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Optimized sizers to not call CalcMin more often than neccessary
[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 /*
777 for (i = 0 ; i < n ; i++)
778 {
779 gdk_draw_line( m_window, m_penGC,
780 gdkpoints[i%n].x,
781 gdkpoints[i%n].y,
782 gdkpoints[(i+1)%n].x,
783 gdkpoints[(i+1)%n].y);
784 }
785 */
786 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
787
788 }
789 }
790
791 delete[] gdkpoints;
792 }
793
794 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
795 {
796 wxCHECK_RET( Ok(), wxT("invalid window dc") );
797
798 wxCoord xx = XLOG2DEV(x);
799 wxCoord yy = YLOG2DEV(y);
800 wxCoord ww = m_signX * XLOG2DEVREL(width);
801 wxCoord hh = m_signY * YLOG2DEVREL(height);
802
803 // CMB: draw nothing if transformed w or h is 0
804 if (ww == 0 || hh == 0) return;
805
806 // CMB: handle -ve width and/or height
807 if (ww < 0) { ww = -ww; xx = xx - ww; }
808 if (hh < 0) { hh = -hh; yy = yy - hh; }
809
810 if (m_window)
811 {
812 if (m_brush.GetStyle() != wxTRANSPARENT)
813 {
814 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
815 {
816 gdk_gc_set_ts_origin( m_textGC,
817 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
818 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
819 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
820 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
821 } else
822 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
823 {
824 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
825 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
826 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
827 } else
828 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
829 {
830 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
831 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
832 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
833 } else
834 if (m_brush.GetStyle() == wxSTIPPLE)
835 {
836 gdk_gc_set_ts_origin( m_brushGC,
837 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
838 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
839 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
840 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
841 }
842 else
843 {
844 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
845 }
846 }
847
848 if (m_pen.GetStyle() != wxTRANSPARENT)
849 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
850 }
851
852 CalcBoundingBox( x, y );
853 CalcBoundingBox( x + width, y + height );
854 }
855
856 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
857 {
858 wxCHECK_RET( Ok(), wxT("invalid window dc") );
859
860 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
861
862 wxCoord xx = XLOG2DEV(x);
863 wxCoord yy = YLOG2DEV(y);
864 wxCoord ww = m_signX * XLOG2DEVREL(width);
865 wxCoord hh = m_signY * YLOG2DEVREL(height);
866 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
867
868 // CMB: handle -ve width and/or height
869 if (ww < 0) { ww = -ww; xx = xx - ww; }
870 if (hh < 0) { hh = -hh; yy = yy - hh; }
871
872 // CMB: if radius is zero use DrawRectangle() instead to avoid
873 // X drawing errors with small radii
874 if (rr == 0)
875 {
876 DrawRectangle( x, y, width, height );
877 return;
878 }
879
880 // CMB: draw nothing if transformed w or h is 0
881 if (ww == 0 || hh == 0) return;
882
883 // CMB: adjust size if outline is drawn otherwise the result is
884 // 1 pixel too wide and high
885 if (m_pen.GetStyle() != wxTRANSPARENT)
886 {
887 ww--;
888 hh--;
889 }
890
891 if (m_window)
892 {
893 // CMB: ensure dd is not larger than rectangle otherwise we
894 // get an hour glass shape
895 wxCoord dd = 2 * rr;
896 if (dd > ww) dd = ww;
897 if (dd > hh) dd = hh;
898 rr = dd / 2;
899
900 if (m_brush.GetStyle() != wxTRANSPARENT)
901 {
902 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
903 {
904 gdk_gc_set_ts_origin( m_textGC,
905 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
906 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
907 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
908 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
909 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
910 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
911 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
912 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
913 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
914 } else
915 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
916 {
917 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
918 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
919 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
920 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
921 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
922 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
923 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
924 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
925 } else
926 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
927 {
928 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
929 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
930 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
931 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
932 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
933 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
934 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
935 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
936 } else
937 if (m_brush.GetStyle() == wxSTIPPLE)
938 {
939 gdk_gc_set_ts_origin( m_brushGC,
940 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
941 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
943 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
948 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
949 }
950 else
951 {
952 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
953 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
954 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
958 }
959 }
960
961 if (m_pen.GetStyle() != wxTRANSPARENT)
962 {
963 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
964 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
965 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
966 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
