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1/////////////////////////////////////////////////////////////////////////////
2// Name: 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#include "wx/utils.h"
15#include "wx/app.h"
16
17#include <gdk/gdk.h>
18#include <gtk/gtk.h>
19
20//-----------------------------------------------------------------------------
21// idle system
22//-----------------------------------------------------------------------------
23
24extern void wxapp_install_idle_handler();
25extern bool g_isIdle;
26
27//-----------------------------------------------------------------------------
28// wxCursor
29//-----------------------------------------------------------------------------
30
31class wxCursorRefData: public wxObjectRefData
32{
33 public:
34
35 wxCursorRefData();
36 ~wxCursorRefData();
37
38 GdkCursor *m_cursor;
39};
40
41wxCursorRefData::wxCursorRefData()
42{
43 m_cursor = (GdkCursor *) NULL;
44}
45
46wxCursorRefData::~wxCursorRefData()
47{
48 if (m_cursor) gdk_cursor_destroy( m_cursor );
49}
50
51//-----------------------------------------------------------------------------
52
53#define M_CURSORDATA ((wxCursorRefData *)m_refData)
54
55IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
56
57wxCursor::wxCursor()
58{
59
60}
61
62wxCursor::wxCursor( int cursorId )
63{
64 m_refData = new wxCursorRefData();
65
66 GdkCursorType gdk_cur = GDK_LEFT_PTR;
67 switch (cursorId)
68 {
69 case wxCURSOR_BLANK:
70 {
71 static const gchar bits[] = { 0 };
72 static /* const -- not in GTK1 */ GdkColor color = { 0, 0, 0, 0 };
73
74 GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
75 M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(pixmap,
76 pixmap,
77 &color,
78 &color,
79 0, 0);
80 }
81 return;
82
83 case wxCURSOR_ARROW: // fall through to default
84 case wxCURSOR_DEFAULT: gdk_cur = GDK_LEFT_PTR; break;
85 case wxCURSOR_RIGHT_ARROW: gdk_cur = GDK_RIGHT_PTR; break;
86 case wxCURSOR_HAND: gdk_cur = GDK_HAND1; break;
87 case wxCURSOR_CROSS: gdk_cur = GDK_CROSSHAIR; break;
88 case wxCURSOR_SIZEWE: gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
89 case wxCURSOR_SIZENS: gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
90 case wxCURSOR_ARROWWAIT:
91 case wxCURSOR_WAIT:
92 case wxCURSOR_WATCH: gdk_cur = GDK_WATCH; break;
93 case wxCURSOR_SIZING: gdk_cur = GDK_SIZING; break;
94 case wxCURSOR_SPRAYCAN: gdk_cur = GDK_SPRAYCAN; break;
95 case wxCURSOR_IBEAM: gdk_cur = GDK_XTERM; break;
96 case wxCURSOR_PENCIL: gdk_cur = GDK_PENCIL; break;
97 case wxCURSOR_NO_ENTRY: gdk_cur = GDK_PIRATE; break;
98 case wxCURSOR_SIZENWSE:
99 case wxCURSOR_SIZENESW: gdk_cur = GDK_FLEUR; break;
100 case wxCURSOR_QUESTION_ARROW: gdk_cur = GDK_QUESTION_ARROW; break;
101 case wxCURSOR_PAINT_BRUSH: gdk_cur = GDK_SPRAYCAN; break;
102 case wxCURSOR_MAGNIFIER: gdk_cur = GDK_PLUS; break;
103 case wxCURSOR_CHAR: gdk_cur = GDK_XTERM; break;
104 case wxCURSOR_LEFT_BUTTON: gdk_cur = GDK_LEFTBUTTON; break;
105 case wxCURSOR_MIDDLE_BUTTON: gdk_cur = GDK_MIDDLEBUTTON; break;
106 case wxCURSOR_RIGHT_BUTTON: gdk_cur = GDK_RIGHTBUTTON; break;
107 case wxCURSOR_BULLSEYE: gdk_cur = GDK_TARGET; break;
108
109 case wxCURSOR_POINT_LEFT: gdk_cur = GDK_SB_LEFT_ARROW; break;
110 case wxCURSOR_POINT_RIGHT: gdk_cur = GDK_SB_RIGHT_ARROW; break;
111/*
112 case wxCURSOR_DOUBLE_ARROW: gdk_cur = GDK_DOUBLE_ARROW; break;
113 case wxCURSOR_CROSS_REVERSE: gdk_cur = GDK_CROSS_REVERSE; break;
