Mercurial > hg > orthanc-stone

comparison Framework/Scene2D/Internals/CairoColorTextureRenderer.cpp @ 597:9e51fb773bbd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
CairoCompositor
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 17:28:18 +0200
parents
children 55411e7da2f7
comparison
equal deleted inserted replaced
596:b716763571ad 597:9e51fb773bbd
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #include "CairoColorTextureRenderer.h"
23
24 #include "../ColorTextureSceneLayer.h"
25
26 namespace OrthancStone
27 {
28 namespace Internals
29 {
30 CairoColorTextureRenderer::CairoColorTextureRenderer(ICairoContextProvider& target,
31 const ISceneLayer& layer) :
32 target_(target)
33 {
34 Update(layer);
35 }
36
37
38 void CairoColorTextureRenderer::Update(const ISceneLayer& layer)
39 {
40 const ColorTextureSceneLayer& l = dynamic_cast<const ColorTextureSceneLayer&>(layer);
41
42 texture_.Copy(l.GetTexture(), true);
43 textureTransform_ = l.GetTransform();
44 isLinearInterpolation_ = l.IsLinearInterpolation();
45 }
46
47
48 void CairoColorTextureRenderer::Render(const AffineTransform2D& transform)
49 {
50 cairo_t* cr = target_.GetCairoContext();
51
52 AffineTransform2D t =
53 AffineTransform2D::Combine(transform, textureTransform_);
54 Matrix h = t.GetHomogeneousMatrix();
55
56 cairo_save(cr);
57
58 cairo_matrix_t m;
59 cairo_matrix_init(&m, h(0, 0), h(1, 0), h(0, 1), h(1, 1), h(0, 2), h(1, 2));
60 cairo_transform(cr, &m);
61
62 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
63 cairo_set_source_surface(cr, texture_.GetObject(), 0, 0);
64
65 if (isLinearInterpolation_)
66 {
67 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR);
68 }
69 else
70 {
71 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
72 }
73
74 cairo_paint(cr);
75
76 cairo_restore(cr);
77 }
78 }
79 }