#define __SP_STYLE_C__ /** @file * @brief SVG stylesheets implementation. */ /* Authors: * Lauris Kaplinski * Peter Moulder * bulia byak * * Copyright (C) 2001-2002 Lauris Kaplinski * Copyright (C) 2001 Ximian, Inc. * Copyright (C) 2005 Monash University * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include "libcroco/cr-sel-eng.h" #include "xml/croco-node-iface.h" #include "svg/svg.h" #include "svg/svg-color.h" #include "svg/svg-icc-color.h" #include "display/canvas-bpath.h" #include "attributes.h" #include "document.h" #include "extract-uri.h" #include "uri-references.h" #include "uri.h" #include "sp-paint-server.h" #include "streq.h" #include "strneq.h" #include "style.h" #include "svg/css-ostringstream.h" #include "xml/repr.h" #include "xml/simple-document.h" #include "unit-constants.h" #include "2geom/isnan.h" #include "macros.h" #include "preferences.h" #include "sp-filter-reference.h" #include #include using Inkscape::CSSOStringStream; using std::vector; #define BMAX 8192 class SPStyleEnum; /*######################### ## FORWARD DECLARATIONS #########################*/ static void sp_style_clear(SPStyle *style); static void sp_style_merge_property(SPStyle *style, gint id, gchar const *val); static void sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent); static void sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent); static void sp_style_read_dash(SPStyle *style, gchar const *str); static SPTextStyle *sp_text_style_new(void); static void sp_text_style_clear(SPTextStyle *ts); static SPTextStyle *sp_text_style_unref(SPTextStyle *st); static SPTextStyle *sp_text_style_duplicate_unset(SPTextStyle *st); static guint sp_text_style_write(gchar *p, guint len, SPTextStyle const *st, guint flags = SP_STYLE_FLAG_IFSET); static void sp_style_privatize_text(SPStyle *style); static void sp_style_read_ifloat(SPIFloat *val, gchar const *str); static void sp_style_read_iscale24(SPIScale24 *val, gchar const *str); static void sp_style_read_ienum(SPIEnum *val, gchar const *str, SPStyleEnum const *dict, bool can_explicitly_inherit); static void sp_style_read_istring(SPIString *val, gchar const *str); static void sp_style_read_ilength(SPILength *val, gchar const *str); static void sp_style_read_ilengthornormal(SPILengthOrNormal *val, gchar const *str); static void sp_style_read_itextdecoration(SPITextDecoration *val, gchar const *str); static void sp_style_read_icolor(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document); static void sp_style_read_ipaint(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document); static void sp_style_read_ifontsize(SPIFontSize *val, gchar const *str); static void sp_style_read_ifilter(gchar const *str, SPStyle *style, SPDocument *document); static void sp_style_read_penum(SPIEnum *val, Inkscape::XML::Node *repr, gchar const *key, SPStyleEnum const *dict, bool can_explicitly_inherit); static void sp_style_read_plength(SPILength *val, Inkscape::XML::Node *repr, gchar const *key); static void sp_style_read_pfontsize(SPIFontSize *val, Inkscape::XML::Node *repr, gchar const *key); static void sp_style_read_pfloat(SPIFloat *val, Inkscape::XML::Node *repr, gchar const *key); static gint sp_style_write_ifloat(gchar *p, gint len, gchar const *key, SPIFloat const *val, SPIFloat const *base, guint flags); static gint sp_style_write_iscale24(gchar *p, gint len, gchar const *key, SPIScale24 const *val, SPIScale24 const *base, guint flags); static gint sp_style_write_ienum(gchar *p, gint len, gchar const *key, SPStyleEnum const *dict, SPIEnum const *val, SPIEnum const *base, guint flags); static gint sp_style_write_istring(gchar *p, gint len, gchar const *key, SPIString const *val, SPIString const *base, guint flags); static gint sp_style_write_ilength(gchar *p, gint len, gchar const *key, SPILength const *val, SPILength const *base, guint flags); static gint sp_style_write_ipaint(gchar *b, gint len, gchar const *key, SPIPaint const *paint, SPIPaint const *base, guint flags); static gint sp_style_write_ifontsize(gchar *p, gint len, gchar const *key, SPIFontSize const *val, SPIFontSize const *base, guint flags); static gint sp_style_write_ilengthornormal(gchar *p, gint const len, gchar const *const key, SPILengthOrNormal const *const val, SPILengthOrNormal const *const base, guint const flags); static gint sp_style_write_itextdecoration(gchar *p, gint const len, gchar const *const key, SPITextDecoration const *const val, SPITextDecoration const *const base, guint const flags); static gint sp_style_write_ifilter(gchar *b, gint len, gchar const *key, SPIFilter const *filter, SPIFilter const *base, guint flags); static void sp_style_filter_clear(SPStyle *style); #define SPS_READ_IENUM_IF_UNSET(v,s,d,i) if (!(v)->set) {sp_style_read_ienum((v), (s), (d), (i));} #define SPS_READ_PENUM_IF_UNSET(v,r,k,d,i) if (!(v)->set) {sp_style_read_penum((v), (r), (k), (d), (i));} #define SPS_READ_ILENGTH_IF_UNSET(v,s) if (!(v)->set) {sp_style_read_ilength((v), (s));} #define SPS_READ_PLENGTH_IF_UNSET(v,r,k) if (!(v)->set) {sp_style_read_plength((v), (r), (k));} #define SPS_READ_PFLOAT_IF_UNSET(v,r,k) if (!(v)->set) {sp_style_read_pfloat((v), (r), (k));} #define SPS_READ_IFONTSIZE_IF_UNSET(v,s) if (!(v)->set) {sp_style_read_ifontsize((v), (s));} #define SPS_READ_PFONTSIZE_IF_UNSET(v,r,k) if (!(v)->set) {sp_style_read_pfontsize((v), (r), (k));} static void sp_style_merge_from_object_stylesheet(SPStyle *, SPObject const *); struct SPStyleEnum { gchar const *key; gint value; }; static SPStyleEnum const enum_fill_rule[] = { {"nonzero", SP_WIND_RULE_NONZERO}, {"evenodd", SP_WIND_RULE_EVENODD}, {NULL, -1} }; static SPStyleEnum const enum_stroke_linecap[] = { {"butt", SP_STROKE_LINECAP_BUTT}, {"round", SP_STROKE_LINECAP_ROUND}, {"square", SP_STROKE_LINECAP_SQUARE}, {NULL, -1} }; static SPStyleEnum const enum_stroke_linejoin[] = { {"miter", SP_STROKE_LINEJOIN_MITER}, {"round", SP_STROKE_LINEJOIN_ROUND}, {"bevel", SP_STROKE_LINEJOIN_BEVEL}, {NULL, -1} }; static SPStyleEnum const enum_font_style[] = { {"normal", SP_CSS_FONT_STYLE_NORMAL}, {"italic", SP_CSS_FONT_STYLE_ITALIC}, {"oblique", SP_CSS_FONT_STYLE_OBLIQUE}, {NULL, -1} }; static SPStyleEnum const enum_font_size[] = { {"xx-small", SP_CSS_FONT_SIZE_XX_SMALL}, {"x-small", SP_CSS_FONT_SIZE_X_SMALL}, {"small", SP_CSS_FONT_SIZE_SMALL}, {"medium", SP_CSS_FONT_SIZE_MEDIUM}, {"large", SP_CSS_FONT_SIZE_LARGE}, {"x-large", SP_CSS_FONT_SIZE_X_LARGE}, {"xx-large", SP_CSS_FONT_SIZE_XX_LARGE}, {"smaller", SP_CSS_FONT_SIZE_SMALLER}, {"larger", SP_CSS_FONT_SIZE_LARGER}, {NULL, -1} }; static SPStyleEnum const enum_font_variant[] = { {"normal", SP_CSS_FONT_VARIANT_NORMAL}, {"small-caps", SP_CSS_FONT_VARIANT_SMALL_CAPS}, {NULL, -1} }; static SPStyleEnum const enum_font_weight[] = { {"100", SP_CSS_FONT_WEIGHT_100}, {"200", SP_CSS_FONT_WEIGHT_200}, {"300", SP_CSS_FONT_WEIGHT_300}, {"400", SP_CSS_FONT_WEIGHT_400}, {"500", SP_CSS_FONT_WEIGHT_500}, {"600", SP_CSS_FONT_WEIGHT_600}, {"700", SP_CSS_FONT_WEIGHT_700}, {"800", SP_CSS_FONT_WEIGHT_800}, {"900", SP_CSS_FONT_WEIGHT_900}, {"normal", SP_CSS_FONT_WEIGHT_NORMAL}, {"bold", SP_CSS_FONT_WEIGHT_BOLD}, {"lighter", SP_CSS_FONT_WEIGHT_LIGHTER}, {"bolder", SP_CSS_FONT_WEIGHT_BOLDER}, {NULL, -1} }; static SPStyleEnum const enum_font_stretch[] = { {"ultra-condensed", SP_CSS_FONT_STRETCH_ULTRA_CONDENSED}, {"extra-condensed", SP_CSS_FONT_STRETCH_EXTRA_CONDENSED}, {"condensed", SP_CSS_FONT_STRETCH_CONDENSED}, {"semi-condensed", SP_CSS_FONT_STRETCH_SEMI_CONDENSED}, {"normal", SP_CSS_FONT_STRETCH_NORMAL}, {"semi-expanded", SP_CSS_FONT_STRETCH_SEMI_EXPANDED}, {"expanded", SP_CSS_FONT_STRETCH_EXPANDED}, {"extra-expanded", SP_CSS_FONT_STRETCH_EXTRA_EXPANDED}, {"ultra-expanded", SP_CSS_FONT_STRETCH_ULTRA_EXPANDED}, {"narrower", SP_CSS_FONT_STRETCH_NARROWER}, {"wider", SP_CSS_FONT_STRETCH_WIDER}, {NULL, -1} }; static SPStyleEnum const enum_text_align[] = { {"start", SP_CSS_TEXT_ALIGN_START}, {"end", SP_CSS_TEXT_ALIGN_END}, {"left", SP_CSS_TEXT_ALIGN_LEFT}, {"right", SP_CSS_TEXT_ALIGN_RIGHT}, {"center", SP_CSS_TEXT_ALIGN_CENTER}, {"justify", SP_CSS_TEXT_ALIGN_JUSTIFY}, {NULL, -1} }; static SPStyleEnum const enum_text_transform[] = { {"capitalize", SP_CSS_TEXT_TRANSFORM_CAPITALIZE}, {"uppercase", SP_CSS_TEXT_TRANSFORM_UPPERCASE}, {"lowercase", SP_CSS_TEXT_TRANSFORM_LOWERCASE}, {"none", SP_CSS_TEXT_TRANSFORM_NONE}, {NULL, -1} }; static SPStyleEnum const enum_text_anchor[] = { {"start", SP_CSS_TEXT_ANCHOR_START}, {"middle", SP_CSS_TEXT_ANCHOR_MIDDLE}, {"end", SP_CSS_TEXT_ANCHOR_END}, {NULL, -1} }; static SPStyleEnum const enum_direction[] = { {"ltr", SP_CSS_DIRECTION_LTR}, {"rtl", SP_CSS_DIRECTION_RTL}, {NULL, -1} }; static SPStyleEnum const enum_block_progression[] = { {"tb", SP_CSS_BLOCK_PROGRESSION_TB}, {"rl", SP_CSS_BLOCK_PROGRESSION_RL}, {"lr", SP_CSS_BLOCK_PROGRESSION_LR}, {NULL, -1} }; static SPStyleEnum const enum_writing_mode[] = { /* Note that using the same enumerator for lr as lr-tb means we write as lr-tb even if the * input file said lr. We prefer writing lr-tb on the grounds that the spec says the initial * value is lr-tb rather than lr. * * ECMA scripts may be surprised to find tb-rl in DOM if they set the attribute to rl, so * sharing enumerators for different strings may be a bug (once we support ecma script). */ {"lr-tb", SP_CSS_WRITING_MODE_LR_TB}, {"rl-tb", SP_CSS_WRITING_MODE_RL_TB}, {"tb-rl", SP_CSS_WRITING_MODE_TB_RL}, {"lr", SP_CSS_WRITING_MODE_LR_TB}, {"rl", SP_CSS_WRITING_MODE_RL_TB}, {"tb", SP_CSS_WRITING_MODE_TB_RL}, {NULL, -1} }; static SPStyleEnum const enum_visibility[] = { {"hidden", SP_CSS_VISIBILITY_HIDDEN}, {"collapse", SP_CSS_VISIBILITY_COLLAPSE}, {"visible", SP_CSS_VISIBILITY_VISIBLE}, {NULL, -1} }; static SPStyleEnum const enum_overflow[] = { {"visible", SP_CSS_OVERFLOW_VISIBLE}, {"hidden", SP_CSS_OVERFLOW_HIDDEN}, {"scroll", SP_CSS_OVERFLOW_SCROLL}, {"auto", SP_CSS_OVERFLOW_AUTO}, {NULL, -1} }; static SPStyleEnum const enum_display[] = { {"none", SP_CSS_DISPLAY_NONE}, {"inline", SP_CSS_DISPLAY_INLINE}, {"block", SP_CSS_DISPLAY_BLOCK}, {"list-item", SP_CSS_DISPLAY_LIST_ITEM}, {"run-in", SP_CSS_DISPLAY_RUN_IN}, {"compact", SP_CSS_DISPLAY_COMPACT}, {"marker", SP_CSS_DISPLAY_MARKER}, {"table", SP_CSS_DISPLAY_TABLE}, {"inline-table", SP_CSS_DISPLAY_INLINE_TABLE}, {"table-row-group", SP_CSS_DISPLAY_TABLE_ROW_GROUP}, {"table-header-group", SP_CSS_DISPLAY_TABLE_HEADER_GROUP}, {"table-footer-group", SP_CSS_DISPLAY_TABLE_FOOTER_GROUP}, {"table-row", SP_CSS_DISPLAY_TABLE_ROW}, {"table-column-group", SP_CSS_DISPLAY_TABLE_COLUMN_GROUP}, {"table-column", SP_CSS_DISPLAY_TABLE_COLUMN}, {"table-cell", SP_CSS_DISPLAY_TABLE_CELL}, {"table-caption", SP_CSS_DISPLAY_TABLE_CAPTION}, {NULL, -1} }; static SPStyleEnum const enum_shape_rendering[] = { {"auto", 0}, {"optimizeSpeed", 0}, {"crispEdges", 0}, {"geometricPrecision", 0}, {NULL, -1} }; static SPStyleEnum const enum_color_rendering[] = { {"auto", 0}, {"optimizeSpeed", 0}, {"optimizeQuality", 0}, {NULL, -1} }; static SPStyleEnum const *const enum_image_rendering = enum_color_rendering; static SPStyleEnum const enum_text_rendering[] = { {"auto", 0}, {"optimizeSpeed", 0}, {"optimizeLegibility", 0}, {"geometricPrecision", 0}, {NULL, -1} }; static SPStyleEnum const enum_enable_background[] = { {"accumulate", SP_CSS_BACKGROUND_ACCUMULATE}, {"new", SP_CSS_BACKGROUND_NEW}, {NULL, -1} }; /** * Release callback. */ static void sp_style_object_release(SPObject *object, SPStyle *style) { (void)object; // TODO style->object = NULL; } /** * Emit style modified signal on style's object if the filter changed. */ static void sp_style_filter_ref_modified(SPObject *obj, guint flags, SPStyle *style) { (void)flags; // TODO SPFilter *filter=static_cast(obj); if (style->getFilter() == filter) { if (style->object) { style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); } } } /** * Gets called when the filter is (re)attached to the style */ static void sp_style_filter_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style) { if (old_ref) { style->filter_modified_connection.disconnect(); } if ( SP_IS_FILTER(ref)) { style->filter_modified_connection = ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_filter_ref_modified), style)); } sp_style_filter_ref_modified(ref, 0, style); } /** * Emit style modified signal on style's object if server is style's fill * or stroke paint server. */ static void sp_style_paint_server_ref_modified(SPObject *obj, guint flags, SPStyle *style) { (void)flags; // TODO SPPaintServer *server = static_cast(obj); if ((style->fill.isPaintserver()) && style->getFillPaintServer() == server) { if (style->object) { /** \todo * fixme: I do not know, whether it is optimal - we are * forcing reread of everything (Lauris) */ /** \todo * fixme: We have to use object_modified flag, because parent * flag is only available downstreams. */ style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); } } else if ((style->stroke.isPaintserver()) && style->getStrokePaintServer() == server) { if (style->object) { /// \todo fixme: style->object->requestModified(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); } } else if (server) { g_assert_not_reached(); } } /** * Gets called when the paintserver is (re)attached to the style */ static void sp_style_fill_paint_server_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style) { if (old_ref) { style->fill_ps_modified_connection.disconnect(); } if (SP_IS_PAINT_SERVER(ref)) { style->fill_ps_modified_connection = ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_paint_server_ref_modified), style)); } sp_style_paint_server_ref_modified(ref, 0, style); } /** * Gets called when the paintserver is (re)attached to the style */ static void sp_style_stroke_paint_server_ref_changed(SPObject *old_ref, SPObject *ref, SPStyle *style) { if (old_ref) { style->stroke_ps_modified_connection.disconnect(); } if (SP_IS_PAINT_SERVER(ref)) { style->stroke_ps_modified_connection = ref->connectModified(sigc::bind(sigc::ptr_fun(&sp_style_paint_server_ref_modified), style)); } sp_style_paint_server_ref_modified(ref, 0, style); } /** * Returns a new SPStyle object with settings as per sp_style_clear(). */ SPStyle * sp_style_new(SPDocument *document) { SPStyle *const style = g_new0(SPStyle, 1); style->refcount = 1; style->object = NULL; style->document = document; style->text = sp_text_style_new(); style->text_private = TRUE; sp_style_clear(style); style->cloned = false; new (&style->release_connection) sigc::connection(); new (&style->filter_modified_connection) sigc::connection(); new (&style->fill_ps_modified_connection) sigc::connection(); new (&style->stroke_ps_modified_connection) sigc::connection(); return style; } /** * Creates a new SPStyle object, and attaches it to the specified SPObject. */ SPStyle * sp_style_new_from_object(SPObject *object) { g_return_val_if_fail(object != NULL, NULL); g_return_val_if_fail(SP_IS_OBJECT(object), NULL); SPStyle *style = sp_style_new(SP_OBJECT_DOCUMENT(object)); style->object = object; style->release_connection = object->connectRelease(sigc::bind<1>(sigc::ptr_fun(&sp_style_object_release), style)); if (object && SP_OBJECT_IS_CLONED(object)) { style->cloned = true; } return style; } /** * Increase refcount of style. */ SPStyle * sp_style_ref(SPStyle *style) { g_return_val_if_fail(style != NULL, NULL); g_return_val_if_fail(style->refcount > 0, NULL); style->refcount += 1; return style; } /** * Decrease refcount of style with possible destruction. */ SPStyle * sp_style_unref(SPStyle *style) { g_return_val_if_fail(style != NULL, NULL); g_return_val_if_fail(style->refcount > 0, NULL); style->refcount -= 1; if (style->refcount < 1) { style->release_connection.disconnect(); style->release_connection.~connection(); if (style->text) sp_text_style_unref(style->text); if (style->fill.value.href) { style->fill_ps_modified_connection.disconnect(); delete style->fill.value.href; style->fill.value.href = NULL; } if (style->stroke.value.href) { style->stroke_ps_modified_connection.disconnect(); delete style->stroke.value.href; style->stroke.value.href = NULL; } if (style->filter.href) { style->filter_modified_connection.disconnect(); delete style->filter.href; style->filter.href = NULL; } style->filter_modified_connection.~connection(); style->fill_ps_modified_connection.~connection(); style->stroke_ps_modified_connection.~connection(); style->fill.clear(); style->stroke.clear(); sp_style_filter_clear(style); g_free(style->stroke_dash.dash); g_free(style); } return NULL; } /** * Reads the various style parameters for an object from repr. */ static void sp_style_read(SPStyle *style, SPObject *object, Inkscape::XML::Node *repr) { g_assert(style != NULL); g_assert(repr != NULL); g_assert(!object || (SP_OBJECT_REPR(object) == repr)); sp_style_clear(style); if (object && SP_OBJECT_IS_CLONED(object)) { style->cloned = true; } /* 1. Style attribute */ gchar const *val = repr->attribute("style"); if (val != NULL) { sp_style_merge_from_style_string(style, val); } if (object) { sp_style_merge_from_object_stylesheet(style, object); } else { /** \todo No stylesheet information. Find out under what circumstances * this occurs, and handle accordingly. (If we really wanted to, we * could probably get stylesheets by going through repr->doc.) */ } /* 2. Presentation attributes */ /* CSS2 */ SPS_READ_PENUM_IF_UNSET(&style->visibility, repr, "visibility", enum_visibility, true); SPS_READ_PENUM_IF_UNSET(&style->display, repr, "display", enum_display, true); SPS_READ_PENUM_IF_UNSET(&style->overflow, repr, "overflow", enum_overflow, true); /* Font */ SPS_READ_PFONTSIZE_IF_UNSET(&style->font_size, repr, "font-size"); SPS_READ_PENUM_IF_UNSET(&style->font_style, repr, "font-style", enum_font_style, true); SPS_READ_PENUM_IF_UNSET(&style->font_variant, repr, "font-variant", enum_font_variant, true); SPS_READ_PENUM_IF_UNSET(&style->font_weight, repr, "font-weight", enum_font_weight, true); SPS_READ_PENUM_IF_UNSET(&style->font_stretch, repr, "font-stretch", enum_font_stretch, true); /* Text (css2 chapter 16) */ SPS_READ_PLENGTH_IF_UNSET(&style->text_indent, repr, "text-indent"); SPS_READ_PENUM_IF_UNSET(&style->text_align, repr, "text-align", enum_text_align, true); if (!style->text_decoration.set) { val = repr->attribute("text-decoration"); if (val) { sp_style_read_itextdecoration(&style->text_decoration, val); } } if (!style->line_height.set) { val = repr->attribute("line-height"); if (val) { sp_style_read_ilengthornormal(&style->line_height, val); } } if (!style->letter_spacing.set) { val = repr->attribute("letter-spacing"); if (val) { sp_style_read_ilengthornormal(&style->letter_spacing, val); } } if (!style->word_spacing.set) { val = repr->attribute("word-spacing"); if (val) { sp_style_read_ilengthornormal(&style->word_spacing, val); } } SPS_READ_PENUM_IF_UNSET(&style->text_transform, repr, "text-transform", enum_text_transform, true); SPS_READ_PENUM_IF_UNSET(&style->direction, repr, "direction", enum_direction, true); SPS_READ_PENUM_IF_UNSET(&style->block_progression, repr, "block_progression", enum_block_progression, true); /* SVG */ SPS_READ_PENUM_IF_UNSET(&style->writing_mode, repr, "writing-mode", enum_writing_mode, true); SPS_READ_PENUM_IF_UNSET(&style->text_anchor, repr, "text-anchor", enum_text_anchor, true); /* opacity */ if (!style->opacity.set) { val = repr->attribute("opacity"); if (val) { sp_style_read_iscale24(&style->opacity, val); } } /* color */ if (!style->color.set) { val = repr->attribute("color"); if (val) { sp_style_read_icolor(&style->color, val, style, ( object ? SP_OBJECT_DOCUMENT(object) : NULL )); } } /* fill */ if (!style->fill.set) { val = repr->attribute("fill"); if (val) { sp_style_read_ipaint(&style->fill, val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL); } } /* fill-opacity */ if (!style->fill_opacity.set) { val = repr->attribute("fill-opacity"); if (val) { sp_style_read_iscale24(&style->fill_opacity, val); } } /* fill-rule */ SPS_READ_PENUM_IF_UNSET(&style->fill_rule, repr, "fill-rule", enum_fill_rule, true); /* stroke */ if (!style->stroke.set) { val = repr->attribute("stroke"); if (val) { sp_style_read_ipaint(&style->stroke, val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL); } } SPS_READ_PLENGTH_IF_UNSET(&style->stroke_width, repr, "stroke-width"); SPS_READ_PENUM_IF_UNSET(&style->stroke_linecap, repr, "stroke-linecap", enum_stroke_linecap, true); SPS_READ_PENUM_IF_UNSET(&style->stroke_linejoin, repr, "stroke-linejoin", enum_stroke_linejoin, true); SPS_READ_PFLOAT_IF_UNSET(&style->stroke_miterlimit, repr, "stroke-miterlimit"); /* markers */ if (!style->marker[SP_MARKER_LOC].set) { val = repr->attribute("marker"); if (val) { sp_style_read_istring(&style->marker[SP_MARKER_LOC], val); } } if (!style->marker[SP_MARKER_LOC_START].set) { val = repr->attribute("marker-start"); if (val) { sp_style_read_istring(&style->marker[SP_MARKER_LOC_START], val); } } if (!style->marker[SP_MARKER_LOC_MID].set) { val = repr->attribute("marker-mid"); if (val) { sp_style_read_istring(&style->marker[SP_MARKER_LOC_MID], val); } } if (!style->marker[SP_MARKER_LOC_END].set) { val = repr->attribute("marker-end"); if (val) { sp_style_read_istring(&style->marker[SP_MARKER_LOC_END], val); } } /* stroke-opacity */ if (!style->stroke_opacity.set) { val = repr->attribute("stroke-opacity"); if (val) { sp_style_read_iscale24(&style->stroke_opacity, val); } } if (!style->stroke_dasharray_set) { val = repr->attribute("stroke-dasharray"); if (val) { sp_style_read_dash(style, val); } } if (!style->stroke_dashoffset_set) { /* fixme */ val = repr->attribute("stroke-dashoffset"); if (sp_svg_number_read_d(val, &style->stroke_dash.offset)) { style->stroke_dashoffset_set = TRUE; } else { style->stroke_dashoffset_set = FALSE; } } /* -inkscape-font-specification */ if (!style->text_private || !style->text->font_specification.set) { val = repr->attribute("-inkscape-font-specification"); if (val) { if (!style->text_private) sp_style_privatize_text(style); gchar *val_unquoted = attribute_unquote(val); sp_style_read_istring(&style->text->font_specification, val_unquoted); if (val_unquoted) g_free (val_unquoted); } } /* font-family */ if (!style->text_private || !style->text->font_family.set) { val = repr->attribute("font-family"); if (val) { if (!style->text_private) sp_style_privatize_text(style); gchar *val_unquoted = attribute_unquote(val); sp_style_read_istring(&style->text->font_family, val_unquoted); if (val_unquoted) g_free (val_unquoted); } } /* filter effects */ if (!style->filter.set) { val = repr->attribute("filter"); if (val) { sp_style_read_ifilter(val, style, (object) ? SP_OBJECT_DOCUMENT(object) : NULL); } } SPS_READ_PENUM_IF_UNSET(&style->enable_background, repr, "enable-background", enum_enable_background, true); /* 3. Merge from parent */ if (object) { if (object->parent) { sp_style_merge_from_parent(style, SP_OBJECT_STYLE(object->parent)); } } else { if (sp_repr_parent(repr)) { /// \todo fixme: This is not the prettiest thing (Lauris) SPStyle *parent = sp_style_new(NULL); sp_style_read(parent, NULL, sp_repr_parent(repr)); sp_style_merge_from_parent(style, parent); sp_style_unref(parent); } } } /** * Read style properties from object's repr. * * 1. Reset existing object style * 2. Load current effective object style * 3. Load i attributes from immediate parent (which has to be up-to-date) */ void sp_style_read_from_object(SPStyle *style, SPObject *object) { g_return_if_fail(style != NULL); g_return_if_fail(object != NULL); g_return_if_fail(SP_IS_OBJECT(object)); Inkscape::XML::Node *repr = SP_OBJECT_REPR(object); g_return_if_fail(repr != NULL); sp_style_read(style, object, repr); } /** * Read style properties from preferences. * @param style The style to write to * @param path Preferences directory from which the style should be read */ void sp_style_read_from_prefs(SPStyle *style, Glib::ustring const &path) { g_return_if_fail(style != NULL); g_return_if_fail(path != ""); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); // not optimal: we reconstruct the node based on the prefs, then pass it to // sp_style_read for actual processing. Inkscape::XML::SimpleDocument *tempdoc = new Inkscape::XML::SimpleDocument; Inkscape::XML::Node *tempnode = tempdoc->createElement("temp"); std::vector attrs = prefs->getAllEntries(path); for (std::vector::iterator i = attrs.begin(); i != attrs.end(); ++i) { tempnode->setAttribute(i->getEntryName().data(), i->getString().data()); } sp_style_read(style, NULL, tempnode); Inkscape::GC::release(tempnode); Inkscape::GC::release(tempdoc); delete tempdoc; } /** * */ static void sp_style_privatize_text(SPStyle *style) { SPTextStyle *text = style->text; style->text = sp_text_style_duplicate_unset(style->text); sp_text_style_unref(text); style->text_private = TRUE; } /** * Merge property into style. * * Should be called in order of highest to lowest precedence. * E.g. for a single style string, call from the last declaration to the first, * as CSS says that later declarations override earlier ones. * * \pre val != NULL. */ static void sp_style_merge_property(SPStyle *style, gint id, gchar const *val) { g_return_if_fail(val != NULL); switch (id) { case SP_PROP_INKSCAPE_FONT_SPEC: if (!style->text_private) sp_style_privatize_text(style); if (!style->text->font_specification.set) { gchar *val_unquoted = attribute_unquote(val); sp_style_read_istring(&style->text->font_specification, val_unquoted); if (val_unquoted) g_free (val_unquoted); } break; /* CSS2 */ /* Font */ case SP_PROP_FONT_FAMILY: if (!style->text_private) sp_style_privatize_text(style); if (!style->text->font_family.set) { gchar *val_unquoted = attribute_unquote(val); sp_style_read_istring(&style->text->font_family, val_unquoted); if (val_unquoted) g_free (val_unquoted); } break; case SP_PROP_FONT_SIZE: SPS_READ_IFONTSIZE_IF_UNSET(&style->font_size, val); break; case SP_PROP_FONT_SIZE_ADJUST: if (strcmp(val, "none") != 0) { g_warning("Unimplemented style property id SP_PROP_FONT_SIZE_ADJUST: value: %s", val); } break; case SP_PROP_FONT_STYLE: SPS_READ_IENUM_IF_UNSET(&style->font_style, val, enum_font_style, true); break; case SP_PROP_FONT_VARIANT: SPS_READ_IENUM_IF_UNSET(&style->font_variant, val, enum_font_variant, true); break; case SP_PROP_FONT_WEIGHT: SPS_READ_IENUM_IF_UNSET(&style->font_weight, val, enum_font_weight, true); break; case SP_PROP_FONT_STRETCH: SPS_READ_IENUM_IF_UNSET(&style->font_stretch, val, enum_font_stretch, true); break; case SP_PROP_FONT: if (!style->text_private) sp_style_privatize_text(style); if (!style->text->font.set) { g_free(style->text->font.value); style->text->font.value = g_strdup(val); style->text->font.set = TRUE; style->text->font.inherit = (val && !strcmp(val, "inherit")); } break; /* Text */ case SP_PROP_TEXT_INDENT: SPS_READ_ILENGTH_IF_UNSET(&style->text_indent, val); break; case SP_PROP_TEXT_ALIGN: SPS_READ_IENUM_IF_UNSET(&style->text_align, val, enum_text_align, true); break; case SP_PROP_TEXT_DECORATION: if (!style->text_decoration.set) { sp_style_read_itextdecoration(&style->text_decoration, val); } break; case SP_PROP_LINE_HEIGHT: if (!style->line_height.set) { sp_style_read_ilengthornormal(&style->line_height, val); } break; case SP_PROP_LETTER_SPACING: if (!style->letter_spacing.set) { sp_style_read_ilengthornormal(&style->letter_spacing, val); } break; case SP_PROP_WORD_SPACING: if (!style->word_spacing.set) { sp_style_read_ilengthornormal(&style->word_spacing, val); } break; case SP_PROP_TEXT_TRANSFORM: SPS_READ_IENUM_IF_UNSET(&style->text_transform, val, enum_text_transform, true); break; /* Text (css3) */ case SP_PROP_DIRECTION: SPS_READ_IENUM_IF_UNSET(&style->direction, val, enum_direction, true); break; case SP_PROP_BLOCK_PROGRESSION: SPS_READ_IENUM_IF_UNSET(&style->block_progression, val, enum_block_progression, true); break; case SP_PROP_WRITING_MODE: SPS_READ_IENUM_IF_UNSET(&style->writing_mode, val, enum_writing_mode, true); break; case SP_PROP_TEXT_ANCHOR: SPS_READ_IENUM_IF_UNSET(&style->text_anchor, val, enum_text_anchor, true); break; /* Text (unimplemented) */ case SP_PROP_TEXT_RENDERING: { /* Ignore the hint. */ SPIEnum dummy; SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_text_rendering, true); break; } case SP_PROP_ALIGNMENT_BASELINE: g_warning("Unimplemented style property SP_PROP_ALIGNMENT_BASELINE: value: %s", val); break; case SP_PROP_BASELINE_SHIFT: g_warning("Unimplemented style property SP_PROP_BASELINE_SHIFT: value: %s", val); break; case SP_PROP_DOMINANT_BASELINE: g_warning("Unimplemented style property SP_PROP_DOMINANT_BASELINE: value: %s", val); break; case SP_PROP_GLYPH_ORIENTATION_HORIZONTAL: g_warning("Unimplemented style property SP_PROP_ORIENTATION_HORIZONTAL: value: %s", val); break; case SP_PROP_GLYPH_ORIENTATION_VERTICAL: g_warning("Unimplemented style property SP_PROP_ORIENTATION_VERTICAL: value: %s", val); break; case SP_PROP_KERNING: g_warning("Unimplemented style property SP_PROP_KERNING: value: %s", val); break; /* Misc */ case SP_PROP_CLIP: g_warning("Unimplemented style property SP_PROP_CLIP: value: %s", val); break; case SP_PROP_COLOR: if (!style->color.set) { sp_style_read_icolor(&style->color, val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL); } break; case SP_PROP_CURSOR: g_warning("Unimplemented style property SP_PROP_CURSOR: value: %s", val); break; case SP_PROP_DISPLAY: SPS_READ_IENUM_IF_UNSET(&style->display, val, enum_display, true); break; case SP_PROP_OVERFLOW: /** \todo * FIXME: not supported properly yet, we just read and write it, * but act as if it is always "display". */ SPS_READ_IENUM_IF_UNSET(&style->overflow, val, enum_overflow, true); break; case SP_PROP_VISIBILITY: SPS_READ_IENUM_IF_UNSET(&style->visibility, val, enum_visibility, true); break; /* SVG */ /* Clip/Mask */ case SP_PROP_CLIP_PATH: g_warning("Unimplemented style property SP_PROP_CLIP_PATH: value: %s", val); break; case SP_PROP_CLIP_RULE: g_warning("Unimplemented style property SP_PROP_CLIP_RULE: value: %s", val); break; case SP_PROP_MASK: g_warning("Unimplemented style property SP_PROP_MASK: value: %s", val); break; case SP_PROP_OPACITY: if (!style->opacity.set) { sp_style_read_iscale24(&style->opacity, val); } break; case SP_PROP_ENABLE_BACKGROUND: SPS_READ_IENUM_IF_UNSET(&style->enable_background, val, enum_enable_background, true); break; /* Filter */ case SP_PROP_FILTER: if (!style->filter.set && !style->filter.inherit) { sp_style_read_ifilter(val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL); } break; case SP_PROP_FLOOD_COLOR: g_warning("Unimplemented style property SP_PROP_FLOOD_COLOR: value: %s", val); break; case SP_PROP_FLOOD_OPACITY: g_warning("Unimplemented style property SP_PROP_FLOOD_OPACITY: value: %s", val); break; case SP_PROP_LIGHTING_COLOR: g_warning("Unimplemented style property SP_PROP_LIGHTING_COLOR: value: %s", val); break; /* Gradient */ case SP_PROP_STOP_COLOR: g_warning("Unimplemented style property SP_PROP_STOP_COLOR: value: %s", val); break; case SP_PROP_STOP_OPACITY: g_warning("Unimplemented style property SP_PROP_STOP_OPACITY: value: %s", val); break; /* Interactivity */ case SP_PROP_POINTER_EVENTS: g_warning("Unimplemented style property SP_PROP_POINTER_EVENTS: value: %s", val); break; /* Paint */ case SP_PROP_COLOR_INTERPOLATION: g_warning("Unimplemented style property SP_PROP_COLOR_INTERPOLATION: value: %s", val); break; case SP_PROP_COLOR_INTERPOLATION_FILTERS: g_warning("Unimplemented