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 };
34 class FilterBlend : public FilterPrimitive {
35 public:
36 FilterBlend();
37 static FilterPrimitive *create();
38 virtual ~FilterBlend();
40 virtual int render(FilterSlot &slot, Matrix const &trans);
42 virtual void set_input(int slot);
43 virtual void set_input(int input, int slot);
44 void set_mode(FilterBlendMode mode);
46 private:
47 FilterBlendMode _blend_mode;
48 int _input2;
49 };
52 } /* namespace NR */
57 #endif /* __NR_FILTER_BLEND_H__ */
58 /*
59 Local Variables:
60 mode:c++
61 c-file-style:"stroustrup"
62 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
63 indent-tabs-mode:nil
64 fill-column:99
65 End:
66 */
67 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :