mirror of
https://github.com/Hopiu/fabric.js.git
synced 2026-05-26 06:03:44 +00:00
529 lines
16 KiB
JavaScript
529 lines
16 KiB
JavaScript
(function() {
|
|
|
|
var degreesToRadians = fabric.util.degreesToRadians,
|
|
//jscs:disable requireCamelCaseOrUpperCaseIdentifiers
|
|
isVML = function() { return typeof G_vmlCanvasManager !== 'undefined'; };
|
|
//jscs:enable requireCamelCaseOrUpperCaseIdentifiers
|
|
|
|
fabric.util.object.extend(fabric.Object.prototype, /** @lends fabric.Object.prototype */ {
|
|
|
|
/**
|
|
* The object interactivity controls.
|
|
* @private
|
|
*/
|
|
_controlsVisibility: null,
|
|
|
|
/**
|
|
* Determines which corner has been clicked
|
|
* @private
|
|
* @param {Object} pointer The pointer indicating the mouse position
|
|
* @return {String|Boolean} corner code (tl, tr, bl, br, etc.), or false if nothing is found
|
|
*/
|
|
_findTargetCorner: function(pointer) {
|
|
if (!this.hasControls || !this.active) {
|
|
return false;
|
|
}
|
|
|
|
var ex = pointer.x,
|
|
ey = pointer.y,
|
|
xPoints,
|
|
lines;
|
|
|
|
for (var i in this.oCoords) {
|
|
|
|
if (!this.isControlVisible(i)) {
|
|
continue;
|
|
}
|
|
|
|
if (i === 'mtr' && !this.hasRotatingPoint) {
|
|
continue;
|
|
}
|
|
|
|
if (this.get('lockUniScaling') &&
|
|
(i === 'mt' || i === 'mr' || i === 'mb' || i === 'ml')) {
|
|
continue;
|
|
}
|
|
|
|
lines = this._getImageLines(this.oCoords[i].corner);
|
|
|
|
// debugging
|
|
|
|
// canvas.contextTop.fillRect(lines.bottomline.d.x, lines.bottomline.d.y, 2, 2);
|
|
// canvas.contextTop.fillRect(lines.bottomline.o.x, lines.bottomline.o.y, 2, 2);
|
|
|
|
// canvas.contextTop.fillRect(lines.leftline.d.x, lines.leftline.d.y, 2, 2);
|
|
// canvas.contextTop.fillRect(lines.leftline.o.x, lines.leftline.o.y, 2, 2);
|
|
|
|
// canvas.contextTop.fillRect(lines.topline.d.x, lines.topline.d.y, 2, 2);
|
|
// canvas.contextTop.fillRect(lines.topline.o.x, lines.topline.o.y, 2, 2);
|
|
|
|
// canvas.contextTop.fillRect(lines.rightline.d.x, lines.rightline.d.y, 2, 2);
|
|
// canvas.contextTop.fillRect(lines.rightline.o.x, lines.rightline.o.y, 2, 2);
|
|
|
|
xPoints = this._findCrossPoints({ x: ex, y: ey }, lines);
|
|
if (xPoints !== 0 && xPoints % 2 === 1) {
|
|
this.__corner = i;
|
|
return i;
|
|
}
|
|
}
|
|
return false;
|
|
},
|
|
|
|
/**
|
|
* Sets the coordinates of the draggable boxes in the corners of
|
|
* the image used to scale/rotate it.
|
|
* @private
|
|
*/
|
|
_setCornerCoords: function() {
|
|
var coords = this.oCoords,
|
|
theta = degreesToRadians(this.angle),
|
|
newTheta = degreesToRadians(45 - this.angle),
|
|
cornerHypotenuse = Math.sqrt(2 * Math.pow(this.cornerSize, 2)) / 2,
|
|
cosHalfOffset = cornerHypotenuse * Math.cos(newTheta),
|
|
sinHalfOffset = cornerHypotenuse * Math.sin(newTheta),
|
|
sinTh = Math.sin(theta),
|
|
cosTh = Math.cos(theta);
|
|
|
|
coords.tl.corner = {
|
|
tl: {
|
|
x: coords.tl.x - sinHalfOffset,
|
|
y: coords.tl.y - cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.tl.x + cosHalfOffset,
|
|
y: coords.tl.y - sinHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.tl.x - cosHalfOffset,
|
|
y: coords.tl.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.tl.x + sinHalfOffset,
|
|
y: coords.tl.y + cosHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.tr.corner = {
|
|
tl: {
|
|
x: coords.tr.x - sinHalfOffset,
|
|
y: coords.tr.y - cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.tr.x + cosHalfOffset,
|
|
y: coords.tr.y - sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.tr.x + sinHalfOffset,
|
|
y: coords.tr.y + cosHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.tr.x - cosHalfOffset,
|
|
y: coords.tr.y + sinHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.bl.corner = {
|
|
tl: {
|
|
x: coords.bl.x - sinHalfOffset,
|
|
y: coords.bl.y - cosHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.bl.x - cosHalfOffset,
|
|
y: coords.bl.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.bl.x + sinHalfOffset,
|
|
y: coords.bl.y + cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.bl.x + cosHalfOffset,
|
|
y: coords.bl.y - sinHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.br.corner = {
|
|
tr: {
|
|
x: coords.br.x + cosHalfOffset,
|
|
y: coords.br.y - sinHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.br.x - cosHalfOffset,
|
|
y: coords.br.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.br.x + sinHalfOffset,
|
|
y: coords.br.y + cosHalfOffset
|
|
},
|
|
tl: {
|
|
x: coords.br.x - sinHalfOffset,
|
|
y: coords.br.y - cosHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.ml.corner = {
|
|
tl: {
|
|
x: coords.ml.x - sinHalfOffset,
|
|
y: coords.ml.y - cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.ml.x + cosHalfOffset,
|
|
y: coords.ml.y - sinHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.ml.x - cosHalfOffset,
|
|
y: coords.ml.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.ml.x + sinHalfOffset,
|
|
y: coords.ml.y + cosHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.mt.corner = {
|
|
tl: {
|
|
x: coords.mt.x - sinHalfOffset,
|
|
y: coords.mt.y - cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.mt.x + cosHalfOffset,
|
|
y: coords.mt.y - sinHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.mt.x - cosHalfOffset,
|
|
y: coords.mt.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.mt.x + sinHalfOffset,
|
|
y: coords.mt.y + cosHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.mr.corner = {
|
|
tl: {
|
|
x: coords.mr.x - sinHalfOffset,
|
|
y: coords.mr.y - cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.mr.x + cosHalfOffset,
|
|
y: coords.mr.y - sinHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.mr.x - cosHalfOffset,
|
|
y: coords.mr.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.mr.x + sinHalfOffset,
|
|
y: coords.mr.y + cosHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.mb.corner = {
|
|
tl: {
|
|
x: coords.mb.x - sinHalfOffset,
|
|
y: coords.mb.y - cosHalfOffset
|
|
},
|
|
tr: {
|
|
x: coords.mb.x + cosHalfOffset,
|
|
y: coords.mb.y - sinHalfOffset
|
|
},
|
|
bl: {
|
|
x: coords.mb.x - cosHalfOffset,
|
|
y: coords.mb.y + sinHalfOffset
|
|
},
|
|
br: {
|
|
x: coords.mb.x + sinHalfOffset,
|
|
y: coords.mb.y + cosHalfOffset
|
|
}
|
|
};
|
|
|
|
coords.mtr.corner = {
|
|
tl: {
|
|
x: coords.mtr.x - sinHalfOffset + (sinTh * this.rotatingPointOffset),
|
|
y: coords.mtr.y - cosHalfOffset - (cosTh * this.rotatingPointOffset)
|
|
},
|
|
tr: {
|
|
x: coords.mtr.x + cosHalfOffset + (sinTh * this.rotatingPointOffset),
|
|
y: coords.mtr.y - sinHalfOffset - (cosTh * this.rotatingPointOffset)
|
|
},
|
|
bl: {
|
|
x: coords.mtr.x - cosHalfOffset + (sinTh * this.rotatingPointOffset),
|
|
y: coords.mtr.y + sinHalfOffset - (cosTh * this.rotatingPointOffset)
|
|
},
|
|
br: {
|
|
x: coords.mtr.x + sinHalfOffset + (sinTh * this.rotatingPointOffset),
|
|
y: coords.mtr.y + cosHalfOffset - (cosTh * this.rotatingPointOffset)
|
|
}
|
|
};
|
|
},
|
|
/**
|
|
* Draws borders of an object's bounding box.
