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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 | #endif // WX_PRECOMP | |
19 | ||
20 | #include "wx/gtk/private.h" //for idle stuff | |
21 | ||
22 | #include <gdk/gdk.h> | |
23 | #include <gtk/gtk.h> | |
24 | ||
25 | //----------------------------------------------------------------------------- | |
26 | // wxCursor | |
27 | //----------------------------------------------------------------------------- | |
28 | ||
29 | class wxCursorRefData: public wxObjectRefData | |
30 | { | |
31 | public: | |
32 | ||
33 | wxCursorRefData(); | |
34 | ~wxCursorRefData(); | |
35 | ||
36 | GdkCursor *m_cursor; | |
37 | }; | |
38 | ||
39 | wxCursorRefData::wxCursorRefData() | |
40 | { | |
41 | m_cursor = (GdkCursor *) NULL; | |
42 | } | |
43 | ||
44 | wxCursorRefData::~wxCursorRefData() | |
45 | { | |
46 | if (m_cursor) gdk_cursor_unref( m_cursor ); | |
47 | } | |
48 | ||
49 | //----------------------------------------------------------------------------- | |
50 | ||
51 | #define M_CURSORDATA ((wxCursorRefData *)m_refData) | |
52 | ||
53 | IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject) | |
54 | ||
55 | wxCursor::wxCursor() | |
56 | { | |
57 | ||
58 | } | |
59 | ||
60 | wxCursor::wxCursor( int cursorId ) | |
61 | { | |
62 | m_refData = new wxCursorRefData(); | |
63 | ||
64 | GdkCursorType gdk_cur = GDK_LEFT_PTR; | |
65 | switch (cursorId) | |
66 | { | |
67 | case wxCURSOR_BLANK: | |
68 | { | |
69 | static const gchar bits[] = { 0 }; | |
70 | static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 }; | |
71 | ||
72 | GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1); | |
73 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap, | |
74 | pixmap, | |
75 | &color, | |
76 | &color, | |
77 | 0, 0); | |
78 | } | |
79 | return; | |
80 | ||
81 | case wxCURSOR_ARROW: // fall through to default | |
82 | case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break; | |
83 | case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break; | |
84 | case wxCURSOR_HAND: gdk_cur = GDK_HAND1; break; | |
85 | case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break; | |
86 | case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break; | |
87 | case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break; | |
88 | case wxCURSOR_ARROWWAIT: | |
89 | case wxCURSOR_WAIT: | |
90 | case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break; | |
91 | case wxCURSOR_SIZING: gdk_cur = GDK_SIZING; break; | |
92 | case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break; | |
93 | case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break; | |
94 | case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break; | |
95 | case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break; | |
96 | case wxCURSOR_SIZENWSE: | |
97 | case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break; | |
98 | case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break; | |
99 | case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break; | |
100 | case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break; | |
101 | case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break; | |
102 | case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break; | |
103 | case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break; | |
104 | case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break; | |
105 | case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break; | |
106 | ||
107 | case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break; | |
108 | case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break; | |
109 | /* | |
110 | case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break; | |
111 | case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break; | |
112 | case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break; | |
113 | case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break; | |
114 | */ | |
115 | ||
116 | default: | |
