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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
335 int scroll_lines = 0;
336 int scroll_step = 0;
337
338 // Are we using scrolling?
339 wxScrollHelper *sh = (wxScrollHelper*) m_owner->GetScrollHelper();
340 if (sh)
341 {
342 scroll_lines = sh->GetScrollLines(wxHORIZONTAL);
343 sh->GetScrollPixelsPerUnit( &scroll_step, NULL );
344 }
345
346 if (scroll_lines == 0)
347 {
348 int client_width = m_owner->GetClientSize().x;
349 m_deviceOriginX = client_width;
350 }
351 else
352 {
353 // We cannot use just the virtual size here, because
354 // the virtual size may be less than the visible area
355 // due to rounding errors of the scroll steps. If the
356 // horizontal scroll step is 10 pixels and the virtual
357 // area is 97 pixels, we should be able to see or scroll
358 // to 100 pixels, so the origin is at -100, not -97.
359 int client_width = sh->GetTargetWindow()->GetClientSize().x;
360 int virtual_size = m_owner->GetVirtualSize().x;
361 int steps = (virtual_size + scroll_step - 1) / scroll_step;
362 int width = steps * scroll_step + (client_width % scroll_step);
363 m_deviceOriginX = width;
364 }
365 }
366 }
367
368 wxWindowDC::~wxWindowDC()
369 {
370 Destroy();
371
372 if (m_layout)
373 g_object_unref (m_layout);
374 if (m_fontdesc)
375 pango_font_description_free( m_fontdesc );
376 }
377
378 void wxWindowDC::SetUpDC()
379 {
380 m_ok = true;
381
382 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
383
384 if (m_isScreenDC)
385 {
386 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
387 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
388 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
389 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
390 }
391 else
392 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
393 {
394 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
395 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
396 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
397 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
398 }
399 else
400 {
401 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
402 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
403 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
404 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
405 }
406
407 /* background colour */
408 m_backgroundBrush = *wxWHITE_BRUSH;
409 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
410 #ifdef __WXGTK24__
411 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
412 #else
413 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
414 #endif
415
416 /* m_textGC */
417 m_textForegroundColour.CalcPixel( m_cmap );
418 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
419
420 m_textBackgroundColour.CalcPixel( m_cmap );
421 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
422
423 gdk_gc_set_fill( m_textGC, GDK_SOLID );
424
425 /* m_penGC */
426 m_pen.GetColour().CalcPixel( m_cmap );
427 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
428 gdk_gc_set_background( m_penGC, bg_col );
429
430 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
431
432 /* m_brushGC */
433 m_brush.GetColour().CalcPixel( m_cmap );
434 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
435 gdk_gc_set_background( m_brushGC, bg_col );
436
437 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
438
439 /* m_bgGC */
440 gdk_gc_set_background( m_bgGC, bg_col );
441 gdk_gc_set_foreground( m_bgGC, bg_col );
442
443 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
444
445 /* ROPs */
446 gdk_gc_set_function( m_textGC, GDK_COPY );
447 gdk_gc_set_function( m_brushGC, GDK_COPY );
448 gdk_gc_set_function( m_penGC, GDK_COPY );
449
450 /* clipping */
451 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
452 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
453 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
454 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
455
456 if (!hatch_bitmap)
457 {
458 hatch_bitmap = hatches;
459 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
460 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
461 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
462 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
463 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
464 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
465 }
466 }
467
468 void wxWindowDC::DoGetSize( int* width, int* height ) const
469 {
470 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
471
472 m_owner->GetSize(width, height);
473 }
474
475 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
476 const wxColour & col, int style);
477
478 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
479 const wxColour& col, int style)
480 {
481 return wxDoFloodFill(this, x, y, col, style);
482 }
483
484 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
485 {
486 // Generic (and therefore rather inefficient) method.
487 // Could be improved.
488 wxMemoryDC memdc;
489 wxBitmap bitmap(1, 1);
490 memdc.SelectObject(bitmap);
491 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
492 memdc.SelectObject(wxNullBitmap);
493
494 wxImage image = bitmap.ConvertToImage();
495 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
496 return true;
497 }
498
499 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
500 {
501 wxCHECK_RET( Ok(), wxT("invalid window dc") );
502
503 if (m_pen.GetStyle() != wxTRANSPARENT)
504 {
505 if (m_window)
506 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
507
508 CalcBoundingBox(x1, y1);
509 CalcBoundingBox(x2, y2);
510 }
511 }
512
513 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
514 {
515 wxCHECK_RET( Ok(), wxT("invalid window dc") );
516
517 if (m_pen.GetStyle() != wxTRANSPARENT)
518 {
519 int w = 0;
520 int h = 0;
521 GetSize( &w, &h );
522 wxCoord xx = XLOG2DEV(x);
523 wxCoord yy = YLOG2DEV(y);
524 if (m_window)
525 {
526 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
527 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
528 }
529 }
530 }
531
532 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
533 wxCoord xc, wxCoord yc )
534 {
535 wxCHECK_RET( Ok(), wxT("invalid window dc") );
536
537 wxCoord xx1 = XLOG2DEV(x1);
538 wxCoord yy1 = YLOG2DEV(y1);
539 wxCoord xx2 = XLOG2DEV(x2);
540 wxCoord yy2 = YLOG2DEV(y2);
541 wxCoord xxc = XLOG2DEV(xc);
542 wxCoord yyc = YLOG2DEV(yc);
543 double dx = xx1 - xxc;
544 double dy = yy1 - yyc;
545 double radius = sqrt((double)(dx*dx+dy*dy));
546 wxCoord r = (wxCoord)radius;
547 double radius1, radius2;
548
549 if (xx1 == xx2 && yy1 == yy2)
550 {
551 radius1 = 0.0;
552 radius2 = 360.0;
553 }
554 else if ( wxIsNullDouble(radius) )
555 {
556 radius1 =
557 radius2 = 0.0;
558 }
559 else
560 {
561 radius1 = (xx1 - xxc == 0) ?
562 (yy1 - yyc < 0) ? 90.0 : -90.0 :
563 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
564 radius2 = (xx2 - xxc == 0) ?
