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Add class factories for filter streams. Also filters now follow the convention
[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XCopyPlane XCOPYPLANE
15 #endif
16
17 #include "wx/dcclient.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/window.h"
21 #include "wx/log.h"
22 #include "wx/dcmemory.h"
23 #include "wx/math.h" // for floating-point functions
24 #include "wx/image.h"
25 #include "wx/module.h"
26 #endif
27
28 #include "wx/fontutil.h"
29 #include "wx/scrolwin.h"
30
31 #include "wx/gtk/win_gtk.h"
32 #include "wx/gtk/private.h"
33
34 #include <gdk/gdkx.h>
35
36 //-----------------------------------------------------------------------------
37 // local defines
38 //-----------------------------------------------------------------------------
39
40 #define USE_PAINT_REGION 1
41
42 //-----------------------------------------------------------------------------
43 // local data
44 //-----------------------------------------------------------------------------
45
46 #include "bdiag.xbm"
47 #include "fdiag.xbm"
48 #include "cdiag.xbm"
49 #include "horiz.xbm"
50 #include "verti.xbm"
51 #include "cross.xbm"
52 #define num_hatches 6
53
54 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
55 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
56
57
58 static GdkPixmap *hatches[num_hatches];
59 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
60
61 extern GtkWidget *wxGetRootWindow();
62
63 //-----------------------------------------------------------------------------
64 // constants
65 //-----------------------------------------------------------------------------
66
67 const double RAD2DEG = 180.0 / M_PI;
68
69 // ----------------------------------------------------------------------------
70 // private functions
71 // ----------------------------------------------------------------------------
72
73 static inline double dmax(double a, double b) { return a > b ? a : b; }
74 static inline double dmin(double a, double b) { return a < b ? a : b; }
75
76 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
77
78 //-----------------------------------------------------------------------------
79 // temporary implementation of the missing GDK function
80 //-----------------------------------------------------------------------------
81
82 #include "gdk/gdkprivate.h"
83
84 static
85 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94 {
95 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
96 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
98
99 gint src_width, src_height;
100 gdk_drawable_get_size(src, &src_width, &src_height);
101 if (width == -1) width = src_width;
102 if (height == -1) height = src_height;
103
104 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
105 GDK_WINDOW_XID(src),
106 GDK_WINDOW_XID(drawable),
107 GDK_GC_XGC(gc),
108 xsrc, ysrc,
109 width, height,
110 0, 0,
111 1 );
112 }
113
114 //-----------------------------------------------------------------------------
115 // Implement Pool of Graphic contexts. Creating them takes too much time.
116 //-----------------------------------------------------------------------------
117
118 enum wxPoolGCType
119 {
120 wxGC_ERROR = 0,
121 wxTEXT_MONO,
122 wxBG_MONO,
123 wxPEN_MONO,
124 wxBRUSH_MONO,
125 wxTEXT_COLOUR,
126 wxBG_COLOUR,
127 wxPEN_COLOUR,
128 wxBRUSH_COLOUR,
129 wxTEXT_SCREEN,
130 wxBG_SCREEN,
131 wxPEN_SCREEN,
132 wxBRUSH_SCREEN
133 };
134
135 struct wxGC
136 {
137 GdkGC *m_gc;
138 wxPoolGCType m_type;
139 bool m_used;
140 };
141
142 #define GC_POOL_ALLOC_SIZE 100
143
144 static int wxGCPoolSize = 0;
145
146 static wxGC *wxGCPool = NULL;
147
148 static void wxInitGCPool()
149 {
150 // This really could wait until the first call to
151 // wxGetPoolGC, but we will make the first allocation
152 // now when other initialization is being performed.
153
154 // Set initial pool size.
155 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
156
157 // Allocate initial pool.
158 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
159 if (wxGCPool == NULL)
160 {
161 // If we cannot malloc, then fail with error
162 // when debug is enabled. If debug is not enabled,
163 // the problem will eventually get caught
164 // in wxGetPoolGC.
165 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
166 return;
167 }
168
169 // Zero initial pool.
170 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
171 }
172
173 static void wxCleanUpGCPool()
174 {
175 for (int i = 0; i < wxGCPoolSize; i++)
176 {
177 if (wxGCPool[i].m_gc)
178 g_object_unref (wxGCPool[i].m_gc);
179 }
180
181 free(wxGCPool);
182 wxGCPool = NULL;
183 wxGCPoolSize = 0;
184 }
185
186 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
187 {
188 wxGC *pptr;
189
190 // Look for an available GC.
191 for (int i = 0; i < wxGCPoolSize; i++)
192 {
193 if (!wxGCPool[i].m_gc)
194 {
195 wxGCPool[i].m_gc = gdk_gc_new( window );
196 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
197 wxGCPool[i].m_type = type;
198 wxGCPool[i].m_used = false;
199 }
200 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
201 {
202 wxGCPool[i].m_used = true;
203 return wxGCPool[i].m_gc;
204 }
205 }
206
207 // We did not find an available GC.
208 // We need to grow the GC pool.
209 pptr = (wxGC *)realloc(wxGCPool,
210 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
211 if (pptr != NULL)
212 {
213 // Initialize newly allocated pool.
214 wxGCPool = pptr;
215 memset(&wxGCPool[wxGCPoolSize], 0,
216 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
217
218 // Initialize entry we will return.
219 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
220 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
221 wxGCPool[wxGCPoolSize].m_type = type;
222 wxGCPool[wxGCPoolSize].m_used = true;
223
224 // Set new value of pool size.
225 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
226
227 // Return newly allocated entry.
228 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
229 }
230
231 // The realloc failed. Fall through to error.
232 wxFAIL_MSG( wxT("No GC available") );
233
234 return (GdkGC*) NULL;
235 }
236
237 static void wxFreePoolGC( GdkGC *gc )
238 {
239 for (int i = 0; i < wxGCPoolSize; i++)
240 {
241 if (wxGCPool[i].m_gc == gc)
242 {
243 wxGCPool[i].m_used = false;
244 return;
245 }
246 }
247
248 wxFAIL_MSG( wxT("Wrong GC") );
249 }
250
251 //-----------------------------------------------------------------------------
252 // wxWindowDC
253 //-----------------------------------------------------------------------------
254
255 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
256
257 wxWindowDC::wxWindowDC()
258 {
259 m_penGC = (GdkGC *) NULL;
260 m_brushGC = (GdkGC *) NULL;
261 m_textGC = (GdkGC *) NULL;
262 m_bgGC = (GdkGC *) NULL;
263 m_cmap = (GdkColormap *) NULL;
264 m_isMemDC = false;
265 m_isScreenDC = false;
266 m_owner = (wxWindow *)NULL;
267 m_context = (PangoContext *)NULL;
268 m_layout = (PangoLayout *)NULL;
269 m_fontdesc = (PangoFontDescription *)NULL;
270 }
271
272 wxWindowDC::wxWindowDC( wxWindow *window )
273 {
274 wxASSERT_MSG( window, wxT("DC needs a window") );
275
276 m_penGC = (GdkGC *) NULL;
277 m_brushGC = (GdkGC *) NULL;
278 m_textGC = (GdkGC *) NULL;
279 m_bgGC = (GdkGC *) NULL;
280 m_cmap = (GdkColormap *) NULL;
281 m_owner = (wxWindow *)NULL;
282 m_isMemDC = false;
283 m_isScreenDC = false;
284 m_font = window->GetFont();
285
286 GtkWidget *widget = window->m_wxwindow;
287
288 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
289 // code should still be able to create wxClientDCs for them, so we will
290 // use the parent window here then.
291 if ( !widget )
292 {
293 window = window->GetParent();
294 widget = window->m_wxwindow;
295 }
296
297 wxASSERT_MSG( widget, wxT("DC needs a widget") );
298
299 m_context = window->GtkGetPangoDefaultContext();
300 m_layout = pango_layout_new( m_context );
301 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
302
303 GtkPizza *pizza = GTK_PIZZA( widget );
304 m_window = pizza->bin_window;
305
306 // Window not realized ?
307 if (!m_window)
308 {
309 // Don't report problems as per MSW.
310 m_ok = true;
311
312 return;
313 }
314
315 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
316
317 SetUpDC();
318
319 /* this must be done after SetUpDC, bacause SetUpDC calls the
320 repective SetBrush, SetPen, SetBackground etc functions
321 to set up the DC. SetBackground call m_owner->SetBackground
322 and this might not be desired as the standard dc background
323 is white whereas a window might assume gray to be the
324 standard (as e.g. wxStatusBar) */
325
326 m_owner = window;
327
328 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
329 {
330 // reverse sense
331 m_signX = -1;
332
333 // origin in the upper right corner
334 m_deviceOriginX = m_owner->GetClientSize().x;
335 }
336 }
337
338 wxWindowDC::~wxWindowDC()
339 {
340 Destroy();
341
342 if (m_layout)
343 g_object_unref (m_layout);
344 if (m_fontdesc)
345 pango_font_description_free( m_fontdesc );
346 }
347
348 void wxWindowDC::SetUpDC()
349 {
350 m_ok = true;
351
352 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
353
354 if (m_isScreenDC)
355 {
356 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
357 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
358 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
359 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
360 }
361 else
362 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
363 {
364 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
365 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
366 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
367 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
368 }
369 else
370 {
371 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
372 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
373 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
374 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
375 }
376
377 /* background colour */
378 m_backgroundBrush = *wxWHITE_BRUSH;
379 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
380 #ifdef __WXGTK24__
381 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
382 #else
383 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
384 #endif
385
386 /* m_textGC */
387 m_textForegroundColour.CalcPixel( m_cmap );
388 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
389
390 m_textBackgroundColour.CalcPixel( m_cmap );
391 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
392
393 gdk_gc_set_fill( m_textGC, GDK_SOLID );
394
395 /* m_penGC */
396 m_pen.GetColour().CalcPixel( m_cmap );
397 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
398 gdk_gc_set_background( m_penGC, bg_col );
399
400 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
401
402 /* m_brushGC */
403 m_brush.GetColour().CalcPixel( m_cmap );
404 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
405 gdk_gc_set_background( m_brushGC, bg_col );
406
407 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
408
409 /* m_bgGC */
410 gdk_gc_set_background( m_bgGC, bg_col );
411 gdk_gc_set_foreground( m_bgGC, bg_col );
412
413 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
414
415 /* ROPs */
416 gdk_gc_set_function( m_textGC, GDK_COPY );
417 gdk_gc_set_function( m_brushGC, GDK_COPY );
418 gdk_gc_set_function( m_penGC, GDK_COPY );
419
420 /* clipping */
421 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
422 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
423 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
424 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
425
426 if (!hatch_bitmap)
427 {
428 hatch_bitmap = hatches;
429 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
430 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
431 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
432 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
433 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
434 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
435 }
436 }
437
438 void wxWindowDC::DoGetSize( int* width, int* height ) const
439 {
440 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
441
442 m_owner->GetSize(width, height);
443 }
444
445 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
446 const wxColour & col, int style);
447
448 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
449 const wxColour& col, int style)
450 {
451 return wxDoFloodFill(this, x, y, col, style);
452 }
453
454 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
455 {
456 // Generic (and therefore rather inefficient) method.
457 // Could be improved.
458 wxMemoryDC memdc;
459 wxBitmap bitmap(1, 1);
460 memdc.SelectObject(bitmap);
461 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
462 memdc.SelectObject(wxNullBitmap);
463
464 wxImage image = bitmap.ConvertToImage();
465 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
466 return true;
467 }
468
469 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
470 {
471 wxCHECK_RET( Ok(), wxT("invalid window dc") );
472
473 if (m_pen.GetStyle() != wxTRANSPARENT)
474 {
475 if (m_window)
476 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
477
478 CalcBoundingBox(x1, y1);
479 CalcBoundingBox(x2, y2);
480 }
481 }
482
483 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
484 {
485 wxCHECK_RET( Ok(), wxT("invalid window dc") );
486
487 if (m_pen.GetStyle() != wxTRANSPARENT)
488 {
489 int w = 0;
490 int h = 0;
491 GetSize( &w, &h );
492 wxCoord xx = XLOG2DEV(x);
493 wxCoord yy = YLOG2DEV(y);
494 if (m_window)
495 {
496 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
497 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
498 }
499 }
500 }
501
502 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
503 wxCoord xc, wxCoord yc )
504 {
505 wxCHECK_RET( Ok(), wxT("invalid window dc") );
506
507 wxCoord xx1 = XLOG2DEV(x1);
508 wxCoord yy1 = YLOG2DEV(y1);
509 wxCoord xx2 = XLOG2DEV(x2);
510 wxCoord yy2 = YLOG2DEV(y2);
511 wxCoord xxc = XLOG2DEV(xc);
512 wxCoord yyc = YLOG2DEV(yc);
513 double dx = xx1 - xxc;
514 double dy = yy1 - yyc;
515 double radius = sqrt((double)(dx*dx+dy*dy));
516 wxCoord r = (wxCoord)radius;
517 double radius1, radius2;
518
519 if (xx1 == xx2 && yy1 == yy2)
520 {
521 radius1 = 0.0;
522 radius2 = 360.0;
523 }
524 else if ( wxIsNullDouble(radius) )
525 {
526 radius1 =
527 radius2 = 0.0;
528 }
529 else
530 {
531 radius1 = (xx1 - xxc == 0) ?
532 (yy1 - yyc < 0) ? 90.0 : -90.0 :
533 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
534 radius2 = (xx2 - xxc == 0) ?