117 | wxFAIL_MSG(wxT("unsupported cursor type")); | |
118 | // will use the standard one | |
119 | break; | |
120 | } | |
121 | ||
122 | M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur ); | |
123 | } | |
124 | ||
125 | extern GtkWidget *wxGetRootWindow(); | |
126 | ||
127 | wxCursor::wxCursor(const char bits[], int width, int height, | |
128 | int hotSpotX, int hotSpotY, | |
129 | const char maskBits[], const wxColour *fg, const wxColour *bg) | |
130 | { | |
131 | if (!maskBits) | |
132 | maskBits = bits; | |
133 | if (!fg) | |
134 | fg = wxBLACK; | |
135 | if (!bg) | |
136 | bg = wxWHITE; | |
137 | if (hotSpotX < 0 || hotSpotX >= width) | |
138 | hotSpotX = 0; | |
139 | if (hotSpotY < 0 || hotSpotY >= height) | |
140 | hotSpotY = 0; | |
141 | ||
142 | GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height ); | |
143 | GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height); | |
144 | ||
145 | m_refData = new wxCursorRefData; | |
146 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap( | |
147 | data, mask, fg->GetColor(), bg->GetColor(), | |
148 | hotSpotX, hotSpotY ); | |
149 | ||
150 | g_object_unref (data); | |
151 | g_object_unref (mask); | |
152 | } | |
153 | ||
154 | #if wxUSE_IMAGE | |
155 | ||
156 | wxCursor::wxCursor( const wxImage & image ) | |
157 | { | |
158 | unsigned char * rgbBits = image.GetData(); | |
159 | int w = image.GetWidth() ; | |
160 | int h = image.GetHeight(); | |
161 | bool bHasMask = image.HasMask(); | |
162 | int imagebitcount = (w*h)/8; | |
163 | ||
164 | unsigned char * bits = new unsigned char [imagebitcount]; | |
165 | unsigned char * maskBits = new unsigned char [imagebitcount]; | |
166 | ||
167 | int i, j, i8; unsigned char c, cMask; | |
168 | for (i=0; i<imagebitcount; i++) | |
169 | { | |
170 | bits[i] = 0; | |
171 | i8 = i * 8; | |
172 | ||
173 | cMask = 1; | |
174 | for (j=0; j<8; j++) | |
175 | { | |
176 | // possible overflow if we do the summation first ? | |
177 | c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3; | |
178 | //if average value is > mid grey | |
179 | if (c>127) | |
180 | bits[i] = bits[i] | cMask; | |
181 | cMask = cMask * 2; | |
182 | } | |
183 | } | |
184 | ||
185 | unsigned long keyMaskColor; | |
186 | if (bHasMask) | |
187 | { | |
188 | unsigned char | |
189 | r = image.GetMaskRed(), | |
190 | g = image.GetMaskGreen(), | |
191 | b = image.GetMaskBlue(); | |
192 | ||
193 | for (i=0; i<imagebitcount; i++) | |
194 | { | |
195 | maskBits[i] = 0x0; | |
196 | i8 = i * 8; | |
197 | ||
198 | cMask = 1; | |
199 | for (j=0; j<8; j++) | |
200 | { | |
201 | if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b) | |
202 | maskBits[i] = maskBits[i] | cMask; | |
203 | cMask = cMask * 2; | |
204 | } | |
205 | } | |
206 | ||
207 | keyMaskColor = (r << 16) | (g << 8) | b; | |
208 | } | |
209 | else // no mask | |
210 | { | |
211 | for (i=0; i<imagebitcount; i++) | |
212 | maskBits[i] = 0xFF; | |
213 | ||
214 | // init it to avoid compiler warnings | |
215 | keyMaskColor = 0; | |
216 | } | |
217 | ||
218 | // find the most frequent color(s) | |
219 | wxImageHistogram histogram; | |
220 | image.ComputeHistogram(histogram); | |
221 | ||
222 | // colors as rrggbb | |
223 | unsigned long key; | |
224 | unsigned long value; | |
225 | ||
226 | long colMostFreq = 0; | |
227 | unsigned long nMost = 0; | |
228 | long colNextMostFreq = 0; | |
229 | unsigned long nNext = 0; | |
230 | for ( wxImageHistogram::iterator entry = histogram.begin(); | |
231 | entry != histogram.end(); | |
232 | ++entry ) | |
233 | { | |
234 | value = entry->second.value; | |
235 | key = entry->first; | |
236 | if ( !bHasMask || (key != keyMaskColor) ) | |
237 | { | |
238 | if (value > nMost) | |
239 | { | |
240 | nMost = value; | |
241 | colMostFreq = key; | |
242 | } | |
243 | else if (value > nNext) | |
244 | { | |
245 | nNext = value; | |
246 | colNextMostFreq = key; | |
247 | } | |
248 | } | |
249 | } | |
250 | ||
251 | wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16), | |
252 | (unsigned char)(colMostFreq >> 8), | |
253 | (unsigned char)(colMostFreq) ); | |
254 | ||
255 | wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16), | |
256 | (unsigned char)(colNextMostFreq >> 8), | |
257 | (unsigned char)(colNextMostFreq) ); | |
258 | ||
259 | int fg_intensity = fg.Red() + fg.Green() + fg.Blue(); | |
260 | int bg_intensity = bg.Red() + bg.Green() + bg.Blue(); | |
261 | ||
262 | if (bg_intensity > fg_intensity) | |
263 | { | |
264 | //swap fg and bg | |
265 | wxColour tmp = fg; | |
266 | fg = bg; | |
267 | bg = tmp; | |
268 | } | |
269 | ||
270 | int hotSpotX; | |
271 | int hotSpotY; | |
272 | ||
273 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X)) | |
274 | hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X); | |
275 | else | |
276 | hotSpotX = 0; | |
277 | ||
278 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y)) | |
279 | hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y); | |
280 | else | |
281 | hotSpotY = 0; | |
282 | ||
283 | if (hotSpotX < 0 || hotSpotX >= w) | |
284 | hotSpotX = 0; | |
285 | if (hotSpotY < 0 || hotSpotY >= h) | |
286 | hotSpotY = 0; | |
287 | ||
288 | GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window, | |
289 | (gchar *) bits, w, h); | |
290 | GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window, | |
291 | (gchar *) maskBits, w, h); | |
292 | ||
293 | m_refData = new wxCursorRefData; | |
294 | M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap | |
295 | ( | |
296 | data, | |
297 | mask, | |
298 | fg.GetColor(), bg.GetColor(), | |
299 | hotSpotX, hotSpotY | |
300 | ); | |
301 | ||
302 | g_object_unref (data); | |
303 | g_object_unref (mask); | |
304 | delete [] bits; | |
305 | delete [] maskBits; | |
306 | } | |
307 | ||
308 | #endif // wxUSE_IMAGE | |
309 | ||
310 | wxCursor::~wxCursor() | |
311 | { | |
312 | } | |
313 | ||
314 | bool wxCursor::operator == ( const wxCursor& cursor ) const | |
315 | { | |
316 | return m_refData == cursor.m_refData; | |
317 | } | |
318 | ||
319 | bool wxCursor::operator != ( const wxCursor& cursor ) const | |
320 | { | |
321 | return m_refData != cursor.m_refData; | |
322 | } | |
323 | ||
324 | bool wxCursor::Ok() const | |
325 | { | |
326 | return (m_refData != NULL); | |
327 | } | |
328 | ||
329 | GdkCursor *wxCursor::GetCursor() const | |
330 | { | |
331 | return M_CURSORDATA->m_cursor; | |
332 | } | |
333 | ||
334 | //----------------------------------------------------------------------------- | |
335 | // busy cursor routines | |
336 | //----------------------------------------------------------------------------- | |
337 | ||
338 | extern wxCursor g_globalCursor; | |
339 | ||
340 | static wxCursor gs_savedCursor; | |
341 | static int gs_busyCount = 0; | |
342 | ||
343 | const wxCursor &wxBusyCursor::GetStoredCursor() | |
344 | { | |
345 | return gs_savedCursor; | |
346 | } | |
347 | ||
348 | const wxCursor wxBusyCursor::GetBusyCursor() | |
349 | { | |
350 | return wxCursor(wxCURSOR_WATCH); | |
351 | } | |
352 | ||
353 | void wxEndBusyCursor() | |
354 | { | |
355 | if (--gs_busyCount > 0) | |
356 | return; | |
357 | ||
358 | wxSetCursor( gs_savedCursor ); | |
359 | gs_savedCursor = wxNullCursor; | |
360 | ||
361 | if (wxTheApp) | |
362 | wxTheApp->ProcessIdle(); | |
363 | } | |
364 | ||
365 | void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) ) | |
366 | { | |
367 | if (gs_busyCount++ > 0) | |
368 | return; | |
369 | ||
370 | wxASSERT_MSG( !gs_savedCursor.Ok(), | |
371 | wxT("forgot to call wxEndBusyCursor, will leak memory") ); | |
372 | ||
373 | gs_savedCursor = g_globalCursor; | |
374 | ||
375 | wxSetCursor( wxCursor(wxCURSOR_WATCH) ); | |
376 | ||
377 | if (wxTheApp) | |
378 | wxTheApp->ProcessIdle(); | |
379 | ||
380 | gdk_flush(); | |
381 | } | |
382 | ||
383 | bool wxIsBusy() | |
384 | { | |
385 | return gs_busyCount > 0; | |
386 | } | |
387 | ||
388 | void wxSetCursor( const wxCursor& cursor ) | |
389 | { | |
390 | if (g_isIdle) | |
391 | wxapp_install_idle_handler(); | |
392 | ||
393 | g_globalCursor = cursor; | |
394 | } |