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 INCLUDED_VCL_BITMAPEX_HXX 21 #define INCLUDED_VCL_BITMAPEX_HXX 22 23 #include <vcl/dllapi.h> 24 #include <vcl/alpha.hxx> 25 #include <vcl/Scanline.hxx> 26 #include <tools/color.hxx> 27 #include <tools/degree.hxx> 28 #include <tools/solar.h> 29 30 #include <sal/types.h> 31 32 namespace com::sun::star::rendering { 33 class XBitmapCanvas; 34 } 35 namespace com::sun::star::uno { template <class interface_type> class Reference; } 36 namespace basegfx { class BColorModifierStack; } 37 38 class SAL_WARN_UNUSED VCL_DLLPUBLIC BitmapEx 39 { 40 public: 41 42 BitmapEx(); 43 explicit BitmapEx( const OUString& rIconName ); 44 BitmapEx( const BitmapEx& rBitmapEx ); 45 BitmapEx( const BitmapEx& rBitmapEx, Point aSrc, Size aSize ); 46 BitmapEx(Size aSize, vcl::PixelFormat ePixelFormat); 47 explicit BitmapEx( const Bitmap& rBmp ); 48 BitmapEx( const Bitmap& rBmp, const Bitmap& rMask ); 49 BitmapEx( const Bitmap& rBmp, const AlphaMask& rAlphaMask ); 50 BitmapEx( const Bitmap& rBmp, const Color& rTransparentColor ); 51 52 BitmapEx& operator=( const BitmapEx& rBitmapEx ); operator =(const Bitmap & rBitmap)53 BitmapEx& operator=( const Bitmap& rBitmap ) { return operator=(BitmapEx(rBitmap)); } 54 bool operator==( const BitmapEx& rBitmapEx ) const; operator !=(const BitmapEx & rBitmapEx) const55 bool operator!=( const BitmapEx& rBitmapEx ) const { return !(*this==rBitmapEx); } 56 57 bool IsEmpty() const; 58 void SetEmpty(); 59 void Clear(); 60 61 void Draw( OutputDevice* pOutDev, 62 const Point& rDestPt ) const; 63 void Draw( OutputDevice* pOutDev, 64 const Point& rDestPt, const Size& rDestSize ) const; 65 66 Bitmap GetBitmap( Color aTransparentReplaceColor ) const; 67 /// Gives direct access to the contained bitmap. 68 const Bitmap& GetBitmap() const; 69 70 bool IsAlpha() const; 71 AlphaMask GetAlpha() const; 72 GetSizePixel() const73 const Size& GetSizePixel() const { return maBitmapSize; } 74 void SetSizePixel(const Size& rNewSize); 75 GetPrefSize() const76 const Size& GetPrefSize() const { return maBitmap.GetPrefSize(); } SetPrefSize(const Size & rPrefSize)77 void SetPrefSize( const Size& rPrefSize ) { maBitmap.SetPrefSize( rPrefSize ); } 78 GetPrefMapMode() const79 const MapMode& GetPrefMapMode() const { return maBitmap.GetPrefMapMode(); } SetPrefMapMode(const MapMode & rPrefMapMode)80 void SetPrefMapMode( const MapMode& rPrefMapMode ) { maBitmap.SetPrefMapMode( rPrefMapMode ); } 81 getPixelFormat() const82 vcl::PixelFormat getPixelFormat() const 83 { 84 return maBitmap.getPixelFormat(); 85 } 86 87 sal_Int64 GetSizeBytes() const; 88 BitmapChecksum GetChecksum() const; 89 90 /** Convert bitmap format 91 92 @param eConversion 93 The format this bitmap should be converted to. 94 95 @return true, if the conversion was completed successfully. 96 */ 97 bool Convert( BmpConversion eConversion ); 98 99 /** Crop the bitmap 100 101 @param rRectPixel 102 A rectangle specifying the crop amounts on all four sides of 103 the bitmap. If the upper left corner of the bitmap is assigned 104 (0,0), then this method cuts out the given rectangle from the 105 bitmap. Note that the rectangle is clipped to the bitmap's 106 dimension, i.e. negative left,top rectangle coordinates or 107 exceeding width or height is ignored. 108 109 @return true, if cropping was performed successfully. If 110 nothing had to be cropped, because e.g. the crop rectangle 111 included the bitmap, false is returned, too! 112 */ 113 bool Crop( const tools::Rectangle& rRectPixel ); 114 115 /** Expand the bitmap by pixel padding 116 117 @param nDX 118 Number of pixel to pad at the right border of the bitmap 119 120 @param nDY 121 Number of scanlines to pad at the bottom border of the bitmap 122 123 @param bExpandTransparent 124 Whether to expand the transparency color or not. 125 */ 126 void Expand( 127 sal_Int32 nDX, sal_Int32 nDY, 128 bool bExpandTransparent = false ); 129 130 /** Copy a rectangular area from another bitmap 131 132 @param rRectDst 133 Destination rectangle in this bitmap. This is clipped to the 134 bitmap dimensions. 135 136 @param rRectSrc 137 Source rectangle in pBmpSrc. This is clipped to the source 138 bitmap dimensions. Note further that no scaling takes place 139 during this copy operation, i.e. only the minimum of source 140 and destination rectangle's width and height are used. 141 142 @param pBmpExSrc 143 The source bitmap to copy from. If this argument is NULL, or 144 equal to the object this method is called on, copying takes 145 place within the same bitmap. 146 147 @return true, if the operation completed successfully. false 148 is not only returned when the operation failed, but also if 149 nothing had to be done, e.g. because one of the rectangles are 150 empty. 151 */ 152 bool CopyPixel( 153 const tools::Rectangle& rRectDst, 154 const tools::Rectangle& rRectSrc, 155 const BitmapEx* pBmpExSrc ); 156 157 /** Fill the entire bitmap with the given color 158 159 @param rFillColor 160 Color value to use for filling. Set the transparency part of 161 the color to fill the mask. 162 163 @return true, if the operation was completed successfully. 164 */ 165 bool Erase( const Color& rFillColor ); 166 167 /** Perform the Invert operation on every pixel 168 169 @return true, if the operation was completed successfully. 170 */ 171 bool Invert(); 172 173 /** Mirror the bitmap 174 175 @param nMirrorFlags 176 About which axis (horizontal, vertical, or both) to mirror 177 178 @return true, if the operation was completed successfully. 179 */ 180 bool Mirror( BmpMirrorFlags nMirrorFlags ); 181 182 /** Scale the bitmap 183 184 @param rNewSize 185 The resulting size of the scaled bitmap 186 187 @param nScaleFlag 188 The algorithm to be used for scaling 189 190 @return true, if the operation was completed successfully. 191 */ 192 bool Scale( 193 const Size& rNewSize, 194 BmpScaleFlag nScaleFlag = BmpScaleFlag::Default ); 195 196 /** Scale the bitmap 197 198 @param rScaleX 199 The scale factor in x direction. 200 201 @param rScaleY 202 The scale factor in y direction. 203 204 @param nScaleFlag 205 The algorithm to be used for scaling 206 207 @return true, if the operation was completed successfully. 208 */ 209 bool Scale( 210 const double& rScaleX, 211 const double& rScaleY, 212 BmpScaleFlag nScaleFlag = BmpScaleFlag::Default ); 213 214 /** Rotate bitmap by the specified angle 215 216 @param nAngle10 217 The rotation angle in tenth of a degree. The bitmap is always rotated around its center. 218 219 @param rFillColor 220 The color to use for filling blank areas. During rotation, the 221 bitmap is enlarged such that the whole rotation result fits 222 in. The empty spaces around that rotated original bitmap are 223 then filled with this color. 224 225 @return true, if the operation was completed successfully. 226 */ 227 bool Rotate( 228 Degree10 nAngle10, 229 const Color& rFillColor ); 230 231 /** Replace all pixel having the search color with the specified color 232 233 @param rSearchColor 234 Color specifying which pixel should be replaced 235 236 @param rReplaceColor 237 Color to be placed in all changed pixel 238 */ 239 void Replace( 240 const Color& rSearchColor, 241 const Color& rReplaceColor ); 242 243 /** Replace all pixel having the search color with the specified color 244 245 @param rSearchColor 246 Color specifying which pixel should be replaced 247 248 @param rReplaceColor 249 Color to be placed in all changed pixel 250 251 @param nTolerance 252 Tolerance value. Specifies the maximal difference between 253 rSearchColor and the individual pixel values, such that the 254 corresponding pixel is still regarded a match. 255 */ 256 void Replace( 257 const Color& rSearchColor, 258 const Color& rReplaceColor, 259 sal_uInt8 nTolerance ); 260 261 /** Replace all pixel having one the search colors with the corresponding replace color 262 263 @param pSearchColors 264 Array of colors specifying which pixel should be replaced 265 266 @param pReplaceColors 267 Array of colors to be placed in all changed pixel 268 269 @param nColorCount 270 Size of the aforementioned color arrays 271 272 @param pTols 273 Tolerance value. Specifies the maximal difference between 274 pSearchColor colors and the individual pixel values, such that 275 the corresponding pixel is still regarded a match. 276 */ 277 void Replace( 278 const Color* pSearchColors, 279 const Color* pReplaceColors, 280 size_t nColorCount ); 281 282 /** Replace all pixel having one the search colors with the corresponding replace color 283 284 @param pSearchColors 285 Array of colors specifying which pixel should be replaced 286 287 @param rReplaceColors 288 Array of colors to be placed in all changed pixel 289 290 @param nColorCount 291 Size of the aforementioned color arrays 292 293 @param pTols 294 Tolerance value. Specifies the maximal difference between 295 pSearchColor colors and the individual pixel values, such that 296 the corresponding pixel is still regarded a match. 297 298 @return true, if the operation was completed successfully. 299 */ 300 void Replace( 301 const Color* pSearchColors, 302 const Color* pReplaceColors, 303 size_t nColorCount, 304 sal_uInt8 const * pTols ); 305 306 /** Replace transparency with given color. 307 */ 308 void ReplaceTransparency( const Color& rColor ); 309 310 /** Get contours in image */ 311 tools::Polygon GetContour( bool bContourEdgeDetect, const tools::Rectangle* pWorkRect ); 312 313 /** Change various global color characteristics 314 315 @param nLuminancePercent 316 Percent of luminance change, valid range [-100,100]. Values outside this range are clipped to the valid range. 317 318 @param nContrastPercent 319 Percent of contrast change, valid range [-100,100]. Values outside this range are clipped to the valid range. 320 321 @param nChannelRPercent 322 Percent of red channel change, valid range [-100,100]. Values outside this range are clipped to the valid range. 323 324 @param nChannelGPercent 325 Percent of green channel change, valid range [-100,100]. Values outside this range are clipped to the valid range. 326 327 @param nChannelBPercent 328 Percent of blue channel change, valid range [-100,100]. Values outside this range are clipped to the valid range. 329 330 @param fGamma 331 Exponent of the gamma function applied to the bitmap. The 332 value 1.0 results in no change, the valid range is 333 (0.0,10.0]. Values outside this range are regarded as 1.0. 334 335 @param bInvert 336 If true, invert the channel values with the logical 'not' operator 337 338 @param msoBrightness 339 Use the same formula for brightness as used by MSOffice. 340 341 @return true, if the operation was completed successfully. 342 */ 343 bool Adjust( 344 short nLuminancePercent, 345 short nContrastPercent, 346 short nChannelRPercent, 347 short nChannelGPercent, 348 short nChannelBPercent, 349 double fGamma = 1.0, 350 bool bInvert = false, 351 bool msoBrightness = false ); 352 353 /** Get alpha at given position 354 355 @param nX 356 integer X-Position in Bitmap 357 358 @param nY 359 integer Y-Position in Bitmap 360 361 @return alpha value in the range of [0 .. 255] where 362 0 is fully transparent, 255 is not transparent 363 */ 364 sal_uInt8 GetAlpha( 365 sal_Int32 nX, 366 sal_Int32 nY) const; 367 368 /** Get pixel color (including alpha) at given position 369 370 @param nX 371 integer X-Position in Bitmap 372 373 @param nY 374 integer Y-Position in Bitmap 375 */ 376 ::Color GetPixelColor( 377 sal_Int32 nX, 378 sal_Int32 nY) const; 379 380 /** Create transformed Bitmap 381 382 @param fWidth 383 The target width in pixels 384 385 @param fHeight 386 The target height in pixels 387 388 @param rTransformation 389 The back transformation for each pixel in (0 .. fWidth),(0 .. fHeight) to 390 local pixel coordinates 391 */ 392 [[nodiscard]] 393 BitmapEx TransformBitmapEx( 394 double fWidth, 395 double fHeight, 396 const basegfx::B2DHomMatrix& rTransformation) const; 397 398 /** Create transformed Bitmap 399 400 @param rTransformation 401 The transformation from unit coordinates to the unit range 402 403 @param rVisibleRange 404 The relative visible range in unit coordinates, relative to (0,0,1,1) which 405 defines the whole target area 406 407 @param fMaximumArea 408 A limitation for the maximum size of pixels to use for the result 409 410 The target size of the result bitmap is defined by transforming the given 411 rTargetRange with the given rTransformation; the area of the result is 412 linearly scaled to not exceed the given fMaximumArea 413 414 @return The transformed bitmap 415 */ 416 [[nodiscard]] 417 BitmapEx getTransformed( 418 const basegfx::B2DHomMatrix& rTransformation, 419 const basegfx::B2DRange& rVisibleRange, 420 double fMaximumArea) const; 421 422 /** Create ColorStack-modified version of this BitmapEx 423 424 @param rBColorModifierStack 425 A ColrModifierStack which defines how each pixel has to be modified 426 */ 427 [[nodiscard]] 428 BitmapEx ModifyBitmapEx( const basegfx::BColorModifierStack& rBColorModifierStack) const; 429 430 [[nodiscard]] 431 static BitmapEx AutoScaleBitmap( BitmapEx const & aBitmap, const tools::Long aStandardSize ); 432 433 /// populate from a canvas implementation 434 bool Create( 435 const css::uno::Reference< css::rendering::XBitmapCanvas > &xBitmapCanvas, 436 const Size &rSize ); 437 438 void setAlphaFrom( sal_uInt8 cIndexFrom, sal_Int8 nAlphaTo ); 439 440 void AdjustTransparency( sal_uInt8 cTrans ); 441 442 void CombineMaskOr(Color maskColor, sal_uInt8 nTol); 443 444 /** 445 * Retrieves the color model data we need for the XImageConsumer stuff. 446 */ 447 void GetColorModel(css::uno::Sequence< sal_Int32 >& rRGBPalette, 448 sal_uInt32& rnRedMask, sal_uInt32& rnGreenMask, sal_uInt32& rnBlueMask, sal_uInt32& rnAlphaMask, sal_uInt32& rnTransparencyIndex, 449 sal_uInt32& rnWidth, sal_uInt32& rnHeight, sal_uInt8& rnBitCount); 450 ImplGetBitmapSalBitmap() const451 SAL_DLLPRIVATE std::shared_ptr<SalBitmap> const & ImplGetBitmapSalBitmap() const { return maBitmap.ImplGetSalBitmap(); } 452 453 454 private: 455 friend class ImpGraphic; 456 friend class OutputDevice; 457 friend bool VCL_DLLPUBLIC WriteDIBBitmapEx(const BitmapEx& rSource, SvStream& rOStm); 458 friend bool VCL_DLLPUBLIC ReadRawDIB(BitmapEx& rTarget, const unsigned char* pBuf, 459 const ScanlineFormat nFormat, 460 const int nHeight, 461 const int nStride); 462 463 void loadFromIconTheme( const OUString& rIconName ); 464 465 Bitmap maBitmap; 466 Bitmap maAlphaMask; 467 Size maBitmapSize; 468 }; 469 470 471 /** Create a blend frame as BitmapEx 472 473 @param nAlpha 474 The blend value defines how strong the frame will be blended with the 475 existing content, 255 == full coverage, 0 == no frame will be drawn 476 477 @param aColorTopLeft, aColorBottomRight 478 The colors defining the frame. These colors are linearly interpolated from 479 aColorTopLeft and aColorBottomRight using the width and height of the area 480 481 @param rSize 482 The size of the frame in pixels 483 */ 484 BitmapEx VCL_DLLPUBLIC createBlendFrame( 485 const Size& rSize, 486 sal_uInt8 nAlpha, 487 Color aColorTopLeft, 488 Color aColorBottomRight); 489 490 491 /** Create a blend frame as BitmapEx 492 493 @param nAlpha 494 The blend value defines how strong the frame will be blended with the 495 existing content, 255 == full coverage, 0 == no frame will be drawn 496 497 @param aColorTopLeft, aColorBottomRight, aColorTopRight, aColorBottomLeft 498 The colors defining the frame. 499 500 @param rSize 501 The size of the frame in pixels 502 */ 503 BitmapEx createBlendFrame( 504 const Size& rSize, 505 sal_uInt8 nAlpha, 506 Color aColorTopLeft, 507 Color aColorTopRight, 508 Color aColorBottomRight, 509 Color aColorBottomLeft); 510 511 #endif // INCLUDED_VCL_BITMAPEX_HXX 512 513 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ 514