Mercurial > hg > orthanc-stone
annotate Platforms/Wasm/wasm-viewport.ts @ 496:8b6ceae45ba0 bgo-commands-codegen
Finished (untested) C++, html, typescript, tsc & browserify production.
| author | bgo-osimis |
|---|---|
| date | Sat, 23 Feb 2019 15:04:29 +0100 |
| parents | 5055031f4a06 |
| children | 7cdb4634846c |
| rev | line source |
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1 import wasmApplicationRunner = require('./wasm-application-runner'); |
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2 //import stoneFrameworkLoader = require('./stone-framework-loader'); |
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3 |
| 230 | 4 var isPendingRedraw = false; |
| 229 | 5 |
| 230 | 6 function ScheduleWebViewportRedraw(cppViewportHandle: any) : void |
| 7 { | |
| 8 if (!isPendingRedraw) { | |
| 9 isPendingRedraw = true; | |
| 10 console.log('Scheduling a refresh of the viewport, as its content changed'); | |
| 11 window.requestAnimationFrame(function() { | |
| 12 isPendingRedraw = false; | |
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13 WasmViewport.GetFromCppViewport(cppViewportHandle).Redraw(); |
| 230 | 14 }); |
| 229 | 15 } |
| 230 | 16 } |
| 226 | 17 |
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18 (<any>window).ScheduleWebViewportRedraw = ScheduleWebViewportRedraw; |
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19 |
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20 declare function UTF8ToString(any): string; |
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21 |
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22 function CreateWasmViewport(htmlCanvasId: string) : any { |
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23 var cppViewportHandle = wasmApplicationRunner.CreateCppViewport(); |
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24 var canvasId = UTF8ToString(htmlCanvasId); |
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25 var webViewport = new WasmViewport((<any> window).StoneFrameworkModule, canvasId, cppViewportHandle); // viewports are stored in a static map in WasmViewport -> won't be deleted |
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26 webViewport.Initialize(); |
| 314 | 27 |
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28 return cppViewportHandle; |
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29 } |
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30 |
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31 (<any>window).CreateWasmViewport = CreateWasmViewport; |
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32 |
| 226 | 33 // export declare type InitializationCallback = () => void; |
| 34 | |
| 35 // export declare var StoneFrameworkModule : any; | |
| 36 | |
| 37 //const ASSETS_FOLDER : string = "assets/lib"; | |
| 38 //const WASM_FILENAME : string = "orthanc-framework"; | |
| 229 | 39 |
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40 export class WasmViewport { |
| 226 | 41 |
| 313 | 42 private static viewportsMapByCppHandle_ : Map<number, WasmViewport> = new Map<number, WasmViewport>(); // key = the C++ handle |
| 43 private static viewportsMapByCanvasId_ : Map<string, WasmViewport> = new Map<string, WasmViewport>(); // key = the canvasId | |
| 229 | 44 |
| 226 | 45 private module_ : any; |
| 46 private canvasId_ : string; | |
| 47 private htmlCanvas_ : HTMLCanvasElement; | |
| 48 private context_ : CanvasRenderingContext2D; | |
| 49 private imageData_ : any = null; | |
| 50 private renderingBuffer_ : any = null; | |
| 51 private touchZoom_ : any = false; | |
| 52 private touchTranslation_ : any = false; | |
| 53 | |
| 54 private ViewportSetSize : Function; | |
| 55 private ViewportRender : Function; | |
| 56 private ViewportMouseDown : Function; | |
