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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/gtk/cursor.cpp | |
3 | // Purpose: | |
4 | // Author: Robert Roebling | |
5 | // Id: $Id$ | |
6 | // Copyright: (c) 1998 Robert Roebling | |
7 | // Licence: wxWindows licence | |
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | ||
10 | // For compilers that support precompilation, includes "wx.h". | |
11 | #include "wx/wxprec.h" | |
12 | ||
13 | #include "wx/cursor.h" | |
14 | ||
15 | #ifndef WX_PRECOMP | |
16 | #include "wx/app.h" | |
17 | #include "wx/utils.h" | |
18 | #include "wx/image.h" | |
19 | #include "wx/colour.h" | |
20 | #endif // WX_PRECOMP | |
21 | ||
22 | #include "wx/gtk/private.h" //for idle stuff | |
23 | ||
24 | //----------------------------------------------------------------------------- | |
25 | // wxCursor | |
26 | //----------------------------------------------------------------------------- | |
27 | ||
28 | class wxCursorRefData: public wxObjectRefData | |
29 | { | |
30 | public: | |
31 | ||
32 | wxCursorRefData(); | |
33 | virtual ~wxCursorRefData(); | |
34 | ||
35 | GdkCursor *m_cursor; | |
36 | }; | |
37 | ||
38 | wxCursorRefData::wxCursorRefData() | |
39 | { | |
40 | m_cursor = (GdkCursor *) NULL; | |
41 | } | |
42 | ||
43 | wxCursorRefData::~wxCursorRefData() | |
44 | { | |
45 | if (m_cursor) gdk_cursor_unref( m_cursor ); | |
46 | } | |
47 | ||
48 | //----------------------------------------------------------------------------- | |
49 | ||
50 | #define M_CURSORDATA ((wxCursorRefData *)m_refData) | |
51 | ||
52 | IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject) | |
53 | ||
54 | wxCursor::wxCursor() | |
55 | { | |
56 | ||
57 | } | |
58 | ||
59 | wxCursor::wxCursor( int cursorId ) | |
60 | { | |
61 | m_refData = new wxCursorRefData(); | |
62 | ||
63 | GdkCursorType gdk_cur = GDK_LEFT_PTR; | |
64 | switch (cursorId) | |
65 | { | |
66 | case wxCURSOR_BLANK: | |
67 | { | |
68 | static const gchar bits[] = { 0 }; | |
69 | static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 }; | |
70 | ||
71 | GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1); | |
72 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap, | |
73 | pixmap, | |
74 | &color, | |
75 | &color, | |
76 | 0, 0); | |
77 | } | |
78 | return; | |
79 | ||
80 | case wxCURSOR_ARROW: // fall through to default | |
81 | case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break; | |
82 | case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break; | |
83 | case wxCURSOR_HAND: gdk_cur = GDK_HAND1; break; | |
84 | case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break; | |
85 | case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break; | |
86 | case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break; | |
87 | case wxCURSOR_ARROWWAIT: | |
88 | case wxCURSOR_WAIT: | |
89 | case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break; | |
90 | case wxCURSOR_SIZING: gdk_cur = GDK_FLEUR; break; | |
91 | case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break; | |
92 | case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break; | |
93 | case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break; | |
94 | case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break; | |
95 | case wxCURSOR_SIZENWSE: | |
96 | case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break; | |
97 | case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break; | |
98 | case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break; | |
99 | case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break; | |
100 | case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break; | |
101 | case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break; | |
102 | case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break; | |
103 | case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break; | |
104 | case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break; | |
105 | ||
106 | case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break; | |
107 | case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break; | |
108 | /* | |
109 | case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break; | |
110 | case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break; | |
111 | case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break; | |
112 | case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break; | |
113 | */ | |
114 | ||
115 | default: | |
116 | wxFAIL_MSG(wxT("unsupported cursor type")); | |
117 | // will use the standard one | |
118 | break; | |
119 | } | |
120 | ||
121 | M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur ); | |
122 | } | |
123 | ||
124 | extern GtkWidget *wxGetRootWindow(); | |
125 | ||
126 | wxCursor::wxCursor(const char bits[], int width, int height, | |
127 | int hotSpotX, int hotSpotY, | |
128 | const char maskBits[], const wxColour *fg, const wxColour *bg) | |
129 | { | |
130 | if (!maskBits) | |
131 | maskBits = bits; | |
132 | if (!fg) | |
133 | fg = wxBLACK; | |
134 | if (!bg) | |
135 | bg = wxWHITE; | |
136 | if (hotSpotX < 0 || hotSpotX >= width) | |
137 | hotSpotX = 0; | |
138 | if (hotSpotY < 0 || hotSpotY >= height) | |
139 | hotSpotY = 0; | |
140 | ||
141 | GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height ); | |
142 | GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height); | |
143 | ||
144 | m_refData = new wxCursorRefData; | |
145 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap( | |
146 | data, mask, fg->GetColor(), bg->GetColor(), | |
147 | hotSpotX, hotSpotY ); | |
148 | ||
149 | g_object_unref (data); | |
150 | g_object_unref (mask); | |
151 | } | |
152 | ||
153 | #if wxUSE_IMAGE | |
154 | ||
155 | wxCursor::wxCursor( const wxImage & image ) | |
156 | { | |
157 | unsigned char * rgbBits = image.GetData(); | |
158 | int w = image.GetWidth() ; | |
159 | int h = image.GetHeight(); | |
160 | bool bHasMask = image.HasMask(); | |
161 | int imagebitcount = (w*h)/8; | |
162 | ||
163 | unsigned char * bits = new unsigned char [imagebitcount]; | |
164 | unsigned char * maskBits = new unsigned char [imagebitcount]; | |
165 | ||
166 | int i, j, i8; unsigned char c, cMask; | |
167 | for (i=0; i<imagebitcount; i++) | |
168 | { | |
169 | bits[i] = 0; | |
170 | i8 = i * 8; | |
171 | ||
172 | cMask = 1; | |
173 | for (j=0; j<8; j++) | |
174 | { | |
175 | // possible overflow if we do the summation first ? | |
176 | c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3; | |
177 | //if average value is > mid grey | |
178 | if (c>127) | |
179 | bits[i] = bits[i] | cMask; | |
180 | cMask = cMask * 2; | |
181 | } | |
182 | } | |
183 | ||
184 | unsigned long keyMaskColor; | |
185 | if (bHasMask) | |
186 | { | |
187 | unsigned char | |
188 | r = image.GetMaskRed(), | |
189 | g = image.GetMaskGreen(), | |
190 | b = image.GetMaskBlue(); | |
191 | ||
192 | for (i=0; i<imagebitcount; i++) | |
193 | { | |
194 | maskBits[i] = 0x0; | |
195 | i8 = i * 8; | |
196 | ||
197 | cMask = 1; | |
198 | for (j=0; j<8; j++) | |
199 | { | |
200 | if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b) | |
201 | maskBits[i] = maskBits[i] | cMask; | |
202 | cMask = cMask * 2; | |
203 | } | |
204 | } | |
205 | ||
206 | keyMaskColor = (r << 16) | (g << 8) | b; | |
207 | } | |
208 | else // no mask | |
209 | { | |
210 | for (i=0; i<imagebitcount; i++) | |
211 | maskBits[i] = 0xFF; | |
212 | ||
213 | // init it to avoid compiler warnings | |
214 | keyMaskColor = 0; | |
215 | } | |
216 | ||
217 | // find the most frequent color(s) | |
218 | wxImageHistogram histogram; | |
219 | image.ComputeHistogram(histogram); | |
220 | ||
221 | // colors as rrggbb | |
222 | unsigned long key; | |
223 | unsigned long value; | |
224 | ||
225 | long colMostFreq = 0; | |
226 | unsigned long nMost = 0; | |
227 | long colNextMostFreq = 0; | |
228 | unsigned long nNext = 0; | |
229 | for ( wxImageHistogram::iterator entry = histogram.begin(); | |
230 | entry != histogram.end(); | |
231 | ++entry ) | |
232 | { | |
233 | value = entry->second.value; | |
234 | key = entry->first; | |
235 | if ( !bHasMask || (key != keyMaskColor) ) | |
236 | { | |
