1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <vcl/canvastools.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/bmpacc.hxx>
#include <tools/diagnose_ex.h>
#include "dx_impltools.hxx"
#include <basegfx/numeric/ftools.hxx>
#include <canvas/debug.hxx>
#include <canvas/verbosetrace.hxx>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/rendering/XIntegerBitmap.hpp>
#include <boost/scoped_array.hpp>
#include "dx_vcltools.hxx"
using namespace ::com::sun::star;
namespace dxcanvas
{
namespace tools
{
namespace
{
/// Calc number of colors in given BitmapInfoHeader
sal_Int32 calcDIBColorCount( const BITMAPINFOHEADER& rBIH )
{
if( rBIH.biSize != sizeof( BITMAPCOREHEADER ) )
{
if( rBIH.biBitCount <= 8 )
{
if( rBIH.biClrUsed )
return rBIH.biClrUsed;
else
return 1L << rBIH.biBitCount;
}
}
else
{
BITMAPCOREHEADER* pCoreHeader = (BITMAPCOREHEADER*)&rBIH;
if( pCoreHeader->bcBitCount <= 8 )
return 1L << pCoreHeader->bcBitCount;
}
return 0; // nothing known
}
/// Draw DI bits to given Graphics
bool drawDIBits( const ::boost::shared_ptr< Gdiplus::Graphics >& rGraphics,
const void* hDIB )
{
bool bRet( false );
BitmapSharedPtr pBitmap;
const BITMAPINFO* pBI = (BITMAPINFO*)GlobalLock( (HGLOBAL)hDIB );
if( pBI )
{
const BITMAPINFOHEADER* pBIH = (BITMAPINFOHEADER*)pBI;
const BYTE* pBits = (BYTE*) pBI + *(DWORD*)pBI +
calcDIBColorCount( *pBIH ) * sizeof( RGBQUAD );
// forward to outsourced GDI+ rendering method
// (header clashes)
bRet = tools::drawDIBits( rGraphics, *pBI, (void*)pBits );
GlobalUnlock( (HGLOBAL)hDIB );
}
return bRet;
}
/** Draw VCL bitmap to given Graphics
@param rBmp
Reference to bitmap. Might get modified, in such a way
that it will hold a DIB after a successful function call.
*/
bool drawVCLBitmap( const ::boost::shared_ptr< Gdiplus::Graphics >& rGraphics,
::Bitmap& rBmp )
{
BitmapSystemData aBmpSysData;
if( !rBmp.GetSystemData( aBmpSysData ) ||
!aBmpSysData.pDIB )
{
// first of all, ensure that Bitmap contains a DIB, by
// aquiring a read access
BitmapReadAccess* pReadAcc = rBmp.AcquireReadAccess();
// TODO(P2): Acquiring a read access can actually
// force a read from VRAM, thus, avoiding this
// step somehow will increase performance
// here.
if( pReadAcc )
{
// try again: now, WinSalBitmap must have
// generated a DIB
if( rBmp.GetSystemData( aBmpSysData ) &&
aBmpSysData.pDIB )
{
return drawDIBits( rGraphics,
aBmpSysData.pDIB );
}
rBmp.ReleaseAccess( pReadAcc );
}
}
else
{
return drawDIBits( rGraphics,
aBmpSysData.pDIB );
}
// failed to generate DIBits from vcl bitmap
return false;
}
/** Create a chunk of raw RGBA data GDI+ Bitmap from VCL BbitmapEX
*/
RawRGBABitmap bitmapFromVCLBitmapEx( const ::BitmapEx& rBmpEx )
{
// TODO(P2): Avoid temporary bitmap generation, maybe
// even ensure that created DIBs are copied back to
// BmpEx (currently, every AcquireReadAccess() will
// make the local bitmap copy unique, effectively
// duplicating the memory used)
ENSURE_OR_THROW( rBmpEx.IsTransparent(),
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"BmpEx not transparent" );
// convert transparent bitmap to 32bit RGBA
// ========================================
const ::Size aBmpSize( rBmpEx.GetSizePixel() );
RawRGBABitmap aBmpData;
aBmpData.mnWidth = aBmpSize.Width();
aBmpData.mnHeight = aBmpSize.Height();
aBmpData.mpBitmapData.reset( new sal_uInt8[ 4*aBmpData.mnWidth*aBmpData.mnHeight ] );
Bitmap aBitmap( rBmpEx.GetBitmap() );
Bitmap::ScopedReadAccess pReadAccess( aBitmap );
const sal_Int32 nWidth( aBmpSize.Width() );
const sal_Int32 nHeight( aBmpSize.Height() );
ENSURE_OR_THROW( pReadAccess.get() != NULL,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unable to acquire read acces to bitmap" );
if( rBmpEx.IsAlpha() )
{
Bitmap aAlpha( rBmpEx.GetAlpha().GetBitmap() );
Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha );
// By convention, the access buffer always has
// one of the following formats:
// BMP_FORMAT_1BIT_MSB_PAL
// BMP_FORMAT_4BIT_MSN_PAL
// BMP_FORMAT_8BIT_PAL
// BMP_FORMAT_16BIT_TC_LSB_MASK
// BMP_FORMAT_24BIT_TC_BGR
// BMP_FORMAT_32BIT_TC_MASK
// and is always BMP_FORMAT_BOTTOM_UP
// This is the way
// WinSalBitmap::AcquireBuffer() sets up the
// buffer
ENSURE_OR_THROW( pAlphaReadAccess.get() != NULL,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unable to acquire read acces to alpha" );