114 case wxCURSOR_BASED_ARROW_UP: gdk_cur = GDK_BASED_ARROW_UP; break;
115 case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
116*/
117
118 default:
119 wxFAIL_MSG(wxT("unsupported cursor type"));
120 // will use the standard one
121 break;
122 }
123
124 M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
125}
126
127extern GtkWidget *wxGetRootWindow();
128
129wxCursor::wxCursor(const char bits[], int width, int height,
130 int hotSpotX, int hotSpotY,
131 const char maskBits[], wxColour *fg, wxColour *bg)
132{
133 if (!maskBits)
134 maskBits = bits;
135 if (!fg)
136 fg = wxBLACK;
137 if (!bg)
138 bg = wxWHITE;
139 if (hotSpotX < 0 || hotSpotX >= width)
140 hotSpotX = 0;
141 if (hotSpotY < 0 || hotSpotY >= height)
142 hotSpotY = 0;
143
144 GdkBitmap *data = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) bits, width, height );
145 GdkBitmap *mask = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) maskBits, width, height);
146
147 m_refData = new wxCursorRefData;
148 M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
149 data, mask, fg->GetColor(), bg->GetColor(),
150 hotSpotX, hotSpotY );
151
152 gdk_bitmap_unref( data );
153 gdk_bitmap_unref( mask );
154}
155
156
157wxCursor::wxCursor( const wxCursor &cursor )
158 : wxObject()
159{
160 Ref( cursor );
161}
162
163#if wxUSE_IMAGE
164
165wxCursor::wxCursor( const wxImage & image )
166{
167 unsigned char * rgbBits = image.GetData();
168 int w = image.GetWidth() ;
169 int h = image.GetHeight();
170 bool bHasMask = image.HasMask();
171 int imagebitcount = (w*h)/8;
172
173 unsigned char * bits = new unsigned char [imagebitcount];
174 unsigned char * maskBits = new unsigned char [imagebitcount];
175
176 int i, j, i8; unsigned char c, cMask;
177 for (i=0; i<imagebitcount; i++)
178 {
179 bits[i] = 0;
180 i8 = i * 8;
181
182 cMask = 1;
183 for (j=0; j<8; j++)
184 {
185 // possible overflow if we do the summation first ?
186 c = rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3;
187 //if average value is > mid grey
188 if (c>127)
189 bits[i] = bits[i] | cMask;
190 cMask = cMask * 2;
191 }
192 }
193
194 unsigned long keyMaskColor;
195 if (bHasMask)
196 {
197 unsigned char
198 r = image.GetMaskRed(),
199 g = image.GetMaskGreen(),
200 b = image.GetMaskBlue();
201
202 for (i=0; i<imagebitcount; i++)
203 {
204 maskBits[i] = 0x0;
205 i8 = i * 8;
206
207 cMask = 1;
208 for (j=0; j<8; j++)
209 {
210 if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b)
211 maskBits[i] = maskBits[i] | cMask;
212 cMask = cMask * 2;
213 }
214 }
215
216 keyMaskColor = (r << 16) | (g << 8) | b;
217 }
218 else // no mask
219 {
220 for (i=0; i<imagebitcount; i++)
221 maskBits[i] = 0xFF;
222
223 // init it to avoid compiler warnings
224 keyMaskColor = 0;
225 }
226
227 // find the most frequent color(s)
228 wxImageHistogram histogram;
229 image.ComputeHistogram(histogram);
230
231 // colors as rrggbb
232 unsigned long key;
233 unsigned long value;
234
235 long colMostFreq = 0;
236 unsigned long nMost = 0;
237 long colNextMostFreq = 0;
238 unsigned long nNext = 0;
239 for ( wxImageHistogram::iterator entry = histogram.begin();
240 entry != histogram.end();
241 ++entry )
242 {
243 value = entry->second.value;
244 key = entry->first;
245 if ( !bHasMask || (key != keyMaskColor) )
246 {
247 if (value > nMost)
248 {
249 nMost = value;
250 colMostFreq = key;
251 }
252 else if (value > nNext)
253 {
254 nNext = value;
255 colNextMostFreq = key;
256 }
257 }
258 }
259
