skia2/modules/canvaskit/externs.js
Bryce Thomas 2c5b856a7f Add drawOnce() API to SkSurface.
The existing |SkSurface.requestAnimationFrame| API provides a convenient way of
drawing Skia animations using the same idiom as the well known
|Window.requestAnimationFrame|.  It gracefully handles providing the caller with
access to the right canvas, as well as flushing after the user-supplied
callback.

The new |SkSurface.drawOnce| API added in this change provides the same
conveniences around access to the right canvas and flushing, but for the
use-case where the user wishes to draw a single frame only.  Importantly, this
new API disposes of the SkSurface upon completion, i.e. frees the memory
associated with the underlying pixel storage an surface.  This avoids memory
leaks that occur when |SkSurface.requestAnimationFrame| is used for single-frame
purposes.

Bug: NONE
Change-Id: Ic4e48e65dffc4809513ceaf72260ac0432b98952
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/265604
Reviewed-by: Kevin Lubick <kjlubick@google.com>
2020-01-27 13:45:47 +00:00

912 lines
23 KiB
JavaScript

/*
* This externs file prevents the Closure JS compiler from minifying away
* names of objects created by Emscripten.
* Basically, by defining empty objects and functions here, Closure will
* know not to rename them. This is needed because of our pre-js files,
* that is, the JS we hand-write to bundle into the output. That JS will be
* hit by the closure compiler and thus needs to know about what functions
* have special names and should not be minified.
*
* Emscripten does not support automatically generating an externs file, so we
* do it by hand. The general process is to write some JS code, and then put any
* calls to CanvasKit or related things in here. Running ./compile.sh and then
* looking at the minified results or running the Release trybot should
* verify nothing was missed. Optionally, looking directly at the minified
* pathkit.js can be useful when developing locally.
*
* Docs:
* https://github.com/cljsjs/packages/wiki/Creating-Externs
* https://github.com/google/closure-compiler/wiki/Types-in-the-Closure-Type-System
*
* Example externs:
* https://github.com/google/closure-compiler/tree/master/externs
*/
var CanvasKit = {
// public API (i.e. things we declare in the pre-js file)
Color: function() {},
/** @return {CanvasKit.SkRect} */
LTRBRect: function() {},
/** @return {CanvasKit.SkRect} */
XYWHRect: function() {},
/** @return {CanvasKit.SkRRect} */
RRectXY: function() {},
/** @return {ImageData} */
ImageData: function() {},
GetWebGLContext: function() {},
MakeBlurMaskFilter: function() {},
MakeCanvas: function() {},
MakeCanvasSurface: function() {},
MakeGrContext: function() {},
/** @return {CanvasKit.SkAnimatedImage} */
MakeAnimatedImageFromEncoded: function() {},
/** @return {CanvasKit.SkImage} */
MakeImage: function() {},
/** @return {CanvasKit.SkImage} */
MakeImageFromEncoded: function() {},
/** @return {LinearCanvasGradient} */
MakeLinearGradientShader: function() {},
MakeOnScreenGLSurface: function() {},
MakePathFromCmds: function() {},
MakePathFromOp: function() {},
MakePathFromSVGString: function() {},
MakeRadialGradientShader: function() {},
MakeRenderTarget: function() {},
MakeSkPicture: function() {},
MakeSWCanvasSurface: function() {},
MakeManagedAnimation: function() {},
MakeParticles: function() {},
MakeSkDashPathEffect: function() {},
MakeSkVertices: function() {},
MakeSurface: function() {},
/** @return {RadialCanvasGradient} */
MakeTwoPointConicalGradientShader: function() {},
MakeWebGLCanvasSurface: function() {},
/** @return {TypedArray} */
Malloc: function() {},
/** @return {TonalColors} */
computeTonalColors: function() {},
currentContext: function() {},
getColorComponents: function() {},
getDecodeCacheLimitBytes: function() {},
getDecodeCacheUsageBytes: function() {},
getSkDataBytes: function() {},
multiplyByAlpha: function() {},
