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68be9f09 | 1 | ///////////////////////////////////////////////////////////////////////////// |
11e2dfd3 | 2 | // Name: dragimag.h |
68be9f09 JS |
3 | // Purpose: wxDragImage sample |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 28/2/2000 | |
68be9f09 JS |
7 | // Copyright: (c) Julian Smart |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifndef _WX_DRAGIMAGSAMPLE_ | |
12 | #define _WX_DRAGIMAGSAMPLE_ | |
13 | ||
14 | // derived classes | |
15 | ||
16 | class MyFrame; | |
17 | class MyApp; | |
18 | class MyCanvas; | |
19 | class DragShape; | |
20 | ||
21 | // MyFrame | |
22 | ||
23 | class MyFrame: public wxFrame | |
24 | { | |
25 | public: | |
26 | MyFrame(); | |
27 | ||
28 | void OnAbout( wxCommandEvent &event ); | |
29 | void OnQuit( wxCommandEvent &event ); | |
30 | ||
31 | MyCanvas* GetCanvas() const { return m_canvas; } | |
32 | void SetCanvas(MyCanvas* canvas) { m_canvas = canvas; } | |
33 | ||
34 | private: | |
35 | MyCanvas* m_canvas; | |
36 | ||
37 | DECLARE_DYNAMIC_CLASS(MyFrame) | |
38 | DECLARE_EVENT_TABLE() | |
39 | }; | |
40 | ||
41 | // MyApp | |
42 | ||
43 | class MyApp: public wxApp | |
44 | { | |
45 | public: | |
46 | MyApp(); | |
47 | virtual bool OnInit(); | |
0cbff120 | 48 | virtual int OnExit(); |
68be9f09 JS |
49 | |
50 | //// Operations | |
51 | ||
52 | // Tile the bitmap | |
53 | bool TileBitmap(const wxRect& rect, wxDC& dc, wxBitmap& bitmap); | |
54 | ||
55 | //// Accessors | |
56 | wxBitmap& GetBackgroundBitmap() const { return (wxBitmap&) m_background; } | |
57 | ||
58 | bool GetUseScreen() const { return m_useScreen; } | |
59 | void SetUseScreen(bool useScreen) { m_useScreen = useScreen; } | |
60 | ||
61 | void OnUseScreen(wxCommandEvent& event); | |
62 | ||
63 | protected: | |
64 | wxBitmap m_background; | |
65 | bool m_useScreen; | |
66 | ||
67 | DECLARE_EVENT_TABLE() | |
68 | }; | |
69 | ||
70 | DECLARE_APP(MyApp) | |
71 | ||
72 | #define TEST_USE_SCREEN 100 | |
73 | ||
74 | // MyCanvas | |
75 | ||
76 | // Dragging modes | |
77 | #define TEST_DRAG_NONE 0 | |
78 | #define TEST_DRAG_START 1 | |
79 | #define TEST_DRAG_DRAGGING 2 | |
80 | ||
81 | class MyCanvas: public wxScrolledWindow | |
82 | { | |
83 | public: | |
84 | MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size ); | |
85 | ~MyCanvas(); | |
86 | ||
87 | void OnPaint( wxPaintEvent &event ); | |
88 | void OnEraseBackground(wxEraseEvent& event); | |
89 | void OnMouseEvent(wxMouseEvent& event); | |
90 | ||
91 | void DrawShapes(wxDC& dc); | |
92 | void EraseShape(DragShape* shape, wxDC& dc); | |
93 | void ClearShapes(); | |
94 | DragShape* FindShape(const wxPoint& pt) const; | |
95 | ||
96 | wxList& GetDisplayList() { return m_displayList; } | |
97 | ||
98 | protected: | |
99 | ||
100 | private: | |
101 | wxList m_displayList; // A list of DragShapes | |
102 | int m_dragMode; | |
103 | DragShape* m_draggedShape; | |
104 | DragShape* m_currentlyHighlighted; // The shape that's being highlighted | |