535 (yy2 - yyc < 0) ? 90.0 : -90.0 :
536 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
537 }
538 wxCoord alpha1 = wxCoord(radius1 * 64.0);
539 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
540 while (alpha2 <= 0) alpha2 += 360*64;
541 while (alpha1 > 360*64) alpha1 -= 360*64;
542
543 if (m_window)
544 {
545 if (m_brush.GetStyle() != wxTRANSPARENT)
546 {
547 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
548 {
549 gdk_gc_set_ts_origin( m_textGC,
550 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
551 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
552 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
553 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
554 } else
555 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
556 {
557 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
558 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
559 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
560 } else
561 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
562 {
563 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
564 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
565 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
566 } else
567 if (m_brush.GetStyle() == wxSTIPPLE)
568 {
569 gdk_gc_set_ts_origin( m_brushGC,
570 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
571 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
572 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
573 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
574 }
575 else
576 {
577 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
578 }
579 }
580
581 if (m_pen.GetStyle() != wxTRANSPARENT)
582 {
583 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
584
585 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
586 {
587 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
588 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
589 }
590 }
591 }
592
593 CalcBoundingBox (x1, y1);
594 CalcBoundingBox (x2, y2);
595 }
596
597 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
598 {
599 wxCHECK_RET( Ok(), wxT("invalid window dc") );
600
601 wxCoord xx = XLOG2DEV(x);
602 wxCoord yy = YLOG2DEV(y);
603 wxCoord ww = m_signX * XLOG2DEVREL(width);
604 wxCoord hh = m_signY * YLOG2DEVREL(height);
605
606 // CMB: handle -ve width and/or height
607 if (ww < 0) { ww = -ww; xx = xx - ww; }
608 if (hh < 0) { hh = -hh; yy = yy - hh; }
609
610 if (m_window)
611 {
612 wxCoord start = wxCoord(sa * 64.0);
613 wxCoord end = wxCoord((ea-sa) * 64.0);
614
615 if (m_brush.GetStyle() != wxTRANSPARENT)
616 {
617 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
618 {
619 gdk_gc_set_ts_origin( m_textGC,
620 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
621 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
622 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
623 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
624 } else
625 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
626 {
627 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
628 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
629 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
630 } else
631 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
632 {
633 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
634 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
635 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
636 } else
637 if (m_brush.GetStyle() == wxSTIPPLE)
638 {
639 gdk_gc_set_ts_origin( m_brushGC,
640 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
641 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
642 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
643 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
644 }
645 else
646 {
647 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
648 }
649 }
650
651 if (m_pen.GetStyle() != wxTRANSPARENT)
652 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
653 }
654
655 CalcBoundingBox (x, y);
656 CalcBoundingBox (x + width, y + height);
657 }
658
659 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
660 {
661 wxCHECK_RET( Ok(), wxT("invalid window dc") );
662
663 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
664 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
665
666 CalcBoundingBox (x, y);
667 }
668
669 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
670 {
671 wxCHECK_RET( Ok(), wxT("invalid window dc") );
672
673 if (m_pen.GetStyle() == wxTRANSPARENT) return;
674 if (n <= 0) return;
675
676 //Check, if scaling is necessary
677 const bool doScale =
678 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
679
680 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
681 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
682
683 if (doScale)
684 gpts = new GdkPoint[n];
685
686 for (int i = 0; i < n; i++)
687 {
688 if (doScale)
689 {
690 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
691 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
692 }
693 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
694 }
695
696 if (m_window)
697 gdk_draw_lines( m_window, m_penGC, gpts, n);
698
699 if (doScale)
700 delete[] gpts;
701 }
702
703 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
704 {
705 wxCHECK_RET( Ok(), wxT("invalid window dc") );
706
707 if (n <= 0) return;
708
709 //Check, if scaling is necessary
710 const bool doScale =
711 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
712
713 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
714 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
715
716 if (doScale)
717 gdkpoints = new GdkPoint[n];
718
719 int i;
720 for (i = 0 ; i < n ; i++)
721 {
722 if (doScale)
723 {
724 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
725 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
726 }
727 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
728 }
729
730 if (m_window)
731 {
732 if (m_brush.GetStyle() != wxTRANSPARENT)
733 {
734 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
735 {
736 gdk_gc_set_ts_origin( m_textGC,
737 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
738 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
739 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
740 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
741 } else
742 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
743 {
744 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
745 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
746 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
747 } else
748 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
749 {
750 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
751 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
752 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
753 } else
754 if (m_brush.GetStyle() == wxSTIPPLE)
755 {
756 gdk_gc_set_ts_origin( m_brushGC,
757 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
758 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
759 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
760 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
761 }
762 else
763 {
764 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
765 }
766 }
767
768 if (m_pen.GetStyle() != wxTRANSPARENT)
769 {
770 /*
771 for (i = 0 ; i < n ; i++)
772 {
773 gdk_draw_line( m_window, m_penGC,
774 gdkpoints[i%n].x,
775 gdkpoints[i%n].y,
776 gdkpoints[(i+1)%n].x,
777 gdkpoints[(i+1)%n].y);
778 }
779 */
780 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
781
782 }
783 }
784
785 if (doScale)
786 delete[] gdkpoints;
787 }
788
789 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
790 {
791 wxCHECK_RET( Ok(), wxT("invalid window dc") );
792
793 wxCoord xx = XLOG2DEV(x);
794 wxCoord yy = YLOG2DEV(y);
795 wxCoord ww = m_signX * XLOG2DEVREL(width);
796 wxCoord hh = m_signY * YLOG2DEVREL(height);
797
798 // CMB: draw nothing if transformed w or h is 0
799 if (ww == 0 || hh == 0) return;
800
801 // CMB: handle -ve width and/or height
802 if (ww < 0) { ww = -ww; xx = xx - ww; }
803 if (hh < 0) { hh = -hh; yy = yy - hh; }
804
805 if (m_window)
806 {
807 if (m_brush.GetStyle() != wxTRANSPARENT)
808 {
809 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
810 {
811 gdk_gc_set_ts_origin( m_textGC,
812 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
813 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
814 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
815 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
816 } else
817 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
818 {
819 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
820 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
821 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
822 } else
823 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
824 {
825 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
826 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
827 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
828 } else
829 if (m_brush.GetStyle() == wxSTIPPLE)
830 {
831 gdk_gc_set_ts_origin( m_brushGC,
832 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
833 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
834 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
835 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
836 }
837 else
838 {
839 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
840 }
841 }
842
843 if (m_pen.GetStyle() != wxTRANSPARENT)
844 {
845 #if 1
846 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
847 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
848 {
849 // Use 2 1-line rects instead
850 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
851
852 if (m_signX == -1)
853 {
854 // Different for RTL
855 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
856 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
857 }
858 else
859 {
860 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
861 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
862 }
863
864 // reset
865 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
866 }
867 else
868 #endif
869 {
870 // Just use X11 for other cases
871 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
872 }
873 }
874 }
875
876 CalcBoundingBox( x, y );
877 CalcBoundingBox( x + width, y + height );
878 }
879
880 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
881 {
882 wxCHECK_RET( Ok(), wxT("invalid window dc") );
883
884 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
885
886 wxCoord xx = XLOG2DEV(x);
887 wxCoord yy = YLOG2DEV(y);
888 wxCoord ww = m_signX * XLOG2DEVREL(width);
889 wxCoord hh = m_signY * YLOG2DEVREL(height);
890 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
891
892 // CMB: handle -ve width and/or height
893 if (ww < 0) { ww = -ww; xx = xx - ww; }
894 if (hh < 0) { hh = -hh; yy = yy - hh; }
895
896 // CMB: if radius is zero use DrawRectangle() instead to avoid
897 // X drawing errors with small radii
898 if (rr == 0)
899 {
900 DrawRectangle( x, y, width, height );
901 return;
902 }
903
904 // CMB: draw nothing if transformed w or h is 0
905 if (ww == 0 || hh == 0) return;
906
907 // CMB: adjust size if outline is drawn otherwise the result is
908 // 1 pixel too wide and high
909 if (m_pen.GetStyle() != wxTRANSPARENT)
910 {
911 ww--;
912 hh--;
913 }
914
915 if (m_window)
916 {
917 // CMB: ensure dd is not larger than rectangle otherwise we
918 // get an hour glass shape
919 wxCoord dd = 2 * rr;
920 if (dd > ww) dd = ww;
921 if (dd > hh) dd = hh;
922 rr = dd / 2;
923
924 if (m_brush.GetStyle() != wxTRANSPARENT)
925 {
926 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
927 {
928 gdk_gc_set_ts_origin( m_textGC,
929 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
930 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
931 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
932 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
934 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
935 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
936 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
937 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
938 } else
939 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
940 {
941 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
943 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
948 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
949 } else
950 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
951 {
952 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
953 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
954 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
959 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
960 } else
961 if (m_brush.GetStyle() == wxSTIPPLE)
962 {
963 gdk_gc_set_ts_origin( m_brushGC,
964 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
965 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
966 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
967 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
970 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
972 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
973 }
974 else
975 {
976 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
977 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
979 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
980 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
981 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
982 }
983 }
984
985 if (m_pen.GetStyle() != wxTRANSPARENT)
986 {
987 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
988 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
989 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
990 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
992 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
993 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
994 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
995 }
996 }
997
998 // this ignores the radius
999 CalcBoundingBox( x, y );
1000 CalcBoundingBox( x + width, y + height );
1001 }
1002
1003 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1004 {
1005 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1006
1007 wxCoord xx = XLOG2DEV(x);
1008 wxCoord yy = YLOG2DEV(y);
1009 wxCoord ww = m_signX * XLOG2DEVREL(width);
1010 wxCoord hh = m_signY * YLOG2DEVREL(height);
1011
1012 // CMB: handle -ve width and/or height
1013 if (ww < 0) { ww = -ww; xx = xx - ww; }
1014 if (hh < 0) { hh = -hh; yy = yy - hh; }
1015
1016 if (m_window)
1017 {
1018 if (m_brush.GetStyle() != wxTRANSPARENT)
1019 {
1020 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1021 {
1022 gdk_gc_set_ts_origin( m_textGC,
1023 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1024 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1025 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1026 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1027 } else
1028 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1029 {
1030 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1031 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1032 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1033 } else
1034 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1035 {
1036 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1037 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1038 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1039 } else
1040 if (m_brush.GetStyle() == wxSTIPPLE)
1041 {
1042 gdk_gc_set_ts_origin( m_brushGC,
1043 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1044 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1045 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1046 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1047 }
1048 else
1049 {
1050 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1051 }
1052 }
1053
1054 if (m_pen.GetStyle() != wxTRANSPARENT)
1055 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1056 }
1057
1058 CalcBoundingBox( x, y );
1059 CalcBoundingBox( x + width, y + height );
1060 }
1061
1062 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1063 {
1064 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1065 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1066 }
1067
1068 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1069 wxCoord x, wxCoord y,
1070 bool useMask )
1071 {
1072 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1073
1074 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1075
1076 bool is_mono = bitmap.GetDepth() == 1;
1077
1078 // scale/translate size and position
1079 int xx = XLOG2DEV(x);
1080 int yy = YLOG2DEV(y);
1081
1082 int w = bitmap.GetWidth();
1083 int h = bitmap.GetHeight();
1084
1085 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1086 xx -= w;
1087
1088 CalcBoundingBox( x, y );
1089 CalcBoundingBox( x + w, y + h );
1090
1091 if (!m_window) return;
1092
1093 int ww = XLOG2DEVREL(w);
1094 int hh = YLOG2DEVREL(h);
1095
1096 // compare to current clipping region
1097 if (!m_currentClippingRegion.IsNull())
1098 {
1099 wxRegion tmp( xx,yy,ww,hh );
1100 tmp.Intersect( m_currentClippingRegion );
1101 if (tmp.IsEmpty())
1102 return;
1103 }
1104
1105 // scale bitmap if required
1106 wxBitmap use_bitmap = bitmap;
1107 if ((w != ww) || (h != hh))
1108 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1109
1110 #if !GTK_CHECK_VERSION(2,2,0)
1111 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1112 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1113 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1114 // and also creates the mask as a side-effect:
1115 use_bitmap.GetPixmap();
1116 #endif
1117
1118 // apply mask if any
1119 GdkBitmap *mask = (GdkBitmap *) NULL;
1120 if (useMask && use_bitmap.GetMask())
1121 mask = use_bitmap.GetMask()->GetBitmap();
1122
1123 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1124
1125 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1126
1127 if (mask != NULL)
1128 {
1129 if (!m_currentClippingRegion.IsNull())
1130 {
1131 GdkColor col;
1132 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1133 GdkGC *gc = gdk_gc_new( new_mask );
1134 col.pixel = 0;
1135 gdk_gc_set_foreground( gc, &col );
1136 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1137 col.pixel = 0;
1138 gdk_gc_set_background( gc, &col );
1139 col.pixel = 1;
1140 gdk_gc_set_foreground( gc, &col );
1141 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1142 gdk_gc_set_clip_origin( gc, -xx, -yy );
1143 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1144 gdk_gc_set_stipple( gc, mask );
1145 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1146 mask = new_mask;
1147 g_object_unref (gc);
1148 }
1149
1150 gdk_gc_set_clip_mask(use_gc, mask);
1151 gdk_gc_set_clip_origin(use_gc, xx, yy);
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.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1163
1164 gdk_draw_drawable(m_window, use_gc, 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, use_gc,
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, use_gc,
1183 use_bitmap.GetPixmap(),
1184 0, 0, xx, yy, -1, -1);
1185 }
1186 }
1187
1188 // remove mask again if any
1189 if (mask != NULL)
1190 {
1191 gdk_gc_set_clip_mask(use_gc, NULL);
1192 gdk_gc_set_clip_origin(use_gc, 0, 0);
1193 if (!m_currentClippingRegion.IsNull())
1194 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1195 if (new_mask != NULL)
1196 g_object_unref(new_mask);
1197 }
1198 }
1199
1200 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1201 wxCoord width, wxCoord height,
1202 wxDC *source,
1203 wxCoord xsrc, wxCoord ysrc,
1204 int logical_func,
1205 bool useMask,
1206 wxCoord xsrcMask, wxCoord ysrcMask )
1207 {
1208 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1209
1210 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1211
1212 if (!m_window) return false;
1213
1214 // transform the source DC coords to the device ones
1215 xsrc = source->LogicalToDeviceX(xsrc);
1216 ysrc = source->LogicalToDeviceY(ysrc);
1217
1218 wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
1219 wxBitmap selected = source->GetSelectedBitmap();
1220
1221 bool use_bitmap_method = false;
1222 bool is_mono = false;
1223
1224 if (xsrcMask == -1 && ysrcMask == -1)
1225 {
1226 xsrcMask = xsrc;
1227 ysrcMask = ysrc;
1228 }
1229
1230 if (memDC && !selected.Ok()) return false;
1231
1232 if (selected.Ok())
1233 {
1234 is_mono = (selected.GetDepth() == 1);
1235
1236 // we use the "XCopyArea" way to copy a memory dc into
1237 // a different window if the memory dc BOTH
1238 // a) doesn't have any mask or its mask isn't used
1239 // b) it is clipped
1240 // c) is not 1-bit
1241
1242 if (useMask && (selected.GetMask()))
1243 {
1244 // we HAVE TO use the direct way for memory dcs
1245 // that have mask since the XCopyArea doesn't know
1246 // about masks
1247 use_bitmap_method = true;
1248 }
1249 else if (is_mono)
1250 {
1251 // we HAVE TO use the direct way for memory dcs
1252 // that are bitmaps because XCopyArea doesn't cope
1253 // with different bit depths
1254 use_bitmap_method = true;
1255 }
1256 else if ((xsrc == 0) && (ysrc == 0) &&
1257 (width == selected.GetWidth()) &&
1258 (height == selected.GetHeight()))
1259 {
1260 // we SHOULD use the direct way if all of the bitmap
1261 // in the memory dc is copied in which case XCopyArea
1262 // wouldn't be able able to boost performace by reducing
1263 // the area to be scaled
1264 use_bitmap_method = true;
1265 }
1266 }
1267
1268 CalcBoundingBox( xdest, ydest );
1269 CalcBoundingBox( xdest + width, ydest + height );
1270
1271 // scale/translate size and position
1272 wxCoord xx = XLOG2DEV(xdest);
1273 wxCoord yy = YLOG2DEV(ydest);
1274
1275 wxCoord ww = XLOG2DEVREL(width);
1276 wxCoord hh = YLOG2DEVREL(height);
1277
1278 // compare to current clipping region
1279 if (!m_currentClippingRegion.IsNull())
1280 {
1281 wxRegion tmp( xx,yy,ww,hh );
1282 tmp.Intersect( m_currentClippingRegion );
1283 if (tmp.IsEmpty())
1284 return true;
1285 }
1286
1287 int old_logical_func = m_logicalFunction;
1288 SetLogicalFunction( logical_func );
1289
1290 if (use_bitmap_method)
1291 {
1292 // scale/translate bitmap size
1293 wxCoord bm_width = selected.GetWidth();
1294 wxCoord bm_height = selected.GetHeight();
1295
1296 // Get clip coords for the bitmap. If we don't
1297 // use wxBitmap::Rescale(), which can clip the
1298 // bitmap, these are the same as the original
1299 // coordinates
1300 wxCoord cx = xx;
1301 wxCoord cy = yy;
1302 wxCoord cw = ww;
1303 wxCoord ch = hh;
1304
1305 // interpret userscale of src too
1306 double xsc,ysc;
1307 memDC->GetUserScale(&xsc,&ysc);
1308 bm_width = (int) (bm_width / xsc);
1309 bm_height = (int) (bm_height / ysc);
1310
1311 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1312 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1313
1314 // Scale bitmap if required
1315 wxBitmap use_bitmap = selected;
1316 if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
1317 {
1318 // This indicates that the blitting code below will get
1319 // a clipped bitmap and therefore needs to move the origin
1320 // accordingly
1321 wxRegion tmp( xx,yy,ww,hh );
1322 tmp.Intersect( m_currentClippingRegion );
1323 tmp.GetBox(cx,cy,cw,ch);
1324
1325 // Scale and clipped bitmap
1326 use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1327 }
1328
1329 // apply mask if any
1330 GdkBitmap *mask = (GdkBitmap *) NULL;
1331 if (useMask && use_bitmap.GetMask())
1332 mask = use_bitmap.GetMask()->GetBitmap();
1333
1334 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1335
1336 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1337
1338 if (mask != NULL)
1339 {
1340 if (!m_currentClippingRegion.IsNull())
1341 {
1342 GdkColor col;
1343 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1344 GdkGC *gc = gdk_gc_new( new_mask );
1345 col.pixel = 0;
1346 gdk_gc_set_foreground( gc, &col );
1347 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1348 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1349 col.pixel = 0;
1350 gdk_gc_set_background( gc, &col );
1351 col.pixel = 1;
1352 gdk_gc_set_foreground( gc, &col );
1353 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1354 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1355 gdk_gc_set_clip_origin( gc, -cx, -cy );
1356 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1357 gdk_gc_set_stipple( gc, mask );
1358 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1359 mask = new_mask;
1360 g_object_unref (gc);
1361 }
1362
1363 gdk_gc_set_clip_mask(use_gc, mask);
1364 if (new_mask != NULL)
1365 gdk_gc_set_clip_origin(use_gc, cx, cy);
1366 else
1367 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1368 }
1369
1370 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1371 // drawing a mono-bitmap (XBitmap) we use the current text GC
1372
1373 if (is_mono)
1374 {
1375 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1376 GdkGC *gc = gdk_gc_new( bitmap );
1377 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1378 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1379 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1380
1381 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1382
1383 g_object_unref (bitmap);
1384 g_object_unref (gc);
1385 }
1386 else
1387 {
1388 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1389 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1390 }
1391
1392 // remove mask again if any
1393 if (mask != NULL)
1394 {
1395 gdk_gc_set_clip_mask(use_gc, NULL);
1396 gdk_gc_set_clip_origin(use_gc, 0, 0);
1397 if (!m_currentClippingRegion.IsNull())
1398 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1399 }
1400
1401 if (new_mask)
1402 g_object_unref (new_mask);
1403 }
1404 else // use_bitmap_method
1405 {
1406 if (selected.Ok() && ((width != ww) || (height != hh)))
1407 {
1408 // get clip coords
1409 wxRegion tmp( xx,yy,ww,hh );
1410 tmp.Intersect( m_currentClippingRegion );
1411 wxCoord cx,cy,cw,ch;
1412 tmp.GetBox(cx,cy,cw,ch);
1413
1414 // rescale bitmap
1415 wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1416
1417 // draw scaled bitmap
1418 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1419 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1420 }
1421 else
1422 {
1423 // No scaling and not a memory dc with a mask either
1424
1425 GdkWindow* window = source->GetGDKWindow();
1426 if ( !window )
1427 return false;
1428
1429 // copy including child window contents
1430 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1431 gdk_draw_drawable( m_window, m_penGC,
1432 window,
1433 xsrc, ysrc, xx, yy,
1434 width, height );
1435 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1436 }
1437 }
1438
1439 SetLogicalFunction( old_logical_func );
1440
1441 return true;
1442 }
1443
1444 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1445 {
1446 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1447
1448 if (!m_window) return;
1449
1450 if (text.empty()) return;
1451
1452 x = XLOG2DEV(x);
1453 y = YLOG2DEV(y);
1454
1455 wxCHECK_RET( m_context, wxT("no Pango context") );
1456 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1457 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1458
1459 gdk_pango_context_set_colormap( m_context, m_cmap );
1460
1461 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1462
1463 const wxCharBuffer data = wxGTK_CONV( text );
1464 if ( !data )
1465 return;
1466 size_t datalen = strlen(data);
1467
1468 // TODO: as soon as Pango provides a function to check at runtime its
1469 // version, we can use it to disable the underline hack for
1470 // Pango >= 1.16 as the "underline of leading/trailing spaces"
1471 // has been fixed there
1472 bool needshack = underlined;
1473 char *hackstring = NULL;
1474
1475 if (needshack)
1476 {
1477 // a PangoLayout which has leading/trailing spaces with underlined font
1478 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1479 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1480 // this behaviour. To workaround this problem, we use a special hack here
1481 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1482 // empty space characters and give them a dummy colour attribute.
1483 // This will force Pango to underline the leading/trailing spaces, too.
1484
1485 // need to realloc the string to prepend & append our special characters
1486 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1487
1488 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1489 strcpy(hackstring, "\342\200\214");
1490
1491 // copy the user string
1492 memcpy(&hackstring[3], data, datalen);
1493
1494 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1495 strcpy(&hackstring[datalen+3], "\342\200\214");
1496
1497 // the special characters that we added require 6 additional bytes:
1498 datalen += 6;
1499
1500 pango_layout_set_text(m_layout, hackstring, datalen);
1501 }
1502 else
1503 {
1504 pango_layout_set_text(m_layout, data, datalen);
1505 }
1506
1507 if (underlined)
1508 {
1509 PangoAttrList *attrs = pango_attr_list_new();
1510 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1511 a->start_index = 0;
1512 a->end_index = datalen;
1513 pango_attr_list_insert(attrs, a);
1514
1515 if (needshack)
1516 {
1517 // dummy colour for the leading space
1518 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1519 a->start_index = 0;
1520 a->end_index = 1;
1521 pango_attr_list_insert(attrs, a);
1522
1523 // dummy colour for the trailing space
1524 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1525 a->start_index = datalen - 1;
1526 a->end_index = datalen;
1527 pango_attr_list_insert(attrs, a);
1528 }
1529
1530 pango_layout_set_attributes(m_layout, attrs);
1531 pango_attr_list_unref(attrs);
1532 }
1533
1534 int w,h;
1535
1536 if (fabs(m_scaleY - 1.0) > 0.00001)
1537 {
1538 // If there is a user or actually any scale applied to
1539 // the device context, scale the font.
1540
1541 // scale font description
1542 gint oldSize = pango_font_description_get_size( m_fontdesc );
1543 double size = oldSize;
1544 size = size * m_scaleY;
1545 pango_font_description_set_size( m_fontdesc, (gint)size );
1546
1547 // actually apply scaled font
1548 pango_layout_set_font_description( m_layout, m_fontdesc );
1549
1550 pango_layout_get_pixel_size( m_layout, &w, &h );
1551 if ( m_backgroundMode == wxSOLID )
1552 {
1553 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1554 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1555 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1556 }
1557
1558 // Draw layout.
1559 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1560 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1561 else
1562 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1563
1564 // reset unscaled size
1565 pango_font_description_set_size( m_fontdesc, oldSize );
1566
1567 // actually apply unscaled font
1568 pango_layout_set_font_description( m_layout, m_fontdesc );
1569 }
1570 else
1571 {
1572 pango_layout_get_pixel_size( m_layout, &w, &h );
1573 if ( m_backgroundMode == wxSOLID )
1574 {
1575 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1576 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1577 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1578 }
1579
1580 // Draw layout.
1581 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1582 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1583 else
1584 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1585 }
1586
1587 if (underlined)
1588 {
1589 // undo underline attributes setting:
1590 pango_layout_set_attributes(m_layout, NULL);
1591 }
1592
1593 wxCoord width = w;
1594 wxCoord height = h;
1595
1596 width = wxCoord(width / m_scaleX);
1597 height = wxCoord(height / m_scaleY);
1598 CalcBoundingBox (x + width, y + height);
1599 CalcBoundingBox (x, y);
1600
1601 if (hackstring)
1602 free(hackstring);
1603 }
1604
1605
1606 // TODO: There is an example of rotating text with GTK2 that would probably be
1607 // a better approach here:
1608 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1609
1610 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1611 {
1612 if (!m_window || text.empty())
1613 return;
1614
1615 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1616
1617 if ( wxIsNullDouble(angle) )
1618 {
1619 DrawText(text, x, y);
1620 return;
1621 }
1622
1623 wxCoord w;
1624 wxCoord h;
1625
1626 // TODO: implement later without GdkFont for GTK 2.0
1627 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1628
1629 // draw the string normally
1630 wxBitmap src(w, h);
1631 wxMemoryDC dc;
1632 dc.SelectObject(src);
1633 dc.SetFont(GetFont());
1634 dc.SetBackground(*wxBLACK_BRUSH);
1635 dc.SetBrush(*wxBLACK_BRUSH);
1636 dc.Clear();
1637 dc.SetTextForeground( *wxWHITE );
1638 dc.DrawText(text, 0, 0);
1639 dc.SelectObject(wxNullBitmap);
1640
1641 // Calculate the size of the rotated bounding box.
1642 double rad = DegToRad(angle);
1643 double dx = cos(rad),
1644 dy = sin(rad);
1645
1646 // the rectngle vertices are counted clockwise with the first one being at
1647 // (0, 0) (or, rather, at (x, y))
1648 double x2 = w*dx,
1649 y2 = -w*dy; // y axis points to the bottom, hence minus
1650 double x4 = h*dy,
1651 y4 = h*dx;
1652 double x3 = x4 + x2,
1653 y3 = y4 + y2;
1654
1655 // calc max and min
1656 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1657 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1658 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1659 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1660
1661
1662 wxImage image = src.ConvertToImage();
1663
1664 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1665 m_textForegroundColour.Green(),
1666 m_textForegroundColour.Blue() );
1667 image = image.Rotate( rad, wxPoint(0,0) );
1668
1669 int i_angle = (int) angle;
1670 i_angle = i_angle % 360;
1671 if (i_angle < 0)
1672 i_angle += 360;
1673 int xoffset = 0;
1674 if ((i_angle >= 90.0) && (i_angle < 270.0))
1675 xoffset = image.GetWidth();
1676 int yoffset = 0;
1677 if ((i_angle >= 0.0) && (i_angle < 180.0))
1678 yoffset = image.GetHeight();
1679
1680 if ((i_angle >= 0) && (i_angle < 90))
1681 yoffset -= (int)( cos(rad)*h );
1682 if ((i_angle >= 90) && (i_angle < 180))
1683 xoffset -= (int)( sin(rad)*h );
1684 if ((i_angle >= 180) && (i_angle < 270))
1685 yoffset -= (int)( cos(rad)*h );
1686 if ((i_angle >= 270) && (i_angle < 360))
1687 xoffset -= (int)( sin(rad)*h );
1688
1689 int i_x = x - xoffset;
1690 int i_y = y - yoffset;
1691
1692 src = image;
1693 DoDrawBitmap( src, i_x, i_y, true );
1694
1695
1696 // it would be better to draw with non underlined font and draw the line
1697 // manually here (it would be more straight...)
1698 #if 0
1699 if ( m_font.GetUnderlined() )
1700 {
1701 gdk_draw_line( m_window, m_textGC,
1702 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1703 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1704 }
1705 #endif // 0
1706
1707 // update the bounding box
1708 CalcBoundingBox(x + minX, y + minY);
1709 CalcBoundingBox(x + maxX, y + maxY);
1710 }
1711
1712 void wxWindowDC::DoGetTextExtent(const wxString &string,
1713 wxCoord *width, wxCoord *height,
1714 wxCoord *descent, wxCoord *externalLeading,
1715 wxFont *theFont) const
1716 {
1717 if ( width )
1718 *width = 0;
1719 if ( height )
1720 *height = 0;
1721 if ( descent )
1722 *descent = 0;
1723 if ( externalLeading )
1724 *externalLeading = 0;
1725
1726 if (string.empty())
1727 return;
1728
1729 // ensure that theFont is always non-NULL
1730 if ( !theFont || !theFont->Ok() )
1731 theFont = wx_const_cast(wxFont *, &m_font);
1732
1733 // and use it if it's valid
1734 if ( theFont->Ok() )
1735 {
1736 pango_layout_set_font_description
1737 (
1738 m_layout,
1739 theFont->GetNativeFontInfo()->description
1740 );
1741 }
1742
1743 // Set layout's text
1744 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1745 if ( !dataUTF8 )
1746 {
1747 // hardly ideal, but what else can we do if conversion failed?
1748 return;
1749 }
1750
1751 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1752
1753 if (descent)
1754 {
1755 int h;
1756 pango_layout_get_pixel_size( m_layout, width, &h );
1757 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1758 int baseline = pango_layout_iter_get_baseline(iter);
1759 pango_layout_iter_free(iter);
1760 *descent = h - PANGO_PIXELS(baseline);
1761
1762 if (height)
1763 *height = (wxCoord) h;
1764 }
1765 else
1766 {
1767 pango_layout_get_pixel_size( m_layout, width, height );
1768 }
1769
1770 // Reset old font description
1771 if (theFont)
1772 pango_layout_set_font_description( m_layout, m_fontdesc );
1773 }
1774
1775 wxCoord wxWindowDC::GetCharWidth() const
1776 {
1777 pango_layout_set_text( m_layout, "H", 1 );
1778 int w;
1779 pango_layout_get_pixel_size( m_layout, &w, NULL );
1780 return w;
1781 }
1782
1783 wxCoord wxWindowDC::GetCharHeight() const
1784 {
1785 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1786 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1787 }
1788
1789 void wxWindowDC::Clear()
1790 {
1791 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1792
1793 if (!m_window) return;
1794
1795 // VZ: the code below results in infinite recursion and crashes when
1796 // dc.Clear() is done from OnPaint() so I disable it for now.
1797 // I don't know what the correct fix is but Clear() surely should not
1798 // reenter OnPaint()!
1799 #if 0
1800 /* - we either are a memory dc or have a window as the
1801 owner. anything else shouldn't happen.
1802 - we don't use gdk_window_clear() as we don't set
1803 the window's background colour anymore. it is too
1804 much pain to keep the DC's and the window's back-
1805 ground colour in synch. */
1806
1807 if (m_owner)
1808 {
1809 m_owner->Clear();
1810 return;
1811 }
1812
1813 if (m_isMemDC)
1814 {
1815 int width,height;
1816 GetSize( &width, &height );
1817 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1818 return;
1819 }
1820 #else // 1
1821 int width,height;
1822 GetSize( &width, &height );
1823 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1824 #endif // 0/1
1825 }
1826
1827 void wxWindowDC::SetFont( const wxFont &font )
1828 {
1829 m_font = font;
1830
1831 if (m_font.Ok())
1832 {
1833 if (m_fontdesc)
1834 pango_font_description_free( m_fontdesc );
1835
1836 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1837
1838
1839 if (m_owner)
1840 {
1841 PangoContext *oldContext = m_context;
1842
1843 m_context = m_owner->GtkGetPangoDefaultContext();
1844
1845 // If we switch back/forth between different contexts
1846 // we also have to create a new layout. I think so,
1847 // at least, and it doesn't hurt to do it.
1848 if (oldContext != m_context)
1849 {
1850 if (m_layout)
1851 g_object_unref (m_layout);
1852
1853 m_layout = pango_layout_new( m_context );
1854 }
1855 }
1856
1857 pango_layout_set_font_description( m_layout, m_fontdesc );
1858 }
1859 }
1860
1861 void wxWindowDC::SetPen( const wxPen &pen )
1862 {
1863 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1864
1865 if (m_pen == pen) return;
1866
1867 m_pen = pen;
1868
1869 if (!m_pen.Ok()) return;
1870
1871 if (!m_window) return;
1872
1873 gint width = m_pen.GetWidth();
1874 if (width <= 0)
1875 {
1876 // CMB: if width is non-zero scale it with the dc
1877 width = 1;
1878 }
1879 else
1880 {
1881 // X doesn't allow different width in x and y and so we take
1882 // the average
1883 double w = 0.5 +
1884 ( fabs((double) XLOG2DEVREL(width)) +
1885 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1886 width = (int)w;
1887 if ( !width )
1888 {
1889 // width can't be 0 or an internal GTK error occurs inside
1890 // gdk_gc_set_dashes() below
1891 width = 1;
1892 }
1893 }
1894
1895 static const wxGTKDash dotted[] = {1, 1};
1896 static const wxGTKDash short_dashed[] = {2, 2};
1897 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1898 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1899
1900 // We express dash pattern in pen width unit, so we are
1901 // independent of zoom factor and so on...
1902 int req_nb_dash;
1903 const wxGTKDash *req_dash;
1904
1905 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1906 switch (m_pen.GetStyle())
1907 {
1908 case wxUSER_DASH:
1909 {
1910 lineStyle = GDK_LINE_ON_OFF_DASH;
1911 req_nb_dash = m_pen.GetDashCount();
1912 req_dash = (wxGTKDash*)m_pen.GetDash();
1913 break;
1914 }
1915 case wxDOT:
1916 {
1917 lineStyle = GDK_LINE_ON_OFF_DASH;
1918 req_nb_dash = 2;
1919 req_dash = dotted;
1920 break;
1921 }
1922 case wxLONG_DASH:
1923 {
1924 lineStyle = GDK_LINE_ON_OFF_DASH;
1925 req_nb_dash = 2;
1926 req_dash = wxCoord_dashed;
1927 break;
1928 }
1929 case wxSHORT_DASH:
1930 {
1931 lineStyle = GDK_LINE_ON_OFF_DASH;
1932 req_nb_dash = 2;
1933 req_dash = short_dashed;
1934 break;
1935 }
1936 case wxDOT_DASH:
1937 {
1938 // lineStyle = GDK_LINE_DOUBLE_DASH;
1939 lineStyle = GDK_LINE_ON_OFF_DASH;
1940 req_nb_dash = 4;
1941 req_dash = dotted_dashed;
1942 break;
1943 }
1944
1945 case wxTRANSPARENT:
1946 case wxSTIPPLE_MASK_OPAQUE:
1947 case wxSTIPPLE:
1948 case wxSOLID:
1949 default:
1950 {
1951 lineStyle = GDK_LINE_SOLID;
1952 req_dash = (wxGTKDash*)NULL;
1953 req_nb_dash = 0;
1954 break;
1955 }
1956 }
1957
1958 if (req_dash && req_nb_dash)
1959 {
1960 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1961 if (real_req_dash)
1962 {
1963 for (int i = 0; i < req_nb_dash; i++)
1964 real_req_dash[i] = req_dash[i] * width;
1965 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1966 delete[] real_req_dash;
1967 }
1968 else
1969 {
1970 // No Memory. We use non-scaled dash pattern...
1971 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1972 }
1973 }
1974
1975 GdkCapStyle capStyle = GDK_CAP_ROUND;
1976 switch (m_pen.GetCap())
1977 {
1978 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1979 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1980 case wxCAP_ROUND:
1981 default:
1982 {
1983 if (width <= 1)
1984 {
1985 width = 0;
1986 capStyle = GDK_CAP_NOT_LAST;
1987 }
1988 else
1989 {
1990 capStyle = GDK_CAP_ROUND;
1991 }
1992 break;
1993 }
1994 }
1995
1996 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1997 switch (m_pen.GetJoin())
1998 {
1999 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2000 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2001 case wxJOIN_ROUND:
2002 default: { joinStyle = GDK_JOIN_ROUND; break; }
2003 }
2004
2005 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2006
2007 m_pen.GetColour().CalcPixel( m_cmap );
2008 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2009 }
2010
2011 void wxWindowDC::SetBrush( const wxBrush &brush )
2012 {
2013 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2014
2015 if (m_brush == brush) return;
2016
2017 m_brush = brush;
2018
2019 if (!m_brush.Ok()) return;
2020
2021 if (!m_window) return;
2022
2023 m_brush.GetColour().CalcPixel( m_cmap );
2024 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2025
2026 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2027
2028 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2029 {
2030 if (m_brush.GetStipple()->GetDepth() != 1)
2031 {
2032 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2033 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2034 }
2035 else
2036 {
2037 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2038 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2039 }
2040 }
2041
2042 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2043 {
2044 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2045 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2046 }
2047
2048 if (m_brush.IsHatch())
2049 {
2050 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2051 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2052 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2053 }
2054 }
2055
2056 void wxWindowDC::SetBackground( const wxBrush &brush )
2057 {
2058 /* CMB 21/7/98: Added SetBackground. Sets background brush
2059 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2060
2061 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2062
2063 if (m_backgroundBrush == brush) return;
2064
2065 m_backgroundBrush = brush;
2066
2067 if (!m_backgroundBrush.Ok()) return;
2068
2069 if (!m_window) return;
2070
2071 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2072 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2073 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2074 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2075 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2076
2077 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2078
2079 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2080 {
2081 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2082 {
2083 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2084 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2085 }
2086 else
2087 {
2088 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2089 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2090 }
2091 }
2092
2093 if (m_backgroundBrush.IsHatch())
2094 {
2095 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2096 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2097 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2098 }
2099 }
2100
2101 void wxWindowDC::SetLogicalFunction( int function )
2102 {
2103 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2104
2105 if (m_logicalFunction == function)
2106 return;
2107
2108 // VZ: shouldn't this be a CHECK?
2109 if (!m_window)
2110 return;
2111
2112 GdkFunction mode;
2113 switch (function)
2114 {
2115 case wxXOR: mode = GDK_XOR; break;
2116 case wxINVERT: mode = GDK_INVERT; break;
2117 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2118 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2119 case wxCLEAR: mode = GDK_CLEAR; break;
2120 case wxSET: mode = GDK_SET; break;
2121 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2122 case wxAND: mode = GDK_AND; break;
2123 case wxOR: mode = GDK_OR; break;
2124 case wxEQUIV: mode = GDK_EQUIV; break;
2125 case wxNAND: mode = GDK_NAND; break;
2126 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2127 case wxCOPY: mode = GDK_COPY; break;
2128 case wxNO_OP: mode = GDK_NOOP; break;
2129 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2130
2131 // unsupported by GTK
2132 case wxNOR: mode = GDK_COPY; break;
2133 default:
2134 wxFAIL_MSG( wxT("unsupported logical function") );
2135 mode = GDK_COPY;
2136 }
2137
2138 m_logicalFunction = function;
2139
2140 gdk_gc_set_function( m_penGC, mode );
2141 gdk_gc_set_function( m_brushGC, mode );
2142
2143 // to stay compatible with wxMSW, we don't apply ROPs to the text
2144 // operations (i.e. DrawText/DrawRotatedText).
2145 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2146 gdk_gc_set_function( m_textGC, mode );
2147 }
2148
2149 void wxWindowDC::SetTextForeground( const wxColour &col )
2150 {
2151 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2152
2153 // don't set m_textForegroundColour to an invalid colour as we'd crash
2154 // later then (we use m_textForegroundColour.GetColor() without checking
2155 // in a few places)
2156 if ( !col.Ok() || (m_textForegroundColour == col) )
2157 return;
2158
2159 m_textForegroundColour = col;
2160
2161 if ( m_window )
2162 {
2163 m_textForegroundColour.CalcPixel( m_cmap );
2164 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2165 }
2166 }
2167
2168 void wxWindowDC::SetTextBackground( const wxColour &col )
2169 {
2170 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2171
2172 // same as above
2173 if ( !col.Ok() || (m_textBackgroundColour == col) )
2174 return;
2175
2176 m_textBackgroundColour = col;
2177
2178 if ( m_window )
2179 {
2180 m_textBackgroundColour.CalcPixel( m_cmap );
2181 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2182 }
2183 }
2184
2185 void wxWindowDC::SetBackgroundMode( int mode )
2186 {
2187 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2188
2189 m_backgroundMode = mode;
2190
2191 if (!m_window) return;
2192
2193 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2194 // transparent/solid background mode
2195
2196 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2197 {
2198 gdk_gc_set_fill( m_brushGC,
2199 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2200 }
2201 }
2202
2203 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2204 {
2205 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2206 }
2207
2208 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2209 {
2210 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2211
2212 if (!m_window) return;
2213
2214 wxRect rect;
2215 rect.x = XLOG2DEV(x);
2216 rect.y = YLOG2DEV(y);
2217 rect.width = XLOG2DEVREL(width);
2218 rect.height = YLOG2DEVREL(height);
2219
2220 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2221 {
2222 rect.x -= rect.width;
2223 }
2224
2225 if (!m_currentClippingRegion.IsNull())
2226 m_currentClippingRegion.Intersect( rect );
2227 else
2228 m_currentClippingRegion.Union( rect );
2229
2230 #if USE_PAINT_REGION
2231 if (!m_paintClippingRegion.IsNull())
2232 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2233 #endif
2234
2235 wxCoord xx, yy, ww, hh;
2236 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2237 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2238
2239 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2240 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2241 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2242 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2243 }
2244
2245 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2246 {
2247 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2248
2249 if (region.Empty())
2250 {
2251 DestroyClippingRegion();
2252 return;
2253 }
2254
2255 if (!m_window) return;
2256
2257 if (!m_currentClippingRegion.IsNull())
2258 m_currentClippingRegion.Intersect( region );
2259 else
2260 m_currentClippingRegion.Union( region );
2261
2262 #if USE_PAINT_REGION
2263 if (!m_paintClippingRegion.IsNull())
2264 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2265 #endif
2266
2267 wxCoord xx, yy, ww, hh;
2268 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2269 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2270
2271 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2272 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2273 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2274 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2275 }
2276
2277 void wxWindowDC::DestroyClippingRegion()
2278 {
2279 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2280
2281 wxDC::DestroyClippingRegion();
2282
2283 m_currentClippingRegion.Clear();
2284
2285 #if USE_PAINT_REGION
2286 if (!m_paintClippingRegion.IsEmpty())
2287 m_currentClippingRegion.Union( m_paintClippingRegion );
2288 #endif
2289
2290 if (!m_window) return;
2291
2292 if (m_currentClippingRegion.IsEmpty())
2293 {
2294 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2295 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2296 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2297 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2298 }
2299 else
2300 {
2301 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2302 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2303 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2304 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2305 }
2306 }
2307
2308 void wxWindowDC::Destroy()
2309 {
2310 if (m_penGC) wxFreePoolGC( m_penGC );
2311 m_penGC = (GdkGC*) NULL;
2312 if (m_brushGC) wxFreePoolGC( m_brushGC );
2313 m_brushGC = (GdkGC*) NULL;
2314 if (m_textGC) wxFreePoolGC( m_textGC );
2315 m_textGC = (GdkGC*) NULL;
2316 if (m_bgGC) wxFreePoolGC( m_bgGC );
2317 m_bgGC = (GdkGC*) NULL;
2318 }
2319
2320 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2321 {
2322 m_deviceOriginX = x;
2323 m_deviceOriginY = y;
2324
2325 ComputeScaleAndOrigin();
2326 }
2327
2328 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2329 {
2330 m_signX = (xLeftRight ? 1 : -1);
2331 m_signY = (yBottomUp ? -1 : 1);
2332
2333 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2334 m_signX = -m_signX;
2335
2336 ComputeScaleAndOrigin();
2337 }
2338
2339 void wxWindowDC::ComputeScaleAndOrigin()
2340 {
2341 const wxRealPoint origScale(m_scaleX, m_scaleY);
2342
2343 wxDC::ComputeScaleAndOrigin();
2344
2345 // if scale has changed call SetPen to recalulate the line width
2346 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2347 {
2348 // this is a bit artificial, but we need to force wxDC to think the pen
2349 // has changed
2350 wxPen pen = m_pen;
2351 m_pen = wxNullPen;
2352 SetPen( pen );
2353 }
2354 }
2355
2356 // Resolution in pixels per logical inch
2357 wxSize wxWindowDC::GetPPI() const
2358 {
2359 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2360 }
2361
2362 int wxWindowDC::GetDepth() const
2363 {
2364 return gdk_drawable_get_depth(m_window);
2365 }
2366
2367
2368 //-----------------------------------------------------------------------------
2369 // wxPaintDC
2370 //-----------------------------------------------------------------------------
2371
2372 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2373
2374 // Limit the paint region to the window size. Sometimes
2375 // the paint region is too big, and this risks X11 errors
2376 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2377 {
2378 wxRect originalRect = region.GetBox();
2379 wxRect rect(originalRect);
2380 if (rect.width + rect.x > sz.x)
2381 rect.width = sz.x - rect.x;
2382 if (rect.height + rect.y > sz.y)
2383 rect.height = sz.y - rect.y;
2384 if (rect != originalRect)
2385 {
2386 region = wxRegion(rect);
2387 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2388 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2389 rect.x, rect.y, rect.width, rect.height);
2390 }
2391 }
2392
2393 wxPaintDC::wxPaintDC( wxWindow *win )
2394 : wxClientDC( win )
2395 {
2396 #if USE_PAINT_REGION
2397 if (!win->m_clipPaintRegion)
2398 return;
2399
2400 wxSize sz = win->GetSize();
2401 m_paintClippingRegion = win->m_nativeUpdateRegion;
2402 wxLimitRegionToSize(m_paintClippingRegion, sz);
2403
2404 GdkRegion *region = m_paintClippingRegion.GetRegion();
2405 if ( region )
2406 {
2407 m_currentClippingRegion.Union( m_paintClippingRegion );
2408 wxLimitRegionToSize(m_currentClippingRegion, sz);
2409
2410 if (sz.x <= 0 || sz.y <= 0)
2411 return ;
2412
2413 gdk_gc_set_clip_region( m_penGC, region );
2414 gdk_gc_set_clip_region( m_brushGC, region );
2415 gdk_gc_set_clip_region( m_textGC, region );
2416 gdk_gc_set_clip_region( m_bgGC, region );
2417 }
2418 #endif // USE_PAINT_REGION
2419 }
2420
2421 //-----------------------------------------------------------------------------
2422 // wxClientDC
2423 //-----------------------------------------------------------------------------
2424
2425 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2426
2427 wxClientDC::wxClientDC( wxWindow *win )
2428 : wxWindowDC( win )
2429 {
2430 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2431
2432 #ifdef __WXUNIVERSAL__
2433 wxPoint ptOrigin = win->GetClientAreaOrigin();
2434 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2435 wxSize size = win->GetClientSize();
2436 SetClippingRegion(wxPoint(0, 0), size);
2437 #endif // __WXUNIVERSAL__
2438 }
2439
2440 void wxClientDC::DoGetSize(int *width, int *height) const
2441 {
2442 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2443
2444 m_owner->GetClientSize( width, height );
2445 }
2446
2447 // ----------------------------------------------------------------------------
2448 // wxDCModule
2449 // ----------------------------------------------------------------------------
2450
2451 class wxDCModule : public wxModule
2452 {
2453 public:
2454 bool OnInit();
2455 void OnExit();
2456
2457 private:
2458 DECLARE_DYNAMIC_CLASS(wxDCModule)
2459 };
2460
2461 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2462
2463 bool wxDCModule::OnInit()
2464 {
2465 wxInitGCPool();
2466 return true;
2467 }
2468
2469 void wxDCModule::OnExit()
2470 {
2471 wxCleanUpGCPool();
2472 }
wxWidgets (Impactor)