Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: b3809e07dc65e5678706c3ee334ca12930ebf129
      
https://github.com/WebKit/WebKit/commit/b3809e07dc65e5678706c3ee334ca12930ebf129
  Author: Rob Buis <[email protected]>
  Date:   2025-01-04 (Sat, 04 Jan 2025)

  Changed paths:
    M LayoutTests/fast/canvas/canvas-measureText-2-expected.txt
    M LayoutTests/fast/canvas/canvas-measureText-2.html
    M 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt
    A 
LayoutTests/platform/glib/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt
    A 
LayoutTests/platform/glib/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt
    A 
LayoutTests/platform/glib/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt
    A 
LayoutTests/platform/ios/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt
    A 
LayoutTests/platform/ios/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt
    A 
LayoutTests/platform/ios/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt
    M Source/WebCore/html/canvas/CanvasRenderingContext2DBase.cpp
    M Source/WebCore/platform/graphics/FontCascade.cpp

  Log Message:
  -----------
  .measureText() returns TextMetrics object with rounded values for bounding box
https://bugs.webkit.org/show_bug.cgi?id=240213

Reviewed by Said Abou-Hallawa.

Stop rounding intermediate calculations to integer values, potentially ending 
up with float values for TextMetrics bounding box.

Note that iOS/glib platforms seem to always round ascent/descent to integer 
values so have some different test results. Stopping the rounding
there would lead to a big amount of needed rebaselines, so it is left out of 
this PR.

* LayoutTests/fast/canvas/canvas-measureText-2-expected.txt:
* LayoutTests/fast/canvas/canvas-measureText-2.html:
* 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt:
* 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt:
* 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt:
* 
LayoutTests/platform/glib/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt:
 Copied from 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt.
* 
LayoutTests/platform/glib/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt:
 Copied from 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt.
* 
LayoutTests/platform/glib/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt:
 Copied from 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt.
* 
LayoutTests/platform/ios/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt:
 Copied from 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/element/text/2d.text.measure.baselines-expected.txt.
* 
LayoutTests/platform/ios/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt:
 Copied from 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines-expected.txt.
* 
LayoutTests/platform/ios/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt:
 Copied from 
LayoutTests/imported/w3c/web-platform-tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker-expected.txt.
* Source/WebCore/html/canvas/CanvasRenderingContext2DBase.cpp:
(WebCore::CanvasRenderingContext2DBase::measureTextInternal):
* Source/WebCore/platform/graphics/FontCascade.cpp:
(WebCore::FontCascade::widthForSimpleText const):
(WebCore::FontCascade::widthForComplexText const):

Canonical link: https://commits.webkit.org/288439@main



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