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[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: 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 #include "wx/dcmemory.h"
19 #include "wx/image.h"
20 #include "wx/module.h"
21 #include "wx/log.h"
22 #include "wx/fontutil.h"
23
24 #include "wx/gtk/win_gtk.h"
25
26 #include "wx/math.h" // for floating-point functions
27
28 #include <gdk/gdk.h>
29 #include <gdk/gdkx.h>
30 #include <gdk/gdkprivate.h>
31 #include <gtk/gtk.h>
32
33 //-----------------------------------------------------------------------------
34 // local defines
35 //-----------------------------------------------------------------------------
36
37 #define USE_PAINT_REGION 1
38
39 //-----------------------------------------------------------------------------
40 // local data
41 //-----------------------------------------------------------------------------
42
43 #include "bdiag.xbm"
44 #include "fdiag.xbm"
45 #include "cdiag.xbm"
46 #include "horiz.xbm"
47 #include "verti.xbm"
48 #include "cross.xbm"
49 #define num_hatches 6
50
51 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
52 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
53
54
55 static GdkPixmap *hatches[num_hatches];
56 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
57
58 extern GtkWidget *wxGetRootWindow();
59
60 //-----------------------------------------------------------------------------
61 // constants
62 //-----------------------------------------------------------------------------
63
64 const double RAD2DEG = 180.0 / M_PI;
65
66 // ----------------------------------------------------------------------------
67 // private functions
68 // ----------------------------------------------------------------------------
69
70 static inline double dmax(double a, double b) { return a > b ? a : b; }
71 static inline double dmin(double a, double b) { return a < b ? a : b; }
72
73 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
74
75 //-----------------------------------------------------------------------------
76 // temporary implementation of the missing GDK function
77 //-----------------------------------------------------------------------------
78
79 #include "gdk/gdkprivate.h"
80
81 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
82 GdkGC *gc,
83 GdkDrawable *src,
84 gint xsrc,
85 gint ysrc,
86 gint xdest,
87 gint ydest,
88 gint width,
89 gint height)
90 {
91 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
92 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
93 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
94
95 gint src_width, src_height;
96 gdk_drawable_get_size(src, &src_width, &src_height);
97 if (width == -1) width = src_width;
98 if (height == -1) height = src_height;
99
100 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
101 GDK_WINDOW_XID(src),
102 GDK_WINDOW_XID(drawable),
103 GDK_GC_XGC(gc),
104 xsrc, ysrc,
105 width, height,
106 0, 0,
107 1 );
108 }
109
110 //-----------------------------------------------------------------------------
111 // Implement Pool of Graphic contexts. Creating them takes too much time.
112 //-----------------------------------------------------------------------------
113
114 enum wxPoolGCType
115 {
116 wxGC_ERROR = 0,
117 wxTEXT_MONO,
118 wxBG_MONO,
119 wxPEN_MONO,
120 wxBRUSH_MONO,
121 wxTEXT_COLOUR,
122 wxBG_COLOUR,
123 wxPEN_COLOUR,
124 wxBRUSH_COLOUR,
125 wxTEXT_SCREEN,
126 wxBG_SCREEN,
127 wxPEN_SCREEN,
128 wxBRUSH_SCREEN
129 };
130
131 struct wxGC
132 {
133 GdkGC *m_gc;
134 wxPoolGCType m_type;
135 bool m_used;
136 };
137
138 #define GC_POOL_ALLOC_SIZE 100
139
140 static int wxGCPoolSize = 0;
141
142 static wxGC *wxGCPool = NULL;
143
144 static void wxInitGCPool()
145 {
146 // This really could wait until the first call to
147 // wxGetPoolGC, but we will make the first allocation
148 // now when other initialization is being performed.
149
150 // Set initial pool size.
151 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
152
153 // Allocate initial pool.
154 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
155 if (wxGCPool == NULL)
156 {
157 // If we cannot malloc, then fail with error
158 // when debug is enabled. If debug is not enabled,
159 // the problem will eventually get caught
160 // in wxGetPoolGC.
161 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
162 return;
163 }
164
165 // Zero initial pool.
166 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
167 }
168
169 static void wxCleanUpGCPool()
170 {
171 for (int i = 0; i < wxGCPoolSize; i++)
172 {
173 if (wxGCPool[i].m_gc)
174 gdk_gc_unref( wxGCPool[i].m_gc );
175 }
176
177 free(wxGCPool);
178 wxGCPool = NULL;
179 wxGCPoolSize = 0;
180 }
181
182 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
183 {
184 wxGC *pptr;
185
186 // Look for an available GC.
187 for (int i = 0; i < wxGCPoolSize; i++)
188 {
189 if (!wxGCPool[i].m_gc)
190 {
191 wxGCPool[i].m_gc = gdk_gc_new( window );
192 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
193 wxGCPool[i].m_type = type;
194 wxGCPool[i].m_used = false;
195 }
196 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
197 {
198 wxGCPool[i].m_used = true;
199 return wxGCPool[i].m_gc;
200 }
201 }
202
203 // We did not find an available GC.
204 // We need to grow the GC pool.
205 pptr = (wxGC *)realloc(wxGCPool,
206 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
207 if (pptr != NULL)
208 {
209 // Initialize newly allocated pool.
210 wxGCPool = pptr;
211 memset(&wxGCPool[wxGCPoolSize], 0,
212 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
213
214 // Initialize entry we will return.
215 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
216 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
217 wxGCPool[wxGCPoolSize].m_type = type;
218 wxGCPool[wxGCPoolSize].m_used = true;
219
220 // Set new value of pool size.
221 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
222
223 // Return newly allocated entry.
224 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
225 }
226
227 // The realloc failed. Fall through to error.
228 wxFAIL_MSG( wxT("No GC available") );
229
230 return (GdkGC*) NULL;
231 }
232
233 static void wxFreePoolGC( GdkGC *gc )
234 {
235 for (int i = 0; i < wxGCPoolSize; i++)
236 {
237 if (wxGCPool[i].m_gc == gc)
238 {
239 wxGCPool[i].m_used = false;
240 return;
241 }
242 }
243
244 wxFAIL_MSG( wxT("Wrong GC") );
245 }
246
247 //-----------------------------------------------------------------------------
248 // wxWindowDC
249 //-----------------------------------------------------------------------------
250
251 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
252
253 wxWindowDC::wxWindowDC()
254 {
255 m_penGC = (GdkGC *) NULL;
256 m_brushGC = (GdkGC *) NULL;
257 m_textGC = (GdkGC *) NULL;
258 m_bgGC = (GdkGC *) NULL;
259 m_cmap = (GdkColormap *) NULL;
260 m_isMemDC = false;
261 m_isScreenDC = false;
262 m_owner = (wxWindow *)NULL;
263 m_context = (PangoContext *)NULL;
264 m_layout = (PangoLayout *)NULL;
265 m_fontdesc = (PangoFontDescription *)NULL;
266 }
267
268 wxWindowDC::wxWindowDC( wxWindow *window )
269 {
270 wxASSERT_MSG( window, wxT("DC needs a window") );
271
272 m_penGC = (GdkGC *) NULL;
273 m_brushGC = (GdkGC *) NULL;
274 m_textGC = (GdkGC *) NULL;
275 m_bgGC = (GdkGC *) NULL;
276 m_cmap = (GdkColormap *) NULL;
277 m_owner = (wxWindow *)NULL;
278 m_isMemDC = false;
279 m_isScreenDC = false;
280 m_font = window->GetFont();
281
282 GtkWidget *widget = window->m_wxwindow;
283
284 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
285 // code should still be able to create wxClientDCs for them, so we will
286 // use the parent window here then.
