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[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XCopyPlane XCOPYPLANE
15 #endif
16
17 #include "wx/dcclient.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/window.h"
21 #include "wx/log.h"
22 #include "wx/dcmemory.h"
23 #include "wx/math.h" // for floating-point functions
24 #include "wx/image.h"
25 #include "wx/module.h"
26 #endif
27
28 #include "wx/fontutil.h"
29 #include "wx/scrolwin.h"
30
31 #include "wx/gtk/win_gtk.h"
32 #include "wx/gtk/private.h"
33
34 #include <gdk/gdkx.h>
35
36 //-----------------------------------------------------------------------------
37 // local defines
38 //-----------------------------------------------------------------------------
39
40 #define USE_PAINT_REGION 1
41
42 //-----------------------------------------------------------------------------
43 // local data
44 //-----------------------------------------------------------------------------
45
46 #include "bdiag.xbm"
47 #include "fdiag.xbm"
48 #include "cdiag.xbm"
49 #include "horiz.xbm"
50 #include "verti.xbm"
51 #include "cross.xbm"
52 #define num_hatches 6
53
54 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
55 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
56
57
58 static GdkPixmap *hatches[num_hatches];
59 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
60
61 extern GtkWidget *wxGetRootWindow();
62
63 //-----------------------------------------------------------------------------
64 // constants
65 //-----------------------------------------------------------------------------
66
67 const double RAD2DEG = 180.0 / M_PI;
68
69 // ----------------------------------------------------------------------------
70 // private functions
71 // ----------------------------------------------------------------------------
72
73 static inline double dmax(double a, double b) { return a > b ? a : b; }
74 static inline double dmin(double a, double b) { return a < b ? a : b; }
75
76 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
77
78 //-----------------------------------------------------------------------------
79 // temporary implementation of the missing GDK function
80 //-----------------------------------------------------------------------------
81
82 #include "gdk/gdkprivate.h"
83
84 static
85 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94 {
95 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
96 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
98
99 gint src_width, src_height;
100 gdk_drawable_get_size(src, &src_width, &src_height);
101 if (width == -1) width = src_width;
102 if (height == -1) height = src_height;
103
104 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
105 GDK_WINDOW_XID(src),
106 GDK_WINDOW_XID(drawable),
107 GDK_GC_XGC(gc),
108 xsrc, ysrc,
109 width, height,
110 0, 0,
111 1 );
112 }
113
114 //-----------------------------------------------------------------------------
115 // Implement Pool of Graphic contexts. Creating them takes too much time.
116 //-----------------------------------------------------------------------------
117
118 enum wxPoolGCType
119 {
120 wxGC_ERROR = 0,
121 wxTEXT_MONO,
122 wxBG_MONO,
123 wxPEN_MONO,
124 wxBRUSH_MONO,
125 wxTEXT_COLOUR,
126 wxBG_COLOUR,
127 wxPEN_COLOUR,
128 wxBRUSH_COLOUR,
129 wxTEXT_SCREEN,
130 wxBG_SCREEN,
131 wxPEN_SCREEN,
132 wxBRUSH_SCREEN
133 };
134
135 struct wxGC
136 {
137 GdkGC *m_gc;
138 wxPoolGCType m_type;
139 bool m_used;
140 };
141
142 #define GC_POOL_ALLOC_SIZE 100
143
144 static int wxGCPoolSize = 0;
145
146 static wxGC *wxGCPool = NULL;
147
148 static void wxInitGCPool()
149 {
150 // This really could wait until the first call to
151 // wxGetPoolGC, but we will make the first allocation
152 // now when other initialization is being performed.
153
154 // Set initial pool size.
155 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
156
157 // Allocate initial pool.
158 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
159 if (wxGCPool == NULL)
160 {
161 // If we cannot malloc, then fail with error
162 // when debug is enabled. If debug is not enabled,
163 // the problem will eventually get caught
164 // in wxGetPoolGC.
165 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
166 return;
167 }
168
169 // Zero initial pool.
170 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
171 }
172
173 static void wxCleanUpGCPool()
174 {
175 for (int i = 0; i < wxGCPoolSize; i++)
176 {
177 if (wxGCPool[i].m_gc)
178 g_object_unref (wxGCPool[i].m_gc);
179 }
180
181 free(wxGCPool);
182 wxGCPool = NULL;
183 wxGCPoolSize = 0;
184 }
185
186 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
187 {
188 wxGC *pptr;
189
190 // Look for an available GC.
191 for (int i = 0; i < wxGCPoolSize; i++)
192 {
193 if (!wxGCPool[i].m_gc)
194 {
195 wxGCPool[i].m_gc = gdk_gc_new( window );
196 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
197 wxGCPool[i].m_type = type;
198 wxGCPool[i].m_used = false;
199 }
200 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
201 {
202 wxGCPool[i].m_used = true;
203 return wxGCPool[i].m_gc;
204 }
205 }
206
207 // We did not find an available GC.
208 // We need to grow the GC pool.
209 pptr = (wxGC *)realloc(wxGCPool,
210 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
211 if (pptr != NULL)
212 {
213 // Initialize newly allocated pool.
214 wxGCPool = pptr;
215 memset(&wxGCPool[wxGCPoolSize], 0,
216 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
217
218 // Initialize entry we will return.
219 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
220 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
221 wxGCPool[wxGCPoolSize].m_type = type;
222 wxGCPool[wxGCPoolSize].m_used = true;
223
224 // Set new value of pool size.
225 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
226
227 // Return newly allocated entry.
228 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
229 }
230
231 // The realloc failed. Fall through to error.
232 wxFAIL_MSG( wxT("No GC available") );
233
234 return (GdkGC*) NULL;
235 }
236
237 static void wxFreePoolGC( GdkGC *gc )
238 {
239 for (int i = 0; i < wxGCPoolSize; i++)
240 {
241 if (wxGCPool[i].m_gc == gc)
242 {
243 wxGCPool[i].m_used = false;
244 return;
245 }
246 }
247
248 wxFAIL_MSG( wxT("Wrong GC") );
249 }
250
251 //-----------------------------------------------------------------------------
252 // wxWindowDC
253 //-----------------------------------------------------------------------------
254
255 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
256
257 wxWindowDC::wxWindowDC()
258 {
259 m_penGC = (GdkGC *) NULL;
260 m_brushGC = (GdkGC *) NULL;
261 m_textGC = (GdkGC *) NULL;
262 m_bgGC = (GdkGC *) NULL;
263 m_cmap = (GdkColormap *) NULL;
264 m_isMemDC = false;
265 m_isScreenDC = false;
266 m_owner = (wxWindow *)NULL;
267 m_context = (PangoContext *)NULL;
268 m_layout = (PangoLayout *)NULL;
269 m_fontdesc = (PangoFontDescription *)NULL;
270 }
271
272 wxWindowDC::wxWindowDC( wxWindow *window )
273 {
274 wxASSERT_MSG( window, wxT("DC needs a window") );
275
276 m_penGC = (GdkGC *) NULL;
277 m_brushGC = (GdkGC *) NULL;
278 m_textGC = (GdkGC *) NULL;
279 m_bgGC = (GdkGC *) NULL;
280 m_cmap = (GdkColormap *) NULL;
281 m_owner = (wxWindow *)NULL;
282 m_isMemDC = false;
283 m_isScreenDC = false;
284 m_font = window->GetFont();
285
286 GtkWidget *widget = window->m_wxwindow;
287
288 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
289 // code should still be able to create wxClientDCs for them, so we will
290 // use the parent window here then.
291 if ( !widget )
292 {
293 window = window->GetParent();
294 widget = window->m_wxwindow;
295 }
296
297 wxASSERT_MSG( widget, wxT("DC needs a widget") );
298
299 m_context = window->GtkGetPangoDefaultContext();
300 m_layout = pango_layout_new( m_context );
301 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
302
303 GtkPizza *pizza = GTK_PIZZA( widget );
304 m_window = pizza->bin_window;
305
306 // Window not realized ?
