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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 | #endif // WX_PRECOMP | |
20 | ||
21 | #include "wx/gtk/private.h" //for idle stuff | |
22 | ||
23 | //----------------------------------------------------------------------------- | |
24 | // wxCursor | |
25 | //----------------------------------------------------------------------------- | |
26 | ||
27 | class wxCursorRefData: public wxObjectRefData | |
28 | { | |
29 | public: | |
30 | ||
31 | wxCursorRefData(); | |
32 | ~wxCursorRefData(); | |
33 | ||
34 | GdkCursor *m_cursor; | |
35 | }; | |
36 | ||
37 | wxCursorRefData::wxCursorRefData() | |
38 | { | |
39 | m_cursor = (GdkCursor *) NULL; | |
40 | } | |
41 | ||
42 | wxCursorRefData::~wxCursorRefData() | |
43 | { | |
44 | if (m_cursor) gdk_cursor_unref( m_cursor ); | |
45 | } | |
46 | ||
47 | //----------------------------------------------------------------------------- | |
48 | ||
49 | #define M_CURSORDATA ((wxCursorRefData *)m_refData) | |
50 | ||
51 | IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject) | |
52 | ||
53 | wxCursor::wxCursor() | |
54 | { | |
55 | ||
56 | } | |
57 | ||
58 | wxCursor::wxCursor( int cursorId ) | |
59 | { | |
60 | m_refData = new wxCursorRefData(); | |
61 | ||
62 | GdkCursorType gdk_cur = GDK_LEFT_PTR; | |
63 | switch (cursorId) | |
64 | { | |
65 | case wxCURSOR_BLANK: | |
66 | { | |
67 | static const gchar bits[] = { 0 }; | |
68 | static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 }; | |
69 | ||
70 | GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1); | |
71 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap, | |
72 | pixmap, | |
73 | &color, | |
74 | &color, | |
75 | 0, 0); | |
76 | } | |
77 | return; | |
78 | ||
79 | case wxCURSOR_ARROW: // fall through to default | |
80 | case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break; | |
81 | case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break; | |
82 | case wxCURSOR_HAND: gdk_cur = GDK_HAND1; break; | |
83 | case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break; | |
84 | case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break; | |
85 | case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break; | |
86 | case wxCURSOR_ARROWWAIT: | |
87 | case wxCURSOR_WAIT: | |
88 | case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break; | |
89 | case wxCURSOR_SIZING: gdk_cur = GDK_SIZING; break; | |
90 | case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break; | |
91 | case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break; | |
92 | case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break; | |
93 | case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break; | |
94 | case wxCURSOR_SIZENWSE: | |
95 | case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break; | |
96 | case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break; | |
97 | case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break; | |
98 | case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break; | |
99 | case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break; | |
100 | case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break; | |
101 | case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break; | |
102 | case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break; | |
103 | case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break; | |
104 | ||
105 | case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break; | |
106 | case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break; | |
107 | /* | |
108 | case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break; | |
109 | case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break; | |
110 | case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break; | |
111 | case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break; | |
112 | */ | |
113 | ||
114 | default: | |
115 | wxFAIL_MSG(wxT("unsupported cursor type")); | |
116 | // will use the standard one | |
117 | break; | |
118 | } | |
119 | ||
120 | M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur ); | |
121 | } | |
122 | ||
123 | extern GtkWidget *wxGetRootWindow(); | |
124 | ||
125 | wxCursor::wxCursor(const char bits[], int width, int height, | |
126 | int hotSpotX, int hotSpotY, | |
127 | const char maskBits[], const wxColour *fg, const wxColour *bg) | |
128 | { | |
129 | if (!maskBits) | |
130 | maskBits = bits; | |
131 | if (!fg) | |
132 | fg = wxBLACK; | |
133 | if (!bg) | |
134 | bg = wxWHITE; | |
135 | if (hotSpotX < 0 || hotSpotX >= width) | |
136 | hotSpotX = 0; | |
137 | if (hotSpotY < 0 || hotSpotY >= height) | |
138 | hotSpotY = 0; | |
139 | ||
140 | GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height ); | |
141 | GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height); | |
142 | ||
143 | m_refData = new wxCursorRefData; | |
144 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap( | |
145 | data, mask, fg->GetColor(), bg->GetColor(), | |
146 | hotSpotX, hotSpotY ); | |
147 | ||
148 | g_object_unref (data); | |
149 | g_object_unref (mask); | |
150 | } | |
151 | ||
152 | #if wxUSE_IMAGE | |
153 | ||
154 | wxCursor::wxCursor( const wxImage & image ) | |
155 | { | |
156 | unsigned char * rgbBits = image.GetData(); | |
157 | int w = image.GetWidth() ; | |
158 | int h = image.GetHeight(); | |
159 | bool bHasMask = image.HasMask(); | |
160 | int imagebitcount = (w*h)/8; | |
161 | ||
162 | unsigned char * bits = new unsigned char [imagebitcount]; | |
163 | unsigned char * maskBits = new unsigned char [imagebitcount]; | |
164 | ||
165 | int i, j, i8; unsigned char c, cMask; | |
166 | for (i=0; i<imagebitcount; i++) | |
167 | { | |
168 | bits[i] = 0; | |
169 | i8 = i * 8; | |
170 | ||
171 | cMask = 1; | |
172 | for (j=0; j<8; j++) | |
173 | { | |
174 | // possible overflow if we do the summation first ? | |
175 | c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3; | |
176 | //if average value is > mid grey | |
177 | if (c>127) | |
178 | bits[i] = bits[i] | cMask; | |
179 | cMask = cMask * 2; | |
180 | } | |
181 | } | |
182 | ||
183 | unsigned long keyMaskColor; | |
184 | if (bHasMask) | |
185 | { | |
186 | unsigned char | |
187 | r = image.GetMaskRed(), | |
188 | g = image.GetMaskGreen(), | |
189 | b = image.GetMaskBlue(); | |
190 | ||
191 | for (i=0; i<imagebitcount; i++) | |
192 | { | |
193 | maskBits[i] = 0x0; | |
194 | i8 = i * 8; | |
195 | ||
196 | cMask = 1; | |
197 | for (j=0; j<8; j++) | |
198 | { | |
199 | if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b) | |
200 | maskBits[i] = maskBits[i] | cMask; | |
201 | cMask = cMask * 2; | |
202 | } | |
203 | } | |
204 | ||
205 | keyMaskColor = (r << 16) | (g << 8) | b; | |
206 | } | |
207 | else // no mask | |
208 | { | |
209 | for (i=0; i<imagebitcount; i++) | |
210 | maskBits[i] = 0xFF; | |
211 | ||
212 | // init it to avoid compiler warnings | |
213 | keyMaskColor = 0; | |
214 | } | |
215 | ||
216 | // find the most frequent color(s) | |
217 | wxImageHistogram histogram; | |
218 | image.ComputeHistogram(histogram); | |
219 | ||
220 | // colors as rrggbb | |
221 | unsigned long key; | |
222 | unsigned long value; | |
223 | ||
224 | long colMostFreq = 0; | |
225 | unsigned long nMost = 0; | |
226 | long colNextMostFreq = 0; | |
227 | unsigned long nNext = 0; | |
228 | for ( wxImageHistogram::iterator entry = histogram.begin(); | |
229 | entry != histogram.end(); | |
230 | ++entry ) | |
231 | { | |
232 | value = entry->second.value; | |
233 | key = entry->first; | |
234 | if ( !bHasMask || (key != keyMaskColor) ) | |
235 | { | |
236 | if (value > nMost) | |
237 | { | |
238 | nMost = value; | |
239 | colMostFreq = key; | |
240 | } | |
241 | else if (value > nNext) | |
242 | { | |
243 | nNext = value; | |
244 | colNextMostFreq = key; | |
245 | } | |
246 | } | |
247 | } | |
248 | ||
249 | wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16), | |
250 | (unsigned char)(colMostFreq >> 8), | |
251 | (unsigned char)(colMostFreq) ); | |
252 | ||
253 | wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16), | |
254 | (unsigned char)(colNextMostFreq >> 8), | |
255 | (unsigned char)(colNextMostFreq) ); | |
256 | ||
257 | int fg_intensity = fg.Red() + fg.Green() + fg.Blue(); | |
258 | int bg_intensity = bg.Red() + bg.Green() + bg.Blue(); | |
259 | ||
260 | if (bg_intensity > fg_intensity) | |
261 | { | |
262 | //swap fg and bg | |
263 | wxColour tmp = fg; | |
264 | fg = bg; | |
265 | bg = tmp; | |
266 | } | |
267 | ||
268 | int hotSpotX; | |
269 | int hotSpotY; | |
270 | ||
271 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X)) | |
272 | hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X); | |
273 | else | |
274 | hotSpotX = 0; | |
275 | ||
276 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y)) | |
277 | hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y); | |
278 | else | |
279 | hotSpotY = 0; | |
280 | ||
281 | if (hotSpotX < 0 || hotSpotX >= w) | |
282 | hotSpotX = 0; | |
283 | if (hotSpotY < 0 || hotSpotY >= h) | |
284 | hotSpotY = 0; | |
285 | ||
286 | GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window, | |
287 | (gchar *) bits, w, h); | |
288 | GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window, | |
289 | (gchar *) maskBits, w, h); | |
290 | ||
291 | m_refData = new wxCursorRefData; | |
292 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap | |
293 | ( | |
294 | data, | |
295 | mask, | |
296 | fg.GetColor(), bg.GetColor(), | |
297 | hotSpotX, hotSpotY | |
298 | ); | |
299 | ||
300 | g_object_unref (data); | |
301 | g_object_unref (mask); | |
302 | delete [] bits; | |
303 | delete [] maskBits; | |
304 | } | |
305 | ||
306 | #endif // wxUSE_IMAGE | |
307 | ||
308 | wxCursor::~wxCursor() | |
309 | { | |
310 | } | |
311 | ||
312 | bool wxCursor::operator == ( const wxCursor& cursor ) const | |
313 | { | |
314 | return m_refData == cursor.m_refData; | |
315 | } | |
316 | ||
317 | bool wxCursor::operator != ( const wxCursor& cursor ) const | |
318 | { | |
319 | return m_refData != cursor.m_refData; | |
320 | } | |
321 | ||
322 | bool wxCursor::Ok() const | |
323 | { | |
324 | return (m_refData != NULL); | |
325 | } | |
326 | ||
327 | GdkCursor *wxCursor::GetCursor() const | |
328 | { | |
329 | return M_CURSORDATA->m_cursor; | |
330 | } | |
331 | ||
332 | //----------------------------------------------------------------------------- | |
333 | // busy cursor routines | |
334 | //----------------------------------------------------------------------------- | |
335 | ||
336 | extern wxCursor g_globalCursor; | |
337 | ||
338 | static wxCursor gs_savedCursor; | |
339 | static int gs_busyCount = 0; | |
340 | ||
341 | const wxCursor &wxBusyCursor::GetStoredCursor() | |
342 | { | |
343 | return gs_savedCursor; | |
344 | } | |
345 | ||
346 | const wxCursor wxBusyCursor::GetBusyCursor() | |
347 | { | |
348 | return wxCursor(wxCURSOR_WATCH); | |
349 | } | |
350 | ||
351 | void wxEndBusyCursor() | |
352 | { | |
353 | if (--gs_busyCount > 0) | |
354 | return; | |
355 | ||
356 | wxSetCursor( gs_savedCursor ); | |
357 | gs_savedCursor = wxNullCursor; | |
358 | ||
359 | if (wxTheApp) | |
360 | wxTheApp->ProcessIdle(); | |
361 | } | |
362 | ||
363 | void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) ) | |
364 | { | |
365 | if (gs_busyCount++ > 0) | |
366 | return; | |
367 | ||
368 | wxASSERT_MSG( !gs_savedCursor.Ok(), | |
369 | wxT("forgot to call wxEndBusyCursor, will leak memory") ); | |
370 | ||
371 | gs_savedCursor = g_globalCursor; | |
372 | ||
373 | wxSetCursor( wxCursor(wxCURSOR_WATCH) ); | |
374 | ||
375 | if (wxTheApp) | |
376 | wxTheApp->ProcessIdle(); | |
377 | ||
378 | gdk_flush(); | |
379 | } | |
380 | ||
381 | bool wxIsBusy() | |
382 | { | |
383 | return gs_busyCount > 0; | |
384 | } | |
385 | ||
386 | void wxSetCursor( const wxCursor& cursor ) | |
387 | { | |
388 | if (g_isIdle) | |
389 | wxapp_install_idle_handler(); | |
390 | ||
391 | g_globalCursor = cursor; | |
392 | } |