565 (yy2 - yyc < 0) ? 90.0 : -90.0 :
566 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
567 }
568 wxCoord alpha1 = wxCoord(radius1 * 64.0);
569 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
570 while (alpha2 <= 0) alpha2 += 360*64;
571 while (alpha1 > 360*64) alpha1 -= 360*64;
572
573 if (m_window)
574 {
575 if (m_brush.GetStyle() != wxTRANSPARENT)
576 {
577 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
578 {
579 gdk_gc_set_ts_origin( m_textGC,
580 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
581 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
582 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
583 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
584 } else
585 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
586 {
587 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
588 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
589 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
590 } else
591 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
592 {
593 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
594 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
595 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
596 } else
597 if (m_brush.GetStyle() == wxSTIPPLE)
598 {
599 gdk_gc_set_ts_origin( m_brushGC,
600 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
601 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
602 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
603 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
604 }
605 else
606 {
607 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
608 }
609 }
610
611 if (m_pen.GetStyle() != wxTRANSPARENT)
612 {
613 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
614
615 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
616 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
617 }
618 }
619
620 CalcBoundingBox (x1, y1);
621 CalcBoundingBox (x2, y2);
622 }
623
624 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
625 {
626 wxCHECK_RET( Ok(), wxT("invalid window dc") );
627
628 wxCoord xx = XLOG2DEV(x);
629 wxCoord yy = YLOG2DEV(y);
630 wxCoord ww = m_signX * XLOG2DEVREL(width);
631 wxCoord hh = m_signY * YLOG2DEVREL(height);
632
633 // CMB: handle -ve width and/or height
634 if (ww < 0) { ww = -ww; xx = xx - ww; }
635 if (hh < 0) { hh = -hh; yy = yy - hh; }
636
637 if (m_window)
638 {
639 wxCoord start = wxCoord(sa * 64.0);
640 wxCoord end = wxCoord((ea-sa) * 64.0);
641
642 if (m_brush.GetStyle() != wxTRANSPARENT)
643 {
644 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
645 {
646 gdk_gc_set_ts_origin( m_textGC,
647 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
648 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
649 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
650 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
651 } else
652 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
653 {
654 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
655 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
656 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
657 } else
658 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
659 {
660 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
661 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
662 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
663 } else
664 if (m_brush.GetStyle() == wxSTIPPLE)
665 {
666 gdk_gc_set_ts_origin( m_brushGC,
667 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
668 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
669 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
670 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
671 }
672 else
673 {
674 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
675 }
676 }
677
678 if (m_pen.GetStyle() != wxTRANSPARENT)
679 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
680 }
681
682 CalcBoundingBox (x, y);
683 CalcBoundingBox (x + width, y + height);
684 }
685
686 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
687 {
688 wxCHECK_RET( Ok(), wxT("invalid window dc") );
689
690 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
691 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
692
693 CalcBoundingBox (x, y);
694 }
695
696 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
697 {
698 wxCHECK_RET( Ok(), wxT("invalid window dc") );
699
700 if (m_pen.GetStyle() == wxTRANSPARENT) return;
701 if (n <= 0) return;
702
703 //Check, if scaling is necessary
704 const bool doScale =
705 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
706
707 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
708 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
709
710 if (doScale)
711 gpts = new GdkPoint[n];
712
713 for (int i = 0; i < n; i++)
714 {
715 if (doScale)
716 {
717 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
718 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
719 }
720 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
721 }
722
723 if (m_window)
724 gdk_draw_lines( m_window, m_penGC, gpts, n);
725
726 if (doScale)
727 delete[] gpts;
728 }
729
730 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
731 {
732 wxCHECK_RET( Ok(), wxT("invalid window dc") );
733
734 if (n <= 0) return;
735
736 //Check, if scaling is necessary
737 const bool doScale =
738 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
739
740 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
741 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
742
743 if (doScale)
744 gdkpoints = new GdkPoint[n];
745
746 int i;
747 for (i = 0 ; i < n ; i++)
748 {
749 if (doScale)
750 {
751 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
752 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
753 }
754 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
755 }
756
757 if (m_window)
758 {
759 if (m_brush.GetStyle() != wxTRANSPARENT)
760 {
761 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
762 {
763 gdk_gc_set_ts_origin( m_textGC,
764 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
765 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
766 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
767 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
768 } else
769 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
770 {
771 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
772 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
773 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
774 } else
775 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
776 {
777 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
778 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
779 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
780 } else
781 if (m_brush.GetStyle() == wxSTIPPLE)
782 {
783 gdk_gc_set_ts_origin( m_brushGC,
784 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
785 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
786 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
787 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
788 }
789 else
790 {
791 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
792 }
793 }
794
795 if (m_pen.GetStyle() != wxTRANSPARENT)
796 {
797 /*
798 for (i = 0 ; i < n ; i++)
799 {
800 gdk_draw_line( m_window, m_penGC,
801 gdkpoints[i%n].x,
802 gdkpoints[i%n].y,
803 gdkpoints[(i+1)%n].x,
804 gdkpoints[(i+1)%n].y);
805 }
806 */
807 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
808
809 }
810 }
811
812 if (doScale)
813 delete[] gdkpoints;
814 }
815
816 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
817 {
818 wxCHECK_RET( Ok(), wxT("invalid window dc") );
819
820 wxCoord xx = XLOG2DEV(x);
821 wxCoord yy = YLOG2DEV(y);
822 wxCoord ww = m_signX * XLOG2DEVREL(width);
823 wxCoord hh = m_signY * YLOG2DEVREL(height);
824
825 // CMB: draw nothing if transformed w or h is 0
826 if (ww == 0 || hh == 0) return;
827
828 // CMB: handle -ve width and/or height
829 if (ww < 0) { ww = -ww; xx = xx - ww; }
830 if (hh < 0) { hh = -hh; yy = yy - hh; }
831
832 if (m_window)
833 {
834 if (m_brush.GetStyle() != wxTRANSPARENT)
835 {
836 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
837 {
838 gdk_gc_set_ts_origin( m_textGC,
839 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
840 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
841 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
842 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
843 } else
844 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
845 {
846 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
847 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
848 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
849 } else
850 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
851 {
852 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
853 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
854 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
855 } else
856 if (m_brush.GetStyle() == wxSTIPPLE)
857 {
858 gdk_gc_set_ts_origin( m_brushGC,
859 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
860 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
861 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
862 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
863 }
864 else
865 {
866 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
867 }
