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don't crash on zero length string in DoDrawRotatedText
[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 #endif
23
24 #include "wx/image.h"
25 #include "wx/module.h"
26 #include "wx/fontutil.h"
27
28 #include "wx/gtk/win_gtk.h"
29 #include "wx/gtk/private.h"
30
31 #include "wx/math.h" // for floating-point functions
32
33 #include <gdk/gdk.h>
34 #include <gdk/gdkx.h>
35 #include <gdk/gdkprivate.h>
36 #include <gtk/gtk.h>
37
38 //-----------------------------------------------------------------------------
39 // local defines
40 //-----------------------------------------------------------------------------
41
42 #define USE_PAINT_REGION 1
43
44 //-----------------------------------------------------------------------------
45 // local data
46 //-----------------------------------------------------------------------------
47
48 #include "bdiag.xbm"
49 #include "fdiag.xbm"
50 #include "cdiag.xbm"
51 #include "horiz.xbm"
52 #include "verti.xbm"
53 #include "cross.xbm"
54 #define num_hatches 6
55
56 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
57 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
58
59
60 static GdkPixmap *hatches[num_hatches];
61 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
62
63 extern GtkWidget *wxGetRootWindow();
64
65 //-----------------------------------------------------------------------------
66 // constants
67 //-----------------------------------------------------------------------------
68
69 const double RAD2DEG = 180.0 / M_PI;
70
71 // ----------------------------------------------------------------------------
72 // private functions
73 // ----------------------------------------------------------------------------
74
75 static inline double dmax(double a, double b) { return a > b ? a : b; }
76 static inline double dmin(double a, double b) { return a < b ? a : b; }
77
78 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
79
80 //-----------------------------------------------------------------------------
81 // temporary implementation of the missing GDK function
82 //-----------------------------------------------------------------------------
83
84 #include "gdk/gdkprivate.h"
85
86 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
87 GdkGC *gc,
88 GdkDrawable *src,
89 gint xsrc,
90 gint ysrc,
91 gint xdest,
92 gint ydest,
93 gint width,
94 gint height)
95 {
96 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
98 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
99
100 gint src_width, src_height;
101 gdk_drawable_get_size(src, &src_width, &src_height);
102 if (width == -1) width = src_width;
103 if (height == -1) height = src_height;
104
105 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
106 GDK_WINDOW_XID(src),
107 GDK_WINDOW_XID(drawable),
108 GDK_GC_XGC(gc),
109 xsrc, ysrc,
110 width, height,
111 0, 0,
112 1 );
113 }
114
115 //-----------------------------------------------------------------------------
116 // Implement Pool of Graphic contexts. Creating them takes too much time.
117 //-----------------------------------------------------------------------------
118
119 enum wxPoolGCType
120 {
121 wxGC_ERROR = 0,
122 wxTEXT_MONO,
123 wxBG_MONO,
124 wxPEN_MONO,
125 wxBRUSH_MONO,
126 wxTEXT_COLOUR,
127 wxBG_COLOUR,
128 wxPEN_COLOUR,
129 wxBRUSH_COLOUR,
130 wxTEXT_SCREEN,
131 wxBG_SCREEN,
132 wxPEN_SCREEN,
133 wxBRUSH_SCREEN
134 };
135
136 struct wxGC
137 {
138 GdkGC *m_gc;
139 wxPoolGCType m_type;
140 bool m_used;
141 };
142
143 #define GC_POOL_ALLOC_SIZE 100
144
145 static int wxGCPoolSize = 0;
146
147 static wxGC *wxGCPool = NULL;
148
149 static void wxInitGCPool()
150 {
151 // This really could wait until the first call to
152 // wxGetPoolGC, but we will make the first allocation
153 // now when other initialization is being performed.
154
155 // Set initial pool size.
156 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
157
158 // Allocate initial pool.
159 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
160 if (wxGCPool == NULL)
161 {
162 // If we cannot malloc, then fail with error
163 // when debug is enabled. If debug is not enabled,
164 // the problem will eventually get caught
165 // in wxGetPoolGC.
166 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
167 return;
168 }
169
170 // Zero initial pool.
171 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
172 }
173
174 static void wxCleanUpGCPool()
175 {
176 for (int i = 0; i < wxGCPoolSize; i++)
177 {
178 if (wxGCPool[i].m_gc)
179 g_object_unref (wxGCPool[i].m_gc);
180 }
181
182 free(wxGCPool);
183 wxGCPool = NULL;
184 wxGCPoolSize = 0;
185 }
186
187 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
188 {
189 wxGC *pptr;
190
191 // Look for an available GC.
192 for (int i = 0; i < wxGCPoolSize; i++)
193 {
194 if (!wxGCPool[i].m_gc)
195 {
196 wxGCPool[i].m_gc = gdk_gc_new( window );
197 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
198 wxGCPool[i].m_type = type;
199 wxGCPool[i].m_used = false;
200 }
201 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
202 {
203 wxGCPool[i].m_used = true;
204 return wxGCPool[i].m_gc;
205 }
206 }
207
208 // We did not find an available GC.
209 // We need to grow the GC pool.
210 pptr = (wxGC *)realloc(wxGCPool,
211 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
212 if (pptr != NULL)
213 {
214 // Initialize newly allocated pool.
215 wxGCPool = pptr;
216 memset(&wxGCPool[wxGCPoolSize], 0,
217 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
218
219 // Initialize entry we will return.
220 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
221 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
222 wxGCPool[wxGCPoolSize].m_type = type;
223 wxGCPool[wxGCPoolSize].m_used = true;
224
225 // Set new value of pool size.
226 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
227
228 // Return newly allocated entry.
229 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
230 }
231
232 // The realloc failed. Fall through to error.
233 wxFAIL_MSG( wxT("No GC available") );
234
235 return (GdkGC*) NULL;
236 }
237
238 static void wxFreePoolGC( GdkGC *gc )
239 {
240 for (int i = 0; i < wxGCPoolSize; i++)
241 {
242 if (wxGCPool[i].m_gc == gc)
243 {
244 wxGCPool[i].m_used = false;
245 return;
246 }
247 }
248
249 wxFAIL_MSG( wxT("Wrong GC") );
250 }
251
252 //-----------------------------------------------------------------------------
253 // wxWindowDC
254 //-----------------------------------------------------------------------------
255
256 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
257
258 wxWindowDC::wxWindowDC()
259 {
260 m_penGC = (GdkGC *) NULL;
261 m_brushGC = (GdkGC *) NULL;
262 m_textGC = (GdkGC *) NULL;
263 m_bgGC = (GdkGC *) NULL;
264 m_cmap = (GdkColormap *) NULL;
265 m_isMemDC = false;
266 m_isScreenDC = false;
267 m_owner = (wxWindow *)NULL;
268 m_context = (PangoContext *)NULL;
269 m_layout = (PangoLayout *)NULL;
270 m_fontdesc = (PangoFontDescription *)NULL;
271 }
272
273 wxWindowDC::wxWindowDC( wxWindow *window )
274 {
275 wxASSERT_MSG( window, wxT("DC needs a window") );
276
277 m_penGC = (GdkGC *) NULL;
278 m_brushGC = (GdkGC *) NULL;
279 m_textGC = (GdkGC *) NULL;
280 m_bgGC = (GdkGC *) NULL;
281 m_cmap = (GdkColormap *) NULL;
282 m_owner = (wxWindow *)NULL;
283 m_isMemDC = false;
284 m_isScreenDC = false;
285 m_font = window->GetFont();
286
287 GtkWidget *widget = window->m_wxwindow;
288
289 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
290 // code should still be able to create wxClientDCs for them, so we will
291 // use the parent window here then.
292 if ( !widget )
293 {
294 window = window->GetParent();
295 widget = window->m_wxwindow;
296 }
297
298 wxASSERT_MSG( widget, wxT("DC needs a widget") );
299
300 m_context = window->GtkGetPangoDefaultContext();
301 m_layout = pango_layout_new( m_context );
302 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
303
304 GtkPizza *pizza = GTK_PIZZA( widget );
305 m_window = pizza->bin_window;
306
307 // Window not realized ?
308 if (!m_window)
309 {
310 // Don't report problems as per MSW.
311 m_ok = true;
312
313 return;
314 }
315
316 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
317
318 SetUpDC();
319
320 /* this must be done after SetUpDC, bacause SetUpDC calls the
321 repective SetBrush, SetPen, SetBackground etc functions
322 to set up the DC. SetBackground call m_owner->SetBackground
323 and this might not be desired as the standard dc background
324 is white whereas a window might assume gray to be the
325 standard (as e.g. wxStatusBar) */
326
327 m_owner = window;
328 }
329
330 wxWindowDC::~wxWindowDC()
331 {
332 Destroy();
333
334 if (m_layout)
335 g_object_unref (m_layout);
336 if (m_fontdesc)
337 pango_font_description_free( m_fontdesc );
338 }
339
340 void wxWindowDC::SetUpDC()
341 {
342 m_ok = true;
343
344 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
345
346 if (m_isScreenDC)
347 {
348 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
349 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
350 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
351 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
352 }
353 else
354 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
355 {
356 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
357 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
358 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
359 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
360 }
361 else
362 {
363 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
364 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
365 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
366 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
367 }
368
369 /* background colour */
370 m_backgroundBrush = *wxWHITE_BRUSH;
371 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
372 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
373
374 /* m_textGC */
375 m_textForegroundColour.CalcPixel( m_cmap );
376 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
377
378 m_textBackgroundColour.CalcPixel( m_cmap );
379 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
380
381 gdk_gc_set_fill( m_textGC, GDK_SOLID );
382
383 /* m_penGC */
384 m_pen.GetColour().CalcPixel( m_cmap );
385 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
386 gdk_gc_set_background( m_penGC, bg_col );
387
388 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
389
390 /* m_brushGC */
391 m_brush.GetColour().CalcPixel( m_cmap );
392 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
393 gdk_gc_set_background( m_brushGC, bg_col );
394
395 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
396
397 /* m_bgGC */
398 gdk_gc_set_background( m_bgGC, bg_col );
399 gdk_gc_set_foreground( m_bgGC, bg_col );
400
401 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
402
403 /* ROPs */
404 gdk_gc_set_function( m_textGC, GDK_COPY );
405 gdk_gc_set_function( m_brushGC, GDK_COPY );
406 gdk_gc_set_function( m_penGC, GDK_COPY );
407
408 /* clipping */
409 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
410 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
411 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
412 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
413
414 if (!hatch_bitmap)
415 {
416 hatch_bitmap = hatches;
417 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
418 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
419 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
420 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
421 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
422 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
423 }
424 }
425
426 void wxWindowDC::DoGetSize( int* width, int* height ) const
427 {
428 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
429
430 m_owner->GetSize(width, height);
431 }
432
433 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
434 const wxColour & col, int style);
435
436 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
437 const wxColour& col, int style)
438 {
439 return wxDoFloodFill(this, x, y, col, style);
440 }
441
442 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
443 {
444 // Generic (and therefore rather inefficient) method.
445 // Could be improved.
446 wxMemoryDC memdc;
447 wxBitmap bitmap(1, 1);
448 memdc.SelectObject(bitmap);
449 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
450 memdc.SelectObject(wxNullBitmap);
451
452 wxImage image = bitmap.ConvertToImage();
453 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
454 return true;
455 }
456
457 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
458 {
459 wxCHECK_RET( Ok(), wxT("invalid window dc") );
460
461 if (m_pen.GetStyle() != wxTRANSPARENT)
462 {
463 if (m_window)
464 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
465
466 CalcBoundingBox(x1, y1);
467 CalcBoundingBox(x2, y2);
468 }
469 }
470
471 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
472 {
473 wxCHECK_RET( Ok(), wxT("invalid window dc") );
474
475 if (m_pen.GetStyle() != wxTRANSPARENT)
476 {
477 int w = 0;
478 int h = 0;
479 GetSize( &w, &h );
480 wxCoord xx = XLOG2DEV(x);
481 wxCoord yy = YLOG2DEV(y);
482 if (m_window)
483 {
484 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
485 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
486 }
487 }
488 }
489
490 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
491 wxCoord xc, wxCoord yc )
492 {
493 wxCHECK_RET( Ok(), wxT("invalid window dc") );
494
495 wxCoord xx1 = XLOG2DEV(x1);
496 wxCoord yy1 = YLOG2DEV(y1);
497 wxCoord xx2 = XLOG2DEV(x2);
498 wxCoord yy2 = YLOG2DEV(y2);
499 wxCoord xxc = XLOG2DEV(xc);
500 wxCoord yyc = YLOG2DEV(yc);
501 double dx = xx1 - xxc;
502 double dy = yy1 - yyc;
503 double radius = sqrt((double)(dx*dx+dy*dy));
504 wxCoord r = (wxCoord)radius;
505 double radius1, radius2;
506
507 if (xx1 == xx2 && yy1 == yy2)
508 {
509 radius1 = 0.0;
510 radius2 = 360.0;
511 }
512 else if ( wxIsNullDouble(radius) )
513 {
514 radius1 =
515 radius2 = 0.0;
516 }
517 else
518 {
519 radius1 = (xx1 - xxc == 0) ?
520 (yy1 - yyc < 0) ? 90.0 : -90.0 :
521 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
522 radius2 = (xx2 - xxc == 0) ?
523 (yy2 - yyc < 0) ? 90.0 : -90.0 :
524 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
525 }
526 wxCoord alpha1 = wxCoord(radius1 * 64.0);
527 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
528 while (alpha2 <= 0) alpha2 += 360*64;
529 while (alpha1 > 360*64) alpha1 -= 360*64;
530
531 if (m_window)
532 {
533 if (m_brush.GetStyle() != wxTRANSPARENT)
534 {
535 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
536 {
537 gdk_gc_set_ts_origin( m_textGC,
538 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
539 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
540 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
541 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
542 } else
543 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
544 {
545 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
546 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
547 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
548 } else
549 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
550 {
551 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
552 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
553 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
554 } else
555 if (m_brush.GetStyle() == wxSTIPPLE)
556 {
557 gdk_gc_set_ts_origin( m_brushGC,
558 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
559 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
560 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
561 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
562 }
563 else
564 {
565 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
566 }
567 }
568
569 if (m_pen.GetStyle() != wxTRANSPARENT)
570 {
571 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
572
573 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
574 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
575 }
576 }
577
578 CalcBoundingBox (x1, y1);
579 CalcBoundingBox (x2, y2);
580 }
581
582 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
583 {
584 wxCHECK_RET( Ok(), wxT("invalid window dc") );
585
586 wxCoord xx = XLOG2DEV(x);
587 wxCoord yy = YLOG2DEV(y);
588 wxCoord ww = m_signX * XLOG2DEVREL(width);
589 wxCoord hh = m_signY * YLOG2DEVREL(height);
590
591 // CMB: handle -ve width and/or height
592 if (ww < 0) { ww = -ww; xx = xx - ww; }
593 if (hh < 0) { hh = -hh; yy = yy - hh; }
594
595 if (m_window)
596 {
597 wxCoord start = wxCoord(sa * 64.0);
598 wxCoord end = wxCoord((ea-sa) * 64.0);
599
600 if (m_brush.GetStyle() != wxTRANSPARENT)
601 {
602 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
603 {
604 gdk_gc_set_ts_origin( m_textGC,
605 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
606 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
607 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
608 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
609 } else
610 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
611 {
612 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
613 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
614 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
615 } else
616 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
617 {
618 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
619 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
620 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
621 } else
622 if (m_brush.GetStyle() == wxSTIPPLE)
623 {
624 gdk_gc_set_ts_origin( m_brushGC,
625 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
626 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
627 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
628 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
629 }
630 else
631 {
632 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
633 }
634 }
635
636 if (m_pen.GetStyle() != wxTRANSPARENT)
637 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
638 }
639
640 CalcBoundingBox (x, y);
641 CalcBoundingBox (x + width, y + height);
642 }
643
644 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
645 {
646 wxCHECK_RET( Ok(), wxT("invalid window dc") );
647
648 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
649 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
650
651 CalcBoundingBox (x, y);
652 }
653
654 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
655 {
656 wxCHECK_RET( Ok(), wxT("invalid window dc") );
657
658 if (m_pen.GetStyle() == wxTRANSPARENT) return;
659 if (n <= 0) return;
660
661 //Check, if scaling is necessary
662 bool doScale(true);
663 long val(10);
664 if (!xoffset)
665 if (!yoffset)
666 if (XLOG2DEV(val)==val)
667 if (YLOG2DEV(val)==val)
668 doScale = false;
669
670 GdkPoint *gpts = NULL;
671
672 if (doScale){
673 gpts = new GdkPoint[n];
674 if (! gpts)
675 {
676 wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
677 return;
678 }
679
680 for (int i = 0; i < n; i++)
681 {
682 wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
683 wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
684
685 CalcBoundingBox( x1 + xoffset, y1 + yoffset );
686
687 gpts[i].x = x1;
688 gpts[i].y = y1;
689 }
690 }
691 else {
692 for (int i = 0; i < n; i++) {
693 CalcBoundingBox( points[i].x, points[i].y );
694 }
695
696 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
697 gpts = reinterpret_cast<GdkPoint*>(points);
698 }
699
700 if (m_window)
701 gdk_draw_lines( m_window, m_penGC, gpts, n);
702
703 if (doScale)
704 delete[] gpts;
705 }
706
707 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
708 {
709 wxCHECK_RET( Ok(), wxT("invalid window dc") );
710
711 if (n <= 0) return;
712
713 //Check, if scaling is necessary
714 bool doScale(true);
715 long val(10);
716 if (!xoffset)
717 if (!yoffset)
718 if (XLOG2DEV(val)==val)
719 if (YLOG2DEV(val)==val){
720 doScale = false;
721 }
722
723 GdkPoint *gdkpoints = NULL;
724
725 if (doScale){
726 gdkpoints = new GdkPoint[n+1]; //FIXME: Why the "+1"
727
728 int i;
729 for (i = 0 ; i < n ; i++)
730 {
731 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
732 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
733
734 CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset );
735 }
736 }
737 else {
738 int i(0);
739 for (; i < n ; ++i) {
740 CalcBoundingBox( points[i].x, points[i].y );
741 }
742 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
743 gdkpoints = reinterpret_cast<GdkPoint*> (points);
744 }
745
746 if (m_window)
747 {
748 //I think wxSOLID is the most often used style (it is for me),
749 //so I put it in front of the if ... ifelse's
750 if (m_brush.GetStyle() == wxSOLID)
751 {
752 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
753 }else
754 if (m_brush.GetStyle() != wxTRANSPARENT)
755 {
756 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
757 {
758 gdk_gc_set_ts_origin( m_textGC,
759 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
760 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
761 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
762 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
763 } else
764 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
765 {
766 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
767 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
768 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
769 } else
770 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
771 {
772 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
773 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
774 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
775 } else
776 if (m_brush.GetStyle() == wxSTIPPLE)
777 {
778 gdk_gc_set_ts_origin( m_brushGC,
779 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
780 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
781 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
782 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
783 }
784 else
785 {
786 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
787 }
788 }
789
790 if (m_pen.GetStyle() != wxTRANSPARENT)
791 {
792 /*
793 for (i = 0 ; i < n ; i++)
794 {
795 gdk_draw_line( m_window, m_penGC,
796 gdkpoints[i%n].x,
797 gdkpoints[i%n].y,
798 gdkpoints[(i+1)%n].x,
799 gdkpoints[(i+1)%n].y);
800 }
801 */
802 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
803
804 }
805 }
806
807 if (doScale)
808 delete[] gdkpoints;
809 }
810
811 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
812 {
813 wxCHECK_RET( Ok(), wxT("invalid window dc") );
814
815 wxCoord xx = XLOG2DEV(x);
816 wxCoord yy = YLOG2DEV(y);
817 wxCoord ww = m_signX * XLOG2DEVREL(width);
818 wxCoord hh = m_signY * YLOG2DEVREL(height);
819
820 // CMB: draw nothing if transformed w or h is 0
821 if (ww == 0 || hh == 0) return;
822
823 // CMB: handle -ve width and/or height
824 if (ww < 0) { ww = -ww; xx = xx - ww; }
825 if (hh < 0) { hh = -hh; yy = yy - hh; }
826
827 if (m_window)
828 {
829 if (m_brush.GetStyle() != wxTRANSPARENT)
830 {
831 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
832 {
833 gdk_gc_set_ts_origin( m_textGC,
834 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
835 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
836 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
837 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
838 } else
839 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
840 {
841 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
842 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
843 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
844 } else
845 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
846 {
847 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
848 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
849 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
850 } else
851 if (m_brush.GetStyle() == wxSTIPPLE)
852 {
853 gdk_gc_set_ts_origin( m_brushGC,
854 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
855 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
856 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
857 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
858 }
859 else
860 {
861 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
862 }
863 }
864
865 if (m_pen.GetStyle() != wxTRANSPARENT)
866 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
867 }
868
869 CalcBoundingBox( x, y );
870 CalcBoundingBox( x + width, y + height );
871 }
872
873 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
874 {
875 wxCHECK_RET( Ok(), wxT("invalid window dc") );
876
877 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
878
879 wxCoord xx = XLOG2DEV(x);
880 wxCoord yy = YLOG2DEV(y);
881 wxCoord ww = m_signX * XLOG2DEVREL(width);
882 wxCoord hh = m_signY * YLOG2DEVREL(height);
883 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
884
885 // CMB: handle -ve width and/or height
886 if (ww < 0) { ww = -ww; xx = xx - ww; }
887 if (hh < 0) { hh = -hh; yy = yy - hh; }
888
889 // CMB: if radius is zero use DrawRectangle() instead to avoid
890 // X drawing errors with small radii
891 if (rr == 0)
892 {
893 DrawRectangle( x, y, width, height );
894 return;
895 }
896
897 // CMB: draw nothing if transformed w or h is 0
898 if (ww == 0 || hh == 0) return;
899
900 // CMB: adjust size if outline is drawn otherwise the result is
901 // 1 pixel too wide and high
902 if (m_pen.GetStyle() != wxTRANSPARENT)
903 {
904 ww--;
905 hh--;
906 }
907
908 if (m_window)
909 {
910 // CMB: ensure dd is not larger than rectangle otherwise we
911 // get an hour glass shape
912 wxCoord dd = 2 * rr;
913 if (dd > ww) dd = ww;
914 if (dd > hh) dd = hh;
915 rr = dd / 2;
916
917 if (m_brush.GetStyle() != wxTRANSPARENT)
918 {
919 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
920 {
921 gdk_gc_set_ts_origin( m_textGC,
922 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
923 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
924 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
925 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
926 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
927 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
928 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
929 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
930 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
931 } else
932 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
933 {
934 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
935 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
936 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
937 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
938 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
939 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
940 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
941 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
942 } else
943 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
944 {
945 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
946 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
947 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
948 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
949 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
950 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
951 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
952 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
953 } else
954 if (m_brush.GetStyle() == wxSTIPPLE)
955 {
956 gdk_gc_set_ts_origin( m_brushGC,
957 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
958 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
959 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
960 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
961 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
962 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
963 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
964 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
965 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
966 }
967 else
968 {
969 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
970 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
972 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
973 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
974 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
975 }
976 }
977
978 if (m_pen.GetStyle() != wxTRANSPARENT)
979 {
980 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
981 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
982 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
983 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
984 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
985 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
986 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
987 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
988 }
989 }
990
991 // this ignores the radius
992 CalcBoundingBox( x, y );
993 CalcBoundingBox( x + width, y + height );
994 }
995
996 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
997 {
998 wxCHECK_RET( Ok(), wxT("invalid window dc") );
999
1000 wxCoord xx = XLOG2DEV(x);
1001 wxCoord yy = YLOG2DEV(y);
1002 wxCoord ww = m_signX * XLOG2DEVREL(width);
1003 wxCoord hh = m_signY * YLOG2DEVREL(height);
1004
1005 // CMB: handle -ve width and/or height
1006 if (ww < 0) { ww = -ww; xx = xx - ww; }
1007 if (hh < 0) { hh = -hh; yy = yy - hh; }
1008
1009 if (m_window)
1010 {
1011 if (m_brush.GetStyle() != wxTRANSPARENT)
1012 {
1013 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1014 {
1015 gdk_gc_set_ts_origin( m_textGC,
1016 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1017 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1018 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1019 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1020 } else
1021 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1022 {
1023 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1024 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1025 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1026 } else
1027 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1028 {
1029 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1030 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1031 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1032 } else
1033 if (m_brush.GetStyle() == wxSTIPPLE)
1034 {
1035 gdk_gc_set_ts_origin( m_brushGC,
1036 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1037 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1038 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1039 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1040 }
1041 else
1042 {
1043 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1044 }
1045 }
1046
1047 if (m_pen.GetStyle() != wxTRANSPARENT)
1048 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1049 }
1050
1051 CalcBoundingBox( x, y );
1052 CalcBoundingBox( x + width, y + height );
1053 }
1054
1055 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1056 {
1057 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1058 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1059 }
1060
1061 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1062 wxCoord x, wxCoord y,
1063 bool useMask )
1064 {
1065 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1066
1067 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1068
1069 bool is_mono = (bitmap.GetBitmap() != NULL);
1070
1071 // scale/translate size and position
1072 int xx = XLOG2DEV(x);
1073 int yy = YLOG2DEV(y);
1074
1075 int w = bitmap.GetWidth();
1076 int h = bitmap.GetHeight();
1077
1078 CalcBoundingBox( x, y );
1079 CalcBoundingBox( x + w, y + h );
1080
1081 if (!m_window) return;
1082
1083 int ww = XLOG2DEVREL(w);
1084 int hh = YLOG2DEVREL(h);
1085
1086 // compare to current clipping region
1087 if (!m_currentClippingRegion.IsNull())
1088 {
1089 wxRegion tmp( xx,yy,ww,hh );
1090 tmp.Intersect( m_currentClippingRegion );
1091 if (tmp.IsEmpty())
1092 return;
1093 }
1094
1095 // scale bitmap if required
1096 wxBitmap use_bitmap = bitmap;
1097 if ((w != ww) || (h != hh))
1098 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1099
1100 #if !GTK_CHECK_VERSION(2,2,0)
1101 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1102 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1103 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1104 // and also creates the mask as a side-effect:
1105 use_bitmap.GetPixmap();
1106 #endif
1107
1108 // apply mask if any
1109 GdkBitmap *mask = (GdkBitmap *) NULL;
1110 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1111
1112 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1113
1114 if (useMask && mask)
1115 {
1116 if (!m_currentClippingRegion.IsNull())
1117 {
1118 GdkColor col;
1119 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1120 GdkGC *gc = gdk_gc_new( new_mask );
1121 col.pixel = 0;
1122 gdk_gc_set_foreground( gc, &col );
1123 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1124 col.pixel = 0;
1125 gdk_gc_set_background( gc, &col );
1126 col.pixel = 1;
1127 gdk_gc_set_foreground( gc, &col );
1128 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1129 gdk_gc_set_clip_origin( gc, -xx, -yy );
1130 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1131 gdk_gc_set_stipple( gc, mask );
1132 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1133 g_object_unref (gc);
1134 }
1135
1136 if (is_mono)
1137 {
1138 if (new_mask)
1139 gdk_gc_set_clip_mask( m_textGC, new_mask );
1140 else
1141 gdk_gc_set_clip_mask( m_textGC, mask );
1142 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1143 }
1144 else
1145 {
1146 if (new_mask)
1147 gdk_gc_set_clip_mask( m_penGC, new_mask );
1148 else
1149 gdk_gc_set_clip_mask( m_penGC, mask );
1150 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1151 }
1152 }
1153
1154 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1155 // drawing a mono-bitmap (XBitmap) we use the current text GC
1156 if (is_mono)
1157 {
1158 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1159 GdkGC *gc = gdk_gc_new( bitmap2 );
1160 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1161 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1162 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1163
1164 gdk_draw_drawable( m_window, m_textGC, bitmap2, 0, 0, xx, yy, -1, -1 );
1165
1166 g_object_unref (bitmap2);
1167 g_object_unref (gc);
1168 }
1169 else
1170 {
1171 #if GTK_CHECK_VERSION(2,2,0)
1172 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1173 {
1174 gdk_draw_pixbuf(m_window, m_penGC,
1175 use_bitmap.GetPixbuf(),
1176 0, 0, xx, yy, -1, -1,
1177 GDK_RGB_DITHER_NORMAL, xx, yy);
1178 }
1179 else
1180 #endif
1181 {
1182 gdk_draw_drawable(m_window, m_penGC,
1183 use_bitmap.GetPixmap(),
1184 0, 0, xx, yy, -1, -1);
1185 }
1186 }
1187
1188 // remove mask again if any
1189 if (useMask && mask)
1190 {
1191 if (is_mono)
1192 {
1193 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1194 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1195 if (!m_currentClippingRegion.IsNull())
1196 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1197 }
1198 else
1199 {
1200 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1201 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1202 if (!m_currentClippingRegion.IsNull())
1203 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1204 }
1205 }
1206
1207 if (new_mask)
1208 g_object_unref (new_mask);
1209 }
1210
1211 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1212 wxCoord width, wxCoord height,
1213 wxDC *source,
1214 wxCoord xsrc, wxCoord ysrc,
1215 int logical_func,
1216 bool useMask,
1217 wxCoord xsrcMask, wxCoord ysrcMask )
1218 {
1219 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1220
1221 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1222
1223 if (!m_window) return false;
1224
1225 // transform the source DC coords to the device ones
1226 xsrc = source->XLOG2DEV(xsrc);
1227 ysrc = source->YLOG2DEV(ysrc);
1228
1229 wxClientDC *srcDC = (wxClientDC*)source;
1230 wxMemoryDC *memDC = (wxMemoryDC*)source;
1231
1232 bool use_bitmap_method = false;
1233 bool is_mono = false;
1234
1235 if (xsrcMask == -1 && ysrcMask == -1)
1236 {
1237 xsrcMask = xsrc;
1238 ysrcMask = ysrc;
1239 }
1240
1241 if (srcDC->m_isMemDC)
1242 {
1243 if (!memDC->m_selected.Ok()) return false;
1244
1245 is_mono = (memDC->m_selected.GetDepth() == 1);
1246
1247 // we use the "XCopyArea" way to copy a memory dc into
1248 // a different window if the memory dc BOTH
1249 // a) doesn't have any mask or its mask isn't used
1250 // b) it is clipped
1251 // c) is not 1-bit
1252
1253 if (useMask && (memDC->m_selected.GetMask()))
1254 {
1255 // we HAVE TO use the direct way for memory dcs
1256 // that have mask since the XCopyArea doesn't know
1257 // about masks
1258 use_bitmap_method = true;
1259 }
1260 else if (is_mono)
1261 {
1262 // we HAVE TO use the direct way for memory dcs
1263 // that are bitmaps because XCopyArea doesn't cope
1264 // with different bit depths
1265 use_bitmap_method = true;
1266 }
1267 else if ((xsrc == 0) && (ysrc == 0) &&
1268 (width == memDC->m_selected.GetWidth()) &&
1269 (height == memDC->m_selected.GetHeight()))
1270 {
1271 // we SHOULD use the direct way if all of the bitmap
1272 // in the memory dc is copied in which case XCopyArea
1273 // wouldn't be able able to boost performace by reducing
1274 // the area to be scaled
1275 use_bitmap_method = true;
1276 }
1277 else
1278 {
1279 use_bitmap_method = false;
1280 }
1281 }
1282
1283 CalcBoundingBox( xdest, ydest );
1284 CalcBoundingBox( xdest + width, ydest + height );
1285
1286 // scale/translate size and position
1287 wxCoord xx = XLOG2DEV(xdest);
1288 wxCoord yy = YLOG2DEV(ydest);
1289
1290 wxCoord ww = XLOG2DEVREL(width);
1291 wxCoord hh = YLOG2DEVREL(height);
1292
1293 // compare to current clipping region
1294 if (!m_currentClippingRegion.IsNull())
1295 {
1296 wxRegion tmp( xx,yy,ww,hh );
1297 tmp.Intersect( m_currentClippingRegion );
1298 if (tmp.IsEmpty())
1299 return true;
1300 }
1301
1302 int old_logical_func = m_logicalFunction;
1303 SetLogicalFunction( logical_func );
1304
1305 if (use_bitmap_method)
1306 {
1307 // scale/translate bitmap size
1308 wxCoord bm_width = memDC->m_selected.GetWidth();
1309 wxCoord bm_height = memDC->m_selected.GetHeight();
1310
1311 // Get clip coords for the bitmap. If we don't
1312 // use wxBitmap::Rescale(), which can clip the
1313 // bitmap, these are the same as the original
1314 // coordinates
1315 wxCoord cx = xx;
1316 wxCoord cy = yy;
1317 wxCoord cw = ww;
1318 wxCoord ch = hh;
1319
1320 // interpret userscale of src too
1321 double xsc,ysc;
1322 memDC->GetUserScale(&xsc,&ysc);
1323 bm_width = (int) (bm_width / xsc);
1324 bm_height = (int) (bm_height / ysc);
1325
1326 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1327 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1328
1329 // Scale bitmap if required
1330 wxBitmap use_bitmap;
1331 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1332 {
1333 // This indicates that the blitting code below will get
1334 // a clipped bitmap and therefore needs to move the origin
1335 // accordingly
1336 wxRegion tmp( xx,yy,ww,hh );
1337 tmp.Intersect( m_currentClippingRegion );
1338 tmp.GetBox(cx,cy,cw,ch);
1339
1340 // Scale and clipped bitmap
1341 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1342 }
1343 else
1344 {
1345 // Don't scale bitmap
1346 use_bitmap = memDC->m_selected;
1347 }
1348
1349 // apply mask if any
1350 GdkBitmap *mask = (GdkBitmap *) NULL;
1351 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1352
1353 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1354
1355 if (useMask && mask)
1356 {
1357 if (!m_currentClippingRegion.IsNull())
1358 {
1359 GdkColor col;
1360 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1361 GdkGC *gc = gdk_gc_new( new_mask );
1362 col.pixel = 0;
1363 gdk_gc_set_foreground( gc, &col );
1364 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1365 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1366 col.pixel = 0;
1367 gdk_gc_set_background( gc, &col );
1368 col.pixel = 1;
1369 gdk_gc_set_foreground( gc, &col );
1370 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1371 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1372 gdk_gc_set_clip_origin( gc, -cx, -cy );
1373 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1374 gdk_gc_set_stipple( gc, mask );
1375 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1376 g_object_unref (gc);
1377 }
1378
1379 if (is_mono)
1380 {
1381 if (new_mask)
1382 {
1383 gdk_gc_set_clip_mask( m_textGC, new_mask );
1384 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1385 }
1386 else
1387 {
1388 gdk_gc_set_clip_mask( m_textGC, mask );
1389 gdk_gc_set_clip_origin( m_textGC, cx-xsrcMask, cy-ysrcMask );
1390 }
1391 }
1392 else
1393 {
1394 if (new_mask)
1395 {
1396 gdk_gc_set_clip_mask( m_penGC, new_mask );
1397 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1398 }
1399 else
1400 {
1401 gdk_gc_set_clip_mask( m_penGC, mask );
1402 gdk_gc_set_clip_origin( m_penGC, cx-xsrcMask, cy-ysrcMask );
1403 }
1404 }
1405 }
1406
1407 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1408 // drawing a mono-bitmap (XBitmap) we use the current text GC
1409
1410 if (is_mono)
1411 {
1412 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1413 GdkGC *gc = gdk_gc_new( bitmap );
1414 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1415 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1416 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1417
1418 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1419
1420 g_object_unref (bitmap);
1421 g_object_unref (gc);
1422 }
1423 else
1424 {
1425 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1426 gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1427 }
1428
1429 // remove mask again if any
1430 if (useMask && mask)
1431 {
1432 if (is_mono)
1433 {
1434 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1435 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1436 if (!m_currentClippingRegion.IsNull())
1437 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1438 }
1439 else
1440 {
1441 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1442 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1443 if (!m_currentClippingRegion.IsNull())
1444 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1445 }
1446 }
1447
1448 if (new_mask)
1449 g_object_unref (new_mask);
1450 }
1451 else // use_bitmap_method
1452 {
1453 if ((width != ww) || (height != hh))
1454 {
1455 // get clip coords
1456 wxRegion tmp( xx,yy,ww,hh );
1457 tmp.Intersect( m_currentClippingRegion );
1458 wxCoord cx,cy,cw,ch;
1459 tmp.GetBox(cx,cy,cw,ch);
1460
1461 // rescale bitmap
1462 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1463
1464 // draw scaled bitmap
1465 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1466 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1467 }
1468 else
1469 {
1470 // No scaling and not a memory dc with a mask either
1471
1472 // copy including child window contents
1473 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1474 gdk_draw_drawable( m_window, m_penGC,
1475 srcDC->GetWindow(),
1476 xsrc, ysrc, xx, yy,
1477 width, height );
1478 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1479 }
1480 }
1481
1482 SetLogicalFunction( old_logical_func );
1483
1484 return true;
1485 }
1486
1487 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1488 {
1489 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1490
1491 if (!m_window) return;
1492
1493 if (text.empty()) return;
1494
1495 x = XLOG2DEV(x);
1496 y = YLOG2DEV(y);
1497
1498 wxCHECK_RET( m_context, wxT("no Pango context") );
1499 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1500 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1501
1502 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1503
1504 const wxCharBuffer data = wxGTK_CONV( text );
1505 if ( !data )
1506 return;
1507 const size_t datalen = strlen(data);
1508 pango_layout_set_text( m_layout, data, datalen);
1509
1510 if (underlined)
1511 {
1512 PangoAttrList *attrs = pango_attr_list_new();
1513 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1514 a->start_index = 0;
1515 a->end_index = datalen;
1516 pango_attr_list_insert(attrs, a);
1517 pango_layout_set_attributes(m_layout, attrs);
1518 pango_attr_list_unref(attrs);
1519 }
1520
1521 int w,h;
1522
1523 if (fabs(m_scaleY - 1.0) > 0.00001)
1524 {
1525 // If there is a user or actually any scale applied to
1526 // the device context, scale the font.
1527
1528 // scale font description
1529 gint oldSize = pango_font_description_get_size( m_fontdesc );
1530 double size = oldSize;
1531 size = size * m_scaleY;
1532 pango_font_description_set_size( m_fontdesc, (gint)size );
1533
1534 // actually apply scaled font
1535 pango_layout_set_font_description( m_layout, m_fontdesc );
1536
1537 pango_layout_get_pixel_size( m_layout, &w, &h );
1538 if ( m_backgroundMode == wxSOLID )
1539 {
1540 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1541 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1542 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1543 }
1544
1545 // Draw layout.
1546 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1547
1548 // reset unscaled size
1549 pango_font_description_set_size( m_fontdesc, oldSize );
1550
1551 // actually apply unscaled font
1552 pango_layout_set_font_description( m_layout, m_fontdesc );
1553 }
1554 else
1555 {
1556 pango_layout_get_pixel_size( m_layout, &w, &h );
1557 if ( m_backgroundMode == wxSOLID )
1558 {
1559 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1560 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1561 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1562 }
1563 // Draw layout.
1564 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1565 }
1566
1567 if (underlined)
1568 {
1569 // undo underline attributes setting:
1570 pango_layout_set_attributes(m_layout, NULL);
1571 }
1572
1573 wxCoord width = w;
1574 wxCoord height = h;
1575
1576 width = wxCoord(width / m_scaleX);
1577 height = wxCoord(height / m_scaleY);
1578 CalcBoundingBox (x + width, y + height);
1579 CalcBoundingBox (x, y);
1580 }
1581
1582
1583 // TODO: There is an example of rotating text with GTK2 that would probably be
1584 // a better approach here:
1585 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1586
1587 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1588 {
1589 if (!m_window || text.empty())
1590 return;
1591
1592 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1593
1594 if ( wxIsNullDouble(angle) )
1595 {
1596 DrawText(text, x, y);
1597 return;
1598 }
1599
1600 wxCoord w;
1601 wxCoord h;
1602
1603 // TODO: implement later without GdkFont for GTK 2.0
1604 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1605
1606 // draw the string normally
1607 wxBitmap src(w, h);
1608 wxMemoryDC dc;
1609 dc.SelectObject(src);
1610 dc.SetFont(GetFont());
1611 dc.SetBackground(*wxBLACK_BRUSH);
1612 dc.SetBrush(*wxBLACK_BRUSH);
1613 dc.Clear();
1614 dc.SetTextForeground( *wxWHITE );
1615 dc.DrawText(text, 0, 0);
1616 dc.SelectObject(wxNullBitmap);
1617
1618 // Calculate the size of the rotated bounding box.
1619 double rad = DegToRad(angle);
1620 double dx = cos(rad),
1621 dy = sin(rad);
1622
1623 // the rectngle vertices are counted clockwise with the first one being at
1624 // (0, 0) (or, rather, at (x, y))
1625 double x2 = w*dx,
1626 y2 = -w*dy; // y axis points to the bottom, hence minus
1627 double x4 = h*dy,
1628 y4 = h*dx;
1629 double x3 = x4 + x2,
1630 y3 = y4 + y2;
1631
1632 // calc max and min
1633 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1634 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1635 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1636 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1637
1638
1639 wxImage image = src.ConvertToImage();
1640
1641 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1642 m_textForegroundColour.Green(),
1643 m_textForegroundColour.Blue() );
1644 image = image.Rotate( rad, wxPoint(0,0) );
1645
1646 int i_angle = (int) angle;
1647 i_angle = i_angle % 360;
1648 if (i_angle < 0)
1649 i_angle += 360;
1650 int xoffset = 0;
1651 if ((i_angle >= 90.0) && (i_angle < 270.0))
1652 xoffset = image.GetWidth();
1653 int yoffset = 0;
1654 if ((i_angle >= 0.0) && (i_angle < 180.0))
1655 yoffset = image.GetHeight();
1656
1657 if ((i_angle >= 0) && (i_angle < 90))
1658 yoffset -= (int)( cos(rad)*h );
1659 if ((i_angle >= 90) && (i_angle < 180))
1660 xoffset -= (int)( sin(rad)*h );
1661 if ((i_angle >= 180) && (i_angle < 270))
1662 yoffset -= (int)( cos(rad)*h );
1663 if ((i_angle >= 270) && (i_angle < 360))
1664 xoffset -= (int)( sin(rad)*h );
1665
1666 int i_x = x - xoffset;
1667 int i_y = y - yoffset;
1668
1669 src = image;
1670 DoDrawBitmap( src, i_x, i_y, true );
1671
1672
1673 // it would be better to draw with non underlined font and draw the line
1674 // manually here (it would be more straight...)
1675 #if 0
1676 if ( m_font.GetUnderlined() )
1677 {
1678 gdk_draw_line( m_window, m_textGC,
1679 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1680 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1681 }
1682 #endif // 0
1683
1684 // update the bounding box
1685 CalcBoundingBox(x + minX, y + minY);
1686 CalcBoundingBox(x + maxX, y + maxY);
1687 }
1688
1689 void wxWindowDC::DoGetTextExtent(const wxString &string,
1690 wxCoord *width, wxCoord *height,
1691 wxCoord *descent, wxCoord *externalLeading,
1692 wxFont *theFont) const
1693 {
1694 if ( width )
1695 *width = 0;
1696 if ( height )
1697 *height = 0;
1698 if ( descent )
1699 *descent = 0;
1700 if ( externalLeading )
1701 *externalLeading = 0;
1702
1703 if (string.empty())
1704 return;
1705
1706 // ensure that theFont is always non-NULL
1707 if ( !theFont || !theFont->Ok() )
1708 theFont = wx_const_cast(wxFont *, &m_font);
1709
1710 // and use it if it's valid
1711 if ( theFont->Ok() )
1712 {
1713 pango_layout_set_font_description
1714 (
1715 m_layout,
1716 theFont->GetNativeFontInfo()->description
1717 );
1718 }
1719
1720 // Set layout's text
1721 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1722 if ( !dataUTF8 )
1723 {
1724 // hardly ideal, but what else can we do if conversion failed?
1725 return;
1726 }
1727
1728 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1729
1730 if (descent)
1731 {
1732 int h;
1733 pango_layout_get_pixel_size( m_layout, width, &h );
1734 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1735 int baseline = pango_layout_iter_get_baseline(iter);
1736 pango_layout_iter_free(iter);
1737 *descent = h - PANGO_PIXELS(baseline);
1738
1739 if (height)
1740 *height = (wxCoord) h;
1741 }
1742 else
1743 {
1744 pango_layout_get_pixel_size( m_layout, width, height );
1745 }
1746
1747 // Reset old font description
1748 if (theFont)
1749 pango_layout_set_font_description( m_layout, m_fontdesc );
1750 }
1751
1752 wxCoord wxWindowDC::GetCharWidth() const
1753 {
1754 pango_layout_set_text( m_layout, "H", 1 );
1755 int w;
1756 pango_layout_get_pixel_size( m_layout, &w, NULL );
1757 return w;
1758 }
1759
1760 wxCoord wxWindowDC::GetCharHeight() const
1761 {
1762 pango_layout_set_text( m_layout, "H", 1 );
1763 int h;
1764 pango_layout_get_pixel_size( m_layout, NULL, &h );
1765 return h;
1766 }
1767
1768 void wxWindowDC::Clear()
1769 {
1770 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1771
1772 if (!m_window) return;
1773
1774 // VZ: the code below results in infinite recursion and crashes when
1775 // dc.Clear() is done from OnPaint() so I disable it for now.
1776 // I don't know what the correct fix is but Clear() surely should not
1777 // reenter OnPaint()!
1778 #if 0
1779 /* - we either are a memory dc or have a window as the
1780 owner. anything else shouldn't happen.
1781 - we don't use gdk_window_clear() as we don't set
1782 the window's background colour anymore. it is too
1783 much pain to keep the DC's and the window's back-
1784 ground colour in synch. */
1785
1786 if (m_owner)
1787 {
1788 m_owner->Clear();
1789 return;
1790 }
1791
1792 if (m_isMemDC)
1793 {
1794 int width,height;
1795 GetSize( &width, &height );
1796 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1797 return;
1798 }
1799 #else // 1
1800 int width,height;
1801 GetSize( &width, &height );
1802 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1803 #endif // 0/1
1804 }
1805
1806 void wxWindowDC::SetFont( const wxFont &font )
1807 {
1808 m_font = font;
1809
1810 if (m_font.Ok())
1811 {
1812 if (m_fontdesc)
1813 pango_font_description_free( m_fontdesc );
1814
1815 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1816
1817
1818 if (m_owner)
1819 {
1820 PangoContext *oldContext = m_context;
1821
1822 m_context = m_owner->GtkGetPangoDefaultContext();
1823
1824 // If we switch back/forth between different contexts
1825 // we also have to create a new layout. I think so,
1826 // at least, and it doesn't hurt to do it.
1827 if (oldContext != m_context)
1828 {
1829 if (m_layout)
1830 g_object_unref (m_layout);
1831
1832 m_layout = pango_layout_new( m_context );
1833 }
1834 }
1835
1836 pango_layout_set_font_description( m_layout, m_fontdesc );
1837 }
1838 }
1839
1840 void wxWindowDC::SetPen( const wxPen &pen )
1841 {
1842 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1843
1844 if (m_pen == pen) return;
1845
1846 m_pen = pen;
1847
1848 if (!m_pen.Ok()) return;
1849
1850 if (!m_window) return;
1851
1852 gint width = m_pen.GetWidth();
1853 if (width <= 0)
1854 {
1855 // CMB: if width is non-zero scale it with the dc
1856 width = 1;
1857 }
1858 else
1859 {
1860 // X doesn't allow different width in x and y and so we take
1861 // the average
1862 double w = 0.5 +
1863 ( fabs((double) XLOG2DEVREL(width)) +
1864 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1865 width = (int)w;
1866 if ( !width )
1867 {
1868 // width can't be 0 or an internal GTK error occurs inside
1869 // gdk_gc_set_dashes() below
1870 width = 1;
1871 }
1872 }
1873
1874 static const wxGTKDash dotted[] = {1, 1};
1875 static const wxGTKDash short_dashed[] = {2, 2};
1876 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1877 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1878
1879 // We express dash pattern in pen width unit, so we are
1880 // independent of zoom factor and so on...
1881 int req_nb_dash;
1882 const wxGTKDash *req_dash;
1883
1884 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1885 switch (m_pen.GetStyle())
1886 {
1887 case wxUSER_DASH:
1888 {
1889 lineStyle = GDK_LINE_ON_OFF_DASH;
1890 req_nb_dash = m_pen.GetDashCount();
1891 req_dash = (wxGTKDash*)m_pen.GetDash();
1892 break;
1893 }
1894 case wxDOT:
1895 {
1896 lineStyle = GDK_LINE_ON_OFF_DASH;
1897 req_nb_dash = 2;
1898 req_dash = dotted;
1899 break;
1900 }
1901 case wxLONG_DASH:
1902 {
1903 lineStyle = GDK_LINE_ON_OFF_DASH;
1904 req_nb_dash = 2;
1905 req_dash = wxCoord_dashed;
1906 break;
1907 }
1908 case wxSHORT_DASH:
1909 {
1910 lineStyle = GDK_LINE_ON_OFF_DASH;
1911 req_nb_dash = 2;
1912 req_dash = short_dashed;
1913 break;
1914 }
1915 case wxDOT_DASH:
1916 {
1917 // lineStyle = GDK_LINE_DOUBLE_DASH;
1918 lineStyle = GDK_LINE_ON_OFF_DASH;
1919 req_nb_dash = 4;
1920 req_dash = dotted_dashed;
1921 break;
1922 }
1923
1924 case wxTRANSPARENT:
1925 case wxSTIPPLE_MASK_OPAQUE:
1926 case wxSTIPPLE:
1927 case wxSOLID:
1928 default:
1929 {
1930 lineStyle = GDK_LINE_SOLID;
1931 req_dash = (wxGTKDash*)NULL;
1932 req_nb_dash = 0;
1933 break;
1934 }
1935 }
1936
1937 if (req_dash && req_nb_dash)
1938 {
1939 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1940 if (real_req_dash)
1941 {
1942 for (int i = 0; i < req_nb_dash; i++)
1943 real_req_dash[i] = req_dash[i] * width;
1944 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1945 delete[] real_req_dash;
1946 }
1947 else
1948 {
1949 // No Memory. We use non-scaled dash pattern...
1950 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1951 }
1952 }
1953
1954 GdkCapStyle capStyle = GDK_CAP_ROUND;
1955 switch (m_pen.GetCap())
1956 {
1957 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1958 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1959 case wxCAP_ROUND:
1960 default:
1961 {
1962 if (width <= 1)
1963 {
1964 width = 0;
1965 capStyle = GDK_CAP_NOT_LAST;
1966 }
1967 else
1968 {
1969 capStyle = GDK_CAP_ROUND;
1970 }
1971 break;
1972 }
1973 }
1974
1975 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1976 switch (m_pen.GetJoin())
1977 {
1978 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1979 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1980 case wxJOIN_ROUND:
1981 default: { joinStyle = GDK_JOIN_ROUND; break; }
1982 }
1983
1984 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1985
1986 m_pen.GetColour().CalcPixel( m_cmap );
1987 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1988 }
1989
1990 void wxWindowDC::SetBrush( const wxBrush &brush )
1991 {
1992 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1993
1994 if (m_brush == brush) return;
1995
1996 m_brush = brush;
1997
1998 if (!m_brush.Ok()) return;
1999
2000 if (!m_window) return;
2001
2002 m_brush.GetColour().CalcPixel( m_cmap );
2003 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2004
2005 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2006
2007 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2008 {
2009 if (m_brush.GetStipple()->GetPixmap())
2010 {
2011 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2012 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2013 }
2014 else
2015 {
2016 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2017 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetBitmap() );
2018 }
2019 }
2020
2021 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2022 {
2023 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2024 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2025 }
2026
2027 if (m_brush.IsHatch())
2028 {
2029 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2030 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2031 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2032 }
2033 }
2034
2035 void wxWindowDC::SetBackground( const wxBrush &brush )
2036 {
2037 /* CMB 21/7/98: Added SetBackground. Sets background brush
2038 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2039
2040 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2041
2042 if (m_backgroundBrush == brush) return;
2043
2044 m_backgroundBrush = brush;
2045
2046 if (!m_backgroundBrush.Ok()) return;
2047
2048 if (!m_window) return;
2049
2050 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2051 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2052 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2053 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2054 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2055
2056 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2057
2058 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2059 {
2060 if (m_backgroundBrush.GetStipple()->GetPixmap())
2061 {
2062 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2063 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2064 }
2065 else
2066 {
2067 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2068 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetBitmap() );
2069 }
2070 }
2071
2072 if (m_backgroundBrush.IsHatch())
2073 {
2074 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2075 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2076 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2077 }
2078 }
2079
2080 void wxWindowDC::SetLogicalFunction( int function )
2081 {
2082 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2083
2084 if (m_logicalFunction == function)
2085 return;
2086
2087 // VZ: shouldn't this be a CHECK?
2088 if (!m_window)
2089 return;
2090
2091 GdkFunction mode;
2092 switch (function)
2093 {
2094 case wxXOR: mode = GDK_XOR; break;
2095 case wxINVERT: mode = GDK_INVERT; break;
2096 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2097 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2098 case wxCLEAR: mode = GDK_CLEAR; break;
2099 case wxSET: mode = GDK_SET; break;
2100 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2101 case wxAND: mode = GDK_AND; break;
2102 case wxOR: mode = GDK_OR; break;
2103 case wxEQUIV: mode = GDK_EQUIV; break;
2104 case wxNAND: mode = GDK_NAND; break;
2105 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2106 case wxCOPY: mode = GDK_COPY; break;
2107 case wxNO_OP: mode = GDK_NOOP; break;
2108 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2109
2110 // unsupported by GTK
2111 case wxNOR: mode = GDK_COPY; break;
2112 default:
2113 wxFAIL_MSG( wxT("unsupported logical function") );
2114 mode = GDK_COPY;
2115 }
2116
2117 m_logicalFunction = function;
2118
2119 gdk_gc_set_function( m_penGC, mode );
2120 gdk_gc_set_function( m_brushGC, mode );
2121
2122 // to stay compatible with wxMSW, we don't apply ROPs to the text
2123 // operations (i.e. DrawText/DrawRotatedText).
2124 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2125 gdk_gc_set_function( m_textGC, mode );
2126 }
2127
2128 void wxWindowDC::SetTextForeground( const wxColour &col )
2129 {
2130 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2131
2132 // don't set m_textForegroundColour to an invalid colour as we'd crash
2133 // later then (we use m_textForegroundColour.GetColor() without checking
2134 // in a few places)
2135 if ( !col.Ok() || (m_textForegroundColour == col) )
2136 return;
2137
2138 m_textForegroundColour = col;
2139
2140 if ( m_window )
2141 {
2142 m_textForegroundColour.CalcPixel( m_cmap );
2143 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2144 }
2145 }
2146
2147 void wxWindowDC::SetTextBackground( const wxColour &col )
2148 {
2149 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2150
2151 // same as above
2152 if ( !col.Ok() || (m_textBackgroundColour == col) )
2153 return;
2154
2155 m_textBackgroundColour = col;
2156
2157 if ( m_window )
2158 {
2159 m_textBackgroundColour.CalcPixel( m_cmap );
2160 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2161 }
2162 }
2163
2164 void wxWindowDC::SetBackgroundMode( int mode )
2165 {
2166 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2167
2168 m_backgroundMode = mode;
2169
2170 if (!m_window) return;
2171
2172 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2173 // transparent/solid background mode
2174
2175 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2176 {
2177 gdk_gc_set_fill( m_brushGC,
2178 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2179 }
2180 }
2181
2182 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2183 {
2184 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2185 }
2186
2187 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2188 {
2189 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2190
2191 if (!m_window) return;
2192
2193 wxRect rect;
2194 rect.x = XLOG2DEV(x);
2195 rect.y = YLOG2DEV(y);
2196 rect.width = XLOG2DEVREL(width);
2197 rect.height = YLOG2DEVREL(height);
2198
2199 if (!m_currentClippingRegion.IsNull())
2200 m_currentClippingRegion.Intersect( rect );
2201 else
2202 m_currentClippingRegion.Union( rect );
2203
2204 #if USE_PAINT_REGION
2205 if (!m_paintClippingRegion.IsNull())
2206 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2207 #endif
2208
2209 wxCoord xx, yy, ww, hh;
2210 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2211 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2212
2213 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2214 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2215 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2216 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2217 }
2218
2219 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2220 {
2221 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2222
2223 if (region.Empty())
2224 {
2225 DestroyClippingRegion();
2226 return;
2227 }
2228
2229 if (!m_window) return;
2230
2231 if (!m_currentClippingRegion.IsNull())
2232 m_currentClippingRegion.Intersect( region );
2233 else
2234 m_currentClippingRegion.Union( region );
2235
2236 #if USE_PAINT_REGION
2237 if (!m_paintClippingRegion.IsNull())
2238 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2239 #endif
2240
2241 wxCoord xx, yy, ww, hh;
2242 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2243 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2244
2245 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2246 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2247 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2248 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2249 }
2250
2251 void wxWindowDC::DestroyClippingRegion()
2252 {
2253 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2254
2255 wxDC::DestroyClippingRegion();
2256
2257 m_currentClippingRegion.Clear();
2258
2259 #if USE_PAINT_REGION
2260 if (!m_paintClippingRegion.IsEmpty())
2261 m_currentClippingRegion.Union( m_paintClippingRegion );
2262 #endif
2263
2264 if (!m_window) return;
2265
2266 if (m_currentClippingRegion.IsEmpty())
2267 {
2268 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2269 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2270 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2271 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2272 }
2273 else
2274 {
2275 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2276 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2277 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2278 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2279 }
2280 }
2281
2282 void wxWindowDC::Destroy()
2283 {
2284 if (m_penGC) wxFreePoolGC( m_penGC );
2285 m_penGC = (GdkGC*) NULL;
2286 if (m_brushGC) wxFreePoolGC( m_brushGC );
2287 m_brushGC = (GdkGC*) NULL;
2288 if (m_textGC) wxFreePoolGC( m_textGC );
2289 m_textGC = (GdkGC*) NULL;
2290 if (m_bgGC) wxFreePoolGC( m_bgGC );
2291 m_bgGC = (GdkGC*) NULL;
2292 }
2293
2294 void wxWindowDC::ComputeScaleAndOrigin()
2295 {
2296 const wxRealPoint origScale(m_scaleX, m_scaleY);
2297
2298 wxDC::ComputeScaleAndOrigin();
2299
2300 // if scale has changed call SetPen to recalulate the line width
2301 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2302 {
2303 // this is a bit artificial, but we need to force wxDC to think the pen
2304 // has changed
2305 wxPen pen = m_pen;
2306 m_pen = wxNullPen;
2307 SetPen( pen );
2308 }
2309 }
2310
2311 // Resolution in pixels per logical inch
2312 wxSize wxWindowDC::GetPPI() const
2313 {
2314 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2315 }
2316
2317 int wxWindowDC::GetDepth() const
2318 {
2319 return gdk_drawable_get_depth(m_window);
2320 }
2321
2322
2323 //-----------------------------------------------------------------------------
2324 // wxPaintDC
2325 //-----------------------------------------------------------------------------
2326
2327 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2328
2329 // Limit the paint region to the window size. Sometimes
2330 // the paint region is too big, and this risks X11 errors
2331 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2332 {
2333 wxRect originalRect = region.GetBox();
2334 wxRect rect(originalRect);
2335 if (rect.width + rect.x > sz.x)
2336 rect.width = sz.x - rect.x;
2337 if (rect.height + rect.y > sz.y)
2338 rect.height = sz.y - rect.y;
2339 if (rect != originalRect)
2340 {
2341 region = wxRegion(rect);
2342 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2343 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2344 rect.x, rect.y, rect.width, rect.height);
2345 }
2346 }
2347
2348 wxPaintDC::wxPaintDC( wxWindow *win )
2349 : wxClientDC( win )
2350 {
2351 #if USE_PAINT_REGION
2352 if (!win->m_clipPaintRegion)
2353 return;
2354
2355 wxSize sz = win->GetSize();
2356 m_paintClippingRegion = win->GetUpdateRegion();
2357 wxLimitRegionToSize(m_paintClippingRegion, sz);
2358
2359 GdkRegion *region = m_paintClippingRegion.GetRegion();
2360 if ( region )
2361 {
2362 m_currentClippingRegion.Union( m_paintClippingRegion );
2363 wxLimitRegionToSize(m_currentClippingRegion, sz);
2364
2365 if (sz.x <= 0 || sz.y <= 0)
2366 return ;
2367
2368 gdk_gc_set_clip_region( m_penGC, region );
2369 gdk_gc_set_clip_region( m_brushGC, region );
2370 gdk_gc_set_clip_region( m_textGC, region );
2371 gdk_gc_set_clip_region( m_bgGC, region );
2372 }
2373 #endif // USE_PAINT_REGION
2374 }
2375
2376 //-----------------------------------------------------------------------------
2377 // wxClientDC
2378 //-----------------------------------------------------------------------------
2379
2380 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2381
2382 wxClientDC::wxClientDC( wxWindow *win )
2383 : wxWindowDC( win )
2384 {
2385 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2386
2387 #ifdef __WXUNIVERSAL__
2388 wxPoint ptOrigin = win->GetClientAreaOrigin();
2389 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2390 wxSize size = win->GetClientSize();
2391 SetClippingRegion(wxPoint(0, 0), size);
2392 #endif // __WXUNIVERSAL__
2393 }
2394
2395 void wxClientDC::DoGetSize(int *width, int *height) const
2396 {
2397 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2398
2399 m_owner->GetClientSize( width, height );
2400 }
2401
2402 // ----------------------------------------------------------------------------
2403 // wxDCModule
2404 // ----------------------------------------------------------------------------
2405
2406 class wxDCModule : public wxModule
2407 {
2408 public:
2409 bool OnInit();
2410 void OnExit();
2411
2412 private:
2413 DECLARE_DYNAMIC_CLASS(wxDCModule)
2414 };
2415
2416 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2417
2418 bool wxDCModule::OnInit()
2419 {
2420 wxInitGCPool();
2421 return true;
2422 }
2423
2424 void wxDCModule::OnExit()
2425 {
2426 wxCleanUpGCPool();
2427 }
wxWidgets (Impactor)