summaryrefslogtreecommitdiffstats
path: root/src/sp-text.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/sp-text.cpp')
-rw-r--r--src/sp-text.cpp913
1 files changed, 913 insertions, 0 deletions
diff --git a/src/sp-text.cpp b/src/sp-text.cpp
new file mode 100644
index 000000000..3bbb3b892
--- /dev/null
+++ b/src/sp-text.cpp
@@ -0,0 +1,913 @@
+/*
+ * SVG <text> and <tspan> implementation
+ *
+ * Author:
+ * Lauris Kaplinski <lauris@kaplinski.com>
+ * bulia byak <buliabyak@users.sf.net>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+/*
+ * fixme:
+ *
+ * These subcomponents should not be items, or alternately
+ * we have to invent set of flags to mark, whether standard
+ * attributes are applicable to given item (I even like this
+ * idea somewhat - Lauris)
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <libnr/nr-matrix-fns.h>
+#include <libnrtype/FontFactory.h>
+#include <libnrtype/font-instance.h>
+#include <libnrtype/font-style-to-pos.h>
+
+#include <glibmm/i18n.h>
+#include "svg/svg.h"
+#include "svg/stringstream.h"
+#include "display/nr-arena-glyphs.h"
+#include "attributes.h"
+#include "document.h"
+#include "desktop-handles.h"
+#include "sp-namedview.h"
+#include "style.h"
+#include "inkscape.h"
+#include "sp-metrics.h"
+#include "xml/quote.h"
+#include "xml/repr.h"
+#include "mod360.h"
+
+#include "sp-textpath.h"
+#include "sp-tspan.h"
+
+#include "text-editing.h"
+
+/*#####################################################
+# SPTEXT
+#####################################################*/
+
+static void sp_text_class_init (SPTextClass *classname);
+static void sp_text_init (SPText *text);
+static void sp_text_release (SPObject *object);
+
+static void sp_text_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
+static void sp_text_set (SPObject *object, unsigned key, gchar const *value);
+static void sp_text_child_added (SPObject *object, Inkscape::XML::Node *rch, Inkscape::XML::Node *ref);
+static void sp_text_remove_child (SPObject *object, Inkscape::XML::Node *rch);
+static void sp_text_update (SPObject *object, SPCtx *ctx, guint flags);
+static void sp_text_modified (SPObject *object, guint flags);
+static Inkscape::XML::Node *sp_text_write (SPObject *object, Inkscape::XML::Node *repr, guint flags);
+
+static void sp_text_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const flags);
+static NRArenaItem *sp_text_show (SPItem *item, NRArena *arena, unsigned key, unsigned flags);
+static void sp_text_hide (SPItem *item, unsigned key);
+static char *sp_text_description (SPItem *item);
+static void sp_text_snappoints(SPItem const *item, SnapPointsIter p);
+static NR::Matrix sp_text_set_transform(SPItem *item, NR::Matrix const &xform);
+static void sp_text_print (SPItem *item, SPPrintContext *gpc);
+
+static SPItemClass *text_parent_class;
+
+GType
+sp_text_get_type ()
+{
+ static GType type = 0;
+ if (!type) {
+ GTypeInfo info = {
+ sizeof (SPTextClass),
+ NULL, /* base_init */
+ NULL, /* base_finalize */
+ (GClassInitFunc) sp_text_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (SPText),
+ 16, /* n_preallocs */
+ (GInstanceInitFunc) sp_text_init,
+ NULL, /* value_table */
+ };
+ type = g_type_register_static (SP_TYPE_ITEM, "SPText", &info, (GTypeFlags)0);
+ }
+ return type;
+}
+
+static void
+sp_text_class_init (SPTextClass *classname)
+{
+ SPObjectClass *sp_object_class = (SPObjectClass *) classname;
+ SPItemClass *item_class = (SPItemClass *) classname;
+
+ text_parent_class = (SPItemClass*)g_type_class_ref (SP_TYPE_ITEM);
+
+ sp_object_class->release = sp_text_release;
+ sp_object_class->build = sp_text_build;
+ sp_object_class->set = sp_text_set;
+ sp_object_class->child_added = sp_text_child_added;
+ sp_object_class->remove_child = sp_text_remove_child;
+ sp_object_class->update = sp_text_update;
+ sp_object_class->modified = sp_text_modified;
+ sp_object_class->write = sp_text_write;
+
+ item_class->bbox = sp_text_bbox;
+ item_class->show = sp_text_show;
+ item_class->hide = sp_text_hide;
+ item_class->description = sp_text_description;
