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raphael.free_transform.js
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/*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/
(function (root, factory) {
if ( typeof define === 'function' && define.amd ) {
// AMD. Register as an anonymous module.
define(['raphael'], function(Raphael) {
// Use global variables if the locals are undefined.
return factory(Raphael || root.Raphael);
});
} else {
// RequireJS isn't being used. Assume underscore and backbone are loaded in <script> tags
factory(Raphael);
}
}(this, function(Raphael) {
Raphael.fn.freeTransform = function(subject, options, callback) {
var
ft, i, mapped, timeout,
paper = this,
bbox = subject.getBBox(true);
// Enable method chaining
if ( subject.freeTransform ) {
return subject.freeTransform;
}
// Add Array.map if the browser doesn't support it
if ( !Array.prototype.hasOwnProperty('map') ) {
Array.prototype.map = function(callback, arg) {
mapped = [];
for ( i in this ) {
if ( this.hasOwnProperty(i) ) {
mapped[i] = callback.call(arg, this[i], i, this);
}
}
return mapped;
};
}
// Add Array.indexOf if not builtin
if ( !Array.prototype.hasOwnProperty('indexOf') ) {
Array.prototype.indexOf = function(obj, start) {
for ( i = ( start || 0 ), j = this.length; i < j; i++ ) {
if ( this[i] === obj ) {
return i;
}
}
return -1;
};
}
ft = subject.freeTransform = {
// Keep track of transformations
attrs: {
x: bbox.x,
y: bbox.y,
size: { x: bbox.width, y: bbox.height },
center: { x: bbox.x + bbox.width / 2, y: bbox.y + bbox.height / 2 },
rotate: 0,
scale: { x: 1, y: 1 },
translate: { x: 0, y: 0 },
ratio: 1
},
axes: null,
bbox: null,
callback: null,
items: [],
handles: { center: null, x: null, y: null },
offset: {
rotate: 0,
scale: { x: 1, y: 1 },
translate: { x: 0, y: 0 }
},
opts: {
animate: false,
attrs: { fill: '#fff', stroke: '#000' },
boundary: { x: paper._left || 0, y: paper._top || 0, width: null, height: null },
customCorners: false, // { size: <number>, distance: <number>, corners: [ action: <string>, image: <string> ] }
distance: 1.3,
drag: true,
draw: false,
keepRatio: false,
range: { rotate: [ -180, 180 ], scale: [ -99999, 99999 ] },
rotate: true,
scale: true,
snap: { rotate: 0, scale: 0, drag: 0 },
snapDist: { rotate: 0, scale: 0, drag: 7 },
size: 5
},
subject: subject
};
/**
* Update handles based on the element's transformations
*/
ft.updateHandles = function() {
var
corners, cornersDistance, rad, radius, cx, cy, viewBoxRatio,
bboxHandleDirection = [ // Allowed x, y scaling directions for bbox handles
[ -1, -1 ], [ 1, -1 ], [ 1, 1 ], [ -1, 1 ],
[ 0, -1 ], [ 1, 0 ], [ 0, 1 ], [ -1, 0 ]
];
if ( ft.handles.bbox || ft.opts.rotate.indexOf('self') >= 0 ) {
cornersDistance = corners = getBBox(0);
if ( ft.opts.customCorners && typeof ft.opts.customCorners.distance === 'number' ) {
cornersDistance = getBBox(ft.opts.customCorners.distance);
}
}
// Get the element's rotation
rad = {
x: ( ft.attrs.rotate ) * Math.PI / 180,
y: ( ft.attrs.rotate + 90 ) * Math.PI / 180
};
radius = {
x: ft.attrs.size.x / 2 * ft.attrs.scale.x,
y: ft.attrs.size.y / 2 * ft.attrs.scale.y
};
ft.axes.map(function(axis) {
if ( ft.handles[axis] ) {
cx = ft.attrs.center.x + ft.attrs.translate.x + radius[axis] * ft.opts.distance * Math.cos(rad[axis]),
cy = ft.attrs.center.y + ft.attrs.translate.y + radius[axis] * ft.opts.distance * Math.sin(rad[axis]),
viewBoxRatio = { x: 1, y: 1 };
// viewBox might be scaled
if ( paper._viewBox ) {
viewBoxRatio = {
x: paper._viewBox[2] / getPaperSize().x,
y: paper._viewBox[3] / getPaperSize().y
};
}
// Keep handle within boundaries
if ( ft.opts.boundary ) {
cx = Math.max(Math.min(cx, ft.opts.boundary.x + ( ft.opts.boundary.width || getPaperSize().x * viewBoxRatio.x)), ft.opts.boundary.x);
cy = Math.max(Math.min(cy, ft.opts.boundary.y + ( ft.opts.boundary.height || getPaperSize().y * viewBoxRatio.y)), ft.opts.boundary.y);
}
ft.handles[axis].disc.attr({ cx: cx, cy: cy });
ft.handles[axis].line.toFront().attr({
path: [ [ 'M', ft.attrs.center.x + ft.attrs.translate.x, ft.attrs.center.y + ft.attrs.translate.y ], [ 'L', ft.handles[axis].disc.attrs.cx, ft.handles[axis].disc.attrs.cy ] ]
});
ft.handles[axis].disc.toFront();
}
});
if ( ft.bbox ) {
ft.bbox.toFront().attr({
path: [
[ 'M', corners[0].x, corners[0].y ],
[ 'L', corners[1].x, corners[1].y ],
[ 'L', corners[2].x, corners[2].y ],
[ 'L', corners[3].x, corners[3].y ],
[ 'L', corners[0].x, corners[0].y ]
]
});
if ( ft.handles.bbox ) {
ft.handles.bbox.map(function (handle, i) {
var cx, cy, j, k;
if ( handle.isCorner ) {
cx = cornersDistance[i].x;
cy = cornersDistance[i].y;
} else {
j = i % 4;
k = ( j + 1 ) % corners.length;
cx = ( cornersDistance[j].x + cornersDistance[k].x ) / 2;
cy = ( cornersDistance[j].y + cornersDistance[k].y ) / 2;
}
handle.element.toFront()
.attr({
x: cx - ( handle.isCorner ? ( ft.opts.customCorners ? Math.ceil(ft.opts.customCorners.size / 2) : ft.opts.size.bboxCorners ) : ft.opts.size.bboxSides ),
y: cy - ( handle.isCorner ? ( ft.opts.customCorners ? Math.ceil(ft.opts.customCorners.size / 2) : ft.opts.size.bboxCorners ) : ft.opts.size.bboxSides )
})
.transform(ft.opts.customCorners ? null : 'R' + ft.attrs.rotate);
handle.x = bboxHandleDirection[i][0];
handle.y = bboxHandleDirection[i][1];
});
}
}
if ( ft.circle ) {
ft.circle.attr({
cx: ft.attrs.center.x + ft.attrs.translate.x,
cy: ft.attrs.center.y + ft.attrs.translate.y,
r: Math.max(radius.x, radius.y) * ft.opts.distance
});
}
if ( ft.handles.center ) {
ft.handles.center.disc.toFront().attr({
cx: ft.attrs.center.x + ft.attrs.translate.x,
cy: ft.attrs.center.y + ft.attrs.translate.y
});
}
if ( ft.opts.rotate.indexOf('self') >= 0 ) {
radius = Math.max(
Math.sqrt(Math.pow(corners[1].x - corners[0].x, 2) + Math.pow(corners[1].y - corners[0].y, 2)),
Math.sqrt(Math.pow(corners[2].x - corners[1].x, 2) + Math.pow(corners[2].y - corners[1].y, 2))
) / 2;
}
return ft;
};
/**
* Add handles
*/
ft.showHandles = function() {
var
i, handle, rotate, scale,
handles = [];
draggables = [];
ft.hideHandles();
ft.axes.map(function(axis) {
ft.handles[axis] = {};
ft.handles[axis].line = paper
.path([ 'M', ft.attrs.center.x, ft.attrs.center.y ])
.attr({
stroke: ft.opts.attrs.stroke,
'stroke-dasharray': '- ',
opacity: .5
});
ft.handles[axis].disc = paper
.circle(ft.attrs.center.x, ft.attrs.center.y, ft.opts.size.axes)
.attr(ft.opts.attrs);
ft.handles[axis].disc.node.setAttribute('class', 'handle arm axis-' + axis);
});
if ( ft.opts.draw.indexOf('bbox') >= 0 ) {
ft.bbox = paper
.path('')
.attr({
stroke: ft.opts.attrs.stroke,
'stroke-dasharray': '- ',
opacity: .5
});
ft.handles.bbox = [];
for ( i = ( ft.opts.scale.indexOf('bboxCorners') || ft.opts.customCorners >= 0 ? 0 : 4 ); i < ( ft.opts.scale.indexOf('bboxSides') === -1 ? 4 : 8 ); i ++ ) {
handle = {};
handle.index = i;
handle.axis = i % 2 ? 'x' : 'y';
handle.isCorner = i < 4;
if ( handle.isCorner && ft.opts.customCorners ) {
handle.element = paper
.image(ft.opts.customCorners.corners[i].image, ft.attrs.center.x, ft.attrs.center.y, ft.opts.customCorners.size, ft.opts.customCorners.size);
} else {
handle.element = paper
.rect(ft.attrs.center.x, ft.attrs.center.y, ft.opts.size[handle.isCorner ? 'bboxCorners' : 'bboxSides' ] * 2, ft.opts.size[handle.isCorner ? 'bboxCorners' : 'bboxSides' ] * 2)
.attr(ft.opts.attrs);
if ( handle.isCorner ) {
handle.element.node.setAttribute('class', 'handle bbox corner index-' + i + ' axis-' + handle.axis);
} else {
handle.element.node.setAttribute('class', 'handle bbox side index-' + ( i - 4 ) + ' axis-' + handle.axis);
}
}
ft.handles.bbox[i] = handle;
}
}
if ( ft.opts.draw.indexOf('circle') !== -1 ) {
ft.circle = paper
.circle(0, 0, 0)
.attr({
stroke: ft.opts.attrs.stroke,
'stroke-dasharray': '- ',
opacity: .3
});
}
if ( ft.opts.drag.indexOf('center') !== -1 ) {
ft.handles.center = {};
ft.handles.center.disc = paper
.circle(ft.attrs.center.x, ft.attrs.center.y, ft.opts.size.center)
.attr(ft.opts.attrs);
ft.handles.center.disc.node.setAttribute('class', 'handle center');
}
// Drag x, y handles and custom corners
ft.axes.map(function(axis) {
if ( ft.handles[axis] ) {
handles.push({
element: ft.handles[axis].disc,
rotate: ft.opts.rotate.indexOf('axis' + axis.toUpperCase()) !== -1,
scale: ft.opts.scale .indexOf('axis' + axis.toUpperCase()) !== -1,
axis: axis,
isCorner: false
});
}
});
if ( ft.opts.customCorners ) {
ft.handles.bbox.map(function(handle) {
var action;
if ( typeof ft.opts.customCorners.corners[handle.index] !== 'undefined' ) {
action = ft.opts.customCorners.corners[handle.index].action;
if ( action === 'rotate' || action === 'scale' ) {
handles.push({
element: handle.element,
rotate: action === 'rotate',
scale: action === 'scale',
axis: 'x',
isCorner: true
});
}
}
});
}
handles.map(function(handle) {
handle.element.drag(function(dx, dy) {
var
cx, cy, rad, opposite, adjacent, hypotenuse, pos,
mirrored = {
x: ft.o.scale.x < 0,
y: ft.o.scale.y < 0
};
// viewBox might be scaled
if ( ft.o.viewBoxRatio ) {
dx *= ft.o.viewBoxRatio.x;
dy *= ft.o.viewBoxRatio.y;
}
cx = dx + handle.element.ox,
cy = dy + handle.element.oy;
if ( handle.rotate ) {
rad = Math.atan2(cy - ft.o.center.y - ft.o.translate.y, cx - ft.o.center.x - ft.o.translate.x);
ft.attrs.rotate = rad * 180 / Math.PI - ft.o.angle;
if ( mirrored[handle.axis] ) {
ft.attrs.rotate -= 180;
}
}
// Keep handle within boundaries
if ( ft.opts.boundary ) {
cx = Math.max(Math.min(cx, ft.opts.boundary.x + ( ft.opts.boundary.width || getPaperSize().x * (ft.o.viewBoxRatio && ft.o.viewBoxRatio.x || 1))), ft.opts.boundary.x);
cy = Math.max(Math.min(cy, ft.opts.boundary.y + ( ft.opts.boundary.height || getPaperSize().y * (ft.o.viewBoxRatio && ft.o.viewBoxRatio.y || 1))), ft.opts.boundary.y);
}
opposite = cx - ft.o.center.x - ft.o.translate.x - ( ft.opts.customCorners ? ft.opts.customCorners.distance : 0 ),
adjacent = cy - ft.o.center.y - ft.o.translate.y - ( ft.opts.customCorners ? ft.opts.customCorners.distance : 0 ),
hypotenuse = Math.sqrt(Math.pow(opposite, 2) + Math.pow(adjacent, 2));
if ( handle.scale ) {
ft.attrs.scale[handle.axis] = hypotenuse / ( ft.o.size[handle.axis] / 2 * ft.o.distance );
if ( mirrored[handle.axis] ) {
ft.attrs.scale[handle.axis] *= -1;
}
}
applyLimits();
// Maintain aspect ratio
if ( ft.opts.keepRatio.indexOf('axis' + handle.axis.toUpperCase()) !== -1 ) {
keepRatio(handle.axis);
} else {
ft.attrs.ratio = ft.attrs.scale.x / ft.attrs.scale.y;
}
if ( ft.attrs.scale.x && ft.attrs.scale.y ) {
ft.apply();
}
asyncCallback([ handle.rotate ? 'rotate' : null, handle.scale ? 'scale' : null ]);
}, function() {
// Offset values
ft.o = cloneObj(ft.attrs);
if ( paper._viewBox ) {
ft.o.viewBoxRatio = {
x: paper._viewBox[2] / getPaperSize().x,
y: paper._viewBox[3] / getPaperSize().y
};
}
handle.element.ox = this.attrs.cx ? this.attrs.cx : this.attrs.x + this.attrs.width / 2;
handle.element.oy = this.attrs.cy ? this.attrs.cy : this.attrs.y + this.attrs.height / 2;
if ( handle.isCorner ) {
hypotenuse = Math.sqrt(Math.pow(ft.o.size.x * ft.o.scale.x, 2) + Math.pow(ft.o.size.y * ft.o.scale.y, 2)) / 2,
opposite = ft.o.size.x * ft.o.scale.x / 2,
pos = {
x: handle.element.ox - ( ft.o.center.x + ft.o.x + ft.o.translate.x ),
y: handle.element.oy - ( ft.o.center.y + ft.o.y + ft.o.translate.y )
};
// Distance from centre of handle to centre of element
ft.o.distance = hypotenuse / opposite;
ft.o.angle = 90 - ( Math.atan2(pos.x, pos.y) * 180 / Math.PI ) - ft.o.rotate;
} else {
ft.o.distance = ft.opts.distance;
ft.o.angle = handle.axis === 'y' ? 90 : 0;
}
asyncCallback([ handle.rotate ? 'rotate start' : null, handle.scale ? 'scale start' : null ]);
}, function() {
asyncCallback([ handle.rotate ? 'rotate end' : null, handle.scale ? 'scale end' : null ]);
});
});
// Drag bbox handles
if ( ft.opts.draw.indexOf('bbox') >= 0 && !ft.opts.customCorners && ( ft.opts.scale.indexOf('bboxCorners') !== -1 || ft.opts.scale.indexOf('bboxSides') !== -1 ) ) {
ft.handles.bbox.map(function(handle) {
handle.element.drag(function(dx, dy) {
var
sin, cos, rx, ry, rdx, rdy, mx, my, sx, sy, ratio, tdy, tdx,
previous = cloneObj(ft.attrs),
trans = { x: 0, y: 0 };
// viewBox might be scaled
if ( ft.o.viewBoxRatio ) {
dx *= ft.o.viewBoxRatio.x;
dy *= ft.o.viewBoxRatio.y;
}
sin = ft.o.rotate.sin;
cos = ft.o.rotate.cos;
// First rotate dx, dy to element alignment
rx = dx * cos - dy * sin;
ry = dx * sin + dy * cos;
rx *= Math.abs(handle.x);
ry *= Math.abs(handle.y);
// And finally rotate back to canvas alignment
rdx = rx * cos + ry * sin;
rdy = rx * - sin + ry * cos;
ft.attrs.translate = {
x: ft.o.translate.x + rdx / 2,
y: ft.o.translate.y + rdy / 2
};
// Mouse position, relative to element center after translation
mx = ft.o.handlePos.cx + dx - ft.attrs.center.x - ft.attrs.translate.x;
my = ft.o.handlePos.cy + dy - ft.attrs.center.y - ft.attrs.translate.y;
// Position rotated to align with element
rx = mx * cos - my * sin;
ry = mx * sin + my * cos;
// Maintain aspect ratio
if ( handle.isCorner && ft.opts.keepRatio.indexOf('bboxCorners') !== -1 ) {
ratio = ( ft.attrs.size.x * ft.attrs.scale.x ) / ( ft.attrs.size.y * ft.attrs.scale.y ),
tdy = rx * handle.x * ( 1 / ratio ),
tdx = ry * handle.y * ratio;
if ( tdx > tdy * ratio ) {
rx = tdx * handle.x;
} else {
ry = tdy * handle.y;
}
}
// Scale element so that handle is at mouse position
sx = rx * 2 * handle.x / ft.o.size.x;
sy = ry * 2 * handle.y / ft.o.size.y;
ft.attrs.scale = {
x: sx || ft.attrs.scale.x,
y: sy || ft.attrs.scale.y
};
// Check boundaries
if ( !isWithinBoundaries().x || !isWithinBoundaries().y ) { ft.attrs = previous; }
applyLimits();
// Maintain aspect ratio
if ( ( handle.isCorner && ft.opts.keepRatio.indexOf('bboxCorners') !== -1 ) || ( !handle.isCorner && ft.opts.keepRatio.indexOf('bboxSides') !== -1 ) ) {
keepRatio(handle.axis);
trans.x = ( ft.attrs.scale.x - ft.o.scale.x ) * ft.o.size.x * handle.x;
trans.y = ( ft.attrs.scale.y - ft.o.scale.y ) * ft.o.size.y * handle.y;
rx = trans.x * cos + trans.y * sin;
ry = - trans.x * sin + trans.y * cos;
ft.attrs.translate.x = ft.o.translate.x + rx / 2;
ft.attrs.translate.y = ft.o.translate.y + ry / 2;
}
ft.attrs.ratio = ft.attrs.scale.x / ft.attrs.scale.y;
asyncCallback([ 'scale' ]);
ft.apply();
}, function() {
var
angle = ( ( 360 - ft.attrs.rotate ) % 360 ) / 180 * Math.PI,
handlePos = handle.element.attr(['x', 'y']);
// Offset values
ft.o = cloneObj(ft.attrs);
ft.o.handlePos = {
cx: handlePos.x + ft.opts.size[handle.isCorner ? 'bboxCorners' : 'bboxSides'],
cy: handlePos.y + ft.opts.size[handle.isCorner ? 'bboxCorners' : 'bboxSides']
};
// Pre-compute rotation sin & cos for efficiency
ft.o.rotate = {
sin: Math.sin(angle),
cos: Math.cos(angle)
};
if ( paper._viewBox ) {
ft.o.viewBoxRatio = {
x: paper._viewBox[2] / getPaperSize().x,
y: paper._viewBox[3] / getPaperSize().y
};
}
asyncCallback([ 'scale start' ]);
}, function() {
asyncCallback([ 'scale end' ]);
});
});
}
// Custom BBox corners
if ( ft.opts.customCorners ) {
ft.handles.bbox.map(function(handle) {
if ( typeof ft.opts.customCorners.corners[handle.index] !== 'undefined' ) {