|
|
* Requires public properties: width, height
|
|
* Requires public options: padding, borderColor
|
|
* @param {CanvasRenderingContext2D} ctx Context to draw on
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
drawBorders: function(ctx) {
|
|
if (!this.hasBorders) {
|
|
return this;
|
|
}
|
|
|
|
var padding = this.padding,
|
|
padding2 = padding * 2,
|
|
vpt = this.getViewportTransform();
|
|
|
|
ctx.save();
|
|
|
|
ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1;
|
|
ctx.strokeStyle = this.borderColor;
|
|
|
|
var scaleX = 1 / this._constrainScale(this.scaleX),
|
|
scaleY = 1 / this._constrainScale(this.scaleY);
|
|
|
|
ctx.lineWidth = 1 / this.borderScaleFactor;
|
|
|
|
var w = this.getWidth(),
|
|
h = this.getHeight(),
|
|
strokeWidth = this.strokeWidth,
|
|
capped = this.strokeLineCap === 'round' || this.strokeLineCap === 'square',
|
|
vLine = this.type === 'line' && this.width === 0,
|
|
hLine = this.type === 'line' && this.height === 0,
|
|
sLine = vLine || hLine,
|
|
strokeW = (capped && hLine) || !sLine,
|
|
strokeH = (capped && vLine) || !sLine;
|
|
|
|
if (vLine) {
|
|
w = strokeWidth / scaleX;
|
|
}
|
|
else if (hLine) {
|
|
h = strokeWidth / scaleY;
|
|
}
|
|
if (strokeW) {
|
|
w += strokeWidth / scaleX;
|
|
}
|
|
if (strokeH) {
|
|
h += strokeWidth / scaleY;
|
|
}
|
|
var wh = fabric.util.transformPoint(new fabric.Point(w, h), vpt, true),
|
|
width = wh.x,
|
|
height = wh.y;
|
|
if (this.group) {
|
|
width = width * this.group.scaleX;
|
|
height = height * this.group.scaleY;
|
|
}
|
|
|
|
ctx.strokeRect(
|
|
~~(-(width / 2) - padding) - 0.5, // offset needed to make lines look sharper
|
|
~~(-(height / 2) - padding) - 0.5,
|
|
~~(width + padding2) + 1, // double offset needed to make lines look sharper
|
|
~~(height + padding2) + 1
|
|
);
|
|
|
|
if (this.hasRotatingPoint && this.isControlVisible('mtr') && !this.get('lockRotation') && this.hasControls) {
|
|
|
|
var rotateHeight = ( -height - (padding * 2)) / 2;
|
|
|
|
ctx.beginPath();
|
|
ctx.moveTo(0, rotateHeight);
|
|
ctx.lineTo(0, rotateHeight - this.rotatingPointOffset);
|
|
ctx.closePath();
|
|
ctx.stroke();
|
|
}
|
|
|
|
ctx.restore();
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Draws corners of an object's bounding box.
|
|
* Requires public properties: width, height
|
|
* Requires public options: cornerSize, padding
|
|
* @param {CanvasRenderingContext2D} ctx Context to draw on
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
drawControls: function(ctx) {
|
|
if (!this.hasControls) {
|
|
return this;
|
|
}
|
|
|
|
var size = this.cornerSize,
|
|
size2 = size / 2,
|
|
vpt = this.getViewportTransform(),
|
|
strokeWidth = this.strokeWidth,
|
|
w = this.width,
|
|
h = this.height,
|
|
capped = this.strokeLineCap === 'round' || this.strokeLineCap === 'square',
|
|
vLine = this.type === 'line' && this.width === 0,
|
|
hLine = this.type === 'line' && this.height === 0,
|
|
sLine = vLine || hLine,
|
|
strokeW = (capped && hLine) || !sLine,
|
|
strokeH = (capped && vLine) || !sLine;
|
|
|
|
if (vLine) {
|
|
w = strokeWidth;
|
|
}
|
|
else if (hLine) {
|
|
h = strokeWidth;
|
|
}
|
|
if (strokeW) {
|
|
w += strokeWidth;
|
|
}
|
|
if (strokeH) {
|
|
h += strokeWidth;
|
|
}
|
|
w *= this.scaleX;
|
|
h *= this.scaleY;
|
|
|
|
var wh = fabric.util.transformPoint(new fabric.Point(w, h), vpt, true),
|
|
width = wh.x,
|
|
height = wh.y,
|
|
left = -(width / 2),
|
|
top = -(height / 2),
|
|
padding = this.padding,
|
|
scaleOffset = size2,
|
|
scaleOffsetSize = size2 - size,
|
|
methodName = this.transparentCorners ? 'strokeRect' : 'fillRect';
|
|
|
|
ctx.save();
|
|
|
|
ctx.lineWidth = 1;
|
|
|
|
ctx.globalAlpha = this.isMoving ? this.borderOpacityWhenMoving : 1;
|
|
ctx.strokeStyle = ctx.fillStyle = this.cornerColor;
|
|
|
|
// top-left
|
|
this._drawControl('tl', ctx, methodName,
|
|
left - scaleOffset - padding,
|
|
top - scaleOffset - padding);
|
|
|
|
// top-right
|
|
this._drawControl('tr', ctx, methodName,
|
|
left + width - scaleOffset + padding,
|
|
top - scaleOffset - padding);
|
|
|
|