+ item_class->snappoints = sp_text_snappoints;
+ item_class->set_transform = sp_text_set_transform;
+ item_class->print = sp_text_print;
+}
+
+static void
+sp_text_init (SPText *text)
+{
+ new (&text->layout) Inkscape::Text::Layout;
+ new (&text->attributes) TextTagAttributes;
+}
+
+static void
+sp_text_release (SPObject *object)
+{
+ SPText *text = SP_TEXT(object);
+ text->attributes.~TextTagAttributes();
+ text->layout.~Layout();
+
+ if (((SPObjectClass *) text_parent_class)->release)
+ ((SPObjectClass *) text_parent_class)->release(object);
+}
+
+static void
+sp_text_build (SPObject *object, SPDocument *doc, Inkscape::XML::Node *repr)
+{
+ sp_object_read_attr(object, "x");
+ sp_object_read_attr(object, "y");
+ sp_object_read_attr(object, "dx");
+ sp_object_read_attr(object, "dy");
+ sp_object_read_attr(object, "rotate");
+
+ if (((SPObjectClass *) text_parent_class)->build)
+ ((SPObjectClass *) text_parent_class)->build(object, doc, repr);
+
+ sp_object_read_attr(object, "sodipodi:linespacing"); // has to happen after the styles are read
+}
+
+static void
+sp_text_set(SPObject *object, unsigned key, gchar const *value)
+{
+ SPText *text = SP_TEXT (object);
+
+ if (text->attributes.readSingleAttribute(key, value)) {
+ object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+ } else {
+ switch (key) {
+ case SP_ATTR_SODIPODI_LINESPACING:
+ // convert deprecated tag to css
+ if (value) {
+ text->style->line_height.set = TRUE;
+ text->style->line_height.inherit = FALSE;
+ text->style->line_height.normal = FALSE;
+ text->style->line_height.unit = SP_CSS_UNIT_PERCENT;
+ text->style->line_height.value = text->style->line_height.computed = sp_svg_read_percentage (value, 1.0);
+ }
+ object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_LAYOUT_MODIFIED_FLAG);
+ break;
+ default:
+ if (((SPObjectClass *) text_parent_class)->set)
+ ((SPObjectClass *) text_parent_class)->set (object, key, value);
+ break;
+ }
+ }
+}
+
+static void
+sp_text_child_added (SPObject *object, Inkscape::XML::Node *rch, Inkscape::XML::Node *ref)
+{
+ SPText *text = SP_TEXT (object);
+
+ if (((SPObjectClass *) text_parent_class)->child_added)
+ ((SPObjectClass *) text_parent_class)->child_added (object, rch, ref);
+
+ text->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_CONTENT_MODIFIED_FLAG);
+}
+
+static void
+sp_text_remove_child (SPObject *object, Inkscape::XML::Node *rch)
+{
+ SPText *text = SP_TEXT (object);
+
+ if (((SPObjectClass *) text_parent_class)->remove_child)
+ ((SPObjectClass *) text_parent_class)->remove_child (object, rch);
+
+ text->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_CONTENT_MODIFIED_FLAG | SP_TEXT_LAYOUT_MODIFIED_FLAG);
+}
+
+static void
+sp_text_update (SPObject *object, SPCtx *ctx, guint flags)
+{
+ SPText *text = SP_TEXT (object);
+
+ if (((SPObjectClass *) text_parent_class)->update)
+ ((SPObjectClass *) text_parent_class)->update (object, ctx, flags);
+
+ guint cflags = (flags & SP_OBJECT_MODIFIED_CASCADE);
+ if (flags & SP_OBJECT_MODIFIED_FLAG) cflags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+
+
+ /* Create temporary list of children */
+ GSList *l = NULL;
+ for (SPObject *child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ sp_object_ref (SP_OBJECT (child), object);
+ l = g_slist_prepend (l, child);
+ }
+ l = g_slist_reverse (l);
+ while (l) {
+ SPObject *child = SP_OBJECT (l->data);
+ l = g_slist_remove (l, child);
+ if (cflags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+ /* fixme: Do we need transform? */
+ child->updateDisplay(ctx, cflags);
+ }
+ sp_object_unref (SP_OBJECT (child), object);
+ }
+ if (flags & ( SP_OBJECT_STYLE_MODIFIED_FLAG |
+ SP_OBJECT_CHILD_MODIFIED_FLAG |
+ SP_TEXT_LAYOUT_MODIFIED_FLAG ) )
+ {
+ /* fixme: It is not nice to have it here, but otherwise children content changes does not work */
+ /* fixme: Even now it may not work, as we are delayed */
+ /* fixme: So check modification flag everywhere immediate state is used */
+ text->rebuildLayout();
+
