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[wxWidgets.git] / src / gtk1 / dcclient.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: gtk/dcclient.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // RCS-ID: $Id$
6 // Copyright: (c) 1998 Robert Roebling, Chris Breeze
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
9
10 // 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 #include "wx/dcmemory.h"
19 #include "wx/image.h"
20 #include "wx/module.h"
21 #include "wx/log.h"
22 #include "wx/fontutil.h"
23
24 #include "wx/gtk1/win_gtk.h"
25
26 #include "wx/math.h" // for floating-point functions
27
28 #include <gdk/gdk.h>
29 #include <gdk/gdkx.h>
30 #include <gdk/gdkprivate.h>
31 #include <gtk/gtk.h>
32
33 //-----------------------------------------------------------------------------
34 // local defines
35 //-----------------------------------------------------------------------------
36
37 #define USE_PAINT_REGION 1
38
39 //-----------------------------------------------------------------------------
40 // local data
41 //-----------------------------------------------------------------------------
42
43 #include "bdiag.xbm"
44 #include "fdiag.xbm"
45 #include "cdiag.xbm"
46 #include "horiz.xbm"
47 #include "verti.xbm"
48 #include "cross.xbm"
49 #define num_hatches 6
50
51 #define IS_15_PIX_HATCH(s) ((s)==wxCROSSDIAG_HATCH || (s)==wxHORIZONTAL_HATCH || (s)==wxVERTICAL_HATCH)
52 #define IS_16_PIX_HATCH(s) ((s)!=wxCROSSDIAG_HATCH && (s)!=wxHORIZONTAL_HATCH && (s)!=wxVERTICAL_HATCH)
53
54
55 static GdkPixmap *hatches[num_hatches];
56 static GdkPixmap **hatch_bitmap = (GdkPixmap **) NULL;
57
58 extern GtkWidget *wxGetRootWindow();
59
60 //-----------------------------------------------------------------------------
61 // constants
62 //-----------------------------------------------------------------------------
63
64 const double RAD2DEG = 180.0 / M_PI;
65
66 // ----------------------------------------------------------------------------
67 // private functions
68 // ----------------------------------------------------------------------------
69
70 static inline double dmax(double a, double b) { return a > b ? a : b; }
71 static inline double dmin(double a, double b) { return a < b ? a : b; }
72
73 static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
74
75 //-----------------------------------------------------------------------------
76 // temporary implementation of the missing GDK function
77 //-----------------------------------------------------------------------------
78
79 #include "gdk/gdkprivate.h"
80
81 void gdk_wx_draw_bitmap(GdkDrawable *drawable,
82 GdkGC *gc,
83 GdkDrawable *src,
84 gint xsrc,
85 gint ysrc,
86 gint xdest,
87 gint ydest,
88 gint width,
89 gint height)
90 {
91 wxCHECK_RET( drawable, _T("NULL drawable in gdk_wx_draw_bitmap") );
92 wxCHECK_RET( src, _T("NULL src in gdk_wx_draw_bitmap") );
93 wxCHECK_RET( gc, _T("NULL gc in gdk_wx_draw_bitmap") );
94
95 GdkWindowPrivate *drawable_private;
96 GdkWindowPrivate *src_private;
97 GdkGCPrivate *gc_private;
98
99 drawable_private = (GdkWindowPrivate*) drawable;
100 src_private = (GdkWindowPrivate*) src;
101 if (drawable_private->destroyed || src_private->destroyed)
102 return;
103
104 gint src_width = src_private->width;
105 gint src_height = src_private->height;
106
107 gc_private = (GdkGCPrivate*) gc;
108
109 if (width == -1) width = src_width;
110 if (height == -1) height = src_height;
111
112 XCopyPlane( drawable_private->xdisplay,
113 src_private->xwindow,
114 drawable_private->xwindow,
115 gc_private->xgc,
116 xsrc, ysrc,
117 width, height,
118 xdest, ydest,
119 1 );
120 }
121
122 //-----------------------------------------------------------------------------
123 // Implement Pool of Graphic contexts. Creating them takes too much time.
124 //-----------------------------------------------------------------------------
125
126 enum wxPoolGCType
127 {
128 wxGC_ERROR = 0,
129 wxTEXT_MONO,
130 wxBG_MONO,
131 wxPEN_MONO,
132 wxBRUSH_MONO,
133 wxTEXT_COLOUR,
134 wxBG_COLOUR,
135 wxPEN_COLOUR,
136 wxBRUSH_COLOUR,
137 wxTEXT_SCREEN,
138 wxBG_SCREEN,
139 wxPEN_SCREEN,
140 wxBRUSH_SCREEN
141 };
142
143 struct wxGC
144 {
145 GdkGC *m_gc;
146 wxPoolGCType m_type;
147 bool m_used;
148 };
149
150 #define GC_POOL_ALLOC_SIZE 100
151
152 static int wxGCPoolSize = 0;
153
154 static wxGC *wxGCPool = NULL;
155
156 static void wxInitGCPool()
157 {
158 // This really could wait until the first call to
159 // wxGetPoolGC, but we will make the first allocation
160 // now when other initialization is being performed.
161
162 // Set initial pool size.
163 wxGCPoolSize = GC_POOL_ALLOC_SIZE;
164
165 // Allocate initial pool.
166 wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC));
167 if (wxGCPool == NULL)
168 {
169 // If we cannot malloc, then fail with error
170 // when debug is enabled. If debug is not enabled,
171 // the problem will eventually get caught
172 // in wxGetPoolGC.
173 wxFAIL_MSG( wxT("Cannot allocate GC pool") );
174 return;
175 }
176
177 // Zero initial pool.
178 memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC));
179 }
180
181 static void wxCleanUpGCPool()
182 {
183 for (int i = 0; i < wxGCPoolSize; i++)
184 {
185 if (wxGCPool[i].m_gc)
186 gdk_gc_unref( wxGCPool[i].m_gc );
187 }
188
189 free(wxGCPool);
190 wxGCPool = NULL;
191 wxGCPoolSize = 0;
192 }
193
194 static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type )
195 {
196 wxGC *pptr;
197
198 // Look for an available GC.
199 for (int i = 0; i < wxGCPoolSize; i++)
200 {
201 if (!wxGCPool[i].m_gc)
202 {
203 wxGCPool[i].m_gc = gdk_gc_new( window );
204 gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE );
205 wxGCPool[i].m_type = type;
206 wxGCPool[i].m_used = false;
207 }
208 if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type))
209 {
210 wxGCPool[i].m_used = true;
211 return wxGCPool[i].m_gc;
212 }
213 }
214
215 // We did not find an available GC.
216 // We need to grow the GC pool.
217 pptr = (wxGC *)realloc(wxGCPool,
218 (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC));
219 if (pptr != NULL)
220 {
221 // Initialize newly allocated pool.
222 wxGCPool = pptr;
223 memset(&wxGCPool[wxGCPoolSize], 0,
224 GC_POOL_ALLOC_SIZE*sizeof(wxGC));
225
226 // Initialize entry we will return.
227 wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
228 gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE );
229 wxGCPool[wxGCPoolSize].m_type = type;
230 wxGCPool[wxGCPoolSize].m_used = true;
231
232 // Set new value of pool size.
233 wxGCPoolSize += GC_POOL_ALLOC_SIZE;
234
235 // Return newly allocated entry.
236 return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc;
237 }
238
239 // The realloc failed. Fall through to error.
240 wxFAIL_MSG( wxT("No GC available") );
241
242 return (GdkGC*) NULL;
243 }
244
245 static void wxFreePoolGC( GdkGC *gc )
246 {
247 for (int i = 0; i < wxGCPoolSize; i++)
248 {
249 if (wxGCPool[i].m_gc == gc)
250 {
251 wxGCPool[i].m_used = false;
252 return;
253 }
254 }
255
256 wxFAIL_MSG( wxT("Wrong GC") );
257 }
258
259 //-----------------------------------------------------------------------------
260 // wxWindowDC
261 //-----------------------------------------------------------------------------
262
263 IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
264
265 wxWindowDC::wxWindowDC()
266 {
267 m_penGC = (GdkGC *) NULL;
268 m_brushGC = (GdkGC *) NULL;
269 m_textGC = (GdkGC *) NULL;
270 m_bgGC = (GdkGC *) NULL;
271 m_cmap = (GdkColormap *) NULL;
272 m_isMemDC = false;
273 m_isScreenDC = false;
274 m_owner = (wxWindow *)NULL;
275 }
276
277 wxWindowDC::wxWindowDC( wxWindow *window )
278 {
279 wxASSERT_MSG( window, wxT("DC needs a window") );
280
281 m_penGC = (GdkGC *) NULL;
282 m_brushGC = (GdkGC *) NULL;
283 m_textGC = (GdkGC *) NULL;
284 m_bgGC = (GdkGC *) NULL;
285 m_cmap = (GdkColormap *) NULL;
286 m_owner = (wxWindow *)NULL;
287 m_isMemDC = false;
288 m_isScreenDC = false;
289 m_font = window->GetFont();
290
291 GtkWidget *widget = window->m_wxwindow;
292
293 // Some controls don't have m_wxwindow - like wxStaticBox, but the user
294 // code should still be able to create wxClientDCs for them, so we will
295 // use the parent window here then.
