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120 lines
3.6 KiB
120 lines
3.6 KiB
import NodeBase from '../util/NodeBase'
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class CircleImageBase extends NodeBase {
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constructor(options, body, labelModule) {
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super(options, body, labelModule);
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this.labelOffset = 0;
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this.imageLoaded = false;
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}
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/**
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* This function resizes the image by the options size when the image has not yet loaded. If the image has loaded, we
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* force the update of the size again.
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*
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* @private
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*/
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_resizeImage() {
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let force = false;
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if (!this.imageObj.width || !this.imageObj.height) { // undefined or 0
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this.imageLoaded = false;
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}
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else if (this.imageLoaded === false) {
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this.imageLoaded = true;
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force = true;
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}
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if (!this.width || !this.height || force === true) { // undefined or 0
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var width, height, ratio;
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if (this.imageObj.width && this.imageObj.height) { // not undefined or 0
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width = 0;
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height = 0;
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}
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if (this.imageObj.width > this.imageObj.height) {
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ratio = this.imageObj.width / this.imageObj.height;
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width = this.options.size * 2 * ratio || this.imageObj.width;
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height = this.options.size * 2 || this.imageObj.height;
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}
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else {
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if (this.imageObj.width && this.imageObj.height) { // not undefined or 0
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ratio = this.imageObj.height / this.imageObj.width;
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}
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else {
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ratio = 1;
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}
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width = this.options.size * 2 || this.imageObj.width;
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height = this.options.size * 2 * ratio || this.imageObj.height;
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}
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this.width = width;
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this.height = height;
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this.radius = 0.5 * this.width;
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}
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}
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_drawRawCircle(ctx, x, y, selected, hover, size) {
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var borderWidth = this.options.borderWidth;
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var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
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ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;
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ctx.lineWidth = (selected ? selectionLineWidth : borderWidth);
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ctx.lineWidth *= this.networkScaleInv;
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ctx.lineWidth = Math.min(this.width, ctx.lineWidth);
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ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
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ctx.circle(x, y, size);
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// draw shadow if enabled
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this.enableShadow(ctx);
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// draw the background
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ctx.fill();
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// disable shadows for other elements.
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this.disableShadow(ctx);
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//draw dashed border if enabled, save and restore is required for firefox not to crash on unix.
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ctx.save();
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this.enableBorderDashes(ctx);
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//draw the border
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ctx.stroke();
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//disable dashed border for other elements
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this.disableBorderDashes(ctx);
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ctx.restore();
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}
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_drawImageAtPosition(ctx) {
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if (this.imageObj.width != 0) {
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// draw the image
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ctx.globalAlpha = 1.0;
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// draw shadow if enabled
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this.enableShadow(ctx);
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// draw image
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ctx.drawImage(this.imageObj, this.left, this.top, this.width, this.height);
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// disable shadows for other elements.
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this.disableShadow(ctx);
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}
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}
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_drawImageLabel(ctx, x, y, selected) {
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var yLabel;
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var offset = 0;
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if (this.height !== undefined) {
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offset = this.height * 0.5;
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var labelDimensions = this.labelModule.getTextSize(ctx);
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if (labelDimensions.lineCount >= 1) {
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offset += labelDimensions.height / 2;
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}
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}
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yLabel = y + offset;
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if (this.options.label) {
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this.labelOffset = offset;
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}
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this.labelModule.draw(ctx, x, yLabel, selected, 'hanging');
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}
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}
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export default CircleImageBase;
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