261 lines
9.3 KiB
JavaScript
261 lines
9.3 KiB
JavaScript
// vim: et:ts=4:sw=4:sts=4:ft=javascript
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/*@
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Ox.Range <f:Ox.Element> Range Object
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() -> <f> Range Object
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(options) -> <f> Range Object
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(options, self) -> <f> Range Object
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options <o> Options object
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arrows <b> if true, show arrows
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arrowStep <n> step when clicking arrows
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arrowSymbols <a> arrow symbols, like ['minus', 'plus']
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max <n> maximum value
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min <n> minimum value
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orientation <s> 'horizontal' or 'vertical'
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step <n> step between values
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size <n> width or height, in px
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thumbSize <n> minimum width or height of thumb, in px
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thumbValue <b> if true, display value on thumb
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trackGradient <a> colors
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trackImages <s|[s]> one or multiple track background image URLs
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trackStep <n> 0 (scroll here) or step when clicking track
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value <n> initial value
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valueNames <a> value names to display on thumb
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self <o> shared private variable
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change <!> triggered on change of the range
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@*/
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Ox.Range = function(options, self) {
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self = self || {};
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var that = Ox.Element({}, self)
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.defaults({
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arrows: false,
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arrowStep: 1,
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arrowSymbols: ['left', 'right'],
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max: 100,
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min: 0,
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orientation: 'horizontal',
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step: 1,
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size: 128, // fixme: shouldn't this be width?
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thumbSize: 16,
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thumbValue: false,
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trackColors: [],
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trackImages: [],
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trackStep: 0,
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value: 0,
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valueNames: null,
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})
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.options(Ox.extend(options, {
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arrowStep: options.arrowStep ?
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options.arrowStep : options.step,
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trackImages: $.makeArray(options.trackImages || [])
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}))
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.addClass('OxRange')
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.css({
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width: self.options.size + 'px'
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});
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Ox.extend(self, {
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trackColors: self.options.trackColors.length,
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trackImages: self.options.trackImages.length,
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values: (self.options.max - self.options.min + self.options.step) /
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self.options.step
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});
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setSizes();
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if (self.options.arrows) {
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self.$arrows = [];
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Ox.range(0, 2).forEach(function(i) {
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self.$arrows[i] = Ox.Button({
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overlap: i == 0 ? 'right' : 'left',
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title: self.options.arrowSymbols[i],
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type: 'image'
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})
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.addClass('OxArrow')
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.bindEvent({
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mousedown: function(data) {
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clickArrow(data, i, true);
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},
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mouserepeat: function(data) {
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clickArrow(data, i, false);
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}
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})
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.appendTo(that.$element);
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});
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}
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self.$track = Ox.Element()
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.addClass('OxTrack')
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.css(Ox.extend({
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width: (self.trackSize - 2) + 'px'
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}, self.trackImages == 1 ? {
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background: 'rgb(0, 0, 0)'
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} : {}))
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.bindEvent({
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mousedown: clickTrack,
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drag: dragTrack
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})
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.appendTo(that.$element);
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self.trackColors && setTrackColors();
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if (self.trackImages) {
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self.$trackImages = $('<div>')
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.css({
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width: self.trackSize + 'px',
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marginRight: (-self.trackSize - 1) + 'px'
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})
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.appendTo(self.$track.$element);
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self.options.trackImages.forEach(function(v, i) {
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//Ox.print(self.trackImageWidths[i])
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$('<img>')
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.attr({
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src: v
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})
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.addClass(i == 0 ? 'OxFirstChild' : '')
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.addClass(i == self.trackImages - 1 ? 'OxLastChild' : '')
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.css({
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width: self.trackImageWidths[i] + 'px'
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})
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.mousedown(function(e) {
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e.preventDefault(); // prevent drag
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})
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.appendTo(self.$trackImages);
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//left += self.trackImageWidths[i];
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});
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}
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self.$thumb = Ox.Button({
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id: self.options.id + 'Thumb',
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title: self.options.thumbValue ? (self.options.valueNames ?