868 }
869
870 if (m_pen.GetStyle() != wxTRANSPARENT)
871 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
872 }
873
874 CalcBoundingBox( x, y );
875 CalcBoundingBox( x + width, y + height );
876 }
877
878 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
879 {
880 wxCHECK_RET( Ok(), wxT("invalid window dc") );
881
882 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
883
884 wxCoord xx = XLOG2DEV(x);
885 wxCoord yy = YLOG2DEV(y);
886 wxCoord ww = m_signX * XLOG2DEVREL(width);
887 wxCoord hh = m_signY * YLOG2DEVREL(height);
888 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
889
890 // CMB: handle -ve width and/or height
891 if (ww < 0) { ww = -ww; xx = xx - ww; }
892 if (hh < 0) { hh = -hh; yy = yy - hh; }
893
894 // CMB: if radius is zero use DrawRectangle() instead to avoid
895 // X drawing errors with small radii
896 if (rr == 0)
897 {
898 DrawRectangle( x, y, width, height );
899 return;
900 }
901
902 // CMB: draw nothing if transformed w or h is 0
903 if (ww == 0 || hh == 0) return;
904
905 // CMB: adjust size if outline is drawn otherwise the result is
906 // 1 pixel too wide and high
907 if (m_pen.GetStyle() != wxTRANSPARENT)
908 {
909 ww--;
910 hh--;
911 }
912
913 if (m_window)
914 {
915 // CMB: ensure dd is not larger than rectangle otherwise we
916 // get an hour glass shape
917 wxCoord dd = 2 * rr;
918 if (dd > ww) dd = ww;
919 if (dd > hh) dd = hh;
920 rr = dd / 2;
921
922 if (m_brush.GetStyle() != wxTRANSPARENT)
923 {
924 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
925 {
926 gdk_gc_set_ts_origin( m_textGC,
927 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
928 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
929 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
930 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
931 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
932 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
934 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
935 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
936 } else
937 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
938 {
939 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
940 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
941 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
942 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
946 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
947 } else
948 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
949 {
950 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
951 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
952 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
953 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
954 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
957 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
958 } else
959 if (m_brush.GetStyle() == wxSTIPPLE)
960 {
961 gdk_gc_set_ts_origin( m_brushGC,
962 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
963 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
964 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
965 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
966 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
967 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
970 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
971 }
972 else
973 {
974 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
975 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
976 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
977 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
979 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
980 }
981 }
982
983 if (m_pen.GetStyle() != wxTRANSPARENT)
984 {
985 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
986 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
987 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
988 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
989 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
990 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
992 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
993 }
994 }
995
996 // this ignores the radius
997 CalcBoundingBox( x, y );
998 CalcBoundingBox( x + width, y + height );
999 }
1000
1001 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1002 {
1003 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1004
1005 wxCoord xx = XLOG2DEV(x);
1006 wxCoord yy = YLOG2DEV(y);
1007 wxCoord ww = m_signX * XLOG2DEVREL(width);
1008 wxCoord hh = m_signY * YLOG2DEVREL(height);
1009
1010 // CMB: handle -ve width and/or height
1011 if (ww < 0) { ww = -ww; xx = xx - ww; }
1012 if (hh < 0) { hh = -hh; yy = yy - hh; }
1013
1014 if (m_window)
1015 {
1016 if (m_brush.GetStyle() != wxTRANSPARENT)
1017 {
1018 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1019 {
1020 gdk_gc_set_ts_origin( m_textGC,
1021 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1022 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1023 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1024 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1025 } else
1026 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1027 {
1028 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1029 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1030 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1031 } else
1032 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1033 {
1034 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1035 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1036 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1037 } else
1038 if (m_brush.GetStyle() == wxSTIPPLE)
1039 {
1040 gdk_gc_set_ts_origin( m_brushGC,
1041 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1042 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1043 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1044 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1045 }
1046 else
1047 {
1048 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1049 }
1050 }
1051
1052 if (m_pen.GetStyle() != wxTRANSPARENT)
1053 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1054 }
1055
1056 CalcBoundingBox( x, y );
1057 CalcBoundingBox( x + width, y + height );
1058 }
1059
1060 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1061 {
1062 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1063 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1064 }
1065
1066 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1067 wxCoord x, wxCoord y,
1068 bool useMask )
1069 {
1070 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1071
1072 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1073
1074 bool is_mono = bitmap.GetDepth() == 1;
1075
1076 // scale/translate size and position
1077 int xx = XLOG2DEV(x);
1078 int yy = YLOG2DEV(y);
1079
1080 int w = bitmap.GetWidth();
1081 int h = bitmap.GetHeight();
1082
1083 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1084 xx -= w;
1085
1086 CalcBoundingBox( x, y );
1087 CalcBoundingBox( x + w, y + h );
1088
1089 if (!m_window) return;
1090
1091 int ww = XLOG2DEVREL(w);
1092 int hh = YLOG2DEVREL(h);
1093
1094 // compare to current clipping region
1095 if (!m_currentClippingRegion.IsNull())
1096 {
1097 wxRegion tmp( xx,yy,ww,hh );
1098 tmp.Intersect( m_currentClippingRegion );
1099 if (tmp.IsEmpty())
1100 return;
1101 }
1102
1103 // scale bitmap if required
1104 wxBitmap use_bitmap = bitmap;
1105 if ((w != ww) || (h != hh))
1106 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1107
1108 #if !GTK_CHECK_VERSION(2,2,0)
1109 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1110 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1111 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1112 // and also creates the mask as a side-effect:
1113 use_bitmap.GetPixmap();
1114 #endif
1115
1116 // apply mask if any
1117 GdkBitmap *mask = (GdkBitmap *) NULL;
1118 if (useMask && use_bitmap.GetMask())
1119 mask = use_bitmap.GetMask()->GetBitmap();
1120
1121 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1122
1123 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1124
1125 if (mask != NULL)
1126 {
1127 if (!m_currentClippingRegion.IsNull())
1128 {
1129 GdkColor col;
1130 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1131 GdkGC *gc = gdk_gc_new( new_mask );
1132 col.pixel = 0;
1133 gdk_gc_set_foreground( gc, &col );
1134 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1135 col.pixel = 0;
1136 gdk_gc_set_background( gc, &col );
1137 col.pixel = 1;
1138 gdk_gc_set_foreground( gc, &col );
1139 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1140 gdk_gc_set_clip_origin( gc, -xx, -yy );
1141 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1142 gdk_gc_set_stipple( gc, mask );
1143 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1144 mask = new_mask;
1145 g_object_unref (gc);
1146 }
1147
1148 gdk_gc_set_clip_mask(use_gc, mask);
1149 gdk_gc_set_clip_origin(use_gc, xx, yy);
1150 }
1151
1152 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1153 // drawing a mono-bitmap (XBitmap) we use the current text GC
1154 if (is_mono)
1155 {
1156 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1157 GdkGC *gc = gdk_gc_new( bitmap2 );
1158 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1159 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1160 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1161