307 if (!m_window)
308 {
309 // Don't report problems as per MSW.
310 m_ok = true;
311
312 return;
313 }
314
315 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
316
317 SetUpDC();
318
319 /* this must be done after SetUpDC, bacause SetUpDC calls the
320 repective SetBrush, SetPen, SetBackground etc functions
321 to set up the DC. SetBackground call m_owner->SetBackground
322 and this might not be desired as the standard dc background
323 is white whereas a window might assume gray to be the
324 standard (as e.g. wxStatusBar) */
325
326 m_owner = window;
327
328 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
329 {
330 // reverse sense
331 m_signX = -1;
332
333 // origin in the upper right corner
334 m_deviceOriginX = m_owner->GetClientSize().x;
335 }
336 }
337
338 wxWindowDC::~wxWindowDC()
339 {
340 Destroy();
341
342 if (m_layout)
343 g_object_unref (m_layout);
344 if (m_fontdesc)
345 pango_font_description_free( m_fontdesc );
346 }
347
348 void wxWindowDC::SetUpDC()
349 {
350 m_ok = true;
351
352 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
353
354 if (m_isScreenDC)
355 {
356 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
357 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
358 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
359 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
360 }
361 else
362 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
363 {
364 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
365 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
366 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
367 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
368 }
369 else
370 {
371 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
372 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
373 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
374 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
375 }
376
377 /* background colour */
378 m_backgroundBrush = *wxWHITE_BRUSH;
379 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
380 #ifdef __WXGTK24__
381 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
382 #else
383 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
384 #endif
385
386 /* m_textGC */
387 m_textForegroundColour.CalcPixel( m_cmap );
388 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
389
390 m_textBackgroundColour.CalcPixel( m_cmap );
391 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
392
393 gdk_gc_set_fill( m_textGC, GDK_SOLID );
394
395 /* m_penGC */
396 m_pen.GetColour().CalcPixel( m_cmap );
397 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
398 gdk_gc_set_background( m_penGC, bg_col );
399
400 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
401
402 /* m_brushGC */
403 m_brush.GetColour().CalcPixel( m_cmap );
404 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
405 gdk_gc_set_background( m_brushGC, bg_col );
406
407 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
408
409 /* m_bgGC */
410 gdk_gc_set_background( m_bgGC, bg_col );
411 gdk_gc_set_foreground( m_bgGC, bg_col );
412
413 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
414
415 /* ROPs */
416 gdk_gc_set_function( m_textGC, GDK_COPY );
417 gdk_gc_set_function( m_brushGC, GDK_COPY );
418 gdk_gc_set_function( m_penGC, GDK_COPY );
419
420 /* clipping */
421 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
422 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
423 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
424 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
425
426 if (!hatch_bitmap)
427 {
428 hatch_bitmap = hatches;
429 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
430 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
431 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
432 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
433 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
434 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
435 }
436 }
437
438 void wxWindowDC::DoGetSize( int* width, int* height ) const
439 {
440 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
441
442 m_owner->GetSize(width, height);
443 }
444
445 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
446 const wxColour & col, int style);
447
448 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
449 const wxColour& col, int style)
450 {
451 return wxDoFloodFill(this, x, y, col, style);
452 }
453
454 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
455 {
456 // Generic (and therefore rather inefficient) method.
457 // Could be improved.
458 wxMemoryDC memdc;
459 wxBitmap bitmap(1, 1);
460 memdc.SelectObject(bitmap);
461 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
462 memdc.SelectObject(wxNullBitmap);
463
464 wxImage image = bitmap.ConvertToImage();
465 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
466 return true;
467 }
468
469 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
470 {
471 wxCHECK_RET( Ok(), wxT("invalid window dc") );
472
473 if (m_pen.GetStyle() != wxTRANSPARENT)
474 {
475 if (m_window)
476 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
477
478 CalcBoundingBox(x1, y1);
479 CalcBoundingBox(x2, y2);
480 }
481 }
482
483 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
484 {
485 wxCHECK_RET( Ok(), wxT("invalid window dc") );
486
487 if (m_pen.GetStyle() != wxTRANSPARENT)
488 {
489 int w = 0;
490 int h = 0;
491 GetSize( &w, &h );
492 wxCoord xx = XLOG2DEV(x);
493 wxCoord yy = YLOG2DEV(y);
494 if (m_window)
495 {
496 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
497 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
498 }
499 }
500 }
501
502 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
503 wxCoord xc, wxCoord yc )
504 {
505 wxCHECK_RET( Ok(), wxT("invalid window dc") );
506
507 wxCoord xx1 = XLOG2DEV(x1);
508 wxCoord yy1 = YLOG2DEV(y1);
509 wxCoord xx2 = XLOG2DEV(x2);
510 wxCoord yy2 = YLOG2DEV(y2);
511 wxCoord xxc = XLOG2DEV(xc);
512 wxCoord yyc = YLOG2DEV(yc);
513 double dx = xx1 - xxc;
514 double dy = yy1 - yyc;
515 double radius = sqrt((double)(dx*dx+dy*dy));
516 wxCoord r = (wxCoord)radius;
517 double radius1, radius2;
518
519 if (xx1 == xx2 && yy1 == yy2)
520 {
521 radius1 = 0.0;
522 radius2 = 360.0;
523 }
524 else if ( wxIsNullDouble(radius) )
525 {
526 radius1 =
527 radius2 = 0.0;
528 }
529 else
530 {
531 radius1 = (xx1 - xxc == 0) ?
532 (yy1 - yyc < 0) ? 90.0 : -90.0 :
533 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
534 radius2 = (xx2 - xxc == 0) ?