260 wxColour fg = wxColour ( (unsigned char)(colMostFreq >> 16),
261 (unsigned char)(colMostFreq >> 8),
262 (unsigned char)(colMostFreq) );
263
264 wxColour bg = wxColour ( (unsigned char)(colNextMostFreq >> 16),
265 (unsigned char)(colNextMostFreq >> 8),
266 (unsigned char)(colNextMostFreq) );
267
268 int fg_intensity = fg.Red() + fg.Green() + fg.Blue();
269 int bg_intensity = bg.Red() + bg.Green() + bg.Blue();
270
271 if (bg_intensity > fg_intensity)
272 {
273 //swap fg and bg
274 wxColour tmp = fg;
275 fg = bg;
276 bg = tmp;
277 }
278
279 int hotSpotX;
280 int hotSpotY;
281
282 if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X))
283 hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X);
284 else
285 hotSpotX = 0;
286
287 if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y))
288 hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y);
289 else
290 hotSpotY = 0;
291
292 if (hotSpotX < 0 || hotSpotX >= w)
293 hotSpotX = 0;
294 if (hotSpotY < 0 || hotSpotY >= h)
295 hotSpotY = 0;
296
297 GdkBitmap *data = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
298 (gchar *) bits, w, h);
299 GdkBitmap *mask = gdk_bitmap_create_from_data(wxGetRootWindow()->window,
300 (gchar *) maskBits, w, h);
301
302 m_refData = new wxCursorRefData;
303 M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap
304 (
305 data,
306 mask,
307 fg.GetColor(), bg.GetColor(),
308 hotSpotX, hotSpotY
309 );
310
311 gdk_bitmap_unref( data );
312 gdk_bitmap_unref( mask );
313 delete [] bits;
314 delete [] maskBits;
315}
316
317#endif // wxUSE_IMAGE
318
319wxCursor::~wxCursor()
320{
321}
322
323wxCursor& wxCursor::operator = ( const wxCursor& cursor )
324{
325 if (*this == cursor)
326 return (*this);
327
328 Ref( cursor );
329
330 return *this;
331}
332
333bool wxCursor::operator == ( const wxCursor& cursor ) const
334{
335 return m_refData == cursor.m_refData;
336}
337
338bool wxCursor::operator != ( const wxCursor& cursor ) const
339{
340 return m_refData != cursor.m_refData;
341}
342
343bool wxCursor::Ok() const
344{
345 return (m_refData != NULL);
346}
347
348GdkCursor *wxCursor::GetCursor() const
349{
350 return M_CURSORDATA->m_cursor;
351}
352
353//-----------------------------------------------------------------------------
354// busy cursor routines
355//-----------------------------------------------------------------------------
356
357extern wxCursor g_globalCursor;
358
359static wxCursor gs_savedCursor;
360static int gs_busyCount = 0;
361
362const wxCursor &wxBusyCursor::GetStoredCursor()
363{
364 return gs_savedCursor;
365}
366
367const wxCursor wxBusyCursor::GetBusyCursor()
368{
369 return wxCursor(wxCURSOR_WATCH);
370}
371
372void wxEndBusyCursor()
373{
374 if (--gs_busyCount > 0)
375 return;
376
377 wxSetCursor( gs_savedCursor );
378 gs_savedCursor = wxNullCursor;
379
380 if (wxTheApp)
381 wxTheApp->ProcessIdle();
382}
383
384void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
385{
386 if (gs_busyCount++ > 0)
387 return;
388
389 wxASSERT_MSG( !gs_savedCursor.Ok(),
390 wxT("forgot to call wxEndBusyCursor, will leak memory") );
391
392 gs_savedCursor = g_globalCursor;
393
394 wxSetCursor( wxCursor(wxCURSOR_WATCH) );
395
396 if (wxTheApp)
397 wxTheApp->ProcessIdle();
398
399 gdk_flush();
400}
401
402bool wxIsBusy()
403{
404 return gs_busyCount > 0;
405}
406
407void wxSetCursor( const wxCursor& cursor )
408{
409 if (g_isIdle)
410 wxapp_install_idle_handler();
411
412 g_globalCursor = cursor;
413}