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| Viewing file: Select action/file-type: /*
* transform: A jQuery cssHooks adding cross-browser 2d transform capabilities to $.fn.css() and $.fn.animate()
*
* limitations:
* - requires jQuery 1.4.3+
* - Should you use the *translate* property, then your elements need to be absolutely positionned in a relatively positionned wrapper **or it will fail in IE678**.
* - transformOrigin is not accessible
*
* latest version and complete README available on Github:
* https://github.com/louisremi/jquery.transform.js
*
* Copyright 2011 @louis_remi
* Licensed under the MIT license.
*
* This saved you an hour of work?
* Send me music http://www.amazon.co.uk/wishlist/HNTU0468LQON
*
*/
(function( $ ) {
/*
* Feature tests and global variables
*/
var div = document.createElement('div'),
divStyle = div.style,
propertyName = 'transform',
suffix = 'Transform',
testProperties = [
'O' + suffix,
'ms' + suffix,
'Webkit' + suffix,
'Moz' + suffix,
// prefix-less property
propertyName
],
i = testProperties.length,
supportProperty,
supportMatrixFilter,
propertyHook,
propertyGet,
rMatrix = /Matrix([^)]*)/;
// test different vendor prefixes of this property
while ( i-- ) {
if ( testProperties[i] in divStyle ) {
$.support[propertyName] = supportProperty = testProperties[i];
continue;
}
}
// IE678 alternative
if ( !supportProperty ) {
$.support.matrixFilter = supportMatrixFilter = divStyle.filter === '';
}
// prevent IE memory leak
div = divStyle = null;
// px isn't the default unit of this property
$.cssNumber[propertyName] = true;
/*
* fn.css() hooks
*/
if ( supportProperty && supportProperty != propertyName ) {
// Modern browsers can use jQuery.cssProps as a basic hook
$.cssProps[propertyName] = supportProperty;
// Firefox needs a complete hook because it stuffs matrix with 'px'
if ( supportProperty == 'Moz' + suffix ) {
propertyHook = {
get: function( elem, computed ) {
return (computed ?
// remove 'px' from the computed matrix
$.css( elem, supportProperty ).split('px').join(''):
elem.style[supportProperty]
)
},
set: function( elem, value ) {
// remove 'px' from matrices
elem.style[supportProperty] = /matrix[^)p]*\)/.test(value) ?
value.replace(/matrix((?:[^,]*,){4})([^,]*),([^)]*)/, 'matrix$1$2px,$3px'):
value;
}
}
/* Fix two jQuery bugs still present in 1.5.1
* - rupper is incompatible with IE9, see http://jqbug.com/8346
* - jQuery.css is not really jQuery.cssProps aware, see http://jqbug.com/8402
*/
} else if ( /^1\.[0-5](?:\.|$)/.test($.fn.jquery) ) {
propertyHook = {
get: function( elem, computed ) {
return (computed ?
$.css( elem, supportProperty.replace(/^ms/, 'Ms') ):
elem.style[supportProperty]
)
}
}
}
/* TODO: leverage hardware acceleration of 3d transform in Webkit only
else if ( supportProperty == 'Webkit' + suffix && support3dTransform ) {
propertyHook = {
set: function( elem, value ) {
elem.style[supportProperty] =
value.replace();
}
}
}*/
} else if ( supportMatrixFilter ) {
propertyHook = {
get: function( elem, computed ) {
var elemStyle = ( computed && elem.currentStyle ? elem.currentStyle : elem.style ),
matrix;
if ( elemStyle && rMatrix.test( elemStyle.filter ) ) {
matrix = RegExp.$1.split(',');
matrix = [
matrix[0].split('=')[1],
matrix[2].split('=')[1],
matrix[1].split('=')[1],
matrix[3].split('=')[1]
];
} else {
matrix = [1,0,0,1];
}
matrix[4] = elemStyle ? elemStyle.left : 0;
matrix[5] = elemStyle ? elemStyle.top : 0;
return "matrix(" + matrix + ")";
},
set: function( elem, value, animate ) {
var elemStyle = elem.style,
currentStyle,
Matrix,
filter;
if ( !animate ) {
elemStyle.zoom = 1;
}
value = matrix(value);
// rotate, scale and skew
if ( !animate || animate.M ) {
Matrix = [
"Matrix("+
"M11="+value[0],
"M12="+value[2],
"M21="+value[1],
"M22="+value[3],
"SizingMethod='auto expand'"
].join();
filter = ( currentStyle = elem.currentStyle ) && currentStyle.filter || elemStyle.filter || "";
elemStyle.filter = rMatrix.test(filter) ?
