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[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __VMS
14 #define XCopyPlane XCOPYPLANE
15 #endif
16
17 #include "wx/dcclient.h"
18
19 #ifndef WX_PRECOMP
20 #include "wx/log.h"
21 #include "wx/dcmemory.h"
22 #include "wx/math.h" // for floating-point functions
23 #include "wx/image.h"
24 #endif
25
26 #include "wx/module.h"
27 #include "wx/fontutil.h"
28
29 #include "wx/gtk/win_gtk.h"
30 #include "wx/gtk/private.h"
31
32 #include <gdk/gdk.h>
33 #include <gdk/gdkx.h>
34 #include <gdk/gdkprivate.h>
35 #include <gtk/gtk.h>
36
37 //-----------------------------------------------------------------------------
38 // local defines
39 //-----------------------------------------------------------------------------
40
41 #define USE_PAINT_REGION 1
42
43 //-----------------------------------------------------------------------------
44 // local data
45 //-----------------------------------------------------------------------------
46
47 #include "bdiag.xbm"
48 #include "fdiag.xbm"
49 #include "cdiag.xbm"
50 #include "horiz.xbm"
51 #include "verti.xbm"
52 #include "cross.xbm"
53 #define num_hatches 6
54
55 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
56 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
57
58
59 static GdkPixmap *hatches[num_hatches];
60 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
61
62 extern GtkWidget *wxGetRootWindow();
63
64 //-----------------------------------------------------------------------------
65 // constants
66 //-----------------------------------------------------------------------------
67
68 const double RAD2DEG = 180.0 / M_PI;
69
70 // ----------------------------------------------------------------------------
71 // private functions
72 // ----------------------------------------------------------------------------
73
74 static inline double dmax(double a, double b) { return a > b ? a : b; }
75 static inline double dmin(double a, double b) { return a < b ? a : b; }
76
77 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
78
79 //-----------------------------------------------------------------------------
80 // temporary implementation of the missing GDK function
81 //-----------------------------------------------------------------------------
82
83 #include "gdk/gdkprivate.h"
84
85 static
86 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
87 GdkGC *gc,
88 GdkDrawable *src,
89 gint xsrc,
90 gint ysrc,
91 gint xdest,
92 gint ydest,
93 gint width,
94 gint height)
95 {
96 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
98 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
99
100 gint src_width, src_height;
101 gdk_drawable_get_size(src, &src_width, &src_height);
102 if (width == -1) width = src_width;
103 if (height == -1) height = src_height;
104
105 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
106 GDK_WINDOW_XID(src),
107 GDK_WINDOW_XID(drawable),
108 GDK_GC_XGC(gc),
109 xsrc, ysrc,
110 width, height,
111 0, 0,
112 1 );
113 }
114
115 //-----------------------------------------------------------------------------
116 // Implement Pool of Graphic contexts. Creating them takes too much time.
117 //-----------------------------------------------------------------------------
118
119 enum wxPoolGCType
120 {
121 wxGC_ERROR = 0,
122 wxTEXT_MONO,
123 wxBG_MONO,
124 wxPEN_MONO,
125 wxBRUSH_MONO,
126 wxTEXT_COLOUR,
127 wxBG_COLOUR,
128 wxPEN_COLOUR,
129 wxBRUSH_COLOUR,
130 wxTEXT_SCREEN,
131 wxBG_SCREEN,
132 wxPEN_SCREEN,
133 wxBRUSH_SCREEN
134 };
135
136 struct wxGC
137 {
138 GdkGC *m_gc;
139 wxPoolGCType m_type;
140 bool m_used;
141 };
142
143 #define GC_POOL_ALLOC_SIZE 100
144
145 static int wxGCPoolSize = 0;
146
147 static wxGC *wxGCPool = NULL;
148
149 static void wxInitGCPool()
150 {
151 // This really could wait until the first call to
152 // wxGetPoolGC, but we will make the first allocation
153 // now when other initialization is being performed.
154
155 // Set initial pool size.
156 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
157
158 // Allocate initial pool.
159 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
160 if (wxGCPool == NULL)
161 {
162 // If we cannot malloc, then fail with error
163 // when debug is enabled. If debug is not enabled,
164 // the problem will eventually get caught
165 // in wxGetPoolGC.
166 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
167 return;
168 }
169
170 // Zero initial pool.
171 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
172 }
173
174 static void wxCleanUpGCPool()
175 {
176 for (int i = 0; i < wxGCPoolSize; i++)
177 {
178 if (wxGCPool[i].m_gc)
179 g_object_unref (wxGCPool[i].m_gc);
180 }
181
182 free(wxGCPool);
183 wxGCPool = NULL;
184 wxGCPoolSize = 0;
185 }
186
187 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
188 {
189 wxGC *pptr;
190
191 // Look for an available GC.
192 for (int i = 0; i < wxGCPoolSize; i++)
193 {
194 if (!wxGCPool[i].m_gc)
195 {
196 wxGCPool[i].m_gc = gdk_gc_new( window );
197 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
198 wxGCPool[i].m_type = type;
199 wxGCPool[i].m_used = false;
200 }
201 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
202 {
203 wxGCPool[i].m_used = true;
204 return wxGCPool[i].m_gc;
205 }
206 }
207
208 // We did not find an available GC.
209 // We need to grow the GC pool.
210 pptr = (wxGC *)realloc(wxGCPool,
211 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
212 if (pptr != NULL)
213 {
214 // Initialize newly allocated pool.
215 wxGCPool = pptr;
216 memset(&wxGCPool[wxGCPoolSize], 0,
217 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
218
219 // Initialize entry we will return.
220 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
221 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
222 wxGCPool[wxGCPoolSize].m_type = type;
223 wxGCPool[wxGCPoolSize].m_used = true;
224
225 // Set new value of pool size.
226 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
227
228 // Return newly allocated entry.
229 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
230 }
231
232 // The realloc failed. Fall through to error.
233 wxFAIL_MSG( wxT("No GC available") );
234
235 return (GdkGC*) NULL;
236 }
237
238 static void wxFreePoolGC( GdkGC *gc )
239 {
240 for (int i = 0; i < wxGCPoolSize; i++)
241 {
242 if (wxGCPool[i].m_gc == gc)
243 {
244 wxGCPool[i].m_used = false;
245 return;
246 }
247 }
248
249 wxFAIL_MSG( wxT("Wrong GC") );
250 }
251
252 //-----------------------------------------------------------------------------
253 // wxWindowDC
254 //-----------------------------------------------------------------------------
255
256 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
257
258 wxWindowDC::wxWindowDC()
259 {
260 m_penGC = (GdkGC *) NULL;
261 m_brushGC = (GdkGC *) NULL;
262 m_textGC = (GdkGC *) NULL;
263 m_bgGC = (GdkGC *) NULL;
264 m_cmap = (GdkColormap *) NULL;
265 m_isMemDC = false;
266 m_isScreenDC = false;
267 m_owner = (wxWindow *)NULL;
268 m_context = (PangoContext *)NULL;
269 m_layout = (PangoLayout *)NULL;
270 m_fontdesc = (PangoFontDescription *)NULL;
271 }
272
273 wxWindowDC::wxWindowDC( wxWindow *window )
274 {
275 wxASSERT_MSG( window, wxT("DC needs a window") );
276
277 m_penGC = (GdkGC *) NULL;
278 m_brushGC = (GdkGC *) NULL;
279 m_textGC = (GdkGC *) NULL;
280 m_bgGC = (GdkGC *) NULL;
281 m_cmap = (GdkColormap *) NULL;
282 m_owner = (wxWindow *)NULL;
283 m_isMemDC = false;
284 m_isScreenDC = false;
285 m_font = window->GetFont();
286
287 GtkWidget *widget = window->m_wxwindow;
288
289 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
290 // code should still be able to create wxClientDCs for them, so we will
291 // use the parent window here then.