ENSURE_OR_THROW( pAlphaReadAccess->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ||
pAlphaReadAccess->GetScanlineFormat() == BMP_FORMAT_8BIT_TC_MASK,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unsupported alpha scanline format" );
BitmapColor aCol;
const sal_Int32 nWidth( aBmpSize.Width() );
const sal_Int32 nHeight( aBmpSize.Height() );
sal_uInt8* pCurrOutput( aBmpData.mpBitmapData.get() );
int x, y;
for( y=0; y<nHeight; ++y )
{
switch( pReadAccess->GetScanlineFormat() )
{
case BMP_FORMAT_8BIT_PAL:
{
Scanline pScan = pReadAccess->GetScanline( y );
Scanline pAScan = pAlphaReadAccess->GetScanline( y );
for( x=0; x<nWidth; ++x )
{
aCol = pReadAccess->GetPaletteColor( *pScan++ );
*pCurrOutput++ = aCol.GetBlue();
*pCurrOutput++ = aCol.GetGreen();
*pCurrOutput++ = aCol.GetRed();
// out notion of alpha is
// different from the rest
// of the world's
*pCurrOutput++ = 255 - (BYTE)*pAScan++;
}
}
break;
case BMP_FORMAT_24BIT_TC_BGR:
{
Scanline pScan = pReadAccess->GetScanline( y );
Scanline pAScan = pAlphaReadAccess->GetScanline( y );
for( x=0; x<nWidth; ++x )
{
// store as RGBA
*pCurrOutput++ = *pScan++;
*pCurrOutput++ = *pScan++;
*pCurrOutput++ = *pScan++;
// out notion of alpha is
// different from the rest
// of the world's
*pCurrOutput++ = 255 - (BYTE)*pAScan++;
}
}
break;
// TODO(P2): Might be advantageous
// to hand-formulate the following
// formats, too.
case BMP_FORMAT_1BIT_MSB_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_4BIT_MSN_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_16BIT_TC_LSB_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_MASK:
{
Scanline pAScan = pAlphaReadAccess->GetScanline( y );
// using fallback for those
// seldom formats
for( x=0; x<nWidth; ++x )
{
// yes. x and y are swapped on Get/SetPixel
aCol = pReadAccess->GetColor(y,x);
*pCurrOutput++ = aCol.GetBlue();
*pCurrOutput++ = aCol.GetGreen();
*pCurrOutput++ = aCol.GetRed();
// out notion of alpha is
// different from the rest
// of the world's
*pCurrOutput++ = 255 - (BYTE)*pAScan++;
}
}
break;
case BMP_FORMAT_1BIT_LSB_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_4BIT_LSN_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_8BIT_TC_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_24BIT_TC_RGB:
// FALLTHROUGH intended
case BMP_FORMAT_24BIT_TC_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_16BIT_TC_MSB_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_ABGR:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_ARGB:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_BGRA:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_RGBA:
// FALLTHROUGH intended
default:
ENSURE_OR_THROW( false,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unexpected scanline format - has "
"WinSalBitmap::AcquireBuffer() changed?" );
}
}
}
else
{
Bitmap aMask( rBmpEx.GetMask() );
Bitmap::ScopedReadAccess pMaskReadAccess( aMask );
// By convention, the access buffer always has
// one of the following formats:
// BMP_FORMAT_1BIT_MSB_PAL
// BMP_FORMAT_4BIT_MSN_PAL
// BMP_FORMAT_8BIT_PAL
// BMP_FORMAT_16BIT_TC_LSB_MASK
// BMP_FORMAT_24BIT_TC_BGR
// BMP_FORMAT_32BIT_TC_MASK
// and is always BMP_FORMAT_BOTTOM_UP
// This is the way
// WinSalBitmap::AcquireBuffer() sets up the
// buffer
ENSURE_OR_THROW( pMaskReadAccess.get() != NULL,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unable to acquire read acces to mask" );
ENSURE_OR_THROW( pMaskReadAccess->GetScanlineFormat() == BMP_FORMAT_1BIT_MSB_PAL,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unsupported mask scanline format" );
BitmapColor aCol;
int nCurrBit;
const int nMask( 1L );
const int nInitialBit(7);
sal_uInt8* pCurrOutput( aBmpData.mpBitmapData.get() );
int x, y;
// mapping table, to get from mask index color to
// alpha value (which depends on the mask's palette)
sal_uInt8 aColorMap[2];
const BitmapColor& rCol0( pMaskReadAccess->GetPaletteColor( 0 ) );
const BitmapColor& rCol1( pMaskReadAccess->GetPaletteColor( 1 ) );
// shortcut for true luminance calculation
// (assumes that palette is grey-level). Note the
// swapped the indices here, to account for the
// fact that VCL's notion of alpha is inverted to
// the rest of the world's.
