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index 312e854045e17ec5e0a42aebcc5a3faf84ccc2bf..9a39168c29368743cf1b5cbf38de554812bf6efc 100644 (file)
* feImage filter primitive renderer
*
* Authors:
- * Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
+ * Felipe Corrêa da Silva Sanches <juca@members.fsf.org>
+ * Tavmjong Bah <tavmjong@free.fr>
+ * Abhishek Sharma
*
* Copyright (C) 2007 authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
+#include "document.h"
+#include "sp-item.h"
+#include "display/nr-arena.h"
#include "display/nr-arena-item.h"
#include "display/nr-filter.h"
#include "display/nr-filter-image.h"
#include "display/nr-filter-units.h"
+#include "libnr/nr-compose-transform.h"
+#include "libnr/nr-rect-l.h"
+#include "preferences.h"
-namespace NR {
+namespace Inkscape {
+namespace Filters {
-FilterImage::FilterImage()
-{
- feImageHref=NULL;
- image_pixbuf=NULL;
-}
+FilterImage::FilterImage() :
+ SVGElem(0),
+ document(0),
+ feImageHref(0),
+ image_pixbuf(0)
+{ }
FilterPrimitive * FilterImage::create() {
return new FilterImage();
FilterImage::~FilterImage()
{
if (feImageHref) g_free(feImageHref);
- if (image_pixbuf) g_free(image_pixbuf);
}
-int FilterImage::render(FilterSlot &slot, FilterUnits const &/*units*/) {
- if (!feImageHref) return 0;
+int FilterImage::render(FilterSlot &slot, FilterUnits const &units) {
+ if (!feImageHref) return 0;
+
+ NRPixBlock* pb = NULL;
+ bool free_pb_on_exit = false;
+
+ if(from_element){
+ if (!SVGElem) return 0;
+
+ // prep the document
+ document->ensureUpToDate();
+ NRArena* arena = NRArena::create();
+ unsigned const key = SPItem::display_key_new(1);
+ NRArenaItem* ai = SVGElem->invoke_show(arena, key, SP_ITEM_SHOW_DISPLAY);
+ if (!ai) {
+ g_warning("feImage renderer: error creating NRArenaItem for SVG Element");
+ nr_object_unref((NRObject *) arena);
+ return 0;
+ }
+
+ pb = new NRPixBlock;
+ free_pb_on_exit = true;
+
+ Geom::OptRect area = SVGElem->getBounds(Geom::identity());
+
+ NRRectL rect;
+ rect.x0=area->min()[Geom::X];
+ rect.x1=area->max()[Geom::X];
+ rect.y0=area->min()[Geom::Y];
+ rect.y1=area->max()[Geom::Y];
+
+ width = (int)(rect.x1-rect.x0);
+ height = (int)(rect.y1-rect.y0);
+ rowstride = 4*width;
+ has_alpha = true;
+
+ if (image_pixbuf) g_free(image_pixbuf);
+ image_pixbuf = g_try_new(unsigned char, 4L * width * height);
+ if(image_pixbuf != NULL)
+ {
+ memset(image_pixbuf, 0x00, 4 * width * height);
+
+ NRGC gc(NULL);
+ /* Update to renderable state */
+ double sf = 1.0;
+ Geom::Matrix t(Geom::Scale(sf, sf));
+ nr_arena_item_set_transform(ai, &t);
+ gc.transform.setIdentity();
+ nr_arena_item_invoke_update( ai, NULL, &gc,
+ NR_ARENA_ITEM_STATE_ALL,
+ NR_ARENA_ITEM_STATE_NONE );
+ nr_pixblock_setup_extern(pb, NR_PIXBLOCK_MODE_R8G8B8A8N,
+ (int)rect.x0, (int)rect.y0, (int)rect.x1, (int)rect.y1,
+ image_pixbuf, 4 * width, FALSE, FALSE );
+
+ nr_arena_item_invoke_render(NULL, ai, &rect, pb, NR_ARENA_ITEM_RENDER_NO_CACHE);
+ }
+ else
+ {
+ g_warning("FilterImage::render: not enough memory to create pixel buffer. Need %ld.", 4L * width * height);
+ }
+ SVGElem->invoke_hide(key);
+ nr_object_unref((NRObject *) arena);
+ }
+
if (!image_pixbuf){
- if ( (image = Gdk::Pixbuf::create_from_file(feImageHref)) < 0 ) return 0;
- width = image->get_width();
- height = image->get_height();
- rowstride = image->get_rowstride();
- image_pixbuf = image->get_pixels();
+ try {
+ /* TODO: If feImageHref is absolute, then use that (preferably handling the
+ * case that it's not a file URI). Otherwise, go up the tree looking
+ * for an xml:base attribute, and use that as the base URI for resolving
+ * the relative feImageHref URI. Otherwise, if document && document->base,
+ * then use that as the base URI. Otherwise, use feImageHref directly
+ * (i.e. interpreting it as relative to our current working directory).