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self.options.valueNames[self.options.value] :
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self.options.value) : '',
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width: self.thumbSize
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})
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.addClass('OxThumb')
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/*
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.css({
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border: '1px solid rgb(255, 255, 255)',
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background: 'rgba(0, 0, 0, 0)'
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})
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*/
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.appendTo(self.$track);
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setThumb();
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function clickArrow(data, i, animate) {
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// fixme: shift doesn't work, see menu scrolling
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setValue(self.options.value + self.options.arrowStep * (i == 0 ? -1 : 1) * (data.shiftKey ? 2 : 1), animate);
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}
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function clickTrack(data) {
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// fixme: thumb ends up a bit too far on the right
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var isThumb = $(data.target).hasClass('OxThumb');
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self.drag = {
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left: self.$track.offset().left,
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offset: isThumb ? data.clientX - self.$thumb.offset().left - 8 /*self.thumbSize / 2*/ : 0
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};
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setValue(getVal(data.clientX - self.drag.left - self.drag.offset), !isThumb);
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}
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function dragTrack(data) {
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setValue(getVal(data.clientX - self.drag.left - self.drag.offset))
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}
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function getPx(val) {
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var pxPerVal = (self.trackSize - self.thumbSize) /
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(self.options.max - self.options.min);
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return Math.ceil((val - self.options.min) * pxPerVal);
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}
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/*
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function getTime(oldValue, newValue) {
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return self.animationTime * Math.abs(oldValue - newValue) / (self.options.max - self.options.min);
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}
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*/
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function getVal(px) {
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var px = self.trackSize / self.values >= 16 ? px : px - 8,
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valPerPx = (self.options.max - self.options.min) /
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(self.trackSize - self.thumbSize);
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return Ox.limit(self.options.min +
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Math.floor(px * valPerPx / self.options.step) * self.options.step,
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self.options.min, self.options.max);
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}
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function setSizes() {
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self.trackSize = self.options.size - self.options.arrows * 32;
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self.thumbSize = Math.max(self.trackSize / self.values, self.options.thumbSize);
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self.trackImageWidths = self.trackImages == 1 ? [self.trackSize - 16] :
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Ox.divideInt(self.trackSize - 2, self.trackImages);
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self.trackColorsStart = self.thumbSize / 2 / self.options.size;
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self.trackColorsStep = (self.options.size - self.thumbSize) /
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(self.trackColors - 1) / self.options.size;
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that.css({
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width: self.options.size + 'px'
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});
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self.$track && self.$track.css({
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width: (self.trackSize - 2) + 'px'
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});
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if (self.$thumb) {
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self.$thumb.options({
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width: self.thumbSize
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});
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setThumb();
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}
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}
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function setThumb(animate) {
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self.$thumb.stop().animate({
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marginLeft: (getPx(self.options.value) - 1) + 'px',
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//width: self.thumbSize + 'px'
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}, animate ? 200 : 0, function() {
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if (self.options.thumbValue) {
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self.$thumb.options({
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title: self.options.valueNames ?
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self.options.valueNames[self.options.value] :
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self.options.value
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});
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}
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});
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}
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function setTrackColors() {
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self.$track.css({
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backgroundImage: $.browser.mozilla ?
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('-moz-linear-gradient(left, ' +
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self.options.trackColors[0] + ' 0%, ' + self.options.trackColors.map(function(v, i) {
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return v + ' ' + ((self.trackColorsStart + self.trackColorsStep * i) * 100) + '%';
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}).join(', ') + ', ' + self.options.trackColors[self.trackColors - 1] + ' 100%)') :
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('-webkit-gradient(linear, left top, right top, color-stop(0, ' +
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self.options.trackColors[0] + '), ' + self.options.trackColors.map(function(v, i) {
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return 'color-stop(' + (self.trackColorsStart + self.trackColorsStep * i) + ', ' + v + ')';
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}).join(', ') + ', color-stop(1, ' + self.options.trackColors[self.trackColors - 1] + '))')
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});
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}
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function setValue(value, animate) {
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value = Ox.limit(value, self.options.min, self.options.max);
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if (value != self.options.value) {
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//time = getTime(self.options.value, value);
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self.options.value = value;
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setThumb(animate);
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that.triggerEvent('change', {
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value: value
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});
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}
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}
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self.setOption = function(key, value) {
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if (key == 'size') {
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setSizes();
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} else if (key == 'trackColors') {
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setTrackColors();
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} else if (key == 'value') {
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setThumb();
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}
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}
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return that;
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};
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