1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id: dcclient.cpp 53561 2008-05-11 20:17:30Z PC $
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)==wxCROSS_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
55 #define IS_16_PIX_HATCH(s) ((s)==wxBDIAGONAL_HATCH || (s)==wxCROSSDIAG_HATCH || (s)==wxFDIAGONAL_HATCH)
56
57
58 static GdkPixmap *hatches[num_hatches];
59 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
60
61 extern GtkWidget *wxGetRootWindow();
62
63 //-----------------------------------------------------------------------------
64 // constants
65 //-----------------------------------------------------------------------------
66
67 const double RAD2DEG = 180.0 / M_PI;
68
69 // ----------------------------------------------------------------------------
70 // private functions
71 // ----------------------------------------------------------------------------
72
dmax(double a,double b)73 static inline double dmax(double a, double b) { return a > b ? a : b; }
dmin(double a,double b)74 static inline double dmin(double a, double b) { return a < b ? a : b; }
75
DegToRad(double deg)76 static 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
84 static
gdk_wx_draw_bitmap(GdkDrawable * drawable,GdkGC * gc,GdkDrawable * src,gint xsrc,gint ysrc,gint xdest,gint ydest,gint width,gint height)85 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
86 GdkGC *gc,
87 GdkDrawable *src,
88 gint xsrc,
89 gint ysrc,
90 gint xdest,
91 gint ydest,
92 gint width,
93 gint height)
94 {
95 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
118 enum 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
135 struct wxGC
136 {
137 GdkGC *m_gc;
138 wxPoolGCType m_type;
139 bool m_used;
140 };
141
142 #define GC_POOL_ALLOC_SIZE 100
143
144 static int wxGCPoolSize = 0;
145
146 static wxGC *wxGCPool = NULL;
147
wxInitGCPool()148 static 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
wxCleanUpGCPool()173 static 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
wxGetPoolGC(GdkWindow * window,wxPoolGCType type)186 static 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
wxFreePoolGC(GdkGC * gc)237 static 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
IMPLEMENT_DYNAMIC_CLASS(wxWindowDC,wxDC)255 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
256
257 wxWindowDC::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
wxWindowDC(wxWindow * window)272 wxWindowDC::wxWindowDC( wxWindow *window )
273 {
274 wxCHECK_RET( 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
~wxWindowDC()338 wxWindowDC::~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
SetUpDC()348 void 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 gdk_gc_set_colormap( m_textGC, m_cmap );
396
397 /* m_penGC */
398 m_pen.GetColour().CalcPixel( m_cmap );
399 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
400 gdk_gc_set_background( m_penGC, bg_col );
401
402 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
403
404 /* m_brushGC */
405 m_brush.GetColour().CalcPixel( m_cmap );
406 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
407 gdk_gc_set_background( m_brushGC, bg_col );
408
409 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
410
411 /* m_bgGC */
412 gdk_gc_set_background( m_bgGC, bg_col );
413 gdk_gc_set_foreground( m_bgGC, bg_col );
414
415 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
416
417 /* ROPs */
418 gdk_gc_set_function( m_textGC, GDK_COPY );
419 gdk_gc_set_function( m_brushGC, GDK_COPY );
420 gdk_gc_set_function( m_penGC, GDK_COPY );
421
422 /* clipping */
423 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
424 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
425 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
426 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
427
428 if (!hatch_bitmap)
429 {
430 hatch_bitmap = hatches;
431 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
432 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
433 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
434 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
435 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
436 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
437 }
438 }
439
DoGetSize(int * width,int * height) const440 void wxWindowDC::DoGetSize( int* width, int* height ) const
441 {
442 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
443
444 m_owner->GetSize(width, height);
445 }
446
447 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
448 const wxColour & col, int style);
449
DoFloodFill(wxCoord x,wxCoord y,const wxColour & col,int style)450 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
451 const wxColour& col, int style)
452 {
453 return wxDoFloodFill(this, x, y, col, style);
454 }
455
DoGetPixel(wxCoord x1,wxCoord y1,wxColour * col) const456 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
457 {
458 // Generic (and therefore rather inefficient) method.
459 // Could be improved.
460 wxMemoryDC memdc;
461 wxBitmap bitmap(1, 1);
462 memdc.SelectObject(bitmap);
463 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
464 memdc.SelectObject(wxNullBitmap);
465
466 wxImage image = bitmap.ConvertToImage();
467 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
468 return true;
469 }
470
DoDrawLine(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2)471 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
472 {
473 wxCHECK_RET( Ok(), wxT("invalid window dc") );
474
475 if (m_pen.GetStyle() != wxTRANSPARENT)
476 {
477 if (m_window)
478 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
479
480 CalcBoundingBox(x1, y1);
481 CalcBoundingBox(x2, y2);
482 }
483 }
484
DoCrossHair(wxCoord x,wxCoord y)485 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
486 {
487 wxCHECK_RET( Ok(), wxT("invalid window dc") );
488
489 if (m_pen.GetStyle() != wxTRANSPARENT)
490 {
491 int w = 0;
492 int h = 0;
493 GetSize( &w, &h );
494 wxCoord xx = XLOG2DEV(x);
495 wxCoord yy = YLOG2DEV(y);
496 if (m_window)
497 {
498 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
499 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
500 }
501 }
502 }
503
DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2,wxCoord xc,wxCoord yc)504 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
505 wxCoord xc, wxCoord yc )
506 {
507 wxCHECK_RET( Ok(), wxT("invalid window dc") );
508
509 wxCoord xx1 = XLOG2DEV(x1);
510 wxCoord yy1 = YLOG2DEV(y1);
511 wxCoord xx2 = XLOG2DEV(x2);
512 wxCoord yy2 = YLOG2DEV(y2);
513 wxCoord xxc = XLOG2DEV(xc);
514 wxCoord yyc = YLOG2DEV(yc);
515 double dx = xx1 - xxc;
516 double dy = yy1 - yyc;
517 double radius = sqrt((double)(dx*dx+dy*dy));
518 wxCoord r = (wxCoord)radius;
519 double radius1, radius2;
520
521 if (xx1 == xx2 && yy1 == yy2)
522 {
523 radius1 = 0.0;
524 radius2 = 360.0;
525 }
526 else if ( wxIsNullDouble(radius) )
527 {
528 radius1 =
529 radius2 = 0.0;
530 }
531 else
532 {
533 radius1 = (xx1 - xxc == 0) ?
534 (yy1 - yyc < 0) ? 90.0 : -90.0 :
535 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
536 radius2 = (xx2 - xxc == 0) ?
537 (yy2 - yyc < 0) ? 90.0 : -90.0 :
538 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
539 }
540 wxCoord alpha1 = wxCoord(radius1 * 64.0);
541 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
542 while (alpha2 <= 0) alpha2 += 360*64;
543 while (alpha1 > 360*64) alpha1 -= 360*64;
544
545 if (m_window)
546 {
547 if (m_brush.GetStyle() != wxTRANSPARENT)
548 {
549 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
550 {
551 gdk_gc_set_ts_origin( m_textGC,
552 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
553 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
554 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
555 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
556 } else
557 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
558 {
559 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
560 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
561 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
562 } else
563 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
564 {
565 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
566 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
567 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
568 } else
569 if (m_brush.GetStyle() == wxSTIPPLE)
570 {
571 gdk_gc_set_ts_origin( m_brushGC,
572 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
573 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
574 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
575 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
576 }
577 else
578 {
579 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
580 }
581 }
582
583 if (m_pen.GetStyle() != wxTRANSPARENT)
584 {
585 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
586
587 if ((m_brush.GetStyle() != wxTRANSPARENT) && (alpha2 - alpha1 != 360*64))
588 {
589 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
590 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
591 }
592 }
593 }
594
595 CalcBoundingBox (x1, y1);
596 CalcBoundingBox (x2, y2);
597 }
598
DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord width,wxCoord height,double sa,double ea)599 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
600 {
601 wxCHECK_RET( Ok(), wxT("invalid window dc") );
602
603 wxCoord xx = XLOG2DEV(x);
604 wxCoord yy = YLOG2DEV(y);
605 wxCoord ww = m_signX * XLOG2DEVREL(width);
606 wxCoord hh = m_signY * YLOG2DEVREL(height);
607
608 // CMB: handle -ve width and/or height
609 if (ww < 0) { ww = -ww; xx = xx - ww; }
610 if (hh < 0) { hh = -hh; yy = yy - hh; }
611
612 if (m_window)
613 {
614 wxCoord start = wxCoord(sa * 64.0);
615 wxCoord end = wxCoord((ea-sa) * 64.0);
616
617 if (m_brush.GetStyle() != wxTRANSPARENT)
618 {
619 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
620 {
621 gdk_gc_set_ts_origin( m_textGC,
622 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
623 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
624 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
625 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
626 } else
627 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
628 {
629 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
630 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
631 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
632 } else
633 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
634 {
635 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
636 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
637 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
638 } else
639 if (m_brush.GetStyle() == wxSTIPPLE)
640 {
641 gdk_gc_set_ts_origin( m_brushGC,
642 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
643 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
644 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
645 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
646 }
647 else
648 {
649 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
650 }
651 }
652
653 if (m_pen.GetStyle() != wxTRANSPARENT)
654 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
655 }
656
657 CalcBoundingBox (x, y);
658 CalcBoundingBox (x + width, y + height);
659 }
660
DoDrawPoint(wxCoord x,wxCoord y)661 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
662 {
663 wxCHECK_RET( Ok(), wxT("invalid window dc") );
664
665 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
666 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
667
668 CalcBoundingBox (x, y);
669 }
670
DoDrawLines(int n,wxPoint points[],wxCoord xoffset,wxCoord yoffset)671 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
672 {
673 wxCHECK_RET( Ok(), wxT("invalid window dc") );
674
675 if (m_pen.GetStyle() == wxTRANSPARENT) return;
676 if (n <= 0) return;
677
678 //Check, if scaling is necessary
679 const bool doScale =
680 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
681
682 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
683 GdkPoint* gpts = reinterpret_cast<GdkPoint*>(points);
684
685 if (doScale)
686 gpts = new GdkPoint[n];
687
688 for (int i = 0; i < n; i++)
689 {
690 if (doScale)
691 {
692 gpts[i].x = XLOG2DEV(points[i].x + xoffset);
693 gpts[i].y = YLOG2DEV(points[i].y + yoffset);
694 }
695 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
696 }
697
698 if (m_window)
699 gdk_draw_lines( m_window, m_penGC, gpts, n);
700
701 if (doScale)
702 delete[] gpts;
703 }
704
DoDrawPolygon(int n,wxPoint points[],wxCoord xoffset,wxCoord yoffset,int WXUNUSED (fillStyle))705 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
706 {
707 wxCHECK_RET( Ok(), wxT("invalid window dc") );
708
709 if (n <= 0) return;
710
711 //Check, if scaling is necessary
712 const bool doScale =
713 xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10;
714
715 // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other
716 GdkPoint* gdkpoints = reinterpret_cast<GdkPoint*>(points);
717
718 if (doScale)
719 gdkpoints = new GdkPoint[n];
720
721 int i;
722 for (i = 0 ; i < n ; i++)
723 {
724 if (doScale)
725 {
726 gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset);
727 gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset);
728 }
729 CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset);
730 }
731
732 if (m_window)
733 {
734 if (m_brush.GetStyle() != wxTRANSPARENT)
735 {
736 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
737 {
738 gdk_gc_set_ts_origin( m_textGC,
739 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
740 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
741 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
742 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
743 } else
744 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
745 {
746 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
747 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
748 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
749 } else
750 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
751 {
752 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
753 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
754 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
755 } else
756 if (m_brush.GetStyle() == wxSTIPPLE)
757 {
758 gdk_gc_set_ts_origin( m_brushGC,
759 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
760 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
761 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
762 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
763 }
764 else
765 {
766 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
767 }
768 }
769
770 if (m_pen.GetStyle() != wxTRANSPARENT)
771 {
772 /*
773 for (i = 0 ; i < n ; i++)
774 {
775 gdk_draw_line( m_window, m_penGC,
776 gdkpoints[i%n].x,
777 gdkpoints[i%n].y,
778 gdkpoints[(i+1)%n].x,
779 gdkpoints[(i+1)%n].y);
780 }
781 */
782 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
783
784 }
785 }
786
787 if (doScale)
788 delete[] gdkpoints;
789 }
790
DoDrawRectangle(wxCoord x,wxCoord y,wxCoord width,wxCoord height)791 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
792 {
793 wxCHECK_RET( Ok(), wxT("invalid window dc") );
794
795 wxCoord xx = XLOG2DEV(x);
796 wxCoord yy = YLOG2DEV(y);
797 wxCoord ww = m_signX * XLOG2DEVREL(width);
798 wxCoord hh = m_signY * YLOG2DEVREL(height);
799
800 // CMB: draw nothing if transformed w or h is 0
801 if (ww == 0 || hh == 0) return;
802
803 // CMB: handle -ve width and/or height
804 if (ww < 0) { ww = -ww; xx = xx - ww; }
805 if (hh < 0) { hh = -hh; yy = yy - hh; }
806
807 if (m_window)
808 {
809 if (m_brush.GetStyle() != wxTRANSPARENT)
810 {
811 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
812 {
813 gdk_gc_set_ts_origin( m_textGC,
814 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
815 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
816 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
817 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
818 } else
819 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
820 {
821 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
822 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
823 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
824 } else
825 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
826 {
827 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
828 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
829 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
830 } else
831 if (m_brush.GetStyle() == wxSTIPPLE)
832 {
833 gdk_gc_set_ts_origin( m_brushGC,
834 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
835 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
836 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
837 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
838 }
839 else
840 {
841 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
842 }
843 }
844
845 if (m_pen.GetStyle() != wxTRANSPARENT)
846 {
847 #if 1
848 if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
849 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxSOLID))
850 {
851 // Use 2 1-line rects instead
852 gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
853
854 if (m_signX == -1)
855 {
856 // Different for RTL
857 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 );
