1 #ifndef __NR_FILTER_BLEND_H__
2 #define __NR_FILTER_BLEND_H__
4 /*
5 * SVG feBlend renderer
6 *
7 * "This filter composites two objects together using commonly used
8 * imaging software blending modes. It performs a pixel-wise combination
9 * of two input images."
10 * http://www.w3.org/TR/SVG11/filters.html#feBlend
11 *
12 * Authors:
13 * Niko Kiirala <niko@kiirala.com>
14 *
15 * Copyright (C) 2007 authors
16 *
17 * Released under GNU GPL, read the file 'COPYING' for more information
18 */
20 #include "display/nr-filter-primitive.h"
21 #include "display/nr-filter-slot.h"
22 #include "libnr/nr-matrix.h"
24 namespace NR {
26 enum FilterBlendMode {
27 BLEND_NORMAL,
28 BLEND_MULTIPLY,
29 BLEND_SCREEN,
30 BLEND_DARKEN,
31 BLEND_LIGHTEN,
32 BLEND_ENDMODE
33 };
35 class FilterBlend : public FilterPrimitive {
36 public:
37 FilterBlend();
38 static FilterPrimitive *create();
39 virtual ~FilterBlend();
41 virtual int render(FilterSlot &slot, Matrix const &trans);
43 virtual void set_input(int slot);
44 virtual void set_input(int input, int slot);
45 void set_mode(FilterBlendMode mode);
47 private:
48 FilterBlendMode _blend_mode;
49 int _input2;
50 };
53 } /* namespace NR */
58 #endif /* __NR_FILTER_BLEND_H__ */
59 /*
60 Local Variables:
61 mode:c++
62 c-file-style:"stroustrup"
63 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
64 indent-tabs-mode:nil
65 fill-column:99
66 End:
67 */
68 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :