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Disable wxUSE_ENH_METAFILE for wxGTK builds.
[wxWidgets.git] / src / gtk / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose: wxWindowDCImpl implementation
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 #include "wx/gtk/dcclient.h"
14
15 #ifndef WX_PRECOMP
16 #include "wx/window.h"
17 #include "wx/log.h"
18 #include "wx/dcmemory.h"
19 #include "wx/math.h"
20 #include "wx/image.h"
21 #include "wx/module.h"
22 #endif
23
24 #include "wx/fontutil.h"
25
26 #include "wx/gtk/private.h"
27 #include "wx/gtk/private/object.h"
28 #include "wx/private/textmeasure.h"
29
30 //-----------------------------------------------------------------------------
31 // local defines
32 //-----------------------------------------------------------------------------
33
34 #define XLOG2DEV(x) LogicalToDeviceX(x)
35 #define XLOG2DEVREL(x) LogicalToDeviceXRel(x)
36 #define YLOG2DEV(y) LogicalToDeviceY(y)
37 #define YLOG2DEVREL(y) LogicalToDeviceYRel(y)
38
39 #define USE_PAINT_REGION 1
40
41 //-----------------------------------------------------------------------------
42 // local data
43 //-----------------------------------------------------------------------------
44
45 #include "bdiag.xbm"
46 #include "fdiag.xbm"
47 #include "cdiag.xbm"
48 #include "horiz.xbm"
49 #include "verti.xbm"
50 #include "cross.xbm"
51
52 static GdkPixmap* hatches[wxBRUSHSTYLE_LAST_HATCH - wxBRUSHSTYLE_FIRST_HATCH + 1];
53
54 //-----------------------------------------------------------------------------
55 // constants
56 //-----------------------------------------------------------------------------
57
58 static const double RAD2DEG = 180.0 / M_PI;
59
60 // ----------------------------------------------------------------------------
61 // private functions
62 // ----------------------------------------------------------------------------
63
64 static inline double dmax(double a, double b) { return a > b ? a : b; }
65 static inline double dmin(double a, double b) { return a < b ? a : b; }
66
67 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
68
69 static GdkPixmap* GetHatch(int style)
70 {
71 wxASSERT(style >= wxBRUSHSTYLE_FIRST_HATCH && style <= wxBRUSHSTYLE_LAST_HATCH);
72 const int i = style - wxBRUSHSTYLE_FIRST_HATCH;
73 if (hatches[i] == NULL)
74 {
75 // This macro creates a bitmap from an XBM file included above. Notice
76 // the need for the cast because gdk_bitmap_create_from_data() doesn't
77 // accept unsigned data but the arrays in XBM need to be unsigned to
78 // avoid warnings (and even errors in C+0x mode) from g++.
79 #define CREATE_FROM_XBM_DATA(name) \
80 gdk_bitmap_create_from_data \
81 ( \
82 NULL, \
83 reinterpret_cast<gchar *>(name ## _bits), \
84 name ## _width, \
85 name ## _height \
86 )
87
88 switch (style)
89 {
90 case wxBRUSHSTYLE_BDIAGONAL_HATCH:
91 hatches[i] = CREATE_FROM_XBM_DATA(bdiag);
92 break;
93 case wxBRUSHSTYLE_CROSSDIAG_HATCH:
94 hatches[i] = CREATE_FROM_XBM_DATA(cdiag);
95 break;
96 case wxBRUSHSTYLE_CROSS_HATCH:
97 hatches[i] = CREATE_FROM_XBM_DATA(cross);
98 break;
99 case wxBRUSHSTYLE_FDIAGONAL_HATCH:
100 hatches[i] = CREATE_FROM_XBM_DATA(fdiag);
101 break;
102 case wxBRUSHSTYLE_HORIZONTAL_HATCH:
103 hatches[i] = CREATE_FROM_XBM_DATA(horiz);
104 break;
105 case wxBRUSHSTYLE_VERTICAL_HATCH:
106 hatches[i] = CREATE_FROM_XBM_DATA(verti);
107 break;
108 }
109
110 #undef CREATE_FROM_XBM_DATA
111 }
112 return hatches[i];
113 }
114
115 //-----------------------------------------------------------------------------
116 // Implement Pool of Graphic contexts. Creating them takes too much time.
117 //-----------------------------------------------------------------------------
118
119 enum wxPoolGCType
120 {
121 wxGC_ERROR = 0,
122 wxTEXT_MONO,
123 wxBG_MONO,
124 wxPEN_MONO,
125 wxBRUSH_MONO,
126 wxTEXT_COLOUR,
127 wxBG_COLOUR,
128 wxPEN_COLOUR,
129 wxBRUSH_COLOUR,
130 wxTEXT_SCREEN,
131 wxBG_SCREEN,
132 wxPEN_SCREEN,
133 wxBRUSH_SCREEN,
134 wxTEXT_COLOUR_ALPHA,
135 wxBG_COLOUR_ALPHA,
136 wxPEN_COLOUR_ALPHA,
137 wxBRUSH_COLOUR_ALPHA
138 };
139
140 struct wxGC
141 {
142 GdkGC *m_gc;
143 wxPoolGCType m_type;
144 bool m_used;
145 };
146
147 #define GC_POOL_ALLOC_SIZE 100
148
149 static int wxGCPoolSize = 0;
150
151 static wxGC *wxGCPool = NULL;
152
153 static void wxInitGCPool()
154 {
155 // This really could wait until the first call to
156 // wxGetPoolGC, but we will make the first allocation
157 // now when other initialization is being performed.
158
159 // Set initial pool size.
160 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
161
162 // Allocate initial pool.
163 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
164 if (wxGCPool == NULL)
165 {
166 // If we cannot malloc, then fail with error
167 // when debug is enabled. If debug is not enabled,
168 // the problem will eventually get caught
169 // in wxGetPoolGC.
170 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
171 return;
172 }
173
174 // Zero initial pool.
175 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
176 }
177
178 static void wxCleanUpGCPool()
179 {
180 for (int i = 0; i < wxGCPoolSize; i++)
181 {
182 if (wxGCPool[i].m_gc)
183 g_object_unref (wxGCPool[i].m_gc);
184 }
185
186 free(wxGCPool);
187 wxGCPool = NULL;
188 wxGCPoolSize = 0;
189 }
190
191 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
192 {
193 wxGC *pptr;
194
195 // Look for an available GC.
196 for (int i = 0; i < wxGCPoolSize; i++)
197 {
198 if (!wxGCPool[i].m_gc)
199 {
200 wxGCPool[i].m_gc = gdk_gc_new( window );
201 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
202 wxGCPool[i].m_type = type;
203 wxGCPool[i].m_used = false;
204 }
205 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
206 {
207 wxGCPool[i].m_used = true;
208 return wxGCPool[i].m_gc;
209 }
210 }
211
212 // We did not find an available GC.
213 // We need to grow the GC pool.
214 pptr = (wxGC *)realloc(wxGCPool,
215 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
216 if (pptr != NULL)
217 {
218 // Initialize newly allocated pool.
219 wxGCPool = pptr;
220 memset(&wxGCPool[wxGCPoolSize], 0,
221 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
222
223 // Initialize entry we will return.
224 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
225 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
226 wxGCPool[wxGCPoolSize].m_type = type;
227 wxGCPool[wxGCPoolSize].m_used = true;
228
229 // Set new value of pool size.
230 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
231
232 // Return newly allocated entry.
233 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
234 }
235
236 // The realloc failed. Fall through to error.
237 wxFAIL_MSG( wxT("No GC available") );
238
239 return NULL;
240 }
241
242 static void wxFreePoolGC( GdkGC *gc )
243 {
244 for (int i = 0; i < wxGCPoolSize; i++)
245 {
246 if (wxGCPool[i].m_gc == gc)
247 {
248 wxGCPool[i].m_used = false;
249 return;
250 }
251 }
252
253 wxFAIL_MSG( wxT("Wrong GC") );
254 }
255
256 //-----------------------------------------------------------------------------
257 // wxWindowDC
258 //-----------------------------------------------------------------------------
259
260 IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxGTKDCImpl)
261
262 wxWindowDCImpl::wxWindowDCImpl( wxDC *owner ) :
263 wxGTKDCImpl( owner )
264 {
265 m_gdkwindow = NULL;
266 m_penGC = NULL;
267 m_brushGC = NULL;
268 m_textGC = NULL;
269 m_bgGC = NULL;
270 m_cmap = NULL;
271 m_isScreenDC = false;
272 m_context = NULL;
273 m_layout = NULL;
274 m_fontdesc = NULL;
275 }
276
277 wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
278 wxGTKDCImpl( owner )
279 {
280 wxASSERT_MSG( window, wxT("DC needs a window") );
281
282 m_gdkwindow = NULL;
283 m_penGC = NULL;
284 m_brushGC = NULL;
285 m_textGC = NULL;
286 m_bgGC = NULL;
287 m_cmap = NULL;
288 m_isScreenDC = false;
289 m_font = window->GetFont();
290
291 GtkWidget *widget = window->m_wxwindow;
292 m_gdkwindow = window->GTKGetDrawingWindow();
293
294 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
295 // code should still be able to create wxClientDCs for them
296 if ( !widget )
297 {
298 widget = window->m_widget;
299
300 wxCHECK_RET(widget, "DC needs a widget");
301
302 m_gdkwindow = widget->window;
303 if (!gtk_widget_get_has_window(widget))
304 SetDeviceLocalOrigin(widget->allocation.x, widget->allocation.y);
305 }
306
307 m_context = window->GTKGetPangoDefaultContext();
308 m_layout = pango_layout_new( m_context );
309 m_fontdesc = pango_font_description_copy( widget->style->font_desc );
310
311 // Window not realized ?
