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1/////////////////////////////////////////////////////////////////////////////
2// Name: bitmap.cpp
3// Purpose:
4// Author: Robert Roebling
5// RCS-ID: $Id$
6// Copyright: (c) 1998 Robert Roebling
7// Licence: wxWindows licence
8/////////////////////////////////////////////////////////////////////////////
9
10#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
11#pragma implementation "bitmap.h"
12#endif
13
14// For compilers that support precompilation, includes "wx.h".
15#include "wx/wxprec.h"
16
17#include "wx/defs.h"
18
19#include "wx/palette.h"
20#include "wx/bitmap.h"
21#include "wx/icon.h"
22#include "wx/filefn.h"
23#include "wx/image.h"
24#include "wx/dcmemory.h"
25#include "wx/app.h"
26
27#ifdef __WXGTK20__
28 // need this to get gdk_image_new_bitmap()
29 #define GDK_ENABLE_BROKEN
30#endif
31
32#include <gdk/gdk.h>
33#include <gtk/gtk.h>
34#include <gdk/gdkx.h>
35
36#ifdef __WXGTK20__
37 #include <gdk/gdkimage.h>
38#else // GTK+ 1.2
39 #include <gdk/gdkrgb.h>
40#endif // GTK+ 2.0/1.2
41
42#include <math.h>
43
44extern void gdk_wx_draw_bitmap (GdkDrawable *drawable,
45 GdkGC *gc,
46 GdkDrawable *src,
47 gint xsrc,
48 gint ysrc,
49 gint xdest,
50 gint ydest,
51 gint width,
52 gint height);
53
54//-----------------------------------------------------------------------------
55// data
56//-----------------------------------------------------------------------------
57
58extern GtkWidget *wxGetRootWindow();
59
60//-----------------------------------------------------------------------------
61// wxMask
62//-----------------------------------------------------------------------------
63
64IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
65
66wxMask::wxMask()
67{
68 m_bitmap = (GdkBitmap *) NULL;
69}
70
71wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
72{
73 m_bitmap = (GdkBitmap *) NULL;
74 Create( bitmap, colour );
75}
76
77wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
78{
79 m_bitmap = (GdkBitmap *) NULL;
80 Create( bitmap, paletteIndex );
81}
82
83wxMask::wxMask( const wxBitmap& bitmap )
84{
85 m_bitmap = (GdkBitmap *) NULL;
86 Create( bitmap );
87}
88
89wxMask::~wxMask()
90{
91 if (m_bitmap)
92 gdk_bitmap_unref( m_bitmap );
93}
94
95bool wxMask::Create( const wxBitmap& bitmap,
96 const wxColour& colour )
97{
98 if (m_bitmap)
99 {
100 gdk_bitmap_unref( m_bitmap );
101 m_bitmap = (GdkBitmap*) NULL;
102 }
103
104 wxImage image = bitmap.ConvertToImage();
105 if (!image.Ok()) return FALSE;
106
107 m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, image.GetWidth(), image.GetHeight(), 1 );
108 GdkGC *gc = gdk_gc_new( m_bitmap );
109
110 GdkColor color;
111 color.red = 65000;
112 color.green = 65000;
113 color.blue = 65000;
114 color.pixel = 1;
115 gdk_gc_set_foreground( gc, &color );
116 gdk_gc_set_fill( gc, GDK_SOLID );
117 gdk_draw_rectangle( m_bitmap, gc, TRUE, 0, 0, image.GetWidth(), image.GetHeight() );
118
119 unsigned char *data = image.GetData();
120 int index = 0;
121
122 unsigned char red = colour.Red();
123 unsigned char green = colour.Green();
124 unsigned char blue = colour.Blue();
125
126 GdkVisual *visual = wxTheApp->GetGdkVisual();
127
128 int bpp = visual->depth;
129 if ((bpp == 16) && (visual->red_mask != 0xf800))
130 bpp = 15;
131 if (bpp == 15)
132 {
133 red = red & 0xf8;
134 green = green & 0xf8;
135 blue = blue & 0xf8;
136 }
137 else if (bpp == 16)
138 {
139 red = red & 0xf8;
140 green = green & 0xfc;
141 blue = blue & 0xf8;
142 }
143 else if (bpp == 12)
144 {
145 red = red & 0xf0;
146 green = green & 0xf0;
147 blue = blue & 0xf0;
148 }
149
150 color.red = 0;
151 color.green = 0;
152 color.blue = 0;
153 color.pixel = 0;
154 gdk_gc_set_foreground( gc, &color );
155
156 for (int j = 0; j < image.GetHeight(); j++)
157 {
158 int start_x = -1;
159 int i;
160 for (i = 0; i < image.GetWidth(); i++)
161 {
162 if ((data[index] == red) &&
163 (data[index+1] == green) &&
164 (data[index+2] == blue))
165 {
166 if (start_x == -1)
167 start_x = i;
168 }
169 else
170 {
171 if (start_x != -1)
172 {
173 gdk_draw_line( m_bitmap, gc, start_x, j, i-1, j );
174 start_x = -1;
175 }
176 }
177 index += 3;
178 }
179 if (start_x != -1)
180 gdk_draw_line( m_bitmap, gc, start_x, j, i, j );
181 }
182
183 gdk_gc_unref( gc );
184
185 return TRUE;
186}
187
188bool wxMask::Create( const wxBitmap& bitmap, int paletteIndex )
189{
190 unsigned char r,g,b;
191 wxPalette *pal = bitmap.GetPalette();
192
193 wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
194
195 pal->GetRGB(paletteIndex, &r, &g, &b);
196
197 return Create(bitmap, wxColour(r, g, b));
198}
199
200bool wxMask::Create( const wxBitmap& bitmap )
201{
202 if (m_bitmap)
203 {
204 gdk_bitmap_unref( m_bitmap );
205 m_bitmap = (GdkBitmap*) NULL;
206 }
207
208 if (!bitmap.Ok()) return FALSE;
209
210 wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
211
212 m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
213
214 if (!m_bitmap) return FALSE;
215
216 GdkGC *gc = gdk_gc_new( m_bitmap );
217
218 gdk_wx_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
219
220 gdk_gc_unref( gc );
221
222 return TRUE;
223}
224
225GdkBitmap *wxMask::GetBitmap() const
226{
227 return m_bitmap;
228}
229
230//-----------------------------------------------------------------------------
231// wxBitmap
232//-----------------------------------------------------------------------------
233
234class wxBitmapRefData: public wxObjectRefData
235{
236public:
237 wxBitmapRefData();
238 ~wxBitmapRefData();
239
240 GdkPixmap *m_pixmap;
241 GdkBitmap *m_bitmap;
242 wxMask *m_mask;
243 int m_width;
244 int m_height;
245 int m_bpp;
246 wxPalette *m_palette;
247};
248
249wxBitmapRefData::wxBitmapRefData()
250{
251 m_pixmap = (GdkPixmap *) NULL;
252 m_bitmap = (GdkBitmap *) NULL;
253 m_mask = (wxMask *) NULL;
254 m_width = 0;
255 m_height = 0;
256 m_bpp = 0;
257 m_palette = (wxPalette *) NULL;
258}
259
260wxBitmapRefData::~wxBitmapRefData()
261{
262 if (m_pixmap)
263 gdk_pixmap_unref( m_pixmap );
264 if (m_bitmap)
265 gdk_bitmap_unref( m_bitmap );
266 delete m_mask;
267 delete m_palette;
268}
269
270//-----------------------------------------------------------------------------
271
272#define M_BMPDATA ((wxBitmapRefData *)m_refData)
273
274IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
275
276wxBitmap::wxBitmap()
277{
278}
279
280wxBitmap::wxBitmap( int width, int height, int depth )
281{
282 Create( width, height, depth );
283}
284
285bool wxBitmap::Create( int width, int height, int depth )
286{
287 UnRef();
288
289 if ( width <= 0 || height <= 0 )
290 {
291 return false;
292 }
293
294 GdkVisual *visual = wxTheApp->GetGdkVisual();
295
296 if (depth == -1)
297 depth = visual->depth;
298
299 wxCHECK_MSG( (depth == visual->depth) || (depth == 1), FALSE,
300 wxT("invalid bitmap depth") )
301
302 m_refData = new wxBitmapRefData();
303 M_BMPDATA->m_mask = (wxMask *) NULL;
304 M_BMPDATA->m_width = width;
305 M_BMPDATA->m_height = height;
306 if (depth == 1)
307 {
308 M_BMPDATA->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
309 M_BMPDATA->m_bpp = 1;
310 }
311 else
312 {
313 M_BMPDATA->m_pixmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, depth );
314 M_BMPDATA->m_bpp = visual->depth;
315 }
316
317 return Ok();
318}
319
320bool wxBitmap::CreateFromXpm( const char **bits )
321{
322 UnRef();
323
324 wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
325
326 GdkVisual *visual = wxTheApp->GetGdkVisual();
327
328 m_refData = new wxBitmapRefData();
329
330 GdkBitmap *mask = (GdkBitmap*) NULL;
331
332 M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( wxGetRootWindow()->window, &mask, NULL, (gchar **) bits );
333
334 wxCHECK_MSG( M_BMPDATA->m_pixmap, FALSE, wxT("couldn't create pixmap") );
335
336 if (mask)
337 {
338 M_BMPDATA->m_mask = new wxMask();
339 M_BMPDATA->m_mask->m_bitmap = mask;
340 }
341
342 gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
343
344 M_BMPDATA->m_bpp = visual->depth; // Can we get a different depth from create_from_xpm_d() ?
345
346 return TRUE;
347}
348
349wxBitmap wxBitmap::Rescale( int clipx, int clipy, int clipwidth, int clipheight, int newx, int newy )
350{
351 wxCHECK_MSG( Ok(), wxNullBitmap, wxT("invalid bitmap") );
352
353 if (newy==M_BMPDATA->m_width && newy==M_BMPDATA->m_height)
354 return *this;
355
356 GdkImage *img = (GdkImage*) NULL;
357 if (GetPixmap())
358 img = gdk_image_get( GetPixmap(), 0, 0, GetWidth(), GetHeight() );
359 else if (GetBitmap())
360 img = gdk_image_get( GetBitmap(), 0, 0, GetWidth(), GetHeight() );
361 else
362 wxFAIL_MSG( wxT("Ill-formed bitmap") );
363
364 wxCHECK_MSG( img, wxNullBitmap, wxT("couldn't create image") );
365
366 wxBitmap bmp;
367 int bpp = -1;
368
369 int width = wxMax(newx, 1);
370 int height = wxMax(newy, 1);
371 width = wxMin(width, clipwidth);
372 height = wxMin(height, clipheight);
373
374 GdkGC *gc = NULL;
375 GdkPixmap *dstpix = NULL;
376 if (GetPixmap())
377 {
378 GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
379 if (visual == NULL)
380 visual = wxTheApp->GetGdkVisual();
381
382 bpp = visual->depth;
383 bmp = wxBitmap(width,height,bpp);
384 dstpix = bmp.GetPixmap();
385 gc = gdk_gc_new( dstpix );
386 }
387
388 char *dst = NULL;
389 long dstbyteperline = 0;
390
391 if (GetBitmap())
392 {
393 bpp = 1;
394 dstbyteperline = width/8*M_BMPDATA->m_bpp;
395 if (width*M_BMPDATA->m_bpp % 8 != 0)
396 dstbyteperline++;
397 dst = (char*) malloc(dstbyteperline*height);
398 }
399
400 // be careful to use the right scaling factor
401 float scx = (float)M_BMPDATA->m_width/(float)newx;
402 float scy = (float)M_BMPDATA->m_height/(float)newy;
403 // prepare accel-tables
404 int *tablex = (int *)calloc(width,sizeof(int));
405 int *tabley = (int *)calloc(height,sizeof(int));
406
407 // accel table filled with clipped values
408 for (int x = 0; x < width; x++)
409 tablex[x] = (int) (scx * (x+clipx));
410 for (int y = 0; y < height; y++)
411 tabley[y] = (int) (scy * (y+clipy));
412
413 // Main rescaling routine starts here
414 for (int h = 0; h < height; h++)
415 {
416 char outbyte = 0;
417
418 for (int w=0; w<width; w++)
419 {
420 guint32 pixval = gdk_image_get_pixel( img, tablex[w], tabley[h] );
421 if (bpp==1)
422 {
423 if (!pixval)
424 {
425 char bit=1;
426 char shift = bit << w % 8;
427 outbyte |= shift;
428 }
429
430 if ((w+1)%8==0)
431 {
432 dst[h*dstbyteperline+w/8]=~outbyte;
433 outbyte = 0;
434 }
435 }
436 else
437 {
438 GdkColor col;
439 col.pixel = pixval;
440 gdk_gc_set_foreground( gc, &col );
441 gdk_draw_point( dstpix, gc, w, h);
442 }
443 }
444
445 // do not forget the last byte
446 if (bpp == 1)
447 dst[h*dstbyteperline+width/8] = ~outbyte;
448 }
449
450 gdk_image_destroy( img );
451 if (gc) gdk_gc_unref( gc );
452
453 if (bpp == 1)
454 {
455 bmp = wxBitmap( (const char *)dst, width, height, 1 );
456 free( dst );
457 }
458
459 if (GetMask())
460 {
461 bpp = 1;
462 dstbyteperline = width/8*bpp;
463 if (width*bpp % 8 != 0)
464 dstbyteperline++;
465 dst = (char*) malloc(dstbyteperline*height);
466 img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
467
468 for (int h = 0; h < height; h++)
469 {
470 char outbyte = 0;
471
472 for (int w=0; w<width; w++)
473 {
474 guint32 pixval = gdk_image_get_pixel( img, tablex[w], tabley[h] );
475 if (pixval)
476 {
477 char bit=1;
478 char shift = bit << w % 8;
479 outbyte |= shift;
480 }
481
482 if ((w+1)%8==0)
483 {
484 dst[h*dstbyteperline+w/8]=~outbyte;
485 outbyte = 0;
486 }
487 }
488
489 // do not forget the last byte
490 if (bpp == 1)
491 dst[h*dstbyteperline+width/8] = ~outbyte;
492 }
493
494 wxBitmap mask_bmp( (const char *)dst, width, height, 1 );
495 wxMask* mask = new wxMask(mask_bmp);
496 bmp.SetMask(mask);
497
498 free( dst );
499 gdk_image_destroy( img );
500 }
501
502 free( tablex );
503 free( tabley );
504
505 return bmp;
506}
507
508bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
509{
510 UnRef();
511
512 wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
513 wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
514
515 int width = image.GetWidth();
516 int height = image.GetHeight();
517
518 if ( width <= 0 || height <= 0 )
519 {
520 return false;
521 }
522
523 m_refData = new wxBitmapRefData();
524
525 SetHeight( height );
526 SetWidth( width );
527
528 // ------
529 // conversion to mono bitmap:
530 // ------
531 if (depth == 1)
532 {
533 SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
534
535 SetDepth( 1 );
536
537 GdkVisual *visual = wxTheApp->GetGdkVisual();
538
539 // Create picture image
540
541 unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
542
543 GdkImage *data_image =
544 gdk_image_new_bitmap( visual, data_data, width, height );
545
546 // Create mask image
547
548 GdkImage *mask_image = (GdkImage*) NULL;
549
550 if (image.HasMask())
551 {
552 unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
553
554 mask_image = gdk_image_new_bitmap( visual, mask_data, width, height );
555
556 wxMask *mask = new wxMask();
557 mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
558
559 SetMask( mask );
560 }
561
562 int r_mask = image.GetMaskRed();
563 int g_mask = image.GetMaskGreen();
564 int b_mask = image.GetMaskBlue();
565
566 unsigned char* data = image.GetData();
567
568 int index = 0;
569 for (int y = 0; y < height; y++)
570 {
571 for (int x = 0; x < width; x++)
572 {
573 int r = data[index];
574 index++;
575 int g = data[index];
576 index++;
577 int b = data[index];
578 index++;
579
580 if (image.HasMask())
581 {
582 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
583 gdk_image_put_pixel( mask_image, x, y, 1 );
584 else
585 gdk_image_put_pixel( mask_image, x, y, 0 );
586 }
587
588 if ((r == 255) && (b == 255) && (g == 255))
589 gdk_image_put_pixel( data_image, x, y, 1 );
590 else
591 gdk_image_put_pixel( data_image, x, y, 0 );
592
593 } // for
594 } // for
595
596 // Blit picture
597
598 GdkGC *data_gc = gdk_gc_new( GetBitmap() );
599
600 gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
601
602 gdk_image_destroy( data_image );
603 gdk_gc_unref( data_gc );
604
605 // Blit mask
606
607 if (image.HasMask())
608 {
609 GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
610
611 gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
612
613 gdk_image_destroy( mask_image );
614 gdk_gc_unref( mask_gc );
615 }
616 }
617
618 // ------
619 // conversion to colour bitmap:
620 // ------
621 else
622 {
623 SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
624
625 GdkVisual *visual = wxTheApp->GetGdkVisual();
626
627 int bpp = visual->depth;
628
629 SetDepth( bpp );
630
631 if ((bpp == 16) && (visual->red_mask != 0xf800))
632 bpp = 15;
633 else if (bpp < 8)
634 bpp = 8;
635
636 // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
637 // visuals are not supported by GDK so we do these ourselves, too.
