| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkMiniRecorder_DEFINED |
| #define SkMiniRecorder_DEFINED |
| |
| #include "SkRecords.h" |
| #include "SkScalar.h" |
| #include "SkTypes.h" |
| class SkCanvas; |
| |
| // Records small pictures, but only a limited subset of the canvas API, and may fail. |
| class SkMiniRecorder : SkNoncopyable { |
| public: |
| SkMiniRecorder(); |
| ~SkMiniRecorder(); |
| |
| // Try to record an op. Returns false on failure. |
| bool drawPath(const SkPath&, const SkPaint&); |
| bool drawRect(const SkRect&, const SkPaint&); |
| bool drawTextBlob(const SkTextBlob*, SkScalar x, SkScalar y, const SkPaint&); |
| |
| // Detach anything we've recorded as a picture, resetting this SkMiniRecorder. |
| // If cull is nullptr we'll calculate it. |
| sk_sp<SkPicture> detachAsPicture(const SkRect* cull); |
| |
| // Flush anything we've recorded to the canvas, resetting this SkMiniRecorder. |
| // This is logically the same as but rather more efficient than: |
| // sk_sp<SkPicture> pic(this->detachAsPicture(nullptr)); |
| // pic->playback(canvas); |
| void flushAndReset(SkCanvas*); |
| |
| private: |
| enum class State { |
| kEmpty, |
| kDrawPath, |
| kDrawRect, |
| kDrawTextBlob, |
| }; |
| |
| State fState; |
| |
| template <size_t A, size_t B> |
| struct Max { static const size_t val = A > B ? A : B; }; |
| |
| static const size_t kInlineStorage = |
| Max<sizeof(SkRecords::DrawPath), |
| Max<sizeof(SkRecords::DrawRect), |
| sizeof(SkRecords::DrawTextBlob)>::val>::val; |
| SkAlignedSStorage<kInlineStorage> fBuffer; |
| }; |
| |
| #endif//SkMiniRecorder_DEFINED |