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| 1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 @JsName(name: 'window') | |
| 6 library dom; | |
| 7 | |
| 8 | |
| 9 class JsName { | |
| 10 /// The JavaScript name. | |
| 11 /// Used for classes and libraries. | |
| 12 /// Note that this could be an expression, e.g. `lib.TypeName` in JS, but it | |
| 13 /// should be kept simple, as it will be generated directly into the code. | |
| 14 final String name; | |
| 15 const JsName({this.name}); | |
| 16 } | |
| 17 class Overload { | |
| 18 const Overload(); | |
| 19 } | |
| 20 const overload = const Overload(); | |
| 21 | |
| 22 external Document get document; | |
| 23 | |
| 24 @JsName(name: 'Document') | |
| 25 abstract class Document { | |
| 26 Element querySelector(String selector); | |
| 27 } | |
| 28 | |
| 29 @JsName(name: 'Element') | |
| 30 abstract class Element { | |
| 31 void addEventListener(String type, EventListener callback, [bool capture]); | |
| 32 String textContent; | |
| 33 } | |
| 34 | |
| 35 typedef void EventListener(Event e); | |
| 36 | |
| 37 abstract class Event {} | |
| 38 | |
| 39 @JsName(name: 'HTMLInputElement') | |
| 40 abstract class InputElement extends Element { | |
| 41 String value; | |
| 42 } | |
| 43 | |
| 44 @JsName(name: 'HTMLCanvasElement') | |
| 45 abstract class CanvasElement extends Element { | |
| 46 RenderingContext getContext(String contextId); | |
| 47 } | |
| 48 | |
| 49 // TODO(jmesserly): union type of CanvasRenderingContext2D and | |
| 50 // WebGLRenderingContext | |
| 51 abstract class RenderingContext {} | |
| 52 | |
| 53 // http://www.w3.org/html/wg/drafts/2dcontext/html5_canvas_CR/ | |
| 54 @JsName() | |
| 55 abstract class CanvasRenderingContext2D | |
| 56 implements CanvasDrawingStyles, CanvasPathMethods, RenderingContext { | |
| 57 | |
| 58 // back-reference to the canvas | |
| 59 CanvasElement get canvas; | |
| 60 | |
| 61 // state | |
| 62 void save(); // push state on state stack | |
| 63 void restore(); // pop state stack and restore state | |
| 64 | |
| 65 // transformations (default transform is the identity matrix) | |
| 66 void scale(num x, num y); | |
| 67 void rotate(num angle); | |
| 68 void translate(num x, num y); | |
| 69 void transform(num a, num b, num c, num d, num e, num f); | |
| 70 void setTransform(num a, num b, num c, num d, num e, num f); | |
| 71 | |
| 72 // compositing | |
| 73 num globalAlpha; // (default 1.0) | |
| 74 String globalCompositeOperation; // (default source-over) | |
| 75 | |
| 76 // colors and styles (see also the CanvasDrawingStyles interface) | |
| 77 Object strokeStyle; // (default black) | |
| 78 Object fillStyle; // (default black) | |
| 79 CanvasGradient createLinearGradient(num x0, num y0, num x1, num y1); | |
| 80 CanvasGradient createRadialGradient( | |
| 81 num x0, num y0, num r0, num x1, num y1, num r1); | |
| 82 CanvasPattern createPattern(Element image, [String repetition]); | |
| 83 | |
| 84 // shadows | |
| 85 num shadowOffsetX; // (default 0) | |
| 86 num shadowOffsetY; // (default 0) | |
| 87 num shadowBlur; // (default 0) | |
| 88 String shadowColor; // (default transparent black) | |
| 89 | |
| 90 // rects | |
| 91 void clearRect(num x, num y, num w, num h); | |
| 92 void fillRect(num x, num y, num w, num h); | |
| 93 void strokeRect(num x, num y, num w, num h); | |
| 94 | |
| 95 // path API (see also CanvasPathMethods) | |
| 96 void beginPath(); | |
| 97 void fill(); | |
| 98 void stroke(); | |
| 99 void drawFocusIfNeeded(Element element); | |
| 100 void clip(); | |
| 101 bool isPointInPath(num x, num y); | |
| 102 | |
