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sources/apps/files_svgedit/svg-edit/spinbtn/JQuerySpinBtn.js
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/* SpinButton control
*
* Adds bells and whistles to any ordinary textbox to
* make it look and feel like a SpinButton Control.
*
* Originally written by George Adamson, Software Unity (george.jquery@softwareunity.com) August 2006.
* - Added min/max options
* - Added step size option
* - Added bigStep (page up/down) option
*
* Modifications made by Mark Gibson, (mgibson@designlinks.net) September 2006:
* - Converted to jQuery plugin
* - Allow limited or unlimited min/max values
* - Allow custom class names, and add class to input element
* - Removed global vars
* - Reset (to original or through config) when invalid value entered
* - Repeat whilst holding mouse button down (with initial pause, like keyboard repeat)
* - Support mouse wheel in Firefox
* - Fix double click in IE
* - Refactored some code and renamed some vars
*
* Modifications by Jeff Schiller, June 2009:
* - provide callback function for when the value changes based on the following
* http://www.mail-archive.com/jquery-en@googlegroups.com/msg36070.html
* Modifications by Jeff Schiller, July 2009:
* - improve styling for widget in Opera
* - consistent key-repeat handling cross-browser
* Modifications by Alexis Deveria, October 2009:
* - provide "stepfunc" callback option to allow custom function to run when changing a value
* - Made adjustValue(0) only run on certain keyup events, not all.
*
* Tested in IE6, Opera9, Firefox 1.5
* v1.0 11 Aug 2006 - George Adamson - First release
* v1.1 Aug 2006 - George Adamson - Minor enhancements
* v1.2 27 Sep 2006 - Mark Gibson - Major enhancements
* v1.3a 28 Sep 2006 - George Adamson - Minor enhancements
* v1.4 18 Jun 2009 - Jeff Schiller - Added callback function
* v1.5 06 Jul 2009 - Jeff Schiller - Fixes for Opera.
* v1.6 13 Oct 2009 - Alexis Deveria - Added stepfunc function
* v1.7 21 Oct 2009 - Alexis Deveria - Minor fixes
* Fast-repeat for keys and live updating as you type.
* v1.8 12 Jan 2010 - Benjamin Thomas - Fixes for mouseout behavior.
* Added smallStep
Sample usage:
// Create group of settings to initialise spinbutton(s). (Optional)
var myOptions = {
min: 0, // Set lower limit.
max: 100, // Set upper limit.
step: 1, // Set increment size.
smallStep: 0.5, // Set shift-click increment size.
spinClass: mySpinBtnClass, // CSS class to style the spinbutton. (Class also specifies url of the up/down button image.)
upClass: mySpinUpClass, // CSS class for style when mouse over up button.
downClass: mySpinDnClass // CSS class for style when mouse over down button.
}
$(document).ready(function(){
// Initialise INPUT element(s) as SpinButtons: (passing options if desired)
$("#myInputElement").SpinButton(myOptions);
});
*/
$.fn.SpinButton = function(cfg){
return this.each(function(){
this.repeating = false;
// Apply specified options or defaults:
// (Ought to refactor this some day to use $.extend() instead)
this.spinCfg = {
//min: cfg && cfg.min ? Number(cfg.min) : null,
//max: cfg && cfg.max ? Number(cfg.max) : null,
min: cfg && !isNaN(parseFloat(cfg.min)) ? Number(cfg.min) : null, // Fixes bug with min:0
max: cfg && !isNaN(parseFloat(cfg.max)) ? Number(cfg.max) : null,
step: cfg && cfg.step ? Number(cfg.step) : 1,
stepfunc: cfg && cfg.stepfunc ? cfg.stepfunc : false,
page: cfg && cfg.page ? Number(cfg.page) : 10,
upClass: cfg && cfg.upClass ? cfg.upClass : 'up',
downClass: cfg && cfg.downClass ? cfg.downClass : 'down',
reset: cfg && cfg.reset ? cfg.reset : this.value,
delay: cfg && cfg.delay ? Number(cfg.delay) : 500,
interval: cfg && cfg.interval ? Number(cfg.interval) : 100,
_btn_width: 20,
_direction: null,
_delay: null,
_repeat: null,
callback: cfg && cfg.callback ? cfg.callback : null
};
// if a smallStep isn't supplied, use half the regular step
this.spinCfg.smallStep = cfg && cfg.smallStep ? cfg.smallStep : this.spinCfg.step/2;
this.adjustValue = function(i){
var v;
if(isNaN(this.value)) {
v = this.spinCfg.reset;
} else if($.isFunction(this.spinCfg.stepfunc)) {
v = this.spinCfg.stepfunc(this, i);
} else {
// weirdest javascript bug ever: 5.1 + 0.1 = 5.199999999
v = Number((Number(this.value) + Number(i)).toFixed(5));
}
if (this.spinCfg.min !== null) v = Math.max(v, this.spinCfg.min);