858 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy-1, ww, hh );
859 }
860 else
861 {
862 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-2, hh-2 );
863 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx-1, yy-1, ww, hh );
864 }
865
866 // reset
867 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
868 }
869 else
870 #endif
871 {
872 // Just use X11 for other cases
873 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
874 }
875 }
876 }
877
878 CalcBoundingBox( x, y );
879 CalcBoundingBox( x + width, y + height );
880 }
881
DoDrawRoundedRectangle(wxCoord x,wxCoord y,wxCoord width,wxCoord height,double radius)882 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
883 {
884 wxCHECK_RET( Ok(), wxT("invalid window dc") );
885
886 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
887
888 wxCoord xx = XLOG2DEV(x);
889 wxCoord yy = YLOG2DEV(y);
890 wxCoord ww = m_signX * XLOG2DEVREL(width);
891 wxCoord hh = m_signY * YLOG2DEVREL(height);
892 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
893
894 // CMB: handle -ve width and/or height
895 if (ww < 0) { ww = -ww; xx = xx - ww; }
896 if (hh < 0) { hh = -hh; yy = yy - hh; }
897
898 // CMB: if radius is zero use DrawRectangle() instead to avoid
899 // X drawing errors with small radii
900 if (rr == 0)
901 {
902 DrawRectangle( x, y, width, height );
903 return;
904 }
905
906 // CMB: draw nothing if transformed w or h is 0
907 if (ww == 0 || hh == 0) return;
908
909 // CMB: adjust size if outline is drawn otherwise the result is
910 // 1 pixel too wide and high
911 if (m_pen.GetStyle() != wxTRANSPARENT)
912 {
913 ww--;
914 hh--;
915 }
916
917 if (m_window)
918 {
919 // CMB: ensure dd is not larger than rectangle otherwise we
920 // get an hour glass shape
921 wxCoord dd = 2 * rr;
922 if (dd > ww) dd = ww;
923 if (dd > hh) dd = hh;
924 rr = dd / 2;
925
926 if (m_brush.GetStyle() != wxTRANSPARENT)
927 {
928 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
929 {
930 gdk_gc_set_ts_origin( m_textGC,
931 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
932 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
933 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
934 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
935 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
936 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
937 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
938 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
939 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
940 } else
941 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
942 {
943 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
944 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
945 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
947 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
948 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
949 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
950 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
951 } else
952 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
953 {
954 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
955 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
956 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
959 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
960 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
961 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
962 } else
963 if (m_brush.GetStyle() == wxSTIPPLE)
964 {
965 gdk_gc_set_ts_origin( m_brushGC,
966 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
967 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
968 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
969 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
970 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
971 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
972 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
973 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
974 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
975 }
976 else
977 {
978 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
979 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
980 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
981 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
982 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
983 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
984 }
985 }
986
987 if (m_pen.GetStyle() != wxTRANSPARENT)
988 {
989 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
990 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
991 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
992 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
993 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
994 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
995 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
996 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
997 }
998 }
999
1000 // this ignores the radius
1001 CalcBoundingBox( x, y );
1002 CalcBoundingBox( x + width, y + height );
1003 }
1004
DoDrawEllipse(wxCoord x,wxCoord y,wxCoord width,wxCoord height)1005 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
1006 {
1007 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1008
1009 wxCoord xx = XLOG2DEV(x);
1010 wxCoord yy = YLOG2DEV(y);
1011 wxCoord ww = m_signX * XLOG2DEVREL(width);
1012 wxCoord hh = m_signY * YLOG2DEVREL(height);
1013
1014 // CMB: handle -ve width and/or height
1015 if (ww < 0) { ww = -ww; xx = xx - ww; }
1016 if (hh < 0) { hh = -hh; yy = yy - hh; }
1017
1018 if (m_window)
1019 {
1020 if (m_brush.GetStyle() != wxTRANSPARENT)
1021 {
1022 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1023 {
1024 gdk_gc_set_ts_origin( m_textGC,
1025 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1026 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1027 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1028 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1029 } else
1030 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1031 {
1032 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1033 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1034 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1035 } else
1036 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1037 {
1038 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1039 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1040 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1041 } else
1042 if (m_brush.GetStyle() == wxSTIPPLE)
1043 {
1044 gdk_gc_set_ts_origin( m_brushGC,
1045 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1046 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1047 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1048 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1049 }
1050 else
1051 {
1052 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1053 }
1054 }
1055
1056 if (m_pen.GetStyle() != wxTRANSPARENT)
1057 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1058 }
1059
1060 CalcBoundingBox( x, y );
1061 CalcBoundingBox( x + width, y + height );
1062 }
1063
DoDrawIcon(const wxIcon & icon,wxCoord x,wxCoord y)1064 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1065 {
1066 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1067 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1068 }
1069
DoDrawBitmap(const wxBitmap & bitmap,wxCoord x,wxCoord y,bool useMask)1070 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1071 wxCoord x, wxCoord y,
1072 bool useMask )
1073 {
1074 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1075
1076 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1077
1078 bool is_mono = bitmap.GetDepth() == 1;
1079
1080 // scale/translate size and position
1081 int xx = XLOG2DEV(x);
1082 int yy = YLOG2DEV(y);
1083
1084 int w = bitmap.GetWidth();
1085 int h = bitmap.GetHeight();
1086
1087 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1088 xx -= w;
1089
1090 CalcBoundingBox( x, y );
1091 CalcBoundingBox( x + w, y + h );
1092
1093 if (!m_window) return;
1094
1095 int ww = XLOG2DEVREL(w);
1096 int hh = YLOG2DEVREL(h);
1097
1098 // compare to current clipping region
1099 if (!m_currentClippingRegion.IsNull())
1100 {
1101 wxRegion tmp( xx,yy,ww,hh );
1102 tmp.Intersect( m_currentClippingRegion );
1103 if (tmp.IsEmpty())
1104 return;
1105 }
1106
1107 // scale bitmap if required
1108 wxBitmap use_bitmap = bitmap;
1109 if ((w != ww) || (h != hh))
1110 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1111
1112 #if !GTK_CHECK_VERSION(2,2,0)
1113 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1114 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1115 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1116 // and also creates the mask as a side-effect:
1117 use_bitmap.GetPixmap();
1118 #endif
1119
1120 // apply mask if any
1121 GdkBitmap *mask = (GdkBitmap *) NULL;
1122 if (useMask && use_bitmap.GetMask())
1123 mask = use_bitmap.GetMask()->GetBitmap();
1124
1125 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1126
1127 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1128
1129 if (mask != NULL)
1130 {
1131 if (!m_currentClippingRegion.IsNull())
1132 {
1133 GdkColor col;
1134 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1135 GdkGC *gc = gdk_gc_new( new_mask );
1136 col.pixel = 0;
1137 gdk_gc_set_foreground( gc, &col );
1138 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1139 col.pixel = 0;
1140 gdk_gc_set_background( gc, &col );
1141 col.pixel = 1;
1142 gdk_gc_set_foreground( gc, &col );
1143 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1144 gdk_gc_set_clip_origin( gc, -xx, -yy );
1145 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1146 gdk_gc_set_stipple( gc, mask );
1147 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1148 mask = new_mask;
1149 g_object_unref (gc);
1150 }
1151
1152 gdk_gc_set_clip_mask(use_gc, mask);
1153 gdk_gc_set_clip_origin(use_gc, xx, yy);
1154 }
1155
1156 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1157 // drawing a mono-bitmap (XBitmap) we use the current text GC
1158 if (is_mono)
1159 {
