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authorGravatar Mike Klein <mtklein@google.com>2015-07-01 16:35:59 -0400
committerGravatar Mike Klein <mtklein@google.com>2015-07-01 16:35:59 -0400
commit478c9e4851eff5feb74dd2f8a14143bec569e1a8 (patch)
tree9acb07514c74296fe7b2b9dd17fa8a6ed907cf30 /src/core/SkMiniRecorder.h
parentaa2a7de0ffaf8f864a7afc68bbd34ccb25876246 (diff)
Revert "Move headers used by headers in include/ to include/private."
Diffstat (limited to 'src/core/SkMiniRecorder.h')
-rw-r--r--src/core/SkMiniRecorder.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/src/core/SkMiniRecorder.h b/src/core/SkMiniRecorder.h
new file mode 100644
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+++ b/src/core/SkMiniRecorder.h
@@ -0,0 +1,50 @@
+/*
+ * 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.
+ 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:
+ // SkAutoTUnref<SkPicture> pic(this->detachAsPicture(SkRect::MakeEmpty()));
+ // 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