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angular-gallery

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Responsive gallery for Angular with touch screen support.

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var Touches = /** @class */ (function () { function Touches(properties) { var _this = this; this.eventType = undefined; this.handlers = {}; this.startX = 0; this.startY = 0; this.lastTap = 0; this.doubleTapMinTimeout = 300; this.tapMinTimeout = 200; this.touchstartTime = 0; this.i = 0; this.isMousedown = false; this.touchListeners = { "touchstart": "handleTouchstart", "touchmove": "handleTouchmove", "touchend": "handleTouchend" }; this.mouseListeners = { "mousedown": "handleMousedown", "mousemove": "handleMousemove", "mouseup": "handleMouseup", "wheel": "handleWheel" }; this.otherListeners = { "resize": "handleResize" }; /* * Listeners */ /* Touchstart */ this.handleTouchstart = function (event) { _this.elementPosition = _this.getElementPosition(); _this.touchstartTime = new Date().getTime(); if (_this.eventType === undefined) { _this.getTouchstartPosition(event); } _this.runHandler("touchstart", event); }; /* Touchmove */ this.handleTouchmove = function (event) { var touches = event.touches; // Pan if (_this.detectPan(touches)) { _this.runHandler("pan", event); } // Pinch if (_this.detectPinch(event)) { _this.runHandler("pinch", event); } // Linear swipe switch (_this.detectLinearSwipe(event)) { case "horizontal-swipe": event.swipeType = "horizontal-swipe"; _this.runHandler("horizontal-swipe", event); break; case "vertical-swipe": event.swipeType = "vertical-swipe"; _this.runHandler("vertical-swipe", event); break; } // Linear swipe if (_this.detectLinearSwipe(event) || _this.eventType === 'horizontal-swipe' || _this.eventType === 'vertical-swipe') { _this.handleLinearSwipe(event); } }; /* Touchend */ this.handleTouchend = function (event) { var touches = event.touches; // Double Tap if (_this.detectDoubleTap()) { _this.runHandler("double-tap", event); } // Tap _this.detectTap(); _this.runHandler("touchend", event); _this.eventType = 'touchend'; if (touches && touches.length === 0) { _this.eventType = undefined; _this.i = 0; } }; /* Mousedown */ this.handleMousedown = function (event) { _this.isMousedown = true; _this.elementPosition = _this.getElementPosition(); _this.touchstartTime = new Date().getTime(); if (_this.eventType === undefined) { _this.getMousedownPosition(event); } _this.runHandler("mousedown", event); }; /* Mousemove */ this.handleMousemove = function (event) { //event.preventDefault(); if (!_this.isMousedown) { return; } // Pan _this.runHandler("pan", event); // Linear swipe switch (_this.detectLinearSwipe(event)) { case "horizontal-swipe": event.swipeType = "horizontal-swipe"; _this.runHandler("horizontal-swipe", event); break; case "vertical-swipe": event.swipeType = "vertical-swipe"; _this.runHandler("vertical-swipe", event); break; } // Linear swipe if (_this.detectLinearSwipe(event) || _this.eventType === 'horizontal-swipe' || _this.eventType === 'vertical-swipe') { _this.handleLinearSwipe(event); } }; /* Mouseup */ this.handleMouseup = function (event) { // Tap _this.detectTap(); _this.isMousedown = false; _this.runHandler("mouseup", event); _this.eventType = undefined; _this.i = 0; }; /* Wheel */ this.handleWheel = function (event) { _this.runHandler("wheel", event); }; /* Resize */ this.handleResize = function (event) { _this.runHandler("resize", event); }; this.properties = properties; this.element = this.properties.element; this.elementPosition = this.getElementPosition(); this.toggleEventListeners('addEventListener'); } Touches.prototype.destroy = function () { this.toggleEventListeners('removeEventListener'); }; Touches.prototype.toggleEventListeners = function (action) { var listeners; if (this.properties.listeners === 'mouse and touch') { listeners = Object.assign(this.touchListeners, this.mouseListeners); } else { listeners = this.detectTouchScreen() ? this.touchListeners : this.mouseListeners; } if (this.properties.resize) { listeners = Object.assign(listeners, this.otherListeners); } for (var listener in listeners) { var handler = listeners[listener]; // Window if (listener === "resize") { if (action === 'addEventListener') { window.addEventListener(listener, this[handler], false); } if (action === 'removeEventListener') { window.removeEventListener(listener, this[handler], false); } // Document } else if (listener === 'mouseup' || listener === "mousemove") { if (action === 'addEventListener') { document.addEventListener(listener, this[handler], false); } if (action === 'removeEventListener') { document.removeEventListener(listener, this[handler], false); } // Element } else { if (action === 'addEventListener') { this.element.addEventListener(listener, this[handler], false); } if (action === 'removeEventListener') { this.element.removeEventListener(listener, this[handler], false); } } } }; Touches.prototype.handleLinearSwipe = function (event) { //event.preventDefault(); this.i++; if (this.i > 3) { this.eventType = this.getLinearSwipeType(event); } if (this.eventType === 'horizontal-swipe') { this.runHandler('horizontal-swipe', event); } if (this.eventType === 'vertical-swipe') { this.runHandler('vertical-swipe', event); } }; Touches.prototype.runHandler = function (eventName, response) { if (this.handlers[eventName]) { this.handlers[eventName](response); } }; /* * Detection */ Touches.prototype.detectPan = function (touches) { return touches.length === 1 && !this.eventType || this.eventType === 'pan'; }; Touches.prototype.detectDoubleTap = function () { var _this = this; if (this.eventType != undefined) { return; } var currentTime = new Date().getTime(); var tapLength = currentTime - this.lastTap; clearTimeout(this.doubleTapTimeout); if (tapLength < this.doubleTapMinTimeout && tapLength > 0) { return true; } else { this.doubleTapTimeout = setTimeout(function () { clearTimeout(_this.doubleTapTimeout); }, this.doubleTapMinTimeout); } this.lastTap = currentTime; }; Touches.prototype.detectTap = function () { if (this.eventType != undefined) { return; } var currentTime = new Date().getTime(); var tapLength = currentTime - this.touchstartTime; if (tapLength > 0) { if (tapLength < this.tapMinTimeout) { this.runHandler("tap", event); } else { this.runHandler("longtap", event); } } }; Touches.prototype.detectPinch = function (event) { var touches = event.touches; return (touches.length === 2 && this.eventType === undefined) || this.eventType === 'pinch'; }; Touches.prototype.detectLinearSwipe = function (event) { var touches = event.touches; if (touches) { if (touches.length === 1 && !this.eventType || this.eventType === 'horizontal-swipe' || this.eventType === 'vertical-swipe') { return this.getLinearSwipeType(event); } } else { if (!this.eventType || this.eventType === 'horizontal-swipe' || this.eventType === 'vertical-swipe') { return this.getLinearSwipeType(event); } } }; Touches.prototype.getLinearSwipeType = function (event) { if (this.eventType !== 'horizontal-swipe' && this.eventType !== 'vertical-swipe') { var movementX = Math.abs(this.moveLeft(0, event) - this.startX); var movementY = Math.abs(this.moveTop(0, event) - this.startY); if ((movementY * 3) > movementX) { return 'vertical-swipe'; } else { return 'horizontal-swipe'; } } else { return this.eventType; } }; Touches.prototype.getElementPosition = function () { return this.element.getBoundingClientRect(); }; Touches.prototype.getTouchstartPosition = function (event) { this.startX = event.touches[0].clientX - this.elementPosition.left; this.startY = event.touches[0].clientY - this.elementPosition.top; }; Touches.prototype.getMousedownPosition = function (event) { this.startX = event.clientX - this.elementPosition.left; this.startY = event.clientY - this.elementPosition.top; }; Touches.prototype.moveLeft = function (index, event) { var touches = event.touches; if (touches) { return touches[index].clientX - this.elementPosition.left; } else { return event.clientX - this.elementPosition.left; } }; Touches.prototype.moveTop = function (index, event) { var touches = event.touches; if (touches) { return touches[index].clientY - this.elementPosition.top; } else { return event.clientY - this.elementPosition.top; } }; Touches.prototype.detectTouchScreen = function () { var prefixes = ' -webkit- -moz- -o- -ms- '.split(' '); var mq = function (query) { return window.matchMedia(query).matches; }; if (('ontouchstart' in window)) { return true; } // include the 'heartz' as a way to have a non matching MQ to help terminate the join // https://git.io/vznFH var query = ['(', prefixes.join('touch-enabled),('), 