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Canvas cursor draw - do not use save and restore. (#9)

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This commit is contained in:
Miroslav Šedivý
2022-08-25 00:14:47 +02:00
committed by GitHub
parent bada3d1243
commit 9a77f6adea
3 changed files with 27 additions and 28 deletions
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17
src/page/main.vue
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@ -514,7 +514,6 @@
y -= 4
// draw arrow path
ctx.save()
const arrowPath = new Path2D('M5 5L19 12.5L12.3286 14.465L8.29412 20L5 5Z')
ctx.globalAlpha = 0.5
ctx.translate(x, y)
@ -527,15 +526,12 @@
ctx.lineJoin = 'round'
ctx.strokeStyle = colorDark
ctx.stroke(arrowPath)
ctx.restore()
ctx.save()
// draw cursor tag
if (cursorTag) {
x += 20 // box margin x
y += 20 // box margin y
const x = 20 // box margin x
const y = 20 // box margin y
ctx.save()
ctx.globalAlpha = 0.5
ctx.font = '10px Arial, sans-serif'
ctx.textBaseline = 'top'
@ -547,7 +543,6 @@
ctx.shadowBlur = 0
ctx.fillStyle = 'white'
ctx.fillText(cursorTag, x, y)
ctx.restore()
}
},
)
@ -576,7 +571,6 @@
y -= 4
// draw arrow path
ctx.save()
const arrowPath = new Path2D('M5 5L26 16.5L15.9929 19.513L9.94118 28L5 5Z')
ctx.translate(x, y)
ctx.fillStyle = colorLight
@ -588,7 +582,6 @@
ctx.lineJoin = 'round'
ctx.strokeStyle = colorDark
ctx.stroke(arrowPath)
ctx.restore()
// draw cursor tag
if (cursorTag) {
@ -596,15 +589,14 @@
const boxPaddingX = 9
const boxPaddingY = 6
x += 22 // box margin x
y += 28 // box margin y
const x = 22 // box margin x
const y = 28 // box margin y
// prepare tag text
ctx.font = '500 ' + fontSize + 'px Roboto, sans-serif'
ctx.textBaseline = 'ideographic'
// create tag container
ctx.save()
const txtWidth = ctx.measureText(cursorTag).width
const w = txtWidth + boxPaddingX * 2
const h = fontSize + boxPaddingY * 2
@ -618,7 +610,6 @@
ctx.closePath()
ctx.fillStyle = colorDark
ctx.fill()
ctx.restore()
// fill in tag text
ctx.fillStyle = fontColor