105 | wxPoint m_dragStartPos; | |
106 | wxDragImage* m_dragImage; | |
107 | ||
108 | DECLARE_CLASS(MyCanvas) | |
109 | DECLARE_EVENT_TABLE() | |
110 | }; | |
111 | ||
112 | ||
113 | // Ways to drag a shape | |
114 | ||
115 | #define SHAPE_DRAG_BITMAP 1 | |
116 | #define SHAPE_DRAG_TEXT 2 | |
117 | #define SHAPE_DRAG_ICON 3 | |
118 | ||
119 | // Shape | |
120 | ||
121 | class DragShape: public wxObject | |
122 | { | |
123 | public: | |
124 | DragShape(const wxBitmap& bitmap); | |
925e9792 | 125 | ~DragShape(){}; |
68be9f09 JS |
126 | |
127 | //// Operations | |
128 | ||
129 | bool HitTest(const wxPoint& pt) const; | |
aa7a6a0e | 130 | bool Draw(wxDC& dc, bool highlight = false); |
68be9f09 JS |
131 | |
132 | //// Accessors | |
133 | ||
134 | wxPoint GetPosition() const { return m_pos; } | |
135 | void SetPosition(const wxPoint& pos) { m_pos = pos; } | |
136 | ||
137 | wxRect GetRect() const { return wxRect(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight()); } | |
138 | ||
139 | wxBitmap& GetBitmap() const { return (wxBitmap&) m_bitmap; } | |
140 | void SetBitmap(const wxBitmap& bitmap) { m_bitmap = bitmap; } | |
141 | ||
142 | int GetDragMethod() const { return m_dragMethod; } | |
143 | void SetDragMethod(int method) { m_dragMethod = method; } | |
144 | ||
145 | bool IsShown() const { return m_show; } | |
146 | void SetShow(bool show) { m_show = show; } | |
147 | ||
148 | protected: | |
149 | wxPoint m_pos; | |
150 | wxBitmap m_bitmap; | |
151 | int m_dragMethod; | |
152 | bool m_show; | |
153 | }; | |
154 | ||
aa7a6a0e JS |
155 | // MyDragImage |
156 | // A derived class is required since we're overriding UpdateBackingFromWindow, | |
157 | // for compatibility with Mac OS X (Core Graphics) which does not support blitting | |
158 | // from a window. | |
159 | ||
160 | class MyDragImage: public wxDragImage | |
161 | { | |
162 | public: | |
163 | MyDragImage(MyCanvas* canvas): m_canvas(canvas) {} | |
164 | ||
165 | MyDragImage(MyCanvas* canvas, const wxBitmap& image, const wxCursor& cursor = wxNullCursor): | |
166 | wxDragImage(image, cursor), m_canvas(canvas) | |
167 | { | |
168 | } | |
169 | ||
170 | MyDragImage(MyCanvas* canvas, const wxIcon& image, const wxCursor& cursor = wxNullCursor): | |
171 | wxDragImage(image, cursor), m_canvas(canvas) | |
172 | { | |
173 | } | |
174 | ||
175 | MyDragImage(MyCanvas* canvas, const wxString& str, const wxCursor& cursor = wxNullCursor): | |
176 | wxDragImage(str, cursor), m_canvas(canvas) | |
177 | { | |
178 | } | |
179 | ||
180 | // On some platforms, notably Mac OS X with Core Graphics, we can't blit from | |
181 | // a window, so we need to draw the background explicitly. | |
182 | virtual bool UpdateBackingFromWindow(wxDC& windowDC, wxMemoryDC& destDC, const wxRect& sourceRect, | |
183 | const wxRect& destRect) const; | |
184 | ||
185 | protected: | |
186 | MyCanvas* m_canvas; | |
187 | }; | |
188 | ||
68be9f09 JS |
189 | #endif |
190 | // _WX_DRAGIMAGSAMPLE_ |