'heartz', ')'].join(''); return mq(query); }; /* Public properties and methods */ Touches.prototype.on = function (event, handler) { if (event) { this.handlers[event] = handler; } }; return Touches; }()); export { Touches }; //# 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interface Properties {\r\n    element: HTMLElement;\r\n    listeners?: 'auto' | 'mouse and touch';\r\n    resize?: boolean;\r\n}\r\n\r\nexport type EventType = undefined | 'touchend' | 'pan' | 'pinch' | 'horizontal-swipe' | 'vertical-swipe' | 'tap' | 'longtap';\r\nexport type TouchHandler = 'handleTouchstart' | 'handleTouchmove' | 'handleTouchend';\r\nexport type MouseHandler = 'handleMousedown' | 'handleMousemove' | 'handleMouseup';\r\n\r\nexport class Touches {\r\n    properties: Properties;\r\n    element: HTMLElement;\r\n    elementPosition: ClientRect;\r\n    eventType: EventType = undefined;\r\n    handlers: any = {};\r\n    startX = 0;\r\n    startY = 0;\r\n    lastTap = 0;\r\n    doubleTapTimeout: any;\r\n    doubleTapMinTimeout = 300;\r\n    tapMinTimeout = 200;\r\n    touchstartTime = 0;\r\n    i: number = 0;\r\n    isMousedown = false;\r\n\r\n    touchListeners: any = {\r\n        \"touchstart\": \"handleTouchstart\",\r\n        \"touchmove\": \"handleTouchmove\",\r\n        \"touchend\": \"handleTouchend\"\r\n    }\r\n    mouseListeners: any = {\r\n        \"mousedown\": \"handleMousedown\",\r\n        \"mousemove\": \"handleMousemove\",\r\n        \"mouseup\": \"handleMouseup\",\r\n        \"wheel\": \"handleWheel\"\r\n    }\r\n    otherListeners: any = {\r\n        \"resize\": \"handleResize\"\r\n    }\r\n\r\n    constructor(properties: Properties) {\r\n        this.properties = properties;\r\n        this.element = this.properties.element;\r\n        this.elementPosition = this.getElementPosition();\r\n\r\n        this.toggleEventListeners('addEventListener');\r\n    }\r\n\r\n    destroy() {\r\n        this.toggleEventListeners('removeEventListener');\r\n    }\r\n\r\n    toggleEventListeners(action: 'addEventListener' | 'removeEventListener') {\r\n        let listeners;\r\n\r\n        if (this.properties.listeners === 'mouse and touch') {\r\n            listeners = Object.assign(this.touchListeners, this.mouseListeners);\r\n        } else {\r\n            listeners = this.detectTouchScreen() ? this.touchListeners : this.mouseListeners;\r\n        }\r\n\r\n        if (this.properties.resize) {\r\n            listeners = Object.assign(listeners, this.otherListeners);\r\n        }\r\n\r\n        for (var listener in listeners) {\r\n            const handler: MouseHandler = listeners[listener];\r\n\r\n            // Window\r\n            if (listener === \"resize\") {\r\n                if (action === 'addEventListener') {\r\n                    window.addEventListener(listener, this[handler], false);\r\n                }\r\n                if (action === 'removeEventListener') {\r\n                    window.removeEventListener(listener, this[handler], false);\r\n                }\r\n            // Document\r\n            } else if (listener === 'mouseup' || listener === \"mousemove\") {\r\n                if (action === 'addEventListener') {\r\n                    document.addEventListener(listener, this[handler], false);\r\n                }\r\n                if (action === 'removeEventListener') {\r\n                    document.removeEventListener(listener, this[handler], false);\r\n                }\r\n            // Element\r\n            } else {\r\n                if (action === 'addEventListener') {\r\n                    this.element.addEventListener(listener, this[handler], false);\r\n                }\r\n                if (action === 'removeEventListener') {\r\n                    this.element.removeEventListener(listener, this[handler], false);\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    /*\r\n     * Listeners\r\n     */\r\n\r\n    /* Touchstart */\r\n\r\n    handleTouchstart = (event: any) => {\r\n        this.elementPosition = this.getElementPosition();\r\n        this.touchstartTime = new Date().getTime();\r\n\r\n        if (this.eventType === undefined) {\r\n            this.getTouchstartPosition(event);\r\n        }\r\n\r\n        this.runHandler(\"touchstart\", event);\r\n    }\r\n\r\n\r\n    /* Touchmove */\r\n\r\n    handleTouchmove = (event: any) => {\r\n        const touches = event.touches;\r\n\r\n        // Pan\r\n        if (this.detectPan(touches)) {\r\n            this.runHandler(\"pan\", event);\r\n        }\r\n\r\n        // Pinch\r\n        if (this.detectPinch(event)) {\r\n            this.runHandler(\"pinch\", event);\r\n        }\r\n\r\n        // Linear swipe\r\n        switch (this.detectLinearSwipe(event)) {\r\n            case \"horizontal-swipe\":\r\n                event.swipeType = \"horizontal-swipe\";\r\n                this.runHandler(\"horizontal-swipe\", event);\r\n                break;\r\n            case \"vertical-swipe\":\r\n                event.swipeType = \"vertical-swipe\";\r\n                this.runHandler(\"vertical-swipe\", event);\r\n                break;\r\n        }\r\n\r\n        // Linear swipe\r\n        if (this.detectLinearSwipe(event) ||\r\n            this.eventType === 'horizontal-swipe' ||\r\n            this.eventType === 'vertical-swipe') {\r\n\r\n            this.handleLinearSwipe(event);\r\n        }\r\n    }\r\n\r\n    handleLinearSwipe(event: any) {\r\n        //event.preventDefault();\r\n\r\n        this.i++;\r\n\r\n        if (this.i > 3) {\r\n            this.eventType = this.getLinearSwipeType(event);\r\n        }\r\n\r\n        if (this.eventType === 'horizontal-swipe') {\r\n            this.runHandler('horizontal-swipe', event);\r\n        }\r\n\r\n        if (this.eventType === 'vertical-swipe') {\r\n            this.runHandler('vertical-swipe', event);\r\n        }\r\n    }\r\n\r\n\r\n    /* Touchend */\r\n\r\n    handleTouchend = (event: any) => {\r\n        const touches = event.touches;\r\n\r\n        // Double Tap\r\n        if (this.detectDoubleTap()) {\r\n            this.runHandler(\"double-tap\", event);\r\n        }\r\n\r\n        // Tap\r\n        this.detectTap();\r\n\r\n        this.runHandler(\"touchend\", event);\r\n        this.eventType = 'touchend';\r\n\r\n        if (touches && touches.length === 0) {\r\n            this.eventType = undefined;\r\n            this.i = 0;\r\n        }\r\n    }\r\n\r\n\r\n    /* Mousedown */\r\n\r\n    handleMousedown = (event: any) => {\r\n        this.isMousedown = true;\r\n        this.elementPosition = this.getElementPosition();\r\n        this.touchstartTime = new Date().getTime();\r\n\r\n        if (this.eventType === undefined) {\r\n            this.getMousedownPosition(event);\r\n        }\r\n\r\n        this.runHandler(\"mousedown\", event);\r\n    }\r\n\r\n\r\n    /* Mousemove */\r\n\r\n    handleMousemove = (event: any) => {\r\n        //event.preventDefault();\r\n        \r\n        if (!this.isMousedown) {\r\n            return;\r\n        }\r\n\r\n        // Pan\r\n        this.runHandler(\"pan\", event);\r\n\r\n        // Linear swipe\r\n        switch (this.detectLinearSwipe(event)) {\r\n            case \"horizontal-swipe\":\r\n                event.swipeType = \"horizontal-swipe\";\r\n                this.runHandler(\"horizontal-swipe\", event);\r\n                break;\r\n            case \"vertical-swipe\":\r\n                event.swipeType = \"vertical-swipe\";\r\n                this.runHandler(\"vertical-swipe\", event);\r\n                break;\r\n        }\r\n\r\n        // Linear swipe\r\n        if (this.detectLinearSwipe(event) ||\r\n            this.eventType === 'horizontal-swipe' ||\r\n            this.eventType === 'vertical-swipe') {\r\n\r\n            this.handleLinearSwipe(event);\r\n        }\r\n    }\r\n\r\n\r\n    /* Mouseup */\r\n\r\n    handleMouseup = (event: any) => {\r\n\r\n        // Tap\r\n        this.detectTap();\r\n\r\n        this.isMousedown = false;\r\n        this.runHandler(\"mouseup\", event);\r\n        this.eventType = undefined;\r\n        this.i = 0;\r\n    }\r\n\r\n\r\n    /* Wheel */\r\n\r\n    handleWheel = (event: any) => {\r\n        this.runHandler(\"wheel\", event);\r\n    }\r\n\r\n    /* Resize */\r\n\r\n    handleResize = (event: any) => {\r\n        this.runHandler(\"resize\", event);\r\n    }\r\n\r\n    runHandler(eventName: any, response: any) {\r\n        if (this.handlers[eventName]) {\r\n            this.handlers[eventName](response);\r\n        }\r\n    }\r\n\r\n\r\n    /*\r\n     * Detection\r\n     */\r\n\r\n    detectPan(touches: any) {\r\n        return touches.length === 1 && !this.eventType || this.eventType === 'pan';\r\n    }\r\n\r\n    detectDoubleTap() {\r\n        if (this.eventType != undefined) {\r\n            return;\r\n        }\r\n\r\n        const currentTime = new Date().getTime();\r\n        const tapLength = currentTime - this.lastTap;\r\n\r\n        clearTimeout(this.doubleTapTimeout);\r\n\r\n        if (tapLength < this.doubleTapMinTimeout && tapLength > 0) {\r\n            return true;\r\n        } else {\r\n            this.doubleTapTimeout = setTimeout(() => {\r\n                clearTimeout(this.doubleTapTimeout);\r\n            }, this.doubleTapMinTimeout);\r\n        }\r\n        this.lastTap = currentTime;\r\n    }\r\n\r\n    detectTap(): void {\r\n        if (this.eventType != undefined) {\r\n            return;\r\n        }\r\n\r\n        const currentTime = new Date().getTime();\r\n        const tapLength = currentTime - this.touchstartTime;\r\n\r\n        if (tapLength > 0) {\r\n            if (tapLength < this.tapMinTimeout) {\r\n                this.runHandler(\"tap\", event);\r\n            } else {\r\n                this.runHandler(\"longtap\", event);\r\n            }\r\n        }\r\n    }\r\n\r\n    detectPinch(event: any) {\r\n        const touches = event.touches;\r\n        return (touches.length === 2 && this.eventType === undefined) || this.eventType === 'pinch';\r\n    }\r\n\r\n    detectLinearSwipe(event: any) {\r\n        const touches = event.touches;\r\n\r\n        if (touches) {\r\n            if (touches.length === 1 && !this.eventType || this.eventType === 'horizontal-swipe' || this.eventType === 'vertical-swipe') {\r\n                return this.getLinearSwipeType(event);\r\n            }\r\n        } else {\r\n            if (!this.eventType || this.eventType === 'horizontal-swipe' || this.eventType === 'vertical-swipe') {\r\n                return this.getLinearSwipeType(event);\r\n            }\r\n        }\r\n    }\r\n\r\n    getLinearSwipeType(event: any) {\r\n        if (this.eventType !== 'horizontal-swipe' && this.eventType !== 'vertical-swipe') {\r\n            const movementX = Math.abs(this.moveLeft(0, event) - this.startX);\r\n            const movementY = Math.abs(this.moveTop(0, event) - this.startY);\r\n\r\n            if ((movementY * 3) > movementX) {\r\n                return 'vertical-swipe';\r\n            } else {\r\n                return 'horizontal-swipe';\r\n            }\r\n        } else {\r\n            return this.eventType;\r\n        }\r\n    }\r\n\r\n    getElementPosition() {\r\n        return this.element.getBoundingClientRect();\r\n    }\r\n\r\n    getTouchstartPosition(event: any) {\r\n        this.startX = event.touches[0].clientX - this.elementPosition.left;\r\n        this.startY = event.touches[0].clientY - this.elementPosition.top;\r\n    }\r\n\r\n    getMousedownPosition(event: any) {\r\n        this.startX = event.clientX - this.elementPosition.left;\r\n        this.startY = event.clientY - this.elementPosition.top;\r\n    }\r\n\r\n    moveLeft(index: any, event: any) {\r\n        const touches = event.touches;\r\n\r\n        if (touches) {\r\n            return touches[index].clientX - this.elementPosition.left;\r\n        } else {\r\n            return event.clientX - this.elementPosition.left;\r\n        }\r\n    }\r\n\r\n    moveTop(index: any, event: any) {\r\n        const touches = event.touches;\r\n\r\n        if (touches) {\r\n            return touches[index].clientY - this.elementPosition.top;\r\n        } else {\r\n            return event.clientY - this.elementPosition.top;\r\n        }\r\n    }\r\n\r\n    detectTouchScreen() {\r\n        var prefixes = ' -webkit- -moz- -o- -ms- '.split(' ');\r\n        var mq = function(query: any) {\r\n            return window.matchMedia(query).matches;\r\n        }\r\n\r\n        if (('ontouchstart' in window)) {\r\n            return true;\r\n        }\r\n\r\n        // include the 'heartz' as a way to have a non matching MQ to help terminate the join\r\n        // https://git.io/vznFH\r\n        var query = ['(', prefixes.join('touch-enabled),('), 'heartz', ')'].join('');\r\n        return mq(query);\r\n    }\r\n\r\n\r\n    /* Public properties and methods */\r\n    on(event: EventType, handler: Function) {\r\n        if (event) {\r\n            this.handlers[event] = handler;\r\n        }\r\n    }\r\n}"]}