237 | if (value > nMost) | |
238 | { | |
239 | nMost = value; | |
240 | colMostFreq = key; | |
241 | } | |
242 | else if (value > nNext) | |
243 | { | |
244 | nNext = value; | |
245 | colNextMostFreq = key; | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
250 | wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16), | |
251 | (unsigned char)(colMostFreq >> 8), | |
252 | (unsigned char)(colMostFreq) ); | |
253 | ||
254 | wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16), | |
255 | (unsigned char)(colNextMostFreq >> 8), | |
256 | (unsigned char)(colNextMostFreq) ); | |
257 | ||
258 | int fg_intensity = fg.Red() + fg.Green() + fg.Blue(); | |
259 | int bg_intensity = bg.Red() + bg.Green() + bg.Blue(); | |
260 | ||
261 | if (bg_intensity > fg_intensity) | |
262 | { | |
263 | //swap fg and bg | |
264 | wxColour tmp = fg; | |
265 | fg = bg; | |
266 | bg = tmp; | |
267 | } | |
268 | ||
269 | int hotSpotX; | |
270 | int hotSpotY; | |
271 | ||
272 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X)) | |
273 | hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X); | |
274 | else | |
275 | hotSpotX = 0; | |
276 | ||
277 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y)) | |
278 | hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y); | |
279 | else | |
280 | hotSpotY = 0; | |
281 | ||
282 | if (hotSpotX < 0 || hotSpotX >= w) | |
283 | hotSpotX = 0; | |
284 | if (hotSpotY < 0 || hotSpotY >= h) | |
285 | hotSpotY = 0; | |
286 | ||
287 | GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window, | |
288 | (gchar *) bits, w, h); | |
289 | GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window, | |
290 | (gchar *) maskBits, w, h); | |
291 | ||
292 | m_refData = new wxCursorRefData; | |
293 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap | |
294 | ( | |
295 | data, | |
296 | mask, | |
297 | fg.GetColor(), bg.GetColor(), | |
298 | hotSpotX, hotSpotY | |
299 | ); | |
300 | ||
301 | g_object_unref (data); | |
302 | g_object_unref (mask); | |
303 | delete [] bits; | |
304 | delete [] maskBits; | |
305 | } | |
306 | ||
307 | #endif // wxUSE_IMAGE | |
308 | ||
309 | wxCursor::~wxCursor() | |
310 | { | |
311 | } | |
312 | ||
313 | bool wxCursor::IsOk() const | |
314 | { | |
315 | return (m_refData != NULL); | |
316 | } | |
317 | ||
318 | GdkCursor *wxCursor::GetCursor() const | |
319 | { | |
320 | return M_CURSORDATA->m_cursor; | |
321 | } | |
322 | ||
323 | //----------------------------------------------------------------------------- | |
324 | // busy cursor routines | |
325 | //----------------------------------------------------------------------------- | |
326 | ||
327 | extern wxCursor g_globalCursor; | |
328 | ||
329 | static wxCursor gs_savedCursor; | |
330 | static int gs_busyCount = 0; | |
331 | ||
332 | const wxCursor &wxBusyCursor::GetStoredCursor() | |
333 | { | |
334 | return gs_savedCursor; | |
335 | } | |
336 | ||
337 | const wxCursor wxBusyCursor::GetBusyCursor() | |
338 | { | |
339 | return wxCursor(wxCURSOR_WATCH); | |
340 | } | |
341 | ||
342 | void wxEndBusyCursor() | |
343 | { | |
344 | if (--gs_busyCount > 0) | |
345 | return; | |
346 | ||
347 | wxSetCursor( gs_savedCursor ); | |
348 | gs_savedCursor = wxNullCursor; | |
349 | ||
350 | if (wxTheApp) | |
351 | wxTheApp->ProcessIdle(); | |
352 | } | |
353 | ||
354 | void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) ) | |
355 | { | |
356 | if (gs_busyCount++ > 0) | |
357 | return; | |
358 | ||
359 | wxASSERT_MSG( !gs_savedCursor.Ok(), | |
360 | wxT("forgot to call wxEndBusyCursor, will leak memory") ); | |
361 | ||
362 | gs_savedCursor = g_globalCursor; | |
363 | ||
364 | wxSetCursor( wxCursor(wxCURSOR_WATCH) ); | |
365 | ||
366 | if (wxTheApp) | |
367 | wxTheApp->ProcessIdle(); | |
368 | ||
369 | gdk_flush(); | |
370 | } | |
371 | ||
372 | bool wxIsBusy() | |
373 | { | |
374 | return gs_busyCount > 0; | |
375 | } | |
376 | ||
377 | void wxSetCursor( const wxCursor& cursor ) | |
378 | { | |
379 | if (g_isIdle) | |
380 | wxapp_install_idle_handler(); | |
381 | ||
382 | g_globalCursor = cursor; | |
383 | } |