Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/ViewportGeometry.h @ 134:4cff7b1ed31d
upgrade to year 2018
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 02 Jan 2018 09:51:36 +0100 |
parents | 28956ed68280 |
children | fccffbf99ba1 |
rev | line source |
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0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
134
4cff7b1ed31d
upgrade to year 2018
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
47
diff
changeset
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
47 | 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. | |
0 | 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 | |
47 | 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 | |
0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 **/ | |
20 | |
21 | |
22 #pragma once | |
23 | |
24 #include "../Viewport/CairoContext.h" | |
25 | |
26 namespace OrthancStone | |
27 { | |
28 // Not thread-safe | |
29 class ViewportGeometry | |
30 { | |
31 private: | |
32 // Extent of the scene (in world units) | |
33 double x1_; | |
34 double y1_; | |
35 double x2_; | |
36 double y2_; | |
37 | |
38 // Size of the display (in pixels) | |
39 unsigned int width_; | |
40 unsigned int height_; | |
41 | |
42 // Zoom/pan | |
43 double zoom_; | |
44 double panX_; // In pixels (display units) | |
45 double panY_; | |
46 | |
47 cairo_matrix_t transform_; // Scene-to-display transformation | |
48 | |
49 void ComputeTransform(); | |
50 | |
51 public: | |
52 ViewportGeometry(); | |
53 | |
54 void SetDisplaySize(unsigned int width, | |
55 unsigned int height); | |
56 | |
57 void SetSceneExtent(double x1, | |
58 double y1, | |
59 double x2, | |
60 double y2); | |
61 | |
62 void GetSceneExtent(double& x1, | |
63 double& y1, | |
64 double& x2, | |
65 double& y2) const; | |
66 | |
67 void MapDisplayToScene(double& sceneX /* out */, | |
68 double& sceneY /* out */, | |
69 double x, | |
70 double y) const; | |
71 | |
72 void MapSceneToDisplay(int& displayX /* out */, | |
73 int& displayY /* out */, | |
74 double x, | |
75 double y) const; | |
76 | |
77 unsigned int GetDisplayWidth() const | |
78 { | |
79 return width_; | |
80 } | |
81 | |
82 unsigned int GetDisplayHeight() const | |
83 { | |
84 return height_; | |
85 } | |
86 | |
87 double GetZoom() const | |
88 { | |
89 return zoom_; | |
90 } | |
91 | |
92 void SetDefaultView(); | |
93 | |
94 void ApplyTransform(CairoContext& context) const; | |
95 | |
96 void GetPan(double& x, | |
97 double& y) const; | |
98 | |
99 void SetPan(double x, | |
100 double y); | |
101 | |
102 void SetZoom(double zoom); | |
103 }; | |
104 } |