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comparison OrthancStone/Sources/Scene2DViewport/MeasureTool.h @ 1576:92fca2b3ba3d

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sanitizing the handling of canvas size
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 24 Sep 2020 16:40:30 +0200
parents 85e117739eca
children 8563ea5d8ae4
comparison
equal deleted inserted replaced
1575:e4a52cbbdd70 1576:92fca2b3ba3d
40 40
41 class MeasureTool : public ObserverBase<MeasureTool> 41 class MeasureTool : public ObserverBase<MeasureTool>
42 { 42 {
43 private: 43 private:
44 bool enabled_; 44 bool enabled_;
45
46
47 protected:
48 explicit MeasureTool(boost::shared_ptr<IViewport> viewport);
49
50 void PostConstructor();
51
52 /**
53 The measuring tool may exist in a standalone fashion, without any available
54 scene (because the controller is dead or dying). This call allows to check
55 before accessing the scene.
56 */
57 bool IsSceneAlive() const;
58
59 /**
60 This is the meat of the tool: this method must [create (if needed) and]
61 update the layers and their data according to the measure tool kind and
62 current state. This is repeatedly called during user interaction
63 */
64 virtual void RefreshScene() = 0;
65
66 /**
67 enabled_ is not accessible by subclasses because there is a state machine
68 that we do not wanna mess with
69 */
70 bool IsEnabled() const;
71
72 /**
73 Protected to allow sub-classes to use this weak pointer in factory methods
74 (pass them to created objects)
75 */
76 boost::shared_ptr<IViewport> viewport_;
77
45 78
46 public: 79 public:
47 virtual ~MeasureTool() 80 virtual ~MeasureTool()
48 { 81 {
49 } 82 }
112 145
113 /** 146 /**
114 A description of the measuring tool, useful in debug logs 147 A description of the measuring tool, useful in debug logs
115 */ 148 */
116 virtual std::string GetDescription() = 0; 149 virtual std::string GetDescription() = 0;
117
118 protected:
119 explicit MeasureTool(boost::shared_ptr<IViewport> viewport);
120
121 void PostConstructor();
122
123 /**
124 The measuring tool may exist in a standalone fashion, without any available
125 scene (because the controller is dead or dying). This call allows to check
126 before accessing the scene.
127 */
128 bool IsSceneAlive() const;
129
130 /**
131 This is the meat of the tool: this method must [create (if needed) and]
132 update the layers and their data according to the measure tool kind and
133 current state. This is repeatedly called during user interaction
134 */
135 virtual void RefreshScene() = 0;
136
137 /**
138 enabled_ is not accessible by subclasses because there is a state machine
139 that we do not wanna mess with
140 */
141 bool IsEnabled() const;
142
143 /**
144 Protected to allow sub-classes to use this weak pointer in factory methods
145 (pass them to created objects)
146 */
147 boost::shared_ptr<IViewport> viewport_;
148 }; 150 };
149 151
150 class MeasureToolMemento 152 class MeasureToolMemento
151 { 153 {
152 public: 154 public: