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don't use Pango hack for drawing underlined text when using new enough version of...
[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 wxBitmap selected;
1221 wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
1222 if ( memDC )
1223 {
1224 selected = memDC->GetSelectedBitmap();
1225 if ( !selected.IsOk() )
1226 return false;
1227 }
1228
1229 bool use_bitmap_method = false;
1230 bool is_mono = false;
1231
1232 if (xsrcMask == -1 && ysrcMask == -1)
1233 {
1234 xsrcMask = xsrc;
1235 ysrcMask = ysrc;
1236 }
1237
1238 if (selected.Ok())
1239 {
1240 is_mono = (selected.GetDepth() == 1);
1241
1242 // we use the "XCopyArea" way to copy a memory dc into
1243 // a different window if the memory dc BOTH
1244 // a) doesn't have any mask or its mask isn't used
1245 // b) it is clipped
1246 // c) is not 1-bit
1247
1248 if (useMask && (selected.GetMask()))
1249 {
1250 // we HAVE TO use the direct way for memory dcs
1251 // that have mask since the XCopyArea doesn't know
1252 // about masks
1253 use_bitmap_method = true;
1254 }
1255 else if (is_mono)
1256 {
1257 // we HAVE TO use the direct way for memory dcs
1258 // that are bitmaps because XCopyArea doesn't cope
1259 // with different bit depths
1260 use_bitmap_method = true;
1261 }
1262 else if ((xsrc == 0) && (ysrc == 0) &&
1263 (width == selected.GetWidth()) &&
1264 (height == selected.GetHeight()))
1265 {
1266 // we SHOULD use the direct way if all of the bitmap
1267 // in the memory dc is copied in which case XCopyArea
1268 // wouldn't be able able to boost performace by reducing
1269 // the area to be scaled
1270 use_bitmap_method = true;
1271 }
1272 }
1273
1274 CalcBoundingBox( xdest, ydest );
1275 CalcBoundingBox( xdest + width, ydest + height );
1276
1277 // scale/translate size and position
1278 wxCoord xx = XLOG2DEV(xdest);
1279 wxCoord yy = YLOG2DEV(ydest);
1280
1281 wxCoord ww = XLOG2DEVREL(width);
1282 wxCoord hh = YLOG2DEVREL(height);
1283
1284 // compare to current clipping region
1285 if (!m_currentClippingRegion.IsNull())
1286 {
1287 wxRegion tmp( xx,yy,ww,hh );
1288 tmp.Intersect( m_currentClippingRegion );
1289 if (tmp.IsEmpty())
1290 return true;
1291 }
1292
1293 int old_logical_func = m_logicalFunction;
1294 SetLogicalFunction( logical_func );
1295
1296 if (use_bitmap_method)
1297 {
1298 // scale/translate bitmap size
1299 wxCoord bm_width = selected.GetWidth();
1300 wxCoord bm_height = selected.GetHeight();
1301
1302 // Get clip coords for the bitmap. If we don't
1303 // use wxBitmap::Rescale(), which can clip the
1304 // bitmap, these are the same as the original
1305 // coordinates
1306 wxCoord cx = xx;
1307 wxCoord cy = yy;
1308 wxCoord cw = ww;
1309 wxCoord ch = hh;
1310
1311 // interpret userscale of src too
1312 double xsc,ysc;
1313 memDC->GetUserScale(&xsc,&ysc);
1314 bm_width = (int) (bm_width / xsc);
1315 bm_height = (int) (bm_height / ysc);
1316
1317 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1318 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1319
1320 // Scale bitmap if required
1321 wxBitmap use_bitmap = selected;
1322 if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
1323 {
1324 // This indicates that the blitting code below will get
1325 // a clipped bitmap and therefore needs to move the origin
1326 // accordingly
1327 wxRegion tmp( xx,yy,ww,hh );
1328 if (!m_currentClippingRegion.IsNull())
1329 tmp.Intersect( m_currentClippingRegion );
1330 tmp.GetBox(cx,cy,cw,ch);
1331
1332 // Scale and clipped bitmap
1333 use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1334 }
1335
1336 // apply mask if any
1337 GdkBitmap *mask = (GdkBitmap *) NULL;
1338 if (useMask && use_bitmap.GetMask())
1339 mask = use_bitmap.GetMask()->GetBitmap();
1340
1341 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1342
1343 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1344
1345 if (mask != NULL)
1346 {
1347 if (!m_currentClippingRegion.IsNull())
1348 {
1349 GdkColor col;
1350 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1351 GdkGC *gc = gdk_gc_new( new_mask );
1352 col.pixel = 0;
1353 gdk_gc_set_foreground( gc, &col );
1354 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1355 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1356 col.pixel = 0;
1357 gdk_gc_set_background( gc, &col );
1358 col.pixel = 1;
1359 gdk_gc_set_foreground( gc, &col );
1360 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1361 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1362 gdk_gc_set_clip_origin( gc, -cx, -cy );
1363 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1364 gdk_gc_set_stipple( gc, mask );
1365 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1366 mask = new_mask;
1367 g_object_unref (gc);
1368 }
1369
1370 gdk_gc_set_clip_mask(use_gc, mask);
1371 if (new_mask != NULL)
1372 gdk_gc_set_clip_origin(use_gc, cx, cy);
1373 else
1374 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1375 }
1376
1377 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1378 // drawing a mono-bitmap (XBitmap) we use the current text GC
1379
1380 if (is_mono)
1381 {
1382 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1383 GdkGC *gc = gdk_gc_new( bitmap );
1384 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1385 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1386 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1387
1388 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1389
1390 g_object_unref (bitmap);
1391 g_object_unref (gc);
1392 }
1393 else
1394 {
1395 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1396 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1397 }
1398
1399 // remove mask again if any
1400 if (mask != NULL)
1401 {
1402 gdk_gc_set_clip_mask(use_gc, NULL);
1403 gdk_gc_set_clip_origin(use_gc, 0, 0);
1404 if (!m_currentClippingRegion.IsNull())
1405 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1406 }
1407
1408 if (new_mask)
1409 g_object_unref (new_mask);
1410 }
1411 else // use_bitmap_method
1412 {
1413 if (selected.Ok() && ((width != ww) || (height != hh)))
1414 {
1415 // get clip coords
1416 wxRegion tmp( xx,yy,ww,hh );
1417 tmp.Intersect( m_currentClippingRegion );
1418 wxCoord cx,cy,cw,ch;
1419 tmp.GetBox(cx,cy,cw,ch);
1420
1421 // rescale bitmap
1422 wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1423
1424 // draw scaled bitmap
1425 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1426 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1427 }
1428 else
1429 {
1430 // No scaling and not a memory dc with a mask either
1431
1432 GdkWindow* window = source->GetGDKWindow();
1433 if ( !window )
1434 return false;
1435
1436 // copy including child window contents
1437 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1438 gdk_draw_drawable( m_window, m_penGC,
1439 window,
1440 xsrc, ysrc, xx, yy,
1441 width, height );
1442 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1443 }
1444 }
1445
1446 SetLogicalFunction( old_logical_func );
1447
1448 return true;
1449 }
1450
1451 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1452 {
1453 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1454
1455 if (!m_window) return;
1456
1457 if (text.empty()) return;
1458
1459 x = XLOG2DEV(x);
1460 y = YLOG2DEV(y);
1461
1462 wxCHECK_RET( m_context, wxT("no Pango context") );
1463 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1464 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1465
1466 gdk_pango_context_set_colormap( m_context, m_cmap );
1467
1468 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1469
1470 const wxCharBuffer data = wxGTK_CONV( text );
1471 if ( !data )
1472 return;
1473 size_t datalen = strlen(data);
1474
1475 #ifdef PANGO_VERSION_MAJOR
1476 // in Pango >= 1.16 the "underline of leading/trailing spaces" bug has been fixed...
1477 static bool pangoOk = (pango_version_check(1, 16, 1) == NULL);
1478 #else
1479 // the version of Pango used for compiling wxWidgets does not have version macros/functions...
1480 // we are forced to assume that the run-time version of Pango is older than 1.16
1481 const bool pangoOk = false;
1482 #endif
1483
1484 bool needshack = underlined && !pangoOk;
1485 char *hackstring = NULL;
1486
1487 if (needshack)
1488 {
1489 // a PangoLayout which has leading/trailing spaces with underlined font
1490 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1491 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1492 // this behaviour. To workaround this problem, we use a special hack here
1493 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1494 // empty space characters and give them a dummy colour attribute.
1495 // This will force Pango to underline the leading/trailing spaces, too.
1496
1497 // need to realloc the string to prepend & append our special characters
1498 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1499
1500 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1501 strcpy(hackstring, "\342\200\214");
1502
1503 // copy the user string
1504 memcpy(&hackstring[3], data, datalen);
1505
1506 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1507 strcpy(&hackstring[datalen+3], "\342\200\214");
1508
1509 // the special characters that we added require 6 additional bytes:
1510 datalen += 6;
1511
1512 pango_layout_set_text(m_layout, hackstring, datalen);
1513 }
1514 else
1515 {
1516 pango_layout_set_text(m_layout, data, datalen);
1517 }
1518
1519 if (underlined)
1520 {
1521 PangoAttrList *attrs = pango_attr_list_new();
1522 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1523 a->start_index = 0;
1524 a->end_index = datalen;
1525 pango_attr_list_insert(attrs, a);
1526
1527 if (needshack)
1528 {
1529 // dummy colour for the leading space
1530 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1531 a->start_index = 0;
1532 a->end_index = 1;
1533 pango_attr_list_insert(attrs, a);
1534
1535 // dummy colour for the trailing space
1536 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1537 a->start_index = datalen - 1;
1538 a->end_index = datalen;
1539 pango_attr_list_insert(attrs, a);
1540 }
1541
1542 pango_layout_set_attributes(m_layout, attrs);
1543 pango_attr_list_unref(attrs);
1544 }
1545
1546 int w,h;
1547
1548 if (fabs(m_scaleY - 1.0) > 0.00001)
1549 {
1550 // If there is a user or actually any scale applied to
1551 // the device context, scale the font.
1552
1553 // scale font description
1554 gint oldSize = pango_font_description_get_size( m_fontdesc );
1555 double size = oldSize;
1556 size = size * m_scaleY;
1557 pango_font_description_set_size( m_fontdesc, (gint)size );
1558
1559 // actually apply scaled font
1560 pango_layout_set_font_description( m_layout, m_fontdesc );
1561
1562 pango_layout_get_pixel_size( m_layout, &w, &h );
1563 if ( m_backgroundMode == wxSOLID )
1564 {
1565 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1566 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1567 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1568 }
1569
1570 // Draw layout.
1571 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1572 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1573 else
1574 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1575
1576 // reset unscaled size
1577 pango_font_description_set_size( m_fontdesc, oldSize );
1578
1579 // actually apply unscaled font
1580 pango_layout_set_font_description( m_layout, m_fontdesc );
1581 }
1582 else
1583 {
1584 pango_layout_get_pixel_size( m_layout, &w, &h );
1585 if ( m_backgroundMode == wxSOLID )
1586 {
1587 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1588 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1589 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1590 }
1591
1592 // Draw layout.
1593 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1594 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1595 else
1596 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1597 }
1598
1599 if (underlined)
1600 {
1601 // undo underline attributes setting:
1602 pango_layout_set_attributes(m_layout, NULL);
1603 }
1604
1605 wxCoord width = w;
1606 wxCoord height = h;
1607
1608 width = wxCoord(width / m_scaleX);
1609 height = wxCoord(height / m_scaleY);
1610 CalcBoundingBox (x + width, y + height);
1611 CalcBoundingBox (x, y);
1612
1613 if (hackstring)
1614 free(hackstring);
1615 }
1616
1617
1618 // TODO: There is an example of rotating text with GTK2 that would probably be
1619 // a better approach here:
1620 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1621
1622 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1623 {
1624 if (!m_window || text.empty())
1625 return;
1626
1627 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1628
1629 if ( wxIsNullDouble(angle) )
1630 {
1631 DrawText(text, x, y);
1632 return;
1633 }
1634
1635 wxCoord w;
1636 wxCoord h;
1637
1638 // TODO: implement later without GdkFont for GTK 2.0
1639 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1640
1641 // draw the string normally
1642 wxBitmap src(w, h);
1643 wxMemoryDC dc;
1644 dc.SelectObject(src);
1645 dc.SetFont(GetFont());
1646 dc.SetBackground(*wxBLACK_BRUSH);
1647 dc.SetBrush(*wxBLACK_BRUSH);
1648 dc.Clear();
1649 dc.SetTextForeground( *wxWHITE );
1650 dc.DrawText(text, 0, 0);
1651 dc.SelectObject(wxNullBitmap);
1652
1653 // Calculate the size of the rotated bounding box.
1654 double rad = DegToRad(angle);
1655 double dx = cos(rad),
1656 dy = sin(rad);
1657
1658 // the rectngle vertices are counted clockwise with the first one being at
1659 // (0, 0) (or, rather, at (x, y))
1660 double x2 = w*dx,
1661 y2 = -w*dy; // y axis points to the bottom, hence minus
1662 double x4 = h*dy,
1663 y4 = h*dx;
1664 double x3 = x4 + x2,
1665 y3 = y4 + y2;
1666
1667 // calc max and min
1668 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1669 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1670 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1671 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1672
1673
1674 wxImage image = src.ConvertToImage();
1675
1676 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1677 m_textForegroundColour.Green(),
1678 m_textForegroundColour.Blue() );
1679 image = image.Rotate( rad, wxPoint(0,0) );
1680
1681 int i_angle = (int) angle;
1682 i_angle = i_angle % 360;
1683 if (i_angle < 0)
1684 i_angle += 360;
1685 int xoffset = 0;
1686 if ((i_angle >= 90.0) && (i_angle < 270.0))
1687 xoffset = image.GetWidth();
1688 int yoffset = 0;
1689 if ((i_angle >= 0.0) && (i_angle < 180.0))
1690 yoffset = image.GetHeight();
1691
1692 if ((i_angle >= 0) && (i_angle < 90))
1693 yoffset -= (int)( cos(rad)*h );
1694 if ((i_angle >= 90) && (i_angle < 180))
1695 xoffset -= (int)( sin(rad)*h );
1696 if ((i_angle >= 180) && (i_angle < 270))
1697 yoffset -= (int)( cos(rad)*h );
1698 if ((i_angle >= 270) && (i_angle < 360))
1699 xoffset -= (int)( sin(rad)*h );
1700
1701 int i_x = x - xoffset;
1702 int i_y = y - yoffset;
1703
1704 src = image;
1705 DoDrawBitmap( src, i_x, i_y, true );
1706
1707
1708 // it would be better to draw with non underlined font and draw the line
1709 // manually here (it would be more straight...)
1710 #if 0
1711 if ( m_font.GetUnderlined() )
1712 {
1713 gdk_draw_line( m_window, m_textGC,
1714 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1715 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1716 }
1717 #endif // 0
1718
1719 // update the bounding box
1720 CalcBoundingBox(x + minX, y + minY);
1721 CalcBoundingBox(x + maxX, y + maxY);
1722 }
1723
1724 void wxWindowDC::DoGetTextExtent(const wxString &string,
1725 wxCoord *width, wxCoord *height,
1726 wxCoord *descent, wxCoord *externalLeading,
1727 wxFont *theFont) const
1728 {
1729 if ( width )
1730 *width = 0;
1731 if ( height )
1732 *height = 0;
1733 if ( descent )
1734 *descent = 0;
1735 if ( externalLeading )
1736 *externalLeading = 0;
1737
1738 if (string.empty())
1739 return;
1740
1741 // ensure that theFont is always non-NULL
1742 if ( !theFont || !theFont->Ok() )
1743 theFont = wx_const_cast(wxFont *, &m_font);
1744
1745 // and use it if it's valid
1746 if ( theFont->Ok() )
1747 {
1748 pango_layout_set_font_description
1749 (
1750 m_layout,
1751 theFont->GetNativeFontInfo()->description
1752 );
1753 }
1754
1755 // Set layout's text
1756 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1757 if ( !dataUTF8 )
1758 {
1759 // hardly ideal, but what else can we do if conversion failed?
1760 return;
1761 }
1762
1763 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1764
1765 if (descent)
1766 {
1767 int h;
1768 pango_layout_get_pixel_size( m_layout, width, &h );
1769 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1770 int baseline = pango_layout_iter_get_baseline(iter);
1771 pango_layout_iter_free(iter);
1772 *descent = h - PANGO_PIXELS(baseline);
1773
1774 if (height)
1775 *height = (wxCoord) h;
1776 }
1777 else
1778 {
1779 pango_layout_get_pixel_size( m_layout, width, height );
1780 }
1781
1782 // Reset old font description
1783 if (theFont->IsOk())
1784 pango_layout_set_font_description( m_layout, m_fontdesc );
1785 }
1786
1787
1788 bool wxWindowDC::DoGetPartialTextExtents(const wxString& text,
1789 wxArrayInt& widths) const
1790 {
1791 const size_t len = text.length();
1792 widths.Empty();
1793 widths.Add(0, len);
1794
1795 if (text.empty())
1796 return true;
1797
1798 // Set layout's text
1799 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(text, m_font);
1800 if ( !dataUTF8 )
1801 {
1802 // hardly ideal, but what else can we do if conversion failed?
1803 wxLogLastError(wxT("DoGetPartialTextExtents"));
1804 return false;
1805 }
1806
1807 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1808
1809 // Calculate the position of each character based on the widths of
1810 // the previous characters
1811
1812 // Code borrowed from Scintilla's PlatGTK
1813 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1814 PangoRectangle pos;
1815 pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
1816 size_t i = 0;
1817 while (pango_layout_iter_next_cluster(iter))
1818 {
1819 pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
1820 int position = PANGO_PIXELS(pos.x);
1821 widths[i++] = position;
1822 }
1823 while (i < len)
1824 widths[i++] = PANGO_PIXELS(pos.x + pos.width);
1825 pango_layout_iter_free(iter);
1826
1827 return true;
1828 }
1829
1830
1831 wxCoord wxWindowDC::GetCharWidth() const
1832 {
1833 pango_layout_set_text( m_layout, "H", 1 );
1834 int w;
1835 pango_layout_get_pixel_size( m_layout, &w, NULL );
1836 return w;
1837 }
1838
1839 wxCoord wxWindowDC::GetCharHeight() const
1840 {
1841 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1842 wxCHECK_MSG( metrics, -1, _T("failed to get pango font metrics") );
1843
1844 wxCoord h = PANGO_PIXELS (pango_font_metrics_get_descent (metrics) +
1845 pango_font_metrics_get_ascent (metrics));
1846 pango_font_metrics_unref (metrics);
1847 return h;
1848 }
1849
1850 void wxWindowDC::Clear()
1851 {
1852 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1853
1854 if (!m_window) return;
1855
1856 // VZ: the code below results in infinite recursion and crashes when
1857 // dc.Clear() is done from OnPaint() so I disable it for now.
1858 // I don't know what the correct fix is but Clear() surely should not
1859 // reenter OnPaint()!
1860 #if 0
1861 /* - we either are a memory dc or have a window as the
1862 owner. anything else shouldn't happen.
1863 - we don't use gdk_window_clear() as we don't set
1864 the window's background colour anymore. it is too
1865 much pain to keep the DC's and the window's back-
1866 ground colour in synch. */
1867
1868 if (m_owner)
1869 {
1870 m_owner->Clear();
1871 return;
1872 }
1873
1874 if (m_isMemDC)
1875 {
1876 int width,height;
1877 GetSize( &width, &height );
1878 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1879 return;
1880 }
1881 #else // 1
1882 int width,height;
1883 GetSize( &width, &height );
1884 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1885 #endif // 0/1
1886 }
1887
1888 void wxWindowDC::SetFont( const wxFont &font )
1889 {
1890 m_font = font;
1891
1892 if (m_font.Ok())
1893 {
1894 if (m_fontdesc)
1895 pango_font_description_free( m_fontdesc );
1896
1897 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1898
1899
1900 if (m_owner)
1901 {
1902 PangoContext *oldContext = m_context;
1903
1904 m_context = m_owner->GtkGetPangoDefaultContext();
1905
1906 // If we switch back/forth between different contexts
1907 // we also have to create a new layout. I think so,
1908 // at least, and it doesn't hurt to do it.
1909 if (oldContext != m_context)
1910 {
1911 if (m_layout)
1912 g_object_unref (m_layout);
1913
1914 m_layout = pango_layout_new( m_context );
1915 }
1916 }
1917
1918 pango_layout_set_font_description( m_layout, m_fontdesc );
1919 }
1920 }
1921
1922 void wxWindowDC::SetPen( const wxPen &pen )
1923 {
1924 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1925
1926 if (m_pen == pen) return;
1927
1928 m_pen = pen;
1929
1930 if (!m_pen.Ok()) return;
1931
1932 if (!m_window) return;
1933
1934 gint width = m_pen.GetWidth();
1935 if (width <= 0)
1936 {
1937 // CMB: if width is non-zero scale it with the dc
1938 width = 1;
1939 }
1940 else
1941 {
1942 // X doesn't allow different width in x and y and so we take
1943 // the average
1944 double w = 0.5 +
1945 ( fabs((double) XLOG2DEVREL(width)) +
1946 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1947 width = (int)w;
1948 if ( !width )
1949 {
1950 // width can't be 0 or an internal GTK error occurs inside
1951 // gdk_gc_set_dashes() below
1952 width = 1;
1953 }
1954 }
1955
1956 static const wxGTKDash dotted[] = {1, 1};
1957 static const wxGTKDash short_dashed[] = {2, 2};
1958 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1959 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1960
1961 // We express dash pattern in pen width unit, so we are
1962 // independent of zoom factor and so on...
1963 int req_nb_dash;
1964 const wxGTKDash *req_dash;
1965
1966 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1967 switch (m_pen.GetStyle())
1968 {
1969 case wxUSER_DASH:
1970 {
1971 lineStyle = GDK_LINE_ON_OFF_DASH;
1972 req_nb_dash = m_pen.GetDashCount();
1973 req_dash = (wxGTKDash*)m_pen.GetDash();
1974 break;
1975 }
1976 case wxDOT:
1977 {
1978 lineStyle = GDK_LINE_ON_OFF_DASH;
1979 req_nb_dash = 2;
1980 req_dash = dotted;
1981 break;
1982 }
1983 case wxLONG_DASH:
1984 {
1985 lineStyle = GDK_LINE_ON_OFF_DASH;
1986 req_nb_dash = 2;
1987 req_dash = wxCoord_dashed;
1988 break;
1989 }
1990 case wxSHORT_DASH:
1991 {
1992 lineStyle = GDK_LINE_ON_OFF_DASH;
1993 req_nb_dash = 2;
1994 req_dash = short_dashed;
1995 break;
1996 }
1997 case wxDOT_DASH:
1998 {
1999 // lineStyle = GDK_LINE_DOUBLE_DASH;
2000 lineStyle = GDK_LINE_ON_OFF_DASH;
2001 req_nb_dash = 4;
2002 req_dash = dotted_dashed;
2003 break;
2004 }
2005
2006 case wxTRANSPARENT:
2007 case wxSTIPPLE_MASK_OPAQUE:
2008 case wxSTIPPLE:
2009 case wxSOLID:
2010 default:
2011 {
2012 lineStyle = GDK_LINE_SOLID;
2013 req_dash = (wxGTKDash*)NULL;
2014 req_nb_dash = 0;
2015 break;
2016 }
2017 }
2018
2019 if (req_dash && req_nb_dash)
2020 {
2021 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
2022 if (real_req_dash)
2023 {
2024 for (int i = 0; i < req_nb_dash; i++)
2025 real_req_dash[i] = req_dash[i] * width;
2026 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
2027 delete[] real_req_dash;
2028 }
2029 else
2030 {
2031 // No Memory. We use non-scaled dash pattern...
2032 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
2033 }
2034 }
2035
2036 GdkCapStyle capStyle = GDK_CAP_ROUND;
2037 switch (m_pen.GetCap())
2038 {
2039 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
2040 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
2041 case wxCAP_ROUND:
2042 default:
2043 {
2044 if (width <= 1)
2045 {
2046 width = 0;
2047 capStyle = GDK_CAP_NOT_LAST;
2048 }
2049 else
2050 {
2051 capStyle = GDK_CAP_ROUND;
2052 }
2053 break;
2054 }
2055 }
2056
2057 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
2058 switch (m_pen.GetJoin())
2059 {
2060 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2061 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2062 case wxJOIN_ROUND:
2063 default: { joinStyle = GDK_JOIN_ROUND; break; }
2064 }
2065
2066 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2067
2068 m_pen.GetColour().CalcPixel( m_cmap );
2069 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2070 }
2071
2072 void wxWindowDC::SetBrush( const wxBrush &brush )
2073 {
2074 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2075
2076 if (m_brush == brush) return;
2077
2078 m_brush = brush;
2079
2080 if (!m_brush.Ok()) return;
2081
2082 if (!m_window) return;
2083
2084 m_brush.GetColour().CalcPixel( m_cmap );
2085 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2086
2087 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2088
2089 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2090 {
2091 if (m_brush.GetStipple()->GetDepth() != 1)
2092 {
2093 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2094 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2095 }
2096 else
2097 {
2098 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2099 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2100 }
2101 }
2102
2103 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2104 {
2105 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2106 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2107 }
2108
2109 if (m_brush.IsHatch())
2110 {
2111 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2112 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2113 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2114 }
2115 }
2116
2117 void wxWindowDC::SetBackground( const wxBrush &brush )
2118 {
2119 /* CMB 21/7/98: Added SetBackground. Sets background brush
2120 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2121
2122 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2123
2124 if (m_backgroundBrush == brush) return;
2125
2126 m_backgroundBrush = brush;
2127
2128 if (!m_backgroundBrush.Ok()) return;
2129
2130 if (!m_window) return;
2131
2132 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2133 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2134 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2135 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2136 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2137
2138 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2139
2140 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2141 {
2142 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2143 {
2144 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2145 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2146 }
2147 else
2148 {
2149 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2150 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2151 }
2152 }
2153
2154 if (m_backgroundBrush.IsHatch())
2155 {
2156 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2157 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2158 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2159 }
2160 }
2161
2162 void wxWindowDC::SetLogicalFunction( int function )
2163 {
2164 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2165
2166 if (m_logicalFunction == function)
2167 return;
2168
2169 // VZ: shouldn't this be a CHECK?
2170 if (!m_window)
2171 return;
2172
2173 GdkFunction mode;
2174 switch (function)
2175 {
2176 case wxXOR: mode = GDK_XOR; break;
2177 case wxINVERT: mode = GDK_INVERT; break;
2178 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2179 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2180 case wxCLEAR: mode = GDK_CLEAR; break;
2181 case wxSET: mode = GDK_SET; break;
2182 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2183 case wxAND: mode = GDK_AND; break;
2184 case wxOR: mode = GDK_OR; break;
2185 case wxEQUIV: mode = GDK_EQUIV; break;
2186 case wxNAND: mode = GDK_NAND; break;
2187 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2188 case wxCOPY: mode = GDK_COPY; break;
2189 case wxNO_OP: mode = GDK_NOOP; break;
2190 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2191
2192 // unsupported by GTK
2193 case wxNOR: mode = GDK_COPY; break;
2194 default:
2195 wxFAIL_MSG( wxT("unsupported logical function") );
2196 mode = GDK_COPY;
2197 }
2198
2199 m_logicalFunction = function;
2200
2201 gdk_gc_set_function( m_penGC, mode );
2202 gdk_gc_set_function( m_brushGC, mode );
2203
2204 // to stay compatible with wxMSW, we don't apply ROPs to the text
2205 // operations (i.e. DrawText/DrawRotatedText).
2206 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2207 gdk_gc_set_function( m_textGC, mode );
2208 }
2209
2210 void wxWindowDC::SetTextForeground( const wxColour &col )
2211 {
2212 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2213
2214 // don't set m_textForegroundColour to an invalid colour as we'd crash
2215 // later then (we use m_textForegroundColour.GetColor() without checking
2216 // in a few places)
2217 if ( !col.Ok() || (m_textForegroundColour == col) )
2218 return;
2219
2220 m_textForegroundColour = col;
2221
2222 if ( m_window )
2223 {
2224 m_textForegroundColour.CalcPixel( m_cmap );
2225 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2226 }
2227 }
2228
2229 void wxWindowDC::SetTextBackground( const wxColour &col )
2230 {
2231 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2232
2233 // same as above
2234 if ( !col.Ok() || (m_textBackgroundColour == col) )
2235 return;
2236
2237 m_textBackgroundColour = col;
2238
2239 if ( m_window )
2240 {
2241 m_textBackgroundColour.CalcPixel( m_cmap );
2242 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2243 }
2244 }
2245
2246 void wxWindowDC::SetBackgroundMode( int mode )
2247 {
2248 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2249
2250 m_backgroundMode = mode;
2251
2252 if (!m_window) return;
2253
2254 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2255 // transparent/solid background mode
2256
2257 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2258 {
2259 gdk_gc_set_fill( m_brushGC,
2260 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2261 }
2262 }
2263
2264 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2265 {
2266 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2267 }
2268
2269 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2270 {
2271 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2272
2273 if (!m_window) return;
2274
2275 wxRect rect;
2276 rect.x = XLOG2DEV(x);
2277 rect.y = YLOG2DEV(y);
2278 rect.width = XLOG2DEVREL(width);
2279 rect.height = YLOG2DEVREL(height);
2280
2281 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2282 {
2283 rect.x -= rect.width;
2284 }
2285
2286 if (!m_currentClippingRegion.IsNull())
2287 m_currentClippingRegion.Intersect( rect );
2288 else
2289 m_currentClippingRegion.Union( rect );
2290
2291 #if USE_PAINT_REGION
2292 if (!m_paintClippingRegion.IsNull())
2293 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2294 #endif
2295
2296 wxCoord xx, yy, ww, hh;
2297 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2298 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2299
2300 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2301 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2302 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2303 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2304 }
2305
2306 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2307 {
2308 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2309
2310 if (region.Empty())
2311 {
2312 DestroyClippingRegion();
2313 return;
2314 }
2315
2316 if (!m_window) return;
2317
2318 if (!m_currentClippingRegion.IsNull())
2319 m_currentClippingRegion.Intersect( region );
2320 else
2321 m_currentClippingRegion.Union( region );
2322
2323 #if USE_PAINT_REGION
2324 if (!m_paintClippingRegion.IsNull())
2325 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2326 #endif
2327
2328 wxCoord xx, yy, ww, hh;
2329 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2330 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2331
2332 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2333 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2334 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2335 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2336 }
2337
2338 void wxWindowDC::DestroyClippingRegion()
2339 {
2340 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2341
2342 wxDC::DestroyClippingRegion();
2343
2344 m_currentClippingRegion.Clear();
2345
2346 #if USE_PAINT_REGION
2347 if (!m_paintClippingRegion.IsEmpty())
2348 m_currentClippingRegion.Union( m_paintClippingRegion );
2349 #endif
2350
2351 if (!m_window) return;
2352
2353 if (m_currentClippingRegion.IsEmpty())
2354 {
2355 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2356 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2357 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2358 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2359 }
2360 else
2361 {
2362 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2363 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2364 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2365 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2366 }
2367 }
2368
2369 void wxWindowDC::Destroy()
2370 {
2371 if (m_penGC) wxFreePoolGC( m_penGC );
2372 m_penGC = (GdkGC*) NULL;
2373 if (m_brushGC) wxFreePoolGC( m_brushGC );
2374 m_brushGC = (GdkGC*) NULL;
2375 if (m_textGC) wxFreePoolGC( m_textGC );
2376 m_textGC = (GdkGC*) NULL;
2377 if (m_bgGC) wxFreePoolGC( m_bgGC );
2378 m_bgGC = (GdkGC*) NULL;
2379 }
2380
2381 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2382 {
2383 m_deviceOriginX = x;
2384 m_deviceOriginY = y;
2385
2386 ComputeScaleAndOrigin();
2387 }
2388
2389 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2390 {
2391 m_signX = (xLeftRight ? 1 : -1);
2392 m_signY = (yBottomUp ? -1 : 1);
2393
2394 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2395 m_signX = -m_signX;
2396
2397 ComputeScaleAndOrigin();
2398 }
2399
2400 void wxWindowDC::ComputeScaleAndOrigin()
2401 {
2402 const wxRealPoint origScale(m_scaleX, m_scaleY);
2403
2404 wxDC::ComputeScaleAndOrigin();
2405
2406 // if scale has changed call SetPen to recalulate the line width
2407 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2408 {
2409 // this is a bit artificial, but we need to force wxDC to think the pen
2410 // has changed
2411 wxPen pen = m_pen;
2412 m_pen = wxNullPen;
2413 SetPen( pen );
2414 }
2415 }
2416
2417 // Resolution in pixels per logical inch
2418 wxSize wxWindowDC::GetPPI() const
2419 {
2420 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2421 }
2422
2423 int wxWindowDC::GetDepth() const
2424 {
2425 return gdk_drawable_get_depth(m_window);
2426 }
2427
2428
2429 //-----------------------------------------------------------------------------
2430 // wxPaintDC
2431 //-----------------------------------------------------------------------------
2432
2433 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2434
2435 // Limit the paint region to the window size. Sometimes
2436 // the paint region is too big, and this risks X11 errors
2437 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2438 {
2439 wxRect originalRect = region.GetBox();
2440 wxRect rect(originalRect);
2441 if (rect.width + rect.x > sz.x)
2442 rect.width = sz.x - rect.x;
2443 if (rect.height + rect.y > sz.y)
2444 rect.height = sz.y - rect.y;
2445 if (rect != originalRect)
2446 {
2447 region = wxRegion(rect);
2448 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2449 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2450 rect.x, rect.y, rect.width, rect.height);
2451 }
2452 }
2453
2454 wxPaintDC::wxPaintDC( wxWindow *win )
2455 : wxClientDC( win )
2456 {
2457 #if USE_PAINT_REGION
2458 if (!win->m_clipPaintRegion)
2459 return;
2460
2461 wxSize sz = win->GetSize();
2462 m_paintClippingRegion = win->m_nativeUpdateRegion;
2463 wxLimitRegionToSize(m_paintClippingRegion, sz);
2464
2465 GdkRegion *region = m_paintClippingRegion.GetRegion();
2466 if ( region )
2467 {
2468 m_currentClippingRegion.Union( m_paintClippingRegion );
2469 wxLimitRegionToSize(m_currentClippingRegion, sz);
2470
2471 if (sz.x <= 0 || sz.y <= 0)
2472 return ;
2473
2474 gdk_gc_set_clip_region( m_penGC, region );
2475 gdk_gc_set_clip_region( m_brushGC, region );
2476 gdk_gc_set_clip_region( m_textGC, region );
2477 gdk_gc_set_clip_region( m_bgGC, region );
2478 }
2479 #endif // USE_PAINT_REGION
2480 }
2481
2482 //-----------------------------------------------------------------------------
2483 // wxClientDC
2484 //-----------------------------------------------------------------------------
2485
2486 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2487
2488 wxClientDC::wxClientDC( wxWindow *win )
2489 : wxWindowDC( win )
2490 {
2491 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2492
2493 #ifdef __WXUNIVERSAL__
2494 wxPoint ptOrigin = win->GetClientAreaOrigin();
2495 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2496 wxSize size = win->GetClientSize();
2497 SetClippingRegion(wxPoint(0, 0), size);
2498 #endif // __WXUNIVERSAL__
2499 }
2500
2501 void wxClientDC::DoGetSize(int *width, int *height) const
2502 {
2503 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2504
2505 m_owner->GetClientSize( width, height );
2506 }
2507
2508 // ----------------------------------------------------------------------------
2509 // wxDCModule
2510 // ----------------------------------------------------------------------------
2511
2512 class wxDCModule : public wxModule
2513 {
2514 public:
2515 bool OnInit();
2516 void OnExit();
2517
2518 private:
2519 DECLARE_DYNAMIC_CLASS(wxDCModule)
2520 };
2521
2522 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2523
2524 bool wxDCModule::OnInit()
2525 {
2526 wxInitGCPool();
2527 return true;
2528 }
2529
2530 void wxDCModule::OnExit()
2531 {
2532 wxCleanUpGCPool();
2533 }
wxWidgets (Impactor)