| 57 private ViewportMouseMove : Function; | |
| 58 private ViewportMouseUp : Function; | |
| 59 private ViewportMouseEnter : Function; | |
| 60 private ViewportMouseLeave : Function; | |
| 61 private ViewportMouseWheel : Function; | |
| 62 private ViewportKeyPressed : Function; | |
| 63 | |
| 227 | 64 private pimpl_ : any; // Private pointer to the underlying WebAssembly C++ object |
| 65 | |
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66 public constructor(module: any, canvasId: string, cppViewport: any) { |
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67 |
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68 this.pimpl_ = cppViewport; |
| 313 | 69 WasmViewport.viewportsMapByCppHandle_[this.pimpl_] = this; |
| 70 WasmViewport.viewportsMapByCanvasId_[canvasId] = this; | |
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71 |
| 226 | 72 this.module_ = module; |
| 73 this.canvasId_ = canvasId; | |
| 74 this.htmlCanvas_ = document.getElementById(this.canvasId_) as HTMLCanvasElement; | |
| 244 | 75 if (this.htmlCanvas_ == null) { |
| 76 console.log("Can not create WasmViewport, did not find the canvas whose id is '", this.canvasId_, "'"); | |
| 77 } | |
| 226 | 78 this.context_ = this.htmlCanvas_.getContext('2d'); |
| 79 | |
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80 this.ViewportSetSize = this.module_.cwrap('ViewportSetSize', null, [ 'number', 'number', 'number' ]); |
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81 this.ViewportRender = this.module_.cwrap('ViewportRender', null, [ 'number', 'number', 'number', 'number' ]); |
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82 this.ViewportMouseDown = this.module_.cwrap('ViewportMouseDown', null, [ 'number', 'number', 'number', 'number', 'number' ]); |
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83 this.ViewportMouseMove = this.module_.cwrap('ViewportMouseMove', null, [ 'number', 'number', 'number' ]); |
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84 this.ViewportMouseUp = this.module_.cwrap('ViewportMouseUp', null, [ 'number' ]); |
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85 this.ViewportMouseEnter = this.module_.cwrap('ViewportMouseEnter', null, [ 'number' ]); |
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86 this.ViewportMouseLeave = this.module_.cwrap('ViewportMouseLeave', null, [ 'number' ]); |
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87 this.ViewportMouseWheel = this.module_.cwrap('ViewportMouseWheel', null, [ 'number', 'number', 'number', 'number', 'number' ]); |
| 327 | 88 this.ViewportKeyPressed = this.module_.cwrap('ViewportKeyPressed', null, [ 'number', 'number', 'string', 'number', 'number' ]); |
| 228 | 89 } |
| 90 | |
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91 public GetCppViewport() : number { |
| 228 | 92 return this.pimpl_; |
| 226 | 93 } |
| 94 | |
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95 public static GetFromCppViewport(cppViewportHandle: number) : WasmViewport { |
| 313 | 96 if (WasmViewport.viewportsMapByCppHandle_[cppViewportHandle] !== undefined) { |
| 97 return WasmViewport.viewportsMapByCppHandle_[cppViewportHandle]; | |
| 98 } | |
| 99 console.log("WasmViewport not found !"); | |
| 100 return undefined; | |
| 101 } | |
| 102 | |
| 103 public static GetFromCanvasId(canvasId: string) : WasmViewport { | |
| 104 if (WasmViewport.viewportsMapByCanvasId_[canvasId] !== undefined) { | |
| 105 return WasmViewport.viewportsMapByCanvasId_[canvasId]; | |
| 229 | 106 } |
| 107 console.log("WasmViewport not found !"); | |
| 108 return undefined; | |
| 109 } | |
| 110 | |
| 314 | 111 public static ResizeAll() { |
| 112 for (let canvasId in WasmViewport.viewportsMapByCanvasId_) { | |
| 113 WasmViewport.viewportsMapByCanvasId_[canvasId].Resize(); | |
