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Make wxGTK's wxScrolledWindow set m_x/xScrollLines to 0
[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XCopyPlane XCOPYPLANE
15 #endif
16
17 #include "wx/dcclient.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/window.h"
21 #include "wx/log.h"
22 #include "wx/dcmemory.h"
23 #include "wx/math.h" // for floating-point functions
24 #include "wx/image.h"
25 #include "wx/module.h"
26 #endif
27
28 #include "wx/fontutil.h"
29 #include "wx/scrolwin.h"
30
31 #include "wx/gtk/win_gtk.h"
32 #include "wx/gtk/private.h"
33
34 #include <gdk/gdkx.h>
35
36 //-----------------------------------------------------------------------------
37 // local defines
38 //-----------------------------------------------------------------------------
39
40 #define USE_PAINT_REGION 1
41
42 //-----------------------------------------------------------------------------
43 // local data
44 //-----------------------------------------------------------------------------
45
46 #include "bdiag.xbm"
47 #include "fdiag.xbm"
48 #include "cdiag.xbm"
49 #include "horiz.xbm"
50 #include "verti.xbm"
51 #include "cross.xbm"
52 #define num_hatches 6
53
54 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
55 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
56
57
58 static GdkPixmap *hatches[num_hatches];
59 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
60
61 extern GtkWidget *wxGetRootWindow();
62
63 //-----------------------------------------------------------------------------
64 // constants
65 //-----------------------------------------------------------------------------
66
67 const double RAD2DEG = 180.0 / M_PI;
68
69 // ----------------------------------------------------------------------------
70 // private functions
71 // ----------------------------------------------------------------------------
72
73 static inline double dmax(double a, double b) { return a > b ? a : b; }
74 static inline double dmin(double a, double b) { return a < b ? a : b; }
75
76 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
77
78 //-----------------------------------------------------------------------------
79 // temporary implementation of the missing GDK function
80 //-----------------------------------------------------------------------------
81
82 #include "gdk/gdkprivate.h"
83
84 static
85 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94 {
95 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
96 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
98
99 gint src_width, src_height;
100 gdk_drawable_get_size(src, &src_width, &src_height);
101 if (width == -1) width = src_width;
102 if (height == -1) height = src_height;
103
104 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
105 GDK_WINDOW_XID(src),
106 GDK_WINDOW_XID(drawable),
107 GDK_GC_XGC(gc),
108 xsrc, ysrc,
109 width, height,
110 0, 0,
111 1 );
112 }
113
114 //-----------------------------------------------------------------------------
115 // Implement Pool of Graphic contexts. Creating them takes too much time.
116 //-----------------------------------------------------------------------------
117
118 enum wxPoolGCType
119 {
120 wxGC_ERROR = 0,
121 wxTEXT_MONO,
122 wxBG_MONO,
123 wxPEN_MONO,
124 wxBRUSH_MONO,
125 wxTEXT_COLOUR,
126 wxBG_COLOUR,
127 wxPEN_COLOUR,
128 wxBRUSH_COLOUR,
129 wxTEXT_SCREEN,
130 wxBG_SCREEN,
131 wxPEN_SCREEN,
132 wxBRUSH_SCREEN
133 };
134
135 struct wxGC
136 {
137 GdkGC *m_gc;
138 wxPoolGCType m_type;
139 bool m_used;
140 };
141
142 #define GC_POOL_ALLOC_SIZE 100
143
144 static int wxGCPoolSize = 0;
145
146 static wxGC *wxGCPool = NULL;
147
148 static void wxInitGCPool()
149 {
150 // This really could wait until the first call to
151 // wxGetPoolGC, but we will make the first allocation
152 // now when other initialization is being performed.
153
154 // Set initial pool size.
155 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
156
157 // Allocate initial pool.
158 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
159 if (wxGCPool == NULL)
160 {
161 // If we cannot malloc, then fail with error
162 // when debug is enabled. If debug is not enabled,
163 // the problem will eventually get caught
164 // in wxGetPoolGC.
165 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
166 return;
167 }
168
169 // Zero initial pool.
170 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
171 }
172
173 static void wxCleanUpGCPool()
174 {
175 for (int i = 0; i < wxGCPoolSize; i++)
176 {
177 if (wxGCPool[i].m_gc)
178 g_object_unref (wxGCPool[i].m_gc);
179 }
180
181 free(wxGCPool);
182 wxGCPool = NULL;
183 wxGCPoolSize = 0;
184 }
185
186 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
187 {
188 wxGC *pptr;
189
190 // Look for an available GC.
191 for (int i = 0; i < wxGCPoolSize; i++)
192 {
193 if (!wxGCPool[i].m_gc)
194 {
195 wxGCPool[i].m_gc = gdk_gc_new( window );
196 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
197 wxGCPool[i].m_type = type;
198 wxGCPool[i].m_used = false;
199 }
200 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
201 {
202 wxGCPool[i].m_used = true;
203 return wxGCPool[i].m_gc;
204 }
205 }
206
207 // We did not find an available GC.
208 // We need to grow the GC pool.
209 pptr = (wxGC *)realloc(wxGCPool,
210 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
211 if (pptr != NULL)
212 {
213 // Initialize newly allocated pool.
214 wxGCPool = pptr;
215 memset(&wxGCPool[wxGCPoolSize], 0,
216 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
217
218 // Initialize entry we will return.
219 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
220 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
221 wxGCPool[wxGCPoolSize].m_type = type;
222 wxGCPool[wxGCPoolSize].m_used = true;
223
224 // Set new value of pool size.
225 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
226
227 // Return newly allocated entry.
228 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
229 }
230
231 // The realloc failed. Fall through to error.
232 wxFAIL_MSG( wxT("No GC available") );
233
234 return (GdkGC*) NULL;
235 }
236
237 static void wxFreePoolGC( GdkGC *gc )
238 {
239 for (int i = 0; i < wxGCPoolSize; i++)
240 {
241 if (wxGCPool[i].m_gc == gc)
242 {
243 wxGCPool[i].m_used = false;
244 return;
245 }
246 }
247
248 wxFAIL_MSG( wxT("Wrong GC") );
249 }
250
251 //-----------------------------------------------------------------------------
252 // wxWindowDC
253 //-----------------------------------------------------------------------------
254
255 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
256
257 wxWindowDC::wxWindowDC()
258 {
259 m_penGC = (GdkGC *) NULL;
260 m_brushGC = (GdkGC *) NULL;
261 m_textGC = (GdkGC *) NULL;
262 m_bgGC = (GdkGC *) NULL;
263 m_cmap = (GdkColormap *) NULL;
264 m_isMemDC = false;
265 m_isScreenDC = false;
266 m_owner = (wxWindow *)NULL;
267 m_context = (PangoContext *)NULL;
268 m_layout = (PangoLayout *)NULL;
269 m_fontdesc = (PangoFontDescription *)NULL;
270 }
271
272 wxWindowDC::wxWindowDC( wxWindow *window )
273 {
274 wxASSERT_MSG( window, wxT("DC needs a window") );
275
276 m_penGC = (GdkGC *) NULL;
277 m_brushGC = (GdkGC *) NULL;
278 m_textGC = (GdkGC *) NULL;
279 m_bgGC = (GdkGC *) NULL;
280 m_cmap = (GdkColormap *) NULL;
281 m_owner = (wxWindow *)NULL;
282 m_isMemDC = false;
283 m_isScreenDC = false;
284 m_font = window->GetFont();
285
286 GtkWidget *widget = window->m_wxwindow;
287
288 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
289 // code should still be able to create wxClientDCs for them, so we will
290 // use the parent window here then.
291 if ( !widget )
292 {
293 window = window->GetParent();
294 widget = window->m_wxwindow;
295 }
296
297 wxASSERT_MSG( widget, wxT("DC needs a widget") );
298
299 m_context = window->GtkGetPangoDefaultContext();
300 m_layout = pango_layout_new( m_context );
301 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
302
303 GtkPizza *pizza = GTK_PIZZA( widget );
304 m_window = pizza->bin_window;
305
306 // Window not realized ?
307 if (!m_window)
308 {
309 // Don't report problems as per MSW.
310 m_ok = true;
311
312 return;
313 }
314
315 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
316
317 SetUpDC();
318
319 /* this must be done after SetUpDC, bacause SetUpDC calls the
320 repective SetBrush, SetPen, SetBackground etc functions
321 to set up the DC. SetBackground call m_owner->SetBackground
322 and this might not be desired as the standard dc background
323 is white whereas a window might assume gray to be the
324 standard (as e.g. wxStatusBar) */
325
326 m_owner = window;
327
328 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
329 {
330 // reverse sense
331 m_signX = -1;
332
333 // origin in the upper right corner
334 wxScrolledWindow *sw = wxDynamicCast( m_owner, wxScrolledWindow );
335 if (sw)
336 {
337 // We cannot use just the virtual size here, because
338 // the virtual size may be less than the visible area
339 // due to rounding errors of the scroll steps. If the
340 // horizontal scroll step is 10 pixels and the virtual
341 // area is 97 pixels, we should be able to see or scroll
342 // to 100 pixels, so the origin is at -100, not -97.
343 if (sw->GetScrollLines(wxHORIZONTAL) == 0)
344 {
345 int client_width = m_owner->GetClientSize().x;
346 m_deviceOriginX = client_width;
347 }
348 else
349 {
350 int scroll_step = 0;
351 sw->GetScrollPixelsPerUnit( &scroll_step, NULL );
352 int client_width = m_owner->GetClientSize().x;
353 int virtual_size = sw->GetVirtualSize().x;
354 int steps = (virtual_size + scroll_step - 1) / scroll_step;
355 int width = steps * scroll_step + (client_width % scroll_step);
356 m_deviceOriginX = width;
357 }
358 }
359 else
360 {
361 int client_width = m_owner->GetClientSize().x;
362 m_deviceOriginX = client_width;
363 }
364 }
365 }
366
367 wxWindowDC::~wxWindowDC()
368 {
369 Destroy();
370
371 if (m_layout)
372 g_object_unref (m_layout);
373 if (m_fontdesc)
374 pango_font_description_free( m_fontdesc );
375 }
376
377 void wxWindowDC::SetUpDC()
378 {
379 m_ok = true;
380
381 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
382
383 if (m_isScreenDC)
384 {
385 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
386 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
387 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
388 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
389 }
390 else
391 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
392 {
393 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
394 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
395 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
396 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
397 }
398 else
399 {
400 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
401 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
402 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
403 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
404 }
405
406 /* background colour */
407 m_backgroundBrush = *wxWHITE_BRUSH;
408 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
409 #ifdef __WXGTK24__
410 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
411 #else
412 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
413 #endif
414
415 /* m_textGC */
416 m_textForegroundColour.CalcPixel( m_cmap );
417 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
418
419 m_textBackgroundColour.CalcPixel( m_cmap );
420 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
421
422 gdk_gc_set_fill( m_textGC, GDK_SOLID );
423
424 /* m_penGC */
425 m_pen.GetColour().CalcPixel( m_cmap );
426 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
427 gdk_gc_set_background( m_penGC, bg_col );
428
429 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
430
431 /* m_brushGC */
432 m_brush.GetColour().CalcPixel( m_cmap );
433 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
434 gdk_gc_set_background( m_brushGC, bg_col );
435
436 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
437
438 /* m_bgGC */
439 gdk_gc_set_background( m_bgGC, bg_col );
440 gdk_gc_set_foreground( m_bgGC, bg_col );
441
442 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
443
444 /* ROPs */
445 gdk_gc_set_function( m_textGC, GDK_COPY );
446 gdk_gc_set_function( m_brushGC, GDK_COPY );
447 gdk_gc_set_function( m_penGC, GDK_COPY );
448
449 /* clipping */
450 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
451 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
452 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
453 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
454
455 if (!hatch_bitmap)
456 {
457 hatch_bitmap = hatches;
458 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
459 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
460 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
461 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
462 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
463 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
464 }
465 }
466
467 void wxWindowDC::DoGetSize( int* width, int* height ) const
468 {
469 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
470
471 m_owner->GetSize(width, height);
472 }
473
474 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
475 const wxColour & col, int style);
476
477 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
478 const wxColour& col, int style)
479 {
480 return wxDoFloodFill(this, x, y, col, style);
481 }
482
483 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
484 {
485 // Generic (and therefore rather inefficient) method.
486 // Could be improved.
487 wxMemoryDC memdc;
488 wxBitmap bitmap(1, 1);
489 memdc.SelectObject(bitmap);
490 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
491 memdc.SelectObject(wxNullBitmap);
492
493 wxImage image = bitmap.ConvertToImage();
494 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
495 return true;
496 }
497
498 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
499 {
500 wxCHECK_RET( Ok(), wxT("invalid window dc") );
501
502 if (m_pen.GetStyle() != wxTRANSPARENT)
503 {
504 if (m_window)
505 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
506
507 CalcBoundingBox(x1, y1);
508 CalcBoundingBox(x2, y2);
509 }
510 }
511
512 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
513 {
514 wxCHECK_RET( Ok(), wxT("invalid window dc") );
515
516 if (m_pen.GetStyle() != wxTRANSPARENT)
517 {
518 int w = 0;
519 int h = 0;
520 GetSize( &w, &h );
521 wxCoord xx = XLOG2DEV(x);
522 wxCoord yy = YLOG2DEV(y);
523 if (m_window)
524 {
525 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
526 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
527 }
528 }
529 }
530
531 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
532 wxCoord xc, wxCoord yc )
533 {
534 wxCHECK_RET( Ok(), wxT("invalid window dc") );
535
536 wxCoord xx1 = XLOG2DEV(x1);
537 wxCoord yy1 = YLOG2DEV(y1);
538 wxCoord xx2 = XLOG2DEV(x2);
539 wxCoord yy2 = YLOG2DEV(y2);
540 wxCoord xxc = XLOG2DEV(xc);
541 wxCoord yyc = YLOG2DEV(yc);
542 double dx = xx1 - xxc;
543 double dy = yy1 - yyc;
544 double radius = sqrt((double)(dx*dx+dy*dy));
545 wxCoord r = (wxCoord)radius;
546 double radius1, radius2;
547
548 if (xx1 == xx2 && yy1 == yy2)
549 {
550 radius1 = 0.0;
551 radius2 = 360.0;
552 }
553 else if ( wxIsNullDouble(radius) )
554 {
555 radius1 =
556 radius2 = 0.0;
557 }
558 else
559 {
560 radius1 = (xx1 - xxc == 0) ?
561 (yy1 - yyc < 0) ? 90.0 : -90.0 :
562 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
563 radius2 = (xx2 - xxc == 0) ?
564 (yy2 - yyc < 0) ? 90.0 : -90.0 :
565 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
566 }
567 wxCoord alpha1 = wxCoord(radius1 * 64.0);
568 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
569 while (alpha2 <= 0) alpha2 += 360*64;
570 while (alpha1 > 360*64) alpha1 -= 360*64;
571
572 if (m_window)
573 {
574 if (m_brush.GetStyle() != wxTRANSPARENT)
575 {
576 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
577 {
578 gdk_gc_set_ts_origin( m_textGC,
579 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
580 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
581 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
582 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
583 } else
584 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
585 {
586 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
587 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
588 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
589 } else
590 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
591 {
592 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
593 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
594 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
595 } else
596 if (m_brush.GetStyle() == wxSTIPPLE)
597 {
598 gdk_gc_set_ts_origin( m_brushGC,
599 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
600 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
601 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
602 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
603 }
604 else
605 {
606 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
607 }
608 }
609
610 if (m_pen.GetStyle() != wxTRANSPARENT)
611 {
612 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
613
614 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
615 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
616 }
617 }
618
619 CalcBoundingBox (x1, y1);
620 CalcBoundingBox (x2, y2);
621 }
622
623 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
624 {
625 wxCHECK_RET( Ok(), wxT("invalid window dc") );
626
627 wxCoord xx = XLOG2DEV(x);
628 wxCoord yy = YLOG2DEV(y);
629 wxCoord ww = m_signX * XLOG2DEVREL(width);
630 wxCoord hh = m_signY * YLOG2DEVREL(height);
631
632 // CMB: handle -ve width and/or height
633 if (ww < 0) { ww = -ww; xx = xx - ww; }
634 if (hh < 0) { hh = -hh; yy = yy - hh; }
635
636 if (m_window)
637 {
638 wxCoord start = wxCoord(sa * 64.0);
639 wxCoord end = wxCoord((ea-sa) * 64.0);
640
641 if (m_brush.GetStyle() != wxTRANSPARENT)
642 {
643 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
644 {
645 gdk_gc_set_ts_origin( m_textGC,
646 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
647 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
648 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
649 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
650 } else
651 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
652 {
653 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
654 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
655 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
656 } else
657 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
658 {
659 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
660 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
661 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
662 } else
663 if (m_brush.GetStyle() == wxSTIPPLE)
664 {
665 gdk_gc_set_ts_origin( m_brushGC,
666 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
667 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
668 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
669 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
670 }
671 else
672 {
673 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
674 }
675 }
676
677 if (m_pen.GetStyle() != wxTRANSPARENT)
678 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
679 }
680
681 CalcBoundingBox (x, y);
682 CalcBoundingBox (x + width, y + height);
683 }
684
685 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
686 {
687 wxCHECK_RET( Ok(), wxT("invalid window dc") );
688
689 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
690 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
691
692 CalcBoundingBox (x, y);
693 }
694
695 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
696 {
697 wxCHECK_RET( Ok(), wxT("invalid window dc") );
698
699 if (m_pen.GetStyle() == wxTRANSPARENT) return;
700 if (n <= 0) return;
701
702 //Check, if scaling is necessary
703 const bool doScale =
704 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
705
706 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
707 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
708
709 if (doScale)
710 gpts = new GdkPoint[n];
711
712 for (int i = 0; i < n; i++)
713 {
714 if (doScale)
715 {
716 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
717 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
718 }
719 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
720 }
721
722 if (m_window)
723 gdk_draw_lines( m_window, m_penGC, gpts, n);
724
725 if (doScale)
726 delete[] gpts;
727 }
728
729 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
730 {
731 wxCHECK_RET( Ok(), wxT("invalid window dc") );
732
733 if (n <= 0) return;
734
735 //Check, if scaling is necessary
736 const bool doScale =
737 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
738
739 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
740 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
741
742 if (doScale)
743 gdkpoints = new GdkPoint[n];
744
745 int i;
746 for (i = 0 ; i < n ; i++)
747 {
748 if (doScale)
749 {
750 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
751 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
752 }
753 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
754 }
755
756 if (m_window)
757 {
758 if (m_brush.GetStyle() != wxTRANSPARENT)
759 {
760 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
761 {
762 gdk_gc_set_ts_origin( m_textGC,
763 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
764 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
765 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
766 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
767 } else
768 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
769 {
770 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
771 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
772 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
773 } else
774 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
775 {
776 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
777 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
778 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
779 } else
780 if (m_brush.GetStyle() == wxSTIPPLE)
781 {
782 gdk_gc_set_ts_origin( m_brushGC,
783 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
784 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
785 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
786 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
787 }
788 else
789 {
790 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
791 }
792 }
793
794 if (m_pen.GetStyle() != wxTRANSPARENT)
795 {
796 /*
797 for (i = 0 ; i < n ; i++)
798 {
799 gdk_draw_line( m_window, m_penGC,
800 gdkpoints[i%n].x,
801 gdkpoints[i%n].y,
802 gdkpoints[(i+1)%n].x,
803 gdkpoints[(i+1)%n].y);
804 }
805 */
806 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
807
808 }
809 }
810
811 if (doScale)
812 delete[] gdkpoints;
813 }
814
815 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
816 {
817 wxCHECK_RET( Ok(), wxT("invalid window dc") );
818
819 wxCoord xx = XLOG2DEV(x);
820 wxCoord yy = YLOG2DEV(y);
821 wxCoord ww = m_signX * XLOG2DEVREL(width);
822 wxCoord hh = m_signY * YLOG2DEVREL(height);
823
824 // CMB: draw nothing if transformed w or h is 0
825 if (ww == 0 || hh == 0) return;
826
827 // CMB: handle -ve width and/or height
828 if (ww < 0) { ww = -ww; xx = xx - ww; }
829 if (hh < 0) { hh = -hh; yy = yy - hh; }
830
831 if (m_window)
832 {
833 if (m_brush.GetStyle() != wxTRANSPARENT)
834 {
835 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
836 {
837 gdk_gc_set_ts_origin( m_textGC,
838 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
839 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
840 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
841 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
842 } else
843 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
844 {
845 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
846 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
847 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
848 } else
849 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
850 {
851 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
852 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
853 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
854 } else
855 if (m_brush.GetStyle() == wxSTIPPLE)
856 {
857 gdk_gc_set_ts_origin( m_brushGC,
858 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
859 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
860 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
861 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
862 }
863 else
864 {
865 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
866 }
867 }
868
869 if (m_pen.GetStyle() != wxTRANSPARENT)
870 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
871 }
872
873 CalcBoundingBox( x, y );
874 CalcBoundingBox( x + width, y + height );
875 }
876
877 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
878 {
879 wxCHECK_RET( Ok(), wxT("invalid window dc") );
880
881 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
882
883 wxCoord xx = XLOG2DEV(x);
884 wxCoord yy = YLOG2DEV(y);
885 wxCoord ww = m_signX * XLOG2DEVREL(width);
886 wxCoord hh = m_signY * YLOG2DEVREL(height);
887 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
888
889 // CMB: handle -ve width and/or height
890 if (ww < 0) { ww = -ww; xx = xx - ww; }
891 if (hh < 0) { hh = -hh; yy = yy - hh; }
892
893 // CMB: if radius is zero use DrawRectangle() instead to avoid
894 // X drawing errors with small radii
895 if (rr == 0)
896 {
897 DrawRectangle( x, y, width, height );
898 return;
899 }
900
901 // CMB: draw nothing if transformed w or h is 0
902 if (ww == 0 || hh == 0) return;
903
904 // CMB: adjust size if outline is drawn otherwise the result is
905 // 1 pixel too wide and high
906 if (m_pen.GetStyle() != wxTRANSPARENT)
907 {
908 ww--;
909 hh--;
910 }
911
912 if (m_window)
913 {
914 // CMB: ensure dd is not larger than rectangle otherwise we
915 // get an hour glass shape
916 wxCoord dd = 2 * rr;
917 if (dd > ww) dd = ww;
918 if (dd > hh) dd = hh;
919 rr = dd / 2;
920
921 if (m_brush.GetStyle() != wxTRANSPARENT)
922 {
923 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
924 {
925 gdk_gc_set_ts_origin( m_textGC,
926 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
927 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
928 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
929 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
930 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
931 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
932 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
934 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
935 } else
936 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
937 {
938 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
939 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
940 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
941 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
942 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
945 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
946 } else
947 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
948 {
949 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
950 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
951 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
952 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
953 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
954 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
956 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
957 } else
958 if (m_brush.GetStyle() == wxSTIPPLE)
959 {
960 gdk_gc_set_ts_origin( m_brushGC,
961 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
962 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
963 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
964 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
965 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
966 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
967 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
969 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
970 }
971 else
972 {
973 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
974 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
975 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
976 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
977 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
979 }
980 }
981
982 if (m_pen.GetStyle() != wxTRANSPARENT)
983 {
984 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
985 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
986 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
987 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
988 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
989 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
990 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
992 }
993 }
994
995 // this ignores the radius
996 CalcBoundingBox( x, y );
997 CalcBoundingBox( x + width, y + height );
998 }
999
1000 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1001 {
1002 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1003
1004 wxCoord xx = XLOG2DEV(x);
1005 wxCoord yy = YLOG2DEV(y);
1006 wxCoord ww = m_signX * XLOG2DEVREL(width);
1007 wxCoord hh = m_signY * YLOG2DEVREL(height);
1008
1009 // CMB: handle -ve width and/or height
1010 if (ww < 0) { ww = -ww; xx = xx - ww; }
1011 if (hh < 0) { hh = -hh; yy = yy - hh; }
1012
1013 if (m_window)
1014 {
1015 if (m_brush.GetStyle() != wxTRANSPARENT)
1016 {
1017 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1018 {
1019 gdk_gc_set_ts_origin( m_textGC,
1020 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1021 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1022 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1023 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1024 } else
1025 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1026 {
1027 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1028 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1029 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1030 } else
1031 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1032 {
1033 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1034 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1035 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1036 } else
1037 if (m_brush.GetStyle() == wxSTIPPLE)
1038 {
1039 gdk_gc_set_ts_origin( m_brushGC,
1040 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1041 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1042 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1043 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1044 }
1045 else
1046 {
1047 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1048 }
1049 }
1050
1051 if (m_pen.GetStyle() != wxTRANSPARENT)
1052 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1053 }
1054
1055 CalcBoundingBox( x, y );
1056 CalcBoundingBox( x + width, y + height );
1057 }
1058
1059 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1060 {
1061 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1062 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1063 }
1064
1065 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1066 wxCoord x, wxCoord y,
1067 bool useMask )
1068 {
1069 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1070
1071 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1072
1073 bool is_mono = bitmap.GetDepth() == 1;
1074
1075 // scale/translate size and position
1076 int xx = XLOG2DEV(x);
1077 int yy = YLOG2DEV(y);
1078
1079 int w = bitmap.GetWidth();
1080 int h = bitmap.GetHeight();
1081
1082 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1083 xx -= w;
1084
1085 CalcBoundingBox( x, y );
1086 CalcBoundingBox( x + w, y + h );
1087
1088 if (!m_window) return;
1089
1090 int ww = XLOG2DEVREL(w);
1091 int hh = YLOG2DEVREL(h);
1092
1093 // compare to current clipping region
1094 if (!m_currentClippingRegion.IsNull())
1095 {
1096 wxRegion tmp( xx,yy,ww,hh );
1097 tmp.Intersect( m_currentClippingRegion );
1098 if (tmp.IsEmpty())
1099 return;
1100 }
1101
1102 // scale bitmap if required
1103 wxBitmap use_bitmap = bitmap;
1104 if ((w != ww) || (h != hh))
1105 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1106
1107 #if !GTK_CHECK_VERSION(2,2,0)
1108 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1109 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1110 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1111 // and also creates the mask as a side-effect:
1112 use_bitmap.GetPixmap();
1113 #endif
1114
1115 // apply mask if any
1116 GdkBitmap *mask = (GdkBitmap *) NULL;
1117 if (useMask && use_bitmap.GetMask())
1118 mask = use_bitmap.GetMask()->GetBitmap();
1119
1120 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1121
1122 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1123
1124 if (mask != NULL)
1125 {
1126 if (!m_currentClippingRegion.IsNull())
1127 {
1128 GdkColor col;
1129 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1130 GdkGC *gc = gdk_gc_new( new_mask );
1131 col.pixel = 0;
1132 gdk_gc_set_foreground( gc, &col );
1133 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1134 col.pixel = 0;
1135 gdk_gc_set_background( gc, &col );
1136 col.pixel = 1;
1137 gdk_gc_set_foreground( gc, &col );
1138 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1139 gdk_gc_set_clip_origin( gc, -xx, -yy );
1140 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1141 gdk_gc_set_stipple( gc, mask );
1142 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1143 mask = new_mask;
1144 g_object_unref (gc);
1145 }
1146
1147 gdk_gc_set_clip_mask(use_gc, mask);
1148 gdk_gc_set_clip_origin(use_gc, xx, yy);
1149 }
1150
1151 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1152 // drawing a mono-bitmap (XBitmap) we use the current text GC
1153 if (is_mono)
1154 {
1155 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1156 GdkGC *gc = gdk_gc_new( bitmap2 );
1157 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1158 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1159 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1160
1161 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1162
1163 g_object_unref (bitmap2);
1164 g_object_unref (gc);
1165 }
1166 else
1167 {
1168 #if GTK_CHECK_VERSION(2,2,0)
1169 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1170 {
1171 gdk_draw_pixbuf(m_window, use_gc,
1172 use_bitmap.GetPixbuf(),
1173 0, 0, xx, yy, -1, -1,
1174 GDK_RGB_DITHER_NORMAL, xx, yy);
1175 }
1176 else
1177 #endif
1178 {
1179 gdk_draw_drawable(m_window, use_gc,
1180 use_bitmap.GetPixmap(),
1181 0, 0, xx, yy, -1, -1);
1182 }
1183 }
1184
1185 // remove mask again if any
1186 if (mask != NULL)
1187 {
1188 gdk_gc_set_clip_mask(use_gc, NULL);
1189 gdk_gc_set_clip_origin(use_gc, 0, 0);
1190 if (!m_currentClippingRegion.IsNull())
1191 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1192 if (new_mask != NULL)
1193 g_object_unref(new_mask);
1194 }
1195 }
1196
1197 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1198 wxCoord width, wxCoord height,
1199 wxDC *source,
1200 wxCoord xsrc, wxCoord ysrc,
1201 int logical_func,
1202 bool useMask,
1203 wxCoord xsrcMask, wxCoord ysrcMask )
1204 {
1205 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1206
1207 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1208
1209 if (!m_window) return false;
1210
1211 // transform the source DC coords to the device ones
1212 xsrc = source->LogicalToDeviceX(xsrc);
1213 ysrc = source->LogicalToDeviceY(ysrc);
1214
1215 wxClientDC *srcDC = (wxClientDC*)source;
1216 wxMemoryDC *memDC = (wxMemoryDC*)source;
1217
1218 bool use_bitmap_method = false;
1219 bool is_mono = false;
1220
1221 if (xsrcMask == -1 && ysrcMask == -1)
1222 {
1223 xsrcMask = xsrc;
1224 ysrcMask = ysrc;
1225 }
1226
1227 if (srcDC->m_isMemDC)
1228 {
1229 if (!memDC->m_selected.Ok()) return false;
1230
1231 is_mono = (memDC->m_selected.GetDepth() == 1);
1232
1233 // we use the "XCopyArea" way to copy a memory dc into
1234 // a different window if the memory dc BOTH
1235 // a) doesn't have any mask or its mask isn't used
1236 // b) it is clipped
1237 // c) is not 1-bit
1238
1239 if (useMask && (memDC->m_selected.GetMask()))
1240 {
1241 // we HAVE TO use the direct way for memory dcs
1242 // that have mask since the XCopyArea doesn't know
1243 // about masks
1244 use_bitmap_method = true;
1245 }
1246 else if (is_mono)
1247 {
1248 // we HAVE TO use the direct way for memory dcs
1249 // that are bitmaps because XCopyArea doesn't cope
1250 // with different bit depths
1251 use_bitmap_method = true;
1252 }
1253 else if ((xsrc == 0) && (ysrc == 0) &&
1254 (width == memDC->m_selected.GetWidth()) &&
1255 (height == memDC->m_selected.GetHeight()))
1256 {
1257 // we SHOULD use the direct way if all of the bitmap
1258 // in the memory dc is copied in which case XCopyArea
1259 // wouldn't be able able to boost performace by reducing
1260 // the area to be scaled
1261 use_bitmap_method = true;
1262 }
1263 }
1264
1265 CalcBoundingBox( xdest, ydest );
1266 CalcBoundingBox( xdest + width, ydest + height );
1267
1268 // scale/translate size and position
1269 wxCoord xx = XLOG2DEV(xdest);
1270 wxCoord yy = YLOG2DEV(ydest);
1271
1272 wxCoord ww = XLOG2DEVREL(width);
1273 wxCoord hh = YLOG2DEVREL(height);
1274
1275 // compare to current clipping region
1276 if (!m_currentClippingRegion.IsNull())
1277 {
1278 wxRegion tmp( xx,yy,ww,hh );
1279 tmp.Intersect( m_currentClippingRegion );
1280 if (tmp.IsEmpty())
1281 return true;
1282 }
1283
1284 int old_logical_func = m_logicalFunction;
1285 SetLogicalFunction( logical_func );
1286
1287 if (use_bitmap_method)
1288 {
1289 // scale/translate bitmap size
1290 wxCoord bm_width = memDC->m_selected.GetWidth();
1291 wxCoord bm_height = memDC->m_selected.GetHeight();
1292
1293 // Get clip coords for the bitmap. If we don't
1294 // use wxBitmap::Rescale(), which can clip the
1295 // bitmap, these are the same as the original
1296 // coordinates
1297 wxCoord cx = xx;
1298 wxCoord cy = yy;
1299 wxCoord cw = ww;
1300 wxCoord ch = hh;
1301
1302 // interpret userscale of src too
1303 double xsc,ysc;
1304 memDC->GetUserScale(&xsc,&ysc);
1305 bm_width = (int) (bm_width / xsc);
1306 bm_height = (int) (bm_height / ysc);
1307
1308 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1309 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1310
1311 // Scale bitmap if required
1312 wxBitmap use_bitmap = memDC->m_selected;
1313 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1314 {
1315 // This indicates that the blitting code below will get
1316 // a clipped bitmap and therefore needs to move the origin
1317 // accordingly
1318 wxRegion tmp( xx,yy,ww,hh );
1319 tmp.Intersect( m_currentClippingRegion );
1320 tmp.GetBox(cx,cy,cw,ch);
1321
1322 // Scale and clipped bitmap
1323 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1324 }
1325
1326 // apply mask if any
1327 GdkBitmap *mask = (GdkBitmap *) NULL;
1328 if (useMask && use_bitmap.GetMask())
1329 mask = use_bitmap.GetMask()->GetBitmap();
1330
1331 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1332
1333 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1334
1335 if (mask != NULL)
1336 {
1337 if (!m_currentClippingRegion.IsNull())
1338 {
1339 GdkColor col;
1340 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1341 GdkGC *gc = gdk_gc_new( new_mask );
1342 col.pixel = 0;
1343 gdk_gc_set_foreground( gc, &col );
1344 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1345 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1346 col.pixel = 0;
1347 gdk_gc_set_background( gc, &col );
1348 col.pixel = 1;
1349 gdk_gc_set_foreground( gc, &col );
1350 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1351 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1352 gdk_gc_set_clip_origin( gc, -cx, -cy );
1353 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1354 gdk_gc_set_stipple( gc, mask );
1355 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1356 mask = new_mask;
1357 g_object_unref (gc);
1358 }
1359
1360 gdk_gc_set_clip_mask(use_gc, mask);
1361 if (new_mask != NULL)
1362 gdk_gc_set_clip_origin(use_gc, cx, cy);
1363 else
1364 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1365 }
1366
1367 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1368 // drawing a mono-bitmap (XBitmap) we use the current text GC
1369
1370 if (is_mono)
1371 {
1372 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1373 GdkGC *gc = gdk_gc_new( bitmap );
1374 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1375 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1376 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1377
1378 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1379
1380 g_object_unref (bitmap);
1381 g_object_unref (gc);
1382 }
1383 else
1384 {
1385 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1386 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1387 }
1388
1389 // remove mask again if any
1390 if (mask != NULL)
1391 {
1392 gdk_gc_set_clip_mask(use_gc, NULL);
1393 gdk_gc_set_clip_origin(use_gc, 0, 0);
1394 if (!m_currentClippingRegion.IsNull())
1395 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1396 }
1397
1398 if (new_mask)
1399 g_object_unref (new_mask);
1400 }
1401 else // use_bitmap_method
1402 {
1403 if ((width != ww) || (height != hh))
1404 {
1405 // get clip coords
1406 wxRegion tmp( xx,yy,ww,hh );
1407 tmp.Intersect( m_currentClippingRegion );
1408 wxCoord cx,cy,cw,ch;
1409 tmp.GetBox(cx,cy,cw,ch);
1410
1411 // rescale bitmap
1412 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1413
1414 // draw scaled bitmap
1415 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1416 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1417 }
1418 else
1419 {
1420 // No scaling and not a memory dc with a mask either
1421
1422 // copy including child window contents
1423 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1424 gdk_draw_drawable( m_window, m_penGC,
1425 srcDC->GetWindow(),
1426 xsrc, ysrc, xx, yy,
1427 width, height );
1428 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1429 }
1430 }
1431
1432 SetLogicalFunction( old_logical_func );
1433
1434 return true;
1435 }
1436
1437 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1438 {
1439 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1440
1441 if (!m_window) return;
1442
1443 if (text.empty()) return;
1444
1445 x = XLOG2DEV(x);
1446 y = YLOG2DEV(y);
1447
1448 wxCHECK_RET( m_context, wxT("no Pango context") );
1449 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1450 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1451
1452 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1453
1454 const wxCharBuffer data = wxGTK_CONV( text );
1455 if ( !data )
1456 return;
1457 const size_t datalen = strlen(data);
1458 pango_layout_set_text( m_layout, data, datalen);
1459
1460 if (underlined)
1461 {
1462 PangoAttrList *attrs = pango_attr_list_new();
1463 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1464 a->start_index = 0;
1465 a->end_index = datalen;
1466 pango_attr_list_insert(attrs, a);
1467 pango_layout_set_attributes(m_layout, attrs);
1468 pango_attr_list_unref(attrs);
1469 }
1470
1471 int w,h;
1472
1473 if (fabs(m_scaleY - 1.0) > 0.00001)
1474 {
1475 // If there is a user or actually any scale applied to
1476 // the device context, scale the font.
1477
1478 // scale font description
1479 gint oldSize = pango_font_description_get_size( m_fontdesc );
1480 double size = oldSize;
1481 size = size * m_scaleY;
1482 pango_font_description_set_size( m_fontdesc, (gint)size );
1483
1484 // actually apply scaled font
1485 pango_layout_set_font_description( m_layout, m_fontdesc );
1486
1487 pango_layout_get_pixel_size( m_layout, &w, &h );
1488 if ( m_backgroundMode == wxSOLID )
1489 {
1490 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1491 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1492 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1493 }
1494
1495 // Draw layout.
1496 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1497 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1498 else
1499 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1500
1501 // reset unscaled size
1502 pango_font_description_set_size( m_fontdesc, oldSize );
1503
1504 // actually apply unscaled font
1505 pango_layout_set_font_description( m_layout, m_fontdesc );
1506 }
1507 else
1508 {
1509 pango_layout_get_pixel_size( m_layout, &w, &h );
1510 if ( m_backgroundMode == wxSOLID )
1511 {
1512 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1513 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1514 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1515 }
1516
1517 // Draw layout.
