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Fixed [ wxwindows-Bugs-1556877 ] Draw arcs are showed like a pie
[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 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
586 {
587 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
588 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
589 }
590 }
591 }
592
593 CalcBoundingBox (x1, y1);
594 CalcBoundingBox (x2, y2);
595 }
596
597 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
598 {
599 wxCHECK_RET( Ok(), wxT("invalid window dc") );
600
601 wxCoord xx = XLOG2DEV(x);
602 wxCoord yy = YLOG2DEV(y);
603 wxCoord ww = m_signX * XLOG2DEVREL(width);
604 wxCoord hh = m_signY * YLOG2DEVREL(height);
605
606 // CMB: handle -ve width and/or height
607 if (ww < 0) { ww = -ww; xx = xx - ww; }
608 if (hh < 0) { hh = -hh; yy = yy - hh; }
609
610 if (m_window)
611 {
612 wxCoord start = wxCoord(sa * 64.0);
613 wxCoord end = wxCoord((ea-sa) * 64.0);
614
615 if (m_brush.GetStyle() != wxTRANSPARENT)
616 {
617 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
618 {
619 gdk_gc_set_ts_origin( m_textGC,
620 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
621 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
622 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
623 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
624 } else
625 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
626 {
627 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
628 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
629 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
630 } else
631 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
632 {
633 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
634 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
635 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
636 } else
637 if (m_brush.GetStyle() == wxSTIPPLE)
638 {
639 gdk_gc_set_ts_origin( m_brushGC,
640 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
641 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
642 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
643 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
644 }
645 else
646 {
647 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
648 }
649 }
650
651 if (m_pen.GetStyle() != wxTRANSPARENT)
652 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
653 }
654
655 CalcBoundingBox (x, y);
656 CalcBoundingBox (x + width, y + height);
657 }
658
659 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
660 {
661 wxCHECK_RET( Ok(), wxT("invalid window dc") );
662
663 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
664 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
665
666 CalcBoundingBox (x, y);
667 }
668
669 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
670 {
671 wxCHECK_RET( Ok(), wxT("invalid window dc") );
672
673 if (m_pen.GetStyle() == wxTRANSPARENT) return;
674 if (n <= 0) return;
675
676 //Check, if scaling is necessary
677 const bool doScale =
678 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
679
680 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
681 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
682
683 if (doScale)
684 gpts = new GdkPoint[n];
685
686 for (int i = 0; i < n; i++)
687 {
688 if (doScale)
689 {
690 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
691 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
692 }
693 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
694 }
695
696 if (m_window)
697 gdk_draw_lines( m_window, m_penGC, gpts, n);
698
699 if (doScale)
700 delete[] gpts;
701 }
702
703 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
704 {
705 wxCHECK_RET( Ok(), wxT("invalid window dc") );
706
707 if (n <= 0) return;
708
709 //Check, if scaling is necessary
710 const bool doScale =
711 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
712
713 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
714 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
715
716 if (doScale)
717 gdkpoints = new GdkPoint[n];
718
719 int i;
720 for (i = 0 ; i < n ; i++)
721 {
722 if (doScale)
723 {
724 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
725 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
726 }
727 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
728 }
729
730 if (m_window)
731 {
732 if (m_brush.GetStyle() != wxTRANSPARENT)
733 {
734 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
735 {
736 gdk_gc_set_ts_origin( m_textGC,
737 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
738 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
739 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
740 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
741 } else
742 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
743 {
744 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
745 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
746 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
747 } else
748 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
749 {
750 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
751 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
752 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
753 } else
754 if (m_brush.GetStyle() == wxSTIPPLE)
755 {
756 gdk_gc_set_ts_origin( m_brushGC,
757 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
758 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
759 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
760 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
761 }
762 else
763 {
764 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
765 }
766 }
767
768 if (m_pen.GetStyle() != wxTRANSPARENT)
769 {
770 /*
771 for (i = 0 ; i < n ; i++)
772 {
773 gdk_draw_line( m_window, m_penGC,
774 gdkpoints[i%n].x,
775 gdkpoints[i%n].y,
776 gdkpoints[(i+1)%n].x,
777 gdkpoints[(i+1)%n].y);
778 }
779 */
780 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
781
782 }
783 }
784
785 if (doScale)
786 delete[] gdkpoints;
787 }
788
789 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
790 {
791 wxCHECK_RET( Ok(), wxT("invalid window dc") );
792
793 wxCoord xx = XLOG2DEV(x);
794 wxCoord yy = YLOG2DEV(y);
795 wxCoord ww = m_signX * XLOG2DEVREL(width);
796 wxCoord hh = m_signY * YLOG2DEVREL(height);
797
798 // CMB: draw nothing if transformed w or h is 0
799 if (ww == 0 || hh == 0) return;
800
801 // CMB: handle -ve width and/or height
802 if (ww < 0) { ww = -ww; xx = xx - ww; }
803 if (hh < 0) { hh = -hh; yy = yy - hh; }
804
805 if (m_window)
806 {
807 if (m_brush.GetStyle() != wxTRANSPARENT)
808 {
809 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
810 {
811 gdk_gc_set_ts_origin( m_textGC,
812 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
813 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
814 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
815 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
816 } else
817 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
818 {
819 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
820 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
821 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
822 } else
823 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
824 {
825 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
826 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
827 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
828 } else
829 if (m_brush.GetStyle() == wxSTIPPLE)
830 {
831 gdk_gc_set_ts_origin( m_brushGC,
832 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
833 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
834 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
835 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
836 }
837 else
838 {
839 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
840 }
841 }
842
843 if (m_pen.GetStyle() != wxTRANSPARENT)
844 {
845 #if 1
846 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
847 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
848 {
849 // Use 2 1-line rects instead
850 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
851
852 if (m_signX == -1)
853 {
854 // Different for RTL
855 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
856 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
857 }
858 else
859 {
860 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
861 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
862 }
863
864 // reset
865 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
866 }
867 else
868 #endif
869 {
870 // Just use X11 for other cases
871 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
872 }
873 }
874 }
875
876 CalcBoundingBox( x, y );
877 CalcBoundingBox( x + width, y + height );
878 }
879
880 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
881 {
882 wxCHECK_RET( Ok(), wxT("invalid window dc") );
883
884 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
885
886 wxCoord xx = XLOG2DEV(x);
887 wxCoord yy = YLOG2DEV(y);
888 wxCoord ww = m_signX * XLOG2DEVREL(width);
889 wxCoord hh = m_signY * YLOG2DEVREL(height);
890 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
891
892 // CMB: handle -ve width and/or height
893 if (ww < 0) { ww = -ww; xx = xx - ww; }
894 if (hh < 0) { hh = -hh; yy = yy - hh; }
895
896 // CMB: if radius is zero use DrawRectangle() instead to avoid
897 // X drawing errors with small radii
898 if (rr == 0)
899 {
900 DrawRectangle( x, y, width, height );
901 return;
902 }
903
904 // CMB: draw nothing if transformed w or h is 0
905 if (ww == 0 || hh == 0) return;
906
907 // CMB: adjust size if outline is drawn otherwise the result is
908 // 1 pixel too wide and high
909 if (m_pen.GetStyle() != wxTRANSPARENT)
910 {
911 ww--;
912 hh--;
913 }
914
915 if (m_window)
916 {
917 // CMB: ensure dd is not larger than rectangle otherwise we
918 // get an hour glass shape
919 wxCoord dd = 2 * rr;
920 if (dd > ww) dd = ww;
921 if (dd > hh) dd = hh;
922 rr = dd / 2;
923
924 if (m_brush.GetStyle() != wxTRANSPARENT)
925 {
926 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
927 {
928 gdk_gc_set_ts_origin( m_textGC,
929 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
930 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
931 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
932 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
934 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
935 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
936 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
937 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
938 } else
939 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
940 {
941 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
943 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
948 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
949 } else
950 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
951 {
952 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
953 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
954 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
959 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
960 } else
961 if (m_brush.GetStyle() == wxSTIPPLE)
962 {
963 gdk_gc_set_ts_origin( m_brushGC,
964 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
965 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
966 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
967 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
970 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
972 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
973 }
974 else
975 {
976 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
977 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
979 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
980 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
981 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
982 }
983 }
984
985 if (m_pen.GetStyle() != wxTRANSPARENT)
986 {
987 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
988 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
989 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
990 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
992 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
993 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
994 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
995 }
996 }
997
998 // this ignores the radius
999 CalcBoundingBox( x, y );
1000 CalcBoundingBox( x + width, y + height );
1001 }
1002
1003 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1004 {
1005 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1006
1007 wxCoord xx = XLOG2DEV(x);
1008 wxCoord yy = YLOG2DEV(y);
1009 wxCoord ww = m_signX * XLOG2DEVREL(width);
1010 wxCoord hh = m_signY * YLOG2DEVREL(height);
1011
1012 // CMB: handle -ve width and/or height
1013 if (ww < 0) { ww = -ww; xx = xx - ww; }
1014 if (hh < 0) { hh = -hh; yy = yy - hh; }
1015
1016 if (m_window)
1017 {
1018 if (m_brush.GetStyle() != wxTRANSPARENT)
1019 {
1020 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1021 {
1022 gdk_gc_set_ts_origin( m_textGC,
1023 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1024 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1025 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1026 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1027 } else
1028 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1029 {
1030 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1031 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1032 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1033 } else
1034 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1035 {
1036 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1037 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1038 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1039 } else
1040 if (m_brush.GetStyle() == wxSTIPPLE)
1041 {
1042 gdk_gc_set_ts_origin( m_brushGC,
1043 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1044 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1045 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1046 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1047 }
1048 else
1049 {
1050 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1051 }
1052 }
1053
1054 if (m_pen.GetStyle() != wxTRANSPARENT)
1055 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1056 }
1057
1058 CalcBoundingBox( x, y );
1059 CalcBoundingBox( x + width, y + height );
1060 }
1061
1062 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1063 {
1064 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1065 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1066 }
1067
1068 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1069 wxCoord x, wxCoord y,
1070 bool useMask )
1071 {
1072 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1073
1074 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1075
1076 bool is_mono = bitmap.GetDepth() == 1;
1077
1078 // scale/translate size and position
1079 int xx = XLOG2DEV(x);
1080 int yy = YLOG2DEV(y);
1081
1082 int w = bitmap.GetWidth();
1083 int h = bitmap.GetHeight();
1084
1085 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1086 xx -= w;
1087
1088 CalcBoundingBox( x, y );
1089 CalcBoundingBox( x + w, y + h );
1090
1091 if (!m_window) return;
1092
1093 int ww = XLOG2DEVREL(w);
1094 int hh = YLOG2DEVREL(h);
1095
1096 // compare to current clipping region
1097 if (!m_currentClippingRegion.IsNull())
1098 {
1099 wxRegion tmp( xx,yy,ww,hh );
1100 tmp.Intersect( m_currentClippingRegion );
1101 if (tmp.IsEmpty())
1102 return;
1103 }
1104
1105 // scale bitmap if required
1106 wxBitmap use_bitmap = bitmap;
1107 if ((w != ww) || (h != hh))
1108 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1109
1110 #if !GTK_CHECK_VERSION(2,2,0)
1111 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1112 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1113 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1114 // and also creates the mask as a side-effect:
1115 use_bitmap.GetPixmap();
1116 #endif
1117
1118 // apply mask if any
1119 GdkBitmap *mask = (GdkBitmap *) NULL;
1120 if (useMask && use_bitmap.GetMask())
1121 mask = use_bitmap.GetMask()->GetBitmap();
1122
1123 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1124
1125 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1126
1127 if (mask != NULL)
1128 {
1129 if (!m_currentClippingRegion.IsNull())
1130 {
1131 GdkColor col;
1132 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1133 GdkGC *gc = gdk_gc_new( new_mask );
1134 col.pixel = 0;
1135 gdk_gc_set_foreground( gc, &col );
1136 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1137 col.pixel = 0;
1138 gdk_gc_set_background( gc, &col );
1139 col.pixel = 1;
1140 gdk_gc_set_foreground( gc, &col );
1141 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1142 gdk_gc_set_clip_origin( gc, -xx, -yy );
1143 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1144 gdk_gc_set_stipple( gc, mask );
1145 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1146 mask = new_mask;
1147 g_object_unref (gc);
1148 }
1149
1150 gdk_gc_set_clip_mask(use_gc, mask);
1151 gdk_gc_set_clip_origin(use_gc, xx, yy);
1152 }
1153
1154 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1155 // drawing a mono-bitmap (XBitmap) we use the current text GC
1156 if (is_mono)
1157 {
1158 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1159 GdkGC *gc = gdk_gc_new( bitmap2 );
1160 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1161 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1162 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1163
1164 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1165
1166 g_object_unref (bitmap2);
1167 g_object_unref (gc);
1168 }
1169 else
1170 {
1171 #if GTK_CHECK_VERSION(2,2,0)
1172 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1173 {
1174 gdk_draw_pixbuf(m_window, use_gc,
1175 use_bitmap.GetPixbuf(),
1176 0, 0, xx, yy, -1, -1,
1177 GDK_RGB_DITHER_NORMAL, xx, yy);
1178 }
1179 else
1180 #endif
1181 {
1182 gdk_draw_drawable(m_window, use_gc,
1183 use_bitmap.GetPixmap(),
1184 0, 0, xx, yy, -1, -1);
1185 }
1186 }
1187
1188 // remove mask again if any
1189 if (mask != NULL)
1190 {
1191 gdk_gc_set_clip_mask(use_gc, NULL);
1192 gdk_gc_set_clip_origin(use_gc, 0, 0);
1193 if (!m_currentClippingRegion.IsNull())
1194 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1195 if (new_mask != NULL)
1196 g_object_unref(new_mask);
1197 }
1198 }
1199
1200 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1201 wxCoord width, wxCoord height,
1202 wxDC *source,
1203 wxCoord xsrc, wxCoord ysrc,
1204 int logical_func,
1205 bool useMask,
1206 wxCoord xsrcMask, wxCoord ysrcMask )
1207 {
1208 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1209
1210 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1211
1212 if (!m_window) return false;
1213
1214 // transform the source DC coords to the device ones
1215 xsrc = source->LogicalToDeviceX(xsrc);
1216 ysrc = source->LogicalToDeviceY(ysrc);
1217
1218 wxClientDC *srcDC = (wxClientDC*)source;
1219 wxMemoryDC *memDC = (wxMemoryDC*)source;
1220
1221 bool use_bitmap_method = false;
1222 bool is_mono = false;
1223
1224 if (xsrcMask == -1 && ysrcMask == -1)
1225 {
1226 xsrcMask = xsrc;
1227 ysrcMask = ysrc;
1228 }
1229
1230 if (srcDC->m_isMemDC)
1231 {
1232 if (!memDC->m_selected.Ok()) return false;
1233
1234 is_mono = (memDC->m_selected.GetDepth() == 1);
1235
1236 // we use the "XCopyArea" way to copy a memory dc into
1237 // a different window if the memory dc BOTH
1238 // a) doesn't have any mask or its mask isn't used
1239 // b) it is clipped
1240 // c) is not 1-bit
1241
1242 if (useMask && (memDC->m_selected.GetMask()))
1243 {
1244 // we HAVE TO use the direct way for memory dcs
1245 // that have mask since the XCopyArea doesn't know
1246 // about masks
1247 use_bitmap_method = true;
1248 }
1249 else if (is_mono)
1250 {
1251 // we HAVE TO use the direct way for memory dcs
1252 // that are bitmaps because XCopyArea doesn't cope
1253 // with different bit depths
1254 use_bitmap_method = true;
1255 }
1256 else if ((xsrc == 0) && (ysrc == 0) &&
1257 (width == memDC->m_selected.GetWidth()) &&
1258 (height == memDC->m_selected.GetHeight()))
1259 {
1260 // we SHOULD use the direct way if all of the bitmap
1261 // in the memory dc is copied in which case XCopyArea
1262 // wouldn't be able able to boost performace by reducing
1263 // the area to be scaled
1264 use_bitmap_method = true;
1265 }
1266 }
1267
1268 CalcBoundingBox( xdest, ydest );
1269 CalcBoundingBox( xdest + width, ydest + height );
1270
1271 // scale/translate size and position
1272 wxCoord xx = XLOG2DEV(xdest);
1273 wxCoord yy = YLOG2DEV(ydest);
1274
1275 wxCoord ww = XLOG2DEVREL(width);
1276 wxCoord hh = YLOG2DEVREL(height);
1277
1278 // compare to current clipping region
1279 if (!m_currentClippingRegion.IsNull())
1280 {
1281 wxRegion tmp( xx,yy,ww,hh );
1282 tmp.Intersect( m_currentClippingRegion );
1283 if (tmp.IsEmpty())
1284 return true;
1285 }
1286
1287 int old_logical_func = m_logicalFunction;
1288 SetLogicalFunction( logical_func );
1289
1290 if (use_bitmap_method)
1291 {