if ( [ 'drag', 'rotate', 'scale' ].indexOf(ft.opts.customCorners.corners[handle.index].action) === -1 ) {
// Unknown action, absorb drag event and emit as custom event on click
handle.element.drag(function() {
return false;
});
handle.element.click(function() {
asyncCallback([ 'custom:' + ft.opts.customCorners.corners[handle.index].action ]);
});
}
}
});
}
// Drag element and center handle
if ( ft.opts.drag.indexOf('self') >= 0 && ft.opts.scale.indexOf('self') === -1 && ft.opts.rotate.indexOf('self') === -1 ) {
draggables.push(subject);
}
if ( ft.opts.drag.indexOf('center') >= 0 ) {
draggables.push(ft.handles.center.disc);
}
if ( ft.opts.customCorners ) {
ft.handles.bbox.map(function(handle) {
if ( typeof ft.opts.customCorners.corners[handle.index] !== 'undefined' ) {
if ( ft.opts.customCorners.corners[handle.index].action === 'drag' ) {
draggables.push(handle.element);
}
}
});
}
draggables.map(function(draggable) {
draggable.drag(function(dx, dy) {
var bbox = cloneObj(ft.o.bbox);
// viewBox might be scaled
if ( ft.o.viewBoxRatio ) {
dx *= ft.o.viewBoxRatio.x;
dy *= ft.o.viewBoxRatio.y;
}
ft.attrs.translate.x = ft.o.translate.x + dx;
ft.attrs.translate.y = ft.o.translate.y + dy;
bbox.x += dx;
bbox.y += dy;
applyLimits(bbox);
asyncCallback([ 'drag' ]);
ft.apply();
}, function() {
// Offset values
ft.o = cloneObj(ft.attrs);
if ( ft.opts.snap.drag ) {
ft.o.bbox = subject.getBBox();
}
// viewBox might be scaled
if ( paper._viewBox ) {
ft.o.viewBoxRatio = {
x: paper._viewBox[2] / getPaperSize().x,
y: paper._viewBox[3] / getPaperSize().y
};
}
ft.axes.map(function(axis) {
if ( ft.handles[axis] ) {
ft.handles[axis].disc.ox = ft.handles[axis].disc.attrs.cx;
ft.handles[axis].disc.oy = ft.handles[axis].disc.attrs.cy;
}
});
asyncCallback([ 'drag start' ]);
}, function() {
asyncCallback([ 'drag end' ]);
});
});
rotate = ft.opts.rotate.indexOf('self') >= 0,
scale = ft.opts.scale .indexOf('self') >= 0;
if ( rotate || scale ) {
subject.drag(function(dx, dy, x, y) {
var
rad, radius,
mirrored = {
x: ft.o.scale.x < 0,
y: ft.o.scale.y < 0
};
if ( rotate ) {
rad = Math.atan2(y - ft.o.center.y - ft.o.translate.y, x - ft.o.center.x - ft.o.translate.x);
ft.attrs.rotate = ft.o.rotate + ( rad * 180 / Math.PI ) - ft.o.deg;
}
if ( scale ) {
radius = Math.sqrt(Math.pow(x - ft.o.center.x - ft.o.translate.x, 2) + Math.pow(y - ft.o.center.y - ft.o.translate.y, 2));
ft.attrs.scale.x = ft.attrs.scale.y = ( mirrored.x ? -1 : 1 ) * ft.o.scale.x + ( radius - ft.o.radius ) / ( ft.o.size.x / 2 );
if ( mirrored.x ) { ft.attrs.scale.x *= -1; }
if ( mirrored.y ) { ft.attrs.scale.y *= -1; }
}
applyLimits();
ft.apply();
asyncCallback([ rotate ? 'rotate' : null, scale ? 'scale' : null ]);
}, function(x, y) {
// Offset values
ft.o = cloneObj(ft.attrs);
ft.o.deg = Math.atan2(y - ft.o.center.y - ft.o.translate.y, x - ft.o.center.x - ft.o.translate.x) * 180 / Math.PI;
ft.o.radius = Math.sqrt(Math.pow(x - ft.o.center.x - ft.o.translate.x, 2) + Math.pow(y - ft.o.center.y - ft.o.translate.y, 2));
// viewBox might be scaled
if ( paper._viewBox ) {