535 (yy2 - yyc < 0) ? 90.0 : -90.0 :
536 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
537 }
538 wxCoord alpha1 = wxCoord(radius1 * 64.0);
539 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
540 while (alpha2 <= 0) alpha2 += 360*64;
541 while (alpha1 > 360*64) alpha1 -= 360*64;
542
543 if (m_window)
544 {
545 if (m_brush.GetStyle() != wxTRANSPARENT)
546 {
547 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
548 {
549 gdk_gc_set_ts_origin( m_textGC,
550 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
551 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
552 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
553 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
554 } else
555 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
556 {
557 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
558 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
559 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
560 } else
561 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
562 {
563 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
564 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
565 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
566 } else
567 if (m_brush.GetStyle() == wxSTIPPLE)
568 {
569 gdk_gc_set_ts_origin( m_brushGC,
570 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
571 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
572 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
573 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
574 }
575 else
576 {
577 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
578 }
579 }
580
581 if (m_pen.GetStyle() != wxTRANSPARENT)
582 {
583 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
584
585 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
586 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
587 }
588 }
589
590 CalcBoundingBox (x1, y1);
591 CalcBoundingBox (x2, y2);
592 }
593
594 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
595 {
596 wxCHECK_RET( Ok(), wxT("invalid window dc") );
597
598 wxCoord xx = XLOG2DEV(x);
599 wxCoord yy = YLOG2DEV(y);
600 wxCoord ww = m_signX * XLOG2DEVREL(width);
601 wxCoord hh = m_signY * YLOG2DEVREL(height);
602
603 // CMB: handle -ve width and/or height
604 if (ww < 0) { ww = -ww; xx = xx - ww; }
605 if (hh < 0) { hh = -hh; yy = yy - hh; }
606
607 if (m_window)
608 {
609 wxCoord start = wxCoord(sa * 64.0);
610 wxCoord end = wxCoord((ea-sa) * 64.0);
611
612 if (m_brush.GetStyle() != wxTRANSPARENT)
613 {
614 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
615 {
616 gdk_gc_set_ts_origin( m_textGC,
617 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
618 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
619 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
620 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
621 } else
622 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
623 {
624 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
625 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
626 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
627 } else
628 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
629 {
630 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
631 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
632 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
633 } else
634 if (m_brush.GetStyle() == wxSTIPPLE)
635 {
636 gdk_gc_set_ts_origin( m_brushGC,
637 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
638 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
639 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
640 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
641 }
642 else
643 {
644 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
645 }
646 }
647
648 if (m_pen.GetStyle() != wxTRANSPARENT)
649 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
650 }
651
652 CalcBoundingBox (x, y);
653 CalcBoundingBox (x + width, y + height);
654 }
655
656 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
657 {
658 wxCHECK_RET( Ok(), wxT("invalid window dc") );
659
660 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
661 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
662
663 CalcBoundingBox (x, y);
664 }
665
666 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
667 {
668 wxCHECK_RET( Ok(), wxT("invalid window dc") );
669
670 if (m_pen.GetStyle() == wxTRANSPARENT) return;
671 if (n <= 0) return;
672
673 //Check, if scaling is necessary
674 const bool doScale =
675 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
676
677 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
678 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
679
680 if (doScale)
681 gpts = new GdkPoint[n];
682
683 for (int i = 0; i < n; i++)
684 {
685 if (doScale)
686 {
687 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
688 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
689 }
690 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
691 }
692
693 if (m_window)
694 gdk_draw_lines( m_window, m_penGC, gpts, n);
695
696 if (doScale)
697 delete[] gpts;
698 }
699
700 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
701 {
702 wxCHECK_RET( Ok(), wxT("invalid window dc") );
703
704 if (n <= 0) return;
705
706 //Check, if scaling is necessary
707 const bool doScale =
708 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
709
710 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
711 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
712
713 if (doScale)
714 gdkpoints = new GdkPoint[n];
715
716 int i;
717 for (i = 0 ; i < n ; i++)
718 {
719 if (doScale)
720 {
721 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
722 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
723 }
724 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
725 }
726
727 if (m_window)
728 {
729 if (m_brush.GetStyle() != wxTRANSPARENT)
730 {
731 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
732 {
733 gdk_gc_set_ts_origin( m_textGC,
734 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
735 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
736 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
737 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
738 } else
739 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
740 {
741 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
742 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
743 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
744 } else
745 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
746 {
747 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
748 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
749 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
750 } else
751 if (m_brush.GetStyle() == wxSTIPPLE)
752 {
753 gdk_gc_set_ts_origin( m_brushGC,
754 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
755 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
756 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
757 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
758 }
759 else
760 {
761 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
762 }
763 }
764
765 if (m_pen.GetStyle() != wxTRANSPARENT)
766 {
767 /*
768 for (i = 0 ; i < n ; i++)
769 {
770 gdk_draw_line( m_window, m_penGC,
771 gdkpoints[i%n].x,
772 gdkpoints[i%n].y,
773 gdkpoints[(i+1)%n].x,
774 gdkpoints[(i+1)%n].y);
775 }
776 */
777 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
778
779 }
780 }
781
782 if (doScale)
783 delete[] gdkpoints;
784 }
785
786 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
787 {
788 wxCHECK_RET( Ok(), wxT("invalid window dc") );
789
790 wxCoord xx = XLOG2DEV(x);
791 wxCoord yy = YLOG2DEV(y);
792 wxCoord ww = m_signX * XLOG2DEVREL(width);
793 wxCoord hh = m_signY * YLOG2DEVREL(height);
794
795 // CMB: draw nothing if transformed w or h is 0
796 if (ww == 0 || hh == 0) return;
797
798 // CMB: handle -ve width and/or height
799 if (ww < 0) { ww = -ww; xx = xx - ww; }
800 if (hh < 0) { hh = -hh; yy = yy - hh; }
801
802 if (m_window)
803 {
804 if (m_brush.GetStyle() != wxTRANSPARENT)
805 {
806 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
807 {
808 gdk_gc_set_ts_origin( m_textGC,
809 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
810 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
811 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
812 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
813 } else
814 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
815 {
816 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
817 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
818 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
819 } else
820 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
821 {
822 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
823 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
824 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
825 } else
826 if (m_brush.GetStyle() == wxSTIPPLE)
827 {
828 gdk_gc_set_ts_origin( m_brushGC,
829 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
830 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
831 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
832 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
833 }
834 else
835 {
836 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
837 }
838 }
839
840 if (m_pen.GetStyle() != wxTRANSPARENT)
841 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
842 }
843
844 CalcBoundingBox( x, y );
845 CalcBoundingBox( x + width, y + height );
846 }
847
848 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
849 {
850 wxCHECK_RET( Ok(), wxT("invalid window dc") );
851
852 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
853
854 wxCoord xx = XLOG2DEV(x);
855 wxCoord yy = YLOG2DEV(y);
856 wxCoord ww = m_signX * XLOG2DEVREL(width);
857 wxCoord hh = m_signY * YLOG2DEVREL(height);
858 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
859
860 // CMB: handle -ve width and/or height
861 if (ww < 0) { ww = -ww; xx = xx - ww; }
862 if (hh < 0) { hh = -hh; yy = yy - hh; }
863
864 // CMB: if radius is zero use DrawRectangle() instead to avoid
865 // X drawing errors with small radii
866 if (rr == 0)
867 {
868 DrawRectangle( x, y, width, height );
869 return;
870 }
871
872 // CMB: draw nothing if transformed w or h is 0
873 if (ww == 0 || hh == 0) return;
874
875 // CMB: adjust size if outline is drawn otherwise the result is
876 // 1 pixel too wide and high