+ NRRect paintbox;
+ sp_item_invoke_bbox(text, &paintbox, NR::identity(), TRUE);
+ for (SPItemView* v = text->display; v != NULL; v = v->next) {
+ text->_clearFlow(NR_ARENA_GROUP(v->arenaitem));
+ // pass the bbox of the text object as paintbox (used for paintserver fills)
+ text->layout.show(NR_ARENA_GROUP(v->arenaitem), &paintbox);
+ }
+ }
+}
+
+static void
+sp_text_modified (SPObject *object, guint flags)
+{
+ if (((SPObjectClass *) text_parent_class)->modified)
+ ((SPObjectClass *) text_parent_class)->modified (object, flags);
+
+ guint cflags = (flags & SP_OBJECT_MODIFIED_CASCADE);
+ if (flags & SP_OBJECT_MODIFIED_FLAG) cflags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+
+ /* Create temporary list of children */
+ GSList *l = NULL;
+ SPObject *child;
+ for (child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ sp_object_ref (SP_OBJECT (child), object);
+ l = g_slist_prepend (l, child);
+ }
+ l = g_slist_reverse (l);
+ while (l) {
+ child = SP_OBJECT (l->data);
+ l = g_slist_remove (l, child);
+ if (cflags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+ child->emitModified(cflags);
+ }
+ sp_object_unref (SP_OBJECT (child), object);
+ }
+}
+
+static Inkscape::XML::Node *
+sp_text_write (SPObject *object, Inkscape::XML::Node *repr, guint flags)
+{
+ SPText *text = SP_TEXT (object);
+
+ if (flags & SP_OBJECT_WRITE_BUILD) {
+ if (!repr)
+ repr = sp_repr_new ("svg:text");
+ GSList *l = NULL;
+ for (SPObject *child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ Inkscape::XML::Node *crepr = NULL;
+ if (SP_IS_STRING(child)) {
+ crepr = sp_repr_new_text(SP_STRING(child)->string.c_str());
+ } else {
+ crepr = child->updateRepr(NULL, flags);
+ }
+ if (crepr) l = g_slist_prepend (l, crepr);
+ }
+ while (l) {
+ repr->addChild((Inkscape::XML::Node *) l->data, NULL);
+ Inkscape::GC::release((Inkscape::XML::Node *) l->data);
+ l = g_slist_remove (l, l->data);
+ }
+ } else {
+ for (SPObject *child = sp_object_first_child(object) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ if (SP_IS_STRING(child)) {
+ SP_OBJECT_REPR(child)->setContent(SP_STRING(child)->string.c_str());
+ } else {
+ child->updateRepr(flags);
+ }
+ }
+ }
+
+ text->attributes.writeTo(repr);
+
+ // deprecated attribute, but keep it around for backwards compatibility
+ if (text->style->line_height.set && !text->style->line_height.inherit && !text->style->line_height.normal && text->style->line_height.unit == SP_CSS_UNIT_PERCENT) {
+ Inkscape::SVGOStringStream os;
+ os << (text->style->line_height.value * 100.0) << "%";
+ SP_OBJECT_REPR(text)->setAttribute("sodipodi:linespacing", os.str().c_str());
+ }
+ else
+ SP_OBJECT_REPR(text)->setAttribute("sodipodi:linespacing", NULL);
+
+ if (((SPObjectClass *) (text_parent_class))->write)
+ ((SPObjectClass *) (text_parent_class))->write (object, repr, flags);
+
+ return repr;
+}
+
+static void
+sp_text_bbox(SPItem const *item, NRRect *bbox, NR::Matrix const &transform, unsigned const /*flags*/)
+{
+ SP_TEXT(item)->layout.getBoundingBox(bbox, transform);
+
+ // Add stroke width
+ SPStyle* style=SP_OBJECT_STYLE (item);
+ if (style->stroke.type != SP_PAINT_TYPE_NONE) {
+ double const scale = expansion(transform);
+ if ( fabs(style->stroke_width.computed * scale) > 0.01 ) { // sinon c'est 0=oon veut pas de bord
+ double const width = MAX(0.125, style->stroke_width.computed * scale);
+ if ( fabs(bbox->x1 - bbox->x0) > -0.00001 && fabs(bbox->y1 - bbox->y0) > -0.00001 ) {
+ bbox->x0-=0.5*width;
+ bbox->x1+=0.5*width;
+ bbox->y0-=0.5*width;
+ bbox->y1+=0.5*width;
+ }
+ }
+ }
+}
+
+
+static NRArenaItem *
+sp_text_show(SPItem *item, NRArena *arena, unsigned /* key*/, unsigned /*flags*/)
+{
+ SPText *group = (SPText *) item;
+
+ NRArenaGroup *flowed = NRArenaGroup::create(arena);
+ nr_arena_group_set_transparent (flowed, FALSE);
+
+ // pass the bbox of the text object as paintbox (used for paintserver fills)
+ NRRect paintbox;
+ sp_item_invoke_bbox(item, &paintbox, NR::identity(), TRUE);
+ group->layout.show(flowed, &paintbox);
+
+ return flowed;
