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::transparency { 8 9 // PDF 1.7 spec, table 7.2. 10 // Standard separable blend modes. 11 const char kNormal[] = "Normal"; 12 const char kMultiply[] = "Multiply"; 13 const char kScreen[] = "Screen"; 14 const char kOverlay[] = "Overlay"; 15 const char kDarken[] = "Darken"; 16 const char kLighten[] = "Lighten"; 17 const char kColorDodge[] = "ColorDodge"; 18 const char kColorBurn[] = "ColorBurn"; 19 const char kHardLight[] = "HardLight"; 20 const char kSoftLight[] = "SoftLight"; 21 const char kDifference[] = "Difference"; 22 const char kExclusion[] = "Exclusion"; 23 24 // PDF 1.7 spec, table 7.3. 25 // Standard nonseparable blend modes. 26 const char kHue[] = "Hue"; 27 const char kSaturation[] = "Saturation"; 28 const char kColor[] = "Color"; 29 const char kLuminosity[] = "Luminosity"; 30 31 // PDF 1.7 spec, table 7.10. 32 // Entries in a soft-mask dictionary. 33 const char kSoftMaskSubType[] = "S"; 34 const char kAlpha[] = "Alpha"; 35 const char kG[] = "G"; 36 const char kBC[] = "BC"; 37 const char kTR[] = "TR"; 38 39 // PDF 1.7 spec, table 7.13. 40 // Additional entries specific to a transparency group attributes dictionary. 41 const char kGroupSubType[] = "S"; 42 const char kTransparency[] = "Transparency"; 43 const char kCS[] = "CS"; 44 const char kI[] = "I"; 45 46 } // namespace pdfium::transparency 47