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swipeTracker: Use unaccelerated deltas

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Unaccelerated deltas make sure the gesture works the same regardless of how
fast the fingers move; this is what we were already doing for scrolling.

Remove the swipe multiplier as the deltas already match scrolling other than
the 1/10 multiplier Clutter applies to scrolling specifically.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1763>
This commit is contained in:
Alexander Mikhaylenko 2021-02-28 18:59:31 +05:00 • committed by Robert Mader
parent 20d99c69cb
commit b156cabdc9
1 changed files with 4 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

9
js/ui/swipeTracker.js
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@ -16,7 +16,6 @@ const TOUCHPAD_BASE_WIDTH = 400;
const EVENT_HISTORY_THRESHOLD_MS = 150;
const SCROLL_MULTIPLIER = 10;
const SWIPE_MULTIPLIER = 0.5;
const MIN_ANIMATION_DURATION = 100;
const MAX_ANIMATION_DURATION = 400;
@ -139,7 +138,7 @@ const TouchpadSwipeGesture = GObject.registerClass({
let time = event.get_time();
const [x, y] = event.get_coords();
let [dx, dy] = event.get_gesture_motion_delta();
const [dx, dy] = event.get_gesture_motion_delta_unaccelerated();
if (this._state === TouchpadState.NONE) {
if (dx === 0 && dy === 0)
@ -151,8 +150,8 @@ const TouchpadSwipeGesture = GObject.registerClass({
}
if (this._state === TouchpadState.PENDING) {
this._cumulativeX += dx * SWIPE_MULTIPLIER;
this._cumulativeY += dy * SWIPE_MULTIPLIER;
this._cumulativeX += dx;
this._cumulativeY += dy;
const cdx = this._cumulativeX;
const cdy = this._cumulativeY;
@ -179,7 +178,7 @@ const TouchpadSwipeGesture = GObject.registerClass({
}
const vertical = this.orientation === Clutter.Orientation.VERTICAL;
let delta = (vertical ? dy : dx) * SWIPE_MULTIPLIER;
let delta = vertical ? dy : dx;
const distance = vertical ? TOUCHPAD_BASE_HEIGHT : TOUCHPAD_BASE_WIDTH;
switch (event.get_gesture_phase()) {