Publish Vulpes Preview 15 sources for desktop, Android and Tundra
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
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25901 changed files with 9982925 additions and 369 deletions
170
assets/webapps/camera.gaiamobile.org/js/views/zoom-bar.js
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170
assets/webapps/camera.gaiamobile.org/js/views/zoom-bar.js
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define([
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'require',
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'exports',
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'module',
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'debug',
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'view',
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'lib/bind',
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'lib/orientation'
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], function (require, exports, module) {
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'use strict';
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var debug = require('debug')('view:zoom-bar');
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var View = require('view');
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var bind = require('lib/bind');
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var orientation = require('lib/orientation');
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var lastTouch = null;
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var clamp = function (value, minimum, maximum) {
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return Math.min(Math.max(value, minimum), maximum);
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};
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module.exports = View.extend({
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name: 'zoom-bar',
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initialize: function () {
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this.render();
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this._orientation = orientation.get();
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this.zoomBarIndicatorInterval = 10;
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this.zoomBarInactivityTimeout = 3000;
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},
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render: function () {
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this.el.innerHTML = this.template();
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this.els.maxIndicator = this.find('.zoom-bar-max-indicator');
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this.els.minIndicator = this.find('.zoom-bar-min-indicator');
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this.els.inner = this.find('.zoom-bar-inner');
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this.els.track = this.find('.zoom-bar-track');
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this.els.scrubber = this.find('.zoom-bar-scrubber');
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delete this.template;
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debug('rendered');
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return this.bindEvents();
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},
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bindEvents: function () {
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bind(this.els.scrubber, 'touchstart', this.onTouchStart);
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bind(this.els.scrubber, 'touchmove', this.onTouchMove);
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bind(this.els.scrubber, 'touchend', this.onTouchEnd);
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bind(this.els.maxIndicator, 'click', this.onIncrement);
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bind(this.els.minIndicator, 'click', this.onDecrement);
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orientation.on('orientation', this.setOrientation);
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return this;
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},
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template: function () {
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return '<div class="zoom-bar-max-indicator"></div>' + '<div class="zoom-bar-inner">' + '<div class="zoom-bar-track"></div>' + '<div class="zoom-bar-scrubber"></div>' + '</div>' + '<div class="zoom-bar-min-indicator"></div>';
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},
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onTouchStart: function (evt) {
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lastTouch = evt.touches[0];
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this.resetInactivityTimeout();
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this.setScrubberActive(true);
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this._innerHeight = this.els.inner.offsetHeight;
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evt.stopPropagation();
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},
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onTouchMove: function (evt) {
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if (!lastTouch) {
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return;
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}
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var touch = evt.touches[0];
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var deltaX = lastTouch.pageX - touch.pageX;
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var deltaY = lastTouch.pageY - touch.pageY;
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var scale = 100 / this._innerHeight;
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deltaX *= scale;
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deltaY *= scale;
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switch (this._orientation) {
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case 0:
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this.setValue(this._value + deltaY, true);
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break;
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case 90:
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this.setValue(this._value + deltaX, true);
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break;
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case 180:
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this.setValue(this._value - deltaY, true);
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break;
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case 270:
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this.setValue(this._value - deltaX, true);
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break;
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}
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lastTouch = touch;
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},
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onTouchEnd: function (evt) {
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if (!lastTouch) {
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return;
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}
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lastTouch = null;
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this.resetInactivityTimeout();
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this.setScrubberActive(false);
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},
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onIncrement: function (evt) {
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this.setValue(this._value + this.zoomBarIndicatorInterval, true);
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this.flashScrubberActive();
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evt.stopPropagation();
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},
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onDecrement: function (evt) {
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this.setValue(this._value - this.zoomBarIndicatorInterval, true);
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this.flashScrubberActive();
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evt.stopPropagation();
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},
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_orientation: 0,
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setOrientation: function (orientation) {
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var el = this.el;
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el.classList.remove('zooming');
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window.requestAnimationFrame(function () {
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el.style.transitionDuration = '0ms';
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window.requestAnimationFrame(function () {
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el.style.transitionDuration = '';
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});
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});
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this._orientation = orientation;
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},
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_value: 0,
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setValue: function (value, emitChange) {
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this.resetInactivityTimeout();
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var lastValue = this._value;
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this._value = clamp(value, 0, 100);
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if (this._value === lastValue) {
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return;
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}
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if (this._value === 0) {
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this.els.minIndicator.classList.add('active');
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} else {
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this.els.minIndicator.classList.remove('active');
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}
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if (this._value === 100) {
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this.els.maxIndicator.classList.add('active');
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} else {
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this.els.maxIndicator.classList.remove('active');
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}
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var self = this;
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window.requestAnimationFrame(function () {
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self.els.track.style.top = 100 - self._value + '%';
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self.els.scrubber.style.bottom = self._value + '%';
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});
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if (emitChange) {
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this.emit('change', this._value);
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}
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},
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setScrubberActive: function (active) {
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window.clearTimeout(this._scrubberTimeout);
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if (active) {
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this.els.scrubber.classList.add('active');
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} else {
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this.els.scrubber.classList.remove('active');
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}
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},
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flashScrubberActive: function () {
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this.setScrubberActive(true);
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var self = this;
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this._scrubberTimeout = window.setTimeout(function () {
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self.setScrubberActive(false);
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}, 150);
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},
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resetInactivityTimeout: function () {
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window.clearTimeout(this._inactivityTimeout);
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this.show();
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var self = this;
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this._inactivityTimeout = window.setTimeout(function () {
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self.hide();
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}, this.zoomBarInactivityTimeout);
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},
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show: function () {
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this.el.classList.add('zooming');
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},
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hide: function () {
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this.el.classList.remove('zooming');
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}
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});
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});
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