287 if ( !widget )
288 {
289 window = window->GetParent();
290 widget = window->m_wxwindow;
291 }
292
293 wxASSERT_MSG( widget, wxT("DC needs a widget") );
294
295 m_context = window->GtkGetPangoDefaultContext();
296 m_layout = pango_layout_new( m_context );
297 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
298
299 GtkPizza *pizza = GTK_PIZZA( widget );
300 m_window = pizza->bin_window;
301
302 // Window not realized ?
303 if (!m_window)
304 {
305 // Don't report problems as per MSW.
306 m_ok = true;
307
308 return;
309 }
310
311 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
312
313 SetUpDC();
314
315 /* this must be done after SetUpDC, bacause SetUpDC calls the
316 repective SetBrush, SetPen, SetBackground etc functions
317 to set up the DC. SetBackground call m_owner->SetBackground
318 and this might not be desired as the standard dc background
319 is white whereas a window might assume gray to be the
320 standard (as e.g. wxStatusBar) */
321
322 m_owner = window;
323 }
324
325 wxWindowDC::~wxWindowDC()
326 {
327 Destroy();
328
329 if (m_layout)
330 g_object_unref( G_OBJECT( m_layout ) );
331 if (m_fontdesc)
332 pango_font_description_free( m_fontdesc );
333 }
334
335 void wxWindowDC::SetUpDC()
336 {
337 m_ok = true;
338
339 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
340
341 if (m_isScreenDC)
342 {
343 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
344 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
345 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
346 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
347 }
348 else
349 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
350 {
351 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
352 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
353 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
354 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
355 }
356 else
357 {
358 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
359 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
360 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
361 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
362 }
363
364 /* background colour */
365 m_backgroundBrush = *wxWHITE_BRUSH;
366 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
367 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
368
369 /* m_textGC */
370 m_textForegroundColour.CalcPixel( m_cmap );
371 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
372
373 m_textBackgroundColour.CalcPixel( m_cmap );
374 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
375
376 gdk_gc_set_fill( m_textGC, GDK_SOLID );
377
378 /* m_penGC */
379 m_pen.GetColour().CalcPixel( m_cmap );
380 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
381 gdk_gc_set_background( m_penGC, bg_col );
382
383 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
384
385 /* m_brushGC */
386 m_brush.GetColour().CalcPixel( m_cmap );
387 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
388 gdk_gc_set_background( m_brushGC, bg_col );
389
390 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
391
392 /* m_bgGC */
393 gdk_gc_set_background( m_bgGC, bg_col );
394 gdk_gc_set_foreground( m_bgGC, bg_col );
395
396 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
397
398 /* ROPs */
399 gdk_gc_set_function( m_textGC, GDK_COPY );
400 gdk_gc_set_function( m_brushGC, GDK_COPY );
401 gdk_gc_set_function( m_penGC, GDK_COPY );
402
403 /* clipping */
404 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
405 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
406 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
407 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
408
409 if (!hatch_bitmap)
410 {
411 hatch_bitmap = hatches;
412 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
413 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
414 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
415 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
416 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
417 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
418 }
419 }
420
421 void wxWindowDC::DoGetSize( int* width, int* height ) const
422 {
423 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
424
425 m_owner->GetSize(width, height);
426 }
427
428 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
429 const wxColour & col, int style);
430
431 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
432 const wxColour& col, int style)
433 {
434 return wxDoFloodFill(this, x, y, col, style);
435 }
436
437 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
438 {
439 // Generic (and therefore rather inefficient) method.
440 // Could be improved.
441 wxMemoryDC memdc;
442 wxBitmap bitmap(1, 1);
443 memdc.SelectObject(bitmap);
444 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
445 memdc.SelectObject(wxNullBitmap);
446
447 wxImage image = bitmap.ConvertToImage();
448 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
449 return true;
450 }
451
452 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
453 {
454 wxCHECK_RET( Ok(), wxT("invalid window dc") );
455
456 if (m_pen.GetStyle() != wxTRANSPARENT)
457 {
458 if (m_window)
459 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
460
461 CalcBoundingBox(x1, y1);
462 CalcBoundingBox(x2, y2);
463 }
464 }
465
466 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
467 {
468 wxCHECK_RET( Ok(), wxT("invalid window dc") );
469
470 if (m_pen.GetStyle() != wxTRANSPARENT)
471 {
472 int w = 0;
473 int h = 0;
474 GetSize( &w, &h );
475 wxCoord xx = XLOG2DEV(x);
476 wxCoord yy = YLOG2DEV(y);
477 if (m_window)
478 {
479 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
480 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
481 }
482 }
483 }
484
485 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
486 wxCoord xc, wxCoord yc )
487 {
488 wxCHECK_RET( Ok(), wxT("invalid window dc") );
489
490 wxCoord xx1 = XLOG2DEV(x1);
491 wxCoord yy1 = YLOG2DEV(y1);
492 wxCoord xx2 = XLOG2DEV(x2);
493 wxCoord yy2 = YLOG2DEV(y2);
494 wxCoord xxc = XLOG2DEV(xc);
495 wxCoord yyc = YLOG2DEV(yc);
496 double dx = xx1 - xxc;
497 double dy = yy1 - yyc;
498 double radius = sqrt((double)(dx*dx+dy*dy));
499 wxCoord r = (wxCoord)radius;
500 double radius1, radius2;
501
502 if (xx1 == xx2 && yy1 == yy2)
503 {
504 radius1 = 0.0;
505 radius2 = 360.0;
506 }
507 else if ( wxIsNullDouble(radius) )
508 {
509 radius1 =
510 radius2 = 0.0;
511 }
512 else
513 {
514 radius1 = (xx1 - xxc == 0) ?
515 (yy1 - yyc < 0) ? 90.0 : -90.0 :
516 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
517 radius2 = (xx2 - xxc == 0) ?