1162 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1163
1164 g_object_unref (bitmap2);
1165 g_object_unref (gc);
1166 }
1167 else
1168 {
1169 #if GTK_CHECK_VERSION(2,2,0)
1170 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1171 {
1172 gdk_draw_pixbuf(m_window, use_gc,
1173 use_bitmap.GetPixbuf(),
1174 0, 0, xx, yy, -1, -1,
1175 GDK_RGB_DITHER_NORMAL, xx, yy);
1176 }
1177 else
1178 #endif
1179 {
1180 gdk_draw_drawable(m_window, use_gc,
1181 use_bitmap.GetPixmap(),
1182 0, 0, xx, yy, -1, -1);
1183 }
1184 }
1185
1186 // remove mask again if any
1187 if (mask != NULL)
1188 {
1189 gdk_gc_set_clip_mask(use_gc, NULL);
1190 gdk_gc_set_clip_origin(use_gc, 0, 0);
1191 if (!m_currentClippingRegion.IsNull())
1192 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1193 if (new_mask != NULL)
1194 g_object_unref(new_mask);
1195 }
1196 }
1197
1198 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1199 wxCoord width, wxCoord height,
1200 wxDC *source,
1201 wxCoord xsrc, wxCoord ysrc,
1202 int logical_func,
1203 bool useMask,
1204 wxCoord xsrcMask, wxCoord ysrcMask )
1205 {
1206 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1207
1208 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1209
1210 if (!m_window) return false;
1211
1212 // transform the source DC coords to the device ones
1213 xsrc = source->LogicalToDeviceX(xsrc);
1214 ysrc = source->LogicalToDeviceY(ysrc);
1215
1216 wxClientDC *srcDC = (wxClientDC*)source;
1217 wxMemoryDC *memDC = (wxMemoryDC*)source;
1218
1219 bool use_bitmap_method = false;
1220 bool is_mono = false;
1221
1222 if (xsrcMask == -1 && ysrcMask == -1)
1223 {
1224 xsrcMask = xsrc;
1225 ysrcMask = ysrc;
1226 }
1227
1228 if (srcDC->m_isMemDC)
1229 {
1230 if (!memDC->m_selected.Ok()) return false;
1231
1232 is_mono = (memDC->m_selected.GetDepth() == 1);
1233
1234 // we use the "XCopyArea" way to copy a memory dc into
1235 // a different window if the memory dc BOTH
1236 // a) doesn't have any mask or its mask isn't used
1237 // b) it is clipped
1238 // c) is not 1-bit
1239
1240 if (useMask && (memDC->m_selected.GetMask()))
1241 {
1242 // we HAVE TO use the direct way for memory dcs
1243 // that have mask since the XCopyArea doesn't know
1244 // about masks
1245 use_bitmap_method = true;
1246 }
1247 else if (is_mono)
1248 {
1249 // we HAVE TO use the direct way for memory dcs
1250 // that are bitmaps because XCopyArea doesn't cope
1251 // with different bit depths
1252 use_bitmap_method = true;
1253 }
1254 else if ((xsrc == 0) && (ysrc == 0) &&
1255 (width == memDC->m_selected.GetWidth()) &&
1256 (height == memDC->m_selected.GetHeight()))
1257 {
1258 // we SHOULD use the direct way if all of the bitmap
1259 // in the memory dc is copied in which case XCopyArea
1260 // wouldn't be able able to boost performace by reducing
1261 // the area to be scaled
1262 use_bitmap_method = true;
1263 }
1264 }
1265
1266 CalcBoundingBox( xdest, ydest );
1267 CalcBoundingBox( xdest + width, ydest + height );
1268
1269 // scale/translate size and position
1270 wxCoord xx = XLOG2DEV(xdest);
1271 wxCoord yy = YLOG2DEV(ydest);
1272
1273 wxCoord ww = XLOG2DEVREL(width);
1274 wxCoord hh = YLOG2DEVREL(height);
1275
1276 // compare to current clipping region
1277 if (!m_currentClippingRegion.IsNull())
1278 {
1279 wxRegion tmp( xx,yy,ww,hh );
1280 tmp.Intersect( m_currentClippingRegion );
1281 if (tmp.IsEmpty())
1282 return true;
1283 }
1284
1285 int old_logical_func = m_logicalFunction;
1286 SetLogicalFunction( logical_func );
1287
1288 if (use_bitmap_method)
1289 {
1290 // scale/translate bitmap size
1291 wxCoord bm_width = memDC->m_selected.GetWidth();
1292 wxCoord bm_height = memDC->m_selected.GetHeight();
1293
1294 // Get clip coords for the bitmap. If we don't
1295 // use wxBitmap::Rescale(), which can clip the
1296 // bitmap, these are the same as the original
1297 // coordinates
1298 wxCoord cx = xx;
1299 wxCoord cy = yy;
1300 wxCoord cw = ww;
1301 wxCoord ch = hh;
1302
1303 // interpret userscale of src too
1304 double xsc,ysc;
1305 memDC->GetUserScale(&xsc,&ysc);
1306 bm_width = (int) (bm_width / xsc);
1307 bm_height = (int) (bm_height / ysc);
1308
1309 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1310 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1311
1312 // Scale bitmap if required
1313 wxBitmap use_bitmap = memDC->m_selected;
1314 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1315 {
1316 // This indicates that the blitting code below will get
1317 // a clipped bitmap and therefore needs to move the origin
1318 // accordingly
1319 wxRegion tmp( xx,yy,ww,hh );
1320 tmp.Intersect( m_currentClippingRegion );
1321 tmp.GetBox(cx,cy,cw,ch);
1322
1323 // Scale and clipped bitmap
1324 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1325 }
1326
1327 // apply mask if any
1328 GdkBitmap *mask = (GdkBitmap *) NULL;
1329 if (useMask && use_bitmap.GetMask())
1330 mask = use_bitmap.GetMask()->GetBitmap();
1331
1332 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1333
1334 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1335
1336 if (mask != NULL)
1337 {
1338 if (!m_currentClippingRegion.IsNull())
1339 {
1340 GdkColor col;
1341 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1342 GdkGC *gc = gdk_gc_new( new_mask );
1343 col.pixel = 0;
1344 gdk_gc_set_foreground( gc, &col );
1345 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1346 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1347 col.pixel = 0;
1348 gdk_gc_set_background( gc, &col );
1349 col.pixel = 1;
1350 gdk_gc_set_foreground( gc, &col );
1351 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1352 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1353 gdk_gc_set_clip_origin( gc, -cx, -cy );
1354 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1355 gdk_gc_set_stipple( gc, mask );
1356 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1357 mask = new_mask;
1358 g_object_unref (gc);
1359 }
1360
1361 gdk_gc_set_clip_mask(use_gc, mask);
1362 if (new_mask != NULL)
1363 gdk_gc_set_clip_origin(use_gc, cx, cy);
1364 else
1365 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1366 }
1367
1368 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1369 // drawing a mono-bitmap (XBitmap) we use the current text GC
1370
1371 if (is_mono)
1372 {
1373 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1374 GdkGC *gc = gdk_gc_new( bitmap );
1375 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1376 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1377 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1378
1379 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1380
1381 g_object_unref (bitmap);
1382 g_object_unref (gc);
1383 }
1384 else
1385 {
1386 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1387 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1388 }
1389
1390 // remove mask again if any
1391 if (mask != NULL)
1392 {
1393 gdk_gc_set_clip_mask(use_gc, NULL);
1394 gdk_gc_set_clip_origin(use_gc, 0, 0);
1395 if (!m_currentClippingRegion.IsNull())
1396 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1397 }
1398
1399 if (new_mask)
1400 g_object_unref (new_mask);
1401 }
1402 else // use_bitmap_method
1403 {
1404 if ((width != ww) || (height != hh))
1405 {
1406 // get clip coords
1407 wxRegion tmp( xx,yy,ww,hh );
1408 tmp.Intersect( m_currentClippingRegion );
1409 wxCoord cx,cy,cw,ch;
1410 tmp.GetBox(cx,cy,cw,ch);
1411
1412 // rescale bitmap
1413 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1414
1415 // draw scaled bitmap
1416 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1417 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1418 }
1419 else
1420 {
1421 // No scaling and not a memory dc with a mask either
1422
1423 // copy including child window contents
1424 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1425 gdk_draw_drawable( m_window, m_penGC,
1426 srcDC->GetWindow(),
1427 xsrc, ysrc, xx, yy,
1428 width, height );
1429 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1430 }
1431 }
1432
1433 SetLogicalFunction( old_logical_func );
1434
1435 return true;
1436 }
1437
1438 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1439 {
1440 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1441
1442 if (!m_window) return;
1443
1444 if (text.empty()) return;
1445
1446 x = XLOG2DEV(x);
1447 y = YLOG2DEV(y);
1448
1449 wxCHECK_RET( m_context, wxT("no Pango context") );
1450 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1451 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1452
1453 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1454
1455 const wxCharBuffer data = wxGTK_CONV( text );
1456 if ( !data )
1457 return;
1458 const size_t datalen = strlen(data);
1459 pango_layout_set_text( m_layout, data, datalen);
1460
1461 if (underlined)
1462 {
1463 PangoAttrList *attrs = pango_attr_list_new();
1464 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1465 a->start_index = 0;
1466 a->end_index = datalen;
1467 pango_attr_list_insert(attrs, a);
1468 pango_layout_set_attributes(m_layout, attrs);
1469 pango_attr_list_unref(attrs);
1470 }
1471
1472 int w,h;
1473
1474 if (fabs(m_scaleY - 1.0) > 0.00001)
1475 {
1476 // If there is a user or actually any scale applied to
1477 // the device context, scale the font.