877 if (m_pen.GetStyle() != wxTRANSPARENT)
878 {
879 ww--;
880 hh--;
881 }
882
883 if (m_window)
884 {
885 // CMB: ensure dd is not larger than rectangle otherwise we
886 // get an hour glass shape
887 wxCoord dd = 2 * rr;
888 if (dd > ww) dd = ww;
889 if (dd > hh) dd = hh;
890 rr = dd / 2;
891
892 if (m_brush.GetStyle() != wxTRANSPARENT)
893 {
894 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
895 {
896 gdk_gc_set_ts_origin( m_textGC,
897 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
898 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
899 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
900 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
901 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
902 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
903 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
904 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
905 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
906 } else
907 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
908 {
909 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
910 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
911 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
912 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
913 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
914 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
915 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
916 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
917 } else
918 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
919 {
920 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
921 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
922 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
923 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
924 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
925 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
926 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
927 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
928 } else
929 if (m_brush.GetStyle() == wxSTIPPLE)
930 {
931 gdk_gc_set_ts_origin( m_brushGC,
932 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
933 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
934 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
935 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
936 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
937 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
938 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
939 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
940 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
941 }
942 else
943 {
944 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
945 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
948 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
949 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
950 }
951 }
952
953 if (m_pen.GetStyle() != wxTRANSPARENT)
954 {
955 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
956 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
957 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
958 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
959 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
960 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
961 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
962 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
963 }
964 }
965
966 // this ignores the radius
967 CalcBoundingBox( x, y );
968 CalcBoundingBox( x + width, y + height );
969 }
970
971 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
972 {
973 wxCHECK_RET( Ok(), wxT("invalid window dc") );
974
975 wxCoord xx = XLOG2DEV(x);
976 wxCoord yy = YLOG2DEV(y);
977 wxCoord ww = m_signX * XLOG2DEVREL(width);
978 wxCoord hh = m_signY * YLOG2DEVREL(height);
979
980 // CMB: handle -ve width and/or height
981 if (ww < 0) { ww = -ww; xx = xx - ww; }
982 if (hh < 0) { hh = -hh; yy = yy - hh; }
983
984 if (m_window)
985 {
986 if (m_brush.GetStyle() != wxTRANSPARENT)
987 {
988 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
989 {
990 gdk_gc_set_ts_origin( m_textGC,
991 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
992 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
993 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
994 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
995 } else
996 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
997 {
998 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
999 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1000 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1001 } else
1002 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1003 {
1004 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1005 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1006 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1007 } else
1008 if (m_brush.GetStyle() == wxSTIPPLE)
1009 {
1010 gdk_gc_set_ts_origin( m_brushGC,
1011 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1012 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1013 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1014 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1015 }
1016 else
1017 {
1018 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1019 }
1020 }
1021
1022 if (m_pen.GetStyle() != wxTRANSPARENT)
1023 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1024 }
1025
1026 CalcBoundingBox( x, y );
1027 CalcBoundingBox( x + width, y + height );
1028 }
1029
1030 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1031 {
1032 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1033 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1034 }
1035
1036 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1037 wxCoord x, wxCoord y,
1038 bool useMask )
1039 {
1040 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1041
1042 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1043
1044 bool is_mono = bitmap.GetDepth() == 1;
1045
1046 // scale/translate size and position
1047 int xx = XLOG2DEV(x);
1048 int yy = YLOG2DEV(y);
1049
1050 int w = bitmap.GetWidth();
1051 int h = bitmap.GetHeight();
1052
1053 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1054 xx -= w;
1055
1056 CalcBoundingBox( x, y );
1057 CalcBoundingBox( x + w, y + h );
1058
1059 if (!m_window) return;
1060
1061 int ww = XLOG2DEVREL(w);
1062 int hh = YLOG2DEVREL(h);
1063
1064 // compare to current clipping region
1065 if (!m_currentClippingRegion.IsNull())
1066 {
1067 wxRegion tmp( xx,yy,ww,hh );
1068 tmp.Intersect( m_currentClippingRegion );
1069 if (tmp.IsEmpty())
1070 return;
1071 }
1072
1073 // scale bitmap if required
1074 wxBitmap use_bitmap = bitmap;
1075 if ((w != ww) || (h != hh))
1076 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1077
1078 #if !GTK_CHECK_VERSION(2,2,0)
1079 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1080 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1081 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1082 // and also creates the mask as a side-effect:
1083 use_bitmap.GetPixmap();
1084 #endif
1085
1086 // apply mask if any
1087 GdkBitmap *mask = (GdkBitmap *) NULL;
1088 if (useMask && use_bitmap.GetMask())
1089 mask = use_bitmap.GetMask()->GetBitmap();
1090
1091 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1092
1093 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1094
1095 if (mask != NULL)
1096 {
1097 if (!m_currentClippingRegion.IsNull())
1098 {
1099 GdkColor col;
1100 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1101 GdkGC *gc = gdk_gc_new( new_mask );
1102 col.pixel = 0;
1103 gdk_gc_set_foreground( gc, &col );
1104 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1105 col.pixel = 0;
1106 gdk_gc_set_background( gc, &col );
1107 col.pixel = 1;
1108 gdk_gc_set_foreground( gc, &col );
1109 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1110 gdk_gc_set_clip_origin( gc, -xx, -yy );
1111 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1112 gdk_gc_set_stipple( gc, mask );
1113 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1114 mask = new_mask;
1115 g_object_unref (gc);
1116 }
1117
1118 gdk_gc_set_clip_mask(use_gc, mask);
1119 gdk_gc_set_clip_origin(use_gc, xx, yy);
1120 }
1121
1122 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1123 // drawing a mono-bitmap (XBitmap) we use the current text GC
1124 if (is_mono)
1125 {
1126 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1127 GdkGC *gc = gdk_gc_new( bitmap2 );
1128 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1129 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1130 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1131
1132 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1133
1134 g_object_unref (bitmap2);
1135 g_object_unref (gc);
1136 }
1137 else
1138 {
1139 #if GTK_CHECK_VERSION(2,2,0)
1140 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1141 {
1142 gdk_draw_pixbuf(m_window, use_gc,
1143 use_bitmap.GetPixbuf(),
1144 0, 0, xx, yy, -1, -1,
1145 GDK_RGB_DITHER_NORMAL, xx, yy);
1146 }
1147 else
1148 #endif
1149 {
1150 gdk_draw_drawable(m_window, use_gc,
1151 use_bitmap.GetPixmap(),
1152 0, 0, xx, yy, -1, -1);
1153 }
1154 }
1155
1156 // remove mask again if any
1157 if (mask != NULL)
1158 {
1159 gdk_gc_set_clip_mask(use_gc, NULL);
1160 gdk_gc_set_clip_origin(use_gc, 0, 0);
1161 if (!m_currentClippingRegion.IsNull())
1162 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1163 if (new_mask != NULL)
1164 g_object_unref(new_mask);
1165 }
1166 }
1167
1168 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1169 wxCoord width, wxCoord height,
1170 wxDC *source,
1171 wxCoord xsrc, wxCoord ysrc,
1172 int logical_func,
1173 bool useMask,
1174 wxCoord xsrcMask, wxCoord ysrcMask )
1175 {
1176 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1177
1178 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1179
1180 if (!m_window) return false;
1181
1182 // transform the source DC coords to the device ones
1183 xsrc = source->LogicalToDeviceX(xsrc);
1184 ysrc = source->LogicalToDeviceY(ysrc);
1185
1186 wxClientDC *srcDC = (wxClientDC*)source;
1187 wxMemoryDC *memDC = (wxMemoryDC*)source;
1188
1189 bool use_bitmap_method = false;
1190 bool is_mono = false;
1191
1192 if (xsrcMask == -1 && ysrcMask == -1)
1193 {
1194 xsrcMask = xsrc;
1195 ysrcMask = ysrc;
1196 }
1197
1198 if (srcDC->m_isMemDC)
1199 {
