svgedit/editor/jgraduate/jquery.jgraduate.js

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/*
* jGraduate 0.3.x
*
* jQuery Plugin for a gradient picker
*
* Copyright (c) 2009 Jeff Schiller
* http://blog.codedread.com/
*
* Apache 2 License
jGraduate( options, okCallback, cancelCallback )
where options is an object literal:
{
window: { title: "Pick the start color and opacity for the gradient" },
images: { clientPath: "images/" },
paint: a Paint object
}
- the Paint object is:
Paint {
type: String, // one of "none", "solidColor", "linearGradient", "radialGradient"
alpha: Number representing opacity (0-100),
solidColor: String representing #RRGGBB hex of color,
linearGradient: object of interface SVGLinearGradientElement,
}
$.jGraduate.Paint() -> constructs a 'none' color
$.jGraduate.Paint({copy: o}) -> creates a copy of the paint o
$.jGraduate.Paint({hex: "#rrggbb"}) -> creates a solid color paint with hex = "#rrggbb"
$.jGraduate.Paint({linearGradient: o, a: 50}) -> creates a linear gradient paint with opacity=0.5
$.jGraduate.Paint({hex: "#rrggbb", linearGradient: o}) -> throws an exception?
- picker accepts the following object as input:
{
okCallback: function to call when Ok is pressed
cancelCallback: function to call when Cancel is pressed
paint: object describing the paint to display initially, if not set, then default to opaque white
}
- okCallback receives a Paint object
*
*/
var ns = { svg: 'http://www.w3.org/2000/svg', xlink: 'http://www.w3.org/1999/xlink' };
if(!window.console) {
window.console = new function() {
this.log = function(str) {};
this.dir = function(str) {};
};
}
$.cloneNode = function(el) {
if(!window.opera) return el.cloneNode(true);
// manually create a copy of the element
opera.postError(ns.svg, el.nodeName);
var new_el = document.createElementNS(ns.svg, el.nodeName);
$.each(el.attributes, function(i, attr) {
new_el.setAttributeNS(ns.svg, attr.nodeName, attr.nodeValue);
});
$.each(el.childNodes, function(i, child) {
if(child.nodeType == 1) {
new_el.appendChild($.cloneNode(child));
}
});
return new_el;
}
$.jGraduate = {
Paint:
function(opt) {
var options = opt || {};
this.alpha = options.alpha || 100;
// copy paint object
if (options.copy) {
this.type = options.copy.type;
this.alpha = options.copy.alpha;
switch(this.type) {
case "none":
this.solidColor = null;
this.linearGradient = null;
break;
case "solidColor":
this.solidColor = options.copy.solidColor;
this.linearGradient = null;
break;
case "linearGradient":
this.solidColor = null;
this.linearGradient = $.cloneNode(options.copy.linearGradient);
break;
}
}
// create linear gradient paint
else if (options.linearGradient) {
this.type = "linearGradient";
this.solidColor = null;
this.linearGradient = $.cloneNode(options.linearGradient);
}
// create solid color paint
else if (options.solidColor) {
this.type = "solidColor";
this.solidColor = options.solidColor;
}
// create empty paint
else {
this.type = "none";
this.solidColor = null;
this.linearGradient = null;
}
}
};
jQuery.fn.jGraduateDefaults = {
paint: new $.jGraduate.Paint(),
window: {
pickerTitle: "Drag markers to pick a paint",
},
images: {
clientPath: "images/",
},
};
jQuery.fn.jGraduate =
function(options) {
var $arguments = arguments;
return this.each( function() {
var $this = $(this), $settings = $.extend(true, {}, jQuery.fn.jGraduateDefaults, options),
id = $this.attr('id'),
idref = '#'+$this.attr('id')+' ';
if (!idref)
{
alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
return;
}
var okClicked = function() {
$.isFunction($this.okCallback) && $this.okCallback($this.paint);
$this.hide();
},
cancelClicked = function() {
$.isFunction($this.cancelCallback) && $this.cancelCallback();
$this.hide();
};
$.extend(true, $this, // public properties, methods, and callbacks
{
// make a copy of the incoming paint
paint: new $.jGraduate.Paint({copy: $settings.paint}),
okCallback: $.isFunction($arguments[1]) && $arguments[1] || null,
cancelCallback: $.isFunction($arguments[2]) && $arguments[2] || null,
});
var pos = $this.position(),
color = null;
if ($this.paint.type == "none") {
$this.paint = $.jGraduate.Paint({solidColor: 'ffffff'});
}
$this.addClass('jGraduate_Picker');
$this.html('<ul class="jGraduate_tabs">' +
'<li class="jGraduate_tab_color jGraduate_tab_current">Solid Color</li>' +
'<li class="jGraduate_tab_lingrad">Linear Gradient</li>' +
'</ul>' +
'<div class="jGraduate_colPick"></div>' +
'<div class="jGraduate_lgPick"></div>');
var colPicker = $(idref + '> .jGraduate_colPick');
var lgPicker = $(idref + '> .jGraduate_lgPick');
lgPicker.html(
'<div id="' + id + '_jGraduate_Swatch" class="jGraduate_Swatch">' +
'<h2 class="jGraduate_Title">' + $settings.window.pickerTitle + '</h2>' +
'<div id="' + id + '_jGraduate_GradContainer" class="jGraduate_GradContainer"></div>' +
'<div id="' + id + '_jGraduate_Opacity" class="jGraduate_Opacity" title="Click to set overall opacity of the gradient paint">' +
'<img id="' + id + '_jGraduate_AlphaArrows" class="jGraduate_AlphaArrows" src="' + $settings.images.clientPath + 'rangearrows2.gif"></img>' +
'</div>' +
'</div>' +
'<div class="jGraduate_Form">' +
'<div class="jGraduate_StopSection">' +
'<label class="jGraduate_Form_Heading">Begin Stop</label>' +
'<div class="jGraduate_Form_Section">' +
'<label>x:</label>' +
'<input type="text" id="' + id + '_jGraduate_x1" size="3" title="Enter starting x value between 0.0 and 1.0"/>' +
'<label> y:</label>' +
'<input type="text" id="' + id + '_jGraduate_y1" size="3" title="Enter starting y value between 0.0 and 1.0"/>' +
'<div id="' + id + '_jGraduate_colorBoxBegin" class="colorBox"></div>' +
'<label id="' + id + '_jGraduate_beginOpacity"> 100%</label>' +
'</div>' +
'</div>' +
'<div class="jGraduate_StopSection">' +
'<label class="jGraduate_Form_Heading">End Stop</label>' +
'<div class="jGraduate_Form_Section">' +
'<label>x:</label>' +
'<input type="text" id="' + id + '_jGraduate_x2" size="3" title="Enter ending x value between 0.0 and 1.0"/>' +
'<label> y:</label>' +
'<input type="text" id="' + id + '_jGraduate_y2" size="3" title="Enter ending y value between 0.0 and 1.0"/>' +
'<div id="' + id + '_jGraduate_colorBoxEnd" class="colorBox"></div>' +
'<label id="' + id + '_jGraduate_endOpacity">100%</label>' +
'</div>' +
'</div>' +
'<div class="jGraduate_OpacityField">' +
'<label class="jGraduate_OpacityLabel">A: </label>' +
'<input type="text" id="' + id + '_jGraduate_OpacityInput" class="jGraduate_OpacityInput" size="3" value="100"/>%' +
'</div>' +
'</div>' +
'<div class="jGraduate_OkCancel">' +
'<input type="button" id="' + id + '_jGraduate_Ok" class="jGraduate_Ok" value="OK"/>' +
'<input type="button" id="' + id + '_jGraduate_Cancel" class="jGraduate_Cancel" value="Cancel"/>' +
'</div>' +
'<div class="jGraduate_LightBox"></div>' +
'<div id="' + id + '_jGraduate_stopPicker" class="jGraduate_stopPicker"></div>');
// --------------
// Set up all the SVG elements (the gradient, stops and rectangle)
var MAX = 256, MARGINX = 0, MARGINY = 0, STOP_RADIUS = 15/2,
SIZEX = MAX - 2*MARGINX, SIZEY = MAX - 2*MARGINY;
var container = document.getElementById(id+'_jGraduate_GradContainer');
var svg = container.appendChild(document.createElementNS(ns.svg, 'svg'));
svg.id = id+'_jgraduate_svg';
svg.setAttribute('width', MAX);
svg.setAttribute('height', MAX);
svg.setAttribute("xmlns", ns.svg);
// if we are sent a gradient, import it
if ($this.paint.type == "linearGradient") {
$this.paint.linearGradient.id = id+'_jgraduate_grad';
$this.paint.linearGradient = svg.appendChild($.cloneNode($this.paint.linearGradient));
}
else { // we create a gradient
var grad = svg.appendChild(document.createElementNS(ns.svg, 'linearGradient'));
grad.id = id+'_jgraduate_grad';
grad.setAttribute('x1','0.0');
grad.setAttribute('y1','0.0');
grad.setAttribute('x2','1.0');
grad.setAttribute('y2','1.0');
var begin = grad.appendChild(document.createElementNS(ns.svg, 'stop'));
begin.setAttribute('offset', '0.0');
begin.setAttribute('stop-color', '#ff0000');
var end = grad.appendChild(document.createElementNS(ns.svg, 'stop'));
end.setAttribute('offset', '1.0');
end.setAttribute('stop-color', '#ffff00');
$this.paint.linearGradient = grad;
}
var gradalpha = $this.paint.alpha;
$('#' + id + '_jGraduate_OpacityInput').val(gradalpha);
var posx = parseInt(255*(gradalpha/100)) - 4.5;
$('#' + id + '_jGraduate_AlphaArrows').css({'margin-left':posx});
$('#' + id + '_jgraduate_rect').attr('fill-opacity', gradalpha/100);
var x1 = parseFloat($this.paint.linearGradient.getAttribute('x1')||0.0),
y1 = parseFloat($this.paint.linearGradient.getAttribute('y1')||0.0),
x2 = parseFloat($this.paint.linearGradient.getAttribute('x2')||1.0),
y2 = parseFloat($this.paint.linearGradient.getAttribute('y2')||0.0);
var rect = document.createElementNS(ns.svg, 'rect');
rect.id = id + '_jgraduate_rect';
rect.setAttribute('x', MARGINX);
rect.setAttribute('y', MARGINY);
rect.setAttribute('width', SIZEY);
rect.setAttribute('height', SIZEY);
rect.setAttribute('fill', 'url(#'+id+'_jgraduate_grad)');
rect.setAttribute('fill-opacity', '1.0');
rect = svg.appendChild(rect);
// stop visuals created here
var beginStop = document.createElementNS(ns.svg, 'image');
beginStop.id = id + "_stop1";
beginStop.setAttribute('class', 'stop');
beginStop.setAttributeNS(ns.xlink, 'href', $settings.images.clientPath + 'mappoint.gif');
beginStop.setAttributeNS(ns.xlink, "title", "Begin Stop");
beginStop.appendChild(document.createElementNS(ns.svg, 'title')).appendChild(
document.createTextNode("Begin Stop"));
beginStop.setAttribute('width', 18);
beginStop.setAttribute('height', 18);
beginStop.setAttribute('x', MARGINX + SIZEX*x1 - STOP_RADIUS);
beginStop.setAttribute('y', MARGINY + SIZEY*y1 - STOP_RADIUS);
beginStop.setAttribute('cursor', 'move');
