Mercurial > hg > orthanc-stone
annotate Platforms/Wasm/wasm-viewport.ts @ 453:59b4afa92dee
TS: stop propagating touch events to the whole html doc
| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Fri, 18 Jan 2019 10:16:33 +0100 |
| parents | 8bf717c4e497 |
| children | 50229f6eb4cd |
| rev | line source |
|---|---|
| 230 | 1 var isPendingRedraw = false; |
| 229 | 2 |
| 230 | 3 function ScheduleWebViewportRedraw(cppViewportHandle: any) : void |
| 4 { | |
| 5 if (!isPendingRedraw) { | |
| 6 isPendingRedraw = true; | |
| 7 console.log('Scheduling a refresh of the viewport, as its content changed'); | |
| 8 window.requestAnimationFrame(function() { | |
| 9 isPendingRedraw = false; | |
| 10 Stone.WasmViewport.GetFromCppViewport(cppViewportHandle).Redraw(); | |
| 11 }); | |
| 229 | 12 } |
| 230 | 13 } |
| 226 | 14 |
|
231
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
15 declare function UTF8ToString(any): string; |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
16 |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
17 function CreateWasmViewport(htmlCanvasId: string) : any { |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
18 var cppViewportHandle = CreateCppViewport(); |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
19 var canvasId = UTF8ToString(htmlCanvasId); |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
20 var webViewport = new Stone.WasmViewport(StoneFrameworkModule, canvasId, cppViewportHandle); // viewports are stored in a static map in WasmViewport -> won't be deleted |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
21 webViewport.Initialize(); |
| 314 | 22 |
|
231
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
23 return cppViewportHandle; |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
24 } |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
25 |
| 226 | 26 module Stone { |
| 27 | |
| 28 // export declare type InitializationCallback = () => void; | |
| 29 | |
| 30 // export declare var StoneFrameworkModule : any; | |
| 31 | |
| 32 //const ASSETS_FOLDER : string = "assets/lib"; | |
| 33 //const WASM_FILENAME : string = "orthanc-framework"; | |
| 229 | 34 |
| 226 | 35 export class WasmViewport { |
| 36 | |
| 313 | 37 private static viewportsMapByCppHandle_ : Map<number, WasmViewport> = new Map<number, WasmViewport>(); // key = the C++ handle |
| 38 private static viewportsMapByCanvasId_ : Map<string, WasmViewport> = new Map<string, WasmViewport>(); // key = the canvasId | |
| 229 | 39 |
| 226 | 40 private module_ : any; |
| 41 private canvasId_ : string; | |
| 42 private htmlCanvas_ : HTMLCanvasElement; | |
| 43 private context_ : CanvasRenderingContext2D; | |
| 44 private imageData_ : any = null; | |
| 45 private renderingBuffer_ : any = null; | |
| 46 private touchZoom_ : any = false; | |
| 47 private touchTranslation_ : any = false; | |
| 48 | |
| 49 private ViewportSetSize : Function; | |
| 50 private ViewportRender : Function; | |
| 51 private ViewportMouseDown : Function; | |
| 52 private ViewportMouseMove : Function; | |
| 53 private ViewportMouseUp : Function; | |
| 54 private ViewportMouseEnter : Function; | |
| 55 private ViewportMouseLeave : Function; | |
| 56 private ViewportMouseWheel : Function; | |
| 57 private ViewportKeyPressed : Function; | |
| 58 | |
| 227 | 59 private pimpl_ : any; // Private pointer to the underlying WebAssembly C++ object |
| 60 | |
|
231
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
61 public constructor(module: any, canvasId: string, cppViewport: any) { |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
62 |
|
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
63 this.pimpl_ = cppViewport; |
| 313 | 64 WasmViewport.viewportsMapByCppHandle_[this.pimpl_] = this; |
| 65 WasmViewport.viewportsMapByCanvasId_[canvasId] = this; | |
|
231
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
66 |
| 226 | 67 this.module_ = module; |
| 68 this.canvasId_ = canvasId; | |
| 69 this.htmlCanvas_ = document.getElementById(this.canvasId_) as HTMLCanvasElement; | |
| 244 | 70 if (this.htmlCanvas_ == null) { |
| 71 console.log("Can not create WasmViewport, did not find the canvas whose id is '", this.canvasId_, "'"); | |
| 72 } | |
| 226 | 73 this.context_ = this.htmlCanvas_.getContext('2d'); |
| 74 | |
|
234
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
75 this.ViewportSetSize = this.module_.cwrap('ViewportSetSize', null, [ 'number', 'number', 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
76 this.ViewportRender = this.module_.cwrap('ViewportRender', null, [ 'number', 'number', 'number', 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
77 this.ViewportMouseDown = this.module_.cwrap('ViewportMouseDown', null, [ 'number', 'number', 'number', 'number', 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
78 this.ViewportMouseMove = this.module_.cwrap('ViewportMouseMove', null, [ 'number', 'number', 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
79 this.ViewportMouseUp = this.module_.cwrap('ViewportMouseUp', null, [ 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
80 this.ViewportMouseEnter = this.module_.cwrap('ViewportMouseEnter', null, [ 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
81 this.ViewportMouseLeave = this.module_.cwrap('ViewportMouseLeave', null, [ 'number' ]); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
82 this.ViewportMouseWheel = this.module_.cwrap('ViewportMouseWheel', null, [ 'number', 'number', 'number', 'number', 'number' ]); |
| 327 | 83 this.ViewportKeyPressed = this.module_.cwrap('ViewportKeyPressed', null, [ 'number', 'number', 'string', 'number', 'number' ]); |
| 228 | 84 } |
| 85 | |
|
234
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
86 public GetCppViewport() : number { |
| 228 | 87 return this.pimpl_; |
| 226 | 88 } |
| 89 | |
|
234
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
90 public static GetFromCppViewport(cppViewportHandle: number) : WasmViewport { |
| 313 | 91 if (WasmViewport.viewportsMapByCppHandle_[cppViewportHandle] !== undefined) { |
| 92 return WasmViewport.viewportsMapByCppHandle_[cppViewportHandle]; | |
| 93 } | |
| 94 console.log("WasmViewport not found !"); | |
| 95 return undefined; | |
| 96 } | |
| 97 | |
| 98 public static GetFromCanvasId(canvasId: string) : WasmViewport { | |
| 99 if (WasmViewport.viewportsMapByCanvasId_[canvasId] !== undefined) { | |
| 100 return WasmViewport.viewportsMapByCanvasId_[canvasId]; | |
| 229 | 101 } |
| 102 console.log("WasmViewport not found !"); | |
| 103 return undefined; | |
| 104 } | |
| 105 | |
| 314 | 106 public static ResizeAll() { |
| 107 for (let canvasId in WasmViewport.viewportsMapByCanvasId_) { | |
| 108 WasmViewport.viewportsMapByCanvasId_[canvasId].Resize(); | |
| 109 } | |
| 110 } | |
| 111 | |
| 226 | 112 public Redraw() { |
| 113 if (this.imageData_ === null || | |
| 114 this.renderingBuffer_ === null || | |
| 227 | 115 this.ViewportRender(this.pimpl_, |
| 116 this.imageData_.width, | |
| 226 | 117 this.imageData_.height, |
| 118 this.renderingBuffer_) == 0) { | |
| 119 console.log('The rendering has failed'); | |
| 120 } else { | |
| 121 // Create an accessor to the rendering buffer (i.e. create a | |
| 122 // "window" above the heap of the WASM module), then copy it to | |
| 123 // the ImageData object | |
| 124 this.imageData_.data.set(new Uint8ClampedArray( | |
| 125 this.module_.buffer, | |
| 126 this.renderingBuffer_, | |
| 127 this.imageData_.width * this.imageData_.height * 4)); | |
| 128 | |
| 129 this.context_.putImageData(this.imageData_, 0, 0); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 public Resize() { | |
| 134 if (this.imageData_ != null && | |
| 135 (this.imageData_.width != window.innerWidth || | |
| 136 this.imageData_.height != window.innerHeight)) { | |
| 137 this.imageData_ = null; | |
| 138 } | |
| 139 | |
|
420
8bf717c4e497
canvas size is now defined by the parent div size
am@osimis.io
parents:
327
diff
changeset
|
140 // width/height is defined by the parent width/height |
|
8bf717c4e497
canvas size is now defined by the parent div size
am@osimis.io
parents:
327
diff
changeset
|
141 this.htmlCanvas_.width = this.htmlCanvas_.parentElement.offsetWidth; |
|
8bf717c4e497
canvas size is now defined by the parent div size
am@osimis.io
parents:
327
diff
changeset
|
142 this.htmlCanvas_.height = this.htmlCanvas_.parentElement.offsetHeight; |
|
234
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
143 |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
144 console.log("resizing WasmViewport: ", this.htmlCanvas_.width, "x", this.htmlCanvas_.height); |
|
9afb50d1ac14
configure WasmViewport size relative to window size through html attributes
am@osimis.io
parents:
231
diff
changeset
|
145 |
| 226 | 146 if (this.imageData_ === null) { |
| 147 this.imageData_ = this.context_.getImageData(0, 0, this.htmlCanvas_.width, this.htmlCanvas_.height); | |
| 228 | 148 this.ViewportSetSize(this.pimpl_, this.htmlCanvas_.width, this.htmlCanvas_.height); |
| 226 | 149 |
| 150 if (this.renderingBuffer_ != null) { | |
| 151 this.module_._free(this.renderingBuffer_); | |
| 152 } | |
| 153 | |
| 154 this.renderingBuffer_ = this.module_._malloc(this.imageData_.width * this.imageData_.height * 4); | |
| 313 | 155 } else { |
| 156 this.ViewportSetSize(this.pimpl_, this.htmlCanvas_.width, this.htmlCanvas_.height); | |
| 226 | 157 } |
| 158 | |
| 159 this.Redraw(); | |
| 160 } | |
| 161 | |
|
231
5027cb2feb51
viewport is now part of the Application itself and not global anymore
am@osimis.io
parents:
230
diff
changeset
|
162 public Initialize() { |
| 227 | 163 |
| 164 // Force the rendering of the viewport for the first time | |
| 165 this.Resize(); | |
| 226 | 166 |
| 228 | 167 var that : WasmViewport = this; |
| 227 | 168 // Register an event listener to call the Resize() function |
| 169 // each time the window is resized. | |
| 228 | 170 window.addEventListener('resize', function(event) { |
| 171 that.Resize(); | |
| 172 }, false); | |
| 226 | 173 |
| 227 | 174 this.htmlCanvas_.addEventListener('contextmenu', function(event) { |
| 175 // Prevent right click on the canvas | |
| 176 event.preventDefault(); | |
| 177 }, false); | |
| 178 | |
| 179 this.htmlCanvas_.addEventListener('mouseleave', function(event) { | |
| 228 | 180 that.ViewportMouseLeave(that.pimpl_); |
| 227 | 181 }); |
| 182 | |
| 183 this.htmlCanvas_.addEventListener('mouseenter', function(event) { | |
| 228 | 184 that.ViewportMouseEnter(that.pimpl_); |
| 227 | 185 }); |
| 186 | |
| 187 this.htmlCanvas_.addEventListener('mousedown', function(event) { | |
| 188 var x = event.pageX - this.offsetLeft; | |
| 189 var y = event.pageY - this.offsetTop; | |
| 228 | 190 that.ViewportMouseDown(that.pimpl_, event.button, x, y, 0 /* TODO */); |
| 227 | 191 }); |
| 192 | |
| 193 this.htmlCanvas_.addEventListener('mousemove', function(event) { | |
| 194 var x = event.pageX - this.offsetLeft; | |
| 195 var y = event.pageY - this.offsetTop; | |
| 228 | 196 that.ViewportMouseMove(that.pimpl_, x, y); |
| 227 | 197 }); |
| 198 | |
| 199 this.htmlCanvas_.addEventListener('mouseup', function(event) { | |
| 228 | 200 that.ViewportMouseUp(that.pimpl_); |
| 227 | 201 }); |
| 202 | |
| 203 window.addEventListener('keydown', function(event) { | |
| 327 | 204 var keyChar = event.key; |
| 205 var keyCode = event.keyCode | |
| 206 if (keyChar.length == 1) { | |
| 207 keyCode = 0; // maps to OrthancStone::KeyboardKeys_Generic | |
| 208 } else { | |
| 209 keyChar = null; | |
| 210 } | |
| 211 // console.log("key: ", keyCode, keyChar); | |
| 212 that.ViewportKeyPressed(that.pimpl_, keyCode, keyChar, event.shiftKey, event.ctrlKey, event.altKey); | |
| 227 | 213 }); |
| 226 | 214 |
| 227 | 215 this.htmlCanvas_.addEventListener('wheel', function(event) { |
| 216 var x = event.pageX - this.offsetLeft; | |
| 217 var y = event.pageY - this.offsetTop; | |
| 228 | 218 that.ViewportMouseWheel(that.pimpl_, event.deltaY, x, y, event.ctrlKey); |