292 if ( !widget )
293 {
294 window = window->GetParent();
295 widget = window->m_wxwindow;
296 }
297
298 wxASSERT_MSG( widget, wxT("DC needs a widget") );
299
300 m_context = window->GtkGetPangoDefaultContext();
301 m_layout = pango_layout_new( m_context );
302 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
303
304 GtkPizza *pizza = GTK_PIZZA( widget );
305 m_window = pizza->bin_window;
306
307 // Window not realized ?
308 if (!m_window)
309 {
310 // Don't report problems as per MSW.
311 m_ok = true;
312
313 return;
314 }
315
316 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
317
318 SetUpDC();
319
320 /* this must be done after SetUpDC, bacause SetUpDC calls the
321 repective SetBrush, SetPen, SetBackground etc functions
322 to set up the DC. SetBackground call m_owner->SetBackground
323 and this might not be desired as the standard dc background
324 is white whereas a window might assume gray to be the
325 standard (as e.g. wxStatusBar) */
326
327 m_owner = window;
328 }
329
330 wxWindowDC::~wxWindowDC()
331 {
332 Destroy();
333
334 if (m_layout)
335 g_object_unref (m_layout);
336 if (m_fontdesc)
337 pango_font_description_free( m_fontdesc );
338 }
339
340 void wxWindowDC::SetUpDC()
341 {
342 m_ok = true;
343
344 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
345
346 if (m_isScreenDC)
347 {
348 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
349 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
350 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
351 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
352 }
353 else
354 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
355 {
356 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
357 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
358 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
359 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
360 }
361 else
362 {
363 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
364 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
365 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
366 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
367 }
368
369 /* background colour */
370 m_backgroundBrush = *wxWHITE_BRUSH;
371 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
372 #ifdef __WXGTK24__
373 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
374 #else
375 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
376 #endif
377
378 /* m_textGC */
379 m_textForegroundColour.CalcPixel( m_cmap );
380 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
381
382 m_textBackgroundColour.CalcPixel( m_cmap );
383 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
384
385 gdk_gc_set_fill( m_textGC, GDK_SOLID );
386
387 /* m_penGC */
388 m_pen.GetColour().CalcPixel( m_cmap );
389 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
390 gdk_gc_set_background( m_penGC, bg_col );
391
392 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
393
394 /* m_brushGC */
395 m_brush.GetColour().CalcPixel( m_cmap );
396 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
397 gdk_gc_set_background( m_brushGC, bg_col );
398
399 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
400
401 /* m_bgGC */
402 gdk_gc_set_background( m_bgGC, bg_col );
403 gdk_gc_set_foreground( m_bgGC, bg_col );
404
405 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
406
407 /* ROPs */
408 gdk_gc_set_function( m_textGC, GDK_COPY );
409 gdk_gc_set_function( m_brushGC, GDK_COPY );
410 gdk_gc_set_function( m_penGC, GDK_COPY );
411
412 /* clipping */
413 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
414 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
415 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
416 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
417
418 if (!hatch_bitmap)
419 {
420 hatch_bitmap = hatches;
421 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
422 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
423 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
424 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
425 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
426 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
427 }
428 }
429
430 void wxWindowDC::DoGetSize( int* width, int* height ) const
431 {
432 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
433
434 m_owner->GetSize(width, height);
435 }
436
437 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
438 const wxColour & col, int style);
439
440 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
441 const wxColour& col, int style)
442 {
443 return wxDoFloodFill(this, x, y, col, style);
444 }
445
446 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
447 {
448 // Generic (and therefore rather inefficient) method.
449 // Could be improved.
450 wxMemoryDC memdc;
451 wxBitmap bitmap(1, 1);
452 memdc.SelectObject(bitmap);
453 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
454 memdc.SelectObject(wxNullBitmap);
455
456 wxImage image = bitmap.ConvertToImage();
457 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
458 return true;
459 }
460
461 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
462 {
463 wxCHECK_RET( Ok(), wxT("invalid window dc") );
464
465 if (m_pen.GetStyle() != wxTRANSPARENT)
466 {
467 if (m_window)
468 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
469
470 CalcBoundingBox(x1, y1);
471 CalcBoundingBox(x2, y2);
472 }
473 }
474
475 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
476 {
477 wxCHECK_RET( Ok(), wxT("invalid window dc") );
478
479 if (m_pen.GetStyle() != wxTRANSPARENT)
480 {
481 int w = 0;
482 int h = 0;
483 GetSize( &w, &h );
484 wxCoord xx = XLOG2DEV(x);
485 wxCoord yy = YLOG2DEV(y);
486 if (m_window)
487 {
488 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
489 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
490 }
491 }
492 }
493
494 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
495 wxCoord xc, wxCoord yc )
496 {
497 wxCHECK_RET( Ok(), wxT("invalid window dc") );
498
499 wxCoord xx1 = XLOG2DEV(x1);
500 wxCoord yy1 = YLOG2DEV(y1);
501 wxCoord xx2 = XLOG2DEV(x2);
502 wxCoord yy2 = YLOG2DEV(y2);
503 wxCoord xxc = XLOG2DEV(xc);
504 wxCoord yyc = YLOG2DEV(yc);
505 double dx = xx1 - xxc;
506 double dy = yy1 - yyc;
507 double radius = sqrt((double)(dx*dx+dy*dy));
508 wxCoord r = (wxCoord)radius;
509 double radius1, radius2;
510
511 if (xx1 == xx2 && yy1 == yy2)
512 {
513 radius1 = 0.0;
514 radius2 = 360.0;
515 }
516 else if ( wxIsNullDouble(radius) )
517 {
518 radius1 =
519 radius2 = 0.0;
520 }
521 else
522 {
523 radius1 = (xx1 - xxc == 0) ?
524 (yy1 - yyc < 0) ? 90.0 : -90.0 :
525 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
526 radius2 = (xx2 - xxc == 0) ?
527 (yy2 - yyc < 0) ? 90.0 : -90.0 :
528 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
529 }
530 wxCoord alpha1 = wxCoord(radius1 * 64.0);
531 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
532 while (alpha2 <= 0) alpha2 += 360*64;
533 while (alpha1 > 360*64) alpha1 -= 360*64;
534
535 if (m_window)
536 {
537 if (m_brush.GetStyle() != wxTRANSPARENT)
538 {
539 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
540 {
541 gdk_gc_set_ts_origin( m_textGC,
542 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
543 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
544 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
545 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
546 } else
547 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
548 {
549 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
550 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
551 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
552 } else
553 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
554 {
555 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
556 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
557 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
558 } else
559 if (m_brush.GetStyle() == wxSTIPPLE)
560 {
561 gdk_gc_set_ts_origin( m_brushGC,
562 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
563 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
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 }
567 else
568 {
569 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
570 }
571 }
572
573 if (m_pen.GetStyle() != wxTRANSPARENT)
574 {
575 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
576
577 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
578 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
579 }
580 }
581
582 CalcBoundingBox (x1, y1);
583 CalcBoundingBox (x2, y2);
584 }
585
586 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
587 {
588 wxCHECK_RET( Ok(), wxT("invalid window dc") );
589
590 wxCoord xx = XLOG2DEV(x);
591 wxCoord yy = YLOG2DEV(y);
592 wxCoord ww = m_signX * XLOG2DEVREL(width);
593 wxCoord hh = m_signY * YLOG2DEVREL(height);
594
595 // CMB: handle -ve width and/or height
596 if (ww < 0) { ww = -ww; xx = xx - ww; }
597 if (hh < 0) { hh = -hh; yy = yy - hh; }
598
599 if (m_window)
600 {
601 wxCoord start = wxCoord(sa * 64.0);
602 wxCoord end = wxCoord((ea-sa) * 64.0);
603
604 if (m_brush.GetStyle() != wxTRANSPARENT)
605 {
606 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
607 {
608 gdk_gc_set_ts_origin( m_textGC,
609 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
610 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
611 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
612 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
613 } else
614 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
615 {
616 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
617 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
618 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
619 } else
620 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
621 {
622 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
623 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
624 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
625 } else
626 if (m_brush.GetStyle() == wxSTIPPLE)
627 {
628 gdk_gc_set_ts_origin( m_brushGC,
629 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
630 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
631 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
632 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
633 }
634 else
635 {
636 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
637 }
638 }
639
640 if (m_pen.GetStyle() != wxTRANSPARENT)
641 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
642 }
643
644 CalcBoundingBox (x, y);
645 CalcBoundingBox (x + width, y + height);
646 }
647
648 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
649 {
650 wxCHECK_RET( Ok(), wxT("invalid window dc") );
651
652 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
653 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
654
655 CalcBoundingBox (x, y);
656 }
657
658 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
659 {
660 wxCHECK_RET( Ok(), wxT("invalid window dc") );
661
662 if (m_pen.GetStyle() == wxTRANSPARENT) return;
663 if (n <= 0) return;
664
665 //Check, if scaling is necessary
666 bool doScale(true);
667 long val(10);
668 if (!xoffset)
669 if (!yoffset)
670 if (XLOG2DEV(val)==val)
671 if (YLOG2DEV(val)==val)
672 doScale = false;
673
674 GdkPoint *gpts = NULL;
675
676 if (doScale){
677 gpts = new GdkPoint[n];
678 if (! gpts)
679 {
680 wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
681 return;
682 }
683
684 for (int i = 0; i < n; i++)
685 {
686 wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
687 wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
688
689 CalcBoundingBox( x1 + xoffset, y1 + yoffset );
690
691 gpts[i].x = x1;
692 gpts[i].y = y1;
693 }
694 }
695 else {
696 for (int i = 0; i < n; i++) {
697 CalcBoundingBox( points[i].x, points[i].y );
698 }
699
700 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
701 gpts = reinterpret_cast<GdkPoint*>(points);
702 }
703
704 if (m_window)
705 gdk_draw_lines( m_window, m_penGC, gpts, n);
706
707 if (doScale)
708 delete[] gpts;
709 }
710
711 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
712 {
713 wxCHECK_RET( Ok(), wxT("invalid window dc") );
714
715 if (n <= 0) return;
716
717 //Check, if scaling is necessary
718 bool doScale(true);
719 long val(10);
720 if (!xoffset)
721 if (!yoffset)
722 if (XLOG2DEV(val)==val)
723 if (YLOG2DEV(val)==val){
724 doScale = false;
725 }
726
727 GdkPoint *gdkpoints = NULL;
728
729 if (doScale){
730 gdkpoints = new GdkPoint[n+1]; //FIXME: Why the "+1"
731
732 int i;
733 for (i = 0 ; i < n ; i++)
734 {
735 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
736 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
737
738 CalcBoundingBox( points[i].x + xoffset, points[i].y + yoffset );
739 }
740 }
741 else {
742 int i(0);
743 for (; i < n ; ++i) {
744 CalcBoundingBox( points[i].x, points[i].y );
745 }
746 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
747 gdkpoints = reinterpret_cast<GdkPoint*> (points);
748 }
749
750 if (m_window)
751 {
752 //I think wxSOLID is the most often used style (it is for me),
753 //so I put it in front of the if ... ifelse's
754 if (m_brush.GetStyle() == wxSOLID)
755 {
756 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
757 }else
758 if (m_brush.GetStyle() != wxTRANSPARENT)
759 {
760 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
761 {
762 gdk_gc_set_ts_origin( m_textGC,
763 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
764 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
765 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
766 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
767 } else
768 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
769 {
770 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
771 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
772 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
773 } else
774 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
775 {
776 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
777 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
778 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
779 } else
780 if (m_brush.GetStyle() == wxSTIPPLE)
781 {
782 gdk_gc_set_ts_origin( m_brushGC,
783 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
784 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
785 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
786 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
787 }
788 else
789 {
790 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
791 }
792 }
793
794 if (m_pen.GetStyle() != wxTRANSPARENT)
795 {
796 /*
797 for (i = 0 ; i < n ; i++)
798 {
799 gdk_draw_line( m_window, m_penGC,
800 gdkpoints[i%n].x,
801 gdkpoints[i%n].y,
802 gdkpoints[(i+1)%n].x,
803 gdkpoints[(i+1)%n].y);
804 }
805 */
806 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
807
808 }
809 }
810
811 if (doScale)
812 delete[] gdkpoints;
813 }
814
815 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
816 {
817 wxCHECK_RET( Ok(), wxT("invalid window dc") );
818
819 wxCoord xx = XLOG2DEV(x);
820 wxCoord yy = YLOG2DEV(y);
821 wxCoord ww = m_signX * XLOG2DEVREL(width);
822 wxCoord hh = m_signY * YLOG2DEVREL(height);
823
824 // CMB: draw nothing if transformed w or h is 0
825 if (ww == 0 || hh == 0) return;
826
827 // CMB: handle -ve width and/or height
828 if (ww < 0) { ww = -ww; xx = xx - ww; }
829 if (hh < 0) { hh = -hh; yy = yy - hh; }
830
831 if (m_window)
832 {
833 if (m_brush.GetStyle() != wxTRANSPARENT)
834 {
835 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
836 {
837 gdk_gc_set_ts_origin( m_textGC,
838 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
839 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
840 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
841 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
842 } else
843 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
844 {
845 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
846 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
847 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
848 } else
849 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
850 {
851 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
852 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
853 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
854 } else
855 if (m_brush.GetStyle() == wxSTIPPLE)
856 {
857 gdk_gc_set_ts_origin( m_brushGC,
858 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
859 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
860 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
861 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
862 }
863 else
864 {
865 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
866 }
867 }
868
869 if (m_pen.GetStyle() != wxTRANSPARENT)
870 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
871 }
872
873 CalcBoundingBox( x, y );
874 CalcBoundingBox( x + width, y + height );
875 }
876
877 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
878 {
879 wxCHECK_RET( Ok(), wxT("invalid window dc") );
880
881 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
882
883 wxCoord xx = XLOG2DEV(x);
884 wxCoord yy = YLOG2DEV(y);
885 wxCoord ww = m_signX * XLOG2DEVREL(width);
886 wxCoord hh = m_signY * YLOG2DEVREL(height);
887 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
888
889 // CMB: handle -ve width and/or height
890 if (ww < 0) { ww = -ww; xx = xx - ww; }
891 if (hh < 0) { hh = -hh; yy = yy - hh; }
892
893 // CMB: if radius is zero use DrawRectangle() instead to avoid
894 // X drawing errors with small radii
895 if (rr == 0)
896 {
897 DrawRectangle( x, y, width, height );
898 return;
899 }
900
901 // CMB: draw nothing if transformed w or h is 0
902 if (ww == 0 || hh == 0) return;
903
904 // CMB: adjust size if outline is drawn otherwise the result is
905 // 1 pixel too wide and high
906 if (m_pen.GetStyle() != wxTRANSPARENT)
907 {
908 ww--;
909 hh--;
910 }
911
912 if (m_window)
913 {
914 // CMB: ensure dd is not larger than rectangle otherwise we
915 // get an hour glass shape
916 wxCoord dd = 2 * rr;
917 if (dd > ww) dd = ww;
918 if (dd > hh) dd = hh;
919 rr = dd / 2;
920
921 if (m_brush.GetStyle() != wxTRANSPARENT)
922 {
923 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
924 {
925 gdk_gc_set_ts_origin( m_textGC,
926 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
927 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
928 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
929 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
930 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
931 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
932 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
934 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
935 } else
936 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
937 {
938 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
939 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
940 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
941 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
942 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
945 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
946 } else
947 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
948 {
949 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
950 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
951 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
952 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
953 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
954 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
956 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
957 } else
958 if (m_brush.GetStyle() == wxSTIPPLE)
959 {
960 gdk_gc_set_ts_origin( m_brushGC,
961 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
962 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
963 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
964 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
965 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
966 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
967 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
969 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
970 }
971 else
972 {
973 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
974 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
975 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
976 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
977 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
979 }
980 }
981
982 if (m_pen.GetStyle() != wxTRANSPARENT)
983 {
984 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
985 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
986 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
987 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
988 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
989 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
990 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
992 }
993 }
994
995 // this ignores the radius
996 CalcBoundingBox( x, y );
997 CalcBoundingBox( x + width, y + height );
998 }
999
1000 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1001 {
1002 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1003
1004 wxCoord xx = XLOG2DEV(x);
1005 wxCoord yy = YLOG2DEV(y);
1006 wxCoord ww = m_signX * XLOG2DEVREL(width);
1007 wxCoord hh = m_signY * YLOG2DEVREL(height);
1008
1009 // CMB: handle -ve width and/or height
1010 if (ww < 0) { ww = -ww; xx = xx - ww; }
1011 if (hh < 0) { hh = -hh; yy = yy - hh; }
1012
1013 if (m_window)
1014 {
1015 if (m_brush.GetStyle() != wxTRANSPARENT)
1016 {
1017 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1018 {
1019 gdk_gc_set_ts_origin( m_textGC,
1020 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1021 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1022 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1023 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1024 } else
1025 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1026 {
1027 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1028 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1029 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1030 } else
1031 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1032 {
1033 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1034 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1035 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1036 } else
1037 if (m_brush.GetStyle() == wxSTIPPLE)
1038 {
1039 gdk_gc_set_ts_origin( m_brushGC,
1040 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1041 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1042 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1043 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1044 }
1045 else
1046 {
1047 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1048 }
1049 }
1050
1051 if (m_pen.GetStyle() != wxTRANSPARENT)
1052 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1053 }
1054
1055 CalcBoundingBox( x, y );
1056 CalcBoundingBox( x + width, y + height );
1057 }
1058
1059 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1060 {
1061 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1062 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1063 }
1064
1065 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1066 wxCoord x, wxCoord y,
1067 bool useMask )
1068 {
1069 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1070
1071 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1072
1073 bool is_mono = bitmap.GetDepth() == 1;
1074
1075 // scale/translate size and position
1076 int xx = XLOG2DEV(x);
1077 int yy = YLOG2DEV(y);
1078
1079 int w = bitmap.GetWidth();
1080 int h = bitmap.GetHeight();
1081
1082 CalcBoundingBox( x, y );
1083 CalcBoundingBox( x + w, y + h );
1084
1085 if (!m_window) return;
1086
1087 int ww = XLOG2DEVREL(w);
1088 int hh = YLOG2DEVREL(h);
1089
1090 // compare to current clipping region
1091 if (!m_currentClippingRegion.IsNull())
1092 {
1093 wxRegion tmp( xx,yy,ww,hh );
1094 tmp.Intersect( m_currentClippingRegion );
1095 if (tmp.IsEmpty())
1096 return;
1097 }
1098
1099 // scale bitmap if required
1100 wxBitmap use_bitmap = bitmap;
1101 if ((w != ww) || (h != hh))
1102 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1103
1104 #if !GTK_CHECK_VERSION(2,2,0)
1105 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1106 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1107 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1108 // and also creates the mask as a side-effect:
1109 use_bitmap.GetPixmap();
1110 #endif
1111
1112 // apply mask if any
1113 GdkBitmap *mask = (GdkBitmap *) NULL;
1114 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1115
1116 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1117
1118 if (useMask && mask)
1119 {
1120 if (!m_currentClippingRegion.IsNull())
1121 {
1122 GdkColor col;
1123 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1124 GdkGC *gc = gdk_gc_new( new_mask );
1125 col.pixel = 0;
1126 gdk_gc_set_foreground( gc, &col );
1127 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1128 col.pixel = 0;
1129 gdk_gc_set_background( gc, &col );
1130 col.pixel = 1;
1131 gdk_gc_set_foreground( gc, &col );
1132 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1133 gdk_gc_set_clip_origin( gc, -xx, -yy );
1134 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1135 gdk_gc_set_stipple( gc, mask );
1136 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1137 g_object_unref (gc);
1138 }
1139
1140 if (is_mono)
1141 {
1142 if (new_mask)
1143 gdk_gc_set_clip_mask( m_textGC, new_mask );
1144 else
1145 gdk_gc_set_clip_mask( m_textGC, mask );
1146 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1147 }
1148 else
1149 {
1150 if (new_mask)
1151 gdk_gc_set_clip_mask( m_penGC, new_mask );
1152 else
1153 gdk_gc_set_clip_mask( m_penGC, mask );
1154 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1155 }
1156 }
1157
1158 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1159 // drawing a mono-bitmap (XBitmap) we use the current text GC
1160 if (is_mono)
1161 {
1162 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1163 GdkGC *gc = gdk_gc_new( bitmap2 );
1164 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1165 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1166 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1167
1168 gdk_draw_drawable( m_window, m_textGC, bitmap2, 0, 0, xx, yy, -1, -1 );
1169
1170 g_object_unref (bitmap2);
1171 g_object_unref (gc);
1172 }
1173 else
1174 {
1175 #if GTK_CHECK_VERSION(2,2,0)
1176 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1177 {
1178 gdk_draw_pixbuf(m_window, m_penGC,
1179 use_bitmap.GetPixbuf(),
1180 0, 0, xx, yy, -1, -1,
1181 GDK_RGB_DITHER_NORMAL, xx, yy);
1182 }
1183 else
1184 #endif
1185 {
1186 gdk_draw_drawable(m_window, m_penGC,
1187 use_bitmap.GetPixmap(),
1188 0, 0, xx, yy, -1, -1);
1189 }
1190 }
1191
1192 // remove mask again if any
1193 if (useMask && mask)
1194 {
1195 if (is_mono)
1196 {
1197 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1198 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1199 if (!m_currentClippingRegion.IsNull())
1200 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1201 }
1202 else
1203 {
1204 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1205 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1206 if (!m_currentClippingRegion.IsNull())
1207 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1208 }
1209 }
1210
1211 if (new_mask)
1212 g_object_unref (new_mask);
1213 }
1214
1215 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1216 wxCoord width, wxCoord height,
1217 wxDC *source,
1218 wxCoord xsrc, wxCoord ysrc,
1219 int logical_func,
1220 bool useMask,
1221 wxCoord xsrcMask, wxCoord ysrcMask )
1222 {
1223 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1224
1225 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1226
1227 if (!m_window) return false;
1228
1229 // transform the source DC coords to the device ones
1230 xsrc = source->XLOG2DEV(xsrc);
1231 ysrc = source->YLOG2DEV(ysrc);
1232
1233 wxClientDC *srcDC = (wxClientDC*)source;
1234 wxMemoryDC *memDC = (wxMemoryDC*)source;
1235
1236 bool use_bitmap_method = false;
1237 bool is_mono = false;
1238
1239 if (xsrcMask == -1 && ysrcMask == -1)
1240 {
1241 xsrcMask = xsrc;
1242 ysrcMask = ysrc;
1243 }
1244
1245 if (srcDC->m_isMemDC)
1246 {
1247 if (!memDC->m_selected.Ok()) return false;
1248
1249 is_mono = (memDC->m_selected.GetDepth() == 1);
1250
1251 // we use the "XCopyArea" way to copy a memory dc into
1252 // a different window if the memory dc BOTH
1253 // a) doesn't have any mask or its mask isn't used
1254 // b) it is clipped
1255 // c) is not 1-bit
1256
1257 if (useMask && (memDC->m_selected.GetMask()))
1258 {
1259 // we HAVE TO use the direct way for memory dcs
1260 // that have mask since the XCopyArea doesn't know
1261 // about masks
1262 use_bitmap_method = true;
1263 }
1264 else if (is_mono)
1265 {
1266 // we HAVE TO use the direct way for memory dcs
1267 // that are bitmaps because XCopyArea doesn't cope
1268 // with different bit depths
1269 use_bitmap_method = true;
1270 }
1271 else if ((xsrc == 0) && (ysrc == 0) &&
1272 (width == memDC->m_selected.GetWidth()) &&
1273 (height == memDC->m_selected.GetHeight()))
1274 {
1275 // we SHOULD use the direct way if all of the bitmap
1276 // in the memory dc is copied in which case XCopyArea
1277 // wouldn't be able able to boost performace by reducing
1278 // the area to be scaled
1279 use_bitmap_method = true;
1280 }
1281 else
1282 {
1283 use_bitmap_method = false;
1284 }
1285 }
1286
1287 CalcBoundingBox( xdest, ydest );
1288 CalcBoundingBox( xdest + width, ydest + height );
1289
1290 // scale/translate size and position
1291 wxCoord xx = XLOG2DEV(xdest);
1292 wxCoord yy = YLOG2DEV(ydest);
1293
1294 wxCoord ww = XLOG2DEVREL(width);
1295 wxCoord hh = YLOG2DEVREL(height);
1296
1297 // compare to current clipping region
1298 if (!m_currentClippingRegion.IsNull())
1299 {
1300 wxRegion tmp( xx,yy,ww,hh );
1301 tmp.Intersect( m_currentClippingRegion );
1302 if (tmp.IsEmpty())
1303 return true;
1304 }
1305
1306 int old_logical_func = m_logicalFunction;
1307 SetLogicalFunction( logical_func );
1308
1309 if (use_bitmap_method)
1310 {
1311 // scale/translate bitmap size
1312 wxCoord bm_width = memDC->m_selected.GetWidth();
1313 wxCoord bm_height = memDC->m_selected.GetHeight();
1314
1315 // Get clip coords for the bitmap. If we don't
1316 // use wxBitmap::Rescale(), which can clip the
1317 // bitmap, these are the same as the original
1318 // coordinates
1319 wxCoord cx = xx;
1320 wxCoord cy = yy;
1321 wxCoord cw = ww;
1322 wxCoord ch = hh;
1323
1324 // interpret userscale of src too
1325 double xsc,ysc;
1326 memDC->GetUserScale(&xsc,&ysc);
1327 bm_width = (int) (bm_width / xsc);
1328 bm_height = (int) (bm_height / ysc);
1329
1330 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1331 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1332
1333 // Scale bitmap if required
1334 wxBitmap use_bitmap;
1335 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1336 {
1337 // This indicates that the blitting code below will get
1338 // a clipped bitmap and therefore needs to move the origin
1339 // accordingly
1340 wxRegion tmp( xx,yy,ww,hh );
1341 tmp.Intersect( m_currentClippingRegion );
1342 tmp.GetBox(cx,cy,cw,ch);
1343
1344 // Scale and clipped bitmap
1345 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1346 }
1347 else
1348 {
1349 // Don't scale bitmap
1350 use_bitmap = memDC->m_selected;
1351 }
1352
1353 // apply mask if any
1354 GdkBitmap *mask = (GdkBitmap *) NULL;
1355 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1356
1357 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1358
1359 if (useMask && mask)
1360 {
1361 if (!m_currentClippingRegion.IsNull())
1362 {
1363 GdkColor col;
1364 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1365 GdkGC *gc = gdk_gc_new( new_mask );
1366 col.pixel = 0;
1367 gdk_gc_set_foreground( gc, &col );
1368 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1369 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1370 col.pixel = 0;
1371 gdk_gc_set_background( gc, &col );
1372 col.pixel = 1;
1373 gdk_gc_set_foreground( gc, &col );
1374 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1375 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1376 gdk_gc_set_clip_origin( gc, -cx, -cy );
1377 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1378 gdk_gc_set_stipple( gc, mask );
1379 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1380 g_object_unref (gc);
1381 }
1382
1383 if (is_mono)
1384 {
1385 if (new_mask)
1386 {
1387 gdk_gc_set_clip_mask( m_textGC, new_mask );
1388 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1389 }
1390 else
1391 {
1392 gdk_gc_set_clip_mask( m_textGC, mask );
1393 gdk_gc_set_clip_origin( m_textGC, cx-xsrcMask, cy-ysrcMask );
1394 }
1395 }
1396 else
1397 {
1398 if (new_mask)
1399 {
1400 gdk_gc_set_clip_mask( m_penGC, new_mask );
1401 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1402 }
1403 else
1404 {
1405 gdk_gc_set_clip_mask( m_penGC, mask );
1406 gdk_gc_set_clip_origin( m_penGC, cx-xsrcMask, cy-ysrcMask );
1407 }
1408 }
1409 }
1410
1411 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1412 // drawing a mono-bitmap (XBitmap) we use the current text GC
1413
1414 if (is_mono)
1415 {
1416 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1417 GdkGC *gc = gdk_gc_new( bitmap );
1418 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1419 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1420 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1421
1422 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1423
1424 g_object_unref (bitmap);
1425 g_object_unref (gc);
1426 }
1427 else
1428 {
1429 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1430 gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1431 }
1432
1433 // remove mask again if any
1434 if (useMask && mask)
1435 {
1436 if (is_mono)
1437 {
1438 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1439 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1440 if (!m_currentClippingRegion.IsNull())
1441 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1442 }
1443 else
1444 {
1445 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1446 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1447 if (!m_currentClippingRegion.IsNull())
1448 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1449 }
1450 }
1451
1452 if (new_mask)
1453 g_object_unref (new_mask);
1454 }
1455 else // use_bitmap_method
1456 {
1457 if ((width != ww) || (height != hh))
1458 {
1459 // get clip coords
1460 wxRegion tmp( xx,yy,ww,hh );
1461 tmp.Intersect( m_currentClippingRegion );
1462 wxCoord cx,cy,cw,ch;
1463 tmp.GetBox(cx,cy,cw,ch);
1464
1465 // rescale bitmap
1466 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1467
1468 // draw scaled bitmap
1469 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1470 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1471 }
1472 else
1473 {
1474 // No scaling and not a memory dc with a mask either
1475
1476 // copy including child window contents
1477 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1478 gdk_draw_drawable( m_window, m_penGC,
1479 srcDC->GetWindow(),
1480 xsrc, ysrc, xx, yy,
1481 width, height );
1482 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1483 }
1484 }
1485
1486 SetLogicalFunction( old_logical_func );
1487
1488 return true;
1489 }
1490
1491 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1492 {
1493 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1494
1495 if (!m_window) return;
1496
1497 if (text.empty()) return;
1498
1499 x = XLOG2DEV(x);
1500 y = YLOG2DEV(y);
1501
1502 wxCHECK_RET( m_context, wxT("no Pango context") );
1503 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1504 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1505
1506 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1507
1508 const wxCharBuffer data = wxGTK_CONV( text );
1509 if ( !data )
1510 return;
1511 const size_t datalen = strlen(data);
1512 pango_layout_set_text( m_layout, data, datalen);
1513
1514 if (underlined)
1515 {
1516 PangoAttrList *attrs = pango_attr_list_new();
1517 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1518 a->start_index = 0;
1519 a->end_index = datalen;
1520 pango_attr_list_insert(attrs, a);
1521 pango_layout_set_attributes(m_layout, attrs);
1522 pango_attr_list_unref(attrs);
1523 }
1524
1525 int w,h;
1526
1527 if (fabs(m_scaleY - 1.0) > 0.00001)
1528 {
1529 // If there is a user or actually any scale applied to
1530 // the device context, scale the font.
1531
1532 // scale font description
1533 gint oldSize = pango_font_description_get_size( m_fontdesc );
1534 double size = oldSize;
1535 size = size * m_scaleY;
1536 pango_font_description_set_size( m_fontdesc, (gint)size );
1537
1538 // actually apply scaled font
1539 pango_layout_set_font_description( m_layout, m_fontdesc );
1540
1541 pango_layout_get_pixel_size( m_layout, &w, &h );
1542 if ( m_backgroundMode == wxSOLID )
1543 {
1544 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1545 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1546 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1547 }
1548
1549 // Draw layout.
1550 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1551
1552 // reset unscaled size
1553 pango_font_description_set_size( m_fontdesc, oldSize );
1554
1555 // actually apply unscaled font
1556 pango_layout_set_font_description( m_layout, m_fontdesc );
1557 }
1558 else
1559 {
1560 pango_layout_get_pixel_size( m_layout, &w, &h );
1561 if ( m_backgroundMode == wxSOLID )
1562 {
1563 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1564 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1565 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1566 }
1567 // Draw layout.
1568 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1569 }
1570
1571 if (underlined)
1572 {
1573 // undo underline attributes setting:
1574 pango_layout_set_attributes(m_layout, NULL);
1575 }
1576
1577 wxCoord width = w;
1578 wxCoord height = h;
1579
1580 width = wxCoord(width / m_scaleX);
1581 height = wxCoord(height / m_scaleY);
1582 CalcBoundingBox (x + width, y + height);
1583 CalcBoundingBox (x, y);
1584 }
1585
1586
1587 // TODO: There is an example of rotating text with GTK2 that would probably be
1588 // a better approach here:
1589 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1590
1591 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1592 {
1593 if (!m_window || text.empty())
1594 return;
1595
1596 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1597
1598 if ( wxIsNullDouble(angle) )
1599 {
1600 DrawText(text, x, y);
1601 return;
1602 }
1603
1604 wxCoord w;
1605 wxCoord h;
1606
1607 // TODO: implement later without GdkFont for GTK 2.0
1608 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1609
1610 // draw the string normally
1611 wxBitmap src(w, h);
1612 wxMemoryDC dc;
1613 dc.SelectObject(src);
1614 dc.SetFont(GetFont());
1615 dc.SetBackground(*wxBLACK_BRUSH);
1616 dc.SetBrush(*wxBLACK_BRUSH);
1617 dc.Clear();
1618 dc.SetTextForeground( *wxWHITE );
1619 dc.DrawText(text, 0, 0);
1620 dc.SelectObject(wxNullBitmap);
1621
1622 // Calculate the size of the rotated bounding box.
1623 double rad = DegToRad(angle);
1624 double dx = cos(rad),
1625 dy = sin(rad);
1626
1627 // the rectngle vertices are counted clockwise with the first one being at
1628 // (0, 0) (or, rather, at (x, y))
1629 double x2 = w*dx,
1630 y2 = -w*dy; // y axis points to the bottom, hence minus
1631 double x4 = h*dy,
1632 y4 = h*dx;
1633 double x3 = x4 + x2,
1634 y3 = y4 + y2;
1635
1636 // calc max and min
1637 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1638 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1639 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1640 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1641
1642
1643 wxImage image = src.ConvertToImage();
1644
1645 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1646 m_textForegroundColour.Green(),
1647 m_textForegroundColour.Blue() );
1648 image = image.Rotate( rad, wxPoint(0,0) );
1649
1650 int i_angle = (int) angle;
1651 i_angle = i_angle % 360;
1652 if (i_angle < 0)
1653 i_angle += 360;
1654 int xoffset = 0;
1655 if ((i_angle >= 90.0) && (i_angle < 270.0))
1656 xoffset = image.GetWidth();
1657 int yoffset = 0;
1658 if ((i_angle >= 0.0) && (i_angle < 180.0))
1659 yoffset = image.GetHeight();
1660
1661 if ((i_angle >= 0) && (i_angle < 90))
1662 yoffset -= (int)( cos(rad)*h );
1663 if ((i_angle >= 90) && (i_angle < 180))
1664 xoffset -= (int)( sin(rad)*h );
1665 if ((i_angle >= 180) && (i_angle < 270))
1666 yoffset -= (int)( cos(rad)*h );
1667 if ((i_angle >= 270) && (i_angle < 360))
1668 xoffset -= (int)( sin(rad)*h );
1669
1670 int i_x = x - xoffset;
1671 int i_y = y - yoffset;
1672
1673 src = image;
1674 DoDrawBitmap( src, i_x, i_y, true );
1675
1676
1677 // it would be better to draw with non underlined font and draw the line
1678 // manually here (it would be more straight...)
1679 #if 0
1680 if ( m_font.GetUnderlined() )
1681 {
1682 gdk_draw_line( m_window, m_textGC,
1683 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1684 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1685 }
1686 #endif // 0
1687
1688 // update the bounding box
1689 CalcBoundingBox(x + minX, y + minY);
1690 CalcBoundingBox(x + maxX, y + maxY);
1691 }
1692
1693 void wxWindowDC::DoGetTextExtent(const wxString &string,
1694 wxCoord *width, wxCoord *height,
1695 wxCoord *descent, wxCoord *externalLeading,
1696 wxFont *theFont) const
1697 {
1698 if ( width )
1699 *width = 0;
1700 if ( height )
1701 *height = 0;
1702 if ( descent )
1703 *descent = 0;
1704 if ( externalLeading )
1705 *externalLeading = 0;
1706
1707 if (string.empty())
1708 return;
1709
1710 // ensure that theFont is always non-NULL
1711 if ( !theFont || !theFont->Ok() )
1712 theFont = wx_const_cast(wxFont *, &m_font);
1713
1714 // and use it if it's valid
1715 if ( theFont->Ok() )
1716 {
1717 pango_layout_set_font_description
1718 (
1719 m_layout,
1720 theFont->GetNativeFontInfo()->description
1721 );
1722 }
1723
1724 // Set layout's text
1725 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1726 if ( !dataUTF8 )
1727 {
1728 // hardly ideal, but what else can we do if conversion failed?
1729 return;
1730 }
1731
1732 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1733
1734 if (descent)
1735 {
1736 int h;
1737 pango_layout_get_pixel_size( m_layout, width, &h );
1738 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1739 int baseline = pango_layout_iter_get_baseline(iter);
1740 pango_layout_iter_free(iter);
1741 *descent = h - PANGO_PIXELS(baseline);
1742
1743 if (height)
1744 *height = (wxCoord) h;
1745 }
1746 else
1747 {
1748 pango_layout_get_pixel_size( m_layout, width, height );
1749 }
1750
1751 // Reset old font description
1752 if (theFont)
1753 pango_layout_set_font_description( m_layout, m_fontdesc );
1754 }
1755
1756 wxCoord wxWindowDC::GetCharWidth() const
1757 {
1758 pango_layout_set_text( m_layout, "H", 1 );
1759 int w;
1760 pango_layout_get_pixel_size( m_layout, &w, NULL );
1761 return w;
1762 }
1763
1764 wxCoord wxWindowDC::GetCharHeight() const
1765 {
1766 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, NULL);
1767 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1768 }
1769
1770 void wxWindowDC::Clear()
1771 {
1772 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1773
1774 if (!m_window) return;
1775
1776 // VZ: the code below results in infinite recursion and crashes when
1777 // dc.Clear() is done from OnPaint() so I disable it for now.
1778 // I don't know what the correct fix is but Clear() surely should not
1779 // reenter OnPaint()!
1780 #if 0
1781 /* - we either are a memory dc or have a window as the
1782 owner. anything else shouldn't happen.
1783 - we don't use gdk_window_clear() as we don't set
1784 the window's background colour anymore. it is too
1785 much pain to keep the DC's and the window's back-
1786 ground colour in synch. */
1787
1788 if (m_owner)
1789 {
1790 m_owner->Clear();
1791 return;
1792 }
1793
1794 if (m_isMemDC)
1795 {
1796 int width,height;
1797 GetSize( &width, &height );
1798 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1799 return;
1800 }
1801 #else // 1
1802 int width,height;
1803 GetSize( &width, &height );
1804 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1805 #endif // 0/1
1806 }
1807
1808 void wxWindowDC::SetFont( const wxFont &font )
1809 {
1810 m_font = font;
1811
1812 if (m_font.Ok())
1813 {
1814 if (m_fontdesc)
1815 pango_font_description_free( m_fontdesc );
1816
1817 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1818
1819
1820 if (m_owner)
1821 {
1822 PangoContext *oldContext = m_context;
1823
1824 m_context = m_owner->GtkGetPangoDefaultContext();
1825
1826 // If we switch back/forth between different contexts
1827 // we also have to create a new layout. I think so,
1828 // at least, and it doesn't hurt to do it.
1829 if (oldContext != m_context)
1830 {
1831 if (m_layout)
1832 g_object_unref (m_layout);
1833
1834 m_layout = pango_layout_new( m_context );
1835 }
1836 }
1837
1838 pango_layout_set_font_description( m_layout, m_fontdesc );
1839 }
1840 }
1841
1842 void wxWindowDC::SetPen( const wxPen &pen )
1843 {
1844 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1845
1846 if (m_pen == pen) return;
1847
1848 m_pen = pen;
1849
1850 if (!m_pen.Ok()) return;
1851
1852 if (!m_window) return;
1853
1854 gint width = m_pen.GetWidth();
1855 if (width <= 0)
1856 {
1857 // CMB: if width is non-zero scale it with the dc
1858 width = 1;
1859 }
1860 else
1861 {
1862 // X doesn't allow different width in x and y and so we take
1863 // the average
1864 double w = 0.5 +
1865 ( fabs((double) XLOG2DEVREL(width)) +
1866 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1867 width = (int)w;
1868 if ( !width )
1869 {
1870 // width can't be 0 or an internal GTK error occurs inside
1871 // gdk_gc_set_dashes() below
1872 width = 1;
1873 }
1874 }
1875
1876 static const wxGTKDash dotted[] = {1, 1};
1877 static const wxGTKDash short_dashed[] = {2, 2};
1878 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1879 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1880
1881 // We express dash pattern in pen width unit, so we are
1882 // independent of zoom factor and so on...
1883 int req_nb_dash;
1884 const wxGTKDash *req_dash;
1885
1886 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1887 switch (m_pen.GetStyle())
1888 {
1889 case wxUSER_DASH:
1890 {
1891 lineStyle = GDK_LINE_ON_OFF_DASH;
1892 req_nb_dash = m_pen.GetDashCount();
1893 req_dash = (wxGTKDash*)m_pen.GetDash();
1894 break;
1895 }
1896 case wxDOT:
1897 {
1898 lineStyle = GDK_LINE_ON_OFF_DASH;
1899 req_nb_dash = 2;
1900 req_dash = dotted;
1901 break;
1902 }
1903 case wxLONG_DASH:
1904 {
1905 lineStyle = GDK_LINE_ON_OFF_DASH;
1906 req_nb_dash = 2;
1907 req_dash = wxCoord_dashed;
1908 break;
1909 }
1910 case wxSHORT_DASH:
1911 {
1912 lineStyle = GDK_LINE_ON_OFF_DASH;
1913 req_nb_dash = 2;
1914 req_dash = short_dashed;
1915 break;
1916 }
1917 case wxDOT_DASH:
1918 {
1919 // lineStyle = GDK_LINE_DOUBLE_DASH;
1920 lineStyle = GDK_LINE_ON_OFF_DASH;
1921 req_nb_dash = 4;
1922 req_dash = dotted_dashed;
1923 break;
1924 }
1925
1926 case wxTRANSPARENT:
1927 case wxSTIPPLE_MASK_OPAQUE:
1928 case wxSTIPPLE:
1929 case wxSOLID:
1930 default:
1931 {
1932 lineStyle = GDK_LINE_SOLID;
1933 req_dash = (wxGTKDash*)NULL;
1934 req_nb_dash = 0;
1935 break;
1936 }
1937 }
1938
1939 if (req_dash && req_nb_dash)
1940 {
1941 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1942 if (real_req_dash)
1943 {
1944 for (int i = 0; i < req_nb_dash; i++)
1945 real_req_dash[i] = req_dash[i] * width;
1946 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1947 delete[] real_req_dash;
1948 }
1949 else
1950 {
1951 // No Memory. We use non-scaled dash pattern...
1952 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1953 }
1954 }
1955
1956 GdkCapStyle capStyle = GDK_CAP_ROUND;
1957 switch (m_pen.GetCap())
1958 {
1959 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1960 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1961 case wxCAP_ROUND:
1962 default:
1963 {
1964 if (width <= 1)
1965 {
1966 width = 0;
1967 capStyle = GDK_CAP_NOT_LAST;
1968 }
1969 else
1970 {
1971 capStyle = GDK_CAP_ROUND;
1972 }
1973 break;
1974 }
1975 }
1976
1977 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1978 switch (m_pen.GetJoin())
1979 {
1980 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1981 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1982 case wxJOIN_ROUND:
1983 default: { joinStyle = GDK_JOIN_ROUND; break; }
1984 }
1985
1986 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1987
1988 m_pen.GetColour().CalcPixel( m_cmap );
1989 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1990 }
1991
1992 void wxWindowDC::SetBrush( const wxBrush &brush )
1993 {
1994 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1995
1996 if (m_brush == brush) return;
1997
1998 m_brush = brush;
1999
2000 if (!m_brush.Ok()) return;
2001
2002 if (!m_window) return;
2003
2004 m_brush.GetColour().CalcPixel( m_cmap );
2005 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2006
2007 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2008
2009 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2010 {
2011 if (m_brush.GetStipple()->GetDepth() != 1)
2012 {
2013 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2014 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2015 }
2016 else
2017 {
2018 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2019 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2020 }
2021 }
2022
2023 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2024 {
2025 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2026 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2027 }
2028
2029 if (m_brush.IsHatch())
2030 {
2031 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2032 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2033 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2034 }
2035 }
2036
2037 void wxWindowDC::SetBackground( const wxBrush &brush )
2038 {
2039 /* CMB 21/7/98: Added SetBackground. Sets background brush
2040 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2041
2042 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2043
2044 if (m_backgroundBrush == brush) return;
2045
2046 m_backgroundBrush = brush;
2047
2048 if (!m_backgroundBrush.Ok()) return;
2049
2050 if (!m_window) return;
2051
2052 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2053 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2054 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2055 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2056 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2057
2058 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2059
2060 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2061 {
2062 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2063 {
2064 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2065 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2066 }
2067 else
2068 {
2069 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2070 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2071 }
2072 }
2073
2074 if (m_backgroundBrush.IsHatch())
2075 {
2076 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2077 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2078 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2079 }
2080 }
2081
2082 void wxWindowDC::SetLogicalFunction( int function )
2083 {
2084 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2085
2086 if (m_logicalFunction == function)
2087 return;
2088
2089 // VZ: shouldn't this be a CHECK?
2090 if (!m_window)
2091 return;
2092
2093 GdkFunction mode;
2094 switch (function)
2095 {
2096 case wxXOR: mode = GDK_XOR; break;
2097 case wxINVERT: mode = GDK_INVERT; break;
2098 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2099 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2100 case wxCLEAR: mode = GDK_CLEAR; break;
2101 case wxSET: mode = GDK_SET; break;
2102 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2103 case wxAND: mode = GDK_AND; break;
2104 case wxOR: mode = GDK_OR; break;
2105 case wxEQUIV: mode = GDK_EQUIV; break;
2106 case wxNAND: mode = GDK_NAND; break;
2107 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2108 case wxCOPY: mode = GDK_COPY; break;
2109 case wxNO_OP: mode = GDK_NOOP; break;
2110 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2111
2112 // unsupported by GTK
2113 case wxNOR: mode = GDK_COPY; break;
2114 default:
2115 wxFAIL_MSG( wxT("unsupported logical function") );
2116 mode = GDK_COPY;
2117 }
2118
2119 m_logicalFunction = function;
2120
2121 gdk_gc_set_function( m_penGC, mode );
2122 gdk_gc_set_function( m_brushGC, mode );
2123
2124 // to stay compatible with wxMSW, we don't apply ROPs to the text
2125 // operations (i.e. DrawText/DrawRotatedText).
2126 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2127 gdk_gc_set_function( m_textGC, mode );
2128 }
2129
2130 void wxWindowDC::SetTextForeground( const wxColour &col )
2131 {
2132 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2133
2134 // don't set m_textForegroundColour to an invalid colour as we'd crash
2135 // later then (we use m_textForegroundColour.GetColor() without checking
2136 // in a few places)
2137 if ( !col.Ok() || (m_textForegroundColour == col) )
2138 return;
2139
2140 m_textForegroundColour = col;
2141
2142 if ( m_window )
2143 {
2144 m_textForegroundColour.CalcPixel( m_cmap );
2145 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2146 }
2147 }
2148
2149 void wxWindowDC::SetTextBackground( const wxColour &col )
2150 {
2151 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2152
2153 // same as above
2154 if ( !col.Ok() || (m_textBackgroundColour == col) )
2155 return;
2156
2157 m_textBackgroundColour = col;
2158
2159 if ( m_window )
2160 {
2161 m_textBackgroundColour.CalcPixel( m_cmap );
2162 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2163 }
2164 }
2165
2166 void wxWindowDC::SetBackgroundMode( int mode )
2167 {
2168 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2169
2170 m_backgroundMode = mode;
2171
2172 if (!m_window) return;
2173
2174 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2175 // transparent/solid background mode
2176
2177 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2178 {
2179 gdk_gc_set_fill( m_brushGC,
2180 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2181 }
2182 }
2183
2184 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2185 {
2186 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2187 }
2188
2189 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2190 {
2191 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2192
2193 if (!m_window) return;
2194
2195 wxRect rect;
2196 rect.x = XLOG2DEV(x);
2197 rect.y = YLOG2DEV(y);
2198 rect.width = XLOG2DEVREL(width);
2199 rect.height = YLOG2DEVREL(height);
2200
2201 if (!m_currentClippingRegion.IsNull())
2202 m_currentClippingRegion.Intersect( rect );
2203 else
2204 m_currentClippingRegion.Union( rect );
2205
2206 #if USE_PAINT_REGION
2207 if (!m_paintClippingRegion.IsNull())
2208 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2209 #endif
2210
2211 wxCoord xx, yy, ww, hh;
2212 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2213 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2214
2215 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2216 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2217 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2218 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2219 }
2220
2221 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2222 {
2223 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2224
2225 if (region.Empty())
2226 {
2227 DestroyClippingRegion();
2228 return;
2229 }
2230
2231 if (!m_window) return;
2232
2233 if (!m_currentClippingRegion.IsNull())
2234 m_currentClippingRegion.Intersect( region );
2235 else
2236 m_currentClippingRegion.Union( region );
2237
2238 #if USE_PAINT_REGION
2239 if (!m_paintClippingRegion.IsNull())
2240 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2241 #endif
2242
2243 wxCoord xx, yy, ww, hh;
2244 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2245 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2246
2247 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2248 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2249 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2250 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2251 }
2252
2253 void wxWindowDC::DestroyClippingRegion()
2254 {
2255 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2256
2257 wxDC::DestroyClippingRegion();
2258
2259 m_currentClippingRegion.Clear();
2260
2261 #if USE_PAINT_REGION
2262 if (!m_paintClippingRegion.IsEmpty())
2263 m_currentClippingRegion.Union( m_paintClippingRegion );
2264 #endif
2265
2266 if (!m_window) return;
2267
2268 if (m_currentClippingRegion.IsEmpty())
2269 {
2270 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2271 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2272 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2273 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2274 }
2275 else
2276 {
2277 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2278 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2279 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2280 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2281 }
2282 }
2283
2284 void wxWindowDC::Destroy()
2285 {
2286 if (m_penGC) wxFreePoolGC( m_penGC );
2287 m_penGC = (GdkGC*) NULL;
2288 if (m_brushGC) wxFreePoolGC( m_brushGC );
2289 m_brushGC = (GdkGC*) NULL;
2290 if (m_textGC) wxFreePoolGC( m_textGC );
2291 m_textGC = (GdkGC*) NULL;
2292 if (m_bgGC) wxFreePoolGC( m_bgGC );
2293 m_bgGC = (GdkGC*) NULL;
2294 }
2295
2296 void wxWindowDC::ComputeScaleAndOrigin()
2297 {
2298 const wxRealPoint origScale(m_scaleX, m_scaleY);
2299
2300 wxDC::ComputeScaleAndOrigin();
2301
2302 // if scale has changed call SetPen to recalulate the line width
2303 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2304 {
2305 // this is a bit artificial, but we need to force wxDC to think the pen
2306 // has changed
2307 wxPen pen = m_pen;
2308 m_pen = wxNullPen;
2309 SetPen( pen );
2310 }
2311 }
2312
2313 // Resolution in pixels per logical inch
2314 wxSize wxWindowDC::GetPPI() const
2315 {
2316 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2317 }
2318
2319 int wxWindowDC::GetDepth() const
2320 {
2321 return gdk_drawable_get_depth(m_window);
2322 }
2323
2324
2325 //-----------------------------------------------------------------------------
2326 // wxPaintDC
2327 //-----------------------------------------------------------------------------
2328
2329 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2330
2331 // Limit the paint region to the window size. Sometimes
2332 // the paint region is too big, and this risks X11 errors
2333 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2334 {
2335 wxRect originalRect = region.GetBox();
2336 wxRect rect(originalRect);
2337 if (rect.width + rect.x > sz.x)
2338 rect.width = sz.x - rect.x;
2339 if (rect.height + rect.y > sz.y)
2340 rect.height = sz.y - rect.y;
2341 if (rect != originalRect)
2342 {
2343 region = wxRegion(rect);
2344 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2345 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2346 rect.x, rect.y, rect.width, rect.height);
2347 }
2348 }
2349
2350 wxPaintDC::wxPaintDC( wxWindow *win )
2351 : wxClientDC( win )
2352 {
2353 #if USE_PAINT_REGION
2354 if (!win->m_clipPaintRegion)
2355 return;
2356
2357 wxSize sz = win->GetSize();
2358 m_paintClippingRegion = win->GetUpdateRegion();
2359 wxLimitRegionToSize(m_paintClippingRegion, sz);
2360
2361 GdkRegion *region = m_paintClippingRegion.GetRegion();
2362 if ( region )
2363 {
2364 m_currentClippingRegion.Union( m_paintClippingRegion );
2365 wxLimitRegionToSize(m_currentClippingRegion, sz);
2366
2367 if (sz.x <= 0 || sz.y <= 0)
2368 return ;
2369
2370 gdk_gc_set_clip_region( m_penGC, region );
2371 gdk_gc_set_clip_region( m_brushGC, region );
2372 gdk_gc_set_clip_region( m_textGC, region );
2373 gdk_gc_set_clip_region( m_bgGC, region );
2374 }
2375 #endif // USE_PAINT_REGION
2376 }
2377
2378 //-----------------------------------------------------------------------------
2379 // wxClientDC
2380 //-----------------------------------------------------------------------------
2381
2382 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2383
2384 wxClientDC::wxClientDC( wxWindow *win )
2385 : wxWindowDC( win )
2386 {
2387 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2388
2389 #ifdef __WXUNIVERSAL__
2390 wxPoint ptOrigin = win->GetClientAreaOrigin();
2391 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2392 wxSize size = win->GetClientSize();
2393 SetClippingRegion(wxPoint(0, 0), size);
2394 #endif // __WXUNIVERSAL__
2395 }
2396
2397 void wxClientDC::DoGetSize(int *width, int *height) const
2398 {
2399 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2400
2401 m_owner->GetClientSize( width, height );
2402 }
2403
2404 // ----------------------------------------------------------------------------
2405 // wxDCModule
2406 // ----------------------------------------------------------------------------
2407
2408 class wxDCModule : public wxModule
2409 {
2410 public:
2411 bool OnInit();
2412 void OnExit();
2413
2414 private:
2415 DECLARE_DYNAMIC_CLASS(wxDCModule)
2416 };
2417
2418 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2419
2420 bool wxDCModule::OnInit()
2421 {
2422 wxInitGCPool();
2423 return true;
2424 }
2425
2426 void wxDCModule::OnExit()
2427 {
2428 wxCleanUpGCPool();
2429 }
wxWidgets (Impactor)