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add touchscreen support (for e.g. ipad) #30

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add touchscreen support (for e.g. ipad) #30

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16 changes: 12 additions & 4 deletions src/slider.js
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Expand Up @@ -77,21 +77,29 @@ Control.Slider = Class.create({
slider.options.sliderValue[i] : slider.options.sliderValue) || slider.options.sliderValue[i] : slider.options.sliderValue) ||
slider.range.start), i); slider.range.start), i);
h.makePositioned().observe("mousedown", slider.eventMouseDown); h.makePositioned().observe("mousedown", slider.eventMouseDown);
h.observe("touchstart", slider.eventMouseDown);
}); });


this.track.observe("mousedown", this.eventMouseDown); this.track.observe("mousedown", this.eventMouseDown);
this.track.observe("touchstart", this.eventMouseDown);
document.observe("mouseup", this.eventMouseUp); document.observe("mouseup", this.eventMouseUp);
document.observe("touchend", this.eventMouseUp);
document.observe("mousemove", this.eventMouseMove); document.observe("mousemove", this.eventMouseMove);
document.observe("touchmove", this.eventMouseMove);


this.initialized = true; this.initialized = true;
}, },
dispose: function() { dispose: function() {
var slider = this; var slider = this;
Event.stopObserving(this.track, "mousedown", this.eventMouseDown); Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
Event.stopObserving(this.track, "touchstart", this.eventMouseDown);
Event.stopObserving(document, "mouseup", this.eventMouseUp); Event.stopObserving(document, "mouseup", this.eventMouseUp);
Event.stopObserving(document, "touchend", this.eventMouseUp);
Event.stopObserving(document, "mousemove", this.eventMouseMove); Event.stopObserving(document, "mousemove", this.eventMouseMove);
Event.stopObserving(document, "touchmove", this.eventMouseMove);
this.handles.each( function(h) { this.handles.each( function(h) {
Event.stopObserving(h, "mousedown", slider.eventMouseDown); Event.stopObserving(h, "mousedown", slider.eventMouseDown);
Event.stopObserving(h, "touchstart", slider.eventMouseDown);
}); });
}, },
setDisabled: function(){ setDisabled: function(){
Expand Down Expand Up @@ -199,12 +207,12 @@ Control.Slider = Class.create({
Element.addClassName(this.activeHandle, 'selected'); Element.addClassName(this.activeHandle, 'selected');
}, },
startDrag: function(event) { startDrag: function(event) {
if (Event.isLeftClick(event)) { if (Event.isLeftClick(event) || event.touches) {
if (!this.disabled){ if (!this.disabled){
this.active = true; this.active = true;


var handle = Event.element(event); var handle = Event.element(event);
var pointer = [Event.pointerX(event), Event.pointerY(event)]; var pointer = (event.touches ? [event.touches[0].clientX, event.touches[0].clientY] : [Event.pointerX(event), Event.pointerY(event)]);
var track = handle; var track = handle;
if (track==this.track) { if (track==this.track) {
var offsets = this.track.cumulativeOffset(); var offsets = this.track.cumulativeOffset();
Expand Down Expand Up @@ -238,12 +246,12 @@ Control.Slider = Class.create({
if (this.active) { if (this.active) {
if (!this.dragging) this.dragging = true; if (!this.dragging) this.dragging = true;
this.draw(event); this.draw(event);
if (Prototype.Browser.WebKit) window.scrollBy(0,0); if (Prototype.Browser.WebKit && !event.touches) window.scrollBy(0,0);
Event.stop(event); Event.stop(event);
} }
}, },
draw: function(event) { draw: function(event) {
var pointer = [Event.pointerX(event), Event.pointerY(event)]; var pointer = (event.touches ? [event.touches[0].clientX, event.touches[0].clientY] : [Event.pointerX(event), Event.pointerY(event)]);
var offsets = this.track.cumulativeOffset(); var offsets = this.track.cumulativeOffset();
pointer[0] -= this.offsetX + offsets[0]; pointer[0] -= this.offsetX + offsets[0];
pointer[1] -= this.offsetY + offsets[1]; pointer[1] -= this.offsetY + offsets[1];
Expand Down