+}
+
+static void
+sp_text_hide(SPItem *item, unsigned key)
+{
+ if (((SPItemClass *) text_parent_class)->hide)
+ ((SPItemClass *) text_parent_class)->hide (item, key);
+}
+
+static char *
+sp_text_description(SPItem *item)
+{
+ SPText *text = (SPText *) item;
+ SPStyle *style = SP_OBJECT_STYLE(text);
+
+ font_instance *tf = (font_factory::Default())->Face(style->text->font_family.value,
+ font_style_to_pos(*style));
+ char name_buf[256];
+ char *n;
+ if (tf) {
+ tf->Name(name_buf, sizeof(name_buf));
+ n = xml_quote_strdup(name_buf);
+ tf->Unref();
+ } else {
+ /* TRANSLATORS: For description of font with no name. */
+ n = g_strdup(_("&lt;no name found&gt;"));
+ }
+
+ GString *xs = SP_PX_TO_METRIC_STRING(style->font_size.computed, SP_DT_NAMEDVIEW(SP_ACTIVE_DESKTOP)->getDefaultMetric());
+
+ char *ret = ( SP_IS_TEXT_TEXTPATH(item)
+ ? g_strdup_printf(_("<b>Text on path</b> (%s, %s)"), n, xs->str)
+ : g_strdup_printf(_("<b>Text</b> (%s, %s)"), n, xs->str) );
+ g_free(n);
+ return ret;
+}
+
+static void sp_text_snappoints(SPItem const *item, SnapPointsIter p)
+{
+ // the baseline anchor of the first char
+ Inkscape::Text::Layout const *layout = te_get_layout((SPItem *) item);
+ if(layout != NULL) {
+ *p = layout->characterAnchorPoint(layout->begin()) * sp_item_i2d_affine(item);
+ }
+}
+
+static NR::Matrix
+sp_text_set_transform (SPItem *item, NR::Matrix const &xform)
+{
+ SPText *text = SP_TEXT(item);
+
+ // we cannot optimize textpath because changing its fontsize will break its match to the path
+ if (SP_IS_TEXT_TEXTPATH (text))
+ return xform;
+
+ /* This function takes care of scaling & translation only, we return whatever parts we can't
+ handle. */
+
+// TODO: pjrm tried to use fontsize_expansion(xform) here and it works for text in that font size
+// is scaled more intuitively when scaling non-uniformly; however this necessitated using
+// fontsize_expansion instead of expansion in other places too, where it was not appropriate
+// (e.g. it broke stroke width on copy/pasting of style from horizontally stretched to vertically
+// stretched shape). Using fontsize_expansion only here broke setting the style via font
+// dialog. This needs to be investigated further.
+ double const ex = NR::expansion(xform);
+ if (ex == 0) {
+ return xform;
+ }
+
+ NR::Matrix ret(NR::transform(xform));
+ ret[0] /= ex;
+ ret[1] /= ex;
+ ret[2] /= ex;
+ ret[3] /= ex;
+
+ // Adjust x/y, dx/dy
+ text->_adjustCoordsRecursive (item, xform * ret.inverse(), ex);
+
+ // Adjust font size
+ text->_adjustFontsizeRecursive (item, ex);
+
+ // Adjust stroke width
+ sp_item_adjust_stroke_width_recursive (item, ex);
+
+ // Adjust pattern fill
+ sp_item_adjust_pattern(item, xform * ret.inverse());
+
+ // Adjust gradient fill
+ sp_item_adjust_gradient(item, xform * ret.inverse());
+
+ item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_TEXT_LAYOUT_MODIFIED_FLAG);
+
+ return ret;
+}
+
+static void
+sp_text_print (SPItem *item, SPPrintContext *ctx)
+{
+ NRRect pbox, dbox, bbox;
+ SPText *group = SP_TEXT (item);
+
+ sp_item_invoke_bbox(item, &pbox, NR::identity(), TRUE);
+ sp_item_bbox_desktop (item, &bbox);
+ dbox.x0 = 0.0;
+ dbox.y0 = 0.0;
+ dbox.x1 = sp_document_width (SP_OBJECT_DOCUMENT (item));
+ dbox.y1 = sp_document_height (SP_OBJECT_DOCUMENT (item));
+ NR::Matrix const ctm = sp_item_i2d_affine(item);
+
+ group->layout.print(ctx,&pbox,&dbox,&bbox,ctm);
+}
+
+/*
+ * Member functions
+ */
+
+unsigned SPText::_buildLayoutInput(SPObject *root, Inkscape::Text::Layout::OptionalTextTagAttrs const &parent_optional_attrs, unsigned parent_attrs_offset, bool in_textpath)
+{
+ unsigned length = 0;
+ int child_attrs_offset = 0;
+ Inkscape::Text::Layout::OptionalTextTagAttrs optional_attrs;
+
+ if (SP_IS_TEXT(root)) {
+ SP_TEXT(root)->attributes.mergeInto(&optional_attrs, parent_optional_attrs, parent_attrs_offset, true, true);
+ }
+ else if (SP_IS_TSPAN(root)) {
+ SPTSpan *tspan = SP_TSPAN(root);
+ bool use_xy = !in_textpath && (tspan->role == SP_TSPAN_ROLE_UNSPECIFIED || !tspan->attributes.singleXYCoordinates());