1478
1479 // scale font description
1480 gint oldSize = pango_font_description_get_size( m_fontdesc );
1481 double size = oldSize;
1482 size = size * m_scaleY;
1483 pango_font_description_set_size( m_fontdesc, (gint)size );
1484
1485 // actually apply scaled font
1486 pango_layout_set_font_description( m_layout, m_fontdesc );
1487
1488 pango_layout_get_pixel_size( m_layout, &w, &h );
1489 if ( m_backgroundMode == wxSOLID )
1490 {
1491 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1492 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1493 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1494 }
1495
1496 // Draw layout.
1497 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1498 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1499 else
1500 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1501
1502 // reset unscaled size
1503 pango_font_description_set_size( m_fontdesc, oldSize );
1504
1505 // actually apply unscaled font
1506 pango_layout_set_font_description( m_layout, m_fontdesc );
1507 }
1508 else
1509 {
1510 pango_layout_get_pixel_size( m_layout, &w, &h );
1511 if ( m_backgroundMode == wxSOLID )
1512 {
1513 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1514 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1515 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1516 }
1517
1518 // Draw layout.
1519 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1520 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1521 else
1522 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1523 }
1524
1525 if (underlined)
1526 {
1527 // undo underline attributes setting:
1528 pango_layout_set_attributes(m_layout, NULL);
1529 }
1530
1531 wxCoord width = w;
1532 wxCoord height = h;
1533
1534 width = wxCoord(width / m_scaleX);
1535 height = wxCoord(height / m_scaleY);
1536 CalcBoundingBox (x + width, y + height);
1537 CalcBoundingBox (x, y);
1538 }
1539
1540
1541 // TODO: There is an example of rotating text with GTK2 that would probably be
1542 // a better approach here:
1543 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1544
1545 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1546 {
1547 if (!m_window || text.empty())
1548 return;
1549
1550 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1551
1552 if ( wxIsNullDouble(angle) )
1553 {
1554 DrawText(text, x, y);
1555 return;
1556 }
1557
1558 wxCoord w;
1559 wxCoord h;
1560
1561 // TODO: implement later without GdkFont for GTK 2.0
1562 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1563
1564 // draw the string normally
1565 wxBitmap src(w, h);
1566 wxMemoryDC dc;
1567 dc.SelectObject(src);
1568 dc.SetFont(GetFont());
1569 dc.SetBackground(*wxBLACK_BRUSH);
1570 dc.SetBrush(*wxBLACK_BRUSH);
1571 dc.Clear();
1572 dc.SetTextForeground( *wxWHITE );
1573 dc.DrawText(text, 0, 0);
1574 dc.SelectObject(wxNullBitmap);
1575
1576 // Calculate the size of the rotated bounding box.
1577 double rad = DegToRad(angle);
1578 double dx = cos(rad),
1579 dy = sin(rad);
1580
1581 // the rectngle vertices are counted clockwise with the first one being at
1582 // (0, 0) (or, rather, at (x, y))
1583 double x2 = w*dx,
1584 y2 = -w*dy; // y axis points to the bottom, hence minus
1585 double x4 = h*dy,
1586 y4 = h*dx;
1587 double x3 = x4 + x2,
1588 y3 = y4 + y2;
1589
1590 // calc max and min
1591 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1592 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1593 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1594 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1595
1596
1597 wxImage image = src.ConvertToImage();
1598
1599 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1600 m_textForegroundColour.Green(),
1601 m_textForegroundColour.Blue() );
1602 image = image.Rotate( rad, wxPoint(0,0) );
1603
1604 int i_angle = (int) angle;
1605 i_angle = i_angle % 360;
1606 if (i_angle < 0)
1607 i_angle += 360;
1608 int xoffset = 0;
1609 if ((i_angle >= 90.0) && (i_angle < 270.0))
1610 xoffset = image.GetWidth();
1611 int yoffset = 0;
1612 if ((i_angle >= 0.0) && (i_angle < 180.0))
1613 yoffset = image.GetHeight();
1614
1615 if ((i_angle >= 0) && (i_angle < 90))
1616 yoffset -= (int)( cos(rad)*h );
1617 if ((i_angle >= 90) && (i_angle < 180))
1618 xoffset -= (int)( sin(rad)*h );
1619 if ((i_angle >= 180) && (i_angle < 270))
1620 yoffset -= (int)( cos(rad)*h );
1621 if ((i_angle >= 270) && (i_angle < 360))
1622 xoffset -= (int)( sin(rad)*h );
1623
1624 int i_x = x - xoffset;
1625 int i_y = y - yoffset;
1626
1627 src = image;
1628 DoDrawBitmap( src, i_x, i_y, true );
1629
1630
1631 // it would be better to draw with non underlined font and draw the line
1632 // manually here (it would be more straight...)