aColorMap[0] = rCol1.GetRed();
aColorMap[1] = rCol0.GetRed();
for( y=0; y<nHeight; ++y )
{
switch( pReadAccess->GetScanlineFormat() )
{
case BMP_FORMAT_8BIT_PAL:
{
Scanline pScan = pReadAccess->GetScanline( y );
Scanline pMScan = pMaskReadAccess->GetScanline( y );
for( x=0, nCurrBit=nInitialBit; x<nWidth; ++x )
{
aCol = pReadAccess->GetPaletteColor( *pScan++ );
*pCurrOutput++ = aCol.GetBlue();
*pCurrOutput++ = aCol.GetGreen();
*pCurrOutput++ = aCol.GetRed();
*pCurrOutput++ = aColorMap[ (pMScan[ (x & ~7L) >> 3L ] >> nCurrBit ) & nMask ];
nCurrBit = ((nCurrBit - 1) % 8L) & 7L;
}
}
break;
case BMP_FORMAT_24BIT_TC_BGR:
{
Scanline pScan = pReadAccess->GetScanline( y );
Scanline pMScan = pMaskReadAccess->GetScanline( y );
for( x=0, nCurrBit=nInitialBit; x<nWidth; ++x )
{
// store as RGBA
*pCurrOutput++ = *pScan++;
*pCurrOutput++ = *pScan++;
*pCurrOutput++ = *pScan++;
*pCurrOutput++ = aColorMap[ (pMScan[ (x & ~7L) >> 3L ] >> nCurrBit ) & nMask ];
nCurrBit = ((nCurrBit - 1) % 8L) & 7L;
}
}
break;
// TODO(P2): Might be advantageous
// to hand-formulate the following
// formats, too.
case BMP_FORMAT_1BIT_MSB_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_4BIT_MSN_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_16BIT_TC_LSB_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_MASK:
{
Scanline pMScan = pMaskReadAccess->GetScanline( y );
// using fallback for those
// seldom formats
for( x=0, nCurrBit=nInitialBit; x<nWidth; ++x )
{
// yes. x and y are swapped on Get/SetPixel
aCol = pReadAccess->GetColor(y,x);
// store as RGBA
*pCurrOutput++ = aCol.GetBlue();
*pCurrOutput++ = aCol.GetGreen();
*pCurrOutput++ = aCol.GetRed();
*pCurrOutput++ = aColorMap[ (pMScan[ (x & ~7L) >> 3L ] >> nCurrBit ) & nMask ];
nCurrBit = ((nCurrBit - 1) % 8L) & 7L;
}
}
break;
case BMP_FORMAT_1BIT_LSB_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_4BIT_LSN_PAL:
// FALLTHROUGH intended
case BMP_FORMAT_8BIT_TC_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_24BIT_TC_RGB:
// FALLTHROUGH intended
case BMP_FORMAT_24BIT_TC_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_16BIT_TC_MSB_MASK:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_ABGR:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_ARGB:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_BGRA:
// FALLTHROUGH intended
case BMP_FORMAT_32BIT_TC_RGBA:
// FALLTHROUGH intended
default:
ENSURE_OR_THROW( false,
"::dxcanvas::tools::bitmapFromVCLBitmapEx(): "
"Unexpected scanline format - has "
"WinSalBitmap::AcquireBuffer() changed?" );
}
}
}
return aBmpData;
}
bool drawVCLBitmapEx( const ::boost::shared_ptr< Gdiplus::Graphics >& rGraphics,
const ::BitmapEx& rBmpEx )
{
if( !rBmpEx.IsTransparent() )
{
Bitmap aBmp( rBmpEx.GetBitmap() );
return drawVCLBitmap( rGraphics, aBmp );
}
else
{
return drawRGBABits( rGraphics,
bitmapFromVCLBitmapEx( rBmpEx ) );
}
}
}
bool drawVCLBitmapFromXBitmap( const ::boost::shared_ptr< Gdiplus::Graphics >& rGraphics,
const uno::Reference< rendering::XBitmap >& xBitmap )
{
// TODO(F2): add support for floating point bitmap formats
uno::Reference< rendering::XIntegerReadOnlyBitmap > xIntBmp(
xBitmap, uno::UNO_QUERY );
if( !xIntBmp.is() )
return false;
::BitmapEx aBmpEx = ::vcl::unotools::bitmapExFromXBitmap( xIntBmp );
if( !aBmpEx )
return false;
return drawVCLBitmapEx( rGraphics, aBmpEx );
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