if (this.spinCfg.max !== null) v = Math.min(v, this.spinCfg.max);
this.value = v;
if ($.isFunction(this.spinCfg.callback)) this.spinCfg.callback(this);
};
$(this)
.addClass(cfg && cfg.spinClass ? cfg.spinClass : 'spin-button')
.mousemove(function(e){
// Determine which button mouse is over, or not (spin direction):
var x = e.pageX || e.x;
var y = e.pageY || e.y;
var el = e.target || e.srcElement;
var scale = svgEditor.tool_scale || 1;
var height = $(el).height()/2;
var direction =
(x > coord(el,'offsetLeft') + el.offsetWidth*scale - this.spinCfg._btn_width)
? ((y < coord(el,'offsetTop') + height*scale) ? 1 : -1) : 0;
if (direction !== this.spinCfg._direction) {
// Style up/down buttons:
switch(direction){
case 1: // Up arrow:
$(this).removeClass(this.spinCfg.downClass).addClass(this.spinCfg.upClass);
break;
case -1: // Down arrow:
$(this).removeClass(this.spinCfg.upClass).addClass(this.spinCfg.downClass);
break;
default: // Mouse is elsewhere in the textbox
$(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);
}
// Set spin direction:
this.spinCfg._direction = direction;
}
})
.mouseout(function(){
// Reset up/down buttons to their normal appearance when mouse moves away:
$(this).removeClass(this.spinCfg.upClass).removeClass(this.spinCfg.downClass);
this.spinCfg._direction = null;
window.clearInterval(this.spinCfg._repeat);
window.clearTimeout(this.spinCfg._delay);
})
.mousedown(function(e){
if ( e.button === 0 && this.spinCfg._direction != 0) {
// Respond to click on one of the buttons:
var self = this;
var stepSize = e.shiftKey ? self.spinCfg.smallStep : self.spinCfg.step
var adjust = function() {
self.adjustValue(self.spinCfg._direction * stepSize);
};
adjust();
// Initial delay before repeating adjustment
self.spinCfg._delay = window.setTimeout(function() {
adjust();
// Repeat adjust at regular intervals
self.spinCfg._repeat = window.setInterval(adjust, self.spinCfg.interval);
}, self.spinCfg.delay);
}
})
.mouseup(function(e){
// Cancel repeating adjustment
window.clearInterval(this.spinCfg._repeat);
window.clearTimeout(this.spinCfg._delay);
})
.dblclick(function(e) {
if ($.browser.msie)
this.adjustValue(this.spinCfg._direction * this.spinCfg.step);
})
.keydown(function(e){
// Respond to up/down arrow keys.
switch(e.keyCode){
case 38: this.adjustValue(this.spinCfg.step); break; // Up
case 40: this.adjustValue(-this.spinCfg.step); break; // Down
case 33: this.adjustValue(this.spinCfg.page); break; // PageUp
case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown
}
})
/*
http://unixpapa.com/js/key.html describes the current state-of-affairs for
key repeat events:
- Safari 3.1 changed their model so that keydown is reliably repeated going forward
- Firefox and Opera still only repeat the keypress event, not the keydown
*/
.keypress(function(e){
if (this.repeating) {
// Respond to up/down arrow keys.
switch(e.keyCode){
case 38: this.adjustValue(this.spinCfg.step); break; // Up
case 40: this.adjustValue(-this.spinCfg.step); break; // Down
case 33: this.adjustValue(this.spinCfg.page); break; // PageUp
case 34: this.adjustValue(-this.spinCfg.page); break; // PageDown
}
}
// we always ignore the first keypress event (use the keydown instead)
else {
this.repeating = true;
}
})
// clear the 'repeating' flag
.keyup(function(e) {
this.repeating = false;
switch(e.keyCode){
case 38: // Up
case 40: // Down
case 33: // PageUp
case 34: // PageDown
case 13: this.adjustValue(0); break; // Enter/Return
}
})
.bind("mousewheel", function(e){
// Respond to mouse wheel in IE. (It returns up/dn motion in multiples of 120)
if (e.wheelDelta >= 120)
this.adjustValue(this.spinCfg.step);
else if (e.wheelDelta <= -120)
this.adjustValue(-this.spinCfg.step);
e.preventDefault();
})
.change(function(e){
this.adjustValue(0);
});
if (this.addEventListener) {
// Respond to mouse wheel in Firefox
this.addEventListener('DOMMouseScroll', function(e) {
if (e.detail > 0)
this.adjustValue(-this.spinCfg.step);
else if (e.detail < 0)
this.adjustValue(this.spinCfg.step);
e.preventDefault();
}, false);
}
});
function coord(el,prop) {
var c = el[prop], b = document.body;
while ((el = el.offsetParent) && (el != b)) {
if (!$.browser.msie || (el.currentStyle.position != 'relative'))
c += el[prop];
}
return c;
}
};
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