1292 // scale/translate bitmap size
1293 wxCoord bm_width = memDC->m_selected.GetWidth();
1294 wxCoord bm_height = memDC->m_selected.GetHeight();
1295
1296 // Get clip coords for the bitmap. If we don't
1297 // use wxBitmap::Rescale(), which can clip the
1298 // bitmap, these are the same as the original
1299 // coordinates
1300 wxCoord cx = xx;
1301 wxCoord cy = yy;
1302 wxCoord cw = ww;
1303 wxCoord ch = hh;
1304
1305 // interpret userscale of src too
1306 double xsc,ysc;
1307 memDC->GetUserScale(&xsc,&ysc);
1308 bm_width = (int) (bm_width / xsc);
1309 bm_height = (int) (bm_height / ysc);
1310
1311 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1312 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1313
1314 // Scale bitmap if required
1315 wxBitmap use_bitmap = memDC->m_selected;
1316 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1317 {
1318 // This indicates that the blitting code below will get
1319 // a clipped bitmap and therefore needs to move the origin
1320 // accordingly
1321 wxRegion tmp( xx,yy,ww,hh );
1322 tmp.Intersect( m_currentClippingRegion );
1323 tmp.GetBox(cx,cy,cw,ch);
1324
1325 // Scale and clipped bitmap
1326 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1327 }
1328
1329 // apply mask if any
1330 GdkBitmap *mask = (GdkBitmap *) NULL;
1331 if (useMask && use_bitmap.GetMask())
1332 mask = use_bitmap.GetMask()->GetBitmap();
1333
1334 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1335
1336 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1337
1338 if (mask != NULL)
1339 {
1340 if (!m_currentClippingRegion.IsNull())
1341 {
1342 GdkColor col;
1343 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1344 GdkGC *gc = gdk_gc_new( new_mask );
1345 col.pixel = 0;
1346 gdk_gc_set_foreground( gc, &col );
1347 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1348 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1349 col.pixel = 0;
1350 gdk_gc_set_background( gc, &col );
1351 col.pixel = 1;
1352 gdk_gc_set_foreground( gc, &col );
1353 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1354 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1355 gdk_gc_set_clip_origin( gc, -cx, -cy );
1356 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1357 gdk_gc_set_stipple( gc, mask );
1358 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1359 mask = new_mask;
1360 g_object_unref (gc);
1361 }
1362
1363 gdk_gc_set_clip_mask(use_gc, mask);
1364 if (new_mask != NULL)
1365 gdk_gc_set_clip_origin(use_gc, cx, cy);
1366 else
1367 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1368 }
1369
1370 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1371 // drawing a mono-bitmap (XBitmap) we use the current text GC
1372
1373 if (is_mono)
1374 {
1375 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1376 GdkGC *gc = gdk_gc_new( bitmap );
1377 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1378 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1379 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1380
1381 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1382
1383 g_object_unref (bitmap);
1384 g_object_unref (gc);
1385 }
1386 else
1387 {
1388 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1389 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1390 }
1391
1392 // remove mask again if any
1393 if (mask != NULL)
1394 {
1395 gdk_gc_set_clip_mask(use_gc, NULL);
1396 gdk_gc_set_clip_origin(use_gc, 0, 0);
1397 if (!m_currentClippingRegion.IsNull())
1398 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1399 }
1400
1401 if (new_mask)
1402 g_object_unref (new_mask);
1403 }
1404 else // use_bitmap_method
1405 {
1406 if ((width != ww) || (height != hh))
1407 {
1408 // get clip coords
1409 wxRegion tmp( xx,yy,ww,hh );
1410 tmp.Intersect( m_currentClippingRegion );
1411 wxCoord cx,cy,cw,ch;
1412 tmp.GetBox(cx,cy,cw,ch);
1413
1414 // rescale bitmap
1415 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1416
1417 // draw scaled bitmap
1418 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1419 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1420 }
1421 else
1422 {
1423 // No scaling and not a memory dc with a mask either
1424
1425 // copy including child window contents
1426 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1427 gdk_draw_drawable( m_window, m_penGC,
1428 srcDC->GetWindow(),
1429 xsrc, ysrc, xx, yy,
1430 width, height );
1431 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1432 }
1433 }
1434
1435 SetLogicalFunction( old_logical_func );
1436
1437 return true;
1438 }
1439
1440 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1441 {
1442 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1443
1444 if (!m_window) return;
1445
1446 if (text.empty()) return;
1447
1448 x = XLOG2DEV(x);
1449 y = YLOG2DEV(y);
1450
1451 wxCHECK_RET( m_context, wxT("no Pango context") );
1452 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1453 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1454
1455 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1456
1457 const wxCharBuffer data = wxGTK_CONV( text );
1458 if ( !data )
1459 return;
1460 const size_t datalen = strlen(data);
1461 pango_layout_set_text( m_layout, data, datalen);
1462
1463 if (underlined)
1464 {
1465 PangoAttrList *attrs = pango_attr_list_new();
1466 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1467 a->start_index = 0;
1468 a->end_index = datalen;
1469 pango_attr_list_insert(attrs, a);
1470 pango_layout_set_attributes(m_layout, attrs);
1471 pango_attr_list_unref(attrs);
1472 }
1473
1474 int w,h;
1475
1476 if (fabs(m_scaleY - 1.0) > 0.00001)
1477 {
1478 // If there is a user or actually any scale applied to
1479 // the device context, scale the font.
1480
1481 // scale font description
1482 gint oldSize = pango_font_description_get_size( m_fontdesc );
1483 double size = oldSize;
1484 size = size * m_scaleY;
1485 pango_font_description_set_size( m_fontdesc, (gint)size );
1486
1487 // actually apply scaled font
1488 pango_layout_set_font_description( m_layout, m_fontdesc );
1489
1490 pango_layout_get_pixel_size( m_layout, &w, &h );
1491 if ( m_backgroundMode == wxSOLID )
1492 {
1493 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1494 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1495 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1496 }
1497
1498 // Draw layout.
1499 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1500 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1501 else
1502 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1503
1504 // reset unscaled size
1505 pango_font_description_set_size( m_fontdesc, oldSize );
1506
1507 // actually apply unscaled font
1508 pango_layout_set_font_description( m_layout, m_fontdesc );
1509 }
1510 else
1511 {
1512 pango_layout_get_pixel_size( m_layout, &w, &h );
1513 if ( m_backgroundMode == wxSOLID )
1514 {
1515 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1516 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1517 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1518 }
1519
1520 // Draw layout.
