/*
 * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

enum CanvasWindingRule { "nonzero", "evenodd" };

interface CanvasRenderingContext2D : CanvasRenderingContext {

    void save();
    void restore();

    void scale(float sx, float sy);
    void rotate(float angle);
    void translate(float tx, float ty);
    void transform(float m11, float m12, float m21, float m22, float dx, float dy);
    void setTransform(float m11, float m12, float m21, float m22, float dx, float dy);

    attribute float globalAlpha;
    [TreatNullAs=NullString] attribute DOMString globalCompositeOperation;

    [RaisesException] CanvasGradient createLinearGradient(float x0, float y0, float x1, float y1);
    [RaisesException] CanvasGradient createRadialGradient(float x0, float y0, float r0, float x1, float y1, float r1);

    attribute float lineWidth;
    [TreatNullAs=NullString] attribute DOMString lineCap;
    [TreatNullAs=NullString] attribute DOMString lineJoin;
    attribute float miterLimit;

    attribute float shadowOffsetX;
    attribute float shadowOffsetY;
    attribute float shadowBlur;
    [TreatNullAs=NullString] attribute DOMString shadowColor;

    void setLineDash(sequence<float> dash);
    sequence<float> getLineDash();
    attribute float lineDashOffset;

    [Custom] attribute Array webkitLineDash;
    attribute float webkitLineDashOffset;

    void clearRect(float x, float y, float width, float height);
    void fillRect(float x, float y, float width, float height);

    void beginPath();

#if defined(ENABLE_CANVAS_PATH) && ENABLE_CANVAS_PATH
    attribute DOMPath currentPath;
#endif

    // FIXME: These methods should be shared with CanvasRenderingContext2D in the CanvasPathMethods interface.
    void closePath();
    void moveTo(float x, float y);
    void lineTo(float x, float y);
    void quadraticCurveTo(float cpx, float cpy, float x, float y);
    void bezierCurveTo(float cp1x, float cp1y, float cp2x, float cp2y, float x, float y);
    [RaisesException] void arcTo(float x1, float y1, float x2, float y2, float radius);
    void rect(float x, float y, float width, float height);
    [RaisesException] void arc(float x, float y, float radius, float startAngle, float endAngle, [Default=Undefined] optional boolean anticlockwise);

    void fill(optional CanvasWindingRule winding);
    void stroke();
    void clip(optional CanvasWindingRule winding);
    boolean isPointInPath(float x, float y, optional CanvasWindingRule winding);
    boolean isPointInStroke(float x, float y);

    // text
    attribute DOMString font;
    attribute DOMString textAlign;
    attribute DOMString textBaseline;

    TextMetrics measureText(DOMString text);

    // other

    void setAlpha([Default=Undefined] optional float alpha);
    void setCompositeOperation([Default=Undefined] optional DOMString compositeOperation);

#if !defined(LANGUAGE_CPP) || !LANGUAGE_CPP
    void setLineWidth([Default=Undefined] optional float width);
    void setLineCap([Default=Undefined] optional DOMString cap);
    void setLineJoin([Default=Undefined] optional DOMString join);
    void setMiterLimit([Default=Undefined] optional float limit);
#endif

    void clearShadow();

    void fillText(DOMString text, float x, float y, optional float maxWidth);
    void strokeText(DOMString text, float x, float y, optional float maxWidth);

    void setStrokeColor([StrictTypeChecking] DOMString color, optional float alpha);
    void setStrokeColor(float grayLevel, optional float alpha);
    void setStrokeColor(float r, float g, float b, float a);
    void setStrokeColor(float c, float m, float y, float k, float a);

    void setFillColor([StrictTypeChecking] DOMString color, optional float alpha);
    void setFillColor(float grayLevel, optional float alpha);
    void setFillColor(float r, float g, float b, float a);
    void setFillColor(float c, float m, float y, float k, float a);

    void strokeRect(float x, float y, float width, float height);

    [RaisesException] void drawImage(HTMLImageElement? image, float x, float y);
    [RaisesException] void drawImage(HTMLImageElement? image, float x, float y, float width, float height);
    [RaisesException] void drawImage(HTMLImageElement? image, float sx, float sy, float sw, float sh, float dx, float dy, float dw, float dh);
    [RaisesException] void drawImage(HTMLCanvasElement? canvas, float x, float y);
    [RaisesException] void drawImage(HTMLCanvasElement? canvas, float x, float y, float width, float height);
    [RaisesException] void drawImage(HTMLCanvasElement? canvas, float sx, float sy, float sw, float sh, float dx, float dy, float dw, float dh);
#if defined(ENABLE_VIDEO) && ENABLE_VIDEO
    [RaisesException] void drawImage(HTMLVideoElement? video, float x, float y);
    [RaisesException] void drawImage(HTMLVideoElement? video, float x, float y, float width, float height);
    [RaisesException] void drawImage(HTMLVideoElement? video, float sx, float sy, float sw, float sh, float dx, float dy, float dw, float dh);
#endif

    void drawImageFromRect(HTMLImageElement image,
                           optional float sx, optional float sy, optional float sw, optional float sh,
                           optional float dx, optional float dy, optional float dw, optional float dh,
                           optional DOMString compositeOperation);

    void setShadow(float width, float height, float blur, [StrictTypeChecking] optional DOMString color, optional float alpha);
    void setShadow(float width, float height, float blur, float grayLevel, optional float alpha);
    void setShadow(float width, float height, float blur, float r, float g, float b, float a);
    void setShadow(float width, float height, float blur, float c, float m, float y, float k, float a);

    [RaisesException] void putImageData(ImageData? imagedata, float dx, float dy);
    [RaisesException] void putImageData(ImageData? imagedata, float dx, float dy, float dirtyX, float dirtyY, float dirtyWidth, float dirtyHeight);

    [RaisesException] void webkitPutImageDataHD(ImageData? imagedata, float dx, float dy);
    [RaisesException] void webkitPutImageDataHD(ImageData? imagedata, float dx, float dy, float dirtyX, float dirtyY, float dirtyWidth, float dirtyHeight);

    [RaisesException] CanvasPattern createPattern(HTMLCanvasElement? canvas, [TreatNullAs=NullString] DOMString repetitionType);
    [RaisesException] CanvasPattern createPattern(HTMLImageElement? image, [TreatNullAs=NullString] DOMString repetitionType);
    [RaisesException] ImageData createImageData(ImageData? imagedata);
    [RaisesException] ImageData createImageData(float sw, float sh);

    [Custom] attribute custom strokeStyle;
    [Custom] attribute custom fillStyle;

    // pixel manipulation
    [RaisesException] ImageData getImageData(float sx, float sy, float sw, float sh);

    [RaisesException] ImageData webkitGetImageDataHD(float sx, float sy, float sw, float sh);

    readonly attribute float webkitBackingStorePixelRatio;

    attribute boolean webkitImageSmoothingEnabled;
};