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ui-speedspacechart: highlight the 4 steps before and after the cursor #881

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merged 1 commit into from
Feb 10, 2025
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ui-speedspacechart: highlight the 4 steps before and after the cursor #881

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30 changes: 28 additions & 2 deletions ui-speedspacechart/src/components/helpers/drawElements/steps.ts
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import type { DrawFunctionParams } from '../../../types/chartTypes';
import { GREY_50, GREY_80, LIGHT_BLUE, MARGINS } from '../../const';
import { BLACK, GREY_50, GREY_80, LIGHT_BLUE, MARGINS } from '../../const';
import {
clearCanvas,
positionToPosX,
Expand Down Expand Up @@ -73,6 +73,23 @@ export const drawSteps = ({ ctx, width, height, store }: DrawFunctionParams) =>

// Text
const filteredTextStops = getDisplayedStops(filteredStops, ratioX, width, maxPosition, 25);
const prevSteps: (typeof filteredTextStops)[0][] = [];
const nextSteps: (typeof filteredTextStops)[0][] = [];

filteredTextStops.forEach((stop) => {
const posX = positionToPosX(stop.position.start, maxPosition, width, ratioX);
if (cursor.x && posX < cursor.x + MARGIN_LEFT - leftOffset) {
prevSteps.push(stop);
if (prevSteps.length > 4) prevSteps.shift();
}

if (cursor.x && posX > cursor.x + MARGIN_LEFT - leftOffset) {
if (nextSteps.length < 4) {
nextSteps.push(stop);
}
}
});

filteredTextStops.forEach(({ position, value }) => {
if (snappedStop && position.start === snappedStop.position.start) {
return;
Expand All @@ -87,7 +104,16 @@ export const drawSteps = ({ ctx, width, height, store }: DrawFunctionParams) =>
ctx.translate(posX, posY);
ctx.rotate((-40 * Math.PI) / 180); // -40 degrees in radians

ctx.fillStyle = GREY_80.alpha(0.2).hex();
// Check if the current step is within the 4 previous or 4 next steps
if (
prevSteps.some((step) => step.position.start === position.start) ||
nextSteps.some((step) => step.position.start === position.start)
) {
ctx.fillStyle = BLACK.hex();
} else {
ctx.fillStyle = GREY_80.alpha(0.2).hex();
}

ctx.font = 'normal 12px IBM Plex Sans';
ctx.textAlign = 'left';

Expand Down