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rename OnResize() to OnSize() to avoid conflict with base class OnResize(void) virtual
[wxWidgets.git] / src / gtk / dcclient.cpp
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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/gtk/dcclient.cpp
3// Purpose:
4// Author: Robert Roebling
5// RCS-ID: $Id$
6// Copyright: (c) 1998 Robert Roebling, Chris Breeze
7// Licence: wxWindows licence
8/////////////////////////////////////////////////////////////////////////////
9
10// For compilers that support precompilation, includes "wx.h".
11#include "wx/wxprec.h"
12
13#ifdef __VMS
14#define XCopyPlane XCOPYPLANE
15#endif
16
17#include "wx/dcclient.h"
18
19#ifndef WX_PRECOMP
20 #include "wx/window.h"
21 #include "wx/log.h"
22 #include "wx/dcmemory.h"
23 #include "wx/math.h" // for floating-point functions
24 #include "wx/image.h"
25 #include "wx/module.h"
26#endif
27
28#include "wx/fontutil.h"
29#include "wx/scrolwin.h"
30
31#include "wx/gtk/win_gtk.h"
32#include "wx/gtk/private.h"
33
34#include <gdk/gdkx.h>
35
36//-----------------------------------------------------------------------------
37// local defines
38//-----------------------------------------------------------------------------
39
40#define USE_PAINT_REGION 1
41
42//-----------------------------------------------------------------------------
43// local data
44//-----------------------------------------------------------------------------
45
46#include "bdiag.xbm"
47#include "fdiag.xbm"
48#include "cdiag.xbm"
49#include "horiz.xbm"
50#include "verti.xbm"
51#include "cross.xbm"
52#define num_hatches 6
53
54#define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
55#define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
56
57
58static GdkPixmap *hatches[num_hatches];
59static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
60
61extern GtkWidget *wxGetRootWindow();
62
63//-----------------------------------------------------------------------------
64// constants
65//-----------------------------------------------------------------------------
66
67const double RAD2DEG = 180.0 / M_PI;
68
69// ----------------------------------------------------------------------------
70// private functions
71// ----------------------------------------------------------------------------
72
73static inline double dmax(double a, double b) { return a > b ? a : b; }
74static inline double dmin(double a, double b) { return a < b ? a : b; }
75
76static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
77
78//-----------------------------------------------------------------------------
79// temporary implementation of the missing GDK function
80//-----------------------------------------------------------------------------
81
82#include "gdk/gdkprivate.h"
83
84static
85void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94{
95 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
96 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
97 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
98
99 gint src_width, src_height;
100 gdk_drawable_get_size(src, &src_width, &src_height);
101 if (width == -1) width = src_width;
102 if (height == -1) height = src_height;
103
104 XCopyPlane( GDK_WINDOW_XDISPLAY(drawable),
105 GDK_WINDOW_XID(src),
106 GDK_WINDOW_XID(drawable),
107 GDK_GC_XGC(gc),
108 xsrc, ysrc,
109 width, height,
110 0, 0,
111 1 );
112}
113
114//-----------------------------------------------------------------------------
115// Implement Pool of Graphic contexts. Creating them takes too much time.
116//-----------------------------------------------------------------------------
117
118enum wxPoolGCType
119{
120 wxGC_ERROR = 0,
121 wxTEXT_MONO,
122 wxBG_MONO,
123 wxPEN_MONO,
124 wxBRUSH_MONO,
125 wxTEXT_COLOUR,
126 wxBG_COLOUR,
127 wxPEN_COLOUR,
128 wxBRUSH_COLOUR,
129 wxTEXT_SCREEN,
130 wxBG_SCREEN,
131 wxPEN_SCREEN,
132 wxBRUSH_SCREEN
133};
134
135struct wxGC
136{
137 GdkGC *m_gc;
138 wxPoolGCType m_type;
139 bool m_used;
140};
141
142#define GC_POOL_ALLOC_SIZE 100
143
144static int wxGCPoolSize = 0;
145
146static wxGC *wxGCPool = NULL;
147
148static void wxInitGCPool()
149{
150 // This really could wait until the first call to
151 // wxGetPoolGC, but we will make the first allocation
152 // now when other initialization is being performed.
153
154 // Set initial pool size.
155 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
156
157 // Allocate initial pool.
158 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
159 if (wxGCPool == NULL)
160 {
161 // If we cannot malloc, then fail with error
162 // when debug is enabled. If debug is not enabled,
163 // the problem will eventually get caught
164 // in wxGetPoolGC.
165 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
166 return;
167 }
168
169 // Zero initial pool.
170 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
171}
172
173static void wxCleanUpGCPool()
174{
175 for (int i = 0; i < wxGCPoolSize; i++)
176 {
177 if (wxGCPool[i].m_gc)
178 g_object_unref (wxGCPool[i].m_gc);
179 }
180
181 free(wxGCPool);
182 wxGCPool = NULL;
183 wxGCPoolSize = 0;
184}
185
186static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
187{
188 wxGC *pptr;
189
190 // Look for an available GC.
191 for (int i = 0; i < wxGCPoolSize; i++)
192 {
193 if (!wxGCPool[i].m_gc)
194 {
195 wxGCPool[i].m_gc = gdk_gc_new( window );
196 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
197 wxGCPool[i].m_type = type;
198 wxGCPool[i].m_used = false;
199 }
200 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
201 {
202 wxGCPool[i].m_used = true;
203 return wxGCPool[i].m_gc;
204 }
205 }
206
207 // We did not find an available GC.
208 // We need to grow the GC pool.
209 pptr = (wxGC *)realloc(wxGCPool,
210 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
211 if (pptr != NULL)
212 {
213 // Initialize newly allocated pool.
214 wxGCPool = pptr;
215 memset(&wxGCPool[wxGCPoolSize], 0,
216 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
217
218 // Initialize entry we will return.
219 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
220 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
221 wxGCPool[wxGCPoolSize].m_type = type;
222 wxGCPool[wxGCPoolSize].m_used = true;
223
224 // Set new value of pool size.
225 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
226
227 // Return newly allocated entry.
228 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
229 }
230
231 // The realloc failed. Fall through to error.
232 wxFAIL_MSG( wxT("No GC available") );
233
234 return (GdkGC*) NULL;
235}
236
237static void wxFreePoolGC( GdkGC *gc )
238{
239 for (int i = 0; i < wxGCPoolSize; i++)
240 {
241 if (wxGCPool[i].m_gc == gc)
242 {
243 wxGCPool[i].m_used = false;
244 return;
245 }
246 }
247
248 wxFAIL_MSG( wxT("Wrong GC") );
249}
250
251//-----------------------------------------------------------------------------
252// wxWindowDC
253//-----------------------------------------------------------------------------
254
255IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
256
257wxWindowDC::wxWindowDC()
258{
259 m_penGC = (GdkGC *) NULL;
260 m_brushGC = (GdkGC *) NULL;
261 m_textGC = (GdkGC *) NULL;
262 m_bgGC = (GdkGC *) NULL;
263 m_cmap = (GdkColormap *) NULL;
264 m_isMemDC = false;
265 m_isScreenDC = false;
266 m_owner = (wxWindow *)NULL;
267 m_context = (PangoContext *)NULL;
268 m_layout = (PangoLayout *)NULL;
269 m_fontdesc = (PangoFontDescription *)NULL;
270}
271
272wxWindowDC::wxWindowDC( wxWindow *window )
273{
274 wxASSERT_MSG( window, wxT("DC needs a window") );
275
276 m_penGC = (GdkGC *) NULL;
277 m_brushGC = (GdkGC *) NULL;
278 m_textGC = (GdkGC *) NULL;
279 m_bgGC = (GdkGC *) NULL;
280 m_cmap = (GdkColormap *) NULL;
281 m_owner = (wxWindow *)NULL;
282 m_isMemDC = false;
283 m_isScreenDC = false;
284 m_font = window->GetFont();
285
286 GtkWidget *widget = window->m_wxwindow;
287
288 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
289 // code should still be able to create wxClientDCs for them, so we will
290 // use the parent window here then.
291 if ( !widget )
292 {
293 window = window->GetParent();
294 widget = window->m_wxwindow;
295 }
296
297 wxASSERT_MSG( widget, wxT("DC needs a widget") );
298
299 m_context = window->GtkGetPangoDefaultContext();
300 m_layout = pango_layout_new( m_context );
301 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
302
303 GtkPizza *pizza = GTK_PIZZA( widget );
304 m_window = pizza->bin_window;
305
306 // Window not realized ?
307 if (!m_window)
308 {
309 // Don't report problems as per MSW.
310 m_ok = true;
311
312 return;
313 }
314
315 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
316
317 SetUpDC();
318
319 /* this must be done after SetUpDC, bacause SetUpDC calls the
320 repective SetBrush, SetPen, SetBackground etc functions
321 to set up the DC. SetBackground call m_owner->SetBackground
322 and this might not be desired as the standard dc background
323 is white whereas a window might assume gray to be the
324 standard (as e.g. wxStatusBar) */
325
326 m_owner = window;
327
328 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
329 {
330 // reverse sense
331 m_signX = -1;
332
333 // origin in the upper right corner
334 m_deviceOriginX = m_owner->GetClientSize().x;
335 }
336}
337
338wxWindowDC::~wxWindowDC()
339{
340 Destroy();
341
342 if (m_layout)
343 g_object_unref (m_layout);
344 if (m_fontdesc)
345 pango_font_description_free( m_fontdesc );
346}
347
348void wxWindowDC::SetUpDC()
349{
350 m_ok = true;
351
352 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
353
354 if (m_isScreenDC)
355 {
356 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
357 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
358 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
359 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
360 }
361 else
362 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
363 {
364 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
365 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
366 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
367 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
368 }
369 else
370 {
371 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
372 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
373 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
374 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
375 }
376
377 /* background colour */
378 m_backgroundBrush = *wxWHITE_BRUSH;
379 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
380#ifdef __WXGTK24__
381 const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
382#else
383 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
384#endif
385
386 /* m_textGC */
387 m_textForegroundColour.CalcPixel( m_cmap );
388 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
389
390 m_textBackgroundColour.CalcPixel( m_cmap );
391 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
392
393 gdk_gc_set_fill( m_textGC, GDK_SOLID );
394
395 /* m_penGC */
396 m_pen.GetColour().CalcPixel( m_cmap );
397 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
398 gdk_gc_set_background( m_penGC, bg_col );
399
400 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
401
402 /* m_brushGC */
403 m_brush.GetColour().CalcPixel( m_cmap );
404 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
405 gdk_gc_set_background( m_brushGC, bg_col );
406
407 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
408
409 /* m_bgGC */
410 gdk_gc_set_background( m_bgGC, bg_col );
411 gdk_gc_set_foreground( m_bgGC, bg_col );
412
413 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
414
415 /* ROPs */
416 gdk_gc_set_function( m_textGC, GDK_COPY );
417 gdk_gc_set_function( m_brushGC, GDK_COPY );
418 gdk_gc_set_function( m_penGC, GDK_COPY );
419
420 /* clipping */
421 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
422 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
423 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
424 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
425
426 if (!hatch_bitmap)
427 {
428 hatch_bitmap = hatches;
429 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
430 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
431 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
432 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
433 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
434 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
435 }
436}
437
438void wxWindowDC::DoGetSize( int* width, int* height ) const
439{
440 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
441
442 m_owner->GetSize(width, height);
443}
444
445extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
446 const wxColour & col, int style);
447
448bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
449 const wxColour& col, int style)
450{
451 return wxDoFloodFill(this, x, y, col, style);
452}
453
454bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
455{
456 // Generic (and therefore rather inefficient) method.
457 // Could be improved.
458 wxMemoryDC memdc;
459 wxBitmap bitmap(1, 1);
460 memdc.SelectObject(bitmap);
461 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
462 memdc.SelectObject(wxNullBitmap);
463
464 wxImage image = bitmap.ConvertToImage();
465 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
466 return true;
467}
468
469void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
470{
471 wxCHECK_RET( Ok(), wxT("invalid window dc") );
472
473 if (m_pen.GetStyle() != wxTRANSPARENT)
474 {
475 if (m_window)
476 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
477
478 CalcBoundingBox(x1, y1);
479 CalcBoundingBox(x2, y2);
480 }
481}
482
483void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
484{
485 wxCHECK_RET( Ok(), wxT("invalid window dc") );
486
487 if (m_pen.GetStyle() != wxTRANSPARENT)
488 {
489 int w = 0;
490 int h = 0;
491 GetSize( &w, &h );
492 wxCoord xx = XLOG2DEV(x);
493 wxCoord yy = YLOG2DEV(y);
494 if (m_window)
495 {
496 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
497 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
498 }
499 }
500}
501
502void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
503 wxCoord xc, wxCoord yc )
504{
505 wxCHECK_RET( Ok(), wxT("invalid window dc") );
506
507 wxCoord xx1 = XLOG2DEV(x1);
508 wxCoord yy1 = YLOG2DEV(y1);
509 wxCoord xx2 = XLOG2DEV(x2);
510 wxCoord yy2 = YLOG2DEV(y2);
511 wxCoord xxc = XLOG2DEV(xc);
512 wxCoord yyc = YLOG2DEV(yc);
513 double dx = xx1 - xxc;
514 double dy = yy1 - yyc;
515 double radius = sqrt((double)(dx*dx+dy*dy));
516 wxCoord r = (wxCoord)radius;
517 double radius1, radius2;
518
519 if (xx1 == xx2 && yy1 == yy2)
520 {
521 radius1 = 0.0;
522 radius2 = 360.0;
523 }
524 else if ( wxIsNullDouble(radius) )
525 {
526 radius1 =
527 radius2 = 0.0;
528 }
529 else
530 {
531 radius1 = (xx1 - xxc == 0) ?
532 (yy1 - yyc < 0) ? 90.0 : -90.0 :
533 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
534 radius2 = (xx2 - xxc == 0) ?
