Mercurial > hg > orthanc-stone
annotate Platforms/Wasm/wasm-viewport.ts @ 894:f557b18d287f
wasm: error log if canvas GL context can't be created
| author | Benjamin Golinvaux <bgo@osimis.io> |
|---|---|
| date | Tue, 16 Jul 2019 10:51:03 +0200 |
| parents | d5579bdc59b5 |
| children | 67d0a8da4afe |
| rev | line source |
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1 import wasmApplicationRunner = require('./wasm-application-runner'); |
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2 import * as Logger from './logger' |
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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; | |
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10 Logger.defaultLogger.debug('Scheduling a refresh of the viewport, as its content changed'); |
| 230 | 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 |
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33 export class WasmViewport { |
| 226 | 34 |
| 313 | 35 private static viewportsMapByCppHandle_ : Map<number, WasmViewport> = new Map<number, WasmViewport>(); // key = the C++ handle |
| 36 private static viewportsMapByCanvasId_ : Map<string, WasmViewport> = new Map<string, WasmViewport>(); // key = the canvasId | |
| 229 | 37 |
| 226 | 38 private module_ : any; |
| 39 private canvasId_ : string; | |
| 40 private htmlCanvas_ : HTMLCanvasElement; | |
| 41 private context_ : CanvasRenderingContext2D; | |
| 42 private imageData_ : any = null; | |
| 43 private renderingBuffer_ : any = null; | |
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44 |
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45 private touchGestureInProgress_: boolean = false; |
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46 private touchCount_: number = 0; |
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47 private touchGestureLastCoordinates_: [number, number][] = []; // last x,y coordinates of each touch |
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48 |
| 226 | 49 private touchZoom_ : any = false; |
| 50 private touchTranslation_ : any = false; | |
| 51 | |
| 52 private ViewportSetSize : Function; | |
| 53 private ViewportRender : Function; | |
| 54 private ViewportMouseDown : Function; | |
| 55 private ViewportMouseMove : Function; | |
| 56 private ViewportMouseUp : Function; | |
| 57 private ViewportMouseEnter : Function; | |
| 58 private ViewportMouseLeave : Function; | |
| 59 private ViewportMouseWheel : Function; | |
| 60 private ViewportKeyPressed : Function; | |
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61 private ViewportTouchStart : Function; |
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62 private ViewportTouchMove : Function; |
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63 private ViewportTouchEnd : Function; |
| 226 | 64 |
| 227 | 65 private pimpl_ : any; // Private pointer to the underlying WebAssembly C++ object |
| 66 | |
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67 public constructor(module: any, canvasId: string, cppViewport: any) { |
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68 |
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69 this.pimpl_ = cppViewport; |
| 313 | 70 WasmViewport.viewportsMapByCppHandle_[this.pimpl_] = this; |
| 71 WasmViewport.viewportsMapByCanvasId_[canvasId] = this; | |
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72 |
| 226 | 73 this.module_ = module; |
| 74 this.canvasId_ = canvasId; | |
| 75 this.htmlCanvas_ = document.getElementById(this.canvasId_) as HTMLCanvasElement; | |
| 244 | 76 if (this.htmlCanvas_ == null) { |
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77 Logger.defaultLogger.error("Can not create WasmViewport, did not find the canvas whose id is '", this.canvasId_, "'"); |
| 244 | 78 } |
| 226 | 79 this.context_ = this.htmlCanvas_.getContext('2d'); |
| 80 | |
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81 this.ViewportSetSize = this.module_.cwrap('ViewportSetSize', null, [ 'number', 'number', 'number' ]); |
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82 this.ViewportRender = this.module_.cwrap('ViewportRender', null, [ 'number', 'number', 'number', 'number' ]); |
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83 this.ViewportMouseDown = this.module_.cwrap('ViewportMouseDown', null, [ 'number', 'number', 'number', 'number', 'number' ]); |
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84 this.ViewportMouseMove = this.module_.cwrap('ViewportMouseMove', null, [ 'number', 'number', 'number' ]); |
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85 this.ViewportMouseUp = this.module_.cwrap('ViewportMouseUp', null, [ 'number' ]); |
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86 this.ViewportMouseEnter = this.module_.cwrap('ViewportMouseEnter', null, [ 'number' ]); |
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87 this.ViewportMouseLeave = this.module_.cwrap('ViewportMouseLeave', null, [ 'number' ]); |
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88 this.ViewportMouseWheel = this.module_.cwrap('ViewportMouseWheel', null, [ 'number', 'number', 'number', 'number', 'number' ]); |
| 327 | 89 this.ViewportKeyPressed = this.module_.cwrap('ViewportKeyPressed', null, [ 'number', 'number', 'string', 'number', 'number' ]); |
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90 this.ViewportTouchStart = this.module_.cwrap('ViewportTouchStart', null, [ 'number', 'number', 'number', 'number', 'number', 'number', 'number' ]); |
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91 this.ViewportTouchMove = this.module_.cwrap('ViewportTouchMove', null, [ 'number', 'number', 'number', 'number', 'number', 'number', 'number' ]); |
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parents:
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92 this.ViewportTouchEnd = this.module_.cwrap('ViewportTouchEnd', null, [ 'number', 'number', 'number', 'number', 'number', 'number', 'number' ]); |
| 228 | 93 } |
| 94 | |
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95 public GetCppViewport() : number { |
| 228 | 96 return this.pimpl_; |
| 226 | 97 } |
| 98 | |
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99 public static GetFromCppViewport(cppViewportHandle: number) : WasmViewport { |
| 313 | 100 if (WasmViewport.viewportsMapByCppHandle_[cppViewportHandle] !== undefined) { |
| 101 return WasmViewport.viewportsMapByCppHandle_[cppViewportHandle]; | |
| 102 } | |
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103 Logger.defaultLogger.error("WasmViewport not found !"); |
| 313 | 104 return undefined; |
| 105 } | |
| 106 | |
| 107 public static GetFromCanvasId(canvasId: string) : WasmViewport { | |
| 108 if (WasmViewport.viewportsMapByCanvasId_[canvasId] !== undefined) { | |
| 109 return WasmViewport.viewportsMapByCanvasId_[canvasId]; | |
| 229 | 110 } |
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111 Logger.defaultLogger.error("WasmViewport not found !"); |
| 229 | 112 return undefined; |
| 113 } | |
| 114 | |
| 314 | 115 public static ResizeAll() { |
| 116 for (let canvasId in WasmViewport.viewportsMapByCanvasId_) { | |
| 117 WasmViewport.viewportsMapByCanvasId_[canvasId].Resize(); | |
| 118 } | |
| 119 } | |
| 120 | |
| 226 | 121 public Redraw() { |
| 122 if (this.imageData_ === null || | |
| 123 this.renderingBuffer_ === null || | |
| 227 | 124 this.ViewportRender(this.pimpl_, |
| 125 this.imageData_.width, | |
| 226 | 126 this.imageData_.height, |
| 127 this.renderingBuffer_) == 0) { | |
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128 Logger.defaultLogger.error('The rendering has failed'); |
| 226 | 129 } else { |
| 130 // Create an accessor to the rendering buffer (i.e. create a | |
| 131 // "window" above the heap of the WASM module), then copy it to | |
| 132 // the ImageData object | |
| 133 this.imageData_.data.set(new Uint8ClampedArray( | |
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134 this.module_.HEAPU8.buffer, |
| 226 | 135 this.renderingBuffer_, |
| 136 this.imageData_.width * this.imageData_.height * 4)); | |
| 137 | |
| 138 this.context_.putImageData(this.imageData_, 0, 0); | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 public Resize() { | |
| 143 if (this.imageData_ != null && | |
| 144 (this.imageData_.width != window.innerWidth || | |
| 145 this.imageData_.height != window.innerHeight)) { | |
| 146 this.imageData_ = null; | |
| 147 } | |
| 148 | |
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149 // width/height is defined by the parent width/height |
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150 this.htmlCanvas_.width = this.htmlCanvas_.parentElement.offsetWidth; |
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151 this.htmlCanvas_.height = this.htmlCanvas_.parentElement.offsetHeight; |
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152 |
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153 Logger.defaultLogger.debug("resizing WasmViewport: ", this.htmlCanvas_.width, "x", this.htmlCanvas_.height); |
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154 |
| 226 | 155 if (this.imageData_ === null) { |
| 156 this.imageData_ = this.context_.getImageData(0, 0, this.htmlCanvas_.width, this.htmlCanvas_.height); | |
| 228 | 157 this.ViewportSetSize(this.pimpl_, this.htmlCanvas_.width, this.htmlCanvas_.height); |
| 226 | 158 |
| 159 if (this.renderingBuffer_ != null) { | |
| 160 this.module_._free(this.renderingBuffer_); | |
| 161 } | |
| 162 | |
| 163 this.renderingBuffer_ = this.module_._malloc(this.imageData_.width * this.imageData_.height * 4); | |
| 313 | 164 } else { |
| 165 this.ViewportSetSize(this.pimpl_, this.htmlCanvas_.width, this.htmlCanvas_.height); | |
| 226 | 166 } |
| 167 | |
| 168 this.Redraw(); | |
| 169 } | |
| 170 | |
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171 public Initialize() { |
| 227 | 172 |
| 173 // Force the rendering of the viewport for the first time | |
| 174 this.Resize(); | |
| 226 | 175 |
| 228 | 176 var that : WasmViewport = this; |
| 227 | 177 // Register an event listener to call the Resize() function |
| 178 // each time the window is resized. | |
| 228 | 179 window.addEventListener('resize', function(event) { |
| 180 that.Resize(); | |
| 181 }, false); | |
| 226 | 182 |
| 227 | 183 this.htmlCanvas_.addEventListener('contextmenu', function(event) { |
| 184 // Prevent right click on the canvas | |
| 185 event.preventDefault(); | |
| 186 }, false); | |
| 187 | |
| 188 this.htmlCanvas_.addEventListener('mouseleave', function(event) { | |
| 228 | 189 that.ViewportMouseLeave(that.pimpl_); |
| 227 | 190 }); |
| 191 | |
| 192 this.htmlCanvas_.addEventListener('mouseenter', function(event) { | |
| 228 | 193 that.ViewportMouseEnter(that.pimpl_); |
| 227 | 194 }); |
| 195 | |
| 196 this.htmlCanvas_.addEventListener('mousedown', function(event) { | |
| 197 var x = event.pageX - this.offsetLeft; | |
| 198 var y = event.pageY - this.offsetTop; | |
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199 |
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200 that.ViewportMouseDown(that.pimpl_, event.button, x, y, 0 /* TODO detect modifier keys*/); |
| 227 | 201 }); |
| 202 | |
| 203 this.htmlCanvas_.addEventListener('mousemove', function(event) { | |
| 204 var x = event.pageX - this.offsetLeft; | |
| 205 var y = event.pageY - this.offsetTop; | |
| 228 | 206 that.ViewportMouseMove(that.pimpl_, x, y); |
| 227 | 207 }); |
| 208 | |
| 209 this.htmlCanvas_.addEventListener('mouseup', function(event) { | |
| 228 | 210 that.ViewportMouseUp(that.pimpl_); |
| 227 | 211 }); |
| 212 | |
| 213 window.addEventListener('keydown', function(event) { | |
| 327 | 214 var keyChar = event.key; |
| 215 var keyCode = event.keyCode | |
| 216 if (keyChar.length == 1) { | |
| 217 keyCode = 0; // maps to OrthancStone::KeyboardKeys_Generic | |
| 218 } else { | |
| 219 keyChar = null; | |
| 220 } | |
| 221 // console.log("key: ", keyCode, keyChar); | |
| 222 that.ViewportKeyPressed(that.pimpl_, keyCode, keyChar, event.shiftKey, event.ctrlKey, event.altKey); | |
| 227 | 223 }); |
| 226 | 224 |
| 227 | 225 this.htmlCanvas_.addEventListener('wheel', function(event) { |
| 226 var x = event.pageX - this.offsetLeft; | |
| 227 var y = event.pageY - this.offsetTop; | |
| 228 | 228 that.ViewportMouseWheel(that.pimpl_, event.deltaY, x, y, event.ctrlKey); |
| 227 | 229 event.preventDefault(); |
| 545 | 230 }, {passive: false}); // must not be passive if calling event.preventDefault, ie to cancel scroll or zoom of the whole interface |
| 227 | 231 |
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232 this.htmlCanvas_.addEventListener('touchstart', function(event: TouchEvent) { |
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233 // don't propagate events to the whole body (this could zoom the entire page instead of zooming the viewport) |
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234 event.preventDefault(); |
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235 event.stopPropagation(); |
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236 |
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237 // TODO: find a way to pass the coordinates as an array between JS and C++ |
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238 var x0 = 0; |
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239 var y0 = 0; |
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240 var x1 = 0; |
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241 var y1 = 0; |
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242 var x2 = 0; |
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243 var y2 = 0; |
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244 if (event.targetTouches.length > 0) { |
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245 x0 = event.targetTouches[0].pageX; |
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246 y0 = event.targetTouches[0].pageY; |
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247 } |
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248 if (event.targetTouches.length > 1) { |
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249 x1 = event.targetTouches[1].pageX; |
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250 y1 = event.targetTouches[1].pageY; |
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251 } |
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252 if (event.targetTouches.length > 2) { |
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253 x2 = event.targetTouches[2].pageX; |
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254 y2 = event.targetTouches[2].pageY; |
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255 } |
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256 |
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257 that.ViewportTouchStart(that.pimpl_, event.targetTouches.length, x0, y0, x1, y1, x2, y2); |
| 545 | 258 }, {passive: false}); // must not be passive if calling event.preventDefault, ie to cancel scroll or zoom of the whole interface |
| 227 | 259 |
| 260 this.htmlCanvas_.addEventListener('touchend', function(event) { | |
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261 // don't propagate events to the whole body (this could zoom the entire page instead of zooming the viewport) |
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262 event.preventDefault(); |
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263 event.stopPropagation(); |
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264 |
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265 // TODO: find a way to pass the coordinates as an array between JS and C++ |
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266 var x0 = 0; |
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267 var y0 = 0; |