style property SP_PROP_INTERPOLATION_FILTERS: value: %s", val); break; case SP_PROP_COLOR_PROFILE: g_warning("Unimplemented style property SP_PROP_COLOR_PROFILE: value: %s", val); break; case SP_PROP_COLOR_RENDERING: { /* Ignore the hint. */ SPIEnum dummy; SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_color_rendering, true); break; } case SP_PROP_FILL: if (!style->fill.set) { sp_style_read_ipaint(&style->fill, val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL); } break; case SP_PROP_FILL_OPACITY: if (!style->fill_opacity.set) { sp_style_read_iscale24(&style->fill_opacity, val); } break; case SP_PROP_FILL_RULE: if (!style->fill_rule.set) { sp_style_read_ienum(&style->fill_rule, val, enum_fill_rule, true); } break; case SP_PROP_IMAGE_RENDERING: { /* Ignore the hint. */ SPIEnum dummy; SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_image_rendering, true); break; } case SP_PROP_MARKER: /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */ /* style->marker[SP_MARKER_LOC] = g_quark_from_string(val); */ if (!style->marker[SP_MARKER_LOC].set) { g_free(style->marker[SP_MARKER_LOC].value); style->marker[SP_MARKER_LOC].value = g_strdup(val); style->marker[SP_MARKER_LOC].set = TRUE; style->marker[SP_MARKER_LOC].inherit = (val && !strcmp(val, "inherit")); } break; case SP_PROP_MARKER_START: /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */ if (!style->marker[SP_MARKER_LOC_START].set) { g_free(style->marker[SP_MARKER_LOC_START].value); style->marker[SP_MARKER_LOC_START].value = g_strdup(val); style->marker[SP_MARKER_LOC_START].set = TRUE; style->marker[SP_MARKER_LOC_START].inherit = (val && !strcmp(val, "inherit")); } break; case SP_PROP_MARKER_MID: /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */ if (!style->marker[SP_MARKER_LOC_MID].set) { g_free(style->marker[SP_MARKER_LOC_MID].value); style->marker[SP_MARKER_LOC_MID].value = g_strdup(val); style->marker[SP_MARKER_LOC_MID].set = TRUE; style->marker[SP_MARKER_LOC_MID].inherit = (val && !strcmp(val, "inherit")); } break; case SP_PROP_MARKER_END: /* TODO: Call sp_uri_reference_resolve(SPDocument *document, guchar const *uri) */ if (!style->marker[SP_MARKER_LOC_END].set) { g_free(style->marker[SP_MARKER_LOC_END].value); style->marker[SP_MARKER_LOC_END].value = g_strdup(val); style->marker[SP_MARKER_LOC_END].set = TRUE; style->marker[SP_MARKER_LOC_END].inherit = (val && !strcmp(val, "inherit")); } break; case SP_PROP_SHAPE_RENDERING: { /* Ignore the hint. */ SPIEnum dummy; SPS_READ_IENUM_IF_UNSET(&dummy, val, enum_shape_rendering, true); break; } case SP_PROP_STROKE: if (!style->stroke.set) { sp_style_read_ipaint(&style->stroke, val, style, (style->object) ? SP_OBJECT_DOCUMENT(style->object) : NULL); } break; case SP_PROP_STROKE_WIDTH: SPS_READ_ILENGTH_IF_UNSET(&style->stroke_width, val); break; case SP_PROP_STROKE_DASHARRAY: if (!style->stroke_dasharray_set) { sp_style_read_dash(style, val); } break; case SP_PROP_STROKE_DASHOFFSET: if (!style->stroke_dashoffset_set) { /* fixme */ if (sp_svg_number_read_d(val, &style->stroke_dash.offset)) { style->stroke_dashoffset_set = TRUE; } else { style->stroke_dashoffset_set = FALSE; } } break; case SP_PROP_STROKE_LINECAP: if (!style->stroke_linecap.set) { sp_style_read_ienum(&style->stroke_linecap, val, enum_stroke_linecap, true); } break; case SP_PROP_STROKE_LINEJOIN: if (!style->stroke_linejoin.set) { sp_style_read_ienum(&style->stroke_linejoin, val, enum_stroke_linejoin, true); } break; case SP_PROP_STROKE_MITERLIMIT: if (!style->stroke_miterlimit.set) { sp_style_read_ifloat(&style->stroke_miterlimit, val); } break; case SP_PROP_STROKE_OPACITY: if (!style->stroke_opacity.set) { sp_style_read_iscale24(&style->stroke_opacity, val); } break; default: g_warning("Invalid style property id: %d value: %s", id, val); break; } } static void sp_style_merge_style_from_decl(SPStyle *const style, CRDeclaration const *const decl) { /** \todo Ensure that property is lcased, as per * http://www.w3.org/TR/REC-CSS2/syndata.html#q4. * Should probably be done in libcroco. */ unsigned const prop_idx = sp_attribute_lookup(decl->property->stryng->str); if (prop_idx != SP_ATTR_INVALID) { /** \todo * effic: Test whether the property is already set before trying to * convert to string. Alternatively, set from CRTerm directly rather * than converting to string. */ guchar *const str_value_unsigned = cr_term_to_string(decl->value); gchar *const str_value = reinterpret_cast(str_value_unsigned); sp_style_merge_property(style, prop_idx, str_value); g_free(str_value); } } static void sp_style_merge_from_props(SPStyle *const style, CRPropList *const props) { #if 0 /* forwards */ for (CRPropList const *cur = props; cur; cur = cr_prop_list_get_next(cur)) { CRDeclaration *decl = NULL; cr_prop_list_get_decl(cur, &decl); sp_style_merge_style_from_decl(style, decl); } #else /* in reverse order, as we need later declarations to take precedence over earlier ones. */ if (props) { sp_style_merge_from_props(style, cr_prop_list_get_next(props)); CRDeclaration *decl = NULL; cr_prop_list_get_decl(props, &decl); sp_style_merge_style_from_decl(style, decl); } #endif } /** * \pre decl_list != NULL */ static void sp_style_merge_from_decl_list(SPStyle *const style, CRDeclaration const *const decl_list) { // read the decls from end to start, using head recursion, so that latter declarations override // (Ref: http://www.w3.org/TR/REC-CSS2/cascade.html#cascading-order point 4.) // because sp_style_merge_style_from_decl only sets properties that are unset if (decl_list->next) { sp_style_merge_from_decl_list(style, decl_list->next); } sp_style_merge_style_from_decl(style, decl_list); } static CRSelEng * sp_repr_sel_eng() { CRSelEng *const ret = cr_sel_eng_new(); cr_sel_eng_set_node_iface(ret, &Inkscape::XML::croco_node_iface); /** \todo * Check whether we need to register any pseudo-class handlers. * libcroco has its own default handlers for first-child and lang. * * We probably want handlers for link and arguably visited (though * inkscape can't visit links at the time of writing). hover etc. * more useful in inkview than the editor inkscape. * * http://www.w3.org/TR/SVG11/styling.html#StylingWithCSS says that * the following should be honoured, at least by inkview: * :hover, :active, :focus, :visited, :link. */ g_assert(ret); return ret; } static void sp_style_merge_from_object_stylesheet(SPStyle *const style, SPObject const *const object) { static CRSelEng *sel_eng = NULL; if (!sel_eng) { sel_eng = sp_repr_sel_eng(); } CRPropList *props = NULL; CRStatus status = cr_sel_eng_get_matched_properties_from_cascade(sel_eng, object->document->style_cascade, object->repr, &props); g_return_if_fail(status == CR_OK); /// \todo Check what errors can occur, and handle them properly. if (props) { sp_style_merge_from_props(style, props); cr_prop_list_destroy(props); } } /** * Parses a style="..." string and merges it with an existing SPStyle. */ void sp_style_merge_from_style_string(SPStyle *const style, gchar const *const p) { /* * Reference: http://www.w3.org/TR/SVG11/styling.html#StyleAttribute: * ``When CSS styling is used, CSS inline style is specified by including * semicolon-separated property declarations of the form "name : value" * within the style attribute''. * * That's fairly ambiguous. Is a `value' allowed to contain semicolons? * Why does it say "including", what else is allowed in the style * attribute value? */ CRDeclaration *const decl_list = cr_declaration_parse_list_from_buf(reinterpret_cast(p), CR_UTF_8); if (decl_list) { sp_style_merge_from_decl_list(style, decl_list); cr_declaration_destroy(decl_list); } } /** Indexed by SP_CSS_FONT_SIZE_blah. */ static float const font_size_table[] = {6.0, 8.0, 10.0, 12.0, 14.0, 18.0, 24.0}; static void sp_style_merge_font_size_from_parent(SPIFontSize &child, SPIFontSize const &parent) { /* 'font-size' */ if (!child.set || child.inherit) { /* Inherit the computed value. Reference: http://www.w3.org/TR/SVG11/styling.html#Inheritance */ child.computed = parent.computed; } else if (child.type == SP_FONT_SIZE_LITERAL) { /** \todo * fixme: SVG and CSS do not specify clearly, whether we should use * user or screen coordinates (Lauris) */ if (child.value < SP_CSS_FONT_SIZE_SMALLER) { child.computed = font_size_table[child.value]; } else if (child.value == SP_CSS_FONT_SIZE_SMALLER) { child.computed = parent.computed / 1.2; } else if (child.value == SP_CSS_FONT_SIZE_LARGER) { child.computed = parent.computed * 1.2; } else { /* Illegal value */ } } else if (child.type == SP_FONT_SIZE_PERCENTAGE) { /* Unlike most other lengths, percentage for font size is relative to parent computed value * rather than viewport. */ child.computed = parent.computed * SP_F8_16_TO_FLOAT(child.value); } } /** * Sets computed values in \a style, which may involve inheriting from (or in some other way * calculating from) corresponding computed values of \a parent. * * References: http://www.w3.org/TR/SVG11/propidx.html shows what properties inherit by default. * http://www.w3.org/TR/SVG11/styling.html#Inheritance gives general rules as to what it means to * inherit a value. http://www.w3.org/TR/REC-CSS2/cascade.html#computed-value is more precise * about what the computed value is (not obvious for lengths). * * \pre \a parent's computed values are already up-to-date. */ void sp_style_merge_from_parent(SPStyle *const style, SPStyle const *const parent) { g_return_if_fail(style != NULL); /** \todo * fixme: Check for existing callers that might pass null parent. * This should probably be g_return_if_fail, or else we should make a * best attempt to set computed values correctly without having a parent * (i.e., by assuming parent has initial values). */ if (!parent) return; /* CSS2 */ /* Font */ sp_style_merge_font_size_from_parent(style->font_size, parent->font_size); /* 'font-style' */ if (!style->font_style.set || style->font_style.inherit) { style->font_style.computed = parent->font_style.computed; } /* 'font-variant' */ if (!style->font_variant.set || style->font_variant.inherit) { style->font_variant.computed = parent->font_variant.computed; } /* 'font-weight' */ if (!style->font_weight.set || style->font_weight.inherit) { style->font_weight.computed = parent->font_weight.computed; } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_NORMAL) { /** \todo * fixme: This is unconditional, i.e., happens even if parent not * present. */ style->font_weight.computed = SP_CSS_FONT_WEIGHT_400; } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLD) { style->font_weight.computed = SP_CSS_FONT_WEIGHT_700; } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_LIGHTER) { unsigned const parent_val = parent->font_weight.computed; g_assert(SP_CSS_FONT_WEIGHT_100 == 0); // strictly, 'bolder' and 'lighter' should go to the next weight // expressible in the current font family, but that's difficult to // find out, so jumping by 3 seems an appropriate approximation style->font_weight.computed = (parent_val <= SP_CSS_FONT_WEIGHT_100 + 3 ? (unsigned)SP_CSS_FONT_WEIGHT_100 : parent_val - 3); g_assert(style->font_weight.computed <= (unsigned) SP_CSS_FONT_WEIGHT_900); } else if (style->font_weight.value == SP_CSS_FONT_WEIGHT_BOLDER) { unsigned const parent_val = parent->font_weight.computed; g_assert(parent_val <= SP_CSS_FONT_WEIGHT_900); style->font_weight.computed = (parent_val >= SP_CSS_FONT_WEIGHT_900 - 3 ? (unsigned)SP_CSS_FONT_WEIGHT_900 : parent_val + 3); g_assert(style->font_weight.computed <= (unsigned) SP_CSS_FONT_WEIGHT_900); } /* 'font-stretch' */ if (!style->font_stretch.set || style->font_stretch.inherit) { style->font_stretch.computed = parent->font_stretch.computed; } else if (style->font_stretch.value == SP_CSS_FONT_STRETCH_NARROWER) { unsigned const parent_val = parent->font_stretch.computed; style->font_stretch.computed = (parent_val == SP_CSS_FONT_STRETCH_ULTRA_CONDENSED ? parent_val : parent_val - 1); g_assert(style->font_stretch.computed <= (unsigned) SP_CSS_FONT_STRETCH_ULTRA_EXPANDED); } else if (style->font_stretch.value == SP_CSS_FONT_STRETCH_WIDER) { unsigned const parent_val = parent->font_stretch.computed; g_assert(parent_val <= SP_CSS_FONT_STRETCH_ULTRA_EXPANDED); style->font_stretch.computed = (parent_val == SP_CSS_FONT_STRETCH_ULTRA_EXPANDED ? parent_val : parent_val + 1); g_assert(style->font_stretch.computed <= (unsigned) SP_CSS_FONT_STRETCH_ULTRA_EXPANDED); } /* text (css2) */ if (!style->text_indent.set || style->text_indent.inherit) { style->text_indent.computed = parent->text_indent.computed; } if (!style->text_align.set || style->text_align.inherit) { style->text_align.computed = parent->text_align.computed; } if (!style->text_decoration.set || style->text_decoration.inherit) { style->text_decoration.underline = parent->text_decoration.underline; style->text_decoration.overline = parent->text_decoration.overline; style->text_decoration.line_through = parent->text_decoration.line_through; style->text_decoration.blink = parent->text_decoration.blink; } if (!style->line_height.set || style->line_height.inherit) { style->line_height.computed = parent->line_height.computed; style->line_height.normal = parent->line_height.normal; } if (!style->letter_spacing.set || style->letter_spacing.inherit) { style->letter_spacing.computed = parent->letter_spacing.computed; style->letter_spacing.normal = parent->letter_spacing.normal; } if (!style->word_spacing.set || style->word_spacing.inherit) { style->word_spacing.computed = parent->word_spacing.computed; style->word_spacing.normal = parent->word_spacing.normal; } if (!style->text_transform.set || style->text_transform.inherit) { style->text_transform.computed = parent->text_transform.computed; } if (!style->direction.set || style->direction.inherit) { style->direction.computed = parent->direction.computed; } if (!style->block_progression.set || style->block_progression.inherit) { style->block_progression.computed = parent->block_progression.computed; } if (!style->writing_mode.set || style->writing_mode.inherit) { style->writing_mode.computed = parent->writing_mode.computed; } if (!style->text_anchor.set || style->text_anchor.inherit) { style->text_anchor.computed = parent->text_anchor.computed; } if (style->opacity.inherit) { style->opacity.value = parent->opacity.value; } /* Color */ if (!style->color.set || style->color.inherit) { sp_style_merge_ipaint(style, &style->color, &parent->color); } /* Fill */ if (!style->fill.set || style->fill.inherit || style->fill.currentcolor) { sp_style_merge_ipaint(style, &style->fill, &parent->fill); } if (!style->fill_opacity.set || style->fill_opacity.inherit) { style->fill_opacity.value = parent->fill_opacity.value; } if (!style->fill_rule.set || style->fill_rule.inherit) { style->fill_rule.computed = parent->fill_rule.computed; } /* Stroke */ if (!style->stroke.set || style->stroke.inherit || style->stroke.currentcolor) { sp_style_merge_ipaint(style, &style->stroke, &parent->stroke); } if (!style->stroke_width.set || style->stroke_width.inherit) { style->stroke_width.computed = parent->stroke_width.computed; } else { /* Update computed value for any change in font inherited from parent. */ double const em = style->font_size.computed; if (style->stroke_width.unit == SP_CSS_UNIT_EM) { style->stroke_width.computed = style->stroke_width.value * em; } else if (style->stroke_width.unit == SP_CSS_UNIT_EX) { double const ex = em * 0.5; // fixme: Get x height from libnrtype or pango. style->stroke_width.computed = style->stroke_width.value * ex; } } if (!style->stroke_linecap.set || style->stroke_linecap.inherit) { style->stroke_linecap.computed = parent->stroke_linecap.computed; } if (!style->stroke_linejoin.set || style->stroke_linejoin.inherit) { style->stroke_linejoin.computed = parent->stroke_linejoin.computed; } if (!style->stroke_miterlimit.set || style->stroke_miterlimit.inherit) { style->stroke_miterlimit.value = parent->stroke_miterlimit.value; } if (!style->stroke_dasharray_set && parent->stroke_dasharray_set) { /** \todo * This code looks wrong. Why does the logic differ from the * above properties? Similarly dashoffset below. */ style->stroke_dash.n_dash = parent->stroke_dash.n_dash; if (style->stroke_dash.n_dash > 0) { style->stroke_dash.dash = g_new(gdouble, style->stroke_dash.n_dash); memcpy(style->stroke_dash.dash, parent->stroke_dash.dash, style->stroke_dash.n_dash * sizeof(gdouble)); } } if (!style->stroke_dashoffset_set && parent->stroke_dashoffset_set) { style->stroke_dash.offset = parent->stroke_dash.offset; } if (!style->stroke_opacity.set || style->stroke_opacity.inherit) { style->stroke_opacity.value = parent->stroke_opacity.value; } if (style->text && parent->text) { if (!style->text->font_family.set || style->text->font_family.inherit) { g_free(style->text->font_family.value); style->text->font_family.value = g_strdup(parent->text->font_family.value); } } if (style->text && parent->text) { if (!style->text->font_specification.set || style->text->font_specification.inherit) { g_free(style->text->font_specification.value); style->text->font_specification.value = g_strdup(parent->text->font_specification.value); } } /* Markers - Free the old value and make copy of the new */ for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) { if (!style->marker[i].set || style->marker[i].inherit) { g_free(style->marker[i].value); style->marker[i].value = g_strdup(parent->marker[i].value); } } /* Filter effects */ if (style->filter.inherit) { sp_style_merge_ifilter(style, &parent->filter); } if(style->enable_background.inherit) { style->enable_background.value = parent->enable_background.value; } } template static void sp_style_merge_prop_from_dying_parent(T &child, T const &parent) { if ( ( !