1633 #if 0
1634 if ( m_font.GetUnderlined() )
1635 {
1636 gdk_draw_line( m_window, m_textGC,
1637 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1638 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1639 }
1640 #endif // 0
1641
1642 // update the bounding box
1643 CalcBoundingBox(x + minX, y + minY);
1644 CalcBoundingBox(x + maxX, y + maxY);
1645 }
1646
1647 void wxWindowDC::DoGetTextExtent(const wxString &string,
1648 wxCoord *width, wxCoord *height,
1649 wxCoord *descent, wxCoord *externalLeading,
1650 wxFont *theFont) const
1651 {
1652 if ( width )
1653 *width = 0;
1654 if ( height )
1655 *height = 0;
1656 if ( descent )
1657 *descent = 0;
1658 if ( externalLeading )
1659 *externalLeading = 0;
1660
1661 if (string.empty())
1662 return;
1663
1664 // ensure that theFont is always non-NULL
1665 if ( !theFont || !theFont->Ok() )
1666 theFont = wx_const_cast(wxFont *, &m_font);
1667
1668 // and use it if it's valid
1669 if ( theFont->Ok() )
1670 {
1671 pango_layout_set_font_description
1672 (
1673 m_layout,
1674 theFont->GetNativeFontInfo()->description
1675 );
1676 }
1677
1678 // Set layout's text
1679 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1680 if ( !dataUTF8 )
1681 {
1682 // hardly ideal, but what else can we do if conversion failed?
1683 return;
1684 }
1685
1686 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1687
1688 if (descent)
1689 {
1690 int h;
1691 pango_layout_get_pixel_size( m_layout, width, &h );
1692 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1693 int baseline = pango_layout_iter_get_baseline(iter);
1694 pango_layout_iter_free(iter);
1695 *descent = h - PANGO_PIXELS(baseline);
1696
1697 if (height)
1698 *height = (wxCoord) h;
1699 }
1700 else
1701 {
1702 pango_layout_get_pixel_size( m_layout, width, height );
1703 }
1704
1705 // Reset old font description
1706 if (theFont)
1707 pango_layout_set_font_description( m_layout, m_fontdesc );
1708 }
1709
1710 wxCoord wxWindowDC::GetCharWidth() const
1711 {
1712 pango_layout_set_text( m_layout, "H", 1 );
1713 int w;
1714 pango_layout_get_pixel_size( m_layout, &w, NULL );
1715 return w;
1716 }
1717
1718 wxCoord wxWindowDC::GetCharHeight() const
1719 {
1720 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1721 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1722 }
1723
1724 void wxWindowDC::Clear()
1725 {
1726 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1727
1728 if (!m_window) return;
1729
1730 // VZ: the code below results in infinite recursion and crashes when
1731 // dc.Clear() is done from OnPaint() so I disable it for now.
1732 // I don't know what the correct fix is but Clear() surely should not
1733 // reenter OnPaint()!
1734 #if 0
1735 /* - we either are a memory dc or have a window as the
1736 owner. anything else shouldn't happen.
1737 - we don't use gdk_window_clear() as we don't set
1738 the window's background colour anymore. it is too
1739 much pain to keep the DC's and the window's back-
1740 ground colour in synch. */
1741
1742 if (m_owner)
1743 {
1744 m_owner->Clear();
1745 return;
1746 }
1747
1748 if (m_isMemDC)
1749 {
1750 int width,height;
1751 GetSize( &width, &height );
1752 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1753 return;
1754 }
1755 #else // 1
1756 int width,height;
1757 GetSize( &width, &height );
1758 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1759 #endif // 0/1
1760 }
1761
1762 void wxWindowDC::SetFont( const wxFont &font )
1763 {
1764 m_font = font;
1765
1766 if (m_font.Ok())
1767 {
1768 if (m_fontdesc)
1769 pango_font_description_free( m_fontdesc );
1770
1771 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1772
1773
1774 if (m_owner)
1775 {
1776 PangoContext *oldContext = m_context;
1777
1778 m_context = m_owner->GtkGetPangoDefaultContext();
1779
1780 // If we switch back/forth between different contexts
1781 // we also have to create a new layout. I think so,
1782 // at least, and it doesn't hurt to do it.
1783 if (oldContext != m_context)
1784 {
1785 if (m_layout)
1786 g_object_unref (m_layout);
1787
1788 m_layout = pango_layout_new( m_context );
1789 }
1790 }
1791
1792 pango_layout_set_font_description( m_layout, m_fontdesc );
1793 }
1794 }
1795
1796 void wxWindowDC::SetPen( const wxPen &pen )
1797 {
1798 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1799
1800 if (m_pen == pen) return;
1801
1802 m_pen = pen;
1803
1804 if (!m_pen.Ok()) return;
1805
1806 if (!m_window) return;
1807
1808 gint width = m_pen.GetWidth();
1809 if (width <= 0)
1810 {
1811 // CMB: if width is non-zero scale it with the dc
1812 width = 1;
1813 }
1814 else
1815 {
1816 // X doesn't allow different width in x and y and so we take
1817 // the average
1818 double w = 0.5 +
1819 ( fabs((double) XLOG2DEVREL(width)) +
1820 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1821 width = (int)w;
1822 if ( !width )
1823 {
1824 // width can't be 0 or an internal GTK error occurs inside
1825 // gdk_gc_set_dashes() below
1826 width = 1;
1827 }
1828 }
1829
1830 static const wxGTKDash dotted[] = {1, 1};
1831 static const wxGTKDash short_dashed[] = {2, 2};
1832 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1833 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1834
1835 // We express dash pattern in pen width unit, so we are
1836 // independent of zoom factor and so on...
1837 int req_nb_dash;
1838 const wxGTKDash *req_dash;
1839
1840 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1841 switch (m_pen.GetStyle())
1842 {
1843 case wxUSER_DASH:
1844 {
1845 lineStyle = GDK_LINE_ON_OFF_DASH;
1846 req_nb_dash = m_pen.GetDashCount();
1847 req_dash = (wxGTKDash*)m_pen.GetDash();
1848 break;
1849 }
1850 case wxDOT:
1851 {
1852 lineStyle = GDK_LINE_ON_OFF_DASH;
1853 req_nb_dash = 2;
1854 req_dash = dotted;
1855 break;
1856 }
1857 case wxLONG_DASH:
1858 {
1859 lineStyle = GDK_LINE_ON_OFF_DASH;
1860 req_nb_dash = 2;
1861 req_dash = wxCoord_dashed;
1862 break;
1863 }
1864 case wxSHORT_DASH:
1865 {
1866 lineStyle = GDK_LINE_ON_OFF_DASH;
1867 req_nb_dash = 2;
1868 req_dash = short_dashed;
1869 break;
1870 }
1871 case wxDOT_DASH:
1872 {
1873 // lineStyle = GDK_LINE_DOUBLE_DASH;
1874 lineStyle = GDK_LINE_ON_OFF_DASH;
1875 req_nb_dash = 4;
1876 req_dash = dotted_dashed;
1877 break;
1878 }
1879
1880 case wxTRANSPARENT:
1881 case wxSTIPPLE_MASK_OPAQUE:
1882 case wxSTIPPLE:
1883 case wxSOLID:
1884 default:
1885 {
1886 lineStyle = GDK_LINE_SOLID;
1887 req_dash = (wxGTKDash*)NULL;
1888 req_nb_dash = 0;
1889 break;
1890 }
1891 }
1892
1893 if (req_dash && req_nb_dash)
1894 {
1895 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1896 if (real_req_dash)
1897 {
1898 for (int i = 0; i < req_nb_dash; i++)
1899 real_req_dash[i] = req_dash[i] * width;
1900 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1901 delete[] real_req_dash;
1902 }
1903 else
1904 {
1905 // No Memory. We use non-scaled dash pattern...
