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free old resources in DoLoad(), apparently fixes memory leaks with gstreamer 0.10...
[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 gdk_gc_set_colormap( m_textGC, m_cmap );
396
397 /* m_penGC */
398 m_pen.GetColour().CalcPixel( m_cmap );
399 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
400 gdk_gc_set_background( m_penGC, bg_col );
401
402 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
403
404 /* m_brushGC */
405 m_brush.GetColour().CalcPixel( m_cmap );
406 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
407 gdk_gc_set_background( m_brushGC, bg_col );
408
409 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
410
411 /* m_bgGC */
412 gdk_gc_set_background( m_bgGC, bg_col );
413 gdk_gc_set_foreground( m_bgGC, bg_col );
414
415 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
416
417 /* ROPs */
418 gdk_gc_set_function( m_textGC, GDK_COPY );
419 gdk_gc_set_function( m_brushGC, GDK_COPY );
420 gdk_gc_set_function( m_penGC, GDK_COPY );
421
422 /* clipping */
423 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
424 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
425 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
426 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
427
428 if (!hatch_bitmap)
429 {
430 hatch_bitmap = hatches;
431 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
432 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
433 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
434 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
435 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
436 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
437 }
438 }
439
440 void wxWindowDC::DoGetSize( int* width, int* height ) const
441 {
442 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
443
444 m_owner->GetSize(width, height);
445 }
446
447 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
448 const wxColour & col, int style);
449
450 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
451 const wxColour& col, int style)
452 {
453 return wxDoFloodFill(this, x, y, col, style);
454 }
455
456 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
457 {
458 // Generic (and therefore rather inefficient) method.
459 // Could be improved.
460 wxMemoryDC memdc;
461 wxBitmap bitmap(1, 1);
462 memdc.SelectObject(bitmap);
463 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
464 memdc.SelectObject(wxNullBitmap);
465
466 wxImage image = bitmap.ConvertToImage();
467 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
468 return true;
469 }
470
471 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
472 {
473 wxCHECK_RET( Ok(), wxT("invalid window dc") );
474
475 if (m_pen.GetStyle() != wxTRANSPARENT)
476 {
477 if (m_window)
478 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
479
480 CalcBoundingBox(x1, y1);
481 CalcBoundingBox(x2, y2);
482 }
483 }
484
485 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
486 {
487 wxCHECK_RET( Ok(), wxT("invalid window dc") );
488
489 if (m_pen.GetStyle() != wxTRANSPARENT)
490 {
491 int w = 0;
492 int h = 0;
493 GetSize( &w, &h );
494 wxCoord xx = XLOG2DEV(x);
495 wxCoord yy = YLOG2DEV(y);
496 if (m_window)
497 {
498 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
499 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
500 }
501 }
502 }
503
504 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
505 wxCoord xc, wxCoord yc )
506 {
507 wxCHECK_RET( Ok(), wxT("invalid window dc") );
508
509 wxCoord xx1 = XLOG2DEV(x1);
510 wxCoord yy1 = YLOG2DEV(y1);
511 wxCoord xx2 = XLOG2DEV(x2);
512 wxCoord yy2 = YLOG2DEV(y2);
513 wxCoord xxc = XLOG2DEV(xc);
514 wxCoord yyc = YLOG2DEV(yc);
515 double dx = xx1 - xxc;
516 double dy = yy1 - yyc;
517 double radius = sqrt((double)(dx*dx+dy*dy));
518 wxCoord r = (wxCoord)radius;
519 double radius1, radius2;
520
521 if (xx1 == xx2 && yy1 == yy2)
522 {
523 radius1 = 0.0;
524 radius2 = 360.0;
525 }
526 else if ( wxIsNullDouble(radius) )
527 {
528 radius1 =
529 radius2 = 0.0;
530 }
531 else
532 {
533 radius1 = (xx1 - xxc == 0) ?
534 (yy1 - yyc < 0) ? 90.0 : -90.0 :
535 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
536 radius2 = (xx2 - xxc == 0) ?
537 (yy2 - yyc < 0) ? 90.0 : -90.0 :
538 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
539 }
540 wxCoord alpha1 = wxCoord(radius1 * 64.0);
541 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
542 while (alpha2 <= 0) alpha2 += 360*64;
543 while (alpha1 > 360*64) alpha1 -= 360*64;
544
545 if (m_window)
546 {
547 if (m_brush.GetStyle() != wxTRANSPARENT)
548 {
549 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
550 {
551 gdk_gc_set_ts_origin( m_textGC,
552 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
553 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
554 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
555 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
556 } else
557 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
558 {
559 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
560 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
561 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
562 } else
563 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
564 {
565 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
566 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
567 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
568 } else
569 if (m_brush.GetStyle() == wxSTIPPLE)
570 {
571 gdk_gc_set_ts_origin( m_brushGC,
572 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
573 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
574 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
575 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
576 }
577 else
578 {
579 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
580 }
581 }
582
583 if (m_pen.GetStyle() != wxTRANSPARENT)
584 {
585 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
586
587 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
588 {
589 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
590 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
591 }
592 }
593 }
594
595 CalcBoundingBox (x1, y1);
596 CalcBoundingBox (x2, y2);
597 }
598
599 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
600 {
601 wxCHECK_RET( Ok(), wxT("invalid window dc") );
602
603 wxCoord xx = XLOG2DEV(x);
604 wxCoord yy = YLOG2DEV(y);
605 wxCoord ww = m_signX * XLOG2DEVREL(width);
606 wxCoord hh = m_signY * YLOG2DEVREL(height);
607
608 // CMB: handle -ve width and/or height
609 if (ww < 0) { ww = -ww; xx = xx - ww; }
610 if (hh < 0) { hh = -hh; yy = yy - hh; }
611
612 if (m_window)
613 {
614 wxCoord start = wxCoord(sa * 64.0);
615 wxCoord end = wxCoord((ea-sa) * 64.0);
616
617 if (m_brush.GetStyle() != wxTRANSPARENT)
618 {
619 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
620 {
621 gdk_gc_set_ts_origin( m_textGC,
622 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
623 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
624 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
625 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
626 } else
627 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
628 {
629 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
630 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
631 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
632 } else
633 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
634 {
635 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
636 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
637 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
638 } else
639 if (m_brush.GetStyle() == wxSTIPPLE)
640 {
641 gdk_gc_set_ts_origin( m_brushGC,
642 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
643 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
644 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
645 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
646 }
647 else
648 {
649 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
650 }
651 }
652
653 if (m_pen.GetStyle() != wxTRANSPARENT)
654 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
655 }
656
657 CalcBoundingBox (x, y);
658 CalcBoundingBox (x + width, y + height);
659 }
660
661 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
662 {
663 wxCHECK_RET( Ok(), wxT("invalid window dc") );
664
665 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
666 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
667
668 CalcBoundingBox (x, y);
669 }
670
671 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
672 {
673 wxCHECK_RET( Ok(), wxT("invalid window dc") );
674
675 if (m_pen.GetStyle() == wxTRANSPARENT) return;
676 if (n <= 0) return;
677
678 //Check, if scaling is necessary
679 const bool doScale =
680 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
681
682 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
683 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
684
685 if (doScale)
686 gpts = new GdkPoint[n];
687
688 for (int i = 0; i < n; i++)
689 {
690 if (doScale)
691 {
692 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
693 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
694 }
695 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
696 }
697
698 if (m_window)
699 gdk_draw_lines( m_window, m_penGC, gpts, n);
700
701 if (doScale)
702 delete[] gpts;
703 }
704
705 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
706 {
707 wxCHECK_RET( Ok(), wxT("invalid window dc") );
708
709 if (n <= 0) return;
710
711 //Check, if scaling is necessary
712 const bool doScale =
713 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
714
715 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
716 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
717
718 if (doScale)
719 gdkpoints = new GdkPoint[n];
720
721 int i;
722 for (i = 0 ; i < n ; i++)
723 {
724 if (doScale)
725 {
726 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
727 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
728 }
729 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
730 }
731
732 if (m_window)
733 {
734 if (m_brush.GetStyle() != wxTRANSPARENT)
735 {
736 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
737 {
738 gdk_gc_set_ts_origin( m_textGC,
739 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
740 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
741 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
742 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
743 } else
744 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
745 {
746 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
747 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
748 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
749 } else
750 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
751 {
752 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
753 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
754 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
755 } else
756 if (m_brush.GetStyle() == wxSTIPPLE)
757 {
758 gdk_gc_set_ts_origin( m_brushGC,
759 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
760 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
761 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
762 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
763 }
764 else
765 {
766 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
767 }
768 }
769
770 if (m_pen.GetStyle() != wxTRANSPARENT)
771 {
772 /*
773 for (i = 0 ; i < n ; i++)
774 {
775 gdk_draw_line( m_window, m_penGC,
776 gdkpoints[i%n].x,
777 gdkpoints[i%n].y,
778 gdkpoints[(i+1)%n].x,
779 gdkpoints[(i+1)%n].y);
780 }
781 */
782 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
783
784 }
785 }
786
787 if (doScale)
788 delete[] gdkpoints;
789 }
790
791 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
792 {
793 wxCHECK_RET( Ok(), wxT("invalid window dc") );
794
795 wxCoord xx = XLOG2DEV(x);
796 wxCoord yy = YLOG2DEV(y);
797 wxCoord ww = m_signX * XLOG2DEVREL(width);
798 wxCoord hh = m_signY * YLOG2DEVREL(height);
799
800 // CMB: draw nothing if transformed w or h is 0
801 if (ww == 0 || hh == 0) return;
802
803 // CMB: handle -ve width and/or height
804 if (ww < 0) { ww = -ww; xx = xx - ww; }
805 if (hh < 0) { hh = -hh; yy = yy - hh; }
806
807 if (m_window)
808 {
809 if (m_brush.GetStyle() != wxTRANSPARENT)
810 {
811 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
812 {
813 gdk_gc_set_ts_origin( m_textGC,
814 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
815 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
816 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
817 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
818 } else
819 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
820 {
821 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
822 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
823 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
824 } else
825 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
826 {
827 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
828 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
829 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
830 } else
831 if (m_brush.GetStyle() == wxSTIPPLE)
832 {
833 gdk_gc_set_ts_origin( m_brushGC,
834 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
835 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
836 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
837 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
838 }
839 else
840 {
841 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
842 }
843 }
844
845 if (m_pen.GetStyle() != wxTRANSPARENT)
846 {
847 #if 1
848 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
849 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
850 {
851 // Use 2 1-line rects instead
852 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
853
854 if (m_signX == -1)
855 {
856 // Different for RTL
857 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
858 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
859 }
860 else
861 {
862 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
863 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
864 }
865
866 // reset
867 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
868 }
869 else
870 #endif
871 {
872 // Just use X11 for other cases
873 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
874 }
875 }
876 }
877
878 CalcBoundingBox( x, y );
879 CalcBoundingBox( x + width, y + height );
880 }
881
882 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
883 {
884 wxCHECK_RET( Ok(), wxT("invalid window dc") );
885
886 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
887
888 wxCoord xx = XLOG2DEV(x);
889 wxCoord yy = YLOG2DEV(y);
890 wxCoord ww = m_signX * XLOG2DEVREL(width);
891 wxCoord hh = m_signY * YLOG2DEVREL(height);
892 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
893
894 // CMB: handle -ve width and/or height
895 if (ww < 0) { ww = -ww; xx = xx - ww; }
896 if (hh < 0) { hh = -hh; yy = yy - hh; }
897
898 // CMB: if radius is zero use DrawRectangle() instead to avoid
899 // X drawing errors with small radii
900 if (rr == 0)
901 {
902 DrawRectangle( x, y, width, height );
903 return;
904 }
905
906 // CMB: draw nothing if transformed w or h is 0
907 if (ww == 0 || hh == 0) return;
908
909 // CMB: adjust size if outline is drawn otherwise the result is
910 // 1 pixel too wide and high
911 if (m_pen.GetStyle() != wxTRANSPARENT)
912 {
913 ww--;
914 hh--;
915 }
916
917 if (m_window)
918 {
919 // CMB: ensure dd is not larger than rectangle otherwise we
920 // get an hour glass shape
921 wxCoord dd = 2 * rr;
922 if (dd > ww) dd = ww;
923 if (dd > hh) dd = hh;
924 rr = dd / 2;
925
926 if (m_brush.GetStyle() != wxTRANSPARENT)
927 {
928 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
929 {
930 gdk_gc_set_ts_origin( m_textGC,
931 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
932 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
933 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
934 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
935 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
936 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
937 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
938 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
939 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
940 } else
941 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
942 {
943 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
944 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
945 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
948 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
949 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
950 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
951 } else
952 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
953 {
954 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
955 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
956 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
959 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
960 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
961 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
962 } else
963 if (m_brush.GetStyle() == wxSTIPPLE)
964 {
965 gdk_gc_set_ts_origin( m_brushGC,
966 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
967 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
968 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
969 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
970 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
972 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
973 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
974 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
975 }
976 else
977 {
978 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
979 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
980 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
981 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
982 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
983 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
984 }
985 }
986
987 if (m_pen.GetStyle() != wxTRANSPARENT)
988 {
989 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
990 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
991 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
992 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
993 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
994 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
995 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
996 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
997 }
998 }
999
1000 // this ignores the radius
1001 CalcBoundingBox( x, y );
1002 CalcBoundingBox( x + width, y + height );
1003 }
1004
1005 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1006 {
1007 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1008
1009 wxCoord xx = XLOG2DEV(x);
1010 wxCoord yy = YLOG2DEV(y);
1011 wxCoord ww = m_signX * XLOG2DEVREL(width);
1012 wxCoord hh = m_signY * YLOG2DEVREL(height);
1013
1014 // CMB: handle -ve width and/or height
1015 if (ww < 0) { ww = -ww; xx = xx - ww; }
1016 if (hh < 0) { hh = -hh; yy = yy - hh; }
1017
1018 if (m_window)
1019 {
1020 if (m_brush.GetStyle() != wxTRANSPARENT)
1021 {
1022 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1023 {
1024 gdk_gc_set_ts_origin( m_textGC,
1025 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1026 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1027 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1028 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1029 } else
1030 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1031 {
1032 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1033 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1034 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1035 } else
1036 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1037 {
1038 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1039 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1040 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1041 } else
1042 if (m_brush.GetStyle() == wxSTIPPLE)
1043 {
1044 gdk_gc_set_ts_origin( m_brushGC,
1045 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1046 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1047 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1048 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1049 }
1050 else
1051 {
1052 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1053 }
1054 }
1055
1056 if (m_pen.GetStyle() != wxTRANSPARENT)
1057 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1058 }
1059
1060 CalcBoundingBox( x, y );
1061 CalcBoundingBox( x + width, y + height );
1062 }
1063
1064 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1065 {
1066 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1067 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1068 }
1069
1070 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1071 wxCoord x, wxCoord y,
1072 bool useMask )
1073 {
1074 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1075
1076 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1077
1078 bool is_mono = bitmap.GetDepth() == 1;
1079
1080 // scale/translate size and position
1081 int xx = XLOG2DEV(x);
1082 int yy = YLOG2DEV(y);
1083
1084 int w = bitmap.GetWidth();
1085 int h = bitmap.GetHeight();
1086
1087 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1088 xx -= w;
1089
1090 CalcBoundingBox( x, y );
1091 CalcBoundingBox( x + w, y + h );
1092
1093 if (!m_window) return;
1094
1095 int ww = XLOG2DEVREL(w);
1096 int hh = YLOG2DEVREL(h);
1097
1098 // compare to current clipping region
1099 if (!m_currentClippingRegion.IsNull())
1100 {
1101 wxRegion tmp( xx,yy,ww,hh );
1102 tmp.Intersect( m_currentClippingRegion );
1103 if (tmp.IsEmpty())
1104 return;
1105 }
1106
1107 // scale bitmap if required
1108 wxBitmap use_bitmap = bitmap;
1109 if ((w != ww) || (h != hh))
1110 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1111
1112 #if !GTK_CHECK_VERSION(2,2,0)
1113 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1114 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1115 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1116 // and also creates the mask as a side-effect:
1117 use_bitmap.GetPixmap();
1118 #endif
1119
1120 // apply mask if any
1121 GdkBitmap *mask = (GdkBitmap *) NULL;
1122 if (useMask && use_bitmap.GetMask())
1123 mask = use_bitmap.GetMask()->GetBitmap();
1124
1125 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1126
1127 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1128
1129 if (mask != NULL)
1130 {
1131 if (!m_currentClippingRegion.IsNull())
1132 {
1133 GdkColor col;
1134 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1135 GdkGC *gc = gdk_gc_new( new_mask );
1136 col.pixel = 0;
1137 gdk_gc_set_foreground( gc, &col );
1138 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1139 col.pixel = 0;
1140 gdk_gc_set_background( gc, &col );
1141 col.pixel = 1;
1142 gdk_gc_set_foreground( gc, &col );
1143 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1144 gdk_gc_set_clip_origin( gc, -xx, -yy );
1145 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1146 gdk_gc_set_stipple( gc, mask );
1147 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1148 mask = new_mask;
1149 g_object_unref (gc);
1150 }
1151
1152 gdk_gc_set_clip_mask(use_gc, mask);
1153 gdk_gc_set_clip_origin(use_gc, xx, yy);
1154 }
1155
1156 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1157 // drawing a mono-bitmap (XBitmap) we use the current text GC
1158 if (is_mono)
1159 {
1160 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1161 GdkGC *gc = gdk_gc_new( bitmap2 );
1162 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1163 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1164 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1165
1166 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1167
1168 g_object_unref (bitmap2);
1169 g_object_unref (gc);
1170 }
1171 else
1172 {
1173 #if GTK_CHECK_VERSION(2,2,0)
1174 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1175 {
1176 gdk_draw_pixbuf(m_window, use_gc,
1177 use_bitmap.GetPixbuf(),
1178 0, 0, xx, yy, -1, -1,
1179 GDK_RGB_DITHER_NORMAL, xx, yy);
1180 }
1181 else
1182 #endif
1183 {
1184 gdk_draw_drawable(m_window, use_gc,
1185 use_bitmap.GetPixmap(),
1186 0, 0, xx, yy, -1, -1);
1187 }
1188 }
1189
1190 // remove mask again if any
1191 if (mask != NULL)
1192 {
1193 gdk_gc_set_clip_mask(use_gc, NULL);
1194 gdk_gc_set_clip_origin(use_gc, 0, 0);
1195 if (!m_currentClippingRegion.IsNull())
1196 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1197 if (new_mask != NULL)
1198 g_object_unref(new_mask);
1199 }
1200 }
1201
1202 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1203 wxCoord width, wxCoord height,
1204 wxDC *source,
1205 wxCoord xsrc, wxCoord ysrc,
1206 int logical_func,
1207 bool useMask,
1208 wxCoord xsrcMask, wxCoord ysrcMask )
1209 {
1210 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1211
1212 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1213
1214 if (!m_window) return false;
1215
1216 // transform the source DC coords to the device ones
1217 xsrc = source->LogicalToDeviceX(xsrc);
1218 ysrc = source->LogicalToDeviceY(ysrc);
1219
1220 wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
1221 wxBitmap selected = source->GetSelectedBitmap();
1222
1223 bool use_bitmap_method = false;
1224 bool is_mono = false;
1225
1226 if (xsrcMask == -1 && ysrcMask == -1)
1227 {
1228 xsrcMask = xsrc;
1229 ysrcMask = ysrc;
1230 }
1231
1232 if (memDC && !selected.Ok()) return false;
1233
1234 if (selected.Ok())
1235 {
1236 is_mono = (selected.GetDepth() == 1);
1237
1238 // we use the "XCopyArea" way to copy a memory dc into
1239 // a different window if the memory dc BOTH
1240 // a) doesn't have any mask or its mask isn't used
1241 // b) it is clipped
1242 // c) is not 1-bit
1243
1244 if (useMask && (selected.GetMask()))
1245 {
1246 // we HAVE TO use the direct way for memory dcs
1247 // that have mask since the XCopyArea doesn't know
1248 // about masks
1249 use_bitmap_method = true;
1250 }
1251 else if (is_mono)
1252 {
1253 // we HAVE TO use the direct way for memory dcs
1254 // that are bitmaps because XCopyArea doesn't cope
1255 // with different bit depths
1256 use_bitmap_method = true;
1257 }
1258 else if ((xsrc == 0) && (ysrc == 0) &&
1259 (width == selected.GetWidth()) &&
1260 (height == selected.GetHeight()))
1261 {
1262 // we SHOULD use the direct way if all of the bitmap
1263 // in the memory dc is copied in which case XCopyArea
1264 // wouldn't be able able to boost performace by reducing
1265 // the area to be scaled
1266 use_bitmap_method = true;
1267 }
1268 }
1269
1270 CalcBoundingBox( xdest, ydest );
1271 CalcBoundingBox( xdest + width, ydest + height );
1272
1273 // scale/translate size and position
1274 wxCoord xx = XLOG2DEV(xdest);
1275 wxCoord yy = YLOG2DEV(ydest);
1276
1277 wxCoord ww = XLOG2DEVREL(width);
1278 wxCoord hh = YLOG2DEVREL(height);
1279
1280 // compare to current clipping region
1281 if (!m_currentClippingRegion.IsNull())
1282 {
1283 wxRegion tmp( xx,yy,ww,hh );
1284 tmp.Intersect( m_currentClippingRegion );
1285 if (tmp.IsEmpty())
1286 return true;
1287 }
1288
1289 int old_logical_func = m_logicalFunction;
1290 SetLogicalFunction( logical_func );
1291
1292 if (use_bitmap_method)
1293 {
1294 // scale/translate bitmap size
1295 wxCoord bm_width = selected.GetWidth();
1296 wxCoord bm_height = selected.GetHeight();
1297
1298 // Get clip coords for the bitmap. If we don't
1299 // use wxBitmap::Rescale(), which can clip the
1300 // bitmap, these are the same as the original
1301 // coordinates
1302 wxCoord cx = xx;
1303 wxCoord cy = yy;
1304 wxCoord cw = ww;
1305 wxCoord ch = hh;
1306
1307 // interpret userscale of src too
1308 double xsc,ysc;
1309 memDC->GetUserScale(&xsc,&ysc);
1310 bm_width = (int) (bm_width / xsc);
1311 bm_height = (int) (bm_height / ysc);
1312
1313 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1314 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1315
1316 // Scale bitmap if required
1317 wxBitmap use_bitmap = selected;
1318 if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
1319 {
1320 // This indicates that the blitting code below will get
1321 // a clipped bitmap and therefore needs to move the origin
1322 // accordingly
1323 wxRegion tmp( xx,yy,ww,hh );
1324 if (!m_currentClippingRegion.IsNull())
1325 tmp.Intersect( m_currentClippingRegion );
1326 tmp.GetBox(cx,cy,cw,ch);
1327
1328 // Scale and clipped bitmap
1329 use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1330 }
1331
1332 // apply mask if any
1333 GdkBitmap *mask = (GdkBitmap *) NULL;
1334 if (useMask && use_bitmap.GetMask())
1335 mask = use_bitmap.GetMask()->GetBitmap();
1336
1337 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1338
1339 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1340
1341 if (mask != NULL)
1342 {
1343 if (!m_currentClippingRegion.IsNull())
1344 {
1345 GdkColor col;
1346 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1347 GdkGC *gc = gdk_gc_new( new_mask );
1348 col.pixel = 0;
1349 gdk_gc_set_foreground( gc, &col );
1350 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1351 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1352 col.pixel = 0;
1353 gdk_gc_set_background( gc, &col );
1354 col.pixel = 1;
1355 gdk_gc_set_foreground( gc, &col );
1356 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1357 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1358 gdk_gc_set_clip_origin( gc, -cx, -cy );
1359 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1360 gdk_gc_set_stipple( gc, mask );
1361 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1362 mask = new_mask;
1363 g_object_unref (gc);
1364 }
1365
1366 gdk_gc_set_clip_mask(use_gc, mask);
1367 if (new_mask != NULL)
1368 gdk_gc_set_clip_origin(use_gc, cx, cy);
1369 else
1370 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1371 }
1372
1373 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1374 // drawing a mono-bitmap (XBitmap) we use the current text GC
1375
1376 if (is_mono)
1377 {
1378 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1379 GdkGC *gc = gdk_gc_new( bitmap );
1380 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1381 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1382 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1383
1384 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1385
1386 g_object_unref (bitmap);
1387 g_object_unref (gc);
1388 }
1389 else
1390 {
1391 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1392 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1393 }
1394
1395 // remove mask again if any
1396 if (mask != NULL)
1397 {
1398 gdk_gc_set_clip_mask(use_gc, NULL);
1399 gdk_gc_set_clip_origin(use_gc, 0, 0);
1400 if (!m_currentClippingRegion.IsNull())
1401 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1402 }
1403
1404 if (new_mask)
1405 g_object_unref (new_mask);
1406 }
1407 else // use_bitmap_method
1408 {
1409 if (selected.Ok() && ((width != ww) || (height != hh)))
1410 {
1411 // get clip coords
1412 wxRegion tmp( xx,yy,ww,hh );
1413 tmp.Intersect( m_currentClippingRegion );
1414 wxCoord cx,cy,cw,ch;
1415 tmp.GetBox(cx,cy,cw,ch);
1416
1417 // rescale bitmap
1418 wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1419
1420 // draw scaled bitmap
1421 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1422 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1423 }
1424 else
1425 {
1426 // No scaling and not a memory dc with a mask either
1427
1428 GdkWindow* window = source->GetGDKWindow();
1429 if ( !window )
1430 return false;
1431
1432 // copy including child window contents
1433 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1434 gdk_draw_drawable( m_window, m_penGC,
1435 window,
1436 xsrc, ysrc, xx, yy,
1437 width, height );
1438 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1439 }
1440 }
1441
1442 SetLogicalFunction( old_logical_func );
1443
1444 return true;
1445 }
1446
1447 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1448 {
1449 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1450
1451 if (!m_window) return;
1452
1453 if (text.empty()) return;
1454
1455 x = XLOG2DEV(x);
1456 y = YLOG2DEV(y);
1457
1458 wxCHECK_RET( m_context, wxT("no Pango context") );
1459 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1460 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1461
1462 gdk_pango_context_set_colormap( m_context, m_cmap );
1463
1464 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1465
1466 const wxCharBuffer data = wxGTK_CONV( text );
1467 if ( !data )
1468 return;
1469 size_t datalen = strlen(data);
1470
1471 // TODO: as soon as Pango provides a function to check at runtime its
1472 // version, we can use it to disable the underline hack for
1473 // Pango >= 1.16 as the "underline of leading/trailing spaces"
1474 // has been fixed there
1475 bool needshack = underlined;
1476 char *hackstring = NULL;
1477
1478 if (needshack)
1479 {
1480 // a PangoLayout which has leading/trailing spaces with underlined font
1481 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1482 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1483 // this behaviour. To workaround this problem, we use a special hack here
1484 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1485 // empty space characters and give them a dummy colour attribute.
1486 // This will force Pango to underline the leading/trailing spaces, too.
1487
1488 // need to realloc the string to prepend & append our special characters
1489 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1490
1491 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1492 strcpy(hackstring, "\342\200\214");
1493
1494 // copy the user string
1495 memcpy(&hackstring[3], data, datalen);
1496
1497 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1498 strcpy(&hackstring[datalen+3], "\342\200\214");
1499
1500 // the special characters that we added require 6 additional bytes:
1501 datalen += 6;
1502
1503 pango_layout_set_text(m_layout, hackstring, datalen);
1504 }
1505 else
1506 {
1507 pango_layout_set_text(m_layout, data, datalen);
1508 }
1509
1510 if (underlined)
1511 {
1512 PangoAttrList *attrs = pango_attr_list_new();
1513 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1514 a->start_index = 0;
1515 a->end_index = datalen;
1516 pango_attr_list_insert(attrs, a);
1517
1518 if (needshack)
1519 {
1520 // dummy colour for the leading space
1521 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1522 a->start_index = 0;
1523 a->end_index = 1;
1524 pango_attr_list_insert(attrs, a);
1525
1526 // dummy colour for the trailing space
1527 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1528 a->start_index = datalen - 1;
1529 a->end_index = datalen;
1530 pango_attr_list_insert(attrs, a);
1531 }
1532
1533 pango_layout_set_attributes(m_layout, attrs);
1534 pango_attr_list_unref(attrs);
1535 }
1536
1537 int w,h;
1538
1539 if (fabs(m_scaleY - 1.0) > 0.00001)
1540 {
1541 // If there is a user or actually any scale applied to
1542 // the device context, scale the font.
1543
1544 // scale font description
1545 gint oldSize = pango_font_description_get_size( m_fontdesc );
1546 double size = oldSize;
1547 size = size * m_scaleY;
1548 pango_font_description_set_size( m_fontdesc, (gint)size );
1549
1550 // actually apply scaled font
1551 pango_layout_set_font_description( m_layout, m_fontdesc );
1552
1553 pango_layout_get_pixel_size( m_layout, &w, &h );
1554 if ( m_backgroundMode == wxSOLID )
1555 {
1556 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1557 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1558 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1559 }
1560
1561 // Draw layout.
1562 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1563 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1564 else
1565 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1566
1567 // reset unscaled size
1568 pango_font_description_set_size( m_fontdesc, oldSize );
1569
1570 // actually apply unscaled font
1571 pango_layout_set_font_description( m_layout, m_fontdesc );
1572 }
1573 else
1574 {
1575 pango_layout_get_pixel_size( m_layout, &w, &h );
1576 if ( m_backgroundMode == wxSOLID )
1577 {
1578 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1579 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1580 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1581 }
1582
1583 // Draw layout.
1584 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1585 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1586 else
1587 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1588 }
1589
1590 if (underlined)
1591 {
1592 // undo underline attributes setting:
1593 pango_layout_set_attributes(m_layout, NULL);
1594 }
1595
1596 wxCoord width = w;
1597 wxCoord height = h;
1598
1599 width = wxCoord(width / m_scaleX);
1600 height = wxCoord(height / m_scaleY);
1601 CalcBoundingBox (x + width, y + height);
1602 CalcBoundingBox (x, y);
1603
1604 if (hackstring)
1605 free(hackstring);
1606 }
1607
1608
1609 // TODO: There is an example of rotating text with GTK2 that would probably be
1610 // a better approach here:
1611 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1612
1613 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1614 {
1615 if (!m_window || text.empty())
1616 return;
1617
1618 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1619
1620 if ( wxIsNullDouble(angle) )
1621 {
1622 DrawText(text, x, y);
1623 return;
1624 }
1625
1626 wxCoord w;
1627 wxCoord h;
1628
1629 // TODO: implement later without GdkFont for GTK 2.0
1630 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1631
1632 // draw the string normally
1633 wxBitmap src(w, h);
1634 wxMemoryDC dc;
1635 dc.SelectObject(src);
1636 dc.SetFont(GetFont());
1637 dc.SetBackground(*wxBLACK_BRUSH);
1638 dc.SetBrush(*wxBLACK_BRUSH);
1639 dc.Clear();
1640 dc.SetTextForeground( *wxWHITE );
1641 dc.DrawText(text, 0, 0);
1642 dc.SelectObject(wxNullBitmap);
1643
1644 // Calculate the size of the rotated bounding box.
1645 double rad = DegToRad(angle);
1646 double dx = cos(rad),
1647 dy = sin(rad);
1648
1649 // the rectngle vertices are counted clockwise with the first one being at
1650 // (0, 0) (or, rather, at (x, y))
1651 double x2 = w*dx,
1652 y2 = -w*dy; // y axis points to the bottom, hence minus
1653 double x4 = h*dy,
1654 y4 = h*dx;
1655 double x3 = x4 + x2,
1656 y3 = y4 + y2;
1657
1658 // calc max and min
1659 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1660 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1661 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1662 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1663
1664
1665 wxImage image = src.ConvertToImage();
1666
1667 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1668 m_textForegroundColour.Green(),
1669 m_textForegroundColour.Blue() );
1670 image = image.Rotate( rad, wxPoint(0,0) );
1671
1672 int i_angle = (int) angle;
1673 i_angle = i_angle % 360;
1674 if (i_angle < 0)
1675 i_angle += 360;
1676 int xoffset = 0;
1677 if ((i_angle >= 90.0) && (i_angle < 270.0))
1678 xoffset = image.GetWidth();
1679 int yoffset = 0;
1680 if ((i_angle >= 0.0) && (i_angle < 180.0))
1681 yoffset = image.GetHeight();
1682
1683 if ((i_angle >= 0) && (i_angle < 90))
1684 yoffset -= (int)( cos(rad)*h );
1685 if ((i_angle >= 90) && (i_angle < 180))
1686 xoffset -= (int)( sin(rad)*h );
1687 if ((i_angle >= 180) && (i_angle < 270))
1688 yoffset -= (int)( cos(rad)*h );
1689 if ((i_angle >= 270) && (i_angle < 360))
1690 xoffset -= (int)( sin(rad)*h );
1691
1692 int i_x = x - xoffset;
1693 int i_y = y - yoffset;
1694
1695 src = image;
1696 DoDrawBitmap( src, i_x, i_y, true );
1697
1698
1699 // it would be better to draw with non underlined font and draw the line
1700 // manually here (it would be more straight...)
1701 #if 0
1702 if ( m_font.GetUnderlined() )
1703 {
1704 gdk_draw_line( m_window, m_textGC,
1705 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1706 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1707 }
1708 #endif // 0
1709
1710 // update the bounding box
1711 CalcBoundingBox(x + minX, y + minY);
1712 CalcBoundingBox(x + maxX, y + maxY);
1713 }
1714
1715 void wxWindowDC::DoGetTextExtent(const wxString &string,
1716 wxCoord *width, wxCoord *height,
1717 wxCoord *descent, wxCoord *externalLeading,
1718 wxFont *theFont) const
1719 {
1720 if ( width )
1721 *width = 0;
1722 if ( height )
1723 *height = 0;
1724 if ( descent )
1725 *descent = 0;
1726 if ( externalLeading )
1727 *externalLeading = 0;
1728
1729 if (string.empty())
1730 return;
1731
1732 // ensure that theFont is always non-NULL
1733 if ( !theFont || !theFont->Ok() )
1734 theFont = wx_const_cast(wxFont *, &m_font);
1735
1736 // and use it if it's valid
1737 if ( theFont->Ok() )
1738 {
1739 pango_layout_set_font_description
1740 (
1741 m_layout,
1742 theFont->GetNativeFontInfo()->description
1743 );
1744 }
1745
1746 // Set layout's text
1747 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1748 if ( !dataUTF8 )
1749 {
1750 // hardly ideal, but what else can we do if conversion failed?
1751 return;
1752 }
1753
1754 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1755
1756 if (descent)
1757 {
1758 int h;
1759 pango_layout_get_pixel_size( m_layout, width, &h );
1760 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1761 int baseline = pango_layout_iter_get_baseline(iter);
1762 pango_layout_iter_free(iter);
1763 *descent = h - PANGO_PIXELS(baseline);
1764
1765 if (height)
1766 *height = (wxCoord) h;
1767 }
1768 else
1769 {
1770 pango_layout_get_pixel_size( m_layout, width, height );
1771 }
1772
1773 // Reset old font description
1774 if (theFont)
1775 pango_layout_set_font_description( m_layout, m_fontdesc );
1776 }
1777
1778 wxCoord wxWindowDC::GetCharWidth() const
1779 {
1780 pango_layout_set_text( m_layout, "H", 1 );
1781 int w;
1782 pango_layout_get_pixel_size( m_layout, &w, NULL );
1783 return w;
1784 }
1785
1786 wxCoord wxWindowDC::GetCharHeight() const
1787 {
1788 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1789 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1790 }
1791
1792 void wxWindowDC::Clear()
1793 {
1794 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1795
1796 if (!m_window) return;
1797
1798 // VZ: the code below results in infinite recursion and crashes when
1799 // dc.Clear() is done from OnPaint() so I disable it for now.
1800 // I don't know what the correct fix is but Clear() surely should not
1801 // reenter OnPaint()!
1802 #if 0
1803 /* - we either are a memory dc or have a window as the
1804 owner. anything else shouldn't happen.
1805 - we don't use gdk_window_clear() as we don't set
1806 the window's background colour anymore. it is too
1807 much pain to keep the DC's and the window's back-
1808 ground colour in synch. */
1809
1810 if (m_owner)
1811 {
1812 m_owner->Clear();
1813 return;
1814 }
1815
1816 if (m_isMemDC)
1817 {
1818 int width,height;
1819 GetSize( &width, &height );
1820 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1821 return;
1822 }
1823 #else // 1
1824 int width,height;
1825 GetSize( &width, &height );
1826 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1827 #endif // 0/1
1828 }
1829
1830 void wxWindowDC::SetFont( const wxFont &font )
1831 {
1832 m_font = font;
1833
1834 if (m_font.Ok())
1835 {
1836 if (m_fontdesc)
1837 pango_font_description_free( m_fontdesc );
1838
1839 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1840
1841
1842 if (m_owner)
1843 {
1844 PangoContext *oldContext = m_context;
1845
1846 m_context = m_owner->GtkGetPangoDefaultContext();
1847
1848 // If we switch back/forth between different contexts
1849 // we also have to create a new layout. I think so,
1850 // at least, and it doesn't hurt to do it.
1851 if (oldContext != m_context)
1852 {
1853 if (m_layout)
1854 g_object_unref (m_layout);
1855
1856 m_layout = pango_layout_new( m_context );
1857 }
1858 }
1859
1860 pango_layout_set_font_description( m_layout, m_fontdesc );
1861 }
1862 }
1863
1864 void wxWindowDC::SetPen( const wxPen &pen )
1865 {
1866 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1867
1868 if (m_pen == pen) return;
1869
1870 m_pen = pen;
1871
1872 if (!m_pen.Ok()) return;
1873
1874 if (!m_window) return;
1875
1876 gint width = m_pen.GetWidth();
1877 if (width <= 0)
1878 {
1879 // CMB: if width is non-zero scale it with the dc
1880 width = 1;
1881 }
1882 else
1883 {
1884 // X doesn't allow different width in x and y and so we take
1885 // the average
1886 double w = 0.5 +
1887 ( fabs((double) XLOG2DEVREL(width)) +
1888 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1889 width = (int)w;
1890 if ( !width )
1891 {
1892 // width can't be 0 or an internal GTK error occurs inside
1893 // gdk_gc_set_dashes() below
1894 width = 1;
1895 }
1896 }
1897
1898 static const wxGTKDash dotted[] = {1, 1};
1899 static const wxGTKDash short_dashed[] = {2, 2};
1900 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1901 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1902
1903 // We express dash pattern in pen width unit, so we are
1904 // independent of zoom factor and so on...
1905 int req_nb_dash;
1906 const wxGTKDash *req_dash;
1907
1908 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1909 switch (m_pen.GetStyle())
1910 {
1911 case wxUSER_DASH:
1912 {
1913 lineStyle = GDK_LINE_ON_OFF_DASH;
1914 req_nb_dash = m_pen.GetDashCount();
1915 req_dash = (wxGTKDash*)m_pen.GetDash();
1916 break;
1917 }
1918 case wxDOT:
1919 {
1920 lineStyle = GDK_LINE_ON_OFF_DASH;
1921 req_nb_dash = 2;
1922 req_dash = dotted;
1923 break;
1924 }
1925 case wxLONG_DASH:
1926 {
1927 lineStyle = GDK_LINE_ON_OFF_DASH;
1928 req_nb_dash = 2;
1929 req_dash = wxCoord_dashed;
1930 break;
1931 }
1932 case wxSHORT_DASH:
1933 {
1934 lineStyle = GDK_LINE_ON_OFF_DASH;
1935 req_nb_dash = 2;
1936 req_dash = short_dashed;
1937 break;
1938 }
1939 case wxDOT_DASH:
1940 {
1941 // lineStyle = GDK_LINE_DOUBLE_DASH;
1942 lineStyle = GDK_LINE_ON_OFF_DASH;
1943 req_nb_dash = 4;
1944 req_dash = dotted_dashed;
1945 break;
1946 }
1947
1948 case wxTRANSPARENT:
1949 case wxSTIPPLE_MASK_OPAQUE:
1950 case wxSTIPPLE:
1951 case wxSOLID:
1952 default:
1953 {
1954 lineStyle = GDK_LINE_SOLID;
1955 req_dash = (wxGTKDash*)NULL;
1956 req_nb_dash = 0;
1957 break;
1958 }
1959 }
1960
1961 if (req_dash && req_nb_dash)
1962 {
1963 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1964 if (real_req_dash)
1965 {
1966 for (int i = 0; i < req_nb_dash; i++)
1967 real_req_dash[i] = req_dash[i] * width;
1968 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1969 delete[] real_req_dash;
1970 }
1971 else
1972 {
1973 // No Memory. We use non-scaled dash pattern...
1974 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1975 }
1976 }
1977
1978 GdkCapStyle capStyle = GDK_CAP_ROUND;
1979 switch (m_pen.GetCap())
1980 {
1981 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1982 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1983 case wxCAP_ROUND:
1984 default:
1985 {
1986 if (width <= 1)
1987 {
1988 width = 0;
1989 capStyle = GDK_CAP_NOT_LAST;
1990 }
1991 else
1992 {
1993 capStyle = GDK_CAP_ROUND;
1994 }
1995 break;
1996 }
1997 }
1998
1999 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
2000 switch (m_pen.GetJoin())
2001 {
2002 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2003 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2004 case wxJOIN_ROUND:
2005 default: { joinStyle = GDK_JOIN_ROUND; break; }
2006 }
2007
2008 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2009
2010 m_pen.GetColour().CalcPixel( m_cmap );
2011 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2012 }
2013
2014 void wxWindowDC::SetBrush( const wxBrush &brush )
2015 {
2016 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2017
2018 if (m_brush == brush) return;
2019
2020 m_brush = brush;
2021
2022 if (!m_brush.Ok()) return;
2023
2024 if (!m_window) return;
2025
2026 m_brush.GetColour().CalcPixel( m_cmap );
2027 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2028
2029 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2030
2031 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2032 {
2033 if (m_brush.GetStipple()->GetDepth() != 1)
2034 {
2035 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2036 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2037 }
2038 else
2039 {
2040 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2041 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2042 }
2043 }
2044
2045 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2046 {
2047 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2048 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2049 }
2050
2051 if (m_brush.IsHatch())
2052 {
2053 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2054 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2055 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2056 }
2057 }
2058
2059 void wxWindowDC::SetBackground( const wxBrush &brush )
2060 {
2061 /* CMB 21/7/98: Added SetBackground. Sets background brush
2062 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2063
2064 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2065
2066 if (m_backgroundBrush == brush) return;
2067
2068 m_backgroundBrush = brush;
2069
2070 if (!m_backgroundBrush.Ok()) return;
2071
2072 if (!m_window) return;
2073
2074 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2075 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2076 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2077 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2078 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2079
2080 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2081
2082 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2083 {
2084 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2085 {
2086 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2087 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2088 }
2089 else
2090 {
2091 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2092 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2093 }
2094 }
2095
2096 if (m_backgroundBrush.IsHatch())
2097 {
2098 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2099 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2100 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2101 }
2102 }
2103
2104 void wxWindowDC::SetLogicalFunction( int function )
2105 {
2106 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2107
2108 if (m_logicalFunction == function)
2109 return;
2110
2111 // VZ: shouldn't this be a CHECK?
2112 if (!m_window)
2113 return;
2114
2115 GdkFunction mode;
2116 switch (function)
2117 {
2118 case wxXOR: mode = GDK_XOR; break;
2119 case wxINVERT: mode = GDK_INVERT; break;
2120 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2121 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2122 case wxCLEAR: mode = GDK_CLEAR; break;
2123 case wxSET: mode = GDK_SET; break;
2124 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2125 case wxAND: mode = GDK_AND; break;
2126 case wxOR: mode = GDK_OR; break;
2127 case wxEQUIV: mode = GDK_EQUIV; break;
2128 case wxNAND: mode = GDK_NAND; break;
2129 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2130 case wxCOPY: mode = GDK_COPY; break;
2131 case wxNO_OP: mode = GDK_NOOP; break;
2132 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2133
2134 // unsupported by GTK
2135 case wxNOR: mode = GDK_COPY; break;
2136 default:
2137 wxFAIL_MSG( wxT("unsupported logical function") );
2138 mode = GDK_COPY;
2139 }
2140
2141 m_logicalFunction = function;
2142
2143 gdk_gc_set_function( m_penGC, mode );
2144 gdk_gc_set_function( m_brushGC, mode );
2145
2146 // to stay compatible with wxMSW, we don't apply ROPs to the text
2147 // operations (i.e. DrawText/DrawRotatedText).
2148 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2149 gdk_gc_set_function( m_textGC, mode );
2150 }
2151
2152 void wxWindowDC::SetTextForeground( const wxColour &col )
2153 {
2154 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2155
2156 // don't set m_textForegroundColour to an invalid colour as we'd crash
2157 // later then (we use m_textForegroundColour.GetColor() without checking
2158 // in a few places)
2159 if ( !col.Ok() || (m_textForegroundColour == col) )
2160 return;
2161
2162 m_textForegroundColour = col;
2163
2164 if ( m_window )
2165 {
2166 m_textForegroundColour.CalcPixel( m_cmap );
2167 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2168 }
2169 }
2170
2171 void wxWindowDC::SetTextBackground( const wxColour &col )
2172 {
2173 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2174
2175 // same as above
2176 if ( !col.Ok() || (m_textBackgroundColour == col) )
2177 return;
2178
2179 m_textBackgroundColour = col;
2180
2181 if ( m_window )
2182 {
2183 m_textBackgroundColour.CalcPixel( m_cmap );
2184 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2185 }
2186 }
2187
2188 void wxWindowDC::SetBackgroundMode( int mode )
2189 {
2190 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2191
2192 m_backgroundMode = mode;
2193
2194 if (!m_window) return;
2195
2196 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2197 // transparent/solid background mode
2198
2199 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2200 {
2201 gdk_gc_set_fill( m_brushGC,
2202 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2203 }
2204 }
2205
2206 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2207 {
2208 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2209 }
2210
2211 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2212 {
2213 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2214
2215 if (!m_window) return;
2216
2217 wxRect rect;
2218 rect.x = XLOG2DEV(x);
2219 rect.y = YLOG2DEV(y);
2220 rect.width = XLOG2DEVREL(width);
2221 rect.height = YLOG2DEVREL(height);
2222
2223 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2224 {
2225 rect.x -= rect.width;
2226 }
2227
2228 if (!m_currentClippingRegion.IsNull())
2229 m_currentClippingRegion.Intersect( rect );
2230 else
2231 m_currentClippingRegion.Union( rect );
2232
2233 #if USE_PAINT_REGION
2234 if (!m_paintClippingRegion.IsNull())
2235 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2236 #endif
2237
2238 wxCoord xx, yy, ww, hh;
2239 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2240 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2241
2242 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2243 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2244 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2245 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2246 }
2247
2248 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2249 {
2250 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2251
2252 if (region.Empty())
2253 {
2254 DestroyClippingRegion();
2255 return;
2256 }
2257
2258 if (!m_window) return;
2259
2260 if (!m_currentClippingRegion.IsNull())
2261 m_currentClippingRegion.Intersect( region );
2262 else
2263 m_currentClippingRegion.Union( region );
2264
2265 #if USE_PAINT_REGION
2266 if (!m_paintClippingRegion.IsNull())
2267 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2268 #endif
2269
2270 wxCoord xx, yy, ww, hh;
2271 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2272 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2273
2274 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2275 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2276 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2277 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2278 }
2279
2280 void wxWindowDC::DestroyClippingRegion()
2281 {
2282 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2283
2284 wxDC::DestroyClippingRegion();
2285
2286 m_currentClippingRegion.Clear();
2287
2288 #if USE_PAINT_REGION
2289 if (!m_paintClippingRegion.IsEmpty())
2290 m_currentClippingRegion.Union( m_paintClippingRegion );
2291 #endif
2292
2293 if (!m_window) return;
2294
2295 if (m_currentClippingRegion.IsEmpty())
2296 {
2297 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2298 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2299 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2300 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2301 }
2302 else
2303 {
2304 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2305 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2306 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2307 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2308 }
2309 }
2310
2311 void wxWindowDC::Destroy()
2312 {
2313 if (m_penGC) wxFreePoolGC( m_penGC );
2314 m_penGC = (GdkGC*) NULL;
2315 if (m_brushGC) wxFreePoolGC( m_brushGC );
2316 m_brushGC = (GdkGC*) NULL;
2317 if (m_textGC) wxFreePoolGC( m_textGC );
2318 m_textGC = (GdkGC*) NULL;
2319 if (m_bgGC) wxFreePoolGC( m_bgGC );
2320 m_bgGC = (GdkGC*) NULL;
2321 }
2322
2323 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2324 {
2325 m_deviceOriginX = x;
2326 m_deviceOriginY = y;
2327
2328 ComputeScaleAndOrigin();
2329 }
2330
2331 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2332 {
2333 m_signX = (xLeftRight ? 1 : -1);
2334 m_signY = (yBottomUp ? -1 : 1);
2335
2336 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2337 m_signX = -m_signX;
2338
2339 ComputeScaleAndOrigin();
2340 }
2341
2342 void wxWindowDC::ComputeScaleAndOrigin()
2343 {
2344 const wxRealPoint origScale(m_scaleX, m_scaleY);
2345
2346 wxDC::ComputeScaleAndOrigin();
2347
2348 // if scale has changed call SetPen to recalulate the line width
2349 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2350 {
2351 // this is a bit artificial, but we need to force wxDC to think the pen
2352 // has changed
2353 wxPen pen = m_pen;
2354 m_pen = wxNullPen;
2355 SetPen( pen );
2356 }
2357 }
2358
2359 // Resolution in pixels per logical inch
2360 wxSize wxWindowDC::GetPPI() const
2361 {
2362 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2363 }
2364
2365 int wxWindowDC::GetDepth() const
2366 {
2367 return gdk_drawable_get_depth(m_window);
2368 }
2369
2370
2371 //-----------------------------------------------------------------------------
2372 // wxPaintDC
2373 //-----------------------------------------------------------------------------
2374
2375 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2376
2377 // Limit the paint region to the window size. Sometimes
2378 // the paint region is too big, and this risks X11 errors
2379 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2380 {
2381 wxRect originalRect = region.GetBox();
2382 wxRect rect(originalRect);
2383 if (rect.width + rect.x > sz.x)
2384 rect.width = sz.x - rect.x;
2385 if (rect.height + rect.y > sz.y)
2386 rect.height = sz.y - rect.y;
2387 if (rect != originalRect)
2388 {
2389 region = wxRegion(rect);
2390 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2391 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2392 rect.x, rect.y, rect.width, rect.height);
2393 }
2394 }
2395
2396 wxPaintDC::wxPaintDC( wxWindow *win )
2397 : wxClientDC( win )
2398 {
2399 #if USE_PAINT_REGION
2400 if (!win->m_clipPaintRegion)
2401 return;
2402
2403 wxSize sz = win->GetSize();
2404 m_paintClippingRegion = win->m_nativeUpdateRegion;
2405 wxLimitRegionToSize(m_paintClippingRegion, sz);
2406
2407 GdkRegion *region = m_paintClippingRegion.GetRegion();
2408 if ( region )
2409 {
2410 m_currentClippingRegion.Union( m_paintClippingRegion );
2411 wxLimitRegionToSize(m_currentClippingRegion, sz);
2412
2413 if (sz.x <= 0 || sz.y <= 0)
2414 return ;
2415
2416 gdk_gc_set_clip_region( m_penGC, region );
2417 gdk_gc_set_clip_region( m_brushGC, region );
2418 gdk_gc_set_clip_region( m_textGC, region );
2419 gdk_gc_set_clip_region( m_bgGC, region );
2420 }
2421 #endif // USE_PAINT_REGION
2422 }
2423
2424 //-----------------------------------------------------------------------------
2425 // wxClientDC
2426 //-----------------------------------------------------------------------------
2427
2428 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2429
2430 wxClientDC::wxClientDC( wxWindow *win )
2431 : wxWindowDC( win )
2432 {
2433 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2434
2435 #ifdef __WXUNIVERSAL__
2436 wxPoint ptOrigin = win->GetClientAreaOrigin();
2437 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2438 wxSize size = win->GetClientSize();
2439 SetClippingRegion(wxPoint(0, 0), size);
2440 #endif // __WXUNIVERSAL__
2441 }
2442
2443 void wxClientDC::DoGetSize(int *width, int *height) const
2444 {
2445 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2446
2447 m_owner->GetClientSize( width, height );
2448 }
2449
2450 // ----------------------------------------------------------------------------
2451 // wxDCModule
2452 // ----------------------------------------------------------------------------
2453
2454 class wxDCModule : public wxModule
2455 {
2456 public:
2457 bool OnInit();
2458 void OnExit();
2459
2460 private:
2461 DECLARE_DYNAMIC_CLASS(wxDCModule)
2462 };
2463
2464 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2465
2466 bool wxDCModule::OnInit()
2467 {
2468 wxInitGCPool();
2469 return true;
2470 }
2471
2472 void wxDCModule::OnExit()
2473 {
2474 wxCleanUpGCPool();
2475 }
wxWidgets (Impactor)