(child.set) || child.inherit ) && parent.set && !(parent.inherit) ) { child = parent; } } /** * Copy SPIString from parent to child. */ static void sp_style_merge_string_prop_from_dying_parent(SPIString &child, SPIString const &parent) { if ( ( !(child.set) || child.inherit ) && parent.set && !(parent.inherit) ) { g_free(child.value); child.value = g_strdup(parent.value); child.set = parent.set; child.inherit = parent.inherit; } } static void sp_style_merge_paint_prop_from_dying_parent(SPStyle *style, SPIPaint &child, SPIPaint const &parent) { /** \todo * I haven't given this much attention. See comments below about * currentColor, colorProfile, and relative URIs. */ if (!child.set || child.inherit) { sp_style_merge_ipaint(style, &child, &parent); child.set = parent.set; child.inherit = parent.inherit; } } static void sp_style_merge_rel_enum_prop_from_dying_parent(SPIEnum &child, SPIEnum const &parent, unsigned const max_computed_val, unsigned const smaller_val) { /* We assume that min computed val is 0, contiguous up to max_computed_val, then zero or more other absolute values, then smaller_val then larger_val. */ unsigned const min_computed_val = 0; unsigned const larger_val = smaller_val + 1; g_return_if_fail(min_computed_val < max_computed_val); g_return_if_fail(max_computed_val < smaller_val); if (parent.set && !parent.inherit) { if (!child.set || child.inherit) { child.value = parent.value; child.set = parent.set; // i.e. true child.inherit = parent.inherit; // i.e. false } else if (child.value < smaller_val) { /* Child has absolute value: leave as is. */ } else if ( ( child.value == smaller_val && parent.value == larger_val ) || ( parent.value == smaller_val && child.value == larger_val ) ) { child.set = false; /* * Note that this can result in a change in computed value in the * rare case that the parent's setting was a no-op (i.e. if the * parent's parent's computed value was already ultra-condensed or * ultra-expanded). However, I'd guess that the change is for the * better: I'd guess that if the properties were specified * relatively, then the intent is to counteract parent's effect. * I.e. I believe this is the best code even in that case. */ } else if (child.value == parent.value) { /* Leave as is. */ /** \todo * It's unclear what to do if style and parent specify the same * relative directive (narrower or wider). We can either convert * to absolute specification or coalesce to a single relative * request (of half the strength of the original pair). * * Converting to a single level of relative specification is a * better choice if the newly-unlinked clone is itself cloned to * other contexts (inheriting different font stretchiness): it * would preserve the effect that it will be narrower than * the inherited context in each case. The disadvantage is that * it will ~certainly affect the computed value of the * newly-unlinked clone. */ } else { unsigned const parent_val = parent.computed; child.value = ( child.value == smaller_val ? ( parent_val == min_computed_val ? parent_val : parent_val - 1 ) : ( parent_val == max_computed_val ? parent_val : parent_val + 1 ) ); g_assert(child.value <= max_computed_val); child.inherit = false; g_assert(child.set); } } } template static void sp_style_merge_length_prop_from_dying_parent(LengthT &child, LengthT const &parent, double const parent_child_em_ratio) { if ( ( !(child.set) || child.inherit ) && parent.set && !(parent.inherit) ) { child = parent; switch (parent.unit) { case SP_CSS_UNIT_EM: case SP_CSS_UNIT_EX: child.value *= parent_child_em_ratio; /** \todo * fixme: Have separate ex ratio parameter. * Get x height from libnrtype or pango. */ if (!IS_FINITE(child.value)) { child.value = child.computed; child.unit = SP_CSS_UNIT_NONE; } break; default: break; } } } static double get_relative_font_size_frac(SPIFontSize const &font_size) { switch (font_size.type) { case SP_FONT_SIZE_LITERAL: { switch (font_size.value) { case SP_CSS_FONT_SIZE_SMALLER: return 5.0 / 6.0; case SP_CSS_FONT_SIZE_LARGER: return 6.0 / 5.0; default: g_assert_not_reached(); } } case SP_FONT_SIZE_PERCENTAGE: return SP_F8_16_TO_FLOAT(font_size.value); case SP_FONT_SIZE_LENGTH: g_assert_not_reached(); } g_assert_not_reached(); } /** * Combine \a style and \a parent style specifications into a single style specification that * preserves (as much as possible) the effect of the existing \a style being a child of \a parent. * * Called when the parent repr is to be removed (e.g. the parent is a \ element that is being * unlinked), in which case we copy/adapt property values that are explicitly set in \a parent, * trying to retain the same visual appearance once the parent is removed. Interesting cases are * when there is unusual interaction with the parent's value (opacity, display) or when the value * can be specified as relative to the parent computed value (font-size, font-weight etc.). * * Doesn't update computed values of \a style. For correctness, you should subsequently call * sp_style_merge_from_parent against the new parent (presumably \a parent's parent) even if \a * style was previously up-to-date wrt \a parent. * * \pre \a parent's computed values are already up-to-date. * (\a style's computed values needn't be up-to-date.) */ void sp_style_merge_from_dying_parent(SPStyle *const style, SPStyle const *const parent) { /** \note * The general rule for each property is as follows: * * If style is set to an absolute value, then leave it as is. * * Otherwise (i.e. if style has a relative value): * * If parent is set to an absolute value, then set style to the computed value. * * Otherwise, calculate the combined relative value (e.g. multiplying the two percentages). */ /* We do font-size first, to ensure that em size is up-to-date. */ /** \todo * fixme: We'll need to have more font-related things up the top once * we're getting x-height from pango or libnrtype. */ /* Some things that allow relative specifications. */ { /* font-size. Note that we update the computed font-size of style, to assist in em calculations later in this function. */ if (parent->font_size.set && !parent->font_size.inherit) { if (!style->font_size.set || style->font_size.inherit) { /* font_size inherits the computed value, so we can use the parent value * verbatim. */ style->font_size = parent->font_size; } else if ( style->font_size.type == SP_FONT_SIZE_LENGTH ) { /* Child already has absolute size (stored in computed value), so do nothing. */ } else if ( style->font_size.type == SP_FONT_SIZE_LITERAL && style->font_size.value < SP_CSS_FONT_SIZE_SMALLER ) { /* Child already has absolute size, but we ensure that the computed value is up-to-date. */ unsigned const ix = style->font_size.value; g_assert(ix < G_N_ELEMENTS(font_size_table)); style->font_size.computed = font_size_table[ix]; } else { /* Child has relative size. */ double const child_frac(get_relative_font_size_frac(style->font_size)); style->font_size.set = true; style->font_size.inherit = false; style->font_size.computed = parent->font_size.computed * child_frac; if ( ( parent->font_size.type == SP_FONT_SIZE_LITERAL && parent->font_size.value < SP_CSS_FONT_SIZE_SMALLER ) || parent->font_size.type == SP_FONT_SIZE_LENGTH ) { /* Absolute value. */ style->font_size.type = SP_FONT_SIZE_LENGTH; /* .value is unused for SP_FONT_SIZE_LENGTH. */ } else { /* Relative value. */ double const parent_frac(get_relative_font_size_frac(parent->font_size)); style->font_size.type = SP_FONT_SIZE_PERCENTAGE; style->font_size.value = SP_F8_16_FROM_FLOAT(parent_frac * child_frac); } } } /* 'font-stretch' */ sp_style_merge_rel_enum_prop_from_dying_parent(style->font_stretch, parent->font_stretch, SP_CSS_FONT_STRETCH_ULTRA_EXPANDED, SP_CSS_FONT_STRETCH_NARROWER); /* font-weight */ sp_style_merge_rel_enum_prop_from_dying_parent(style->font_weight, parent->font_weight, SP_CSS_FONT_WEIGHT_900, SP_CSS_FONT_WEIGHT_LIGHTER); } /* Enum values that don't have any relative settings (other than `inherit'). */ { SPIEnum SPStyle::*const fields[] = { //nyi: SPStyle::clip_rule, //nyi: SPStyle::color_interpolation, //nyi: SPStyle::color_interpolation_filters, //nyi: SPStyle::color_rendering, &SPStyle::direction, &SPStyle::fill_rule, &SPStyle::font_style, &SPStyle::font_variant, //nyi: SPStyle::image_rendering, //nyi: SPStyle::pointer_events, //nyi: SPStyle::shape_rendering, &SPStyle::stroke_linecap, &SPStyle::stroke_linejoin, &SPStyle::text_anchor, //nyi: &SPStyle::text_rendering, &SPStyle::visibility, &SPStyle::writing_mode }; for (unsigned i = 0; i < G_N_ELEMENTS(fields); ++i) { SPIEnum SPStyle::*const fld = fields[i]; sp_style_merge_prop_from_dying_parent(style->*fld, parent->*fld); } } /* A few other simple inheritance properties. */ { sp_style_merge_prop_from_dying_parent(style->fill_opacity, parent->fill_opacity); sp_style_merge_prop_from_dying_parent(style->stroke_opacity, parent->stroke_opacity); sp_style_merge_prop_from_dying_parent(style->stroke_miterlimit, parent->stroke_miterlimit); /** \todo * We currently treat text-decoration as if it were a simple inherited * property (fixme). This code may need changing once we do the * special fill/stroke inheritance mentioned by the spec. */ sp_style_merge_prop_from_dying_parent(style->text_decoration, parent->text_decoration); //nyi: font-size-adjust, // | none | inherit //nyi: glyph-orientation-horizontal, //nyi: glyph-orientation-vertical, } /* Properties that involve length but are easy in other respects. */ { /* The difficulty with lengths is that font-relative units need adjusting if the font * varies between parent & child. * * Lengths specified in the existing child can stay as they are: its computed font * specification should stay unchanged, so em & ex lengths should continue to mean the same * size. * * Lengths specified in the dying parent in em or ex need to be scaled according to the * ratio of em or ex size between parent & child. */ double const parent_child_em_ratio = parent->font_size.computed / style->font_size.computed; SPILength SPStyle::*const lfields[] = { &SPStyle::stroke_width, &SPStyle::text_indent }; for (unsigned i = 0; i < G_N_ELEMENTS(lfields); ++i) { SPILength SPStyle::*fld = lfields[i]; sp_style_merge_length_prop_from_dying_parent(style->*fld, parent->*fld, parent_child_em_ratio); } SPILengthOrNormal SPStyle::*const nfields[] = { &SPStyle::letter_spacing, &SPStyle::line_height, &SPStyle::word_spacing }; for (unsigned i = 0; i < G_N_ELEMENTS(nfields); ++i) { SPILengthOrNormal SPStyle::*fld = nfields[i]; sp_style_merge_length_prop_from_dying_parent(style->*fld, parent->*fld, parent_child_em_ratio); } //nyi: &SPStyle::kerning: length or `auto' /* fixme: Move stroke-dash and stroke-dash-offset here once they can accept units. */ } /* Properties that involve a URI but are easy in other respects. */ { /** \todo * Could cause problems if original object was in another document * and it used a relative URL. (At the time of writing, we don't * allow hrefs to other documents, so this isn't a problem yet.) * Paint properties also allow URIs. */ //nyi: cursor, // may involve change in effect, but we can't do much better //nyi: color-profile, // Markers (marker-start, marker-mid, marker-end). for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) { sp_style_merge_string_prop_from_dying_parent(style->marker[i], parent->marker[i]); } } /* CSS2 */ /* Font */ if (style->text && parent->text) { sp_style_merge_string_prop_from_dying_parent(style->text->font_specification, parent->text->font_specification); sp_style_merge_string_prop_from_dying_parent(style->text->font_family, parent->text->font_family); } /* Properties that don't inherit by default. Most of these need special handling. */ { /* * opacity's effect is cumulative; we set the new value to the combined effect. The * default value for opacity is 1.0, not inherit. (Note that stroke-opacity and * fill-opacity are quite different from opacity, and don't need any special handling.) * * Cases: * - parent & child were each previously unset, in which case the effective * opacity value is 1.0, and style should remain unset. * - parent was previously unset (so computed opacity value of 1.0) * and child was set to inherit. The merged child should * get a value of 1.0, and shouldn't inherit (lest the new parent * has a different opacity value). Given that opacity's default * value is 1.0 (rather than inherit), we might as well have the * merged child's opacity be unset. * - parent was previously unset (so opacity 1.0), and child was set to a number. * The merged child should retain its existing settings (though it doesn't matter * if we make it unset if that number was 1.0). * - parent was inherit and child was unset. Merged child should be set to inherit. * - parent was inherit and child was inherit. (We can't in general reproduce this * effect (short of introducing a new group), but setting opacity to inherit is rare.) * If the inherited value was strictly between 0.0 and 1.0 (exclusive) then the merged * child's value should be set to the product of the two, i.e. the square of the * inherited value, and should not be marked as inherit. (This decision assumes that it * is more important to retain the effective opacity than to retain the inheriting * effect, and assumes that the inheriting effect either isn't important enough to create * a group or isn't common enough to bother maintaining the code to create a group.) If * the inherited value was 0.0 or 1.0, then marking the merged child as inherit comes * closer to maintaining the effect. * - parent was inherit and child was set to a numerical value. If the child's value * was 1.0, then the merged child should have the same