sky/engine/core/painting/Canvas.idl

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// TODO(mpcomplete): Figure out a better SkMatrix representation.
interface Canvas {
  // Height and width are used for culling optimizations and do not necessarily
  // imply that the Canvas is backed by a buffer with any specific bounds.
  readonly attribute float height;
  readonly attribute float width;

  void save();
  // TODO(jackson): Paint should be optional, but making it optional causes crash
  void saveLayer(Rect bounds, /* optional */ Paint paint);
  void restore();

  void translate(float dx, float dy);
  void scale(float sx, float sy);
  void rotate(float radians);
  void skew(float sx, float sy);
  void concat(Float32List matrix4);

  void clipRect(Rect rect);
  void clipRRect(RRect rrect);
  void clipPath(Path path);

  void drawLine(float x0, float y0, float x1, float y1, Paint paint);
  void drawPicture(Picture picture);
  void drawPaint(Paint paint);
  void drawRect(Rect rect, Paint paint);
  void drawRRect(RRect rrect, Paint paint);
  void drawOval(Rect rect, Paint paint);
  void drawCircle(float x, float y, float radius, Paint paint);
  void drawPath(Path path, Paint paint);
  void drawImage(Image image, float x, float y, Paint paint);
};