1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk1/cursor.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // Id: $Id: cursor.cpp 42752 2006-10-30 19:26:48Z VZ $
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 <gdk/gdk.h>
21 #include <gtk/gtk.h>
22
23 //-----------------------------------------------------------------------------
24 // idle system
25 //-----------------------------------------------------------------------------
26
27 extern void wxapp_install_idle_handler();
28 extern bool g_isIdle;
29
30 //-----------------------------------------------------------------------------
31 // wxCursor
32 //-----------------------------------------------------------------------------
33
34 class wxCursorRefData: public wxObjectRefData
35 {
36 public:
37
38 wxCursorRefData();
39 virtual ~wxCursorRefData();
40
41 GdkCursor *m_cursor;
42 };
43
wxCursorRefData()44 wxCursorRefData::wxCursorRefData()
45 {
46 m_cursor = (GdkCursor *) NULL;
47 }
48
~wxCursorRefData()49 wxCursorRefData::~wxCursorRefData()
50 {
51 if (m_cursor) gdk_cursor_destroy( m_cursor );
52 }
53
54 //-----------------------------------------------------------------------------
55
56 #define M_CURSORDATA ((wxCursorRefData *)m_refData)
57
IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)58 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
59
60 wxCursor::wxCursor()
61 {
62
63 }
64
wxCursor(int cursorId)65 wxCursor::wxCursor( int cursorId )
66 {
67 m_refData = new wxCursorRefData();
68
69 GdkCursorType gdk_cur = GDK_LEFT_PTR;
70 switch (cursorId)
71 {
72 case wxCURSOR_BLANK:
73 {
74 static const gchar bits[] = { 0 };
75 static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 };
76
77 GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
78 M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap,
79 pixmap,
80 &color,
81 &color,
82 0, 0);
83 }
84 return;
85
86 case wxCURSOR_ARROW: // fall through to default
87 case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break;
88 case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break;
89 case wxCURSOR_HAND: gdk_cur = GDK_HAND1; break;
90 case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break;
91 case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
92 case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
93 case wxCURSOR_ARROWWAIT:
94 case wxCURSOR_WAIT:
95 case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break;
96 case wxCURSOR_SIZING: gdk_cur = GDK_SIZING; break;
97 case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break;
98 case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break;
99 case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break;
100 case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break;
101 case wxCURSOR_SIZENWSE:
102 case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break;
103 case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break;
104 case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break;
105 case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break;
106 case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break;
107 case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break;
108 case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break;
109 case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break;
110 case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break;
111
112 case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break;
113 case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break;
114 /*
115 case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break;
116 case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break;
117 case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break;
118 case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
119 */
120
121 default:
122 wxFAIL_MSG(wxT("unsupported cursor type"));
123 // will use the standard one
124 break;
125 }
126
127 M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
128 }
129
130 extern GtkWidget *wxGetRootWindow();
131
wxCursor(const char bits[],int width,int height,int hotSpotX,int hotSpotY,const char maskBits[],const wxColour * fg,const wxColour * bg)132 wxCursor::wxCursor(const char bits[], int width, int height,
133 int hotSpotX, int hotSpotY,
134 const char maskBits[], const wxColour *fg, const wxColour *bg)
135 {
136 if (!maskBits)
137 maskBits = bits;
138 if (!fg)
139 fg = wxBLACK;
140 if (!bg)
141 bg = wxWHITE;
142 if (hotSpotX < 0 || hotSpotX >= width)
143 hotSpotX = 0;
144 if (hotSpotY < 0 || hotSpotY >= height)
145 hotSpotY = 0;
146
147 GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
148 GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height);
149
150 m_refData = new wxCursorRefData;
151 M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
152 data, mask, fg->GetColor(), bg->GetColor(),
153 hotSpotX, hotSpotY );
154
155 gdk_bitmap_unref( data );
156 gdk_bitmap_unref( mask );
157 }
158
159 #if wxUSE_IMAGE
160
wxCursor(const wxImage & image)161 wxCursor::wxCursor( const wxImage & image )
162 {
163 unsigned char * rgbBits = image.GetData();
164 int w = image.GetWidth() ;
165 int h = image.GetHeight();
166 bool bHasMask = image.HasMask();
167 int imagebitcount = (w*h)/8;
168
169 unsigned char * bits = new unsigned char [imagebitcount];
170 unsigned char * maskBits = new unsigned char [imagebitcount];
171
172 int i, j, i8; unsigned char c, cMask;
173 for (i=0; i<imagebitcount; i++)
174 {
175 bits[i] = 0;
176 i8 = i * 8;
177
178 cMask = 1;
179 for (j=0; j<8; j++)
180 {
181 // possible overflow if we do the summation first ?