// must append only after setting all attributes due to Webkit Bug 27952
// https://bugs.webkit.org/show_bug.cgi?id=27592
beginStop = svg.appendChild(beginStop);
var endStop = document.createElementNS(ns.svg, 'image');
endStop.id = id + "_stop2";
endStop.setAttribute('class', 'stop');
endStop.setAttributeNS(ns.xlink, 'href', $settings.images.clientPath + 'mappoint.gif');
endStop.setAttributeNS(ns.xlink, "title", "End Stop");
endStop.appendChild(document.createElementNS(ns.svg, 'title')).appendChild(
document.createTextNode("End Stop"));
endStop.setAttribute('width', 18);
endStop.setAttribute('height', 18);
endStop.setAttribute('x', MARGINX + SIZEX*x2 - STOP_RADIUS);
endStop.setAttribute('y', MARGINY + SIZEY*y2 - STOP_RADIUS);
endStop.setAttribute('cursor', 'move');
endStop = svg.appendChild(endStop);
// bind GUI elements
$('#'+id+'_jGraduate_Ok').bind('click', function() {
$this.paint.type = "linearGradient";
$this.paint.solidColor = null;
okClicked();
});
$('#'+id+'_jGraduate_Cancel').bind('click', function(paint) {
cancelClicked();
});
var x1 = $this.paint.linearGradient.getAttribute('x1');
if(!x1) x1 = "0.0";
x1Input = $('#'+id+'_jGraduate_x1');
x1Input.val(x1);
x1Input.change( function() {
if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
this.value = 0.0;
}
$this.paint.linearGradient.setAttribute('x1', this.value);
beginStop.setAttribute('x', MARGINX + SIZEX*this.value - STOP_RADIUS);
});
var y1 = $this.paint.linearGradient.getAttribute('y1');
if(!y1) y1 = "0.0";
y1Input = $('#'+id+'_jGraduate_y1');
y1Input.val(y1);
y1Input.change( function() {
if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
this.value = 0.0;
}
$this.paint.linearGradient.setAttribute('y1', this.value);
beginStop.setAttribute('y', MARGINY + SIZEY*this.value - STOP_RADIUS);
});
var x2 = $this.paint.linearGradient.getAttribute('x2');
if(!x2) x2 = "1.0";
x2Input = $('#'+id+'_jGraduate_x2');
x2Input.val(x2);
x2Input.change( function() {
if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
this.value = 1.0;
}
$this.paint.linearGradient.setAttribute('x2', this.value);
endStop.setAttribute('x', MARGINX + SIZEX*this.value - STOP_RADIUS);
});
var y2 = $this.paint.linearGradient.getAttribute('y2');
if(!y2) y2 = "0.0";
y2Input = $('#'+id+'_jGraduate_y2');
y2Input.val(y2);
y2Input.change( function() {
if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
this.value = 0.0;
}
$this.paint.linearGradient.setAttribute('y2', this.value);
endStop.setAttribute('y', MARGINY + SIZEY*this.value - STOP_RADIUS);
});
var stops = $this.paint.linearGradient.getElementsByTagNameNS(ns.svg, 'stop');
var numstops = stops.length;
// if there are not at least two stops, then
if (numstops < 2) {
while (numstops < 2) {
$this.paint.linearGradient.appendChild( document.createElementNS(ns.svg, 'stop') );
++numstops;
}
stops = $this.paint.linearGradient.getElementsByTagNameNS(ns.svg, 'stop');
}
var setOpacitySlider = function(e, div) {
var offset = div.offset();
var x = (e.pageX - offset.left - parseInt(div.css('border-left-width')));
if (x > 255) x = 255;
if (x < 0) x = 0;
var posx = x - 4.5;
x /= 255;
$('#' + id + '_jGraduate_AlphaArrows').css({'margin-left':posx});
$('#' + id + '_jgraduate_rect').attr('fill-opacity', x);
x = parseInt(x*100);
$('#' + id + '_jGraduate_OpacityInput').val(x);
