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83 lines
2.8 KiB
83 lines
2.8 KiB
'use strict';
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import NodeBase from '../util/NodeBase'
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class Box 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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resize(ctx, selected) {
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if (this.width === undefined) {
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let margin = 5;
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let textSize = this.labelModule.getTextSize(ctx,selected);
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this.width = textSize.width + 2 * margin;
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this.height = textSize.height + 2 * margin;
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this.radius = 0.5*this.width;
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}
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}
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draw(ctx, x, y, selected, hover) {
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this.resize(ctx, selected);
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this.left = x - this.width / 2;
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this.top = y - this.height / 2;
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let borderWidth = this.options.borderWidth;
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let 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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let borderRadius = this.options.shapeProperties.borderRadius; // only effective for box
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ctx.roundRect(this.left, this.top, this.width, this.height, borderRadius);
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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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// if borders are zero width, they will be drawn with width 1 by default. This prevents that
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if (borderWidth > 0) {
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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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}
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ctx.restore();
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this.updateBoundingBox(x,y,ctx,selected);
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this.labelModule.draw(ctx, x, y, selected);
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}
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updateBoundingBox(x,y, ctx, selected) {
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this.resize(ctx, selected);
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this.left = x - this.width * 0.5;
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this.top = y - this.height * 0.5;
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let borderRadius = this.options.shapeProperties.borderRadius; // only effective for box
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this.boundingBox.left = this.left - borderRadius;
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this.boundingBox.top = this.top - borderRadius;
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this.boundingBox.bottom = this.top + this.height + borderRadius;
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this.boundingBox.right = this.left + this.width + borderRadius;
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}
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distanceToBorder(ctx, angle) {
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this.resize(ctx);
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let borderWidth = this.options.borderWidth;
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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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}
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export default Box;
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