518 (yy2 - yyc < 0) ? 90.0 : -90.0 :
519 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
520 }
521 wxCoord alpha1 = wxCoord(radius1 * 64.0);
522 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
523 while (alpha2 <= 0) alpha2 += 360*64;
524 while (alpha1 > 360*64) alpha1 -= 360*64;
525
526 if (m_window)
527 {
528 if (m_brush.GetStyle() != wxTRANSPARENT)
529 {
530 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
531 {
532 gdk_gc_set_ts_origin( m_textGC,
533 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
534 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
535 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
536 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
537 } else
538 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
539 {
540 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
541 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
542 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
543 } else
544 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
545 {
546 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
547 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
548 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
549 } else
550 if (m_brush.GetStyle() == wxSTIPPLE)
551 {
552 gdk_gc_set_ts_origin( m_brushGC,
553 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
554 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
555 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
556 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
557 }
558 else
559 {
560 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
561 }
562 }
563
564 if (m_pen.GetStyle() != wxTRANSPARENT)
565 {
566 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
567
568 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
569 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
570 }
571 }
572
573 CalcBoundingBox (x1, y1);
574 CalcBoundingBox (x2, y2);
575 }
576
577 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
578 {
579 wxCHECK_RET( Ok(), wxT("invalid window dc") );
580
581 wxCoord xx = XLOG2DEV(x);
582 wxCoord yy = YLOG2DEV(y);
583 wxCoord ww = m_signX * XLOG2DEVREL(width);
584 wxCoord hh = m_signY * YLOG2DEVREL(height);
585
586 // CMB: handle -ve width and/or height
587 if (ww < 0) { ww = -ww; xx = xx - ww; }
588 if (hh < 0) { hh = -hh; yy = yy - hh; }
589
590 if (m_window)
591 {
592 wxCoord start = wxCoord(sa * 64.0);
593 wxCoord end = wxCoord((ea-sa) * 64.0);
594
595 if (m_brush.GetStyle() != wxTRANSPARENT)
596 {
597 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
598 {
599 gdk_gc_set_ts_origin( m_textGC,
600 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
601 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
602 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
603 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
604 } else
605 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
606 {
607 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
608 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
609 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
610 } else
611 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
612 {
613 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
614 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
615 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
616 } else
617 if (m_brush.GetStyle() == wxSTIPPLE)
618 {
619 gdk_gc_set_ts_origin( m_brushGC,
620 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
621 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
622 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
623 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
624 }
625 else
626 {
627 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
628 }
629 }
630
631 if (m_pen.GetStyle() != wxTRANSPARENT)
632 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
633 }
634
635 CalcBoundingBox (x, y);
636 CalcBoundingBox (x + width, y + height);
637 }
638
639 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
640 {
641 wxCHECK_RET( Ok(), wxT("invalid window dc") );
642
643 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
644 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
645
646 CalcBoundingBox (x, y);
647 }
648
649 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
650 {
651 wxCHECK_RET( Ok(), wxT("invalid window dc") );
652
653 if (m_pen.GetStyle() == wxTRANSPARENT) return;
654 if (n <= 0) return;
655
656 //Check, if scaling is necessary
657 bool doScale(true);
658 long val(10);
659 if (!xoffset)
660 if (!yoffset)
661 if (XLOG2DEV(val)==val)
662 if (YLOG2DEV(val)==val)
663 doScale = false;
664
665 GdkPoint *gpts = NULL;
666
667 if (doScale){
668 gpts = new GdkPoint[n];
669 if (! gpts)
670 {
671 wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
672 return;
673 }
674
675 for (int i = 0; i < n; i++)
676 {
677 wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
678 wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
679
680 CalcBoundingBox( x1 + xoffset, y1 + yoffset );
681
682 gpts[i].x = x1;
683 gpts[i].y = y1;
684 }
685 }
686 else {
687 for (int i = 0; i < n; i++) {
688 CalcBoundingBox( points[i].x, points[i].y );
689 }
690
691 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
692 gpts = reinterpret_cast<GdkPoint*>(points);
693 }
694
695 if (m_window)
696 gdk_draw_lines( m_window, m_penGC, gpts, n);
697
698 if (doScale)
699 delete[] gpts;
700 }
701
702 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
703 {
704 wxCHECK_RET( Ok(), wxT("invalid window dc") );
705
706 if (n <= 0) return;
707
708 //Check, if scaling is necessary
709 bool doScale(true);
710 long val(10);
711 if (!xoffset)
712 if (!yoffset)
713 if (XLOG2DEV(val)==val)
714 if (YLOG2DEV(val)==val){
715 doScale = false;
716 }
717
718 GdkPoint *gdkpoints = NULL;
719
720 if (doScale){
721 gdkpoints = new GdkPoint[n+1]; //FIXME: Why the "+1"
722
723 int i;
724 for (i = 0 ; i < n ; i++)
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 else {
733 int i(0);
734 for (; i < n ; ++i) {
735 CalcBoundingBox( points[i].x, points[i].y );
736 }
737 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
738 gdkpoints = reinterpret_cast<GdkPoint*> (points);
739 }
740
741 if (m_window)
742 {
743 //I think wxSOLID is the most often used style (it is for me),
744 //so I put it in front of the if ... ifelse's
745 if (m_brush.GetStyle() == wxSOLID)
746 {
747 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
748 }else
749 if (m_brush.GetStyle() != wxTRANSPARENT)
750 {
751 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
752 {
753 gdk_gc_set_ts_origin( m_textGC,
754 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
755 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
756 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
757 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
758 } else
759 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
760 {
761 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
762 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
763 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
764 } else
765 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
766 {
767 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
768 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
769 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
770 } else
771 if (m_brush.GetStyle() == wxSTIPPLE)
772 {
773 gdk_gc_set_ts_origin( m_brushGC,
774 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
775 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
776 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
777 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
778 }
779 else
780 {
781 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
782 }
783 }
784
785 if (m_pen.GetStyle() != wxTRANSPARENT)
786 {
787 /*
788 for (i = 0 ; i < n ; i++)
789 {
790 gdk_draw_line( m_window, m_penGC,
791 gdkpoints[i%n].x,
792 gdkpoints[i%n].y,
793 gdkpoints[(i+1)%n].x,
794 gdkpoints[(i+1)%n].y);
795 }
796 */
797 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
798
799 }
800 }
801
802 if (doScale)
803 delete[] gdkpoints;
804 }
805
806 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
807 {
808 wxCHECK_RET( Ok(), wxT("invalid window dc") );
809
810 wxCoord xx = XLOG2DEV(x);
811 wxCoord yy = YLOG2DEV(y);
812 wxCoord ww = m_signX * XLOG2DEVREL(width);
813 wxCoord hh = m_signY * YLOG2DEVREL(height);
814
815 // CMB: draw nothing if transformed w or h is 0
816 if (ww == 0 || hh == 0) return;
817
818 // CMB: handle -ve width and/or height
819 if (ww < 0) { ww = -ww; xx = xx - ww; }
820 if (hh < 0) { hh = -hh; yy = yy - hh; }
821
822 if (m_window)
823 {
824 if (m_brush.GetStyle() != wxTRANSPARENT)
825 {
826 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
827 {
828 gdk_gc_set_ts_origin( m_textGC,
829 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
830 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
831 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
832 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
833 } else
834 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
835 {
836 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
837 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
838 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
839 } else
840 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
841 {
842 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
843 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
844 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
845 } else
846 if (m_brush.GetStyle() == wxSTIPPLE)
847 {
848 gdk_gc_set_ts_origin( m_brushGC,
849 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
850 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
851 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
852 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
853 }
854 else
855 {
856 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
857 }
858 }
859
860 if (m_pen.GetStyle() != wxTRANSPARENT)
861 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
862 }
863
864 CalcBoundingBox( x, y );
865 CalcBoundingBox( x + width, y + height );
866 }
867
868 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
869 {
870 wxCHECK_RET( Ok(), wxT("invalid window dc") );
871
872 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
873
874 wxCoord xx = XLOG2DEV(x);
875 wxCoord yy = YLOG2DEV(y);
876 wxCoord ww = m_signX * XLOG2DEVREL(width);
877 wxCoord hh = m_signY * YLOG2DEVREL(height);
878 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
879
880 // CMB: handle -ve width and/or height
881 if (ww < 0) { ww = -ww; xx = xx - ww; }
882 if (hh < 0) { hh = -hh; yy = yy - hh; }
883
884 // CMB: if radius is zero use DrawRectangle() instead to avoid
885 // X drawing errors with small radii
886 if (rr == 0)
887 {
888 DrawRectangle( x, y, width, height );
889 return;
890 }
891
892 // CMB: draw nothing if transformed w or h is 0
893 if (ww == 0 || hh == 0) return;
894
895 // CMB: adjust size if outline is drawn otherwise the result is
896 // 1 pixel too wide and high
897 if (m_pen.GetStyle() != wxTRANSPARENT)
898 {
899 ww--;
900 hh--;
901 }
902
903 if (m_window)
904 {
905 // CMB: ensure dd is not larger than rectangle otherwise we
906 // get an hour glass shape
907 wxCoord dd = 2 * rr;
908 if (dd > ww) dd = ww;
909 if (dd > hh) dd = hh;
910 rr = dd / 2;
911
912 if (m_brush.GetStyle() != wxTRANSPARENT)
913 {
914 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
915 {
916 gdk_gc_set_ts_origin( m_textGC,
917 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
918 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
919 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
920 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
921 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
922 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
923 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
924 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
925 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
926 } else
927 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
928 {
929 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
930 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
931 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
932 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
933 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
934 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
935 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
936 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
937 } else
938 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
939 {
940 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
941 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
947 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
948 } else
949 if (m_brush.GetStyle() == wxSTIPPLE)
950 {
951 gdk_gc_set_ts_origin( m_brushGC,
952 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
953 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
954 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
955 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
959 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
960 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
961 }
962 else
963 {
964 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
965 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
966 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
967 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
970 }
971 }
972
973 if (m_pen.GetStyle() != wxTRANSPARENT)
974 {
975 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
976 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
977 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
978 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
979 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
980 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
981 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
982 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
983 }
984 }
985
986 // this ignores the radius
987 CalcBoundingBox( x, y );
988 CalcBoundingBox( x + width, y + height );
989 }
990
991 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
992 {
993 wxCHECK_RET( Ok(), wxT("invalid window dc") );
994
995 wxCoord xx = XLOG2DEV(x);
996 wxCoord yy = YLOG2DEV(y);
997 wxCoord ww = m_signX * XLOG2DEVREL(width);
998 wxCoord hh = m_signY * YLOG2DEVREL(height);
999
1000 // CMB: handle -ve width and/or height
1001 if (ww < 0) { ww = -ww; xx = xx - ww; }
1002 if (hh < 0) { hh = -hh; yy = yy - hh; }
1003
1004 if (m_window)
1005 {
1006 if (m_brush.GetStyle() != wxTRANSPARENT)
1007 {
1008 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1009 {
1010 gdk_gc_set_ts_origin( m_textGC,
1011 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1012 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1013 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1014 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1015 } else
1016 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1017 {
1018 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1019 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1020 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1021 } else
1022 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1023 {
1024 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1025 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1026 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1027 } else
1028 if (m_brush.GetStyle() == wxSTIPPLE)
1029 {
1030 gdk_gc_set_ts_origin( m_brushGC,
1031 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1032 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
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 }
1036 else
1037 {
1038 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1039 }
1040 }
1041
1042 if (m_pen.GetStyle() != wxTRANSPARENT)
1043 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1044 }
1045
1046 CalcBoundingBox( x, y );
1047 CalcBoundingBox( x + width, y + height );
1048 }
1049
1050 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1051 {
1052 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1053 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1054 }
1055
1056 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1057 wxCoord x, wxCoord y,
1058 bool useMask )
1059 {
1060 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1061
1062 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1063
1064 bool is_mono = (bitmap.GetBitmap() != NULL);
1065
1066 // scale/translate size and position
1067 int xx = XLOG2DEV(x);
1068 int yy = YLOG2DEV(y);
1069
1070 int w = bitmap.GetWidth();
1071 int h = bitmap.GetHeight();
1072
1073 CalcBoundingBox( x, y );
1074 CalcBoundingBox( x + w, y + h );
1075
1076 if (!m_window) return;
1077
1078 int ww = XLOG2DEVREL(w);
1079 int hh = YLOG2DEVREL(h);
1080
1081 // compare to current clipping region
1082 if (!m_currentClippingRegion.IsNull())
1083 {
1084 wxRegion tmp( xx,yy,ww,hh );
1085 tmp.Intersect( m_currentClippingRegion );
1086 if (tmp.IsEmpty())
1087 return;
1088 }
1089
1090 // scale bitmap if required
1091 wxBitmap use_bitmap = bitmap;
1092 if ((w != ww) || (h != hh))
1093 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1094
1095 #if !GTK_CHECK_VERSION(2,2,0)
1096 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1097 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1098 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1099 // and also creates the mask as a side-effect:
1100 use_bitmap.GetPixmap();
1101 #endif
1102
1103 // apply mask if any
1104 GdkBitmap *mask = (GdkBitmap *) NULL;
1105 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1106
1107 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1108
1109 if (useMask && mask)
1110 {
1111 if (!m_currentClippingRegion.IsNull())
1112 {
1113 GdkColor col;
1114 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1115 GdkGC *gc = gdk_gc_new( new_mask );
1116 col.pixel = 0;
1117 gdk_gc_set_foreground( gc, &col );
1118 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1119 col.pixel = 0;
1120 gdk_gc_set_background( gc, &col );
1121 col.pixel = 1;
1122 gdk_gc_set_foreground( gc, &col );
1123 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1124 gdk_gc_set_clip_origin( gc, -xx, -yy );
1125 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1126 gdk_gc_set_stipple( gc, mask );
1127 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1128 gdk_gc_unref( gc );
1129 }
1130
1131 if (is_mono)
1132 {
1133 if (new_mask)
1134 gdk_gc_set_clip_mask( m_textGC, new_mask );
1135 else
1136 gdk_gc_set_clip_mask( m_textGC, mask );
1137 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1138 }
1139 else
1140 {
1141 if (new_mask)
1142 gdk_gc_set_clip_mask( m_penGC, new_mask );
1143 else
1144 gdk_gc_set_clip_mask( m_penGC, mask );
1145 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1146 }
1147 }
1148
1149 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1150 // drawing a mono-bitmap (XBitmap) we use the current text GC
1151 if (is_mono)
1152 {
1153 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1154 GdkGC *gc = gdk_gc_new( bitmap2 );
1155 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1156 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1157 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1158
1159 gdk_draw_drawable( m_window, m_textGC, bitmap2, 0, 0, xx, yy, -1, -1 );
1160
1161 gdk_bitmap_unref( bitmap2 );
1162 gdk_gc_unref( gc );
1163 }
1164 else
1165 {
1166 #if GTK_CHECK_VERSION(2,2,0)
1167 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1168 {
1169 gdk_draw_pixbuf(m_window, m_penGC,
1170 use_bitmap.GetPixbuf(),
1171 0, 0, xx, yy, -1, -1,
1172 GDK_RGB_DITHER_NORMAL, xx, yy);
1173 }
1174 else
1175 #endif
1176 {
1177 gdk_draw_pixmap(m_window, m_penGC,
1178 use_bitmap.GetPixmap(),
1179 0, 0, xx, yy, -1, -1);
1180 }
1181 }
1182
1183 // remove mask again if any
1184 if (useMask && mask)
1185 {
1186 if (is_mono)
1187 {
1188 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1189 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1190 if (!m_currentClippingRegion.IsNull())
1191 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1192 }
1193 else
1194 {
1195 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1196 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1197 if (!m_currentClippingRegion.IsNull())
1198 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1199 }
1200 }
1201
1202 if (new_mask)
1203 gdk_bitmap_unref( new_mask );
1204 }
1205
1206 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1207 wxCoord width, wxCoord height,
1208 wxDC *source,
1209 wxCoord xsrc, wxCoord ysrc,
1210 int logical_func,
1211 bool useMask,
1212 wxCoord xsrcMask, wxCoord ysrcMask )
1213 {
1214 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1215
1216 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1217
1218 if (!m_window) return false;
1219
1220 // transform the source DC coords to the device ones
1221 xsrc = source->XLOG2DEV(xsrc);
1222 ysrc = source->YLOG2DEV(ysrc);
1223
1224 wxClientDC *srcDC = (wxClientDC*)source;
1225 wxMemoryDC *memDC = (wxMemoryDC*)source;
1226
1227 bool use_bitmap_method = false;
1228 bool is_mono = false;
1229
1230 if (xsrcMask == -1 && ysrcMask == -1)
1231 {
1232 xsrcMask = xsrc;
1233 ysrcMask = ysrc;
1234 }
1235
1236 if (srcDC->m_isMemDC)
1237 {
1238 if (!memDC->m_selected.Ok()) return false;
1239
1240 is_mono = (memDC->m_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 && (memDC->m_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 == memDC->m_selected.GetWidth()) &&
1264 (height == memDC->m_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 else
1273 {
1274 use_bitmap_method = false;
1275 }
1276 }
1277
1278 CalcBoundingBox( xdest, ydest );
1279 CalcBoundingBox( xdest + width, ydest + height );
1280
1281 // scale/translate size and position
1282 wxCoord xx = XLOG2DEV(xdest);
1283 wxCoord yy = YLOG2DEV(ydest);
1284
1285 wxCoord ww = XLOG2DEVREL(width);
1286 wxCoord hh = YLOG2DEVREL(height);
1287
1288 // compare to current clipping region
1289 if (!m_currentClippingRegion.IsNull())
1290 {
1291 wxRegion tmp( xx,yy,ww,hh );
1292 tmp.Intersect( m_currentClippingRegion );
1293 if (tmp.IsEmpty())
1294 return true;
1295 }
1296
1297 int old_logical_func = m_logicalFunction;
1298 SetLogicalFunction( logical_func );
1299
1300 if (use_bitmap_method)
1301 {
1302 // scale/translate bitmap size
1303 wxCoord bm_width = memDC->m_selected.GetWidth();
1304 wxCoord bm_height = memDC->m_selected.GetHeight();
1305
1306 // Get clip coords for the bitmap. If we don't
1307 // use wxBitmap::Rescale(), which can clip the
1308 // bitmap, these are the same as the original
1309 // coordinates
1310 wxCoord cx = xx;
1311 wxCoord cy = yy;
1312 wxCoord cw = ww;
1313 wxCoord ch = hh;
1314
1315 // interpret userscale of src too
1316 double xsc,ysc;
1317 memDC->GetUserScale(&xsc,&ysc);
1318 bm_width = (int) (bm_width / xsc);
1319 bm_height = (int) (bm_height / ysc);
1320
1321 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1322 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1323
1324 // Scale bitmap if required
1325 wxBitmap use_bitmap;
1326 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1327 {
1328 // This indicates that the blitting code below will get
1329 // a clipped bitmap and therefore needs to move the origin
1330 // accordingly
1331 wxRegion tmp( xx,yy,ww,hh );
1332 tmp.Intersect( m_currentClippingRegion );
1333 tmp.GetBox(cx,cy,cw,ch);
1334
1335 // Scale and clipped bitmap
1336 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1337 }
1338 else
1339 {
1340 // Don't scale bitmap
1341 use_bitmap = memDC->m_selected;
1342 }
1343
1344 // apply mask if any
1345 GdkBitmap *mask = (GdkBitmap *) NULL;
1346 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1347
1348 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1349
1350 if (useMask && mask)
1351 {
1352 if (!m_currentClippingRegion.IsNull())
1353 {
1354 GdkColor col;
1355 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1356 GdkGC *gc = gdk_gc_new( new_mask );
1357 col.pixel = 0;
1358 gdk_gc_set_foreground( gc, &col );
1359 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1360 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1361 col.pixel = 0;
1362 gdk_gc_set_background( gc, &col );
1363 col.pixel = 1;
1364 gdk_gc_set_foreground( gc, &col );
1365 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1366 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1367 gdk_gc_set_clip_origin( gc, -cx, -cy );
1368 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1369 gdk_gc_set_stipple( gc, mask );
1370 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1371 gdk_gc_unref( gc );
1372 }
1373
1374 if (is_mono)
1375 {
1376 if (new_mask)
1377 {
1378 gdk_gc_set_clip_mask( m_textGC, new_mask );
1379 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1380 }
1381 else
1382 {
1383 gdk_gc_set_clip_mask( m_textGC, mask );
1384 gdk_gc_set_clip_origin( m_textGC, cx-xsrcMask, cy-ysrcMask );
1385 }
1386 }
1387 else
1388 {
1389 if (new_mask)
1390 {
1391 gdk_gc_set_clip_mask( m_penGC, new_mask );
1392 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1393 }
1394 else
1395 {
1396 gdk_gc_set_clip_mask( m_penGC, mask );
1397 gdk_gc_set_clip_origin( m_penGC, cx-xsrcMask, cy-ysrcMask );
1398 }
1399 }
1400 }
1401
1402 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1403 // drawing a mono-bitmap (XBitmap) we use the current text GC
1404
1405 if (is_mono)
1406 {
1407 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1408 GdkGC *gc = gdk_gc_new( bitmap );
1409 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1410 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1411 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1412
1413 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1414
1415 gdk_bitmap_unref( bitmap );
1416 gdk_gc_unref( gc );
1417 }
1418 else
1419 {
1420 // was: gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1421 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1422 }
1423
1424 // remove mask again if any
1425 if (useMask && mask)
1426 {
1427 if (is_mono)
1428 {
1429 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1430 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1431 if (!m_currentClippingRegion.IsNull())
1432 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1433 }
1434 else
1435 {
1436 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1437 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1438 if (!m_currentClippingRegion.IsNull())
1439 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1440 }
1441 }
1442
1443 if (new_mask)
1444 gdk_bitmap_unref( new_mask );
1445 }
1446 else // use_bitmap_method
1447 {
1448 if ((width != ww) || (height != hh))
1449 {
1450 // get clip coords
1451 wxRegion tmp( xx,yy,ww,hh );
1452 tmp.Intersect( m_currentClippingRegion );
1453 wxCoord cx,cy,cw,ch;
1454 tmp.GetBox(cx,cy,cw,ch);
1455
1456 // rescale bitmap
1457 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1458
1459 // draw scaled bitmap
1460 // was: gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1461 gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1462 }
1463 else
1464 {
1465 // No scaling and not a memory dc with a mask either
1466
1467 // copy including child window contents
1468 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1469 gdk_window_copy_area( m_window, m_penGC, xx, yy,
1470 srcDC->GetWindow(),
1471 xsrc, ysrc, width, height );
1472 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1473 }
1474 }
1475
1476 SetLogicalFunction( old_logical_func );
1477
1478 return true;
1479 }
1480
1481 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1482 {
1483 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1484
1485 if (!m_window) return;
1486
1487 if (text.empty()) return;
1488
1489 x = XLOG2DEV(x);
1490 y = YLOG2DEV(y);
1491
1492 wxCHECK_RET( m_context, wxT("no Pango context") );
1493 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1494 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1495
1496 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1497
1498 #if wxUSE_UNICODE
1499 const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
1500 #else
1501 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
1502 if ( !wdata )
1503 return;
1504 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1505 #endif
1506 size_t datalen = strlen((const char*)data);
1507 pango_layout_set_text( m_layout, (const char*) data, datalen);
1508
1509 if (underlined)
1510 {
1511 PangoAttrList *attrs = pango_attr_list_new();
1512 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1513 a->start_index = 0;
1514 a->end_index = datalen;
1515 pango_attr_list_insert(attrs, a);
1516 pango_layout_set_attributes(m_layout, attrs);
1517 pango_attr_list_unref(attrs);
1518 }
1519
1520 int w,h;
1521
1522 if (fabs(m_scaleY - 1.0) > 0.00001)
1523 {
1524 // If there is a user or actually any scale applied to
1525 // the device context, scale the font.
1526
1527 // scale font description
1528 gint oldSize = pango_font_description_get_size( m_fontdesc );
1529 double size = oldSize;
1530 size = size * m_scaleY;
1531 pango_font_description_set_size( m_fontdesc, (gint)size );
1532
1533 // actually apply scaled font
1534 pango_layout_set_font_description( m_layout, m_fontdesc );
1535
1536 pango_layout_get_pixel_size( m_layout, &w, &h );
1537 if ( m_backgroundMode == wxSOLID )
1538 {
1539 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1540 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1541 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1542 }
1543
1544 // Draw layout.
1545 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1546
1547 // reset unscaled size
1548 pango_font_description_set_size( m_fontdesc, oldSize );
1549
1550 // actually apply unscaled font
1551 pango_layout_set_font_description( m_layout, m_fontdesc );
1552 }
1553 else
1554 {
1555 pango_layout_get_pixel_size( m_layout, &w, &h );
1556 if ( m_backgroundMode == wxSOLID )
1557 {
1558 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1559 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1560 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1561 }
1562 // Draw layout.
1563 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1564 }
1565
1566 if (underlined)
1567 {
1568 // undo underline attributes setting:
1569 pango_layout_set_attributes(m_layout, NULL);
1570 }
1571
1572 wxCoord width = w;
1573 wxCoord height = h;
1574
1575 width = wxCoord(width / m_scaleX);
1576 height = wxCoord(height / m_scaleY);
1577 CalcBoundingBox (x + width, y + height);
1578 CalcBoundingBox (x, y);
1579 }
1580
1581
1582 // TODO: There is an example of rotating text with GTK2 that would probably be
1583 // a better approach here:
1584 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1585
1586 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1587 {
1588 if ( wxIsNullDouble(angle) )
1589 {
1590 DrawText(text, x, y);
1591 return;
1592 }
1593
1594 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1595
1596 if (!m_window) return;
1597
1598 wxCoord w;
1599 wxCoord h;
1600
1601 // TODO: implement later without GdkFont for GTK 2.0
1602 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1603
1604 // draw the string normally
1605 wxBitmap src(w, h);
1606 wxMemoryDC dc;
1607 dc.SelectObject(src);
1608 dc.SetFont(GetFont());
1609 dc.SetBackground(*wxBLACK_BRUSH);
1610 dc.SetBrush(*wxBLACK_BRUSH);
1611 dc.Clear();
1612 dc.SetTextForeground( *wxWHITE );
1613 dc.DrawText(text, 0, 0);
1614 dc.SelectObject(wxNullBitmap);
1615
1616 // Calculate the size of the rotated bounding box.
1617 double rad = DegToRad(angle);
1618 double dx = cos(rad),
1619 dy = sin(rad);
1620
1621 // the rectngle vertices are counted clockwise with the first one being at
1622 // (0, 0) (or, rather, at (x, y))
1623 double x2 = w*dx,
1624 y2 = -w*dy; // y axis points to the bottom, hence minus
1625 double x4 = h*dy,
1626 y4 = h*dx;
1627 double x3 = x4 + x2,
1628 y3 = y4 + y2;
1629
1630 // calc max and min
1631 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1632 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1633 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1634 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1635
1636
1637 wxImage image = src.ConvertToImage();
1638
1639 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1640 m_textForegroundColour.Green(),
1641 m_textForegroundColour.Blue() );
1642 image = image.Rotate( rad, wxPoint(0,0) );
1643
1644 int i_angle = (int) angle;
1645 i_angle = i_angle % 360;
1646 if (i_angle < 0)
1647 i_angle += 360;
1648 int xoffset = 0;
1649 if ((i_angle >= 90.0) && (i_angle < 270.0))
1650 xoffset = image.GetWidth();
1651 int yoffset = 0;
1652 if ((i_angle >= 0.0) && (i_angle < 180.0))
1653 yoffset = image.GetHeight();
1654
1655 if ((i_angle >= 0) && (i_angle < 90))
1656 yoffset -= (int)( cos(rad)*h );
1657 if ((i_angle >= 90) && (i_angle < 180))
1658 xoffset -= (int)( sin(rad)*h );
1659 if ((i_angle >= 180) && (i_angle < 270))
1660 yoffset -= (int)( cos(rad)*h );
1661 if ((i_angle >= 270) && (i_angle < 360))
1662 xoffset -= (int)( sin(rad)*h );
1663
1664 int i_x = x - xoffset;
1665 int i_y = y - yoffset;
1666
1667 src = image;
1668 DoDrawBitmap( src, i_x, i_y, true );
1669
1670
1671 // it would be better to draw with non underlined font and draw the line
1672 // manually here (it would be more straight...)
1673 #if 0
1674 if ( m_font.GetUnderlined() )
1675 {
1676 gdk_draw_line( m_window, m_textGC,
1677 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1678 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1679 }
1680 #endif // 0
1681
1682 // update the bounding box
1683 CalcBoundingBox(x + minX, y + minY);
1684 CalcBoundingBox(x + maxX, y + maxY);
1685 }
1686
1687 void wxWindowDC::DoGetTextExtent(const wxString &string,
1688 wxCoord *width, wxCoord *height,
1689 wxCoord *descent, wxCoord *externalLeading,
1690 wxFont *theFont) const
1691 {
1692 if ( width )
1693 *width = 0;
1694 if ( height )
1695 *height = 0;
1696 if ( descent )
1697 *descent = 0;
1698 if ( externalLeading )
1699 *externalLeading = 0;
1700
1701 if (string.empty())
1702 {
1703 return;
1704 }
1705
1706 // Set new font description
1707 if (theFont)
1708 pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );
1709
1710 // Set layout's text
1711 #if wxUSE_UNICODE
1712 const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
1713 const char *dataUTF8 = (const char *)data;
1714 #else
1715 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
1716 if ( !wdata )
1717 return;
1718
1719 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1720 const char *dataUTF8 = (const char *)data;
1721 #endif
1722
1723 if ( !dataUTF8 )
1724 {
1725 // hardly ideal, but what else can we do if conversion failed?
1726 return;
1727 }
1728
1729 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1730
1731 if (descent)
1732 {
1733 int h;
1734 pango_layout_get_pixel_size( m_layout, width, &h );
1735 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1736 int baseline = pango_layout_iter_get_baseline(iter);
1737 pango_layout_iter_free(iter);
1738 *descent = h - PANGO_PIXELS(baseline);
1739
1740 if (height)
1741 *height = (wxCoord) h;
1742 }
1743 else
1744 {
1745 pango_layout_get_pixel_size( m_layout, width, height );
1746 }
1747
1748 // Reset old font description
1749 if (theFont)
1750 pango_layout_set_font_description( m_layout, m_fontdesc );
1751 }
1752
1753 wxCoord wxWindowDC::GetCharWidth() const
1754 {
1755 pango_layout_set_text( m_layout, "H", 1 );
1756 int w;
1757 pango_layout_get_pixel_size( m_layout, &w, NULL );
1758 return w;
1759 }
1760
1761 wxCoord wxWindowDC::GetCharHeight() const
1762 {
1763 pango_layout_set_text( m_layout, "H", 1 );
1764 int h;
1765 pango_layout_get_pixel_size( m_layout, NULL, &h );
1766 return h;
1767 }
1768
1769 void wxWindowDC::Clear()
1770 {
1771 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1772
1773 if (!m_window) return;
1774
1775 // VZ: the code below results in infinite recursion and crashes when
1776 // dc.Clear() is done from OnPaint() so I disable it for now.
1777 // I don't know what the correct fix is but Clear() surely should not
1778 // reenter OnPaint()!
1779 #if 0
1780 /* - we either are a memory dc or have a window as the
1781 owner. anything else shouldn't happen.
1782 - we don't use gdk_window_clear() as we don't set
1783 the window's background colour anymore. it is too
1784 much pain to keep the DC's and the window's back-
1785 ground colour in synch. */
1786
1787 if (m_owner)
1788 {
1789 m_owner->Clear();
1790 return;
1791 }
1792
1793 if (m_isMemDC)
1794 {
1795 int width,height;
1796 GetSize( &width, &height );
1797 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1798 return;
1799 }
1800 #else // 1
1801 int width,height;
1802 GetSize( &width, &height );
1803 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1804 #endif // 0/1
1805 }
1806
1807 void wxWindowDC::SetFont( const wxFont &font )
1808 {
1809 m_font = font;
1810
1811 if (m_font.Ok())
1812 {
1813 if (m_fontdesc)
1814 pango_font_description_free( m_fontdesc );
1815
1816 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1817
1818
1819 if (m_owner)
1820 {
1821 PangoContext *oldContext = m_context;
1822
1823 m_context = m_owner->GtkGetPangoDefaultContext();
1824
1825 // If we switch back/forth between different contexts
1826 // we also have to create a new layout. I think so,
1827 // at least, and it doesn't hurt to do it.
