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5883a6ca10
Fixes https://github.com/flutter/flutter/issues/131435, https://github.com/flutter/flutter/issues/104594, https://github.com/flutter/flutter/issues/43400 Currently the method we use for text span hit testing `TextPainter.getPositionForOffset` always returns the closest `TextPosition`, even when the given offset is far away from the text. The new TextPaintes method tells you the layout bounds `(width = letterspacing / 2 + x_advance + letterspacing / 2, height = font ascent + font descent)` of a character, the PR changes the hit testing implementation such that a TextSpan is only considered hit if the point-down event landed in one of its character's layout bounds. Potential issues: In theory since the text is baseline aligned, we should use the max ascent and max descent of each character to calculate the height of the text span's hit-test region, in case some characters in the span have to fall back to a different font, but that will be slower and it typically doesn't make a huge difference. This is a breaking change. |
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| .. | ||
| flutter | ||
| flutter_driver | ||
| flutter_goldens | ||
| flutter_localizations | ||
| flutter_test | ||
| flutter_tools | ||
| flutter_web_plugins | ||
| fuchsia_remote_debug_protocol | ||
| integration_test | ||
| analysis_options.yaml | ||