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Commit a93d6a77 authored by Michal Brzezinski's avatar Michal Brzezinski
Browse files

Adding velocity threshold for home touchpad gesture 

Also creating fake for VelocityTracker and reusing it in recent apps gesture test

Test: HomeGestureRecognizerTest
Test: manual, home gesture is not successful if gesture is done slowly
Fixes: 365787507
Flag: com.android.systemui.shared.new_touchpad_gestures_tutorial
Change-Id: Ibcc92a3562278bff7522f4c096bacbe72a30331f
parent d7864f4f

packages/SystemUI/multivalentTests/src/com/android/systemui/touchpad/tutorial/ui/gesture/HomeGestureRecognizerTest.kt

+21 −1
Original line number Diff line number Diff line
@@ -20,10 +20,12 @@ import android.view.MotionEvent 
import androidx.test.ext.junit.runners.AndroidJUnit4

import androidx.test.filters.SmallTest

import com.android.systemui.SysuiTestCase

import com.android.systemui.testKosmos

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.Finished

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.InProgress

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.NotStarted

import com.android.systemui.touchpad.tutorial.ui.gesture.MultiFingerGesture.Companion.SWIPE_DISTANCE

import com.android.systemui.touchpad.ui.gesture.fakeVelocityTracker

import com.google.common.truth.Truth.assertThat

import org.junit.Before

import org.junit.Test
@@ -33,12 +35,24 @@ import org.junit.runner.RunWith 
@RunWith(AndroidJUnit4::class)

class HomeGestureRecognizerTest : SysuiTestCase() {



    companion object {

        const val THRESHOLD_VELOCITY_PX_PER_MS = 1f

        const val SLOW = THRESHOLD_VELOCITY_PX_PER_MS - 0.01f

        const val FAST = THRESHOLD_VELOCITY_PX_PER_MS + 0.01f

    }



    private var gestureState: GestureState = GestureState.NotStarted

    private var velocityTracker = testKosmos().fakeVelocityTracker

    private val gestureRecognizer =

        HomeGestureRecognizer(gestureDistanceThresholdPx = SWIPE_DISTANCE.toInt())

        HomeGestureRecognizer(

            gestureDistanceThresholdPx = SWIPE_DISTANCE.toInt(),

            velocityThresholdPxPerMs = THRESHOLD_VELOCITY_PX_PER_MS,

            velocityTracker = velocityTracker,

        )



    @Before

    fun before() {

        velocityTracker.setVelocity(Velocity(FAST))

        gestureRecognizer.addGestureStateCallback { gestureState = it }

    }
@@ -47,6 +61,12 @@ class HomeGestureRecognizerTest : SysuiTestCase() { 
        assertStateAfterEvents(events = ThreeFingerGesture.swipeUp(), expectedState = Finished)

    }



    @Test

    fun doesntTriggerGestureFinished_onGestureSpeedTooSlow() {

        velocityTracker.setVelocity(Velocity(SLOW))

        assertStateAfterEvents(events = ThreeFingerGesture.swipeUp(), expectedState = NotStarted)

    }



    @Test

    fun triggersGestureProgressForThreeFingerGestureStarted() {

        assertStateAfterEvents(

packages/SystemUI/multivalentTests/src/com/android/systemui/touchpad/tutorial/ui/gesture/RecentAppsGestureRecognizerTest.kt

+9 −14
Original line number Diff line number Diff line
@@ -17,21 +17,19 @@ 
package com.android.systemui.touchpad.tutorial.ui.gesture



import android.view.MotionEvent

import androidx.compose.ui.input.pointer.util.VelocityTracker1D

import androidx.test.ext.junit.runners.AndroidJUnit4

import androidx.test.filters.SmallTest

import com.android.systemui.SysuiTestCase

import com.android.systemui.testKosmos

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.Finished

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.InProgress

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.NotStarted

import com.android.systemui.touchpad.tutorial.ui.gesture.MultiFingerGesture.Companion.SWIPE_DISTANCE

import com.android.systemui.touchpad.ui.gesture.fakeVelocityTracker

import com.google.common.truth.Truth.assertThat

import org.junit.Before

import org.junit.Test

import org.junit.runner.RunWith

import org.mockito.kotlin.doReturn

import org.mockito.kotlin.mock

import org.mockito.kotlin.whenever



@SmallTest

@RunWith(AndroidJUnit4::class)
@@ -39,26 +37,23 @@ class RecentAppsGestureRecognizerTest : SysuiTestCase() { 


    companion object {

        const val THRESHOLD_VELOCITY_PX_PER_MS = 0.1f

        // multiply by 1000 to get px/ms instead of px/s which is unit used by velocity tracker

        const val SLOW = THRESHOLD_VELOCITY_PX_PER_MS * 1000 - 1

        const val FAST = THRESHOLD_VELOCITY_PX_PER_MS * 1000 + 1

        const val SLOW = THRESHOLD_VELOCITY_PX_PER_MS - 0.01f

        const val FAST = THRESHOLD_VELOCITY_PX_PER_MS + 0.01f

    }



    private var velocityTracker = testKosmos().fakeVelocityTracker



    private var gestureState: GestureState = GestureState.NotStarted

    private val velocityTracker1D =

        mock<VelocityTracker1D> {

            // by default return correct speed for the gesture - as if pointer is slowing down

            on { calculateVelocity() } doReturn SLOW

        }

    private val gestureRecognizer =

        RecentAppsGestureRecognizer(

            gestureDistanceThresholdPx = SWIPE_DISTANCE.toInt(),

            velocityThresholdPxPerMs = THRESHOLD_VELOCITY_PX_PER_MS,

            velocityTracker = VerticalVelocityTracker(velocityTracker1D),

            velocityTracker = velocityTracker,

        )