| 227 | 219 event.preventDefault(); |
| 220 }); | |
| 221 | |
| 222 this.htmlCanvas_.addEventListener('touchstart', function(event) { | |
|
453
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
223 // don't propagate events to the whole body (this could zoom the entire page instead of zooming the viewport) |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
224 event.preventDefault(); |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
225 event.stopPropagation(); |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
226 |
| 227 | 227 that.ResetTouch(); |
| 228 }); | |
| 229 | |
| 230 this.htmlCanvas_.addEventListener('touchend', function(event) { | |
|
453
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
231 // don't propagate events to the whole body (this could zoom the entire page instead of zooming the viewport) |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
232 event.preventDefault(); |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
233 event.stopPropagation(); |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
234 |
| 227 | 235 that.ResetTouch(); |
| 236 }); | |
| 237 | |
| 238 this.htmlCanvas_.addEventListener('touchmove', function(event) { | |
|
453
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
239 |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
240 // don't propagate events to the whole body (this could zoom the entire page instead of zooming the viewport) |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
241 event.preventDefault(); |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
242 event.stopPropagation(); |
|
59b4afa92dee
TS: stop propagating touch events to the whole html doc
Alain Mazy <alain@mazy.be>
parents:
420
diff
changeset
|
243 |
| 227 | 244 if (that.touchTranslation_.length == 2) { |
| 245 var t = that.GetTouchTranslation(event); | |
| 228 | 246 that.ViewportMouseMove(that.pimpl_, t[0], t[1]); |
| 227 | 247 } |
| 248 else if (that.touchZoom_.length == 3) { | |
| 226 | 249 var z0 = that.touchZoom_; |
| 227 | 250 var z1 = that.GetTouchZoom(event); |
| 228 | 251 that.ViewportMouseMove(that.pimpl_, z0[0], z0[1] - z0[2] + z1[2]); |
| 227 | 252 } |
| 253 else { | |
| 254 // Realize the gesture event | |
| 255 if (event.targetTouches.length == 1) { | |
| 256 // Exactly one finger inside the canvas => Setup a translation | |
| 257 that.touchTranslation_ = that.GetTouchTranslation(event); | |
| 228 | 258 that.ViewportMouseDown(that.pimpl_, |
| 259 1 /* middle button */, | |
| 227 | 260 that.touchTranslation_[0], |
| 261 that.touchTranslation_[1], 0); | |
| 262 } else if (event.targetTouches.length == 2) { | |
| 263 // Exactly 2 fingers inside the canvas => Setup a pinch/zoom | |
| 264 that.touchZoom_ = that.GetTouchZoom(event); | |
| 265 var z0 = that.touchZoom_; | |
| 228 | 266 that.ViewportMouseDown(that.pimpl_, |
| 267 2 /* right button */, | |
| 227 | 268 z0[0], |
| 269 z0[1], 0); | |
| 270 } | |
| 271 } | |
| 272 }); | |
| 273 } | |
| 226 | 274 |
| 275 public ResetTouch() { | |
| 227 | 276 if (this.touchTranslation_ || |
| 277 this.touchZoom_) { | |
| 228 | 278 this.ViewportMouseUp(this.pimpl_); |
| 226 | 279 } |
| 227 | 280 |
| 281 this.touchTranslation_ = false; | |
| 282 this.touchZoom_ = false; | |
| 283 } | |
| 226 | 284 |
| 285 public GetTouchTranslation(event) { | |
| 227 | 286 var touch = event.targetTouches[0]; |
| 287 return [ | |
| 288 touch.pageX, | |
| 289 touch.pageY | |
| 290 ]; | |
| 291 } | |
| 226 | 292 |
| 293 public GetTouchZoom(event) { | |
| 227 | 294 var touch1 = event.targetTouches[0]; |
| 295 var touch2 = event.targetTouches[1]; | |
| 296 var dx = (touch1.pageX - touch2.pageX); | |
| 297 var dy = (touch1.pageY - touch2.pageY); | |
| 298 var d = Math.sqrt(dx * dx + dy * dy); | |
| 299 return [ | |
| 300 (touch1.pageX + touch2.pageX) / 2.0, | |
| 301 (touch1.pageY + touch2.pageY) / 2.0, | |
| 302 d | |
| 303 ]; | |
| 304 } | |
| 226 | 305 |
| 227 | 306 } |
| 226 | 307 } |
| 308 |