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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 int old_x = -1;
418 guint32 old_pixval = 0;
419
420 for (int w = 0; w < width; w++)
421 {
422 guint32 pixval;
423 int x = tablex[w];
424 if (x == old_x)
425 pixval = old_pixval;
426 else
427 {
428 pixval = gdk_image_get_pixel( img, x, tabley[h] );
429 old_pixval = pixval;
430 old_x = x;
431 }
432
433 if (bpp == 1)
434 {
435 if (!pixval)
436 {
437 char bit=1;
438 char shift = bit << w % 8;
439 outbyte |= shift;
440 }
441
442 if ((w+1)%8==0)
443 {
444 dst[h*dstbyteperline+w/8] = outbyte;
445 outbyte = 0;
446 }
447 }
448 else
449 {
450 GdkColor col;
451 col.pixel = pixval;
452 gdk_gc_set_foreground( gc, &col );
453 gdk_draw_point( dstpix, gc, w, h);
454 }
455 }
456
457 // do not forget the last byte
458 if ((bpp == 1) && (width % 8 != 0))
459 dst[h*dstbyteperline+width/8] = outbyte;
460 }
461
462 gdk_image_destroy( img );
463 if (gc) gdk_gc_unref( gc );
464
465 if (bpp == 1)
466 {
467 bmp = wxBitmap( (const char *)dst, width, height, 1 );
468 free( dst );
469 }
470
471 if (GetMask())
472 {
473 dstbyteperline = width/8;
474 if (width % 8 != 0)
475 dstbyteperline++;
476 dst = (char*) malloc(dstbyteperline*height);
477 img = gdk_image_get( GetMask()->GetBitmap(), 0, 0, GetWidth(), GetHeight() );
478
479 for (int h = 0; h < height; h++)
480 {
481 char outbyte = 0;
482 int old_x = -1;
483 guint32 old_pixval = 0;
484
485 for (int w = 0; w < width; w++)
486 {
487 guint32 pixval;
488 int x = tablex[w];
489 if (x == old_x)
490 pixval = old_pixval;
491 else
492 {
493 pixval = gdk_image_get_pixel( img, x, tabley[h] );
494 old_pixval = pixval;
495 old_x = x;
496 }
497
498 if (pixval)
499 {
500 char bit=1;
501 char shift = bit << w % 8;
502 outbyte |= shift;
503 }
504
505 if ((w+1)%8 == 0)
506 {
507 dst[h*dstbyteperline+w/8] = outbyte;
508 outbyte = 0;
509 }
510 }
511
512 // do not forget the last byte
513 if (width % 8 != 0)
514 dst[h*dstbyteperline+width/8] = outbyte;
515 }
516 wxMask* mask = new wxMask;
517 mask->m_bitmap = gdk_bitmap_create_from_data( wxGetRootWindow()->window, (gchar *) dst, width, height );
518 bmp.SetMask(mask);
519
520 free( dst );
521 gdk_image_destroy( img );
522 }
523
524 free( tablex );
525 free( tabley );
526
527 return bmp;
528}
529
530bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
531{
532 UnRef();
533
534 wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
535 wxCHECK_MSG( depth == -1 || depth == 1, FALSE, wxT("invalid bitmap depth") )
536
537 int width = image.GetWidth();
538 int height = image.GetHeight();
539
540 if ( width <= 0 || height <= 0 )
541 {
542 return false;
543 }
544
545 m_refData = new wxBitmapRefData();
546
547 SetHeight( height );
548 SetWidth( width );
549
550 // ------
551 // conversion to mono bitmap:
552 // ------
553 if (depth == 1)
554 {
555 SetBitmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 ) );
556
557 SetDepth( 1 );
558
559 GdkVisual *visual = wxTheApp->GetGdkVisual();
560
561 // Create picture image
562
563 unsigned char *data_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
564
565 GdkImage *data_image =
566 gdk_image_new_bitmap( visual, data_data, width, height );
567
568 // Create mask image
569
570 GdkImage *mask_image = (GdkImage*) NULL;
571
572 if (image.HasMask())
573 {
574 unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
575
576 mask_image = gdk_image_new_bitmap( visual, mask_data, width, height );
577
578 wxMask *mask = new wxMask();
579 mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
580
581 SetMask( mask );
582 }
583