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268 var x1 = 0; |
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269 var y1 = 0; |
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270 var x2 = 0; |
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271 var y2 = 0; |
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272 if (event.targetTouches.length > 0) { |
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273 x0 = event.targetTouches[0].pageX; |
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274 y0 = event.targetTouches[0].pageY; |
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275 } |
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276 if (event.targetTouches.length > 1) { |
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277 x1 = event.targetTouches[1].pageX; |
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278 y1 = event.targetTouches[1].pageY; |
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279 } |
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280 if (event.targetTouches.length > 2) { |
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281 x2 = event.targetTouches[2].pageX; |
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282 y2 = event.targetTouches[2].pageY; |
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283 } |
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284 |
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285 that.ViewportTouchEnd(that.pimpl_, event.targetTouches.length, x0, y0, x1, y1, x2, y2); |
| 227 | 286 }); |
| 287 | |
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288 this.htmlCanvas_.addEventListener('touchmove', function(event: TouchEvent) { |
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289 |
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290 // don't propagate events to the whole body (this could zoom the entire page instead of zooming the viewport) |
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291 event.preventDefault(); |
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292 event.stopPropagation(); |
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293 |
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294 |
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295 // TODO: find a way to pass the coordinates as an array between JS and C++ |
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296 var x0 = 0; |
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297 var y0 = 0; |
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298 var x1 = 0; |
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299 var y1 = 0; |
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300 var x2 = 0; |
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301 var y2 = 0; |
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302 if (event.targetTouches.length > 0) { |
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303 x0 = event.targetTouches[0].pageX; |
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304 y0 = event.targetTouches[0].pageY; |
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305 } |
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306 if (event.targetTouches.length > 1) { |
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307 x1 = event.targetTouches[1].pageX; |
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308 y1 = event.targetTouches[1].pageY; |
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309 } |
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310 if (event.targetTouches.length > 2) { |
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311 x2 = event.targetTouches[2].pageX; |
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312 y2 = event.targetTouches[2].pageY; |
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313 } |
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314 |
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315 that.ViewportTouchMove(that.pimpl_, event.targetTouches.length, x0, y0, x1, y1, x2, y2); |
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316 return; |
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317 |
| 545 | 318 }, {passive: false}); // must not be passive if calling event.preventDefault, ie to cancel scroll or zoom of the whole interface |
| 227 | 319 } |
| 226 | 320 |
| 321 public ResetTouch() { | |
| 227 | 322 if (this.touchTranslation_ || |
| 323 this.touchZoom_) { | |
| 228 | 324 this.ViewportMouseUp(this.pimpl_); |
| 226 | 325 } |
| 227 | 326 |
| 327 this.touchTranslation_ = false; | |
| 328 this.touchZoom_ = false; | |
| 329 } | |
| 226 | 330 |
| 331 public GetTouchTranslation(event) { | |
| 227 | 332 var touch = event.targetTouches[0]; |
| 333 return [ | |
| 334 touch.pageX, | |
| 335 touch.pageY | |
| 336 ]; | |
| 337 } | |
| 226 | 338 |
| 339 public GetTouchZoom(event) { | |
| 227 | 340 var touch1 = event.targetTouches[0]; |
| 341 var touch2 = event.targetTouches[1]; | |
| 342 var dx = (touch1.pageX - touch2.pageX); | |
| 343 var dy = (touch1.pageY - touch2.pageY); | |
| 344 var d = Math.sqrt(dx * dx + dy * dy); | |
| 345 return [ | |
| 346 (touch1.pageX + touch2.pageX) / 2.0, | |
| 347 (touch1.pageY + touch2.pageY) / 2.0, | |
| 348 d | |
| 349 ]; | |
| 350 } | |
| 545 | 351 |
| 227 | 352 } |