312 if (!m_gdkwindow)
313 {
314 // Don't report problems as per MSW.
315 m_ok = true;
316
317 return;
318 }
319
320 m_cmap = gtk_widget_get_colormap(widget);
321
322 SetUpDC();
323
324 /* this must be done after SetUpDC, bacause SetUpDC calls the
325 repective SetBrush, SetPen, SetBackground etc functions
326 to set up the DC. SetBackground call m_owner->SetBackground
327 and this might not be desired as the standard dc background
328 is white whereas a window might assume gray to be the
329 standard (as e.g. wxStatusBar) */
330
331 m_window = window;
332
333 if (m_window && m_window->m_wxwindow &&
334 (m_window->GetLayoutDirection() == wxLayout_RightToLeft))
335 {
336 // reverse sense
337 m_signX = -1;
338
339 // origin in the upper right corner
340 m_deviceOriginX = m_window->GetClientSize().x;
341 }
342 }
343
344 wxWindowDCImpl::~wxWindowDCImpl()
345 {
346 Destroy();
347
348 if (m_layout)
349 g_object_unref (m_layout);
350 if (m_fontdesc)
351 pango_font_description_free( m_fontdesc );
352 }
353
354 void wxWindowDCImpl::SetUpDC( bool isMemDC )
355 {
356 m_ok = true;
357
358 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
359
360 bool done = false;
361
362 if ((isMemDC) && (GetSelectedBitmap().IsOk()))
363 {
364 if (GetSelectedBitmap().GetDepth() == 1)
365 {
366 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_MONO );
367 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_MONO );
368 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_MONO );
369 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_MONO );
370 done = true;
371 }
372 }
373
374 if (!done)
375 {
376 if (m_isScreenDC)
377 {
378 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_SCREEN );
379 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_SCREEN );
380 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_SCREEN );
381 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_SCREEN );
382 }
383 #if GTK_CHECK_VERSION(2,12,0)
384 // gdk_screen_get_rgba_colormap was added in 2.8, but this code is for
385 // compositing which requires 2.12
386 else if (gtk_check_version(2,12,0) == NULL &&
387 m_cmap == gdk_screen_get_rgba_colormap(gdk_colormap_get_screen(m_cmap)))
388 {
389 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR_ALPHA );
390 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_COLOUR_ALPHA );
391 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_COLOUR_ALPHA );
392 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_COLOUR_ALPHA );
393 }
394 #endif
395 else
396 {
397 m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR );
398 m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_COLOUR );
399 m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_COLOUR );
400 m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_COLOUR );
401 }
402 }
403
404 /* background colour */
405 m_backgroundBrush = *wxWHITE_BRUSH;
406 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
407 const 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 gdk_gc_set_colormap( m_textGC, m_cmap );
419
420 /* m_penGC */
421 m_pen.GetColour().CalcPixel( m_cmap );
422 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
423 gdk_gc_set_background( m_penGC, bg_col );
424
425 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
426
427 /* m_brushGC */
428 m_brush.GetColour().CalcPixel( m_cmap );
429 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
430 gdk_gc_set_background( m_brushGC, bg_col );
431
432 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
433
434 /* m_bgGC */
435 gdk_gc_set_background( m_bgGC, bg_col );
436 gdk_gc_set_foreground( m_bgGC, bg_col );
437
438 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
439
440 /* ROPs */
441 gdk_gc_set_function( m_textGC, GDK_COPY );
442 gdk_gc_set_function( m_brushGC, GDK_COPY );
443 gdk_gc_set_function( m_penGC, GDK_COPY );
444
445 /* clipping */
446 gdk_gc_set_clip_rectangle( m_penGC, NULL );
447 gdk_gc_set_clip_rectangle( m_brushGC, NULL );
448 gdk_gc_set_clip_rectangle( m_textGC, NULL );
449 gdk_gc_set_clip_rectangle( m_bgGC, NULL );
450 }
451
452 void wxWindowDCImpl::DoGetSize( int* width, int* height ) const
453 {
454 wxCHECK_RET( m_window, wxT("GetSize() doesn't work without window") );
455
456 m_window->GetSize(width, height);
457 }
458
459 bool wxWindowDCImpl::DoFloodFill(wxCoord x, wxCoord y,
460 const wxColour& col, wxFloodFillStyle style)
461 {
462 #if wxUSE_IMAGE
463 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
464 const wxColour & col, wxFloodFillStyle style);
465
466 return wxDoFloodFill( GetOwner(), x, y, col, style);
467 #else
468 wxUnusedVar(x);
469 wxUnusedVar(y);
470 wxUnusedVar(col);
471 wxUnusedVar(style);
472
473 return false;
474 #endif
475 }
476
477 bool wxWindowDCImpl::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
478 {
479 GdkImage* image = NULL;
480 if (m_gdkwindow)
481 {
482 const int x = LogicalToDeviceX(x1);
483 const int y = LogicalToDeviceY(y1);
484 wxRect rect;
485 gdk_drawable_get_size(m_gdkwindow, &rect.width, &rect.height);
486 if (rect.Contains(x, y))
487 image = gdk_drawable_get_image(m_gdkwindow, x, y, 1, 1);
488 }
489 if (image == NULL)
490 {
491 *col = wxColour();
492 return false;
493 }
494 GdkColormap* colormap = gdk_image_get_colormap(image);
495 const unsigned pixel = gdk_image_get_pixel(image, 0, 0);
496 if (colormap == NULL)
497 *col = pixel ? m_textForegroundColour : m_textBackgroundColour;
498 else
499 {
500 GdkColor c;
501 gdk_colormap_query_color(colormap, pixel, &c);
502 col->Set(c.red >> 8, c.green >> 8, c.blue >> 8);
503 }
504 g_object_unref(image);
505 return true;
506 }
507
508 void wxWindowDCImpl::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
509 {
510 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
511
512 if ( m_pen.IsNonTransparent() )
513 {
514 if (m_gdkwindow)
515 gdk_draw_line( m_gdkwindow, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
516
517 CalcBoundingBox(x1, y1);
518 CalcBoundingBox(x2, y2);
519 }
520 }
521
522 void wxWindowDCImpl::DoCrossHair( wxCoord x, wxCoord y )
523 {
524 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
525
526 if ( m_pen.IsNonTransparent() )
527 {
528 int w = 0;
529 int h = 0;
530 GetOwner()->GetSize( &w, &h );
531 wxCoord xx = XLOG2DEV(x);
532 wxCoord yy = YLOG2DEV(y);
533 if (m_gdkwindow)
534 {
535 gdk_draw_line( m_gdkwindow, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
536 gdk_draw_line( m_gdkwindow, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
537 }
538 }
539 }
540
541 void wxWindowDCImpl::DrawingSetup(GdkGC*& gc, bool& originChanged)
542 {
543 gc = m_brushGC;
544 GdkPixmap* pixmap = NULL;
545 const int style = m_brush.GetStyle();
546
547 if (style == wxBRUSHSTYLE_STIPPLE || style == wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE)
548 {
549 const wxBitmap* stipple = m_brush.GetStipple();
550 if (stipple->IsOk())
551 {
552 if (style == wxBRUSHSTYLE_STIPPLE)
553 pixmap = stipple->GetPixmap();
554 else if (stipple->GetMask())
555 {
556 pixmap = stipple->GetPixmap();
557 gc = m_textGC;
558 }
559 }
560 }
561 else if (m_brush.IsHatch())
562 {
563 pixmap = GetHatch(style);
564 }
565
566 int origin_x = 0;
567 int origin_y = 0;
568 if (pixmap)
569 {
570 int w, h;
571 gdk_drawable_get_size(pixmap, &w, &h);
572 origin_x = m_deviceOriginX % w;
573 origin_y = m_deviceOriginY % h;
574 }
575
576 originChanged = origin_x || origin_y;
577 if (originChanged)
578 gdk_gc_set_ts_origin(gc, origin_x, origin_y);
579 }
580
581 void wxWindowDCImpl::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
582 wxCoord xc, wxCoord yc )
583 {
584 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
585
586 wxCoord xx1 = XLOG2DEV(x1);
587 wxCoord yy1 = YLOG2DEV(y1);
588 wxCoord xx2 = XLOG2DEV(x2);
589 wxCoord yy2 = YLOG2DEV(y2);
590 wxCoord xxc = XLOG2DEV(xc);
591 wxCoord yyc = YLOG2DEV(yc);
592 double dx = xx1 - xxc;
593 double dy = yy1 - yyc;
594 double radius = sqrt((double)(dx*dx+dy*dy));
595 wxCoord r = (wxCoord)radius;
596 double radius1, radius2;
597
598 if (xx1 == xx2 && yy1 == yy2)
599 {
600 radius1 = 0.0;
601 radius2 = 360.0;
602 }
603 else if ( wxIsNullDouble(radius) )
604 {
605 radius1 =
606 radius2 = 0.0;
607 }
608 else
609 {
610 radius1 = (xx1 - xxc == 0) ?
611 (yy1 - yyc < 0) ? 90.0 : -90.0 :
612 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
613 radius2 = (xx2 - xxc == 0) ?
614 (yy2 - yyc < 0) ? 90.0 : -90.0 :
615 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
616 }
617 wxCoord alpha1 = wxCoord(radius1 * 64.0);
618 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
619 while (alpha2 <= 0) alpha2 += 360*64;
620 while (alpha1 > 360*64) alpha1 -= 360*64;
621
622 if (m_gdkwindow)
623 {
624 if ( m_brush.IsNonTransparent() )
625 {
626 GdkGC* gc;
627 bool originChanged;
628 DrawingSetup(gc, originChanged);
629
630 gdk_draw_arc(m_gdkwindow, gc, true, xxc-r, yyc-r, 2*r, 2*r, alpha1, alpha2);
631
632 if (originChanged)
633 gdk_gc_set_ts_origin(gc, 0, 0);
634 }
635
636 if ( m_pen.IsNonTransparent() )
637 {
638 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
639
640 if ( m_brush.IsNonTransparent() && (alpha2 - alpha1 != 360*64) )
641 {
642 gdk_draw_line( m_gdkwindow, m_penGC, xx1, yy1, xxc, yyc );
643 gdk_draw_line( m_gdkwindow, m_penGC, xxc, yyc, xx2, yy2 );
644 }
645 }
646 }
647
648 CalcBoundingBox (x1, y1);
649 CalcBoundingBox (x2, y2);
650 }
651
652 void wxWindowDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
653 {
654 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
655
656 wxCoord xx = XLOG2DEV(x);
657 wxCoord yy = YLOG2DEV(y);
658 wxCoord ww = m_signX * XLOG2DEVREL(width);
659 wxCoord hh = m_signY * YLOG2DEVREL(height);
660
661 // CMB: handle -ve width and/or height
662 if (ww < 0) { ww = -ww; xx = xx - ww; }
663 if (hh < 0) { hh = -hh; yy = yy - hh; }
664
665 if (m_gdkwindow)
666 {
667 wxCoord start = wxCoord(sa * 64.0);
668 wxCoord end = wxCoord((ea-sa) * 64.0);
669
670 if ( m_brush.IsNonTransparent() )
671 {
672 GdkGC* gc;
673 bool originChanged;
674 DrawingSetup(gc, originChanged);
675
676 gdk_draw_arc(m_gdkwindow, gc, true, xx, yy, ww, hh, start, end);
677
678 if (originChanged)
679 gdk_gc_set_ts_origin(gc, 0, 0);
680 }
681
682 if ( m_pen.IsNonTransparent() )
683 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, ww, hh, start, end );
684 }
685
686 CalcBoundingBox (x, y);
687 CalcBoundingBox (x + width, y + height);
688 }
689
690 void wxWindowDCImpl::DoDrawPoint( wxCoord x, wxCoord y )
691 {
692 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
693
694 if ( m_pen.IsNonTransparent() && m_gdkwindow )
695 gdk_draw_point( m_gdkwindow, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
696
697 CalcBoundingBox (x, y);
698 }
699
700 void wxWindowDCImpl::DoDrawLines( int n, const wxPoint points[], wxCoord xoffset, wxCoord yoffset )
701 {
702 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
703
704 if (n <= 0) return;
705
706 if ( m_pen.IsTransparent() )
707 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 const GdkPoint* gpts = reinterpret_cast<const GdkPoint*>(points);
715 GdkPoint* gpts_alloc = NULL;
716
717 if (doScale)
718 {
719 gpts_alloc = new GdkPoint[n];
720 gpts = gpts_alloc;
721 }
722
723 for (int i = 0; i < n; i++)
724 {
725 if (doScale)
726 {
727 gpts_alloc[i].x = XLOG2DEV(points[i].x + xoffset);
728 gpts_alloc[i].y = YLOG2DEV(points[i].y + yoffset);
729 }
730 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
731 }
732
733 if (m_gdkwindow)
734 gdk_draw_lines( m_gdkwindow, m_penGC, (GdkPoint*) gpts, n);
735
736 delete[] gpts_alloc;
737 }
738
739 void wxWindowDCImpl::DoDrawPolygon( int n, const wxPoint points[],
740 wxCoord xoffset, wxCoord yoffset,
741 wxPolygonFillMode WXUNUSED(fillStyle) )
742 {
743 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
744
745 if (n <= 0) return;
746
747 //Check, if scaling is necessary
748 const bool doScale =
749 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
750
751 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
752 const GdkPoint* gdkpoints = reinterpret_cast<const GdkPoint*>(points);
753 GdkPoint* gdkpoints_alloc = NULL;
754
755 if (doScale)
756 {
757 gdkpoints_alloc = new GdkPoint[n];
758 gdkpoints = gdkpoints_alloc;
759 }
760
761 int i;
762 for (i = 0 ; i < n ; i++)
763 {
764 if (doScale)
765 {
766 gdkpoints_alloc[i].x = XLOG2DEV(points[i].x + xoffset);
767 gdkpoints_alloc[i].y = YLOG2DEV(points[i].y + yoffset);
768 }
769 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
770 }
771
772 if (m_gdkwindow)
773 {
774 if ( m_brush.IsNonTransparent() )
775 {
776 GdkGC* gc;
777 bool originChanged;
778 DrawingSetup(gc, originChanged);
779
780 gdk_draw_polygon(m_gdkwindow, gc, true, (GdkPoint*) gdkpoints, n);
781
782 if (originChanged)
783 gdk_gc_set_ts_origin(gc, 0, 0);
784 }
785
786 if ( m_pen.IsNonTransparent() )
787 {
788 /*
789 for (i = 0 ; i < n ; i++)
790 {
791 gdk_draw_line( m_gdkwindow, m_penGC,
792 gdkpoints[i%n].x,
793 gdkpoints[i%n].y,
794 gdkpoints[(i+1)%n].x,
795 gdkpoints[(i+1)%n].y);
796 }
797 */
798 gdk_draw_polygon( m_gdkwindow, m_penGC, FALSE, (GdkPoint*) gdkpoints, n );
799
800 }
801 }
802
803 delete[] gdkpoints_alloc;
804 }
805
806 void wxWindowDCImpl::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
807 {
808 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
809
810 wxCoord xx = XLOG2DEV(x);
811 wxCoord yy = YLOG2DEV(y);
812 wxCoord ww = m_signX * XLOG2DEVREL(width);
813 wxCoord hh = m_signY * YLOG2DEVREL(height);
814
815 // CMB: draw nothing if transformed w or h is 0
816 if (ww == 0 || hh == 0) return;
817
818 // CMB: handle -ve width and/or height
819 if (ww < 0) { ww = -ww; xx = xx - ww; }
820 if (hh < 0) { hh = -hh; yy = yy - hh; }
821
822 if (m_gdkwindow)
823 {
824 if ( m_brush.IsNonTransparent() )
825 {
826 GdkGC* gc;
827 bool originChanged;
828 DrawingSetup(gc, originChanged);
829
830 gdk_draw_rectangle(m_gdkwindow, gc, true, xx, yy, ww, hh);
831
832 if (originChanged)
833 gdk_gc_set_ts_origin(gc, 0, 0);
834 }
835
836 if ( m_pen.IsNonTransparent() )
837 {
838 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
839 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxPENSTYLE_SOLID))
840 {
841 // Use 2 1-line rects instead
842 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
843
844 if (m_signX == -1)
845 {
846 // Different for RTL
847 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
848 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy-1, ww, hh );
849 }
850 else
851 {
852 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
853 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx-1, yy-1, ww, hh );
854 }
855
856 // reset
857 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
858 }
859 else
860 {
861 // Just use X11 for other cases
862 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
863 }
864 }
865 }
866
867 CalcBoundingBox( x, y );
868 CalcBoundingBox( x + width, y + height );
869 }
870
871 void wxWindowDCImpl::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
872 {
873 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
874
875 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
876
877 wxCoord xx = XLOG2DEV(x);
878 wxCoord yy = YLOG2DEV(y);
879 wxCoord ww = m_signX * XLOG2DEVREL(width);
880 wxCoord hh = m_signY * YLOG2DEVREL(height);
881 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
882
883 // CMB: handle -ve width and/or height
884 if (ww < 0) { ww = -ww; xx = xx - ww; }
885 if (hh < 0) { hh = -hh; yy = yy - hh; }
886
887 // CMB: if radius is zero use DrawRectangle() instead to avoid
888 // X drawing errors with small radii
889 if (rr == 0)
890 {
891 DoDrawRectangle( x, y, width, height );
892 return;
893 }
894
895 // CMB: draw nothing if transformed w or h is 0
896 if (ww == 0 || hh == 0) return;
897
898 // CMB: adjust size if outline is drawn otherwise the result is
899 // 1 pixel too wide and high
900 if ( m_pen.IsNonTransparent() )
901 {
902 ww--;
903 hh--;
904 }
905
906 if (m_gdkwindow)
907 {
908 // CMB: ensure dd is not larger than rectangle otherwise we
909 // get an hour glass shape
910 wxCoord dd = 2 * rr;
911 if (dd > ww) dd = ww;
912 if (dd > hh) dd = hh;
913 rr = dd / 2;
914
915 if ( m_brush.IsNonTransparent() )
916 {
917 GdkGC* gc;
918 bool originChanged;
919 DrawingSetup(gc, originChanged);
920
921 gdk_draw_rectangle(m_gdkwindow, gc, true, xx+rr, yy, ww-dd+1, hh);
922 gdk_draw_rectangle(m_gdkwindow, gc, true, xx, yy+rr, ww, hh-dd+1);
923 gdk_draw_arc(m_gdkwindow, gc, true, xx, yy, dd, dd, 90*64, 90*64);
924 gdk_draw_arc(m_gdkwindow, gc, true, xx+ww-dd, yy, dd, dd, 0, 90*64);
925 gdk_draw_arc(m_gdkwindow, gc, true, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64);
926 gdk_draw_arc(m_gdkwindow, gc, true, xx, yy+hh-dd, dd, dd, 180*64, 90*64);
927
928 if (originChanged)
929 gdk_gc_set_ts_origin(gc, 0, 0);
930 }
931
932 if ( m_pen.IsNonTransparent() )
933 {
934 gdk_draw_line( m_gdkwindow, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
935 gdk_draw_line( m_gdkwindow, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
936 gdk_draw_line( m_gdkwindow, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
937 gdk_draw_line( m_gdkwindow, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
938 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
939 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
940 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
941 gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
942 }
943 }
944
945 // this ignores the radius
946 CalcBoundingBox( x, y );
947 CalcBoundingBox( x + width, y + height );
948 }
949
950 void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
951 {
952 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
953
954 wxCoord xx = XLOG2DEV(x);
955 wxCoord yy = YLOG2DEV(y);
956 wxCoord ww = m_signX * XLOG2DEVREL(width);
957 wxCoord hh = m_signY * YLOG2DEVREL(height);
958
959 // CMB: handle -ve width and/or height
960 if (ww < 0) { ww = -ww; xx = xx - ww; }
961 if (hh < 0) { hh = -hh; yy = yy - hh; }
962
963 if (m_gdkwindow)
964 {
965 if ( m_brush.IsNonTransparent() )
966 {
967 GdkGC* gc;
968 bool originChanged;
969 DrawingSetup(gc, originChanged);
970
971 // If the pen is transparent pen we increase the size
972 // for better compatibility with other platforms.