setCurrentContext: function() {},
setDecodeCacheLimitBytes: function() {},
// private API (i.e. things declared in the bindings that we use
// in the pre-js file)
_MakeImage: function() {},
_MakeLinearGradientShader: function() {},
_MakePathFromCmds: function() {},
_MakeRadialGradientShader: function() {},
_MakeManagedAnimation: function() {},
_MakeParticles: function() {},
_MakeSkDashPathEffect: function() {},
_MakeSkPicture: function() {},
_MakeSkVertices: function() {},
_MakeTwoPointConicalGradientShader: function() {},
_decodeAnimatedImage: function() {},
_decodeImage: function() {},
_drawShapedText: function() {},
_getRasterDirectSurface: function() {},
_getRasterN32PremulSurface: function() {},
// The testing object is meant to expose internal functions
// for more fine-grained testing, e.g. parseColor
_testing: {},
// Objects and properties on CanvasKit
GrContext: {
// public API (from C++ bindings)
getResourceCacheLimitBytes: function() {},
getResourceCacheUsageBytes: function() {},
setResourceCacheLimitBytes: function() {},
},
Paragraph: {
// public API (from C++ bindings)
didExceedMaxLines: function() {},
getAlphabeticBaseline: function() {},
getGlyphPositionAtCoordinate: function() {},
getHeight: function() {},
getIdeographicBaseline: function() {},
getLongestLine: function() {},
getMaxIntrinsicWidth: function() {},
getMaxWidth: function() {},
getMinIntrinsicWidth: function() {},
getWordBoundary: function() {},
layout: function() {},
// private API
/** @return {Float32Array} */
_getRectsForRange: function() {},
},
SkRuntimeEffect: {
// public API (from C++ bindings)
Make: function() {},
// private API
_makeShader: function() {},
},
ParagraphStyle: function() {},
RSXFormBuilder: function() {},
SkColorBuilder: function() {},
SkRectBuilder: function() {},
ShapedText: {
// public API (from C++ bindings)
getBounds: function() {},
},
SkAnimatedImage: {
// public API (from C++ bindings)
decodeNextFrame: function() {},
getFrameCount: function() {},
getRepetitionCount: function() {},
height: function() {},
reset: function() {},
width: function() {},
},
SkCanvas: {
// public API (from C++ bindings)
clear: function() {},
clipPath: function() {},
clipRRect: function() {},
clipRect: function() {},
concat: function() {},
drawAnimatedImage: function() {},
drawArc: function() {},
drawCircle: function() {},
drawColor: function() {},
drawDRRect: function() {},
drawImage: function() {},
drawImageNine: function() {},
drawImageRect: function() {},
drawLine: function() {},
drawOval: function() {},
drawPaint: function() {},
drawParagraph: function() {},
drawPath: function() {},
drawPicture: function() {},
drawRRect: function() {},
drawRect: function() {},
drawRoundRect: function() {},
drawShadow: function() {},
drawText: function() {},
drawTextBlob: function() {},
drawVertices: function() {},
flush: function() {},
getSaveCount: function() {},
getTotalMatrix: function() {},
makeSurface: function() {},
restore: function() {},
restoreToCount: function() {},
rotate: function() {},
save: function() {},
saveLayer: function() {},
scale: function() {},
skew: function() {},
translate: function() {},
// private API
_drawAtlas: function() {},
_drawPoints: function() {},
_drawSimpleText: function() {},
_readPixels: function() {},
_writePixels: function() {},
delete: function() {},
},
SkColorFilter: {
// public API (from C++ bindings and JS interface)
MakeBlend: function() {},
MakeCompose: function() {},
MakeLerp: function() {},
MakeLinearToSRGBGamma: function() {},
MakeMatrix: function() {},
MakeSRGBToLinearGamma: function() {},
// private API (from C++ bindings)
_makeMatrix: function() {},
},
SkColorMatrix: {
concat: function() {},
identity: function() {},
postTranslate: function() {},
rotated: function() {},
scaled: function() {},
},
SkContourMeasureIter: {
next: function() {},
},
SkContourMeasure: {
getPosTan: function() {},
getSegment: function() {},
