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Merge pull request #296 from koenbok/touchemulator
Touch Emulator
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# exports.Hints = require "./Hints" | # exports.Hints = require "./Hints" | ||
exports.TouchEmulator = require "./TouchEmulator" | |||
exports.MobileScrollFix = require "./MobileScrollFix" | exports.MobileScrollFix = require "./MobileScrollFix" | ||
exports.OmitNew = require "./OmitNew" | exports.OmitNew = require "./OmitNew" |
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Utils = require "../Utils" | |||
{BaseClass} = require "../BaseClass" | |||
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createTouch = (event, identifier, offset={x:0, y:0}) -> | |||
return touch = | |||
identifier: identifier | |||
target: event.target | |||
pageX: event.pageX + offset.x | |||
pageY: event.pageY + offset.y | |||
clientX: event.clientX + offset.x | |||
clientY: event.clientY + offset.y | |||
screenX: event.screenX + offset.x | |||
screenY: event.screenY + offset.y | |||
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dispatchTouchEvent = (type, target, event, offset) -> | |||
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target ?= event.target | |||
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touchEvent = document.createEvent("MouseEvent") | |||
touchEvent.initMouseEvent(type, true, true, window, | |||
event.detail, event.screenX, event.screenY, | |||
event.clientX, event.clientY, | |||
event.ctrlKey, event.shiftKey, event.altKey, event.metaKey, | |||
event.button, event.relatedTarget) | |||
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touches = [] | |||
touches.push(createTouch(event, 1)) | |||
touches.push(createTouch(event, 2, offset)) if offset | |||
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touchEvent.touches = touchEvent.changedTouches = touchEvent.targetTouches = touches | |||
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target.dispatchEvent(touchEvent) | |||
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cancelEvent = (event) -> | |||
event.preventDefault() | |||
event.stopPropagation() | |||
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class TouchEmulator extends BaseClass | |||
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constructor: -> | |||
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if not @isHammerTouchSupported() | |||
throw new Error "Touch emulation for hammer is not supported" | |||
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@touchPointerImage = "framer/images/cursor@2x.png" | |||
@touchPointerImageActive = "framer/images/cursor-active@2x.png" | |||
@touchPointerImageSize = 64 | |||
@touchPointerInitialOffset = {x:0, y:0} | |||
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@keyPinchCode = 18 # Alt | |||
@keyPanCode = 91 # Command | |||
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@context = new Framer.Context name:"TouchEmulator" | |||
@context._element.style.zIndex = 10000 | |||
@wrap = @context.domEventManager.wrap | |||
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@wrap(document).addEventListener("mousedown", @mousedown, true) | |||
@wrap(document).addEventListener("mousemove", @mousemovePosition, true) | |||
@wrap(document).addEventListener("keydown", @keydown, true) | |||
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@isMouseDown = false | |||
@isPinchKeyDown = false | |||
@isPanKeyDown = false | |||
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touchPointerInitialOffset = @touchPointerInitialOffset | |||
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@context.run => | |||
@touchPointLayer = new Layer | |||
width: @touchPointerImageSize | |||
height: @touchPointerImageSize | |||
image: @touchPointerImage | |||
opacity: 0 | |||
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showTouchCursor: -> | |||
@touchPointLayer.animateStop() | |||
@touchPointLayer.midX = @point.x | |||
@touchPointLayer.midY = @point.y | |||
@touchPointLayer.scale = 1.8 | |||
@touchPointLayer.animate | |||
properties: | |||
opacity: 1 | |||
scale: 1 | |||
# midX: @point.x + @touchPointerInitialOffset.x | |||
# midY: @point.y + @touchPointerInitialOffset.y | |||
time: 0.1 | |||
curve: "ease-out" | |||
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hideTouchCursor: -> | |||
@touchPointLayer.animateStop() | |||
@touchPointLayer.animate | |||
properties: | |||
opacity: 0 | |||
scale: 1.2 | |||
time: 0.08 | |||
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isHammerTouchSupported: -> | |||
window.ontouchstart is null | |||
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keydown: (event) => | |||
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if event.keyCode is @keyPinchCode | |||
@isPinchKeyDown = true | |||
@startPoint = @centerPoint = null | |||
@showTouchCursor() | |||
@touchPointLayer.midX = @point.x | |||
@touchPointLayer.midY = @point.y | |||
@wrap(document).addEventListener("keyup", @keyup, true) | |||
@wrap(document).addEventListener("mousemove", @mousemove, true) | |||
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if event.keyCode is @keyPanCode | |||
@isPanKeyDown = true | |||
cancelEvent(event) | |||
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keyup: (event) => | |||
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if event.keyCode is @keyPinchCode | |||
cancelEvent(event) | |||
@isPinchKeyDown = false | |||
@hideTouchCursor() | |||
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@wrap(document).removeEventListener("mousemove", @mousemove, true) | |||
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if event.keyCode is @keyPanCode | |||
cancelEvent(event) | |||
@centerPoint = Utils.pointCenter(@touchPoint, @point) | |||
@isPanKeyDown = false | |||
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mousedown: (event) => | |||
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cancelEvent(event) | |||
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@isMouseDown = true | |||
@target = event.target | |||
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@wrap(document).addEventListener("mousemove", @mousemove, true) | |||
@wrap(document).addEventListener("mouseup", @mouseup, true) | |||
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if @isPinchKeyDown | |||
dispatchTouchEvent("touchstart", @target, event, @touchPointDelta) | |||
else | |||
dispatchTouchEvent("touchstart", @target, event) | |||
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@touchPointLayer.image = @touchPointerImageActive | |||
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mousemovePosition: (event) => | |||
@point = | |||
x: event.pageX | |||
y: event.pageY | |||
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mousemove: (event) => | |||
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cancelEvent(event) | |||
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@startPoint ?= | |||
x: event.pageX | |||
y: event.pageY | |||
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@centerPoint ?= @startPoint | |||
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if @isPinchKeyDown and not @isPanKeyDown | |||
@touchPoint = Utils.pointAdd(@touchPointerInitialOffset, @pinchPoint(@point, @centerPoint)) | |||
@touchPointDelta = Utils.pointSubtract(@point, @touchPoint) | |||
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if @isPinchKeyDown and @isPanKeyDown | |||
@touchPoint = @panPoint(@point, @touchPointDelta) | |||
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if @isPinchKeyDown or @isPanKeyDown | |||
@touchPointLayer.visible = true | |||
@touchPointLayer.midX = @touchPoint.x | |||
@touchPointLayer.midY = @touchPoint.y | |||
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if @isPinchKeyDown or @isPanKeyDown | |||
dispatchTouchEvent("touchmove", @target, event, @touchPointDelta) | |||
else | |||
dispatchTouchEvent("touchmove", @target, event) | |||
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mouseup: (event) => | |||
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@isMouseDown = false | |||
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cancelEvent(event) | |||
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@wrap(document).removeEventListener("mousemove", @mousemove, true) | |||
@wrap(document).removeEventListener("mouseup", @mouseup, true) | |||
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if @isPinchKeyDown or @isPanKeyDown | |||
dispatchTouchEvent("touchend", @target, event, @touchPointDelta) | |||
else | |||
dispatchTouchEvent("touchend", @target, event) | |||
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@touchPointLayer.image = @touchPointerImage | |||
@hideTouchCursor() | |||
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pinchPoint: (point, centerPoint) -> | |||
return Utils.pointSubtract(centerPoint, | |||
Utils.pointSubtract(point, centerPoint)) | |||
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panPoint: (point, offsetPoint) -> | |||
return Utils.pointSubtract(point, offsetPoint) | |||
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touchEmulator = null | |||
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exports.enable = -> | |||
return if Utils.isTouch() | |||
touchEmulator ?= new TouchEmulator() |
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