added some more boilerplate code on feTurbulence.

[inkscape.git] / src / display / nr-filter-image.cpp

diff --git a/src/display/nr-filter-image.cpp b/src/display/nr-filter-image.cpp
index 62a8caf20dbd11c66e4bed103ab1757f6bfad208..8e89cdc81adf5fa77a10dac56f5cde1834b90340 100644 (file)
--- a/src/display/nr-filter-image.cpp
+++ b/src/display/nr-filter-image.cpp
@@ -8,21 +8,20 @@
  *
  * Released under GNU GPL, read the file 'COPYING' for more information
  */
-
+#include "display/nr-arena-item.h"
+#include "display/nr-filter.h"
 #include "display/nr-filter-image.h"
-// #include <string.h>
-// #include <gtkmm.h>
 
 namespace NR {
 
 FilterImage::FilterImage()
 {
-/* Testing with hardcoded xlink:href :  
-    image = Gdk::Pixbuf::create_from_file("/home/felipe/images/image1.jpg");
+// Testing with hardcoded xlink:href :  
+    image = Gdk::Pixbuf::create_from_file("../images/image1.jpg");
     //TODO: handle errors
     width = image->get_width()+1;
     height = image->get_height()+1;
-    image_pixbuf = image->get_pixels();*/
+    image_pixbuf = image->get_pixels();
 }
 
 FilterPrimitive * FilterImage::create() {
@@ -33,45 +32,48 @@ FilterImage::~FilterImage()
 {}
 
 int FilterImage::render(FilterSlot &slot, Matrix const &trans) {
-/* TODO: Implement this renderer method.
-Specification: http://www.w3.org/TR/SVG11/filters.html#feImage
-
- It would be good to findout how to reuse sp-image.cpp code
- 
-After implementing it, add a reference to FilterImage::create
- on Filter::_create_constructor_table() (nr-filter.cpp file)
-*/
- 
-/*    int w,x,y;
+    int w,x,y;
     NRPixBlock *in = slot.get(_input);
     NRPixBlock *out = new NRPixBlock;
 
     int x0 = in->area.x0, y0 = in->area.y0;
     int x1 = in->area.x1, y1 = in->area.y1;
-    if (x0<0) x0 = 0;
-    if (x1>width-1) x1 = width-1;
-
-    if (y0<0) y0 = 0;
-    if (y1>height-1) y1 = height-1;
+    int bbox_x0 = (int) slot.get_arenaitem()->bbox.x0;
+    int bbox_y0 = (int) slot.get_arenaitem()->bbox.y0;
     
     nr_pixblock_setup_fast(out, in->mode, x0, y0, x1, y1, true);
 
     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++){
-            out_data[4*((x - x0)+w*(y - y0))] = (unsigned char) image_pixbuf[3*(x+width*y)]; //Red
-            out_data[4*((x - x0)+w*(y - y0)) + 1] = (unsigned char) image_pixbuf[3*(x+width*y) + 1]; //Green
-            out_data[4*((x - x0)+w*(y - y0)) + 2] = (unsigned char) image_pixbuf[3*(x+width*y) + 2]; //Blue
-            out_data[4*((x - x0)+w*(y - y0)) + 3] = 255; //Alpha
+            //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 + width*coordy)]; //Red
+                out_data[4*((x - x0)+w*(y - y0)) + 1] = (unsigned char) image_pixbuf[3*(coordx + width*coordy) + 1]; //Green
+                out_data[4*((x - x0)+w*(y - y0)) + 2] = (unsigned char) image_pixbuf[3*(coordx + width*coordy) + 2]; //Blue
+                out_data[4*((x - x0)+w*(y - y0)) + 3] = 255; //Alpha
+            }
         }
     }
 
     out->empty = FALSE;
     slot.set(_output, out);
-    return 0;*/
+    return 0;
 }
-
+void FilterImage::set_region(SVGLength x, SVGLength y, SVGLength width, SVGLength height){
+        feImageX=x.computed;
+        feImageY=y.computed;
+        feImageWidth=width.computed;
+        feImageHeight=height.computed;
+}
+    
 } /* namespace NR */
 
 /*