1200 if (!memDC->m_selected.Ok()) return false;
1201
1202 is_mono = (memDC->m_selected.GetDepth() == 1);
1203
1204 // we use the "XCopyArea" way to copy a memory dc into
1205 // a different window if the memory dc BOTH
1206 // a) doesn't have any mask or its mask isn't used
1207 // b) it is clipped
1208 // c) is not 1-bit
1209
1210 if (useMask && (memDC->m_selected.GetMask()))
1211 {
1212 // we HAVE TO use the direct way for memory dcs
1213 // that have mask since the XCopyArea doesn't know
1214 // about masks
1215 use_bitmap_method = true;
1216 }
1217 else if (is_mono)
1218 {
1219 // we HAVE TO use the direct way for memory dcs
1220 // that are bitmaps because XCopyArea doesn't cope
1221 // with different bit depths
1222 use_bitmap_method = true;
1223 }
1224 else if ((xsrc == 0) && (ysrc == 0) &&
1225 (width == memDC->m_selected.GetWidth()) &&
1226 (height == memDC->m_selected.GetHeight()))
1227 {
1228 // we SHOULD use the direct way if all of the bitmap
1229 // in the memory dc is copied in which case XCopyArea
1230 // wouldn't be able able to boost performace by reducing
1231 // the area to be scaled
1232 use_bitmap_method = true;
1233 }
1234 }
1235
1236 CalcBoundingBox( xdest, ydest );
1237 CalcBoundingBox( xdest + width, ydest + height );
1238
1239 // scale/translate size and position
1240 wxCoord xx = XLOG2DEV(xdest);
1241 wxCoord yy = YLOG2DEV(ydest);
1242
1243 wxCoord ww = XLOG2DEVREL(width);
1244 wxCoord hh = YLOG2DEVREL(height);
1245
1246 // compare to current clipping region
1247 if (!m_currentClippingRegion.IsNull())
1248 {
1249 wxRegion tmp( xx,yy,ww,hh );
1250 tmp.Intersect( m_currentClippingRegion );
1251 if (tmp.IsEmpty())
1252 return true;
1253 }
1254
1255 int old_logical_func = m_logicalFunction;
1256 SetLogicalFunction( logical_func );
1257
1258 if (use_bitmap_method)
1259 {
1260 // scale/translate bitmap size
1261 wxCoord bm_width = memDC->m_selected.GetWidth();
1262 wxCoord bm_height = memDC->m_selected.GetHeight();
1263
1264 // Get clip coords for the bitmap. If we don't
1265 // use wxBitmap::Rescale(), which can clip the
1266 // bitmap, these are the same as the original
1267 // coordinates
1268 wxCoord cx = xx;
1269 wxCoord cy = yy;
1270 wxCoord cw = ww;
1271 wxCoord ch = hh;
1272
1273 // interpret userscale of src too
1274 double xsc,ysc;
1275 memDC->GetUserScale(&xsc,&ysc);
1276 bm_width = (int) (bm_width / xsc);
1277 bm_height = (int) (bm_height / ysc);
1278
1279 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1280 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1281
1282 // Scale bitmap if required
1283 wxBitmap use_bitmap = memDC->m_selected;
1284 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1285 {
1286 // This indicates that the blitting code below will get
1287 // a clipped bitmap and therefore needs to move the origin
1288 // accordingly
1289 wxRegion tmp( xx,yy,ww,hh );
1290 tmp.Intersect( m_currentClippingRegion );
1291 tmp.GetBox(cx,cy,cw,ch);
1292
1293 // Scale and clipped bitmap
1294 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1295 }
1296
1297 // apply mask if any
1298 GdkBitmap *mask = (GdkBitmap *) NULL;
1299 if (useMask && use_bitmap.GetMask())
1300 mask = use_bitmap.GetMask()->GetBitmap();
1301
1302 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1303
1304 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1305
1306 if (mask != NULL)
1307 {
1308 if (!m_currentClippingRegion.IsNull())
1309 {
1310 GdkColor col;
1311 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1312 GdkGC *gc = gdk_gc_new( new_mask );
1313 col.pixel = 0;
1314 gdk_gc_set_foreground( gc, &col );
1315 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1316 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1317 col.pixel = 0;
1318 gdk_gc_set_background( gc, &col );
1319 col.pixel = 1;
1320 gdk_gc_set_foreground( gc, &col );
1321 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1322 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1323 gdk_gc_set_clip_origin( gc, -cx, -cy );
1324 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1325 gdk_gc_set_stipple( gc, mask );
1326 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1327 mask = new_mask;
1328 g_object_unref (gc);
1329 }
1330
1331 gdk_gc_set_clip_mask(use_gc, mask);
1332 if (new_mask != NULL)
1333 gdk_gc_set_clip_origin(use_gc, cx, cy);
1334 else
1335 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1336 }
1337
1338 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1339 // drawing a mono-bitmap (XBitmap) we use the current text GC
1340
1341 if (is_mono)
1342 {
1343 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1344 GdkGC *gc = gdk_gc_new( bitmap );
1345 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1346 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1347 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1348
1349 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1350
1351 g_object_unref (bitmap);
1352 g_object_unref (gc);
1353 }
1354 else
1355 {
1356 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1357 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1358 }
1359
1360 // remove mask again if any
1361 if (mask != NULL)
1362 {
1363 gdk_gc_set_clip_mask(use_gc, NULL);
1364 gdk_gc_set_clip_origin(use_gc, 0, 0);
1365 if (!m_currentClippingRegion.IsNull())
1366 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1367 }
1368
1369 if (new_mask)
1370 g_object_unref (new_mask);
1371 }
1372 else // use_bitmap_method
1373 {
1374 if ((width != ww) || (height != hh))
1375 {
1376 // get clip coords
1377 wxRegion tmp( xx,yy,ww,hh );
1378 tmp.Intersect( m_currentClippingRegion );
1379 wxCoord cx,cy,cw,ch;
1380 tmp.GetBox(cx,cy,cw,ch);
1381
1382 // rescale bitmap
1383 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1384
1385 // draw scaled bitmap
1386 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1387 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1388 }
1389 else
1390 {
1391 // No scaling and not a memory dc with a mask either
1392
1393 // copy including child window contents
1394 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1395 gdk_draw_drawable( m_window, m_penGC,
1396 srcDC->GetWindow(),
1397 xsrc, ysrc, xx, yy,
1398 width, height );
1399 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1400 }
1401 }
1402
1403 SetLogicalFunction( old_logical_func );
1404
1405 return true;
1406 }
1407
1408 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1409 {
1410 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1411
1412 if (!m_window) return;
1413
1414 if (text.empty()) return;
1415
1416 x = XLOG2DEV(x);
1417 y = YLOG2DEV(y);
1418
1419 wxCHECK_RET( m_context, wxT("no Pango context") );
1420 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1421 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1422
1423 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1424
1425 const wxCharBuffer data = wxGTK_CONV( text );
1426 if ( !data )
1427 return;
1428 const size_t datalen = strlen(data);
1429 pango_layout_set_text( m_layout, data, datalen);
1430
1431 if (underlined)
1432 {
1433 PangoAttrList *attrs = pango_attr_list_new();
1434 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1435 a->start_index = 0;
1436 a->end_index = datalen;
1437 pango_attr_list_insert(attrs, a);
1438 pango_layout_set_attributes(m_layout, attrs);
1439 pango_attr_list_unref(attrs);
1440 }
1441
1442 int w,h;
1443
1444 if (fabs(m_scaleY - 1.0) > 0.00001)
1445 {
1446 // If there is a user or actually any scale applied to
1447 // the device context, scale the font.
1448
1449 // scale font description
1450 gint oldSize = pango_font_description_get_size( m_fontdesc );
1451 double size = oldSize;
1452 size = size * m_scaleY;
1453 pango_font_description_set_size( m_fontdesc, (gint)size );
1454
1455 // actually apply scaled font
1456 pango_layout_set_font_description( m_layout, m_fontdesc );
1457
1458 pango_layout_get_pixel_size( m_layout, &w, &h );
1459 if ( m_backgroundMode == wxSOLID )
1460 {
1461 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1462 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1463 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1464 }
1465
1466 // Draw layout.
1467 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1468 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1469 else
1470 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1471
1472 // reset unscaled size
1473 pango_font_description_set_size( m_fontdesc, oldSize );
1474
1475 // actually apply unscaled font
1476 pango_layout_set_font_description( m_layout, m_fontdesc );
1477 }
1478 else
1479 {
1480 pango_layout_get_pixel_size( m_layout, &w, &h );
1481 if ( m_backgroundMode == wxSOLID )
1482 {
1483 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1484 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1485 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1486 }
1487
1488 // Draw layout.
1489 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1490 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1491 else
1492 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1493 }
1494
1495 if (underlined)
1496 {
1497 // undo underline attributes setting:
1498 pango_layout_set_attributes(m_layout, NULL);
1499 }
1500
1501 wxCoord width = w;
1502 wxCoord height = h;
1503
1504 width = wxCoord(width / m_scaleX);
1505 height = wxCoord(height / m_scaleY);
1506 CalcBoundingBox (x + width, y + height);
1507 CalcBoundingBox (x, y);
1508 }
1509
1510
1511 // TODO: There is an example of rotating text with GTK2 that would probably be
1512 // a better approach here:
1513 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1514
1515 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1516 {
1517 if (!m_window || text.empty())
1518 return;
1519
1520 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1521
1522 if ( wxIsNullDouble(angle) )
1523 {
1524 DrawText(text, x, y);
1525 return;
1526 }
1527
1528 wxCoord w;
1529 wxCoord h;
1530
1531 // TODO: implement later without GdkFont for GTK 2.0
1532 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1533
1534 // draw the string normally
1535 wxBitmap src(w, h);
1536 wxMemoryDC dc;
1537 dc.SelectObject(src);
1538 dc.SetFont(GetFont());
1539 dc.SetBackground(*wxBLACK_BRUSH);
1540 dc.SetBrush(*wxBLACK_BRUSH);
1541 dc.Clear();
1542 dc.SetTextForeground( *wxWHITE );
1543 dc.DrawText(text, 0, 0);
1544 dc.SelectObject(wxNullBitmap);
1545
1546 // Calculate the size of the rotated bounding box.
1547 double rad = DegToRad(angle);
1548 double dx = cos(rad),
1549 dy = sin(rad);
1550
1551 // the rectngle vertices are counted clockwise with the first one being at
1552 // (0, 0) (or, rather, at (x, y))
1553 double x2 = w*dx,
1554 y2 = -w*dy; // y axis points to the bottom, hence minus
1555 double x4 = h*dy,
1556 y4 = h*dx;
1557 double x3 = x4 + x2,
1558 y3 = y4 + y2;
1559
1560 // calc max and min
1561 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1562 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1563 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1564 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1565
1566
1567 wxImage image = src.ConvertToImage();
1568
1569 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1570 m_textForegroundColour.Green(),
1571 m_textForegroundColour.Blue() );
1572 image = image.Rotate( rad, wxPoint(0,0) );
1573
1574 int i_angle = (int) angle;
1575 i_angle = i_angle % 360;
1576 if (i_angle < 0)
1577 i_angle += 360;
1578 int xoffset = 0;
1579 if ((i_angle >= 90.0) && (i_angle < 270.0))
1580 xoffset = image.GetWidth();
1581 int yoffset = 0;
1582 if ((i_angle >= 0.0) && (i_angle < 180.0))
1583 yoffset = image.GetHeight();
1584
1585 if ((i_angle >= 0) && (i_angle < 90))
1586 yoffset -= (int)( cos(rad)*h );
1587 if ((i_angle >= 90) && (i_angle < 180))
1588 xoffset -= (int)( sin(rad)*h );
1589 if ((i_angle >= 180) && (i_angle < 270))
1590 yoffset -= (int)( cos(rad)*h );
1591 if ((i_angle >= 270) && (i_angle < 360))
1592 xoffset -= (int)( sin(rad)*h );
1593
1594 int i_x = x - xoffset;
1595 int i_y = y - yoffset;
1596
1597 src = image;
1598 DoDrawBitmap( src, i_x, i_y, true );
1599
1600
1601 // it would be better to draw with non underlined font and draw the line
1602 // manually here (it would be more straight...)
1603 #if 0
1604 if ( m_font.GetUnderlined() )
1605 {
1606 gdk_draw_line( m_window, m_textGC,
1607 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1608 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1609 }
1610 #endif // 0
1611
1612 // update the bounding box
1613 CalcBoundingBox(x + minX, y + minY);
1614 CalcBoundingBox(x + maxX, y + maxY);
1615 }
1616
1617 void wxWindowDC::DoGetTextExtent(const wxString &string,
1618 wxCoord *width, wxCoord *height,
1619 wxCoord *descent, wxCoord *externalLeading,
1620 wxFont *theFont) const
1621 {
1622 if ( width )
1623 *width = 0;
1624 if ( height )
1625 *height = 0;
1626 if ( descent )
1627 *descent = 0;
1628 if ( externalLeading )
1629 *externalLeading = 0;
1630
1631 if (string.empty())
1632 return;
1633
1634 // ensure that theFont is always non-NULL
1635 if ( !theFont || !theFont->Ok() )
1636 theFont = wx_const_cast(wxFont *, &m_font);
1637
1638 // and use it if it's valid
1639 if ( theFont->Ok() )
1640 {
1641 pango_layout_set_font_description
1642 (
1643 m_layout,
1644 theFont->GetNativeFontInfo()->description
1645 );
1646 }
1647
1648 // Set layout's text
1649 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1650 if ( !dataUTF8 )
1651 {
1652 // hardly ideal, but what else can we do if conversion failed?
1653 return;
1654 }
1655
1656 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1657
1658 if (descent)
1659 {
1660 int h;
1661 pango_layout_get_pixel_size( m_layout, width, &h );
1662 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1663 int baseline = pango_layout_iter_get_baseline(iter);
1664 pango_layout_iter_free(iter);
1665 *descent = h - PANGO_PIXELS(baseline);
1666
1667 if (height)
1668 *height = (wxCoord) h;
1669 }
1670 else
1671 {
1672 pango_layout_get_pixel_size( m_layout, width, height );
1673 }
1674
1675 // Reset old font description
1676 if (theFont)
1677 pango_layout_set_font_description( m_layout, m_fontdesc );
1678 }
1679
1680 wxCoord wxWindowDC::GetCharWidth() const
1681 {
1682 pango_layout_set_text( m_layout, "H", 1 );
1683 int w;
1684 pango_layout_get_pixel_size( m_layout, &w, NULL );
1685 return w;
1686 }
1687
1688 wxCoord wxWindowDC::GetCharHeight() const
1689 {
1690 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1691 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1692 }
1693
1694 void wxWindowDC::Clear()
1695 {
1696 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1697
1698 if (!m_window) return;
1699
1700 // VZ: the code below results in infinite recursion and crashes when
1701 // dc.Clear() is done from OnPaint() so I disable it for now.
1702 // I don't know what the correct fix is but Clear() surely should not
1703 // reenter OnPaint()!
1704 #if 0
1705 /* - we either are a memory dc or have a window as the
1706 owner. anything else shouldn't happen.
1707 - we don't use gdk_window_clear() as we don't set
1708 the window's background colour anymore. it is too
1709 much pain to keep the DC's and the window's back-
1710 ground colour in synch. */
1711
1712 if (m_owner)
1713 {
1714 m_owner->Clear();
1715 return;
1716 }
1717
1718 if (m_isMemDC)
1719 {
1720 int width,height;
1721 GetSize( &width, &height );
1722 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1723 return;
1724 }
1725 #else // 1
1726 int width,height;
1727 GetSize( &width, &height );
1728 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1729 #endif // 0/1
1730 }
1731
1732 void wxWindowDC::SetFont( const wxFont &font )
1733 {
1734 m_font = font;
1735
1736 if (m_font.Ok())
1737 {
1738 if (m_fontdesc)
1739 pango_font_description_free( m_fontdesc );
1740
1741 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1742
1743
1744 if (m_owner)
1745 {
1746 PangoContext *oldContext = m_context;
1747
1748 m_context = m_owner->GtkGetPangoDefaultContext();
1749
1750 // If we switch back/forth between different contexts
1751 // we also have to create a new layout. I think so,
1752 // at least, and it doesn't hurt to do it.
1753 if (oldContext != m_context)
1754 {
1755 if (m_layout)
1756 g_object_unref (m_layout);
1757
1758 m_layout = pango_layout_new( m_context );
1759 }
1760 }
1761
1762 pango_layout_set_font_description( m_layout, m_fontdesc );
1763 }
1764 }
1765
1766 void wxWindowDC::SetPen( const wxPen &pen )
1767 {
1768 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1769
1770 if (m_pen == pen) return;
1771
1772 m_pen = pen;
1773
1774 if (!m_pen.Ok()) return;
1775
1776 if (!m_window) return;
1777
1778 gint width = m_pen.GetWidth();
1779 if (width <= 0)
1780 {
1781 // CMB: if width is non-zero scale it with the dc
1782 width = 1;
1783 }
1784 else
1785 {
1786 // X doesn't allow different width in x and y and so we take
1787 // the average
1788 double w = 0.5 +
1789 ( fabs((double) XLOG2DEVREL(width)) +
1790 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1791 width = (int)w;
1792 if ( !width )
1793 {
1794 // width can't be 0 or an internal GTK error occurs inside
1795 // gdk_gc_set_dashes() below
1796 width = 1;
1797 }
1798 }
1799
1800 static const wxGTKDash dotted[] = {1, 1};
1801 static const wxGTKDash short_dashed[] = {2, 2};
1802 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1803 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1804
1805 // We express dash pattern in pen width unit, so we are
1806 // independent of zoom factor and so on...