+ tspan->attributes.mergeInto(&optional_attrs, parent_optional_attrs, parent_attrs_offset, use_xy, true);
+ }
+ else if (SP_IS_TEXTPATH(root)) {
+ in_textpath = true;
+ SP_TEXTPATH(root)->attributes.mergeInto(&optional_attrs, parent_optional_attrs, parent_attrs_offset, false, true);
+ optional_attrs.x.clear();
+ optional_attrs.y.clear();
+ }
+ else {
+ optional_attrs = parent_optional_attrs;
+ child_attrs_offset = parent_attrs_offset;
+ }
+
+ if (SP_IS_TSPAN(root))
+ if (SP_TSPAN(root)->role != SP_TSPAN_ROLE_UNSPECIFIED) {
+ // we need to allow the first line not to have role=line, but still set the source_cookie to the right value
+ SPObject *prev_object = SP_OBJECT_PREV(root);
+ if (prev_object && SP_IS_TSPAN(prev_object)) {
+ if (!layout.inputExists())
+ layout.appendText("", prev_object->style, prev_object, &optional_attrs);
+ layout.appendControlCode(Inkscape::Text::Layout::PARAGRAPH_BREAK, prev_object);
+ }
+ if (!root->hasChildren())
+ layout.appendText("", root->style, root, &optional_attrs);
+ length++; // interpreting line breaks as a character for the purposes of x/y/etc attributes
+ // is a liberal interpretation of the svg spec, but a strict reading would mean
+ // that if the first line is empty the second line would take its place at the
+ // start position. Very confusing.
+ child_attrs_offset--;
+ }
+
+ for (SPObject *child = sp_object_first_child(root) ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ if (SP_IS_STRING(child)) {
+ Glib::ustring const &string = SP_STRING(child)->string;
+ layout.appendText(string, root->style, child, &optional_attrs, child_attrs_offset + length);
+ length += string.length();
+ } else {
+ length += _buildLayoutInput(child, optional_attrs, child_attrs_offset + length, in_textpath);
+ }
+ }
+
+ return length;
+}
+
+void SPText::rebuildLayout()
+{
+ layout.clear();
+ Inkscape::Text::Layout::OptionalTextTagAttrs optional_attrs;
+ _buildLayoutInput(this, optional_attrs, 0, false);
+ layout.calculateFlow();
+ for (SPObject *child = firstChild() ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ if (SP_IS_TEXTPATH(child)) {
+ SPTextPath const *textpath = SP_TEXTPATH(child);
+ if (textpath->originalPath != NULL) {
+ //g_print(layout.dumpAsText().c_str());
+ layout.fitToPathAlign(textpath->startOffset, *textpath->originalPath);
+ }
+ }
+ }
+ //g_print(layout.dumpAsText().c_str());
+
+ // set the x,y attributes on role:line spans
+ for (SPObject *child = firstChild() ; child != NULL ; child = SP_OBJECT_NEXT(child) ) {
+ if (!SP_IS_TSPAN(child)) continue;
+ SPTSpan *tspan = SP_TSPAN(child);
+ if (tspan->role == SP_TSPAN_ROLE_UNSPECIFIED) continue;
+ if (!tspan->attributes.singleXYCoordinates()) continue;
+ Inkscape::Text::Layout::iterator iter = layout.sourceToIterator(tspan);
+ NR::Point anchor_point = layout.chunkAnchorPoint(iter);
+ sp_repr_set_svg_double(SP_OBJECT_REPR(tspan), "x", anchor_point[NR::X]);
+ sp_repr_set_svg_double(SP_OBJECT_REPR(tspan), "y", anchor_point[NR::Y]);
+ }
+}
+
+
+void SPText::_adjustFontsizeRecursive(SPItem *item, double ex, bool is_root)
+{
+ SPStyle *style = SP_OBJECT_STYLE (item);
+
+ if (style && !NR_DF_TEST_CLOSE (ex, 1.0, NR_EPSILON)) {
+ if (!style->font_size.set && is_root) {
+ style->font_size.set = 1;
+ style->font_size.type = SP_FONT_SIZE_LENGTH;
+ }
+ style->font_size.computed *= ex;
+ style->letter_spacing.computed *= ex;
+ style->word_spacing.computed *= ex;
+ item->updateRepr();
+ }
+
+ for (SPObject *o = item->children; o != NULL; o = o->next) {
+ if (SP_IS_ITEM(o))
+ _adjustFontsizeRecursive(SP_ITEM(o), ex, false);
+ }
+}
+
+void SPText::_adjustCoordsRecursive(SPItem *item, NR::Matrix const &m, double ex, bool is_root)
+{
+ if (SP_IS_TSPAN(item))
+ SP_TSPAN(item)->attributes.transform(m, ex, ex, is_root);
+ // it doesn't matter if we change the x,y for role=line spans because we'll just overwrite them anyway
+ else if (SP_IS_TEXT(item))
+ SP_TEXT(item)->attributes.transform(m, ex, ex, is_root);
+ else if (SP_IS_TEXTPATH(item))
