| // Copyright 2019 Google LLC. |
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| #ifndef SkPDFGraphicStackState_DEFINED |
| #define SkPDFGraphicStackState_DEFINED |
| |
| #include "include/core/SkColor.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkScalar.h" |
| #include "include/private/base/SkFloatingPoint.h" |
| #include "src/core/SkClipStack.h" |
| |
| class SkDynamicMemoryWStream; |
| |
| // It is important to not confuse SkPDFGraphicStackState with SkPDFGraphicState, the |
| // later being our representation of an object in the PDF file. |
| struct SkPDFGraphicStackState { |
| struct Entry { |
| SkMatrix fMatrix = SkMatrix::I(); |
| uint32_t fClipStackGenID = SkClipStack::kWideOpenGenID; |
| SkColor4f fColor = {SK_FloatNaN, SK_FloatNaN, SK_FloatNaN, SK_FloatNaN}; |
| SkScalar fTextScaleX = 1; // Zero means we don't care what the value is. |
| int fShaderIndex = -1; |
| int fGraphicStateIndex = -1; |
| }; |
| // Must use stack for matrix, and for clip, plus one for no matrix or clip. |
| inline static constexpr int kMaxStackDepth = 2; |
| Entry fEntries[kMaxStackDepth + 1]; |
| int fStackDepth = 0; |
| SkDynamicMemoryWStream* fContentStream; |
| |
| SkPDFGraphicStackState(SkDynamicMemoryWStream* s = nullptr) : fContentStream(s) {} |
| void updateClip(const SkClipStack* clipStack, const SkIRect& bounds); |
| void updateMatrix(const SkMatrix& matrix); |
| void updateDrawingState(const Entry& state); |
| void push(); |
| void pop(); |
| void drainStack(); |
| Entry* currentEntry() { return &fEntries[fStackDepth]; } |
| }; |
| |
| #endif // SkPDFGraphicStackState_DEFINED |