/* <copyright>
Copyright (c) 2012, Motorola Mobility LLC.
All Rights Reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of Motorola Mobility LLC nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
</copyright> */
////////////////////////////////////////////////////////////////////////
//
var Montage = require("montage/core/core").Montage,
Component = require("montage/ui/component").Component;
////////////////////////////////////////////////////////////////////////
//Exporting as ColorWheel
exports.GradientPicker = Montage.create(Component, {
////////////////////////////////////////////////////////////////////
//
hasTemplate: {
value: true
},
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//
_updating: {
value: false
},
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//
_value: {
value: null
},
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//
value: {
get: function() {return this._value;},
set: function(value) {this._value = value;}
},
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//
_mode: {
value: 'linear'
},
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//
mode: {
get: function() {return this._mode;},
set: function(value) {
//
this.application.ninja.colorController.colorPopupManager.hideGradientChipPopup();
//
this._mode = value;
//
this._dispatchEvent('change', false);
}
},
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//
_trackData: {
value: {width: 0, x: 0, y: 0}
},
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//
prepareForDraw: {
value: function() {
//
}
},
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//
willDraw: {
value: function() {
//Getting component views from layout
this._trackData.width = parseInt(getComputedStyle(this.trackChips).getPropertyCSSValue('width').cssText);
//TODO: Fix events and remove this hack
this.trackCover.addEventListener('mouseover', function () {
if (!this._updating) {
this.trackCover.style.display = 'none';
}
}.bind(this), true);
//
this.radioLinear.addEventListener('change', function (e){
this.mode = 'linear';
}.bind(this), true);
//
this.radioRadial.addEventListener('change', function (e){
this.mode = 'radial';
}.bind(this), true);
}
},
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//
draw: {
value: function() {
//Checking for mode to assign radio value
if (this.mode === 'linear') {
this.radioLinear.checked = 'true';
} else if (this.mode === 'radial') {
this.radioRadial.checked = 'true';
}
//Checkign for value to initialize stops
if (!this.value) {
this.addDefaultStops();
} else {
//Adding stops from preset value
for (var i=0, stops = this.value; stops[i]; i++) {
this.addStop({color: {mode: stops[i].mode, value: stops[i].value}, percent:stops[i].position}, true);
}
}
}
},
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//
didDraw: {
value: function() {
//Adding event listener for stops
this.trackMain.addEventListener('click', this, false);
//Getting position of track
var point = webkitConvertPointFromNodeToPage(this.trackMain, new WebKitPoint(0, 0));
//Setting position of track to calculate movement
this._trackData.x = point.x;
this._trackData.y = point.y;
}
},
////////////////////////////////////////////////////////////////////
//Default stops funtion (reset)
addDefaultStops: {
value: function() {
this.addStop({color: {mode: 'rgb', value: {r: 255, g: 255, b: 255, a: 1, css: 'rgb(255, 255, 255)'}}, percent: 0}, true);
this.addStop({color: {mode: 'rgb', value: {r: 0, g: 0, b: 0, a: 1, css: 'rgb(0, 0, 0)'}}, percent: 100}, true);
}
},
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//
addStop: {
value: function(data, silent) {
if (this.application.ninja.colorController.colorPopupManager) {
//Hiding any open popups (of gradient buttons)
this.application.ninja.colorController.colorPopupManager.hideGradientChipPopup();
//Creating stop elements
var stop = document.createElement('div'),
holder = document.createElement('div'),
tooltip = document.createElement('span'),
button = document.createElement('button');
//Setting up elements
stop.appendChild(tooltip);
stop.appendChild(holder);
holder.appendChild(button);
//Adding events to the stops
stop.addEventListener('mousedown', this, false);
stop.addEventListener('mouseup', this, false);
//Storing refereces to buttons and actual stop container
button.stop = stop;
tooltip.stop = stop;
holder.stop = stop;
stop.button = button;
//Adding stop to container
this.trackChips.appendChild(stop);
//Checking for bounds to add stop
if (data.percent >= 0 && data.percent <= 100) {
this.positionStop(stop, data.percent);
button.stopPosition = data.percent;
}
//Creating an instance of input chip
this.application.ninja.colorController.addButton('chip', button);
//Initialing button with color data
button.color(data.color.mode, data.color.value);
//Button popup data
button.props = {side: 'top', align: 'center', nocolor: false, wheel: true, palette: false, gradient: false, image: false, offset: -84, gradientPopup: true, history: false};
//Listening for color events from button
button.addEventListener('change', this, false);
//Dispatching event depending on type of mode
if (!silent) {
this._dispatchEvent('change', false);
} else {
this._dispatchEvent('change', true);
}
//
} else {
//Handle Error
}
}
},
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//
removeStop: {
value: function(stop) {
var i, buttons = this.trackChips.getElementsByTagName('button');
//
if (buttons.length > 2) {
//Removing stops
this.trackChips.removeChild(stop);
//Stopping events related to this current stop
this.removeStopMoving();
}
}
},
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//
removeStopMoving: {
value: function() {
this._updating = false;
this.trackCover.style.display = 'none';
this._dispatchEvent('change', false);
document.removeEventListener('mousemove', this, false);
document.removeEventListener('mouseup', this, false);
}
},
////////////////////////////////////////////////////////////////////
//
positionStop: {
value: function(stop, percent) {
try {
if (percent<0) {
percent = 0;
} else if (percent>100) {
percent = 100;
}
//
var adj = (parseInt(getComputedStyle(stop).getPropertyCSSValue('width').cssText)*percent/100)/this._trackData.width;
stop.style.left = Math.round(percent-Math.round(adj*100))+'%';
stop.button.stopPosition = percent;
} catch (e) {
//TEMP
}
}
},
////////////////////////////////////////////////////////////////////
//TODO: Add color detection canvas to get actual color
handleClick: {
value: function(e) {
//Logic to get color from canvas data would go here
var data = {};
data.mode = 'rgb';
data.value = {r: 100, g: 100, b: 100, a: 1, css: 'rgb(100, 100, 100)'};
//
this.addStop({color: data, percent: Math.round(100*(e._event.offsetX/e._event.target.offsetWidth))});
}
},
////////////////////////////////////////////////////////////////////
//
handleMouseup: {
value: function(e) {
this.removeStopMoving();
}
},
////////////////////////////////////////////////////////////////////
//
handleMousedown: {
value: function(e) {
//
var i, buttons = this.trackChips.getElementsByTagName('button');
this.currentStop = e._event.target.stop;
//Looping through other stops to swap depths
for (i=0; buttons[i]; i++) {
buttons[i].stop.style.zIndex = 1;
}
//Setting the depth of the current button to the highest
this.currentStop.style.zIndex = buttons.length+1;
//Adding events for actions while moving
document.addEventListener('mousemove', this, false);
document.addEventListener('mouseup', this, false);
}
},
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//
handleMousemove: {
value: function(e) {
//
this._updating = true;
//
this.application.ninja.colorController.colorPopupManager.hideGradientChipPopup();
//
if (e._event.y > this._trackData.y+70 || e._event.y < this._trackData.y) {
this.removeStop(this.currentStop);
}
//
if (this.currentStop.button.stopPosition !== Math.round((e._event.x-this._trackData.x)/this._trackData.width*100)) {
this.trackCover.style.display = 'block';
}
//
this.positionStop(this.currentStop, Math.round((e._event.x-this._trackData.x)/this._trackData.width*100));
}
},
////////////////////////////////////////////////////////////////////
//
handleChange: {
value: function(e) {
this.application.ninja.colorController.colorView.colorManager.input = this.application.ninja.colorController.colorView.previousInput;
this._dispatchEvent('change', false);
this.application.ninja.colorController.colorView.colorManager.input = 'chip';
}
},
////////////////////////////////////////////////////////////////////
//Dispatching custom event
_dispatchEvent: {
value: function(type, userInitiated) {
//
var actionEvent = document.createEvent("CustomEvent"), buttons = this.trackChips.getElementsByTagName('button'), stops = [], css, previewCss = '-webkit-gradient(linear, left top, right top';
//Preventing an events of less than 2 stops since there'll be a reset
if (buttons.length < 2) {
return;
}
//Initializing CSS string
if (this.mode === 'radial') {
css = '-webkit-radial-gradient(center, ellipse cover';
} else {
css = '-webkit-gradient(linear, left top, right top';
}
//Creating stops array
for (var i=0; i < buttons.length; i++) {
stops.push({value: buttons[i].colorValue, mode: buttons[i].colorMode, position: buttons[i].stopPosition});
}
//Sorting array (must be sorted for radial gradients, at least in Chrome
stops.sort(function(a,b){return a.position - b.position});
//Looping through stops in gradient to create CSS (actual and preview)
for (var i=0; i < stops.length; i++) {
//Addint to CSS String
if (this.mode === 'radial' && stops[i].value) {
css += ', '+stops[i].value.css+' '+stops[i].position+'% ';
//The CSS string for the preview bar is always linear
previewCss += ', color-stop('+stops[i].position+'%,'+stops[i].value.css+')';
} else if (stops[i].value){
css += ', color-stop('+stops[i].position+'%,'+stops[i].value.css+')';
//The CSS string for the preview bar is always linear
previewCss += ', color-stop('+stops[i].position+'%,'+stops[i].value.css+')';
} else {
//
}
}
//Closing the CSS strings
css += ')';
previewCss += ')';
//console.log(previewCss);
//Setting the preview track background
this.trackMain.style.background = previewCss;
//Storing the stops
this.value = stops;
//Initializing and storing data for event
actionEvent.initEvent(type, true, true);
actionEvent.type = type;
actionEvent.wasSetByCode = userInitiated;
actionEvent.gradient = {stops: this.value, mode: this.mode, gradientMode: this.mode, css: css};
this.dispatchEvent(actionEvent);
}
}
////////////////////////////////////////////////////////////////////
});