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

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CairoCompositor
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 17:28:18 +0200
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children 80829436ce0c 6e888cf6a48b
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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 "CairoInfoPanelRenderer.h"
23
24 #include "../InfoPanelSceneLayer.h"
25
26 namespace OrthancStone
27 {
28 namespace Internals
29 {
30 void CairoInfoPanelRenderer::Update(const ISceneLayer& layer)
31 {
32 const InfoPanelSceneLayer& l = dynamic_cast<const InfoPanelSceneLayer&>(layer);
33
34 texture_.Copy(l.GetTexture(), true);
35 anchor_ = l.GetAnchor();
36 isLinearInterpolation_ = l.IsLinearInterpolation();
37 }
38
39
40 void CairoInfoPanelRenderer::Render(const AffineTransform2D& transform)
41 {
42 int dx, dy;
43 InfoPanelSceneLayer::ComputeAnchorLocation(
44 dx, dy, anchor_, texture_.GetWidth(), texture_.GetHeight(),
45 target_.GetCairoWidth(), target_.GetCairoHeight());
46
47 cairo_t* cr = target_.GetCairoContext();
48
49 cairo_save(cr);
50
51 cairo_matrix_t t;
52 cairo_matrix_init_identity(&t);
53 cairo_matrix_translate(&t, dx, dy);
54 cairo_transform(cr, &t);
55
56 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
57 cairo_set_source_surface(cr, texture_.GetObject(), 0, 0);
58
59 if (isLinearInterpolation_)
60 {
61 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR);
62 }
63 else
64 {
65 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
66 }
67
68 cairo_paint(cr);
69
70 cairo_restore(cr);
71 }
72 }
73 }