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comparison Framework/Widgets/LayeredSceneWidget.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 "WorldSceneWidget.h"
36
37 #include "../Layers/ILayerRendererFactory.h"
38
39
40 namespace OrthancStone
41 {
42 class LayeredSceneWidget : public WorldSceneWidget
43 {
44 public:
45 // Must be thread-safe
46 class ISliceObserver : public boost::noncopyable
47 {
48 public:
49 virtual ~ISliceObserver()
50 {
51 }
52
53 virtual void NotifySliceChange(const LayeredSceneWidget& source,
54 const SliceGeometry& slice) = 0;
55 };
56
57 private:
58 struct SliceChangeFunctor;
59 class Renderers;
60 class PendingLayers;
61 class Layer;
62
63 typedef ObserversRegistry<LayeredSceneWidget, ISliceObserver> Observers;
64
65 std::vector<Layer*> layers_;
66 std::auto_ptr<Renderers> renderers_;
67 std::auto_ptr<PendingLayers> pendingLayers_;
68 std::auto_ptr<Renderers> pendingRenderers_;
69 boost::mutex sliceMutex_;
70 SliceGeometry slice_;
71 Observers observers_;
72
73 protected:
74 virtual bool HasUpdateThread() const
75 {
76 return true;
77 }
78
79 virtual void UpdateStep();
80
81 virtual bool RenderScene(CairoContext& context,
82 const ViewportGeometry& view);
83
84 public:
85 LayeredSceneWidget();
86
87 virtual ~LayeredSceneWidget();
88
89 virtual SliceGeometry GetSlice();
90
91 virtual void GetSceneExtent(double& x1,
92 double& y1,
93 double& x2,
94 double& y2);
95
96 ILayerRendererFactory& AddLayer(size_t& layerIndex,
97 ILayerRendererFactory* factory); // Takes ownership
98
99 // Simpler version for basic use cases
100 void AddLayer(ILayerRendererFactory* factory); // Takes ownership
101
102 size_t GetLayerCount() const
103 {
104 return layers_.size();
105 }
106
107 RenderStyle GetLayerStyle(size_t layer);
108
109 void SetLayerStyle(size_t layer,
110 const RenderStyle& style);
111
112 void SetSlice(const SliceGeometry& slice);
113
114 void InvalidateLayer(unsigned int layer);
115
116 void InvalidateAllLayers();
117
118 virtual void Start();
119
120 virtual void Stop();
121
122 using WorldSceneWidget::Register;
123 using WorldSceneWidget::Unregister;
124
125 void Register(ISliceObserver& observer)
126 {
127 observers_.Register(observer);
128 }
129
130 void Unregister(ISliceObserver& observer)
131 {
132 observers_.Unregister(observer);
133 }
134 };
135 }