filter.replace(rMatrix, Matrix) :
filter + " progid:DXImageTransform.Microsoft." + Matrix + ")";
// center the transform origin, from pbakaus's Transformie http://github.com/pbakaus/transformie
if ( (centerOrigin = $.transform.centerOrigin) ) {
elemStyle[centerOrigin == 'margin' ? 'marginLeft' : 'left'] = -(elem.offsetWidth/2) + (elem.clientWidth/2) + 'px';
elemStyle[centerOrigin == 'margin' ? 'marginTop' : 'top'] = -(elem.offsetHeight/2) + (elem.clientHeight/2) + 'px';
}
}
// translate
if ( !animate || animate.T ) {
// We assume that the elements are absolute positionned inside a relative positionned wrapper
elemStyle.left = value[4] + 'px';
elemStyle.top = value[5] + 'px';
}
}
}
}
// populate jQuery.cssHooks with the appropriate hook if necessary
if ( propertyHook ) {
$.cssHooks[propertyName] = propertyHook;
}
// we need a unique setter for the animation logic
propertyGet = propertyHook && propertyHook.get || $.css;
/*
* fn.animate() hooks
*/
$.fx.step.transform = function( fx ) {
var elem = fx.elem,
start = fx.start,
end = fx.end,
split,
pos = fx.pos,
transform,
translate,
rotate,
scale,
skew,
T = false,
M = false,
prop;
translate = rotate = scale = skew = '';
// fx.end and fx.start need to be converted to their translate/rotate/scale/skew components
// so that we can interpolate them
if ( !start || typeof start === "string" ) {
// the following block can be commented out with jQuery 1.5.1+, see #7912
if (!start) {
start = propertyGet( elem, supportProperty );
}
// force layout only once per animation
if ( supportMatrixFilter ) {
elem.style.zoom = 1;
}
// if the start computed matrix is in end, we are doing a relative animation
split = end.split(start);
if ( split.length == 2 ) {
// remove the start computed matrix to make animations more accurate
end = split.join('');
fx.origin = start;
start = 'none';
}
// start is either 'none' or a matrix(...) that has to be parsed
fx.start = start = start == 'none'?
{
translate: [0,0],
rotate: 0,
scale: [1,1],
skew: [0,0]
}:
unmatrix( toArray(start) );
// fx.end has to be parsed and decomposed
fx.end = end = ~end.indexOf('matrix')?
// bullet-proof parser
unmatrix(matrix(end)):
// faster and more precise parser
components(end);
// get rid of properties that do not change
for ( prop in start) {
if ( prop == 'rotate' ?
start[prop] == end[prop]:
start[prop][0] == end[prop][0] && start[prop][1] == end[prop][1]
) {
delete start[prop];
}
}
}
/*
* We want a fast interpolation algorithm.
* This implies avoiding function calls and sacrifying DRY principle:
* - avoid $.each(function(){})
* - round values using bitewise hacks, see http://jsperf.com/math-round-vs-hack/3
*/
if ( start.translate ) {
// round translate to the closest pixel
translate = ' translate('+
((start.translate[0] + (end.translate[0] - start.translate[0]) * pos + .5) | 0) +'px,'+
((start.translate[1] + (end.translate[1] - start.translate[1]) * pos + .5) | 0) +'px'+
')';
T = true;
}
if ( start.rotate != undefined ) {
rotate = ' rotate('+ (start.rotate + (end.rotate - start.rotate) * pos) +'rad)';
M = true;
}
if ( start.scale ) {
scale = ' scale('+
(start.scale[0] + (end.scale[0] - start.scale[0]) * pos) +','+
(start.scale[1] + (end.scale[1] - start.scale[1]) * pos) +
')';
M = true;
}
if ( start.skew ) {
skew = ' skew('+
(start.skew[0] + (end.skew[0] - start.skew[0]) * pos) +'rad,'+
(start.skew[1] + (end.skew[1] - start.skew[1]) * pos) +'rad'+
')';
M = true;
}
// In case of relative animation, restore the origin computed matrix here.
transform = fx.origin ?
fx.origin + translate + skew + scale + rotate:
translate + rotate + scale + skew;
propertyHook && propertyHook.set ?
