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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef _SV_BMPACC_HXX
21 : #define _SV_BMPACC_HXX
22 :
23 : #include <tools/solar.h>
24 : #include <vcl/dllapi.h>
25 : #include <vcl/salbtype.hxx>
26 : #include <vcl/bitmap.hxx>
27 :
28 : // --------------------
29 : // - Access defines -
30 : // --------------------
31 :
32 : #define DECL_FORMAT_GETPIXEL( Format ) \
33 : static BitmapColor GetPixelFor##Format( ConstScanline pScanline, long nX, const ColorMask& rMask );
34 :
35 : #define DECL_FORMAT_SETPIXEL( Format ) \
36 : static void SetPixelFor##Format( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask );
37 :
38 : #define DECL_FORMAT( Format ) \
39 : DECL_FORMAT_GETPIXEL( Format ) \
40 : DECL_FORMAT_SETPIXEL( Format )
41 :
42 : #define IMPL_FORMAT_GETPIXEL( Format ) \
43 : BitmapColor BitmapReadAccess::GetPixelFor##Format( ConstScanline pScanline, long nX, const ColorMask& rMask )
44 :
45 : #define IMPL_FORMAT_GETPIXEL_NOMASK( Format ) \
46 : BitmapColor BitmapReadAccess::GetPixelFor##Format( ConstScanline pScanline, long nX, const ColorMask& )
47 :
48 : #define IMPL_FORMAT_SETPIXEL( Format ) \
49 : void BitmapReadAccess::SetPixelFor##Format( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask )
50 :
51 : #define IMPL_FORMAT_SETPIXEL_NOMASK( Format ) \
52 : void BitmapReadAccess::SetPixelFor##Format( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& )
53 :
54 : #define CASE_FORMAT( Format ) \
55 : case( BMP_FORMAT##Format ): \
56 : { \
57 : mFncGetPixel = GetPixelFor##Format;\
58 : mFncSetPixel = SetPixelFor##Format;\
59 : } \
60 : break;
61 :
62 :
63 : // --------------------
64 : // - Access functions -
65 : // --------------------
66 :
67 : typedef BitmapColor (*FncGetPixel)( ConstScanline pScanline, long nX, const ColorMask& rMask );
68 : typedef void (*FncSetPixel)( Scanline pScanline, long nX, const BitmapColor& rBitmapColor, const ColorMask& rMask );
69 :
70 : // --------------------
71 : // - BitmapReadAccess -
72 : // --------------------
73 :
74 : class VCL_DLLPUBLIC BitmapReadAccess
75 : {
76 : friend class BitmapWriteAccess;
77 :
78 : private:
79 :
80 : BitmapReadAccess() {}
81 : BitmapReadAccess( const BitmapReadAccess& ) {}
82 : BitmapReadAccess& operator=( const BitmapReadAccess& ) { return *this; }
83 :
84 : protected:
85 : Bitmap maBitmap;
86 : BitmapBuffer* mpBuffer;
87 : Scanline* mpScanBuf;
88 : ColorMask maColorMask;
89 : FncGetPixel mFncGetPixel;
90 : FncSetPixel mFncSetPixel;
91 : sal_Bool mbModify;
92 :
93 :
94 : SAL_DLLPRIVATE void ImplCreate( Bitmap& rBitmap );
95 : SAL_DLLPRIVATE void ImplDestroy();
96 : SAL_DLLPRIVATE sal_Bool ImplSetAccessPointers( sal_uLong nFormat );
97 :
98 : public:
99 :
100 : SAL_DLLPRIVATE void ImplZeroInitUnusedBits();
101 0 : SAL_DLLPRIVATE BitmapBuffer* ImplGetBitmapBuffer() const { return mpBuffer; }
102 :
103 : DECL_FORMAT( _1BIT_MSB_PAL )
104 : DECL_FORMAT( _1BIT_LSB_PAL )
105 : DECL_FORMAT( _4BIT_MSN_PAL )
106 : DECL_FORMAT( _4BIT_LSN_PAL )
107 : DECL_FORMAT( _8BIT_PAL )
108 : DECL_FORMAT( _8BIT_TC_MASK )
109 : DECL_FORMAT( _16BIT_TC_MSB_MASK )
110 : DECL_FORMAT( _16BIT_TC_LSB_MASK )
111 : DECL_FORMAT( _24BIT_TC_BGR )
112 : DECL_FORMAT( _24BIT_TC_RGB )
113 : DECL_FORMAT( _24BIT_TC_MASK )
114 : DECL_FORMAT( _32BIT_TC_ABGR )
115 : DECL_FORMAT( _32BIT_TC_ARGB )
116 : DECL_FORMAT( _32BIT_TC_BGRA )
117 : DECL_FORMAT( _32BIT_TC_RGBA )
118 : DECL_FORMAT( _32BIT_TC_MASK )
119 : protected:
120 : BitmapReadAccess( Bitmap& rBitmap, sal_Bool bModify );
121 :
122 : public:
123 : BitmapReadAccess( Bitmap& rBitmap );
124 : virtual ~BitmapReadAccess();
125 :
126 : inline sal_Bool operator!() const;
127 :
128 : inline long Width() const;
129 : inline long Height() const;
130 : inline Point TopLeft() const;
131 : inline Point BottomRight() const;
132 :
133 : inline sal_Bool IsTopDown() const;
134 : inline sal_Bool IsBottomUp() const;
135 :
136 : inline sal_uLong GetScanlineFormat() const;
