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126 lines
4.0 KiB
126 lines
4.0 KiB
/**
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* Created by Alex on 3/19/2015.
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*/
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class NodeUtil {
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constructor(options, body, labelModule) {
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this.body = body;
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this.labelModule = labelModule;
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this.setOptions(options);
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this.top = undefined;
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this.left = undefined;
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this.height = undefined;
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this.height = undefined;
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this.boundingBox = {top: 0, left: 0, right: 0, bottom: 0};
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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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ctx.fill();
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ctx.stroke();
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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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ctx.drawImage(this.imageObj, this.left, this.top, this.width, this.height);
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}
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}
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_distanceToBorder(angle) {
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var borderWidth = 1;
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return Math.min(
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Math.abs(this.width / 2 / Math.cos(angle)),
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Math.abs(this.height / 2 / Math.sin(angle))) + borderWidth;
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}
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_resizeShape() {
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if (this.width === undefined) {
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var size = 2 * this.options.size;
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this.width = size;
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this.height = size;
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}
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}
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_drawShape(ctx, shape, sizeMultiplier, x, y, selected, hover) {
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this._resizeShape();
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this.left = x - this.width / 2;
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this.top = y - this.height / 2;
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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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// choose draw method depending on the shape
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switch (shape) {
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case 'dot':
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sizeMultiplier = 2;
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break;
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case 'square':
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sizeMultiplier = 2;
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break;
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case 'triangle':
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sizeMultiplier = 3;
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break;
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case 'triangleDown':
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sizeMultiplier = 3;
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break;
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case 'star':
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sizeMultiplier = 4;
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break;
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}
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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.body.view.scale;
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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[shape](x, y, this.options.size);
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ctx.fill();
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ctx.stroke();
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this.boundingBox.top = y - this.options.size;
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this.boundingBox.left = x - this.options.size;
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this.boundingBox.right = x + this.options.size;
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this.boundingBox.bottom = y + this.options.size;
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if (this.options.label!== undefined) {
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this.labelModule.draw(ctx, x, y + 0.5* this.height, selected, 'hanging');
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this.boundingBox.left = Math.min(this.boundingBox.left, this.labelModule.size.left);
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this.boundingBox.right = Math.max(this.boundingBox.right, this.labelModule.size.left + this.labelModule.size.width);
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this.boundingBox.bottom = Math.max(this.boundingBox.bottom, this.boundingBox.bottom + this.labelModule.size.height);
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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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offset += 3;
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}
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}
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yLabel = y + offset;
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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 NodeUtil;
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