| // Copyright 2018 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONSTANTS_TRANSPARENCY_H_ |
| #define CONSTANTS_TRANSPARENCY_H_ |
| |
| namespace pdfium { |
| namespace transparency { |
| |
| // PDF 1.7 spec, table 7.2. |
| // Standard separable blend modes. |
| |
| constexpr char kNormal[] = "Normal"; |
| constexpr char kMultiply[] = "Multiply"; |
| constexpr char kScreen[] = "Screen"; |
| constexpr char kOverlay[] = "Overlay"; |
| constexpr char kDarken[] = "Darken"; |
| constexpr char kLighten[] = "Lighten"; |
| constexpr char kColorDodge[] = "ColorDodge"; |
| constexpr char kColorBurn[] = "ColorBurn"; |
| constexpr char kHardLight[] = "HardLight"; |
| constexpr char kSoftLight[] = "SoftLight"; |
| constexpr char kDifference[] = "Difference"; |
| constexpr char kExclusion[] = "Exclusion"; |
| |
| // PDF 1.7 spec, table 7.3. |
| // Standard nonseparable blend modes. |
| |
| constexpr char kHue[] = "Hue"; |
| constexpr char kSaturation[] = "Saturation"; |
| constexpr char kColor[] = "Color"; |
| constexpr char kLuminosity[] = "Luminosity"; |
| |
| // PDF 1.7 spec, table 7.10. |
| // Entries in a soft-mask dictionary. |
| |
| constexpr char kSoftMaskSubType[] = "S"; |
| constexpr char kAlpha[] = "Alpha"; |
| constexpr char kG[] = "G"; |
| constexpr char kBC[] = "BC"; |
| constexpr char kTR[] = "TR"; |
| |
| // PDF 1.7 spec, table 7.13. |
| // Additional entries specific to a transparency group attributes dictionary. |
| |
| constexpr char kGroupSubType[] = "S"; |
| constexpr char kTransparency[] = "Transparency"; |
| constexpr char kCS[] = "CS"; |
| constexpr char kI[] = "I"; |
| |
| } // namespace transparency |
| } // namespace pdfium |
| |
| #endif // CONSTANTS_TRANSPARENCY_H_ |