535 (yy2 - yyc < 0) ? 90.0 : -90.0 :
536 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
537 }
538 wxCoord alpha1 = wxCoord(radius1 * 64.0);
539 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
540 while (alpha2 <= 0) alpha2 += 360*64;
541 while (alpha1 > 360*64) alpha1 -= 360*64;
542
543 if (m_window)
544 {
545 if (m_brush.GetStyle() != wxTRANSPARENT)
546 {
547 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
548 {
549 gdk_gc_set_ts_origin( m_textGC,
550 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
551 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
552 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
553 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
554 } else
555 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
556 {
557 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
558 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
559 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
560 } else
561 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
562 {
563 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
564 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
565 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
566 } else
567 if (m_brush.GetStyle() == wxSTIPPLE)
568 {
569 gdk_gc_set_ts_origin( m_brushGC,
570 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
571 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
572 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
573 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
574 }
575 else
576 {
577 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
578 }
579 }
580
581 if (m_pen.GetStyle() != wxTRANSPARENT)
582 {
583 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
584
585 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
586 {
587 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
588 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
589 }
590 }
591 }
592
593 CalcBoundingBox (x1, y1);
594 CalcBoundingBox (x2, y2);
595}
596
597void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
598{
599 wxCHECK_RET( Ok(), wxT("invalid window dc") );
600
601 wxCoord xx = XLOG2DEV(x);
602 wxCoord yy = YLOG2DEV(y);
603 wxCoord ww = m_signX * XLOG2DEVREL(width);
604 wxCoord hh = m_signY * YLOG2DEVREL(height);
605
606 // CMB: handle -ve width and/or height
607 if (ww < 0) { ww = -ww; xx = xx - ww; }
608 if (hh < 0) { hh = -hh; yy = yy - hh; }
609
610 if (m_window)
611 {
612 wxCoord start = wxCoord(sa * 64.0);
613 wxCoord end = wxCoord((ea-sa) * 64.0);
614
615 if (m_brush.GetStyle() != wxTRANSPARENT)
616 {
617 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
618 {
619 gdk_gc_set_ts_origin( m_textGC,
620 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
621 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
622 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
623 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
624 } else
625 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
626 {
627 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
628 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
629 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
630 } else
631 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
632 {
633 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
634 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
635 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
636 } else
637 if (m_brush.GetStyle() == wxSTIPPLE)
638 {
639 gdk_gc_set_ts_origin( m_brushGC,
640 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
641 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
642 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
643 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
644 }
645 else
646 {
647 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
648 }
649 }
650
651 if (m_pen.GetStyle() != wxTRANSPARENT)
652 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
653 }
654
655 CalcBoundingBox (x, y);
656 CalcBoundingBox (x + width, y + height);
657}
658
659void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
660{
661 wxCHECK_RET( Ok(), wxT("invalid window dc") );
662
663 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
664 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
665
666 CalcBoundingBox (x, y);
667}
668
669void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
670{
671 wxCHECK_RET( Ok(), wxT("invalid window dc") );
672
673 if (m_pen.GetStyle() == wxTRANSPARENT) return;
674 if (n <= 0) return;
675
676 //Check, if scaling is necessary
677 const bool doScale =
678 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
679
680 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
681 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
682
683 if (doScale)
684 gpts = new GdkPoint[n];
685
686 for (int i = 0; i < n; i++)
687 {
688 if (doScale)
689 {
690 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
691 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
692 }
693 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
694 }
695
696 if (m_window)
697 gdk_draw_lines( m_window, m_penGC, gpts, n);
698
699 if (doScale)
700 delete[] gpts;
701}
702
703void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
704{
705 wxCHECK_RET( Ok(), wxT("invalid window dc") );
706
707 if (n <= 0) return;
708
709 //Check, if scaling is necessary
710 const bool doScale =
711 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
712
713 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
714 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
715
716 if (doScale)
717 gdkpoints = new GdkPoint[n];
718
719 int i;
720 for (i = 0 ; i < n ; i++)
721 {
722 if (doScale)
723 {
724 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
725 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
726 }
727 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
728 }
729
730 if (m_window)
731 {
732 if (m_brush.GetStyle() != wxTRANSPARENT)
733 {
734 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
735 {
736 gdk_gc_set_ts_origin( m_textGC,
737 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
738 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
739 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
740 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
741 } else
742 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
743 {
744 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
745 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
746 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
747 } else
748 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
749 {
750 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
751 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
752 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
753 } else
754 if (m_brush.GetStyle() == wxSTIPPLE)
755 {
756 gdk_gc_set_ts_origin( m_brushGC,
757 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
758 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
759 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
760 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
761 }
762 else
763 {
764 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
765 }
766 }
767
768 if (m_pen.GetStyle() != wxTRANSPARENT)
769 {
770/*
771 for (i = 0 ; i < n ; i++)
772 {
773 gdk_draw_line( m_window, m_penGC,
774 gdkpoints[i%n].x,
775 gdkpoints[i%n].y,
776 gdkpoints[(i+1)%n].x,
777 gdkpoints[(i+1)%n].y);
778 }
779*/
780 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
781
782 }
783 }
784
785 if (doScale)
786 delete[] gdkpoints;
787}
788
789void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
790{
791 wxCHECK_RET( Ok(), wxT("invalid window dc") );
792
793 wxCoord xx = XLOG2DEV(x);
794 wxCoord yy = YLOG2DEV(y);
795 wxCoord ww = m_signX * XLOG2DEVREL(width);
796 wxCoord hh = m_signY * YLOG2DEVREL(height);
797
798 // CMB: draw nothing if transformed w or h is 0
799 if (ww == 0 || hh == 0) return;
800
801 // CMB: handle -ve width and/or height
802 if (ww < 0) { ww = -ww; xx = xx - ww; }
803 if (hh < 0) { hh = -hh; yy = yy - hh; }
804
805 if (m_window)
806 {
807 if (m_brush.GetStyle() != wxTRANSPARENT)
808 {
809 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
810 {
811 gdk_gc_set_ts_origin( m_textGC,
812 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
813 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
814 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
815 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
816 } else
817 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
818 {
819 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
820 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
821 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
822 } else
823 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
824 {
825 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
826 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
827 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
828 } else
829 if (m_brush.GetStyle() == wxSTIPPLE)
830 {
831 gdk_gc_set_ts_origin( m_brushGC,
832 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
833 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
834 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
835 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
836 }
837 else
838 {
839 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
840 }
841 }
842
843 if (m_pen.GetStyle() != wxTRANSPARENT)
844 {
845#if 1
846 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
847 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
848 {
849 // Use 2 1-line rects instead
850 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
851
852 if (m_signX == -1)
853 {
854 // Different for RTL
855 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
856 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
857 }
858 else
859 {
860 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
861 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
862 }
863
864 // reset
865 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
866 }
867 else
868#endif
869 {
870 // Just use X11 for other cases
871 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
872 }
873 }
874 }
875
876 CalcBoundingBox( x, y );
877 CalcBoundingBox( x + width, y + height );
878}
879
880void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
881{
882 wxCHECK_RET( Ok(), wxT("invalid window dc") );
883
884 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
885
886 wxCoord xx = XLOG2DEV(x);
887 wxCoord yy = YLOG2DEV(y);
888 wxCoord ww = m_signX * XLOG2DEVREL(width);
889 wxCoord hh = m_signY * YLOG2DEVREL(height);
890 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
891
892 // CMB: handle -ve width and/or height
893 if (ww < 0) { ww = -ww; xx = xx - ww; }
894 if (hh < 0) { hh = -hh; yy = yy - hh; }
895
896 // CMB: if radius is zero use DrawRectangle() instead to avoid
897 // X drawing errors with small radii
898 if (rr == 0)
899 {
900 DrawRectangle( x, y, width, height );
901 return;
902 }
903
904 // CMB: draw nothing if transformed w or h is 0
905 if (ww == 0 || hh == 0) return;
906
907 // CMB: adjust size if outline is drawn otherwise the result is
908 // 1 pixel too wide and high
909 if (m_pen.GetStyle() != wxTRANSPARENT)
910 {
911 ww--;
912 hh--;
913 }
914
915 if (m_window)
916 {
917 // CMB: ensure dd is not larger than rectangle otherwise we
918 // get an hour glass shape
919 wxCoord dd = 2 * rr;
920 if (dd > ww) dd = ww;
921 if (dd > hh) dd = hh;
922 rr = dd / 2;
923
924 if (m_brush.GetStyle() != wxTRANSPARENT)
925 {
926 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
927 {
928 gdk_gc_set_ts_origin( m_textGC,
929 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
930 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
931 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
932 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
933 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
934 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
935 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
936 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
937 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
938 } else
939 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
940 {
941 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
943 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
948 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
949 } else
950 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
951 {
952 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
953 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
954 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
955 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
959 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
960 } else
961 if (m_brush.GetStyle() == wxSTIPPLE)
962 {
963 gdk_gc_set_ts_origin( m_brushGC,
964 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
965 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
966 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
967 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
970 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
972 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
973 }
974 else
975 {
976 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
977 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
978 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
979 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
980 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
981 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
982 }
983 }
984
985 if (m_pen.GetStyle() != wxTRANSPARENT)
986 {
987 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
988 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
989 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
990 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
991 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
992 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
993 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
994 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
995 }
996 }
997
998 // this ignores the radius
999 CalcBoundingBox( x, y );
1000 CalcBoundingBox( x + width, y + height );
1001}
1002
1003void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1004{
1005 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1006
1007 wxCoord xx = XLOG2DEV(x);
1008 wxCoord yy = YLOG2DEV(y);
1009 wxCoord ww = m_signX * XLOG2DEVREL(width);
1010 wxCoord hh = m_signY * YLOG2DEVREL(height);
1011
1012 // CMB: handle -ve width and/or height
1013 if (ww < 0) { ww = -ww; xx = xx - ww; }
1014 if (hh < 0) { hh = -hh; yy = yy - hh; }
1015
1016 if (m_window)
1017 {
1018 if (m_brush.GetStyle() != wxTRANSPARENT)
1019 {
1020 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1021 {
1022 gdk_gc_set_ts_origin( m_textGC,
1023 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1024 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1025 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1026 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1027 } else
1028 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1029 {
1030 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1031 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1032 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1033 } else
1034 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1035 {
1036 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1037 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1038 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1039 } else
1040 if (m_brush.GetStyle() == wxSTIPPLE)
1041 {
1042 gdk_gc_set_ts_origin( m_brushGC,
1043 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1044 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1045 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1046 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1047 }
1048 else
1049 {
1050 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1051 }
1052 }
1053
1054 if (m_pen.GetStyle() != wxTRANSPARENT)
1055 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1056 }
1057
1058 CalcBoundingBox( x, y );
1059 CalcBoundingBox( x + width, y + height );
1060}
1061
1062void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1063{
1064 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1065 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1066}
1067
1068void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1069 wxCoord x, wxCoord y,
1070 bool useMask )
1071{
1072 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1073
1074 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1075
1076 bool is_mono = bitmap.GetDepth() == 1;
1077
1078 // scale/translate size and position
1079 int xx = XLOG2DEV(x);
1080 int yy = YLOG2DEV(y);
1081
1082 int w = bitmap.GetWidth();
1083 int h = bitmap.GetHeight();
1084
1085 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1086 xx -= w;
1087
1088 CalcBoundingBox( x, y );
1089 CalcBoundingBox( x + w, y + h );
1090
1091 if (!m_window) return;
1092
1093 int ww = XLOG2DEVREL(w);
1094 int hh = YLOG2DEVREL(h);
1095
1096 // compare to current clipping region
1097 if (!m_currentClippingRegion.IsNull())
1098 {
1099 wxRegion tmp( xx,yy,ww,hh );
1100 tmp.Intersect( m_currentClippingRegion );
1101 if (tmp.IsEmpty())
1102 return;
1103 }
1104
1105 // scale bitmap if required
1106 wxBitmap use_bitmap = bitmap;
1107 if ((w != ww) || (h != hh))
1108 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1109
1110#if !GTK_CHECK_VERSION(2,2,0)
1111 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1112 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1113 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1114 // and also creates the mask as a side-effect:
1115 use_bitmap.GetPixmap();
1116#endif
1117
1118 // apply mask if any
1119 GdkBitmap *mask = (GdkBitmap *) NULL;
1120 if (useMask && use_bitmap.GetMask())
1121 mask = use_bitmap.GetMask()->GetBitmap();
1122
1123 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1124
1125 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1126
1127 if (mask != NULL)
1128 {
1129 if (!m_currentClippingRegion.IsNull())
1130 {
1131 GdkColor col;
1132 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1133 GdkGC *gc = gdk_gc_new( new_mask );
1134 col.pixel = 0;
1135 gdk_gc_set_foreground( gc, &col );
1136 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1137 col.pixel = 0;
1138 gdk_gc_set_background( gc, &col );
1139 col.pixel = 1;
1140 gdk_gc_set_foreground( gc, &col );
1141 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1142 gdk_gc_set_clip_origin( gc, -xx, -yy );
1143 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1144 gdk_gc_set_stipple( gc, mask );
1145 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1146 mask = new_mask;
1147 g_object_unref (gc);
1148 }
1149
1150 gdk_gc_set_clip_mask(use_gc, mask);
1151 gdk_gc_set_clip_origin(use_gc, xx, yy);
1152 }
1153
1154 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1155 // drawing a mono-bitmap (XBitmap) we use the current text GC
1156 if (is_mono)
1157 {
1158 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1159 GdkGC *gc = gdk_gc_new( bitmap2 );
1160 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1161 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1162 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1163
1164 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1165
1166 g_object_unref (bitmap2);
1167 g_object_unref (gc);
1168 }
1169 else
1170 {
1171#if GTK_CHECK_VERSION(2,2,0)
1172 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1173 {
1174 gdk_draw_pixbuf(m_window, use_gc,
1175 use_bitmap.GetPixbuf(),
1176 0, 0, xx, yy, -1, -1,
1177 GDK_RGB_DITHER_NORMAL, xx, yy);
1178 }
1179 else
1180#endif
1181 {
1182 gdk_draw_drawable(m_window, use_gc,
1183 use_bitmap.GetPixmap(),
1184 0, 0, xx, yy, -1, -1);
1185 }
1186 }
1187
1188 // remove mask again if any
1189 if (mask != NULL)
1190 {
1191 gdk_gc_set_clip_mask(use_gc, NULL);
1192 gdk_gc_set_clip_origin(use_gc, 0, 0);
1193 if (!m_currentClippingRegion.IsNull())
1194 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1195 if (new_mask != NULL)
1196 g_object_unref(new_mask);
1197 }
1198}
1199
1200bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1201 wxCoord width, wxCoord height,
1202 wxDC *source,
1203 wxCoord xsrc, wxCoord ysrc,
1204 int logical_func,
1205 bool useMask,
1206 wxCoord xsrcMask, wxCoord ysrcMask )
1207{
1208 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1209
1210 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1211
1212 if (!m_window) return false;
1213
1214 // transform the source DC coords to the device ones
1215 xsrc = source->LogicalToDeviceX(xsrc);
1216 ysrc = source->LogicalToDeviceY(ysrc);
1217
1218 wxClientDC *srcDC = (wxClientDC*)source;
1219 wxMemoryDC *memDC = (wxMemoryDC*)source;
1220
1221 bool use_bitmap_method = false;
1222 bool is_mono = false;
1223
1224 if (xsrcMask == -1 && ysrcMask == -1)
1225 {
1226 xsrcMask = xsrc;
1227 ysrcMask = ysrc;
1228 }
1229
1230 if (srcDC->m_isMemDC)
1231 {
1232 if (!memDC->m_selected.Ok()) return false;
1233
1234 is_mono = (memDC->m_selected.GetDepth() == 1);
1235
1236 // we use the "XCopyArea" way to copy a memory dc into
1237 // a different window if the memory dc BOTH
1238 // a) doesn't have any mask or its mask isn't used
1239 // b) it is clipped
1240 // c) is not 1-bit
1241
1242 if (useMask && (memDC->m_selected.GetMask()))
1243 {
1244 // we HAVE TO use the direct way for memory dcs
1245 // that have mask since the XCopyArea doesn't know
1246 // about masks
1247 use_bitmap_method = true;
1248 }
1249 else if (is_mono)
1250 {
1251 // we HAVE TO use the direct way for memory dcs
1252 // that are bitmaps because XCopyArea doesn't cope
1253 // with different bit depths
1254 use_bitmap_method = true;
1255 }
1256 else if ((xsrc == 0) && (ysrc == 0) &&
1257 (width == memDC->m_selected.GetWidth()) &&
1258 (height == memDC->m_selected.GetHeight()))
1259 {
1260 // we SHOULD use the direct way if all of the bitmap
1261 // in the memory dc is copied in which case XCopyArea
1262 // wouldn't be able able to boost performace by reducing
1263 // the area to be scaled
1264 use_bitmap_method = true;
1265 }
1266 }
1267
1268 CalcBoundingBox( xdest, ydest );
1269 CalcBoundingBox( xdest + width, ydest + height );
1270
1271 // scale/translate size and position
1272 wxCoord xx = XLOG2DEV(xdest);
1273 wxCoord yy = YLOG2DEV(ydest);
1274
1275 wxCoord ww = XLOG2DEVREL(width);
1276 wxCoord hh = YLOG2DEVREL(height);
1277
1278 // compare to current clipping region
1279 if (!m_currentClippingRegion.IsNull())
1280 {
1281 wxRegion tmp( xx,yy,ww,hh );
1282 tmp.Intersect( m_currentClippingRegion );
1283 if (tmp.IsEmpty())
1284 return true;
1285 }
1286
1287 int old_logical_func = m_logicalFunction;
1288 SetLogicalFunction( logical_func );
1289
1290 if (use_bitmap_method)
1291 {
1292 // scale/translate bitmap size
1293 wxCoord bm_width = memDC->m_selected.GetWidth();
1294 wxCoord bm_height = memDC->m_selected.GetHeight();
1295
1296 // Get clip coords for the bitmap. If we don't
1297 // use wxBitmap::Rescale(), which can clip the
1298 // bitmap, these are the same as the original
1299 // coordinates
1300 wxCoord cx = xx;
1301 wxCoord cy = yy;
1302 wxCoord cw = ww;
1303 wxCoord ch = hh;
1304
1305 // interpret userscale of src too
1306 double xsc,ysc;
1307 memDC->GetUserScale(&xsc,&ysc);
1308 bm_width = (int) (bm_width / xsc);
1309 bm_height = (int) (bm_height / ysc);
1310
1311 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1312 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1313
1314 // Scale bitmap if required
1315 wxBitmap use_bitmap = memDC->m_selected;
1316 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1317 {
1318 // This indicates that the blitting code below will get
1319 // a clipped bitmap and therefore needs to move the origin
1320 // accordingly
1321 wxRegion tmp( xx,yy,ww,hh );
1322 tmp.Intersect( m_currentClippingRegion );
1323 tmp.GetBox(cx,cy,cw,ch);
1324
1325 // Scale and clipped bitmap
1326 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1327 }
1328
1329 // apply mask if any
1330 GdkBitmap *mask = (GdkBitmap *) NULL;
1331 if (useMask && use_bitmap.GetMask())
1332 mask = use_bitmap.GetMask()->GetBitmap();
1333
1334 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1335
1336 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1337
1338 if (mask != NULL)
1339 {
1340 if (!m_currentClippingRegion.IsNull())
1341 {
1342 GdkColor col;
1343 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1344 GdkGC *gc = gdk_gc_new( new_mask );
1345 col.pixel = 0;
1346 gdk_gc_set_foreground( gc, &col );
1347 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1348 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1349 col.pixel = 0;
1350 gdk_gc_set_background( gc, &col );
1351 col.pixel = 1;
1352 gdk_gc_set_foreground( gc, &col );
1353 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1354 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1355 gdk_gc_set_clip_origin( gc, -cx, -cy );
1356 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1357 gdk_gc_set_stipple( gc, mask );
1358 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1359 mask = new_mask;
1360 g_object_unref (gc);
1361 }
1362
1363 gdk_gc_set_clip_mask(use_gc, mask);
1364 if (new_mask != NULL)
1365 gdk_gc_set_clip_origin(use_gc, cx, cy);
1366 else
1367 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1368 }
1369
1370 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1371 // drawing a mono-bitmap (XBitmap) we use the current text GC
1372
1373 if (is_mono)
1374 {
1375 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1376 GdkGC *gc = gdk_gc_new( bitmap );
1377 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1378 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1379 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1380
1381 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1382
1383 g_object_unref (bitmap);
1384 g_object_unref (gc);
1385 }
1386 else
1387 {
1388 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1389 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1390 }
1391
1392 // remove mask again if any
1393 if (mask != NULL)
1394 {
1395 gdk_gc_set_clip_mask(use_gc, NULL);
1396 gdk_gc_set_clip_origin(use_gc, 0, 0);
1397 if (!m_currentClippingRegion.IsNull())
1398 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1399 }
1400
1401 if (new_mask)
1402 g_object_unref (new_mask);
1403 }
1404 else // use_bitmap_method
1405 {
1406 if ((width != ww) || (height != hh))
1407 {
1408 // get clip coords
1409 wxRegion tmp( xx,yy,ww,hh );
1410 tmp.Intersect( m_currentClippingRegion );
1411 wxCoord cx,cy,cw,ch;
1412 tmp.GetBox(cx,cy,cw,ch);
1413
1414 // rescale bitmap
1415 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1416
1417 // draw scaled bitmap
1418 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1419 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1420 }
1421 else
1422 {
1423 // No scaling and not a memory dc with a mask either
1424
1425 // copy including child window contents
1426 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1427 gdk_draw_drawable( m_window, m_penGC,
1428 srcDC->GetWindow(),
1429 xsrc, ysrc, xx, yy,
1430 width, height );
1431 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1432 }
1433 }
1434
1435 SetLogicalFunction( old_logical_func );
1436
1437 return true;
1438}
1439
1440void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1441{
1442 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1443
1444 if (!m_window) return;
1445
1446 if (text.empty()) return;
1447
1448 x = XLOG2DEV(x);
1449 y = YLOG2DEV(y);
1450
1451 wxCHECK_RET( m_context, wxT("no Pango context") );
1452 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1453 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1454
1455 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1456
1457 const wxCharBuffer data = wxGTK_CONV( text );
1458 if ( !data )
1459 return;
1460 size_t datalen = strlen(data);
1461
1462 // TODO: as soon as Pango provides a function to check at runtime its
1463 // version, we can use it to disable the underline hack for
1464 // Pango >= 1.16 as the "underline of leading/trailing spaces"
1465 // has been fixed there
1466 bool needshack = underlined;
1467 char *hackstring = NULL;
1468
1469 if (needshack)
1470 {
1471 // a PangoLayout which has leading/trailing spaces with underlined font
1472 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1473 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1474 // this behaviour. To workaround this problem, we use a special hack here
1475 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1476 // empty space characters and give them a dummy colour attribute.
1477 // This will force Pango to underline the leading/trailing spaces, too.
1478
1479 // need to realloc the string to prepend & append our special characters
1480 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1481
1482 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1483 strcpy(hackstring, "\342\200\214");
1484
1485 // copy the user string
1486 memcpy(&hackstring[3], data, datalen);
1487
1488 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1489 strcpy(&hackstring[datalen+3], "\342\200\214");
1490
1491 // the special characters that we added require 6 additional bytes:
1492 datalen += 6;
1493
1494 pango_layout_set_text(m_layout, hackstring, datalen);
1495 }
1496 else
1497 {
1498 pango_layout_set_text(m_layout, data, datalen);
1499 }
1500
1501 if (underlined)
1502 {
1503 PangoAttrList *attrs = pango_attr_list_new();
1504 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1505 a->start_index = 0;
1506 a->end_index = datalen;
1507 pango_attr_list_insert(attrs, a);
1508
1509 if (needshack)
1510 {
1511 // dummy colour for the leading space
1512 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1513 a->start_index = 0;
1514 a->end_index = 1;
1515 pango_attr_list_insert(attrs, a);
1516
1517 // dummy colour for the trailing space
1518 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1519 a->start_index = datalen - 1;
1520 a->end_index = datalen;
1521 pango_attr_list_insert(attrs, a);
1522 }
1523
1524 pango_layout_set_attributes(m_layout, attrs);
1525 pango_attr_list_unref(attrs);
1526 }
1527
1528 int w,h;
1529
1530 if (fabs(m_scaleY - 1.0) > 0.00001)
1531 {
1532 // If there is a user or actually any scale applied to
1533 // the device context, scale the font.
1534
1535 // scale font description
1536 gint oldSize = pango_font_description_get_size( m_fontdesc );
1537 double size = oldSize;
1538 size = size * m_scaleY;
1539 pango_font_description_set_size( m_fontdesc, (gint)size );
1540
1541 // actually apply scaled font
1542 pango_layout_set_font_description( m_layout, m_fontdesc );
1543
1544 pango_layout_get_pixel_size( m_layout, &w, &h );
1545 if ( m_backgroundMode == wxSOLID )
1546 {
1547 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1548 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1549 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1550 }
1551
1552 // Draw layout.
1553 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1554 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1555 else
1556 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1557
1558 // reset unscaled size
1559 pango_font_description_set_size( m_fontdesc, oldSize );
1560
1561 // actually apply unscaled font
1562 pango_layout_set_font_description( m_layout, m_fontdesc );
1563 }
1564 else
1565 {
1566 pango_layout_get_pixel_size( m_layout, &w, &h );
1567 if ( m_backgroundMode == wxSOLID )
1568 {
1569 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1570 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1571 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1572 }
1573
1574 // Draw layout.
1575 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1576 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1577 else
1578 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1579 }
1580
1581 if (underlined)
1582 {
1583 // undo underline attributes setting:
1584 pango_layout_set_attributes(m_layout, NULL);
1585 }
1586
1587 wxCoord width = w;
1588 wxCoord height = h;
1589
1590 width = wxCoord(width / m_scaleX);
1591 height = wxCoord(height / m_scaleY);
1592 CalcBoundingBox (x + width, y + height);
1593 CalcBoundingBox (x, y);
1594
1595 if (hackstring)
1596 free(hackstring);
1597}
1598
1599
1600// TODO: There is an example of rotating text with GTK2 that would probably be
1601// a better approach here:
1602// http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1603
1604void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1605{
1606 if (!m_window || text.empty())
1607 return;
1608
1609 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1610
1611 if ( wxIsNullDouble(angle) )
1612 {
1613 DrawText(text, x, y);
1614 return;
1615 }
1616
1617 wxCoord w;
1618 wxCoord h;
1619
1620 // TODO: implement later without GdkFont for GTK 2.0
1621 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1622
1623 // draw the string normally
1624 wxBitmap src(w, h);
1625 wxMemoryDC dc;
1626 dc.SelectObject(src);
1627 dc.SetFont(GetFont());
1628 dc.SetBackground(*wxBLACK_BRUSH);
1629 dc.SetBrush(*wxBLACK_BRUSH);
1630 dc.Clear();
1631 dc.SetTextForeground( *wxWHITE );
1632 dc.DrawText(text, 0, 0);
1633 dc.SelectObject(wxNullBitmap);
1634
1635 // Calculate the size of the rotated bounding box.
1636 double rad = DegToRad(angle);
1637 double dx = cos(rad),
1638 dy = sin(rad);
1639
1640 // the rectngle vertices are counted clockwise with the first one being at
1641 // (0, 0) (or, rather, at (x, y))
1642 double x2 = w*dx,
1643 y2 = -w*dy; // y axis points to the bottom, hence minus
1644 double x4 = h*dy,
1645 y4 = h*dx;
1646 double x3 = x4 + x2,
1647 y3 = y4 + y2;
1648
1649 // calc max and min
1650 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1651 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1652 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1653 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1654
1655
1656 wxImage image = src.ConvertToImage();
1657
1658 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1659 m_textForegroundColour.Green(),
1660 m_textForegroundColour.Blue() );
1661 image = image.Rotate( rad, wxPoint(0,0) );
1662
1663 int i_angle = (int) angle;
1664 i_angle = i_angle % 360;
1665 if (i_angle < 0)
1666 i_angle += 360;
1667 int xoffset = 0;
1668 if ((i_angle >= 90.0) && (i_angle < 270.0))
1669 xoffset = image.GetWidth();
1670 int yoffset = 0;
1671 if ((i_angle >= 0.0) && (i_angle < 180.0))
1672 yoffset = image.GetHeight();
1673
1674 if ((i_angle >= 0) && (i_angle < 90))
1675 yoffset -= (int)( cos(rad)*h );
1676 if ((i_angle >= 90) && (i_angle < 180))
1677 xoffset -= (int)( sin(rad)*h );
1678 if ((i_angle >= 180) && (i_angle < 270))
1679 yoffset -= (int)( cos(rad)*h );
1680 if ((i_angle >= 270) && (i_angle < 360))
1681 xoffset -= (int)( sin(rad)*h );
1682
1683 int i_x = x - xoffset;
1684 int i_y = y - yoffset;
1685
1686 src = image;
1687 DoDrawBitmap( src, i_x, i_y, true );
1688
1689
1690 // it would be better to draw with non underlined font and draw the line
1691 // manually here (it would be more straight...)
1692#if 0
1693 if ( m_font.GetUnderlined() )
1694 {
1695 gdk_draw_line( m_window, m_textGC,
1696 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1697 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1698 }
1699#endif // 0
1700
1701 // update the bounding box
1702 CalcBoundingBox(x + minX, y + minY);
1703 CalcBoundingBox(x + maxX, y + maxY);
1704}
1705
1706void wxWindowDC::DoGetTextExtent(const wxString &string,
1707 wxCoord *width, wxCoord *height,
1708 wxCoord *descent, wxCoord *externalLeading,
1709 wxFont *theFont) const
1710{
1711 if ( width )
1712 *width = 0;
1713 if ( height )
1714 *height = 0;
1715 if ( descent )
1716 *descent = 0;
1717 if ( externalLeading )
1718 *externalLeading = 0;
1719
1720 if (string.empty())
1721 return;
1722
1723 // ensure that theFont is always non-NULL
1724 if ( !theFont || !theFont->Ok() )
1725 theFont = wx_const_cast(wxFont *, &m_font);
1726
1727 // and use it if it's valid
1728 if ( theFont->Ok() )
1729 {
1730 pango_layout_set_font_description
1731 (
1732 m_layout,
1733 theFont->GetNativeFontInfo()->description
1734 );
1735 }
1736
1737 // Set layout's text
1738 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1739 if ( !dataUTF8 )
1740 {
1741 // hardly ideal, but what else can we do if conversion failed?
1742 return;
1743 }
1744
1745 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1746
1747 if (descent)
1748 {
1749 int h;
1750 pango_layout_get_pixel_size( m_layout, width, &h );
1751 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1752 int baseline = pango_layout_iter_get_baseline(iter);
1753 pango_layout_iter_free(iter);
1754 *descent = h - PANGO_PIXELS(baseline);
1755
1756 if (height)
1757 *height = (wxCoord) h;
1758 }
1759 else
1760 {
1761 pango_layout_get_pixel_size( m_layout, width, height );
1762 }
1763
1764 // Reset old font description
1765 if (theFont)
1766 pango_layout_set_font_description( m_layout, m_fontdesc );
1767}
1768
1769wxCoord wxWindowDC::GetCharWidth() const
1770{
1771 pango_layout_set_text( m_layout, "H", 1 );
1772 int w;
1773 pango_layout_get_pixel_size( m_layout, &w, NULL );
1774 return w;
1775}
1776
1777wxCoord wxWindowDC::GetCharHeight() const
1778{
1779 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1780 return PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics));
1781}
1782
1783void wxWindowDC::Clear()
1784{
1785 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1786
1787 if (!m_window) return;
1788
1789 // VZ: the code below results in infinite recursion and crashes when
1790 // dc.Clear() is done from OnPaint() so I disable it for now.
1791 // I don't know what the correct fix is but Clear() surely should not
1792 // reenter OnPaint()!
1793#if 0
1794 /* - we either are a memory dc or have a window as the
1795 owner. anything else shouldn't happen.
1796 - we don't use gdk_window_clear() as we don't set
1797 the window's background colour anymore. it is too
1798 much pain to keep the DC's and the window's back-
1799 ground colour in synch. */
1800
1801 if (m_owner)
1802 {
1803 m_owner->Clear();
1804 return;
1805 }
1806
1807 if (m_isMemDC)
1808 {
1809 int width,height;
1810 GetSize( &width, &height );
1811 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1812 return;
1813 }
1814#else // 1
1815 int width,height;
1816 GetSize( &width, &height );
1817 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1818#endif // 0/1
1819}
1820
1821void wxWindowDC::SetFont( const wxFont &font )
1822{
1823 m_font = font;
1824
1825 if (m_font.Ok())
1826 {
1827 if (m_fontdesc)
1828 pango_font_description_free( m_fontdesc );
1829
1830 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1831
1832
1833 if (m_owner)
1834 {
1835 PangoContext *oldContext = m_context;
1836
1837 m_context = m_owner->GtkGetPangoDefaultContext();
1838
1839 // If we switch back/forth between different contexts
1840 // we also have to create a new layout. I think so,
1841 // at least, and it doesn't hurt to do it.
1842 if (oldContext != m_context)
1843 {
1844 if (m_layout)
1845 g_object_unref (m_layout);
1846
1847 m_layout = pango_layout_new( m_context );
1848 }
1849 }
1850
1851 pango_layout_set_font_description( m_layout, m_fontdesc );
1852 }
1853}
1854
1855void wxWindowDC::SetPen( const wxPen &pen )
1856{
1857 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1858
1859 if (m_pen == pen) return;
1860
1861 m_pen = pen;
1862
1863 if (!m_pen.Ok()) return;
1864
1865 if (!m_window) return;
1866
1867 gint width = m_pen.GetWidth();
1868 if (width <= 0)
1869 {
1870 // CMB: if width is non-zero scale it with the dc
1871 width = 1;
1872 }
1873 else
1874 {
1875 // X doesn't allow different width in x and y and so we take
1876 // the average
1877 double w = 0.5 +
1878 ( fabs((double) XLOG2DEVREL(width)) +
1879 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1880 width = (int)w;
1881 if ( !width )
1882 {
1883 // width can't be 0 or an internal GTK error occurs inside
1884 // gdk_gc_set_dashes() below
1885 width = 1;
1886 }
1887 }
1888
1889 static const wxGTKDash dotted[] = {1, 1};
1890 static const wxGTKDash short_dashed[] = {2, 2};
1891 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1892 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1893
1894 // We express dash pattern in pen width unit, so we are
1895 // independent of zoom factor and so on...
1896 int req_nb_dash;
1897 const wxGTKDash *req_dash;
1898
1899 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1900 switch (m_pen.GetStyle())
1901 {
1902 case wxUSER_DASH:
1903 {
1904 lineStyle = GDK_LINE_ON_OFF_DASH;
1905 req_nb_dash = m_pen.GetDashCount();
1906 req_dash = (wxGTKDash*)m_pen.GetDash();
1907 break;
1908 }
1909 case wxDOT:
1910 {
1911 lineStyle = GDK_LINE_ON_OFF_DASH;
1912 req_nb_dash = 2;
1913 req_dash = dotted;
1914 break;
1915 }
1916 case wxLONG_DASH:
1917 {
1918 lineStyle = GDK_LINE_ON_OFF_DASH;
1919 req_nb_dash = 2;
1920 req_dash = wxCoord_dashed;
1921 break;
1922 }
1923 case wxSHORT_DASH:
1924 {
1925 lineStyle = GDK_LINE_ON_OFF_DASH;
1926 req_nb_dash = 2;
1927 req_dash = short_dashed;
1928 break;
1929 }
1930 case wxDOT_DASH:
1931 {
1932// lineStyle = GDK_LINE_DOUBLE_DASH;
1933 lineStyle = GDK_LINE_ON_OFF_DASH;
1934 req_nb_dash = 4;
1935 req_dash = dotted_dashed;
1936 break;
1937 }
1938
1939 case wxTRANSPARENT:
1940 case wxSTIPPLE_MASK_OPAQUE:
1941 case wxSTIPPLE:
1942 case wxSOLID:
1943 default:
1944 {
1945 lineStyle = GDK_LINE_SOLID;
1946 req_dash = (wxGTKDash*)NULL;
1947 req_nb_dash = 0;
1948 break;
1949 }
1950 }
1951
1952 if (req_dash && req_nb_dash)
1953 {
1954 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1955 if (real_req_dash)
1956 {
1957 for (int i = 0; i < req_nb_dash; i++)
1958 real_req_dash[i] = req_dash[i] * width;
1959 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1960 delete[] real_req_dash;
1961 }
1962 else
1963 {
1964 // No Memory. We use non-scaled dash pattern...
1965 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1966 }
1967 }
1968
1969 GdkCapStyle capStyle = GDK_CAP_ROUND;
1970 switch (m_pen.GetCap())
1971 {
1972 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1973 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1974 case wxCAP_ROUND:
1975 default:
1976 {
1977 if (width <= 1)
1978 {
1979 width = 0;
1980 capStyle = GDK_CAP_NOT_LAST;
1981 }
1982 else
1983 {
1984 capStyle = GDK_CAP_ROUND;
1985 }
1986 break;
1987 }
1988 }
1989
1990 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1991 switch (m_pen.GetJoin())
1992 {
1993 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1994 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1995 case wxJOIN_ROUND:
1996 default: { joinStyle = GDK_JOIN_ROUND; break; }
1997 }
1998
1999 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2000
2001 m_pen.GetColour().CalcPixel( m_cmap );
2002 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2003}
2004
2005void wxWindowDC::SetBrush( const wxBrush &brush )
2006{
2007 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2008
2009 if (m_brush == brush) return;
2010
2011 m_brush = brush;
2012
2013 if (!m_brush.Ok()) return;
2014
2015 if (!m_window) return;
2016
2017 m_brush.GetColour().CalcPixel( m_cmap );
2018 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2019
2020 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2021
2022 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2023 {
2024 if (m_brush.GetStipple()->GetDepth() != 1)
2025 {
2026 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2027 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2028 }
2029 else
2030 {
2031 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2032 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2033 }
2034 }
2035
2036 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2037 {
2038 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2039 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2040 }
2041
2042 if (m_brush.IsHatch())
2043 {
2044 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2045 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2046 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2047 }
2048}
2049
2050void wxWindowDC::SetBackground( const wxBrush &brush )
2051{
2052 /* CMB 21/7/98: Added SetBackground. Sets background brush
2053 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2054
2055 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2056
2057 if (m_backgroundBrush == brush) return;
2058
2059 m_backgroundBrush = brush;
2060
2061 if (!m_backgroundBrush.Ok()) return;
2062
2063 if (!m_window) return;
2064
2065 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2066 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2067 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2068 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2069 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2070
2071 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2072
2073 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2074 {
2075 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2076 {
2077 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2078 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2079 }
2080 else
2081 {
2082 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2083 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2084 }
2085 }
2086
2087 if (m_backgroundBrush.IsHatch())
2088 {
2089 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2090 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2091 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2092 }
2093}
2094
2095void wxWindowDC::SetLogicalFunction( int function )
2096{
2097 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2098
2099 if (m_logicalFunction == function)
2100 return;
2101
2102 // VZ: shouldn't this be a CHECK?
2103 if (!m_window)
2104 return;
2105
2106 GdkFunction mode;
2107 switch (function)
2108 {
2109 case wxXOR: mode = GDK_XOR; break;
2110 case wxINVERT: mode = GDK_INVERT; break;
2111 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2112 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2113 case wxCLEAR: mode = GDK_CLEAR; break;
2114 case wxSET: mode = GDK_SET; break;
2115 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2116 case wxAND: mode = GDK_AND; break;
2117 case wxOR: mode = GDK_OR; break;
2118 case wxEQUIV: mode = GDK_EQUIV; break;
2119 case wxNAND: mode = GDK_NAND; break;
2120 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2121 case wxCOPY: mode = GDK_COPY; break;
2122 case wxNO_OP: mode = GDK_NOOP; break;
2123 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2124
2125 // unsupported by GTK
2126 case wxNOR: mode = GDK_COPY; break;
2127 default:
2128 wxFAIL_MSG( wxT("unsupported logical function") );
2129 mode = GDK_COPY;
2130 }
2131
2132 m_logicalFunction = function;
2133
2134 gdk_gc_set_function( m_penGC, mode );
2135 gdk_gc_set_function( m_brushGC, mode );
2136
2137 // to stay compatible with wxMSW, we don't apply ROPs to the text
2138 // operations (i.e. DrawText/DrawRotatedText).
2139 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2140 gdk_gc_set_function( m_textGC, mode );
2141}
2142
2143void wxWindowDC::SetTextForeground( const wxColour &col )
2144{
2145 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2146
2147 // don't set m_textForegroundColour to an invalid colour as we'd crash
2148 // later then (we use m_textForegroundColour.GetColor() without checking
2149 // in a few places)
2150 if ( !col.Ok() || (m_textForegroundColour == col) )
2151 return;
2152
2153 m_textForegroundColour = col;
2154
2155 if ( m_window )
2156 {
2157 m_textForegroundColour.CalcPixel( m_cmap );
2158 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2159 }
2160}
2161
2162void wxWindowDC::SetTextBackground( const wxColour &col )
2163{
2164 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2165
2166 // same as above
2167 if ( !col.Ok() || (m_textBackgroundColour == col) )
2168 return;
2169
2170 m_textBackgroundColour = col;
2171
2172 if ( m_window )
2173 {
2174 m_textBackgroundColour.CalcPixel( m_cmap );
2175 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2176 }
2177}
2178
2179void wxWindowDC::SetBackgroundMode( int mode )
2180{
2181 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2182
2183 m_backgroundMode = mode;
2184
2185 if (!m_window) return;
2186
2187 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2188 // transparent/solid background mode
2189
2190 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2191 {
2192 gdk_gc_set_fill( m_brushGC,
2193 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2194 }
2195}
2196
2197void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2198{
2199 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2200}
2201
2202void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2203{
2204 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2205
2206 if (!m_window) return;
2207
2208 wxRect rect;
2209 rect.x = XLOG2DEV(x);
2210 rect.y = YLOG2DEV(y);
2211 rect.width = XLOG2DEVREL(width);
2212 rect.height = YLOG2DEVREL(height);
2213
2214 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2215 {
2216 rect.x -= rect.width;
2217 }
2218
2219 if (!m_currentClippingRegion.IsNull())
2220 m_currentClippingRegion.Intersect( rect );
2221 else
2222 m_currentClippingRegion.Union( rect );
2223
2224#if USE_PAINT_REGION
2225 if (!m_paintClippingRegion.IsNull())
2226 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2227#endif
2228
2229 wxCoord xx, yy, ww, hh;
2230 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2231 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2232
2233 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2234 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2235 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2236 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2237}
2238
2239void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2240{
2241 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2242
2243 if (region.Empty())
2244 {
2245 DestroyClippingRegion();
2246 return;
2247 }
2248
2249 if (!m_window) return;
2250
2251 if (!m_currentClippingRegion.IsNull())
2252 m_currentClippingRegion.Intersect( region );
2253 else
2254 m_currentClippingRegion.Union( region );
2255
2256#if USE_PAINT_REGION
2257 if (!m_paintClippingRegion.IsNull())
2258 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2259#endif
2260
2261 wxCoord xx, yy, ww, hh;
2262 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2263 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2264
2265 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2266 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2267 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2268 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2269}
2270
2271void wxWindowDC::DestroyClippingRegion()
2272{
2273 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2274
2275 wxDC::DestroyClippingRegion();
2276
2277 m_currentClippingRegion.Clear();
2278
2279#if USE_PAINT_REGION
2280 if (!m_paintClippingRegion.IsEmpty())
2281 m_currentClippingRegion.Union( m_paintClippingRegion );
2282#endif
2283
2284 if (!m_window) return;
2285
2286 if (m_currentClippingRegion.IsEmpty())
2287 {
2288 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2289 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2290 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2291 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2292 }
2293 else
2294 {
2295 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2296 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2297 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2298 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2299 }
2300}
2301
2302void wxWindowDC::Destroy()
2303{
2304 if (m_penGC) wxFreePoolGC( m_penGC );
2305 m_penGC = (GdkGC*) NULL;
2306 if (m_brushGC) wxFreePoolGC( m_brushGC );
2307 m_brushGC = (GdkGC*) NULL;
2308 if (m_textGC) wxFreePoolGC( m_textGC );
2309 m_textGC = (GdkGC*) NULL;
2310 if (m_bgGC) wxFreePoolGC( m_bgGC );
2311 m_bgGC = (GdkGC*) NULL;
2312}
2313
2314void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2315{
2316 m_deviceOriginX = x;
2317 m_deviceOriginY = y;
2318
2319 ComputeScaleAndOrigin();
2320}
2321
2322void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2323{
2324 m_signX = (xLeftRight ? 1 : -1);
2325 m_signY = (yBottomUp ? -1 : 1);
2326
2327 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2328 m_signX = -m_signX;
2329
2330 ComputeScaleAndOrigin();
2331}
2332
2333void wxWindowDC::ComputeScaleAndOrigin()
2334{
2335 const wxRealPoint origScale(m_scaleX, m_scaleY);
2336
2337 wxDC::ComputeScaleAndOrigin();
2338
2339 // if scale has changed call SetPen to recalulate the line width
2340 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2341 {
2342 // this is a bit artificial, but we need to force wxDC to think the pen
2343 // has changed
2344 wxPen pen = m_pen;
2345 m_pen = wxNullPen;
2346 SetPen( pen );
2347 }
2348}
2349
2350// Resolution in pixels per logical inch
2351wxSize wxWindowDC::GetPPI() const
2352{
2353 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2354}
2355
2356int wxWindowDC::GetDepth() const
2357{
2358 return gdk_drawable_get_depth(m_window);
2359}
2360
2361
2362//-----------------------------------------------------------------------------
2363// wxPaintDC
2364//-----------------------------------------------------------------------------
2365
2366IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2367
2368// Limit the paint region to the window size. Sometimes
2369// the paint region is too big, and this risks X11 errors
2370static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2371{
2372 wxRect originalRect = region.GetBox();
2373 wxRect rect(originalRect);
2374 if (rect.width + rect.x > sz.x)
2375 rect.width = sz.x - rect.x;
2376 if (rect.height + rect.y > sz.y)
2377 rect.height = sz.y - rect.y;
2378 if (rect != originalRect)
2379 {
2380 region = wxRegion(rect);
2381 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2382 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2383 rect.x, rect.y, rect.width, rect.height);
2384 }
2385}
2386
2387wxPaintDC::wxPaintDC( wxWindow *win )
2388 : wxClientDC( win )
2389{
2390#if USE_PAINT_REGION
2391 if (!win->m_clipPaintRegion)
2392 return;
2393
2394 wxSize sz = win->GetSize();
2395 m_paintClippingRegion = win->m_nativeUpdateRegion;
2396 wxLimitRegionToSize(m_paintClippingRegion, sz);
2397
2398 GdkRegion *region = m_paintClippingRegion.GetRegion();
2399 if ( region )
2400 {
2401 m_currentClippingRegion.Union( m_paintClippingRegion );
2402 wxLimitRegionToSize(m_currentClippingRegion, sz);
2403
2404 if (sz.x <= 0 || sz.y <= 0)
2405 return ;
2406
2407 gdk_gc_set_clip_region( m_penGC, region );
2408 gdk_gc_set_clip_region( m_brushGC, region );
2409 gdk_gc_set_clip_region( m_textGC, region );
2410 gdk_gc_set_clip_region( m_bgGC, region );
2411 }
2412#endif // USE_PAINT_REGION
2413}
2414
2415//-----------------------------------------------------------------------------
2416// wxClientDC
2417//-----------------------------------------------------------------------------
2418
2419IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2420
2421wxClientDC::wxClientDC( wxWindow *win )
2422 : wxWindowDC( win )
2423{
2424 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2425
2426#ifdef __WXUNIVERSAL__
2427 wxPoint ptOrigin = win->GetClientAreaOrigin();
2428 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2429 wxSize size = win->GetClientSize();
2430 SetClippingRegion(wxPoint(0, 0), size);
2431#endif // __WXUNIVERSAL__
2432}
2433
2434void wxClientDC::DoGetSize(int *width, int *height) const
2435{
2436 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2437
2438 m_owner->GetClientSize( width, height );
2439}
2440
2441// ----------------------------------------------------------------------------
2442// wxDCModule
2443// ----------------------------------------------------------------------------
2444
2445class wxDCModule : public wxModule
2446{
2447public:
2448 bool OnInit();
2449 void OnExit();
2450
2451private:
2452 DECLARE_DYNAMIC_CLASS(wxDCModule)
2453};
2454
2455IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2456
2457bool wxDCModule::OnInit()
2458{
2459 wxInitGCPool();
2460 return true;
2461}
2462
2463void wxDCModule::OnExit()
2464{
2465 wxCleanUpGCPool();
2466}
wxWidgets (Impactor)