638 // 15-bit and 16-bit should actually work and 24-bit certainly does.
639#ifdef __sgi
640 if (!image.HasMask() && (bpp > 16))
641#else
642 if (!image.HasMask() && (bpp > 12))
643#endif
644 {
645 static bool s_hasInitialized = FALSE;
646
647 if (!s_hasInitialized)
648 {
649 gdk_rgb_init();
650 s_hasInitialized = TRUE;
651 }
652
653 GdkGC *gc = gdk_gc_new( GetPixmap() );
654
655 gdk_draw_rgb_image( GetPixmap(),
656 gc,
657 0, 0,
658 width, height,
659 GDK_RGB_DITHER_NONE,
660 image.GetData(),
661 width*3 );
662
663 gdk_gc_unref( gc );
664 return TRUE;
665 }
666
667 // Create picture image
668
669 GdkImage *data_image =
670 gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
671
672 // Create mask image
673
674 GdkImage *mask_image = (GdkImage*) NULL;
675
676 if (image.HasMask())
677 {
678 unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
679
680 mask_image = gdk_image_new_bitmap( visual, mask_data, width, height );
681
682 wxMask *mask = new wxMask();
683 mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
684
685 SetMask( mask );
686 }
687
688 // Render
689
690 enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
691 byte_order b_o = RGB;
692
693 if (bpp > 8)
694 {
695 if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask)) b_o = RGB;
696 else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask)) b_o = RBG;
697 else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask)) b_o = BRG;
698 else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
699 else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask)) b_o = GRB;
700 else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask)) b_o = GBR;
701 }
702
703 int r_mask = image.GetMaskRed();
704 int g_mask = image.GetMaskGreen();
705 int b_mask = image.GetMaskBlue();
706
707 unsigned char* data = image.GetData();
708
709 int index = 0;
710 for (int y = 0; y < height; y++)
711 {
712 for (int x = 0; x < width; x++)
713 {
714 int r = data[index];
715 index++;
716 int g = data[index];
717 index++;
718 int b = data[index];
719 index++;
720
721 if (image.HasMask())
722 {
723 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
724 gdk_image_put_pixel( mask_image, x, y, 1 );
725 else
726 gdk_image_put_pixel( mask_image, x, y, 0 );
727 }
728
729 switch (bpp)
730 {
731 case 8:
732 {
733 int pixel = -1;
734 if (wxTheApp->m_colorCube)
735 {
736 pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
737 }
738 else
739 {
740 GdkColormap *cmap = gtk_widget_get_default_colormap();
741 GdkColor *colors = cmap->colors;
742 int max = 3 * (65536);
743
744 for (int i = 0; i < cmap->size; i++)
745 {
746 int rdiff = (r << 8) - colors[i].red;
747 int gdiff = (g << 8) - colors[i].green;
748 int bdiff = (b << 8) - colors[i].blue;
749 int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
750 if (sum < max) { pixel = i; max = sum; }
751 }
752 }
753
754 gdk_image_put_pixel( data_image, x, y, pixel );
755
756 break;
757 }
758 case 12: // SGI only
759 {
760 guint32 pixel = 0;
761 switch (b_o)
762 {
763 case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
764 case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
765 case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
766 case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
767 case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
768 case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
769 }
770 gdk_image_put_pixel( data_image, x, y, pixel );
771 break;
772 }
773 case 15:
774 {
775 guint32 pixel = 0;
776 switch (b_o)
777 {
778 case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
779 case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
780 case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
781 case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
782 case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
783 case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
784 }
785 gdk_image_put_pixel( data_image, x, y, pixel );
786 break;
787 }
788 case 16:
789 {
790 // I actually don't know if for 16-bit displays, it is alway the green
791 // component or the second component which has 6 bits.
792 guint32 pixel = 0;
793 switch (b_o)
794 {
795 case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
796 case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
797 case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
798 case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
799 case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
800 case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
801 }
802 gdk_image_put_pixel( data_image, x, y, pixel );
803 break;
804 }
805 case 32:
806 case 24:
807 {
808 guint32 pixel = 0;
809 switch (b_o)
810 {
811 case RGB: pixel = (r << 16) | (g << 8) | b; break;
812 case RBG: pixel = (r << 16) | (b << 8) | g; break;
813 case BRG: pixel = (b << 16) | (r << 8) | g; break;
814 case BGR: pixel = (b << 16) | (g << 8) | r; break;
815 case GRB: pixel = (g << 16) | (r << 8) | b; break;
816 case GBR: pixel = (g << 16) | (b << 8) | r; break;
817 }
818 gdk_image_put_pixel( data_image, x, y, pixel );
819 }
820 default: break;
821 }
822 } // for
823 } // for
824
825 // Blit picture
826
827 GdkGC *data_gc = gdk_gc_new( GetPixmap() );
828
829 gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
830
831 gdk_image_destroy( data_image );
832 gdk_gc_unref( data_gc );
833
834 // Blit mask
835
836 if (image.HasMask())
837 {
838 GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
839
840 gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
841
842 gdk_image_destroy( mask_image );
843 gdk_gc_unref( mask_gc );
844 }
845 }
846
847 return TRUE;
848}
849
850wxImage wxBitmap::ConvertToImage() const
851{
852 // the colour used as transparent one in wxImage and the one it is replaced
853 // with when it really occurs in the bitmap
854 static const int MASK_RED = 1;
855 static const int MASK_GREEN = 2;
856 static const int MASK_BLUE = 3;
857 static const int MASK_BLUE_REPLACEMENT = 2;
858
859 wxImage image;
860
861 wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
862
863 GdkImage *gdk_image = (GdkImage*) NULL;
864 if (GetPixmap())
865 {
866 gdk_image = gdk_image_get( GetPixmap(),
867 0, 0,
868 GetWidth(), GetHeight() );
869 }
870 else if (GetBitmap())
871 {
872 gdk_image = gdk_image_get( GetBitmap(),
873 0, 0,
874 GetWidth(), GetHeight() );
875 }
876 else
877 {
878 wxFAIL_MSG( wxT("Ill-formed bitmap") );
879 }
880
881 wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
882
883 image.Create( GetWidth(), GetHeight() );
884 char unsigned *data = image.GetData();
885
886 if (!data)
887 {
888 gdk_image_destroy( gdk_image );
889 wxFAIL_MSG( wxT("couldn't create image") );
890 return wxNullImage;
891 }
892
893 GdkImage *gdk_image_mask = (GdkImage*) NULL;
894 if (GetMask())
895 {
896 gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
897 0, 0,
898 GetWidth(), GetHeight() );
899
900 image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
901 }
902
903 int bpp = -1;
904 int red_shift_right = 0;
905 int green_shift_right = 0;
906 int blue_shift_right = 0;
907 int red_shift_left = 0;
908 int green_shift_left = 0;
909 int blue_shift_left = 0;
910 bool use_shift = FALSE;
911
912 if (GetPixmap())
913 {
914 GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
915 if (visual == NULL)
916 visual = wxTheApp->GetGdkVisual();
917
918 bpp = visual->depth;
919 if (bpp == 16)
920 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
921 red_shift_right = visual->red_shift;
922 red_shift_left = 8-visual->red_prec;
923 green_shift_right = visual->green_shift;
924 green_shift_left = 8-visual->green_prec;
925 blue_shift_right = visual->blue_shift;
926 blue_shift_left = 8-visual->blue_prec;
927
928 use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
929 }
930 if (GetBitmap())
931 {
932 bpp = 1;
933 }
934
935
936 GdkColormap *cmap = gtk_widget_get_default_colormap();
937
938 long pos = 0;
939 for (int j = 0; j < GetHeight(); j++)
940 {
941 for (int i = 0; i < GetWidth(); i++)
942 {
943 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
944 if (bpp == 1)
945 {
946 if (pixel == 0)
947 {
948 data[pos] = 0;
949 data[pos+1] = 0;
950 data[pos+2] = 0;
951 }
952 else
953 {
954 data[pos] = 255;
955 data[pos+1] = 255;
956 data[pos+2] = 255;
957 }
958 }
959 else if (use_shift)
960 {
961 data[pos] = (pixel >> red_shift_right) << red_shift_left;
962 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
963 data[pos+2] = (pixel >> blue_shift_right) << blue_shift_left;
964 }
965 else if (cmap->colors)
966 {
967 data[pos] = cmap->colors[pixel].red >> 8;
968 data[pos+1] = cmap->colors[pixel].green >> 8;
969 data[pos+2] = cmap->colors[pixel].blue >> 8;
970 }
971 else
972 {
973 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
974 }
975
976 if (gdk_image_mask)
977 {
978 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
979 if (mask_pixel == 0)
980 {
981 data[pos] = MASK_RED;
982 data[pos+1] = MASK_GREEN;
983 data[pos+2] = MASK_BLUE;
984 }
985 else if ( data[pos] == MASK_RED &&
986 data[pos+1] == MASK_GREEN &&
987 data[pos+2] == MASK_BLUE )
988 {
989 data[pos+2] = MASK_BLUE_REPLACEMENT;
990 }
991 }
992
993 pos += 3;
994 }
995 }
996
997 gdk_image_destroy( gdk_image );
998 if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
999
1000 return image;
1001}
1002
1003wxBitmap::wxBitmap( const wxBitmap& bmp )
1004 : wxGDIObject()
1005{
1006 Ref( bmp );
1007}
1008
1009wxBitmap::wxBitmap( const wxString &filename, int type )
1010{
1011 LoadFile( filename, type );
1012}
1013
1014wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1015{
1016 if ( width > 0 && height > 0 )
1017 {
1018 m_refData = new wxBitmapRefData();
1019
1020 M_BMPDATA->m_mask = (wxMask *) NULL;
1021 M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1022 (
1023 wxGetRootWindow()->window,
1024 (gchar *) bits,
1025 width,
1026 height
1027 );
1028 M_BMPDATA->m_width = width;
1029 M_BMPDATA->m_height = height;
1030 M_BMPDATA->m_bpp = 1;
1031
1032 wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1033 }
1034}
1035
1036wxBitmap::~wxBitmap()
1037{
1038}
1039
1040wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1041{
1042 if ( m_refData != bmp.m_refData )
1043 Ref( bmp );
1044
1045 return *this;
1046}
1047
1048bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1049{
1050 return m_refData == bmp.m_refData;
1051}
1052
1053bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1054{
1055 return m_refData != bmp.m_refData;
1056}
1057
1058bool wxBitmap::Ok() const
1059{
1060 return (m_refData != NULL);
1061}
1062
1063int wxBitmap::GetHeight() const
1064{
1065 wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1066
1067 return M_BMPDATA->m_height;
1068}
1069
1070int wxBitmap::GetWidth() const
1071{
1072 wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1073
1074 return M_BMPDATA->m_width;
1075}
1076
1077int wxBitmap::GetDepth() const
1078{
1079 wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1080
1081 return M_BMPDATA->m_bpp;
1082}
1083
1084wxMask *wxBitmap::GetMask() const
1085{
1086 wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1087
1088 return M_BMPDATA->m_mask;
1089}
1090
1091void wxBitmap::SetMask( wxMask *mask )
1092{
1093 wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1094
1095 if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1096
1097 M_BMPDATA->m_mask = mask;
1098}
1099
1100bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1101{
1102 *this = icon;
1103 return TRUE;
1104}
1105
1106wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1107{
1108 wxCHECK_MSG( Ok() &&
1109 (rect.x >= 0) && (rect.y >= 0) &&
1110 (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1111 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1112
1113 wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1114 wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1115
1116 if (ret.GetPixmap())
1117 {
1118 GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1119 gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1120 gdk_gc_destroy( gc );
1121 }
1122 else
1123 {
1124 GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1125 gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1126 gdk_gc_destroy( gc );
1127 }
1128
1129 if (GetMask())
1130 {
1131 wxMask *mask = new wxMask;
1132 mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1133
1134 GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1135 gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, 0, 0, rect.x, rect.y, rect.width, rect.height );
1136 gdk_gc_destroy( gc );
1137
1138 ret.SetMask( mask );
1139 }
1140
1141 return ret;
1142}
1143
1144bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
1145{
1146 wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
1147
1148 // Try to save the bitmap via wxImage handlers:
1149 {
1150 wxImage image = ConvertToImage();
1151 if (image.Ok()) return image.SaveFile( name, type );
1152 }
1153
1154 return FALSE;
1155}
1156
1157bool wxBitmap::LoadFile( const wxString &name, int type )
1158{
1159 UnRef();
1160
1161 if (!wxFileExists(name))
1162 return FALSE;
1163
1164 GdkVisual *visual = wxTheApp->GetGdkVisual();
1165
1166 if (type == wxBITMAP_TYPE_XPM)
1167 {
1168 m_refData = new wxBitmapRefData();
1169
1170 GdkBitmap *mask = (GdkBitmap*) NULL;
1171
1172 M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1173 (
1174 wxGetRootWindow()->window,
1175 &mask,
1176 NULL,
1177 name.fn_str()
1178 );
1179
1180 if (mask)
1181 {
1182 M_BMPDATA->m_mask = new wxMask();
1183 M_BMPDATA->m_mask->m_bitmap = mask;
1184 }
1185
1186 gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1187
1188 M_BMPDATA->m_bpp = visual->depth;
1189 }
1190 else // try if wxImage can load it
1191 {
1192 wxImage image;
1193 if ( !image.LoadFile( name, type ) || !image.Ok() )
1194 return FALSE;
1195
1196 *this = wxBitmap(image);
1197 }
1198
1199 return TRUE;
1200}
1201
1202wxPalette *wxBitmap::GetPalette() const
1203{
1204 if (!Ok())
1205 return (wxPalette *) NULL;
1206
1207 return M_BMPDATA->m_palette;
1208}
1209
1210void wxBitmap::SetHeight( int height )
1211{
1212 if (!m_refData)
1213 m_refData = new wxBitmapRefData();
1214
1215 M_BMPDATA->m_height = height;
1216}
1217
1218void wxBitmap::SetWidth( int width )
1219{
1220 if (!m_refData)
1221 m_refData = new wxBitmapRefData();
1222
1223 M_BMPDATA->m_width = width;
1224}
1225
1226void wxBitmap::SetDepth( int depth )
1227{
1228 if (!m_refData)
1229 m_refData = new wxBitmapRefData();
1230
1231 M_BMPDATA->m_bpp = depth;
1232}
1233
1234void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1235{
1236 if (!m_refData)
1237 m_refData = new wxBitmapRefData();
1238
1239 M_BMPDATA->m_pixmap = pixmap;
1240}
1241
1242void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1243{
1244 if (!m_refData)
1245 m_refData = new wxBitmapRefData();
1246
1247 M_BMPDATA->m_bitmap = bitmap;
1248}
1249
1250GdkPixmap *wxBitmap::GetPixmap() const
1251{
1252 wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1253
1254 return M_BMPDATA->m_pixmap;
1255}
1256
1257GdkBitmap *wxBitmap::GetBitmap() const
1258{
1259 wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1260
1261 return M_BMPDATA->m_bitmap;
1262}
wxWidgets (Impactor)