584 int r_mask = image.GetMaskRed();
585 int g_mask = image.GetMaskGreen();
586 int b_mask = image.GetMaskBlue();
587
588 unsigned char* data = image.GetData();
589
590 int index = 0;
591 for (int y = 0; y < height; y++)
592 {
593 for (int x = 0; x < width; x++)
594 {
595 int r = data[index];
596 index++;
597 int g = data[index];
598 index++;
599 int b = data[index];
600 index++;
601
602 if (image.HasMask())
603 {
604 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
605 gdk_image_put_pixel( mask_image, x, y, 1 );
606 else
607 gdk_image_put_pixel( mask_image, x, y, 0 );
608 }
609
610 if ((r == 255) && (b == 255) && (g == 255))
611 gdk_image_put_pixel( data_image, x, y, 1 );
612 else
613 gdk_image_put_pixel( data_image, x, y, 0 );
614
615 } // for
616 } // for
617
618 // Blit picture
619
620 GdkGC *data_gc = gdk_gc_new( GetBitmap() );
621
622 gdk_draw_image( GetBitmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
623
624 gdk_image_destroy( data_image );
625 gdk_gc_unref( data_gc );
626
627 // Blit mask
628
629 if (image.HasMask())
630 {
631 GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
632
633 gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
634
635 gdk_image_destroy( mask_image );
636 gdk_gc_unref( mask_gc );
637 }
638 }
639
640 // ------
641 // conversion to colour bitmap:
642 // ------
643 else
644 {
645 SetPixmap( gdk_pixmap_new( wxGetRootWindow()->window, width, height, -1 ) );
646
647 GdkVisual *visual = wxTheApp->GetGdkVisual();
648
649 int bpp = visual->depth;
650
651 SetDepth( bpp );
652
653 if ((bpp == 16) && (visual->red_mask != 0xf800))
654 bpp = 15;
655 else if (bpp < 8)
656 bpp = 8;
657
658 // We handle 8-bit bitmaps ourselves using the colour cube, 12-bit
659 // visuals are not supported by GDK so we do these ourselves, too.
660 // 15-bit and 16-bit should actually work and 24-bit certainly does.
661#ifdef __sgi
662 if (!image.HasMask() && (bpp > 16))
663#else
664 if (!image.HasMask() && (bpp > 12))
665#endif
666 {
667 static bool s_hasInitialized = FALSE;
668
669 if (!s_hasInitialized)
670 {
671 gdk_rgb_init();
672 s_hasInitialized = TRUE;
673 }
674
675 GdkGC *gc = gdk_gc_new( GetPixmap() );
676
677 gdk_draw_rgb_image( GetPixmap(),
678 gc,
679 0, 0,
680 width, height,
681 GDK_RGB_DITHER_NONE,
682 image.GetData(),
683 width*3 );
684
685 gdk_gc_unref( gc );
686 return TRUE;
687 }
688
689 // Create picture image
690
691 GdkImage *data_image =
692 gdk_image_new( GDK_IMAGE_FASTEST, visual, width, height );
693
694 // Create mask image
695
696 GdkImage *mask_image = (GdkImage*) NULL;
697
698 if (image.HasMask())
699 {
700 unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
701
702 mask_image = gdk_image_new_bitmap( visual, mask_data, width, height );
703
704 wxMask *mask = new wxMask();
705 mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, width, height, 1 );
706
707 SetMask( mask );
708 }
709
710 // Render
711
712 enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
713 byte_order b_o = RGB;
714
715 if (bpp > 8)
716 {
717 if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask)) b_o = RGB;
718 else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask)) b_o = RBG;
719 else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask)) b_o = BRG;
720 else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
721 else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask)) b_o = GRB;
722 else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask)) b_o = GBR;
723 }
724
725 int r_mask = image.GetMaskRed();
726 int g_mask = image.GetMaskGreen();
727 int b_mask = image.GetMaskBlue();
728
729 unsigned char* data = image.GetData();
730
731 int index = 0;
732 for (int y = 0; y < height; y++)
733 {
734 for (int x = 0; x < width; x++)
735 {
736 int r = data[index];
737 index++;
738 int g = data[index];
739 index++;
740 int b = data[index];
741 index++;
742
743 if (image.HasMask())
744 {
745 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
746 gdk_image_put_pixel( mask_image, x, y, 1 );
747 else
748 gdk_image_put_pixel( mask_image, x, y, 0 );
749 }
750
751 switch (bpp)
752 {
753 case 8:
754 {
755 int pixel = -1;
756 if (wxTheApp->m_colorCube)
757 {
758 pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
759 }
760 else
761 {
762 GdkColormap *cmap = gtk_widget_get_default_colormap();
763 GdkColor *colors = cmap->colors;
764 int max = 3 * (65536);
765
766 for (int i = 0; i < cmap->size; i++)
767 {
768 int rdiff = (r << 8) - colors[i].red;
769 int gdiff = (g << 8) - colors[i].green;
770 int bdiff = (b << 8) - colors[i].blue;
771 int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
772 if (sum < max) { pixel = i; max = sum; }
773 }
774 }
775
776 gdk_image_put_pixel( data_image, x, y, pixel );
777
778 break;
779 }
780 case 12: // SGI only
781 {
782 guint32 pixel = 0;
783 switch (b_o)
784 {
785 case RGB: pixel = ((r & 0xf0) << 4) | (g & 0xf0) | ((b & 0xf0) >> 4); break;
786 case RBG: pixel = ((r & 0xf0) << 4) | (b & 0xf0) | ((g & 0xf0) >> 4); break;
787 case GRB: pixel = ((g & 0xf0) << 4) | (r & 0xf0) | ((b & 0xf0) >> 4); break;
788 case GBR: pixel = ((g & 0xf0) << 4) | (b & 0xf0) | ((r & 0xf0) >> 4); break;
789 case BRG: pixel = ((b & 0xf0) << 4) | (r & 0xf0) | ((g & 0xf0) >> 4); break;
790 case BGR: pixel = ((b & 0xf0) << 4) | (g & 0xf0) | ((r & 0xf0) >> 4); break;
791 }
792 gdk_image_put_pixel( data_image, x, y, pixel );
793 break;
794 }
795 case 15:
796 {
797 guint32 pixel = 0;
798 switch (b_o)
799 {
800 case RGB: pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
801 case RBG: pixel = ((r & 0xf8) << 7) | ((b & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
802 case GRB: pixel = ((g & 0xf8) << 7) | ((r & 0xf8) << 2) | ((b & 0xf8) >> 3); break;
803 case GBR: pixel = ((g & 0xf8) << 7) | ((b & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
804 case BRG: pixel = ((b & 0xf8) << 7) | ((r & 0xf8) << 2) | ((g & 0xf8) >> 3); break;
805 case BGR: pixel = ((b & 0xf8) << 7) | ((g & 0xf8) << 2) | ((r & 0xf8) >> 3); break;
806 }
807 gdk_image_put_pixel( data_image, x, y, pixel );
808 break;
809 }
810 case 16:
811 {
812 // I actually don't know if for 16-bit displays, it is alway the green
813 // component or the second component which has 6 bits.
814 guint32 pixel = 0;
815 switch (b_o)
816 {
817 case RGB: pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
818 case RBG: pixel = ((r & 0xf8) << 8) | ((b & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
819 case GRB: pixel = ((g & 0xf8) << 8) | ((r & 0xfc) << 3) | ((b & 0xf8) >> 3); break;
820 case GBR: pixel = ((g & 0xf8) << 8) | ((b & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
821 case BRG: pixel = ((b & 0xf8) << 8) | ((r & 0xfc) << 3) | ((g & 0xf8) >> 3); break;
822 case BGR: pixel = ((b & 0xf8) << 8) | ((g & 0xfc) << 3) | ((r & 0xf8) >> 3); break;
823 }
824 gdk_image_put_pixel( data_image, x, y, pixel );
825 break;
826 }
827 case 32:
828 case 24:
829 {
830 guint32 pixel = 0;
831 switch (b_o)
832 {
833 case RGB: pixel = (r << 16) | (g << 8) | b; break;
834 case RBG: pixel = (r << 16) | (b << 8) | g; break;
835 case BRG: pixel = (b << 16) | (r << 8) | g; break;
836 case BGR: pixel = (b << 16) | (g << 8) | r; break;
837 case GRB: pixel = (g << 16) | (r << 8) | b; break;
838 case GBR: pixel = (g << 16) | (b << 8) | r; break;
839 }
840 gdk_image_put_pixel( data_image, x, y, pixel );
841 }
842 default: break;
843 }
844 } // for
845 } // for
846
847 // Blit picture
848
849 GdkGC *data_gc = gdk_gc_new( GetPixmap() );
850
851 gdk_draw_image( GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
852
853 gdk_image_destroy( data_image );
854 gdk_gc_unref( data_gc );
855
856 // Blit mask
857
858 if (image.HasMask())
859 {
860 GdkGC *mask_gc = gdk_gc_new( GetMask()->GetBitmap() );
861
862 gdk_draw_image( GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
863
864 gdk_image_destroy( mask_image );
865 gdk_gc_unref( mask_gc );
866 }
867 }
868
869 return TRUE;
870}
871
872wxImage wxBitmap::ConvertToImage() const
873{
874 // the colour used as transparent one in wxImage and the one it is replaced
875 // with when it really occurs in the bitmap
876 static const int MASK_RED = 1;
877 static const int MASK_GREEN = 2;
878 static const int MASK_BLUE = 3;
879 static const int MASK_BLUE_REPLACEMENT = 2;
880
881 wxImage image;
882
883 wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
884
885 GdkImage *gdk_image = (GdkImage*) NULL;
886 if (GetPixmap())
887 {
888 gdk_image = gdk_image_get( GetPixmap(),
889 0, 0,
890 GetWidth(), GetHeight() );
891 }
892 else if (GetBitmap())
893 {
894 gdk_image = gdk_image_get( GetBitmap(),
895 0, 0,
896 GetWidth(), GetHeight() );
897 }
898 else
899 {
900 wxFAIL_MSG( wxT("Ill-formed bitmap") );
901 }
902
903 wxCHECK_MSG( gdk_image, wxNullImage, wxT("couldn't create image") );
904
905 image.Create( GetWidth(), GetHeight() );
906 char unsigned *data = image.GetData();
907
908 if (!data)
909 {
910 gdk_image_destroy( gdk_image );
911 wxFAIL_MSG( wxT("couldn't create image") );
912 return wxNullImage;
913 }
914
915 GdkImage *gdk_image_mask = (GdkImage*) NULL;
916 if (GetMask())
917 {
918 gdk_image_mask = gdk_image_get( GetMask()->GetBitmap(),
919 0, 0,
920 GetWidth(), GetHeight() );
921
922 image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
923 }
924
925 int bpp = -1;
926 int red_shift_right = 0;
927 int green_shift_right = 0;
928 int blue_shift_right = 0;
929 int red_shift_left = 0;
930 int green_shift_left = 0;
931 int blue_shift_left = 0;
932 bool use_shift = FALSE;
933
934 if (GetPixmap())
935 {
936 GdkVisual *visual = gdk_window_get_visual( GetPixmap() );
937 if (visual == NULL)
938 visual = wxTheApp->GetGdkVisual();
939
940 bpp = visual->depth;
941 if (bpp == 16)
942 bpp = visual->red_prec + visual->green_prec + visual->blue_prec;
943 red_shift_right = visual->red_shift;
944 red_shift_left = 8-visual->red_prec;
945 green_shift_right = visual->green_shift;
946 green_shift_left = 8-visual->green_prec;
947 blue_shift_right = visual->blue_shift;
948 blue_shift_left = 8-visual->blue_prec;
949
950 use_shift = (visual->type == GDK_VISUAL_TRUE_COLOR) || (visual->type == GDK_VISUAL_DIRECT_COLOR);
951 }
952 if (GetBitmap())
953 {
954 bpp = 1;
955 }
956
957
958 GdkColormap *cmap = gtk_widget_get_default_colormap();
959
960 long pos = 0;
961 for (int j = 0; j < GetHeight(); j++)
962 {
963 for (int i = 0; i < GetWidth(); i++)
964 {
965 wxUint32 pixel = gdk_image_get_pixel( gdk_image, i, j );
966 if (bpp == 1)
967 {
968 if (pixel == 0)
969 {
970 data[pos] = 0;
971 data[pos+1] = 0;
972 data[pos+2] = 0;
973 }
974 else
975 {
976 data[pos] = 255;
977 data[pos+1] = 255;
978 data[pos+2] = 255;
979 }
980 }
981 else if (use_shift)
982 {
983 data[pos] = (pixel >> red_shift_right) << red_shift_left;
984 data[pos+1] = (pixel >> green_shift_right) << green_shift_left;
985 data[pos+2] = (pixel >> blue_shift_right) << blue_shift_left;
986 }
987 else if (cmap->colors)
988 {
989 data[pos] = cmap->colors[pixel].red >> 8;
990 data[pos+1] = cmap->colors[pixel].green >> 8;
991 data[pos+2] = cmap->colors[pixel].blue >> 8;
992 }
993 else
994 {
995 wxFAIL_MSG( wxT("Image conversion failed. Unknown visual type.") );
996 }
997
998 if (gdk_image_mask)
999 {
1000 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1001 if (mask_pixel == 0)
1002 {
1003 data[pos] = MASK_RED;
1004 data[pos+1] = MASK_GREEN;
1005 data[pos+2] = MASK_BLUE;
1006 }
1007 else if ( data[pos] == MASK_RED &&
1008 data[pos+1] == MASK_GREEN &&
1009 data[pos+2] == MASK_BLUE )
1010 {
1011 data[pos+2] = MASK_BLUE_REPLACEMENT;
1012 }
1013 }
1014
1015 pos += 3;
1016 }
1017 }
1018
1019 gdk_image_destroy( gdk_image );
1020 if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1021
1022 return image;
1023}
1024
1025wxBitmap::wxBitmap( const wxBitmap& bmp )
1026 : wxGDIObject()
1027{
1028 Ref( bmp );
1029}
1030
1031wxBitmap::wxBitmap( const wxString &filename, int type )
1032{
1033 LoadFile( filename, type );
1034}
1035
1036wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
1037{
1038 if ( width > 0 && height > 0 )
1039 {
1040 m_refData = new wxBitmapRefData();
1041
1042 M_BMPDATA->m_mask = (wxMask *) NULL;
1043 M_BMPDATA->m_bitmap = gdk_bitmap_create_from_data
1044 (
1045 wxGetRootWindow()->window,
1046 (gchar *) bits,
1047 width,
1048 height
1049 );
1050 M_BMPDATA->m_width = width;
1051 M_BMPDATA->m_height = height;
1052 M_BMPDATA->m_bpp = 1;
1053
1054 wxASSERT_MSG( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
1055 }
1056}
1057
1058wxBitmap::~wxBitmap()
1059{
1060}
1061
1062wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
1063{
1064 if ( m_refData != bmp.m_refData )
1065 Ref( bmp );
1066
1067 return *this;
1068}
1069
1070bool wxBitmap::operator == ( const wxBitmap& bmp ) const
1071{
1072 return m_refData == bmp.m_refData;
1073}
1074
1075bool wxBitmap::operator != ( const wxBitmap& bmp ) const
1076{
1077 return m_refData != bmp.m_refData;
1078}
1079
1080bool wxBitmap::Ok() const
1081{
1082 return (m_refData != NULL) && (M_BMPDATA->m_bitmap || M_BMPDATA->m_pixmap);
1083}
1084
1085int wxBitmap::GetHeight() const
1086{
1087 wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1088
1089 return M_BMPDATA->m_height;
1090}
1091
1092int wxBitmap::GetWidth() const
1093{
1094 wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1095
1096 return M_BMPDATA->m_width;
1097}
1098
1099int wxBitmap::GetDepth() const
1100{
1101 wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1102
1103 return M_BMPDATA->m_bpp;
1104}
1105
1106wxMask *wxBitmap::GetMask() const
1107{
1108 wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1109
1110 return M_BMPDATA->m_mask;
1111}
1112
1113void wxBitmap::SetMask( wxMask *mask )
1114{
1115 wxCHECK_RET( Ok(), wxT("invalid bitmap") );
1116
1117 if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
1118
1119 M_BMPDATA->m_mask = mask;
1120}
1121
1122bool wxBitmap::CopyFromIcon(const wxIcon& icon)
1123{
1124 *this = icon;
1125 return TRUE;
1126}
1127
1128wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
1129{
1130 wxCHECK_MSG( Ok() &&
1131 (rect.x >= 0) && (rect.y >= 0) &&
1132 (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
1133 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1134
1135 wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
1136 wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1137
1138 if (ret.GetPixmap())
1139 {
1140 GdkGC *gc = gdk_gc_new( ret.GetPixmap() );
1141 gdk_draw_pixmap( ret.GetPixmap(), gc, GetPixmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1142 gdk_gc_destroy( gc );
1143 }
1144 else
1145 {
1146 GdkGC *gc = gdk_gc_new( ret.GetBitmap() );
1147 GdkColor col;
1148 col.pixel = 0xFFFFFF;
1149 gdk_gc_set_foreground( gc, &col );
1150 col.pixel = 0;
1151 gdk_gc_set_background( gc, &col );
1152 gdk_wx_draw_bitmap( ret.GetBitmap(), gc, GetBitmap(), rect.x, rect.y, 0, 0, rect.width, rect.height );
1153 gdk_gc_destroy( gc );
1154 }
1155
1156 if (GetMask())
1157 {
1158 wxMask *mask = new wxMask;
1159 mask->m_bitmap = gdk_pixmap_new( wxGetRootWindow()->window, rect.width, rect.height, 1 );
1160
1161 GdkGC *gc = gdk_gc_new( mask->m_bitmap );
1162 GdkColor col;
1163 col.pixel = 0xFFFFFF;
1164 gdk_gc_set_foreground( gc, &col );
1165 col.pixel = 0;
1166 gdk_gc_set_background( gc, &col );
1167 gdk_wx_draw_bitmap( mask->m_bitmap, gc, M_BMPDATA->m_mask->m_bitmap, rect.x, rect.y, 0, 0, rect.width, rect.height );
1168 gdk_gc_destroy( gc );
1169
1170 ret.SetMask( mask );
1171 }
1172
1173 return ret;
1174}
1175
1176bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
1177{
1178 wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
1179
1180 // Try to save the bitmap via wxImage handlers:
1181 {
1182 wxImage image = ConvertToImage();
1183 if (image.Ok()) return image.SaveFile( name, type );
1184 }
1185
1186 return FALSE;
1187}
1188
1189bool wxBitmap::LoadFile( const wxString &name, int type )
1190{
1191 UnRef();
1192
1193 if (!wxFileExists(name))
1194 return FALSE;
1195
1196 GdkVisual *visual = wxTheApp->GetGdkVisual();
1197
1198 if (type == wxBITMAP_TYPE_XPM)
1199 {
1200 m_refData = new wxBitmapRefData();
1201
1202 GdkBitmap *mask = (GdkBitmap*) NULL;
1203
1204 M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm
1205 (
1206 wxGetRootWindow()->window,
1207 &mask,
1208 NULL,
1209 name.fn_str()
1210 );
1211
1212 if (mask)
1213 {
1214 M_BMPDATA->m_mask = new wxMask();
1215 M_BMPDATA->m_mask->m_bitmap = mask;
1216 }
1217
1218 gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
1219
1220 M_BMPDATA->m_bpp = visual->depth;
1221 }
1222 else // try if wxImage can load it
1223 {
1224 wxImage image;
1225 if ( !image.LoadFile( name, type ) || !image.Ok() )
1226 return FALSE;
1227
1228 *this = wxBitmap(image);
1229 }
1230
1231 return TRUE;
1232}
1233
1234wxPalette *wxBitmap::GetPalette() const
1235{
1236 if (!Ok())
1237 return (wxPalette *) NULL;
1238
1239 return M_BMPDATA->m_palette;
1240}
1241
1242void wxBitmap::SetHeight( int height )
1243{
1244 if (!m_refData)
1245 m_refData = new wxBitmapRefData();
1246
1247 M_BMPDATA->m_height = height;
1248}
1249
1250void wxBitmap::SetWidth( int width )
1251{
1252 if (!m_refData)
1253 m_refData = new wxBitmapRefData();
1254
1255 M_BMPDATA->m_width = width;
1256}
1257
1258void wxBitmap::SetDepth( int depth )
1259{
1260 if (!m_refData)
1261 m_refData = new wxBitmapRefData();
1262
1263 M_BMPDATA->m_bpp = depth;
1264}
1265
1266void wxBitmap::SetPixmap( GdkPixmap *pixmap )
1267{
1268 if (!m_refData)
1269 m_refData = new wxBitmapRefData();
1270
1271 M_BMPDATA->m_pixmap = pixmap;
1272}
1273
1274void wxBitmap::SetBitmap( GdkPixmap *bitmap )
1275{
1276 if (!m_refData)
1277 m_refData = new wxBitmapRefData();
1278
1279 M_BMPDATA->m_bitmap = bitmap;
1280}
1281
1282GdkPixmap *wxBitmap::GetPixmap() const
1283{
1284 wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
1285
1286 return M_BMPDATA->m_pixmap;
1287}
1288
1289GdkBitmap *wxBitmap::GetBitmap() const
1290{
1291 wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
1292
1293 return M_BMPDATA->m_bitmap;
1294}
wxWidgets (Impactor)