isClosed: function() {},
length: function() {},
},
SkFont: {
// public API (from C++ bindings)
getScaleX: function() {},
getSize: function() {},
getSkewX: function() {},
getTypeface: function() {},
measureText: function() {},
setScaleX: function() {},
setSize: function() {},
setSkewX: function() {},
setTypeface: function() {},
// private API (from C++ bindings)
_getWidths: function() {},
},
SkFontMgr: {
// public API (from C++ and JS bindings)
FromData: function() {},
RefDefault: function() {},
countFamilies: function() {},
getFamilyName: function() {},
// private API
_makeTypefaceFromData: function() {},
_fromData: function() {},
},
SkImage: {
// public API (from C++ bindings)
height: function() {},
width: function() {},
// private API
_encodeToData: function() {},
_encodeToDataWithFormat: function() {},
_makeShader: function() {},
},
SkImageFilter: {
MakeBlur: function() {},
MakeColorFilter: function() {},
MakeCompose: function() {},
MakeMatrixTransform: function() {},
},
SkMatrix: {
identity: function() {},
invert: function() {},
mapPoints: function() {},
multiply: function() {},
rotated: function() {},
scaled: function() {},
skewed: function() {},
translated: function() {},
},
SkMaskFilter: {
MakeBlur: function() {},
},
SkPaint: {
// public API (from C++ bindings)
/** @return {CanvasKit.SkPaint} */
copy: function() {},
getBlendMode: function() {},
getColor: function() {},
getFilterQuality: function() {},
getStrokeCap: function() {},
getStrokeJoin: function() {},
getStrokeMiter: function() {},
getStrokeWidth: function() {},
setAntiAlias: function() {},
setBlendMode: function() {},
setColor: function() {},
setFilterQuality: function() {},
setImageFilter: function() {},
setMaskFilter: function() {},
setPathEffect: function() {},
setShader: function() {},
setStrokeCap: function() {},
setStrokeJoin: function() {},
setStrokeMiter: function() {},
setStrokeWidth: function() {},
setStyle: function() {},
//private API
delete: function() {},
},
SkPath: {
// public API (from C++ bindings)
computeTightBounds: function() {},
contains: function() {},
/** @return {CanvasKit.SkPath} */
copy: function() {},
countPoints: function() {},
equals: function() {},
getBounds: function() {},
getFillType: function() {},
getPoint: function() {},
isEmpty: function() {},
isVolatile: function() {},
reset: function() {},
rewind: function() {},
setFillType: function() {},
setIsVolatile: function() {},
toSVGString: function() {},
// private API
_addArc: function() {},
_addOval: function() {},
_addPath: function() {},
_addRect: function() {},
_addPoly: function() {},
_addRoundRect: function() {},
_arc: function() {},
_arcTo: function() {},
_close: function() {},
_conicTo: function() {},
_cubicTo: function() {},
_dash: function() {},
_lineTo: function() {},
_moveTo: function() {},
_op: function() {},
_quadTo: function() {},
_rArcTo: function() {},
_rConicTo: function() {},
_rCubicTo: function() {},
_rLineTo: function() {},
_rMoveTo: function() {},
_rQuadTo: function() {},
_rect: function() {},
_simplify: function() {},
_stroke: function() {},
_transform: function() {},
_trim: function() {},
delete: function() {},
dump: function() {},
dumpHex: function() {},
},
SkPathMeasure: {
getLength: function() {},
getSegment: function() {},
getPosTan: function() {},
isClosed: function() {},
nextContour: function() {},
},
SkPicture: {
serialize: function() {},
},
SkPictureRecorder: {
beginRecording: function() {},
finishRecordingAsPicture: function() {},
},
SkRect: {
fLeft: {},
fTop: {},
fRight: {},
fBottom: {},
},
SkRRect: {
rect: {},
rx1: {},
ry1: {},
rx2: {},
ry2: {},
rx3: {},
ry3: {},
rx4: {},
ry4: {},
},
SkShader: {
Blend: function() {},
Color: function() {},
Empty: function() {},
Lerp: function() {},
_Blend: function() {},
_Lerp: function() {},
},
SkSurface: {
// public API (from C++ bindings)
/** @return {CanvasKit.SkCanvas} */
getCanvas: function() {},
/** @return {CanvasKit.SkImage} */