973 if (m_pen.IsTransparent())
974 {
975 ++ww;
976 ++hh;
977 }
978
979 gdk_draw_arc(m_gdkwindow, gc, true, xx, yy, ww, hh, 0, 360*64);
980
981 if (originChanged)
982 gdk_gc_set_ts_origin(gc, 0, 0);
983 }
984
985 if ( m_pen.IsNonTransparent() )
986 gdk_draw_arc( m_gdkwindow, m_penGC, false, xx, yy, ww, hh, 0, 360*64 );
987 }
988
989 CalcBoundingBox( x, y );
990 CalcBoundingBox( x + width, y + height );
991 }
992
993 void wxWindowDCImpl::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
994 {
995 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
996 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
997 }
998
999 // scale a pixbuf
1000 static GdkPixbuf*
1001 Scale(GdkPixbuf* pixbuf, int dst_w, int dst_h, double sx, double sy)
1002 {
1003 GdkPixbuf* pixbuf_scaled = gdk_pixbuf_new(
1004 GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf), 8, dst_w, dst_h);
1005 gdk_pixbuf_scale(pixbuf, pixbuf_scaled,
1006 0, 0, dst_w, dst_h, 0, 0, sx, sy, GDK_INTERP_NEAREST);
1007 return pixbuf_scaled;
1008 }
1009
1010 // scale part of a pixmap using pixbuf scaling
1011 static GdkPixbuf*
1012 Scale(GdkPixmap* pixmap, int x, int y, int w, int h, int dst_w, int dst_h, double sx, double sy)
1013 {
1014 GdkPixbuf* pixbuf = gdk_pixbuf_get_from_drawable(
1015 NULL, pixmap, NULL, x, y, 0, 0, w, h);
1016 GdkPixbuf* pixbuf2 = Scale(pixbuf, dst_w, dst_h, sx, sy);
1017 g_object_unref(pixbuf);
1018 return pixbuf2;
1019 }
1020
1021 // scale part of a mask pixmap
1022 static GdkPixmap*
1023 ScaleMask(GdkPixmap* mask, int x, int y, int w, int h, int dst_w, int dst_h, double sx, double sy)
1024 {
1025 GdkPixbuf* pixbuf = Scale(mask, x, y, w, h, dst_w, dst_h, sx, sy);
1026
1027 // convert black and white pixbuf back to a mono pixmap
1028 const unsigned out_rowstride = (dst_w + 7) / 8;
1029 const size_t data_size = out_rowstride * size_t(dst_h);
1030 char* data = new char[data_size];
1031 char* out = data;
1032 const guchar* row = gdk_pixbuf_get_pixels(pixbuf);
1033 const int rowstride = gdk_pixbuf_get_rowstride(pixbuf);
1034 memset(data, 0, data_size);
1035 for (int j = 0; j < dst_h; j++, row += rowstride, out += out_rowstride)
1036 {
1037 const guchar* in = row;
1038 for (int i = 0; i < dst_w; i++, in += 3)
1039 if (*in)
1040 out[i >> 3] |= 1 << (i & 7);
1041 }
1042 g_object_unref(pixbuf);
1043 GdkPixmap* pixmap = gdk_bitmap_create_from_data(mask, data, dst_w, dst_h);
1044 delete[] data;
1045 return pixmap;
1046 }
1047
1048 // Make a new mask from part of a mask and a clip region.
1049 static GdkPixmap*
1050 ClipMask(GdkPixmap* mask, GdkRegion* clipRegion, int x, int y, int dst_x, int dst_y, int w, int h)
1051 {
1052 GdkGCValues gcValues;
1053 gcValues.foreground.pixel = 0;
1054 GdkGC* gc = gdk_gc_new_with_values(mask, &gcValues, GDK_GC_FOREGROUND);
1055 GdkPixmap* pixmap = gdk_pixmap_new(mask, w, h, 1);
1056 // clear new mask, so clipped areas will be masked
1057 gdk_draw_rectangle(pixmap, gc, true, 0, 0, w, h);
1058 gdk_gc_set_clip_region(gc, clipRegion);
1059 gdk_gc_set_clip_origin(gc, -dst_x, -dst_y);
1060 // draw old mask onto new one, with clip
1061 gdk_draw_drawable(pixmap, gc, mask, x, y, 0, 0, w, h);
1062 g_object_unref(gc);
1063 return pixmap;
1064 }
1065
1066 // make a color pixmap from part of a mono one, using text fg/bg colors
1067 GdkPixmap*
1068 wxWindowDCImpl::MonoToColor(GdkPixmap* monoPixmap, int x, int y, int w, int h) const
1069 {
1070 GdkPixmap* pixmap = gdk_pixmap_new(m_gdkwindow, w, h, -1);
1071 GdkGCValues gcValues;
1072 gcValues.foreground.pixel = m_textForegroundColour.GetColor()->pixel;
1073 gcValues.background.pixel = m_textBackgroundColour.GetColor()->pixel;
1074 gcValues.stipple = monoPixmap;
1075 gcValues.fill = GDK_OPAQUE_STIPPLED;
1076 gcValues.ts_x_origin = -x;
1077 gcValues.ts_y_origin = -y;
1078 GdkGC* gc = gdk_gc_new_with_values(pixmap, &gcValues, GdkGCValuesMask(
1079 GDK_GC_FOREGROUND | GDK_GC_BACKGROUND | GDK_GC_STIPPLE | GDK_GC_FILL |
1080 GDK_GC_TS_X_ORIGIN | GDK_GC_TS_Y_ORIGIN));
1081 gdk_draw_rectangle(pixmap, gc, true, 0, 0, w, h);
1082 g_object_unref(gc);
1083 return pixmap;
1084 }
1085
1086 void wxWindowDCImpl::DoDrawBitmap( const wxBitmap &bitmap,
1087 wxCoord x, wxCoord y,
1088 bool useMask )
1089 {
1090 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1091 wxCHECK_RET( bitmap.IsOk(), wxT("invalid bitmap") );
1092
1093 if (!m_gdkwindow) return;
1094
1095 const int w = bitmap.GetWidth();
1096 const int h = bitmap.GetHeight();
1097
1098 // notice that as the bitmap is not drawn upside down (or right to left)
1099 // even if the corresponding axis direction is inversed, we need to take it
1100 // into account when calculating its bounding box
1101 CalcBoundingBox(x, y);
1102 CalcBoundingBox(x + m_signX*w, y + m_signY*h);
1103
1104 // device coords
1105 int xx = LogicalToDeviceX(x);
1106 const int yy = LogicalToDeviceY(y);
1107 const int ww = LogicalToDeviceXRel(w);
1108 const int hh = LogicalToDeviceYRel(h);
1109
1110 if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
1111 xx -= ww;
1112
1113 GdkRegion* const clipRegion = m_currentClippingRegion.GetRegion();
1114 // determine clip region overlap
1115 int overlap = wxInRegion;
1116 if (clipRegion)
1117 {
1118 overlap = m_currentClippingRegion.Contains(xx, yy, ww, hh);
1119 if (overlap == wxOutRegion)
1120 return;
1121 }
1122
1123 const bool isScaled = ww != w || hh != h;
1124 const bool hasAlpha = bitmap.HasAlpha();
1125 GdkGC* const use_gc = m_penGC;
1126
1127 GdkPixmap* mask = NULL;
1128 // mask does not work when drawing a pixbuf with alpha
1129 if (useMask && !hasAlpha)
1130 {
1131 wxMask* m = bitmap.GetMask();
1132 if (m)
1133 mask = *m;
1134 }
1135
1136 GdkPixmap* mask_new = NULL;
1137 if (mask)
1138 {
1139 if (isScaled)
1140 {
1141 mask = ScaleMask(mask, 0, 0, w, h, ww, hh, m_scaleX, m_scaleY);
1142 mask_new = mask;
1143 }
1144 if (overlap == wxPartRegion)
1145 {
1146 // need a new mask that also masks the clipped area,
1147 // because gc can't have both a mask and a clip region
1148 mask = ClipMask(mask, clipRegion, 0, 0, xx, yy, ww, hh);
1149 if (mask_new)
1150 g_object_unref(mask_new);
1151 mask_new = mask;
1152 }
1153 gdk_gc_set_clip_mask(use_gc, mask);
1154 gdk_gc_set_clip_origin(use_gc, xx, yy);
1155 }
1156
1157 // determine whether to use pixmap or pixbuf
1158 GdkPixmap* pixmap = NULL;
1159 GdkPixmap* pixmap_new = NULL;
1160 GdkPixbuf* pixbuf = NULL;
1161 GdkPixbuf* pixbuf_new = NULL;
1162 if (bitmap.HasPixmap())
1163 pixmap = bitmap.GetPixmap();
1164 if (pixmap && gdk_drawable_get_depth(pixmap) == 1)
1165 {
1166 if (gdk_drawable_get_depth(m_gdkwindow) != 1)
1167 {
1168 // convert mono pixmap to color using text fg/bg colors
1169 pixmap = MonoToColor(pixmap, 0, 0, w, h);
1170 pixmap_new = pixmap;
1171 }
1172 }
1173 else if (hasAlpha || pixmap == NULL)
1174 pixbuf = bitmap.GetPixbuf();
1175
1176 if (isScaled)
1177 {
1178 if (pixbuf)
1179 pixbuf = Scale(pixbuf, ww, hh, m_scaleX, m_scaleY);
1180 else
1181 pixbuf = Scale(pixmap, 0, 0, w, h, ww, hh, m_scaleX, m_scaleY);
1182
1183 pixbuf_new = pixbuf;
1184 }
1185
1186 if (pixbuf)
1187 {
1188 gdk_draw_pixbuf(m_gdkwindow, use_gc, pixbuf,
1189 0, 0, xx, yy, ww, hh, GDK_RGB_DITHER_NORMAL, 0, 0);
1190 }
1191 else
1192 {
1193 gdk_draw_drawable(m_gdkwindow, use_gc, pixmap, 0, 0, xx, yy, ww, hh);
1194 }
1195
1196 if (pixbuf_new)
1197 g_object_unref(pixbuf_new);
1198 if (pixmap_new)
1199 g_object_unref(pixmap_new);
1200 if (mask)
1201 {
1202 gdk_gc_set_clip_region(use_gc, clipRegion);
1203
1204 // Notice that we can only release the mask now, we can't do it before
1205 // the calls to gdk_draw_xxx() above as they crash with X error with
1206 // GTK+ up to 2.20.1 (i.e. it works with 2.20 but is known to not work
1207 // with 2.16.1 and below).
1208 if (mask_new)
1209 g_object_unref(mask_new);
1210 }
1211 }
1212
1213 bool wxWindowDCImpl::DoBlit( wxCoord xdest, wxCoord ydest,
1214 wxCoord width, wxCoord height,
1215 wxDC *source,
1216 wxCoord xsrc, wxCoord ysrc,
1217 wxRasterOperationMode logical_func,
1218 bool useMask,
1219 wxCoord xsrcMask, wxCoord ysrcMask )
1220 {
1221 wxCHECK_MSG( IsOk(), false, wxT("invalid window dc") );
1222 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1223
1224 if (!m_gdkwindow) return false;
1225
1226 GdkDrawable* srcDrawable = NULL;
1227 GdkPixmap* mask = NULL;
1228 wxMemoryDC* memDC = wxDynamicCast(source, wxMemoryDC);
1229 if (memDC)
1230 {
1231 const wxBitmap& bitmap = memDC->GetSelectedBitmap();
1232 if (!bitmap.IsOk())
1233 return false;
1234 srcDrawable = bitmap.GetPixmap();
1235 if (useMask)
1236 {
1237 wxMask* m = bitmap.GetMask();
1238 if (m)
1239 mask = *m;
1240 }
1241 }
1242 else
1243 {
1244 wxDCImpl* impl = source->GetImpl();
1245 wxWindowDCImpl* gtk_impl = wxDynamicCast(impl, wxWindowDCImpl);
1246 if (gtk_impl)
1247 srcDrawable = gtk_impl->GetGDKWindow();
1248 if (srcDrawable == NULL)
1249 return false;
1250 }
1251
1252 CalcBoundingBox(xdest, ydest);
1253 CalcBoundingBox(xdest + width, ydest + height);
1254
1255 // source device coords
1256 int src_x = source->LogicalToDeviceX(xsrc);
1257 int src_y = source->LogicalToDeviceY(ysrc);
1258 int src_w = source->LogicalToDeviceXRel(width);
1259 int src_h = source->LogicalToDeviceYRel(height);
1260
1261 // Clip source rect to source dc.
1262 // Only necessary when scaling, to avoid GDK errors when
1263 // converting to pixbuf, but no harm in always doing it.
1264 // If source rect changes, it also changes the dest rect.
1265 wxRect clip;
1266 gdk_drawable_get_size(srcDrawable, &clip.width, &clip.height);
1267 clip.Intersect(wxRect(src_x, src_y, src_w, src_h));
1268 if (src_w != clip.width || src_h != clip.height)
1269 {
1270 if (clip.width == 0)
1271 return true;
1272
1273 src_w = clip.width;
1274 src_h = clip.height;
1275 width = source->DeviceToLogicalXRel(src_w);
1276 height = source->DeviceToLogicalYRel(src_h);
1277 if (src_x != clip.x || src_y != clip.y)
1278 {
1279 xdest += source->DeviceToLogicalXRel(clip.x - src_x);
1280 ydest += source->DeviceToLogicalYRel(clip.y - src_y);
1281 src_x = clip.x;
1282 src_y = clip.y;
1283 }
1284 }
1285
1286 // destination device coords
1287 const int dst_x = LogicalToDeviceX(xdest);
1288 const int dst_y = LogicalToDeviceY(ydest);
1289 const int dst_w = LogicalToDeviceXRel(width);
1290 const int dst_h = LogicalToDeviceYRel(height);
1291
1292 GdkRegion* const clipRegion = m_currentClippingRegion.GetRegion();
1293 // determine dest clip region overlap
1294 int overlap = wxInRegion;
1295 if (clipRegion)
1296 {
1297 overlap = m_currentClippingRegion.Contains(dst_x, dst_y, dst_w, dst_h);
1298 if (overlap == wxOutRegion)
1299 return true;
1300 }
1301
1302 const bool isScaled = src_w != dst_w || src_h != dst_h;
1303 double scale_x = 0;
1304 double scale_y = 0;
1305 if (isScaled)
1306 {
1307 // get source to dest scale
1308 double usx, usy, lsx, lsy;
1309 source->GetUserScale(&usx, &usy);
1310 source->GetLogicalScale(&lsx, &lsy);
1311 scale_x = m_scaleX / (usx * lsx);
1312 scale_y = m_scaleY / (usy * lsy);
1313 }
1314
1315 GdkGC* const use_gc = m_penGC;
1316
1317 if (mask)
1318 {
1319 int srcMask_x = src_x;
1320 int srcMask_y = src_y;
1321 if (xsrcMask != -1 || ysrcMask != -1)
1322 {
1323 srcMask_x = source->LogicalToDeviceX(xsrcMask);
1324 srcMask_y = source->LogicalToDeviceY(ysrcMask);
1325 }
1326 GdkPixmap* mask_new = NULL;
1327 if (isScaled)
1328 {
1329 mask = ScaleMask(mask, srcMask_x, srcMask_y,
1330 src_w, src_h, dst_w, dst_h, scale_x, scale_y);
1331 mask_new = mask;
1332 srcMask_x = 0;
1333 srcMask_y = 0;
1334 }
1335 if (overlap == wxPartRegion)
1336 {
1337 // need a new mask that also masks the clipped area,
1338 // because gc can't have both a mask and a clip region
1339 mask = ClipMask(mask, clipRegion,
1340 srcMask_x, srcMask_y, dst_x, dst_y, dst_w, dst_h);
1341 if (mask_new)
1342 g_object_unref(mask_new);
1343 mask_new = mask;
1344 srcMask_x = 0;
1345 srcMask_y = 0;
1346 }
1347 gdk_gc_set_clip_mask(use_gc, mask);
1348 gdk_gc_set_clip_origin(use_gc, dst_x - srcMask_x, dst_y - srcMask_y);
1349 if (mask_new)
1350 g_object_unref(mask_new);
1351 }
1352
1353 GdkPixmap* pixmap = NULL;
1354 if (gdk_drawable_get_depth(srcDrawable) == 1 &&
1355 (gdk_drawable_get_depth(m_gdkwindow) != 1 || isScaled))
1356 {
1357 // Convert mono pixmap to color using text fg/bg colors.
1358 // Scaling/drawing is simpler if this is done first.
1359 pixmap = MonoToColor(srcDrawable, src_x, src_y, src_w, src_h);
1360 srcDrawable = pixmap;
1361 src_x = 0;
1362 src_y = 0;
1363 }
1364
1365 const wxRasterOperationMode logical_func_save = m_logicalFunction;
1366 SetLogicalFunction(logical_func);
1367 if (memDC == NULL)
1368 gdk_gc_set_subwindow(use_gc, GDK_INCLUDE_INFERIORS);
1369
1370 if (isScaled)
1371 {
1372 GdkPixbuf* pixbuf = Scale(srcDrawable,
1373 src_x, src_y, src_w, src_h, dst_w, dst_h, scale_x, scale_y);
1374 gdk_draw_pixbuf(m_gdkwindow, use_gc, pixbuf,
1375 0, 0, dst_x, dst_y, dst_w, dst_h, GDK_RGB_DITHER_NONE, 0, 0);
1376 g_object_unref(pixbuf);
1377 }
1378 else
1379 {
1380 gdk_draw_drawable(m_gdkwindow, use_gc, srcDrawable,
1381 src_x, src_y, dst_x, dst_y, dst_w, dst_h);
1382 }
1383
1384 SetLogicalFunction(logical_func_save);
1385 if (memDC == NULL)
1386 gdk_gc_set_subwindow(use_gc, GDK_CLIP_BY_CHILDREN);
1387
1388 if (pixmap)
1389 g_object_unref(pixmap);
1390 if (mask)
1391 gdk_gc_set_clip_region(use_gc, clipRegion);
1392
1393 return true;
1394 }
1395
1396 void wxWindowDCImpl::DoDrawText(const wxString& text,
1397 wxCoord xLogical,
1398 wxCoord yLogical)
1399 {
1400 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1401
1402 if (!m_gdkwindow) return;
1403
1404 if (text.empty()) return;
1405
1406 wxCoord x = XLOG2DEV(xLogical),
1407 y = YLOG2DEV(yLogical);
1408
1409 wxCHECK_RET( m_context, wxT("no Pango context") );
1410 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1411 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1412
1413 gdk_pango_context_set_colormap( m_context, m_cmap ); // not needed in gtk+ >= 2.6
1414
1415 wxCharBuffer data = wxGTK_CONV(text);
1416 if ( !data )
1417 return;
1418
1419 pango_layout_set_text(m_layout, data, data.length());
1420 const bool setAttrs = m_font.GTKSetPangoAttrs(m_layout);
1421
1422 int oldSize = 0;
1423 const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001;
1424 if (isScaled)
1425 {
1426 // If there is a user or actually any scale applied to
1427 // the device context, scale the font.
1428
1429 // scale font description
1430 oldSize = pango_font_description_get_size(m_fontdesc);
1431 pango_font_description_set_size(m_fontdesc, int(oldSize * m_scaleY));
1432
1433 // actually apply scaled font
1434 pango_layout_set_font_description( m_layout, m_fontdesc );
1435 }
1436
1437 int w, h;
1438 pango_layout_get_pixel_size(m_layout, &w, &h);
1439
1440 // Draw layout.
1441 int x_rtl = x;
1442 if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft)
1443 x_rtl -= w;
1444
1445 const GdkColor* bg_col = NULL;
1446 if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
1447 bg_col = m_textBackgroundColour.GetColor();
1448
1449 gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x_rtl, y, m_layout, NULL, bg_col);
1450
1451 if (isScaled)
1452 {
1453 // reset unscaled size
1454 pango_font_description_set_size( m_fontdesc, oldSize );
1455
1456 // actually apply unscaled font
1457 pango_layout_set_font_description( m_layout, m_fontdesc );
1458 }
1459 if (setAttrs)
1460 {
1461 // undo underline attributes setting:
1462 pango_layout_set_attributes(m_layout, NULL);
1463 }
1464
1465 CalcBoundingBox(xLogical + int(w / m_scaleX), yLogical + int(h / m_scaleY));
1466 CalcBoundingBox(xLogical, yLogical);
1467 }
1468
1469 // TODO: When GTK2.6 is required, merge DoDrawText and DoDrawRotatedText to
1470 // avoid code duplication
1471 void wxWindowDCImpl::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1472 {
1473 if (!m_gdkwindow || text.empty())
1474 return;
1475
1476 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1477
1478 x = XLOG2DEV(x);
1479 y = YLOG2DEV(y);
1480
1481 pango_layout_set_text(m_layout, wxGTK_CONV(text), -1);
1482 const bool setAttrs = m_font.GTKSetPangoAttrs(m_layout);
1483 int oldSize = 0;
1484 const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001;
1485 if (isScaled)
1486 {
1487 //TODO: when Pango >= 1.6 is required, use pango_matrix_scale()
1488 // If there is a user or actually any scale applied to
1489 // the device context, scale the font.
1490
1491 // scale font description
1492 oldSize = pango_font_description_get_size(m_fontdesc);
1493 pango_font_description_set_size(m_fontdesc, int(oldSize * m_scaleY));
1494
1495 // actually apply scaled font
1496 pango_layout_set_font_description( m_layout, m_fontdesc );
1497 }
1498
1499 int w, h;
1500 pango_layout_get_pixel_size(m_layout, &w, &h);
1501
1502 const GdkColor* bg_col = NULL;
1503 if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
1504 bg_col = m_textBackgroundColour.GetColor();
1505
1506 // rotate the text
1507 PangoMatrix matrix = PANGO_MATRIX_INIT;
1508 pango_matrix_rotate (&matrix, angle);
1509 pango_context_set_matrix (m_context, &matrix);
1510 pango_layout_context_changed (m_layout);
1511
1512 // To be compatible with MSW, the rotation axis must be in the old
1513 // top-left corner.
1514 // Calculate the vertices of the rotated rectangle containing the text,
1515 // relative to the old top-left vertex.
1516 // We could use the matrix for this, but it's simpler with trignonometry.
1517 double rad = DegToRad(angle);
1518 // the rectangle vertices are counted clockwise with the first one
1519 // being at (0, 0)
1520 double x2 = w * cos(rad);
1521 double y2 = -w * sin(rad); // y axis points to the bottom, hence minus
1522 double x4 = h * sin(rad);
1523 double y4 = h * cos(rad);
1524 double x3 = x4 + x2;
1525 double y3 = y4 + y2;
1526 // Then we calculate max and min of the rotated rectangle.
1527 wxCoord maxX = (wxCoord)(dmax(dmax(0, x2), dmax(x3, x4)) + 0.5),
1528 maxY = (wxCoord)(dmax(dmax(0, y2), dmax(y3, y4)) + 0.5),
1529 minX = (wxCoord)(dmin(dmin(0, x2), dmin(x3, x4)) - 0.5),
1530 minY = (wxCoord)(dmin(dmin(0, y2), dmin(y3, y4)) - 0.5);
1531
1532 gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x+minX, y+minY,
1533 m_layout, NULL, bg_col);
1534
1535 if (setAttrs)
1536 pango_layout_set_attributes(m_layout, NULL);
1537
1538 // clean up the transformation matrix
1539 pango_context_set_matrix(m_context, NULL);
1540
1541 if (isScaled)
1542 {
1543 // reset unscaled size
1544 pango_font_description_set_size( m_fontdesc, oldSize );
1545
1546 // actually apply unscaled font
1547 pango_layout_set_font_description( m_layout, m_fontdesc );
1548 }
1549
1550 CalcBoundingBox(x+minX, y+minY);
1551 CalcBoundingBox(x+maxX, y+maxY);
1552 }
1553
1554 void wxWindowDCImpl::DoGetTextExtent(const wxString &string,
1555 wxCoord *width, wxCoord *height,
1556 wxCoord *descent, wxCoord *externalLeading,
1557 const wxFont *theFont) const
1558 {
1559 // ensure we work with a valid font
1560 const wxFont *fontToUse;
1561 if ( !theFont || !theFont->IsOk() )
1562 fontToUse = &m_font;
1563 else
1564 fontToUse = theFont;
1565
1566 wxCHECK_RET( fontToUse->IsOk(), wxT("invalid font") );
1567
1568 wxTextMeasure txm(GetOwner(), fontToUse);
1569 txm.GetTextExtent(string, width, height, descent, externalLeading);
1570 }
1571
1572
1573 bool wxWindowDCImpl::DoGetPartialTextExtents(const wxString& text,
1574 wxArrayInt& widths) const
1575 {
1576 wxCHECK_MSG( m_font.IsOk(), false, wxT("Invalid font") );
1577
1578 wxTextMeasure txm(GetOwner(), &m_font);
1579 return txm.GetPartialTextExtents(text, widths, m_scaleX);
1580 }
1581
1582
1583 wxCoord wxWindowDCImpl::GetCharWidth() const
1584 {
1585 pango_layout_set_text( m_layout, "H", 1 );
1586 int w;
1587 pango_layout_get_pixel_size( m_layout, &w, NULL );
1588 return w;
1589 }
1590
1591 wxCoord wxWindowDCImpl::GetCharHeight() const
1592 {
1593 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1594 wxCHECK_MSG( metrics, -1, wxT("failed to get pango font metrics") );
1595
1596 wxCoord h = PANGO_PIXELS (pango_font_metrics_get_descent (metrics) +
1597 pango_font_metrics_get_ascent (metrics));
1598 pango_font_metrics_unref (metrics);
1599 return h;
1600 }
1601
1602 void wxWindowDCImpl::Clear()
1603 {
1604 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1605
1606 if (!m_gdkwindow) return;
1607
1608 int width,height;
1609 DoGetSize( &width, &height );
1610 gdk_draw_rectangle( m_gdkwindow, m_bgGC, TRUE, 0, 0, width, height );
1611 }
1612
1613 void wxWindowDCImpl::SetFont( const wxFont &font )
1614 {
1615 m_font = font;
1616
1617 if (m_font.IsOk())
1618 {
1619 if (m_fontdesc)
1620 pango_font_description_free( m_fontdesc );
1621
1622 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1623
1624
1625 if (m_window)
1626 {
1627 PangoContext *oldContext = m_context;
1628
1629 m_context = m_window->GTKGetPangoDefaultContext();
1630
1631 // If we switch back/forth between different contexts
1632 // we also have to create a new layout. I think so,
1633 // at least, and it doesn't hurt to do it.
1634 if (oldContext != m_context)
1635 {
1636 if (m_layout)
1637 g_object_unref (m_layout);
1638
1639 m_layout = pango_layout_new( m_context );
1640 }
1641 }
1642
1643 pango_layout_set_font_description( m_layout, m_fontdesc );
1644 }
1645 }
1646
1647 void wxWindowDCImpl::SetPen( const wxPen &pen )
1648 {
1649 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1650
1651 if (m_pen == pen) return;
1652
1653 m_pen = pen;
1654
1655 if (!m_pen.IsOk()) return;
1656
1657 if (!m_gdkwindow) return;
1658
1659 gint width = m_pen.GetWidth();
1660 if (width <= 0)
1661 {
1662 // CMB: if width is non-zero scale it with the dc
1663 width = 1;
1664 }
1665 else
1666 {
1667 // X doesn't allow different width in x and y and so we take
1668 // the average
1669 double w = 0.5 +
1670 ( fabs((double) XLOG2DEVREL(width)) +
1671 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1672 width = (int)w;
1673 if ( !width )
1674 {
1675 // width can't be 0 or an internal GTK error occurs inside
1676 // gdk_gc_set_dashes() below
1677 width = 1;
1678 }
1679 }
1680
1681 static const wxGTKDash dotted[] = {1, 1};
1682 static const wxGTKDash short_dashed[] = {2, 2};
1683 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1684 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1685
1686 // We express dash pattern in pen width unit, so we are
1687 // independent of zoom factor and so on...
1688 int req_nb_dash;
1689 const wxGTKDash *req_dash;
1690
1691 GdkLineStyle lineStyle = GDK_LINE_ON_OFF_DASH;
1692 switch (m_pen.GetStyle())
1693 {
1694 case wxPENSTYLE_USER_DASH:
1695 req_nb_dash = m_pen.GetDashCount();
1696 req_dash = (wxGTKDash*)m_pen.GetDash();
1697 break;
1698 case wxPENSTYLE_DOT:
1699 req_nb_dash = 2;
1700 req_dash = dotted;
1701 break;
1702 case wxPENSTYLE_LONG_DASH:
1703 req_nb_dash = 2;
1704 req_dash = wxCoord_dashed;
1705 break;
1706 case wxPENSTYLE_SHORT_DASH:
1707 req_nb_dash = 2;
1708 req_dash = short_dashed;
1709 break;
1710 case wxPENSTYLE_DOT_DASH:
1711 req_nb_dash = 4;
1712 req_dash = dotted_dashed;
1713 break;
1714
1715 case wxPENSTYLE_TRANSPARENT:
1716 case wxPENSTYLE_STIPPLE_MASK_OPAQUE:
1717 case wxPENSTYLE_STIPPLE:
1718 case wxPENSTYLE_SOLID:
1719 default:
1720 lineStyle = GDK_LINE_SOLID;
1721 req_dash = NULL;
1722 req_nb_dash = 0;
1723 break;
1724 }
1725
1726 if (req_dash && req_nb_dash)
1727 {
1728 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1729 if (real_req_dash)
1730 {
1731 for (int i = 0; i < req_nb_dash; i++)
1732 real_req_dash[i] = req_dash[i] * width;
1733 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1734 delete[] real_req_dash;
1735 }
1736 else
1737 {
1738 // No Memory. We use non-scaled dash pattern...
1739 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1740 }
1741 }
1742
1743 GdkCapStyle capStyle = GDK_CAP_ROUND;
1744 switch (m_pen.GetCap())
1745 {
1746 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1747 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1748 case wxCAP_ROUND:
1749 default:
1750 if (width <= 1)
1751 {
1752 width = 0;
1753 capStyle = GDK_CAP_NOT_LAST;
1754 }
1755 break;
1756 }
1757
1758 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1759 switch (m_pen.GetJoin())
1760 {
1761 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1762 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1763 case wxJOIN_ROUND:
1764 default: { joinStyle = GDK_JOIN_ROUND; break; }
1765 }
1766
1767 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1768
1769 m_pen.GetColour().CalcPixel( m_cmap );
1770 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1771 }
1772
1773 void wxWindowDCImpl::SetBrush( const wxBrush &brush )
1774 {
1775 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1776
1777 if (m_brush == brush) return;
1778
1779 m_brush = brush;
1780
1781 if (!m_brush.IsOk()) return;
1782
1783 if (!m_gdkwindow) return;
1784
1785 m_brush.GetColour().CalcPixel( m_cmap );
1786 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1787
1788 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
1789
1790 if ((m_brush.GetStyle() == wxBRUSHSTYLE_STIPPLE) && (m_brush.GetStipple()->IsOk()))
1791 {
1792 if (m_brush.GetStipple()->GetDepth() != 1)
1793 {
1794 gdk_gc_set_fill( m_brushGC, GDK_TILED );
1795 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1796 }
1797 else
1798 {
1799 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1800 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1801 }
1802 }
1803
1804 if ((m_brush.GetStyle() == wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1805 {
1806 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
1807 gdk_gc_set_stipple( m_textGC, *m_brush.GetStipple()->GetMask() );
1808 }
1809
1810 if (m_brush.IsHatch())
1811 {
1812 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1813 gdk_gc_set_stipple(m_brushGC, GetHatch(m_brush.GetStyle()));
1814 }
1815 }
1816
1817 void wxWindowDCImpl::SetBackground( const wxBrush &brush )
1818 {
1819 /* CMB 21/7/98: Added SetBackground. Sets background brush
1820 * for Clear() and bg colour for shapes filled with cross-hatch brush */
1821
1822 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1823
1824 if (m_backgroundBrush == brush) return;
1825
1826 m_backgroundBrush = brush;
1827
1828 if (!m_backgroundBrush.IsOk()) return;
1829
1830 if (!m_gdkwindow) return;
1831
1832 wxColor color = m_backgroundBrush.GetColour();
1833 color.CalcPixel(m_cmap);
1834 const GdkColor* gdkColor = color.GetColor();
1835 gdk_gc_set_background(m_brushGC, gdkColor);
1836 gdk_gc_set_background(m_penGC, gdkColor);
1837 gdk_gc_set_background(m_bgGC, gdkColor);
1838 gdk_gc_set_foreground(m_bgGC, gdkColor);
1839
1840
1841 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
1842
1843 if (m_backgroundBrush.GetStyle() == wxBRUSHSTYLE_STIPPLE)
1844 {
1845 const wxBitmap* stipple = m_backgroundBrush.GetStipple();
1846 if (stipple->IsOk())
1847 {
1848 if (stipple->GetDepth() != 1)
1849 {
1850 gdk_gc_set_fill(m_bgGC, GDK_TILED);
1851 gdk_gc_set_tile(m_bgGC, stipple->GetPixmap());
1852 }
1853 else
1854 {
1855 gdk_gc_set_fill(m_bgGC, GDK_STIPPLED);
1856 gdk_gc_set_stipple(m_bgGC, stipple->GetPixmap());
1857 }
1858 }
1859 }
1860 else if (m_backgroundBrush.IsHatch())
1861 {
1862 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
1863 gdk_gc_set_stipple(m_bgGC, GetHatch(m_backgroundBrush.GetStyle()));
1864 }
1865 }
1866
1867 void wxWindowDCImpl::SetLogicalFunction( wxRasterOperationMode function )
1868 {
1869 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1870
1871 if (m_logicalFunction == function)
1872 return;
1873
1874 // VZ: shouldn't this be a CHECK?
1875 if (!m_gdkwindow)
1876 return;
1877
1878 GdkFunction mode;
1879 switch (function)
1880 {
1881 case wxXOR: mode = GDK_XOR; break;
1882 case wxINVERT: mode = GDK_INVERT; break;
1883 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
1884 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
1885 case wxCLEAR: mode = GDK_CLEAR; break;
1886 case wxSET: mode = GDK_SET; break;
1887 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
1888 case wxAND: mode = GDK_AND; break;
1889 case wxOR: mode = GDK_OR; break;
1890 case wxEQUIV: mode = GDK_EQUIV; break;
1891 case wxNAND: mode = GDK_NAND; break;
1892 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
1893 case wxCOPY: mode = GDK_COPY; break;
1894 case wxNO_OP: mode = GDK_NOOP; break;
1895 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
1896 case wxNOR: mode = GDK_NOR; break;
1897 default:
1898 wxFAIL_MSG("unknown mode");
1899 return;
1900 }
1901
1902 m_logicalFunction = function;
1903
1904 gdk_gc_set_function( m_penGC, mode );
1905 gdk_gc_set_function( m_brushGC, mode );
1906
1907 // to stay compatible with wxMSW, we don't apply ROPs to the text
1908 // operations (i.e. DrawText/DrawRotatedText).
1909 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
1910 gdk_gc_set_function( m_textGC, mode );
1911 }
1912
1913 void wxWindowDCImpl::SetTextForeground( const wxColour &col )
1914 {
1915 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1916
1917 // don't set m_textForegroundColour to an invalid colour as we'd crash
1918 // later then (we use m_textForegroundColour.GetColor() without checking
1919 // in a few places)
1920 if ( !col.IsOk() || (m_textForegroundColour == col) )
1921 return;
1922
1923 m_textForegroundColour = col;
1924
1925 if ( m_gdkwindow )
1926 {
1927 m_textForegroundColour.CalcPixel( m_cmap );
1928 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
1929 }
1930 }
1931
1932 void wxWindowDCImpl::SetTextBackground( const wxColour &col )
1933 {
1934 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1935
1936 // same as above
1937 if ( !col.IsOk() || (m_textBackgroundColour == col) )
1938 return;
1939
1940 m_textBackgroundColour = col;
1941
1942 if ( m_gdkwindow )
1943 {
1944 m_textBackgroundColour.CalcPixel( m_cmap );
1945 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
1946 }
1947 }
1948
1949 void wxWindowDCImpl::SetBackgroundMode( int mode )
1950 {
1951 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1952
1953 m_backgroundMode = mode;
1954 }
1955
1956 void wxWindowDCImpl::SetPalette( const wxPalette& WXUNUSED(palette) )
1957 {
1958 wxFAIL_MSG( wxT("wxWindowDCImpl::SetPalette not implemented") );
1959 }
1960
1961 void wxWindowDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1962 {
1963 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1964
1965 if (!m_gdkwindow) return;
1966
1967 wxRect rect;
1968 rect.x = XLOG2DEV(x);
1969 rect.y = YLOG2DEV(y);
1970 rect.width = XLOG2DEVREL(width);
1971 rect.height = YLOG2DEVREL(height);
1972
1973 if (m_window && m_window->m_wxwindow &&
1974 (m_window->GetLayoutDirection() == wxLayout_RightToLeft))
1975 {
1976 rect.x -= rect.width;
1977 }
1978
1979 DoSetDeviceClippingRegion(wxRegion(rect));
1980 }
1981
1982 void wxWindowDCImpl::DoSetDeviceClippingRegion( const wxRegion &region )
1983 {
1984 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
1985
1986 if (region.Empty())
1987 {
1988 DestroyClippingRegion();
1989 return;
1990 }
1991
1992 if (!m_gdkwindow) return;
1993
1994 if (!m_currentClippingRegion.IsNull())
1995 m_currentClippingRegion.Intersect( region );
1996 else
1997 m_currentClippingRegion.Union( region );
1998
1999 #if USE_PAINT_REGION
2000 if (!m_paintClippingRegion.IsNull())
2001 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2002 #endif
2003
2004 wxCoord xx, yy, ww, hh;
2005 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2006 wxGTKDCImpl::DoSetClippingRegion( xx, yy, ww, hh );
2007
2008 GdkRegion* gdkRegion = m_currentClippingRegion.GetRegion();
2009 gdk_gc_set_clip_region(m_penGC, gdkRegion);
2010 gdk_gc_set_clip_region(m_brushGC, gdkRegion);
2011 gdk_gc_set_clip_region(m_textGC, gdkRegion);
2012 gdk_gc_set_clip_region(m_bgGC, gdkRegion);
2013 }
2014
2015 void wxWindowDCImpl::DestroyClippingRegion()
2016 {
2017 wxCHECK_RET( IsOk(), wxT("invalid window dc") );
2018
2019 wxDCImpl::DestroyClippingRegion();
2020
2021 m_currentClippingRegion.Clear();
2022
2023 #if USE_PAINT_REGION
2024 if (!m_paintClippingRegion.IsEmpty())
2025 m_currentClippingRegion.Union( m_paintClippingRegion );
2026 #endif
2027
2028 if (!m_gdkwindow) return;
2029
2030 GdkRegion* gdkRegion = NULL;
2031 if (!m_currentClippingRegion.IsEmpty())
2032 gdkRegion = m_currentClippingRegion.GetRegion();
2033
2034 gdk_gc_set_clip_region(m_penGC, gdkRegion);
2035 gdk_gc_set_clip_region(m_brushGC, gdkRegion);
2036 gdk_gc_set_clip_region(m_textGC, gdkRegion);
2037 gdk_gc_set_clip_region(m_bgGC, gdkRegion);
2038 }
2039
2040 void wxWindowDCImpl::Destroy()
2041 {
2042 if (m_penGC) wxFreePoolGC( m_penGC );
2043 m_penGC = NULL;
2044 if (m_brushGC) wxFreePoolGC( m_brushGC );
2045 m_brushGC = NULL;
2046 if (m_textGC) wxFreePoolGC( m_textGC );
2047 m_textGC = NULL;
2048 if (m_bgGC) wxFreePoolGC( m_bgGC );
2049 m_bgGC = NULL;
2050 }
2051
2052 void wxWindowDCImpl::SetDeviceOrigin( wxCoord x, wxCoord y )
2053 {
2054 m_deviceOriginX = x;
2055 m_deviceOriginY = y;
2056
2057 ComputeScaleAndOrigin();
2058 }
2059
2060 void wxWindowDCImpl::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2061 {
2062 m_signX = (xLeftRight ? 1 : -1);
2063 m_signY = (yBottomUp ? -1 : 1);
2064
2065 if (m_window && m_window->m_wxwindow &&
2066 (m_window->GetLayoutDirection() == wxLayout_RightToLeft))
2067 m_signX = -m_signX;
2068
2069 ComputeScaleAndOrigin();
2070 }
2071
2072 void wxWindowDCImpl::ComputeScaleAndOrigin()
2073 {
2074 const wxRealPoint origScale(m_scaleX, m_scaleY);
2075
2076 wxDCImpl::ComputeScaleAndOrigin();
2077
2078 // if scale has changed call SetPen to recalulate the line width
2079 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.IsOk() )
2080 {
2081 // this is a bit artificial, but we need to force wxDC to think the pen
2082 // has changed
2083 wxPen pen = m_pen;
2084 m_pen = wxNullPen;
2085 SetPen( pen );
2086 }
2087 }
2088
2089 // Resolution in pixels per logical inch
2090 wxSize wxWindowDCImpl::GetPPI() const
2091 {
2092 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2093 }
2094
2095 int wxWindowDCImpl::GetDepth() const
2096 {
2097 return gdk_drawable_get_depth(m_gdkwindow);
2098 }
2099
2100 //-----------------------------------------------------------------------------
2101 // wxClientDCImpl
2102 //-----------------------------------------------------------------------------
2103
2104 IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl)
2105
2106 wxClientDCImpl::wxClientDCImpl( wxDC *owner )
2107 : wxWindowDCImpl( owner )
2108 {
2109 }
2110
2111 wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *win )
2112 : wxWindowDCImpl( owner, win )
2113 {
2114 wxCHECK_RET( win, wxT("NULL window in wxClientDCImpl::wxClientDC") );
2115
2116 #ifdef __WXUNIVERSAL__
2117 wxPoint ptOrigin = win->GetClientAreaOrigin();
2118 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2119 wxSize size = win->GetClientSize();
2120 DoSetClippingRegion(0, 0, size.x, size.y);
2121 #endif
2122 // __WXUNIVERSAL__
2123 }
2124
2125 void wxClientDCImpl::DoGetSize(int *width, int *height) const
2126 {
2127 wxCHECK_RET( m_window, wxT("GetSize() doesn't work without window") );
2128
2129 m_window->GetClientSize(width, height);
2130 }
2131
2132 //-----------------------------------------------------------------------------
2133 // wxPaintDCImpl
2134 //-----------------------------------------------------------------------------
2135
2136 IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxClientDCImpl)
2137
2138 // Limit the paint region to the window size. Sometimes
2139 // the paint region is too big, and this risks X11 errors
2140 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2141 {
2142 wxRect originalRect = region.GetBox();
2143 wxRect rect(originalRect);
2144 if (rect.width + rect.x > sz.x)
2145 rect.width = sz.x - rect.x;
2146 if (rect.height + rect.y > sz.y)
2147 rect.height = sz.y - rect.y;
2148 if (rect != originalRect)
2149 {
2150 region = wxRegion(rect);
2151 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2152 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2153 rect.x, rect.y, rect.width, rect.height);
2154 }
2155 }
2156
2157 wxPaintDCImpl::wxPaintDCImpl( wxDC *owner )
2158 : wxClientDCImpl( owner )
2159 {
2160 }
2161
2162 wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *win )
2163 : wxClientDCImpl( owner, win )
2164 {
2165 #if USE_PAINT_REGION
2166 if (!win->m_clipPaintRegion)
2167 return;
2168
2169 wxSize sz = win->GetSize();
2170 m_paintClippingRegion = win->m_nativeUpdateRegion;
2171 wxLimitRegionToSize(m_paintClippingRegion, sz);
2172
2173 GdkRegion *region = m_paintClippingRegion.GetRegion();
2174 if ( region )
2175 {
2176 m_currentClippingRegion.Union( m_paintClippingRegion );
2177 wxLimitRegionToSize(m_currentClippingRegion, sz);
2178
2179 if (sz.x <= 0 || sz.y <= 0)
2180 return ;
2181
2182 gdk_gc_set_clip_region( m_penGC, region );
2183 gdk_gc_set_clip_region( m_brushGC, region );
2184 gdk_gc_set_clip_region( m_textGC, region );
2185 gdk_gc_set_clip_region( m_bgGC, region );
2186 }
2187 #endif
2188 }
2189
2190 // ----------------------------------------------------------------------------
2191 // wxDCModule
2192 // ----------------------------------------------------------------------------
2193
2194 class wxDCModule : public wxModule
2195 {
2196 public:
2197 bool OnInit();
2198 void OnExit();
2199
2200 private:
2201 DECLARE_DYNAMIC_CLASS(wxDCModule)
2202 };
2203
2204 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2205
2206 bool wxDCModule::OnInit()
2207 {
2208 wxInitGCPool();
2209 return true;
2210 }
2211
2212 void wxDCModule::OnExit()
2213 {
2214 wxCleanUpGCPool();
2215
2216 for (int i = wxBRUSHSTYLE_LAST_HATCH - wxBRUSHSTYLE_FIRST_HATCH; i--; )
2217 {
2218 if (hatches[i])
2219 g_object_unref(hatches[i]);
2220 }
2221 }
wxWidgets (Impactor)