| 103 // text (see also the CanvasDrawingStyles interface) | |
| 104 void fillText(String text, num x, num y, [num maxWidth]); | |
| 105 void strokeText(String text, num x, num y, [num maxWidth]); | |
| 106 TextMetrics measureText(String text); | |
| 107 | |
| 108 // drawing images | |
| 109 void drawImage(Element image, num dx_or_sx, num dy_or_sy, | |
| 110 [num dw_or_sw, num dh_or_sh, num dx, num dy, num dw, num dh]); | |
| 111 @overload void _drawImage_0(Element image, num dx, num dy); | |
| 112 @overload void _drawImage_1(Element image, num dx, num dy, num dw, num dh); | |
| 113 @overload void _drawImage_2(Element image, num sx, num sy, num sw, num sh, | |
| 114 num dx, num dy, num dw, num dh); | |
| 115 | |
| 116 // hit regions | |
| 117 void addHitRegion({String id: '', Element control}); | |
| 118 void removeHitRegion(String id); | |
| 119 void clearHitRegions(); | |
| 120 | |
| 121 // pixel manipulation | |
| 122 ImageData createImageData(Object sw_or_imageData, [num sh]); | |
| 123 @overload ImageData _createImageData_0(num sw, num sh); | |
| 124 @overload ImageData _createImageData_1(ImageData imagedata); | |
| 125 | |
| 126 ImageData getImageData(num sx, num sy, num sw, num sh); | |
| 127 void putImageData(ImageData imagedata, num dx, num dy, | |
| 128 [num dirtyX, num dirtyY, num dirtyWidth, num dirtyHeight]); | |
| 129 @overload void _putImageData_0(ImageData imagedata, num dx, num dy, | |
| 130 num dirtyX, num dirtyY, num dirtyWidth, num dirtyHeight); | |
| 131 @overload void _putImageData_1(ImageData imagedata, num dx, num dy); | |
| 132 } | |
| 133 | |
| 134 abstract class CanvasDrawingStyles { | |
| 135 // line caps/joins | |
| 136 num lineWidth; // (default 1) | |
| 137 String lineCap; // "butt", "round", "square" (default "butt") | |
| 138 String lineJoin; // "round", "bevel", "miter" (default "miter") | |
| 139 num miterLimit; // (default 10) | |
| 140 | |
| 141 // dashed lines | |
| 142 void setLineDash(List<num> segments); // default empty | |
| 143 List<num> getLineDash(); | |
| 144 num lineDashOffset; | |
| 145 | |
| 146 // text | |
| 147 String font; // (default 10px sans-serif) | |
| 148 | |
| 149 // "start", "end", "left", "right", "center" (default: "start") | |
| 150 String textAlign; | |
| 151 | |
| 152 // "top", "hanging", "middle", "alphabetic", | |
| 153 // "ideographic", "bottom" (default: "alphabetic") | |
| 154 String textBaseline; | |
| 155 } | |
| 156 | |
| 157 abstract class CanvasPathMethods { | |
| 158 // shared path API methods | |
| 159 void closePath(); | |
| 160 void moveTo(num x, num y); | |
| 161 void lineTo(num x, num y); | |
| 162 void quadraticCurveTo(num cpx, num cpy, num x, num y); | |
| 163 void bezierCurveTo(num cp1x, num cp1y, num cp2x, num cp2y, num x, num y); | |
| 164 void arcTo(num x1, num y1, num x2, num y2, num radius); | |
| 165 void rect(num x, num y, num w, num h); | |
| 166 void arc(num x, num y, num radius, num startAngle, num endAngle, | |
| 167 [bool anticlockwise]); | |
| 168 } | |
| 169 | |
| 170 @JsName() | |
| 171 abstract class CanvasGradient { | |
| 172 // opaque object | |
| 173 void addColorStop(num offset, String color); | |
| 174 } | |
| 175 | |
| 176 @JsName() | |
| 177 abstract class CanvasPattern { | |
| 178 // opaque object | |
| 179 } | |
| 180 | |
| 181 @JsName() | |
| 182 abstract class TextMetrics { | |
| 183 num get width; | |
| 184 } | |
| 185 | |
| 186 @JsName() | |
| 187 abstract class ImageData { | |
| 188 int get width; | |
| 189 int get height; | |
| 190 // TODO: readonly Uint8ClampedArray data; | |
| 191 } | |
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