// bottom-left
|
|
this._drawControl('bl', ctx, methodName,
|
|
left - scaleOffset - padding,
|
|
top + height + scaleOffsetSize + padding);
|
|
|
|
// bottom-right
|
|
this._drawControl('br', ctx, methodName,
|
|
left + width + scaleOffsetSize + padding,
|
|
top + height + scaleOffsetSize + padding);
|
|
|
|
if (!this.get('lockUniScaling')) {
|
|
|
|
// middle-top
|
|
this._drawControl('mt', ctx, methodName,
|
|
left + width/2 - scaleOffset,
|
|
top - scaleOffset - padding);
|
|
|
|
// middle-bottom
|
|
this._drawControl('mb', ctx, methodName,
|
|
left + width/2 - scaleOffset,
|
|
top + height + scaleOffsetSize + padding);
|
|
|
|
// middle-right
|
|
this._drawControl('mr', ctx, methodName,
|
|
left + width + scaleOffsetSize + padding,
|
|
top + height/2 - scaleOffset);
|
|
|
|
// middle-left
|
|
this._drawControl('ml', ctx, methodName,
|
|
left - scaleOffset - padding,
|
|
top + height/2 - scaleOffset);
|
|
}
|
|
|
|
// middle-top-rotate
|
|
if (this.hasRotatingPoint) {
|
|
this._drawControl('mtr', ctx, methodName,
|
|
left + width/2 - scaleOffset,
|
|
top - this.rotatingPointOffset - this.cornerSize/2 - padding);
|
|
}
|
|
|
|
ctx.restore();
|
|
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_drawControl: function(control, ctx, methodName, left, top) {
|
|
var size = this.cornerSize;
|
|
|
|
if (this.isControlVisible(control)) {
|
|
isVML() || this.transparentCorners || ctx.clearRect(left, top, size, size);
|
|
ctx[methodName](left, top, size, size);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Returns true if the specified control is visible, false otherwise.
|
|
* @param {String} controlName The name of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.
|
|
* @returns {Boolean} true if the specified control is visible, false otherwise
|
|
*/
|
|
isControlVisible: function(controlName) {
|
|
return this._getControlsVisibility()[controlName];
|
|
},
|
|
|
|
/**
|
|
* Sets the visibility of the specified control.
|
|
* @param {String} controlName The name of the control. Possible values are 'tl', 'tr', 'br', 'bl', 'ml', 'mt', 'mr', 'mb', 'mtr'.
|
|
* @param {Boolean} visible true to set the specified control visible, false otherwise
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
setControlVisible: function(controlName, visible) {
|
|
this._getControlsVisibility()[controlName] = visible;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets the visibility state of object controls.
|
|
* @param {Object} [options] Options object
|
|
* @param {Boolean} [options.bl] true to enable the bottom-left control, false to disable it
|
|
* @param {Boolean} [options.br] true to enable the bottom-right control, false to disable it
|
|
* @param {Boolean} [options.mb] true to enable the middle-bottom control, false to disable it
|
|
* @param {Boolean} [options.ml] true to enable the middle-left control, false to disable it
|
|
* @param {Boolean} [options.mr] true to enable the middle-right control, false to disable it
|
|
* @param {Boolean} [options.mt] true to enable the middle-top control, false to disable it
|
|
* @param {Boolean} [options.tl] true to enable the top-left control, false to disable it
|
|
* @param {Boolean} [options.tr] true to enable the top-right control, false to disable it
|
|
* @param {Boolean} [options.mtr] true to enable the middle-top-rotate control, false to disable it
|
|
* @return {fabric.Object} thisArg
|
|
* @chainable
|
|
*/
|
|
setControlsVisibility: function(options) {
|
|
options || (options = { });
|
|
|
|
for (var p in options) {
|
|
this.setControlVisible(p, options[p]);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Returns the instance of the control visibility set for this object.
|
|
* @private
|
|
* @returns {Object}
|
|
*/
|
|
_getControlsVisibility: function() {
|
|
if (!this._controlsVisibility) {
|
|
this._controlsVisibility = {
|
|
tl: true,
|
|
tr: true,
|
|
br: true,
|
|
bl: true,
|
|
ml: true,
|
|
mt: true,
|
|
mr: true,
|
|
mb: true,
|
|
mtr: true
|
|
};
|
|
}
|
|
return this._controlsVisibility;
|
|
}
|
|
});
|
|
})();
|