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74 lines
2.5 KiB
74 lines
2.5 KiB
import NodeBase from '../util/NodeBase'
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class ShapeBase extends NodeBase {
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constructor(options, body, labelModule) {
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super(options, body, labelModule)
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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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this.radius = 0.5*this.width;
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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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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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// 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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if (this.options.label !== undefined) {
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let yLabel = y + 0.5 * this.height + 3; // the + 3 is to offset it a bit below the node.
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this.labelModule.draw(ctx, x, yLabel, selected, 'hanging');
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}
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this.updateBoundingBox(x,y);
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}
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updateBoundingBox(x,y) {
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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 && this.labelModule.size.width > 0) {
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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 + 3);
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}
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}
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}
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export default ShapeBase;
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