makeImageSnapshot: function() {},
makeSurface: function() {},
grContext: {},
// private API
_flush: function() {},
_getRasterN32PremulSurface: function() {},
delete: function() {},
},
SkTextBlob: {
// public API (both C++ and JS bindings)
MakeFromRSXform: function() {},
MakeFromText: function() {},
MakeOnPath: function() {},
// private API (from C++ bindings)
_MakeFromRSXform: function() {},
_MakeFromText: function() {},
},
SkVertices: {
// public API (from C++ bindings)
bounds: function() {},
mode: function() {},
uniqueID: function() {},
vertexCount: function() {},
// private API
/** @return {CanvasKit.SkVertices} */
_applyBones: function() {},
},
_SkVerticesBuilder: {
// public API (from C++ bindings)
boneIndices: function() {},
boneWeights: function() {},
colors: function() {},
detach: function() {},
indices: function() {},
positions: function() {},
texCoords: function() {},
},
TextStyle: function() {},
// Constants and Enums
gpu: {},
skottie: {},
TRANSPARENT: {},
RED: {},
BLUE: {},
YELLOW: {},
CYAN: {},
BLACK: {},
WHITE: {},
MOVE_VERB: {},
LINE_VERB: {},
QUAD_VERB: {},
CONIC_VERB: {},
CUBIC_VERB: {},
CLOSE_VERB: {},
NoDecoration: {},
UnderlineDecoration: {},
OverlineDecoration: {},
LineThroughDecoration: {},
SaveLayerInitWithPrevious: {},
SaveLayerF16ColorType: {},
Affinity: {
Upstream: {},
Downstream: {},
},
AlphaType: {
Opaque: {},
Premul: {},
Unpremul: {},
},
BlendMode: {
Clear: {},
Src: {},
Dst: {},
SrcOver: {},
DstOver: {},
SrcIn: {},
DstIn: {},
SrcOut: {},
DstOut: {},
SrcATop: {},
DstATop: {},
Xor: {},
Plus: {},
Modulate: {},
Screen: {},
Overlay: {},
Darken: {},
Lighten: {},
ColorDodge: {},
ColorBurn: {},
HardLight: {},
SoftLight: {},
Difference: {},
Exclusion: {},
Multiply: {},
Hue: {},
Saturation: {},
Color: {},
Luminosity: {},
},
BlurStyle: {
Normal: {},
Solid: {},
Outer: {},
Inner: {},
},
ClipOp: {
Difference: {},
Intersect: {},
},
ColorType: {
Alpha_8: {},
RGB_565: {},
ARGB_4444: {},
RGBA_8888: {},
RGB_888x: {},
BGRA_8888: {},
RGBA_1010102: {},
RGB_101010x: {},
Gray_8: {},
RGBA_F16: {},
RGBA_F32: {},
},
FillType: {
Winding: {},
EvenOdd: {},
InverseWinding: {},
InverseEvenOdd: {},
},
FilterQuality: {
None: {},
Low: {},
Medium: {},
High: {},
},
FontSlant: {
Upright: {},
Italic: {},
Oblique: {},
},
FontWeight: {
Invisible: {},
Thin: {},
ExtraLight: {},
Light: {},
Normal: {},
Medium: {},
SemiBold: {},
Bold: {},
ExtraBold: {},
Black: {},
ExtraBlack: {},
},
FontWidth: {
UltraCondensed: {},
ExtraCondensed: {},
Condensed: {},
SemiCondensed: {},
Normal: {},
SemiExpanded: {},
Expanded: {},
ExtraExpanded: {},
UltraExpanded: {},
},
ImageFormat: {
PNG: {},
JPEG: {},
},
PaintStyle: {
Fill: {},
Stroke: {},
StrokeAndFill: {},
},
PathOp: {
Difference: {},
Intersect: {},
Union: {},
XOR: {},
ReverseDifference: {},
},
PointMode: {
Points: {},
Lines: {},
Polygon: {},
},
RectHeightStyle: {
Tight: {},
Max: {},
IncludeLineSpacingMiddle: {},
IncludeLineSpacingTop: {},
IncludeLineSpacingBottom: {},
},
RectWidthStyle: {
Tight: {},
Max: {},
},
StrokeCap: {
Butt: {},
Round: {},
Square: {},
},
StrokeJoin: {
Miter: {},
Round: {},
Bevel: {},
},
TextAlign: {
Left: {},
Right: {},
Center: {},
Justify: {},
Start: {},
End: {},
},
TextDirection: {
LTR: {},
RTL: {},
},
TextEncoding: {
UTF8: {},
UTF16: {},
UTF32: {},
GlyphID: {},
},
TileMode: {
Clamp: {},
Repeat: {},
Mirror: {},
Decal: {},
},
VertexMode: {
Triangles: {},
TrianglesStrip: {},
TriangleFan: {},
},
// Things Enscriptem adds for us
/**
* @type {Float32Array}
*/
HEAPF32: {},
/**
* @type {Float64Array}
*/
HEAPF64: {},
/**
* @type {Uint8Array}
*/
HEAPU8: {},
/**
* @type {Uint16Array}
*/
HEAPU16: {},
/**
* @type {Uint32Array}
*/
HEAPU32: {},
/**
* @type {Int8Array}
*/
HEAP8: {},
/**
* @type {Int16Array}
*/
HEAP16: {},
/**
* @type {Int32Array}
*/
HEAP32: {},
_malloc: function() {},
_free: function() {},
onRuntimeInitialized: function() {},
};
// Public API things that are newly declared in the JS should go here.