+ SP_TEXTPATH(item)->attributes.transform(m, ex, ex, is_root);
+
+ for (SPObject *o = item->children; o != NULL; o = o->next) {
+ if (SP_IS_ITEM(o))
+ _adjustCoordsRecursive(SP_ITEM(o), m, ex, false);
+ }
+}
+
+
+void SPText::_clearFlow(NRArenaGroup *in_arena)
+{
+ nr_arena_item_request_render (in_arena);
+ for (NRArenaItem *child = in_arena->children; child != NULL; ) {
+ NRArenaItem *nchild = child->next;
+
+ nr_arena_glyphs_group_clear(NR_ARENA_GLYPHS_GROUP(child));
+ nr_arena_item_remove_child (in_arena, child);
+
+ child=nchild;
+ }
+}
+
+
+/*
+ * TextTagAttributes implementation
+ */
+
+void TextTagAttributes::readFrom(Inkscape::XML::Node const *node)
+{
+ readSingleAttribute(SP_ATTR_X, node->attribute("x"));
+ readSingleAttribute(SP_ATTR_Y, node->attribute("y"));
+ readSingleAttribute(SP_ATTR_DX, node->attribute("dx"));
+ readSingleAttribute(SP_ATTR_DY, node->attribute("dy"));
+ readSingleAttribute(SP_ATTR_ROTATE, node->attribute("rotate"));
+}
+
+bool TextTagAttributes::readSingleAttribute(unsigned key, gchar const *value)
+{
+ std::vector<SVGLength> *attr_vector;
+ switch (key) {
+ case SP_ATTR_X: attr_vector = &attributes.x; break;
+ case SP_ATTR_Y: attr_vector = &attributes.y; break;
+ case SP_ATTR_DX: attr_vector = &attributes.dx; break;
+ case SP_ATTR_DY: attr_vector = &attributes.dy; break;
+ case SP_ATTR_ROTATE: attr_vector = &attributes.rotate; break;
+ default: return false;
+ }
+
+ // FIXME: sp_svg_length_list_read() amalgamates repeated separators. This prevents unset values.
+ *attr_vector = sp_svg_length_list_read(value);
+ return true;
+}
+
+void TextTagAttributes::writeTo(Inkscape::XML::Node *node) const
+{
+ writeSingleAttribute(node, "x", attributes.x);
+ writeSingleAttribute(node, "y", attributes.y);
+ writeSingleAttribute(node, "dx", attributes.dx);
+ writeSingleAttribute(node, "dy", attributes.dy);
+ writeSingleAttribute(node, "rotate", attributes.rotate);
+}
+
+void TextTagAttributes::writeSingleAttribute(Inkscape::XML::Node *node, gchar const *key, std::vector<SVGLength> const &attr_vector)
+{
+ if (attr_vector.empty())
+ node->setAttribute(key, NULL);
+ else {
+ Glib::ustring string;
+ gchar single_value_string[32];
+
+ // FIXME: this has no concept of unset values because sp_svg_length_list_read() can't read them back in
+ for (std::vector<SVGLength>::const_iterator it = attr_vector.begin() ; it != attr_vector.end() ; it++) {
+ g_ascii_formatd(single_value_string, sizeof (single_value_string), "%.8g", it->computed);
+ if (!string.empty()) string += ' ';
+ string += single_value_string;
+ }
+ node->setAttribute(key, string.c_str());
+ }
+}
+
+bool TextTagAttributes::singleXYCoordinates() const
+{
+ return attributes.x.size() <= 1 && attributes.y.size() <= 1;
+}
+
+bool TextTagAttributes::anyAttributesSet() const
+{
+ return !attributes.x.empty() || !attributes.y.empty() || !attributes.dx.empty() || !attributes.dy.empty() || !attributes.rotate.empty();
+}
+
+NR::Point TextTagAttributes::firstXY() const
+{
+ NR::Point point;
+ if (attributes.x.empty()) point[NR::X] = 0.0;
+ else point[NR::X] = attributes.x[0].computed;
+ if (attributes.y.empty()) point[NR::Y] = 0.0;
+ else point[NR::Y] = attributes.y[0].computed;
+ return point;
+}
+
+void TextTagAttributes::mergeInto(Inkscape::Text::Layout::OptionalTextTagAttrs *output, Inkscape::Text::Layout::OptionalTextTagAttrs const &parent_attrs, unsigned parent_attrs_offset, bool copy_xy, bool copy_dxdyrotate) const
+{
+ mergeSingleAttribute(&output->x, parent_attrs.x, parent_attrs_offset, copy_xy ? &attributes.x : NULL);
+ mergeSingleAttribute(&output->y, parent_attrs.y, parent_attrs_offset, copy_xy ? &attributes.y : NULL);
+ mergeSingleAttribute(&output->dx, parent_attrs.dx, parent_attrs_offset, copy_dxdyrotate ? &attributes.dx : NULL);
+ mergeSingleAttribute(&output->dy, parent_attrs.dy, parent_attrs_offset, copy_dxdyrotate ? &attributes.dy : NULL);
+ mergeSingleAttribute(&output->rotate, parent_attrs.rotate, parent_attrs_offset, copy_dxdyrotate ? &attributes.rotate : NULL);
+}
+
