feImage boilerplate code.

(bzr r3301)

6 files changed, 170 insertions, 1 deletions

diff --git a/src/display/Makefile_insert b/src/display/Makefile_insert
index f31236674..baeaaec62 100644
--- a/src/display/Makefile_insert
+++ b/src/display/Makefile_insert
@@ -85,6 +85,8 @@ display_libspdisplay_a_SOURCES = \
 	display/nr-filter-convolve-matrix.h	\
     display/nr-filter-displacement-map.cpp      \
     display/nr-filter-displacement-map.h        \
+    display/nr-filter-image.cpp	\
+    display/nr-filter-image.h	\
 	display/nr-filter-slot.cpp      \
 	display/nr-filter-slot.h        \
 	display/nr-filter-getalpha.cpp	\
diff --git a/src/display/nr-filter-image.cpp b/src/display/nr-filter-image.cpp
new file mode 100644
index 000000000..62a8caf20
--- /dev/null
+++ b/src/display/nr-filter-image.cpp
@@ -0,0 +1,86 @@
+/*
+ * feImage filter primitive renderer
+ *
+ * Authors:
+ *   Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#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");
+    //TODO: handle errors
+    width = image->get_width()+1;
+    height = image->get_height()+1;
+    image_pixbuf = image->get_pixels();*/
+}
+
+FilterPrimitive * FilterImage::create() {
+    return new FilterImage();
+}
+
+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;
+    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;
+    
+    nr_pixblock_setup_fast(out, in->mode, x0, y0, x1, y1, true);
+
+    w = x1 - x0;
+    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
+        }
+    }
+
+    out->empty = FALSE;
+    slot.set(_output, out);
+    return 0;*/
+}
+
+} /* namespace NR */
+
+/*
+  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 :
diff --git a/src/display/nr-filter-image.h b/src/display/nr-filter-image.h
new file mode 100644
index 000000000..cad5d4ee1
--- /dev/null
+++ b/src/display/nr-filter-image.h
@@ -0,0 +1,47 @@
+#ifndef __NR_FILTER_IMAGE_H__
+#define __NR_FILTER_IMAGE_H__
+
+/*
+ * feImage filter primitive renderer
+ *
+ * Authors:
+ *   Niko Kiirala <niko@kiirala.com>
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "display/nr-filter-primitive.h"
+#include "display/nr-filter-slot.h"
+#include <gtkmm.h>
+
+namespace NR {
+
+class FilterImage : public FilterPrimitive {
+public:
+    FilterImage();
+    static FilterPrimitive *create();
+    virtual ~FilterImage();
+
+    virtual int render(FilterSlot &slot, Matrix const &trans);
+
+private:
+    guint8* image_pixbuf;
+    Glib::RefPtr<Gdk::Pixbuf> image;
+    int width, height;
+};
+
+} /* namespace NR */
+
+#endif /* __NR_FILTER_IMAGE_H__ */
+/*
+  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 :
diff --git a/src/display/nr-filter.cpp b/src/display/nr-filter.cpp
index 2491fba35..eb6a48e6c 100644
--- a/src/display/nr-filter.cpp
+++ b/src/display/nr-filter.cpp
@@ -29,6 +29,7 @@
 #include "display/nr-filter-composite.h"
 #include "display/nr-filter-diffuselighting.h"
 #include "display/nr-filter-specularlighting.h"
+#include "display/nr-filter-image.h"
 
 #include "display/nr-arena-item.h"
 #include "libnr/nr-pixblock.h"
diff --git a/src/sp-feimage.cpp b/src/sp-feimage.cpp
index 6c0aa9e4f..810e4b5d7 100644
--- a/src/sp-feimage.cpp
+++ b/src/sp-feimage.cpp
@@ -6,8 +6,10 @@
  */
 /*
  * Authors:
+ *   Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
  *   hugo Rodrigues <haa.rodrigues@gmail.com>
  *
+ * Copyright (C) 2007 Felipe Sanches
  * Copyright (C) 2006 Hugo Rodrigues
  *
  * Released under GNU GPL, read the file 'COPYING' for more information
@@ -21,7 +23,10 @@
 #include "svg/svg.h"
 #include "sp-feimage.h"
 #include "xml/repr.h"
+#include <string.h>
 
+#include "display/nr-filter.h"
+#include "display/nr-filter-image.h"
 
 /* FeImage base class */
 
@@ -33,6 +38,7 @@ static void sp_feImage_release(SPObject *object);
 static void sp_feImage_set(SPObject *object, unsigned int key, gchar const *value);
 static void sp_feImage_update(SPObject *object, SPCtx *ctx, guint flags);
 static Inkscape::XML::Node *sp_feImage_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+static void sp_feImage_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter);
 
 static SPFilterPrimitiveClass *feImage_parent_class;
 
@@ -61,6 +67,7 @@ static void
 sp_feImage_class_init(SPFeImageClass *klass)
 {
     SPObjectClass *sp_object_class = (SPObjectClass *)klass;
+    SPFilterPrimitiveClass * sp_primitive_class = (SPFilterPrimitiveClass *)klass;
 
     feImage_parent_class = (SPFilterPrimitiveClass*)g_type_class_peek_parent(klass);
 
@@ -69,6 +76,8 @@ sp_feImage_class_init(SPFeImageClass *klass)
     sp_object_class->write = sp_feImage_write;
     sp_object_class->set = sp_feImage_set;
     sp_object_class->update = sp_feImage_update;
+
+    sp_primitive_class->build_renderer = sp_feImage_build_renderer;
 }
 
 static void
@@ -89,6 +98,11 @@ sp_feImage_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *re
     }
 
     /*LOAD ATTRIBUTES FROM REPR HERE*/
+/* apparently there's no attribute to load here 
+since 'in' and 'xlink:href' are common filter attributes.
+--Juca
+*/
+
 }
 
 /**
@@ -162,6 +176,20 @@ sp_feImage_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
     return repr;
 }
 
+static void sp_feImage_build_renderer(SPFilterPrimitive *primitive, NR::Filter *filter) {
+    g_assert(primitive != NULL);
+    g_assert(filter != NULL);
+
+    SPFeImage *sp_image = SP_FEIMAGE(primitive);
+
+    int primitive_n = filter->add_primitive(NR::NR_FILTER_IMAGE);
+    NR::FilterPrimitive *nr_primitive = filter->get_primitive(primitive_n);
+    NR::FilterImage *nr_image = dynamic_cast<NR::FilterImage*>(nr_primitive);
+    g_assert(nr_image != NULL);
+
+    sp_filter_primitive_renderer_common(primitive, nr_primitive);
+
+}
 
 /*
   Local Variables:
diff --git a/src/sp-feimage.h b/src/sp-feimage.h
index cb6f48f40..819eac20e 100644
--- a/src/sp-feimage.h
+++ b/src/sp-feimage.h
@@ -6,6 +6,7 @@
  */
 /*
  * Authors:
+ *   Felipe Corrêa da Silva Sanches <felipe.sanches@gmail.com>
  *   Hugo Rodrigues <haa.rodrigues@gmail.com>
  *
  * Copyright (C) 2006 Hugo Rodrigues
@@ -21,7 +22,11 @@ class SPFeImageClass;
 
 struct SPFeImage : public SPFilterPrimitive {
     /** IMAGE ATTRIBUTES HERE */
-    
+    /*
+        Apparently there's no attribute to keep here 
+        since 'in' and 'xlink:href' are common filter attributes.
+        --Juca
+    */
 };
 
 struct SPFeImageClass {