tupali/librerias/gantt/code/es-modules/annotations/eventEmitterMixin.js
2020-05-23 15:45:54 -05:00

213 lines
7.0 KiB
JavaScript

/* *
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
import H from '../parts/Globals.js';
import U from '../parts/Utilities.js';
var addEvent = U.addEvent, fireEvent = U.fireEvent, inArray = U.inArray, objectEach = U.objectEach, pick = U.pick, removeEvent = U.removeEvent;
/* eslint-disable valid-jsdoc */
/**
* It provides methods for:
* - adding and handling DOM events and a drag event,
* - mapping a mouse move event to the distance between two following events.
* The units of the distance are specific to a transformation,
* e.g. for rotation they are radians, for scaling they are scale factors.
*
* @private
* @mixin
* @memberOf Annotation
*/
var eventEmitterMixin = {
/**
* Add emitter events.
*/
addEvents: function () {
var emitter = this, addMouseDownEvent = function (element) {
addEvent(element, 'mousedown', function (e) {
emitter.onMouseDown(e);
});
};
addMouseDownEvent(this.graphic.element);
(emitter.labels || []).forEach(function (label) {
if (label.options.useHTML && label.graphic.text) {
// Mousedown event bound to HTML element (#13070).
addMouseDownEvent(label.graphic.text.element);
}
});
objectEach(emitter.options.events, function (event, type) {
var eventHandler = function (e) {
if (type !== 'click' || !emitter.cancelClick) {
event.call(emitter, emitter.chart.pointer.normalize(e), emitter.target);
}
};
if (inArray(type, emitter.nonDOMEvents || []) === -1) {
emitter.graphic.on(type, eventHandler);
}
else {
addEvent(emitter, type, eventHandler);
}
});
if (emitter.options.draggable) {
addEvent(emitter, 'drag', emitter.onDrag);
if (!emitter.graphic.renderer.styledMode) {
var cssPointer_1 = {
cursor: {
x: 'ew-resize',
y: 'ns-resize',
xy: 'move'
}[emitter.options.draggable]
};
emitter.graphic.css(cssPointer_1);
(emitter.labels || []).forEach(function (label) {
if (label.options.useHTML && label.graphic.text) {
label.graphic.text.css(cssPointer_1);
}
});
}
}
if (!emitter.isUpdating) {
fireEvent(emitter, 'add');
}
},
/**
* Remove emitter document events.
*/
removeDocEvents: function () {
if (this.removeDrag) {
this.removeDrag = this.removeDrag();
}
if (this.removeMouseUp) {
this.removeMouseUp = this.removeMouseUp();
}
},
/**
* Mouse down handler.
*/
onMouseDown: function (e) {
var emitter = this, pointer = emitter.chart.pointer, prevChartX, prevChartY;
if (e.preventDefault) {
e.preventDefault();
}
// On right click, do nothing:
if (e.button === 2) {
return;
}
e = pointer.normalize(e);
prevChartX = e.chartX;
prevChartY = e.chartY;
emitter.cancelClick = false;
emitter.chart.hasDraggedAnnotation = true;
emitter.removeDrag = addEvent(H.doc, 'mousemove', function (e) {
emitter.hasDragged = true;
e = pointer.normalize(e);
e.prevChartX = prevChartX;
e.prevChartY = prevChartY;
fireEvent(emitter, 'drag', e);
prevChartX = e.chartX;
prevChartY = e.chartY;
});
emitter.removeMouseUp = addEvent(H.doc, 'mouseup', function (e) {
emitter.cancelClick = emitter.hasDragged;
emitter.hasDragged = false;
emitter.chart.hasDraggedAnnotation = false;
// ControlPoints vs Annotation:
fireEvent(pick(emitter.target, emitter), 'afterUpdate');
emitter.onMouseUp(e);
});
},
/**
* Mouse up handler.
*/
onMouseUp: function (_e) {
var chart = this.chart, annotation = this.target || this, annotationsOptions = chart.options.annotations, index = chart.annotations.indexOf(annotation);
this.removeDocEvents();
annotationsOptions[index] = annotation.options;
},
/**
* Drag and drop event. All basic annotations should share this
* capability as well as the extended ones.
*/
onDrag: function (e) {
if (this.chart.isInsidePlot(e.chartX - this.chart.plotLeft, e.chartY - this.chart.plotTop)) {
var translation = this.mouseMoveToTranslation(e);
if (this.options.draggable === 'x') {
translation.y = 0;
}
if (this.options.draggable === 'y') {
translation.x = 0;
}
if (this.points.length) {
this.translate(translation.x, translation.y);
}
else {
this.shapes.forEach(function (shape) {
shape.translate(translation.x, translation.y);
});
this.labels.forEach(function (label) {
label.translate(translation.x, translation.y);
});
}
this.redraw(false);
}
},
/**
* Map mouse move event to the radians.
*/
mouseMoveToRadians: function (e, cx, cy) {
var prevDy = e.prevChartY - cy, prevDx = e.prevChartX - cx, dy = e.chartY - cy, dx = e.chartX - cx, temp;
if (this.chart.inverted) {
temp = prevDx;
prevDx = prevDy;
prevDy = temp;
temp = dx;
dx = dy;
dy = temp;
}
return Math.atan2(dy, dx) - Math.atan2(prevDy, prevDx);
},
/**
* Map mouse move event to the distance between two following events.
*/
mouseMoveToTranslation: function (e) {
var dx = e.chartX - e.prevChartX, dy = e.chartY - e.prevChartY, temp;
if (this.chart.inverted) {
temp = dy;
dy = dx;
dx = temp;
}
return {
x: dx,
y: dy
};
},
/**
* Map mouse move to the scale factors.
*
* @param {Object} e event
* @param {number} cx center x
* @param {number} cy center y
**/
mouseMoveToScale: function (e, cx, cy) {
var prevDx = e.prevChartX - cx, prevDy = e.prevChartY - cy, dx = e.chartX - cx, dy = e.chartY - cy, sx = (dx || 1) / (prevDx || 1), sy = (dy || 1) / (prevDy || 1), temp;
if (this.chart.inverted) {
temp = sy;
sy = sx;
sx = temp;
}
return {
x: sx,
y: sy
};
},
/**
* Destroy the event emitter.
*/
destroy: function () {
this.removeDocEvents();
removeEvent(this);
this.hcEvents = null;
}
};
export default eventEmitterMixin;