+void TextTagAttributes::mergeSingleAttribute(std::vector<SVGLength> *output_list, std::vector<SVGLength> const &parent_list, unsigned parent_offset, std::vector<SVGLength> const *overlay_list)
+{
+ if (overlay_list == NULL) {
+ output_list->resize(std::max(0, (int)parent_list.size() - (int)parent_offset));
+ std::copy(parent_list.begin() + parent_offset, parent_list.end(), output_list->begin());
+ } else {
+ output_list->clear();
+ output_list->reserve(std::max((int)parent_list.size() - (int)parent_offset, (int)overlay_list->size()));
+ unsigned overlay_offset = 0;
+ while (parent_offset < parent_list.size() || overlay_offset < overlay_list->size()) {
+ SVGLength const *this_item;
+ if (overlay_offset < overlay_list->size()) {
+ this_item = &(*overlay_list)[overlay_offset];
+ overlay_offset++;
+ parent_offset++;
+ } else {
+ this_item = &parent_list[parent_offset];
+ parent_offset++;
+ }
+ output_list->push_back(*this_item);
+ }
+ }
+}
+
+void TextTagAttributes::erase(unsigned start_index, unsigned n)
+{
+ if (n == 0) return;
+ if (!singleXYCoordinates()) {
+ eraseSingleAttribute(&attributes.x, start_index, n);
+ eraseSingleAttribute(&attributes.y, start_index, n);
+ }
+ eraseSingleAttribute(&attributes.dx, start_index, n);
+ eraseSingleAttribute(&attributes.dy, start_index, n);
+ eraseSingleAttribute(&attributes.rotate, start_index, n);
+}
+
+void TextTagAttributes::eraseSingleAttribute(std::vector<SVGLength> *attr_vector, unsigned start_index, unsigned n)
+{
+ if (attr_vector->size() <= start_index) return;
+ if (attr_vector->size() <= start_index + n)
+ attr_vector->erase(attr_vector->begin() + start_index, attr_vector->end());
+ else
+ attr_vector->erase(attr_vector->begin() + start_index, attr_vector->begin() + start_index + n);
+}
+
+void TextTagAttributes::insert(unsigned start_index, unsigned n)
+{
+ if (n == 0) return;
+ if (!singleXYCoordinates()) {
+ insertSingleAttribute(&attributes.x, start_index, n, true);
+ insertSingleAttribute(&attributes.y, start_index, n, true);
+ }
+ insertSingleAttribute(&attributes.dx, start_index, n, false);
+ insertSingleAttribute(&attributes.dy, start_index, n, false);
+ insertSingleAttribute(&attributes.rotate, start_index, n, false);
+}
+
+void TextTagAttributes::insertSingleAttribute(std::vector<SVGLength> *attr_vector, unsigned start_index, unsigned n, bool is_xy)
+{
+ if (attr_vector->size() <= start_index) return;
+ SVGLength zero_length;
+ zero_length = 0.0;
+ attr_vector->insert(attr_vector->begin() + start_index, n, zero_length);
+ if (is_xy) {
+ double begin = start_index == 0 ? (*attr_vector)[start_index + n].computed : (*attr_vector)[start_index - 1].computed;
+ double diff = ((*attr_vector)[start_index + n].computed - begin) / n; // n tested for nonzero in insert()
+ for (unsigned i = 0 ; i < n ; i++)
+ (*attr_vector)[start_index + i] = begin + diff * i;
+ }
+}
+
+void TextTagAttributes::split(unsigned index, TextTagAttributes *second)
+{
+ if (!singleXYCoordinates()) {
+ splitSingleAttribute(&attributes.x, index, &second->attributes.x, false);
+ splitSingleAttribute(&attributes.y, index, &second->attributes.y, false);
+ }
+ splitSingleAttribute(&attributes.dx, index, &second->attributes.dx, true);
+ splitSingleAttribute(&attributes.dy, index, &second->attributes.dy, true);
+ splitSingleAttribute(&attributes.rotate, index, &second->attributes.rotate, true);
+}
+
+void TextTagAttributes::splitSingleAttribute(std::vector<SVGLength> *first_vector, unsigned index, std::vector<SVGLength> *second_vector, bool trimZeros)
+{
+ second_vector->clear();
+ if (first_vector->size() <= index) return;
+ second_vector->resize(first_vector->size() - index);
+ std::copy(first_vector->begin() + index, first_vector->end(), second_vector->begin());
+ first_vector->resize(index);
+ if (trimZeros)
+ while (!first_vector->empty() && (!first_vector->back()._set || first_vector->back().value == 0.0))
+ first_vector->resize(first_vector->size() - 1);
+}
+
+void TextTagAttributes::join(TextTagAttributes const &first, TextTagAttributes const &second, unsigned second_index)
