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Diffstat (limited to 'src/display/nr-arena-image.cpp')
| -rw-r--r-- | src/display/nr-arena-image.cpp | 408 |
1 files changed, 0 insertions, 408 deletions
diff --git a/src/display/nr-arena-image.cpp b/src/display/nr-arena-image.cpp deleted file mode 100644 index a943a6214..000000000 --- a/src/display/nr-arena-image.cpp +++ /dev/null @@ -1,408 +0,0 @@ -#define __NR_ARENA_IMAGE_C__ - -/* - * RGBA display list system for inkscape - * - * Author: - * Lauris Kaplinski <lauris@kaplinski.com> - * - * Copyright (C) 2001-2002 Lauris Kaplinski - * Copyright (C) 2001 Ximian, Inc. - * - * Released under GNU GPL, read the file 'COPYING' for more information - */ - -#include <2geom/transforms.h> -#include "../preferences.h" -#include "nr-arena-image.h" -#include "style.h" -#include "display/cairo-utils.h" -#include "display/nr-arena.h" -#include "display/nr-filter.h" -#include "sp-filter.h" -#include "sp-filter-reference.h" - -int nr_arena_image_x_sample = 1; -int nr_arena_image_y_sample = 1; - -/* - * NRArenaCanvasImage - * - */ - -static void nr_arena_image_class_init (NRArenaImageClass *klass); -static void nr_arena_image_init (NRArenaImage *image); -static void nr_arena_image_finalize (NRObject *object); - -static unsigned int nr_arena_image_update (NRArenaItem *item, NRRectL *area, NRGC *gc, unsigned int state, unsigned int reset); -static unsigned int nr_arena_image_render (cairo_t *ct, NRArenaItem *item, NRRectL *area, NRPixBlock *pb, unsigned int flags); -static NRArenaItem *nr_arena_image_pick (NRArenaItem *item, Geom::Point p, double delta, unsigned int sticky); -static Geom::Rect nr_arena_image_rect (NRArenaImage *image); - -static NRArenaItemClass *parent_class; - -NRType -nr_arena_image_get_type (void) -{ - static NRType type = 0; - if (!type) { - type = nr_object_register_type (NR_TYPE_ARENA_ITEM, - "NRArenaImage", - sizeof (NRArenaImageClass), - sizeof (NRArenaImage), - (void (*) (NRObjectClass *)) nr_arena_image_class_init, - (void (*) (NRObject *)) nr_arena_image_init); - } - return type; -} - -static void -nr_arena_image_class_init (NRArenaImageClass *klass) -{ - NRObjectClass *object_class; - NRArenaItemClass *item_class; - - object_class = (NRObjectClass *) klass; - item_class = (NRArenaItemClass *) klass; - - parent_class = (NRArenaItemClass *) ((NRObjectClass *) klass)->parent; - - object_class->finalize = nr_arena_image_finalize; - object_class->cpp_ctor = NRObject::invoke_ctor<NRArenaImage>; - - item_class->update = nr_arena_image_update; - item_class->render = nr_arena_image_render; - item_class->pick = nr_arena_image_pick; -} - -static void -nr_arena_image_init (NRArenaImage *image) -{ - image->pixbuf = NULL; - image->ctm.setIdentity(); - image->clipbox = Geom::Rect(); - image->ox = image->oy = 0.0; - image->sx = image->sy = 1.0; - - image->style = 0; - image->render_opacity = TRUE; -} - -static void -nr_arena_image_finalize (NRObject *object) -{ - NRArenaImage *image = NR_ARENA_IMAGE (object); - - if (image->pixbuf != NULL) { - g_object_unref(image->pixbuf); - cairo_surface_destroy(image->surface); - } - if (image->style) - sp_style_unref(image->style); - - ((NRObjectClass *) parent_class)->finalize (object); -} - -static unsigned int -nr_arena_image_update( NRArenaItem *item, NRRectL */*area*/, NRGC *gc, unsigned int /*state*/, unsigned int /*reset*/ ) -{ - // clear old bbox - nr_arena_item_request_render(item); - - NRArenaImage *image = NR_ARENA_IMAGE (item); - - /* Copy affine */ - image->ctm = gc->transform; - - /* Calculate bbox */ - if (image->pixbuf) { - NRRect bbox; - - Geom::Rect r = nr_arena_image_rect(image) * gc->transform; - - item->bbox.x0 = floor(r.left()); // Floor gives the coordinate in which the point resides - item->bbox.y0 = floor(r.top()); - item->bbox.x1 = ceil(r.right()); // Ceil gives the first coordinate beyond the point - item->bbox.y1 = ceil(r.bottom()); - } else { - item->bbox.x0 = (int) gc->transform[4]; - item->bbox.y0 = (int) gc->transform[5]; - item->bbox.x1 = item->bbox.x0 - 1; - item->bbox.y1 = item->bbox.y0 - 1; - } - - return NR_ARENA_ITEM_STATE_ALL; -} - -static unsigned int nr_arena_image_render( cairo_t *ct, NRArenaItem *item, NRRectL * /*area*/, NRPixBlock * /*pb*/, unsigned int /*flags*/ ) -{ - if (!ct) { - return item->state; - } - - bool outline = (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE); - - NRArenaImage *image = NR_ARENA_IMAGE (item); - - if (!outline) { - if (!image->pixbuf) { - return item->state; - } - - // FIXME: at the moment gdk_cairo_set_source_pixbuf creates an ARGB copy - // of the pixbuf. Fix this in Cairo and/or GDK. - cairo_save(ct); - ink_cairo_transform(ct, image->ctm); - - cairo_new_path(ct); - cairo_rectangle(ct, image->clipbox.left(), image->clipbox.top(), - image->clipbox.width(), image->clipbox.height()); - cairo_clip(ct); - - cairo_translate(ct, image->ox, image->oy); - cairo_scale(ct, image->sx, image->sy); - - cairo_set_source_surface(ct, image->surface, 0, 0); - - cairo_matrix_t tt; - Geom::Affine total; - cairo_get_matrix(ct, &tt); - ink_matrix_to_2geom(total, tt); - - if (total.expansionX() > 1.0 || total.expansionY() > 1.0) { - cairo_pattern_t *p = cairo_get_source(ct); - cairo_pattern_set_filter(p, CAIRO_FILTER_NEAREST); - } - - cairo_paint_with_alpha(ct, ((double) item->opacity) / 255.0); - cairo_restore(ct); - - } else { // outline; draw a rect instead - Inkscape::Preferences *prefs = Inkscape::Preferences::get(); - guint32 rgba = prefs->getInt("/options/wireframecolors/images", 0xff0000ff); - - cairo_save(ct); - ink_cairo_transform(ct, image->ctm); - - cairo_new_path(ct); - - Geom::Rect r = nr_arena_image_rect (image); - Geom::Point c00 = r.corner(0); - Geom::Point c01 = r.corner(3); - Geom::Point c11 = r.corner(2); - Geom::Point c10 = r.corner(1); - - cairo_move_to (ct, c00[Geom::X], c00[Geom::Y]); - // the box - cairo_line_to (ct, c10[Geom::X], c10[Geom::Y]); - cairo_line_to (ct, c11[Geom::X], c11[Geom::Y]); - cairo_line_to (ct, c01[Geom::X], c01[Geom::Y]); - cairo_line_to (ct, c00[Geom::X], c00[Geom::Y]); - // the diagonals - cairo_line_to (ct, c11[Geom::X], c11[Geom::Y]); - cairo_move_to (ct, c10[Geom::X], c10[Geom::Y]); - cairo_line_to (ct, c01[Geom::X], c01[Geom::Y]); - cairo_restore(ct); - - cairo_set_line_width(ct, 0.5); - ink_cairo_set_source_rgba32(ct, rgba); - cairo_stroke(ct); - } - return item->state; -} - -/** Calculates the closest distance from p to the segment a1-a2*/ -double -distance_to_segment (Geom::Point p, Geom::Point a1, Geom::Point a2) -{ - // calculate sides of the triangle and their squares - double d1 = Geom::L2(p - a1); - double d1_2 = d1 * d1; - double d2 = Geom::L2(p - a2); - double d2_2 = d2 * d2; - double a = Geom::L2(a1 - a2); - double a_2 = a * a; - - // if one of the angles at the base is > 90, return the corresponding side - if (d1_2 + a_2 <= d2_2) return d1; - if (d2_2 + a_2 <= d1_2) return d2; - - // otherwise calculate the height to the base - double peri = (a + d1 + d2)/2; - return (2*sqrt(peri * (peri - a) * (peri - d1) * (peri - d2))/a); -} - -static NRArenaItem * -nr_arena_image_pick( NRArenaItem *item, Geom::Point p, double delta, unsigned int /*sticky*/ ) -{ - NRArenaImage *image = NR_ARENA_IMAGE (item); - - if (!image->pixbuf) return NULL; - - bool outline = (item->arena->rendermode == Inkscape::RENDERMODE_OUTLINE); - - if (outline) { - Geom::Rect r = nr_arena_image_rect (image); - - Geom::Point c00 = r.corner(0); - Geom::Point c01 = r.corner(3); - Geom::Point c11 = r.corner(2); - Geom::Point c10 = r.corner(1); - - // frame - if (distance_to_segment (p, c00, c10) < delta) return item; - if (distance_to_segment (p, c10, c11) < delta) return item; - if (distance_to_segment (p, c11, c01) < delta) return item; - if (distance_to_segment (p, c01, c00) < delta) return item; - - // diagonals - if (distance_to_segment (p, c00, c11) < delta) return item; - if (distance_to_segment (p, c10, c01) < delta) return item; - - return NULL; - - } else { - - unsigned char *const pixels = gdk_pixbuf_get_pixels(image->pixbuf); - int const width = gdk_pixbuf_get_width(image->pixbuf); - int const height = gdk_pixbuf_get_height(image->pixbuf); - int const rowstride = gdk_pixbuf_get_rowstride(image->pixbuf); - - Geom::Point tp = p * image->ctm.inverse(); - Geom::Rect r = nr_arena_image_rect(image); - - if (!r.contains(tp)) - return NULL; - - double vw = width * image->sx; - double vh = height * image->sy; - int ix = floor((tp[Geom::X] - image->ox) / vw * width); - int iy = floor((tp[Geom::Y] - image->oy) / vh * height); - - if ((ix < 0) || (iy < 0) || (ix >= width) || (iy >= height)) - return NULL; - - unsigned char *pix_ptr = pixels + iy * rowstride + ix * 4; - // is the alpha not transparent? - return (pix_ptr[3] > 0) ? item : NULL; - } -} - -Geom::Rect -nr_arena_image_rect (NRArenaImage *image) -{ - Geom::Rect r = image->clipbox; - - if (image->pixbuf) { - double pw = gdk_pixbuf_get_width(image->pixbuf); - double ph = gdk_pixbuf_get_height(image->pixbuf); - double vw = pw * image->sx; - double vh = ph * image->sy; - Geom::Point p(image->ox, image->oy); - Geom::Point wh(vw, vh); - Geom::Rect view(p, p+wh); - Geom::OptRect res = r & view; - r = res ? *res : r; - } - - return r; -} - -/* Utility */ - -void -nr_arena_image_set_argb32_pixbuf (NRArenaImage *image, GdkPixbuf *pb) -{ - nr_return_if_fail (image != NULL); - nr_return_if_fail (NR_IS_ARENA_IMAGE (image)); - - // when done in this order, it won't break if pb == image->pixbuf and the refcount is 1 - if (pb != NULL) { - g_object_ref (pb); - } - if (image->pixbuf != NULL) { - g_object_unref(image->pixbuf); - cairo_surface_destroy(image->surface); - } - image->pixbuf = pb; - image->surface = pb ? ink_cairo_surface_create_for_argb32_pixbuf(pb) : NULL; - - nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE); -} - -void -nr_arena_image_set_clipbox (NRArenaImage *image, Geom::Rect const &clip) -{ - nr_return_if_fail (image != NULL); - nr_return_if_fail (NR_IS_ARENA_IMAGE (image)); - - image->clipbox = clip; - - nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE); -} - -void -nr_arena_image_set_origin (NRArenaImage *image, Geom::Point const &origin) -{ - nr_return_if_fail (image != NULL); - nr_return_if_fail (NR_IS_ARENA_IMAGE (image)); - - image->ox = origin[Geom::X]; - image->oy = origin[Geom::Y]; - - nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE); -} - -void -nr_arena_image_set_scale (NRArenaImage *image, double sx, double sy) -{ - nr_return_if_fail (image != NULL); - nr_return_if_fail (NR_IS_ARENA_IMAGE (image)); - - image->sx = sx; - image->sy = sy; - - nr_arena_item_request_update (NR_ARENA_ITEM (image), NR_ARENA_ITEM_STATE_ALL, FALSE); -} - -void nr_arena_image_set_style (NRArenaImage *image, SPStyle *style) -{ - g_return_if_fail(image != NULL); - g_return_if_fail(NR_IS_ARENA_IMAGE(image)); - - if (style) sp_style_ref(style); - if (image->style) sp_style_unref(image->style); - image->style = style; - - //if image has a filter - if (style->filter.set && style->getFilter()) { - if (!image->filter) { - int primitives = sp_filter_primitive_count(SP_FILTER(style->getFilter())); - image->filter = new Inkscape::Filters::Filter(primitives); - } - sp_filter_build_renderer(SP_FILTER(style->getFilter()), image->filter); - } else { - //no filter set for this image - delete image->filter; - image->filter = NULL; - } - - if (style && style->enable_background.set - && style->enable_background.value == SP_CSS_BACKGROUND_NEW) { - image->background_new = true; - } - - nr_arena_item_request_update(image, NR_ARENA_ITEM_STATE_ALL, FALSE); -} - - -/* - 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:fileencoding=utf-8:textwidth=99 : |