settings as the parent. * If the child's value was 0, then the merged child should also be set to 0. * If the child's value was anything else, then we do the same as for the inherit/inherit * case above: have the merged child set to the product of the two opacities and not * marked as inherit, for the same reasons as for that case. * - parent was set to a value, and child was unset. The merged child should have * parent's settings. * - parent was set to a value, and child was inherit. The merged child should * be set to the product, i.e. the square of the parent's value. * - parent & child are each set to a value. The merged child should be set to the * product. */ if ( !style->opacity.set || ( !style->opacity.inherit && style->opacity.value == SP_SCALE24_MAX ) ) { style->opacity = parent->opacity; } else { /* Ensure that style's computed value is up-to-date. */ if (style->opacity.inherit) { style->opacity.value = parent->opacity.value; } /* Multiplication of opacities occurs even if a child's opacity is set to inherit. */ style->opacity.value = SP_SCALE24_MUL(style->opacity.value, parent->opacity.value); style->opacity.inherit = (parent->opacity.inherit && style->opacity.inherit && (parent->opacity.value == 0 || parent->opacity.value == SP_SCALE24_MAX)); style->opacity.set = ( style->opacity.inherit || style->opacity.value < SP_SCALE24_MAX ); } /* display is in principle similar to opacity, but implementation is easier. */ if ( parent->display.set && !parent->display.inherit && parent->display.value == SP_CSS_DISPLAY_NONE ) { style->display.value = SP_CSS_DISPLAY_NONE; style->display.set = true; style->display.inherit = false; } else if (style->display.inherit) { style->display.value = parent->display.value; style->display.set = parent->display.set; style->display.inherit = parent->display.inherit; } else { /* Leave as is. (display doesn't inherit by default.) */ } /* enable-background - this is rather complicated, because * it is valid only when applied to container elements. * Let's check a simple case anyhow. */ if (parent->enable_background.set && !parent->enable_background.inherit && style->enable_background.inherit) { style->enable_background.set = true; style->enable_background.inherit = false; style->enable_background.value = parent->enable_background.value; } if (!style->filter.set || style->filter.inherit) { sp_style_merge_ifilter(style, &parent->filter); } /** \todo * fixme: Check that we correctly handle all properties that don't * inherit by default (as shown in * http://www.w3.org/TR/SVG11/propidx.html for most SVG 1.1 properties). */ } /* SPIPaint properties (including color). */ { /** \todo * Think about the issues involved if specified as currentColor or * if specified relative to colorProfile, and if the currentColor or * colorProfile differs between parent \& child. See also comments * elsewhere in this function about URIs. */ SPIPaint SPStyle::*const fields[] = { &SPStyle::color, &SPStyle::fill, &SPStyle::stroke }; for (unsigned i = 0; i < G_N_ELEMENTS(fields); ++i) { SPIPaint SPStyle::*const fld = fields[i]; sp_style_merge_paint_prop_from_dying_parent(style, style->*fld, parent->*fld); } } /* Things from SVG 1.2 or CSS3. */ { /* Note: If we ever support setting string values for text-align then we'd need strdup * handling here. */ sp_style_merge_prop_from_dying_parent(style->text_align, parent->text_align); sp_style_merge_prop_from_dying_parent(style->text_transform, parent->text_transform); sp_style_merge_prop_from_dying_parent(style->block_progression, parent->block_progression); } /* Note: this will need length handling once dasharray supports units. */ if ( ( !style->stroke_dasharray_set || style->stroke_dasharray_inherit ) && parent->stroke_dasharray_set && !parent->stroke_dasharray_inherit ) { style->stroke_dash.n_dash = parent->stroke_dash.n_dash; if (style->stroke_dash.n_dash > 0) { style->stroke_dash.dash = g_new(gdouble, style->stroke_dash.n_dash); memcpy(style->stroke_dash.dash, parent->stroke_dash.dash, style->stroke_dash.n_dash * sizeof(gdouble)); } style->stroke_dasharray_set = parent->stroke_dasharray_set; style->stroke_dasharray_inherit = parent->stroke_dasharray_inherit; } /* Note: this will need length handling once dasharray_offset supports units. */ if (!style->stroke_dashoffset_set && parent->stroke_dashoffset_set) { style->stroke_dash.offset = parent->stroke_dash.offset; style->stroke_dashoffset_set = parent->stroke_dashoffset_set; /* fixme: we don't currently allow stroke-dashoffset to be `inherit'. TODO: Try to * represent it as a normal SPILength; though will need to do something about existing * users of stroke_dash.offset and stroke_dashoffset_set. */ } } static void sp_style_set_ipaint_to_uri(SPStyle *style, SPIPaint *paint, const Inkscape::URI *uri, SPDocument *document) { // it may be that this style's SPIPaint has not yet created its URIReference; // now that we have a document, we can create it here if (!paint->value.href && document) { paint->value.href = new SPPaintServerReference(document); paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun((paint == &style->fill)? sp_style_fill_paint_server_ref_changed : sp_style_stroke_paint_server_ref_changed), style)); } if (paint->value.href && paint->value.href->getObject()) paint->value.href->detach(); if (paint->value.href) { try { paint->value.href->attach(*uri); } catch (Inkscape::BadURIException &e) { g_warning("%s", e.what()); paint->value.href->detach(); } } } static void sp_style_set_ipaint_to_uri_string (SPStyle *style, SPIPaint *paint, const gchar *uri) { try { const Inkscape::URI IURI(uri); sp_style_set_ipaint_to_uri(style, paint, &IURI, style->document); } catch (...) { g_warning("URI failed to parse: %s", uri); } } void sp_style_set_to_uri_string (SPStyle *style, bool isfill, const gchar *uri) { sp_style_set_ipaint_to_uri_string (style, isfill? &style->fill : &style->stroke, uri); } /** * */ static void sp_style_merge_ipaint(SPStyle *style, SPIPaint *paint, SPIPaint const *parent) { if ((paint->set && paint->currentcolor) || parent->currentcolor) { bool isset = paint->set; paint->clear(); paint->set = isset; paint->currentcolor = TRUE; paint->setColor(style->color.value.color); return; } paint->clear(); if ( parent->isPaintserver() ) { if (parent->value.href) { sp_style_set_ipaint_to_uri(style, paint, parent->value.href->getURI(), parent->value.href->getOwnerDocument()); } else { g_warning("Expected paint server not found."); } } else if ( parent->isColor() ) { paint->setColor( parent->value.color ); } else if ( parent->isNoneSet() ) { paint->noneSet = TRUE; } else if ( parent->isNone() ) { // } else { g_assert_not_reached(); } } /** * Merge filter style from parent. * Filter effects do not inherit by default */ static void sp_style_merge_ifilter(SPStyle *style, SPIFilter const *parent) { // FIXME: // instead of just copying over, we need to _really merge_ the two filters by combining their // filter primitives sp_style_filter_clear(style); style->filter.set = parent->set; style->filter.inherit = parent->inherit; if (style->filter.href && style->filter.href->getObject()) style->filter.href->detach(); // it may be that this style has not yet created its SPFilterReference if (!style->filter.href && style->object && SP_OBJECT_DOCUMENT(style->object)) { style->filter.href = new SPFilterReference(SP_OBJECT_DOCUMENT(style->object)); style->filter.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style)); } if (style->filter.href && parent->href && parent->href->getObject()) { try { style->filter.href->attach(*parent->href->getURI()); } catch (Inkscape::BadURIException &e) { g_warning("%s", e.what()); style->filter.href->detach(); } } } /** * Dumps the style to a CSS string, with either SP_STYLE_FLAG_IFSET or * SP_STYLE_FLAG_ALWAYS flags. Used with Always for copying an object's * complete cascaded style to style_clipboard. When you need a CSS string * for an object in the document tree, you normally call * sp_style_write_difference instead to take into account the object's parent. * * \pre style != NULL. * \pre flags in {IFSET, ALWAYS}. * \post ret != NULL. */ gchar * sp_style_write_string(SPStyle const *const style, guint const flags) { /** \todo * Merge with write_difference, much duplicate code! */ g_return_val_if_fail(style != NULL, NULL); g_return_val_if_fail(((flags == SP_STYLE_FLAG_IFSET) || (flags == SP_STYLE_FLAG_ALWAYS) ), NULL); gchar c[BMAX]; gchar *p = c; *p = '\0'; p += sp_style_write_ifontsize(p, c + BMAX - p, "font-size", &style->font_size, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "font-style", enum_font_style, &style->font_style, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "font-variant", enum_font_variant, &style->font_variant, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "font-weight", enum_font_weight, &style->font_weight, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "font-stretch", enum_font_stretch, &style->font_stretch, NULL, flags); /* Text */ p += sp_style_write_ilength(p, c + BMAX - p, "text-indent", &style->text_indent, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "text-align", enum_text_align, &style->text_align, NULL, flags); p += sp_style_write_itextdecoration(p, c + BMAX - p, "text-decoration", &style->text_decoration, NULL, flags); p += sp_style_write_ilengthornormal(p, c + BMAX - p, "line-height", &style->line_height, NULL, flags); p += sp_style_write_ilengthornormal(p, c + BMAX - p, "letter-spacing", &style->letter_spacing, NULL, flags); p += sp_style_write_ilengthornormal(p, c + BMAX - p, "word-spacing", &style->word_spacing, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "text-transform", enum_text_transform, &style->text_transform, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "direction", enum_direction, &style->direction, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "block-progression", enum_block_progression, &style->block_progression, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "writing-mode", enum_writing_mode, &style->writing_mode, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "text-anchor", enum_text_anchor, &style->text_anchor, NULL, flags); /// \todo fixme: Per type methods need default flag too (lauris) if (style->opacity.value != SP_SCALE24_MAX) { p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &style->opacity, NULL, flags); } if (!style->color.noneSet) { // CSS does not permit "none" for color p += sp_style_write_ipaint(p, c + BMAX - p, "color", &style->color, NULL, flags); } p += sp_style_write_ipaint(p, c + BMAX - p, "fill", &style->fill, NULL, flags); // if fill:none, skip writing fill properties if (!style->fill.noneSet) { p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &style->fill_opacity, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &style->fill_rule, NULL, flags); } p += sp_style_write_ipaint(p, c + BMAX - p, "stroke", &style->stroke, NULL, flags); // stroke width affects markers, so write it if there's stroke OR any markers if (!style->stroke.noneSet || style->marker[SP_MARKER_LOC].set || style->marker[SP_MARKER_LOC_START].set || style->marker[SP_MARKER_LOC_MID].set || style->marker[SP_MARKER_LOC_END].set) { p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &style->stroke_width, NULL, flags); } // if stroke:none, skip writing stroke properties if (!style->stroke.noneSet) { p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap, &style->stroke_linecap, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin, &style->stroke_linejoin, NULL, flags); p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit", &style->stroke_miterlimit, NULL, flags); p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &style->stroke_opacity, NULL, flags); /** \todo fixme: */ if ((flags == SP_STYLE_FLAG_ALWAYS) || style->stroke_dasharray_set) { if (style->stroke_dasharray_inherit) { p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;"); } else if (style->stroke_dash.n_dash && style->stroke_dash.dash) { p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:"); gint i; for (i = 0; i < style->stroke_dash.n_dash; i++) { Inkscape::CSSOStringStream os; if (i) { os << ", "; } os << style->stroke_dash.dash[i]; p += g_strlcpy(p, os.str().c_str(), c + BMAX - p); } if (p < c + BMAX) { *p++ = ';'; } } else { p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:none;"); } } /** \todo fixme: */ if (style->stroke_dashoffset_set) { Inkscape::CSSOStringStream os; os << "stroke-dashoffset:" << style->stroke_dash.offset << ";"; p += g_strlcpy(p, os.str().c_str(), c + BMAX - p); } else if (flags == SP_STYLE_FLAG_ALWAYS) { p += g_snprintf(p, c + BMAX - p, "stroke-dashoffset:0;"); } } bool marker_none = false; gchar *master = style->marker[SP_MARKER_LOC].value; if (style->marker[SP_MARKER_LOC].set) { p += g_snprintf(p, c + BMAX - p, "marker:%s;", style->marker[SP_MARKER_LOC].value); } else if (flags == SP_STYLE_FLAG_ALWAYS) { p += g_snprintf(p, c + BMAX - p, "marker:none;"); marker_none = true; } if (style->marker[SP_MARKER_LOC_START].set && (!master || strcmp(master, style->marker[SP_MARKER_LOC_START].value))) { p += g_snprintf(p, c + BMAX - p, "marker-start:%s;", style->marker[SP_MARKER_LOC_START].value); } else if (flags == SP_STYLE_FLAG_ALWAYS && !marker_none) { p += g_snprintf(p, c + BMAX - p, "marker-start:none;"); } if (style->marker[SP_MARKER_LOC_MID].set && (!master || strcmp(master, style->marker[SP_MARKER_LOC_MID].value))) { p += g_snprintf(p, c + BMAX - p, "marker-mid:%s;", style->marker[SP_MARKER_LOC_MID].value); } else if (flags == SP_STYLE_FLAG_ALWAYS && !marker_none) { p += g_snprintf(p, c + BMAX - p, "marker-mid:none;"); } if (style->marker[SP_MARKER_LOC_END].set && (!master || strcmp(master, style->marker[SP_MARKER_LOC_END].value))) { p += g_snprintf(p, c + BMAX - p, "marker-end:%s;", style->marker[SP_MARKER_LOC_END].value); } else if (flags == SP_STYLE_FLAG_ALWAYS && !marker_none) { p += g_snprintf(p, c + BMAX - p, "marker-end:none;"); } p += sp_style_write_ienum(p, c + BMAX - p, "visibility", enum_visibility, &style->visibility, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "display", enum_display, &style->display, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "overflow", enum_overflow, &style->overflow, NULL, flags); /* filter: */ p += sp_style_write_ifilter(p, c + BMAX - p, "filter", &style->filter, NULL, flags); p += sp_style_write_ienum(p, c + BMAX - p, "enable-background", enum_enable_background, &style->enable_background, NULL, flags); /* fixme: */ p += sp_text_style_write(p, c + BMAX - p, style->text, flags); /* Get rid of trailing `;'. */ if (p != c) { --p; if (*p == ';') { *p = '\0'; } } return g_strdup(c); } #define STYLE_BUF_MAX /** * Dumps style to CSS string, see sp_style_write_string() * * \pre from != NULL. * \pre to != NULL. * \post ret != NULL. */ gchar * sp_style_write_difference(SPStyle const *const from, SPStyle const *const to) { g_return_val_if_fail(from != NULL, NULL); g_return_val_if_fail(to != NULL, NULL); gchar c[BMAX], *p = c; *p = '\0'; p += sp_style_write_ifontsize(p, c + BMAX - p, "font-size", &from->font_size, &to->font_size, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "font-style", enum_font_style, &from->font_style, &to->font_style, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "font-variant", enum_font_variant, &from->font_variant, &to->font_variant, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "font-weight", enum_font_weight, &from->font_weight, &to->font_weight, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "font-stretch", enum_font_stretch, &from->font_stretch, &to->font_stretch, SP_STYLE_FLAG_IFDIFF); /* Text */ p += sp_style_write_ilength(p, c + BMAX - p, "text-indent", &from->text_indent, &to->text_indent, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "text-align", enum_text_align, &from->text_align, &to->text_align, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_itextdecoration(p, c + BMAX - p, "text-decoration", &from->text_decoration, &to->text_decoration, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ilengthornormal(p, c + BMAX - p, "line-height", &from->line_height, &to->line_height, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ilengthornormal(p, c + BMAX - p, "letter-spacing", &from->letter_spacing, &to->letter_spacing, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ilengthornormal(p, c + BMAX - p, "word-spacing", &from->word_spacing, &to->word_spacing, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "text-transform", enum_text_transform, &from->text_transform, &to->text_transform, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "direction", enum_direction, &from->direction, &to->direction, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "block-progression", enum_block_progression, &from->block_progression, &to->block_progression, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "writing-mode", enum_writing_mode, &from->writing_mode, &to->writing_mode, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "text-anchor", enum_text_anchor, &from->text_anchor, &to->text_anchor, SP_STYLE_FLAG_IFDIFF); /// \todo fixme: Per type methods need default flag too if (from->opacity.set && from->opacity.value != SP_SCALE24_MAX) { p += sp_style_write_iscale24(p, c + BMAX - p, "opacity", &from->opacity, &to->opacity, SP_STYLE_FLAG_IFSET); } if (!from->color.noneSet) { // CSS does not permit "none" for color p += sp_style_write_ipaint(p, c + BMAX - p, "color", &from->color, &to->color, SP_STYLE_FLAG_IFSET); } p += sp_style_write_ipaint(p, c + BMAX - p, "fill", &from->fill, &to->fill, SP_STYLE_FLAG_IFDIFF); // if fill:none, skip writing fill properties if (!from->fill.noneSet) { p += sp_style_write_iscale24(p, c + BMAX - p, "fill-opacity", &from->fill_opacity, &to->fill_opacity, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "fill-rule", enum_fill_rule, &from->fill_rule, &to->fill_rule, SP_STYLE_FLAG_IFDIFF); } p += sp_style_write_ipaint(p, c + BMAX - p, "stroke", &from->stroke, &to->stroke, SP_STYLE_FLAG_IFDIFF); // stroke width affects markers, so write it if there's stroke OR any markers if (!from->stroke.noneSet || from->marker[SP_MARKER_LOC].set || from->marker[SP_MARKER_LOC_START].set || from->marker[SP_MARKER_LOC_MID].set || from->marker[SP_MARKER_LOC_END].set) { p += sp_style_write_ilength(p, c + BMAX - p, "stroke-width", &from->stroke_width, &to->stroke_width, SP_STYLE_FLAG_IFDIFF); } // if stroke:none, skip writing stroke properties if (!from->stroke.noneSet) { p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linecap", enum_stroke_linecap, &from->stroke_linecap, &to->stroke_linecap, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "stroke-linejoin", enum_stroke_linejoin, &from->stroke_linejoin, &to->stroke_linejoin, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ifloat(p, c + BMAX - p, "stroke-miterlimit", &from->stroke_miterlimit, &to->stroke_miterlimit, SP_STYLE_FLAG_IFDIFF); /** \todo fixme: */ if (from->stroke_dasharray_set) { if (from->stroke_dasharray_inherit) { p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:inherit;"); } else if (from->stroke_dash.n_dash && from->stroke_dash.dash) { p += g_snprintf(p, c + BMAX - p, "stroke-dasharray:"); for (gint i = 0; i < from->stroke_dash.n_dash; i++) { Inkscape::CSSOStringStream os; if (i) { os << ", "; } os << from->stroke_dash.dash[i]; p += g_strlcpy(p, os.str().c_str(), c + BMAX - p); } p += g_snprintf(p, c + BMAX - p, ";"); } } /* fixme: */ if (from->stroke_dashoffset_set) { Inkscape::CSSOStringStream os; os << "stroke-dashoffset:" << from->stroke_dash.offset << ";"; p += g_strlcpy(p, os.str().c_str(), c + BMAX - p); } p += sp_style_write_iscale24(p, c + BMAX - p, "stroke-opacity", &from->stroke_opacity, &to->stroke_opacity, SP_STYLE_FLAG_IFDIFF); } /* markers */ gchar *master = from->marker[SP_MARKER_LOC].value; if (master != NULL) { p += g_snprintf(p, c + BMAX - p, "marker:%s;", master); } if (from->marker[SP_MARKER_LOC_START].value != NULL && (!master || strcmp(master, from->marker[SP_MARKER_LOC_START].value))) { p += g_snprintf(p, c + BMAX - p, "marker-start:%s;", from->marker[SP_MARKER_LOC_START].value); } if (from->marker[SP_MARKER_LOC_MID].value != NULL && (!master || strcmp(master, from->marker[SP_MARKER_LOC_MID].value))) { p += g_snprintf(p, c + BMAX - p, "marker-mid:%s;", from->marker[SP_MARKER_LOC_MID].value); } if (from->marker[SP_MARKER_LOC_END].value != NULL && (!master || strcmp(master, from->marker[SP_MARKER_LOC_END].value))) { p += g_snprintf(p, c + BMAX - p, "marker-end:%s;", from->marker[SP_MARKER_LOC_END].value); } p += sp_style_write_ienum(p, c + BMAX - p, "visibility", enum_visibility, &from->visibility, &to->visibility, SP_STYLE_FLAG_IFSET); p += sp_style_write_ienum(p, c + BMAX - p, "display", enum_display, &from->display, &to->display, SP_STYLE_FLAG_IFSET); p += sp_style_write_ienum(p, c + BMAX - p, "overflow", enum_overflow, &from->overflow, &to->overflow, SP_STYLE_FLAG_IFSET); /* filter: */ p += sp_style_write_ifilter(p, c + BMAX - p, "filter", &from->filter, &to->filter, SP_STYLE_FLAG_IFDIFF); p += sp_style_write_ienum(p, c + BMAX - p, "enable-background", enum_enable_background, &from->enable_background, &to->enable_background, SP_STYLE_FLAG_IFSET); p += sp_text_style_write(p, c + BMAX - p, from->text, SP_STYLE_FLAG_IFDIFF); /** \todo * The reason we use IFSET rather than IFDIFF is the belief that the IFDIFF * flag is mainly only for attributes that don't handle explicit unset well. * We may need to revisit the behaviour of this routine. */ /* Get rid of trailing `;'. */ if (p != c) { --p; if (*p == ';') { *p = '\0'; } } return g_strdup(c); } /** * Reset all style properties. */ static void sp_style_clear(SPStyle *style) { g_return_if_fail(style != NULL); style->fill.clear(); style->stroke.clear(); sp_style_filter_clear(style); if (style->fill.value.href) { delete style->fill.value.href; style->fill.value.href = NULL; } if (style->stroke.value.href) { delete style->stroke.value.href; style->stroke.value.href = NULL; } if (style->filter.href) { delete style->filter.href; style->filter.href = NULL; } if (style->stroke_dash.dash) { g_free(style->stroke_dash.dash); } /** \todo fixme: Do that text manipulation via parents */ SPObject *object = style->object; SPDocument *document = style->document; gint const refcount = style->refcount; SPTextStyle *text = style->text; unsigned const text_private = style->text_private; memset(style, 0, sizeof(SPStyle)); style->refcount = refcount; style->object = object; style->document = document; if (document) { style->filter.href = new SPFilterReference(document); style->filter.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style)); style->fill.value.href = new SPPaintServerReference(document); style->fill.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_fill_paint_server_ref_changed), style)); style->stroke.value.href = new SPPaintServerReference(document); style->stroke.value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_stroke_paint_server_ref_changed), style)); } style->text = text; style->text_private = text_private; style->text->font_specification.set = FALSE; style->text->font.set = FALSE; style->text->font_family.set = FALSE; style->font_size.set = FALSE; style->font_size.type = SP_FONT_SIZE_LITERAL; style->font_size.value = SP_CSS_FONT_SIZE_MEDIUM; style->font_size.computed = 12.0; style->font_style.set = FALSE; style->font_style.value = style->font_style.computed = SP_CSS_FONT_STYLE_NORMAL; style->font_variant.set = FALSE; style->font_variant.value = style->font_variant.computed = SP_CSS_FONT_VARIANT_NORMAL; style->font_weight.set = FALSE; style->font_weight.value = SP_CSS_FONT_WEIGHT_NORMAL; style->font_weight.computed = SP_CSS_FONT_WEIGHT_400; style->font_stretch.set = FALSE; style->font_stretch.value = style->font_stretch.computed = SP_CSS_FONT_STRETCH_NORMAL; /* text */ style->text_indent.set = FALSE; style->text_indent.unit = SP_CSS_UNIT_NONE; style->text_indent.computed = 0.0; style->text_align.set = FALSE; style->text_align.value = style->text_align.computed = SP_CSS_TEXT_ALIGN_START; style->text_decoration.set = FALSE; style->text_decoration.underline = FALSE; style->text_decoration.overline = FALSE; style->text_decoration.line_through = FALSE; style->text_decoration.blink = FALSE; style->line_height.set = FALSE; style->line_height.unit = SP_CSS_UNIT_PERCENT; style->line_height.normal = TRUE; style->line_height.value = style->line_height.computed = 1.0; style->letter_spacing.set = FALSE; style->letter_spacing.unit = SP_CSS_UNIT_NONE; style->letter_spacing.normal = TRUE; style->letter_spacing.value = style->letter_spacing.computed = 0.0; style->word_spacing.set = FALSE; style->word_spacing.unit = SP_CSS_UNIT_NONE; style->word_spacing.normal = TRUE; style->word_spacing.value = style->word_spacing.computed = 0.0; style->text_transform.set = FALSE; style->text_transform.value = style->text_transform.computed = SP_CSS_TEXT_TRANSFORM_NONE; style->direction.set = FALSE; style->direction.value = style->direction.computed = SP_CSS_DIRECTION_LTR; style->block_progression.set = FALSE; style->block_progression.value = style->block_progression.computed = SP_CSS_BLOCK_PROGRESSION_TB; style->writing_mode.set = FALSE; style->writing_mode.value = style->writing_mode.computed = SP_CSS_WRITING_MODE_LR_TB; style->text_anchor.set = FALSE; style->text_anchor.value = style->text_anchor.computed = SP_CSS_TEXT_ANCHOR_START; style->opacity.value = SP_SCALE24_MAX; style->visibility.set = FALSE; style->visibility.value = style->visibility.computed = SP_CSS_VISIBILITY_VISIBLE; style->display.set = FALSE; style->display.value = style->display.computed = SP_CSS_DISPLAY_INLINE; style->overflow.set = FALSE; style->overflow.value = style->overflow.computed = SP_CSS_OVERFLOW_VISIBLE; style->color.clear(); style->color.setColor(0.0, 0.0, 0.0); style->fill.clear(); style->fill.setColor(0.0, 0.0, 0.0); style->fill_opacity.value = SP_SCALE24_MAX; style->fill_rule.value = style->fill_rule.computed = SP_WIND_RULE_NONZERO; style->stroke.clear(); style->stroke_opacity.value = SP_SCALE24_MAX; style->stroke_width.set = FALSE; style->stroke_width.unit = SP_CSS_UNIT_NONE; style->stroke_width.computed = 1.0; style->stroke_linecap.set = FALSE; style->stroke_linecap.value = style->stroke_linecap.computed = SP_STROKE_LINECAP_BUTT; style->stroke_linejoin.set = FALSE; style->stroke_linejoin.value = style->stroke_linejoin.computed = SP_STROKE_LINEJOIN_MITER; style->stroke_miterlimit.set = FALSE; style->stroke_miterlimit.value = 4.0; style->stroke_dash.n_dash = 0; style->stroke_dash.dash = NULL; style->stroke_dash.offset = 0.0; for (unsigned i = SP_MARKER_LOC; i < SP_MARKER_LOC_QTY; i++) { g_free(style->marker[i].value); style->marker[i].set = FALSE; } style->enable_background.value = SP_CSS_BACKGROUND_ACCUMULATE; style->enable_background.set = false; style->enable_background.inherit = false; } /** * */ static void sp_style_read_dash(SPStyle *style, gchar const *str) { /* Ref: http://www.w3.org/TR/SVG11/painting.html#StrokeDasharrayProperty */ style->stroke_dasharray_set = TRUE; if (strcmp(str, "inherit") == 0) { style->stroke_dasharray_inherit = true; return; } style->stroke_dasharray_inherit = false; NRVpathDash &dash = style->stroke_dash; g_free(dash.dash); dash.dash = NULL; if (strcmp(str, "none") == 0) { dash.n_dash = 0; return; } gint n_dash = 0; gdouble d[64]; gchar *e = NULL; bool LineSolid=true; while (e != str && n_dash < 64) { /* TODO: Should allow rather than just a unitless (px) number. */ d[n_dash] = g_ascii_strtod(str, (char **) &e); if (d[n_dash] > 0.00000001) LineSolid = false; if (e != str) { n_dash += 1; str = e; } while (str && *str && !isalnum(*str)) str += 1; } if (LineSolid) { dash.n_dash = 0; return; } if (n_dash > 0) { dash.dash = g_new(gdouble, n_dash); memcpy(dash.dash, d, sizeof(gdouble) * n_dash); dash.n_dash = n_dash; } } /*######################### ## SPTextStyle operations #########################*/ /** * Return new SPTextStyle object with default settings. */ static SPTextStyle * sp_text_style_new() { SPTextStyle *ts = g_new0(SPTextStyle, 1); ts->refcount = 1; sp_text_style_clear(ts); ts->font_specification.value = g_strdup("Bitstream Vera Sans"); ts->font.value = g_strdup("Bitstream Vera Sans"); ts->font_family.value = g_strdup("Bitstream Vera Sans"); return ts; } /** * Clear text style settings. */ static void sp_text_style_clear(SPTextStyle *ts) { ts->font_specification.set = FALSE; ts->font.set = FALSE; ts->font_family.set = FALSE; } /** * Reduce refcount of text style and possibly free it. */ static SPTextStyle * sp_text_style_unref(SPTextStyle *st) { st->refcount -= 1; if (st->refcount < 1) { g_free(st->font_specification.value); g_free(st->font.value); g_free(st->font_family.value); g_free(st); } return NULL; } /** * Return duplicate of text style. */ static SPTextStyle * sp_text_style_duplicate_unset(SPTextStyle *st) { SPTextStyle *nt = g_new0(SPTextStyle, 1); nt->refcount = 1; nt->font_specification.value = g_strdup(st->font_specification.value); nt->font.value = g_strdup(st->font.value); nt->font_family.value = g_strdup(st->font_family.value); return nt; } /** * Write SPTextStyle object into string. */ static guint sp_text_style_write(gchar *p, guint const len, SPTextStyle const *const st, guint flags) { gint d = 0; // We do not do diffing for text style if (flags == SP_STYLE_FLAG_IFDIFF) flags = SP_STYLE_FLAG_IFSET; d += sp_style_write_istring(p + d, len - d, "font-family", &st->font_family, NULL, flags); d += sp_style_write_istring(p + d, len - d, "-inkscape-font-specification", &st->font_specification, NULL, flags); return d; } /* The following sp_tyle_read_* functions ignore invalid values, as per * http://www.w3.org/TR/REC-CSS2/syndata.html#parsing-errors. * * [However, the SVG spec is somewhat unclear as to whether the style attribute should * be handled as per CSS2 rules or whether it must simply be a set of PROPERTY:VALUE * pairs, in which case SVG's error-handling rules * http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing should instead be applied.] */ /** * Set SPIFloat object from string. */ static void sp_style_read_ifloat(SPIFloat *val, gchar const *str) { if (!strcmp(str, "inherit")) { val->set = TRUE; val->inherit = TRUE; } else { gfloat value; if (sp_svg_number_read_f(str, &value)) { val->set = TRUE; val->inherit = FALSE; val->value = value; } } } /** * Set SPIScale24 object from string. */ static void sp_style_read_iscale24(SPIScale24 *val, gchar const *str) { if (!strcmp(str, "inherit")) { val->set = TRUE; val->inherit = TRUE; } else { gfloat value; if (sp_svg_number_read_f(str, &value)) { val->set = TRUE; val->inherit = FALSE; value = CLAMP(value, 0.0, 1.0); val->value = SP_SCALE24_FROM_FLOAT(value); } } } /** * Reads a style value and performs lookup based on the given style value enumerations. */ static void sp_style_read_ienum(SPIEnum *val, gchar const *str, SPStyleEnum const *dict, bool const can_explicitly_inherit) { if ( can_explicitly_inherit && !strcmp(str, "inherit") ) { val->set = TRUE; val->inherit = TRUE; } else { for (unsigned i = 0; dict[i].key; i++) { if (!strcmp(str, dict[i].key)) { val->set = TRUE; val->inherit = FALSE; val->value = dict[i].value; /* Save copying for values not needing it */ val->computed = val->value; break; } } } } /** * Set SPIString object from string. */ static void sp_style_read_istring(SPIString *val, gchar const *str) { g_free(val->value); if (!strcmp(str, "inherit")) { val->set = TRUE; val->inherit = TRUE; val->value = NULL; } else { val->set = TRUE; val->inherit = FALSE; val->value = g_strdup(str); } } /** * Set SPILength object from string. */ static void sp_style_read_ilength(SPILength *val, gchar const *str) { if (!strcmp(str, "inherit")) { val->set = TRUE; val->inherit = TRUE; } else { gdouble value; gchar *e; /** \todo fixme: Move this to standard place (Lauris) */ value = g_ascii_strtod(str, &e); if ((gchar const *) e != str) { /** \todo * Allow the number of px per inch to vary (document preferences, * X server or whatever). E.g. don't fill in computed here, do * it at the same time as percentage units are done. */ if (!*e) { /* Userspace */ val->unit = SP_CSS_UNIT_NONE; val->computed = value; } else if (!strcmp(e, "px")) { /* Userspace */ val->unit = SP_CSS_UNIT_PX; val->computed = value; } else if (!strcmp(e, "pt")) { /* Userspace / DEVICESCALE */ val->unit = SP_CSS_UNIT_PT; val->computed = value * PX_PER_PT; } else if (!strcmp(e, "pc")) { /* 1 pica = 12pt; FIXME: add it to SPUnit */ val->unit = SP_CSS_UNIT_PC; val->computed = value * PX_PER_PT * 12; } else if (!strcmp(e, "mm")) { val->unit = SP_CSS_UNIT_MM; val->computed = value * PX_PER_MM; } else if (!strcmp(e, "cm")) { val->unit = SP_CSS_UNIT_CM; val->computed = value * PX_PER_CM; } else if (!strcmp(e, "in")) { val->unit = SP_CSS_UNIT_IN; val->computed = value * PX_PER_IN; } else if (!strcmp(e, "em")) { /* EM square */ val->unit = SP_CSS_UNIT_EM; val->value = value; } else if (!strcmp(e, "ex")) { /* ex square */ val->unit = SP_CSS_UNIT_EX; val->value = value; } else if (!strcmp(e, "%")) { /* Percentage */ val->unit = SP_CSS_UNIT_PERCENT; val->value = value * 0.01; } else { /* Invalid */ return; } val->set = TRUE; val->inherit = FALSE; } } } /** * Set SPILengthOrNormal object from string. */ static void sp_style_read_ilengthornormal(SPILengthOrNormal *val, gchar const *str) { if (!strcmp(str, "normal")) { val->set = TRUE; val->inherit = FALSE; val->normal = TRUE; val->unit = SP_CSS_UNIT_NONE; val->value = val->computed = 0.0; } else { SPILength length; sp_style_read_ilength(&length, str); val->set = length.set; val->inherit = length.inherit; val->normal = FALSE; val->unit = length.unit; val->value = length.value; val->computed = length.computed; } } /** * Set SPITextDecoration object from string. */ static void sp_style_read_itextdecoration(SPITextDecoration *val, gchar const *str) { if (!strcmp(str, "inherit")) { val->set = TRUE; val->inherit = TRUE; } else if (!strcmp(str, "none")) { val->set = TRUE; val->inherit = FALSE; val->underline = FALSE; val->overline = FALSE; val->line_through = FALSE; val->blink = FALSE; } else { bool found_underline = false; bool found_overline = false; bool found_line_through = false; bool found_blink = false; for ( ; *str ; str++ ) { if (*str == ' ') continue; if (strneq(str, "underline", 9) && (str[9] == ' ' || str[9] == '\0')) { found_underline = true; str += 9; } else if (strneq(str, "overline", 8) && (str[8] == ' ' || str[8] == '\0')) { found_overline = true; str += 8; } else if (strneq(str, "line-through", 12) && (str[12] == ' ' || str[12] == '\0')) { found_line_through = true; str += 12; } else if (strneq(str, "blink", 5) && (str[5] == ' ' || str[5] == '\0')) { found_blink = true; str += 5; } else { return; // invalid value } } if (!(found_underline || found_overline || found_line_through || found_blink)) { return; // invalid value: empty } val->set = TRUE; val->inherit = FALSE; val->underline = found_underline; val->overline = found_overline; val->line_through = found_line_through; val->blink = found_blink; } } /** * Set SPIPaint object from string containing an integer value. * \param document Ignored */ static void sp_style_read_icolor(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document) { (void)style; // TODO (void)document; // TODO paint->currentcolor = FALSE; /* currentColor not a valid . */ if (!strcmp(str, "inherit")) { paint->set = TRUE; paint->inherit = TRUE; } else { guint32 const rgb0 = sp_svg_read_color(str, 0xff); if (rgb0 != 0xff) { paint->setColor(rgb0); paint->set = TRUE; paint->inherit = FALSE; } } } /** * Set SPIPaint object from string. * * \pre paint == \&style.fill || paint == \&style.stroke. */ static void sp_style_read_ipaint(SPIPaint *paint, gchar const *str, SPStyle *style, SPDocument *document) { while (g_ascii_isspace(*str)) { ++str; } paint->clear(); if (streq(str, "inherit")) { paint->set = TRUE; paint->inherit = TRUE; } else { if ( strneq(str, "url", 3) ) { gchar *uri = extract_uri( str, &str ); while ( g_ascii_isspace(*str) ) { ++str; } // TODO check on and comment the comparrison "paint != &style->color". if ( uri && *uri && (paint != &style->color) ) { paint->set = TRUE; // it may be that this style's SPIPaint has not yet created its URIReference; // now that we have a document, we can create it here if (!paint->value.href && document) { paint->value.href = new SPPaintServerReference(document); paint->value.href->changedSignal().connect(sigc::bind(sigc::ptr_fun((paint == &style->fill)? sp_style_fill_paint_server_ref_changed : sp_style_stroke_paint_server_ref_changed), style)); } // TODO check what this does in light of move away from union sp_style_set_ipaint_to_uri_string (style, paint, uri); } g_free( uri ); } if (streq(str, "currentColor") && paint != &style->color) { paint->set = TRUE; paint->currentcolor = TRUE; } else if (streq(str, "none") && paint != &style->color) { paint->set = TRUE; paint->noneSet = TRUE; } else { guint32 const rgb0 = sp_svg_read_color(str, &str, 0xff); if (rgb0 != 0xff) { paint->setColor( rgb0 ); paint->set = TRUE; while (g_ascii_isspace(*str)) { ++str; } if (strneq(str, "icc-color(", 10)) { SVGICCColor* tmp = new SVGICCColor(); if ( ! sp_svg_read_icc_color( str, &str, tmp ) ) { delete tmp; tmp = 0; } paint->value.color.icc = tmp; } } } } } /** * Set SPIFontSize object from string. */ static void sp_style_read_ifontsize(SPIFontSize *val, gchar const *str) { if (!strcmp(str, "inherit")) { val->set = TRUE; val->inherit = TRUE; } else if ((*str == 'x') || (*str == 's') || (*str == 'm') || (*str == 'l')) { for (unsigned i = 0; enum_font_size[i].key; i++) { if (!strcmp(str, enum_font_size[i].key)) { val->set = TRUE; val->inherit = FALSE; val->type = SP_FONT_SIZE_LITERAL; val->value = enum_font_size[i].value; return; } } /* Invalid */ return; } else { gdouble value; gchar *e; /* fixme: Move this to standard place (Lauris) */ value = g_ascii_strtod(str, &e); if ((gchar const *) e != str) { if (!*e) { /* Userspace */ } else if (!strcmp(e, "px")) { /* Userspace */ } else if (!strcmp(e, "pt")) { /* Userspace * DEVICESCALE */ value *= PX_PER_PT; } else if (!strcmp(e, "pc")) { /* 12pt */ value *= PX_PER_PT * 12.0; } else if (!strcmp(e, "mm")) { value *= PX_PER_MM; } else if (!strcmp(e, "cm")) { value *= PX_PER_CM; } else if (!strcmp(e, "in")) { value *= PX_PER_IN; } else if (!strcmp(e, "%")) { /* Percentage */ val->set = TRUE; val->inherit = FALSE; val->type = SP_FONT_SIZE_PERCENTAGE; val->value = SP_F8_16_FROM_FLOAT(value / 100.0); return; } else { /* Invalid */ return; } /* Length */ val->set = TRUE; val->inherit = FALSE; val->type = SP_FONT_SIZE_LENGTH; val->computed = value; return; } } } /** * Set SPIFilter object from string. */ static void sp_style_read_ifilter(gchar const *str, SPStyle * style, SPDocument *document) { SPIFilter *f = &(style->filter); /* Try all possible values: inherit, none, uri */ if (streq(str, "inherit")) { f->set = TRUE; f->inherit = TRUE; if (f->href && f->href->getObject()) f->href->detach(); } else if(streq(str, "none")) { f->set = TRUE; f->inherit = FALSE; if (f->href && f->href->getObject()) f->href->detach(); } else if (strneq(str, "url", 3)) { char *uri = extract_uri(str); if(uri == NULL || uri[0] == '\0') { g_warning("Specified filter url is empty"); f->set = TRUE; f->inherit = FALSE; return; } f->set = TRUE; f->inherit = FALSE; if (f->href && f->href->getObject()) f->href->detach(); // it may be that this style has not yet created its SPFilterReference; // now that we have a document, we can create it here if (!f->href && document) { f->href = new SPFilterReference(document); f->href->changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_style_filter_ref_changed), style)); } try { f->href->attach(Inkscape::URI(uri)); } catch (Inkscape::BadURIException &e) { g_warning("%s", e.what()); f->href->detach(); } g_free (uri); } else { /* We shouldn't reach this if SVG input is well-formed */ f->set = FALSE; f->inherit = FALSE; if (f->href && f->href->getObject()) f->href->detach(); } } /** * Set SPIEnum object from repr attribute. */ static void sp_style_read_penum(SPIEnum *val, Inkscape::XML::Node *repr, gchar const *key, SPStyleEnum const *dict, bool const can_explicitly_inherit) { gchar const *str = repr->attribute(key); if (str) { sp_style_read_ienum(val, str, dict, can_explicitly_inherit); } } /** * Set SPILength object from repr attribute. */ static void sp_style_read_plength(SPILength *val, Inkscape::XML::Node *repr, gchar const *key) { gchar const *str = repr->attribute(key); if (str) { sp_style_read_ilength(val, str); } } /** * Set SPIFontSize object from repr attribute. */ static void sp_style_read_pfontsize(SPIFontSize *val, Inkscape::XML::Node *repr, gchar const *key) { gchar const *str = repr->attribute(key); if (str) { sp_style_read_ifontsize(val, str); } } /** * Set SPIFloat object from repr attribute. */ static void sp_style_read_pfloat(SPIFloat *val, Inkscape::XML::Node *repr, gchar const *key) { gchar const *str = repr->attribute(key); if (str) { sp_style_read_ifloat(val, str); } } /** * Write SPIFloat object into string. */ static gint sp_style_write_ifloat(gchar *p, gint const len, gchar const *const key, SPIFloat const *const val, SPIFloat const *const base, guint const flags) { Inkscape::CSSOStringStream os; if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || (val->value != base->value)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else { os << key << ":" << val->value << ";"; return g_strlcpy(p, os.str().c_str(), len); } } return 0; } /** * Write SPIScale24 object into string. */ static gint sp_style_write_iscale24(gchar *p, gint const len, gchar const *const key, SPIScale24 const *const val, SPIScale24 const *const base, guint const flags) { Inkscape::CSSOStringStream os; if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || (val->value != base->value)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else { os << key << ":" << SP_SCALE24_TO_FLOAT(val->value) << ";"; return g_strlcpy(p, os.str().c_str(), len); } } return 0; } /** * Write SPIEnum object into string. */ static gint sp_style_write_ienum(gchar *p, gint const len, gchar const *const key, SPStyleEnum const *const dict, SPIEnum const *const val, SPIEnum const *const base, guint const flags) { if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || (val->computed != base->computed)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } for (unsigned i = 0; dict[i].key; i++) { if (dict[i].value == static_cast< gint > (val->value) ) { return g_snprintf(p, len, "%s:%s;", key, dict[i].key); } } } return 0; } /** * Write SPIString object into string. */ static gint sp_style_write_istring(gchar *p, gint const len, gchar const *const key, SPIString const *const val, SPIString const *const base, guint const flags) { if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || strcmp(val->value, base->value)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else { gchar *val_quoted = css2_escape_quote(val->value); if (val_quoted) { return g_snprintf(p, len, "%s:%s;", key, val_quoted); g_free (val_quoted); } } } return 0; } /** * */ static bool sp_length_differ(SPILength const *const a, SPILength const *const b) { if (a->unit != b->unit) { if (a->unit == SP_CSS_UNIT_EM) return true; if (a->unit == SP_CSS_UNIT_EX) return true; if (a->unit == SP_CSS_UNIT_PERCENT) return true; if (b->unit == SP_CSS_UNIT_EM) return true; if (b->unit == SP_CSS_UNIT_EX) return true; if (b->unit == SP_CSS_UNIT_PERCENT) return true; } return (a->computed != b->computed); } /** * Write SPILength object into string. */ static gint sp_style_write_ilength(gchar *p, gint const len, gchar const *const key, SPILength const *const val, SPILength const *const base, guint const flags) { Inkscape::CSSOStringStream os; if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || sp_length_differ(val, base)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else { switch (val->unit) { case SP_CSS_UNIT_NONE: os << key << ":" << val->computed << ";"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_PX: os << key << ":" << val->computed << "px;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_PT: os << key << ":" << val->computed * PT_PER_PX << "pt;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_PC: os << key << ":" << val->computed * PT_PER_PX / 12.0 << "pc;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_MM: os << key << ":" << val->computed * MM_PER_PX << "mm;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_CM: os << key << ":" << val->computed * CM_PER_PX << "cm;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_IN: os << key << ":" << val->computed * IN_PER_PX << "in;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_EM: os << key << ":" << val->value << "em;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_EX: os << key << ":" << val->value << "ex;"; return g_strlcpy(p, os.str().c_str(), len); break; case SP_CSS_UNIT_PERCENT: os << key << ":" << (val->value * 100.0) << "%;"; return g_strlcpy(p, os.str().c_str(), len); break; default: /* Invalid */ break; } } } return 0; } /** * */ static bool sp_lengthornormal_differ(SPILengthOrNormal const *const a, SPILengthOrNormal const *const b) { if (a->normal != b->normal) return true; if (a->normal) return false; if (a->unit != b->unit) { if (a->unit == SP_CSS_UNIT_EM) return true; if (a->unit == SP_CSS_UNIT_EX) return true; if (a->unit == SP_CSS_UNIT_PERCENT) return true; if (b->unit == SP_CSS_UNIT_EM) return true; if (b->unit == SP_CSS_UNIT_EX) return true; if (b->unit == SP_CSS_UNIT_PERCENT) return true; } return (a->computed != b->computed); } /** * Write SPILengthOrNormal object into string. */ static gint sp_style_write_ilengthornormal(gchar *p, gint const len, gchar const *const key, SPILengthOrNormal const *const val, SPILengthOrNormal const *const base, guint const flags) { if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || sp_lengthornormal_differ(val, base)))) { if (val->normal) { return g_snprintf(p, len, "%s:normal;", key); } else { SPILength length; length.set = val->set; length.inherit = val->inherit; length.unit = val->unit; length.value = val->value; length.computed = val->computed; return sp_style_write_ilength(p, len, key, &length, NULL, SP_STYLE_FLAG_ALWAYS); } } return 0; } /** * */ static bool sp_textdecoration_differ(SPITextDecoration const *const a, SPITextDecoration const *const b) { return a->underline != b->underline || a->overline != b->overline || a->line_through != b->line_through || a->blink != b->blink; } /** * Write SPITextDecoration object into string. */ static gint sp_style_write_itextdecoration(gchar *p, gint const len, gchar const *const key, SPITextDecoration const *const val, SPITextDecoration const *const base, guint const flags) { Inkscape::CSSOStringStream os; if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || sp_textdecoration_differ(val, base)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else { os << key << ":"; if (val->underline || val->overline || val->line_through || val->blink) { if (val->underline) os << " underline"; if (val->overline) os << " overline"; if (val->line_through) os << " line-through"; if (val->blink) os << " blink"; } else os << "none"; os << ";"; return g_strlcpy(p, os.str().c_str(), len); } } return 0; } /** * */ static bool sp_paint_differ(SPIPaint const *const a, SPIPaint const *const b) { if ( (a->isColor() != b->isColor()) || (a->isPaintserver() != b->isPaintserver()) || (a->set != b->set) || (a->currentcolor != b->currentcolor) || (a->inherit!