1828 if (oldContext != m_context)
1829 {
1830 if (m_layout)
1831 g_object_unref( G_OBJECT( m_layout ) );
1832
1833 m_layout = pango_layout_new( m_context );
1834 }
1835 }
1836
1837 pango_layout_set_font_description( m_layout, m_fontdesc );
1838 }
1839 }
1840
1841 void wxWindowDC::SetPen( const wxPen &pen )
1842 {
1843 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1844
1845 if (m_pen == pen) return;
1846
1847 m_pen = pen;
1848
1849 if (!m_pen.Ok()) return;
1850
1851 if (!m_window) return;
1852
1853 gint width = m_pen.GetWidth();
1854 if (width <= 0)
1855 {
1856 // CMB: if width is non-zero scale it with the dc
1857 width = 1;
1858 }
1859 else
1860 {
1861 // X doesn't allow different width in x and y and so we take
1862 // the average
1863 double w = 0.5 +
1864 ( fabs((double) XLOG2DEVREL(width)) +
1865 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1866 width = (int)w;
1867 if ( !width )
1868 {
1869 // width can't be 0 or an internal GTK error occurs inside
1870 // gdk_gc_set_dashes() below
1871 width = 1;
1872 }
1873 }
1874
1875 static const wxGTKDash dotted[] = {1, 1};
1876 static const wxGTKDash short_dashed[] = {2, 2};
1877 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1878 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1879
1880 // We express dash pattern in pen width unit, so we are
1881 // independent of zoom factor and so on...
1882 int req_nb_dash;
1883 const wxGTKDash *req_dash;
1884
1885 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1886 switch (m_pen.GetStyle())
1887 {
1888 case wxUSER_DASH:
1889 {
1890 lineStyle = GDK_LINE_ON_OFF_DASH;
1891 req_nb_dash = m_pen.GetDashCount();
1892 req_dash = (wxGTKDash*)m_pen.GetDash();
1893 break;
1894 }
1895 case wxDOT:
1896 {
1897 lineStyle = GDK_LINE_ON_OFF_DASH;
1898 req_nb_dash = 2;
1899 req_dash = dotted;
1900 break;
1901 }
1902 case wxLONG_DASH:
1903 {
1904 lineStyle = GDK_LINE_ON_OFF_DASH;
1905 req_nb_dash = 2;
1906 req_dash = wxCoord_dashed;
1907 break;
1908 }
1909 case wxSHORT_DASH:
1910 {
1911 lineStyle = GDK_LINE_ON_OFF_DASH;
1912 req_nb_dash = 2;
1913 req_dash = short_dashed;
1914 break;
1915 }
1916 case wxDOT_DASH:
1917 {
1918 // lineStyle = GDK_LINE_DOUBLE_DASH;
1919 lineStyle = GDK_LINE_ON_OFF_DASH;
1920 req_nb_dash = 4;
1921 req_dash = dotted_dashed;
1922 break;
1923 }
1924
1925 case wxTRANSPARENT:
1926 case wxSTIPPLE_MASK_OPAQUE:
1927 case wxSTIPPLE:
1928 case wxSOLID:
1929 default:
1930 {
1931 lineStyle = GDK_LINE_SOLID;
1932 req_dash = (wxGTKDash*)NULL;
1933 req_nb_dash = 0;
1934 break;
1935 }
1936 }
1937
1938 if (req_dash && req_nb_dash)
1939 {
1940 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1941 if (real_req_dash)
1942 {
1943 for (int i = 0; i < req_nb_dash; i++)
1944 real_req_dash[i] = req_dash[i] * width;
1945 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1946 delete[] real_req_dash;
1947 }
1948 else
1949 {
1950 // No Memory. We use non-scaled dash pattern...
1951 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1952 }
1953 }
1954
1955 GdkCapStyle capStyle = GDK_CAP_ROUND;
1956 switch (m_pen.GetCap())
1957 {
1958 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1959 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1960 case wxCAP_ROUND:
1961 default:
1962 {
1963 if (width <= 1)
1964 {
1965 width = 0;
1966 capStyle = GDK_CAP_NOT_LAST;
1967 }
1968 else
1969 {
1970 capStyle = GDK_CAP_ROUND;
1971 }
1972 break;
1973 }
1974 }
1975
1976 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1977 switch (m_pen.GetJoin())
1978 {
1979 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1980 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1981 case wxJOIN_ROUND:
1982 default: { joinStyle = GDK_JOIN_ROUND; break; }
1983 }
1984
1985 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1986
1987 m_pen.GetColour().CalcPixel( m_cmap );
1988 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1989 }
1990
1991 void wxWindowDC::SetBrush( const wxBrush &brush )
1992 {
1993 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1994
1995 if (m_brush == brush) return;
1996
1997 m_brush = brush;
1998
1999 if (!m_brush.Ok()) return;
2000
2001 if (!m_window) return;
2002
2003 m_brush.GetColour().CalcPixel( m_cmap );
2004 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2005
2006 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2007
2008 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2009 {
2010 if (m_brush.GetStipple()->GetPixmap())
2011 {
2012 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2013 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2014 }
2015 else
2016 {
2017 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2018 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetBitmap() );
2019 }
2020 }
2021
2022 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2023 {
2024 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2025 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2026 }
2027
2028 if (m_brush.IsHatch())
2029 {
2030 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2031 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2032 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2033 }
2034 }
2035
2036 void wxWindowDC::SetBackground( const wxBrush &brush )
2037 {
2038 /* CMB 21/7/98: Added SetBackground. Sets background brush
2039 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2040
2041 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2042
2043 if (m_backgroundBrush == brush) return;
2044
2045 m_backgroundBrush = brush;
2046
2047 if (!m_backgroundBrush.Ok()) return;
2048
2049 if (!m_window) return;
2050
2051 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2052 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2053 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2054 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2055 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2056
2057 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2058
2059 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2060 {
2061 if (m_backgroundBrush.GetStipple()->GetPixmap())
2062 {
2063 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2064 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2065 }
2066 else
2067 {
2068 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2069 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetBitmap() );
2070 }
2071 }
2072
2073 if (m_backgroundBrush.IsHatch())
2074 {
2075 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2076 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2077 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2078 }
2079 }
2080
2081 void wxWindowDC::SetLogicalFunction( int function )
2082 {
2083 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2084
2085 if (m_logicalFunction == function)
2086 return;
2087
2088 // VZ: shouldn't this be a CHECK?
2089 if (!m_window)
2090 return;
2091
2092 GdkFunction mode;
2093 switch (function)
2094 {
2095 case wxXOR: mode = GDK_XOR; break;
2096 case wxINVERT: mode = GDK_INVERT; break;
2097 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2098 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2099 case wxCLEAR: mode = GDK_CLEAR; break;
2100 case wxSET: mode = GDK_SET; break;
2101 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2102 case wxAND: mode = GDK_AND; break;
2103 case wxOR: mode = GDK_OR; break;
2104 case wxEQUIV: mode = GDK_EQUIV; break;
2105 case wxNAND: mode = GDK_NAND; break;
2106 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2107 case wxCOPY: mode = GDK_COPY; break;
2108 case wxNO_OP: mode = GDK_NOOP; break;
2109 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2110
2111 // unsupported by GTK
2112 case wxNOR: mode = GDK_COPY; break;
2113 default:
2114 wxFAIL_MSG( wxT("unsupported logical function") );
2115 mode = GDK_COPY;
2116 }
2117
2118 m_logicalFunction = function;
2119
2120 gdk_gc_set_function( m_penGC, mode );
2121 gdk_gc_set_function( m_brushGC, mode );
2122
2123 // to stay compatible with wxMSW, we don't apply ROPs to the text
2124 // operations (i.e. DrawText/DrawRotatedText).
