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fix(Controls): allow for smooth scaling fo text at any zoom level #10186

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merged 4 commits into from
Oct 3, 2024
Merged

fix(Controls): allow for smooth scaling fo text at any zoom level #10186

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3a37c46
removed Math.ceil call when calculating new width in resize handler
Soldier-B Sep 27, 2024
049d329
prevent newWidth from being less than 1
Soldier-B Oct 3, 2024
ff95419
added a test for decimal
asturur Oct 3, 2024
12b8e1a
changelog
asturur Oct 3, 2024
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5 changes: 2 additions & 3 deletions src/controls/changeWidth.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -40,9 +40,8 @@ export const changeObjectWidth: TransformActionHandler = (
target.strokeWidth / (target.strokeUniform ? target.scaleX : 1),
multiplier = isTransformCentered(transform) ? 2 : 1,
oldWidth = target.width,
newWidth = Math.ceil(
Math.abs((localPoint.x * multiplier) / target.scaleX) - strokePadding,
);
newWidth =
Math.abs((localPoint.x * multiplier) / target.scaleX) - strokePadding;
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Since this was avoiding newWidth to go under 1, could you change the line below to
target.set('width', Math.max(newWidth, 1)); ?

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Also please check if there is a test for changeWidth and extend it to cover this change.

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@asturur Sure I can make that change but I just want to make sure it's necessary as versions before v6 didn't have that restriction.
Also, I'm not familiar with how the tests are set up but there doesn't appear to be any existing test that run against the changeWidth function. I did try making changes locally to the controls_handlers test script but it's unclear to me how I'm supposed to reference the changeWidth function there.

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if the previous code was using Math.ceil, it means that any float that was smaller than 1 was rounded to 1.
As a consequence newWidth was never smaller than 1.
Now your changes remove that to obtain smoothness at higher zoom levels but that 1 barrier should stay, and the line below is a perfect place to reimplement it.

A test i can add when the code changes are done

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I've just committed that change.

target.set('width', Math.max(newWidth, 0));
// check against actual target width in case `newWidth` was rejected
return oldWidth !== target.width;
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