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- /*
- * 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 "include/core/SkScalar.h"
- #include "include/core/SkTypes.h"
- #include "include/private/SkNoncopyable.h"
- #include "src/core/SkRecords.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
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