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74 lines
2.4 KiB
74 lines
2.4 KiB
'use strict';
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import CircleImageBase from '../util/CircleImageBase'
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class CircularImage extends CircleImageBase {
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constructor (options, body, labelModule, imageObj, imageObjAlt) {
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super(options, body, labelModule);
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this.setImages(imageObj, imageObjAlt);
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}
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resize(ctx, selected = this.selected, hover = this.hover) {
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var imageAbsent = (this.imageObj.src === undefined) ||
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(this.imageObj.width === undefined) ||
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(this.imageObj.height === undefined);
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if (imageAbsent) {
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var diameter = this.options.size * 2;
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this.width = diameter;
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this.height = diameter;
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this.radius = 0.5*this.width;
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return;
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}
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// At this point, an image is present, i.e. this.imageObj is valid.
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if (this.needsRefresh(selected, hover)) {
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this._resizeImage();
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}
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}
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draw(ctx, x, y, selected, hover, values) {
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this.switchImages(selected);
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this.resize();
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this.left = x - this.width / 2;
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this.top = y - this.height / 2;
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// draw the background circle. IMPORTANT: the stroke in this method is used by the clip method below.
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this._drawRawCircle(ctx, x, y, values);
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// now we draw in the circle, we save so we can revert the clip operation after drawing.
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ctx.save();
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// clip is used to use the stroke in drawRawCircle as an area that we can draw in.
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ctx.clip();
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// draw the image
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this._drawImageAtPosition(ctx, values);
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// restore so we can again draw on the full canvas
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ctx.restore();
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this._drawImageLabel(ctx, x, y, selected, hover);
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this.updateBoundingBox(x,y);
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}
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// TODO: compare with Circle.updateBoundingBox(), consolidate? More stuff is happening here
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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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// TODO: compare with Image.updateBoundingBox(), consolidate?
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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.labelOffset);
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}
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distanceToBorder(ctx, angle) {
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this.resize(ctx);
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return this.width * 0.5;
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}
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}
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export default CircularImage;
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