ft.o.viewBoxRatio = {
x: paper._viewBox[2] / getPaperSize().x,
y: paper._viewBox[3] / getPaperSize().y
};
}
asyncCallback([ rotate ? 'rotate start' : null, scale ? 'scale start' : null ]);
}, function() {
asyncCallback([ rotate ? 'rotate end' : null, scale ? 'scale end' : null ]);
});
}
ft.updateHandles();
return ft;
};
/**
* Remove handles
*/
ft.hideHandles = function(opts) {
var opts = opts || {}
if ( opts.undrag === undefined ) {
opts.undrag = true;
}
if ( opts.undrag ) {
ft.items.map(function(item) {
item.el.undrag();
});
}
if ( ft.handles.center ) {
ft.handles.center.disc.remove();
ft.handles.center = null;
}
[ 'x', 'y' ].map(function(axis) {
if ( ft.handles[axis] ) {
ft.handles[axis].disc.remove();
ft.handles[axis].line.remove();
ft.handles[axis] = null;
}
});
if ( ft.bbox ) {
ft.bbox.remove();
ft.bbox = null;
if ( ft.handles.bbox ) {
ft.handles.bbox.map(function(handle) {
handle.element.remove();
});
ft.handles.bbox = null;
}
}
if ( ft.circle ) {
ft.circle.remove();
ft.circle = null;
}
return ft;
};
// Override defaults
ft.setOpts = function(options, callback) {
var i, j;
if ( callback !== undefined ) {
ft.callback = typeof callback === 'function' ? callback : false;
}
for ( i in options ) {
if ( options[i] && options[i].constructor === Object ) {
if(ft.opts[i] === false){
ft.opts[i] = {};
}
for ( j in options[i] ) {
if ( options[i].hasOwnProperty(j) ) {
ft.opts[i][j] = options[i][j];
}
}
} else {
ft.opts[i] = options[i];
}
}
if ( ft.opts.animate === true ) {
ft.opts.animate = { delay: 700, easing: 'linear' };
}
if ( ft.opts.drag === true ) {
ft.opts.drag = [ 'center', 'self' ];
}
if ( ft.opts.keepRatio === true ) {
ft.opts.keepRatio = [ 'axisX', 'axisY', 'bboxCorners', 'bboxSides' ];
}
if ( ft.opts.rotate === true ) {
ft.opts.rotate = [ 'axisX', 'axisY' ];
}
if ( ft.opts.scale === true ) {
ft.opts.scale = [ 'axisX', 'axisY', 'bboxCorners', 'bboxSides' ];
}
[ 'drag', 'draw', 'keepRatio', 'rotate', 'scale' ].map(function(option) {
if ( ft.opts[option] === false ) {
ft.opts[option] = [];
}
});
ft.axes = [];
if ( ft.opts.rotate.indexOf('axisX') >= 0 || ft.opts.scale.indexOf('axisX') >= 0 ) {
ft.axes.push('x');
}
if ( ft.opts.rotate.indexOf('axisY') >= 0 || ft.opts.scale.indexOf('axisY') >= 0 ) {
ft.axes.push('y');
}
[ 'drag', 'rotate', 'scale' ].map(function(option) {
if ( !ft.opts.snapDist[option] ) {
ft.opts.snapDist[option] = ft.opts.snap[option];
}
});
// Force numbers
ft.opts.range = {
rotate: [ parseFloat(ft.opts.range.rotate[0]), parseFloat(ft.opts.range.rotate[1]) ],
scale: [ parseFloat(ft.opts.range.scale[0]), parseFloat(ft.opts.range.scale[1]) ]
};
ft.opts.snap = {
drag: parseFloat(ft.opts.snap.drag) || 0,
rotate: parseFloat(ft.opts.snap.rotate) || 0,
scale: parseFloat(ft.opts.snap.scale) || 0
};
ft.opts.snapDist = {
drag: parseFloat(ft.opts.snapDist.drag) || 0,
rotate: parseFloat(ft.opts.snapDist.rotate) || 0,
scale: parseFloat(ft.opts.snapDist.scale) || 0
};
if ( typeof ft.opts.size === 'string' ) {
ft.opts.size = parseFloat(ft.opts.size) || 0;
}