$this.paint.alpha = x;
};
// handle dragging on the opacity slider
var bSlidingOpacity = false;
$('.jGraduate_Opacity').mousedown(function(evt) {
setOpacitySlider(evt, $(this));
bSlidingOpacity = true;
evt.preventDefault();
});
$('.jGraduate_Opacity').mousemove(function(evt) {
if (bSlidingOpacity) {
setOpacitySlider(evt, $(this));
evt.preventDefault();
}
});
$('.jGraduate_Opacity').mouseup(function(evt) {
setOpacitySlider(evt, $(this));
bSlidingOpacity = false;
evt.preventDefault();
});
// handle dragging the stop around the swatch
var draggingStop = null;
var startx = -1, starty = -1;
// for whatever reason, Opera does not allow $('image.stop') here,
// and Firefox 1.5 does not allow $('.stop')
$('.stop, #color_picker_jGraduate_GradContainer image').mousedown(function(evt) {
draggingStop = this;
startx = evt.clientX;
starty = evt.clientY;
evt.preventDefault();
});
$('#'+id+'_jgraduate_svg').mousemove(function(evt) {
if (null != draggingStop) {
var dx = evt.clientX - startx;
var dy = evt.clientY - starty;
startx += dx;
starty += dy;
var x = parseFloat(draggingStop.getAttribute('x')) + dx;
var y = parseFloat(draggingStop.getAttribute('y')) + dy;
// clamp stop to the swatch
if (x < MARGINX - STOP_RADIUS) x = MARGINX - STOP_RADIUS;
if (y < MARGINY - STOP_RADIUS) y = MARGINY - STOP_RADIUS;
if (x > MARGINX + SIZEX - STOP_RADIUS) x = MARGINX + SIZEX - STOP_RADIUS;
if (y > MARGINY + SIZEY - STOP_RADIUS) y = MARGINY + SIZEY - STOP_RADIUS;
draggingStop.setAttribute('x', x);
draggingStop.setAttribute('y', y);
// calculate stop offset
var fracx = (x - MARGINX + STOP_RADIUS)/SIZEX;
var fracy = (y - MARGINY + STOP_RADIUS)/SIZEY;
if (draggingStop.id == (id+'_stop1')) {
x1Input.val(fracx);
y1Input.val(fracy);
$this.paint.linearGradient.setAttribute('x1', fracx);
$this.paint.linearGradient.setAttribute('y1', fracy);
}
else {
x2Input.val(fracx);
y2Input.val(fracy);
$this.paint.linearGradient.setAttribute('x2', fracx);
$this.paint.linearGradient.setAttribute('y2', fracy);
}
evt.preventDefault();
}
});
$('#'+id+'_jgraduate_svg').mouseup(function(evt) {
draggingStop = null;
});
var beginColor = stops[0].getAttribute('stop-color');
if(!beginColor) beginColor = '#000';
beginColorBox = $('#'+id+'_jGraduate_colorBoxBegin');
beginColorBox.css({'background-color':beginColor});
var beginOpacity = stops[0].getAttribute('stop-opacity');
if(!beginOpacity) beginOpacity = '1.0';
$('#'+id+'jGraduate_beginOpacity').html( (beginOpacity*100)+'%' );
var endColor = stops[stops.length-1].getAttribute('stop-color');
if(!endColor) endColor = '#000';
endColorBox = $('#'+id+'_jGraduate_colorBoxEnd');
endColorBox.css({'background-color':endColor});
var endOpacity = stops[stops.length-1].getAttribute('stop-opacity');
if(!endOpacity) endOpacity = '1.0';
$('#'+id+'jGraduate_endOpacity').html( (endOpacity*100)+'%' );
$('#'+id+'_jGraduate_colorBoxBegin').click(function() {
$('div.jGraduate_LightBox').show();
var colorbox = $(this);
var thisAlpha = (parseFloat(beginOpacity)*255).toString(16);
while (thisAlpha.length < 2) { thisAlpha = "0" + thisAlpha; }
color = beginColor.substr(1) + thisAlpha;
$('#'+id+'_jGraduate_stopPicker').css({'left': 100, 'bottom': 15}).jPicker({
window: { title: "Pick the start color and opacity for the gradient" },