| 114 } | |
| 115 } | |
| 116 | |
| 226 | 117 public Redraw() { |
| 118 if (this.imageData_ === null || | |
| 119 this.renderingBuffer_ === null || | |
| 227 | 120 this.ViewportRender(this.pimpl_, |
| 121 this.imageData_.width, | |
| 226 | 122 this.imageData_.height, |
| 123 this.renderingBuffer_) == 0) { | |
| 124 console.log('The rendering has failed'); | |
| 125 } else { | |
| 126 // Create an accessor to the rendering buffer (i.e. create a | |
| 127 // "window" above the heap of the WASM module), then copy it to | |
| 128 // the ImageData object | |
| 129 this.imageData_.data.set(new Uint8ClampedArray( | |
| 130 this.module_.buffer, | |
| 131 this.renderingBuffer_, | |
| 132 this.imageData_.width * this.imageData_.height * 4)); | |
| 133 | |
| 134 this.context_.putImageData(this.imageData_, 0, 0); | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 public Resize() { | |
| 139 if (this.imageData_ != null && | |
| 140 (this.imageData_.width != window.innerWidth || | |
| 141 this.imageData_.height != window.innerHeight)) { | |
| 142 this.imageData_ = null; | |
| 143 } | |
| 144 | |
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145 // width/height is defined by the parent width/height |
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146 this.htmlCanvas_.width = this.htmlCanvas_.parentElement.offsetWidth; |
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147 this.htmlCanvas_.height = this.htmlCanvas_.parentElement.offsetHeight; |
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148 |
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149 console.log("resizing WasmViewport: ", this.htmlCanvas_.width, "x", this.htmlCanvas_.height); |
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150 |
| 226 | 151 if (this.imageData_ === null) { |
| 152 this.imageData_ = this.context_.getImageData(0, 0, this.htmlCanvas_.width, this.htmlCanvas_.height); | |
| 228 | 153 this.ViewportSetSize(this.pimpl_, this.htmlCanvas_.width, this.htmlCanvas_.height); |
| 226 | 154 |
| 155 if (this.renderingBuffer_ != null) { | |
| 156 this.module_._free(this.renderingBuffer_); | |
| 157 } | |
| 158 | |
| 159 this.renderingBuffer_ = this.module_._malloc(this.imageData_.width * this.imageData_.height * 4); | |
| 313 | 160 } else { |
| 161 this.ViewportSetSize(this.pimpl_, this.htmlCanvas_.width, this.htmlCanvas_.height); | |
| 226 | 162 } |
| 163 | |
| 164 this.Redraw(); | |
| 165 } | |
| 166 | |
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167 public Initialize() { |
| 227 | 168 |
| 169 // Force the rendering of the viewport for the first time | |
| 170 this.Resize(); | |
| 226 | 171 |
| 228 | 172 var that : WasmViewport = this; |
| 227 | 173 // Register an event listener to call the Resize() function |
| 174 // each time the window is resized. | |
| 228 | 175 window.addEventListener('resize', function(event) { |
| 176 that.Resize(); | |
| 177 }, false); | |
| 226 | 178 |
| 227 | 179 this.htmlCanvas_.addEventListener('contextmenu', function(event) { |
| 180 // Prevent right click on the canvas | |
| 181 event.preventDefault(); | |
| 182 }, false); | |
| 183 | |
| 184 this.htmlCanvas_.addEventListener('mouseleave', function(event) { | |
| 228 | 185 that.ViewportMouseLeave(that.pimpl_); |
| 227 | 186 }); |
| 187 | |
| 188 this.htmlCanvas_.addEventListener('mouseenter', function(event) { | |
| 228 | 189 that.ViewportMouseEnter(that.pimpl_); |
| 227 | 190 }); |
| 191 | |
| 192 this.htmlCanvas_.addEventListener('mousedown', function(event) { | |
| 193 var x = event.pageX - this.offsetLeft; | |
| 194 var y = event.pageY - this.offsetTop; | |
| 228 | 195 that.ViewportMouseDown(that.pimpl_, event.button, x, y, 0 /* TODO */); |
| 227 | 196 }); |
| 197 | |
| 198 this.htmlCanvas_.addEventListener('mousemove', function(event) { | |
