[SVGDom] Initial SVGLength support

Mostly plumb new length types, but also introduce a stateful parser,
rect shape and named color support.

R=reed@google.com,robertphillips@google.com,stephana@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2202053002

Review-Url: https://codereview.chromium.org/2202053002

1 files changed, 40 insertions, 0 deletions

diff --git a/experimental/svg/model/SkSVGRect.h b/experimental/svg/model/SkSVGRect.h
new file mode 100644
index 0000000000..b4cd363d77
--- /dev/null
+++ b/experimental/svg/model/SkSVGRect.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSVGRect_DEFINED
+#define SkSVGRect_DEFINED
+
+#include "SkSVGShape.h"
+#include "SkSVGTypes.h"
+
+class SkSVGRect final : public SkSVGShape {
+public:
+    virtual ~SkSVGRect() = default;
+    static sk_sp<SkSVGRect> Make() { return sk_sp<SkSVGRect>(new SkSVGRect()); }
+
+    void setX(const SkSVGLength&);
+    void setY(const SkSVGLength&);
+    void setWidth(const SkSVGLength&);
+    void setHeight(const SkSVGLength&);
+
+protected:
+    void onSetAttribute(SkSVGAttribute, const SkSVGValue&) override;
+
+    void onDraw(SkCanvas*, const SkSVGLengthContext&, const SkPaint&) const override;
+
+private:
+    SkSVGRect();
+
+    SkSVGLength fX      = SkSVGLength(0);
+    SkSVGLength fY      = SkSVGLength(0);
+    SkSVGLength fWidth  = SkSVGLength(0);
+    SkSVGLength fHeight = SkSVGLength(0);
+
+    typedef SkSVGShape INHERITED;
+};
+
+#endif // SkSVGRect_DEFINED