vis.js is a dynamic, browser-based visualization library
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import NodeBase from '../util/NodeBase'
class CircleImageBase extends NodeBase {
constructor(options, body, labelModule) {
super(options, body, labelModule);
this.labelOffset = 0;
}
_resizeImage() {
if (!this.width || !this.height) { // undefined or 0
var width, height, ratio;
if (this.imageObj.width && this.imageObj.height) { // not undefined or 0
width = 0;
height = 0;
}
if (this.imageObj.width > this.imageObj.height) {
ratio = this.imageObj.width / this.imageObj.height;
width = this.options.size * 2 * ratio || this.imageObj.width;
height = this.options.size * 2 || this.imageObj.height;
}
else {
ratio = this.imageObj.height / this.imageObj.width;
width = this.options.size * 2 || this.imageObj.width;
height = this.options.size * 2 * ratio || this.imageObj.height;
}
this.width = width;
this.height = height;
}
}
_drawRawCircle(ctx, x, y, selected, hover, size) {
var borderWidth = this.options.borderWidth;
var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;
ctx.lineWidth = (selected ? selectionLineWidth : borderWidth);
ctx.lineWidth *= this.networkScaleInv;
ctx.lineWidth = Math.min(this.width, ctx.lineWidth);
ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
ctx.circle(x, y, size);
// draw shadow if enabled
this.enableShadow(ctx);
ctx.fill();
// disable shadows for other elements.
this.disableShadow(ctx);
ctx.stroke();
}
_drawImageAtPosition(ctx) {
if (this.imageObj.width != 0) {
// draw the image
ctx.globalAlpha = 1.0;
// draw shadow if enabled
this.enableShadow(ctx);
ctx.drawImage(this.imageObj, this.left, this.top, this.width, this.height);
// disable shadows for other elements.
this.disableShadow(ctx);
}
}
_drawImageLabel(ctx, x, y, selected) {
var yLabel;
var offset = 0;
if (this.height !== undefined) {
offset = this.height * 0.5;
var labelDimensions = this.labelModule.getTextSize(ctx);
if (labelDimensions.lineCount >= 1) {
offset += labelDimensions.height / 2;
}
}
yLabel = y + offset;
if (this.options.label) {
this.labelOffset = offset;
}
this.labelModule.draw(ctx, x, yLabel, selected, 'hanging');
}
}
export default CircleImageBase;