1521 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1522 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1523 else
1524 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1525 }
1526
1527 if (underlined)
1528 {
1529 // undo underline attributes setting:
1530 pango_layout_set_attributes(m_layout, NULL);
1531 }
1532
1533 wxCoord width = w;
1534 wxCoord height = h;
1535
1536 width = wxCoord(width / m_scaleX);
1537 height = wxCoord(height / m_scaleY);
1538 CalcBoundingBox (x + width, y + height);
1539 CalcBoundingBox (x, y);
1540 }
1541
1542
1543 // TODO: There is an example of rotating text with GTK2 that would probably be
1544 // a better approach here:
1545 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1546
1547 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1548 {
1549 if (!m_window || text.empty())
1550 return;
1551
1552 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1553
1554 if ( wxIsNullDouble(angle) )
1555 {
1556 DrawText(text, x, y);
1557 return;
1558 }
1559
1560 wxCoord w;
1561 wxCoord h;
1562
1563 // TODO: implement later without GdkFont for GTK 2.0
1564 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1565
1566 // draw the string normally
1567 wxBitmap src(w, h);
1568 wxMemoryDC dc;
1569 dc.SelectObject(src);
1570 dc.SetFont(GetFont());
1571 dc.SetBackground(*wxBLACK_BRUSH);
1572 dc.SetBrush(*wxBLACK_BRUSH);
1573 dc.Clear();
1574 dc.SetTextForeground( *wxWHITE );
1575 dc.DrawText(text, 0, 0);
1576 dc.SelectObject(wxNullBitmap);
1577
1578 // Calculate the size of the rotated bounding box.
1579 double rad = DegToRad(angle);
1580 double dx = cos(rad),
1581 dy = sin(rad);
1582
1583 // the rectngle vertices are counted clockwise with the first one being at
1584 // (0, 0) (or, rather, at (x, y))
1585 double x2 = w*dx,
1586 y2 = -w*dy; // y axis points to the bottom, hence minus
1587 double x4 = h*dy,
1588 y4 = h*dx;
1589 double x3 = x4 + x2,
1590 y3 = y4 + y2;
1591
1592 // calc max and min
1593 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1594 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1595 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1596 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1597
1598
1599 wxImage image = src.ConvertToImage();
1600
1601 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1602 m_textForegroundColour.Green(),
1603 m_textForegroundColour.Blue() );
1604 image = image.Rotate( rad, wxPoint(0,0) );
1605
1606 int i_angle = (int) angle;
1607 i_angle = i_angle % 360;
1608 if (i_angle < 0)
1609 i_angle += 360;
1610 int xoffset = 0;
1611 if ((i_angle >= 90.0) && (i_angle < 270.0))
1612 xoffset = image.GetWidth();
1613 int yoffset = 0;
1614 if ((i_angle >= 0.0) && (i_angle < 180.0))
1615 yoffset = image.GetHeight();
1616
1617 if ((i_angle >= 0) && (i_angle < 90))
1618 yoffset -= (int)( cos(rad)*h );
1619 if ((i_angle >= 90) && (i_angle < 180))
1620 xoffset -= (int)( sin(rad)*h );
1621 if ((i_angle >= 180) && (i_angle < 270))
1622 yoffset -= (int)( cos(rad)*h );
1623 if ((i_angle >= 270) && (i_angle < 360))
1624 xoffset -= (int)( sin(rad)*h );
1625
1626 int i_x = x - xoffset;
1627 int i_y = y - yoffset;
1628
1629 src = image;
1630 DoDrawBitmap( src, i_x, i_y, true );
1631
1632
1633 // it would be better to draw with non underlined font and draw the line
1634 // manually here (it would be more straight...)
1635 #if 0
1636 if ( m_font.GetUnderlined() )
1637 {
1638 gdk_draw_line( m_window, m_textGC,
1639 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1640 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1641 }
1642 #endif // 0
1643
1644 // update the bounding box
1645 CalcBoundingBox(x + minX, y + minY);
1646 CalcBoundingBox(x + maxX, y + maxY);
1647 }
1648
1649 void wxWindowDC::DoGetTextExtent(const wxString &string,
1650 wxCoord *width, wxCoord *height,
1651 wxCoord *descent, wxCoord *externalLeading,
1652 wxFont *theFont) const
1653 {
1654 if ( width )
1655 *width = 0;
1656 if ( height )
1657 *height = 0;
1658 if ( descent )
1659 *descent = 0;
1660 if ( externalLeading )
1661 *externalLeading = 0;
1662
1663 if (string.empty())
1664 return;
1665
1666 // ensure that theFont is always non-NULL
1667 if ( !theFont || !theFont->Ok() )
1668 theFont = wx_const_cast(wxFont *, &m_font);
1669
1670 // and use it if it's valid
1671 if ( theFont->Ok() )
1672 {
1673 pango_layout_set_font_description
1674 (
1675 m_layout,
1676 theFont->GetNativeFontInfo()->description
1677 );
1678 }
1679
1680 // Set layout's text
1681 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1682 if ( !dataUTF8 )
1683 {
1684 // hardly ideal, but what else can we do if conversion failed?
1685 return;
1686 }
1687
1688 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1689
1690 if (descent)
1691 {
1692 int h;
1693 pango_layout_get_pixel_size( m_layout, width, &h );
1694 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1695 int baseline = pango_layout_iter_get_baseline(iter);
1696 pango_layout_iter_free(iter);
1697 *descent = h - PANGO_PIXELS(baseline);
1698
1699 if (height)
1700 *height = (wxCoord) h;
1701 }
1702 else
1703 {
1704 pango_layout_get_pixel_size( m_layout, width, height );
1705 }
1706
1707 // Reset old font description
1708 if (theFont)
1709 pango_layout_set_font_description( m_layout, m_fontdesc );
1710 }
1711
1712 wxCoord wxWindowDC::GetCharWidth() const
1713 {
1714 pango_layout_set_text( m_layout, "H", 1 );
1715 int w;
1716 pango_layout_get_pixel_size( m_layout, &w, NULL );
1717 return w;
1718 }
1719
1720 wxCoord wxWindowDC::GetCharHeight() const
1721 {
1722 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1723 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1724 }
1725
1726 void wxWindowDC::Clear()
1727 {
1728 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1729
1730 if (!m_window) return;
1731
1732 // VZ: the code below results in infinite recursion and crashes when
1733 // dc.Clear() is done from OnPaint() so I disable it for now.
1734 // I don't know what the correct fix is but Clear() surely should not
1735 // reenter OnPaint()!
1736 #if 0
1737 /* - we either are a memory dc or have a window as the
1738 owner. anything else shouldn't happen.
1739 - we don't use gdk_window_clear() as we don't set
1740 the window's background colour anymore. it is too
1741 much pain to keep the DC's and the window's back-
1742 ground colour in synch. */
1743
1744 if (m_owner)
1745 {
1746 m_owner->Clear();
1747 return;
1748 }
1749
1750 if (m_isMemDC)
1751 {
1752 int width,height;
1753 GetSize( &width, &height );
1754 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1755 return;
1756 }
1757 #else // 1
1758 int width,height;
1759 GetSize( &width, &height );
1760 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1761 #endif // 0/1
1762 }
1763
1764 void wxWindowDC::SetFont( const wxFont &font )
1765 {
1766 m_font = font;
1767
1768 if (m_font.Ok())
1769 {
1770 if (m_fontdesc)
1771 pango_font_description_free( m_fontdesc );
1772
1773 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1774
1775
1776 if (m_owner)
1777 {
1778 PangoContext *oldContext = m_context;
1779
1780 m_context = m_owner->GtkGetPangoDefaultContext();
1781
1782 // If we switch back/forth between different contexts
1783 // we also have to create a new layout. I think so,
1784 // at least, and it doesn't hurt to do it.
1785 if (oldContext != m_context)
1786 {
1787 if (m_layout)
1788 g_object_unref (m_layout);
1789
1790 m_layout = pango_layout_new( m_context );
1791 }
1792 }
1793
1794 pango_layout_set_font_description( m_layout, m_fontdesc );
1795 }
1796 }
1797
1798 void wxWindowDC::SetPen( const wxPen &pen )
1799 {
1800 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1801
1802 if (m_pen == pen) return;
1803
1804 m_pen = pen;
1805
1806 if (!m_pen.Ok()) return;
1807
1808 if (!m_window) return;
1809
1810 gint width = m_pen.GetWidth();
1811 if (width <= 0)
1812 {
1813 // CMB: if width is non-zero scale it with the dc
1814 width = 1;
1815 }
1816 else
1817 {
1818 // X doesn't allow different width in x and y and so we take
1819 // the average
1820 double w = 0.5 +
1821 ( fabs((double) XLOG2DEVREL(width)) +
1822 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1823 width = (int)w;
1824 if ( !width )
1825 {
1826 // width can't be 0 or an internal GTK error occurs inside
1827 // gdk_gc_set_dashes() below
1828 width = 1;
1829 }
1830 }
1831
1832 static const wxGTKDash dotted[] = {1, 1};
1833 static const wxGTKDash short_dashed[] = {2, 2};
1834 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1835 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1836
1837 // We express dash pattern in pen width unit, so we are
1838 // independent of zoom factor and so on...
1839 int req_nb_dash;
1840 const wxGTKDash *req_dash;
1841
1842 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1843 switch (m_pen.GetStyle())
1844 {
1845 case wxUSER_DASH:
1846 {
1847 lineStyle = GDK_LINE_ON_OFF_DASH;
1848 req_nb_dash = m_pen.GetDashCount();
1849 req_dash = (wxGTKDash*)m_pen.GetDash();
1850 break;
1851 }
1852 case wxDOT:
1853 {
1854 lineStyle = GDK_LINE_ON_OFF_DASH;
1855 req_nb_dash = 2;
1856 req_dash = dotted;
1857 break;
1858 }
1859 case wxLONG_DASH:
1860 {
1861 lineStyle = GDK_LINE_ON_OFF_DASH;
1862 req_nb_dash = 2;
1863 req_dash = wxCoord_dashed;
1864 break;
1865 }
1866 case wxSHORT_DASH:
1867 {
1868 lineStyle = GDK_LINE_ON_OFF_DASH;
1869 req_nb_dash = 2;
1870 req_dash = short_dashed;
1871 break;
1872 }
1873 case wxDOT_DASH:
1874 {
1875 // lineStyle = GDK_LINE_DOUBLE_DASH;
1876 lineStyle = GDK_LINE_ON_OFF_DASH;
1877 req_nb_dash = 4;
1878 req_dash = dotted_dashed;
1879 break;
1880 }
1881
1882 case wxTRANSPARENT:
1883 case wxSTIPPLE_MASK_OPAQUE:
1884 case wxSTIPPLE:
1885 case wxSOLID:
1886 default:
1887 {
1888 lineStyle = GDK_LINE_SOLID;
1889 req_dash = (wxGTKDash*)NULL;
1890 req_nb_dash = 0;
1891 break;
1892 }
1893 }
1894
1895 if (req_dash && req_nb_dash)
1896 {
1897 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1898 if (real_req_dash)
1899 {
1900 for (int i = 0; i < req_nb_dash; i++)
1901 real_req_dash[i] = req_dash[i] * width;
1902 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1903 delete[] real_req_dash;
1904 }
1905 else
1906 {
1907 // No Memory. We use non-scaled dash pattern...
1908 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1909 }
1910 }
1911
1912 GdkCapStyle capStyle = GDK_CAP_ROUND;
1913 switch (m_pen.GetCap())
1914 {
1915 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1916 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1917 case wxCAP_ROUND:
1918 default:
1919 {
1920 if (width <= 1)
1921 {
1922 width = 0;
1923 capStyle = GDK_CAP_NOT_LAST;
1924 }
1925 else
1926 {
1927 capStyle = GDK_CAP_ROUND;
1928 }
1929 break;
1930 }
1931 }
1932
1933 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1934 switch (m_pen.GetJoin())
1935 {
1936 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1937 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1938 case wxJOIN_ROUND:
1939 default: { joinStyle = GDK_JOIN_ROUND; break; }
1940 }
1941
1942 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1943
1944 m_pen.GetColour().CalcPixel( m_cmap );
1945 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1946 }
1947
1948 void wxWindowDC::SetBrush( const wxBrush &brush )
1949 {
1950 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1951
1952 if (m_brush == brush) return;
1953
1954 m_brush = brush;
1955
1956 if (!m_brush.Ok()) return;
1957
1958 if (!m_window) return;
1959
1960 m_brush.GetColour().CalcPixel( m_cmap );
1961 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1962
1963 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
1964
1965 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
1966 {
1967 if (m_brush.GetStipple()->GetDepth() != 1)
1968 {
1969 gdk_gc_set_fill( m_brushGC, GDK_TILED );
1970 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1971 }
1972 else
1973 {
1974 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1975 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1976 }
1977 }
1978
1979 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1980 {
1981 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
1982 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
1983 }
1984
1985 if (m_brush.IsHatch())
1986 {
1987 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1988 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
1989 gdk_gc_set_stipple( m_brushGC, hatches[num] );
1990 }
1991 }
1992
1993 void wxWindowDC::SetBackground( const wxBrush &brush )
1994 {
1995 /* CMB 21/7/98: Added SetBackground. Sets background brush
1996 * for Clear() and bg colour for shapes filled with cross-hatch brush */
1997
1998 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1999
2000 if (m_backgroundBrush == brush) return;
2001
2002 m_backgroundBrush = brush;
2003
2004 if (!m_backgroundBrush.Ok()) return;
2005
2006 if (!m_window) return;
2007
2008 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2009 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2010 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2011 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2012 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2013
2014 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2015
2016 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2017 {
2018 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2019 {
2020 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2021 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2022 }
2023 else
2024 {
2025 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2026 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2027 }
2028 }
2029
2030 if (m_backgroundBrush.IsHatch())
2031 {
2032 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2033 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2034 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2035 }
2036 }
2037
2038 void wxWindowDC::SetLogicalFunction( int function )
2039 {
2040 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2041
2042 if (m_logicalFunction == function)
2043 return;
2044
2045 // VZ: shouldn't this be a CHECK?
2046 if (!m_window)
2047 return;
2048
2049 GdkFunction mode;
2050 switch (function)
2051 {
2052 case wxXOR: mode = GDK_XOR; break;
2053 case wxINVERT: mode = GDK_INVERT; break;
2054 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2055 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2056 case wxCLEAR: mode = GDK_CLEAR; break;
2057 case wxSET: mode = GDK_SET; break;
2058 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2059 case wxAND: mode = GDK_AND; break;
2060 case wxOR: mode = GDK_OR; break;
2061 case wxEQUIV: mode = GDK_EQUIV; break;
2062 case wxNAND: mode = GDK_NAND; break;
2063 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2064 case wxCOPY: mode = GDK_COPY; break;
2065 case wxNO_OP: mode = GDK_NOOP; break;
2066 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2067
2068 // unsupported by GTK
2069 case wxNOR: mode = GDK_COPY; break;
2070 default:
2071 wxFAIL_MSG( wxT("unsupported logical function") );
2072 mode = GDK_COPY;
2073 }
2074
2075 m_logicalFunction = function;
2076
2077 gdk_gc_set_function( m_penGC, mode );
2078 gdk_gc_set_function( m_brushGC, mode );
2079
2080 // to stay compatible with wxMSW, we don't apply ROPs to the text
2081 // operations (i.e. DrawText/DrawRotatedText).
2082 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2083 gdk_gc_set_function( m_textGC, mode );
2084 }
2085
2086 void wxWindowDC::SetTextForeground( const wxColour &col )
2087 {
2088 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2089
2090 // don't set m_textForegroundColour to an invalid colour as we'd crash
2091 // later then (we use m_textForegroundColour.GetColor() without checking
2092 // in a few places)
2093 if ( !col.Ok() || (m_textForegroundColour == col) )
2094 return;
2095
2096 m_textForegroundColour = col;
2097
2098 if ( m_window )
2099 {
2100 m_textForegroundColour.CalcPixel( m_cmap );
2101 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2102 }
2103 }
2104
2105 void wxWindowDC::SetTextBackground( const wxColour &col )
2106 {
2107 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2108
2109 // same as above
2110 if ( !col.Ok() || (m_textBackgroundColour == col) )
2111 return;
2112
2113 m_textBackgroundColour = col;
2114
2115 if ( m_window )
2116 {
2117 m_textBackgroundColour.CalcPixel( m_cmap );
2118 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2119 }
2120 }
2121
2122 void wxWindowDC::SetBackgroundMode( int mode )
2123 {
2124 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2125
2126 m_backgroundMode = mode;
2127
2128 if (!m_window) return;
2129
2130 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2131 // transparent/solid background mode
2132
2133 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2134 {
2135 gdk_gc_set_fill( m_brushGC,
2136 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2137 }
2138 }
2139
2140 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2141 {
2142 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2143 }
2144
2145 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2146 {
2147 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2148
2149 if (!m_window) return;
2150
2151 wxRect rect;
2152 rect.x = XLOG2DEV(x);
2153 rect.y = YLOG2DEV(y);
2154 rect.width = XLOG2DEVREL(width);
2155 rect.height = YLOG2DEVREL(height);
2156
2157 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2158 {
2159 rect.x -= rect.width;
2160 }
2161
2162 if (!m_currentClippingRegion.IsNull())
2163 m_currentClippingRegion.Intersect( rect );
2164 else
2165 m_currentClippingRegion.Union( rect );
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::DoSetClippingRegionAsRegion( const wxRegion &region )
2183 {
2184 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2185
2186 if (region.Empty())
2187 {
2188 DestroyClippingRegion();
2189 return;
2190 }
2191
2192 if (!m_window) return;
2193
2194 if (!m_currentClippingRegion.IsNull())
2195 m_currentClippingRegion.Intersect( region );
2196 else
2197 m_currentClippingRegion.Union( region );
2198
2199 #if USE_PAINT_REGION
2200 if (!m_paintClippingRegion.IsNull())
2201 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2202 #endif
2203
2204 wxCoord xx, yy, ww, hh;
2205 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2206 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2207
2208 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2209 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2210 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2211 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2212 }
2213
2214 void wxWindowDC::DestroyClippingRegion()
2215 {
2216 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2217
2218 wxDC::DestroyClippingRegion();
2219
2220 m_currentClippingRegion.Clear();
2221
2222 #if USE_PAINT_REGION
2223 if (!m_paintClippingRegion.IsEmpty())
2224 m_currentClippingRegion.Union( m_paintClippingRegion );
2225 #endif
2226
2227 if (!m_window) return;
2228
2229 if (m_currentClippingRegion.IsEmpty())
2230 {
2231 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2232 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2233 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2234 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2235 }
2236 else
2237 {
2238 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2239 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2240 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2241 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2242 }
2243 }
2244
2245 void wxWindowDC::Destroy()
2246 {
2247 if (m_penGC) wxFreePoolGC( m_penGC );
2248 m_penGC = (GdkGC*) NULL;
2249 if (m_brushGC) wxFreePoolGC( m_brushGC );
2250 m_brushGC = (GdkGC*) NULL;
2251 if (m_textGC) wxFreePoolGC( m_textGC );
2252 m_textGC = (GdkGC*) NULL;
2253 if (m_bgGC) wxFreePoolGC( m_bgGC );
2254 m_bgGC = (GdkGC*) NULL;
2255 }
2256
2257 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2258 {
2259 m_deviceOriginX = x;
2260 m_deviceOriginY = y;
2261
2262 ComputeScaleAndOrigin();
2263 }
2264
2265 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2266 {
2267 m_signX = (xLeftRight ? 1 : -1);
2268 m_signY = (yBottomUp ? -1 : 1);
2269
2270 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2271 m_signX = -m_signX;
2272
2273 ComputeScaleAndOrigin();
2274 }
2275
2276 void wxWindowDC::ComputeScaleAndOrigin()
2277 {
2278 const wxRealPoint origScale(m_scaleX, m_scaleY);
2279
2280 wxDC::ComputeScaleAndOrigin();
2281
2282 // if scale has changed call SetPen to recalulate the line width
2283 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2284 {
2285 // this is a bit artificial, but we need to force wxDC to think the pen
2286 // has changed
2287 wxPen pen = m_pen;
2288 m_pen = wxNullPen;
2289 SetPen( pen );
2290 }
2291 }
2292
2293 // Resolution in pixels per logical inch
2294 wxSize wxWindowDC::GetPPI() const
2295 {
2296 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2297 }
2298
2299 int wxWindowDC::GetDepth() const
2300 {
2301 return gdk_drawable_get_depth(m_window);
2302 }
2303
2304
2305 //-----------------------------------------------------------------------------
2306 // wxPaintDC
2307 //-----------------------------------------------------------------------------
2308
2309 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2310
2311 // Limit the paint region to the window size. Sometimes
2312 // the paint region is too big, and this risks X11 errors
2313 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2314 {
2315 wxRect originalRect = region.GetBox();
2316 wxRect rect(originalRect);
2317 if (rect.width + rect.x > sz.x)
2318 rect.width = sz.x - rect.x;
2319 if (rect.height + rect.y > sz.y)
2320 rect.height = sz.y - rect.y;
2321 if (rect != originalRect)
2322 {
2323 region = wxRegion(rect);
2324 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2325 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2326 rect.x, rect.y, rect.width, rect.height);
2327 }
2328 }
2329
2330 wxPaintDC::wxPaintDC( wxWindow *win )
2331 : wxClientDC( win )
2332 {
2333 #if USE_PAINT_REGION
2334 if (!win->m_clipPaintRegion)
2335 return;
2336
2337 wxSize sz = win->GetSize();
2338 m_paintClippingRegion = win->m_nativeUpdateRegion;
2339 wxLimitRegionToSize(m_paintClippingRegion, sz);
2340
2341 GdkRegion *region = m_paintClippingRegion.GetRegion();
2342 if ( region )
2343 {
2344 m_currentClippingRegion.Union( m_paintClippingRegion );
2345 wxLimitRegionToSize(m_currentClippingRegion, sz);
2346
2347 if (sz.x <= 0 || sz.y <= 0)
2348 return ;
2349
2350 gdk_gc_set_clip_region( m_penGC, region );
2351 gdk_gc_set_clip_region( m_brushGC, region );
2352 gdk_gc_set_clip_region( m_textGC, region );
2353 gdk_gc_set_clip_region( m_bgGC, region );
2354 }
2355 #endif // USE_PAINT_REGION
2356 }
2357
2358 //-----------------------------------------------------------------------------
2359 // wxClientDC
2360 //-----------------------------------------------------------------------------
2361
2362 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2363
2364 wxClientDC::wxClientDC( wxWindow *win )
2365 : wxWindowDC( win )
2366 {
2367 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2368
2369 #ifdef __WXUNIVERSAL__
2370 wxPoint ptOrigin = win->GetClientAreaOrigin();
2371 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2372 wxSize size = win->GetClientSize();
2373 SetClippingRegion(wxPoint(0, 0), size);
2374 #endif // __WXUNIVERSAL__
2375 }
2376
2377 void wxClientDC::DoGetSize(int *width, int *height) const
2378 {
2379 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2380
2381 m_owner->GetClientSize( width, height );
2382 }
2383
2384 // ----------------------------------------------------------------------------
2385 // wxDCModule
2386 // ----------------------------------------------------------------------------
2387
2388 class wxDCModule : public wxModule
2389 {
2390 public:
2391 bool OnInit();
2392 void OnExit();
2393
2394 private:
2395 DECLARE_DYNAMIC_CLASS(wxDCModule)
2396 };
2397
2398 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2399
2400 bool wxDCModule::OnInit()
2401 {
2402 wxInitGCPool();
2403 return true;
2404 }
2405
2406 void wxDCModule::OnExit()
2407 {
2408 wxCleanUpGCPool();
2409 }
wxWidgets (Impactor)