propertyHook.set( elem, transform, {M: M, T: T} ):
elem.style[supportProperty] = transform;
};
/*
* Utility functions
*/
// turns a transform string into its 'matrix(A,B,C,D,X,Y)' form (as an array, though)
function matrix( transform ) {
transform = transform.split(')');
var
trim = $.trim
// last element of the array is an empty string, get rid of it
, i = transform.length -1
, split, prop, val
, A = 1
, B = 0
, C = 0
, D = 1
, A_, B_, C_, D_
, tmp1, tmp2
, X = 0
, Y = 0
;
// Loop through the transform properties, parse and multiply them
while (i--) {
split = transform[i].split('(');
prop = trim(split[0]);
val = split[1];
A_ = B_ = C_ = D_ = 0;
switch (prop) {
case 'translateX':
X += parseInt(val, 10);
continue;
case 'translateY':
Y += parseInt(val, 10);
continue;
case 'translate':
val = val.split(',');
X += parseInt(val[0], 10);
Y += parseInt(val[1] || 0, 10);
continue;
case 'rotate':
val = toRadian(val);
A_ = Math.cos(val);
B_ = Math.sin(val);
C_ = -Math.sin(val);
D_ = Math.cos(val);
break;
case 'scaleX':
A_ = val;
D_ = 1;
break;
case 'scaleY':
A_ = 1;
D_ = val;
break;
case 'scale':
val = val.split(',');
A_ = val[0];
D_ = val.length>1 ? val[1] : val[0];
break;
case 'skewX':
A_ = D_ = 1;
C_ = Math.tan(toRadian(val));
break;
case 'skewY':
A_ = D_ = 1;
B_ = Math.tan(toRadian(val));
break;
case 'skew':
A_ = D_ = 1;
val = val.split(',');
C_ = Math.tan(toRadian(val[0]));
B_ = Math.tan(toRadian(val[1] || 0));
break;
case 'matrix':
val = val.split(',');
A_ = +val[0];
B_ = +val[1];
C_ = +val[2];
D_ = +val[3];
X += parseInt(val[4], 10);
Y += parseInt(val[5], 10);
}
// Matrix product
tmp1 = A * A_ + B * C_;
B = A * B_ + B * D_;
tmp2 = C * A_ + D * C_;
D = C * B_ + D * D_;
A = tmp1;
C = tmp2;
}
return [A,B,C,D,X,Y];
}
// turns a matrix into its rotate, scale and skew components
// algorithm from http://hg.mozilla.org/mozilla-central/file/7cb3e9795d04/layout/style/nsStyleAnimation.cpp
function unmatrix(matrix) {
var
scaleX
, scaleY
, skew
, A = matrix[0]
, B = matrix[1]
, C = matrix[2]
, D = matrix[3]
;
// Make sure matrix is not singular
if ( A * D - B * C ) {
// step (3)
scaleX = Math.sqrt( A * A + B * B );
A /= scaleX;
B /= scaleX;
// step (4)
skew = A * C + B * D;
C -= A * skew;
D -= B * skew;
// step (5)
scaleY = Math.sqrt( C * C + D * D );
C /= scaleY;
D /= scaleY;
skew /= scaleY;
// step (6)
if ( A * D < B * C ) {
//scaleY = -scaleY;
//skew = -skew;
A = -A;
B = -B;
skew = -skew;
scaleX = -scaleX;
}
// matrix is singular and cannot be interpolated
} else {
rotate = scaleX = scaleY = skew = 0;
}
return {
translate: [+matrix[4], +matrix[5]],
rotate: Math.atan2(B, A),
scale: [scaleX, scaleY],
skew: [skew, 0]
}
}
// parse tranform components of a transform string not containing 'matrix(...)'
function components( transform ) {
// split the != transforms
transform = transform.split(')');
var translate = [0,0],
rotate = 0,
scale = [1,1],
skew = [0,0],
i = transform.length -1,
trim = $.trim,
split, name, value;
// add components
while ( i-- ) {
split = transform[i].split('(');
name = trim(split[0]);
value = split[1];
if (name == 'translateX') {
translate[0] += parseInt(value, 10);
} else if (name == 'translateY') {
translate[1] += parseInt(value, 10);
} else if (name == 'translate') {
value = value.split(',');
translate[0] += parseInt(value[0], 10);
translate[1] += parseInt(value[1] || 0, 10);
} else if (name == 'rotate') {
rotate += toRadian(value);
} else if (name == 'scaleX') {
scale[0] *= value;
} else if (name == 'scaleY') {
scale[1] *= value;
} else if (name == 'scale') {
value = value.split(',');
scale[0] *= value[0];
scale[1] *= (value.length>1? value[1] : value[0]);
} else if (name == 'skewX') {
skew[0] += toRadian(value);
} else if (name == 'skewY') {
skew[1] += toRadian(value);
} else if (name == 'skew') {
value = value.split(',');
skew[0] += toRadian(value[0]);
skew[1] += toRadian(value[1] || '0');
}
}
return {
translate: translate,
rotate: rotate,
scale: scale,
skew: skew
};
}
// converts an angle string in any unit to a radian Float
function toRadian(value) {
return ~value.indexOf('deg') ?
parseInt(value,10) * (Math.PI * 2 / 360):
~value.indexOf('grad') ?
parseInt(value,10) * (Math.PI/200):
parseFloat(value);
}
// Converts 'matrix(A,B,C,D,X,Y)' to [A,B,C,D,X,Y]
function toArray(matrix) {
// Fremove the unit of X and Y for Firefox
matrix = /\(([^,]*),([^,]*),([^,]*),([^,]*),([^,p]*)(?:px)?,([^)p]*)(?:px)?/.exec(matrix);
return [matrix[1], matrix[2], matrix[3], matrix[4], matrix[5], matrix[6]];
}
$.transform = {
centerOrigin: 'margin'
};
})( jQuery ); |
:: Command execute :: | |
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