1160 GdkPixmap *bitmap2 = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, -1 );
1161 GdkGC *gc = gdk_gc_new( bitmap2 );
1162 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1163 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1164 gdk_wx_draw_bitmap( bitmap2, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1165
1166 gdk_draw_drawable(m_window, use_gc, bitmap2, 0, 0, xx, yy, -1, -1);
1167
1168 g_object_unref (bitmap2);
1169 g_object_unref (gc);
1170 }
1171 else
1172 {
1173 #if GTK_CHECK_VERSION(2,2,0)
1174 if (!gtk_check_version(2,2,0) && use_bitmap.HasPixbuf())
1175 {
1176 gdk_draw_pixbuf(m_window, use_gc,
1177 use_bitmap.GetPixbuf(),
1178 0, 0, xx, yy, -1, -1,
1179 GDK_RGB_DITHER_NORMAL, xx, yy);
1180 }
1181 else
1182 #endif
1183 {
1184 gdk_draw_drawable(m_window, use_gc,
1185 use_bitmap.GetPixmap(),
1186 0, 0, xx, yy, -1, -1);
1187 }
1188 }
1189
1190 // remove mask again if any
1191 if (mask != NULL)
1192 {
1193 gdk_gc_set_clip_mask(use_gc, NULL);
1194 gdk_gc_set_clip_origin(use_gc, 0, 0);
1195 if (!m_currentClippingRegion.IsNull())
1196 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1197 if (new_mask != NULL)
1198 g_object_unref(new_mask);
1199 }
1200 }
1201
DoBlit(wxCoord xdest,wxCoord ydest,wxCoord width,wxCoord height,wxDC * source,wxCoord xsrc,wxCoord ysrc,int logical_func,bool useMask,wxCoord xsrcMask,wxCoord ysrcMask)1202 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1203 wxCoord width, wxCoord height,
1204 wxDC *source,
1205 wxCoord xsrc, wxCoord ysrc,
1206 int logical_func,
1207 bool useMask,
1208 wxCoord xsrcMask, wxCoord ysrcMask )
1209 {
1210 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1211
1212 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1213
1214 if (!m_window) return false;
1215
1216 // transform the source DC coords to the device ones
1217 xsrc = source->LogicalToDeviceX(xsrc);
1218 ysrc = source->LogicalToDeviceY(ysrc);
1219
1220 wxMemoryDC *memDC = wxDynamicCast(source, wxMemoryDC);
1221 wxBitmap selected = source->GetSelectedBitmap();
1222
1223 bool use_bitmap_method = false;
1224 bool is_mono = false;
1225
1226 if (xsrcMask == -1 && ysrcMask == -1)
1227 {
1228 xsrcMask = xsrc;
1229 ysrcMask = ysrc;
1230 }
1231
1232 if (memDC && !selected.Ok()) return false;
1233
1234 if (selected.Ok())
1235 {
1236 is_mono = (selected.GetDepth() == 1);
1237
1238 // we use the "XCopyArea" way to copy a memory dc into
1239 // a different window if the memory dc BOTH
1240 // a) doesn't have any mask or its mask isn't used
1241 // b) it is clipped
1242 // c) is not 1-bit
1243
1244 if (useMask && (selected.GetMask()))
1245 {
1246 // we HAVE TO use the direct way for memory dcs
1247 // that have mask since the XCopyArea doesn't know
1248 // about masks
1249 use_bitmap_method = true;
1250 }
1251 else if (is_mono)
1252 {
1253 // we HAVE TO use the direct way for memory dcs
1254 // that are bitmaps because XCopyArea doesn't cope
1255 // with different bit depths
1256 use_bitmap_method = true;
1257 }
1258 else if ((xsrc == 0) && (ysrc == 0) &&
1259 (width == selected.GetWidth()) &&
1260 (height == selected.GetHeight()))
1261 {
1262 // we SHOULD use the direct way if all of the bitmap
1263 // in the memory dc is copied in which case XCopyArea
1264 // wouldn't be able able to boost performace by reducing
1265 // the area to be scaled
1266 use_bitmap_method = true;
1267 }
1268 }
1269
1270 CalcBoundingBox( xdest, ydest );
1271 CalcBoundingBox( xdest + width, ydest + height );
1272
1273 // scale/translate size and position
1274 wxCoord xx = XLOG2DEV(xdest);
1275 wxCoord yy = YLOG2DEV(ydest);
1276
1277 wxCoord ww = XLOG2DEVREL(width);
1278 wxCoord hh = YLOG2DEVREL(height);
1279
1280 // compare to current clipping region
1281 if (!m_currentClippingRegion.IsNull())
1282 {
1283 wxRegion tmp( xx,yy,ww,hh );
1284 tmp.Intersect( m_currentClippingRegion );
1285 if (tmp.IsEmpty())
1286 return true;
1287 }
1288
1289 int old_logical_func = m_logicalFunction;
1290 SetLogicalFunction( logical_func );
1291
1292 if (use_bitmap_method)
1293 {
1294 // scale/translate bitmap size
1295 wxCoord bm_width = selected.GetWidth();
1296 wxCoord bm_height = selected.GetHeight();
1297
1298 // Get clip coords for the bitmap. If we don't
1299 // use wxBitmap::Rescale(), which can clip the
1300 // bitmap, these are the same as the original
1301 // coordinates
1302 wxCoord cx = xx;
1303 wxCoord cy = yy;
1304 wxCoord cw = ww;
1305 wxCoord ch = hh;
1306
1307 // interpret userscale of src too
1308 double xsc,ysc;
1309 memDC->GetUserScale(&xsc,&ysc);
1310 bm_width = (int) (bm_width / xsc);
1311 bm_height = (int) (bm_height / ysc);
1312
1313 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1314 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1315
1316 // Scale bitmap if required
1317 wxBitmap use_bitmap = selected;
1318 if ((selected.GetWidth()!= bm_ww) || ( selected.GetHeight()!= bm_hh))
1319 {
1320 // This indicates that the blitting code below will get
1321 // a clipped bitmap and therefore needs to move the origin
1322 // accordingly
1323 wxRegion tmp( xx,yy,ww,hh );
1324 if (!m_currentClippingRegion.IsNull())
1325 tmp.Intersect( m_currentClippingRegion );
1326 tmp.GetBox(cx,cy,cw,ch);
1327
1328 // Scale and clipped bitmap
1329 use_bitmap = selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1330 }
1331
1332 // apply mask if any
1333 GdkBitmap *mask = (GdkBitmap *) NULL;
1334 if (useMask && use_bitmap.GetMask())
1335 mask = use_bitmap.GetMask()->GetBitmap();
1336
1337 GdkGC* use_gc = is_mono ? m_textGC : m_penGC;
1338
1339 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1340
1341 if (mask != NULL)
1342 {
1343 if (!m_currentClippingRegion.IsNull())
1344 {
1345 GdkColor col;
1346 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1347 GdkGC *gc = gdk_gc_new( new_mask );
1348 col.pixel = 0;
1349 gdk_gc_set_foreground( gc, &col );
1350 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1351 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1352 col.pixel = 0;
1353 gdk_gc_set_background( gc, &col );
1354 col.pixel = 1;
1355 gdk_gc_set_foreground( gc, &col );
1356 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1357 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1358 gdk_gc_set_clip_origin( gc, -cx, -cy );
1359 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1360 gdk_gc_set_stipple( gc, mask );
1361 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1362 mask = new_mask;
1363 g_object_unref (gc);
1364 }
1365
1366 gdk_gc_set_clip_mask(use_gc, mask);
1367 if (new_mask != NULL)
1368 gdk_gc_set_clip_origin(use_gc, cx, cy);
1369 else
1370 gdk_gc_set_clip_origin(use_gc, cx - xsrcMask, cy - ysrcMask);
1371 }
1372
1373 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1374 // drawing a mono-bitmap (XBitmap) we use the current text GC
1375
1376 if (is_mono)
1377 {
1378 GdkPixmap *bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, -1 );
1379 GdkGC *gc = gdk_gc_new( bitmap );
1380 gdk_gc_set_foreground( gc, m_textForegroundColour.GetColor() );
1381 gdk_gc_set_background( gc, m_textBackgroundColour.GetColor() );
1382 gdk_wx_draw_bitmap( bitmap, gc, use_bitmap.GetPixmap(), 0, 0, 0, 0, -1, -1 );
1383
1384 gdk_draw_drawable(m_window, use_gc, bitmap, xsrc, ysrc, cx, cy, cw, ch);
1385
1386 g_object_unref (bitmap);
1387 g_object_unref (gc);
1388 }
1389 else
1390 {
1391 // was: gdk_draw_drawable( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1392 gdk_draw_drawable(m_window, use_gc, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch);
1393 }
1394
1395 // remove mask again if any
1396 if (mask != NULL)
1397 {
1398 gdk_gc_set_clip_mask(use_gc, NULL);
1399 gdk_gc_set_clip_origin(use_gc, 0, 0);
1400 if (!m_currentClippingRegion.IsNull())
1401 gdk_gc_set_clip_region(use_gc, m_currentClippingRegion.GetRegion());
1402 }
1403
1404 if (new_mask)
1405 g_object_unref (new_mask);
1406 }
1407 else // use_bitmap_method
1408 {
1409 if (selected.Ok() && ((width != ww) || (height != hh)))
1410 {
1411 // get clip coords
1412 wxRegion tmp( xx,yy,ww,hh );
1413 tmp.Intersect( m_currentClippingRegion );
1414 wxCoord cx,cy,cw,ch;
1415 tmp.GetBox(cx,cy,cw,ch);
1416
1417 // rescale bitmap
1418 wxBitmap bitmap = selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1419
1420 // draw scaled bitmap
1421 // was: gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1422 gdk_draw_drawable( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1423 }
1424 else
1425 {
1426 // No scaling and not a memory dc with a mask either
1427
1428 GdkWindow* window = source->GetGDKWindow();
1429 if ( !window )
1430 return false;
1431
1432 // copy including child window contents
1433 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1434 gdk_draw_drawable( m_window, m_penGC,
1435 window,
1436 xsrc, ysrc, xx, yy,
1437 width, height );
1438 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1439 }
1440 }
1441
1442 SetLogicalFunction( old_logical_func );
1443
1444 return true;
1445 }
1446
DoDrawText(const wxString & text,wxCoord x,wxCoord y)1447 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1448 {
1449 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1450
1451 if (!m_window) return;
1452
1453 if (text.empty()) return;
1454
1455 x = XLOG2DEV(x);
1456 y = YLOG2DEV(y);
1457
1458 wxCHECK_RET( m_context, wxT("no Pango context") );
1459 wxCHECK_RET( m_layout, wxT("no Pango layout") );
1460 wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
1461
1462 gdk_pango_context_set_colormap( m_context, m_cmap );
1463
1464 bool underlined = m_font.Ok() && m_font.GetUnderlined();
1465
1466 const wxCharBuffer data = wxGTK_CONV( text );
1467 if ( !data )
1468 return;
1469 size_t datalen = strlen(data);
1470
1471 // TODO: as soon as Pango provides a function to check at runtime its
1472 // version, we can use it to disable the underline hack for
1473 // Pango >= 1.16 as the "underline of leading/trailing spaces"
1474 // has been fixed there
1475 bool needshack = underlined;
1476 char *hackstring = NULL;
1477
1478 if (needshack)
1479 {
1480 // a PangoLayout which has leading/trailing spaces with underlined font
1481 // is not correctly drawn by this pango version: Pango won't underline the spaces.
1482 // This can be a problem; e.g. wxHTML rendering of underlined text relies on
1483 // this behaviour. To workaround this problem, we use a special hack here
1484 // suggested by pango maintainer Behdad Esfahbod: we prepend and append two
1485 // empty space characters and give them a dummy colour attribute.
1486 // This will force Pango to underline the leading/trailing spaces, too.
1487
1488 // need to realloc the string to prepend & append our special characters
1489 hackstring = (char*)malloc((datalen+7)*sizeof(char));
1490
1491 // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1492 strcpy(hackstring, "\342\200\214");
1493
1494 // copy the user string
1495 memcpy(&hackstring[3], data, datalen);
1496
1497 // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
1498 strcpy(&hackstring[datalen+3], "\342\200\214");
1499
1500 // the special characters that we added require 6 additional bytes:
1501 datalen += 6;
1502
1503 pango_layout_set_text(m_layout, hackstring, datalen);
1504 }
1505 else
1506 {
1507 pango_layout_set_text(m_layout, data, datalen);
1508 }
1509
1510 if (underlined)
1511 {
1512 PangoAttrList *attrs = pango_attr_list_new();
1513 PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
1514 a->start_index = 0;
1515 a->end_index = datalen;
1516 pango_attr_list_insert(attrs, a);
1517
1518 if (needshack)
1519 {
1520 // dummy colour for the leading space
1521 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1522 a->start_index = 0;
1523 a->end_index = 1;
1524 pango_attr_list_insert(attrs, a);
1525
1526 // dummy colour for the trailing space
1527 a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614);
1528 a->start_index = datalen - 1;
1529 a->end_index = datalen;
1530 pango_attr_list_insert(attrs, a);
1531 }
1532
1533 pango_layout_set_attributes(m_layout, attrs);
1534 pango_attr_list_unref(attrs);
1535 }
1536
1537 int w,h;
1538
1539 if (fabs(m_scaleY - 1.0) > 0.00001)
1540 {
1541 // If there is a user or actually any scale applied to
1542 // the device context, scale the font.
1543
1544 // scale font description
1545 gint oldSize = pango_font_description_get_size( m_fontdesc );
1546 double size = oldSize;
1547 size = size * m_scaleY;
1548 pango_font_description_set_size( m_fontdesc, (gint)size );
1549
1550 // actually apply scaled font
1551 pango_layout_set_font_description( m_layout, m_fontdesc );
1552
1553 pango_layout_get_pixel_size( m_layout, &w, &h );
1554 if ( m_backgroundMode == wxSOLID )
1555 {
1556 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1557 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1558 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1559 }
1560
1561 // Draw layout.
1562 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1563 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1564 else
1565 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1566
1567 // reset unscaled size
1568 pango_font_description_set_size( m_fontdesc, oldSize );
1569
1570 // actually apply unscaled font
1571 pango_layout_set_font_description( m_layout, m_fontdesc );
1572 }
1573 else
1574 {
1575 pango_layout_get_pixel_size( m_layout, &w, &h );
1576 if ( m_backgroundMode == wxSOLID )
1577 {
1578 gdk_gc_set_foreground(m_textGC, m_textBackgroundColour.GetColor());
1579 gdk_draw_rectangle(m_window, m_textGC, TRUE, x, y, w, h);
1580 gdk_gc_set_foreground(m_textGC, m_textForegroundColour.GetColor());
1581 }
1582
1583 // Draw layout.
1584 if (m_owner && m_owner->GetLayoutDirection() == wxLayout_RightToLeft)
1585 gdk_draw_layout( m_window, m_textGC, x-w, y, m_layout );
1586 else
1587 gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
1588 }
1589
1590 if (underlined)
1591 {
1592 // undo underline attributes setting:
1593 pango_layout_set_attributes(m_layout, NULL);
1594 }
1595
1596 wxCoord width = w;
1597 wxCoord height = h;
1598
1599 width = wxCoord(width / m_scaleX);
1600 height = wxCoord(height / m_scaleY);
1601 CalcBoundingBox (x + width, y + height);
1602 CalcBoundingBox (x, y);
1603
1604 if (hackstring)
1605 free(hackstring);
1606 }
1607
1608
1609 // TODO: There is an example of rotating text with GTK2 that would probably be
1610 // a better approach here:
1611 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1612
DoDrawRotatedText(const wxString & text,wxCoord x,wxCoord y,double angle)1613 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1614 {
1615 if (!m_window || text.empty())
1616 return;
1617
1618 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1619
1620 if ( wxIsNullDouble(angle) )
1621 {
1622 DrawText(text, x, y);
1623 return;
1624 }
1625
1626 wxCoord w;
1627 wxCoord h;
1628
1629 // TODO: implement later without GdkFont for GTK 2.0
1630 GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
1631
1632 // draw the string normally
1633 wxBitmap src(w, h);
1634 wxMemoryDC dc;
1635 dc.SelectObject(src);
1636 dc.SetFont(GetFont());
1637 dc.SetBackground(*wxBLACK_BRUSH);
1638 dc.SetBrush(*wxBLACK_BRUSH);
1639 dc.Clear();
1640 dc.SetTextForeground( *wxWHITE );
1641 dc.DrawText(text, 0, 0);
1642 dc.SelectObject(wxNullBitmap);
1643
1644 // Calculate the size of the rotated bounding box.
1645 double rad = DegToRad(angle);
1646 double dx = cos(rad),
1647 dy = sin(rad);
1648
1649 // the rectngle vertices are counted clockwise with the first one being at
1650 // (0, 0) (or, rather, at (x, y))
1651 double x2 = w*dx,
1652 y2 = -w*dy; // y axis points to the bottom, hence minus
1653 double x4 = h*dy,
1654 y4 = h*dx;
1655 double x3 = x4 + x2,
1656 y3 = y4 + y2;
1657
1658 // calc max and min
1659 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1660 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1661 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1662 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1663
1664
1665 wxImage image = src.ConvertToImage();
1666
1667 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1668 m_textForegroundColour.Green(),
1669 m_textForegroundColour.Blue() );
1670 image = image.Rotate( rad, wxPoint(0,0) );
1671
1672 int i_angle = (int) angle;
1673 i_angle = i_angle % 360;
1674 if (i_angle < 0)
1675 i_angle += 360;
1676 int xoffset = 0;
1677 if ((i_angle >= 90.0) && (i_angle < 270.0))
1678 xoffset = image.GetWidth();
1679 int yoffset = 0;
1680 if ((i_angle >= 0.0) && (i_angle < 180.0))
1681 yoffset = image.GetHeight();
1682
1683 if ((i_angle >= 0) && (i_angle < 90))
1684 yoffset -= (int)( cos(rad)*h );
1685 if ((i_angle >= 90) && (i_angle < 180))
1686 xoffset -= (int)( sin(rad)*h );
1687 if ((i_angle >= 180) && (i_angle < 270))
1688 yoffset -= (int)( cos(rad)*h );
1689 if ((i_angle >= 270) && (i_angle < 360))
1690 xoffset -= (int)( sin(rad)*h );
1691
1692 int i_x = x - xoffset;
1693 int i_y = y - yoffset;
1694
1695 src = image;
1696 DoDrawBitmap( src, i_x, i_y, true );
1697
1698
1699 // it would be better to draw with non underlined font and draw the line
1700 // manually here (it would be more straight...)
1701 #if 0
1702 if ( m_font.GetUnderlined() )
1703 {
1704 gdk_draw_line( m_window, m_textGC,
1705 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1706 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1707 }
1708 #endif // 0
1709
1710 // update the bounding box
1711 CalcBoundingBox(x + minX, y + minY);
1712 CalcBoundingBox(x + maxX, y + maxY);
1713 }
1714
DoGetTextExtent(const wxString & string,wxCoord * width,wxCoord * height,wxCoord * descent,wxCoord * externalLeading,wxFont * theFont) const1715 void wxWindowDC::DoGetTextExtent(const wxString &string,
1716 wxCoord *width, wxCoord *height,
1717 wxCoord *descent, wxCoord *externalLeading,
1718 wxFont *theFont) const
1719 {
1720 if ( width )
1721 *width = 0;
1722 if ( height )
1723 *height = 0;
1724 if ( descent )
1725 *descent = 0;
1726 if ( externalLeading )
1727 *externalLeading = 0;
1728
1729 if (string.empty())
1730 return;
1731
1732 // ensure that theFont is always non-NULL
1733 if ( !theFont || !theFont->Ok() )
1734 theFont = wx_const_cast(wxFont *, &m_font);
1735
1736 // and use it if it's valid
1737 if ( theFont->Ok() )
1738 {
1739 pango_layout_set_font_description
1740 (
1741 m_layout,
1742 theFont->GetNativeFontInfo()->description
1743 );
1744 }
1745
1746 // Set layout's text
1747 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont);
1748 if ( !dataUTF8 )
1749 {
1750 // hardly ideal, but what else can we do if conversion failed?
1751 return;
1752 }
1753
1754 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1755
1756 if (descent)
1757 {
1758 int h;
1759 pango_layout_get_pixel_size( m_layout, width, &h );
1760 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1761 int baseline = pango_layout_iter_get_baseline(iter);
1762 pango_layout_iter_free(iter);
1763 *descent = h - PANGO_PIXELS(baseline);
1764
1765 if (height)
1766 *height = (wxCoord) h;
1767 }
1768 else
1769 {
1770 pango_layout_get_pixel_size( m_layout, width, height );
1771 }
1772
1773 // Reset old font description
1774 if (theFont->IsOk())
1775 pango_layout_set_font_description( m_layout, m_fontdesc );
1776 }
1777
1778
DoGetPartialTextExtents(const wxString & text,wxArrayInt & widths) const1779 bool wxWindowDC::DoGetPartialTextExtents(const wxString& text,
1780 wxArrayInt& widths) const
1781 {
1782 const size_t len = text.length();
1783 widths.Empty();
1784 widths.Add(0, len);
1785
1786 if (text.empty())
1787 return true;
1788
1789 // Set layout's text
1790 const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(text, m_font);
1791 if ( !dataUTF8 )
1792 {
1793 // hardly ideal, but what else can we do if conversion failed?
1794 wxLogLastError(wxT("DoGetPartialTextExtents"));
1795 return false;
1796 }
1797
1798 pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
1799
1800 // Calculate the position of each character based on the widths of
1801 // the previous characters
1802
1803 // Code borrowed from Scintilla's PlatGTK
1804 PangoLayoutIter *iter = pango_layout_get_iter(m_layout);
1805 PangoRectangle pos;
1806 pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
1807 size_t i = 0;
1808 while (pango_layout_iter_next_cluster(iter))
1809 {
1810 pango_layout_iter_get_cluster_extents(iter, NULL, &pos);
1811 int position = PANGO_PIXELS(pos.x);
1812 widths[i++] = position;
1813 }
1814 while (i < len)
1815 widths[i++] = PANGO_PIXELS(pos.x + pos.width);
1816 pango_layout_iter_free(iter);
1817
1818 return true;
1819 }
1820
1821
GetCharWidth() const1822 wxCoord wxWindowDC::GetCharWidth() const
1823 {
1824 pango_layout_set_text( m_layout, "H", 1 );
1825 int w;
1826 pango_layout_get_pixel_size( m_layout, &w, NULL );
1827 return w;
1828 }
1829
GetCharHeight() const1830 wxCoord wxWindowDC::GetCharHeight() const
1831 {
1832 PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context));
1833 wxCHECK_MSG( metrics, -1, _T("failed to get pango font metrics") );
1834
1835 wxCoord h = PANGO_PIXELS (pango_font_metrics_get_descent (metrics) +
1836 pango_font_metrics_get_ascent (metrics));
1837 pango_font_metrics_unref (metrics);
1838 return h;
1839 }
1840
Clear()1841 void wxWindowDC::Clear()
1842 {
1843 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1844
1845 if (!m_window) return;
1846
1847 // VZ: the code below results in infinite recursion and crashes when
1848 // dc.Clear() is done from OnPaint() so I disable it for now.
1849 // I don't know what the correct fix is but Clear() surely should not
1850 // reenter OnPaint()!
1851 #if 0
1852 /* - we either are a memory dc or have a window as the
1853 owner. anything else shouldn't happen.
1854 - we don't use gdk_window_clear() as we don't set
1855 the window's background colour anymore. it is too
1856 much pain to keep the DC's and the window's back-
1857 ground colour in synch. */
1858
1859 if (m_owner)
1860 {
1861 m_owner->Clear();
1862 return;
1863 }
1864
1865 if (m_isMemDC)
1866 {
1867 int width,height;
1868 GetSize( &width, &height );
1869 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1870 return;
1871 }
1872 #else // 1
1873 int width,height;
1874 GetSize( &width, &height );
1875 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1876 #endif // 0/1
1877 }
1878
SetFont(const wxFont & font)1879 void wxWindowDC::SetFont( const wxFont &font )
1880 {
1881 m_font = font;
1882
1883 if (m_font.Ok())
1884 {
1885 if (m_fontdesc)
1886 pango_font_description_free( m_fontdesc );
1887
1888 m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description );
1889
1890
1891 if (m_owner)
1892 {
1893 PangoContext *oldContext = m_context;
1894
1895 m_context = m_owner->GtkGetPangoDefaultContext();
1896
1897 // If we switch back/forth between different contexts
1898 // we also have to create a new layout. I think so,
1899 // at least, and it doesn't hurt to do it.
1900 if (oldContext != m_context)
1901 {
1902 if (m_layout)
1903 g_object_unref (m_layout);
1904
1905 m_layout = pango_layout_new( m_context );
1906 }
1907 }
1908
1909 pango_layout_set_font_description( m_layout, m_fontdesc );
1910 }
1911 }
1912
SetPen(const wxPen & pen)1913 void wxWindowDC::SetPen( const wxPen &pen )
1914 {
1915 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1916
1917 if (m_pen == pen) return;
1918
1919 m_pen = pen;
1920
1921 if (!m_pen.Ok()) return;
1922
1923 if (!m_window) return;
1924
1925 gint width = m_pen.GetWidth();
1926 if (width <= 0)
1927 {
1928 // CMB: if width is non-zero scale it with the dc
1929 width = 1;
1930 }
1931 else
1932 {
1933 // X doesn't allow different width in x and y and so we take
1934 // the average
1935 double w = 0.5 +
1936 ( fabs((double) XLOG2DEVREL(width)) +
1937 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1938 width = (int)w;
1939 if ( !width )
1940 {
1941 // width can't be 0 or an internal GTK error occurs inside
1942 // gdk_gc_set_dashes() below
1943 width = 1;
1944 }
1945 }
1946
1947 static const wxGTKDash dotted[] = {1, 1};
1948 static const wxGTKDash short_dashed[] = {2, 2};
1949 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1950 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1951
1952 // We express dash pattern in pen width unit, so we are
1953 // independent of zoom factor and so on...
1954 int req_nb_dash;
1955 const wxGTKDash *req_dash;
1956
1957 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1958 switch (m_pen.GetStyle())
1959 {
1960 case wxUSER_DASH:
1961 {
1962 lineStyle = GDK_LINE_ON_OFF_DASH;
1963 req_nb_dash = m_pen.GetDashCount();
1964 req_dash = (wxGTKDash*)m_pen.GetDash();
1965 break;
1966 }
1967 case wxDOT:
1968 {
1969 lineStyle = GDK_LINE_ON_OFF_DASH;
1970 req_nb_dash = 2;
1971 req_dash = dotted;
1972 break;
1973 }
1974 case wxLONG_DASH:
1975 {
1976 lineStyle = GDK_LINE_ON_OFF_DASH;
1977 req_nb_dash = 2;
1978 req_dash = wxCoord_dashed;
1979 break;
1980 }
1981 case wxSHORT_DASH:
1982 {
1983 lineStyle = GDK_LINE_ON_OFF_DASH;
1984 req_nb_dash = 2;
1985 req_dash = short_dashed;
1986 break;
1987 }
1988 case wxDOT_DASH:
1989 {
1990 // lineStyle = GDK_LINE_DOUBLE_DASH;
1991 lineStyle = GDK_LINE_ON_OFF_DASH;
1992 req_nb_dash = 4;
1993 req_dash = dotted_dashed;
1994 break;
1995 }
1996
1997 case wxTRANSPARENT:
1998 case wxSTIPPLE_MASK_OPAQUE:
1999 case wxSTIPPLE:
2000 case wxSOLID:
2001 default:
2002 {
2003 lineStyle = GDK_LINE_SOLID;
2004 req_dash = (wxGTKDash*)NULL;
2005 req_nb_dash = 0;
2006 break;
2007 }
2008 }
2009
2010 if (req_dash && req_nb_dash)
2011 {
2012 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
2013 if (real_req_dash)
2014 {
2015 for (int i = 0; i < req_nb_dash; i++)
2016 real_req_dash[i] = req_dash[i] * width;
2017 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
2018 delete[] real_req_dash;
2019 }
2020 else
2021 {
2022 // No Memory. We use non-scaled dash pattern...
2023 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
2024 }
2025 }
2026
2027 GdkCapStyle capStyle = GDK_CAP_ROUND;
2028 switch (m_pen.GetCap())
2029 {
2030 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
2031 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
2032 case wxCAP_ROUND:
2033 default:
2034 {
2035 if (width <= 1)
2036 {
2037 width = 0;
2038 capStyle = GDK_CAP_NOT_LAST;
2039 }
2040 else
2041 {
2042 capStyle = GDK_CAP_ROUND;
2043 }
2044 break;
2045 }
2046 }
2047
2048 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
2049 switch (m_pen.GetJoin())
2050 {
2051 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
2052 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
2053 case wxJOIN_ROUND:
2054 default: { joinStyle = GDK_JOIN_ROUND; break; }
2055 }
2056
2057 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
2058
2059 m_pen.GetColour().CalcPixel( m_cmap );
2060 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
2061 }
2062
SetBrush(const wxBrush & brush)2063 void wxWindowDC::SetBrush( const wxBrush &brush )
2064 {
2065 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2066
2067 if (m_brush == brush) return;
2068
2069 m_brush = brush;
2070
2071 if (!m_brush.Ok()) return;
2072
2073 if (!m_window) return;
2074
2075 m_brush.GetColour().CalcPixel( m_cmap );
2076 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
2077
2078 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
2079
2080 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
2081 {
2082 if (m_brush.GetStipple()->GetDepth() != 1)
2083 {
2084 gdk_gc_set_fill( m_brushGC, GDK_TILED );
2085 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2086 }
2087 else
2088 {
2089 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2090 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() );
2091 }
2092 }
2093
2094 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
2095 {
2096 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
2097 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
2098 }
2099
2100 if (m_brush.IsHatch())
2101 {
2102 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
2103 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
2104 gdk_gc_set_stipple( m_brushGC, hatches[num] );
2105 }
2106 }
2107
SetBackground(const wxBrush & brush)2108 void wxWindowDC::SetBackground( const wxBrush &brush )
2109 {
2110 /* CMB 21/7/98: Added SetBackground. Sets background brush
2111 * for Clear() and bg colour for shapes filled with cross-hatch brush */
2112
2113 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2114
2115 if (m_backgroundBrush == brush) return;
2116
2117 m_backgroundBrush = brush;
2118
2119 if (!m_backgroundBrush.Ok()) return;
2120
2121 if (!m_window) return;
2122
2123 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
2124 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
2125 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
2126 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2127 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
2128
2129 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
2130
2131 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
2132 {
2133 if (m_backgroundBrush.GetStipple()->GetDepth() != 1)
2134 {
2135 gdk_gc_set_fill( m_bgGC, GDK_TILED );
2136 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2137 }
2138 else
2139 {
2140 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2141 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
2142 }
2143 }
2144
2145 if (m_backgroundBrush.IsHatch())
2146 {
2147 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
2148 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
2149 gdk_gc_set_stipple( m_bgGC, hatches[num] );
2150 }
2151 }
2152
SetLogicalFunction(int function)2153 void wxWindowDC::SetLogicalFunction( int function )
2154 {
2155 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2156
2157 if (m_logicalFunction == function)
2158 return;
2159
2160 // VZ: shouldn't this be a CHECK?
2161 if (!m_window)
2162 return;
2163
2164 GdkFunction mode;
2165 switch (function)
2166 {
2167 case wxXOR: mode = GDK_XOR; break;
2168 case wxINVERT: mode = GDK_INVERT; break;
2169 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
2170 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
2171 case wxCLEAR: mode = GDK_CLEAR; break;
2172 case wxSET: mode = GDK_SET; break;
2173 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
2174 case wxAND: mode = GDK_AND; break;
2175 case wxOR: mode = GDK_OR; break;
2176 case wxEQUIV: mode = GDK_EQUIV; break;
2177 case wxNAND: mode = GDK_NAND; break;
2178 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
2179 case wxCOPY: mode = GDK_COPY; break;
2180 case wxNO_OP: mode = GDK_NOOP; break;
2181 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
2182
2183 // unsupported by GTK
2184 case wxNOR: mode = GDK_COPY; break;
2185 default:
2186 wxFAIL_MSG( wxT("unsupported logical function") );
2187 mode = GDK_COPY;
2188 }
2189
2190 m_logicalFunction = function;
2191
2192 gdk_gc_set_function( m_penGC, mode );
2193 gdk_gc_set_function( m_brushGC, mode );
2194
2195 // to stay compatible with wxMSW, we don't apply ROPs to the text
2196 // operations (i.e. DrawText/DrawRotatedText).
2197 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
2198 gdk_gc_set_function( m_textGC, mode );
2199 }
2200
SetTextForeground(const wxColour & col)2201 void wxWindowDC::SetTextForeground( const wxColour &col )
2202 {
2203 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2204
2205 // don't set m_textForegroundColour to an invalid colour as we'd crash
2206 // later then (we use m_textForegroundColour.GetColor() without checking
2207 // in a few places)
2208 if ( !col.Ok() || (m_textForegroundColour == col) )
2209 return;
2210
2211 m_textForegroundColour = col;
2212
2213 if ( m_window )
2214 {
2215 m_textForegroundColour.CalcPixel( m_cmap );
2216 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2217 }
2218 }
2219
SetTextBackground(const wxColour & col)2220 void wxWindowDC::SetTextBackground( const wxColour &col )
2221 {
2222 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2223
2224 // same as above
2225 if ( !col.Ok() || (m_textBackgroundColour == col) )
2226 return;
2227
2228 m_textBackgroundColour = col;
2229
2230 if ( m_window )
2231 {
2232 m_textBackgroundColour.CalcPixel( m_cmap );
2233 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2234 }
2235 }
2236
SetBackgroundMode(int mode)2237 void wxWindowDC::SetBackgroundMode( int mode )
2238 {
2239 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2240
2241 m_backgroundMode = mode;
2242 }
2243
SetPalette(const wxPalette & WXUNUSED (palette))2244 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2245 {
2246 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2247 }
2248
DoSetClippingRegion(wxCoord x,wxCoord y,wxCoord width,wxCoord height)2249 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2250 {
2251 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2252
2253 if (!m_window) return;
2254
2255 wxRect rect;
2256 rect.x = XLOG2DEV(x);
2257 rect.y = YLOG2DEV(y);
2258 rect.width = XLOG2DEVREL(width);
2259 rect.height = YLOG2DEVREL(height);
2260
2261 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2262 {
2263 rect.x -= rect.width;
2264 }
2265
2266 if (!m_currentClippingRegion.IsNull())
2267 m_currentClippingRegion.Intersect( rect );
2268 else
2269 m_currentClippingRegion.Union( rect );
2270
2271 #if USE_PAINT_REGION
2272 if (!m_paintClippingRegion.IsNull())
2273 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2274 #endif
2275
2276 wxCoord xx, yy, ww, hh;
2277 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2278 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2279
2280 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2281 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2282 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2283 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2284 }
2285
DoSetClippingRegionAsRegion(const wxRegion & region)2286 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion ®ion )
2287 {
2288 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2289
2290 if (region.Empty())
2291 {
2292 DestroyClippingRegion();
2293 return;
2294 }
2295
2296 if (!m_window) return;
2297
2298 if (!m_currentClippingRegion.IsNull())
2299 m_currentClippingRegion.Intersect( region );
2300 else
2301 m_currentClippingRegion.Union( region );
2302
2303 #if USE_PAINT_REGION
2304 if (!m_paintClippingRegion.IsNull())
2305 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2306 #endif
2307
2308 wxCoord xx, yy, ww, hh;
2309 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2310 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2311
2312 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2313 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2314 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2315 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2316 }
2317
DestroyClippingRegion()2318 void wxWindowDC::DestroyClippingRegion()
2319 {
2320 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2321
2322 wxDC::DestroyClippingRegion();
2323
2324 m_currentClippingRegion.Clear();
2325
2326 #if USE_PAINT_REGION
2327 if (!m_paintClippingRegion.IsEmpty())
2328 m_currentClippingRegion.Union( m_paintClippingRegion );
2329 #endif
2330
2331 if (!m_window) return;
2332
2333 if (m_currentClippingRegion.IsEmpty())
2334 {
2335 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2336 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2337 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2338 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2339 }
2340 else
2341 {
2342 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2343 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2344 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2345 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2346 }
2347 }
2348
Destroy()2349 void wxWindowDC::Destroy()
2350 {
2351 if (m_penGC) wxFreePoolGC( m_penGC );
2352 m_penGC = (GdkGC*) NULL;
2353 if (m_brushGC) wxFreePoolGC( m_brushGC );
2354 m_brushGC = (GdkGC*) NULL;
2355 if (m_textGC) wxFreePoolGC( m_textGC );
2356 m_textGC = (GdkGC*) NULL;
2357 if (m_bgGC) wxFreePoolGC( m_bgGC );
2358 m_bgGC = (GdkGC*) NULL;
2359 }
2360
SetDeviceOrigin(wxCoord x,wxCoord y)2361 void wxWindowDC::SetDeviceOrigin( wxCoord x, wxCoord y )
2362 {
2363 m_deviceOriginX = x;
2364 m_deviceOriginY = y;
2365
2366 ComputeScaleAndOrigin();
2367 }
2368
SetAxisOrientation(bool xLeftRight,bool yBottomUp)2369 void wxWindowDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
2370 {
2371 m_signX = (xLeftRight ? 1 : -1);
2372 m_signY = (yBottomUp ? -1 : 1);
2373
2374 if (m_owner && m_owner->m_wxwindow && (m_owner->GetLayoutDirection() == wxLayout_RightToLeft))
2375 m_signX = -m_signX;
2376
2377 ComputeScaleAndOrigin();
2378 }
2379
ComputeScaleAndOrigin()2380 void wxWindowDC::ComputeScaleAndOrigin()
2381 {
2382 const wxRealPoint origScale(m_scaleX, m_scaleY);
2383
2384 wxDC::ComputeScaleAndOrigin();
2385
2386 // if scale has changed call SetPen to recalulate the line width
2387 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2388 {
2389 // this is a bit artificial, but we need to force wxDC to think the pen
2390 // has changed
2391 wxPen pen = m_pen;
2392 m_pen = wxNullPen;
2393 SetPen( pen );
2394 }
2395 }
2396
2397 // Resolution in pixels per logical inch
GetPPI() const2398 wxSize wxWindowDC::GetPPI() const
2399 {
2400 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2401 }
2402
GetDepth() const2403 int wxWindowDC::GetDepth() const
2404 {
2405 return gdk_drawable_get_depth(m_window);
2406 }
2407
2408
2409 //-----------------------------------------------------------------------------
2410 // wxPaintDC
2411 //-----------------------------------------------------------------------------
2412
IMPLEMENT_DYNAMIC_CLASS(wxPaintDC,wxClientDC)2413 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2414
2415 // Limit the paint region to the window size. Sometimes
2416 // the paint region is too big, and this risks X11 errors
2417 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2418 {
2419 wxRect originalRect = region.GetBox();
2420 wxRect rect(originalRect);
2421 if (rect.width + rect.x > sz.x)
2422 rect.width = sz.x - rect.x;
2423 if (rect.height + rect.y > sz.y)
2424 rect.height = sz.y - rect.y;
2425 if (rect != originalRect)
2426 {
2427 region = wxRegion(rect);
2428 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2429 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2430 rect.x, rect.y, rect.width, rect.height);
2431 }
2432 }
2433
wxPaintDC(wxWindow * win)2434 wxPaintDC::wxPaintDC( wxWindow *win )
2435 : wxClientDC( win )
2436 {
2437 #if USE_PAINT_REGION
2438 if (!win) // the base class already asserted...
2439 return;
2440
2441 if (!win->m_clipPaintRegion)
2442 return;
2443
2444 wxSize sz = win->GetSize();
2445 m_paintClippingRegion = win->m_nativeUpdateRegion;
2446 wxLimitRegionToSize(m_paintClippingRegion, sz);
2447
2448 GdkRegion *region = m_paintClippingRegion.GetRegion();
2449 if ( region )
2450 {
2451 m_currentClippingRegion.Union( m_paintClippingRegion );
2452 wxLimitRegionToSize(m_currentClippingRegion, sz);
2453
2454 if (sz.x <= 0 || sz.y <= 0)
2455 return ;
2456
2457 gdk_gc_set_clip_region( m_penGC, region );
2458 gdk_gc_set_clip_region( m_brushGC, region );
2459 gdk_gc_set_clip_region( m_textGC, region );
2460 gdk_gc_set_clip_region( m_bgGC, region );
2461 }
2462 #endif // USE_PAINT_REGION
2463 }
2464
2465 //-----------------------------------------------------------------------------
2466 // wxClientDC
2467 //-----------------------------------------------------------------------------
2468
IMPLEMENT_DYNAMIC_CLASS(wxClientDC,wxWindowDC)2469 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2470
2471 wxClientDC::wxClientDC( wxWindow *win )
2472 : wxWindowDC( win )
2473 {
2474 if (!win) // the base class already asserted...
2475 return;
2476
2477 #ifdef __WXUNIVERSAL__
2478 wxPoint ptOrigin = win->GetClientAreaOrigin();
2479 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2480 wxSize size = win->GetClientSize();
2481 SetClippingRegion(wxPoint(0, 0), size);
2482 #endif // __WXUNIVERSAL__
2483 }
2484
DoGetSize(int * width,int * height) const2485 void wxClientDC::DoGetSize(int *width, int *height) const
2486 {
2487 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2488
2489 m_owner->GetClientSize( width, height );
2490 }
2491
2492 // ----------------------------------------------------------------------------
2493 // wxDCModule
2494 // ----------------------------------------------------------------------------
2495
2496 class wxDCModule : public wxModule
2497 {
2498 public:
2499 bool OnInit();
2500 void OnExit();
2501
2502 private:
2503 DECLARE_DYNAMIC_CLASS(wxDCModule)
2504 };
2505
IMPLEMENT_DYNAMIC_CLASS(wxDCModule,wxModule)2506 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2507
2508 bool wxDCModule::OnInit()
2509 {
2510 wxInitGCPool();
2511 return true;
2512 }
2513
OnExit()2514 void wxDCModule::OnExit()
2515 {
2516 wxCleanUpGCPool();
2517 }
2518