Index: src/core/SkLatticeIter.h |
diff --git a/src/core/SkLatticeIter.h b/src/core/SkLatticeIter.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e2d767f1c8a5383d2f6d2e1b0bb115129a35156c |
--- /dev/null |
+++ b/src/core/SkLatticeIter.h |
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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 SkLatticeIter_DEFINED |
+#define SkLatticeIter_DEFINED |
+ |
+#include "SkCanvas.h" |
+#include "SkScalar.h" |
+#include "SkTArray.h" |
+ |
+struct SkIRect; |
+struct SkRect; |
+ |
+/** |
+ * Disect a lattice request into an sequence of src-rect / dst-rect pairs |
+ */ |
+class SkLatticeIter { |
+public: |
+ |
+ static bool Valid(int imageWidth, int imageHeight, const SkCanvas::Lattice& lattice); |
+ |
+ SkLatticeIter(int imageWidth, int imageHeight, const SkCanvas::Lattice& lattice, |
+ const SkRect& dst); |
+ |
+ static bool Valid(int imageWidth, int imageHeight, const SkIRect& center); |
+ |
+ SkLatticeIter(int imageWidth, int imageHeight, const SkIRect& center, const SkRect& dst); |
+ |
+ /** |
+ * While it returns true, use src/dst to draw the image/bitmap |
+ */ |
+ bool next(SkRect* src, SkRect* dst); |
+ |
+private: |
+ SkTArray<SkScalar> fSrcX; |
+ SkTArray<SkScalar> fSrcY; |
+ SkTArray<SkScalar> fDstX; |
+ SkTArray<SkScalar> fDstY; |
+ |
+ int fCurrX; |
+ int fCurrY; |
+ bool fDone; |
+}; |
+ |
+#endif |