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added alpha channel support to wxGTK2's wxBitmap
[wxWidgets.git] / src / gtk1 / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
11 #pragma implementation "dcclient.h"
12 #endif
13
14 // For compilers that support precompilation, includes "wx.h".
15 #include "wx/wxprec.h"
16
17 #ifdef __VMS
18 #define XCopyPlane XCOPYPLANE
19 #endif
20
21 #include "wx/dcclient.h"
22 #include "wx/dcmemory.h"
23 #include "wx/image.h"
24 #include "wx/module.h"
25 #include "wx/log.h"
26 #include "wx/fontutil.h"
27
28 #include "wx/gtk/win_gtk.h"
29
30 #include <math.h> // for floating-point functions
31
32 #include <gdk/gdk.h>
33 #include <gdk/gdkx.h>
34 #include <gdk/gdkprivate.h>
35 #include <gtk/gtk.h>
36
37 //-----------------------------------------------------------------------------
38 // local defines
39 //-----------------------------------------------------------------------------
40
41 #define USE_PAINT_REGION 1
42
43 //-----------------------------------------------------------------------------
44 // local data
45 //-----------------------------------------------------------------------------
46
47 #include "bdiag.xbm"
48 #include "fdiag.xbm"
49 #include "cdiag.xbm"
50 #include "horiz.xbm"
51 #include "verti.xbm"
52 #include "cross.xbm"
53 #define num_hatches 6
54
55 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
56 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
57
58
59 static GdkPixmap *hatches[num_hatches];
60 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
61
62 extern GtkWidget *wxGetRootWindow();
63
64 //-----------------------------------------------------------------------------
65 // constants
66 //-----------------------------------------------------------------------------
67
68 const double RAD2DEG = 180.0 / M_PI;
69
70 // ----------------------------------------------------------------------------
71 // private functions
72 // ----------------------------------------------------------------------------
73
74 static inline double dmax(double a, double b) { return a > b ? a : b; }
75 static inline double dmin(double a, double b) { return a < b ? a : b; }
76
77 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
78
79 //-----------------------------------------------------------------------------
80 // temporary implementation of the missing GDK function
81 //-----------------------------------------------------------------------------
82
83 #include "gdk/gdkprivate.h"
84
85 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94 {
95 g_return_if_fail (drawable != NULL);
96 g_return_if_fail (src != NULL);
97 g_return_if_fail (gc != NULL);
98
99 #ifdef __WXGTK20__
100 gint src_width, src_height;
101 gdk_drawable_get_size(src, &src_width, &src_height);
102 if (width == -1) width = src_width;
103 if (height == -1) height = src_height;
104
105 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
106 GDK_WINDOW_XID(src),
107 GDK_WINDOW_XID(drawable),
108 GDK_GC_XGC(gc),
109 xsrc, ysrc,
110 width, height,
111 0, 0,
112 1 );
113 #else
114 GdkWindowPrivate *drawable_private;
115 GdkWindowPrivate *src_private;
116 GdkGCPrivate *gc_private;
117
118 drawable_private = (GdkWindowPrivate*) drawable;
119 src_private = (GdkWindowPrivate*) src;
120 if (drawable_private->destroyed || src_private->destroyed)
121 return;
122
123 gint src_width = src_private->width;
124 gint src_height = src_private->height;
125
126 gc_private = (GdkGCPrivate*) gc;
127
128 if (width == -1) width = src_width;
129 if (height == -1) height = src_height;
130
131 XCopyPlane( drawable_private->xdisplay,
132 src_private->xwindow,
133 drawable_private->xwindow,
134 gc_private->xgc,
135 xsrc, ysrc,
136 width, height,
137 xdest, ydest,
138 1 );
139 #endif
140 }
141
142 //-----------------------------------------------------------------------------
143 // Implement Pool of Graphic contexts. Creating them takes too much time.
144 //-----------------------------------------------------------------------------
145
146 #define GC_POOL_SIZE 200
147
148 enum wxPoolGCType
149 {
150 wxGC_ERROR = 0,
151 wxTEXT_MONO,
152 wxBG_MONO,
153 wxPEN_MONO,
154 wxBRUSH_MONO,
155 wxTEXT_COLOUR,
156 wxBG_COLOUR,
157 wxPEN_COLOUR,
158 wxBRUSH_COLOUR,
159 wxTEXT_SCREEN,
160 wxBG_SCREEN,
161 wxPEN_SCREEN,
162 wxBRUSH_SCREEN
163 };
164
165 struct wxGC
166 {
167 GdkGC *m_gc;
168 wxPoolGCType m_type;
169 bool m_used;
170 };
171
172 #define GC_POOL_ALLOC_SIZE 100
173
174 static int wxGCPoolSize = 0;
175
176 static wxGC *wxGCPool = NULL;
177
178 static void wxInitGCPool()
179 {
180 // This really could wait until the first call to
181 // wxGetPoolGC, but we will make the first allocation
182 // now when other initialization is being performed.
183
184 // Set initial pool size.
185 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
186
187 // Allocate initial pool.
188 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
189 if (wxGCPool == NULL)
190 {
191 // If we cannot malloc, then fail with error
192 // when debug is enabled. If debug is not enabled,
193 // the problem will eventually get caught
194 // in wxGetPoolGC.
195 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
196 return;
197 }
198
199 // Zero initial pool.
200 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
201 }
202
203 static void wxCleanUpGCPool()
204 {
205 for (int i = 0; i < wxGCPoolSize; i++)
206 {
207 if (wxGCPool[i].m_gc)
208 gdk_gc_unref( wxGCPool[i].m_gc );
209 }
210
211 free(wxGCPool);
212 wxGCPool = NULL;
213 wxGCPoolSize = 0;
214 }
215
216 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
217 {
218 wxGC *pptr;
219
220 // Look for an available GC.
221 for (int i = 0; i < wxGCPoolSize; i++)
222 {
223 if (!wxGCPool[i].m_gc)
224 {
225 wxGCPool[i].m_gc = gdk_gc_new( window );
226 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
227 wxGCPool[i].m_type = type;
228 wxGCPool[i].m_used = FALSE;
229 }
230 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
231 {
232 wxGCPool[i].m_used = TRUE;
233 return wxGCPool[i].m_gc;
234 }
235 }
236
237 // We did not find an available GC.
238 // We need to grow the GC pool.
239 pptr = (wxGC *)realloc(wxGCPool,
240 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
241 if (pptr != NULL)
242 {
243 // Initialize newly allocated pool.
244 wxGCPool = pptr;
245 memset(&wxGCPool[wxGCPoolSize], 0,
246 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
247
248 // Initialize entry we will return.
249 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
250 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
251 wxGCPool[wxGCPoolSize].m_type = type;
252 wxGCPool[wxGCPoolSize].m_used = TRUE;
253
254 // Set new value of pool size.
255 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
256
257 // Return newly allocated entry.
258 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
259 }
260
261 // The realloc failed. Fall through to error.
262 wxFAIL_MSG( wxT("No GC available") );
263
264 return (GdkGC*) NULL;
265 }
266
267 static void wxFreePoolGC( GdkGC *gc )
268 {
269 for (int i = 0; i < wxGCPoolSize; i++)
270 {
271 if (wxGCPool[i].m_gc == gc)
272 {
273 wxGCPool[i].m_used = FALSE;
274 return;
275 }
276 }
277
278 wxFAIL_MSG( wxT("Wrong GC") );
279 }
280
281 //-----------------------------------------------------------------------------
282 // wxWindowDC
283 //-----------------------------------------------------------------------------
284
285 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
286
287 wxWindowDC::wxWindowDC()
288 {
289 m_penGC = (GdkGC *) NULL;
290 m_brushGC = (GdkGC *) NULL;
291 m_textGC = (GdkGC *) NULL;
292 m_bgGC = (GdkGC *) NULL;
293 m_cmap = (GdkColormap *) NULL;
294 m_isMemDC = FALSE;
295 m_isScreenDC = FALSE;
296 m_owner = (wxWindow *)NULL;
297 #ifdef __WXGTK20__
298 m_context = (PangoContext *)NULL;
299 m_layout = (PangoLayout *)NULL;
300 m_fontdesc = (PangoFontDescription *)NULL;
301 #endif
302 }
303
304 wxWindowDC::wxWindowDC( wxWindow *window )
305 {
306 wxASSERT_MSG( window, wxT("DC needs a window") );
307
308 m_penGC = (GdkGC *) NULL;
309 m_brushGC = (GdkGC *) NULL;
310 m_textGC = (GdkGC *) NULL;
311 m_bgGC = (GdkGC *) NULL;
312 m_cmap = (GdkColormap *) NULL;
313 m_owner = (wxWindow *)NULL;
314 m_isMemDC = FALSE;
315 m_isScreenDC = FALSE;
316 m_font = window->GetFont();
317
318 GtkWidget *widget = window->m_wxwindow;
319
320 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
321 // code should still be able to create wxClientDCs for them, so we will
322 // use the parent window here then.
323 if ( !widget )
324 {
325 window = window->GetParent();
326 widget = window->m_wxwindow;
327 }
328
329 wxASSERT_MSG( widget, wxT("DC needs a widget") );
330
331 #ifdef __WXGTK20__
332 m_context = window->GtkGetPangoDefaultContext();
333 m_layout = pango_layout_new( m_context );
334 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
335 #endif
336
337 GtkPizza *pizza = GTK_PIZZA( widget );
338 m_window = pizza->bin_window;
339
340 // Window not realized ?
341 if (!m_window)
342 {
343 // Don't report problems as per MSW.
344 m_ok = TRUE;
345
346 return;
347 }
348
349 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
350
351 SetUpDC();
352
353 /* this must be done after SetUpDC, bacause SetUpDC calls the
354 repective SetBrush, SetPen, SetBackground etc functions
355 to set up the DC. SetBackground call m_owner->SetBackground
356 and this might not be desired as the standard dc background
357 is white whereas a window might assume gray to be the
358 standard (as e.g. wxStatusBar) */
359
360 m_owner = window;
361 }
362
363 wxWindowDC::~wxWindowDC()
364 {
365 Destroy();
366
367 #ifdef __WXGTK20__
368 if (m_layout)
369 g_object_unref( G_OBJECT( m_layout ) );
370 if (m_fontdesc)
371 pango_font_description_free( m_fontdesc );
372 #endif
373 }
374
375 void wxWindowDC::SetUpDC()
376 {
377 m_ok = TRUE;
378
379 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
380
381 if (m_isScreenDC)
382 {
383 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
384 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
385 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
386 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
387 }
388 else
389 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
390 {
391 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
392 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
393 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
394 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
395 }
396 else
397 {
398 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
399 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
400 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
401 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
402 }
403
404 /* background colour */
405 m_backgroundBrush = *wxWHITE_BRUSH;
406 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
407 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
408
409 /* m_textGC */
410 m_textForegroundColour.CalcPixel( m_cmap );
411 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
412
413 m_textBackgroundColour.CalcPixel( m_cmap );
414 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
415
416 gdk_gc_set_fill( m_textGC, GDK_SOLID );
417
418 /* m_penGC */
419 m_pen.GetColour().CalcPixel( m_cmap );
420 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
421 gdk_gc_set_background( m_penGC, bg_col );
422
423 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
424
425 /* m_brushGC */
426 m_brush.GetColour().CalcPixel( m_cmap );
427 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
428 gdk_gc_set_background( m_brushGC, bg_col );
429
430 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
431
432 /* m_bgGC */
433 gdk_gc_set_background( m_bgGC, bg_col );
434 gdk_gc_set_foreground( m_bgGC, bg_col );
435
436 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
437
438 /* ROPs */
439 gdk_gc_set_function( m_textGC, GDK_COPY );
440 gdk_gc_set_function( m_brushGC, GDK_COPY );
441 gdk_gc_set_function( m_penGC, GDK_COPY );
442
443 /* clipping */
444 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
445 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
446 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
447 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
448
449 if (!hatch_bitmap)
450 {
451 hatch_bitmap = hatches;
452 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
453 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
454 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
455 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
456 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
457 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
458 }
459 }
460
461 void wxWindowDC::DoGetSize( int* width, int* height ) const
462 {
463 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
464
465 m_owner->GetSize(width, height);
466 }
467
468 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
469 const wxColour & col, int style);
470
471 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
472 const wxColour& col, int style)
473 {
474 return wxDoFloodFill(this, x, y, col, style);
475 }
476
477 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
478 {
479 // Generic (and therefore rather inefficient) method.
480 // Could be improved.
481 wxMemoryDC memdc;
482 wxBitmap bitmap(1, 1);
483 memdc.SelectObject(bitmap);
484 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
485 memdc.SelectObject(wxNullBitmap);
486
487 wxImage image = bitmap.ConvertToImage();
488 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
489 return TRUE;
490 }
491
492 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
493 {
494 wxCHECK_RET( Ok(), wxT("invalid window dc") );
495
496 if (m_pen.GetStyle() != wxTRANSPARENT)
497 {
498 if (m_window)
499 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
500
501 CalcBoundingBox(x1, y1);
502 CalcBoundingBox(x2, y2);
503 }
504 }
505
506 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
507 {
508 wxCHECK_RET( Ok(), wxT("invalid window dc") );
509
510 if (m_pen.GetStyle() != wxTRANSPARENT)
511 {
512 int w = 0;
513 int h = 0;
514 GetSize( &w, &h );
515 wxCoord xx = XLOG2DEV(x);
516 wxCoord yy = YLOG2DEV(y);
517 if (m_window)
518 {
519 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
520 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
521 }
522 }
523 }
524
525 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
526 wxCoord xc, wxCoord yc )
527 {
528 wxCHECK_RET( Ok(), wxT("invalid window dc") );
529
530 wxCoord xx1 = XLOG2DEV(x1);
531 wxCoord yy1 = YLOG2DEV(y1);
532 wxCoord xx2 = XLOG2DEV(x2);
533 wxCoord yy2 = YLOG2DEV(y2);
534 wxCoord xxc = XLOG2DEV(xc);
535 wxCoord yyc = YLOG2DEV(yc);
536 double dx = xx1 - xxc;
537 double dy = yy1 - yyc;
538 double radius = sqrt((double)(dx*dx+dy*dy));
539 wxCoord r = (wxCoord)radius;
540 double radius1, radius2;
541
542 if (xx1 == xx2 && yy1 == yy2)
543 {
544 radius1 = 0.0;
545 radius2 = 360.0;
546 }
547 else
548 if (radius == 0.0)
549 {
550 radius1 = radius2 = 0.0;
551 }
552 else
553 {
554 radius1 = (xx1 - xxc == 0) ?
555 (yy1 - yyc < 0) ? 90.0 : -90.0 :
556 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
557 radius2 = (xx2 - xxc == 0) ?
558 (yy2 - yyc < 0) ? 90.0 : -90.0 :
559 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
560 }
561 wxCoord alpha1 = wxCoord(radius1 * 64.0);
562 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
563 while (alpha2 <= 0) alpha2 += 360*64;
564 while (alpha1 > 360*64) alpha1 -= 360*64;
565
566 if (m_window)
567 {
568 if (m_brush.GetStyle() != wxTRANSPARENT)
569 {
570 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
571 {
572 gdk_gc_set_ts_origin( m_textGC,
573 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
574 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
575 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
576 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
577 } else
578 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
579 {
580 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
581 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
582 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
583 } else
584 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
585 {
586 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
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 (m_brush.GetStyle() == wxSTIPPLE)
591 {
592 gdk_gc_set_ts_origin( m_brushGC,
593 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
594 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
595 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
596 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
597 }
598 else
599 {
600 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
601 }
602 }
603
604 if (m_pen.GetStyle() != wxTRANSPARENT)
605 {
606 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
607
608 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
609 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
610 }
611 }
612
613 CalcBoundingBox (x1, y1);
614 CalcBoundingBox (x2, y2);
615 }
616
617 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
618 {
619 wxCHECK_RET( Ok(), wxT("invalid window dc") );
620
621 wxCoord xx = XLOG2DEV(x);
622 wxCoord yy = YLOG2DEV(y);
623 wxCoord ww = m_signX * XLOG2DEVREL(width);
624 wxCoord hh = m_signY * YLOG2DEVREL(height);
625
626 // CMB: handle -ve width and/or height
627 if (ww < 0) { ww = -ww; xx = xx - ww; }
628 if (hh < 0) { hh = -hh; yy = yy - hh; }
629
630 if (m_window)
631 {
632 wxCoord start = wxCoord(sa * 64.0);
633 wxCoord end = wxCoord((ea-sa) * 64.0);
634
635 if (m_brush.GetStyle() != wxTRANSPARENT)
636 {
637 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
638 {
639 gdk_gc_set_ts_origin( m_textGC,
640 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
641 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
642 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
643 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
644 } else
645 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
646 {
647 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
648 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
649 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
650 } else
651 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
652 {
653 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
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 (m_brush.GetStyle() == wxSTIPPLE)
658 {
659 gdk_gc_set_ts_origin( m_brushGC,
660 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
661 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
662 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
663 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
664 }
665 else
666 {
667 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
668 }
669 }
670
671 if (m_pen.GetStyle() != wxTRANSPARENT)
672 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
673 }
674
675 CalcBoundingBox (x, y);
676 CalcBoundingBox (x + width, y + height);
677 }
678
679 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
680 {
681 wxCHECK_RET( Ok(), wxT("invalid window dc") );
682
683 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
684 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
685
686 CalcBoundingBox (x, y);
687 }
688
689 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
690 {
691 wxCHECK_RET( Ok(), wxT("invalid window dc") );
692
693 if (m_pen.GetStyle() == wxTRANSPARENT) return;
694 if (n <= 0) return;
695
696 GdkPoint *gpts = new GdkPoint[n];
697 if (! gpts)
698 {
699 wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
700 return;
701 }
702
703 for (int i = 0; i < n; i++)
704 {
705 wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
706 wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
707
708 CalcBoundingBox( x1 + xoffset, y1 + yoffset );
709
710 gpts[i].x = x1;
711 gpts[i].y = y1;
712 }
713
714 if (m_window)
715 gdk_draw_lines( m_window, m_penGC, gpts, n);
716
717 delete[] gpts;
718 }
719
720 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
721 {
722 wxCHECK_RET( Ok(), wxT("invalid window dc") );
723
724 if (n <= 0) return;
725
726 GdkPoint *gdkpoints = new GdkPoint[n+1];
727 int i;
728 for (i = 0 ; i < n ; i++)
729 {
730 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
731 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
732
733 CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset );
734 }
735
736 if (m_window)
737 {
738 if (m_brush.GetStyle() != wxTRANSPARENT)
739 {
740 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
741 {
742 gdk_gc_set_ts_origin( m_textGC,
743 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
744 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
745 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
746 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
747 } else
748 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
749 {
750 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
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 (IS_16_PIX_HATCH(m_brush.GetStyle()))
755 {
756 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
757 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
758 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
759 } else
760 if (m_brush.GetStyle() == wxSTIPPLE)
761 {
762 gdk_gc_set_ts_origin( m_brushGC,
763 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
764 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
765 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
766 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
767 }
768 else
769 {
770 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
771 }
772 }
773
774 if (m_pen.GetStyle() != wxTRANSPARENT)
775 {
776 /*
777 for (i = 0 ; i < n ; i++)
778 {
779 gdk_draw_line( m_window, m_penGC,
780 gdkpoints[i%n].x,
781 gdkpoints[i%n].y,
782 gdkpoints[(i+1)%n].x,
783 gdkpoints[(i+1)%n].y);
784 }
785 */
786 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
787
788 }
789 }
790
791 delete[] gdkpoints;
792 }
793
794 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
795 {
796 wxCHECK_RET( Ok(), wxT("invalid window dc") );
797
798 wxCoord xx = XLOG2DEV(x);
799 wxCoord yy = YLOG2DEV(y);
800 wxCoord ww = m_signX * XLOG2DEVREL(width);
801 wxCoord hh = m_signY * YLOG2DEVREL(height);
802
803 // CMB: draw nothing if transformed w or h is 0
804 if (ww == 0 || hh == 0) return;
805
806 // CMB: handle -ve width and/or height
807 if (ww < 0) { ww = -ww; xx = xx - ww; }
808 if (hh < 0) { hh = -hh; yy = yy - hh; }
809
810 if (m_window)
811 {
812 if (m_brush.GetStyle() != wxTRANSPARENT)
813 {
814 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
815 {
816 gdk_gc_set_ts_origin( m_textGC,
817 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
818 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
819 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
820 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
821 } else
822 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
823 {
824 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
825 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
826 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
827 } else
828 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
829 {
830 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
831 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
832 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
833 } else
834 if (m_brush.GetStyle() == wxSTIPPLE)
835 {
836 gdk_gc_set_ts_origin( m_brushGC,
837 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
838 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
839 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
840 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
841 }
842 else
843 {
844 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
845 }
846 }
847
848 if (m_pen.GetStyle() != wxTRANSPARENT)
849 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
850 }
851
852 CalcBoundingBox( x, y );
853 CalcBoundingBox( x + width, y + height );
854 }
855
856 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
857 {
858 wxCHECK_RET( Ok(), wxT("invalid window dc") );
859
860 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
861
862 wxCoord xx = XLOG2DEV(x);
863 wxCoord yy = YLOG2DEV(y);
864 wxCoord ww = m_signX * XLOG2DEVREL(width);
865 wxCoord hh = m_signY * YLOG2DEVREL(height);
866 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
867
868 // CMB: handle -ve width and/or height
869 if (ww < 0) { ww = -ww; xx = xx - ww; }
870 if (hh < 0) { hh = -hh; yy = yy - hh; }
871
872 // CMB: if radius is zero use DrawRectangle() instead to avoid
873 // X drawing errors with small radii
874 if (rr == 0)
875 {
876 DrawRectangle( x, y, width, height );
877 return;
878 }
879
880 // CMB: draw nothing if transformed w or h is 0
881 if (ww == 0 || hh == 0) return;
882
883 // CMB: adjust size if outline is drawn otherwise the result is
884 // 1 pixel too wide and high
885 if (m_pen.GetStyle() != wxTRANSPARENT)
886 {
887 ww--;
888 hh--;
889 }
890
891 if (m_window)
892 {
893 // CMB: ensure dd is not larger than rectangle otherwise we
894 // get an hour glass shape
895 wxCoord dd = 2 * rr;
896 if (dd > ww) dd = ww;
897 if (dd > hh) dd = hh;
898 rr = dd / 2;
899
900 if (m_brush.GetStyle() != wxTRANSPARENT)
901 {
902 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
903 {
904 gdk_gc_set_ts_origin( m_textGC,
905 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
906 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
907 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
908 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
909 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
910 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
911 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
912 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
913 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
914 } else
915 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
916 {
917 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
918 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
919 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
920 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
921 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
922 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
923 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
924 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
925 } else
926 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
927 {
928 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
929 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
930 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
931 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
932 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
933 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
934 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
935 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
936 } else
937 if (m_brush.GetStyle() == wxSTIPPLE)
938 {
939 gdk_gc_set_ts_origin( m_brushGC,
940 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
941 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
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 }
950 else
951 {
952 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
953 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
954 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
958 }
959 }
960
961 if (m_pen.GetStyle() != wxTRANSPARENT)
962 {
963 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
964 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
965 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
966 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
967 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
968 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
969 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
970 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
971 }
972 }
973
974 // this ignores the radius
975 CalcBoundingBox( x, y );
976 CalcBoundingBox( x + width, y + height );
977 }
978
979 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
980 {
981 wxCHECK_RET( Ok(), wxT("invalid window dc") );
982
983 wxCoord xx = XLOG2DEV(x);
984 wxCoord yy = YLOG2DEV(y);
985 wxCoord ww = m_signX * XLOG2DEVREL(width);
986 wxCoord hh = m_signY * YLOG2DEVREL(height);
987
988 // CMB: handle -ve width and/or height
989 if (ww < 0) { ww = -ww; xx = xx - ww; }
990 if (hh < 0) { hh = -hh; yy = yy - hh; }
991
992 if (m_window)
993 {
994 if (m_brush.GetStyle() != wxTRANSPARENT)
995 {
996 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
997 {
998 gdk_gc_set_ts_origin( m_textGC,
999 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1000 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1001 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1002 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1003 } else
1004 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1005 {
1006 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1007 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1008 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1009 } else
1010 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1011 {
1012 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1013 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1014 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1015 } else
1016 if (m_brush.GetStyle() == wxSTIPPLE)
1017 {
1018 gdk_gc_set_ts_origin( m_brushGC,
1019 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1020 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1021 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1022 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1023 }
1024 else
1025 {
1026 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1027 }
1028 }
1029
1030 if (m_pen.GetStyle() != wxTRANSPARENT)
1031 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1032 }
1033
1034 CalcBoundingBox( x, y );
1035 CalcBoundingBox( x + width, y + height );
1036 }
1037
1038 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1039 {
1040 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1041 DoDrawBitmap( (const wxBitmap&)icon, x, y, (bool)TRUE );
1042 }
1043
1044 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1045 wxCoord x, wxCoord y,
1046 bool useMask )
1047 {
1048 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1049
1050 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1051
1052 bool is_mono = (bitmap.GetBitmap() != NULL);
1053
1054 // scale/translate size and position
1055 int xx = XLOG2DEV(x);
1056 int yy = YLOG2DEV(y);
1057
1058 int w = bitmap.GetWidth();
1059 int h = bitmap.GetHeight();
1060
1061 CalcBoundingBox( x, y );
1062 CalcBoundingBox( x + w, y + h );
1063
1064 if (!m_window) return;
1065
1066 int ww = XLOG2DEVREL(w);
1067 int hh = YLOG2DEVREL(h);
1068
1069 // compare to current clipping region
1070 if (!m_currentClippingRegion.IsNull())
1071 {
1072 wxRegion tmp( xx,yy,ww,hh );
1073 tmp.Intersect( m_currentClippingRegion );
1074 if (tmp.IsEmpty())
1075 return;
1076 }
1077
1078 // scale bitmap if required
1079 wxBitmap use_bitmap = bitmap;
1080 if ((w != ww) || (h != hh))
1081 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1082
1083 // apply mask if any
1084 GdkBitmap *mask = (GdkBitmap *) NULL;
1085 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1086
1087 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1088
1089 if (useMask && mask)
1090 {
1091 if (!m_currentClippingRegion.IsNull())
1092 {
1093 GdkColor col;
1094 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1095 GdkGC *gc = gdk_gc_new( new_mask );
1096 col.pixel = 0;
1097 gdk_gc_set_foreground( gc, &col );
1098 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1099 col.pixel = 0;
1100 gdk_gc_set_background( gc, &col );
1101 col.pixel = 1;
1102 gdk_gc_set_foreground( gc, &col );
1103 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1104 gdk_gc_set_clip_origin( gc, -xx, -yy );
1105 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1106 gdk_gc_set_stipple( gc, mask );
1107 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1108 gdk_gc_unref( gc );
1109 }
1110
1111 if (is_mono)
1112 {
1113 if (new_mask)
1114 gdk_gc_set_clip_mask( m_textGC, new_mask );
1115 else
1116 gdk_gc_set_clip_mask( m_textGC, mask );
1117 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1118 }
1119 else
1120 {
1121 if (new_mask)
1122 gdk_gc_set_clip_mask( m_penGC, new_mask );
1123 else
1124 gdk_gc_set_clip_mask( m_penGC, mask );
1125 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1126 }
1127 }
1128
1129 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1130 // drawing a mono-bitmap (XBitmap) we use the current text GC
1131 if (is_mono)
1132 {
1133 #ifdef __WXGTK20__
1134 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1135 GdkGC *gc = gdk_gc_new( bitmap );
1136 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1137 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1138 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1139
1140 gdk_draw_drawable( m_window, m_textGC, bitmap, 0, 0, xx, yy, -1, -1 );
1141
1142 gdk_bitmap_unref( bitmap );
1143 gdk_gc_unref( gc );
1144 #else
1145 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );
1146 #endif
1147 }
1148 else
1149 {
1150 #if GTK_CHECK_VERSION(2,2,0)
1151 if (use_bitmap.HasPixbuf())
1152 {
1153 gdk_draw_pixbuf(m_window, m_penGC,
1154 use_bitmap.GetPixbuf(),
1155 0, 0, xx, yy, -1, -1,
1156 GDK_RGB_DITHER_NORMAL, xx, yy);
1157 }
1158 else
1159 #endif
1160 {
1161 gdk_draw_pixmap(m_window, m_penGC,
1162 use_bitmap.GetPixmap(),
1163 0, 0, xx, yy, -1, -1);
1164 }
1165 }
1166
1167 // remove mask again if any
1168 if (useMask && mask)
1169 {
1170 if (is_mono)
1171 {
1172 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1173 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1174 if (!m_currentClippingRegion.IsNull())
1175 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1176 }
1177 else
1178 {
1179 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1180 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1181 if (!m_currentClippingRegion.IsNull())
1182 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1183 }
1184 }
1185
1186 if (new_mask)
1187 gdk_bitmap_unref( new_mask );
1188 }
1189
1190 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1191 wxCoord width, wxCoord height,
1192 wxDC *source,
1193 wxCoord xsrc, wxCoord ysrc,
1194 int logical_func,
1195 bool useMask,
1196 wxCoord xsrcMask, wxCoord ysrcMask )
1197 {
1198 wxCHECK_MSG( Ok(), FALSE, wxT("invalid window dc") );
1199
1200 wxCHECK_MSG( source, FALSE, wxT("invalid source dc") );
1201
1202 if (!m_window) return FALSE;
1203
1204 // transform the source DC coords to the device ones
1205 xsrc = source->XLOG2DEV(xsrc);
1206 ysrc = source->YLOG2DEV(ysrc);
1207
1208 wxClientDC *srcDC = (wxClientDC*)source;
1209 wxMemoryDC *memDC = (wxMemoryDC*)source;
1210
1211 bool use_bitmap_method = FALSE;
1212 bool is_mono = FALSE;
1213
1214 // TODO: use the mask origin when drawing transparently
1215 if (xsrcMask == -1 && ysrcMask == -1)
1216 {
1217 xsrcMask = xsrc;
1218 ysrcMask = ysrc;
1219 }
1220
1221 if (srcDC->m_isMemDC)
1222 {
1223 if (!memDC->m_selected.Ok()) return FALSE;
1224
1225 is_mono = (memDC->m_selected.GetDepth() == 1);
1226
1227 // we use the "XCopyArea" way to copy a memory dc into
1228 // a different window if the memory dc BOTH
1229 // a) doesn't have any mask or its mask isn't used
1230 // b) it is clipped
1231 // c) is not 1-bit
1232
1233 if (useMask && (memDC->m_selected.GetMask()))
1234 {
1235 // we HAVE TO use the direct way for memory dcs
1236 // that have mask since the XCopyArea doesn't know
1237 // about masks
1238 use_bitmap_method = TRUE;
1239 }
1240 else if (is_mono)
1241 {
1242 // we HAVE TO use the direct way for memory dcs
1243 // that are bitmaps because XCopyArea doesn't cope
1244 // with different bit depths
1245 use_bitmap_method = TRUE;
1246 }
1247 else if ((xsrc == 0) && (ysrc == 0) &&
1248 (width == memDC->m_selected.GetWidth()) &&
1249 (height == memDC->m_selected.GetHeight()))
1250 {
1251 // we SHOULD use the direct way if all of the bitmap
1252 // in the memory dc is copied in which case XCopyArea
1253 // wouldn't be able able to boost performace by reducing
1254 // the area to be scaled
1255 use_bitmap_method = TRUE;
1256 }
1257 else
1258 {
1259 use_bitmap_method = FALSE;
1260 }
1261 }
1262
1263 CalcBoundingBox( xdest, ydest );
1264 CalcBoundingBox( xdest + width, ydest + height );
1265
1266 // scale/translate size and position
1267 wxCoord xx = XLOG2DEV(xdest);
1268 wxCoord yy = YLOG2DEV(ydest);
1269
1270 wxCoord ww = XLOG2DEVREL(width);
1271 wxCoord hh = YLOG2DEVREL(height);
1272
1273 // compare to current clipping region
1274 if (!m_currentClippingRegion.IsNull())
1275 {
1276 wxRegion tmp( xx,yy,ww,hh );
1277 tmp.Intersect( m_currentClippingRegion );
1278 if (tmp.IsEmpty())
1279 return TRUE;
1280 }
1281
1282 int old_logical_func = m_logicalFunction;
1283 SetLogicalFunction( logical_func );
1284
1285 if (use_bitmap_method)
1286 {
1287 // scale/translate bitmap size
1288 wxCoord bm_width = memDC->m_selected.GetWidth();
1289 wxCoord bm_height = memDC->m_selected.GetHeight();
1290
1291 // Get clip coords for the bitmap. If we don't
1292 // use wxBitmap::Rescale(), which can clip the
1293 // bitmap, these are the same as the original
1294 // coordinates
1295 wxCoord cx = xx;
1296 wxCoord cy = yy;
1297 wxCoord cw = ww;
1298 wxCoord ch = hh;
1299
1300 // interpret userscale of src too
1301 double xsc,ysc;
1302 memDC->GetUserScale(&xsc,&ysc);
1303 bm_width = (int) (bm_width / xsc);
1304 bm_height = (int) (bm_height / ysc);
1305
1306 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1307 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1308
1309 // Scale bitmap if required
1310 wxBitmap use_bitmap;
1311 if ((bm_width != bm_ww) || (bm_height != bm_hh))
1312 {
1313 // This indicates that the blitting code below will get
1314 // a clipped bitmap and therefore needs to move the origin
1315 // accordingly
1316 wxRegion tmp( xx,yy,ww,hh );
1317 tmp.Intersect( m_currentClippingRegion );
1318 tmp.GetBox(cx,cy,cw,ch);
1319
1320 // Scale and clipped bitmap
1321 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1322 }
1323 else
1324 {
1325 // Don't scale bitmap
1326 use_bitmap = memDC->m_selected;
1327 }
1328
1329 // apply mask if any
1330 GdkBitmap *mask = (GdkBitmap *) NULL;
1331 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1332
1333 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1334
1335 if (useMask && mask)
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_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1345 col.pixel = 0;
1346 gdk_gc_set_background( gc, &col );
1347 col.pixel = 1;
1348 gdk_gc_set_foreground( gc, &col );
1349 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1350 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1351 gdk_gc_set_clip_origin( gc, -cx, -cy );
1352 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1353 gdk_gc_set_stipple( gc, mask );
1354 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1355 gdk_gc_unref( gc );
1356 }
1357
1358 if (is_mono)
1359 {
1360 if (new_mask)
1361 gdk_gc_set_clip_mask( m_textGC, new_mask );
1362 else
1363 gdk_gc_set_clip_mask( m_textGC, mask );
1364 // was: gdk_gc_set_clip_origin( m_textGC, xx, yy );
1365 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1366 }
1367 else
1368 {
1369 if (new_mask)
1370 gdk_gc_set_clip_mask( m_penGC, new_mask );
1371 else
1372 gdk_gc_set_clip_mask( m_penGC, mask );
1373 // was: gdk_gc_set_clip_origin( m_penGC, xx, yy );
1374 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1375 }
1376 }
1377
1378 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1379 // drawing a mono-bitmap (XBitmap) we use the current text GC
1380
1381 if (is_mono)
1382 {
1383 #ifdef __WXGTK20__
1384 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1385 GdkGC *gc = gdk_gc_new( bitmap );
1386 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1387 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1388 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1389
1390 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1391
1392 gdk_bitmap_unref( bitmap );
1393 gdk_gc_unref( gc );
1394 #else
1395 // was: gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, xx, yy, ww, hh );
1396 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, cx, cy, cw, ch );
1397 #endif
1398 }
1399 else
1400 {
1401 // was: gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1402 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1403 }
1404
1405 // remove mask again if any
1406 if (useMask && mask)
1407 {
1408 if (is_mono)
1409 {
1410 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1411 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1412 if (!m_currentClippingRegion.IsNull())
1413 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1414 }
1415 else
1416 {
1417 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1418 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1419 if (!m_currentClippingRegion.IsNull())
1420 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1421 }
1422 }
1423
1424 if (new_mask)
1425 gdk_bitmap_unref( new_mask );
1426 }
1427 else // use_bitmap_method
1428 {
1429 if ((width != ww) || (height != hh))
1430 {
1431 // get clip coords
1432 wxRegion tmp( xx,yy,ww,hh );
1433 tmp.Intersect( m_currentClippingRegion );
1434 wxCoord cx,cy,cw,ch;
1435 tmp.GetBox(cx,cy,cw,ch);
1436
1437 // rescale bitmap
1438 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1439
1440 // draw scaled bitmap
1441 // was: gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1442 gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1443 }
1444 else
1445 {
1446 // No scaling and not a memory dc with a mask either
1447
1448 // copy including child window contents
1449 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1450 gdk_window_copy_area( m_window, m_penGC, xx, yy,
1451 srcDC->GetWindow(),
1452 xsrc, ysrc, width, height );
1453 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1454 }
1455 }
1456
1457 SetLogicalFunction( old_logical_func );
1458
1459 return TRUE;
1460 }
1461
1462 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1463 {
1464 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1465
1466 if (!m_window) return;
1467
1468 if (text.empty()) return;
1469
1470 #ifndef __WXGTK20__
1471 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1472
1473 wxCHECK_RET( font, wxT("invalid font") );
1474 #endif
1475
1476 x = XLOG2DEV(x);
1477 y = YLOG2DEV(y);
1478
1479 #ifdef __WXGTK20__
1480 wxCHECK_RET( m_context, wxT("no Pango context") );
1481 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1482 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1483
1484 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1485
1486 #if wxUSE_UNICODE
1487 const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
1488 #else
1489 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
1490 if ( !wdata )
1491 return;
1492 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1493 #endif
1494 size_t datalen = strlen((const char*)data);
1495 pango_layout_set_text( m_layout, (const char*) data, datalen);
1496
1497 if (underlined)
1498 {
1499 PangoAttrList *attrs = pango_attr_list_new();
1500 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1501 a->start_index = 0;
1502 a->end_index = datalen;
1503 pango_attr_list_insert(attrs, a);
1504 pango_layout_set_attributes(m_layout, attrs);
1505 pango_attr_list_unref(attrs);
1506 }
1507
1508 int w,h;
1509
1510 if (fabs(m_scaleY - 1.0) < 0.00001)
1511 {
1512 // If there is a user or actually any scale applied to
1513 // the device context, scale the font.
1514
1515 // scale font description
1516 gint oldSize = pango_font_description_get_size( m_fontdesc );
1517 double size = oldSize;
1518 size = size * m_scaleY;
1519 pango_font_description_set_size( m_fontdesc, (gint)size );
1520
1521 // actually apply scaled font
1522 pango_layout_set_font_description( m_layout, m_fontdesc );
1523
1524 pango_layout_get_pixel_size( m_layout, &w, &h );
1525 if ( m_backgroundMode == wxSOLID )
1526 {
1527 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1528 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1529 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1530 }
1531
1532 // Draw layout.
1533 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1534
1535 // reset unscaled size
1536 pango_font_description_set_size( m_fontdesc, oldSize );
1537
1538 // actually apply unscaled font
1539 pango_layout_set_font_description( m_layout, m_fontdesc );
1540 }
1541 else
1542 {
1543 pango_layout_get_pixel_size( m_layout, &w, &h );
1544 if ( m_backgroundMode == wxSOLID )
1545 {
1546 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1547 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1548 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1549 }
1550 // Draw layout.
1551 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1552 }
1553
1554 if (underlined)
1555 {
1556 // undo underline attributes setting:
1557 pango_layout_set_attributes(m_layout, NULL);
1558 }
1559
1560 wxCoord width = w;
1561 wxCoord height = h;
1562
1563 #else // GTK+ 1.x
1564 wxCoord width = gdk_string_width( font, text.mbc_str() );
1565 wxCoord height = font->ascent + font->descent;
1566
1567 if ( m_backgroundMode == wxSOLID )
1568 {
1569 gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() );
1570 gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height );
1571 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
1572 }
1573 gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text.mbc_str() );
1574
1575 /* CMB 17/7/98: simple underline: ignores scaling and underlying
1576 X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
1577 properties (see wxXt implementation) */
1578 if (m_font.GetUnderlined())
1579 {
1580 wxCoord ul_y = y + font->ascent;
1581 if (font->descent > 0) ul_y++;
1582 gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
1583 }
1584 #endif // GTK+ 2.0/1.x
1585
1586 width = wxCoord(width / m_scaleX);
1587 height = wxCoord(height / m_scaleY);
1588 CalcBoundingBox (x + width, y + height);
1589 CalcBoundingBox (x, y);
1590 }
1591
1592 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1593 {
1594 if (angle == 0.0)
1595 {
1596 DrawText(text, x, y);
1597 return;
1598 }
1599
1600 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1601
1602 if (!m_window) return;
1603
1604 #ifdef __WXGTK20__
1605 // implement later without GdkFont for GTK 2.0
1606 return;
1607 #else
1608 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1609
1610 wxCHECK_RET( font, wxT("invalid font") );
1611
1612 // the size of the text
1613 wxCoord w = gdk_string_width( font, text.mbc_str() );
1614 wxCoord h = font->ascent + font->descent;
1615
1616 // draw the string normally
1617 wxBitmap src(w, h);
1618 wxMemoryDC dc;
1619 dc.SelectObject(src);
1620 dc.SetFont(GetFont());
1621 dc.SetBackground(*wxWHITE_BRUSH);
1622 dc.SetBrush(*wxBLACK_BRUSH);
1623 dc.Clear();
1624 dc.DrawText(text, 0, 0);
1625 dc.SelectObject(wxNullBitmap);
1626
1627 // Calculate the size of the rotated bounding box.
1628 double rad = DegToRad(angle);
1629 double dx = cos(rad),
1630 dy = sin(rad);
1631
1632 // the rectngle vertices are counted clockwise with the first one being at
1633 // (0, 0) (or, rather, at (x, y))
1634 double x2 = w*dx,
1635 y2 = -w*dy; // y axis points to the bottom, hence minus
1636 double x4 = h*dy,
1637 y4 = h*dx;
1638 double x3 = x4 + x2,
1639 y3 = y4 + y2;
1640
1641 // calc max and min
1642 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1643 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1644 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1645 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1646
1647 // prepare to blit-with-rotate the bitmap to the DC
1648 wxImage image = src.ConvertToImage();
1649
1650 GdkColor *colText = m_textForegroundColour.GetColor(),
1651 *colBack = m_textBackgroundColour.GetColor();
1652
1653 bool textColSet = TRUE;
1654
1655 unsigned char *data = image.GetData();
1656
1657 // paint pixel by pixel
1658 for ( wxCoord srcX = 0; srcX < w; srcX++ )
1659 {
1660 for ( wxCoord srcY = 0; srcY < h; srcY++ )
1661 {
1662 // transform source coords to dest coords
1663 double r = sqrt((double)srcX*srcX + srcY*srcY);
1664 double angleOrig = atan2((double)srcY, (double)srcX) - rad;
1665 wxCoord dstX = (wxCoord)(r*cos(angleOrig) + 0.5),
1666 dstY = (wxCoord)(r*sin(angleOrig) + 0.5);
1667
1668 // black pixel?
1669 bool textPixel = data[(srcY*w + srcX)*3] == 0;
1670 if ( textPixel || (m_backgroundMode == wxSOLID) )
1671 {
1672 // change colour if needed
1673 if ( textPixel != textColSet )
1674 {
1675 gdk_gc_set_foreground( m_textGC, textPixel ? colText
1676 : colBack );
1677
1678 textColSet = textPixel;
1679 }
1680
1681 // don't use DrawPoint() because it uses the current pen
1682 // colour, and we don't need it here
1683 gdk_draw_point( m_window, m_textGC,
1684 XLOG2DEV(x) + dstX, YLOG2DEV(y) + dstY );
1685 }
1686 }
1687 }
1688
1689 // it would be better to draw with non underlined font and draw the line
1690 // manually here (it would be more straight...)
1691 #if 0
1692 if ( m_font.GetUnderlined() )
1693 {
1694 gdk_draw_line( m_window, m_textGC,
1695 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1696 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1697 }
1698 #endif // 0
1699
1700 // restore the font colour
1701 gdk_gc_set_foreground( m_textGC, colText );
1702
1703 // update the bounding box
1704 CalcBoundingBox(x + minX, y + minY);
1705 CalcBoundingBox(x + maxX, y + maxY);
1706 #endif
1707 }
1708
1709 void wxWindowDC::DoGetTextExtent(const wxString &string,
1710 wxCoord *width, wxCoord *height,
1711 wxCoord *descent, wxCoord *externalLeading,
1712 wxFont *theFont) const
1713 {
1714 if (string.IsEmpty())
1715 {
1716 if (width) (*width) = 0;
1717 if (height) (*height) = 0;
1718 return;
1719 }
1720
1721 #ifdef __WXGTK20__
1722 // Set new font description
1723 if (theFont)
1724 pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );
1725
1726 // Set layout's text
1727 #if wxUSE_UNICODE
1728 const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
1729 const char *dataUTF8 = (const char *)data;
1730 #else
1731 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
1732 if ( !wdata )
1733 {
1734 if (width) (*width) = 0;
1735 if (height) (*height) = 0;
1736 return;
1737 }
1738 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1739 const char *dataUTF8 = (const char *)data;
1740 #endif
1741
1742 if ( !dataUTF8 )
1743 {
1744 // hardly ideal, but what else can we do if conversion failed?
1745 return;
1746 }
1747
1748 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1749
1750 int w,h;
1751 pango_layout_get_pixel_size( m_layout, &w, &h );
1752
1753 if (width)
1754 *width = (wxCoord) w;
1755 if (height)
1756 *height = (wxCoord) h;
1757 if (descent)
1758 {
1759 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1760 int baseline = pango_layout_iter_get_baseline(iter);
1761 pango_layout_iter_free(iter);
1762 *descent = h - PANGO_PIXELS(baseline);
1763 }
1764 if (externalLeading)
1765 *externalLeading = 0; // ??
1766
1767 // Reset old font description
1768 if (theFont)
1769 pango_layout_set_font_description( m_layout, m_fontdesc );
1770 #else // GTK+ 1.x
1771 wxFont fontToUse = m_font;
1772 if (theFont) fontToUse = *theFont;
1773
1774 GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
1775 if (width) (*width) = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
1776 if (height) (*height) = wxCoord((font->ascent + font->descent) / m_scaleY);
1777 if (descent) (*descent) = wxCoord(font->descent / m_scaleY);
1778 if (externalLeading) (*externalLeading) = 0; // ??
1779 #endif // GTK+ 2/1
1780 }
1781
1782 wxCoord wxWindowDC::GetCharWidth() const
1783 {
1784 #ifdef __WXGTK20__
1785 pango_layout_set_text( m_layout, "H", 1 );
1786 int w,h;
1787 pango_layout_get_pixel_size( m_layout, &w, &h );
1788 return w;
1789 #else
1790 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1791 wxCHECK_MSG( font, -1, wxT("invalid font") );
1792
1793 return wxCoord(gdk_string_width( font, "H" ) / m_scaleX);
1794 #endif
1795 }
1796
1797 wxCoord wxWindowDC::GetCharHeight() const
1798 {
1799 #ifdef __WXGTK20__
1800 pango_layout_set_text( m_layout, "H", 1 );
1801 int w,h;
1802 pango_layout_get_pixel_size( m_layout, &w, &h );
1803 return h;
1804 #else
1805 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1806 wxCHECK_MSG( font, -1, wxT("invalid font") );
1807
1808 return wxCoord((font->ascent + font->descent) / m_scaleY);
1809 #endif
1810 }
1811
1812 void wxWindowDC::Clear()
1813 {
1814 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1815
1816 if (!m_window) return;
1817
1818 // VZ: the code below results in infinite recursion and crashes when
1819 // dc.Clear() is done from OnPaint() so I disable it for now.
1820 // I don't know what the correct fix is but Clear() surely should not
1821 // reenter OnPaint()!
1822 #if 0
1823 /* - we either are a memory dc or have a window as the
1824 owner. anything else shouldn't happen.
1825 - we don't use gdk_window_clear() as we don't set
1826 the window's background colour anymore. it is too
1827 much pain to keep the DC's and the window's back-
1828 ground colour in synch. */
1829
1830 if (m_owner)
1831 {
1832 m_owner->Clear();
1833 return;
1834 }
1835
1836 if (m_isMemDC)
1837 {
1838 int width,height;
1839 GetSize( &width, &height );
1840 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1841 return;
1842 }
1843 #else // 1
1844 int width,height;
1845 GetSize( &width, &height );
1846 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1847 #endif // 0/1
1848 }
1849
1850 void wxWindowDC::SetFont( const wxFont &font )
1851 {
1852 m_font = font;
1853
1854 #ifdef __WXGTK20__
1855 if (m_font.Ok())
1856 {
1857 if (m_fontdesc)
1858 pango_font_description_free( m_fontdesc );
1859
1860 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1861
1862
1863 if (m_owner)
1864 {
1865 PangoContext *oldContext = m_context;
1866
1867 // We might want to use the X11 context for faster
1868 // rendering on screen
1869 if (m_font.GetNoAntiAliasing())
1870 m_context = m_owner->GtkGetPangoX11Context();
1871 else
1872 m_context = m_owner->GtkGetPangoDefaultContext();
1873
1874 // If we switch back/forth between different contexts
1875 // we also have to create a new layout. I think so,
1876 // at least, and it doesn't hurt to do it.
1877 if (oldContext != m_context)
1878 {
1879 if (m_layout)
1880 g_object_unref( G_OBJECT( m_layout ) );
1881
1882 m_layout = pango_layout_new( m_context );
1883 }
1884 }
1885
1886 pango_layout_set_font_description( m_layout, m_fontdesc );
1887 }
1888 #endif
1889 }
1890
1891 void wxWindowDC::SetPen( const wxPen &pen )
1892 {
1893 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1894
1895 if (m_pen == pen) return;
1896
1897 m_pen = pen;
1898
1899 if (!m_pen.Ok()) return;
1900
1901 if (!m_window) return;
1902
1903 gint width = m_pen.GetWidth();
1904 if (width <= 0)
1905 {
1906 // CMB: if width is non-zero scale it with the dc
1907 width = 1;
1908 }
1909 else
1910 {
1911 // X doesn't allow different width in x and y and so we take
1912 // the average
1913 double w = 0.5 +
1914 ( fabs((double) XLOG2DEVREL(width)) +
1915 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1916 width = (int)w;
1917 if ( !width )
1918 {
1919 // width can't be 0 or an internal GTK error occurs inside
1920 // gdk_gc_set_dashes() below
1921 width = 1;
1922 }
1923 }
1924
1925 static const wxGTKDash dotted[] = {1, 1};
1926 static const wxGTKDash short_dashed[] = {2, 2};
1927 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1928 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1929
1930 // We express dash pattern in pen width unit, so we are
1931 // independent of zoom factor and so on...
1932 int req_nb_dash;
1933 const wxGTKDash *req_dash;
1934
1935 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1936 switch (m_pen.GetStyle())
1937 {
1938 case wxUSER_DASH:
1939 {
1940 lineStyle = GDK_LINE_ON_OFF_DASH;
1941 req_nb_dash = m_pen.GetDashCount();
1942 req_dash = (wxGTKDash*)m_pen.GetDash();
1943 break;
1944 }
1945 case wxDOT:
1946 {
1947 lineStyle = GDK_LINE_ON_OFF_DASH;
1948 req_nb_dash = 2;
1949 req_dash = dotted;
1950 break;
1951 }
1952 case wxLONG_DASH:
1953 {
1954 lineStyle = GDK_LINE_ON_OFF_DASH;
1955 req_nb_dash = 2;
1956 req_dash = wxCoord_dashed;
1957 break;
1958 }
1959 case wxSHORT_DASH:
1960 {
1961 lineStyle = GDK_LINE_ON_OFF_DASH;
1962 req_nb_dash = 2;
1963 req_dash = short_dashed;
1964 break;
1965 }
1966 case wxDOT_DASH:
1967 {
1968 // lineStyle = GDK_LINE_DOUBLE_DASH;
1969 lineStyle = GDK_LINE_ON_OFF_DASH;
1970 req_nb_dash = 4;
1971 req_dash = dotted_dashed;
1972 break;
1973 }
1974
1975 case wxTRANSPARENT:
1976 case wxSTIPPLE_MASK_OPAQUE:
1977 case wxSTIPPLE:
1978 case wxSOLID:
1979 default:
1980 {
1981 lineStyle = GDK_LINE_SOLID;
1982 req_dash = (wxGTKDash*)NULL;
1983 req_nb_dash = 0;
1984 break;
1985 }
1986 }
1987
1988 #if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
1989 if (req_dash && req_nb_dash)
1990 {
1991 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1992 if (real_req_dash)
1993 {
1994 for (int i = 0; i < req_nb_dash; i++)
1995 real_req_dash[i] = req_dash[i] * width;
1996 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1997 delete[] real_req_dash;
1998 }
1999 else
2000 {
2001 // No Memory. We use non-scaled dash pattern...
2002 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
2003 }
2004 }
2005 #endif // GTK+ > 1.0
2006
2007 GdkCapStyle capStyle = GDK_CAP_ROUND;
2008 switch (m_pen.GetCap())
2009 {
2010 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
2011 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
2012 case wxCAP_ROUND:
2013 default:
2014 {
2015 if (width <= 1)
2016 {
2017 width = 0;
2018 capStyle = GDK_CAP_NOT_LAST;
2019 }
2020 else
2021 {
2022 capStyle = GDK_CAP_ROUND;
2023 }
2024 break;
2025 }
2026 }
2027
2028 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
2029 switch (m_pen.GetJoin())
2030 {
2031 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2032 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2033 case wxJOIN_ROUND:
2034 default: { joinStyle = GDK_JOIN_ROUND; break; }
2035 }
2036
2037 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2038
2039 m_pen.GetColour().CalcPixel( m_cmap );
2040 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2041 }
2042
2043 void wxWindowDC::SetBrush( const wxBrush &brush )
2044 {
2045 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2046
2047 if (m_brush == brush) return;
2048
2049 m_brush = brush;
2050
2051 if (!m_brush.Ok()) return;
2052
2053 if (!m_window) return;
2054
2055 m_brush.GetColour().CalcPixel( m_cmap );
2056 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2057
2058 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2059
2060 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2061 {
2062 if (m_brush.GetStipple()->GetPixmap())
2063 {
2064 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2065 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2066 }
2067 else
2068 {
2069 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2070 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetBitmap() );
2071 }
2072 }
2073
2074 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2075 {
2076 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2077 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2078 }
2079
2080 if (IS_HATCH(m_brush.GetStyle()))
2081 {
2082 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2083 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2084 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2085 }
2086 }
2087
2088 void wxWindowDC::SetBackground( const wxBrush &brush )
2089 {
2090 /* CMB 21/7/98: Added SetBackground. Sets background brush
2091 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2092
2093 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2094
2095 if (m_backgroundBrush == brush) return;
2096
2097 m_backgroundBrush = brush;
2098
2099 if (!m_backgroundBrush.Ok()) return;
2100
2101 if (!m_window) return;
2102
2103 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2104 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2105 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2106 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2107 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2108
2109 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2110
2111 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2112 {
2113 if (m_backgroundBrush.GetStipple()->GetPixmap())
2114 {
2115 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2116 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2117 }
2118 else
2119 {
2120 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2121 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetBitmap() );
2122 }
2123 }
2124
2125 if (IS_HATCH(m_backgroundBrush.GetStyle()))
2126 {
2127 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2128 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2129 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2130 }
2131 }
2132
2133 void wxWindowDC::SetLogicalFunction( int function )
2134 {
2135 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2136
2137 if (m_logicalFunction == function)
2138 return;
2139
2140 // VZ: shouldn't this be a CHECK?
2141 if (!m_window)
2142 return;
2143
2144 GdkFunction mode;
2145 switch (function)
2146 {
2147 case wxXOR: mode = GDK_XOR; break;
2148 case wxINVERT: mode = GDK_INVERT; break;
2149 #if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
2150 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2151 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2152 case wxCLEAR: mode = GDK_CLEAR; break;
2153 case wxSET: mode = GDK_SET; break;
2154 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2155 case wxAND: mode = GDK_AND; break;
2156 case wxOR: mode = GDK_OR; break;
2157 case wxEQUIV: mode = GDK_EQUIV; break;
2158 case wxNAND: mode = GDK_NAND; break;
2159 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2160 case wxCOPY: mode = GDK_COPY; break;
2161 case wxNO_OP: mode = GDK_NOOP; break;
2162 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2163
2164 // unsupported by GTK
2165 case wxNOR: mode = GDK_COPY; break;
2166 #endif // GTK+ > 1.0
2167 default:
2168 wxFAIL_MSG( wxT("unsupported logical function") );
2169 mode = GDK_COPY;
2170 }
2171
2172 m_logicalFunction = function;
2173
2174 gdk_gc_set_function( m_penGC, mode );
2175 gdk_gc_set_function( m_brushGC, mode );
2176
2177 // to stay compatible with wxMSW, we don't apply ROPs to the text
2178 // operations (i.e. DrawText/DrawRotatedText).
2179 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2180 gdk_gc_set_function( m_textGC, mode );
2181 }
2182
2183 void wxWindowDC::SetTextForeground( const wxColour &col )
2184 {
2185 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2186
2187 // don't set m_textForegroundColour to an invalid colour as we'd crash
2188 // later then (we use m_textForegroundColour.GetColor() without checking
2189 // in a few places)
2190 if ( !col.Ok() || (m_textForegroundColour == col) )
2191 return;
2192
2193 m_textForegroundColour = col;
2194
2195 if ( m_window )
2196 {
2197 m_textForegroundColour.CalcPixel( m_cmap );
2198 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2199 }
2200 }
2201
2202 void wxWindowDC::SetTextBackground( const wxColour &col )
2203 {
2204 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2205
2206 // same as above
2207 if ( !col.Ok() || (m_textBackgroundColour == col) )
2208 return;
2209
2210 m_textBackgroundColour = col;
2211
2212 if ( m_window )
2213 {
2214 m_textBackgroundColour.CalcPixel( m_cmap );
2215 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2216 }
2217 }
2218
2219 void wxWindowDC::SetBackgroundMode( int mode )
2220 {
2221 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2222
2223 m_backgroundMode = mode;
2224
2225 if (!m_window) return;
2226
2227 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2228 // transparent/solid background mode
2229
2230 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2231 {
2232 gdk_gc_set_fill( m_brushGC,
2233 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2234 }
2235 }
2236
2237 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2238 {
2239 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2240 }
2241
2242 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2243 {
2244 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2245
2246 if (!m_window) return;
2247
2248 wxRect rect;
2249 rect.x = XLOG2DEV(x);
2250 rect.y = YLOG2DEV(y);
2251 rect.width = XLOG2DEVREL(width);
2252 rect.height = YLOG2DEVREL(height);
2253
2254 if (!m_currentClippingRegion.IsNull())
2255 m_currentClippingRegion.Intersect( rect );
2256 else
2257 m_currentClippingRegion.Union( rect );
2258
2259 #if USE_PAINT_REGION
2260 if (!m_paintClippingRegion.IsNull())
2261 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2262 #endif
2263
2264 wxCoord xx, yy, ww, hh;
2265 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2266 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2267
2268 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2269 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2270 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2271 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2272 }
2273
2274 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2275 {
2276 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2277
2278 if (region.Empty())
2279 {
2280 DestroyClippingRegion();
2281 return;
2282 }
2283
2284 if (!m_window) return;
2285
2286 if (!m_currentClippingRegion.IsNull())
2287 m_currentClippingRegion.Intersect( region );
2288 else
2289 m_currentClippingRegion.Union( region );
2290
2291 #if USE_PAINT_REGION
2292 if (!m_paintClippingRegion.IsNull())
2293 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2294 #endif
2295
2296 wxCoord xx, yy, ww, hh;
2297 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2298 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2299
2300 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2301 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2302 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2303 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2304 }
2305
2306 void wxWindowDC::DestroyClippingRegion()
2307 {
2308 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2309
2310 wxDC::DestroyClippingRegion();
2311
2312 m_currentClippingRegion.Clear();
2313
2314 #if USE_PAINT_REGION
2315 if (!m_paintClippingRegion.IsEmpty())
2316 m_currentClippingRegion.Union( m_paintClippingRegion );
2317 #endif
2318
2319 if (!m_window) return;
2320
2321 if (m_currentClippingRegion.IsEmpty())
2322 {
2323 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2324 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2325 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2326 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2327 }
2328 else
2329 {
2330 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2331 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2332 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2333 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2334 }
2335 }
2336
2337 void wxWindowDC::Destroy()
2338 {
2339 if (m_penGC) wxFreePoolGC( m_penGC );
2340 m_penGC = (GdkGC*) NULL;
2341 if (m_brushGC) wxFreePoolGC( m_brushGC );
2342 m_brushGC = (GdkGC*) NULL;
2343 if (m_textGC) wxFreePoolGC( m_textGC );
2344 m_textGC = (GdkGC*) NULL;
2345 if (m_bgGC) wxFreePoolGC( m_bgGC );
2346 m_bgGC = (GdkGC*) NULL;
2347 }
2348
2349 void wxWindowDC::ComputeScaleAndOrigin()
2350 {
2351 /* CMB: copy scale to see if it changes */
2352 double origScaleX = m_scaleX;
2353 double origScaleY = m_scaleY;
2354
2355 wxDC::ComputeScaleAndOrigin();
2356
2357 /* CMB: if scale has changed call SetPen to recalulate the line width */
2358 if ((m_scaleX != origScaleX || m_scaleY != origScaleY) &&
2359 (m_pen.Ok()))
2360 {
2361 /* this is a bit artificial, but we need to force wxDC to think
2362 the pen has changed */
2363 wxPen pen = m_pen;
2364 m_pen = wxNullPen;
2365 SetPen( pen );
2366 }
2367 }
2368
2369 // Resolution in pixels per logical inch
2370 wxSize wxWindowDC::GetPPI() const
2371 {
2372 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2373 }
2374
2375 int wxWindowDC::GetDepth() const
2376 {
2377 wxFAIL_MSG(wxT("not implemented"));
2378
2379 return -1;
2380 }
2381
2382
2383 //-----------------------------------------------------------------------------
2384 // wxPaintDC
2385 //-----------------------------------------------------------------------------
2386
2387 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2388
2389 // Limit the paint region to the window size. Sometimes
2390 // the paint region is too big, and this risks X11 errors
2391 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2392 {
2393 wxRect originalRect = region.GetBox();
2394 wxRect rect(originalRect);
2395 if (rect.width + rect.x > sz.x)
2396 rect.width = sz.x - rect.x;
2397 if (rect.height + rect.y > sz.y)
2398 rect.height = sz.y - rect.y;
2399 if (rect != originalRect)
2400 {
2401 region = wxRegion(rect);
2402 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2403 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2404 rect.x, rect.y, rect.width, rect.height);
2405 }
2406 }
2407
2408 wxPaintDC::wxPaintDC( wxWindow *win )
2409 : wxClientDC( win )
2410 {
2411 #if USE_PAINT_REGION
2412 if (!win->m_clipPaintRegion)
2413 return;
2414
2415 wxSize sz = win->GetSize();
2416 m_paintClippingRegion = win->GetUpdateRegion();
2417 wxLimitRegionToSize(m_paintClippingRegion, sz);
2418
2419 GdkRegion *region = m_paintClippingRegion.GetRegion();
2420 if ( region )
2421 {
2422 m_currentClippingRegion.Union( m_paintClippingRegion );
2423 wxLimitRegionToSize(m_currentClippingRegion, sz);
2424
2425 if (sz.x <= 0 || sz.y <= 0)
2426 return ;
2427
2428 gdk_gc_set_clip_region( m_penGC, region );
2429 gdk_gc_set_clip_region( m_brushGC, region );
2430 gdk_gc_set_clip_region( m_textGC, region );
2431 gdk_gc_set_clip_region( m_bgGC, region );
2432 }
2433 #endif // USE_PAINT_REGION
2434 }
2435
2436 //-----------------------------------------------------------------------------
2437 // wxClientDC
2438 //-----------------------------------------------------------------------------
2439
2440 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2441
2442 wxClientDC::wxClientDC( wxWindow *win )
2443 : wxWindowDC( win )
2444 {
2445 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2446
2447 #ifdef __WXUNIVERSAL__
2448 wxPoint ptOrigin = win->GetClientAreaOrigin();
2449 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2450 wxSize size = win->GetClientSize();
2451 SetClippingRegion(wxPoint(0, 0), size);
2452 #endif // __WXUNIVERSAL__
2453 }
2454
2455 void wxClientDC::DoGetSize(int *width, int *height) const
2456 {
2457 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2458
2459 m_owner->GetClientSize( width, height );
2460 }
2461
2462 // ----------------------------------------------------------------------------
2463 // wxDCModule
2464 // ----------------------------------------------------------------------------
2465
2466 class wxDCModule : public wxModule
2467 {
2468 public:
2469 bool OnInit();
2470 void OnExit();
2471
2472 private:
2473 DECLARE_DYNAMIC_CLASS(wxDCModule)
2474 };
2475
2476 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2477
2478 bool wxDCModule::OnInit()
2479 {
2480 wxInitGCPool();
2481 return TRUE;
2482 }
2483
2484 void wxDCModule::OnExit()
2485 {
2486 wxCleanUpGCPool();
2487 }
wxWidgets (Impactor)