// It's not enough to declare them above, because closure can still erase them
// unless they go on the prototype.
CanvasKit.Paragraph.prototype.getRectsForRange = function() {};
CanvasKit.SkPath.prototype.addArc = function() {};
CanvasKit.SkPath.prototype.addOval = function() {};
CanvasKit.SkPath.prototype.addPath = function() {};
CanvasKit.SkPath.prototype.addPoly = function() {};
CanvasKit.SkPath.prototype.addRect = function() {};
CanvasKit.SkPath.prototype.addRoundRect = function() {};
CanvasKit.SkPath.prototype.arc = function() {};
CanvasKit.SkPath.prototype.arcTo = function() {};
CanvasKit.SkPath.prototype.close = function() {};
CanvasKit.SkPath.prototype.conicTo = function() {};
CanvasKit.SkPath.prototype.cubicTo = function() {};
CanvasKit.SkPath.prototype.dash = function() {};
CanvasKit.SkPath.prototype.lineTo = function() {};
CanvasKit.SkPath.prototype.moveTo = function() {};
CanvasKit.SkPath.prototype.offset = function() {};
CanvasKit.SkPath.prototype.op = function() {};
CanvasKit.SkPath.prototype.quadTo = function() {};
CanvasKit.SkPath.prototype.rArcTo = function() {};
CanvasKit.SkPath.prototype.rConicTo = function() {};
CanvasKit.SkPath.prototype.rCubicTo = function() {};
CanvasKit.SkPath.prototype.rLineTo = function() {};
CanvasKit.SkPath.prototype.rMoveTo = function() {};
CanvasKit.SkPath.prototype.rQuadTo = function() {};
CanvasKit.SkPath.prototype.rect = function() {};
CanvasKit.SkPath.prototype.simplify = function() {};
CanvasKit.SkPath.prototype.stroke = function() {};
CanvasKit.SkPath.prototype.transform = function() {};
CanvasKit.SkPath.prototype.trim = function() {};
CanvasKit.SkPicture.prototype.saveAsFile = function() {};
CanvasKit.SkSurface.prototype.dispose = function() {};
CanvasKit.SkSurface.prototype.flush = function() {};
CanvasKit.SkSurface.prototype.requestAnimationFrame = function() {};
CanvasKit.SkSurface.prototype.drawOnce = function() {};
CanvasKit.SkSurface.prototype.captureFrameAsSkPicture = function() {};
/** @return {CanvasKit.SkVertices} */
CanvasKit.SkVertices.prototype.applyBones = function() {};
CanvasKit.SkImage.prototype.encodeToData = function() {};
CanvasKit.SkImage.prototype.makeShader = function() {};
CanvasKit.SkCanvas.prototype.drawAtlas = function() {};
CanvasKit.SkCanvas.prototype.drawPoints = function() {};
CanvasKit.SkCanvas.prototype.drawText = function() {};
/** @return {Uint8Array} */
CanvasKit.SkCanvas.prototype.readPixels = function() {};
CanvasKit.SkCanvas.prototype.writePixels = function() {};
CanvasKit.SkFontMgr.prototype.MakeTypefaceFromData = function() {};
CanvasKit.SkFont.prototype.getWidths = function() {};
CanvasKit.RSXFormBuilder.prototype.build = function() {};
CanvasKit.RSXFormBuilder.prototype.delete = function() {};
CanvasKit.RSXFormBuilder.prototype.push = function() {};
CanvasKit.RSXFormBuilder.prototype.set = function() {};
CanvasKit.SkColorBuilder.prototype.build = function() {};
CanvasKit.SkColorBuilder.prototype.delete = function() {};
CanvasKit.SkColorBuilder.prototype.push = function() {};
CanvasKit.SkColorBuilder.prototype.set = function() {};
CanvasKit.SkRuntimeEffect.prototype.makeShader = function() {};
// Define StrokeOpts object
var StrokeOpts = {};
StrokeOpts.prototype.width;
StrokeOpts.prototype.miter_limit;
StrokeOpts.prototype.cap;
StrokeOpts.prototype.join;
StrokeOpts.prototype.precision;
// Define everything created in the canvas2d spec here
var HTMLCanvas = {};
HTMLCanvas.prototype.decodeImage = function() {};
HTMLCanvas.prototype.dispose = function() {};
HTMLCanvas.prototype.getContext = function() {};
HTMLCanvas.prototype.loadFont = function() {};
HTMLCanvas.prototype.makePath2D = function() {};
HTMLCanvas.prototype.toDataURL = function() {};
var CanvasRenderingContext2D = {};
CanvasRenderingContext2D.prototype.addHitRegion = function() {};
CanvasRenderingContext2D.prototype.arc = function() {};
CanvasRenderingContext2D.prototype.arcTo = function() {};
CanvasRenderingContext2D.prototype.beginPath = function() {};
CanvasRenderingContext2D.prototype.bezierCurveTo = function() {};
CanvasRenderingContext2D.prototype.clearHitRegions = function() {};
CanvasRenderingContext2D.prototype.clearRect = function() {};
CanvasRenderingContext2D.prototype.clip = function() {};
CanvasRenderingContext2D.prototype.closePath = function() {};
CanvasRenderingContext2D.prototype.createImageData = function() {};
CanvasRenderingContext2D.prototype.createLinearGradient = function() {};
CanvasRenderingContext2D.prototype.createPattern = function() {};
CanvasRenderingContext2D.prototype.createRadialGradient = function() {};
CanvasRenderingContext2D.prototype.drawFocusIfNeeded = function() {};
CanvasRenderingContext2D.prototype.drawImage = function() {};
CanvasRenderingContext2D.prototype.ellipse = function() {};
CanvasRenderingContext2D.prototype.fill = function() {};
CanvasRenderingContext2D.prototype.fillRect = function() {};
CanvasRenderingContext2D.prototype.fillText = function() {};
CanvasRenderingContext2D.prototype.getImageData = function() {};
CanvasRenderingContext2D.prototype.getLineDash = function() {};
CanvasRenderingContext2D.prototype.isPointInPath = function() {};
CanvasRenderingContext2D.prototype.isPointInStroke = function() {};
CanvasRenderingContext2D.prototype.lineTo = function() {};
CanvasRenderingContext2D.prototype.measureText = function() {};
CanvasRenderingContext2D.prototype.moveTo = function() {};
CanvasRenderingContext2D.prototype.putImageData = function() {};
CanvasRenderingContext2D.prototype.quadraticCurveTo = function() {};
CanvasRenderingContext2D.prototype.rect = function() {};
CanvasRenderingContext2D.prototype.removeHitRegion = function() {};
CanvasRenderingContext2D.prototype.resetTransform = function() {};
CanvasRenderingContext2D.prototype.restore = function() {};
CanvasRenderingContext2D.prototype.rotate = function() {};
CanvasRenderingContext2D.prototype.save = function() {};
CanvasRenderingContext2D.prototype.scale = function() {};
CanvasRenderingContext2D.prototype.scrollPathIntoView = function() {};
CanvasRenderingContext2D.prototype.setLineDash = function() {};
CanvasRenderingContext2D.prototype.setTransform = function() {};
CanvasRenderingContext2D.prototype.stroke = function() {};
CanvasRenderingContext2D.prototype.strokeRect = function() {};
CanvasRenderingContext2D.prototype.strokeText = function() {};
CanvasRenderingContext2D.prototype.transform = function() {};
CanvasRenderingContext2D.prototype.translate = function() {};
var Path2D = {};
Path2D.prototype.addPath = function() {};
Path2D.prototype.arc = function() {};
Path2D.prototype.arcTo = function() {};
Path2D.prototype.bezierCurveTo = function() {};
Path2D.prototype.closePath = function() {};
Path2D.prototype.ellipse = function() {};
Path2D.prototype.lineTo = function() {};
Path2D.prototype.moveTo = function() {};
Path2D.prototype.quadraticCurveTo = function() {};
Path2D.prototype.rect = function() {};
var LinearCanvasGradient = {};
LinearCanvasGradient.prototype.addColorStop = function() {};
var RadialCanvasGradient = {};
RadialCanvasGradient.prototype.addColorStop = function() {};
var CanvasPattern = {};
CanvasPattern.prototype.setTransform = function() {};
var ImageData = {
/**
* @type {Uint8ClampedArray}
*/
data: {},
height: {},
width: {},
};
var DOMMatrix = {
a: {},
b: {},
c: {},
d: {},
e: {},
f: {},
};
// Not sure why this is needed - might be a bug in emsdk that this isn't properly declared.
function loadWebAssemblyModule() {};