+ * (See http://www.w3.org/TR/xmlbase/#resolution .) */
+ gchar *fullname = feImageHref;
+ if ( !g_file_test( fullname, G_FILE_TEST_EXISTS ) ) {
+ // Try to load from relative postion combined with document base
+ if( document ) {
+ fullname = g_build_filename( document->getBase(), feImageHref, NULL );
+ }
+ }
+ if ( !g_file_test( fullname, G_FILE_TEST_EXISTS ) ) {
+ // Should display Broken Image png.
+ g_warning("FilterImage::render: Can not find: %s", feImageHref );
+ }
+ image = Gdk::Pixbuf::create_from_file(fullname);
+ if( fullname != feImageHref ) g_free( fullname );
+ }
+ catch (const Glib::FileError & e)
+ {
+ g_warning("caught Glib::FileError in FilterImage::render %i", e.code() );
+ return 0;
+ }
+ catch (const Gdk::PixbufError & e)
+ {
+ g_warning("Gdk::PixbufError in FilterImage::render: %i", e.code() );
+ return 0;
+ }
+ if ( !image ) return 0;
+
+ // Native size of image
+ width = image->get_width();
+ height = image->get_height();
+ rowstride = image->get_rowstride();
+ image_pixbuf = image->get_pixels();
+ has_alpha = image->get_has_alpha();
}
int w,x,y;
NRPixBlock *in = slot.get(_input);
- NRPixBlock *out = new NRPixBlock;
+ if (!in) {
+ g_warning("Missing source image for feImage (in=%d)", _input);
+ return 1;
+ }
+
+ // This section needs to be fully tested!!
+ // Region being drawn on screen
int x0 = in->area.x0, y0 = in->area.y0;
int x1 = in->area.x1, y1 = in->area.y1;
- int bbox_x0 = (int) slot.get_arenaitem()->bbox.x0;
- int bbox_y0 = (int) slot.get_arenaitem()->bbox.y0;
+ NRPixBlock *out = new NRPixBlock;
+ nr_pixblock_setup_fast(out, NR_PIXBLOCK_MODE_R8G8B8A8P, x0, y0, x1, y1, true);
+ w = x1 - x0;
- nr_pixblock_setup_fast(out, in->mode, x0, y0, x1, y1, true);
+ // Get the object bounding box. Image is placed with respect to box.
+ // Array values: 0: width; 3: height; 4: -x; 5: -y.
+ Geom::Matrix object_bbox = units.get_matrix_user2filterunits().inverse();
+
+ // feImage is suppose to use the same parameters as a normal SVG image.
+ // If a width or height is set to zero, the image is not suppose to be displayed.
+ // This does not seem to be what Firefox or Opera does, nor does the W3C displacement
+ // filter test expect this behavior. If the width and/or height are zero, we use
+ // the width and height of the object bounding box.
+ if( feImageWidth == 0 ) feImageWidth = object_bbox[0];
+ if( feImageHeight == 0 ) feImageHeight = object_bbox[3];
- w = x1 - x0;
double scaleX = width/feImageWidth;
double scaleY = height/feImageHeight;
+
int coordx,coordy;
unsigned char *out_data = NR_PIXBLOCK_PX(out);
- for (x=x0; x < x1; x++){
- for (y=y0; y < y1; y++){
- //TODO: use interpolation
- coordx = int((x - feImageX - bbox_x0)*scaleX);
- coordy = int((y - feImageY - bbox_y0)*scaleY);
-
- if (coordx > 0 && coordx < width && coordy > 0 && coordy < height){
- out_data[4*((x - x0)+w*(y - y0))] = (unsigned char) image_pixbuf[3*coordx + rowstride*coordy]; //Red
- out_data[4*((x - x0)+w*(y - y0)) + 1] = (unsigned char) image_pixbuf[3*coordx + rowstride*coordy + 1]; //Green
- out_data[4*((x - x0)+w*(y - y0)) + 2] = (unsigned char) image_pixbuf[3*coordx + rowstride*coordy + 2]; //Blue
- out_data[4*((x - x0)+w*(y - y0)) + 3] = 255; //Alpha
+ Geom::Matrix unit_trans = units.get_matrix_primitiveunits2pb().inverse();
+ Geom::Matrix d2s = Geom::Translate(x0, y0) * unit_trans * Geom::Translate(object_bbox[4]-feImageX, object_bbox[5]-feImageY) * Geom::Scale(scaleX, scaleY);
+
+ Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+ int nr_arena_image_x_sample = prefs->getInt("/options/bitmapoversample/value", 1);
+ int nr_arena_image_y_sample = nr_arena_image_x_sample;
+
+ if (has_alpha) {
+ nr_R8G8B8A8_P_R8G8B8A8_P_R8G8B8A8_N_TRANSFORM(out_data, x1-x0, y1-y0, 4*w, image_pixbuf, width, height, rowstride, d2s, 255, nr_arena_image_x_sample, nr_arena_image_y_sample);
+ } else {
+ for (x=x0; x < x1; x++){
+ for (y=y0; y < y1; y++){
+ //TODO: use interpolation
+ // Temporarily add 0.5 so we sample center of "cell"
+ double indexX = scaleX * (((x+0.5) * unit_trans[0] + unit_trans[4]) - feImageX + object_bbox[4]);
+ double indexY = scaleY * (((y+0.5) * unit_trans[3] + unit_trans[5]) - feImageY + object_bbox[5]);
+
+ // coordx == 0 and coordy == 0 must be included, but we protect
+ // against negative numbers which round up to 0 with (int).
+ coordx = ( indexX >= 0 ? int( indexX ) : -1 );
+ coordy = ( indexY >= 0 ? int( indexY ) : -1 );
+ if (coordx >= 0 && coordx < width && coordy >= 0 && coordy < height){
+ out_data[4*((x - x0)+w*(y - y0)) ] = (unsigned char) image_pixbuf[3*coordx + rowstride*coordy ]; //Red
+ out_data[4*((x - x0)+w*(y - y0)) + 1] = (unsigned char) image_pixbuf[3*coordx + rowstride*coordy + 1]; //Green
+ out_data[4*((x - x0)+w*(y - y0)) + 2] = (unsigned char) image_pixbuf[3*coordx + rowstride*coordy + 2]; //Blue
+ out_data[4*((x - x0)+w*(y - y0)) + 3] = 255; //Alpha
+ }
}
}
}
+ if (free_pb_on_exit) {
+ nr_pixblock_release(pb);
+ delete pb;
+ }
out->empty = FALSE;
slot.set(_output, out);
feImageHref = (href) ? g_strdup (href) : NULL;
}
+void FilterImage::set_document(SPDocument *doc){
+ document = doc;
+}
+
void FilterImage::set_region(SVGLength x, SVGLength y, SVGLength width, SVGLength height){
feImageX=x.computed;
feImageY=y.computed;
return TRAIT_PARALLER;
}
-} /* namespace NR */
+} /* namespace Filters */
+} /* namespace Inkscape */
/*
Local Variables:
fill-column:99
End:
*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :