Initial SVG backend stubbing

experimental/svg/SkSVGDevice.h

+/*
+ * 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 SkSVGDevice_DEFINED
+#define SkSVGDevice_DEFINED
+
+#include "SkDevice.h"
+
+class SkWStream;
+class SkXMLWriter;
+
+class SkSVGDevice : public SkBaseDevice {
+public:
+    static SkBaseDevice* Create(const SkISize& size, SkWStream* wstream);
+
+    virtual SkImageInfo imageInfo() const SK_OVERRIDE;
+
+protected:
+    virtual void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
+                            const SkPoint[], const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRect(const SkDraw&, const SkRect& r, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawOval(const SkDraw&, const SkRect& oval, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRRect(const SkDraw&, const SkRRect& rr, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPath(const SkDraw&, const SkPath& path,
+                          const SkPaint& paint,
+                          const SkMatrix* prePathMatrix = NULL,
+                          bool pathIsMutable = false) SK_OVERRIDE;
+
+    virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap,
+                            const SkMatrix& matrix, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
+                            int x, int y, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawBitmapRect(const SkDraw&, const SkBitmap&,
+                                const SkRect* srcOrNull, const SkRect& dst,
+                                const SkPaint& paint,
+                                SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE;
+
+    virtual void drawText(const SkDraw&, const void* text, size_t len,
+                          SkScalar x, SkScalar y, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPosText(const SkDraw&, const void* text, size_t len,
+                             const SkScalar pos[], int scalarsPerPos,
+                             const SkPoint& offset, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
+                                const SkPath& path, const SkMatrix* matrix,
+                                const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount,
+                              const SkPoint verts[], const SkPoint texs[],
+                              const SkColor colors[], SkXfermode* xmode,
+                              const uint16_t indices[], int indexCount,
+                              const SkPaint& paint) SK_OVERRIDE;
+
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
+
+private:
+    SkSVGDevice(const SkISize& size, SkWStream* wstream);
+    virtual ~SkSVGDevice();
+
+    void addPaint(const SkPaint& paint);
+    void addTransform(const SkMatrix& t);
+
+    SkXMLWriter*  fWriter;
+    SkBitmap      fLegacyBitmap;
+};
+
+#endif // SkSVGDevice_DEFINED