+{
+ if (second.singleXYCoordinates()) {
+ attributes.x = first.attributes.x;
+ attributes.y = first.attributes.y;
+ } else {
+ joinSingleAttribute(&attributes.x, first.attributes.x, second.attributes.x, second_index);
+ joinSingleAttribute(&attributes.y, first.attributes.y, second.attributes.y, second_index);
+ }
+ joinSingleAttribute(&attributes.dx, first.attributes.dx, second.attributes.dx, second_index);
+ joinSingleAttribute(&attributes.dy, first.attributes.dy, second.attributes.dy, second_index);
+ joinSingleAttribute(&attributes.rotate, first.attributes.rotate, second.attributes.rotate, second_index);
+}
+
+void TextTagAttributes::joinSingleAttribute(std::vector<SVGLength> *dest_vector, std::vector<SVGLength> const &first_vector, std::vector<SVGLength> const &second_vector, unsigned second_index)
+{
+ if (second_vector.empty())
+ *dest_vector = first_vector;
+ else {
+ dest_vector->resize(second_index + second_vector.size());
+ if (first_vector.size() < second_index) {
+ std::copy(first_vector.begin(), first_vector.end(), dest_vector->begin());
+ SVGLength zero_length;
+ zero_length = 0.0;
+ std::fill(dest_vector->begin() + first_vector.size(), dest_vector->begin() + second_index, zero_length);
+ } else
+ std::copy(first_vector.begin(), first_vector.begin() + second_index, dest_vector->begin());
+ std::copy(second_vector.begin(), second_vector.end(), dest_vector->begin() + second_index);
+ }
+}
+
+void TextTagAttributes::transform(NR::Matrix const &matrix, double scale_x, double scale_y, bool extend_zero_length)
+{
+ SVGLength zero_length;
+ zero_length = 0.0;
+
+ /* edge testcases for this code:
+ 1) moving text elements whose position is done entirely with transform="...", no x,y attributes
+ 2) unflowing multi-line flowtext then moving it (it has x but not y)
+ */
+ unsigned points_count = std::max(attributes.x.size(), attributes.y.size());
+ if (extend_zero_length && points_count < 1)
+ points_count = 1;
+ for (unsigned i = 0 ; i < points_count ; i++) {
+ NR::Point point;
+ if (i < attributes.x.size()) point[NR::X] = attributes.x[i].computed;
+ else point[NR::X] = 0.0;
+ if (i < attributes.y.size()) point[NR::Y] = attributes.y[i].computed;
+ else point[NR::Y] = 0.0;
+ point *= matrix;
+ if (i < attributes.x.size())
+ attributes.x[i] = point[NR::X];
+ else if (point[NR::X] != 0.0 && extend_zero_length) {
+ attributes.x.resize(i + 1, zero_length);
+ attributes.x[i] = point[NR::X];
+ }
+ if (i < attributes.y.size())
+ attributes.y[i] = point[NR::Y];
+ else if (point[NR::Y] != 0.0 && extend_zero_length) {
+ attributes.y.resize(i + 1, zero_length);
+ attributes.y[i] = point[NR::Y];
+ }
+ }
+ for (std::vector<SVGLength>::iterator it = attributes.dx.begin() ; it != attributes.dx.end() ; it++)
+ *it = it->computed * scale_x;
+ for (std::vector<SVGLength>::iterator it = attributes.dy.begin() ; it != attributes.dy.end() ; it++)
+ *it = it->computed * scale_y;
+}
+
+void TextTagAttributes::addToDxDy(unsigned index, NR::Point const &adjust)
+{
+ SVGLength zero_length;
+ zero_length = 0.0;
+
+ if (adjust[NR::X] != 0.0) {
+ if (attributes.dx.size() < index + 1) attributes.dx.resize(index + 1, zero_length);
+ attributes.dx[index] = attributes.dx[index].computed + adjust[NR::X];
+ }
+ if (adjust[NR::Y] != 0.0) {
+ if (attributes.dy.size() < index + 1) attributes.dy.resize(index + 1, zero_length);
+ attributes.dy[index] = attributes.dy[index].computed + adjust[NR::Y];
+ }
+}
+
+void TextTagAttributes::addToRotate(unsigned index, double delta)
+{
+ SVGLength zero_length;
+ zero_length = 0.0;
+
+ if (attributes.rotate.size() < index + 1) {
+ if (attributes.rotate.empty())
+ attributes.rotate.resize(index + 1, zero_length);
+ else
+ attributes.rotate.resize(index + 1, attributes.rotate.back());
+ }
+ attributes.rotate[index] = mod360(attributes.rotate[index].computed + delta);
+}
+
+
+/*
+ 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 :
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-19 04:24:08 +0000