images: { clientPath: $settings.images.clientPath },
color: { active: color, alphaSupport: true }
}, function(color){
beginColor = color.get_Hex() ? ('#'+color.get_Hex()) : "none";
beginOpacity = color.get_A() ? color.get_A()/100 : 1;
colorbox.css('background', beginColor);
$('#'+id+'_jGraduate_beginOpacity').html(parseInt(beginOpacity*100)+'%');
stops[0].setAttribute('stop-color', beginColor);
stops[0].setAttribute('stop-opacity', beginOpacity);
$('div.jGraduate_LightBox').hide();
$('#'+id+'_jGraduate_stopPicker').hide();
}, null, function() {
$('div.jGraduate_LightBox').hide();
$('#'+id+'_jGraduate_stopPicker').hide();
});
});
$('#'+id+'_jGraduate_colorBoxEnd').click(function() {
$('div.jGraduate_LightBox').show();
var colorbox = $(this);
var thisAlpha = (parseFloat(endOpacity)*255).toString(16);
while (thisAlpha.length < 2) { thisAlpha = "0" + thisAlpha; }
color = endColor.substr(1) + thisAlpha;
$('#'+id+'_jGraduate_stopPicker').css({'left': 100, 'top': 15}).jPicker({
window: { title: "Pick the end color and opacity for the gradient" },
images: { clientPath: $settings.images.clientPath },
color: { active: color, alphaSupport: true }
}, function(color){
endColor = color.get_Hex() ? ('#'+color.get_Hex()) : "none";
endOpacity = color.get_A() ? color.get_A()/100 : 1;
colorbox.css('background', endColor);
$('#'+id+'_jGraduate_endOpacity').html(parseInt(endOpacity*100)+'%');
stops[1].setAttribute('stop-color', endColor);
stops[1].setAttribute('stop-opacity', endOpacity);
$('div.jGraduate_LightBox').hide();
$('#'+id+'_jGraduate_stopPicker').hide();
}, null, function() {
$('div.jGraduate_LightBox').hide();
$('#'+id+'_jGraduate_stopPicker').hide();
});
});
// --------------
var thisAlpha = ($this.paint.alpha*255/100).toString(16);
while (thisAlpha.length < 2) { thisAlpha = "0" + thisAlpha; }
color = $this.paint.solidColor == "none" ? "" : $this.paint.solidColor + thisAlpha;
colPicker.jPicker(
{
window: { title: $settings.window.pickerTitle },
images: { clientPath: $settings.images.clientPath },
color: { active: color, alphaSupport: true }
},
function(color) {
$this.paint.type = "solidColor";
$this.paint.alpha = color.get_A() ? color.get_A() : 100;
$this.paint.solidColor = color.get_Hex() ? color.get_Hex() : "none";
$this.paint.linearGradient = null;
okClicked();
},
null,
function(){ cancelClicked(); }
);
$(idref + ' .jGraduate_tab_color').click( function(){
$(idref + ' .jGraduate_tab_lingrad').removeClass('jGraduate_tab_current');
$(idref + ' .jGraduate_tab_color').addClass('jGraduate_tab_current');
lgPicker.hide();
colPicker.show();
});
$(idref + ' .jGraduate_tab_lingrad').click( function(){
$(idref + ' .jGraduate_tab_color').removeClass('jGraduate_tab_current');
$(idref + ' .jGraduate_tab_lingrad').addClass('jGraduate_tab_current');
colPicker.hide();
lgPicker.show();
});
if ($this.paint.type == "linearGradient") {
lgPicker.show();
colPicker.hide();
$(idref + ' .jGraduate_tab_color').removeClass('jGraduate_tab_current');
$(idref + ' .jGraduate_tab_lingrad').addClass('jGraduate_tab_current');
}
else {
colPicker.show();
lgPicker.hide();
$(idref + ' .jGraduate_tab_color').addClass('jGraduate_tab_current');
$(idref + ' .jGraduate_tab_lingrad').removeClass('jGraduate_tab_current');
}
$this.show();
});
};