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comparison Framework/Widgets/WorldSceneWidget.h @ 0:351ab0da0150

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initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Oct 2016 15:34:11 +0200
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children 7207a407bcd8
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-1:000000000000 0:351ab0da0150
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #pragma once
34
35 #include "CairoWidget.h"
36 #include "IWorldSceneInteractor.h"
37
38 #include "../Toolbox/SharedValue.h"
39 #include "../Toolbox/ViewportGeometry.h"
40
41 namespace OrthancStone
42 {
43 class WorldSceneWidget : public CairoWidget
44 {
45 public:
46 // Must be thread-safe
47 class IWorldObserver : public boost::noncopyable
48 {
49 public:
50 virtual ~IWorldObserver()
51 {
52 }
53
54 virtual void NotifySizeChange(const WorldSceneWidget& source,
55 ViewportGeometry& view) = 0; // Can be tuned by the observer
56
57 virtual void NotifyViewChange(const WorldSceneWidget& source,
58 const ViewportGeometry& view) = 0;
59 };
60
61 private:
62 struct ViewChangeFunctor;
63 struct SizeChangeFunctor;
64
65 class SceneMouseTracker;
66 class PanMouseTracker;
67 class ZoomMouseTracker;
68
69 typedef ObserversRegistry<WorldSceneWidget, IWorldObserver> Observers;
70
71 SharedValue<ViewportGeometry> view_;
72 Observers observers_;
73 IWorldSceneInteractor* interactor_;
74
75
76 protected:
77 virtual bool RenderScene(CairoContext& context,
78 const ViewportGeometry& view) = 0;
79
80 virtual bool HasUpdateThread() const
81 {
82 return false;
83 }
84
85 virtual void UpdateStep();
86
87 virtual bool RenderCairo(CairoContext& context);
88
89 virtual void RenderMouseOverCairo(CairoContext& context,
90 int x,
91 int y);
92
93 void SetSceneExtent(SharedValue<ViewportGeometry>::Locker& locker);
94
95 public:
96 WorldSceneWidget() :
97 interactor_(NULL)
98 {
99 }
100
101 using WidgetBase::Register;
102 using WidgetBase::Unregister;
103
104 void Register(IWorldObserver& observer)
105 {
106 observers_.Register(observer);
107 }
108
109 void Unregister(IWorldObserver& observer)
110 {
111 observers_.Unregister(observer);
112 }
113
114 virtual SliceGeometry GetSlice() = 0;
115
116 virtual void GetSceneExtent(double& x1,
117 double& y1,
118 double& x2,
119 double& y2) = 0;
120
121 virtual void SetSize(unsigned int width,
122 unsigned int height);
123
124 void SetInteractor(IWorldSceneInteractor& interactor);
125
126 virtual void Start();
127
128 void SetDefaultView();
129
130 void SetView(const ViewportGeometry& view);
131
132 ViewportGeometry GetView();
133
134 virtual IMouseTracker* CreateMouseTracker(MouseButton button,
135 int x,
136 int y,
137 KeyboardModifiers modifiers);
138
139 virtual void RenderSceneMouseOver(CairoContext& context,
140 const ViewportGeometry& view,
141 double x,
142 double y);
143
144 virtual IWorldSceneMouseTracker* CreateMouseSceneTracker(const ViewportGeometry& view,
145 MouseButton button,
146 double x,
147 double y,
148 KeyboardModifiers modifiers);
149
150 virtual void MouseWheel(MouseWheelDirection direction,
151 int x,
152 int y,
153 KeyboardModifiers modifiers);
154
155 virtual void KeyPressed(char key,
156 KeyboardModifiers modifiers);
157 };
158 }