1807 int req_nb_dash;
1808 const wxGTKDash *req_dash;
1809
1810 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1811 switch (m_pen.GetStyle())
1812 {
1813 case wxUSER_DASH:
1814 {
1815 lineStyle = GDK_LINE_ON_OFF_DASH;
1816 req_nb_dash = m_pen.GetDashCount();
1817 req_dash = (wxGTKDash*)m_pen.GetDash();
1818 break;
1819 }
1820 case wxDOT:
1821 {
1822 lineStyle = GDK_LINE_ON_OFF_DASH;
1823 req_nb_dash = 2;
1824 req_dash = dotted;
1825 break;
1826 }
1827 case wxLONG_DASH:
1828 {
1829 lineStyle = GDK_LINE_ON_OFF_DASH;
1830 req_nb_dash = 2;
1831 req_dash = wxCoord_dashed;
1832 break;
1833 }
1834 case wxSHORT_DASH:
1835 {
1836 lineStyle = GDK_LINE_ON_OFF_DASH;
1837 req_nb_dash = 2;
1838 req_dash = short_dashed;
1839 break;
1840 }
1841 case wxDOT_DASH:
1842 {
1843 // lineStyle = GDK_LINE_DOUBLE_DASH;
1844 lineStyle = GDK_LINE_ON_OFF_DASH;
1845 req_nb_dash = 4;
1846 req_dash = dotted_dashed;
1847 break;
1848 }
1849
1850 case wxTRANSPARENT:
1851 case wxSTIPPLE_MASK_OPAQUE:
1852 case wxSTIPPLE:
1853 case wxSOLID:
1854 default:
1855 {
1856 lineStyle = GDK_LINE_SOLID;
1857 req_dash = (wxGTKDash*)NULL;
1858 req_nb_dash = 0;
1859 break;
1860 }
1861 }
1862
1863 if (req_dash && req_nb_dash)
1864 {
1865 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1866 if (real_req_dash)
1867 {
1868 for (int i = 0; i < req_nb_dash; i++)
1869 real_req_dash[i] = req_dash[i] * width;
1870 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1871 delete[] real_req_dash;
1872 }
1873 else
1874 {
1875 // No Memory. We use non-scaled dash pattern...
1876 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1877 }
1878 }
1879
1880 GdkCapStyle capStyle = GDK_CAP_ROUND;
1881 switch (m_pen.GetCap())
1882 {
1883 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1884 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1885 case wxCAP_ROUND:
1886 default:
1887 {
1888 if (width <= 1)
1889 {
1890 width = 0;
1891 capStyle = GDK_CAP_NOT_LAST;
1892 }
1893 else
1894 {
1895 capStyle = GDK_CAP_ROUND;
1896 }
1897 break;
1898 }
1899 }
1900
1901 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1902 switch (m_pen.GetJoin())
1903 {
1904 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1905 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1906 case wxJOIN_ROUND:
1907 default: { joinStyle = GDK_JOIN_ROUND; break; }
1908 }
1909
1910 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1911
1912 m_pen.GetColour().CalcPixel( m_cmap );
1913 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1914 }
1915
1916 void wxWindowDC::SetBrush( const wxBrush &brush )
1917 {
1918 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1919
1920 if (m_brush == brush) return;
1921
1922 m_brush = brush;
1923
1924 if (!m_brush.Ok()) return;
1925
1926 if (!m_window) return;
1927
1928 m_brush.GetColour().CalcPixel( m_cmap );
1929 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1930
1931 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
1932
1933 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
1934 {
1935 if (m_brush.GetStipple()->GetDepth() != 1)
1936 {
1937 gdk_gc_set_fill( m_brushGC, GDK_TILED );
1938 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1939 }
1940 else
1941 {
1942 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1943 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1944 }
1945 }
1946
1947 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1948 {
1949 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
1950 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
1951 }
1952
1953 if (m_brush.IsHatch())
1954 {
1955 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1956 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
1957 gdk_gc_set_stipple( m_brushGC, hatches[num] );
1958 }
1959 }
1960
1961 void wxWindowDC::SetBackground( const wxBrush &brush )
1962 {
1963 /* CMB 21/7/98: Added SetBackground. Sets background brush
1964 * for Clear() and bg colour for shapes filled with cross-hatch brush */
1965
1966 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1967
1968 if (m_backgroundBrush == brush) return;
1969
1970 m_backgroundBrush = brush;
1971
1972 if (!m_backgroundBrush.Ok()) return;
1973
1974 if (!m_window) return;
1975
1976 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
1977 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
1978 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
1979 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
1980 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
1981
1982 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
1983
1984 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
1985 {
1986 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
1987 {
1988 gdk_gc_set_fill( m_bgGC, GDK_TILED );
1989 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
1990 }
1991 else
1992 {
1993 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
1994 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
1995 }
1996 }
1997
1998 if (m_backgroundBrush.IsHatch())
1999 {
2000 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2001 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2002 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2003 }
2004 }
2005
2006 void wxWindowDC::SetLogicalFunction( int function )
2007 {
2008 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2009
2010 if (m_logicalFunction == function)
2011 return;
2012
2013 // VZ: shouldn't this be a CHECK?
2014 if (!m_window)
2015 return;
2016
2017 GdkFunction mode;
2018 switch (function)
2019 {
2020 case wxXOR: mode = GDK_XOR; break;
2021 case wxINVERT: mode = GDK_INVERT; break;
2022 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2023 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2024 case wxCLEAR: mode = GDK_CLEAR; break;
2025 case wxSET: mode = GDK_SET; break;
2026 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2027 case wxAND: mode = GDK_AND; break;
2028 case wxOR: mode = GDK_OR; break;
2029 case wxEQUIV: mode = GDK_EQUIV; break;
2030 case wxNAND: mode = GDK_NAND; break;
2031 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2032 case wxCOPY: mode = GDK_COPY; break;
2033 case wxNO_OP: mode = GDK_NOOP; break;
2034 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2035
2036 // unsupported by GTK
2037 case wxNOR: mode = GDK_COPY; break;
2038 default:
2039 wxFAIL_MSG( wxT("unsupported logical function") );
2040 mode = GDK_COPY;
2041 }
2042
2043 m_logicalFunction = function;
2044
2045 gdk_gc_set_function( m_penGC, mode );
2046 gdk_gc_set_function( m_brushGC, mode );
2047
2048 // to stay compatible with wxMSW, we don't apply ROPs to the text
2049 // operations (i.e. DrawText/DrawRotatedText).
