interface CanvasRenderingContext2D {
// back-reference to the canvas readonly attribute HTMLCanvasElement canvas;
// state void save(); // push state on state stack void restore(); // pop state stack and restore state
// transformations (default transform is the identity matrix)
void scale(in float x, in float y);
void rotate(in float angle);
void translate(in float x, in float y);
void transform(in float m11, in float m12, in float m21, in float m22, in float dx, in float dy);
void setTransform(in float m11, in float m12, in float m21, in float m22, in float dx, in float dy);
// compositing attribute float globalAlpha; // (default 1.0)
attribute DOMString globalCompositeOperation; // (default source-over)
// colors and styles attribute any strokeStyle; // (default black)
attribute any fillStyle; // (default black)
CanvasGradient createLinearGradient(in float x0, in float y0, in float x1, in float y1);
CanvasGradient createRadialGradient(in float x0, in float y0, in float r0, in float x1, in float y1, in float r1);
CanvasPattern createPattern(in HTMLImageElement image, in DOMString repetition);
CanvasPattern createPattern(in HTMLCanvasElement image, in DOMString repetition);
CanvasPattern createPattern(in HTMLVideoElement image, in DOMString repetition);
// line caps/joins attribute float lineWidth; // (default 1)
attribute DOMString lineCap; // "butt", "round", "square" (default "butt")
attribute DOMString lineJoin; // "round", "bevel", "miter" (default "miter")
attribute float miterLimit; // (default 10)
// shadows attribute float shadowOffsetX; // (default 0)
attribute float shadowOffsetY; // (default 0)
attribute float shadowBlur; // (default 0)
attribute DOMString shadowColor; // (default transparent black)
// rects void clearRect(in float x, in float y, in float w, in float h);
void fillRect(in float x, in float y, in float w, in float h);
void strokeRect(in float x, in float y, in float w, in float h);
// path API void beginPath();
void closePath();
void moveTo(in float x, in float y);
void lineTo(in float x, in float y);
void quadraticCurveTo(in float cpx, in float cpy, in float x, in float y);
void bezierCurveTo(in float cp1x, in float cp1y, in float cp2x, in float cp2y, in float x, in float y);
void arcTo(in float x1, in float y1, in float x2, in float y2, in float radius);
void rect(in float x, in float y, in float w, in float h);
void arc(in float x, in float y, in float radius, in float startAngle, in float endAngle, in boolean anticlockwise);
void fill();
void stroke();
void clip();
boolean isPointInPath(in float x, in float y);
// text attribute DOMString font; // (default 10px sans-serif)
attribute DOMString textAlign; // "start", "end", "left", "right", "center" (default: "start")
attribute DOMString textBaseline; // "top", "hanging", "middle", "alphabetic", "ideographic", "bottom" (default: "alphabetic")
void fillText(in DOMString text, in float x, in float y, optional in float maxWidth);
void strokeText(in DOMString text, in float x, in float y, optional in float maxWidth);
TextMetrics measureText(in DOMString text);
// drawing images void drawImage(in HTMLImageElement image, in float dx, in float dy, optional in float dw, in float dh);
void drawImage(in HTMLImageElement image, in float sx, in float sy, in float sw, in float sh, in float dx, in float dy, in float dw, in float dh);
void drawImage(in HTMLCanvasElement image, in float dx, in float dy, optional in float dw, in float dh);
void drawImage(in HTMLCanvasElement image, in float sx, in float sy, in float sw, in float sh, in float dx, in float dy, in float dw, in float dh);
void drawImage(in HTMLVideoElement image, in float dx, in float dy, optional in float dw, in float dh);
void drawImage(in HTMLVideoElement image, in float sx, in float sy, in float sw, in float sh, in float dx, in float dy, in float dw, in float dh);
// pixel manipulation
ImageData createImageData(in float sw, in float sh);
ImageData createImageData(in ImageData imagedata);
ImageData getImageData(in float sx, in float sy, in float sw, in float sh);
void putImageData(in ImageData imagedata, in float dx, in float dy, optional in float dirtyX, in float dirtyY, in float dirtyWidth, in float dirtyHeight);
};
interface CanvasGradient {
// opaque object void addColorStop(in float offset, in DOMString color);
};
interface CanvasPattern {
// opaque object
};
interface TextMetrics {
readonly attribute float width;
};
interface ImageData {
readonly attribute unsigned long width;
readonly attribute unsigned long height;
readonly attribute CanvasPixelArray data;
};
interface CanvasPixelArray {
readonly attribute unsigned long length;
getter octet (in unsigned long index);
setter void (in unsigned long index, in octet value);
};