| 199 var x = event.pageX - this.offsetLeft; | |
| 200 var y = event.pageY - this.offsetTop; | |
| 228 | 201 that.ViewportMouseMove(that.pimpl_, x, y); |
| 227 | 202 }); |
| 203 | |
| 204 this.htmlCanvas_.addEventListener('mouseup', function(event) { | |
| 228 | 205 that.ViewportMouseUp(that.pimpl_); |
| 227 | 206 }); |
| 207 | |
| 208 window.addEventListener('keydown', function(event) { | |
| 327 | 209 var keyChar = event.key; |
| 210 var keyCode = event.keyCode | |
| 211 if (keyChar.length == 1) { | |
| 212 keyCode = 0; // maps to OrthancStone::KeyboardKeys_Generic | |
| 213 } else { | |
| 214 keyChar = null; | |
| 215 } | |
| 216 // console.log("key: ", keyCode, keyChar); | |
| 217 that.ViewportKeyPressed(that.pimpl_, keyCode, keyChar, event.shiftKey, event.ctrlKey, event.altKey); | |
| 227 | 218 }); |
| 226 | 219 |
| 227 | 220 this.htmlCanvas_.addEventListener('wheel', function(event) { |
| 221 var x = event.pageX - this.offsetLeft; | |
| 222 var y = event.pageY - this.offsetTop; | |
| 228 | 223 that.ViewportMouseWheel(that.pimpl_, event.deltaY, x, y, event.ctrlKey); |
| 227 | 224 event.preventDefault(); |
| 225 }); | |
| 226 | |
| 227 this.htmlCanvas_.addEventListener('touchstart', function(event) { | |
| 228 that.ResetTouch(); | |
| 229 }); | |
| 230 | |
| 231 this.htmlCanvas_.addEventListener('touchend', function(event) { | |
| 232 that.ResetTouch(); | |
| 233 }); | |
| 234 | |
| 235 this.htmlCanvas_.addEventListener('touchmove', function(event) { | |
| 236 if (that.touchTranslation_.length == 2) { | |
| 237 var t = that.GetTouchTranslation(event); | |
| 228 | 238 that.ViewportMouseMove(that.pimpl_, t[0], t[1]); |
| 227 | 239 } |
| 240 else if (that.touchZoom_.length == 3) { | |
| 226 | 241 var z0 = that.touchZoom_; |
| 227 | 242 var z1 = that.GetTouchZoom(event); |
| 228 | 243 that.ViewportMouseMove(that.pimpl_, z0[0], z0[1] - z0[2] + z1[2]); |
| 227 | 244 } |
| 245 else { | |
| 246 // Realize the gesture event | |
| 247 if (event.targetTouches.length == 1) { | |
| 248 // Exactly one finger inside the canvas => Setup a translation | |
| 249 that.touchTranslation_ = that.GetTouchTranslation(event); | |
| 228 | 250 that.ViewportMouseDown(that.pimpl_, |
| 251 1 /* middle button */, | |
| 227 | 252 that.touchTranslation_[0], |
| 253 that.touchTranslation_[1], 0); | |
| 254 } else if (event.targetTouches.length == 2) { | |
| 255 // Exactly 2 fingers inside the canvas => Setup a pinch/zoom | |
| 256 that.touchZoom_ = that.GetTouchZoom(event); | |
| 257 var z0 = that.touchZoom_; | |
| 228 | 258 that.ViewportMouseDown(that.pimpl_, |
| 259 2 /* right button */, | |
| 227 | 260 z0[0], |
| 261 z0[1], 0); | |
| 262 } | |
| 263 } | |
| 264 }); | |
| 265 } | |
| 226 | 266 |
| 267 public ResetTouch() { | |
| 227 | 268 if (this.touchTranslation_ || |
| 269 this.touchZoom_) { | |
| 228 | 270 this.ViewportMouseUp(this.pimpl_); |
| 226 | 271 } |
| 227 | 272 |
| 273 this.touchTranslation_ = false; | |
| 274 this.touchZoom_ = false; | |
| 275 } | |
| 226 | 276 |
| 277 public GetTouchTranslation(event) { | |
| 227 | 278 var touch = event.targetTouches[0]; |
| 279 return [ | |
| 280 touch.pageX, | |
| 281 touch.pageY | |
| 282 ]; | |
| 283 } | |
| 226 | 284 |
| 285 public GetTouchZoom(event) { | |
| 227 | 286 var touch1 = event.targetTouches[0]; |
| 287 var touch2 = event.targetTouches[1]; | |
| 288 var dx = (touch1.pageX - touch2.pageX); | |
| 289 var dy = (touch1.pageY - touch2.pageY); | |
| 290 var d = Math.sqrt(dx * dx + dy * dy); | |
| 291 return [ | |
| 292 (touch1.pageX + touch2.pageX) / 2.0, | |
| 293 (touch1.pageY + touch2.pageY) / 2.0, | |
| 294 d | |
| 295 ]; | |
| 296 } | |
| 226 | 297 |
| 227 | 298 } |
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299 |
| 226 | 300 |