75 lines
1.9 KiB
JavaScript
75 lines
1.9 KiB
JavaScript
import { observes } from "discourse-common/utils/decorators";
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import { createPreviewComponent, drawHeader, LOREM } from "wizard/lib/preview";
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export default createPreviewComponent(375, 100, {
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image: null,
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@observes("field.value")
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imageChanged() {
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this.reload();
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},
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images() {
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return { image: this.get("field.value") };
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},
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paint(ctx, colors, font, width, height) {
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const headerHeight = height / 2;
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drawHeader(ctx, colors, width, headerHeight);
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const image = this.image;
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const headerMargin = headerHeight * 0.2;
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const maxWidth = headerHeight - headerMargin * 2.0;
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let imageWidth = image.width;
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let ratio = 1.0;
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if (imageWidth > maxWidth) {
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ratio = maxWidth / imageWidth;
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imageWidth = maxWidth;
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}
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this.scaleImage(
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image,
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headerMargin,
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headerMargin,
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imageWidth,
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image.height * ratio
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);
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const afterLogo = headerMargin * 1.7 + imageWidth;
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const fontSize = Math.round(headerHeight * 0.4);
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ctx.font = `Bold ${fontSize}px '${font}'`;
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ctx.fillStyle = colors.primary;
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const title = LOREM.substring(0, 27);
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ctx.fillText(
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title,
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headerMargin + imageWidth,
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headerHeight - fontSize * 1.1
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);
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const category = this.categories()[0];
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const badgeSize = height / 13.0;
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ctx.beginPath();
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ctx.fillStyle = category.color;
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ctx.rect(afterLogo, headerHeight * 0.7, badgeSize, badgeSize);
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ctx.fill();
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ctx.font = `Bold ${badgeSize * 1.2}px '${font}'`;
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ctx.fillStyle = colors.primary;
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ctx.fillText(
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category.name,
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afterLogo + badgeSize * 1.5,
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headerHeight * 0.7 + badgeSize * 0.9
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);
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const LINE_HEIGHT = 12;
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ctx.font = `${LINE_HEIGHT}px '${font}'`;
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const lines = LOREM.split("\n");
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for (let i = 0; i < 10; i++) {
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const line = height * 0.55 + i * (LINE_HEIGHT * 1.5);
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ctx.fillText(lines[i], afterLogo, line);
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}
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},
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});
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