2050 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2051 gdk_gc_set_function( m_textGC, mode );
2052 }
2053
2054 void wxWindowDC::SetTextForeground( const wxColour &col )
2055 {
2056 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2057
2058 // don't set m_textForegroundColour to an invalid colour as we'd crash
2059 // later then (we use m_textForegroundColour.GetColor() without checking
2060 // in a few places)
2061 if ( !col.Ok() || (m_textForegroundColour == col) )
2062 return;
2063
2064 m_textForegroundColour = col;
2065
2066 if ( m_window )
2067 {
2068 m_textForegroundColour.CalcPixel( m_cmap );
2069 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2070 }
2071 }
2072
2073 void wxWindowDC::SetTextBackground( const wxColour &col )
2074 {
2075 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2076
2077 // same as above
2078 if ( !col.Ok() || (m_textBackgroundColour == col) )
2079 return;
2080
2081 m_textBackgroundColour = col;
2082
2083 if ( m_window )
2084 {
2085 m_textBackgroundColour.CalcPixel( m_cmap );
2086 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2087 }
2088 }
2089
2090 void wxWindowDC::SetBackgroundMode( int mode )
2091 {
2092 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2093
2094 m_backgroundMode = mode;
2095
2096 if (!m_window) return;
2097
2098 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2099 // transparent/solid background mode
2100
2101 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2102 {
2103 gdk_gc_set_fill( m_brushGC,
2104 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2105 }
2106 }
2107
2108 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2109 {
2110 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2111 }
2112
2113 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2114 {
2115 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2116
2117 if (!m_window) return;
2118
2119 wxRect rect;
2120 rect.x = XLOG2DEV(x);
2121 rect.y = YLOG2DEV(y);
2122 rect.width = XLOG2DEVREL(width);
2123 rect.height = YLOG2DEVREL(height);
2124
2125 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2126 {
2127 rect.x -= rect.width;
2128 }
2129
2130 if (!m_currentClippingRegion.IsNull())
2131 m_currentClippingRegion.Intersect( rect );
2132 else
2133 m_currentClippingRegion.Union( rect );
2134
2135 #if USE_PAINT_REGION
2136 if (!m_paintClippingRegion.IsNull())
2137 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2138 #endif
2139
2140 wxCoord xx, yy, ww, hh;
2141 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2142 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2143
2144 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2145 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2146 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2147 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2148 }
2149
2150 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2151 {
2152 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2153
2154 if (region.Empty())
2155 {
2156 DestroyClippingRegion();
2157 return;
2158 }
2159
2160 if (!m_window) return;
2161
2162 if (!m_currentClippingRegion.IsNull())
2163 m_currentClippingRegion.Intersect( region );
2164 else
2165 m_currentClippingRegion.Union( region );
2166
2167 #if USE_PAINT_REGION
2168 if (!m_paintClippingRegion.IsNull())
2169 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2170 #endif
2171
2172 wxCoord xx, yy, ww, hh;
2173 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2174 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2175
2176 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2177 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2178 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2179 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2180 }
2181
2182 void wxWindowDC::DestroyClippingRegion()
2183 {
2184 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2185
2186 wxDC::DestroyClippingRegion();
2187
2188 m_currentClippingRegion.Clear();
2189
2190 #if USE_PAINT_REGION
2191 if (!m_paintClippingRegion.IsEmpty())
2192 m_currentClippingRegion.Union( m_paintClippingRegion );
2193 #endif
2194
2195 if (!m_window) return;
2196
2197 if (m_currentClippingRegion.IsEmpty())
2198 {
2199 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2200 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2201 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2202 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2203 }
2204 else
2205 {
2206 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2207 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2208 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2209 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2210 }
2211 }
2212
2213 void wxWindowDC::Destroy()
2214 {
2215 if (m_penGC) wxFreePoolGC( m_penGC );
2216 m_penGC = (GdkGC*) NULL;
2217 if (m_brushGC) wxFreePoolGC( m_brushGC );
2218 m_brushGC = (GdkGC*) NULL;
2219 if (m_textGC) wxFreePoolGC( m_textGC );
2220 m_textGC = (GdkGC*) NULL;
2221 if (m_bgGC) wxFreePoolGC( m_bgGC );
2222 m_bgGC = (GdkGC*) NULL;
2223 }
2224
2225 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2226 {
2227 m_deviceOriginX = x;
2228 m_deviceOriginY = y;
2229
2230 ComputeScaleAndOrigin();
2231 }
2232
2233 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2234 {
2235 m_signX = (xLeftRight ? 1 : -1);
2236 m_signY = (yBottomUp ? -1 : 1);
2237
2238 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2239 m_signX = -m_signX;
2240
2241 ComputeScaleAndOrigin();
2242 }
2243
2244 void wxWindowDC::ComputeScaleAndOrigin()
2245 {
2246 const wxRealPoint origScale(m_scaleX, m_scaleY);
2247
2248 wxDC::ComputeScaleAndOrigin();
2249
2250 // if scale has changed call SetPen to recalulate the line width
2251 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2252 {
2253 // this is a bit artificial, but we need to force wxDC to think the pen
2254 // has changed
2255 wxPen pen = m_pen;
2256 m_pen = wxNullPen;
2257 SetPen( pen );
2258 }
2259 }
2260
2261 // Resolution in pixels per logical inch
2262 wxSize wxWindowDC::GetPPI() const
2263 {
2264 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2265 }
2266
2267 int wxWindowDC::GetDepth() const
2268 {
2269 return gdk_drawable_get_depth(m_window);
2270 }
2271
2272
2273 //-----------------------------------------------------------------------------
2274 // wxPaintDC
2275 //-----------------------------------------------------------------------------
2276
2277 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2278
2279 // Limit the paint region to the window size. Sometimes
2280 // the paint region is too big, and this risks X11 errors
2281 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2282 {
2283 wxRect originalRect = region.GetBox();
2284 wxRect rect(originalRect);
2285 if (rect.width + rect.x > sz.x)
2286 rect.width = sz.x - rect.x;
2287 if (rect.height + rect.y > sz.y)
2288 rect.height = sz.y - rect.y;
2289 if (rect != originalRect)
2290 {
2291 region = wxRegion(rect);
2292 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2293 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2294 rect.x, rect.y, rect.width, rect.height);
2295 }
2296 }
2297
2298 wxPaintDC::wxPaintDC( wxWindow *win )
2299 : wxClientDC( win )
2300 {
2301 #if USE_PAINT_REGION
2302 if (!win->m_clipPaintRegion)
2303 return;
2304
2305 wxSize sz = win->GetSize();
2306 m_paintClippingRegion = win->GetUpdateRegion();
2307 wxLimitRegionToSize(m_paintClippingRegion, sz);
2308
2309 GdkRegion *region = m_paintClippingRegion.GetRegion();
2310 if ( region )
2311 {
2312 m_currentClippingRegion.Union( m_paintClippingRegion );
2313 wxLimitRegionToSize(m_currentClippingRegion, sz);
2314
2315 if (sz.x <= 0 || sz.y <= 0)
2316 return ;
2317
2318 gdk_gc_set_clip_region( m_penGC, region );
2319 gdk_gc_set_clip_region( m_brushGC, region );
2320 gdk_gc_set_clip_region( m_textGC, region );
2321 gdk_gc_set_clip_region( m_bgGC, region );
2322 }
2323 #endif // USE_PAINT_REGION
2324 }
2325
2326 //-----------------------------------------------------------------------------
2327 // wxClientDC
2328 //-----------------------------------------------------------------------------
2329
2330 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2331
2332 wxClientDC::wxClientDC( wxWindow *win )
2333 : wxWindowDC( win )
2334 {
2335 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2336
2337 #ifdef __WXUNIVERSAL__
2338 wxPoint ptOrigin = win->GetClientAreaOrigin();
2339 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2340 wxSize size = win->GetClientSize();
2341 SetClippingRegion(wxPoint(0, 0), size);
2342 #endif // __WXUNIVERSAL__
2343 }
2344
2345 void wxClientDC::DoGetSize(int *width, int *height) const
2346 {
2347 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2348
2349 m_owner->GetClientSize( width, height );
2350 }
2351
2352 // ----------------------------------------------------------------------------
2353 // wxDCModule
2354 // ----------------------------------------------------------------------------
2355
2356 class wxDCModule : public wxModule
2357 {
2358 public:
2359 bool OnInit();
2360 void OnExit();
2361
2362 private:
2363 DECLARE_DYNAMIC_CLASS(wxDCModule)
2364 };
2365
2366 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2367
2368 bool wxDCModule::OnInit()
2369 {
2370 wxInitGCPool();
2371 return true;
2372 }
2373
2374 void wxDCModule::OnExit()
2375 {
2376 wxCleanUpGCPool();
2377 }
wxWidgets (Impactor)