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
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"
#include <canvas/debug.hxx>
#include <tools/diagnose_ex.h>
#include <rtl/math.hxx>
#include <rtl/logfile.hxx>
#include <com/sun/star/geometry/RealSize2D.hpp>
#include <com/sun/star/geometry/RealPoint2D.hpp>
#include <com/sun/star/geometry/RealRectangle2D.hpp>
#include <com/sun/star/rendering/RenderState.hpp>
#include <com/sun/star/rendering/XCanvas.hpp>
#include <com/sun/star/rendering/XBitmap.hpp>
#include <com/sun/star/rendering/XPolyPolygon2D.hpp>
#include <com/sun/star/geometry/RealBezierSegment2D.hpp>
#include <com/sun/star/rendering/XIntegerBitmap.hpp>
#include <vcl/salbtype.hxx>
#include <vcl/bmpacc.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/metric.hxx>
#include <vcl/canvastools.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/tuple/b2dtuple.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <canvas/canvastools.hxx>
#include <o3tl/compat_functional.hxx>
#include "impltools.hxx"
#include "canvasbitmap.hxx"
#include <numeric>
using namespace ::com::sun::star;
namespace vclcanvas
{
namespace tools
{
::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap )
{
// TODO(F3): CanvasCustomSprite should also be tunnelled
// through (also implements XIntegerBitmap interface)
CanvasBitmap* pBitmapImpl = dynamic_cast< CanvasBitmap* >( xBitmap.get() );
if( pBitmapImpl )
{
return pBitmapImpl->getBitmap();
}
else
{
SpriteCanvas* pCanvasImpl = dynamic_cast< SpriteCanvas* >( xBitmap.get() );
if( pCanvasImpl && pCanvasImpl->getBackBuffer() )
{
// TODO(F3): mind the plain Canvas impl. Consolidate with CWS canvas05
const ::OutputDevice& rDev( pCanvasImpl->getBackBuffer()->getOutDev() );
const ::Point aEmptyPoint;
return rDev.GetBitmapEx( aEmptyPoint,
rDev.GetOutputSizePixel() );
}
// TODO(F2): add support for floating point bitmap formats
uno::Reference< rendering::XIntegerReadOnlyBitmap > xIntBmp(
xBitmap, uno::UNO_QUERY_THROW );
::BitmapEx aBmpEx = ::vcl::unotools::bitmapExFromXBitmap( xIntBmp );
if( !!aBmpEx )
return aBmpEx;
// TODO(F1): extract pixel from XBitmap interface
ENSURE_OR_THROW( false,
"bitmapExFromXBitmap(): could not extract bitmap" );
}
return ::BitmapEx();
}
bool setupFontTransform( ::Point& o_rPoint,
::Font& io_rVCLFont,
const rendering::ViewState& rViewState,
const rendering::RenderState& rRenderState,
::OutputDevice& rOutDev )
{
::basegfx::B2DHomMatrix aMatrix;
::canvas::tools::mergeViewAndRenderTransform(aMatrix,
rViewState,
rRenderState);
::basegfx::B2DTuple aScale;
::basegfx::B2DTuple aTranslate;
double nRotate, nShearX;
aMatrix.decompose( aScale, aTranslate, nRotate, nShearX );
// #i72417# detecting the 180 degree rotation case manually here.
if( aScale.getX() < 0.0 &&
aScale.getY() < 0.0 &&
basegfx::fTools::equalZero(nRotate) )
{
aScale *= -1.0;
nRotate += M_PI;
}
// query font metric _before_ tampering with width and height
if( !::rtl::math::approxEqual(aScale.getX(), aScale.getY()) )
{
// retrieve true font width
const sal_Int32 nFontWidth( rOutDev.GetFontMetric( io_rVCLFont ).GetWidth() );
const sal_Int32 nScaledFontWidth( ::basegfx::fround(nFontWidth * aScale.getX()) );
if( !nScaledFontWidth )
{
// scale is smaller than one pixel - disable text
// output altogether
return false;
}
io_rVCLFont.SetWidth( nScaledFontWidth );
}
if( !::rtl::math::approxEqual(aScale.getY(), 1.0) )
{
const sal_Int32 nFontHeight( io_rVCLFont.GetHeight() );
io_rVCLFont.SetHeight( ::basegfx::fround(nFontHeight * aScale.getY()) );
}
io_rVCLFont.SetOrientation( static_cast< short >( ::basegfx::fround(-fmod(nRotate, 2*M_PI)*(1800.0/M_PI)) ) );
// TODO(F2): Missing functionality in VCL: shearing
o_rPoint.X() = ::basegfx::fround(aTranslate.getX());
o_rPoint.Y() = ::basegfx::fround(aTranslate.getY());
return true;
}
bool isRectangle( const PolyPolygon& rPolyPoly )
{
// exclude some cheap cases first
if( rPolyPoly.Count() != 1 )
return false;
const ::Polygon& rPoly( rPolyPoly[0] );
sal_uInt16 nCount( rPoly.GetSize() );
if( nCount < 4 )
return false;
// delegate to basegfx
return ::basegfx::tools::isRectangle( rPoly.getB2DPolygon() );
}
// VCL-Canvas related
//---------------------------------------------------------------------
::Point mapRealPoint2D( const geometry::RealPoint2D& rPoint,
const rendering::ViewState& rViewState,
const rendering::RenderState& rRenderState )
{
::basegfx::B2DPoint aPoint( ::basegfx::unotools::b2DPointFromRealPoint2D(rPoint) );
::basegfx::B2DHomMatrix aMatrix;
aPoint *= ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
rViewState,
rRenderState);
return ::vcl::unotools::pointFromB2DPoint( aPoint );
}
::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon& rPoly,
const rendering::ViewState& rViewState,
const rendering::RenderState& rRenderState )
{
::basegfx::B2DHomMatrix aMatrix;
::canvas::tools::mergeViewAndRenderTransform(aMatrix,
rViewState,
rRenderState);
::basegfx::B2DPolyPolygon aTemp( rPoly );
aTemp.transform( aMatrix );
return ::PolyPolygon( aTemp );
}
::BitmapEx transformBitmap( const BitmapEx& rBitmap,
const ::basegfx::B2DHomMatrix& rTransform,
const uno::Sequence< double >& rDeviceColor,
ModulationMode eModulationMode )
{
RTL_LOGFILE_CONTEXT( aLog, "::vclcanvas::tools::transformBitmap()" );
RTL_LOGFILE_CONTEXT_TRACE1( aLog, "::vclcanvas::tools::transformBitmap: 0x%X", &rBitmap );
// calc transformation and size of bitmap to be
// generated. Note, that the translational components are
// deleted from the transformation; this can be handled by
// an offset when painting the bitmap
const Size aBmpSize( rBitmap.GetSizePixel() );
::basegfx::B2DRectangle aDestRect;
bool bCopyBack( false );
// calc effective transformation for bitmap
const ::basegfx::B2DRectangle aSrcRect( 0, 0,
aBmpSize.Width(),
aBmpSize.Height() );
::canvas::tools::calcTransformedRectBounds( aDestRect,
aSrcRect,
rTransform );
// re-center bitmap, such that it's left, top border is
// aligned with (0,0). The method takes the given
// rectangle, and calculates a transformation that maps
// this rectangle unscaled to the origin.
::basegfx::B2DHomMatrix aLocalTransform;
::canvas::tools::calcRectToOriginTransform( aLocalTransform,
aSrcRect,
rTransform );
const bool bModulateColors( eModulationMode == MODULATE_WITH_DEVICECOLOR &&
rDeviceColor.getLength() > 2 );
const double nRedModulation( bModulateColors ? rDeviceColor[0] : 1.0 );
const double nGreenModulation( bModulateColors ? rDeviceColor[1] : 1.0 );
const double nBlueModulation( bModulateColors ? rDeviceColor[2] : 1.0 );
const double nAlphaModulation( bModulateColors && rDeviceColor.getLength() > 3 ?
rDeviceColor[3] : 1.0 );
Bitmap aSrcBitmap( rBitmap.GetBitmap() );
Bitmap aSrcAlpha;
// differentiate mask and alpha channel (on-off
// vs. multi-level transparency)
if( rBitmap.IsTransparent() )
{
if( rBitmap.IsAlpha() )
aSrcAlpha = rBitmap.GetAlpha().GetBitmap();
else
aSrcAlpha = rBitmap.GetMask();
}
ScopedBitmapReadAccess pReadAccess( aSrcBitmap.AcquireReadAccess(),
aSrcBitmap );
ScopedBitmapReadAccess pAlphaReadAccess( rBitmap.IsTransparent() ?
aSrcAlpha.AcquireReadAccess() :
(BitmapReadAccess*)NULL,
aSrcAlpha );
if( pReadAccess.get() == NULL ||
(pAlphaReadAccess.get() == NULL && rBitmap.IsTransparent()) )
{
// TODO(E2): Error handling!
ENSURE_OR_THROW( false,
"transformBitmap(): could not access source bitmap" );
}
// mapping table, to translate pAlphaReadAccess' pixel
// values into destination alpha values (needed e.g. for
// paletted 1-bit masks).
sal_uInt8 aAlphaMap[256];
if( rBitmap.IsTransparent() )
{
if( rBitmap.IsAlpha() )
{
// source already has alpha channel - 1:1 mapping,
// i.e. aAlphaMap[0]=0,...,aAlphaMap[255]=255.
::o3tl::iota( aAlphaMap, &aAlphaMap[256], 0 );
}
else
{
// mask transparency - determine used palette colors
const BitmapColor& rCol0( pAlphaReadAccess->GetPaletteColor( 0 ) );
const BitmapColor& rCol1( pAlphaReadAccess->GetPaletteColor( 1 ) );
// shortcut for true luminance calculation
// (assumes that palette is grey-level)
aAlphaMap[0] = rCol0.GetRed();
aAlphaMap[1] = rCol1.GetRed();
}
}
// else: mapping table is not used
const Size aDestBmpSize( ::basegfx::fround( aDestRect.getWidth() ),
::basegfx::fround( aDestRect.getHeight() ) );
if( aDestBmpSize.Width() == 0 || aDestBmpSize.Height() == 0 )
return BitmapEx();
Bitmap aDstBitmap( aDestBmpSize, aSrcBitmap.GetBitCount(), &pReadAccess->GetPalette() );
Bitmap aDstAlpha( AlphaMask( aDestBmpSize ).GetBitmap() );
{
// just to be on the safe side: let the
// ScopedAccessors get destructed before
// copy-constructing the resulting bitmap. This will
// rule out the possibility that cached accessor data
// is not yet written back.
ScopedBitmapWriteAccess pWriteAccess( aDstBitmap.AcquireWriteAccess(),
aDstBitmap );
ScopedBitmapWriteAccess pAlphaWriteAccess( aDstAlpha.AcquireWriteAccess(),
aDstAlpha );
if( pWriteAccess.get() != NULL &&
pAlphaWriteAccess.get() != NULL &&
rTransform.isInvertible() )
{
// we're doing inverse mapping here, i.e. mapping
// points from the destination bitmap back to the
// source
::basegfx::B2DHomMatrix aTransform( aLocalTransform );
aTransform.invert();
// for the time being, always read as ARGB
for( int y=0; y<aDestBmpSize.Height(); ++y )
{
if( bModulateColors )
{
// TODO(P2): Have different branches for
// alpha-only modulation (color
// modulations eq. 1.0)
// modulate all color channels with given
// values
// differentiate mask and alpha channel (on-off
// vs. multi-level transparency)
if( rBitmap.IsTransparent() )
{
// Handling alpha and mask just the same...
for( int x=0; x<aDestBmpSize.Width(); ++x )
{
::basegfx::B2DPoint aPoint(x,y);
aPoint *= aTransform;
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
{
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
}
else
{
// modulate alpha with
// nAlphaModulation. This is a
// little bit verbose, formula
// is 255 - (255-pixAlpha)*nAlphaModulation
// (invert 'alpha' pixel value,
// to get the standard alpha
// channel behaviour)
pAlphaWriteAccess->SetPixel( y, x,
BitmapColor(
255U -
static_cast<sal_uInt8>(
nAlphaModulation*
(255U
- aAlphaMap[ pAlphaReadAccess->GetPixel(
nSrcY,
nSrcX ).GetIndex() ] ) + .5 ) ) );
BitmapColor aColor( pReadAccess->GetPixel( nSrcY,
nSrcX ) );
aColor.SetRed(
static_cast<sal_uInt8>(
nRedModulation *
aColor.GetRed() + .5 ));
aColor.SetGreen(
static_cast<sal_uInt8>(
nGreenModulation *
aColor.GetGreen() + .5 ));
aColor.SetBlue(
static_cast<sal_uInt8>(
nBlueModulation *
aColor.GetBlue() + .5 ));
pWriteAccess->SetPixel( y, x,
aColor );
}
}
}
else
{
for( int x=0; x<aDestBmpSize.Width(); ++x )
{
::basegfx::B2DPoint aPoint(x,y);
aPoint *= aTransform;
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
{
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
}
else
{
// modulate alpha with
// nAlphaModulation. This is a
// little bit verbose, formula
// is 255 - 255*nAlphaModulation
// (invert 'alpha' pixel value,
// to get the standard alpha
// channel behaviour)
pAlphaWriteAccess->SetPixel( y, x,
BitmapColor(
255U -
static_cast<sal_uInt8>(
nAlphaModulation*255.0
+ .5 ) ) );
BitmapColor aColor( pReadAccess->GetPixel( nSrcY,
nSrcX ) );
aColor.SetRed(
static_cast<sal_uInt8>(
nRedModulation *
aColor.GetRed() + .5 ));
aColor.SetGreen(
static_cast<sal_uInt8>(
nGreenModulation *
aColor.GetGreen() + .5 ));
aColor.SetBlue(
static_cast<sal_uInt8>(
nBlueModulation *
aColor.GetBlue() + .5 ));
pWriteAccess->SetPixel( y, x,
aColor );
}
}
}
}
else
{
// differentiate mask and alpha channel (on-off
// vs. multi-level transparency)
if( rBitmap.IsTransparent() )
{
// Handling alpha and mask just the same...
for( int x=0; x<aDestBmpSize.Width(); ++x )
{
::basegfx::B2DPoint aPoint(x,y);
aPoint *= aTransform;
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
{
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
}
else
{
pAlphaWriteAccess->SetPixel( y, x,
aAlphaMap[
pAlphaReadAccess->GetPixel( nSrcY,
nSrcX ) ] );
pWriteAccess->SetPixel( y, x, pReadAccess->GetPixel( nSrcY,
nSrcX ) );
}
}
}
else
{
for( int x=0; x<aDestBmpSize.Width(); ++x )
{
::basegfx::B2DPoint aPoint(x,y);
aPoint *= aTransform;
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
{
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
}
else
{
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(0) );
pWriteAccess->SetPixel( y, x, pReadAccess->GetPixel( nSrcY,
nSrcX ) );
}
}
}
}
}
bCopyBack = true;
}
else
{
// TODO(E2): Error handling!
ENSURE_OR_THROW( false,
"transformBitmap(): could not access bitmap" );
}
}
if( bCopyBack )
return BitmapEx( aDstBitmap, AlphaMask( aDstAlpha ) );
else
return BitmapEx();
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|