137 : inline sal_uLong GetScanlineSize() const;
138 :
139 : inline sal_uInt16 GetBitCount() const;
140 : inline BitmapColor GetBestMatchingColor( const BitmapColor& rBitmapColor );
141 :
142 : inline Scanline GetBuffer() const;
143 : inline Scanline GetScanline( long nY ) const;
144 :
145 : inline sal_Bool HasPalette() const;
146 : inline const BitmapPalette& GetPalette() const;
147 : inline sal_uInt16 GetPaletteEntryCount() const;
148 : inline const BitmapColor& GetPaletteColor( sal_uInt16 nColor ) const;
149 : inline const BitmapColor& GetBestPaletteColor( const BitmapColor& rBitmapColor ) const;
150 : sal_uInt16 GetBestPaletteIndex( const BitmapColor& rBitmapColor ) const;
151 :
152 : inline sal_Bool HasColorMask() const;
153 : inline ColorMask& GetColorMask() const;
154 :
155 : inline BitmapColor GetPixelFromData( const sal_uInt8* pData, long nX ) const;
156 : inline void SetPixelOnData( sal_uInt8* pData, long nX, const BitmapColor& rBitmapColor );
157 : inline BitmapColor GetPixel( long nY, long nX ) const;
158 : inline BitmapColor GetColor( long nY, long nX ) const;
159 : inline sal_uInt8 GetLuminance( long nY, long nX ) const;
160 : };
161 :
162 : // ---------------------
163 : // - BitmapWriteAccess -
164 : // ---------------------
165 :
166 : class VCL_DLLPUBLIC BitmapWriteAccess : public BitmapReadAccess
167 : {
168 : public:
169 :
170 : BitmapWriteAccess( Bitmap& rBitmap );
171 : virtual ~BitmapWriteAccess();
172 :
173 : void CopyScanline( long nY, const BitmapReadAccess& rReadAcc );
174 : void CopyScanline( long nY, ConstScanline aSrcScanline,
175 : sal_uLong nSrcScanlineFormat, sal_uLong nSrcScanlineSize );
176 :
177 : void CopyBuffer( const BitmapReadAccess& rReadAcc );
178 :
179 : inline void SetPalette( const BitmapPalette& rPalette );
180 : inline void SetPaletteEntryCount( sal_uInt16 nCount );
181 : inline void SetPaletteColor( sal_uInt16 nColor, const BitmapColor& rBitmapColor );
182 :
183 : inline void SetPixel( long nY, long nX, const BitmapColor& rBitmapColor );
184 :
185 : void SetLineColor( const Color& rColor );
186 :
187 : void SetFillColor( const Color& rColor );
188 :
189 : void Erase( const Color& rColor );
190 :
191 : void DrawLine( const Point& rStart, const Point& rEnd );
192 :
193 : void FillRect( const Rectangle& rRect );
194 : void DrawRect( const Rectangle& rRect );
195 :
196 : private:
197 :
198 : BitmapColor* mpLineColor;
199 : BitmapColor* mpFillColor;
200 :
201 : BitmapWriteAccess() {}
202 : BitmapWriteAccess( const BitmapWriteAccess& ) : BitmapReadAccess() {}
203 : BitmapWriteAccess& operator=( const BitmapWriteAccess& ) { return *this; }
204 : };
205 :
206 : // -----------
207 : // - Inlines -
208 : // -----------
209 :
210 392 : inline sal_Bool BitmapReadAccess::operator!() const
211 : {
212 392 : return( mpBuffer == NULL );
213 : }
214 :
215 : // ------------------------------------------------------------------
216 :
217 250 : inline long BitmapReadAccess::Width() const
218 : {
219 250 : return( mpBuffer ? mpBuffer->mnWidth : 0L );
220 : }
221 :
222 : // ------------------------------------------------------------------
223 :
224 367 : inline long BitmapReadAccess::Height() const
225 : {
226 367 : return( mpBuffer ? mpBuffer->mnHeight : 0L );
227 : }
228 :
229 : // ------------------------------------------------------------------
230 :
231 : inline Point BitmapReadAccess::TopLeft() const
232 : {
233 : return Point();
234 : }
235 :
236 : // ------------------------------------------------------------------
237 :
238 : inline Point BitmapReadAccess::BottomRight() const
239 : {
240 : return Point( Width() - 1L, Height() - 1L );
241 : }
242 :
243 : // ------------------------------------------------------------------
244 :
245 6 : inline sal_Bool BitmapReadAccess::IsTopDown() const
246 : {
247 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
248 6 : return( mpBuffer ? sal::static_int_cast<sal_Bool>( BMP_SCANLINE_ADJUSTMENT( mpBuffer->mnFormat ) == BMP_FORMAT_TOP_DOWN ) : sal_False );
249 : }
250 :
251 : // ------------------------------------------------------------------
252 :
253 6 : inline sal_Bool BitmapReadAccess::IsBottomUp() const
254 : {
255 6 : return !IsTopDown();
256 : }
257 :
258 : // ------------------------------------------------------------------
259 :
260 583 : inline sal_uLong BitmapReadAccess::GetScanlineFormat() const
261 : {
262 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
263 583 : return( mpBuffer ? BMP_SCANLINE_FORMAT( mpBuffer->mnFormat ) : 0UL );
264 : }
265 :
266 : // ------------------------------------------------------------------
267 :
268 619 : inline sal_uLong BitmapReadAccess::GetScanlineSize() const
269 : {
270 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
271 619 : return( mpBuffer ? mpBuffer->mnScanlineSize : 0UL );
272 : }
273 :
274 : // ------------------------------------------------------------------
275 :
276 1413 : inline sal_uInt16 BitmapReadAccess::GetBitCount() const
277 : {
278 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
279 1413 : return( mpBuffer ? mpBuffer->mnBitCount : 0 );
280 : }
281 :
282 : // ------------------------------------------------------------------
283 :
284 38 : inline BitmapColor BitmapReadAccess::GetBestMatchingColor( const BitmapColor& rBitmapColor )
285 : {
286 38 : if( HasPalette() )
287 38 : return BitmapColor( (sal_uInt8) GetBestPaletteIndex( rBitmapColor ) );
288 : else
289 0 : return rBitmapColor;
290 : }
291 :
292 : // ------------------------------------------------------------------
293 :
294 179 : inline Scanline BitmapReadAccess::GetBuffer() const
295 : {
296 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
297 179 : return( mpBuffer ? mpBuffer->mpBits : NULL );
298 : }
299 :
300 : // ------------------------------------------------------------------
301 :
302 852 : inline Scanline BitmapReadAccess::GetScanline( long nY ) const
303 : {
304 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
305 : DBG_ASSERT( nY < mpBuffer->mnHeight, "y-coordinate out of range!" );
306 852 : return( mpBuffer ? mpScanBuf[ nY ] : NULL );
307 : }
308 :
309 : // ------------------------------------------------------------------
310 :
311 4146 : inline sal_Bool BitmapReadAccess::HasPalette() const
312 : {
313 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
314 4146 : return( mpBuffer && !!mpBuffer->maPalette );
315 : }
316 :
317 : // ------------------------------------------------------------------
318 :
319 35 : inline const BitmapPalette& BitmapReadAccess::GetPalette() const
320 : {
321 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
322 35 : return mpBuffer->maPalette;
323 : }
324 :
325 : // ------------------------------------------------------------------
326 :
327 42 : inline sal_uInt16 BitmapReadAccess::GetPaletteEntryCount() const
328 : {
329 : DBG_ASSERT( HasPalette(), "Bitmap has no palette!" );
330 42 : return( HasPalette() ? mpBuffer->maPalette.GetEntryCount() : 0 );
331 : }
332 :
333 : // ------------------------------------------------------------------
334 :
335 320785 : inline const BitmapColor& BitmapReadAccess::GetPaletteColor( sal_uInt16 nColor ) const
336 : {
337 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
338 : DBG_ASSERT( HasPalette(), "Bitmap has no palette!" );
339 320785 : return mpBuffer->maPalette[ nColor ];
340 : }
341 :
342 : // ------------------------------------------------------------------
343 :
344 0 : inline const BitmapColor& BitmapReadAccess::GetBestPaletteColor( const BitmapColor& rBitmapColor ) const
345 : {
346 0 : return GetPaletteColor( GetBestPaletteIndex( rBitmapColor ) );
347 : }
348 :
349 : // ------------------------------------------------------------------
350 :
351 : inline sal_Bool BitmapReadAccess::HasColorMask() const
352 : {
353 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
354 : const sal_uLong nFormat = BMP_SCANLINE_FORMAT( mpBuffer->mnFormat );
355 :
356 : return( nFormat == BMP_FORMAT_8BIT_TC_MASK ||
357 : nFormat == BMP_FORMAT_16BIT_TC_MSB_MASK ||
358 : nFormat == BMP_FORMAT_16BIT_TC_LSB_MASK ||
359 : nFormat == BMP_FORMAT_24BIT_TC_MASK ||
360 : nFormat == BMP_FORMAT_32BIT_TC_MASK );
361 : }
362 :
363 : // ------------------------------------------------------------------
364 :
365 132 : inline ColorMask& BitmapReadAccess::GetColorMask() const
366 : {
367 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
368 132 : return mpBuffer->maColorMask;
369 : }
370 :
371 : // ------------------------------------------------------------------
372 :
373 2210979 : inline BitmapColor BitmapReadAccess::GetPixel( long nY, long nX ) const
374 : {
375 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
376 : DBG_ASSERT( nX < mpBuffer->mnWidth, "x-coordinate out of range!" );
377 : DBG_ASSERT( nY < mpBuffer->mnHeight, "y-coordinate out of range!" );
378 2210979 : return mFncGetPixel( mpScanBuf[ nY ], nX, maColorMask );
379 : }
380 :
381 : // ------------------------------------------------------------------
382 :
383 0 : inline BitmapColor BitmapReadAccess::GetPixelFromData( const sal_uInt8* pData, long nX ) const
384 : {
385 : DBG_ASSERT( pData, "Access is not valid!" );
386 0 : return mFncGetPixel( pData, nX, maColorMask );
387 : }
388 :
389 : // ------------------------------------------------------------------
390 :
391 0 : inline void BitmapReadAccess::SetPixelOnData( sal_uInt8* pData, long nX, const BitmapColor& rBitmapColor )
392 : {
393 : DBG_ASSERT( pData, "Access is not valid!" );
394 0 : mFncSetPixel( pData, nX, rBitmapColor, maColorMask );
395 0 : }
396 :
397 : // ------------------------------------------------------------------
398 :
399 0 : inline BitmapColor BitmapReadAccess::GetColor( long nY, long nX ) const
400 : {
401 0 : if( !!mpBuffer->maPalette )
402 : {
403 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
404 0 : return mpBuffer->maPalette[ GetPixel( nY, nX ).GetIndex() ];
405 : }
406 : else
407 0 : return GetPixel( nY, nX );
408 : }
409 :
410 : // ------------------------------------------------------------------
411 :
412 0 : inline sal_uInt8 BitmapReadAccess::GetLuminance( long nY, long nX ) const
413 : {
414 0 : return GetColor( nY, nX ).GetLuminance();
415 : }
416 :
417 : // ------------------------------------------------------------------
418 :
419 0 : inline void BitmapWriteAccess::SetPalette( const BitmapPalette& rPalette )
420 : {
421 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
422 0 : mpBuffer->maPalette = rPalette;
423 0 : }
424 :
425 : // ------------------------------------------------------------------
426 :
427 11 : inline void BitmapWriteAccess::SetPaletteEntryCount( sal_uInt16 nCount )
428 : {
429 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
430 11 : mpBuffer->maPalette.SetEntryCount( nCount );
431 11 : }
432 :
433 : // ------------------------------------------------------------------
434 :
435 17482 : inline void BitmapWriteAccess::SetPaletteColor( sal_uInt16 nColor, const BitmapColor& rBitmapColor )
436 : {
437 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
438 : DBG_ASSERT( HasPalette(), "Bitmap has no palette!" );
439 17482 : mpBuffer->maPalette[ nColor ] = rBitmapColor;
440 17482 : }
441 :
442 : // ------------------------------------------------------------------
443 :
444 2589035 : inline void BitmapWriteAccess::SetPixel( long nY, long nX, const BitmapColor& rBitmapColor )
445 : {
446 : DBG_ASSERT( mpBuffer, "Access is not valid!" );
447 : DBG_ASSERT( nX < mpBuffer->mnWidth, "x-coordinate out of range!" );
448 : DBG_ASSERT( nY < mpBuffer->mnHeight, "y-coordinate out of range!" );
449 2589035 : mFncSetPixel( mpScanBuf[ nY ], nX, rBitmapColor, maColorMask );
450 2589035 : }
451 :
452 : #endif // _SV_BMPACC_HXX
453 :
454 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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