296 if ( !widget )
297 {
298 window = window->GetParent();
299 widget = window->m_wxwindow;
300 }
301
302 wxASSERT_MSG( widget, wxT("DC needs a widget") );
303
304 GtkPizza *pizza = GTK_PIZZA( widget );
305 m_window = pizza->bin_window;
306
307 // Window not realized ?
308 if (!m_window)
309 {
310 // Don't report problems as per MSW.
311 m_ok = true;
312
313 return;
314 }
315
316 m_cmap = gtk_widget_get_colormap( widget ? widget : window->m_widget );
317
318 SetUpDC();
319
320 /* this must be done after SetUpDC, bacause SetUpDC calls the
321 repective SetBrush, SetPen, SetBackground etc functions
322 to set up the DC. SetBackground call m_owner->SetBackground
323 and this might not be desired as the standard dc background
324 is white whereas a window might assume gray to be the
325 standard (as e.g. wxStatusBar) */
326
327 m_owner = window;
328 }
329
330 wxWindowDC::~wxWindowDC()
331 {
332 Destroy();
333 }
334
335 void wxWindowDC::SetUpDC()
336 {
337 m_ok = true;
338
339 wxASSERT_MSG( !m_penGC, wxT("GCs already created") );
340
341 if (m_isScreenDC)
342 {
343 m_penGC = wxGetPoolGC( m_window, wxPEN_SCREEN );
344 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_SCREEN );
345 m_textGC = wxGetPoolGC( m_window, wxTEXT_SCREEN );
346 m_bgGC = wxGetPoolGC( m_window, wxBG_SCREEN );
347 }
348 else
349 if (m_isMemDC && (((wxMemoryDC*)this)->m_selected.GetDepth() == 1))
350 {
351 m_penGC = wxGetPoolGC( m_window, wxPEN_MONO );
352 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_MONO );
353 m_textGC = wxGetPoolGC( m_window, wxTEXT_MONO );
354 m_bgGC = wxGetPoolGC( m_window, wxBG_MONO );
355 }
356 else
357 {
358 m_penGC = wxGetPoolGC( m_window, wxPEN_COLOUR );
359 m_brushGC = wxGetPoolGC( m_window, wxBRUSH_COLOUR );
360 m_textGC = wxGetPoolGC( m_window, wxTEXT_COLOUR );
361 m_bgGC = wxGetPoolGC( m_window, wxBG_COLOUR );
362 }
363
364 /* background colour */
365 m_backgroundBrush = *wxWHITE_BRUSH;
366 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
367 GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor();
368
369 /* m_textGC */
370 m_textForegroundColour.CalcPixel( m_cmap );
371 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
372
373 m_textBackgroundColour.CalcPixel( m_cmap );
374 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
375
376 gdk_gc_set_fill( m_textGC, GDK_SOLID );
377
378 /* m_penGC */
379 m_pen.GetColour().CalcPixel( m_cmap );
380 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
381 gdk_gc_set_background( m_penGC, bg_col );
382
383 gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND );
384
385 /* m_brushGC */
386 m_brush.GetColour().CalcPixel( m_cmap );
387 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
388 gdk_gc_set_background( m_brushGC, bg_col );
389
390 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
391
392 /* m_bgGC */
393 gdk_gc_set_background( m_bgGC, bg_col );
394 gdk_gc_set_foreground( m_bgGC, bg_col );
395
396 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
397
398 /* ROPs */
399 gdk_gc_set_function( m_textGC, GDK_COPY );
400 gdk_gc_set_function( m_brushGC, GDK_COPY );
401 gdk_gc_set_function( m_penGC, GDK_COPY );
402
403 /* clipping */
404 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
405 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
406 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
407 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
408
409 if (!hatch_bitmap)
410 {
411 hatch_bitmap = hatches;
412 hatch_bitmap[0] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, bdiag_bits, bdiag_width, bdiag_height );
413 hatch_bitmap[1] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cdiag_bits, cdiag_width, cdiag_height );
414 hatch_bitmap[2] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, fdiag_bits, fdiag_width, fdiag_height );
415 hatch_bitmap[3] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, cross_bits, cross_width, cross_height );
416 hatch_bitmap[4] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, horiz_bits, horiz_width, horiz_height );
417 hatch_bitmap[5] = gdk_bitmap_create_from_data( (GdkWindow *) NULL, verti_bits, verti_width, verti_height );
418 }
419 }
420
421 void wxWindowDC::DoGetSize( int* width, int* height ) const
422 {
423 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
424
425 m_owner->GetSize(width, height);
426 }
427
428 extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y,
429 const wxColour & col, int style);
430
431 bool wxWindowDC::DoFloodFill(wxCoord x, wxCoord y,
432 const wxColour& col, int style)
433 {
434 return wxDoFloodFill(this, x, y, col, style);
435 }
436
437 bool wxWindowDC::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const
438 {
439 // Generic (and therefore rather inefficient) method.
440 // Could be improved.
441 wxMemoryDC memdc;
442 wxBitmap bitmap(1, 1);
443 memdc.SelectObject(bitmap);
444 memdc.Blit(0, 0, 1, 1, (wxDC*) this, x1, y1);
445 memdc.SelectObject(wxNullBitmap);
446
447 wxImage image = bitmap.ConvertToImage();
448 col->Set(image.GetRed(0, 0), image.GetGreen(0, 0), image.GetBlue(0, 0));
449 return true;
450 }
451
452 void wxWindowDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
453 {
454 wxCHECK_RET( Ok(), wxT("invalid window dc") );
455
456 if (m_pen.GetStyle() != wxTRANSPARENT)
457 {
458 if (m_window)
459 gdk_draw_line( m_window, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
460
461 CalcBoundingBox(x1, y1);
462 CalcBoundingBox(x2, y2);
463 }
464 }
465
466 void wxWindowDC::DoCrossHair( wxCoord x, wxCoord y )
467 {
468 wxCHECK_RET( Ok(), wxT("invalid window dc") );
469
470 if (m_pen.GetStyle() != wxTRANSPARENT)
471 {
472 int w = 0;
473 int h = 0;
474 GetSize( &w, &h );
475 wxCoord xx = XLOG2DEV(x);
476 wxCoord yy = YLOG2DEV(y);
477 if (m_window)
478 {
479 gdk_draw_line( m_window, m_penGC, 0, yy, XLOG2DEVREL(w), yy );
480 gdk_draw_line( m_window, m_penGC, xx, 0, xx, YLOG2DEVREL(h) );
481 }
482 }
483 }
484
485 void wxWindowDC::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
486 wxCoord xc, wxCoord yc )
487 {
488 wxCHECK_RET( Ok(), wxT("invalid window dc") );
489
490 wxCoord xx1 = XLOG2DEV(x1);
491 wxCoord yy1 = YLOG2DEV(y1);
492 wxCoord xx2 = XLOG2DEV(x2);
493 wxCoord yy2 = YLOG2DEV(y2);
494 wxCoord xxc = XLOG2DEV(xc);
495 wxCoord yyc = YLOG2DEV(yc);
496 double dx = xx1 - xxc;
497 double dy = yy1 - yyc;
498 double radius = sqrt((double)(dx*dx+dy*dy));
499 wxCoord r = (wxCoord)radius;
500 double radius1, radius2;
501
502 if (xx1 == xx2 && yy1 == yy2)
503 {
504 radius1 = 0.0;
505 radius2 = 360.0;
506 }
507 else if ( wxIsNullDouble(radius) )
508 {
509 radius1 =
510 radius2 = 0.0;
511 }
512 else
513 {
514 radius1 = (xx1 - xxc == 0) ?
515 (yy1 - yyc < 0) ? 90.0 : -90.0 :
516 -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
517 radius2 = (xx2 - xxc == 0) ?
518 (yy2 - yyc < 0) ? 90.0 : -90.0 :
519 -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
520 }
521 wxCoord alpha1 = wxCoord(radius1 * 64.0);
522 wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0);
523 while (alpha2 <= 0) alpha2 += 360*64;
524 while (alpha1 > 360*64) alpha1 -= 360*64;
525
526 if (m_window)
527 {
528 if (m_brush.GetStyle() != wxTRANSPARENT)
529 {
530 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
531 {
532 gdk_gc_set_ts_origin( m_textGC,
533 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
534 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
535 gdk_draw_arc( m_window, m_textGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
536 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
537 } else
538 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
539 {
540 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
541 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
542 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
543 } else
544 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
545 {
546 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
547 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
548 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
549 } else
550 if (m_brush.GetStyle() == wxSTIPPLE)
551 {
552 gdk_gc_set_ts_origin( m_brushGC,
553 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
554 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
555 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
556 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
557 }
558 else
559 {
560 gdk_draw_arc( m_window, m_brushGC, TRUE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
561 }
562 }
563
564 if (m_pen.GetStyle() != wxTRANSPARENT)
565 {
566 gdk_draw_arc( m_window, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 );
567
568 gdk_draw_line( m_window, m_penGC, xx1, yy1, xxc, yyc );
569 gdk_draw_line( m_window, m_penGC, xxc, yyc, xx2, yy2 );
570 }
571 }
572
573 CalcBoundingBox (x1, y1);
574 CalcBoundingBox (x2, y2);
575 }
576
577 void wxWindowDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea )
578 {
579 wxCHECK_RET( Ok(), wxT("invalid window dc") );
580
581 wxCoord xx = XLOG2DEV(x);
582 wxCoord yy = YLOG2DEV(y);
583 wxCoord ww = m_signX * XLOG2DEVREL(width);
584 wxCoord hh = m_signY * YLOG2DEVREL(height);
585
586 // CMB: handle -ve width and/or height
587 if (ww < 0) { ww = -ww; xx = xx - ww; }
588 if (hh < 0) { hh = -hh; yy = yy - hh; }
589
590 if (m_window)
591 {
592 wxCoord start = wxCoord(sa * 64.0);
593 wxCoord end = wxCoord((ea-sa) * 64.0);
594
595 if (m_brush.GetStyle() != wxTRANSPARENT)
596 {
597 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
598 {
599 gdk_gc_set_ts_origin( m_textGC,
600 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
601 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
602 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, start, end );
603 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
604 } else
605 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
606 {
607 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
608 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
609 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
610 } else
611 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
612 {
613 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
614 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
615 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
616 } else
617 if (m_brush.GetStyle() == wxSTIPPLE)
618 {
619 gdk_gc_set_ts_origin( m_brushGC,
620 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
621 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
622 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
623 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
624 }
625 else
626 {
627 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, start, end );
628 }
629 }
630
631 if (m_pen.GetStyle() != wxTRANSPARENT)
632 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, start, end );
633 }
634
635 CalcBoundingBox (x, y);
636 CalcBoundingBox (x + width, y + height);
637 }
638
639 void wxWindowDC::DoDrawPoint( wxCoord x, wxCoord y )
640 {
641 wxCHECK_RET( Ok(), wxT("invalid window dc") );
642
643 if ((m_pen.GetStyle() != wxTRANSPARENT) && m_window)
644 gdk_draw_point( m_window, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
645
646 CalcBoundingBox (x, y);
647 }
648
649 void wxWindowDC::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
650 {
651 wxCHECK_RET( Ok(), wxT("invalid window dc") );
652
653 if (m_pen.GetStyle() == wxTRANSPARENT) return;
654 if (n <= 0) return;
655
656 //Check, if scaling is necessary
657 bool doScale(true);
658 long val(10);
659 if (!xoffset)
660 if (!yoffset)
661 if (XLOG2DEV(val)==val)
662 if (YLOG2DEV(val)==val)
663 doScale = false;
664
665 GdkPoint *gpts = NULL;
666
667 if (doScale){
668 gpts = new GdkPoint[n];
669 if (! gpts)
670 {
671 wxFAIL_MSG( wxT("Cannot allocate PolyLine") );
672 return;
673 }
674
675 for (int i = 0; i < n; i++)
676 {
677 wxCoord x1 = XLOG2DEV(points[i].x + xoffset);
678 wxCoord y1 = YLOG2DEV(points[i].y + yoffset);
679
680 CalcBoundingBox( x1 + xoffset, y1 + yoffset );
681
682 gpts[i].x = x1;
683 gpts[i].y = y1;
684 }
685 }
686 else {
687 for (int i = 0; i < n; i++) {
688 CalcBoundingBox( points[i].x, points[i].y );
689 }
690
691 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
692 gpts = reinterpret_cast<GdkPoint*>(points);
693 }
694
695 if (m_window)
696 gdk_draw_lines( m_window, m_penGC, gpts, n);
697
698 if (doScale)
699 delete[] gpts;
700 }
701
702 void wxWindowDC::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, int WXUNUSED(fillStyle) )
703 {
704 wxCHECK_RET( Ok(), wxT("invalid window dc") );
705
706 if (n <= 0) return;
707
708 //Check, if scaling is necessary
709 bool doScale(true);
710 long val(10);
711 if (!xoffset)
712 if (!yoffset)
713 if (XLOG2DEV(val)==val)
714 if (YLOG2DEV(val)==val){
715 doScale = false;
716 }
717
718 GdkPoint *gdkpoints = NULL;
719
720 if (doScale){
721 gdkpoints = new GdkPoint[n+1]; //FIXME: Why the "+1"
722
723 int i;
724 for (i = 0 ; i < n ; i++)
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 else {
733 int i(0);
734 for (; i < n ; ++i) {
735 CalcBoundingBox( points[i].x, points[i].y );
736 }
737 //GdkPoint and wxPoint have the same memory allignment, so we can cast one into another
738 gdkpoints = reinterpret_cast<GdkPoint*> (points);
739 }
740
741 if (m_window)
742 {
743 //I think wxSOLID is the most often used style (it is for me),
744 //so I put it in front of the if ... ifelse's
745 if (m_brush.GetStyle() == wxSOLID)
746 {
747 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
748 }else
749 if (m_brush.GetStyle() != wxTRANSPARENT)
750 {
751 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
752 {
753 gdk_gc_set_ts_origin( m_textGC,
754 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
755 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
756 gdk_draw_polygon( m_window, m_textGC, TRUE, gdkpoints, n );
757 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
758 } else
759 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
760 {
761 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
762 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
763 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
764 } else
765 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
766 {
767 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
768 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
769 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
770 } else
771 if (m_brush.GetStyle() == wxSTIPPLE)
772 {
773 gdk_gc_set_ts_origin( m_brushGC,
774 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
775 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
776 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
777 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
778 }
779 else
780 {
781 gdk_draw_polygon( m_window, m_brushGC, TRUE, gdkpoints, n );
782 }
783 }
784
785 if (m_pen.GetStyle() != wxTRANSPARENT)
786 {
787 /*
788 for (i = 0 ; i < n ; i++)
789 {
790 gdk_draw_line( m_window, m_penGC,
791 gdkpoints[i%n].x,
792 gdkpoints[i%n].y,
793 gdkpoints[(i+1)%n].x,
794 gdkpoints[(i+1)%n].y);
795 }
796 */
797 gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
798
799 }
800 }
801
802 if (doScale)
803 delete[] gdkpoints;
804 }
805
806 void wxWindowDC::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
807 {
808 wxCHECK_RET( Ok(), 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_window)
823 {
824 if (m_brush.GetStyle() != wxTRANSPARENT)
825 {
826 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
827 {
828 gdk_gc_set_ts_origin( m_textGC,
829 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
830 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
831 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy, ww, hh );
832 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
833 } else
834 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
835 {
836 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
837 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
838 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
839 } else
840 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
841 {
842 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
843 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
844 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
845 } else
846 if (m_brush.GetStyle() == wxSTIPPLE)
847 {
848 gdk_gc_set_ts_origin( m_brushGC,
849 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
850 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
851 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
852 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
853 }
854 else
855 {
856 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy, ww, hh );
857 }
858 }
859
860 if (m_pen.GetStyle() != wxTRANSPARENT)
861 gdk_draw_rectangle( m_window, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
862 }
863
864 CalcBoundingBox( x, y );
865 CalcBoundingBox( x + width, y + height );
866 }
867
868 void wxWindowDC::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
869 {
870 wxCHECK_RET( Ok(), wxT("invalid window dc") );
871
872 if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
873
874 wxCoord xx = XLOG2DEV(x);
875 wxCoord yy = YLOG2DEV(y);
876 wxCoord ww = m_signX * XLOG2DEVREL(width);
877 wxCoord hh = m_signY * YLOG2DEVREL(height);
878 wxCoord rr = XLOG2DEVREL((wxCoord)radius);
879
880 // CMB: handle -ve width and/or height
881 if (ww < 0) { ww = -ww; xx = xx - ww; }
882 if (hh < 0) { hh = -hh; yy = yy - hh; }
883
884 // CMB: if radius is zero use DrawRectangle() instead to avoid
885 // X drawing errors with small radii
886 if (rr == 0)
887 {
888 DrawRectangle( x, y, width, height );
889 return;
890 }
891
892 // CMB: draw nothing if transformed w or h is 0
893 if (ww == 0 || hh == 0) return;
894
895 // CMB: adjust size if outline is drawn otherwise the result is
896 // 1 pixel too wide and high
897 if (m_pen.GetStyle() != wxTRANSPARENT)
898 {
899 ww--;
900 hh--;
901 }
902
903 if (m_window)
904 {
905 // CMB: ensure dd is not larger than rectangle otherwise we
906 // get an hour glass shape
907 wxCoord dd = 2 * rr;
908 if (dd > ww) dd = ww;
909 if (dd > hh) dd = hh;
910 rr = dd / 2;
911
912 if (m_brush.GetStyle() != wxTRANSPARENT)
913 {
914 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
915 {
916 gdk_gc_set_ts_origin( m_textGC,
917 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
918 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
919 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx+rr, yy, ww-dd+1, hh );
920 gdk_draw_rectangle( m_window, m_textGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
921 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
922 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
923 gdk_draw_arc( m_window, m_textGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
924 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
925 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
926 } else
927 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
928 {
929 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
930 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
931 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
932 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
933 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
934 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
935 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
936 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
937 } else
938 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
939 {
940 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
941 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
942 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
943 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
944 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
945 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
946 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
947 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
948 } else
949 if (m_brush.GetStyle() == wxSTIPPLE)
950 {
951 gdk_gc_set_ts_origin( m_brushGC,
952 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
953 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
954 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
955 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
956 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
957 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
958 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
959 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
960 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
961 }
962 else
963 {
964 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx+rr, yy, ww-dd+1, hh );
965 gdk_draw_rectangle( m_window, m_brushGC, TRUE, xx, yy+rr, ww, hh-dd+1 );
966 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, dd, dd, 90*64, 90*64 );
967 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
968 gdk_draw_arc( m_window, m_brushGC, TRUE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
969 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
970 }
971 }
972
973 if (m_pen.GetStyle() != wxTRANSPARENT)
974 {
975 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy, xx+ww-rr, yy );
976 gdk_draw_line( m_window, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh );
977 gdk_draw_line( m_window, m_penGC, xx, yy+rr+1, xx, yy+hh-rr );
978 gdk_draw_line( m_window, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr );
979 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 );
980 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 );
981 gdk_draw_arc( m_window, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 );
982 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 );
983 }
984 }
985
986 // this ignores the radius
987 CalcBoundingBox( x, y );
988 CalcBoundingBox( x + width, y + height );
989 }
990
991 void wxWindowDC::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
992 {
993 wxCHECK_RET( Ok(), wxT("invalid window dc") );
994
995 wxCoord xx = XLOG2DEV(x);
996 wxCoord yy = YLOG2DEV(y);
997 wxCoord ww = m_signX * XLOG2DEVREL(width);
998 wxCoord hh = m_signY * YLOG2DEVREL(height);
999
1000 // CMB: handle -ve width and/or height
1001 if (ww < 0) { ww = -ww; xx = xx - ww; }
1002 if (hh < 0) { hh = -hh; yy = yy - hh; }
1003
1004 if (m_window)
1005 {
1006 if (m_brush.GetStyle() != wxTRANSPARENT)
1007 {
1008 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1009 {
1010 gdk_gc_set_ts_origin( m_textGC,
1011 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1012 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
1013 gdk_draw_arc( m_window, m_textGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1014 gdk_gc_set_ts_origin( m_textGC, 0, 0 );
1015 } else
1016 if (IS_15_PIX_HATCH(m_brush.GetStyle()))
1017 {
1018 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 15, m_deviceOriginY % 15 );
1019 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1020 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1021 } else
1022 if (IS_16_PIX_HATCH(m_brush.GetStyle()))
1023 {
1024 gdk_gc_set_ts_origin( m_brushGC, m_deviceOriginX % 16, m_deviceOriginY % 16 );
1025 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1026 gdk_gc_set_ts_origin( m_brushGC, 0, 0 );
1027 } else
1028 if (m_brush.GetStyle() == wxSTIPPLE)
1029 {
1030 gdk_gc_set_ts_origin( m_brushGC,
1031 m_deviceOriginX % m_brush.GetStipple()->GetWidth(),
1032 m_deviceOriginY % m_brush.GetStipple()->GetHeight() );
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 }
1036 else
1037 {
1038 gdk_draw_arc( m_window, m_brushGC, TRUE, xx, yy, ww, hh, 0, 360*64 );
1039 }
1040 }
1041
1042 if (m_pen.GetStyle() != wxTRANSPARENT)
1043 gdk_draw_arc( m_window, m_penGC, FALSE, xx, yy, ww, hh, 0, 360*64 );
1044 }
1045
1046 CalcBoundingBox( x, y );
1047 CalcBoundingBox( x + width, y + height );
1048 }
1049
1050 void wxWindowDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
1051 {
1052 // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why
1053 DoDrawBitmap( (const wxBitmap&)icon, x, y, true );
1054 }
1055
1056 void wxWindowDC::DoDrawBitmap( const wxBitmap &bitmap,
1057 wxCoord x, wxCoord y,
1058 bool useMask )
1059 {
1060 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1061
1062 wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1063
1064 bool is_mono = (bitmap.GetBitmap() != NULL);
1065
1066 // scale/translate size and position
1067 int xx = XLOG2DEV(x);
1068 int yy = YLOG2DEV(y);
1069
1070 int w = bitmap.GetWidth();
1071 int h = bitmap.GetHeight();
1072
1073 CalcBoundingBox( x, y );
1074 CalcBoundingBox( x + w, y + h );
1075
1076 if (!m_window) return;
1077
1078 int ww = XLOG2DEVREL(w);
1079 int hh = YLOG2DEVREL(h);
1080
1081 // compare to current clipping region
1082 if (!m_currentClippingRegion.IsNull())
1083 {
1084 wxRegion tmp( xx,yy,ww,hh );
1085 tmp.Intersect( m_currentClippingRegion );
1086 if (tmp.IsEmpty())
1087 return;
1088 }
1089
1090 // scale bitmap if required
1091 wxBitmap use_bitmap = bitmap;
1092 if ((w != ww) || (h != hh))
1093 use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
1094
1095 // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
1096 // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
1097 // have to call GetPixmap() here -- it converts the pixbuf into pixmap
1098 // and also creates the mask as a side-effect:
1099 use_bitmap.GetPixmap();
1100
1101 // apply mask if any
1102 GdkBitmap *mask = (GdkBitmap *) NULL;
1103 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1104
1105 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1106
1107 if (useMask && mask)
1108 {
1109 if (!m_currentClippingRegion.IsNull())
1110 {
1111 GdkColor col;
1112 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, ww, hh, 1 );
1113 GdkGC *gc = gdk_gc_new( new_mask );
1114 col.pixel = 0;
1115 gdk_gc_set_foreground( gc, &col );
1116 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1117 col.pixel = 0;
1118 gdk_gc_set_background( gc, &col );
1119 col.pixel = 1;
1120 gdk_gc_set_foreground( gc, &col );
1121 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1122 gdk_gc_set_clip_origin( gc, -xx, -yy );
1123 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1124 gdk_gc_set_stipple( gc, mask );
1125 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, ww, hh );
1126 gdk_gc_unref( gc );
1127 }
1128
1129 if (is_mono)
1130 {
1131 if (new_mask)
1132 gdk_gc_set_clip_mask( m_textGC, new_mask );
1133 else
1134 gdk_gc_set_clip_mask( m_textGC, mask );
1135 gdk_gc_set_clip_origin( m_textGC, xx, yy );
1136 }
1137 else
1138 {
1139 if (new_mask)
1140 gdk_gc_set_clip_mask( m_penGC, new_mask );
1141 else
1142 gdk_gc_set_clip_mask( m_penGC, mask );
1143 gdk_gc_set_clip_origin( m_penGC, xx, yy );
1144 }
1145 }
1146
1147 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1148 // drawing a mono-bitmap (XBitmap) we use the current text GC
1149 if (is_mono)
1150 {
1151 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), 0, 0, xx, yy, -1, -1 );
1152 }
1153 else
1154 {
1155 gdk_draw_pixmap(m_window, m_penGC,
1156 use_bitmap.GetPixmap(),
1157 0, 0, xx, yy, -1, -1);
1158 }
1159
1160 // remove mask again if any
1161 if (useMask && mask)
1162 {
1163 if (is_mono)
1164 {
1165 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1166 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1167 if (!m_currentClippingRegion.IsNull())
1168 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1169 }
1170 else
1171 {
1172 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1173 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1174 if (!m_currentClippingRegion.IsNull())
1175 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1176 }
1177 }
1178
1179 if (new_mask)
1180 gdk_bitmap_unref( new_mask );
1181 }
1182
1183 bool wxWindowDC::DoBlit( wxCoord xdest, wxCoord ydest,
1184 wxCoord width, wxCoord height,
1185 wxDC *source,
1186 wxCoord xsrc, wxCoord ysrc,
1187 int logical_func,
1188 bool useMask,
1189 wxCoord xsrcMask, wxCoord ysrcMask )
1190 {
1191 wxCHECK_MSG( Ok(), false, wxT("invalid window dc") );
1192
1193 wxCHECK_MSG( source, false, wxT("invalid source dc") );
1194
1195 if (!m_window) return false;
1196
1197 // transform the source DC coords to the device ones
1198 xsrc = source->XLOG2DEV(xsrc);
1199 ysrc = source->YLOG2DEV(ysrc);
1200
1201 wxClientDC *srcDC = (wxClientDC*)source;
1202 wxMemoryDC *memDC = (wxMemoryDC*)source;
1203
1204 bool use_bitmap_method = false;
1205 bool is_mono = false;
1206
1207 if (xsrcMask == -1 && ysrcMask == -1)
1208 {
1209 xsrcMask = xsrc;
1210 ysrcMask = ysrc;
1211 }
1212
1213 if (srcDC->m_isMemDC)
1214 {
1215 if (!memDC->m_selected.Ok()) return false;
1216
1217 is_mono = (memDC->m_selected.GetDepth() == 1);
1218
1219 // we use the "XCopyArea" way to copy a memory dc into
1220 // a different window if the memory dc BOTH
1221 // a) doesn't have any mask or its mask isn't used
1222 // b) it is clipped
1223 // c) is not 1-bit
1224
1225 if (useMask && (memDC->m_selected.GetMask()))
1226 {
1227 // we HAVE TO use the direct way for memory dcs
1228 // that have mask since the XCopyArea doesn't know
1229 // about masks
1230 use_bitmap_method = true;
1231 }
1232 else if (is_mono)
1233 {
1234 // we HAVE TO use the direct way for memory dcs
1235 // that are bitmaps because XCopyArea doesn't cope
1236 // with different bit depths
1237 use_bitmap_method = true;
1238 }
1239 else if ((xsrc == 0) && (ysrc == 0) &&
1240 (width == memDC->m_selected.GetWidth()) &&
1241 (height == memDC->m_selected.GetHeight()))
1242 {
1243 // we SHOULD use the direct way if all of the bitmap
1244 // in the memory dc is copied in which case XCopyArea
1245 // wouldn't be able able to boost performace by reducing
1246 // the area to be scaled
1247 use_bitmap_method = true;
1248 }
1249 else
1250 {
1251 use_bitmap_method = false;
1252 }
1253 }
1254
1255 CalcBoundingBox( xdest, ydest );
1256 CalcBoundingBox( xdest + width, ydest + height );
1257
1258 // scale/translate size and position
1259 wxCoord xx = XLOG2DEV(xdest);
1260 wxCoord yy = YLOG2DEV(ydest);
1261
1262 wxCoord ww = XLOG2DEVREL(width);
1263 wxCoord hh = YLOG2DEVREL(height);
1264
1265 // compare to current clipping region
1266 if (!m_currentClippingRegion.IsNull())
1267 {
1268 wxRegion tmp( xx,yy,ww,hh );
1269 tmp.Intersect( m_currentClippingRegion );
1270 if (tmp.IsEmpty())
1271 return true;
1272 }
1273
1274 int old_logical_func = m_logicalFunction;
1275 SetLogicalFunction( logical_func );
1276
1277 if (use_bitmap_method)
1278 {
1279 // scale/translate bitmap size
1280 wxCoord bm_width = memDC->m_selected.GetWidth();
1281 wxCoord bm_height = memDC->m_selected.GetHeight();
1282
1283 // Get clip coords for the bitmap. If we don't
1284 // use wxBitmap::Rescale(), which can clip the
1285 // bitmap, these are the same as the original
1286 // coordinates
1287 wxCoord cx = xx;
1288 wxCoord cy = yy;
1289 wxCoord cw = ww;
1290 wxCoord ch = hh;
1291
1292 // interpret userscale of src too
1293 double xsc,ysc;
1294 memDC->GetUserScale(&xsc,&ysc);
1295 bm_width = (int) (bm_width / xsc);
1296 bm_height = (int) (bm_height / ysc);
1297
1298 wxCoord bm_ww = XLOG2DEVREL( bm_width );
1299 wxCoord bm_hh = YLOG2DEVREL( bm_height );
1300
1301 // Scale bitmap if required
1302 wxBitmap use_bitmap;
1303 if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
1304 {
1305 // This indicates that the blitting code below will get
1306 // a clipped bitmap and therefore needs to move the origin
1307 // accordingly
1308 wxRegion tmp( xx,yy,ww,hh );
1309 tmp.Intersect( m_currentClippingRegion );
1310 tmp.GetBox(cx,cy,cw,ch);
1311
1312 // Scale and clipped bitmap
1313 use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
1314 }
1315 else
1316 {
1317 // Don't scale bitmap
1318 use_bitmap = memDC->m_selected;
1319 }
1320
1321 // apply mask if any
1322 GdkBitmap *mask = (GdkBitmap *) NULL;
1323 if (use_bitmap.GetMask()) mask = use_bitmap.GetMask()->GetBitmap();
1324
1325 GdkBitmap *new_mask = (GdkBitmap*) NULL;
1326
1327 if (useMask && mask)
1328 {
1329 if (!m_currentClippingRegion.IsNull())
1330 {
1331 GdkColor col;
1332 new_mask = gdk_pixmap_new( wxGetRootWindow()->window, bm_ww, bm_hh, 1 );
1333 GdkGC *gc = gdk_gc_new( new_mask );
1334 col.pixel = 0;
1335 gdk_gc_set_foreground( gc, &col );
1336 gdk_gc_set_ts_origin( gc, -xsrcMask, -ysrcMask);
1337 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1338 col.pixel = 0;
1339 gdk_gc_set_background( gc, &col );
1340 col.pixel = 1;
1341 gdk_gc_set_foreground( gc, &col );
1342 gdk_gc_set_clip_region( gc, m_currentClippingRegion.GetRegion() );
1343 // was: gdk_gc_set_clip_origin( gc, -xx, -yy );
1344 gdk_gc_set_clip_origin( gc, -cx, -cy );
1345 gdk_gc_set_fill( gc, GDK_OPAQUE_STIPPLED );
1346 gdk_gc_set_stipple( gc, mask );
1347 gdk_draw_rectangle( new_mask, gc, TRUE, 0, 0, bm_ww, bm_hh );
1348 gdk_gc_unref( gc );
1349 }
1350
1351 if (is_mono)
1352 {
1353 if (new_mask)
1354 {
1355 gdk_gc_set_clip_mask( m_textGC, new_mask );
1356 gdk_gc_set_clip_origin( m_textGC, cx, cy );
1357 }
1358 else
1359 {
1360 gdk_gc_set_clip_mask( m_textGC, mask );
1361 gdk_gc_set_clip_origin( m_textGC, cx-xsrcMask, cy-ysrcMask );
1362 }
1363 }
1364 else
1365 {
1366 if (new_mask)
1367 {
1368 gdk_gc_set_clip_mask( m_penGC, new_mask );
1369 gdk_gc_set_clip_origin( m_penGC, cx, cy );
1370 }
1371 else
1372 {
1373 gdk_gc_set_clip_mask( m_penGC, mask );
1374 gdk_gc_set_clip_origin( m_penGC, cx-xsrcMask, cy-ysrcMask );
1375 }
1376 }
1377 }
1378
1379 // Draw XPixmap or XBitmap, depending on what the wxBitmap contains. For
1380 // drawing a mono-bitmap (XBitmap) we use the current text GC
1381
1382 if (is_mono)
1383 {
1384 // was: gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, xx, yy, ww, hh );
1385 gdk_wx_draw_bitmap( m_window, m_textGC, use_bitmap.GetBitmap(), xsrc, ysrc, cx, cy, cw, ch );
1386 }
1387 else
1388 {
1389 // was: gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, xx, yy, ww, hh );
1390 gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), xsrc, ysrc, cx, cy, cw, ch );
1391 }
1392
1393 // remove mask again if any
1394 if (useMask && mask)
1395 {
1396 if (is_mono)
1397 {
1398 gdk_gc_set_clip_mask( m_textGC, (GdkBitmap *) NULL );
1399 gdk_gc_set_clip_origin( m_textGC, 0, 0 );
1400 if (!m_currentClippingRegion.IsNull())
1401 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
1402 }
1403 else
1404 {
1405 gdk_gc_set_clip_mask( m_penGC, (GdkBitmap *) NULL );
1406 gdk_gc_set_clip_origin( m_penGC, 0, 0 );
1407 if (!m_currentClippingRegion.IsNull())
1408 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
1409 }
1410 }
1411
1412 if (new_mask)
1413 gdk_bitmap_unref( new_mask );
1414 }
1415 else // use_bitmap_method
1416 {
1417 if ((width != ww) || (height != hh))
1418 {
1419 // get clip coords
1420 wxRegion tmp( xx,yy,ww,hh );
1421 tmp.Intersect( m_currentClippingRegion );
1422 wxCoord cx,cy,cw,ch;
1423 tmp.GetBox(cx,cy,cw,ch);
1424
1425 // rescale bitmap
1426 wxBitmap bitmap = memDC->m_selected.Rescale( cx-xx, cy-yy, cw, ch, ww, hh );
1427
1428 // draw scaled bitmap
1429 // was: gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
1430 gdk_draw_pixmap( m_window, m_penGC, bitmap.GetPixmap(), 0, 0, cx, cy, -1, -1 );
1431 }
1432 else
1433 {
1434 // No scaling and not a memory dc with a mask either
1435
1436 // copy including child window contents
1437 gdk_gc_set_subwindow( m_penGC, GDK_INCLUDE_INFERIORS );
1438 gdk_window_copy_area( m_window, m_penGC, xx, yy,
1439 srcDC->GetWindow(),
1440 xsrc, ysrc, width, height );
1441 gdk_gc_set_subwindow( m_penGC, GDK_CLIP_BY_CHILDREN );
1442 }
1443 }
1444
1445 SetLogicalFunction( old_logical_func );
1446
1447 return true;
1448 }
1449
1450 void wxWindowDC::DoDrawText( const wxString &text, wxCoord x, wxCoord y )
1451 {
1452 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1453
1454 if (!m_window) return;
1455
1456 if (text.empty()) return;
1457
1458 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1459
1460 wxCHECK_RET( font, wxT("invalid font") );
1461
1462 x = XLOG2DEV(x);
1463 y = YLOG2DEV(y);
1464
1465 wxCoord width = gdk_string_width( font, text.mbc_str() );
1466 wxCoord height = font->ascent + font->descent;
1467
1468 if ( m_backgroundMode == wxSOLID )
1469 {
1470 gdk_gc_set_foreground( m_textGC, m_textBackgroundColour.GetColor() );
1471 gdk_draw_rectangle( m_window, m_textGC, TRUE, x, y, width, height );
1472 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
1473 }
1474 gdk_draw_string( m_window, font, m_textGC, x, y + font->ascent, text.mbc_str() );
1475
1476 /* CMB 17/7/98: simple underline: ignores scaling and underlying
1477 X font's XA_UNDERLINE_POSITION and XA_UNDERLINE_THICKNESS
1478 properties (see wxXt implementation) */
1479 if (m_font.GetUnderlined())
1480 {
1481 wxCoord ul_y = y + font->ascent;
1482 if (font->descent > 0) ul_y++;
1483 gdk_draw_line( m_window, m_textGC, x, ul_y, x + width, ul_y);
1484 }
1485
1486 width = wxCoord(width / m_scaleX);
1487 height = wxCoord(height / m_scaleY);
1488 CalcBoundingBox (x + width, y + height);
1489 CalcBoundingBox (x, y);
1490 }
1491
1492
1493 // TODO: There is an example of rotating text with GTK2 that would probably be
1494 // a better approach here:
1495 // http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
1496
1497 void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
1498 {
1499 if ( wxIsNullDouble(angle) )
1500 {
1501 DrawText(text, x, y);
1502 return;
1503 }
1504
1505 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1506
1507 if (!m_window) return;
1508
1509 wxCoord w;
1510 wxCoord h;
1511
1512 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1513
1514 wxCHECK_RET( font, wxT("invalid font") );
1515
1516 // the size of the text
1517 w = gdk_string_width( font, text.mbc_str() );
1518 h = font->ascent + font->descent;
1519
1520 // draw the string normally
1521 wxBitmap src(w, h);
1522 wxMemoryDC dc;
1523 dc.SelectObject(src);
1524 dc.SetFont(GetFont());
1525 dc.SetBackground(*wxBLACK_BRUSH);
1526 dc.SetBrush(*wxBLACK_BRUSH);
1527 dc.Clear();
1528 dc.SetTextForeground( *wxWHITE );
1529 dc.DrawText(text, 0, 0);
1530 dc.SelectObject(wxNullBitmap);
1531
1532 // Calculate the size of the rotated bounding box.
1533 double rad = DegToRad(angle);
1534 double dx = cos(rad),
1535 dy = sin(rad);
1536
1537 // the rectngle vertices are counted clockwise with the first one being at
1538 // (0, 0) (or, rather, at (x, y))
1539 double x2 = w*dx,
1540 y2 = -w*dy; // y axis points to the bottom, hence minus
1541 double x4 = h*dy,
1542 y4 = h*dx;
1543 double x3 = x4 + x2,
1544 y3 = y4 + y2;
1545
1546 // calc max and min
1547 wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5),
1548 maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5),
1549 minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5),
1550 minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5);
1551
1552
1553 wxImage image = src.ConvertToImage();
1554
1555 image.ConvertColourToAlpha( m_textForegroundColour.Red(),
1556 m_textForegroundColour.Green(),
1557 m_textForegroundColour.Blue() );
1558 image = image.Rotate( rad, wxPoint(0,0) );
1559
1560 int i_angle = (int) angle;
1561 i_angle = i_angle % 360;
1562 if (i_angle < 0)
1563 i_angle += 360;
1564 int xoffset = 0;
1565 if ((i_angle >= 90.0) && (i_angle < 270.0))
1566 xoffset = image.GetWidth();
1567 int yoffset = 0;
1568 if ((i_angle >= 0.0) && (i_angle < 180.0))
1569 yoffset = image.GetHeight();
1570
1571 if ((i_angle >= 0) && (i_angle < 90))
1572 yoffset -= (int)( cos(rad)*h );
1573 if ((i_angle >= 90) && (i_angle < 180))
1574 xoffset -= (int)( sin(rad)*h );
1575 if ((i_angle >= 180) && (i_angle < 270))
1576 yoffset -= (int)( cos(rad)*h );
1577 if ((i_angle >= 270) && (i_angle < 360))
1578 xoffset -= (int)( sin(rad)*h );
1579
1580 int i_x = x - xoffset;
1581 int i_y = y - yoffset;
1582
1583 src = image;
1584 DoDrawBitmap( src, i_x, i_y, true );
1585
1586
1587 // it would be better to draw with non underlined font and draw the line
1588 // manually here (it would be more straight...)
1589 #if 0
1590 if ( m_font.GetUnderlined() )
1591 {
1592 gdk_draw_line( m_window, m_textGC,
1593 XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent),
1594 XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent));
1595 }
1596 #endif // 0
1597
1598 // update the bounding box
1599 CalcBoundingBox(x + minX, y + minY);
1600 CalcBoundingBox(x + maxX, y + maxY);
1601 }
1602
1603 void wxWindowDC::DoGetTextExtent(const wxString &string,
1604 wxCoord *width, wxCoord *height,
1605 wxCoord *descent, wxCoord *externalLeading,
1606 wxFont *theFont) const
1607 {
1608 if ( width )
1609 *width = 0;
1610 if ( height )
1611 *height = 0;
1612 if ( descent )
1613 *descent = 0;
1614 if ( externalLeading )
1615 *externalLeading = 0;
1616
1617 if (string.empty())
1618 {
1619 return;
1620 }
1621
1622 wxFont fontToUse = m_font;
1623 if (theFont)
1624 fontToUse = *theFont;
1625
1626 GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
1627 if ( !font )
1628 return;
1629
1630 if (width)
1631 *width = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
1632 if (height)
1633 *height = wxCoord((font->ascent + font->descent) / m_scaleY);
1634 if (descent)
1635 *descent = wxCoord(font->descent / m_scaleY);
1636 }
1637
1638 wxCoord wxWindowDC::GetCharWidth() const
1639 {
1640 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1641 wxCHECK_MSG( font, -1, wxT("invalid font") );
1642
1643 return wxCoord(gdk_string_width( font, "H" ) / m_scaleX);
1644 }
1645
1646 wxCoord wxWindowDC::GetCharHeight() const
1647 {
1648 GdkFont *font = m_font.GetInternalFont( m_scaleY );
1649 wxCHECK_MSG( font, -1, wxT("invalid font") );
1650
1651 return wxCoord((font->ascent + font->descent) / m_scaleY);
1652 }
1653
1654 void wxWindowDC::Clear()
1655 {
1656 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1657
1658 if (!m_window) return;
1659
1660 // VZ: the code below results in infinite recursion and crashes when
1661 // dc.Clear() is done from OnPaint() so I disable it for now.
1662 // I don't know what the correct fix is but Clear() surely should not
1663 // reenter OnPaint()!
1664 #if 0
1665 /* - we either are a memory dc or have a window as the
1666 owner. anything else shouldn't happen.
1667 - we don't use gdk_window_clear() as we don't set
1668 the window's background colour anymore. it is too
1669 much pain to keep the DC's and the window's back-
1670 ground colour in synch. */
1671
1672 if (m_owner)
1673 {
1674 m_owner->Clear();
1675 return;
1676 }
1677
1678 if (m_isMemDC)
1679 {
1680 int width,height;
1681 GetSize( &width, &height );
1682 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1683 return;
1684 }
1685 #else // 1
1686 int width,height;
1687 GetSize( &width, &height );
1688 gdk_draw_rectangle( m_window, m_bgGC, TRUE, 0, 0, width, height );
1689 #endif // 0/1
1690 }
1691
1692 void wxWindowDC::SetFont( const wxFont &font )
1693 {
1694 m_font = font;
1695 }
1696
1697 void wxWindowDC::SetPen( const wxPen &pen )
1698 {
1699 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1700
1701 if (m_pen == pen) return;
1702
1703 m_pen = pen;
1704
1705 if (!m_pen.Ok()) return;
1706
1707 if (!m_window) return;
1708
1709 gint width = m_pen.GetWidth();
1710 if (width <= 0)
1711 {
1712 // CMB: if width is non-zero scale it with the dc
1713 width = 1;
1714 }
1715 else
1716 {
1717 // X doesn't allow different width in x and y and so we take
1718 // the average
1719 double w = 0.5 +
1720 ( fabs((double) XLOG2DEVREL(width)) +
1721 fabs((double) YLOG2DEVREL(width)) ) / 2.0;
1722 width = (int)w;
1723 if ( !width )
1724 {
1725 // width can't be 0 or an internal GTK error occurs inside
1726 // gdk_gc_set_dashes() below
1727 width = 1;
1728 }
1729 }
1730
1731 static const wxGTKDash dotted[] = {1, 1};
1732 static const wxGTKDash short_dashed[] = {2, 2};
1733 static const wxGTKDash wxCoord_dashed[] = {2, 4};
1734 static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3};
1735
1736 // We express dash pattern in pen width unit, so we are
1737 // independent of zoom factor and so on...
1738 int req_nb_dash;
1739 const wxGTKDash *req_dash;
1740
1741 GdkLineStyle lineStyle = GDK_LINE_SOLID;
1742 switch (m_pen.GetStyle())
1743 {
1744 case wxUSER_DASH:
1745 {
1746 lineStyle = GDK_LINE_ON_OFF_DASH;
1747 req_nb_dash = m_pen.GetDashCount();
1748 req_dash = (wxGTKDash*)m_pen.GetDash();
1749 break;
1750 }
1751 case wxDOT:
1752 {
1753 lineStyle = GDK_LINE_ON_OFF_DASH;
1754 req_nb_dash = 2;
1755 req_dash = dotted;
1756 break;
1757 }
1758 case wxLONG_DASH:
1759 {
1760 lineStyle = GDK_LINE_ON_OFF_DASH;
1761 req_nb_dash = 2;
1762 req_dash = wxCoord_dashed;
1763 break;
1764 }
1765 case wxSHORT_DASH:
1766 {
1767 lineStyle = GDK_LINE_ON_OFF_DASH;
1768 req_nb_dash = 2;
1769 req_dash = short_dashed;
1770 break;
1771 }
1772 case wxDOT_DASH:
1773 {
1774 // lineStyle = GDK_LINE_DOUBLE_DASH;
1775 lineStyle = GDK_LINE_ON_OFF_DASH;
1776 req_nb_dash = 4;
1777 req_dash = dotted_dashed;
1778 break;
1779 }
1780
1781 case wxTRANSPARENT:
1782 case wxSTIPPLE_MASK_OPAQUE:
1783 case wxSTIPPLE:
1784 case wxSOLID:
1785 default:
1786 {
1787 lineStyle = GDK_LINE_SOLID;
1788 req_dash = (wxGTKDash*)NULL;
1789 req_nb_dash = 0;
1790 break;
1791 }
1792 }
1793
1794 if (req_dash && req_nb_dash)
1795 {
1796 wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash];
1797 if (real_req_dash)
1798 {
1799 for (int i = 0; i < req_nb_dash; i++)
1800 real_req_dash[i] = req_dash[i] * width;
1801 gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash );
1802 delete[] real_req_dash;
1803 }
1804 else
1805 {
1806 // No Memory. We use non-scaled dash pattern...
1807 gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash );
1808 }
1809 }
1810
1811 GdkCapStyle capStyle = GDK_CAP_ROUND;
1812 switch (m_pen.GetCap())
1813 {
1814 case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; }
1815 case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; }
1816 case wxCAP_ROUND:
1817 default:
1818 {
1819 if (width <= 1)
1820 {
1821 width = 0;
1822 capStyle = GDK_CAP_NOT_LAST;
1823 }
1824 else
1825 {
1826 capStyle = GDK_CAP_ROUND;
1827 }
1828 break;
1829 }
1830 }
1831
1832 GdkJoinStyle joinStyle = GDK_JOIN_ROUND;
1833 switch (m_pen.GetJoin())
1834 {
1835 case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; }
1836 case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; }
1837 case wxJOIN_ROUND:
1838 default: { joinStyle = GDK_JOIN_ROUND; break; }
1839 }
1840
1841 gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle );
1842
1843 m_pen.GetColour().CalcPixel( m_cmap );
1844 gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() );
1845 }
1846
1847 void wxWindowDC::SetBrush( const wxBrush &brush )
1848 {
1849 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1850
1851 if (m_brush == brush) return;
1852
1853 m_brush = brush;
1854
1855 if (!m_brush.Ok()) return;
1856
1857 if (!m_window) return;
1858
1859 m_brush.GetColour().CalcPixel( m_cmap );
1860 gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() );
1861
1862 gdk_gc_set_fill( m_brushGC, GDK_SOLID );
1863
1864 if ((m_brush.GetStyle() == wxSTIPPLE) && (m_brush.GetStipple()->Ok()))
1865 {
1866 if (m_brush.GetStipple()->GetPixmap())
1867 {
1868 gdk_gc_set_fill( m_brushGC, GDK_TILED );
1869 gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() );
1870 }
1871 else
1872 {
1873 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1874 gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetBitmap() );
1875 }
1876 }
1877
1878 if ((m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask()))
1879 {
1880 gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED);
1881 gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() );
1882 }
1883
1884 if (m_brush.IsHatch())
1885 {
1886 gdk_gc_set_fill( m_brushGC, GDK_STIPPLED );
1887 int num = m_brush.GetStyle() - wxBDIAGONAL_HATCH;
1888 gdk_gc_set_stipple( m_brushGC, hatches[num] );
1889 }
1890 }
1891
1892 void wxWindowDC::SetBackground( const wxBrush &brush )
1893 {
1894 /* CMB 21/7/98: Added SetBackground. Sets background brush
1895 * for Clear() and bg colour for shapes filled with cross-hatch brush */
1896
1897 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1898
1899 if (m_backgroundBrush == brush) return;
1900
1901 m_backgroundBrush = brush;
1902
1903 if (!m_backgroundBrush.Ok()) return;
1904
1905 if (!m_window) return;
1906
1907 m_backgroundBrush.GetColour().CalcPixel( m_cmap );
1908 gdk_gc_set_background( m_brushGC, m_backgroundBrush.GetColour().GetColor() );
1909 gdk_gc_set_background( m_penGC, m_backgroundBrush.GetColour().GetColor() );
1910 gdk_gc_set_background( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
1911 gdk_gc_set_foreground( m_bgGC, m_backgroundBrush.GetColour().GetColor() );
1912
1913 gdk_gc_set_fill( m_bgGC, GDK_SOLID );
1914
1915 if ((m_backgroundBrush.GetStyle() == wxSTIPPLE) && (m_backgroundBrush.GetStipple()->Ok()))
1916 {
1917 if (m_backgroundBrush.GetStipple()->GetPixmap())
1918 {
1919 gdk_gc_set_fill( m_bgGC, GDK_TILED );
1920 gdk_gc_set_tile( m_bgGC, m_backgroundBrush.GetStipple()->GetPixmap() );
1921 }
1922 else
1923 {
1924 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
1925 gdk_gc_set_stipple( m_bgGC, m_backgroundBrush.GetStipple()->GetBitmap() );
1926 }
1927 }
1928
1929 if (m_backgroundBrush.IsHatch())
1930 {
1931 gdk_gc_set_fill( m_bgGC, GDK_STIPPLED );
1932 int num = m_backgroundBrush.GetStyle() - wxBDIAGONAL_HATCH;
1933 gdk_gc_set_stipple( m_bgGC, hatches[num] );
1934 }
1935 }
1936
1937 void wxWindowDC::SetLogicalFunction( int function )
1938 {
1939 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1940
1941 if (m_logicalFunction == function)
1942 return;
1943
1944 // VZ: shouldn't this be a CHECK?
1945 if (!m_window)
1946 return;
1947
1948 GdkFunction mode;
1949 switch (function)
1950 {
1951 case wxXOR: mode = GDK_XOR; break;
1952 case wxINVERT: mode = GDK_INVERT; break;
1953 case wxOR_REVERSE: mode = GDK_OR_REVERSE; break;
1954 case wxAND_REVERSE: mode = GDK_AND_REVERSE; break;
1955 case wxCLEAR: mode = GDK_CLEAR; break;
1956 case wxSET: mode = GDK_SET; break;
1957 case wxOR_INVERT: mode = GDK_OR_INVERT; break;
1958 case wxAND: mode = GDK_AND; break;
1959 case wxOR: mode = GDK_OR; break;
1960 case wxEQUIV: mode = GDK_EQUIV; break;
1961 case wxNAND: mode = GDK_NAND; break;
1962 case wxAND_INVERT: mode = GDK_AND_INVERT; break;
1963 case wxCOPY: mode = GDK_COPY; break;
1964 case wxNO_OP: mode = GDK_NOOP; break;
1965 case wxSRC_INVERT: mode = GDK_COPY_INVERT; break;
1966
1967 // unsupported by GTK
1968 case wxNOR: mode = GDK_COPY; break;
1969 default:
1970 wxFAIL_MSG( wxT("unsupported logical function") );
1971 mode = GDK_COPY;
1972 }
1973
1974 m_logicalFunction = function;
1975
1976 gdk_gc_set_function( m_penGC, mode );
1977 gdk_gc_set_function( m_brushGC, mode );
1978
1979 // to stay compatible with wxMSW, we don't apply ROPs to the text
1980 // operations (i.e. DrawText/DrawRotatedText).
1981 // True, but mono-bitmaps use the m_textGC and they use ROPs as well.
1982 gdk_gc_set_function( m_textGC, mode );
1983 }
1984
1985 void wxWindowDC::SetTextForeground( const wxColour &col )
1986 {
1987 wxCHECK_RET( Ok(), wxT("invalid window dc") );
1988
1989 // don't set m_textForegroundColour to an invalid colour as we'd crash
1990 // later then (we use m_textForegroundColour.GetColor() without checking
1991 // in a few places)
1992 if ( !col.Ok() || (m_textForegroundColour == col) )
1993 return;
1994
1995 m_textForegroundColour = col;
1996
1997 if ( m_window )
1998 {
1999 m_textForegroundColour.CalcPixel( m_cmap );
2000 gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() );
2001 }
2002 }
2003
2004 void wxWindowDC::SetTextBackground( const wxColour &col )
2005 {
2006 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2007
2008 // same as above
2009 if ( !col.Ok() || (m_textBackgroundColour == col) )
2010 return;
2011
2012 m_textBackgroundColour = col;
2013
2014 if ( m_window )
2015 {
2016 m_textBackgroundColour.CalcPixel( m_cmap );
2017 gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() );
2018 }
2019 }
2020
2021 void wxWindowDC::SetBackgroundMode( int mode )
2022 {
2023 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2024
2025 m_backgroundMode = mode;
2026
2027 if (!m_window) return;
2028
2029 // CMB 21/7/98: fill style of cross-hatch brushes is affected by
2030 // transparent/solid background mode
2031
2032 if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
2033 {
2034 gdk_gc_set_fill( m_brushGC,
2035 (m_backgroundMode == wxTRANSPARENT) ? GDK_STIPPLED : GDK_OPAQUE_STIPPLED);
2036 }
2037 }
2038
2039 void wxWindowDC::SetPalette( const wxPalette& WXUNUSED(palette) )
2040 {
2041 wxFAIL_MSG( wxT("wxWindowDC::SetPalette not implemented") );
2042 }
2043
2044 void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
2045 {
2046 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2047
2048 if (!m_window) return;
2049
2050 wxRect rect;
2051 rect.x = XLOG2DEV(x);
2052 rect.y = YLOG2DEV(y);
2053 rect.width = XLOG2DEVREL(width);
2054 rect.height = YLOG2DEVREL(height);
2055
2056 if (!m_currentClippingRegion.IsNull())
2057 m_currentClippingRegion.Intersect( rect );
2058 else
2059 m_currentClippingRegion.Union( rect );
2060
2061 #if USE_PAINT_REGION
2062 if (!m_paintClippingRegion.IsNull())
2063 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2064 #endif
2065
2066 wxCoord xx, yy, ww, hh;
2067 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2068 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2069
2070 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2071 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2072 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2073 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2074 }
2075
2076 void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion &region )
2077 {
2078 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2079
2080 if (region.Empty())
2081 {
2082 DestroyClippingRegion();
2083 return;
2084 }
2085
2086 if (!m_window) return;
2087
2088 if (!m_currentClippingRegion.IsNull())
2089 m_currentClippingRegion.Intersect( region );
2090 else
2091 m_currentClippingRegion.Union( region );
2092
2093 #if USE_PAINT_REGION
2094 if (!m_paintClippingRegion.IsNull())
2095 m_currentClippingRegion.Intersect( m_paintClippingRegion );
2096 #endif
2097
2098 wxCoord xx, yy, ww, hh;
2099 m_currentClippingRegion.GetBox( xx, yy, ww, hh );
2100 wxDC::DoSetClippingRegion( xx, yy, ww, hh );
2101
2102 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2103 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2104 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2105 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2106 }
2107
2108 void wxWindowDC::DestroyClippingRegion()
2109 {
2110 wxCHECK_RET( Ok(), wxT("invalid window dc") );
2111
2112 wxDC::DestroyClippingRegion();
2113
2114 m_currentClippingRegion.Clear();
2115
2116 #if USE_PAINT_REGION
2117 if (!m_paintClippingRegion.IsEmpty())
2118 m_currentClippingRegion.Union( m_paintClippingRegion );
2119 #endif
2120
2121 if (!m_window) return;
2122
2123 if (m_currentClippingRegion.IsEmpty())
2124 {
2125 gdk_gc_set_clip_rectangle( m_penGC, (GdkRectangle *) NULL );
2126 gdk_gc_set_clip_rectangle( m_brushGC, (GdkRectangle *) NULL );
2127 gdk_gc_set_clip_rectangle( m_textGC, (GdkRectangle *) NULL );
2128 gdk_gc_set_clip_rectangle( m_bgGC, (GdkRectangle *) NULL );
2129 }
2130 else
2131 {
2132 gdk_gc_set_clip_region( m_penGC, m_currentClippingRegion.GetRegion() );
2133 gdk_gc_set_clip_region( m_brushGC, m_currentClippingRegion.GetRegion() );
2134 gdk_gc_set_clip_region( m_textGC, m_currentClippingRegion.GetRegion() );
2135 gdk_gc_set_clip_region( m_bgGC, m_currentClippingRegion.GetRegion() );
2136 }
2137 }
2138
2139 void wxWindowDC::Destroy()
2140 {
2141 if (m_penGC) wxFreePoolGC( m_penGC );
2142 m_penGC = (GdkGC*) NULL;
2143 if (m_brushGC) wxFreePoolGC( m_brushGC );
2144 m_brushGC = (GdkGC*) NULL;
2145 if (m_textGC) wxFreePoolGC( m_textGC );
2146 m_textGC = (GdkGC*) NULL;
2147 if (m_bgGC) wxFreePoolGC( m_bgGC );
2148 m_bgGC = (GdkGC*) NULL;
2149 }
2150
2151 void wxWindowDC::ComputeScaleAndOrigin()
2152 {
2153 const wxRealPoint origScale(m_scaleX, m_scaleY);
2154
2155 wxDC::ComputeScaleAndOrigin();
2156
2157 // if scale has changed call SetPen to recalulate the line width
2158 if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.Ok() )
2159 {
2160 // this is a bit artificial, but we need to force wxDC to think the pen
2161 // has changed
2162 wxPen pen = m_pen;
2163 m_pen = wxNullPen;
2164 SetPen( pen );
2165 }
2166 }
2167
2168 // Resolution in pixels per logical inch
2169 wxSize wxWindowDC::GetPPI() const
2170 {
2171 return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5));
2172 }
2173
2174 int wxWindowDC::GetDepth() const
2175 {
2176 wxFAIL_MSG(wxT("not implemented"));
2177
2178 return -1;
2179 }
2180
2181
2182 //-----------------------------------------------------------------------------
2183 // wxPaintDC
2184 //-----------------------------------------------------------------------------
2185
2186 IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
2187
2188 // Limit the paint region to the window size. Sometimes
2189 // the paint region is too big, and this risks X11 errors
2190 static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz)
2191 {
2192 wxRect originalRect = region.GetBox();
2193 wxRect rect(originalRect);
2194 if (rect.width + rect.x > sz.x)
2195 rect.width = sz.x - rect.x;
2196 if (rect.height + rect.y > sz.y)
2197 rect.height = sz.y - rect.y;
2198 if (rect != originalRect)
2199 {
2200 region = wxRegion(rect);
2201 wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"),
2202 originalRect.x, originalRect.y, originalRect.width, originalRect.height,
2203 rect.x, rect.y, rect.width, rect.height);
2204 }
2205 }
2206
2207 wxPaintDC::wxPaintDC( wxWindow *win )
2208 : wxClientDC( win )
2209 {
2210 #if USE_PAINT_REGION
2211 if (!win->m_clipPaintRegion)
2212 return;
2213
2214 wxSize sz = win->GetSize();
2215 m_paintClippingRegion = win->GetUpdateRegion();
2216 wxLimitRegionToSize(m_paintClippingRegion, sz);
2217
2218 GdkRegion *region = m_paintClippingRegion.GetRegion();
2219 if ( region )
2220 {
2221 m_currentClippingRegion.Union( m_paintClippingRegion );
2222 wxLimitRegionToSize(m_currentClippingRegion, sz);
2223
2224 if (sz.x <= 0 || sz.y <= 0)
2225 return ;
2226
2227 gdk_gc_set_clip_region( m_penGC, region );
2228 gdk_gc_set_clip_region( m_brushGC, region );
2229 gdk_gc_set_clip_region( m_textGC, region );
2230 gdk_gc_set_clip_region( m_bgGC, region );
2231 }
2232 #endif // USE_PAINT_REGION
2233 }
2234
2235 //-----------------------------------------------------------------------------
2236 // wxClientDC
2237 //-----------------------------------------------------------------------------
2238
2239 IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC)
2240
2241 wxClientDC::wxClientDC( wxWindow *win )
2242 : wxWindowDC( win )
2243 {
2244 wxCHECK_RET( win, _T("NULL window in wxClientDC::wxClientDC") );
2245
2246 #ifdef __WXUNIVERSAL__
2247 wxPoint ptOrigin = win->GetClientAreaOrigin();
2248 SetDeviceOrigin(ptOrigin.x, ptOrigin.y);
2249 wxSize size = win->GetClientSize();
2250 SetClippingRegion(wxPoint(0, 0), size);
2251 #endif // __WXUNIVERSAL__
2252 }
2253
2254 void wxClientDC::DoGetSize(int *width, int *height) const
2255 {
2256 wxCHECK_RET( m_owner, _T("GetSize() doesn't work without window") );
2257
2258 m_owner->GetClientSize( width, height );
2259 }
2260
2261 // ----------------------------------------------------------------------------
2262 // wxDCModule
2263 // ----------------------------------------------------------------------------
2264
2265 class wxDCModule : public wxModule
2266 {
2267 public:
2268 bool OnInit();
2269 void OnExit();
2270
2271 private:
2272 DECLARE_DYNAMIC_CLASS(wxDCModule)
2273 };
2274
2275 IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
2276
2277 bool wxDCModule::OnInit()
2278 {
2279 wxInitGCPool();
2280 return true;
2281 }
2282
2283 void wxDCModule::OnExit()
2284 {
2285 wxCleanUpGCPool();
2286 }
wxWidgets (Impactor)