2125 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2126 gdk_gc_set_function( m_textGC, mode );
2127 }
2128
2129 void wxWindowDC::SetTextForeground( const wxColour &col )
2130 {
2131 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2132
2133 // don't set m_textForegroundColour to an invalid colour as we'd crash
2134 // later then (we use m_textForegroundColour.GetColor() without checking
2135 // in a few places)
2136 if ( !col.Ok() || (m_textForegroundColour == col) )
2137 return;
2138
2139 m_textForegroundColour = col;
2140
2141 if ( m_window )
2142 {
2143 m_textForegroundColour.CalcPixel( m_cmap );
2144 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2145 }
2146 }
2147
2148 void wxWindowDC::SetTextBackground( const wxColour &col )
2149 {
2150 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2151
2152 // same as above
2153 if ( !col.Ok() || (m_textBackgroundColour == col) )
2154 return;
2155
2156 m_textBackgroundColour = col;
2157
2158 if ( m_window )
2159 {
2160 m_textBackgroundColour.CalcPixel( m_cmap );
2161 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2162 }
2163 }
2164
2165 void wxWindowDC::SetBackgroundMode( int mode )
2166 {
2167 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2168
2169 m_backgroundMode = mode;
2170
2171 if (!m_window) return;
2172
2173 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2174 // transparent/solid background mode
2175
2176 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2177 {
2178 gdk_gc_set_fill( m_brushGC,
2179 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2180 }
2181 }
2182
2183 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2184 {
2185 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2186 }
2187
2188 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2189 {
2190 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2191
2192 if (!m_window) return;
2193
2194 wxRect rect;
2195 rect.x = XLOG2DEV(x);
2196 rect.y = YLOG2DEV(y);
2197 rect.width = XLOG2DEVREL(width);
2198 rect.height = YLOG2DEVREL(height);
2199
2200 if (!m_currentClippingRegion.IsNull())
2201 m_currentClippingRegion.Intersect( rect );
2202 else
2203 m_currentClippingRegion.Union( rect );
2204
2205 #if USE_PAINT_REGION
2206 if (!m_paintClippingRegion.IsNull())
2207 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2208 #endif
2209
2210 wxCoord xx, yy, ww, hh;
2211 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2212 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2213
2214 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2215 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2216 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2217 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2218 }
2219
2220 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2221 {
2222 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2223
2224 if (region.Empty())
2225 {
2226 DestroyClippingRegion();
2227 return;
2228 }
2229
2230 if (!m_window) return;
2231
2232 if (!m_currentClippingRegion.IsNull())
2233 m_currentClippingRegion.Intersect( region );
2234 else
2235 m_currentClippingRegion.Union( region );
2236
2237 #if USE_PAINT_REGION
2238 if (!m_paintClippingRegion.IsNull())
2239 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2240 #endif
2241
2242 wxCoord xx, yy, ww, hh;
2243 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2244 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2245
2246 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2247 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2248 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2249 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2250 }
2251
2252 void wxWindowDC::DestroyClippingRegion()
2253 {
2254 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2255
2256 wxDC::DestroyClippingRegion();
2257
2258 m_currentClippingRegion.Clear();
2259
2260 #if USE_PAINT_REGION
2261 if (!m_paintClippingRegion.IsEmpty())
2262 m_currentClippingRegion.Union( m_paintClippingRegion );
2263 #endif
2264
2265 if (!m_window) return;
2266
2267 if (m_currentClippingRegion.IsEmpty())
2268 {
2269 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2270 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2271 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2272 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2273 }
2274 else
2275 {
2276 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2277 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2278 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2279 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2280 }
2281 }
2282
2283 void wxWindowDC::Destroy()
2284 {
2285 if (m_penGC) wxFreePoolGC( m_penGC );
2286 m_penGC = (GdkGC*) NULL;
2287 if (m_brushGC) wxFreePoolGC( m_brushGC );
2288 m_brushGC = (GdkGC*) NULL;
2289 if (m_textGC) wxFreePoolGC( m_textGC );
2290 m_textGC = (GdkGC*) NULL;
2291 if (m_bgGC) wxFreePoolGC( m_bgGC );
2292 m_bgGC = (GdkGC*) NULL;
2293 }
2294
2295 void wxWindowDC::ComputeScaleAndOrigin()
2296 {
2297 const wxRealPoint origScale(m_scaleX, m_scaleY);
2298
2299 wxDC::ComputeScaleAndOrigin();
2300
2301 // if scale has changed call SetPen to recalulate the line width
2302 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2303 {
2304 // this is a bit artificial, but we need to force wxDC to think the pen
2305 // has changed
2306 wxPen pen = m_pen;
2307 m_pen = wxNullPen;
2308 SetPen( pen );
2309 }
2310 }
2311
2312 // Resolution in pixels per logical inch
2313 wxSize wxWindowDC::GetPPI() const
2314 {
2315 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2316 }
2317
2318 int wxWindowDC::GetDepth() const
2319 {
2320 return gdk_drawable_get_depth(m_window);
2321 }
2322
2323
2324 //-----------------------------------------------------------------------------
2325 // wxPaintDC
2326 //-----------------------------------------------------------------------------
2327
2328 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2329
2330 // Limit the paint region to the window size. Sometimes
2331 // the paint region is too big, and this risks X11 errors
2332 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2333 {
2334 wxRect originalRect = region.GetBox();
2335 wxRect rect(originalRect);
2336 if (rect.width + rect.x > sz.x)
2337 rect.width = sz.x - rect.x;
2338 if (rect.height + rect.y > sz.y)
2339 rect.height = sz.y - rect.y;
2340 if (rect != originalRect)
2341 {
2342 region = wxRegion(rect);
2343 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2344 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2345 rect.x, rect.y, rect.width, rect.height);
2346 }
2347 }
2348
2349 wxPaintDC::wxPaintDC( wxWindow *win )
2350 : wxClientDC( win )
2351 {
2352 #if USE_PAINT_REGION
2353 if (!win->m_clipPaintRegion)
2354 return;
2355
2356 wxSize sz = win->GetSize();
2357 m_paintClippingRegion = win->GetUpdateRegion();
2358 wxLimitRegionToSize(m_paintClippingRegion, sz);
2359
2360 GdkRegion *region = m_paintClippingRegion.GetRegion();
2361 if ( region )
2362 {
2363 m_currentClippingRegion.Union( m_paintClippingRegion );
2364 wxLimitRegionToSize(m_currentClippingRegion, sz);
2365
2366 if (sz.x <= 0 || sz.y <= 0)
2367 return ;
2368
2369 gdk_gc_set_clip_region( m_penGC, region );
2370 gdk_gc_set_clip_region( m_brushGC, region );
2371 gdk_gc_set_clip_region( m_textGC, region );
2372 gdk_gc_set_clip_region( m_bgGC, region );
2373 }
2374 #endif // USE_PAINT_REGION
2375 }
2376
2377 //-----------------------------------------------------------------------------
2378 // wxClientDC
2379 //-----------------------------------------------------------------------------
2380
2381 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2382
2383 wxClientDC::wxClientDC( wxWindow *win )
2384 : wxWindowDC( win )
2385 {
2386 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2387
2388 #ifdef __WXUNIVERSAL__
2389 wxPoint ptOrigin = win->GetClientAreaOrigin();
2390 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2391 wxSize size = win->GetClientSize();
2392 SetClippingRegion(wxPoint(0, 0), size);
2393 #endif // __WXUNIVERSAL__
2394 }
2395
2396 void wxClientDC::DoGetSize(int *width, int *height) const
2397 {
2398 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2399
2400 m_owner->GetClientSize( width, height );
2401 }
2402
2403 // ----------------------------------------------------------------------------
2404 // wxDCModule
2405 // ----------------------------------------------------------------------------
2406
2407 class wxDCModule : public wxModule
2408 {
2409 public:
2410 bool OnInit();
2411 void OnExit();
2412
2413 private:
2414 DECLARE_DYNAMIC_CLASS(wxDCModule)
2415 };
2416
2417 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2418
2419 bool wxDCModule::OnInit()
2420 {
2421 wxInitGCPool();
2422 return true;
2423 }
2424
2425 void wxDCModule::OnExit()
2426 {
2427 wxCleanUpGCPool();
2428 }
wxWidgets (Impactor)