1518 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1519 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1520 else
1521 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1522 }
1523
1524 if (underlined)
1525 {
1526 // undo underline attributes setting:
1527 pango_layout_set_attributes(m_layout, NULL);
1528 }
1529
1530 wxCoord width = w;
1531 wxCoord height = h;
1532
1533 width = wxCoord(width / m_scaleX);
1534 height = wxCoord(height / m_scaleY);
1535 CalcBoundingBox (x + width, y + height);
1536 CalcBoundingBox (x, y);
1537 }
1538
1539
1540 // TODO: There is an example of rotating text with GTK2 that would probably be
1541 // a better approach here:
1542 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1543
1544 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1545 {
1546 if (!m_window || text.empty())
1547 return;
1548
1549 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1550
1551 if ( wxIsNullDouble(angle) )
1552 {
1553 DrawText(text, x, y);
1554 return;
1555 }
1556
1557 wxCoord w;
1558 wxCoord h;
1559
1560 // TODO: implement later without GdkFont for GTK 2.0
1561 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1562
1563 // draw the string normally
1564 wxBitmap src(w, h);
1565 wxMemoryDC dc;
1566 dc.SelectObject(src);
1567 dc.SetFont(GetFont());
1568 dc.SetBackground(*wxBLACK_BRUSH);
1569 dc.SetBrush(*wxBLACK_BRUSH);
1570 dc.Clear();
1571 dc.SetTextForeground( *wxWHITE );
1572 dc.DrawText(text, 0, 0);
1573 dc.SelectObject(wxNullBitmap);
1574
1575 // Calculate the size of the rotated bounding box.
1576 double rad = DegToRad(angle);
1577 double dx = cos(rad),
1578 dy = sin(rad);
1579
1580 // the rectngle vertices are counted clockwise with the first one being at
1581 // (0, 0) (or, rather, at (x, y))
1582 double x2 = w*dx,
1583 y2 = -w*dy; // y axis points to the bottom, hence minus
1584 double x4 = h*dy,
1585 y4 = h*dx;
1586 double x3 = x4 + x2,
1587 y3 = y4 + y2;
1588
1589 // calc max and min
1590 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1591 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1592 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1593 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1594
1595
1596 wxImage image = src.ConvertToImage();
1597
1598 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1599 m_textForegroundColour.Green(),
1600 m_textForegroundColour.Blue() );
1601 image = image.Rotate( rad, wxPoint(0,0) );
1602
1603 int i_angle = (int) angle;
1604 i_angle = i_angle % 360;
1605 if (i_angle < 0)
1606 i_angle += 360;
1607 int xoffset = 0;
1608 if ((i_angle >= 90.0) && (i_angle < 270.0))
1609 xoffset = image.GetWidth();
1610 int yoffset = 0;
1611 if ((i_angle >= 0.0) && (i_angle < 180.0))
1612 yoffset = image.GetHeight();
1613
1614 if ((i_angle >= 0) && (i_angle < 90))
1615 yoffset -= (int)( cos(rad)*h );
1616 if ((i_angle >= 90) && (i_angle < 180))
1617 xoffset -= (int)( sin(rad)*h );
1618 if ((i_angle >= 180) && (i_angle < 270))
1619 yoffset -= (int)( cos(rad)*h );
1620 if ((i_angle >= 270) && (i_angle < 360))
1621 xoffset -= (int)( sin(rad)*h );
1622
1623 int i_x = x - xoffset;
1624 int i_y = y - yoffset;
1625
1626 src = image;
1627 DoDrawBitmap( src, i_x, i_y, true );
1628
1629
1630 // it would be better to draw with non underlined font and draw the line
1631 // manually here (it would be more straight...)
1632 #if 0
1633 if ( m_font.GetUnderlined() )
1634 {
1635 gdk_draw_line( m_window, m_textGC,
1636 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1637 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1638 }
1639 #endif // 0
1640
1641 // update the bounding box
1642 CalcBoundingBox(x + minX, y + minY);
1643 CalcBoundingBox(x + maxX, y + maxY);
1644 }
1645
1646 void wxWindowDC::DoGetTextExtent(const wxString &string,
1647 wxCoord *width, wxCoord *height,
1648 wxCoord *descent, wxCoord *externalLeading,
1649 wxFont *theFont) const
1650 {
1651 if ( width )
1652 *width = 0;
1653 if ( height )
1654 *height = 0;
1655 if ( descent )
1656 *descent = 0;
1657 if ( externalLeading )
1658 *externalLeading = 0;
1659
1660 if (string.empty())
1661 return;
1662
1663 // ensure that theFont is always non-NULL
1664 if ( !theFont || !theFont->Ok() )
1665 theFont = wx_const_cast(wxFont *, &m_font);
1666
1667 // and use it if it's valid
1668 if ( theFont->Ok() )
1669 {
1670 pango_layout_set_font_description
1671 (
1672 m_layout,
1673 theFont->GetNativeFontInfo()->description
1674 );
1675 }
1676
1677 // Set layout's text
1678 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1679 if ( !dataUTF8 )
1680 {
1681 // hardly ideal, but what else can we do if conversion failed?
1682 return;
1683 }
1684
1685 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1686
1687 if (descent)
1688 {
1689 int h;
1690 pango_layout_get_pixel_size( m_layout, width, &h );
1691 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1692 int baseline = pango_layout_iter_get_baseline(iter);
1693 pango_layout_iter_free(iter);
1694 *descent = h - PANGO_PIXELS(baseline);
1695
1696 if (height)
1697 *height = (wxCoord) h;
1698 }
1699 else
1700 {
1701 pango_layout_get_pixel_size( m_layout, width, height );
1702 }
1703
1704 // Reset old font description
1705 if (theFont)
1706 pango_layout_set_font_description( m_layout, m_fontdesc );
1707 }
1708
1709 wxCoord wxWindowDC::GetCharWidth() const
1710 {
1711 pango_layout_set_text( m_layout, "H", 1 );
1712 int w;
1713 pango_layout_get_pixel_size( m_layout, &w, NULL );
1714 return w;
1715 }
1716
1717 wxCoord wxWindowDC::GetCharHeight() const
1718 {
1719 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1720 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1721 }
1722
1723 void wxWindowDC::Clear()
1724 {
1725 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1726
1727 if (!m_window) return;
1728
1729 // VZ: the code below results in infinite recursion and crashes when
1730 // dc.Clear() is done from OnPaint() so I disable it for now.
1731 // I don't know what the correct fix is but Clear() surely should not
1732 // reenter OnPaint()!
1733 #if 0
1734 /* - we either are a memory dc or have a window as the
1735 owner. anything else shouldn't happen.
1736 - we don't use gdk_window_clear() as we don't set
1737 the window's background colour anymore. it is too
1738 much pain to keep the DC's and the window's back-
1739 ground colour in synch. */
1740
1741 if (m_owner)
1742 {
1743 m_owner->Clear();
1744 return;
1745 }
1746
1747 if (m_isMemDC)
1748 {
1749 int width,height;
1750 GetSize( &width, &height );
1751 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1752 return;
1753 }
1754 #else // 1
1755 int width,height;
1756 GetSize( &width, &height );
1757 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1758 #endif // 0/1
1759 }
1760
1761 void wxWindowDC::SetFont( const wxFont &font )
1762 {
1763 m_font = font;
1764
1765 if (m_font.Ok())
1766 {
1767 if (m_fontdesc)
1768 pango_font_description_free( m_fontdesc );
1769
1770 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1771
1772
1773 if (m_owner)
1774 {
1775 PangoContext *oldContext = m_context;
1776
1777 m_context = m_owner->GtkGetPangoDefaultContext();
1778
1779 // If we switch back/forth between different contexts
1780 // we also have to create a new layout. I think so,
1781 // at least, and it doesn't hurt to do it.
1782 if (oldContext != m_context)
1783 {
1784 if (m_layout)
1785 g_object_unref (m_layout);
1786
1787 m_layout = pango_layout_new( m_context );
1788 }
1789 }
1790
1791 pango_layout_set_font_description( m_layout, m_fontdesc );
1792 }
1793 }
1794
1795 void wxWindowDC::SetPen( const wxPen &pen )
1796 {
1797 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1798
1799 if (m_pen == pen) return;
1800
1801 m_pen = pen;
1802
1803 if (!m_pen.Ok()) return;
1804
1805 if (!m_window) return;
1806
1807 gint width = m_pen.GetWidth();
1808 if (width <= 0)
1809 {
1810 // CMB: if width is non-zero scale it with the dc
1811 width = 1;
1812 }
1813 else
1814 {
1815 // X doesn't allow different width in x and y and so we take
1816 // the average
1817 double w = 0.5 +
1818 ( fabs((double) XLOG2DEVREL(width)) +
1819 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1820 width = (int)w;
1821 if ( !width )
1822 {
1823 // width can't be 0 or an internal GTK error occurs inside
1824 // gdk_gc_set_dashes() below
1825 width = 1;
1826 }
1827 }
1828
1829 static const wxGTKDash dotted[] = {1, 1};
1830 static const wxGTKDash short_dashed[] = {2, 2};
1831 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1832 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1833
1834 // We express dash pattern in pen width unit, so we are
1835 // independent of zoom factor and so on...
1836 int req_nb_dash;
1837 const wxGTKDash *req_dash;
1838
1839 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1840 switch (m_pen.GetStyle())
1841 {
1842 case wxUSER_DASH:
1843 {
1844 lineStyle = GDK_LINE_ON_OFF_DASH;
1845 req_nb_dash = m_pen.GetDashCount();
1846 req_dash = (wxGTKDash*)m_pen.GetDash();
1847 break;
1848 }
1849 case wxDOT:
1850 {
1851 lineStyle = GDK_LINE_ON_OFF_DASH;
1852 req_nb_dash = 2;
1853 req_dash = dotted;
1854 break;
1855 }
1856 case wxLONG_DASH:
1857 {
1858 lineStyle = GDK_LINE_ON_OFF_DASH;
1859 req_nb_dash = 2;
1860 req_dash = wxCoord_dashed;
1861 break;
1862 }
1863 case wxSHORT_DASH:
1864 {
1865 lineStyle = GDK_LINE_ON_OFF_DASH;
1866 req_nb_dash = 2;
1867 req_dash = short_dashed;
1868 break;
1869 }
1870 case wxDOT_DASH:
1871 {
1872 // lineStyle = GDK_LINE_DOUBLE_DASH;
1873 lineStyle = GDK_LINE_ON_OFF_DASH;
1874 req_nb_dash = 4;
1875 req_dash = dotted_dashed;
1876 break;
1877 }
1878
1879 case wxTRANSPARENT:
1880 case wxSTIPPLE_MASK_OPAQUE:
1881 case wxSTIPPLE:
1882 case wxSOLID:
1883 default:
1884 {
1885 lineStyle = GDK_LINE_SOLID;
1886 req_dash = (wxGTKDash*)NULL;
1887 req_nb_dash = 0;
1888 break;
1889 }
1890 }
1891
1892 if (req_dash && req_nb_dash)
1893 {
1894 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1895 if (real_req_dash)
1896 {
1897 for (int i = 0; i < req_nb_dash; i++)
1898 real_req_dash[i] = req_dash[i] * width;
1899 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1900 delete[] real_req_dash;
1901 }
1902 else
1903 {
1904 // No Memory. We use non-scaled dash pattern...
1905 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1906 }
1907 }
1908
1909 GdkCapStyle capStyle = GDK_CAP_ROUND;
1910 switch (m_pen.GetCap())
1911 {
1912 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1913 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1914 case wxCAP_ROUND:
1915 default:
1916 {
1917 if (width <= 1)
1918 {
1919 width = 0;
1920 capStyle = GDK_CAP_NOT_LAST;
1921 }
1922 else
1923 {
1924 capStyle = GDK_CAP_ROUND;
1925 }
1926 break;
1927 }
1928 }
1929
1930 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1931 switch (m_pen.GetJoin())
1932 {
1933 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1934 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1935 case wxJOIN_ROUND:
1936 default: { joinStyle = GDK_JOIN_ROUND; break; }
1937 }
1938
1939 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1940
1941 m_pen.GetColour().CalcPixel( m_cmap );
1942 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1943 }
1944
1945 void wxWindowDC::SetBrush( const wxBrush &brush )
1946 {
1947 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1948
1949 if (m_brush == brush) return;
1950
1951 m_brush = brush;
1952
1953 if (!m_brush.Ok()) return;
1954
1955 if (!m_window) return;
1956
1957 m_brush.GetColour().CalcPixel( m_cmap );
1958 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1959
1960 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
1961
1962 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
1963 {
1964 if (m_brush.GetStipple()->GetDepth() != 1)
1965 {
1966 gdk_gc_set_fill( m_brushGC, GDK_TILED );
1967 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1968 }
1969 else
1970 {
1971 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1972 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1973 }
1974 }
1975
1976 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1977 {
1978 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
1979 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
1980 }
1981
1982 if (m_brush.IsHatch())
1983 {
1984 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1985 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
1986 gdk_gc_set_stipple( m_brushGC, hatches[num] );
1987 }
1988 }
1989
1990 void wxWindowDC::SetBackground( const wxBrush &brush )
1991 {
1992 /* CMB 21/7/98: Added SetBackground. Sets background brush
1993 * for Clear() and bg colour for shapes filled with cross-hatch brush */
1994
1995 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1996
1997 if (m_backgroundBrush == brush) return;
1998
1999 m_backgroundBrush = brush;
2000
2001 if (!m_backgroundBrush.Ok()) return;
2002
2003 if (!m_window) return;
2004
2005 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2006 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2007 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2008 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2009 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2010
2011 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2012
2013 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2014 {
2015 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2016 {
2017 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2018 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2019 }
2020 else
2021 {
2022 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2023 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2024 }
2025 }
2026
2027 if (m_backgroundBrush.IsHatch())
2028 {
2029 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2030 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2031 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2032 }
2033 }
2034
2035 void wxWindowDC::SetLogicalFunction( int function )
2036 {
2037 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2038
2039 if (m_logicalFunction == function)
2040 return;
2041
2042 // VZ: shouldn't this be a CHECK?
2043 if (!m_window)
2044 return;
2045
2046 GdkFunction mode;
2047 switch (function)
2048 {
2049 case wxXOR: mode = GDK_XOR; break;
2050 case wxINVERT: mode = GDK_INVERT; break;
2051 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2052 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2053 case wxCLEAR: mode = GDK_CLEAR; break;
2054 case wxSET: mode = GDK_SET; break;
2055 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2056 case wxAND: mode = GDK_AND; break;
2057 case wxOR: mode = GDK_OR; break;
2058 case wxEQUIV: mode = GDK_EQUIV; break;
2059 case wxNAND: mode = GDK_NAND; break;
2060 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2061 case wxCOPY: mode = GDK_COPY; break;
2062 case wxNO_OP: mode = GDK_NOOP; break;
2063 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2064
2065 // unsupported by GTK
2066 case wxNOR: mode = GDK_COPY; break;
2067 default:
2068 wxFAIL_MSG( wxT("unsupported logical function") );
2069 mode = GDK_COPY;
2070 }
2071
2072 m_logicalFunction = function;
2073
2074 gdk_gc_set_function( m_penGC, mode );
2075 gdk_gc_set_function( m_brushGC, mode );
2076
2077 // to stay compatible with wxMSW, we don't apply ROPs to the text
2078 // operations (i.e. DrawText/DrawRotatedText).
2079 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2080 gdk_gc_set_function( m_textGC, mode );
2081 }
2082
2083 void wxWindowDC::SetTextForeground( const wxColour &col )
2084 {
2085 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2086
2087 // don't set m_textForegroundColour to an invalid colour as we'd crash
2088 // later then (we use m_textForegroundColour.GetColor() without checking
2089 // in a few places)
2090 if ( !col.Ok() || (m_textForegroundColour == col) )
2091 return;
2092
2093 m_textForegroundColour = col;
2094
2095 if ( m_window )
2096 {
2097 m_textForegroundColour.CalcPixel( m_cmap );
2098 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2099 }
2100 }
2101
2102 void wxWindowDC::SetTextBackground( const wxColour &col )
2103 {
2104 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2105
2106 // same as above
2107 if ( !col.Ok() || (m_textBackgroundColour == col) )
2108 return;
2109
2110 m_textBackgroundColour = col;
2111
2112 if ( m_window )
2113 {
2114 m_textBackgroundColour.CalcPixel( m_cmap );
2115 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2116 }
2117 }
2118
2119 void wxWindowDC::SetBackgroundMode( int mode )
2120 {
2121 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2122
2123 m_backgroundMode = mode;
2124
2125 if (!m_window) return;
2126
2127 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2128 // transparent/solid background mode
2129
2130 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2131 {
2132 gdk_gc_set_fill( m_brushGC,
2133 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2134 }
2135 }
2136
2137 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2138 {
2139 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2140 }
2141
2142 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2143 {
2144 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2145
2146 if (!m_window) return;
2147
2148 wxRect rect;
2149 rect.x = XLOG2DEV(x);
2150 rect.y = YLOG2DEV(y);
2151 rect.width = XLOG2DEVREL(width);
2152 rect.height = YLOG2DEVREL(height);
2153
2154 if (!m_currentClippingRegion.IsNull())
2155 m_currentClippingRegion.Intersect( rect );
2156 else
2157 m_currentClippingRegion.Union( rect );
2158
2159 #if USE_PAINT_REGION
2160 if (!m_paintClippingRegion.IsNull())
2161 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2162 #endif
2163
2164 wxCoord xx, yy, ww, hh;
2165 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2166 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2167
2168 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2169 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2170 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2171 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2172 }
2173
2174 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2175 {
2176 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2177
2178 if (region.Empty())
2179 {
2180 DestroyClippingRegion();
2181 return;
2182 }
2183
2184 if (!m_window) return;
2185
2186 if (!m_currentClippingRegion.IsNull())
2187 m_currentClippingRegion.Intersect( region );
2188 else
2189 m_currentClippingRegion.Union( region );
2190
2191 #if USE_PAINT_REGION
2192 if (!m_paintClippingRegion.IsNull())
2193 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2194 #endif
2195
2196 wxCoord xx, yy, ww, hh;
2197 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2198 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2199
2200 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2201 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2202 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2203 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2204 }
2205
2206 void wxWindowDC::DestroyClippingRegion()
2207 {
2208 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2209
2210 wxDC::DestroyClippingRegion();
2211
2212 m_currentClippingRegion.Clear();
2213
2214 #if USE_PAINT_REGION
2215 if (!m_paintClippingRegion.IsEmpty())
2216 m_currentClippingRegion.Union( m_paintClippingRegion );
2217 #endif
2218
2219 if (!m_window) return;
2220
2221 if (m_currentClippingRegion.IsEmpty())
2222 {
2223 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2224 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2225 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2226 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2227 }
2228 else
2229 {
2230 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2231 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2232 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2233 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2234 }
2235 }
2236
2237 void wxWindowDC::Destroy()
2238 {
2239 if (m_penGC) wxFreePoolGC( m_penGC );
2240 m_penGC = (GdkGC*) NULL;
2241 if (m_brushGC) wxFreePoolGC( m_brushGC );
2242 m_brushGC = (GdkGC*) NULL;
2243 if (m_textGC) wxFreePoolGC( m_textGC );
2244 m_textGC = (GdkGC*) NULL;
2245 if (m_bgGC) wxFreePoolGC( m_bgGC );
2246 m_bgGC = (GdkGC*) NULL;
2247 }
2248
2249 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2250 {
2251 m_deviceOriginX = x;
2252 m_deviceOriginY = y;
2253
2254 ComputeScaleAndOrigin();
2255 }
2256
2257 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2258 {
2259 m_signX = (xLeftRight ? 1 : -1);
2260 m_signY = (yBottomUp ? -1 : 1);
2261
2262 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2263 m_signX = -m_signX;
2264
2265 ComputeScaleAndOrigin();
2266 }
2267
2268 void wxWindowDC::ComputeScaleAndOrigin()
2269 {
2270 const wxRealPoint origScale(m_scaleX, m_scaleY);
2271
2272 wxDC::ComputeScaleAndOrigin();
2273
2274 // if scale has changed call SetPen to recalulate the line width
2275 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2276 {
2277 // this is a bit artificial, but we need to force wxDC to think the pen
2278 // has changed
2279 wxPen pen = m_pen;
2280 m_pen = wxNullPen;
2281 SetPen( pen );
2282 }
2283 }
2284
2285 // Resolution in pixels per logical inch
2286 wxSize wxWindowDC::GetPPI() const
2287 {
2288 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2289 }
2290
2291 int wxWindowDC::GetDepth() const
2292 {
2293 return gdk_drawable_get_depth(m_window);
2294 }
2295
2296
2297 //-----------------------------------------------------------------------------
2298 // wxPaintDC
2299 //-----------------------------------------------------------------------------
2300
2301 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2302
2303 // Limit the paint region to the window size. Sometimes
2304 // the paint region is too big, and this risks X11 errors
2305 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2306 {
2307 wxRect originalRect = region.GetBox();
2308 wxRect rect(originalRect);
2309 if (rect.width + rect.x > sz.x)
2310 rect.width = sz.x - rect.x;
2311 if (rect.height + rect.y > sz.y)
2312 rect.height = sz.y - rect.y;
2313 if (rect != originalRect)
2314 {
2315 region = wxRegion(rect);
2316 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2317 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2318 rect.x, rect.y, rect.width, rect.height);
2319 }
2320 }
2321
2322 wxPaintDC::wxPaintDC( wxWindow *win )
2323 : wxClientDC( win )
2324 {
2325 #if USE_PAINT_REGION
2326 if (!win->m_clipPaintRegion)
2327 return;
2328
2329 wxSize sz = win->GetSize();
2330 m_paintClippingRegion = win->GetUpdateRegion();
2331 wxLimitRegionToSize(m_paintClippingRegion, sz);
2332
2333 GdkRegion *region = m_paintClippingRegion.GetRegion();
2334 if ( region )
2335 {
2336 m_currentClippingRegion.Union( m_paintClippingRegion );
2337 wxLimitRegionToSize(m_currentClippingRegion, sz);
2338
2339 if (sz.x <= 0 || sz.y <= 0)
2340 return ;
2341
2342 gdk_gc_set_clip_region( m_penGC, region );
2343 gdk_gc_set_clip_region( m_brushGC, region );
2344 gdk_gc_set_clip_region( m_textGC, region );
2345 gdk_gc_set_clip_region( m_bgGC, region );
2346 }
2347 #endif // USE_PAINT_REGION
2348 }
2349
2350 //-----------------------------------------------------------------------------
2351 // wxClientDC
2352 //-----------------------------------------------------------------------------
2353
2354 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2355
2356 wxClientDC::wxClientDC( wxWindow *win )
2357 : wxWindowDC( win )
2358 {
2359 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2360
2361 #ifdef __WXUNIVERSAL__
2362 wxPoint ptOrigin = win->GetClientAreaOrigin();
2363 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2364 wxSize size = win->GetClientSize();
2365 SetClippingRegion(wxPoint(0, 0), size);
2366 #endif // __WXUNIVERSAL__
2367 }
2368
2369 void wxClientDC::DoGetSize(int *width, int *height) const
2370 {
2371 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2372
2373 m_owner->GetClientSize( width, height );
2374 }
2375
2376 // ----------------------------------------------------------------------------
2377 // wxDCModule
2378 // ----------------------------------------------------------------------------
2379
2380 class wxDCModule : public wxModule
2381 {
2382 public:
2383 bool OnInit();
2384 void OnExit();
2385
2386 private:
2387 DECLARE_DYNAMIC_CLASS(wxDCModule)
2388 };
2389
2390 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2391
2392 bool wxDCModule::OnInit()
2393 {
2394 wxInitGCPool();
2395 return true;
2396 }
2397
2398 void wxDCModule::OnExit()
2399 {
2400 wxCleanUpGCPool();
2401 }
wxWidgets (Impactor)