= b->inherit) ) { return true; } // TODO refactor to allow for mixed paints (rgb() *and* url(), etc) if ( a->isPaintserver() ) { return (a->value.href == NULL || b->value.href == NULL || a->value.href->getObject() != b->value.href->getObject()); } if ( a->isColor() ) { return !( (a->value.color == b->value.color) && ((a->value.color.icc == b->value.color.icc) || (a->value.color.icc && b->value.color.icc && (a->value.color.icc->colorProfile == b->value.color.icc->colorProfile) && (a->value.color.icc->colors == b->value.color.icc->colors)))); /* todo: Allow for epsilon differences in iccColor->colors, e.g. changes small enough not to show up * in the string representation. */ } return false; } /** * Write SPIPaint object into string. */ static gint sp_style_write_ipaint(gchar *b, gint const len, gchar const *const key, SPIPaint const *const paint, SPIPaint const *const base, guint const flags) { int retval = 0; if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && paint->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && paint->set && (!base->set || sp_paint_differ(paint, base)))) { CSSOStringStream css; if (paint->inherit) { css << "inherit"; } else { if ( paint->value.href && paint->value.href->getURI() ) { const gchar* uri = paint->value.href->getURI()->toString(); css << "url(" << uri << ")"; } if ( paint->noneSet ) { if ( !css.str().empty() ) { css << " "; } css << "none"; } if ( paint->currentcolor ) { if ( !css.str().empty() ) { css << " "; } css << "currentColor"; } if ( paint->colorSet && !paint->currentcolor ) { if ( !css.str().empty() ) { css << " "; } char color_buf[8]; sp_svg_write_color(color_buf, sizeof(color_buf), paint->value.color.toRGBA32( 0 )); css << color_buf; } if (paint->value.color.icc && !paint->currentcolor) { if ( !css.str().empty() ) { css << " "; } css << "icc-color(" << paint->value.color.icc->colorProfile; for (vector::const_iterator i(paint->value.color.icc->colors.begin()), iEnd(paint->value.color.icc->colors.end()); i != iEnd; ++i) { css << ", " << *i; } css << ')'; } } if ( !css.str().empty() ) { retval = g_snprintf( b, len, "%s:%s;", key, css.str().c_str() ); } } return retval; } /** * */ static bool sp_fontsize_differ(SPIFontSize const *const a, SPIFontSize const *const b) { if (a->type != b->type) return true; if (a->type == SP_FONT_SIZE_LENGTH) { if (a->computed != b->computed) return true; } else { if (a->value != b->value) return true; } return false; } /** * Write SPIFontSize object into string. */ static gint sp_style_write_ifontsize(gchar *p, gint const len, gchar const *key, SPIFontSize const *const val, SPIFontSize const *const base, guint const flags) { if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set && (!base->set || sp_fontsize_differ(val, base)))) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else if (val->type == SP_FONT_SIZE_LITERAL) { for (unsigned i = 0; enum_font_size[i].key; i++) { if (enum_font_size[i].value == static_cast< gint > (val->value) ) { return g_snprintf(p, len, "%s:%s;", key, enum_font_size[i].key); } } } else if (val->type == SP_FONT_SIZE_LENGTH) { Inkscape::CSSOStringStream os; os << key << ":" << val->computed << "px;"; // must specify px, see inkscape bug 1221626, mozilla bug 234789 return g_strlcpy(p, os.str().c_str(), len); } else if (val->type == SP_FONT_SIZE_PERCENTAGE) { Inkscape::CSSOStringStream os; os << key << ":" << (SP_F8_16_TO_FLOAT(val->value) * 100.0) << "%;"; return g_strlcpy(p, os.str().c_str(), len); } } return 0; } /** * Write SPIFilter object into string. */ static gint sp_style_write_ifilter(gchar *p, gint const len, gchar const *key, SPIFilter const *const val, SPIFilter const *const base, guint const flags) { (void)base; // TODO if ((flags & SP_STYLE_FLAG_ALWAYS) || ((flags & SP_STYLE_FLAG_IFSET) && val->set) || ((flags & SP_STYLE_FLAG_IFDIFF) && val->set)) { if (val->inherit) { return g_snprintf(p, len, "%s:inherit;", key); } else if (val->href && val->href->getURI()) { return g_snprintf(p, len, "%s:url(%s);", key, val->href->getURI()->toString()); } } return 0; } void SPIPaint::clear() { set = false; inherit = false; currentcolor = false; colorSet = false; noneSet = false; value.color.set( 0 ); if ( value.href && value.href->getObject() ) { value.href->detach(); } } /** * Clear filter object, and disconnect style from paintserver (if present). */ static void sp_style_filter_clear(SPStyle *style) { if (style->filter.href && style->filter.href->getObject()) style->filter.href->detach(); } // FIXME: Everything below this line belongs in a different file - css-chemistry? void sp_style_set_property_url (SPObject *item, gchar const *property, SPObject *linked, bool recursive) { Inkscape::XML::Node *repr = SP_OBJECT_REPR(item); if (repr == NULL) return; SPCSSAttr *css = sp_repr_css_attr_new(); if (linked) { gchar *val = g_strdup_printf("url(#%s)", SP_OBJECT_ID(linked)); sp_repr_css_set_property(css, property, val); g_free(val); } else { sp_repr_css_unset_property(css, "filter"); } if (recursive) { sp_repr_css_change_recursive(repr, css, "style"); } else { sp_repr_css_change(repr, css, "style"); } sp_repr_css_attr_unref(css); } /** * Clear all style property attributes in object. */ void sp_style_unset_property_attrs(SPObject *o) { if (!o) return; SPStyle *style = SP_OBJECT_STYLE(o); if (!style) return; Inkscape::XML::Node *repr = SP_OBJECT_REPR(o); if (!repr) return; if (style->opacity.set) { repr->setAttribute("opacity", NULL); } if (style->color.set) { repr->setAttribute("color", NULL); } if (style->fill.set) { repr->setAttribute("fill", NULL); } if (style->fill_opacity.set) { repr->setAttribute("fill-opacity", NULL); } if (style->fill_rule.set) { repr->setAttribute("fill-rule", NULL); } if (style->stroke.set) { repr->setAttribute("stroke", NULL); } if (style->stroke_width.set) { repr->setAttribute("stroke-width", NULL); } if (style->stroke_linecap.set) { repr->setAttribute("stroke-linecap", NULL); } if (style->stroke_linejoin.set) { repr->setAttribute("stroke-linejoin", NULL); } if (style->marker[SP_MARKER_LOC].set) { repr->setAttribute("marker", NULL); } if (style->marker[SP_MARKER_LOC_START].set) { repr->setAttribute("marker-start", NULL); } if (style->marker[SP_MARKER_LOC_MID].set) { repr->setAttribute("marker-mid", NULL); } if (style->marker[SP_MARKER_LOC_END].set) { repr->setAttribute("marker-end", NULL); } if (style->stroke_opacity.set) { repr->setAttribute("stroke-opacity", NULL); } if (style->stroke_dasharray_set) { repr->setAttribute("stroke-dasharray", NULL); } if (style->stroke_dashoffset_set) { repr->setAttribute("stroke-dashoffset", NULL); } if (style->text_private && style->text->font_specification.set) { repr->setAttribute("-inkscape-font-specification", NULL); } if (style->text_private && style->text->font_family.set) { repr->setAttribute("font-family", NULL); } if (style->text_anchor.set) { repr->setAttribute("text-anchor", NULL); } if (style->writing_mode.set) { repr->setAttribute("writing_mode", NULL); } if (style->filter.set) { repr->setAttribute("filter", NULL); } if (style->enable_background.set) { repr->setAttribute("enable-background", NULL); } } /** * \pre style != NULL. * \pre flags in {IFSET, ALWAYS}. */ SPCSSAttr * sp_css_attr_from_style(SPStyle const *const style, guint const flags) { g_return_val_if_fail(style != NULL, NULL); g_return_val_if_fail(((flags == SP_STYLE_FLAG_IFSET) || (flags == SP_STYLE_FLAG_ALWAYS) ), NULL); gchar *style_str = sp_style_write_string(style, flags); SPCSSAttr *css = sp_repr_css_attr_new(); sp_repr_css_attr_add_from_string(css, style_str); g_free(style_str); return css; } /** * \pre object != NULL * \pre flags in {IFSET, ALWAYS}. */ SPCSSAttr * sp_css_attr_from_object(SPObject *object, guint const flags) { g_return_val_if_fail(((flags == SP_STYLE_FLAG_IFSET) || (flags == SP_STYLE_FLAG_ALWAYS) ), NULL); SPStyle const *const style = SP_OBJECT_STYLE(object); if (style == NULL) return NULL; return sp_css_attr_from_style(style, flags); } /** * Unset any text-related properties */ SPCSSAttr * sp_css_attr_unset_text(SPCSSAttr *css) { sp_repr_css_set_property(css, "font", NULL); // not implemented yet sp_repr_css_set_property(css, "-inkscape-font-specification", NULL); sp_repr_css_set_property(css, "font-size", NULL); sp_repr_css_set_property(css, "font-size-adjust", NULL); // not implemented yet sp_repr_css_set_property(css, "font-style", NULL); sp_repr_css_set_property(css, "font-variant", NULL); sp_repr_css_set_property(css, "font-weight", NULL); sp_repr_css_set_property(css, "font-stretch", NULL); sp_repr_css_set_property(css, "font-family", NULL); sp_repr_css_set_property(css, "text-indent", NULL); sp_repr_css_set_property(css, "text-align", NULL); sp_repr_css_set_property(css, "text-decoration", NULL); sp_repr_css_set_property(css, "line-height", NULL); sp_repr_css_set_property(css, "letter-spacing", NULL); sp_repr_css_set_property(css, "word-spacing", NULL); sp_repr_css_set_property(css, "text-transform", NULL); sp_repr_css_set_property(css, "direction", NULL); sp_repr_css_set_property(css, "block-progression", NULL); sp_repr_css_set_property(css, "writing-mode", NULL); sp_repr_css_set_property(css, "text-anchor", NULL); sp_repr_css_set_property(css, "kerning", NULL); // not implemented yet sp_repr_css_set_property(css, "dominant-baseline", NULL); // not implemented yet sp_repr_css_set_property(css, "alignment-baseline", NULL); // not implemented yet sp_repr_css_set_property(css, "baseline-shift", NULL); // not implemented yet return css; } bool is_url(char const *p) { if (p == NULL) return false; /** \todo * FIXME: I'm not sure if this applies to SVG as well, but CSS2 says any URIs * in property values must start with 'url('. */ return (g_ascii_strncasecmp(p, "url(", 4) == 0); } /** * Unset any properties that contain URI values. * * Used for storing style that will be reused across documents when carrying * the referenced defs is impractical. */ SPCSSAttr * sp_css_attr_unset_uris(SPCSSAttr *css) { // All properties that may hold or according to SVG 1.1 if (is_url(sp_repr_css_property(css, "clip-path", NULL))) sp_repr_css_set_property(css, "clip-path", NULL); if (is_url(sp_repr_css_property(css, "color-profile", NULL))) sp_repr_css_set_property(css, "color-profile", NULL); if (is_url(sp_repr_css_property(css, "cursor", NULL))) sp_repr_css_set_property(css, "cursor", NULL); if (is_url(sp_repr_css_property(css, "filter", NULL))) sp_repr_css_set_property(css, "filter", NULL); if (is_url(sp_repr_css_property(css, "marker", NULL))) sp_repr_css_set_property(css, "marker", NULL); if (is_url(sp_repr_css_property(css, "marker-start", NULL))) sp_repr_css_set_property(css, "marker-start", NULL); if (is_url(sp_repr_css_property(css, "marker-mid", NULL))) sp_repr_css_set_property(css, "marker-mid", NULL); if (is_url(sp_repr_css_property(css, "marker-end", NULL))) sp_repr_css_set_property(css, "marker-end", NULL); if (is_url(sp_repr_css_property(css, "mask", NULL))) sp_repr_css_set_property(css, "mask", NULL); if (is_url(sp_repr_css_property(css, "fill", NULL))) sp_repr_css_set_property(css, "fill", NULL); if (is_url(sp_repr_css_property(css, "stroke", NULL))) sp_repr_css_set_property(css, "stroke", NULL); return css; } /** * Scale a single-value property. */ void sp_css_attr_scale_property_single(SPCSSAttr *css, gchar const *property, double ex, bool only_with_units = false) { gchar const *w = sp_repr_css_property(css, property, NULL); if (w) { gchar *units = NULL; double wd = g_ascii_strtod(w, &units) * ex; if (w == units) {// nothing converted, non-numeric value return; } if (only_with_units && (units == NULL || *units == '\0' || *units == '%')) { // only_with_units, but no units found, so do nothing. return; } Inkscape::CSSOStringStream os; os << wd << units; // reattach units sp_repr_css_set_property(css, property, os.str().c_str()); } } /** * Scale a list-of-values property. */ void sp_css_attr_scale_property_list(SPCSSAttr *css, gchar const *property, double ex) { gchar const *string = sp_repr_css_property(css, property, NULL); if (string) { Inkscape::CSSOStringStream os; gchar **a = g_strsplit(string, ",", 10000); bool first = true; for (gchar **i = a; i != NULL; i++) { gchar *w = *i; if (w == NULL) break; gchar *units = NULL; double wd = g_ascii_strtod(w, &units) * ex; if (w == units) {// nothing converted, non-numeric value ("none" or "inherit"); do nothing g_strfreev(a); return; } if (!first) { os << ","; } os << wd << units; // reattach units first = false; } sp_repr_css_set_property(css, property, os.str().c_str()); g_strfreev(a); } } /** * Scale any properties that may hold by ex. */ SPCSSAttr * sp_css_attr_scale(SPCSSAttr *css, double ex) { sp_css_attr_scale_property_single(css, "baseline-shift", ex); sp_css_attr_scale_property_single(css, "stroke-width", ex); sp_css_attr_scale_property_list (css, "stroke-dasharray", ex); sp_css_attr_scale_property_single(css, "stroke-dashoffset", ex); sp_css_attr_scale_property_single(css, "font-size", ex); sp_css_attr_scale_property_single(css, "kerning", ex); sp_css_attr_scale_property_single(css, "letter-spacing", ex); sp_css_attr_scale_property_single(css, "word-spacing", ex); sp_css_attr_scale_property_single(css, "line-height", ex, true); return css; } /** * Remove quotes and escapes from a string. Returned value must be g_free'd. * Note: in CSS (in style= and in stylesheets), unquoting and unescaping is done * by libcroco, our CSS parser, though it adds a new pair of "" quotes for the strings * it parsed for us. So this function is only used to remove those quotes and for * presentation attributes, without any unescaping. (XML unescaping * (& etc) is done by XML parser.) */ gchar * attribute_unquote(gchar const *val) { if (val) { if (*val == '\'' || *val == '"') { int l = strlen(val); if (l >= 2) { if ( ( val[0] == '"' && val[l - 1] == '"' ) || ( val[0] == '\'' && val[l - 1] == '\'' ) ) { return (g_strndup (val+1, l-2)); } } } } return (val? g_strdup (val) : NULL); } /** * Quote and/or escape string for writing to CSS (style=). Returned value must be g_free'd. */ gchar * css2_escape_quote(gchar const *val) { Glib::ustring t; bool quote = false; bool last_was_space = false; for (gchar const *i = val; *i; i++) { bool is_space = ( *i == ' ' ); if (g_ascii_isalnum(*i) || *i=='-' || *i=='_') { // ASCII alphanumeric, - and _ don't require quotes t.push_back(*i); } else if ( is_space && !last_was_space ) { // non-consecutive spaces don't require quotes t.push_back(*i); } else if (*i=='\'') { // single quotes require escaping and quotes t.push_back('\\'); t.push_back(*i); quote = true; } else { // everything else requires quotes t.push_back(*i); quote = true; } if (i == val && !g_ascii_isalpha(*i)) { // a non-ASCII/non-alpha initial character requires quotes quote = true; } last_was_space = is_space; } if (last_was_space) { // a trailing space requires quotes quote = true; } if (quote) { // we use single quotes so the result can be stored in an XML // attribute without incurring un-aesthetic additional quoting // (our XML emitter always uses double quotes) t.insert(t.begin(), '\''); t.push_back('\''); } return (t.empty() ? NULL : g_strdup (t.c_str())); } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :