1 // Copyright 2021 The PDFium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "constants/transparency.h" 6 7 namespace pdfium { 8 namespace transparency { 9 10 // PDF 1.7 spec, table 7.2. 11 // Standard separable blend modes. 12 const char kNormal[] = "Normal"; 13 const char kMultiply[] = "Multiply"; 14 const char kScreen[] = "Screen"; 15 const char kOverlay[] = "Overlay"; 16 const char kDarken[] = "Darken"; 17 const char kLighten[] = "Lighten"; 18 const char kColorDodge[] = "ColorDodge"; 19 const char kColorBurn[] = "ColorBurn"; 20 const char kHardLight[] = "HardLight"; 21 const char kSoftLight[] = "SoftLight"; 22 const char kDifference[] = "Difference"; 23 const char kExclusion[] = "Exclusion"; 24 25 // PDF 1.7 spec, table 7.3. 26 // Standard nonseparable blend modes. 27 const char kHue[] = "Hue"; 28 const char kSaturation[] = "Saturation"; 29 const char kColor[] = "Color"; 30 const char kLuminosity[] = "Luminosity"; 31 32 // PDF 1.7 spec, table 7.10. 33 // Entries in a soft-mask dictionary. 34 const char kSoftMaskSubType[] = "S"; 35 const char kAlpha[] = "Alpha"; 36 const char kG[] = "G"; 37 const char kBC[] = "BC"; 38 const char kTR[] = "TR"; 39 40 // PDF 1.7 spec, table 7.13. 41 // Additional entries specific to a transparency group attributes dictionary. 42 const char kGroupSubType[] = "S"; 43 const char kTransparency[] = "Transparency"; 44 const char kCS[] = "CS"; 45 const char kI[] = "I"; 46 47 } // namespace transparency 48 } // namespace pdfium 49