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Patches-1851591 ] dataview sample is crashing (under MSW)
[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/dc.h"
18 #include "wx/dcclient.h"
19
20 #ifndef WX_PRECOMP
21 #include "wx/window.h"
22 #include "wx/log.h"
23 #include "wx/dcmemory.h"
24 #include "wx/math.h" // for floating-point functions
25 #include "wx/image.h"
26 #include "wx/module.h"
27 #endif
28
29 #include "wx/fontutil.h"
30 #include "wx/scrolwin.h"
31
32 #include "wx/gtk/private.h"
33
34 #include <gdk/gdkx.h>
35
36 //-----------------------------------------------------------------------------
37 // local defines
38 //-----------------------------------------------------------------------------
39
40 #define XLOG2DEV(x) LogicalToDeviceX(x)
41 #define XLOG2DEVREL(x) LogicalToDeviceXRel(x)
42 #define YLOG2DEV(y) LogicalToDeviceY(y)
43 #define YLOG2DEVREL(y) LogicalToDeviceYRel(y)
44
45 #define USE_PAINT_REGION 1
46
47 //-----------------------------------------------------------------------------
48 // local data
49 //-----------------------------------------------------------------------------
50
51 #include "bdiag.xbm"
52 #include "fdiag.xbm"
53 #include "cdiag.xbm"
54 #include "horiz.xbm"
55 #include "verti.xbm"
56 #include "cross.xbm"
57 #define num_hatches 6
58
59 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
60 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
61
62
63 static GdkPixmap *hatches[num_hatches];
64 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
65
66 extern GtkWidget *wxGetRootWindow();
67
68 //-----------------------------------------------------------------------------
69 // constants
70 //-----------------------------------------------------------------------------
71
72 const double RAD2DEG = 180.0 / M_PI;
73
74 // ----------------------------------------------------------------------------
75 // private functions
76 // ----------------------------------------------------------------------------
77
78 static inline double dmax(double a, double b) { return a > b ? a : b; }
79 static inline double dmin(double a, double b) { return a < b ? a : b; }
80
81 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
82
83 //-----------------------------------------------------------------------------
84 // temporary implementation of the missing GDK function
85 //-----------------------------------------------------------------------------
86
87 #include "gdk/gdkprivate.h"
88
89 static
90 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
91 GdkGC *gc,
92 GdkDrawable *src,
93 gint xsrc,
94 gint ysrc)
95 {
96 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
98 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
99
100 gint src_width, src_height;
101 gdk_drawable_get_size(src, &src_width, &src_height);
102
103 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
104 GDK_WINDOW_XID(src),
105 GDK_WINDOW_XID(drawable),
106 GDK_GC_XGC(gc),
107 xsrc, ysrc,
108 src_width, src_height,
109 0, 0,
110 1 );
111 }
112
113 //-----------------------------------------------------------------------------
114 // Implement Pool of Graphic contexts. Creating them takes too much time.
115 //-----------------------------------------------------------------------------
116
117 enum wxPoolGCType
118 {
119 wxGC_ERROR = 0,
120 wxTEXT_MONO,
121 wxBG_MONO,
122 wxPEN_MONO,
123 wxBRUSH_MONO,
124 wxTEXT_COLOUR,
125 wxBG_COLOUR,
126 wxPEN_COLOUR,
127 wxBRUSH_COLOUR,
128 wxTEXT_SCREEN,
129 wxBG_SCREEN,
130 wxPEN_SCREEN,
131 wxBRUSH_SCREEN
132 };
133
134 struct wxGC
135 {
136 GdkGC *m_gc;
137 wxPoolGCType m_type;
138 bool m_used;
139 };
140
141 #define GC_POOL_ALLOC_SIZE 100
142
143 static int wxGCPoolSize = 0;
144
145 static wxGC *wxGCPool = NULL;
146
147 static void wxInitGCPool()
148 {
149 // This really could wait until the first call to
150 // wxGetPoolGC, but we will make the first allocation
151 // now when other initialization is being performed.
152
153 // Set initial pool size.
154 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
155
156 // Allocate initial pool.
157 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
158 if (wxGCPool == NULL)
159 {
160 // If we cannot malloc, then fail with error
161 // when debug is enabled. If debug is not enabled,
162 // the problem will eventually get caught
163 // in wxGetPoolGC.
164 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
165 return;
166 }
167
168 // Zero initial pool.
169 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
170 }
171
172 static void wxCleanUpGCPool()
173 {
174 for (int i = 0; i < wxGCPoolSize; i++)
175 {
176 if (wxGCPool[i].m_gc)
177 g_object_unref (wxGCPool[i].m_gc);
178 }
179
180 free(wxGCPool);
181 wxGCPool = NULL;
182 wxGCPoolSize = 0;
183 }
184
185 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
186 {
187 wxGC *pptr;
188
189 // Look for an available GC.
190 for (int i = 0; i < wxGCPoolSize; i++)
191 {
192 if (!wxGCPool[i].m_gc)
193 {
194 wxGCPool[i].m_gc = gdk_gc_new( window );
195 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
196 wxGCPool[i].m_type = type;
197 wxGCPool[i].m_used = false;
198 }
199 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
200 {
201 wxGCPool[i].m_used = true;
202 return wxGCPool[i].m_gc;
203 }
204 }
205
206 // We did not find an available GC.
207 // We need to grow the GC pool.
208 pptr = (wxGC *)realloc(wxGCPool,
209 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
210 if (pptr != NULL)
211 {
212 // Initialize newly allocated pool.
213 wxGCPool = pptr;
214 memset(&wxGCPool[wxGCPoolSize], 0,
215 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
216
217 // Initialize entry we will return.
218 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
219 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
220 wxGCPool[wxGCPoolSize].m_type = type;
221 wxGCPool[wxGCPoolSize].m_used = true;
222
223 // Set new value of pool size.
224 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
225
226 // Return newly allocated entry.
227 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
228 }
229
230 // The realloc failed. Fall through to error.
231 wxFAIL_MSG( wxT("No GC available") );
232
233 return (GdkGC*) NULL;
234 }
235
236 static void wxFreePoolGC( GdkGC *gc )
237 {
238 for (int i = 0; i < wxGCPoolSize; i++)
239 {
240 if (wxGCPool[i].m_gc == gc)
241 {
242 wxGCPool[i].m_used = false;
243 return;
244 }
245 }
246
247 wxFAIL_MSG( wxT("Wrong GC") );
248 }
249
250 //-----------------------------------------------------------------------------
251 // wxWindowDC
252 //-----------------------------------------------------------------------------
253
254 IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxGTKDCImpl)
255
256 wxWindowDCImpl::wxWindowDCImpl( wxDC *owner ) :
257 wxGTKDCImpl( owner )
258 {
259 m_gdkwindow = (GdkWindow*) NULL;
260 m_penGC = (GdkGC *) NULL;
261 m_brushGC = (GdkGC *) NULL;
262 m_textGC = (GdkGC *) NULL;
263 m_bgGC = (GdkGC *) NULL;
264 m_cmap = (GdkColormap *) NULL;
265 m_isScreenDC = false;
266 m_context = (PangoContext *)NULL;
267 m_layout = (PangoLayout *)NULL;
268 m_fontdesc = (PangoFontDescription *)NULL;
269 }
270
271 wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
272 wxGTKDCImpl( owner )
273 {
274 wxASSERT_MSG( window, wxT("DC needs a window") );
275
276 m_gdkwindow = (GdkWindow*) NULL;
277 m_penGC = (GdkGC *) NULL;
278 m_brushGC = (GdkGC *) NULL;
279 m_textGC = (GdkGC *) NULL;
280 m_bgGC = (GdkGC *) NULL;
281 m_cmap = (GdkColormap *) NULL;
282 m_isScreenDC = false;
283 m_font = window->GetFont();
284
285 GtkWidget *widget = window->m_wxwindow;
286
287 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
288 // code should still be able to create wxClientDCs for them, so we will
289 // use the parent window here then.
290 if ( !widget )
291 {
292 window = window->GetParent();
293 widget = window->m_wxwindow;
294 }
295
296 wxASSERT_MSG( widget, wxT("DC needs a widget") );
297
298 m_context = window->GtkGetPangoDefaultContext();
299 m_layout = pango_layout_new( m_context );
300 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
301
302 m_gdkwindow = widget->window;
303
304 // Window not realized ?
305 if (!m_gdkwindow)
306 {
307 // Don't report problems as per MSW.
308 m_ok = true;
309
310 return;
311 }
312
313 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
314
315 SetUpDC();
316
317 /* this must be done after SetUpDC, bacause SetUpDC calls the
318 repective SetBrush, SetPen, SetBackground etc functions
319 to set up the DC. SetBackground call m_owner->SetBackground
320 and this might not be desired as the standard dc background
321 is white whereas a window might assume gray to be the
322 standard (as e.g. wxStatusBar) */
323
324 m_window = window;
325
326 if (m_window && m_window->m_wxwindow &&
327 (m_window->GetLayoutDirection() == wxLayout_RightToLeft))
328 {
329 // reverse sense
330 m_signX = -1;
331
332 // origin in the upper right corner
333 m_deviceOriginX = m_window->GetClientSize().x;
334 }
335 }
336
337 wxWindowDCImpl::~wxWindowDCImpl()
338 {
339 Destroy();
340
341 if (m_layout)
342 g_object_unref (m_layout);
343 if (m_fontdesc)
344 pango_font_description_free( m_fontdesc );
345 }
346
347 void wxWindowDCImpl::SetUpDC( bool isMemDC )
348 {
349 m_ok = true;
350
351 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
352
353 bool done = false;
354
355 if ((isMemDC) && (GetSelectedBitmap().IsOk()))
356 {
357 if (GetSelectedBitmap().GetDepth() == 1)
358 {
359 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_MONO );
360 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_MONO );
361 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_MONO );
362 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_MONO );
363 done = true;
364 }
365 }
366
367 if (!done)
368 {
369 if (m_isScreenDC)
370 {
371 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_SCREEN );
372 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_SCREEN );
373 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_SCREEN );
374 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_SCREEN );
375 }
376 else
377 {
378 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR );
379 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_COLOUR );
380 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_COLOUR );
381 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_COLOUR );
382 }
383 }
384
385 /* background colour */
386 m_backgroundBrush = *wxWHITE_BRUSH;
387 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
388 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
389
390 /* m_textGC */
391 m_textForegroundColour.CalcPixel( m_cmap );
392 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
393
394 m_textBackgroundColour.CalcPixel( m_cmap );
395 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
396
397 gdk_gc_set_fill( m_textGC, GDK_SOLID );
398
399 gdk_gc_set_colormap( m_textGC, m_cmap );
400
401 /* m_penGC */
402 m_pen.GetColour().CalcPixel( m_cmap );
403 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
404 gdk_gc_set_background( m_penGC, bg_col );
405
406 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
407
408 /* m_brushGC */
409 m_brush.GetColour().CalcPixel( m_cmap );
410 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
411 gdk_gc_set_background( m_brushGC, bg_col );
412
413 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
414
415 /* m_bgGC */
416 gdk_gc_set_background( m_bgGC, bg_col );
417 gdk_gc_set_foreground( m_bgGC, bg_col );
418
419 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
420
421 /* ROPs */
422 gdk_gc_set_function( m_textGC, GDK_COPY );
423 gdk_gc_set_function( m_brushGC, GDK_COPY );
424 gdk_gc_set_function( m_penGC, GDK_COPY );
425
426 /* clipping */
427 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
428 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
429 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
430 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
431
432 if (!hatch_bitmap)
433 {
434 hatch_bitmap = hatches;
435 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
436 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
437 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
438 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
439 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
440 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
441 }
442 }
443
444 void wxWindowDCImpl::DoGetSize( int* width, int* height ) const
445 {
446 wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
447
448 m_window->GetSize(width, height);
449 }
450
451 bool wxWindowDCImpl::DoFloodFill(wxCoord x, wxCoord y,
452 const wxColour& col, int style)
453 {
454 #if wxUSE_IMAGE
455 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
456 const wxColour & col, int style);
457
458 return wxDoFloodFill( GetOwner(), x, y, col, style);
459 #else
460 wxUnusedVar(x);
461 wxUnusedVar(y);
462 wxUnusedVar(col);
463 wxUnusedVar(style);
464
465 return false;
466 #endif
467 }
468
469 bool wxWindowDCImpl::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
470 {
471 #if wxUSE_IMAGE
472 // Generic (and therefore rather inefficient) method.
473 // Could be improved.
474 wxMemoryDC memdc;
475 wxBitmap bitmap(1, 1);
476 memdc.SelectObject(bitmap);
477 memdc.Blit(0, 0, 1, 1, GetOwner(), x1, y1);
478 memdc.SelectObject(wxNullBitmap);
479
480 wxImage image = bitmap.ConvertToImage();
481 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
482 return true;
483 #else // !wxUSE_IMAGE
484 wxUnusedVar(x1);
485 wxUnusedVar(y1);
486 wxUnusedVar(col);
487
488 return false;
489 #endif // wxUSE_IMAGE/!wxUSE_IMAGE
490 }
491
492 void wxWindowDCImpl::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
493 {
494 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
495
496 if (m_pen.GetStyle() != wxTRANSPARENT)
497 {
498 if (m_gdkwindow)
499 gdk_draw_line( m_gdkwindow, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
500
501 CalcBoundingBox(x1, y1);
502 CalcBoundingBox(x2, y2);
503 }
504 }
505
506 void wxWindowDCImpl::DoCrossHair( wxCoord x, wxCoord y )
507 {
508 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
509
510 if (m_pen.GetStyle() != wxTRANSPARENT)
511 {
512 int w = 0;
513 int h = 0;
514 GetOwner()->GetSize( &w, &h );
515 wxCoord xx = XLOG2DEV(x);
516 wxCoord yy = YLOG2DEV(y);
517 if (m_gdkwindow)
518 {
519 gdk_draw_line( m_gdkwindow, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
520 gdk_draw_line( m_gdkwindow, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
521 }
522 }
523 }
524
525 void wxWindowDCImpl::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
526 wxCoord xc, wxCoord yc )
527 {
528 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
529
530 wxCoord xx1 = XLOG2DEV(x1);
531 wxCoord yy1 = YLOG2DEV(y1);
532 wxCoord xx2 = XLOG2DEV(x2);
533 wxCoord yy2 = YLOG2DEV(y2);
534 wxCoord xxc = XLOG2DEV(xc);
535 wxCoord yyc = YLOG2DEV(yc);
536 double dx = xx1 - xxc;
537 double dy = yy1 - yyc;
538 double radius = sqrt((double)(dx*dx+dy*dy));
539 wxCoord r = (wxCoord)radius;
540 double radius1, radius2;
541
542 if (xx1 == xx2 && yy1 == yy2)
543 {
544 radius1 = 0.0;
545 radius2 = 360.0;
546 }
547 else if ( wxIsNullDouble(radius) )
548 {
549 radius1 =
550 radius2 = 0.0;
551 }
552 else
553 {
554 radius1 = (xx1 - xxc == 0) ?
555 (yy1 - yyc < 0) ? 90.0 : -90.0 :
556 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
557 radius2 = (xx2 - xxc == 0) ?
558 (yy2 - yyc < 0) ? 90.0 : -90.0 :
559 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
560 }
561 wxCoord alpha1 = wxCoord(radius1 * 64.0);
562 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
563 while (alpha2 <= 0) alpha2 += 360*64;
564 while (alpha1 > 360*64) alpha1 -= 360*64;
565
566 if (m_gdkwindow)
567 {
568 if (m_brush.GetStyle() != wxTRANSPARENT)
569 {
570 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
571 {
572 gdk_gc_set_ts_origin( m_textGC,
573 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
574 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
575 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
576 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
577 } else
578 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
579 {
580 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
581 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
582 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
583 } else
584 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
585 {
586 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
587 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
588 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
589 } else
590 if (m_brush.GetStyle() == wxSTIPPLE)
591 {
592 gdk_gc_set_ts_origin( m_brushGC,
593 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
594 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
595 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
596 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
597 }
598 else
599 {
600 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
601 }
602 }
603
604 if (m_pen.GetStyle() != wxTRANSPARENT)
605 {
606 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
607
608 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
609 {
610 gdk_draw_line( m_gdkwindow, m_penGC, xx1, yy1, xxc, yyc );
611 gdk_draw_line( m_gdkwindow, m_penGC, xxc, yyc, xx2, yy2 );
612 }
613 }
614 }
615
616 CalcBoundingBox (x1, y1);
617 CalcBoundingBox (x2, y2);
618 }
619
620 void wxWindowDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
621 {
622 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
623
624 wxCoord xx = XLOG2DEV(x);
625 wxCoord yy = YLOG2DEV(y);
626 wxCoord ww = m_signX * XLOG2DEVREL(width);
627 wxCoord hh = m_signY * YLOG2DEVREL(height);
628
629 // CMB: handle -ve width and/or height
630 if (ww < 0) { ww = -ww; xx = xx - ww; }
631 if (hh < 0) { hh = -hh; yy = yy - hh; }
632
633 if (m_gdkwindow)
634 {
635 wxCoord start = wxCoord(sa * 64.0);
636 wxCoord end = wxCoord((ea-sa) * 64.0);
637
638 if (m_brush.GetStyle() != wxTRANSPARENT)
639 {
640 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
641 {
642 gdk_gc_set_ts_origin( m_textGC,
643 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
644 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
645 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xx, yy, ww, hh, start, end );
646 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
647 } else
648 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
649 {
650 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
651 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
652 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
653 } else
654 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
655 {
656 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
657 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
658 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
659 } else
660 if (m_brush.GetStyle() == wxSTIPPLE)
661 {
662 gdk_gc_set_ts_origin( m_brushGC,
663 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
664 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
665 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
666 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
667 }
668 else
669 {
670 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
671 }
672 }
673
674 if (m_pen.GetStyle() != wxTRANSPARENT)
675 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, ww, hh, start, end );
676 }
677
678 CalcBoundingBox (x, y);
679 CalcBoundingBox (x + width, y + height);
680 }
681
682 void wxWindowDCImpl::DoDrawPoint( wxCoord x, wxCoord y )
683 {
684 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
685
686 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_gdkwindow)
687 gdk_draw_point( m_gdkwindow, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
688
689 CalcBoundingBox (x, y);
690 }
691
692 void wxWindowDCImpl::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
693 {
694 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
695
696 if (m_pen.GetStyle() == wxTRANSPARENT) return;
697 if (n <= 0) return;
698
699 //Check, if scaling is necessary
700 const bool doScale =
701 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
702
703 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
704 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
705
706 if (doScale)
707 gpts = new GdkPoint[n];
708
709 for (int i = 0; i < n; i++)
710 {
711 if (doScale)
712 {
713 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
714 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
715 }
716 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
717 }
718
719 if (m_gdkwindow)
720 gdk_draw_lines( m_gdkwindow, m_penGC, gpts, n);
721
722 if (doScale)
723 delete[] gpts;
724 }
725
726 void wxWindowDCImpl::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
727 {
728 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
729
730 if (n <= 0) return;
731
732 //Check, if scaling is necessary
733 const bool doScale =
734 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
735
736 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
737 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
738
739 if (doScale)
740 gdkpoints = new GdkPoint[n];
741
742 int i;
743 for (i = 0 ; i < n ; i++)
744 {
745 if (doScale)
746 {
747 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
748 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
749 }
750 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
751 }
752
753 if (m_gdkwindow)
754 {
755 if (m_brush.GetStyle() != wxTRANSPARENT)
756 {
757 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
758 {
759 gdk_gc_set_ts_origin( m_textGC,
760 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
761 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
762 gdk_draw_polygon( m_gdkwindow, m_textGC, TRUE, gdkpoints, n );
763 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
764 } else
765 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
766 {
767 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
768 gdk_draw_polygon( m_gdkwindow, m_brushGC, TRUE, gdkpoints, n );
769 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
770 } else
771 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
772 {
773 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
774 gdk_draw_polygon( m_gdkwindow, m_brushGC, TRUE, gdkpoints, n );
775 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
776 } else
777 if (m_brush.GetStyle() == wxSTIPPLE)
778 {
779 gdk_gc_set_ts_origin( m_brushGC,
780 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
781 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
782 gdk_draw_polygon( m_gdkwindow, m_brushGC, TRUE, gdkpoints, n );
783 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
784 }
785 else
786 {
787 gdk_draw_polygon( m_gdkwindow, m_brushGC, TRUE, gdkpoints, n );
788 }
789 }
790
791 if (m_pen.GetStyle() != wxTRANSPARENT)
792 {
793 /*
794 for (i = 0 ; i < n ; i++)
795 {
796 gdk_draw_line( m_gdkwindow, m_penGC,
797 gdkpoints[i%n].x,
798 gdkpoints[i%n].y,
799 gdkpoints[(i+1)%n].x,
800 gdkpoints[(i+1)%n].y);
801 }
802 */
803 gdk_draw_polygon( m_gdkwindow, m_penGC, FALSE, gdkpoints, n );
804
805 }
806 }
807
808 if (doScale)
809 delete[] gdkpoints;
810 }
811
812 void wxWindowDCImpl::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
813 {
814 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
815
816 wxCoord xx = XLOG2DEV(x);
817 wxCoord yy = YLOG2DEV(y);
818 wxCoord ww = m_signX * XLOG2DEVREL(width);
819 wxCoord hh = m_signY * YLOG2DEVREL(height);
820
821 // CMB: draw nothing if transformed w or h is 0
822 if (ww == 0 || hh == 0) return;
823
824 // CMB: handle -ve width and/or height
825 if (ww < 0) { ww = -ww; xx = xx - ww; }
826 if (hh < 0) { hh = -hh; yy = yy - hh; }
827
828 if (m_gdkwindow)
829 {
830 if (m_brush.GetStyle() != wxTRANSPARENT)
831 {
832 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
833 {
834 gdk_gc_set_ts_origin( m_textGC,
835 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
836 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
837 gdk_draw_rectangle( m_gdkwindow, m_textGC, TRUE, xx, yy, ww, hh );
838 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
839 } else
840 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
841 {
842 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
843 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh );
844 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
845 } else
846 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
847 {
848 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
849 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh );
850 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
851 } else
852 if (m_brush.GetStyle() == wxSTIPPLE)
853 {
854 gdk_gc_set_ts_origin( m_brushGC,
855 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
856 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
857 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh );
858 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
859 }
860 else
861 {
862 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh );
863 }
864 }
865
866 if (m_pen.GetStyle() != wxTRANSPARENT)
867 {
868 #if 1
869 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
870 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
871 {
872 // Use 2 1-line rects instead
873 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
874
875 if (m_signX == -1)
876 {
877 // Different for RTL
878 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
879 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy-1, ww, hh );
880 }
881 else
882 {
883 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
884 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx-1, yy-1, ww, hh );
885 }
886
887 // reset
888 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
889 }
890 else
891 #endif
892 {
893 // Just use X11 for other cases
894 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
895 }
896 }
897 }
898
899 CalcBoundingBox( x, y );
900 CalcBoundingBox( x + width, y + height );
901 }
902
903 void wxWindowDCImpl::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
904 {
905 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
906
907 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
908
909 wxCoord xx = XLOG2DEV(x);
910 wxCoord yy = YLOG2DEV(y);
911 wxCoord ww = m_signX * XLOG2DEVREL(width);
912 wxCoord hh = m_signY * YLOG2DEVREL(height);
913 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
914
915 // CMB: handle -ve width and/or height
916 if (ww < 0) { ww = -ww; xx = xx - ww; }
917 if (hh < 0) { hh = -hh; yy = yy - hh; }
918
919 // CMB: if radius is zero use DrawRectangle() instead to avoid
920 // X drawing errors with small radii
921 if (rr == 0)
922 {
923 DoDrawRectangle( x, y, width, height );
924 return;
925 }
926
927 // CMB: draw nothing if transformed w or h is 0
928 if (ww == 0 || hh == 0) return;
929
930 // CMB: adjust size if outline is drawn otherwise the result is
931 // 1 pixel too wide and high
932 if (m_pen.GetStyle() != wxTRANSPARENT)
933 {
934 ww--;
935 hh--;
936 }
937
938 if (m_gdkwindow)
939 {
940 // CMB: ensure dd is not larger than rectangle otherwise we
941 // get an hour glass shape
942 wxCoord dd = 2 * rr;
943 if (dd > ww) dd = ww;
944 if (dd > hh) dd = hh;
945 rr = dd / 2;
946
947 if (m_brush.GetStyle() != wxTRANSPARENT)
948 {
949 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
950 {
951 gdk_gc_set_ts_origin( m_textGC,
952 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
953 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
954 gdk_draw_rectangle( m_gdkwindow, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
955 gdk_draw_rectangle( m_gdkwindow, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
956 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
957 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
958 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
959 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
960 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
961 } else
962 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
963 {
964 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
965 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
966 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
967 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
968 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
969 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
970 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
971 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
972 } else
973 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
974 {
975 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
976 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
977 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
978 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
979 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
980 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
981 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
982 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
983 } else
984 if (m_brush.GetStyle() == wxSTIPPLE)
985 {
986 gdk_gc_set_ts_origin( m_brushGC,
987 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
988 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
989 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
990 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
991 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
992 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
993 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
994 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
995 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
996 }
997 else
998 {
999 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
1000 gdk_draw_rectangle( m_gdkwindow, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
1001 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
1002 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
1003 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
1004 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
1005 }
1006 }
1007
1008 if (m_pen.GetStyle() != wxTRANSPARENT)
1009 {
1010 gdk_draw_line( m_gdkwindow, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
1011 gdk_draw_line( m_gdkwindow, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
1012 gdk_draw_line( m_gdkwindow, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
1013 gdk_draw_line( m_gdkwindow, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
1014 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
1015 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
1016 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
1017 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
1018 }
1019 }
1020
1021 // this ignores the radius
1022 CalcBoundingBox( x, y );
1023 CalcBoundingBox( x + width, y + height );
1024 }
1025
1026 void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1027 {
1028 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1029
1030 wxCoord xx = XLOG2DEV(x);
1031 wxCoord yy = YLOG2DEV(y);
1032 wxCoord ww = m_signX * XLOG2DEVREL(width);
1033 wxCoord hh = m_signY * YLOG2DEVREL(height);
1034
1035 // CMB: handle -ve width and/or height
1036 if (ww < 0) { ww = -ww; xx = xx - ww; }
1037 if (hh < 0) { hh = -hh; yy = yy - hh; }
1038
1039 if (m_gdkwindow)
1040 {
1041 if (m_brush.GetStyle() != wxTRANSPARENT)
1042 {
1043 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1044 {
1045 gdk_gc_set_ts_origin( m_textGC,
1046 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1047 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1048 gdk_draw_arc( m_gdkwindow, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1049 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1050 } else
1051 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1052 {
1053 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1054 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1055 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1056 } else
1057 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1058 {
1059 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1060 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1061 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1062 } else
1063 if (m_brush.GetStyle() == wxSTIPPLE)
1064 {
1065 gdk_gc_set_ts_origin( m_brushGC,
1066 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1067 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1068 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1069 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1070 }
1071 else
1072 {
1073 gdk_draw_arc( m_gdkwindow, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1074 }
1075 }
1076
1077 if (m_pen.GetStyle() != wxTRANSPARENT)
1078 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1079 }
1080
1081 CalcBoundingBox( x, y );
1082 CalcBoundingBox( x + width, y + height );
1083 }
1084
1085 void wxWindowDCImpl::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1086 {
1087 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1088 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1089 }
1090
1091 void wxWindowDCImpl::DoDrawBitmap( const wxBitmap &bitmap,
1092 wxCoord x, wxCoord y,
1093 bool useMask )
1094 {
1095 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1096
1097 wxCHECK_RET( bitmap.IsOk(), wxT("invalid bitmap") );
1098
1099 bool is_mono = bitmap.GetDepth() == 1;
1100
1101 // scale/translate size and position
1102 int xx = XLOG2DEV(x);
1103 int yy = YLOG2DEV(y);
1104
1105 int w = bitmap.GetWidth();
1106 int h = bitmap.GetHeight();
1107
1108 if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
1109 xx -= w;
1110
1111 CalcBoundingBox( x, y );
1112 CalcBoundingBox( x + w, y + h );
1113
1114 if (!m_gdkwindow) return;
1115
1116 int ww = XLOG2DEVREL(w);
1117 int hh = YLOG2DEVREL(h);
1118
1119 // compare to current clipping region
1120 if (!m_currentClippingRegion.IsNull())
1121 {
1122 wxRegion tmp( xx,yy,ww,hh );
1123 tmp.Intersect( m_currentClippingRegion );
1124 if (tmp.IsEmpty())
1125 return;
1126 }
1127
1128 // scale bitmap if required
1129 wxBitmap use_bitmap = bitmap;
1130 if ((w != ww) || (h != hh))
1131 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1132
1133 // apply mask if any
1134 GdkBitmap *mask = (GdkBitmap *) NULL;
1135 if (useMask && use_bitmap.GetMask())
1136 mask = use_bitmap.GetMask()->GetBitmap();
1137
1138 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1139
1140 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1141
1142 if (mask != NULL)
1143 {
1144 if (!m_currentClippingRegion.IsNull())
1145 {
1146 GdkColor col;
1147 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1148 GdkGC *gc = gdk_gc_new( new_mask );
1149 col.pixel = 0;
1150 gdk_gc_set_foreground( gc, &col );
1151 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1152 col.pixel = 0;
1153 gdk_gc_set_background( gc, &col );
1154 col.pixel = 1;
1155 gdk_gc_set_foreground( gc, &col );
1156 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1157 gdk_gc_set_clip_origin( gc, -xx, -yy );
1158 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1159 gdk_gc_set_stipple( gc, mask );
1160 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1161 mask = new_mask;
1162 g_object_unref (gc);
1163 }
1164
1165 gdk_gc_set_clip_mask(use_gc, mask);
1166 gdk_gc_set_clip_origin(use_gc, xx, yy);
1167 }
1168
1169 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1170 // drawing a mono-bitmap (XBitmap) we use the current text GC
1171 if (is_mono)
1172 {
1173 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1174 GdkGC *gc = gdk_gc_new( bitmap2 );
1175 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1176 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1177 gdk_wx_draw_bitmap(bitmap2, gc, use_bitmap.GetPixmap(), 0, 0);
1178
1179 gdk_draw_drawable(m_gdkwindow, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1180
1181 g_object_unref (bitmap2);
1182 g_object_unref (gc);
1183 }
1184 else
1185 {
1186 if (use_bitmap.HasPixbuf())
1187 {
1188 gdk_draw_pixbuf(m_gdkwindow, use_gc,
1189 use_bitmap.GetPixbuf(),
1190 0, 0, xx, yy, -1, -1,
1191 GDK_RGB_DITHER_NORMAL, xx, yy);
1192 }
1193 else
1194 {
1195 gdk_draw_drawable(m_gdkwindow, use_gc,
1196 use_bitmap.GetPixmap(),
1197 0, 0, xx, yy, -1, -1);
1198 }
1199 }
1200
1201 // remove mask again if any
1202 if (mask != NULL)
1203 {
1204 gdk_gc_set_clip_mask(use_gc, NULL);
1205 gdk_gc_set_clip_origin(use_gc, 0, 0);
1206 if (!m_currentClippingRegion.IsNull())
1207 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1208 if (new_mask != NULL)
1209 g_object_unref(new_mask);
1210 }
1211 }
1212
1213 bool wxWindowDCImpl::DoBlit( wxCoord xdest, wxCoord ydest,
1214 wxCoord width, wxCoord height,
1215 wxDC *source,
1216 wxCoord xsrc, wxCoord ysrc,
1217 int logical_func,
1218 bool useMask,
1219 wxCoord xsrcMask, wxCoord ysrcMask )
1220 {
1221 wxCHECK_MSG( IsOk(), false, wxT("invalid window dc") );
1222
1223 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1224
1225 if (!m_gdkwindow) return false;
1226
1227 // transform the source DC coords to the device ones
1228 xsrc = source->LogicalToDeviceX(xsrc);
1229 ysrc = source->LogicalToDeviceY(ysrc);
1230
1231 wxBitmap selected;
1232 wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
1233 if ( memDC )
1234 {
1235 selected = memDC->GetSelectedBitmap();
1236 if ( !selected.IsOk() )
1237 return false;
1238 }
1239
1240 bool use_bitmap_method = false;
1241 bool is_mono = false;
1242
1243 if (xsrcMask == -1 && ysrcMask == -1)
1244 {
1245 xsrcMask = xsrc;
1246 ysrcMask = ysrc;
1247 }
1248
1249 if (selected.IsOk())
1250 {
1251 is_mono = (selected.GetDepth() == 1);
1252
1253 // we use the "XCopyArea" way to copy a memory dc into
1254 // a different window if the memory dc BOTH
1255 // a) doesn't have any mask or its mask isn't used
1256 // b) it is clipped
1257 // c) is not 1-bit
1258
1259 if (useMask && (selected.GetMask()))
1260 {
1261 // we HAVE TO use the direct way for memory dcs
1262 // that have mask since the XCopyArea doesn't know
1263 // about masks
1264 use_bitmap_method = true;
1265 }
1266 else if (is_mono)
1267 {
1268 // we HAVE TO use the direct way for memory dcs
1269 // that are bitmaps because XCopyArea doesn't cope
1270 // with different bit depths
1271 use_bitmap_method = true;
1272 }
1273 else if ((xsrc == 0) && (ysrc == 0) &&
1274 (width == selected.GetWidth()) &&
1275 (height == selected.GetHeight()))
1276 {
1277 // we SHOULD use the direct way if all of the bitmap
1278 // in the memory dc is copied in which case XCopyArea
1279 // wouldn't be able able to boost performace by reducing
1280 // the area to be scaled
1281 use_bitmap_method = true;
1282 }
1283 }
1284
1285 CalcBoundingBox( xdest, ydest );
1286 CalcBoundingBox( xdest + width, ydest + height );
1287
1288 // scale/translate size and position
1289 wxCoord xx = XLOG2DEV(xdest);
1290 wxCoord yy = YLOG2DEV(ydest);
1291
1292 wxCoord ww = XLOG2DEVREL(width);
1293 wxCoord hh = YLOG2DEVREL(height);
1294
1295 // compare to current clipping region
1296 if (!m_currentClippingRegion.IsNull())
1297 {
1298 wxRegion tmp( xx,yy,ww,hh );
1299 tmp.Intersect( m_currentClippingRegion );
1300 if (tmp.IsEmpty())
1301 return true;
1302 }
1303
1304 int old_logical_func = m_logicalFunction;
1305 SetLogicalFunction( logical_func );
1306
1307 if (use_bitmap_method)
1308 {
1309 // scale/translate bitmap size
1310 wxCoord bm_width = selected.GetWidth();
1311 wxCoord bm_height = selected.GetHeight();
1312
1313 // Get clip coords for the bitmap. If we don't
1314 // use wxBitmap::Rescale(), which can clip the
1315 // bitmap, these are the same as the original
1316 // coordinates
1317 wxCoord cx = xx;
1318 wxCoord cy = yy;
1319 wxCoord cw = ww;
1320 wxCoord ch = hh;
1321
1322 // interpret userscale of src too
1323 double xsc,ysc;
1324 memDC->GetUserScale(&xsc,&ysc);
1325 bm_width = (int) (bm_width / xsc);
1326 bm_height = (int) (bm_height / ysc);
1327
1328 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1329 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1330
1331 // Scale bitmap if required
1332 wxBitmap use_bitmap = selected;
1333 if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
1334 {
1335 // This indicates that the blitting code below will get
1336 // a clipped bitmap and therefore needs to move the origin
1337 // accordingly
1338 wxRegion tmp( xx,yy,ww,hh );
1339 if (!m_currentClippingRegion.IsNull())
1340 tmp.Intersect( m_currentClippingRegion );
1341 tmp.GetBox(cx,cy,cw,ch);
1342
1343 // Scale and clipped bitmap
1344 use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1345 }
1346
1347 // apply mask if any
1348 GdkBitmap *mask = (GdkBitmap *) NULL;
1349 if (useMask && use_bitmap.GetMask())
1350 mask = use_bitmap.GetMask()->GetBitmap();
1351
1352 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1353
1354 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1355
1356 if (mask != NULL)
1357 {
1358 if (!m_currentClippingRegion.IsNull())
1359 {
1360 GdkColor col;
1361 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1362 GdkGC *gc = gdk_gc_new( new_mask );
1363 col.pixel = 0;
1364 gdk_gc_set_foreground( gc, &col );
1365 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1366 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1367 col.pixel = 0;
1368 gdk_gc_set_background( gc, &col );
1369 col.pixel = 1;
1370 gdk_gc_set_foreground( gc, &col );
1371 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1372 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1373 gdk_gc_set_clip_origin( gc, -cx, -cy );
1374 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1375 gdk_gc_set_stipple( gc, mask );
1376 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1377 mask = new_mask;
1378 g_object_unref (gc);
1379 }
1380
1381 gdk_gc_set_clip_mask(use_gc, mask);
1382 if (new_mask != NULL)
1383 gdk_gc_set_clip_origin(use_gc, cx, cy);
1384 else
1385 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1386 }
1387
1388 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1389 // drawing a mono-bitmap (XBitmap) we use the current text GC
1390
1391 if (is_mono)
1392 {
1393 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1394 GdkGC *gc = gdk_gc_new( bitmap );
1395 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1396 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1397 gdk_wx_draw_bitmap(bitmap, gc, use_bitmap.GetPixmap(), 0, 0);
1398
1399 gdk_draw_drawable(m_gdkwindow, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1400
1401 g_object_unref (bitmap);
1402 g_object_unref (gc);
1403 }
1404 else
1405 {
1406 // was: gdk_draw_drawable( m_gdkwindow, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1407 gdk_draw_drawable(m_gdkwindow, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1408 }
1409
1410 // remove mask again if any
1411 if (mask != NULL)
1412 {
1413 gdk_gc_set_clip_mask(use_gc, NULL);
1414 gdk_gc_set_clip_origin(use_gc, 0, 0);
1415 if (!m_currentClippingRegion.IsNull())
1416 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1417 }
1418
1419 if (new_mask)
1420 g_object_unref (new_mask);
1421 }
1422 else // use_bitmap_method
1423 {
1424 if (selected.IsOk() && ((width != ww) || (height != hh)))
1425 {
1426 // get clip coords
1427 wxRegion tmp( xx,yy,ww,hh );
1428 tmp.Intersect( m_currentClippingRegion );
1429 wxCoord cx,cy,cw,ch;
1430 tmp.GetBox(cx,cy,cw,ch);
1431
1432 // rescale bitmap
1433 wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1434
1435 // draw scaled bitmap
1436 // was: gdk_draw_drawable( m_gdkwindow, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1437 gdk_draw_drawable( m_gdkwindow, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1438 }
1439 else
1440 {
1441 // No scaling and not a memory dc with a mask either
1442 GdkWindow* window = NULL;
1443 wxDCImpl *impl = source->GetImpl();
1444 wxWindowDCImpl *gtk_impl = wxDynamicCast(impl, wxWindowDCImpl);
1445 if (gtk_impl)
1446 window = gtk_impl->GetGDKWindow();
1447 if ( !window )
1448 {
1449 SetLogicalFunction( old_logical_func );
1450 return false;
1451 }
1452
1453 // copy including child window contents
1454 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1455 gdk_draw_drawable( m_gdkwindow, m_penGC,
1456 window,
1457 xsrc, ysrc, xx, yy,
1458 width, height );
1459 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1460 }
1461 }
1462
1463 SetLogicalFunction( old_logical_func );
1464
1465 return true;
1466 }
1467
1468 void wxWindowDCImpl::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1469 {
1470 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1471
1472 if (!m_gdkwindow) return;
1473
1474 if (text.empty()) return;
1475
1476 x = XLOG2DEV(x);
1477 y = YLOG2DEV(y);
1478
1479 wxCHECK_RET( m_context, wxT("no Pango context") );
1480 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1481 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1482
1483 gdk_pango_context_set_colormap( m_context, m_cmap );
1484
1485 bool underlined = m_font.IsOk() && m_font.GetUnderlined();
1486
1487 const wxCharBuffer data = wxGTK_CONV( text );
1488 if ( !data )
1489 return;
1490 size_t datalen = strlen(data);
1491
1492 // in Pango >= 1.16 the "underline of leading/trailing spaces" bug
1493 // has been fixed and thus the hack implemented below should never be used
1494 static bool pangoOk = !wx_pango_version_check(1, 16, 0);
1495
1496 bool needshack = underlined && !pangoOk;
1497 char *hackstring = NULL;
1498
1499 if (needshack)
1500 {
1501 // a PangoLayout which has leading/trailing spaces with underlined font
1502 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1503 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1504 // this behaviour. To workaround this problem, we use a special hack here
1505 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1506 // empty space characters and give them a dummy colour attribute.
1507 // This will force Pango to underline the leading/trailing spaces, too.
1508
1509 // need to realloc the string to prepend & append our special characters
1510 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1511
1512 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1513 strcpy(hackstring, "\342\200\214");
1514
1515 // copy the user string
1516 memcpy(&hackstring[3], data, datalen);
1517
1518 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1519 strcpy(&hackstring[datalen+3], "\342\200\214");
1520
1521 // the special characters that we added require 6 additional bytes:
1522 datalen += 6;
1523
1524 pango_layout_set_text(m_layout, hackstring, datalen);
1525 }
1526 else
1527 {
1528 pango_layout_set_text(m_layout, data, datalen);
1529 }
1530
1531 if (underlined)
1532 {
1533 PangoAttrList *attrs = pango_attr_list_new();
1534 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1535 a->start_index = 0;
1536 a->end_index = datalen;
1537 pango_attr_list_insert(attrs, a);
1538
1539 if (needshack)
1540 {
1541 // dummy colour for the leading space
1542 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1543 a->start_index = 0;
1544 a->end_index = 1;
1545 pango_attr_list_insert(attrs, a);
1546
1547 // dummy colour for the trailing space
1548 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1549 a->start_index = datalen - 1;
1550 a->end_index = datalen;
1551 pango_attr_list_insert(attrs, a);
1552 }
1553
1554 pango_layout_set_attributes(m_layout, attrs);
1555 pango_attr_list_unref(attrs);
1556 }
1557
1558 int w,h;
1559
1560 if (fabs(m_scaleY - 1.0) > 0.00001)
1561 {
1562 // If there is a user or actually any scale applied to
1563 // the device context, scale the font.
1564
1565 // scale font description
1566 gint oldSize = pango_font_description_get_size( m_fontdesc );
1567 double size = oldSize;
1568 size = size * m_scaleY;
1569 pango_font_description_set_size( m_fontdesc, (gint)size );
1570
1571 // actually apply scaled font
1572 pango_layout_set_font_description( m_layout, m_fontdesc );
1573
1574 pango_layout_get_pixel_size( m_layout, &w, &h );
1575 if ( m_backgroundMode == wxSOLID )
1576 {
1577 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1578 gdk_draw_rectangle(m_gdkwindow, m_textGC, TRUE, x, y, w, h);
1579 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1580 }
1581
1582 // Draw layout.
1583 if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
1584 gdk_draw_layout( m_gdkwindow, m_textGC, x-w, y, m_layout );
1585 else
1586 gdk_draw_layout( m_gdkwindow, m_textGC, x, y, m_layout );
1587
1588 // reset unscaled size
1589 pango_font_description_set_size( m_fontdesc, oldSize );
1590
1591 // actually apply unscaled font
1592 pango_layout_set_font_description( m_layout, m_fontdesc );
1593 }
1594 else
1595 {
1596 pango_layout_get_pixel_size( m_layout, &w, &h );
1597 if ( m_backgroundMode == wxSOLID )
1598 {
1599 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1600 gdk_draw_rectangle(m_gdkwindow, m_textGC, TRUE, x, y, w, h);
1601 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1602 }
1603
1604 // Draw layout.
1605 if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
1606 gdk_draw_layout( m_gdkwindow, m_textGC, x-w, y, m_layout );
1607 else
1608 gdk_draw_layout( m_gdkwindow, m_textGC, x, y, m_layout );
1609 }
1610
1611 if (underlined)
1612 {
1613 // undo underline attributes setting:
1614 pango_layout_set_attributes(m_layout, NULL);
1615 }
1616
1617 wxCoord width = w;
1618 wxCoord height = h;
1619
1620 width = wxCoord(width / m_scaleX);
1621 height = wxCoord(height / m_scaleY);
1622 CalcBoundingBox (x + width, y + height);
1623 CalcBoundingBox (x, y);
1624
1625 if (hackstring)
1626 free(hackstring);
1627 }
1628
1629
1630 // TODO: There is an example of rotating text with GTK2 that would probably be
1631 // a better approach here:
1632 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1633
1634 void wxWindowDCImpl::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1635 {
1636 #if wxUSE_IMAGE
1637 if (!m_gdkwindow || text.empty())
1638 return;
1639
1640 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1641
1642 if ( wxIsNullDouble(angle) )
1643 {
1644 DoDrawText(text, x, y);
1645 return;
1646 }
1647
1648 wxCoord w;
1649 wxCoord h;
1650
1651 // TODO: implement later without GdkFont for GTK 2.0
1652 DoGetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1653
1654 // draw the string normally
1655 wxBitmap src(w, h);
1656 wxMemoryDC dc;
1657 dc.SelectObject(src);
1658 dc.SetFont(GetFont());
1659 dc.SetBackground(*wxBLACK_BRUSH);
1660 dc.SetBrush(*wxBLACK_BRUSH);
1661 dc.Clear();
1662 dc.SetTextForeground( *wxWHITE );
1663 dc.DrawText(text, 0, 0);
1664 dc.SelectObject(wxNullBitmap);
1665
1666 // Calculate the size of the rotated bounding box.
1667 double rad = DegToRad(angle);
1668 double dx = cos(rad),
1669 dy = sin(rad);
1670
1671 // the rectngle vertices are counted clockwise with the first one being at
1672 // (0, 0) (or, rather, at (x, y))
1673 double x2 = w*dx,
1674 y2 = -w*dy; // y axis points to the bottom, hence minus
1675 double x4 = h*dy,
1676 y4 = h*dx;
1677 double x3 = x4 + x2,
1678 y3 = y4 + y2;
1679
1680 // calc max and min
1681 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1682 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1683 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1684 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1685
1686
1687 wxImage image = src.ConvertToImage();
1688
1689 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1690 m_textForegroundColour.Green(),
1691 m_textForegroundColour.Blue() );
1692 image = image.Rotate( rad, wxPoint(0,0) );
1693
1694 int i_angle = (int) angle;
1695 i_angle = i_angle % 360;
1696 if (i_angle < 0)
1697 i_angle += 360;
1698 int xoffset = 0;
1699 if ((i_angle >= 90.0) && (i_angle < 270.0))
1700 xoffset = image.GetWidth();
1701 int yoffset = 0;
1702 if ((i_angle >= 0.0) && (i_angle < 180.0))
1703 yoffset = image.GetHeight();
1704
1705 if ((i_angle >= 0) && (i_angle < 90))
1706 yoffset -= (int)( cos(rad)*h );
1707 if ((i_angle >= 90) && (i_angle < 180))
1708 xoffset -= (int)( sin(rad)*h );
1709 if ((i_angle >= 180) && (i_angle < 270))
1710 yoffset -= (int)( cos(rad)*h );
1711 if ((i_angle >= 270) && (i_angle < 360))
1712 xoffset -= (int)( sin(rad)*h );
1713
1714 int i_x = x - xoffset;
1715 int i_y = y - yoffset;
1716
1717 src = image;
1718 DoDrawBitmap( src, i_x, i_y, true );
1719
1720
1721 // it would be better to draw with non underlined font and draw the line
1722 // manually here (it would be more straight...)
1723 #if 0
1724 if ( m_font.GetUnderlined() )
1725 {
1726 gdk_draw_line( m_gdkwindow, m_textGC,
1727 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1728 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1729 }
1730 #endif // 0
1731
1732 // update the bounding box
1733 CalcBoundingBox(x + minX, y + minY);
1734 CalcBoundingBox(x + maxX, y + maxY);
1735 #else // !wxUSE_IMAGE
1736 wxUnusedVar(text);
1737 wxUnusedVar(x);
1738 wxUnusedVar(y);
1739 wxUnusedVar(angle);
1740 #endif // wxUSE_IMAGE/!wxUSE_IMAGE
1741 }
1742
1743 void wxWindowDCImpl::DoGetTextExtent(const wxString &string,
1744 wxCoord *width, wxCoord *height,
1745 wxCoord *descent, wxCoord *externalLeading,
1746 const wxFont *theFont) const
1747 {
1748 if ( width )
1749 *width = 0;
1750 if ( height )
1751 *height = 0;
1752 if ( descent )
1753 *descent = 0;
1754 if ( externalLeading )
1755 *externalLeading = 0;
1756
1757 if (string.empty())
1758 return;
1759
1760 // ensure that theFont is always non-NULL
1761 if ( !theFont || !theFont->IsOk() )
1762 theFont = wx_const_cast(wxFont *, &m_font);
1763
1764 // and use it if it's valid
1765 if ( theFont->IsOk() )
1766 {
1767 pango_layout_set_font_description
1768 (
1769 m_layout,
1770 theFont->GetNativeFontInfo()->description
1771 );
1772 }
1773
1774 // Set layout's text
1775 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1776 if ( !dataUTF8 )
1777 {
1778 // hardly ideal, but what else can we do if conversion failed?
1779 return;
1780 }
1781
1782 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1783
1784 if (descent)
1785 {
1786 int h;
1787 pango_layout_get_pixel_size( m_layout, width, &h );
1788 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1789 int baseline = pango_layout_iter_get_baseline(iter);
1790 pango_layout_iter_free(iter);
1791 *descent = h - PANGO_PIXELS(baseline);
1792
1793 if (height)
1794 *height = (wxCoord) h;
1795 }
1796 else
1797 {
1798 pango_layout_get_pixel_size( m_layout, width, height );
1799 }
1800
1801 // Reset old font description
1802 if (theFont->IsOk())
1803 pango_layout_set_font_description( m_layout, m_fontdesc );
1804 }
1805
1806
1807 bool wxWindowDCImpl::DoGetPartialTextExtents(const wxString& text,
1808 wxArrayInt& widths) const
1809 {
1810 const size_t len = text.length();
1811 widths.Empty();
1812 widths.Add(0, len);
1813
1814 if (text.empty())
1815 return true;
1816
1817 // Set layout's text
1818 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(text, m_font);
1819 if ( !dataUTF8 )
1820 {
1821 // hardly ideal, but what else can we do if conversion failed?
1822 wxLogLastError(wxT("DoGetPartialTextExtents"));
1823 return false;
1824 }
1825
1826 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1827
1828 // Calculate the position of each character based on the widths of
1829 // the previous characters
1830
1831 // Code borrowed from Scintilla's PlatGTK
1832 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1833 PangoRectangle pos;
1834 pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
1835 size_t i = 0;
1836 while (pango_layout_iter_next_cluster(iter))
1837 {
1838 pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
1839 int position = PANGO_PIXELS(pos.x);
1840 widths[i++] = position;
1841 }
1842 while (i < len)
1843 widths[i++] = PANGO_PIXELS(pos.x + pos.width);
1844 pango_layout_iter_free(iter);
1845
1846 return true;
1847 }
1848
1849
1850 wxCoord wxWindowDCImpl::GetCharWidth() const
1851 {
1852 pango_layout_set_text( m_layout, "H", 1 );
1853 int w;
1854 pango_layout_get_pixel_size( m_layout, &w, NULL );
1855 return w;
1856 }
1857
1858 wxCoord wxWindowDCImpl::GetCharHeight() const
1859 {
1860 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1861 wxCHECK_MSG( metrics, -1, _T("failed to get pango font metrics") );
1862
1863 wxCoord h = PANGO_PIXELS (pango_font_metrics_get_descent (metrics) +
1864 pango_font_metrics_get_ascent (metrics));
1865 pango_font_metrics_unref (metrics);
1866 return h;
1867 }
1868
1869 void wxWindowDCImpl::Clear()
1870 {
1871 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1872
1873 if (!m_gdkwindow) return;
1874
1875 int width,height;
1876 DoGetSize( &width, &height );
1877 gdk_draw_rectangle( m_gdkwindow, m_bgGC, TRUE, 0, 0, width, height );
1878 }
1879
1880 void wxWindowDCImpl::SetFont( const wxFont &font )
1881 {
1882 m_font = font;
1883
1884 if (m_font.IsOk())
1885 {
1886 if (m_fontdesc)
1887 pango_font_description_free( m_fontdesc );
1888
1889 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1890
1891
1892 if (m_window)
1893 {
1894 PangoContext *oldContext = m_context;
1895
1896 m_context = m_window->GtkGetPangoDefaultContext();
1897
1898 // If we switch back/forth between different contexts
1899 // we also have to create a new layout. I think so,
1900 // at least, and it doesn't hurt to do it.
1901 if (oldContext != m_context)
1902 {
1903 if (m_layout)
1904 g_object_unref (m_layout);
1905
1906 m_layout = pango_layout_new( m_context );
1907 }
1908 }
1909
1910 pango_layout_set_font_description( m_layout, m_fontdesc );
1911 }
1912 }
1913
1914 void wxWindowDCImpl::SetPen( const wxPen &pen )
1915 {
1916 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1917
1918 if (m_pen == pen) return;
1919
1920 m_pen = pen;
1921
1922 if (!m_pen.IsOk()) return;
1923
1924 if (!m_gdkwindow) return;
1925
1926 gint width = m_pen.GetWidth();
1927 if (width <= 0)
1928 {
1929 // CMB: if width is non-zero scale it with the dc
1930 width = 1;
1931 }
1932 else
1933 {
1934 // X doesn't allow different width in x and y and so we take
1935 // the average
1936 double w = 0.5 +
1937 ( fabs((double) XLOG2DEVREL(width)) +
1938 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1939 width = (int)w;
1940 if ( !width )
1941 {
1942 // width can't be 0 or an internal GTK error occurs inside
1943 // gdk_gc_set_dashes() below
1944 width = 1;
1945 }
1946 }
1947
1948 static const wxGTKDash dotted[] = {1, 1};
1949 static const wxGTKDash short_dashed[] = {2, 2};
1950 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1951 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1952
1953 // We express dash pattern in pen width unit, so we are
1954 // independent of zoom factor and so on...
1955 int req_nb_dash;
1956 const wxGTKDash *req_dash;
1957
1958 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1959 switch (m_pen.GetStyle())
1960 {
1961 case wxUSER_DASH:
1962 {
1963 lineStyle = GDK_LINE_ON_OFF_DASH;
1964 req_nb_dash = m_pen.GetDashCount();
1965 req_dash = (wxGTKDash*)m_pen.GetDash();
1966 break;
1967 }
1968 case wxDOT:
1969 {
1970 lineStyle = GDK_LINE_ON_OFF_DASH;
1971 req_nb_dash = 2;
1972 req_dash = dotted;
1973 break;
1974 }
1975 case wxLONG_DASH:
1976 {
1977 lineStyle = GDK_LINE_ON_OFF_DASH;
1978 req_nb_dash = 2;
1979 req_dash = wxCoord_dashed;
1980 break;
1981 }
1982 case wxSHORT_DASH:
1983 {
1984 lineStyle = GDK_LINE_ON_OFF_DASH;
1985 req_nb_dash = 2;
1986 req_dash = short_dashed;
1987 break;
1988 }
1989 case wxDOT_DASH:
1990 {
1991 // lineStyle = GDK_LINE_DOUBLE_DASH;
1992 lineStyle = GDK_LINE_ON_OFF_DASH;
1993 req_nb_dash = 4;
1994 req_dash = dotted_dashed;
1995 break;
1996 }
1997
1998 case wxTRANSPARENT:
1999 case wxSTIPPLE_MASK_OPAQUE:
2000 case wxSTIPPLE:
2001 case wxSOLID:
2002 default:
2003 {
2004 lineStyle = GDK_LINE_SOLID;
2005 req_dash = (wxGTKDash*)NULL;
2006 req_nb_dash = 0;
2007 break;
2008 }
2009 }
2010
2011 if (req_dash && req_nb_dash)
2012 {
2013 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
2014 if (real_req_dash)
2015 {
2016 for (int i = 0; i < req_nb_dash; i++)
2017 real_req_dash[i] = req_dash[i] * width;
2018 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
2019 delete[] real_req_dash;
2020 }
2021 else
2022 {
2023 // No Memory. We use non-scaled dash pattern...
2024 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
2025 }
2026 }
2027
2028 GdkCapStyle capStyle = GDK_CAP_ROUND;
2029 switch (m_pen.GetCap())
2030 {
2031 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
2032 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
2033 case wxCAP_ROUND:
2034 default:
2035 {
2036 if (width <= 1)
2037 {
2038 width = 0;
2039 capStyle = GDK_CAP_NOT_LAST;
2040 }
2041 else
2042 {
2043 capStyle = GDK_CAP_ROUND;
2044 }
2045 break;
2046 }
2047 }
2048
2049 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
2050 switch (m_pen.GetJoin())
2051 {
2052 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2053 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2054 case wxJOIN_ROUND:
2055 default: { joinStyle = GDK_JOIN_ROUND; break; }
2056 }
2057
2058 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2059
2060 m_pen.GetColour().CalcPixel( m_cmap );
2061 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2062 }
2063
2064 void wxWindowDCImpl::SetBrush( const wxBrush &brush )
2065 {
2066 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2067
2068 if (m_brush == brush) return;
2069
2070 m_brush = brush;
2071
2072 if (!m_brush.IsOk()) return;
2073
2074 if (!m_gdkwindow) return;
2075
2076 m_brush.GetColour().CalcPixel( m_cmap );
2077 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2078
2079 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2080
2081 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->IsOk()))
2082 {
2083 if (m_brush.GetStipple()->GetDepth() != 1)
2084 {
2085 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2086 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2087 }
2088 else
2089 {
2090 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2091 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2092 }
2093 }
2094
2095 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2096 {
2097 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2098 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2099 }
2100
2101 if (m_brush.IsHatch())
2102 {
2103 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2104 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2105 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2106 }
2107 }
2108
2109 void wxWindowDCImpl::SetBackground( const wxBrush &brush )
2110 {
2111 /* CMB 21/7/98: Added SetBackground. Sets background brush
2112 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2113
2114 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2115
2116 if (m_backgroundBrush == brush) return;
2117
2118 m_backgroundBrush = brush;
2119
2120 if (!m_backgroundBrush.IsOk()) return;
2121
2122 if (!m_gdkwindow) return;
2123
2124 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2125 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2126 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2127 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2128 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2129
2130 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2131
2132 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->IsOk()))
2133 {
2134 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2135 {
2136 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2137 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2138 }
2139 else
2140 {
2141 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2142 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2143 }
2144 }
2145
2146 if (m_backgroundBrush.IsHatch())
2147 {
2148 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2149 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2150 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2151 }
2152 }
2153
2154 void wxWindowDCImpl::SetLogicalFunction( int function )
2155 {
2156 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2157
2158 if (m_logicalFunction == function)
2159 return;
2160
2161 // VZ: shouldn't this be a CHECK?
2162 if (!m_gdkwindow)
2163 return;
2164
2165 GdkFunction mode;
2166 switch (function)
2167 {
2168 case wxXOR: mode = GDK_XOR; break;
2169 case wxINVERT: mode = GDK_INVERT; break;
2170 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2171 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2172 case wxCLEAR: mode = GDK_CLEAR; break;
2173 case wxSET: mode = GDK_SET; break;
2174 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2175 case wxAND: mode = GDK_AND; break;
2176 case wxOR: mode = GDK_OR; break;
2177 case wxEQUIV: mode = GDK_EQUIV; break;
2178 case wxNAND: mode = GDK_NAND; break;
2179 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2180 case wxCOPY: mode = GDK_COPY; break;
2181 case wxNO_OP: mode = GDK_NOOP; break;
2182 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2183
2184 // unsupported by GTK
2185 case wxNOR: mode = GDK_COPY; break;
2186 default:
2187 wxFAIL_MSG( wxT("unsupported logical function") );
2188 mode = GDK_COPY;
2189 }
2190
2191 m_logicalFunction = function;
2192
2193 gdk_gc_set_function( m_penGC, mode );
2194 gdk_gc_set_function( m_brushGC, mode );
2195
2196 // to stay compatible with wxMSW, we don't apply ROPs to the text
2197 // operations (i.e. DrawText/DrawRotatedText).
2198 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2199 gdk_gc_set_function( m_textGC, mode );
2200 }
2201
2202 void wxWindowDCImpl::SetTextForeground( const wxColour &col )
2203 {
2204 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2205
2206 // don't set m_textForegroundColour to an invalid colour as we'd crash
2207 // later then (we use m_textForegroundColour.GetColor() without checking
2208 // in a few places)
2209 if ( !col.IsOk() || (m_textForegroundColour == col) )
2210 return;
2211
2212 m_textForegroundColour = col;
2213
2214 if ( m_gdkwindow )
2215 {
2216 m_textForegroundColour.CalcPixel( m_cmap );
2217 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2218 }
2219 }
2220
2221 void wxWindowDCImpl::SetTextBackground( const wxColour &col )
2222 {
2223 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2224
2225 // same as above
2226 if ( !col.IsOk() || (m_textBackgroundColour == col) )
2227 return;
2228
2229 m_textBackgroundColour = col;
2230
2231 if ( m_gdkwindow )
2232 {
2233 m_textBackgroundColour.CalcPixel( m_cmap );
2234 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2235 }
2236 }
2237
2238 void wxWindowDCImpl::SetBackgroundMode( int mode )
2239 {
2240 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2241
2242 m_backgroundMode = mode;
2243
2244 if (!m_gdkwindow) return;
2245
2246 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2247 // transparent/solid background mode
2248
2249 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2250 {
2251 gdk_gc_set_fill( m_brushGC,
2252 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2253 }
2254 }
2255
2256 void wxWindowDCImpl::SetPalette( const wxPalette& WXUNUSED(palette) )
2257 {
2258 wxFAIL_MSG( wxT("wxWindowDCImpl::SetPalette not implemented") );
2259 }
2260
2261 void wxWindowDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2262 {
2263 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2264
2265 if (!m_gdkwindow) return;
2266
2267 wxRect rect;
2268 rect.x = XLOG2DEV(x);
2269 rect.y = YLOG2DEV(y);
2270 rect.width = XLOG2DEVREL(width);
2271 rect.height = YLOG2DEVREL(height);
2272
2273 if (m_window && m_window->m_wxwindow &&
2274 (m_window->GetLayoutDirection() == wxLayout_RightToLeft))
2275 {
2276 rect.x -= rect.width;
2277 }
2278
2279 if (!m_currentClippingRegion.IsNull())
2280 m_currentClippingRegion.Intersect( rect );
2281 else
2282 m_currentClippingRegion.Union( rect );
2283
2284 #if USE_PAINT_REGION
2285 if (!m_paintClippingRegion.IsNull())
2286 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2287 #endif
2288
2289 wxCoord xx, yy, ww, hh;
2290 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2291 #if wxUSE_NEW_DC
2292 wxGTKDCImpl::DoSetClippingRegion( xx, yy, ww, hh );
2293 #else
2294 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2295 #endif
2296
2297 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2298 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2299 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2300 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2301 }
2302
2303 void wxWindowDCImpl::DoSetClippingRegionAsRegion( const wxRegion &region )
2304 {
2305 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2306
2307 if (region.Empty())
2308 {
2309 DestroyClippingRegion();
2310 return;
2311 }
2312
2313 if (!m_gdkwindow) return;
2314
2315 if (!m_currentClippingRegion.IsNull())
2316 m_currentClippingRegion.Intersect( region );
2317 else
2318 m_currentClippingRegion.Union( region );
2319
2320 #if USE_PAINT_REGION
2321 if (!m_paintClippingRegion.IsNull())
2322 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2323 #endif
2324
2325 wxCoord xx, yy, ww, hh;
2326 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2327 #if wxUSE_NEW_DC
2328 wxGTKDCImpl::DoSetClippingRegion( xx, yy, ww, hh );
2329 #else
2330 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2331 #endif
2332
2333 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2334 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2335 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2336 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2337 }
2338
2339 void wxWindowDCImpl::DestroyClippingRegion()
2340 {
2341 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2342
2343 #if wxUSE_NEW_DC
2344 wxDCImpl::DestroyClippingRegion();
2345 #else
2346 wxDC::DestroyClippingRegion();
2347 #endif
2348
2349 m_currentClippingRegion.Clear();
2350
2351 #if USE_PAINT_REGION
2352 if (!m_paintClippingRegion.IsEmpty())
2353 m_currentClippingRegion.Union( m_paintClippingRegion );
2354 #endif
2355
2356 if (!m_gdkwindow) return;
2357
2358 if (m_currentClippingRegion.IsEmpty())
2359 {
2360 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2361 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2362 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2363 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2364 }
2365 else
2366 {
2367 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2368 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2369 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2370 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2371 }
2372 }
2373
2374 void wxWindowDCImpl::Destroy()
2375 {
2376 if (m_penGC) wxFreePoolGC( m_penGC );
2377 m_penGC = (GdkGC*) NULL;
2378 if (m_brushGC) wxFreePoolGC( m_brushGC );
2379 m_brushGC = (GdkGC*) NULL;
2380 if (m_textGC) wxFreePoolGC( m_textGC );
2381 m_textGC = (GdkGC*) NULL;
2382 if (m_bgGC) wxFreePoolGC( m_bgGC );
2383 m_bgGC = (GdkGC*) NULL;
2384 }
2385
2386 void wxWindowDCImpl::SetDeviceOrigin( wxCoord x, wxCoord y )
2387 {
2388 m_deviceOriginX = x;
2389 m_deviceOriginY = y;
2390
2391 ComputeScaleAndOrigin();
2392 }
2393
2394 void wxWindowDCImpl::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2395 {
2396 m_signX = (xLeftRight ? 1 : -1);
2397 m_signY = (yBottomUp ? -1 : 1);
2398
2399 if (m_window && m_window->m_wxwindow &&
2400 (m_window->GetLayoutDirection() == wxLayout_RightToLeft))
2401 m_signX = -m_signX;
2402
2403 ComputeScaleAndOrigin();
2404 }
2405
2406 void wxWindowDCImpl::ComputeScaleAndOrigin()
2407 {
2408 const wxRealPoint origScale(m_scaleX, m_scaleY);
2409
2410 #if wxUSE_NEW_DC
2411 wxDCImpl::ComputeScaleAndOrigin();
2412 #else
2413 wxDC::ComputeScaleAndOrigin();
2414 #endif
2415
2416 // if scale has changed call SetPen to recalulate the line width
2417 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.IsOk() )
2418 {
2419 // this is a bit artificial, but we need to force wxDC to think the pen
2420 // has changed
2421 wxPen pen = m_pen;
2422 m_pen = wxNullPen;
2423 SetPen( pen );
2424 }
2425 }
2426
2427 // Resolution in pixels per logical inch
2428 wxSize wxWindowDCImpl::GetPPI() const
2429 {
2430 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2431 }
2432
2433 int wxWindowDCImpl::GetDepth() const
2434 {
2435 return gdk_drawable_get_depth(m_gdkwindow);
2436 }
2437
2438
2439 //-----------------------------------------------------------------------------
2440 // wxClientDCImpl
2441 //-----------------------------------------------------------------------------
2442
2443 IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
2444
2445 wxClientDCImpl::wxClientDCImpl( wxDC *owner )
2446 : wxWindowDCImpl( owner )
2447 {
2448 }
2449
2450 wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *win )
2451 : wxWindowDCImpl( owner, win )
2452 {
2453 wxCHECK_RET( win, _T("NULL window in wxClientDCImpl::wxClientDC") );
2454
2455 #ifdef __WXUNIVERSAL__
2456 wxPoint ptOrigin = win->GetClientAreaOrigin();
2457 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2458 wxSize size = win->GetClientSize();
2459 DoSetClippingRegion(0, 0, size.x, size.y);
2460 #endif
2461 // __WXUNIVERSAL__
2462 }
2463
2464 void wxClientDCImpl::DoGetSize(int *width, int *height) const
2465 {
2466 wxCHECK_RET( m_window, _T("GetSize() doesn't work without window") );
2467
2468 m_window->GetClientSize( width, height );
2469 }
2470
2471 //-----------------------------------------------------------------------------
2472 // wxPaintDCImpl
2473 //-----------------------------------------------------------------------------
2474
2475 IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxClientDCImpl)
2476
2477 // Limit the paint region to the window size. Sometimes
2478 // the paint region is too big, and this risks X11 errors
2479 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2480 {
2481 wxRect originalRect = region.GetBox();
2482 wxRect rect(originalRect);
2483 if (rect.width + rect.x > sz.x)
2484 rect.width = sz.x - rect.x;
2485 if (rect.height + rect.y > sz.y)
2486 rect.height = sz.y - rect.y;
2487 if (rect != originalRect)
2488 {
2489 region = wxRegion(rect);
2490 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2491 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2492 rect.x, rect.y, rect.width, rect.height);
2493 }
2494 }
2495
2496 wxPaintDCImpl::wxPaintDCImpl( wxDC *owner )
2497 : wxClientDCImpl( owner )
2498 {
2499 }
2500
2501 wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *win )
2502 : wxClientDCImpl( owner, win )
2503 {
2504 #if USE_PAINT_REGION
2505 if (!win->m_clipPaintRegion)
2506 return;
2507
2508 wxSize sz = win->GetSize();
2509 m_paintClippingRegion = win->m_nativeUpdateRegion;
2510 wxLimitRegionToSize(m_paintClippingRegion, sz);
2511
2512 GdkRegion *region = m_paintClippingRegion.GetRegion();
2513 if ( region )
2514 {
2515 m_currentClippingRegion.Union( m_paintClippingRegion );
2516 wxLimitRegionToSize(m_currentClippingRegion, sz);
2517
2518 if (sz.x <= 0 || sz.y <= 0)
2519 return ;
2520
2521 gdk_gc_set_clip_region( m_penGC, region );
2522 gdk_gc_set_clip_region( m_brushGC, region );
2523 gdk_gc_set_clip_region( m_textGC, region );
2524 gdk_gc_set_clip_region( m_bgGC, region );
2525 }
2526 #endif
2527 }
2528
2529 // ----------------------------------------------------------------------------
2530 // wxDCModule
2531 // ----------------------------------------------------------------------------
2532
2533 class wxDCModule : public wxModule
2534 {
2535 public:
2536 bool OnInit();
2537 void OnExit();
2538
2539 private:
2540 DECLARE_DYNAMIC_CLASS(wxDCModule)
2541 };
2542
2543 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2544
2545 bool wxDCModule::OnInit()
2546 {
2547 wxInitGCPool();
2548 return true;
2549 }
2550
2551 void wxDCModule::OnExit()
2552 {
2553 wxCleanUpGCPool();
2554 }
wxWidgets (Impactor)