1 /*
2 * feFlood filter primitive renderer
3 *
4 * Authors:
5 * Felipe CorrĂȘa da Silva Sanches <felipe.sanches@gmail.com>
6 *
7 * Copyright (C) 2007 authors
8 *
9 * Released under GNU GPL, read the file 'COPYING' for more information
10 */
12 #include "display/nr-filter-flood.h"
13 #include "display/nr-filter-utils.h"
15 namespace Inkscape {
16 namespace Filters {
18 FilterFlood::FilterFlood()
19 {}
21 FilterPrimitive * FilterFlood::create() {
22 return new FilterFlood();
23 }
25 FilterFlood::~FilterFlood()
26 {}
28 int FilterFlood::render(FilterSlot &slot, FilterUnits const &/*units*/) {
29 NRPixBlock *in = slot.get(_input);
30 if (!in) {
31 g_warning("Missing source image for feFlood (in=%d)", _input);
32 return 1;
33 }
35 int i;
36 int in_w = in->area.x1 - in->area.x0;
37 int in_h = in->area.y1 - in->area.y0;
39 NRPixBlock *out = new NRPixBlock;
41 nr_pixblock_setup_fast(out, NR_PIXBLOCK_MODE_R8G8B8A8N,
42 in->area.x0, in->area.y0, in->area.x1, in->area.y1,
43 true);
45 unsigned char *out_data = NR_PIXBLOCK_PX(out);
47 unsigned char r,g,b,a;
48 r = CLAMP_D_TO_U8((color >> 24) % 256);
49 g = CLAMP_D_TO_U8((color >> 16) % 256);
50 b = CLAMP_D_TO_U8((color >> 8) % 256);
51 a = CLAMP_D_TO_U8(opacity*255);
53 for(i=0; i < 4*in_h*in_w; i+=4){
54 out_data[i]=r;
55 out_data[i+1]=g;
56 out_data[i+2]=b;
57 out_data[i+3]=a;
58 }
60 out->empty = FALSE;
61 slot.set(_output, out);
62 return 0;
63 }
65 void FilterFlood::set_color(guint32 c) {
66 color = c;
67 }
69 void FilterFlood::set_opacity(double o) {
70 opacity = o;
71 }
73 void FilterFlood::area_enlarge(NRRectL &/*area*/, Geom::Matrix const &/*trans*/)
74 {
75 }
77 } /* namespace Filters */
78 } /* namespace Inkscape */
80 /*
81 Local Variables:
82 mode:c++
83 c-file-style:"stroustrup"
84 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
85 indent-tabs-mode:nil
86 fill-column:99
87 End:
88 */
89 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :