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Compilation fix for !WXWN_COMPATIBILITY_2_4.
[wxWidgets.git] / src / gtk / 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 for (i = 0 ; i < n ; i++)
777 {
778 gdk_draw_line( m_window, m_penGC,
779 gdkpoints[i%n].x,
780 gdkpoints[i%n].y,
781 gdkpoints[(i+1)%n].x,
782 gdkpoints[(i+1)%n].y);
783 }
784 }
785 }
786
787 delete[] gdkpoints;
788 }
789
790 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
791 {
792 wxCHECK_RET( Ok(), wxT("invalid window dc") );
793
794 wxCoord xx = XLOG2DEV(x);
795 wxCoord yy = YLOG2DEV(y);
796 wxCoord ww = m_signX * XLOG2DEVREL(width);
797 wxCoord hh = m_signY * YLOG2DEVREL(height);
798
799 // CMB: draw nothing if transformed w or h is 0
800 if (ww == 0 || hh == 0) return;
801
802 // CMB: handle -ve width and/or height
803 if (ww < 0) { ww = -ww; xx = xx - ww; }
804 if (hh < 0) { hh = -hh; yy = yy - hh; }
805
806 if (m_window)
807 {
808 if (m_brush.GetStyle() != wxTRANSPARENT)
809 {
810 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
811 {
812 gdk_gc_set_ts_origin( m_textGC,
813 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
814 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
815 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
816 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
817 } else
818 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
819 {
820 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
821 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
822 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
823 } else
824 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
825 {
826 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
827 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
828 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
829 } else
830 if (m_brush.GetStyle() == wxSTIPPLE)
831 {
832 gdk_gc_set_ts_origin( m_brushGC,
833 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
834 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
835 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
836 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
837 }
838 else
839 {
840 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
841 }
842 }
843
844 if (m_pen.GetStyle() != wxTRANSPARENT)
845 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
846 }
847
848 CalcBoundingBox( x, y );
849 CalcBoundingBox( x + width, y + height );
850 }
851
852 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
853 {
854 wxCHECK_RET( Ok(), wxT("invalid window dc") );
855
856 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
857
858 wxCoord xx = XLOG2DEV(x);
859 wxCoord yy = YLOG2DEV(y);
860 wxCoord ww = m_signX * XLOG2DEVREL(width);
861 wxCoord hh = m_signY * YLOG2DEVREL(height);
862 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
863
864 // CMB: handle -ve width and/or height
865 if (ww < 0) { ww = -ww; xx = xx - ww; }
866 if (hh < 0) { hh = -hh; yy = yy - hh; }
867
868 // CMB: if radius is zero use DrawRectangle() instead to avoid
869 // X drawing errors with small radii
870 if (rr == 0)
871 {
872 DrawRectangle( x, y, width, height );
873 return;
874 }
875
876 // CMB: draw nothing if transformed w or h is 0
877 if (ww == 0 || hh == 0) return;
878
879 // CMB: adjust size if outline is drawn otherwise the result is
880 // 1 pixel too wide and high
881 if (m_pen.GetStyle() != wxTRANSPARENT)
882 {
883 ww--;
884 hh--;
885 }
886
887 if (m_window)
888 {
889 // CMB: ensure dd is not larger than rectangle otherwise we
890 // get an hour glass shape
891 wxCoord dd = 2 * rr;
892 if (dd > ww) dd = ww;
893 if (dd > hh) dd = hh;
894 rr = dd / 2;
895
896 if (m_brush.GetStyle() != wxTRANSPARENT)
897 {
898 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
899 {
900 gdk_gc_set_ts_origin( m_textGC,
901 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
902 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
903 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
904 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
905 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
906 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
907 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
908 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
909 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
910 } else
911 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
912 {
913 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
914 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
915 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
916 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
917 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
918 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
919 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
920 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
921 } else
922 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
923 {
924 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
925 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
926 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
927 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
928 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
929 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
930 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
931 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
932 } else
933 if (m_brush.GetStyle() == wxSTIPPLE)
934 {
935 gdk_gc_set_ts_origin( m_brushGC,
936 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
937 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
938 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
939 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
940 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
941 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
942 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
944 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
945 }
946 else
947 {
948 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
949 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
950 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
951 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
952 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
953 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
954 }
955 }
956
957 if (m_pen.GetStyle() != wxTRANSPARENT)
958 {
959 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
960 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
961 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
962 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
963 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
964 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
965 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
966 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
967 }
968 }
969
970 // this ignores the radius
971 CalcBoundingBox( x, y );
972 CalcBoundingBox( x + width, y + height );
973 }
974
975 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
976 {
977 wxCHECK_RET( Ok(), wxT("invalid window dc") );
978
979 wxCoord xx = XLOG2DEV(x);
980 wxCoord yy = YLOG2DEV(y);
981 wxCoord ww = m_signX * XLOG2DEVREL(width);
982 wxCoord hh = m_signY * YLOG2DEVREL(height);
983
984 // CMB: handle -ve width and/or height
985 if (ww < 0) { ww = -ww; xx = xx - ww; }
986 if (hh < 0) { hh = -hh; yy = yy - hh; }
987
988 if (m_window)
989 {
990 if (m_brush.GetStyle() != wxTRANSPARENT)
991 {
992 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
993 {
994 gdk_gc_set_ts_origin( m_textGC,
995 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
996 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
997 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
998 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
999 } else
1000 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1001 {
1002 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1003 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1004 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1005 } else
1006 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1007 {
1008 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1009 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1010 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1011 } else
1012 if (m_brush.GetStyle() == wxSTIPPLE)
1013 {
1014 gdk_gc_set_ts_origin( m_brushGC,
1015 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1016 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1017 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1018 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1019 }
1020 else
1021 {
1022 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1023 }
1024 }
1025
1026 if (m_pen.GetStyle() != wxTRANSPARENT)
1027 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1028 }
1029
1030 CalcBoundingBox( x, y );
1031 CalcBoundingBox( x + width, y + height );
1032 }
1033
1034 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1035 {
1036 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1037 DoDrawBitmap( (const wxBitmap&)icon, x, y, (bool)TRUE );
1038 }
1039
1040 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1041 wxCoord x, wxCoord y,
1042 bool useMask )
1043 {
1044 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1045
1046 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1047
1048 bool is_mono = (bitmap.GetBitmap() != NULL);
1049
1050 // scale/translate size and position
1051 int xx = XLOG2DEV(x);
1052 int yy = YLOG2DEV(y);
1053
1054 int w = bitmap.GetWidth();
1055 int h = bitmap.GetHeight();
1056
1057 CalcBoundingBox( x, y );
1058 CalcBoundingBox( x + w, y + h );
1059
1060 if (!m_window) return;
1061
1062 int ww = XLOG2DEVREL(w);
1063 int hh = YLOG2DEVREL(h);
1064
1065 // compare to current clipping region
1066 if (!m_currentClippingRegion.IsNull())
1067 {
1068 wxRegion tmp( xx,yy,ww,hh );
1069 tmp.Intersect( m_currentClippingRegion );
1070 if (tmp.IsEmpty())
1071 return;
1072 }
1073
1074 // scale bitmap if required
1075 wxBitmap use_bitmap = bitmap;
1076 if ((w != ww) || (h != hh))
1077 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1078
1079 // apply mask if any
1080 GdkBitmap *mask = (GdkBitmap *) NULL;
1081 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1082
1083 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1084
1085 if (useMask && mask)
1086 {
1087 if (!m_currentClippingRegion.IsNull())
1088 {
1089 GdkColor col;
1090 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1091 GdkGC *gc = gdk_gc_new( new_mask );
1092 col.pixel = 0;
1093 gdk_gc_set_foreground( gc, &col );
1094 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1095 col.pixel = 0;
1096 gdk_gc_set_background( gc, &col );
1097 col.pixel = 1;
1098 gdk_gc_set_foreground( gc, &col );
1099 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1100 gdk_gc_set_clip_origin( gc, -xx, -yy );
1101 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1102 gdk_gc_set_stipple( gc, mask );
1103 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1104 gdk_gc_unref( gc );
1105 }
1106
1107 if (is_mono)
1108 {
1109 if (new_mask)
1110 gdk_gc_set_clip_mask( m_textGC, new_mask );
1111 else
1112 gdk_gc_set_clip_mask( m_textGC, mask );
1113 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1114 }
1115 else
1116 {
1117 if (new_mask)
1118 gdk_gc_set_clip_mask( m_penGC, new_mask );
1119 else
1120 gdk_gc_set_clip_mask( m_penGC, mask );
1121 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1122 }
1123 }
1124
1125 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1126 // drawing a mono-bitmap (XBitmap) we use the current text GC
1127 if (is_mono)
1128 {
1129 #ifdef __WXGTK20__
1130 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1131 GdkGC *gc = gdk_gc_new( bitmap );
1132 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1133 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1134 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1135
1136 gdk_draw_drawable( m_window, m_textGC, bitmap, 0, 0, xx, yy, -1, -1 );
1137
1138 gdk_bitmap_unref( bitmap );
1139 gdk_gc_unref( gc );
1140 #else
1141 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );
1142 #endif
1143 }
1144 else
1145 {
1146 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1147 }
1148
1149 // remove mask again if any
1150 if (useMask && mask)
1151 {
1152 if (is_mono)
1153 {
1154 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1155 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1156 if (!m_currentClippingRegion.IsNull())
1157 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1158 }
1159 else
1160 {
1161 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1162 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1163 if (!m_currentClippingRegion.IsNull())
1164 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1165 }
1166 }
1167
1168 if (new_mask)
1169 gdk_bitmap_unref( new_mask );
1170 }
1171
1172 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1173 wxCoord width, wxCoord height,
1174 wxDC *source,
1175 wxCoord xsrc, wxCoord ysrc,
1176 int logical_func,
1177 bool useMask,
1178 wxCoord xsrcMask, wxCoord ysrcMask )
1179 {
1180 wxCHECK_MSG( Ok(), FALSE, wxT("invalid window dc") );
1181
1182 wxCHECK_MSG( source, FALSE, wxT("invalid source dc") );
1183
1184 if (!m_window) return FALSE;
1185
1186 // transform the source DC coords to the device ones
1187 xsrc = source->XLOG2DEV(xsrc);
1188 ysrc = source->YLOG2DEV(ysrc);
1189
1190 wxClientDC *srcDC = (wxClientDC*)source;
1191 wxMemoryDC *memDC = (wxMemoryDC*)source;
1192
1193 bool use_bitmap_method = FALSE;
1194 bool is_mono = FALSE;
1195
1196 // TODO: use the mask origin when drawing transparently
1197 if (xsrcMask == -1 && ysrcMask == -1)
1198 {
1199 xsrcMask = xsrc;
1200 ysrcMask = ysrc;
1201 }
1202
1203 if (srcDC->m_isMemDC)
1204 {
1205 if (!memDC->m_selected.Ok()) return FALSE;
1206
1207 is_mono = (memDC->m_selected.GetDepth() == 1);
1208
1209 // we use the "XCopyArea" way to copy a memory dc into
1210 // a different window if the memory dc BOTH
1211 // a) doesn't have any mask or its mask isn't used
1212 // b) it is clipped
1213 // c) is not 1-bit
1214
1215 if (useMask && (memDC->m_selected.GetMask()))
1216 {
1217 // we HAVE TO use the direct way for memory dcs
1218 // that have mask since the XCopyArea doesn't know
1219 // about masks
1220 use_bitmap_method = TRUE;
1221 }
1222 else if (is_mono)
1223 {
1224 // we HAVE TO use the direct way for memory dcs
1225 // that are bitmaps because XCopyArea doesn't cope
1226 // with different bit depths
1227 use_bitmap_method = TRUE;
1228 }
1229 else if ((xsrc == 0) && (ysrc == 0) &&
1230 (width == memDC->m_selected.GetWidth()) &&
1231 (height == memDC->m_selected.GetHeight()))
1232 {
1233 // we SHOULD use the direct way if all of the bitmap
1234 // in the memory dc is copied in which case XCopyArea
1235 // wouldn't be able able to boost performace by reducing
1236 // the area to be scaled
1237 use_bitmap_method = TRUE;
1238 }
1239 else
1240 {
1241 use_bitmap_method = FALSE;
1242 }
1243 }
1244
1245 CalcBoundingBox( xdest, ydest );
1246 CalcBoundingBox( xdest + width, ydest + height );
1247
1248 // scale/translate size and position
1249 wxCoord xx = XLOG2DEV(xdest);
1250 wxCoord yy = YLOG2DEV(ydest);
1251
1252 wxCoord ww = XLOG2DEVREL(width);
1253 wxCoord hh = YLOG2DEVREL(height);
1254
1255 // compare to current clipping region
1256 if (!m_currentClippingRegion.IsNull())
1257 {
1258 wxRegion tmp( xx,yy,ww,hh );
1259 tmp.Intersect( m_currentClippingRegion );
1260 if (tmp.IsEmpty())
1261 return TRUE;
1262 }
1263
1264 int old_logical_func = m_logicalFunction;
1265 SetLogicalFunction( logical_func );
1266
1267 if (use_bitmap_method)
1268 {
1269 // scale/translate bitmap size
1270 wxCoord bm_width = memDC->m_selected.GetWidth();
1271 wxCoord bm_height = memDC->m_selected.GetHeight();
1272
1273 // Get clip coords for the bitmap. If we don't
1274 // use wxBitmap::Rescale(), which can clip the
1275 // bitmap, these are the same as the original
1276 // coordinates
1277 wxCoord cx = xx;
1278 wxCoord cy = yy;
1279 wxCoord cw = ww;
1280 wxCoord ch = hh;
1281
1282 // interpret userscale of src too
1283 double xsc,ysc;
1284 memDC->GetUserScale(&xsc,&ysc);
1285 bm_width = (int) (bm_width / xsc);
1286 bm_height = (int) (bm_height / ysc);
1287
1288 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1289 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1290
1291 // Scale bitmap if required
1292 wxBitmap use_bitmap;
1293 if ((bm_width != bm_ww) || (bm_height != bm_hh))
1294 {
1295 // This indicates that the blitting code below will get
1296 // a clipped bitmap and therefore needs to move the origin
1297 // accordingly
1298 wxRegion tmp( xx,yy,ww,hh );
1299 tmp.Intersect( m_currentClippingRegion );
1300 tmp.GetBox(cx,cy,cw,ch);
1301
1302 // Scale and clipped bitmap
1303 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1304 }
1305 else
1306 {
1307 // Don't scale bitmap
1308 use_bitmap = memDC->m_selected;
1309 }
1310
1311 // apply mask if any
1312 GdkBitmap *mask = (GdkBitmap *) NULL;
1313 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1314
1315 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1316
1317 if (useMask && mask)
1318 {
1319 if (!m_currentClippingRegion.IsNull())
1320 {
1321 GdkColor col;
1322 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1323 GdkGC *gc = gdk_gc_new( new_mask );
1324 col.pixel = 0;
1325 gdk_gc_set_foreground( gc, &col );
1326 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1327 col.pixel = 0;
1328 gdk_gc_set_background( gc, &col );
1329 col.pixel = 1;
1330 gdk_gc_set_foreground( gc, &col );
1331 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1332 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1333 gdk_gc_set_clip_origin( gc, -cx, -cy );
1334 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1335 gdk_gc_set_stipple( gc, mask );
1336 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1337 gdk_gc_unref( gc );
1338 }
1339
1340 if (is_mono)
1341 {
1342 if (new_mask)
1343 gdk_gc_set_clip_mask( m_textGC, new_mask );
1344 else
1345 gdk_gc_set_clip_mask( m_textGC, mask );
1346 // was: gdk_gc_set_clip_origin( m_textGC, xx, yy );
1347 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1348 }
1349 else
1350 {
1351 if (new_mask)
1352 gdk_gc_set_clip_mask( m_penGC, new_mask );
1353 else
1354 gdk_gc_set_clip_mask( m_penGC, mask );
1355 // was: gdk_gc_set_clip_origin( m_penGC, xx, yy );
1356 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1357 }
1358 }
1359
1360 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1361 // drawing a mono-bitmap (XBitmap) we use the current text GC
1362
1363 if (is_mono)
1364 {
1365 #ifdef __WXGTK20__
1366 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1367 GdkGC *gc = gdk_gc_new( bitmap );
1368 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1369 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1370 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1371
1372 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1373
1374 gdk_bitmap_unref( bitmap );
1375 gdk_gc_unref( gc );
1376 #else
1377 // was: gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, xx, yy, ww, hh );
1378 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, cx, cy, cw, ch );
1379 #endif
1380 }
1381 else
1382 {
1383 // was: gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1384 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1385 }
1386
1387 // remove mask again if any
1388 if (useMask && mask)
1389 {
1390 if (is_mono)
1391 {
1392 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1393 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1394 if (!m_currentClippingRegion.IsNull())
1395 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1396 }
1397 else
1398 {
1399 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1400 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1401 if (!m_currentClippingRegion.IsNull())
1402 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1403 }
1404 }
1405
1406 if (new_mask)
1407 gdk_bitmap_unref( new_mask );
1408 }
1409 else // use_bitmap_method
1410 {
1411 if ((width != ww) || (height != hh))
1412 {
1413 // get clip coords
1414 wxRegion tmp( xx,yy,ww,hh );
1415 tmp.Intersect( m_currentClippingRegion );
1416 wxCoord cx,cy,cw,ch;
1417 tmp.GetBox(cx,cy,cw,ch);
1418
1419 // rescale bitmap
1420 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1421
1422 // draw scaled bitmap
1423 // was: gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1424 gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1425 }
1426 else
1427 {
1428 // No scaling and not a memory dc with a mask either
1429
1430 // copy including child window contents
1431 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1432 gdk_window_copy_area( m_window, m_penGC, xx, yy,
1433 srcDC->GetWindow(),
1434 xsrc, ysrc, width, height );
1435 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1436 }
1437 }
1438
1439 SetLogicalFunction( old_logical_func );
1440
1441 return TRUE;
1442 }
1443
1444 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1445 {
1446 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1447
1448 if (!m_window) return;
1449
1450 if (text.empty()) return;
1451
1452 #ifndef __WXGTK20__
1453 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1454
1455 wxCHECK_RET( font, wxT("invalid font") );
1456 #endif
1457
1458 x = XLOG2DEV(x);
1459 y = YLOG2DEV(y);
1460
1461 #ifdef __WXGTK20__
1462 wxCHECK_RET( m_context, wxT("no Pango context") );
1463 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1464 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1465
1466 #if wxUSE_UNICODE
1467 const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
1468 #else
1469 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
1470 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1471 #endif
1472 pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
1473
1474 int w,h;
1475
1476 if (fabs(m_scaleY - 1.0) < 0.00001)
1477 {
1478 // If there is a user or actually any scale applied to
1479 // the device context, scale the font.
1480
1481 // scale font description
1482 gint oldSize = pango_font_description_get_size( m_fontdesc );
1483 double size = oldSize;
1484 size = size * m_scaleY;
1485 pango_font_description_set_size( m_fontdesc, (gint)size );
1486
1487 // actually apply scaled font
1488 pango_layout_set_font_description( m_layout, m_fontdesc );
1489
1490 pango_layout_get_pixel_size( m_layout, &w, &h );
1491 if ( m_backgroundMode == wxSOLID )
1492 {
1493 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1494 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1495 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1496 }
1497
1498 // Draw layout.
1499 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1500
1501 // reset unscaled size
1502 pango_font_description_set_size( m_fontdesc, oldSize );
1503
1504 // actually apply unscaled font
1505 pango_layout_set_font_description( m_layout, m_fontdesc );
1506 }
1507 else
1508 {
1509 pango_layout_get_pixel_size( m_layout, &w, &h );
1510 if ( m_backgroundMode == wxSOLID )
1511 {
1512 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1513 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1514 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1515 }
1516 // Draw layout.
1517 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1518 }
1519
1520 wxCoord width = w;
1521 wxCoord height = h;
1522
1523 #else // GTK+ 1.x
1524 wxCoord width = gdk_string_width( font, text.mbc_str() );
1525 wxCoord height = font->ascent + font->descent;
1526
1527 if ( m_backgroundMode == wxSOLID )
1528 {
1529 gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() );
1530 gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height );
1531 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
1532 }
1533 gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text.mbc_str() );
1534
1535 /* CMB 17/7/98: simple underline: ignores scaling and underlying
1536 X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
1537 properties (see wxXt implementation) */
1538 if (m_font.GetUnderlined())
1539 {
1540 wxCoord ul_y = y + font->ascent;
1541 if (font->descent > 0) ul_y++;
1542 gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
1543 }
1544 #endif // GTK+ 2.0/1.x
1545
1546 width = wxCoord(width / m_scaleX);
1547 height = wxCoord(height / m_scaleY);
1548 CalcBoundingBox (x + width, y + height);
1549 CalcBoundingBox (x, y);
1550 }
1551
1552 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1553 {
1554 if (angle == 0.0)
1555 {
1556 DrawText(text, x, y);
1557 return;
1558 }
1559
1560 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1561
1562 if (!m_window) return;
1563
1564 #ifdef __WXGTK20__
1565 // implement later without GdkFont for GTK 2.0
1566 return;
1567 #else
1568 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1569
1570 wxCHECK_RET( font, wxT("invalid font") );
1571
1572 // the size of the text
1573 wxCoord w = gdk_string_width( font, text.mbc_str() );
1574 wxCoord h = font->ascent + font->descent;
1575
1576 // draw the string normally
1577 wxBitmap src(w, h);
1578 wxMemoryDC dc;
1579 dc.SelectObject(src);
1580 dc.SetFont(GetFont());
1581 dc.SetBackground(*wxWHITE_BRUSH);
1582 dc.SetBrush(*wxBLACK_BRUSH);
1583 dc.Clear();
1584 dc.DrawText(text, 0, 0);
1585 dc.SelectObject(wxNullBitmap);
1586
1587 // Calculate the size of the rotated bounding box.
1588 double rad = DegToRad(angle);
1589 double dx = cos(rad),
1590 dy = sin(rad);
1591
1592 // the rectngle vertices are counted clockwise with the first one being at
1593 // (0, 0) (or, rather, at (x, y))
1594 double x2 = w*dx,
1595 y2 = -w*dy; // y axis points to the bottom, hence minus
1596 double x4 = h*dy,
1597 y4 = h*dx;
1598 double x3 = x4 + x2,
1599 y3 = y4 + y2;
1600
1601 // calc max and min
1602 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1603 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1604 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1605 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1606
1607 // prepare to blit-with-rotate the bitmap to the DC
1608 wxImage image = src.ConvertToImage();
1609
1610 GdkColor *colText = m_textForegroundColour.GetColor(),
1611 *colBack = m_textBackgroundColour.GetColor();
1612
1613 bool textColSet = TRUE;
1614
1615 unsigned char *data = image.GetData();
1616
1617 // paint pixel by pixel
1618 for ( wxCoord srcX = 0; srcX < w; srcX++ )
1619 {
1620 for ( wxCoord srcY = 0; srcY < h; srcY++ )
1621 {
1622 // transform source coords to dest coords
1623 double r = sqrt((double)srcX*srcX + srcY*srcY);
1624 double angleOrig = atan2((double)srcY, (double)srcX) - rad;
1625 wxCoord dstX = (wxCoord)(r*cos(angleOrig) + 0.5),
1626 dstY = (wxCoord)(r*sin(angleOrig) + 0.5);
1627
1628 // black pixel?
1629 bool textPixel = data[(srcY*w + srcX)*3] == 0;
1630 if ( textPixel || (m_backgroundMode == wxSOLID) )
1631 {
1632 // change colour if needed
1633 if ( textPixel != textColSet )
1634 {
1635 gdk_gc_set_foreground( m_textGC, textPixel ? colText
1636 : colBack );
1637
1638 textColSet = textPixel;
1639 }
1640
1641 // don't use DrawPoint() because it uses the current pen
1642 // colour, and we don't need it here
1643 gdk_draw_point( m_window, m_textGC,
1644 XLOG2DEV(x) + dstX, YLOG2DEV(y) + dstY );
1645 }
1646 }
1647 }
1648
1649 // it would be better to draw with non underlined font and draw the line
1650 // manually here (it would be more straight...)
1651 #if 0
1652 if ( m_font.GetUnderlined() )
1653 {
1654 gdk_draw_line( m_window, m_textGC,
1655 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1656 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1657 }
1658 #endif // 0
1659
1660 // restore the font colour
1661 gdk_gc_set_foreground( m_textGC, colText );
1662
1663 // update the bounding box
1664 CalcBoundingBox(x + minX, y + minY);
1665 CalcBoundingBox(x + maxX, y + maxY);
1666 #endif
1667 }
1668
1669 void wxWindowDC::DoGetTextExtent(const wxString &string,
1670 wxCoord *width, wxCoord *height,
1671 wxCoord *descent, wxCoord *externalLeading,
1672 wxFont *theFont) const
1673 {
1674 if (string.IsEmpty())
1675 {
1676 if (width) (*width) = 0;
1677 if (height) (*height) = 0;
1678 return;
1679 }
1680
1681 #ifdef __WXGTK20__
1682 // Set new font description
1683 if (theFont)
1684 pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );
1685
1686 // Set layout's text
1687 #if wxUSE_UNICODE
1688 const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
1689 pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
1690 #else
1691 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
1692 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1693 pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
1694 #endif
1695
1696 int w,h;
1697 pango_layout_get_pixel_size( m_layout, &w, &h );
1698
1699 if (width) (*width) = (wxCoord) w;
1700 if (height) (*height) = (wxCoord) h;
1701 if (descent)
1702 {
1703 // Do something about metrics here. TODO.
1704 (*descent) = 0;
1705 }
1706 if (externalLeading) (*externalLeading) = 0; // ??
1707
1708 // Reset old font description
1709 if (theFont)
1710 pango_layout_set_font_description( m_layout, m_fontdesc );
1711 #else
1712 wxFont fontToUse = m_font;
1713 if (theFont) fontToUse = *theFont;
1714
1715 GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
1716 if (width) (*width) = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
1717 if (height) (*height) = wxCoord((font->ascent + font->descent) / m_scaleY);
1718 if (descent) (*descent) = wxCoord(font->descent / m_scaleY);
1719 if (externalLeading) (*externalLeading) = 0; // ??
1720 #endif
1721 }
1722
1723 wxCoord wxWindowDC::GetCharWidth() const
1724 {
1725 #ifdef __WXGTK20__
1726 pango_layout_set_text( m_layout, "H", 1 );
1727 int w,h;
1728 pango_layout_get_pixel_size( m_layout, &w, &h );
1729 return w;
1730 #else
1731 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1732 wxCHECK_MSG( font, -1, wxT("invalid font") );
1733
1734 return wxCoord(gdk_string_width( font, "H" ) / m_scaleX);
1735 #endif
1736 }
1737
1738 wxCoord wxWindowDC::GetCharHeight() const
1739 {
1740 #ifdef __WXGTK20__
1741 pango_layout_set_text( m_layout, "H", 1 );
1742 int w,h;
1743 pango_layout_get_pixel_size( m_layout, &w, &h );
1744 return h;
1745 #else
1746 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1747 wxCHECK_MSG( font, -1, wxT("invalid font") );
1748
1749 return wxCoord((font->ascent + font->descent) / m_scaleY);
1750 #endif
1751 }
1752
1753 void wxWindowDC::Clear()
1754 {
1755 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1756
1757 if (!m_window) return;
1758
1759 // VZ: the code below results in infinite recursion and crashes when
1760 // dc.Clear() is done from OnPaint() so I disable it for now.
1761 // I don't know what the correct fix is but Clear() surely should not
1762 // reenter OnPaint()!
1763 #if 0
1764 /* - we either are a memory dc or have a window as the
1765 owner. anything else shouldn't happen.
1766 - we don't use gdk_window_clear() as we don't set
1767 the window's background colour anymore. it is too
1768 much pain to keep the DC's and the window's back-
1769 ground colour in synch. */
1770
1771 if (m_owner)
1772 {
1773 m_owner->Clear();
1774 return;
1775 }
1776
1777 if (m_isMemDC)
1778 {
1779 int width,height;
1780 GetSize( &width, &height );
1781 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1782 return;
1783 }
1784 #else // 1
1785 int width,height;
1786 GetSize( &width, &height );
1787 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1788 #endif // 0/1
1789 }
1790
1791 void wxWindowDC::SetFont( const wxFont &font )
1792 {
1793 m_font = font;
1794
1795 #ifdef __WXGTK20__
1796 if (m_font.Ok())
1797 {
1798 if (m_fontdesc)
1799 pango_font_description_free( m_fontdesc );
1800
1801 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1802
1803
1804 if (m_owner)
1805 {
1806 PangoContext *oldContext = m_context;
1807
1808 // We might want to use the X11 context for faster
1809 // rendering on screen
1810 if (m_font.GetNoAntiAliasing())
1811 m_context = m_owner->GtkGetPangoX11Context();
1812 else
1813 m_context = m_owner->GtkGetPangoDefaultContext();
1814
1815 // If we switch back/forth between different contexts
1816 // we also have to create a new layout. I think so,
1817 // at least, and it doesn't hurt to do it.
1818 if (oldContext != m_context)
1819 {
1820 if (m_layout)
1821 g_object_unref( G_OBJECT( m_layout ) );
1822
1823 m_layout = pango_layout_new( m_context );
1824 }
1825 }
1826
1827 pango_layout_set_font_description( m_layout, m_fontdesc );
1828 }
1829 #endif
1830 }
1831
1832 void wxWindowDC::SetPen( const wxPen &pen )
1833 {
1834 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1835
1836 if (m_pen == pen) return;
1837
1838 m_pen = pen;
1839
1840 if (!m_pen.Ok()) return;
1841
1842 if (!m_window) return;
1843
1844 gint width = m_pen.GetWidth();
1845 if (width <= 0)
1846 {
1847 // CMB: if width is non-zero scale it with the dc
1848 width = 1;
1849 }
1850 else
1851 {
1852 // X doesn't allow different width in x and y and so we take
1853 // the average
1854 double w = 0.5 +
1855 ( fabs((double) XLOG2DEVREL(width)) +
1856 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1857 width = (int)w;
1858 if ( !width )
1859 {
1860 // width can't be 0 or an internal GTK error occurs inside
1861 // gdk_gc_set_dashes() below
1862 width = 1;
1863 }
1864 }
1865
1866 static const wxGTKDash dotted[] = {1, 1};
1867 static const wxGTKDash short_dashed[] = {2, 2};
1868 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1869 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1870
1871 // We express dash pattern in pen width unit, so we are
1872 // independent of zoom factor and so on...
1873 int req_nb_dash;
1874 const wxGTKDash *req_dash;
1875
1876 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1877 switch (m_pen.GetStyle())
1878 {
1879 case wxUSER_DASH:
1880 {
1881 lineStyle = GDK_LINE_ON_OFF_DASH;
1882 req_nb_dash = m_pen.GetDashCount();
1883 req_dash = (wxGTKDash*)m_pen.GetDash();
1884 break;
1885 }
1886 case wxDOT:
1887 {
1888 lineStyle = GDK_LINE_ON_OFF_DASH;
1889 req_nb_dash = 2;
1890 req_dash = dotted;
1891 break;
1892 }
1893 case wxLONG_DASH:
1894 {
1895 lineStyle = GDK_LINE_ON_OFF_DASH;
1896 req_nb_dash = 2;
1897 req_dash = wxCoord_dashed;
1898 break;
1899 }
1900 case wxSHORT_DASH:
1901 {
1902 lineStyle = GDK_LINE_ON_OFF_DASH;
1903 req_nb_dash = 2;
1904 req_dash = short_dashed;
1905 break;
1906 }
1907 case wxDOT_DASH:
1908 {
1909 // lineStyle = GDK_LINE_DOUBLE_DASH;
1910 lineStyle = GDK_LINE_ON_OFF_DASH;
1911 req_nb_dash = 4;
1912 req_dash = dotted_dashed;
1913 break;
1914 }
1915
1916 case wxTRANSPARENT:
1917 case wxSTIPPLE_MASK_OPAQUE:
1918 case wxSTIPPLE:
1919 case wxSOLID:
1920 default:
1921 {
1922 lineStyle = GDK_LINE_SOLID;
1923 req_dash = (wxGTKDash*)NULL;
1924 req_nb_dash = 0;
1925 break;
1926 }
1927 }
1928
1929 #if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
1930 if (req_dash && req_nb_dash)
1931 {
1932 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1933 if (real_req_dash)
1934 {
1935 for (int i = 0; i < req_nb_dash; i++)
1936 real_req_dash[i] = req_dash[i] * width;
1937 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1938 delete[] real_req_dash;
1939 }
1940 else
1941 {
1942 // No Memory. We use non-scaled dash pattern...
1943 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1944 }
1945 }
1946 #endif // GTK+ > 1.0
1947
1948 GdkCapStyle capStyle = GDK_CAP_ROUND;
1949 switch (m_pen.GetCap())
1950 {
1951 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1952 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1953 case wxCAP_ROUND:
1954 default:
1955 {
1956 if (width <= 1)
1957 {
1958 width = 0;
1959 capStyle = GDK_CAP_NOT_LAST;
1960 }
1961 else
1962 {
1963 capStyle = GDK_CAP_ROUND;
1964 }
1965 break;
1966 }
1967 }
1968
1969 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1970 switch (m_pen.GetJoin())
1971 {
1972 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1973 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1974 case wxJOIN_ROUND:
1975 default: { joinStyle = GDK_JOIN_ROUND; break; }
1976 }
1977
1978 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1979
1980 m_pen.GetColour().CalcPixel( m_cmap );
1981 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1982 }
1983
1984 void wxWindowDC::SetBrush( const wxBrush &brush )
1985 {
1986 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1987
1988 if (m_brush == brush) return;
1989
1990 m_brush = brush;
1991
1992 if (!m_brush.Ok()) return;
1993
1994 if (!m_window) return;
1995
1996 m_brush.GetColour().CalcPixel( m_cmap );
1997 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1998
1999 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2000
2001 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2002 {
2003 if (m_brush.GetStipple()->GetPixmap())
2004 {
2005 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2006 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2007 }
2008 else
2009 {
2010 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2011 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetBitmap() );
2012 }
2013 }
2014
2015 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2016 {
2017 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2018 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2019 }
2020
2021 if (IS_HATCH(m_brush.GetStyle()))
2022 {
2023 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2024 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2025 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2026 }
2027 }
2028
2029 void wxWindowDC::SetBackground( const wxBrush &brush )
2030 {
2031 /* CMB 21/7/98: Added SetBackground. Sets background brush
2032 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2033
2034 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2035
2036 if (m_backgroundBrush == brush) return;
2037
2038 m_backgroundBrush = brush;
2039
2040 if (!m_backgroundBrush.Ok()) return;
2041
2042 if (!m_window) return;
2043
2044 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2045 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2046 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2047 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2048 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2049
2050 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2051
2052 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2053 {
2054 if (m_backgroundBrush.GetStipple()->GetPixmap())
2055 {
2056 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2057 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2058 }
2059 else
2060 {
2061 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2062 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetBitmap() );
2063 }
2064 }
2065
2066 if (IS_HATCH(m_backgroundBrush.GetStyle()))
2067 {
2068 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2069 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2070 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2071 }
2072 }
2073
2074 void wxWindowDC::SetLogicalFunction( int function )
2075 {
2076 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2077
2078 if (m_logicalFunction == function)
2079 return;
2080
2081 // VZ: shouldn't this be a CHECK?
2082 if (!m_window)
2083 return;
2084
2085 GdkFunction mode;
2086 switch (function)
2087 {
2088 case wxXOR: mode = GDK_XOR; break;
2089 case wxINVERT: mode = GDK_INVERT; break;
2090 #if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
2091 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2092 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2093 case wxCLEAR: mode = GDK_CLEAR; break;
2094 case wxSET: mode = GDK_SET; break;
2095 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2096 case wxAND: mode = GDK_AND; break;
2097 case wxOR: mode = GDK_OR; break;
2098 case wxEQUIV: mode = GDK_EQUIV; break;
2099 case wxNAND: mode = GDK_NAND; break;
2100 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2101 case wxCOPY: mode = GDK_COPY; break;
2102 case wxNO_OP: mode = GDK_NOOP; break;
2103 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2104
2105 // unsupported by GTK
2106 case wxNOR: mode = GDK_COPY; break;
2107 #endif // GTK+ > 1.0
2108 default:
2109 wxFAIL_MSG( wxT("unsupported logical function") );
2110 mode = GDK_COPY;
2111 }
2112
2113 m_logicalFunction = function;
2114
2115 gdk_gc_set_function( m_penGC, mode );
2116 gdk_gc_set_function( m_brushGC, mode );
2117
2118 // to stay compatible with wxMSW, we don't apply ROPs to the text
2119 // operations (i.e. DrawText/DrawRotatedText).
2120 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2121 gdk_gc_set_function( m_textGC, mode );
2122 }
2123
2124 void wxWindowDC::SetTextForeground( const wxColour &col )
2125 {
2126 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2127
2128 // don't set m_textForegroundColour to an invalid colour as we'd crash
2129 // later then (we use m_textForegroundColour.GetColor() without checking
2130 // in a few places)
2131 if ( !col.Ok() || (m_textForegroundColour == col) )
2132 return;
2133
2134 m_textForegroundColour = col;
2135
2136 if ( m_window )
2137 {
2138 m_textForegroundColour.CalcPixel( m_cmap );
2139 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2140 }
2141 }
2142
2143 void wxWindowDC::SetTextBackground( const wxColour &col )
2144 {
2145 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2146
2147 // same as above
2148 if ( !col.Ok() || (m_textBackgroundColour == col) )
2149 return;
2150
2151 m_textBackgroundColour = col;
2152
2153 if ( m_window )
2154 {
2155 m_textBackgroundColour.CalcPixel( m_cmap );
2156 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2157 }
2158 }
2159
2160 void wxWindowDC::SetBackgroundMode( int mode )
2161 {
2162 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2163
2164 m_backgroundMode = mode;
2165
2166 if (!m_window) return;
2167
2168 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2169 // transparent/solid background mode
2170
2171 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2172 {
2173 gdk_gc_set_fill( m_brushGC,
2174 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2175 }
2176 }
2177
2178 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2179 {
2180 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2181 }
2182
2183 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2184 {
2185 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2186
2187 if (!m_window) return;
2188
2189 wxRect rect;
2190 rect.x = XLOG2DEV(x);
2191 rect.y = YLOG2DEV(y);
2192 rect.width = XLOG2DEVREL(width);
2193 rect.height = YLOG2DEVREL(height);
2194
2195 if (!m_currentClippingRegion.IsNull())
2196 m_currentClippingRegion.Intersect( rect );
2197 else
2198 m_currentClippingRegion.Union( rect );
2199
2200 #if USE_PAINT_REGION
2201 if (!m_paintClippingRegion.IsNull())
2202 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2203 #endif
2204
2205 wxCoord xx, yy, ww, hh;
2206 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2207 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2208
2209 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2210 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2211 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2212 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2213 }
2214
2215 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2216 {
2217 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2218
2219 if (region.Empty())
2220 {
2221 DestroyClippingRegion();
2222 return;
2223 }
2224
2225 if (!m_window) return;
2226
2227 if (!m_currentClippingRegion.IsNull())
2228 m_currentClippingRegion.Intersect( region );
2229 else
2230 m_currentClippingRegion.Union( region );
2231
2232 #if USE_PAINT_REGION
2233 if (!m_paintClippingRegion.IsNull())
2234 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2235 #endif
2236
2237 wxCoord xx, yy, ww, hh;
2238 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2239 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2240
2241 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2242 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2243 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2244 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2245 }
2246
2247 void wxWindowDC::DestroyClippingRegion()
2248 {
2249 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2250
2251 wxDC::DestroyClippingRegion();
2252
2253 m_currentClippingRegion.Clear();
2254
2255 #if USE_PAINT_REGION
2256 if (!m_paintClippingRegion.IsEmpty())
2257 m_currentClippingRegion.Union( m_paintClippingRegion );
2258 #endif
2259
2260 if (!m_window) return;
2261
2262 if (m_currentClippingRegion.IsEmpty())
2263 {
2264 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2265 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2266 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2267 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2268 }
2269 else
2270 {
2271 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2272 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2273 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2274 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2275 }
2276 }
2277
2278 void wxWindowDC::Destroy()
2279 {
2280 if (m_penGC) wxFreePoolGC( m_penGC );
2281 m_penGC = (GdkGC*) NULL;
2282 if (m_brushGC) wxFreePoolGC( m_brushGC );
2283 m_brushGC = (GdkGC*) NULL;
2284 if (m_textGC) wxFreePoolGC( m_textGC );
2285 m_textGC = (GdkGC*) NULL;
2286 if (m_bgGC) wxFreePoolGC( m_bgGC );
2287 m_bgGC = (GdkGC*) NULL;
2288 }
2289
2290 void wxWindowDC::ComputeScaleAndOrigin()
2291 {
2292 /* CMB: copy scale to see if it changes */
2293 double origScaleX = m_scaleX;
2294 double origScaleY = m_scaleY;
2295
2296 wxDC::ComputeScaleAndOrigin();
2297
2298 /* CMB: if scale has changed call SetPen to recalulate the line width */
2299 if ((m_scaleX != origScaleX || m_scaleY != origScaleY) &&
2300 (m_pen.Ok()))
2301 {
2302 /* this is a bit artificial, but we need to force wxDC to think
2303 the pen has changed */
2304 wxPen pen = m_pen;
2305 m_pen = wxNullPen;
2306 SetPen( pen );
2307 }
2308 }
2309
2310 // Resolution in pixels per logical inch
2311 wxSize wxWindowDC::GetPPI() const
2312 {
2313 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2314 }
2315
2316 int wxWindowDC::GetDepth() const
2317 {
2318 wxFAIL_MSG(wxT("not implemented"));
2319
2320 return -1;
2321 }
2322
2323
2324 //-----------------------------------------------------------------------------
2325 // wxPaintDC
2326 //-----------------------------------------------------------------------------
2327
2328 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2329
2330 wxPaintDC::wxPaintDC( wxWindow *win )
2331 : wxClientDC( win )
2332 {
2333 #if USE_PAINT_REGION
2334 if (!win->m_clipPaintRegion)
2335 return;
2336
2337 m_paintClippingRegion = win->GetUpdateRegion();
2338 GdkRegion *region = m_paintClippingRegion.GetRegion();
2339 if ( region )
2340 {
2341 m_paintClippingRegion = win->GetUpdateRegion();
2342 GdkRegion *region = m_paintClippingRegion.GetRegion();
2343 if ( region )
2344 {
2345 m_currentClippingRegion.Union( m_paintClippingRegion );
2346
2347 gdk_gc_set_clip_region( m_penGC, region );
2348 gdk_gc_set_clip_region( m_brushGC, region );
2349 gdk_gc_set_clip_region( m_textGC, region );
2350 gdk_gc_set_clip_region( m_bgGC, region );
2351 }
2352 }
2353 #endif // USE_PAINT_REGION
2354 }
2355
2356 //-----------------------------------------------------------------------------
2357 // wxClientDC
2358 //-----------------------------------------------------------------------------
2359
2360 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2361
2362 wxClientDC::wxClientDC( wxWindow *win )
2363 : wxWindowDC( win )
2364 {
2365 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2366
2367 #ifdef __WXUNIVERSAL__
2368 wxPoint ptOrigin = win->GetClientAreaOrigin();
2369 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2370 wxSize size = win->GetClientSize();
2371 SetClippingRegion(wxPoint(0, 0), size);
2372 #endif // __WXUNIVERSAL__
2373 }
2374
2375 void wxClientDC::DoGetSize(int *width, int *height) const
2376 {
2377 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2378
2379 m_owner->GetClientSize( width, height );
2380 }
2381
2382 // ----------------------------------------------------------------------------
2383 // wxDCModule
2384 // ----------------------------------------------------------------------------
2385
2386 class wxDCModule : public wxModule
2387 {
2388 public:
2389 bool OnInit();
2390 void OnExit();
2391
2392 private:
2393 DECLARE_DYNAMIC_CLASS(wxDCModule)
2394 };
2395
2396 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2397
2398 bool wxDCModule::OnInit()
2399 {
2400 wxInitGCPool();
2401 return TRUE;
2402 }
2403
2404 void wxDCModule::OnExit()
2405 {
2406 wxCleanUpGCPool();
2407 }
wxWidgets (Impactor)