1906 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1907 }
1908 }
1909
1910 GdkCapStyle capStyle = GDK_CAP_ROUND;
1911 switch (m_pen.GetCap())
1912 {
1913 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1914 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1915 case wxCAP_ROUND:
1916 default:
1917 {
1918 if (width <= 1)
1919 {
1920 width = 0;
1921 capStyle = GDK_CAP_NOT_LAST;
1922 }
1923 else
1924 {
1925 capStyle = GDK_CAP_ROUND;
1926 }
1927 break;
1928 }
1929 }
1930
1931 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1932 switch (m_pen.GetJoin())
1933 {
1934 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1935 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1936 case wxJOIN_ROUND:
1937 default: { joinStyle = GDK_JOIN_ROUND; break; }
1938 }
1939
1940 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1941
1942 m_pen.GetColour().CalcPixel( m_cmap );
1943 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1944 }
1945
1946 void wxWindowDC::SetBrush( const wxBrush &brush )
1947 {
1948 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1949
1950 if (m_brush == brush) return;
1951
1952 m_brush = brush;
1953
1954 if (!m_brush.Ok()) return;
1955
1956 if (!m_window) return;
1957
1958 m_brush.GetColour().CalcPixel( m_cmap );
1959 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1960
1961 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
1962
1963 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
1964 {
1965 if (m_brush.GetStipple()->GetDepth() != 1)
1966 {
1967 gdk_gc_set_fill( m_brushGC, GDK_TILED );
1968 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1969 }
1970 else
1971 {
1972 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1973 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1974 }
1975 }
1976
1977 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1978 {
1979 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
1980 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
1981 }
1982
1983 if (m_brush.IsHatch())
1984 {
1985 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1986 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
1987 gdk_gc_set_stipple( m_brushGC, hatches[num] );
1988 }
1989 }
1990
1991 void wxWindowDC::SetBackground( const wxBrush &brush )
1992 {
1993 /* CMB 21/7/98: Added SetBackground. Sets background brush
1994 * for Clear() and bg colour for shapes filled with cross-hatch brush */
1995
1996 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1997
1998 if (m_backgroundBrush == brush) return;
1999
2000 m_backgroundBrush = brush;
2001
2002 if (!m_backgroundBrush.Ok()) return;
2003
2004 if (!m_window) return;
2005
2006 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2007 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2008 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2009 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2010 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2011
2012 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2013
2014 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2015 {
2016 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2017 {
2018 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2019 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2020 }
2021 else
2022 {
2023 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2024 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2025 }
2026 }
2027
2028 if (m_backgroundBrush.IsHatch())
2029 {
2030 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2031 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2032 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2033 }
2034 }
2035
2036 void wxWindowDC::SetLogicalFunction( int function )
2037 {
2038 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2039
2040 if (m_logicalFunction == function)
2041 return;
2042
2043 // VZ: shouldn't this be a CHECK?
2044 if (!m_window)
2045 return;
2046
2047 GdkFunction mode;
2048 switch (function)
2049 {
2050 case wxXOR: mode = GDK_XOR; break;
2051 case wxINVERT: mode = GDK_INVERT; break;
2052 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2053 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2054 case wxCLEAR: mode = GDK_CLEAR; break;
2055 case wxSET: mode = GDK_SET; break;
2056 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2057 case wxAND: mode = GDK_AND; break;
2058 case wxOR: mode = GDK_OR; break;
2059 case wxEQUIV: mode = GDK_EQUIV; break;
2060 case wxNAND: mode = GDK_NAND; break;
2061 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2062 case wxCOPY: mode = GDK_COPY; break;
2063 case wxNO_OP: mode = GDK_NOOP; break;
2064 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2065
2066 // unsupported by GTK
2067 case wxNOR: mode = GDK_COPY; break;
2068 default:
2069 wxFAIL_MSG( wxT("unsupported logical function") );
2070 mode = GDK_COPY;
2071 }
2072
2073 m_logicalFunction = function;
2074
2075 gdk_gc_set_function( m_penGC, mode );
2076 gdk_gc_set_function( m_brushGC, mode );
2077
2078 // to stay compatible with wxMSW, we don't apply ROPs to the text
2079 // operations (i.e. DrawText/DrawRotatedText).
