This commit implements the auto-dir scrolling functionality in non-APZ, based on
part 1 to part 3. However, the functionality of mousewheel.autodir.honourroot is
unimplemented in this commit.
MozReview-Commit-ID: 2vYABOx4RkK
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extra : rebase_source : 7dc45e6747a101c1a2c3a22bc695b2a0b2494b50
This commit implements the auto-dir scrolling functionality in APZ, based on
part 1 to part 3. However, the functionality of mousewheel.autodir.honourroot
will be implemented in a future.
MozReview-Commit-ID: 9xai99x71gh
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extra : rebase_source : 118d188f730e3fb91d147b076a053cb04e622e55
This commit defines a common interface of the auto-dir scrolling functionality.
In future commits, it will be implemented in both the APZ and non-APZ parts.
MozReview-Commit-ID: 8fApuHwsbrv
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extra : rebase_source : e4c47ea52c1c9c60822b23216db020154522bb7e
This commit only introduces the concept and the functionality of retrieving the
values from the two new related prefs. Still no actual functionality change is
involved.
MozReview-Commit-ID: 2Gl3Wqdo6jL
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extra : rebase_source : bf30483e3e32829a5d6fd927740471ba348448f9
Do some work in preparation for implementing actual functionalities for this
bug. No actual functionality change is involved in this commit.
MozReview-Commit-ID: 5aLhr38n1N4
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extra : rebase_source : 15cfc2cea5b7668367dd3bd4a0746ae8c61b7d20
Unlike a DOM wheel event listeners which receive original delta values, plugins
receive horizontalized ones. It's not reasonable to not send original values to
plugins.
Plugin developers can do any delta adjustment, and they are also capable of
DIRECTLY getting what inputs the user is manipulating, that is to say,
developers can horizontalize scrolling for [Shift+Vertical Wheel] or other other
inputs if they want, it's just their matter; conversely, they aren't capable of
getting what delta adjustment their upstream has already encapsulated for them.
So it's not reasonable to send adjusted delta values to plugins.
This patch restores horizontalized delta values to the original for plugins.
MozReview-Commit-ID: IX8XJn0lbKq
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extra : rebase_source : ea9abef4706701e2c43ee06563bd10bc0a863614
As for now, the scrollable direction with a mouse wheel for a single-line text
control is hard-coded; that is, only horizontal wheel scrolls are able to take
effect while vertical ones aren't. However, this isn't the desired case for
vertical writing mode, where the opposite case definitely suits better.
This commit refines the hard-coded scrollable direction for a single-line text
control to be writing-mode-adaptive.
MozReview-Commit-ID: 4Zkoe2ExPCZ
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extra : rebase_source : 113b2ea80b6bbbcd2d8379b438de97eedd616551
This patch declares a new default action, "horizontal scroll", this scrolls
content horizontally with deltaY of wheel events and ignores deltaX and deltaZ.
This is used for default action with Shift key in default setting except on
macOS. On macOS, legacy mouse's vertical wheel operation with Shift key causes
native horizontal wheel event. Therefore, we don't need to use this new
default action on macOS. Additionally, old default action with Shift key,
navigating history, is moved to with Alt key. This makes same settings between
macOS and the others. So, this is better for users who use macOS and another
OS and web app developers who check wheel events only on macOS or other
platform(s).
For simpler implementation, default action handlers moves deltaY values to
deltaX values temporarily *only* while they handle wheel events. This is
performed by AutoWheelDeltaAdjuster and restored after handling it
automatically.
So, in other words, even if default action is "horizontal scroll", web apps
receives wheel events whose deltaY is not zero but its content will be
scrolled horizontally. This is same as Chromium, so, this behavior shouldn't
cause any incompatible behavior with it.
MozReview-Commit-ID: E4X3yZzLEAl
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extra : rebase_source : e20d854c6b0a181ad4c9e7304bd9ad14256481ff
Sylvestre Ledru
Andi-Bogdan Postelnicu
Zhang Junzhi
Masayuki Nakano
Stone Shih
Masatoshi Kimura
Sebastian Hengst
Mats Palmgren
David Anderson
Nigel Babu
Andrew McCreight
Nicolas Silva