182 c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3;
183 //if average value is > mid grey
184 if (c>127)
185 bits[i] = bits[i] | cMask;
186 cMask = cMask * 2;
187 }
188 }
189
190 unsigned long keyMaskColor;
191 if (bHasMask)
192 {
193 unsigned char
194 r = image.GetMaskRed(),
195 g = image.GetMaskGreen(),
196 b = image.GetMaskBlue();
197
198 for (i=0; i<imagebitcount; i++)
199 {
200 maskBits[i] = 0x0;
201 i8 = i * 8;
202
203 cMask = 1;
204 for (j=0; j<8; j++)
205 {
206 if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b)
207 maskBits[i] = maskBits[i] | cMask;
208 cMask = cMask * 2;
209 }
210 }
211
212 keyMaskColor = (r << 16) | (g << 8) | b;
213 }
214 else // no mask
215 {
216 for (i=0; i<imagebitcount; i++)
217 maskBits[i] = 0xFF;
218
219 // init it to avoid compiler warnings
220 keyMaskColor = 0;
221 }
222
223 // find the most frequent color(s)
224 wxImageHistogram histogram;
225 image.ComputeHistogram(histogram);
226
227 // colors as rrggbb
228 unsigned long key;
229 unsigned long value;
230
231 long colMostFreq = 0;
232 unsigned long nMost = 0;
233 long colNextMostFreq = 0;
234 unsigned long nNext = 0;
235 for ( wxImageHistogram::iterator entry = histogram.begin();
236 entry != histogram.end();
237 ++entry )
238 {
239 value = entry->second.value;
240 key = entry->first;
241 if ( !bHasMask || (key != keyMaskColor) )
242 {
243 if (value > nMost)
244 {
245 nMost = value;
246 colMostFreq = key;
247 }
248 else if (value > nNext)
249 {
250 nNext = value;
251 colNextMostFreq = key;
252 }
253 }
254 }
255
256 wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
257 (unsigned char)(colMostFreq >> 8),
258 (unsigned char)(colMostFreq) );
259
260 wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
261 (unsigned char)(colNextMostFreq >> 8),
262 (unsigned char)(colNextMostFreq) );
263
264 int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
265 int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
266
267 if (bg_intensity > fg_intensity)
268 {
269 //swap fg and bg
270 wxColour tmp = fg;
271 fg = bg;
272 bg = tmp;
273 }
274
275 int hotSpotX;
276 int hotSpotY;
277
278 if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
279 hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
280 else
281 hotSpotX = 0;
282
283 if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
284 hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
285 else
286 hotSpotY = 0;
287
288 if (hotSpotX < 0 || hotSpotX >= w)
289 hotSpotX = 0;
290 if (hotSpotY < 0 || hotSpotY >= h)
291 hotSpotY = 0;
292
293 GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
294 (gchar *) bits, w, h);
295 GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
296 (gchar *) maskBits, w, h);
297
298 m_refData = new wxCursorRefData;
299 M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
300 (
301 data,
302 mask,
303 fg.GetColor(), bg.GetColor(),
304 hotSpotX, hotSpotY
305 );
306
307 gdk_bitmap_unref( data );
308 gdk_bitmap_unref( mask );
309 delete [] bits;
310 delete [] maskBits;
311 }
312
313 #endif // wxUSE_IMAGE
314
~wxCursor()315 wxCursor::~wxCursor()
316 {
317 }
318
IsOk() const319 bool wxCursor::IsOk() const
320 {
321 return (m_refData != NULL);
322 }
323
GetCursor() const324 GdkCursor *wxCursor::GetCursor() const
325 {
326 return M_CURSORDATA->m_cursor;
327 }
328
329 //-----------------------------------------------------------------------------
330 // busy cursor routines
331 //-----------------------------------------------------------------------------
332
333 extern wxCursor g_globalCursor;
334
335 static wxCursor gs_savedCursor;
336 static int gs_busyCount = 0;
337
GetStoredCursor()338 const wxCursor &wxBusyCursor::GetStoredCursor()
339 {
340 return gs_savedCursor;
341 }
342
GetBusyCursor()343 const wxCursor wxBusyCursor::GetBusyCursor()
344 {
345 return wxCursor(wxCURSOR_WATCH);
346 }
347
wxEndBusyCursor()348 void wxEndBusyCursor()
349 {
350 if (--gs_busyCount > 0)
351 return;
352
353 wxSetCursor( gs_savedCursor );
354 gs_savedCursor = wxNullCursor;
355
356 if (wxTheApp)
357 wxTheApp->ProcessIdle();
358 }
359
wxBeginBusyCursor(const wxCursor * WXUNUSED (cursor))360 void wxBeginBusyCursor( const wxCursor *WXUNUSED(cursor) )
361 {
362 if (gs_busyCount++ > 0)
363 return;
364
365 wxASSERT_MSG( !gs_savedCursor.Ok(),
366 wxT("forgot to call wxEndBusyCursor, will leak memory") );
367
368 gs_savedCursor = g_globalCursor;
369
370 wxSetCursor( wxCursor(wxCURSOR_WATCH) );
371
372 if (wxTheApp)
373 wxTheApp->ProcessIdle();
374
375 gdk_flush();
376 }
377
wxIsBusy()378 bool wxIsBusy()
379 {
380 return gs_busyCount > 0;
381 }
382
wxSetCursor(const wxCursor & cursor)383 void wxSetCursor( const wxCursor& cursor )
384 {
385 if (g_isIdle)
386 wxapp_install_idle_handler();
387
388 g_globalCursor = cursor;
389 }
390