plainheart commented on a change in pull request #14393:
URL: https://github.com/apache/echarts/pull/14393#discussion_r663622792
##########
File path: src/component/tooltip/TooltipHTMLContent.ts
##########
@@ -81,15 +85,15 @@ function assembleArrow(
transformStyle += `translateX(-50%) rotate(${arrowPos === 'top' ? 225
: 45}deg)`;
}
- const borderStyle = `${borderColor} solid 1px;`;
+ const borderStyle = `${borderColor} solid ${borderWidth}px;`;
const styleCss = [
- 'position:absolute;width:10px;height:10px;',
+ `position:absolute;width:${borderWidth}px;height:${borderWidth}px;`,
Review comment:
It may be not appropriate to use `borderWidth` as arrow size, but
perhaps we can multiply it by a factor. And the calculated `arrowOffset` seems
to be not accurate enough. Here is my humble opinion about the calculation,
```diff
src/component/tooltip/TooltipHTMLContent.ts
@@ -73,22 +73,27 @@ function assembleArrow(
borderColor = convertToColorString(borderColor);
const arrowPos = mirrorPos(arrowPosition);
- const arrowOffset = Math.round(Math.sqrt(2 * borderWidth * borderWidth)
/ 2) + borderWidth;
- let positionStyle = `${arrowPos}:-${arrowOffset}px;`;
+ const arrowSize = Math.max(Math.round(borderWidth) * 1.5, 6);
+ let positionStyle = '';
let transformStyle = CSS_TRANSFORM_VENDOR + ':';
+ let rotateDeg = 0;
if (indexOf(['left', 'right'], arrowPos) > -1) {
positionStyle += 'top:50%';
- transformStyle += `translateY(-50%) rotate(${arrowPos === 'left' ?
-225 : -45}deg)`;
+ transformStyle += `translateY(-50%) rotate(${rotateDeg = arrowPos
=== 'left' ? -225 : -45}deg)`;
}
else {
positionStyle += 'left:50%';
- transformStyle += `translateX(-50%) rotate(${arrowPos === 'top' ?
225 : 45}deg)`;
+ transformStyle += `translateX(-50%) rotate(${rotateDeg = arrowPos
=== 'top' ? 225 : 45}deg)`;
}
+ const arrowOffset = Math.round((borderWidth * Math.SQRT2 + arrowSize /
2) * 100) / 100;
+ positionStyle += `;${arrowPos}:-${arrowOffset}px`;
+ const margin = Math.round(borderWidth / 2 *
Math.abs(Math.cos(rotateDeg)) * 100) / 100;
const borderStyle = `${borderColor} solid ${borderWidth}px;`;
const styleCss = [
- `position:absolute;width:${borderWidth}px;height:${borderWidth}px;`,
+ `position:absolute;width:${arrowSize}px;height:${arrowSize}px;`,
`${positionStyle};${transformStyle};`,
+ `margin-${arrowPos}:${margin}px;`,
`border-bottom:${borderStyle}`,
`border-right:${borderStyle}`,
`background-color:${backgroundColor};`
```
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