    @Before

    fun before() {

        velocityTracker.setVelocity(Velocity(SLOW))

        gestureRecognizer.addGestureStateCallback { gestureState = it }

    }
@@ -69,7 +64,7 @@ class RecentAppsGestureRecognizerTest : SysuiTestCase() { 


    @Test

    fun doesntTriggerGestureFinished_onGestureSpeedTooHigh() {

        whenever(velocityTracker1D.calculateVelocity()).thenReturn(FAST)

        velocityTracker.setVelocity(Velocity(FAST))

        assertStateAfterEvents(events = ThreeFingerGesture.swipeUp(), expectedState = NotStarted)

    }

packages/SystemUI/res/values/dimens.xml

+5 −1
Original line number Diff line number Diff line
@@ -1995,12 +1995,16 @@ 
    <dimen name="backlight_indicator_step_large_radius">28dp</dimen>



    <!-- Touchpad gestures tutorial-->

    <!-- This value is in unit of dp/ms

    <!-- This value is in dp/ms.

        TriggerSwipeUpTouchTracker (which is base for gesture tutorial implementation) uses value

        of 0.5dp but from manual testing it's too high and doesn't really feel like it's forcing

        slowing down. Also for tutorial it should be fine to lean to the side of being more strict

        rather than not strict enough and not teaching user the proper gesture as a result.-->

    <dimen name="touchpad_recent_apps_gesture_velocity_threshold">0.05dp</dimen>

    <!-- This value is in dp/ms.

        As above, it's not tied to system-wide value (defined in launcher's

        quickstep_fling_threshold_speed) because for tutorial it's fine to be more strict. -->

    <dimen name="touchpad_home_gesture_velocity_threshold">0.5dp</dimen>

    <!-- Normal gesture threshold is system_gestures_distance_threshold but for tutorial we can

         exaggerate gesture, which also works much better with live tracking -->

    <dimen name="touchpad_tutorial_gestures_distance_threshold">48dp</dimen>

packages/SystemUI/src/com/android/systemui/touchpad/tutorial/ui/composable/HomeGestureTutorialScreen.kt

+2 −1
Original line number Diff line number Diff line
@@ -63,7 +63,8 @@ fun HomeGestureTutorialScreen(onDoneButtonClicked: () -> Unit, onBack: () -> Uni 
private fun rememberHomeGestureRecognizer(resources: Resources): GestureRecognizer {

    val distance =

        resources.getDimensionPixelSize(R.dimen.touchpad_tutorial_gestures_distance_threshold)

    return remember(distance) { HomeGestureRecognizer(distance) }

    val velocity = resources.getDimension(R.dimen.touchpad_home_gesture_velocity_threshold)

    return remember(distance) { HomeGestureRecognizer(distance, velocity) }

}



@Composable

packages/SystemUI/src/com/android/systemui/touchpad/tutorial/ui/gesture/HomeGestureRecognizer.kt

+11 −2
Original line number Diff line number Diff line
@@ -19,9 +19,14 @@ package com.android.systemui.touchpad.tutorial.ui.gesture 
import android.util.MathUtils

import android.view.MotionEvent

import com.android.systemui.touchpad.tutorial.ui.gesture.GestureState.InProgress

import kotlin.math.abs



/** Recognizes touchpad home gesture, that is - using three fingers on touchpad - swiping up. */

class HomeGestureRecognizer(private val gestureDistanceThresholdPx: Int) : GestureRecognizer {

class HomeGestureRecognizer(

    private val gestureDistanceThresholdPx: Int,

    private val velocityThresholdPxPerMs: Float,

    private val velocityTracker: VelocityTracker = VerticalVelocityTracker(),

) : GestureRecognizer {



    private val distanceTracker = DistanceTracker()

    private var gestureStateChangedCallback: (GestureState) -> Unit = {}
@@ -37,10 +42,14 @@ class HomeGestureRecognizer(private val gestureDistanceThresholdPx: Int) : Gestu 
    override fun accept(event: MotionEvent) {

        if (!isThreeFingerTouchpadSwipe(event)) return

        val gestureState = distanceTracker.processEvent(event)

        velocityTracker.accept(event)

        updateGestureState(

            gestureStateChangedCallback,

            gestureState,

            isFinished = { -it.deltaY >= gestureDistanceThresholdPx },

            isFinished = {

                -it.deltaY >= gestureDistanceThresholdPx &&

                    abs(velocityTracker.calculateVelocity().value) >= velocityThresholdPxPerMs

            },

            progress = { InProgress(MathUtils.saturate(-it.deltaY / gestureDistanceThresholdPx)) },

        )

    }