967 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
968 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
969 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
970 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
971 }
972 }
973
974 // this ignores the radius
975 CalcBoundingBox( x, y );
976 CalcBoundingBox( x + width, y + height );
977 }
978
979 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
980 {
981 wxCHECK_RET( Ok(), wxT("invalid window dc") );
982
983 wxCoord xx = XLOG2DEV(x);
984 wxCoord yy = YLOG2DEV(y);
985 wxCoord ww = m_signX * XLOG2DEVREL(width);
986 wxCoord hh = m_signY * YLOG2DEVREL(height);
987
988 // CMB: handle -ve width and/or height
989 if (ww < 0) { ww = -ww; xx = xx - ww; }
990 if (hh < 0) { hh = -hh; yy = yy - hh; }
991
992 if (m_window)
993 {
994 if (m_brush.GetStyle() != wxTRANSPARENT)
995 {
996 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
997 {
998 gdk_gc_set_ts_origin( m_textGC,
999 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1000 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1001 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1002 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1003 } else
1004 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1005 {
1006 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1007 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1008 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1009 } else
1010 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1011 {
1012 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1013 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1014 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1015 } else
1016 if (m_brush.GetStyle() == wxSTIPPLE)
1017 {
1018 gdk_gc_set_ts_origin( m_brushGC,
1019 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1020 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1021 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1022 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1023 }
1024 else
1025 {
1026 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1027 }
1028 }
1029
1030 if (m_pen.GetStyle() != wxTRANSPARENT)
1031 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1032 }
1033
1034 CalcBoundingBox( x, y );
1035 CalcBoundingBox( x + width, y + height );
1036 }
1037
1038 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1039 {
1040 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1041 DoDrawBitmap( (const wxBitmap&)icon, x, y, (bool)TRUE );
1042 }
1043
1044 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1045 wxCoord x, wxCoord y,
1046 bool useMask )
1047 {
1048 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1049
1050 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1051
1052 bool is_mono = (bitmap.GetBitmap() != NULL);
1053
1054 // scale/translate size and position
1055 int xx = XLOG2DEV(x);
1056 int yy = YLOG2DEV(y);
1057
1058 int w = bitmap.GetWidth();
1059 int h = bitmap.GetHeight();
1060
1061 CalcBoundingBox( x, y );
1062 CalcBoundingBox( x + w, y + h );
1063
1064 if (!m_window) return;
1065
1066 int ww = XLOG2DEVREL(w);
1067 int hh = YLOG2DEVREL(h);
1068
1069 // compare to current clipping region
1070 if (!m_currentClippingRegion.IsNull())
1071 {
1072 wxRegion tmp( xx,yy,ww,hh );
1073 tmp.Intersect( m_currentClippingRegion );
1074 if (tmp.IsEmpty())
1075 return;
1076 }
1077
1078 // scale bitmap if required
1079 wxBitmap use_bitmap = bitmap;
1080 if ((w != ww) || (h != hh))
1081 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1082
1083 // apply mask if any
1084 GdkBitmap *mask = (GdkBitmap *) NULL;
1085 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1086
1087 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1088
1089 if (useMask && mask)
1090 {
1091 if (!m_currentClippingRegion.IsNull())
1092 {
1093 GdkColor col;
1094 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1095 GdkGC *gc = gdk_gc_new( new_mask );
1096 col.pixel = 0;
1097 gdk_gc_set_foreground( gc, &col );
1098 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1099 col.pixel = 0;
1100 gdk_gc_set_background( gc, &col );
1101 col.pixel = 1;
1102 gdk_gc_set_foreground( gc, &col );
1103 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1104 gdk_gc_set_clip_origin( gc, -xx, -yy );
1105 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1106 gdk_gc_set_stipple( gc, mask );
1107 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1108 gdk_gc_unref( gc );
1109 }
1110
1111 if (is_mono)
1112 {
1113 if (new_mask)
1114 gdk_gc_set_clip_mask( m_textGC, new_mask );
1115 else
1116 gdk_gc_set_clip_mask( m_textGC, mask );
1117 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1118 }
1119 else
1120 {
1121 if (new_mask)
1122 gdk_gc_set_clip_mask( m_penGC, new_mask );
1123 else
1124 gdk_gc_set_clip_mask( m_penGC, mask );
1125 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1126 }
1127 }
1128
1129 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1130 // drawing a mono-bitmap (XBitmap) we use the current text GC
1131 if (is_mono)
1132 {
1133 #ifdef __WXGTK20__
1134 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1135 GdkGC *gc = gdk_gc_new( bitmap );
1136 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1137 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1138 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1139
1140 gdk_draw_drawable( m_window, m_textGC, bitmap, 0, 0, xx, yy, -1, -1 );
1141
1142 gdk_bitmap_unref( bitmap );
1143 gdk_gc_unref( gc );
1144 #else
1145 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );
1146 #endif
1147 }
1148 else
1149 {
1150 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1151 }
1152
1153 // remove mask again if any
1154 if (useMask && mask)
1155 {
1156 if (is_mono)
1157 {
1158 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1159 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1160 if (!m_currentClippingRegion.IsNull())
1161 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1162 }
1163 else
1164 {
1165 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1166 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1167 if (!m_currentClippingRegion.IsNull())
1168 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1169 }
1170 }
1171
1172 if (new_mask)
1173 gdk_bitmap_unref( new_mask );
1174 }
1175
1176 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1177 wxCoord width, wxCoord height,
1178 wxDC *source,
1179 wxCoord xsrc, wxCoord ysrc,
1180 int logical_func,
1181 bool useMask,
1182 wxCoord xsrcMask, wxCoord ysrcMask )
1183 {
1184 wxCHECK_MSG( Ok(), FALSE, wxT("invalid window dc") );
1185
1186 wxCHECK_MSG( source, FALSE, wxT("invalid source dc") );
1187
1188 if (!m_window) return FALSE;
1189
1190 // transform the source DC coords to the device ones
1191 xsrc = source->XLOG2DEV(xsrc);
1192 ysrc = source->YLOG2DEV(ysrc);
1193
1194 wxClientDC *srcDC = (wxClientDC*)source;
1195 wxMemoryDC *memDC = (wxMemoryDC*)source;
1196
1197 bool use_bitmap_method = FALSE;
1198 bool is_mono = FALSE;
1199
1200 // TODO: use the mask origin when drawing transparently
1201 if (xsrcMask == -1 && ysrcMask == -1)
1202 {
1203 xsrcMask = xsrc;
1204 ysrcMask = ysrc;
1205 }
1206
1207 if (srcDC->m_isMemDC)
1208 {
1209 if (!memDC->m_selected.Ok()) return FALSE;
1210
1211 is_mono = (memDC->m_selected.GetDepth() == 1);
1212
1213 // we use the "XCopyArea" way to copy a memory dc into
1214 // a different window if the memory dc BOTH
1215 // a) doesn't have any mask or its mask isn't used
1216 // b) it is clipped
1217 // c) is not 1-bit
1218
1219 if (useMask && (memDC->m_selected.GetMask()))
1220 {
1221 // we HAVE TO use the direct way for memory dcs
1222 // that have mask since the XCopyArea doesn't know
1223 // about masks
1224 use_bitmap_method = TRUE;
1225 }
1226 else if (is_mono)
1227 {
1228 // we HAVE TO use the direct way for memory dcs
1229 // that are bitmaps because XCopyArea doesn't cope
1230 // with different bit depths
1231 use_bitmap_method = TRUE;
1232 }
1233 else if ((xsrc == 0) && (ysrc == 0) &&
1234 (width == memDC->m_selected.GetWidth()) &&
1235 (height == memDC->m_selected.GetHeight()))
1236 {
1237 // we SHOULD use the direct way if all of the bitmap
1238 // in the memory dc is copied in which case XCopyArea
1239 // wouldn't be able able to boost performace by reducing
1240 // the area to be scaled
1241 use_bitmap_method = TRUE;
1242 }
1243 else
1244 {
1245 use_bitmap_method = FALSE;
1246 }
1247 }
1248
1249 CalcBoundingBox( xdest, ydest );
1250 CalcBoundingBox( xdest + width, ydest + height );
1251
1252 // scale/translate size and position
1253 wxCoord xx = XLOG2DEV(xdest);
1254 wxCoord yy = YLOG2DEV(ydest);
1255
1256 wxCoord ww = XLOG2DEVREL(width);
1257 wxCoord hh = YLOG2DEVREL(height);
1258
1259 // compare to current clipping region
1260 if (!m_currentClippingRegion.IsNull())
1261 {
1262 wxRegion tmp( xx,yy,ww,hh );
1263 tmp.Intersect( m_currentClippingRegion );
1264 if (tmp.IsEmpty())
1265 return TRUE;
1266 }
1267
1268 int old_logical_func = m_logicalFunction;
1269 SetLogicalFunction( logical_func );
1270
1271 if (use_bitmap_method)
1272 {
1273 // scale/translate bitmap size
1274 wxCoord bm_width = memDC->m_selected.GetWidth();
1275 wxCoord bm_height = memDC->m_selected.GetHeight();
1276
1277 // Get clip coords for the bitmap. If we don't
1278 // use wxBitmap::Rescale(), which can clip the
1279 // bitmap, these are the same as the original
1280 // coordinates
1281 wxCoord cx = xx;
1282 wxCoord cy = yy;
1283 wxCoord cw = ww;
1284 wxCoord ch = hh;
1285
1286 // interpret userscale of src too
1287 double xsc,ysc;
1288 memDC->GetUserScale(&xsc,&ysc);
1289 bm_width = (int) (bm_width / xsc);
1290 bm_height = (int) (bm_height / ysc);
1291
1292 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1293 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1294
1295 // Scale bitmap if required
1296 wxBitmap use_bitmap;
1297 if ((bm_width != bm_ww) || (bm_height != bm_hh))
1298 {
1299 // This indicates that the blitting code below will get
1300 // a clipped bitmap and therefore needs to move the origin
1301 // accordingly
1302 wxRegion tmp( xx,yy,ww,hh );
1303 tmp.Intersect( m_currentClippingRegion );
1304 tmp.GetBox(cx,cy,cw,ch);
1305
1306 // Scale and clipped bitmap
1307 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1308 }
1309 else
1310 {
1311 // Don't scale bitmap
1312 use_bitmap = memDC->m_selected;
1313 }
1314
1315 // apply mask if any
1316 GdkBitmap *mask = (GdkBitmap *) NULL;
1317 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1318
1319 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1320
1321 if (useMask && mask)
1322 {
1323 if (!m_currentClippingRegion.IsNull())
1324 {
1325 GdkColor col;
1326 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1327 GdkGC *gc = gdk_gc_new( new_mask );
1328 col.pixel = 0;
1329 gdk_gc_set_foreground( gc, &col );
1330 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1331 col.pixel = 0;
1332 gdk_gc_set_background( gc, &col );
1333 col.pixel = 1;
1334 gdk_gc_set_foreground( gc, &col );
1335 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1336 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1337 gdk_gc_set_clip_origin( gc, -cx, -cy );
1338 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1339 gdk_gc_set_stipple( gc, mask );
1340 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1341 gdk_gc_unref( gc );
1342 }
1343
1344 if (is_mono)
1345 {
1346 if (new_mask)
1347 gdk_gc_set_clip_mask( m_textGC, new_mask );
1348 else
1349 gdk_gc_set_clip_mask( m_textGC, mask );
1350 // was: gdk_gc_set_clip_origin( m_textGC, xx, yy );
1351 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1352 }
1353 else
1354 {
1355 if (new_mask)
1356 gdk_gc_set_clip_mask( m_penGC, new_mask );
1357 else
1358 gdk_gc_set_clip_mask( m_penGC, mask );
1359 // was: gdk_gc_set_clip_origin( m_penGC, xx, yy );
1360 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1361 }
1362 }
1363
1364 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1365 // drawing a mono-bitmap (XBitmap) we use the current text GC
1366
1367 if (is_mono)
1368 {
1369 #ifdef __WXGTK20__
1370 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1371 GdkGC *gc = gdk_gc_new( bitmap );
1372 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1373 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1374 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetBitmap(), 0, 0, 0, 0, -1, -1 );
1375
1376 gdk_draw_drawable( m_window, m_textGC, bitmap, xsrc, ysrc, cx, cy, cw, ch );
1377
1378 gdk_bitmap_unref( bitmap );
1379 gdk_gc_unref( gc );
1380 #else
1381 // was: gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, xx, yy, ww, hh );
1382 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, cx, cy, cw, ch );
1383 #endif
1384 }
1385 else
1386 {
1387 // was: gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1388 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1389 }
1390
1391 // remove mask again if any
1392 if (useMask && mask)
1393 {
1394 if (is_mono)
1395 {
1396 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1397 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1398 if (!m_currentClippingRegion.IsNull())
1399 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1400 }
1401 else
1402 {
1403 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1404 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1405 if (!m_currentClippingRegion.IsNull())
1406 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1407 }
1408 }
1409
1410 if (new_mask)
1411 gdk_bitmap_unref( new_mask );
1412 }
1413 else // use_bitmap_method
1414 {
1415 if ((width != ww) || (height != hh))
1416 {
1417 // get clip coords
1418 wxRegion tmp( xx,yy,ww,hh );
1419 tmp.Intersect( m_currentClippingRegion );
1420 wxCoord cx,cy,cw,ch;
1421 tmp.GetBox(cx,cy,cw,ch);
1422
1423 // rescale bitmap
1424 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1425
1426 // draw scaled bitmap
1427 // was: gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1428 gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1429 }
1430 else
1431 {
1432 // No scaling and not a memory dc with a mask either
1433
1434 // copy including child window contents
1435 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1436 gdk_window_copy_area( m_window, m_penGC, xx, yy,
1437 srcDC->GetWindow(),
1438 xsrc, ysrc, width, height );
1439 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1440 }
1441 }
1442
1443 SetLogicalFunction( old_logical_func );
1444
1445 return TRUE;
1446 }
1447
1448 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1449 {
1450 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1451
1452 if (!m_window) return;
1453
1454 if (text.empty()) return;
1455
1456 #ifndef __WXGTK20__
1457 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1458
1459 wxCHECK_RET( font, wxT("invalid font") );
1460 #endif
1461
1462 x = XLOG2DEV(x);
1463 y = YLOG2DEV(y);
1464
1465 #ifdef __WXGTK20__
1466 wxCHECK_RET( m_context, wxT("no Pango context") );
1467 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1468 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1469
1470 #if wxUSE_UNICODE
1471 const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
1472 #else
1473 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
1474 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1475 #endif
1476 pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
1477
1478 int w,h;
1479
1480 if (fabs(m_scaleY - 1.0) < 0.00001)
1481 {
1482 // If there is a user or actually any scale applied to
1483 // the device context, scale the font.
1484
1485 // scale font description
1486 gint oldSize = pango_font_description_get_size( m_fontdesc );
1487 double size = oldSize;
1488 size = size * m_scaleY;
1489 pango_font_description_set_size( m_fontdesc, (gint)size );
1490
1491 // actually apply scaled font
1492 pango_layout_set_font_description( m_layout, m_fontdesc );
1493
1494 pango_layout_get_pixel_size( m_layout, &w, &h );
1495 if ( m_backgroundMode == wxSOLID )
1496 {
1497 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1498 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1499 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1500 }
1501
1502 // Draw layout.
1503 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1504
1505 // reset unscaled size
1506 pango_font_description_set_size( m_fontdesc, oldSize );
1507
1508 // actually apply unscaled font
1509 pango_layout_set_font_description( m_layout, m_fontdesc );
1510 }
1511 else
1512 {
1513 pango_layout_get_pixel_size( m_layout, &w, &h );
1514 if ( m_backgroundMode == wxSOLID )
1515 {
1516 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1517 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1518 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1519 }
1520 // Draw layout.
1521 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1522 }
1523
1524 wxCoord width = w;
1525 wxCoord height = h;
1526
1527 #else // GTK+ 1.x
1528 wxCoord width = gdk_string_width( font, text.mbc_str() );
1529 wxCoord height = font->ascent + font->descent;
1530
1531 if ( m_backgroundMode == wxSOLID )
1532 {
1533 gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() );
1534 gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height );
1535 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
1536 }
1537 gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text.mbc_str() );
1538
1539 /* CMB 17/7/98: simple underline: ignores scaling and underlying
1540 X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
1541 properties (see wxXt implementation) */
1542 if (m_font.GetUnderlined())
1543 {
1544 wxCoord ul_y = y + font->ascent;
1545 if (font->descent > 0) ul_y++;
1546 gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
1547 }
1548 #endif // GTK+ 2.0/1.x
1549
1550 width = wxCoord(width / m_scaleX);
1551 height = wxCoord(height / m_scaleY);
1552 CalcBoundingBox (x + width, y + height);
1553 CalcBoundingBox (x, y);
1554 }
1555
1556 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1557 {
1558 if (angle == 0.0)
1559 {
1560 DrawText(text, x, y);
1561 return;
1562 }
1563
1564 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1565
1566 if (!m_window) return;
1567
1568 #ifdef __WXGTK20__
1569 // implement later without GdkFont for GTK 2.0
1570 return;
1571 #else
1572 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1573
1574 wxCHECK_RET( font, wxT("invalid font") );
1575
1576 // the size of the text
1577 wxCoord w = gdk_string_width( font, text.mbc_str() );
1578 wxCoord h = font->ascent + font->descent;
1579
1580 // draw the string normally
1581 wxBitmap src(w, h);
1582 wxMemoryDC dc;
1583 dc.SelectObject(src);
1584 dc.SetFont(GetFont());
1585 dc.SetBackground(*wxWHITE_BRUSH);
1586 dc.SetBrush(*wxBLACK_BRUSH);
1587 dc.Clear();
1588 dc.DrawText(text, 0, 0);
1589 dc.SelectObject(wxNullBitmap);
1590
1591 // Calculate the size of the rotated bounding box.
1592 double rad = DegToRad(angle);
1593 double dx = cos(rad),
1594 dy = sin(rad);
1595
1596 // the rectngle vertices are counted clockwise with the first one being at
1597 // (0, 0) (or, rather, at (x, y))
1598 double x2 = w*dx,
1599 y2 = -w*dy; // y axis points to the bottom, hence minus
1600 double x4 = h*dy,
1601 y4 = h*dx;
1602 double x3 = x4 + x2,
1603 y3 = y4 + y2;
1604
1605 // calc max and min
1606 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1607 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1608 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1609 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1610
1611 // prepare to blit-with-rotate the bitmap to the DC
1612 wxImage image = src.ConvertToImage();
1613
1614 GdkColor *colText = m_textForegroundColour.GetColor(),
1615 *colBack = m_textBackgroundColour.GetColor();
1616
1617 bool textColSet = TRUE;
1618
1619 unsigned char *data = image.GetData();
1620
1621 // paint pixel by pixel
1622 for ( wxCoord srcX = 0; srcX < w; srcX++ )
1623 {
1624 for ( wxCoord srcY = 0; srcY < h; srcY++ )
1625 {
1626 // transform source coords to dest coords
1627 double r = sqrt((double)srcX*srcX + srcY*srcY);
1628 double angleOrig = atan2((double)srcY, (double)srcX) - rad;
1629 wxCoord dstX = (wxCoord)(r*cos(angleOrig) + 0.5),
1630 dstY = (wxCoord)(r*sin(angleOrig) + 0.5);
1631
1632 // black pixel?
1633 bool textPixel = data[(srcY*w + srcX)*3] == 0;
1634 if ( textPixel || (m_backgroundMode == wxSOLID) )
1635 {
1636 // change colour if needed
1637 if ( textPixel != textColSet )
1638 {
1639 gdk_gc_set_foreground( m_textGC, textPixel ? colText
1640 : colBack );
1641
1642 textColSet = textPixel;
1643 }
1644
1645 // don't use DrawPoint() because it uses the current pen
1646 // colour, and we don't need it here
1647 gdk_draw_point( m_window, m_textGC,
1648 XLOG2DEV(x) + dstX, YLOG2DEV(y) + dstY );
1649 }
1650 }
1651 }
1652
1653 // it would be better to draw with non underlined font and draw the line
1654 // manually here (it would be more straight...)
1655 #if 0
1656 if ( m_font.GetUnderlined() )
1657 {
1658 gdk_draw_line( m_window, m_textGC,
1659 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1660 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1661 }
1662 #endif // 0
1663
1664 // restore the font colour
1665 gdk_gc_set_foreground( m_textGC, colText );
1666
1667 // update the bounding box
1668 CalcBoundingBox(x + minX, y + minY);
1669 CalcBoundingBox(x + maxX, y + maxY);
1670 #endif
1671 }
1672
1673 void wxWindowDC::DoGetTextExtent(const wxString &string,
1674 wxCoord *width, wxCoord *height,
1675 wxCoord *descent, wxCoord *externalLeading,
1676 wxFont *theFont) const
1677 {
1678 if (string.IsEmpty())
1679 {
1680 if (width) (*width) = 0;
1681 if (height) (*height) = 0;
1682 return;
1683 }
1684
1685 #ifdef __WXGTK20__
1686 // Set new font description
1687 if (theFont)
1688 pango_layout_set_font_description( m_layout, theFont->GetNativeFontInfo()->description );
1689
1690 // Set layout's text
1691 #if wxUSE_UNICODE
1692 const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
1693 const char *dataUTF8 = (const char *)data;
1694 #else
1695 const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
1696 if ( !wdata )
1697 return;
1698 const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
1699 const char *dataUTF8 = (const char *)data;
1700 #endif
1701
1702 if ( !dataUTF8 )
1703 {
1704 // hardly ideal, but what else can we do if conversion failed?
1705 return;
1706 }
1707
1708 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1709
1710 int w,h;
1711 pango_layout_get_pixel_size( m_layout, &w, &h );
1712
1713 if (width)
1714 *width = (wxCoord) w;
1715 if (height)
1716 *height = (wxCoord) h;
1717 if (descent)
1718 {
1719 // Do something about metrics here. TODO.
1720 *descent = 0;
1721 }
1722 if (externalLeading)
1723 *externalLeading = 0; // ??
1724
1725 // Reset old font description
1726 if (theFont)
1727 pango_layout_set_font_description( m_layout, m_fontdesc );
1728 #else // GTK+ 1.x
1729 wxFont fontToUse = m_font;
1730 if (theFont) fontToUse = *theFont;
1731
1732 GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
1733 if (width) (*width) = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
1734 if (height) (*height) = wxCoord((font->ascent + font->descent) / m_scaleY);
1735 if (descent) (*descent) = wxCoord(font->descent / m_scaleY);
1736 if (externalLeading) (*externalLeading) = 0; // ??
1737 #endif // GTK+ 2/1
1738 }
1739
1740 wxCoord wxWindowDC::GetCharWidth() const
1741 {
1742 #ifdef __WXGTK20__
1743 pango_layout_set_text( m_layout, "H", 1 );
1744 int w,h;
1745 pango_layout_get_pixel_size( m_layout, &w, &h );
1746 return w;
1747 #else
1748 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1749 wxCHECK_MSG( font, -1, wxT("invalid font") );
1750
1751 return wxCoord(gdk_string_width( font, "H" ) / m_scaleX);
1752 #endif
1753 }
1754
1755 wxCoord wxWindowDC::GetCharHeight() const
1756 {
1757 #ifdef __WXGTK20__
1758 pango_layout_set_text( m_layout, "H", 1 );
1759 int w,h;
1760 pango_layout_get_pixel_size( m_layout, &w, &h );
1761 return h;
1762 #else
1763 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1764 wxCHECK_MSG( font, -1, wxT("invalid font") );
1765
1766 return wxCoord((font->ascent + font->descent) / m_scaleY);
1767 #endif
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 #ifdef __WXGTK20__
1813 if (m_font.Ok())
1814 {
1815 if (m_fontdesc)
1816 pango_font_description_free( m_fontdesc );
1817
1818 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1819
1820
1821 if (m_owner)
1822 {
1823 PangoContext *oldContext = m_context;
1824
1825 // We might want to use the X11 context for faster
1826 // rendering on screen
1827 if (m_font.GetNoAntiAliasing())
1828 m_context = m_owner->GtkGetPangoX11Context();
1829 else
1830 m_context = m_owner->GtkGetPangoDefaultContext();
1831
1832 // If we switch back/forth between different contexts
1833 // we also have to create a new layout. I think so,
1834 // at least, and it doesn't hurt to do it.
1835 if (oldContext != m_context)
1836 {
1837 if (m_layout)
1838 g_object_unref( G_OBJECT( m_layout ) );
1839
1840 m_layout = pango_layout_new( m_context );
1841 }
1842 }
1843
1844 pango_layout_set_font_description( m_layout, m_fontdesc );
1845 }
1846 #endif
1847 }
1848
1849 void wxWindowDC::SetPen( const wxPen &pen )
1850 {
1851 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1852
1853 if (m_pen == pen) return;
1854
1855 m_pen = pen;
1856
1857 if (!m_pen.Ok()) return;
1858
1859 if (!m_window) return;
1860
1861 gint width = m_pen.GetWidth();
1862 if (width <= 0)
1863 {
1864 // CMB: if width is non-zero scale it with the dc
1865 width = 1;
1866 }
1867 else
1868 {
1869 // X doesn't allow different width in x and y and so we take
1870 // the average
1871 double w = 0.5 +
1872 ( fabs((double) XLOG2DEVREL(width)) +
1873 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1874 width = (int)w;
1875 if ( !width )
1876 {
1877 // width can't be 0 or an internal GTK error occurs inside
1878 // gdk_gc_set_dashes() below
1879 width = 1;
1880 }
1881 }
1882
1883 static const wxGTKDash dotted[] = {1, 1};
1884 static const wxGTKDash short_dashed[] = {2, 2};
1885 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1886 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1887
1888 // We express dash pattern in pen width unit, so we are
1889 // independent of zoom factor and so on...
1890 int req_nb_dash;
1891 const wxGTKDash *req_dash;
1892
1893 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1894 switch (m_pen.GetStyle())
1895 {
1896 case wxUSER_DASH:
1897 {
1898 lineStyle = GDK_LINE_ON_OFF_DASH;
1899 req_nb_dash = m_pen.GetDashCount();
1900 req_dash = (wxGTKDash*)m_pen.GetDash();
1901 break;
1902 }
1903 case wxDOT:
1904 {
1905 lineStyle = GDK_LINE_ON_OFF_DASH;
1906 req_nb_dash = 2;
1907 req_dash = dotted;
1908 break;
1909 }
1910 case wxLONG_DASH:
1911 {
1912 lineStyle = GDK_LINE_ON_OFF_DASH;
1913 req_nb_dash = 2;
1914 req_dash = wxCoord_dashed;
1915 break;
1916 }
1917 case wxSHORT_DASH:
1918 {
1919 lineStyle = GDK_LINE_ON_OFF_DASH;
1920 req_nb_dash = 2;
1921 req_dash = short_dashed;
1922 break;
1923 }
1924 case wxDOT_DASH:
1925 {
1926 // lineStyle = GDK_LINE_DOUBLE_DASH;
1927 lineStyle = GDK_LINE_ON_OFF_DASH;
1928 req_nb_dash = 4;
1929 req_dash = dotted_dashed;
1930 break;
1931 }
1932
1933 case wxTRANSPARENT:
1934 case wxSTIPPLE_MASK_OPAQUE:
1935 case wxSTIPPLE:
1936 case wxSOLID:
1937 default:
1938 {
1939 lineStyle = GDK_LINE_SOLID;
1940 req_dash = (wxGTKDash*)NULL;
1941 req_nb_dash = 0;
1942 break;
1943 }
1944 }
1945
1946 #if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
1947 if (req_dash && req_nb_dash)
1948 {
1949 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1950 if (real_req_dash)
1951 {
1952 for (int i = 0; i < req_nb_dash; i++)
1953 real_req_dash[i] = req_dash[i] * width;
1954 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1955 delete[] real_req_dash;
1956 }
1957 else
1958 {
1959 // No Memory. We use non-scaled dash pattern...
1960 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1961 }
1962 }
1963 #endif // GTK+ > 1.0
1964
1965 GdkCapStyle capStyle = GDK_CAP_ROUND;
1966 switch (m_pen.GetCap())
1967 {
1968 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1969 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1970 case wxCAP_ROUND:
1971 default:
1972 {
1973 if (width <= 1)
1974 {
1975 width = 0;
1976 capStyle = GDK_CAP_NOT_LAST;
1977 }
1978 else
1979 {
1980 capStyle = GDK_CAP_ROUND;
1981 }
1982 break;
1983 }
1984 }
1985
1986 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1987 switch (m_pen.GetJoin())
1988 {
1989 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1990 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1991 case wxJOIN_ROUND:
1992 default: { joinStyle = GDK_JOIN_ROUND; break; }
1993 }
1994
1995 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1996
1997 m_pen.GetColour().CalcPixel( m_cmap );
1998 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1999 }
2000
2001 void wxWindowDC::SetBrush( const wxBrush &brush )
2002 {
2003 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2004
2005 if (m_brush == brush) return;
2006
2007 m_brush = brush;
2008
2009 if (!m_brush.Ok()) return;
2010
2011 if (!m_window) return;
2012
2013 m_brush.GetColour().CalcPixel( m_cmap );
2014 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2015
2016 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2017
2018 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2019 {
2020 if (m_brush.GetStipple()->GetPixmap())
2021 {
2022 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2023 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2024 }
2025 else
2026 {
2027 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2028 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetBitmap() );
2029 }
2030 }
2031
2032 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2033 {
2034 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2035 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2036 }
2037
2038 if (IS_HATCH(m_brush.GetStyle()))
2039 {
2040 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2041 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2042 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2043 }
2044 }
2045
2046 void wxWindowDC::SetBackground( const wxBrush &brush )
2047 {
2048 /* CMB 21/7/98: Added SetBackground. Sets background brush
2049 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2050
2051 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2052
2053 if (m_backgroundBrush == brush) return;
2054
2055 m_backgroundBrush = brush;
2056
2057 if (!m_backgroundBrush.Ok()) return;
2058
2059 if (!m_window) return;
2060
2061 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2062 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2063 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2064 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2065 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2066
2067 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2068
2069 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2070 {
2071 if (m_backgroundBrush.GetStipple()->GetPixmap())
2072 {
2073 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2074 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2075 }
2076 else
2077 {
2078 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2079 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetBitmap() );
2080 }
2081 }
2082
2083 if (IS_HATCH(m_backgroundBrush.GetStyle()))
2084 {
2085 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2086 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2087 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2088 }
2089 }
2090
2091 void wxWindowDC::SetLogicalFunction( int function )
2092 {
2093 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2094
2095 if (m_logicalFunction == function)
2096 return;
2097
2098 // VZ: shouldn't this be a CHECK?
2099 if (!m_window)
2100 return;
2101
2102 GdkFunction mode;
2103 switch (function)
2104 {
2105 case wxXOR: mode = GDK_XOR; break;
2106 case wxINVERT: mode = GDK_INVERT; break;
2107 #if (GTK_MINOR_VERSION > 0) || (GTK_MAJOR_VERSION > 1)
2108 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2109 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2110 case wxCLEAR: mode = GDK_CLEAR; break;
2111 case wxSET: mode = GDK_SET; break;
2112 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2113 case wxAND: mode = GDK_AND; break;
2114 case wxOR: mode = GDK_OR; break;
2115 case wxEQUIV: mode = GDK_EQUIV; break;
2116 case wxNAND: mode = GDK_NAND; break;
2117 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2118 case wxCOPY: mode = GDK_COPY; break;
2119 case wxNO_OP: mode = GDK_NOOP; break;
2120 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2121
2122 // unsupported by GTK
2123 case wxNOR: mode = GDK_COPY; break;
2124 #endif // GTK+ > 1.0
2125 default:
2126 wxFAIL_MSG( wxT("unsupported logical function") );
2127 mode = GDK_COPY;
2128 }
2129
2130 m_logicalFunction = function;
2131
2132 gdk_gc_set_function( m_penGC, mode );
2133 gdk_gc_set_function( m_brushGC, mode );
2134
2135 // to stay compatible with wxMSW, we don't apply ROPs to the text
2136 // operations (i.e. DrawText/DrawRotatedText).
2137 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2138 gdk_gc_set_function( m_textGC, mode );
2139 }
2140
2141 void wxWindowDC::SetTextForeground( const wxColour &col )
2142 {
2143 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2144
2145 // don't set m_textForegroundColour to an invalid colour as we'd crash
2146 // later then (we use m_textForegroundColour.GetColor() without checking
2147 // in a few places)
2148 if ( !col.Ok() || (m_textForegroundColour == col) )
2149 return;
2150
2151 m_textForegroundColour = col;
2152
2153 if ( m_window )
2154 {
2155 m_textForegroundColour.CalcPixel( m_cmap );
2156 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2157 }
2158 }
2159
2160 void wxWindowDC::SetTextBackground( const wxColour &col )
2161 {
2162 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2163
2164 // same as above
2165 if ( !col.Ok() || (m_textBackgroundColour == col) )
2166 return;
2167
2168 m_textBackgroundColour = col;
2169
2170 if ( m_window )
2171 {
2172 m_textBackgroundColour.CalcPixel( m_cmap );
2173 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2174 }
2175 }
2176
2177 void wxWindowDC::SetBackgroundMode( int mode )
2178 {
2179 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2180
2181 m_backgroundMode = mode;
2182
2183 if (!m_window) return;
2184
2185 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2186 // transparent/solid background mode
2187
2188 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2189 {
2190 gdk_gc_set_fill( m_brushGC,
2191 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2192 }
2193 }
2194
2195 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2196 {
2197 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2198 }
2199
2200 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2201 {
2202 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2203
2204 if (!m_window) return;
2205
2206 wxRect rect;
2207 rect.x = XLOG2DEV(x);
2208 rect.y = YLOG2DEV(y);
2209 rect.width = XLOG2DEVREL(width);
2210 rect.height = YLOG2DEVREL(height);
2211
2212 if (!m_currentClippingRegion.IsNull())
2213 m_currentClippingRegion.Intersect( rect );
2214 else
2215 m_currentClippingRegion.Union( rect );
2216
2217 #if USE_PAINT_REGION
2218 if (!m_paintClippingRegion.IsNull())
2219 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2220 #endif
2221
2222 wxCoord xx, yy, ww, hh;
2223 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2224 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2225
2226 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2227 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2228 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2229 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2230 }
2231
2232 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2233 {
2234 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2235
2236 if (region.Empty())
2237 {
2238 DestroyClippingRegion();
2239 return;
2240 }
2241
2242 if (!m_window) return;
2243
2244 if (!m_currentClippingRegion.IsNull())
2245 m_currentClippingRegion.Intersect( region );
2246 else
2247 m_currentClippingRegion.Union( region );
2248
2249 #if USE_PAINT_REGION
2250 if (!m_paintClippingRegion.IsNull())
2251 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2252 #endif
2253
2254 wxCoord xx, yy, ww, hh;
2255 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2256 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2257
2258 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2259 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2260 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2261 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2262 }
2263
2264 void wxWindowDC::DestroyClippingRegion()
2265 {
2266 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2267
2268 wxDC::DestroyClippingRegion();
2269
2270 m_currentClippingRegion.Clear();
2271
2272 #if USE_PAINT_REGION
2273 if (!m_paintClippingRegion.IsEmpty())
2274 m_currentClippingRegion.Union( m_paintClippingRegion );
2275 #endif
2276
2277 if (!m_window) return;
2278
2279 if (m_currentClippingRegion.IsEmpty())
2280 {
2281 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2282 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2283 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2284 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2285 }
2286 else
2287 {
2288 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2289 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2290 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2291 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2292 }
2293 }
2294
2295 void wxWindowDC::Destroy()
2296 {
2297 if (m_penGC) wxFreePoolGC( m_penGC );
2298 m_penGC = (GdkGC*) NULL;
2299 if (m_brushGC) wxFreePoolGC( m_brushGC );
2300 m_brushGC = (GdkGC*) NULL;
2301 if (m_textGC) wxFreePoolGC( m_textGC );
2302 m_textGC = (GdkGC*) NULL;
2303 if (m_bgGC) wxFreePoolGC( m_bgGC );
2304 m_bgGC = (GdkGC*) NULL;
2305 }
2306
2307 void wxWindowDC::ComputeScaleAndOrigin()
2308 {
2309 /* CMB: copy scale to see if it changes */
2310 double origScaleX = m_scaleX;
2311 double origScaleY = m_scaleY;
2312
2313 wxDC::ComputeScaleAndOrigin();
2314
2315 /* CMB: if scale has changed call SetPen to recalulate the line width */
2316 if ((m_scaleX != origScaleX || m_scaleY != origScaleY) &&
2317 (m_pen.Ok()))
2318 {
2319 /* this is a bit artificial, but we need to force wxDC to think
2320 the pen has changed */
2321 wxPen pen = m_pen;
2322 m_pen = wxNullPen;
2323 SetPen( pen );
2324 }
2325 }
2326
2327 // Resolution in pixels per logical inch
2328 wxSize wxWindowDC::GetPPI() const
2329 {
2330 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2331 }
2332
2333 int wxWindowDC::GetDepth() const
2334 {
2335 wxFAIL_MSG(wxT("not implemented"));
2336
2337 return -1;
2338 }
2339
2340
2341 //-----------------------------------------------------------------------------
2342 // wxPaintDC
2343 //-----------------------------------------------------------------------------
2344
2345 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2346
2347 // Limit the paint region to the window size. Sometimes
2348 // the paint region is too big, and this risks X11 errors
2349 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2350 {
2351 wxRect originalRect = region.GetBox();
2352 wxRect rect(originalRect);
2353 if (rect.width + rect.x > sz.x)
2354 rect.width = sz.x - rect.x;
2355 if (rect.height + rect.y > sz.y)
2356 rect.height = sz.y - rect.y;
2357 if (rect != originalRect)
2358 {
2359 region = wxRegion(rect);
2360 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2361 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2362 rect.x, rect.y, rect.width, rect.height);
2363 }
2364 }
2365
2366 wxPaintDC::wxPaintDC( wxWindow *win )
2367 : wxClientDC( win )
2368 {
2369 #if USE_PAINT_REGION
2370 if (!win->m_clipPaintRegion)
2371 return;
2372
2373 wxSize sz = win->GetSize();
2374 m_paintClippingRegion = win->GetUpdateRegion();
2375 wxLimitRegionToSize(m_paintClippingRegion, sz);
2376
2377 GdkRegion *region = m_paintClippingRegion.GetRegion();
2378 if ( region )
2379 {
2380 m_currentClippingRegion.Union( m_paintClippingRegion );
2381 wxLimitRegionToSize(m_currentClippingRegion, sz);
2382
2383 if (sz.x <= 0 || sz.y <= 0)
2384 return ;
2385
2386 gdk_gc_set_clip_region( m_penGC, region );
2387 gdk_gc_set_clip_region( m_brushGC, region );
2388 gdk_gc_set_clip_region( m_textGC, region );
2389 gdk_gc_set_clip_region( m_bgGC, region );
2390 }
2391 #endif // USE_PAINT_REGION
2392 }
2393
2394 //-----------------------------------------------------------------------------
2395 // wxClientDC
2396 //-----------------------------------------------------------------------------
2397
2398 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2399
2400 wxClientDC::wxClientDC( wxWindow *win )
2401 : wxWindowDC( win )
2402 {
2403 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2404
2405 #ifdef __WXUNIVERSAL__
2406 wxPoint ptOrigin = win->GetClientAreaOrigin();
2407 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2408 wxSize size = win->GetClientSize();
2409 SetClippingRegion(wxPoint(0, 0), size);
2410 #endif // __WXUNIVERSAL__
2411 }
2412
2413 void wxClientDC::DoGetSize(int *width, int *height) const
2414 {
2415 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2416
2417 m_owner->GetClientSize( width, height );
2418 }
2419
2420 // ----------------------------------------------------------------------------
2421 // wxDCModule
2422 // ----------------------------------------------------------------------------
2423
2424 class wxDCModule : public wxModule
2425 {
2426 public:
2427 bool OnInit();
2428 void OnExit();
2429
2430 private:
2431 DECLARE_DYNAMIC_CLASS(wxDCModule)
2432 };
2433
2434 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2435
2436 bool wxDCModule::OnInit()
2437 {
2438 wxInitGCPool();
2439 return TRUE;
2440 }
2441
2442 void wxDCModule::OnExit()
2443 {
2444 wxCleanUpGCPool();
2445 }
wxWidgets (Impactor)