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