if ( !isNaN(ft.opts.size) ) {
ft.opts.size = {
axes: ft.opts.size,
bboxCorners: ft.opts.size,
bboxSides: ft.opts.size,
center: ft.opts.size
};
}
if ( ft.opts.customCorners ) {
ft.opts.customCorners.size = parseFloat(ft.opts.customCorners.size) || 0;
ft.opts.customCorners.distance = parseFloat(ft.opts.customCorners.distance) || 0;
}
ft.showHandles();
asyncCallback([ 'init' ]);
return ft;
};
ft.setOpts(options, callback);
/**
* Apply transformations, optionally update attributes manually
*/
ft.apply = function() {
ft.items.map(function(item, i) {
// Take offset values into account
var
center = {
x: ft.attrs.center.x + ft.offset.translate.x,
y: ft.attrs.center.y + ft.offset.translate.y
},
rotate = ft.attrs.rotate - ft.offset.rotate,
scale = {
x: ft.attrs.scale.x / ft.offset.scale.x,
y: ft.attrs.scale.y / ft.offset.scale.y
},
translate = {
x: ft.attrs.translate.x - ft.offset.translate.x,
y: ft.attrs.translate.y - ft.offset.translate.y
};
if ( ft.opts.animate ) {
asyncCallback([ 'animate start' ]);
item.el.animate(
{ transform: [
'R', rotate, center.x, center.y,
'S', scale.x, scale.y, center.x, center.y,
'T', translate.x, translate.y
] + ft.items[i].transformString },
ft.opts.animate.delay,
ft.opts.animate.easing,
function() {
asyncCallback([ 'animate end' ]);
ft.updateHandles();
}
);
} else {
item.el.transform([
'R', rotate, center.x, center.y,
'S', scale.x, scale.y, center.x, center.y,
'T', translate.x, translate.y
] + ft.items[i].transformString);
asyncCallback([ 'apply' ]);
ft.updateHandles();
}
});
return ft;
};
/**
* Clean exit
*/
ft.unplug = function() {
var attrs = ft.attrs;
ft.hideHandles();
// Goodbye
delete subject.freeTransform;
return attrs;
};
// Store attributes for each item
function scan(subject) {
( subject.type === 'set' ? subject.items : [ subject ] ).map(function(item) {
if ( item.type === 'set' ) {
scan(item);
} else {
ft.items.push({
el: item,
attrs: {
rotate: 0,
scale: { x: 1, y: 1 },
translate: { x: 0, y: 0 }
},
transformString: item.matrix.toTransformString()
});
}
});
}
scan(subject);
// Get the current transform values for each item
ft.items.map(function(item, i) {
if ( item.el._ && item.el._.transform && typeof item.el._.transform === 'object' ) {
item.el._.transform.map(function(transform) {
if ( transform[0] ) {
switch ( transform[0].toUpperCase() ) {
case 'T':
ft.items[i].attrs.translate.x += transform[1];
ft.items[i].attrs.translate.y += transform[2];
break;
case 'S':
ft.items[i].attrs.scale.x *= transform[1];
ft.items[i].attrs.scale.y *= transform[2];
break;
case 'R':
ft.items[i].attrs.rotate += transform[1];
break;
}
}
});
}
});
// If subject is not of type set, the first item _is_ the subject
if ( subject.type !== 'set' ) {
ft.attrs.rotate = ft.items[0].attrs.rotate;
ft.attrs.scale = ft.items[0].attrs.scale;
ft.attrs.translate = ft.items[0].attrs.translate;
ft.items[0].attrs = {
rotate: 0,
scale: { x: 1, y: 1 },
translate: { x: 0, y: 0 }
};
ft.items[0].transformString = '';
}
ft.attrs.ratio = ft.attrs.scale.x / ft.attrs.scale.y;