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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/log.h"
21 #include "wx/dcmemory.h"
22 #include "wx/math.h" // for floating-point functions
23 #include "wx/image.h"
24 #endif
25
26 #include "wx/module.h"
27 #include "wx/fontutil.h"
28
29 #include "wx/gtk/win_gtk.h"
30 #include "wx/gtk/private.h"
31
32 #include <gdk/gdk.h>
33 #include <gdk/gdkx.h>
34 #include <gdk/gdkprivate.h>
35 #include <gtk/gtk.h>
36
37 //-----------------------------------------------------------------------------
38 // local defines
39 //-----------------------------------------------------------------------------
40
41 #define USE_PAINT_REGION 1
42
43 //-----------------------------------------------------------------------------
44 // local data
45 //-----------------------------------------------------------------------------
46
47 #include "bdiag.xbm"
48 #include "fdiag.xbm"
49 #include "cdiag.xbm"
50 #include "horiz.xbm"
51 #include "verti.xbm"
52 #include "cross.xbm"
53 #define num_hatches 6
54
55 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
56 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
57
58
59 static GdkPixmap *hatches[num_hatches];
60 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
61
62 extern GtkWidget *wxGetRootWindow();
63
64 //-----------------------------------------------------------------------------
65 // constants
66 //-----------------------------------------------------------------------------
67
68 const double RAD2DEG = 180.0 / M_PI;
69
70 // ----------------------------------------------------------------------------
71 // private functions
72 // ----------------------------------------------------------------------------
73
74 static inline double dmax(double a, double b) { return a > b ? a : b; }
75 static inline double dmin(double a, double b) { return a < b ? a : b; }
76
77 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
78
79 //-----------------------------------------------------------------------------
80 // temporary implementation of the missing GDK function
81 //-----------------------------------------------------------------------------
82
83 #include "gdk/gdkprivate.h"
84
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
329 wxWindowDC::~wxWindowDC()
330 {
331 Destroy();
332
333 if (m_layout)
334 g_object_unref (m_layout);
335 if (m_fontdesc)
336 pango_font_description_free( m_fontdesc );
337 }
338
339 void wxWindowDC::SetUpDC()
340 {
341 m_ok = true;
342
343 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
344
345 if (m_isScreenDC)
346 {
347 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
348 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
349 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
350 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
351 }
352 else
353 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
354 {
355 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
356 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
357 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
358 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
359 }
360 else
361 {
362 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
363 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
364 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
365 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
366 }
367
368 /* background colour */
369 m_backgroundBrush = *wxWHITE_BRUSH;
370 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
371 #ifdef __WXGTK24__
372 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
373 #else
374 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
375 #endif
376
377 /* m_textGC */
378 m_textForegroundColour.CalcPixel( m_cmap );
379 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
380
381 m_textBackgroundColour.CalcPixel( m_cmap );
382 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
383
384 gdk_gc_set_fill( m_textGC, GDK_SOLID );
385
386 /* m_penGC */
387 m_pen.GetColour().CalcPixel( m_cmap );
388 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
389 gdk_gc_set_background( m_penGC, bg_col );
390
391 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
392
393 /* m_brushGC */
394 m_brush.GetColour().CalcPixel( m_cmap );
395 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
396 gdk_gc_set_background( m_brushGC, bg_col );
397
398 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
399
400 /* m_bgGC */
401 gdk_gc_set_background( m_bgGC, bg_col );
402 gdk_gc_set_foreground( m_bgGC, bg_col );
403
404 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
405
406 /* ROPs */
407 gdk_gc_set_function( m_textGC, GDK_COPY );
408 gdk_gc_set_function( m_brushGC, GDK_COPY );
409 gdk_gc_set_function( m_penGC, GDK_COPY );
410
411 /* clipping */
412 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
413 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
414 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
415 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
416
417 if (!hatch_bitmap)
418 {
419 hatch_bitmap = hatches;
420 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
421 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
422 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
423 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
424 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
425 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
426 }
427 }
428
429 void wxWindowDC::DoGetSize( int* width, int* height ) const
430 {
431 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
432
433 m_owner->GetSize(width, height);
434 }
435
436 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
437 const wxColour & col, int style);
438
439 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
440 const wxColour& col, int style)
441 {
442 return wxDoFloodFill(this, x, y, col, style);
443 }
444
445 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
446 {
447 // Generic (and therefore rather inefficient) method.
448 // Could be improved.
449 wxMemoryDC memdc;
450 wxBitmap bitmap(1, 1);
451 memdc.SelectObject(bitmap);
452 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
453 memdc.SelectObject(wxNullBitmap);
454
455 wxImage image = bitmap.ConvertToImage();
456 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
457 return true;
458 }
459
460 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
461 {
462 wxCHECK_RET( Ok(), wxT("invalid window dc") );
463
464 if (m_pen.GetStyle() != wxTRANSPARENT)
465 {
466 if (m_window)
467 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
468
469 CalcBoundingBox(x1, y1);
470 CalcBoundingBox(x2, y2);
471 }
472 }
473
474 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
475 {
476 wxCHECK_RET( Ok(), wxT("invalid window dc") );
477
478 if (m_pen.GetStyle() != wxTRANSPARENT)
479 {
480 int w = 0;
481 int h = 0;
482 GetSize( &w, &h );
483 wxCoord xx = XLOG2DEV(x);
484 wxCoord yy = YLOG2DEV(y);
485 if (m_window)
486 {
487 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
488 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
489 }
490 }
491 }
492
493 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
494 wxCoord xc, wxCoord yc )
495 {
496 wxCHECK_RET( Ok(), wxT("invalid window dc") );
497
498 wxCoord xx1 = XLOG2DEV(x1);
499 wxCoord yy1 = YLOG2DEV(y1);
500 wxCoord xx2 = XLOG2DEV(x2);
501 wxCoord yy2 = YLOG2DEV(y2);
502 wxCoord xxc = XLOG2DEV(xc);
503 wxCoord yyc = YLOG2DEV(yc);
504 double dx = xx1 - xxc;
505 double dy = yy1 - yyc;
506 double radius = sqrt((double)(dx*dx+dy*dy));
507 wxCoord r = (wxCoord)radius;
508 double radius1, radius2;
509
510 if (xx1 == xx2 && yy1 == yy2)
511 {
512 radius1 = 0.0;
513 radius2 = 360.0;
514 }
515 else if ( wxIsNullDouble(radius) )
516 {
517 radius1 =
518 radius2 = 0.0;
519 }
520 else
521 {
522 radius1 = (xx1 - xxc == 0) ?
523 (yy1 - yyc < 0) ? 90.0 : -90.0 :
524 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
525 radius2 = (xx2 - xxc == 0) ?
526 (yy2 - yyc < 0) ? 90.0 : -90.0 :
527 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
528 }
529 wxCoord alpha1 = wxCoord(radius1 * 64.0);
530 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
531 while (alpha2 <= 0) alpha2 += 360*64;
532 while (alpha1 > 360*64) alpha1 -= 360*64;
533
534 if (m_window)
535 {
536 if (m_brush.GetStyle() != wxTRANSPARENT)
537 {
538 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
539 {
540 gdk_gc_set_ts_origin( m_textGC,
541 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
542 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
543 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
544 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
545 } else
546 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
547 {
548 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
549 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
550 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
551 } else
552 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
553 {
554 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
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 } else
558 if (m_brush.GetStyle() == wxSTIPPLE)
559 {
560 gdk_gc_set_ts_origin( m_brushGC,
561 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
562 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
563 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
564 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
565 }
566 else
567 {
568 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
569 }
570 }
571
572 if (m_pen.GetStyle() != wxTRANSPARENT)
573 {
574 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
575
576 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
577 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
578 }
579 }
580
581 CalcBoundingBox (x1, y1);
582 CalcBoundingBox (x2, y2);
583 }
584
585 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
586 {
587 wxCHECK_RET( Ok(), wxT("invalid window dc") );
588
589 wxCoord xx = XLOG2DEV(x);
590 wxCoord yy = YLOG2DEV(y);
591 wxCoord ww = m_signX * XLOG2DEVREL(width);
592 wxCoord hh = m_signY * YLOG2DEVREL(height);
593
594 // CMB: handle -ve width and/or height
595 if (ww < 0) { ww = -ww; xx = xx - ww; }
596 if (hh < 0) { hh = -hh; yy = yy - hh; }
597
598 if (m_window)
599 {
600 wxCoord start = wxCoord(sa * 64.0);
601 wxCoord end = wxCoord((ea-sa) * 64.0);
602
603 if (m_brush.GetStyle() != wxTRANSPARENT)
604 {
605 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
606 {
607 gdk_gc_set_ts_origin( m_textGC,
608 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
609 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
610 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
611 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
612 } else
613 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
614 {
615 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
616 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
617 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
618 } else
619 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
620 {
621 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
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 } else
625 if (m_brush.GetStyle() == wxSTIPPLE)
626 {
627 gdk_gc_set_ts_origin( m_brushGC,
628 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
629 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
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 }
633 else
634 {
635 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
636 }
637 }
638
639 if (m_pen.GetStyle() != wxTRANSPARENT)
640 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
641 }
642
643 CalcBoundingBox (x, y);
644 CalcBoundingBox (x + width, y + height);
645 }
646
647 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
648 {
649 wxCHECK_RET( Ok(), wxT("invalid window dc") );
650
651 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
652 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
653
654 CalcBoundingBox (x, y);
655 }
656
657 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
658 {
659 wxCHECK_RET( Ok(), wxT("invalid window dc") );
660
661 if (m_pen.GetStyle() == wxTRANSPARENT) return;
662 if (n <= 0) return;
663
664 //Check, if scaling is necessary
665 bool doScale(true);
666 long val(10);
667 if (!xoffset)
668 if (!yoffset)
669 if (XLOG2DEV(val)==val)
670 if (YLOG2DEV(val)==val)
671 doScale = false;
672
673 GdkPoint *gpts = NULL;
674
675 if (doScale){
676 gpts = new GdkPoint[n];
677 if (! gpts)
678 {
679 wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
680 return;
681 }
682
683 for (int i = 0; i < n; i++)
684 {
685 wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
686 wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
687
688 CalcBoundingBox( x1 + xoffset, y1 + yoffset );
689
690 gpts[i].x = x1;
691 gpts[i].y = y1;
692 }
693 }
694 else {
695 for (int i = 0; i < n; i++) {
696 CalcBoundingBox( points[i].x, points[i].y );
697 }
698
699 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
700 gpts = reinterpret_cast<GdkPoint*>(points);
701 }
702
703 if (m_window)
704 gdk_draw_lines( m_window, m_penGC, gpts, n);
705
706 if (doScale)
707 delete[] gpts;
708 }
709
710 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
711 {
712 wxCHECK_RET( Ok(), wxT("invalid window dc") );
713
714 if (n <= 0) return;
715
716 //Check, if scaling is necessary
717 bool doScale(true);
718 long val(10);
719 if (!xoffset)
720 if (!yoffset)
721 if (XLOG2DEV(val)==val)
722 if (YLOG2DEV(val)==val){
723 doScale = false;
724 }
725
726 GdkPoint *gdkpoints = NULL;
727
728 if (doScale){
729 gdkpoints = new GdkPoint[n+1]; //FIXME: Why the "+1"
730
731 int i;
732 for (i = 0 ; i < n ; i++)
733 {
734 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
735 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
736
737 CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset );
738 }
739 }
740 else {
741 int i(0);
742 for (; i < n ; ++i) {
743 CalcBoundingBox( points[i].x, points[i].y );
744 }
745 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
746 gdkpoints = reinterpret_cast<GdkPoint*> (points);
747 }
748
749 if (m_window)
750 {
751 //I think wxSOLID is the most often used style (it is for me),
752 //so I put it in front of the if ... ifelse's
753 if (m_brush.GetStyle() == wxSOLID)
754 {
755 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
756 }else
757 if (m_brush.GetStyle() != wxTRANSPARENT)
758 {
759 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
760 {
761 gdk_gc_set_ts_origin( m_textGC,
762 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
763 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
764 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
765 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
766 } else
767 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
768 {
769 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
770 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
771 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
772 } else
773 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
774 {
775 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
776 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
777 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
778 } else
779 if (m_brush.GetStyle() == wxSTIPPLE)
780 {
781 gdk_gc_set_ts_origin( m_brushGC,
782 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
783 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
784 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
785 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
786 }
787 else
788 {
789 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
790 }
791 }
792
793 if (m_pen.GetStyle() != wxTRANSPARENT)
794 {
795 /*
796 for (i = 0 ; i < n ; i++)
797 {
798 gdk_draw_line( m_window, m_penGC,
799 gdkpoints[i%n].x,
800 gdkpoints[i%n].y,
801 gdkpoints[(i+1)%n].x,
802 gdkpoints[(i+1)%n].y);
803 }
804 */
805 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
806
807 }
808 }
809
810 if (doScale)
811 delete[] gdkpoints;
812 }
813
814 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
815 {
816 wxCHECK_RET( Ok(), wxT("invalid window dc") );
817
818 wxCoord xx = XLOG2DEV(x);
819 wxCoord yy = YLOG2DEV(y);
820 wxCoord ww = m_signX * XLOG2DEVREL(width);
821 wxCoord hh = m_signY * YLOG2DEVREL(height);
822
823 // CMB: draw nothing if transformed w or h is 0
824 if (ww == 0 || hh == 0) return;
825
826 // CMB: handle -ve width and/or height
827 if (ww < 0) { ww = -ww; xx = xx - ww; }
828 if (hh < 0) { hh = -hh; yy = yy - hh; }
829
830 if (m_window)
831 {
832 if (m_brush.GetStyle() != wxTRANSPARENT)
833 {
834 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
835 {
836 gdk_gc_set_ts_origin( m_textGC,
837 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
838 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
839 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
840 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
841 } else
842 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
843 {
844 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
845 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
846 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
847 } else
848 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
849 {
850 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
851 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
852 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
853 } else
854 if (m_brush.GetStyle() == wxSTIPPLE)
855 {
856 gdk_gc_set_ts_origin( m_brushGC,
857 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
858 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
859 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
860 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
861 }
862 else
863 {
864 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
865 }
866 }
867
868 if (m_pen.GetStyle() != wxTRANSPARENT)
869 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
870 }
871
872 CalcBoundingBox( x, y );
873 CalcBoundingBox( x + width, y + height );
874 }
875
876 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
877 {
878 wxCHECK_RET( Ok(), wxT("invalid window dc") );
879
880 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
881
882 wxCoord xx = XLOG2DEV(x);
883 wxCoord yy = YLOG2DEV(y);
884 wxCoord ww = m_signX * XLOG2DEVREL(width);
885 wxCoord hh = m_signY * YLOG2DEVREL(height);
886 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
887
888 // CMB: handle -ve width and/or height
889 if (ww < 0) { ww = -ww; xx = xx - ww; }
890 if (hh < 0) { hh = -hh; yy = yy - hh; }
891
892 // CMB: if radius is zero use DrawRectangle() instead to avoid
893 // X drawing errors with small radii
894 if (rr == 0)
895 {
896 DrawRectangle( x, y, width, height );
897 return;
898 }
899
900 // CMB: draw nothing if transformed w or h is 0
901 if (ww == 0 || hh == 0) return;
902
903 // CMB: adjust size if outline is drawn otherwise the result is
904 // 1 pixel too wide and high
905 if (m_pen.GetStyle() != wxTRANSPARENT)
906 {
907 ww--;
908 hh--;
909 }
910
911 if (m_window)
912 {
913 // CMB: ensure dd is not larger than rectangle otherwise we
914 // get an hour glass shape
915 wxCoord dd = 2 * rr;
916 if (dd > ww) dd = ww;
917 if (dd > hh) dd = hh;
918 rr = dd / 2;
919
920 if (m_brush.GetStyle() != wxTRANSPARENT)
921 {
922 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
923 {
924 gdk_gc_set_ts_origin( m_textGC,
925 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
926 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
927 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
928 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
929 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
930 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
931 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
932 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
933 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
934 } else
935 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
936 {
937 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
938 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
939 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
940 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
941 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
942 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
944 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
945 } else
946 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
947 {
948 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
949 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
950 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
951 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
952 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
953 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
954 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
955 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
956 } else
957 if (m_brush.GetStyle() == wxSTIPPLE)
958 {
959 gdk_gc_set_ts_origin( m_brushGC,
960 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
961 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
962 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
963 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
964 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
965 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
966 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
967 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
968 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
969 }
970 else
971 {
972 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
973 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
974 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
975 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
976 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
977 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
978 }
979 }
980
981 if (m_pen.GetStyle() != wxTRANSPARENT)
982 {
983 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
984 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
985 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
986 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
987 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
988 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
989 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
990 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
991 }
992 }
993
994 // this ignores the radius
995 CalcBoundingBox( x, y );
996 CalcBoundingBox( x + width, y + height );
997 }
998
999 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1000 {
1001 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1002
1003 wxCoord xx = XLOG2DEV(x);
1004 wxCoord yy = YLOG2DEV(y);
1005 wxCoord ww = m_signX * XLOG2DEVREL(width);
1006 wxCoord hh = m_signY * YLOG2DEVREL(height);
1007
1008 // CMB: handle -ve width and/or height
1009 if (ww < 0) { ww = -ww; xx = xx - ww; }
1010 if (hh < 0) { hh = -hh; yy = yy - hh; }
1011
1012 if (m_window)
1013 {
1014 if (m_brush.GetStyle() != wxTRANSPARENT)
1015 {
1016 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1017 {
1018 gdk_gc_set_ts_origin( m_textGC,
1019 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1020 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1021 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1022 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1023 } else
1024 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1025 {
1026 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1027 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1028 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1029 } else
1030 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1031 {
1032 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
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 (m_brush.GetStyle() == wxSTIPPLE)
1037 {
1038 gdk_gc_set_ts_origin( m_brushGC,
1039 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1040 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1041 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1042 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1043 }
1044 else
1045 {
1046 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1047 }
1048 }
1049
1050 if (m_pen.GetStyle() != wxTRANSPARENT)
1051 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1052 }
1053
1054 CalcBoundingBox( x, y );
1055 CalcBoundingBox( x + width, y + height );
1056 }
1057
1058 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1059 {
1060 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1061 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1062 }
1063
1064 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1065 wxCoord x, wxCoord y,
1066 bool useMask )
1067 {
1068 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1069
1070 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1071
1072 bool is_mono = bitmap.GetDepth() == 1;
1073
1074 // scale/translate size and position
1075 int xx = XLOG2DEV(x);
1076 int yy = YLOG2DEV(y);
1077
1078 int w = bitmap.GetWidth();
1079 int h = bitmap.GetHeight();
1080
1081 CalcBoundingBox( x, y );
1082 CalcBoundingBox( x + w, y + h );
1083
1084 if (!m_window) return;
1085
1086 int ww = XLOG2DEVREL(w);
1087 int hh = YLOG2DEVREL(h);
1088
1089 // compare to current clipping region
1090 if (!m_currentClippingRegion.IsNull())
1091 {
1092 wxRegion tmp( xx,yy,ww,hh );
1093 tmp.Intersect( m_currentClippingRegion );
1094 if (tmp.IsEmpty())
1095 return;
1096 }
1097
1098 // scale bitmap if required
1099 wxBitmap use_bitmap = bitmap;
1100 if ((w != ww) || (h != hh))
1101 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1102
1103 #if !GTK_CHECK_VERSION(2,2,0)
1104 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1105 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1106 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1107 // and also creates the mask as a side-effect:
1108 use_bitmap.GetPixmap();
1109 #endif
1110
1111 // apply mask if any
1112 GdkBitmap *mask = (GdkBitmap *) NULL;
1113 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1114
1115 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1116
1117 if (useMask && mask)
1118 {
1119 if (!m_currentClippingRegion.IsNull())
1120 {
1121 GdkColor col;
1122 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1123 GdkGC *gc = gdk_gc_new( new_mask );
1124 col.pixel = 0;
1125 gdk_gc_set_foreground( gc, &col );
1126 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1127 col.pixel = 0;
1128 gdk_gc_set_background( gc, &col );
1129 col.pixel = 1;
1130 gdk_gc_set_foreground( gc, &col );
1131 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1132 gdk_gc_set_clip_origin( gc, -xx, -yy );
1133 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1134 gdk_gc_set_stipple( gc, mask );
1135 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1136 g_object_unref (gc);
1137 }
1138
1139 if (is_mono)
1140 {
1141 if (new_mask)
1142 gdk_gc_set_clip_mask( m_textGC, new_mask );
1143 else
1144 gdk_gc_set_clip_mask( m_textGC, mask );
1145 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1146 }
1147 else
1148 {
1149 if (new_mask)
1150 gdk_gc_set_clip_mask( m_penGC, new_mask );
1151 else
1152 gdk_gc_set_clip_mask( m_penGC, mask );
1153 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1154 }
1155 }
1156
1157 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1158 // drawing a mono-bitmap (XBitmap) we use the current text GC
1159 if (is_mono)
1160 {
1161 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1162 GdkGC *gc = gdk_gc_new( bitmap2 );
1163 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1164 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1165 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1166
1167 gdk_draw_drawable( m_window, m_textGC, bitmap2, 0, 0, xx, yy, -1, -1 );
1168
1169 g_object_unref (bitmap2);
1170 g_object_unref (gc);
1171 }
1172 else
1173 {
1174 #if GTK_CHECK_VERSION(2,2,0)
1175 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1176 {
1177 gdk_draw_pixbuf(m_window, m_penGC,
1178 use_bitmap.GetPixbuf(),
1179 0, 0, xx, yy, -1, -1,
1180 GDK_RGB_DITHER_NORMAL, xx, yy);
1181 }
1182 else
1183 #endif
1184 {
1185 gdk_draw_drawable(m_window, m_penGC,
1186 use_bitmap.GetPixmap(),
1187 0, 0, xx, yy, -1, -1);
1188 }
1189 }
1190
1191 // remove mask again if any
1192 if (useMask && mask)
1193 {
1194 if (is_mono)
1195 {
1196 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1197 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1198 if (!m_currentClippingRegion.IsNull())
1199 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1200 }
1201 else
1202 {
1203 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1204 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1205 if (!m_currentClippingRegion.IsNull())
1206 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1207 }
1208 }
1209
1210 if (new_mask)
1211 g_object_unref (new_mask);
1212 }
1213
1214 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1215 wxCoord width, wxCoord height,
1216 wxDC *source,
1217 wxCoord xsrc, wxCoord ysrc,
1218 int logical_func,
1219 bool useMask,
1220 wxCoord xsrcMask, wxCoord ysrcMask )
1221 {
1222 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1223
1224 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1225
1226 if (!m_window) return false;
1227
1228 // transform the source DC coords to the device ones
1229 xsrc = source->XLOG2DEV(xsrc);
1230 ysrc = source->YLOG2DEV(ysrc);
1231
1232 wxClientDC *srcDC = (wxClientDC*)source;
1233 wxMemoryDC *memDC = (wxMemoryDC*)source;
1234
1235 bool use_bitmap_method = false;
1236 bool is_mono = false;
1237
1238 if (xsrcMask == -1 && ysrcMask == -1)
1239 {
1240 xsrcMask = xsrc;
1241 ysrcMask = ysrc;
1242 }
1243
1244 if (srcDC->m_isMemDC)
1245 {
1246 if (!memDC->m_selected.Ok()) return false;
1247
1248 is_mono = (memDC->m_selected.GetDepth() == 1);
1249
1250 // we use the "XCopyArea" way to copy a memory dc into
1251 // a different window if the memory dc BOTH
1252 // a) doesn't have any mask or its mask isn't used
1253 // b) it is clipped
1254 // c) is not 1-bit
1255
1256 if (useMask && (memDC->m_selected.GetMask()))
1257 {
1258 // we HAVE TO use the direct way for memory dcs
1259 // that have mask since the XCopyArea doesn't know
1260 // about masks
1261 use_bitmap_method = true;
1262 }
1263 else if (is_mono)
1264 {
1265 // we HAVE TO use the direct way for memory dcs
1266 // that are bitmaps because XCopyArea doesn't cope
1267 // with different bit depths
1268 use_bitmap_method = true;
1269 }
1270 else if ((xsrc == 0) && (ysrc == 0) &&
1271 (width == memDC->m_selected.GetWidth()) &&
1272 (height == memDC->m_selected.GetHeight()))
1273 {
1274 // we SHOULD use the direct way if all of the bitmap
1275 // in the memory dc is copied in which case XCopyArea
1276 // wouldn't be able able to boost performace by reducing
1277 // the area to be scaled
1278 use_bitmap_method = true;
1279 }
1280 else
1281 {
1282 use_bitmap_method = false;
1283 }
1284 }
1285
1286 CalcBoundingBox( xdest, ydest );
1287 CalcBoundingBox( xdest + width, ydest + height );
1288
1289 // scale/translate size and position
1290 wxCoord xx = XLOG2DEV(xdest);
1291 wxCoord yy = YLOG2DEV(ydest);
1292
1293 wxCoord ww = XLOG2DEVREL(width);
1294 wxCoord hh = YLOG2DEVREL(height);
1295
1296 // compare to current clipping region
1297 if (!m_currentClippingRegion.IsNull())
1298 {
1299 wxRegion tmp( xx,yy,ww,hh );
1300 tmp.Intersect( m_currentClippingRegion );
1301 if (tmp.IsEmpty())
1302 return true;
1303 }
1304
1305 int old_logical_func = m_logicalFunction;
1306 SetLogicalFunction( logical_func );
1307
1308 if (use_bitmap_method)
1309 {
1310 // scale/translate bitmap size
1311 wxCoord bm_width = memDC->m_selected.GetWidth();
1312 wxCoord bm_height = memDC->m_selected.GetHeight();
1313
1314 // Get clip coords for the bitmap. If we don't
1315 // use wxBitmap::Rescale(), which can clip the
1316 // bitmap, these are the same as the original
1317 // coordinates
1318 wxCoord cx = xx;
1319 wxCoord cy = yy;
1320 wxCoord cw = ww;
1321 wxCoord ch = hh;
1322
1323 // interpret userscale of src too
1324 double xsc,ysc;
1325 memDC->GetUserScale(&xsc,&ysc);
1326 bm_width = (int) (bm_width / xsc);
1327 bm_height = (int) (bm_height / ysc);
1328
1329 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1330 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1331
1332 // Scale bitmap if required
1333 wxBitmap use_bitmap;
1334 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1335 {
1336 // This indicates that the blitting code below will get
1337 // a clipped bitmap and therefore needs to move the origin
1338 // accordingly
1339 wxRegion tmp( xx,yy,ww,hh );
1340 tmp.Intersect( m_currentClippingRegion );
1341 tmp.GetBox(cx,cy,cw,ch);
1342
1343 // Scale and clipped bitmap
1344 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1345 }
1346 else
1347 {
1348 // Don't scale bitmap
1349 use_bitmap = memDC->m_selected;
1350 }
1351
1352 // apply mask if any
1353 GdkBitmap *mask = (GdkBitmap *) NULL;
1354 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1355
1356 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1357
1358 if (useMask && mask)
1359 {
1360 if (!m_currentClippingRegion.IsNull())
1361 {
1362 GdkColor col;
1363 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1364 GdkGC *gc = gdk_gc_new( new_mask );
1365 col.pixel = 0;
1366 gdk_gc_set_foreground( gc, &col );
1367 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1368 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1369 col.pixel = 0;
1370 gdk_gc_set_background( gc, &col );
1371 col.pixel = 1;
1372 gdk_gc_set_foreground( gc, &col );
1373 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1374 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1375 gdk_gc_set_clip_origin( gc, -cx, -cy );
1376 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1377 gdk_gc_set_stipple( gc, mask );
1378 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1379 g_object_unref (gc);
1380 }
1381
1382 if (is_mono)
1383 {
1384 if (new_mask)
1385 {
1386 gdk_gc_set_clip_mask( m_textGC, new_mask );
1387 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1388 }
1389 else
1390 {
1391 gdk_gc_set_clip_mask( m_textGC, mask );
1392 gdk_gc_set_clip_origin( m_textGC, cx-xsrcMask, cy-ysrcMask );
1393 }
1394 }
1395 else
1396 {
1397 if (new_mask)
1398 {
1399 gdk_gc_set_clip_mask( m_penGC, new_mask );
1400 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1401 }
1402 else
1403 {
1404 gdk_gc_set_clip_mask( m_penGC, mask );
1405 gdk_gc_set_clip_origin( m_penGC, cx-xsrcMask, cy-ysrcMask );
1406 }
1407 }
1408 }
1409
1410 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1411 // drawing a mono-bitmap (XBitmap) we use the current text GC
1412
1413 if (is_mono)
1414 {
1415 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1416 GdkGC *gc = gdk_gc_new( bitmap );
1417 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1418 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1419 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1420
1421 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1422
1423 g_object_unref (bitmap);
1424 g_object_unref (gc);
1425 }
1426 else
1427 {
1428 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1429 gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1430 }
1431
1432 // remove mask again if any
1433 if (useMask && mask)
1434 {
1435 if (is_mono)
1436 {
1437 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1438 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1439 if (!m_currentClippingRegion.IsNull())
1440 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1441 }
1442 else
1443 {
1444 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1445 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1446 if (!m_currentClippingRegion.IsNull())
1447 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1448 }
1449 }
1450
1451 if (new_mask)
1452 g_object_unref (new_mask);
1453 }
1454 else // use_bitmap_method
1455 {
1456 if ((width != ww) || (height != hh))
1457 {
1458 // get clip coords
1459 wxRegion tmp( xx,yy,ww,hh );
1460 tmp.Intersect( m_currentClippingRegion );
1461 wxCoord cx,cy,cw,ch;
1462 tmp.GetBox(cx,cy,cw,ch);
1463
1464 // rescale bitmap
1465 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1466
1467 // draw scaled bitmap
1468 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1469 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1470 }
1471 else
1472 {
1473 // No scaling and not a memory dc with a mask either
1474
1475 // copy including child window contents
1476 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1477 gdk_draw_drawable( m_window, m_penGC,
1478 srcDC->GetWindow(),
1479 xsrc, ysrc, xx, yy,
1480 width, height );
1481 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1482 }
1483 }
1484
1485 SetLogicalFunction( old_logical_func );
1486
1487 return true;
1488 }
1489
1490 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1491 {
1492 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1493
1494 if (!m_window) return;
1495
1496 if (text.empty()) return;
1497
1498 x = XLOG2DEV(x);
1499 y = YLOG2DEV(y);
1500
1501 wxCHECK_RET( m_context, wxT("no Pango context") );
1502 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1503 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1504
1505 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1506
1507 const wxCharBuffer data = wxGTK_CONV( text );
1508 if ( !data )
1509 return;
1510 const size_t datalen = strlen(data);
1511 pango_layout_set_text( m_layout, data, datalen);
1512
1513 if (underlined)
1514 {
1515 PangoAttrList *attrs = pango_attr_list_new();
1516 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1517 a->start_index = 0;
1518 a->end_index = datalen;
1519 pango_attr_list_insert(attrs, a);
1520 pango_layout_set_attributes(m_layout, attrs);
1521 pango_attr_list_unref(attrs);
1522 }
1523
1524 int w,h;
1525
1526 if (fabs(m_scaleY - 1.0) > 0.00001)
1527 {
1528 // If there is a user or actually any scale applied to
1529 // the device context, scale the font.
1530
1531 // scale font description
1532 gint oldSize = pango_font_description_get_size( m_fontdesc );
1533 double size = oldSize;
1534 size = size * m_scaleY;
1535 pango_font_description_set_size( m_fontdesc, (gint)size );
1536
1537 // actually apply scaled font
1538 pango_layout_set_font_description( m_layout, m_fontdesc );
1539
1540 pango_layout_get_pixel_size( m_layout, &w, &h );
1541 if ( m_backgroundMode == wxSOLID )
1542 {
1543 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1544 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1545 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1546 }
1547
1548 // Draw layout.
1549 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1550
1551 // reset unscaled size
1552 pango_font_description_set_size( m_fontdesc, oldSize );
1553
1554 // actually apply unscaled font
1555 pango_layout_set_font_description( m_layout, m_fontdesc );
1556 }
1557 else
1558 {
1559 pango_layout_get_pixel_size( m_layout, &w, &h );
1560 if ( m_backgroundMode == wxSOLID )
1561 {
1562 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1563 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1564 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1565 }
1566 // Draw layout.
1567 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1568 }
1569
1570 if (underlined)
1571 {
1572 // undo underline attributes setting:
1573 pango_layout_set_attributes(m_layout, NULL);
1574 }
1575
1576 wxCoord width = w;
1577 wxCoord height = h;
1578
1579 width = wxCoord(width / m_scaleX);
1580 height = wxCoord(height / m_scaleY);
1581 CalcBoundingBox (x + width, y + height);
1582 CalcBoundingBox (x, y);
1583 }
1584
1585
1586 // TODO: There is an example of rotating text with GTK2 that would probably be
1587 // a better approach here:
1588 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1589
1590 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1591 {
1592 if (!m_window || text.empty())
1593 return;
1594
1595 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1596
1597 if ( wxIsNullDouble(angle) )
1598 {
1599 DrawText(text, x, y);
1600 return;
1601 }
1602
1603 wxCoord w;
1604 wxCoord h;
1605
1606 // TODO: implement later without GdkFont for GTK 2.0
1607 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1608
1609 // draw the string normally
1610 wxBitmap src(w, h);
1611 wxMemoryDC dc;
1612 dc.SelectObject(src);
1613 dc.SetFont(GetFont());
1614 dc.SetBackground(*wxBLACK_BRUSH);
1615 dc.SetBrush(*wxBLACK_BRUSH);
1616 dc.Clear();
1617 dc.SetTextForeground( *wxWHITE );
1618 dc.DrawText(text, 0, 0);
1619 dc.SelectObject(wxNullBitmap);
1620
1621 // Calculate the size of the rotated bounding box.
1622 double rad = DegToRad(angle);
1623 double dx = cos(rad),
1624 dy = sin(rad);
1625
1626 // the rectngle vertices are counted clockwise with the first one being at
1627 // (0, 0) (or, rather, at (x, y))
1628 double x2 = w*dx,
1629 y2 = -w*dy; // y axis points to the bottom, hence minus
1630 double x4 = h*dy,
1631 y4 = h*dx;
1632 double x3 = x4 + x2,
1633 y3 = y4 + y2;
1634
1635 // calc max and min
1636 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1637 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1638 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1639 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1640
1641
1642 wxImage image = src.ConvertToImage();
1643
1644 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1645 m_textForegroundColour.Green(),
1646 m_textForegroundColour.Blue() );
1647 image = image.Rotate( rad, wxPoint(0,0) );
1648
1649 int i_angle = (int) angle;
1650 i_angle = i_angle % 360;
1651 if (i_angle < 0)
1652 i_angle += 360;
1653 int xoffset = 0;
1654 if ((i_angle >= 90.0) && (i_angle < 270.0))
1655 xoffset = image.GetWidth();
1656 int yoffset = 0;
1657 if ((i_angle >= 0.0) && (i_angle < 180.0))
1658 yoffset = image.GetHeight();
1659
1660 if ((i_angle >= 0) && (i_angle < 90))
1661 yoffset -= (int)( cos(rad)*h );
1662 if ((i_angle >= 90) && (i_angle < 180))
1663 xoffset -= (int)( sin(rad)*h );
1664 if ((i_angle >= 180) && (i_angle < 270))
1665 yoffset -= (int)( cos(rad)*h );
1666 if ((i_angle >= 270) && (i_angle < 360))
1667 xoffset -= (int)( sin(rad)*h );
1668
1669 int i_x = x - xoffset;
1670 int i_y = y - yoffset;
1671
1672 src = image;
1673 DoDrawBitmap( src, i_x, i_y, true );
1674
1675
1676 // it would be better to draw with non underlined font and draw the line
1677 // manually here (it would be more straight...)
1678 #if 0
1679 if ( m_font.GetUnderlined() )
1680 {
1681 gdk_draw_line( m_window, m_textGC,
1682 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1683 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1684 }
1685 #endif // 0
1686
1687 // update the bounding box
1688 CalcBoundingBox(x + minX, y + minY);
1689 CalcBoundingBox(x + maxX, y + maxY);
1690 }
1691
1692 void wxWindowDC::DoGetTextExtent(const wxString &string,
1693 wxCoord *width, wxCoord *height,
1694 wxCoord *descent, wxCoord *externalLeading,
1695 wxFont *theFont) const
1696 {
1697 if ( width )
1698 *width = 0;
1699 if ( height )
1700 *height = 0;
1701 if ( descent )
1702 *descent = 0;
1703 if ( externalLeading )
1704 *externalLeading = 0;
1705
1706 if (string.empty())
1707 return;
1708
1709 // ensure that theFont is always non-NULL
1710 if ( !theFont || !theFont->Ok() )
1711 theFont = wx_const_cast(wxFont *, &m_font);
1712
1713 // and use it if it's valid
1714 if ( theFont->Ok() )
1715 {
1716 pango_layout_set_font_description
1717 (
1718 m_layout,
1719 theFont->GetNativeFontInfo()->description
1720 );
1721 }
1722
1723 // Set layout's text
1724 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1725 if ( !dataUTF8 )
1726 {
1727 // hardly ideal, but what else can we do if conversion failed?
1728 return;
1729 }
1730
1731 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1732
1733 if (descent)
1734 {
1735 int h;
1736 pango_layout_get_pixel_size( m_layout, width, &h );
1737 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1738 int baseline = pango_layout_iter_get_baseline(iter);
1739 pango_layout_iter_free(iter);
1740 *descent = h - PANGO_PIXELS(baseline);
1741
1742 if (height)
1743 *height = (wxCoord) h;
1744 }
1745 else
1746 {
1747 pango_layout_get_pixel_size( m_layout, width, height );
1748 }
1749
1750 // Reset old font description
1751 if (theFont)
1752 pango_layout_set_font_description( m_layout, m_fontdesc );
1753 }
1754
1755 wxCoord wxWindowDC::GetCharWidth() const
1756 {
1757 pango_layout_set_text( m_layout, "H", 1 );
1758 int w;
1759 pango_layout_get_pixel_size( m_layout, &w, NULL );
1760 return w;
1761 }
1762
1763 wxCoord wxWindowDC::GetCharHeight() const
1764 {
1765 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, NULL);
1766 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
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 (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()->GetDepth() != 1)
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()->GetPixmap() );
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()->GetDepth() != 1)
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()->GetPixmap() );
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)