| commit | 908e43770ab94c7d5bcc97f0cbbea9e676a9ba6c | |
| author | ccameron <ccameron@chromium.org> | |
| Wed, 29 Apr 2015 23:40:03 +0000 (29 16:40 -0700) | ||
| committer | Commit bot <commit-bot@chromium.org> | |
| Wed, 29 Apr 2015 23:40:42 +0000 (29 23:40 +0000) | ||
| tree | 48ccbb700b4756467c15cf267cbcc3953e7641f4 | treesnapshot (tar.gz zip) |
| parent | 5125cfbdf5bfef2e90f7657a881d573d444aa8f7 | commitdiff |
Mac: Make pinch less sensitive
Require a cumulative 40% zoom before forwarding a pinch to the renderer.
For the discrete browser zoom pre-M42, we required 60% (this code was
removed in https://codereview.chromium.org/899283004).
If a zoom gesture (which crossed the 40% line) has occurred in the last
second, do not require the 40% threshold (since this is likely an effort
to re-zoom in).
Of note is that these percentages are additive (the sum of the
magnification factors), not multiplicative (the product of 1 plus the
magnification factors). This is to be consistent with the previous
zoom threshold code.
Also limit the maximum pinch-zoom level to 3x, since the full 4x is
rarely useful.
BUG=478981
Review URL: https://codereview.chromium.org/1110253002
Cr-Commit-Position: refs/heads/master@{#327619}
Require a cumulative 40% zoom before forwarding a pinch to the renderer.
For the discrete browser zoom pre-M42, we required 60% (this code was
removed in https://codereview.chromium.org/899283004).
If a zoom gesture (which crossed the 40% line) has occurred in the last
second, do not require the 40% threshold (since this is likely an effort
to re-zoom in).
Of note is that these percentages are additive (the sum of the
magnification factors), not multiplicative (the product of 1 plus the
magnification factors). This is to be consistent with the previous
zoom threshold code.
Also limit the maximum pinch-zoom level to 3x, since the full 4x is
rarely useful.
BUG=478981
Review URL: https://codereview.chromium.org/1110253002
Cr-Commit-Position: refs/heads/master@{#327619}