2080 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2081 gdk_gc_set_function( m_textGC, mode );
2082 }
2083
2084 void wxWindowDC::SetTextForeground( const wxColour &col )
2085 {
2086 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2087
2088 // don't set m_textForegroundColour to an invalid colour as we'd crash
2089 // later then (we use m_textForegroundColour.GetColor() without checking
2090 // in a few places)
2091 if ( !col.Ok() || (m_textForegroundColour == col) )
2092 return;
2093
2094 m_textForegroundColour = col;
2095
2096 if ( m_window )
2097 {
2098 m_textForegroundColour.CalcPixel( m_cmap );
2099 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2100 }
2101 }
2102
2103 void wxWindowDC::SetTextBackground( const wxColour &col )
2104 {
2105 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2106
2107 // same as above
2108 if ( !col.Ok() || (m_textBackgroundColour == col) )
2109 return;
2110
2111 m_textBackgroundColour = col;
2112
2113 if ( m_window )
2114 {
2115 m_textBackgroundColour.CalcPixel( m_cmap );
2116 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2117 }
2118 }
2119
2120 void wxWindowDC::SetBackgroundMode( int mode )
2121 {
2122 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2123
2124 m_backgroundMode = mode;
2125
2126 if (!m_window) return;
2127
2128 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2129 // transparent/solid background mode
2130
2131 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2132 {
2133 gdk_gc_set_fill( m_brushGC,
2134 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2135 }
2136 }
2137
2138 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2139 {
2140 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2141 }
2142
2143 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2144 {
2145 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2146
2147 if (!m_window) return;
2148
2149 wxRect rect;
2150 rect.x = XLOG2DEV(x);
2151 rect.y = YLOG2DEV(y);
2152 rect.width = XLOG2DEVREL(width);
2153 rect.height = YLOG2DEVREL(height);
2154
2155 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2156 {
2157 rect.x -= rect.width;
2158 }
2159
2160 if (!m_currentClippingRegion.IsNull())
2161 m_currentClippingRegion.Intersect( rect );
2162 else
2163 m_currentClippingRegion.Union( rect );
2164
2165 #if USE_PAINT_REGION
2166 if (!m_paintClippingRegion.IsNull())
2167 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2168 #endif
2169
2170 wxCoord xx, yy, ww, hh;
2171 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2172 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2173
2174 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2175 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2176 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2177 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2178 }
2179
2180 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2181 {
2182 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2183
2184 if (region.Empty())
2185 {
2186 DestroyClippingRegion();
2187 return;
2188 }
2189
2190 if (!m_window) return;
2191
2192 if (!m_currentClippingRegion.IsNull())
2193 m_currentClippingRegion.Intersect( region );
2194 else
2195 m_currentClippingRegion.Union( region );
2196
2197 #if USE_PAINT_REGION
2198 if (!m_paintClippingRegion.IsNull())
2199 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2200 #endif
2201
2202 wxCoord xx, yy, ww, hh;
2203 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2204 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
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 void wxWindowDC::DestroyClippingRegion()
2213 {
2214 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2215
2216 wxDC::DestroyClippingRegion();
2217
2218 m_currentClippingRegion.Clear();
2219
2220 #if USE_PAINT_REGION
2221 if (!m_paintClippingRegion.IsEmpty())
2222 m_currentClippingRegion.Union( m_paintClippingRegion );
2223 #endif
2224
2225 if (!m_window) return;
2226
2227 if (m_currentClippingRegion.IsEmpty())
2228 {
2229 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2230 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2231 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2232 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2233 }
2234 else
2235 {
2236 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2237 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2238 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2239 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2240 }
2241 }
2242
2243 void wxWindowDC::Destroy()
2244 {
2245 if (m_penGC) wxFreePoolGC( m_penGC );
2246 m_penGC = (GdkGC*) NULL;
2247 if (m_brushGC) wxFreePoolGC( m_brushGC );
2248 m_brushGC = (GdkGC*) NULL;
2249 if (m_textGC) wxFreePoolGC( m_textGC );
2250 m_textGC = (GdkGC*) NULL;
2251 if (m_bgGC) wxFreePoolGC( m_bgGC );
2252 m_bgGC = (GdkGC*) NULL;
2253 }
2254
2255 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2256 {
2257 m_deviceOriginX = x;
2258 m_deviceOriginY = y;
2259
2260 ComputeScaleAndOrigin();
2261 }
2262
2263 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2264 {
2265 m_signX = (xLeftRight ? 1 : -1);
2266 m_signY = (yBottomUp ? -1 : 1);
2267
2268 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2269 m_signX = -m_signX;
2270
2271 ComputeScaleAndOrigin();
2272 }
2273
2274 void wxWindowDC::ComputeScaleAndOrigin()
2275 {
2276 const wxRealPoint origScale(m_scaleX, m_scaleY);
2277
2278 wxDC::ComputeScaleAndOrigin();
2279
2280 // if scale has changed call SetPen to recalulate the line width
2281 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2282 {
2283 // this is a bit artificial, but we need to force wxDC to think the pen
2284 // has changed
2285 wxPen pen = m_pen;
2286 m_pen = wxNullPen;
2287 SetPen( pen );
2288 }
2289 }
2290
2291 // Resolution in pixels per logical inch
2292 wxSize wxWindowDC::GetPPI() const
2293 {
2294 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2295 }
2296
2297 int wxWindowDC::GetDepth() const
2298 {
2299 return gdk_drawable_get_depth(m_window);
2300 }
2301
2302
2303 //-----------------------------------------------------------------------------
2304 // wxPaintDC
2305 //-----------------------------------------------------------------------------
2306
2307 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2308
2309 // Limit the paint region to the window size. Sometimes
2310 // the paint region is too big, and this risks X11 errors
2311 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2312 {
2313 wxRect originalRect = region.GetBox();
2314 wxRect rect(originalRect);
2315 if (rect.width + rect.x > sz.x)
2316 rect.width = sz.x - rect.x;
2317 if (rect.height + rect.y > sz.y)
2318 rect.height = sz.y - rect.y;
2319 if (rect != originalRect)
2320 {
2321 region = wxRegion(rect);
2322 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2323 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2324 rect.x, rect.y, rect.width, rect.height);
2325 }
2326 }
2327
2328 wxPaintDC::wxPaintDC( wxWindow *win )
2329 : wxClientDC( win )
2330 {
2331 #if USE_PAINT_REGION
2332 if (!win->m_clipPaintRegion)
2333 return;
2334
2335 wxSize sz = win->GetSize();
2336 m_paintClippingRegion = win->GetUpdateRegion();
2337 wxLimitRegionToSize(m_paintClippingRegion, sz);
2338
2339 GdkRegion *region = m_paintClippingRegion.GetRegion();
2340 if ( region )
2341 {
2342 m_currentClippingRegion.Union( m_paintClippingRegion );
2343 wxLimitRegionToSize(m_currentClippingRegion, sz);
2344
2345 if (sz.x <= 0 || sz.y <= 0)
2346 return ;
2347
2348 gdk_gc_set_clip_region( m_penGC, region );
2349 gdk_gc_set_clip_region( m_brushGC, region );
2350 gdk_gc_set_clip_region( m_textGC, region );
2351 gdk_gc_set_clip_region( m_bgGC, region );
2352 }
2353 #endif // USE_PAINT_REGION
2354 }
2355
2356 //-----------------------------------------------------------------------------
2357 // wxClientDC
2358 //-----------------------------------------------------------------------------
2359
2360 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2361
2362 wxClientDC::wxClientDC( wxWindow *win )
2363 : wxWindowDC( win )
2364 {
2365 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2366
2367 #ifdef __WXUNIVERSAL__
2368 wxPoint ptOrigin = win->GetClientAreaOrigin();
2369 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2370 wxSize size = win->GetClientSize();
2371 SetClippingRegion(wxPoint(0, 0), size);
2372 #endif // __WXUNIVERSAL__
2373 }
2374
2375 void wxClientDC::DoGetSize(int *width, int *height) const
2376 {
2377 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2378
2379 m_owner->GetClientSize( width, height );
2380 }
2381
2382 // ----------------------------------------------------------------------------
2383 // wxDCModule
2384 // ----------------------------------------------------------------------------
2385
2386 class wxDCModule : public wxModule
2387 {
2388 public:
2389 bool OnInit();
2390 void OnExit();
2391
2392 private:
2393 DECLARE_DYNAMIC_CLASS(wxDCModule)
2394 };
2395
2396 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2397
2398 bool wxDCModule::OnInit()
2399 {
2400 wxInitGCPool();
2401 return true;
2402 }
2403
2404 void wxDCModule::OnExit()
2405 {
2406 wxCleanUpGCPool();
2407 }
wxWidgets (Impactor)