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Consolidating various interpolators

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Change-Id: I9588eee3552001b162a1e8d5ccefcfb44d221880
This commit is contained in:
Sunny Goyal
2017-10-26 15:36:10 -07:00
parent d4ece005e4
commit 5bc6b6f14c
23 changed files with 153 additions and 190 deletions
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60
src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
View File

@@ -30,10 +30,10 @@ import android.content.res.Resources;
import android.util.Property;
import android.view.View;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.DecelerateInterpolator;
import com.android.launcher3.LauncherStateManager.AnimationConfig;
import com.android.launcher3.anim.AnimationLayerSet;
import com.android.launcher3.anim.Interpolators;
/**
* A convenience class to update a view's visibility state after an alpha animation.
@@ -85,50 +85,6 @@ class AlphaUpdateListener extends AnimatorListenerAdapter implements ValueAnimat
}
}
/**
* This interpolator emulates the rate at which the perceived scale of an object changes
* as its distance from a camera increases. When this interpolator is applied to a scale
* animation on a view, it evokes the sense that the object is shrinking due to moving away
* from the camera.
*/
class ZInterpolator implements TimeInterpolator {
private float focalLength;
public ZInterpolator(float foc) {
focalLength = foc;
}
public float getInterpolation(float input) {
return (1.0f - focalLength / (focalLength + input)) /
(1.0f - focalLength / (focalLength + 1.0f));
}
}
/**
* The exact reverse of ZInterpolator.
*/
class InverseZInterpolator implements TimeInterpolator {
private ZInterpolator zInterpolator;
public InverseZInterpolator(float foc) {
zInterpolator = new ZInterpolator(foc);
}
public float getInterpolation(float input) {
return 1 - zInterpolator.getInterpolation(1 - input);
}
}
/**
* InverseZInterpolator compounded with an ease-out.
*/
class ZoomInInterpolator implements TimeInterpolator {
private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f);
private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f);
public float getInterpolation(float input) {
return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input));
}
}
/**
* Manages the animations between each of the workspace states.
*/
@@ -136,8 +92,6 @@ public class WorkspaceStateTransitionAnimation {
private static final PropertySetter NO_ANIM_PROPERTY_SETTER = new PropertySetter();
private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator();
public final int mWorkspaceScrimAlpha;
private final Launcher mLauncher;
@@ -197,13 +151,13 @@ public class WorkspaceStateTransitionAnimation {
propertySetter.setViewAlpha(mWorkspace.createHotseatAlphaAnimator(finalHotseatAlpha),
mLauncher.getHotseat(), finalHotseatAlpha);
propertySetter.setFloat(mWorkspace, SCALE_PROPERTY, mNewScale, mZoomInInterpolator);
propertySetter.setFloat(mWorkspace, SCALE_PROPERTY, mNewScale, Interpolators.ZOOM_IN);
propertySetter.setFloat(mWorkspace, View.TRANSLATION_Y,
finalWorkspaceTranslationY, mZoomInInterpolator);
finalWorkspaceTranslationY, Interpolators.ZOOM_IN);
// Set scrim
propertySetter.setInt(mLauncher.getDragLayer().getScrim(), DRAWABLE_ALPHA,
state.hasScrim ? mWorkspaceScrimAlpha : 0, new DecelerateInterpolator(1.5f));
state.hasScrim ? mWorkspaceScrimAlpha : 0, Interpolators.DEACCEL_1_5);
}
public void applyChildState(LauncherState state, CellLayout cl, int childIndex) {
@@ -214,13 +168,13 @@ public class WorkspaceStateTransitionAnimation {
private void applyChildState(LauncherState state, CellLayout cl, int childIndex,
int centerPage, PropertySetter propertySetter) {
propertySetter.setInt(cl.getScrimBackground(),
DRAWABLE_ALPHA, state.hasScrim ? 255 : 0, mZoomInInterpolator);
DRAWABLE_ALPHA, state.hasScrim ? 255 : 0, Interpolators.ZOOM_IN);
// Only animate the page alpha when we actually fade pages
if (mWorkspaceFadeInAdjacentScreens) {
float finalAlpha = state == LauncherState.NORMAL && childIndex != centerPage ? 0 : 1f;
propertySetter.setFloat(cl.getShortcutsAndWidgets(), View.ALPHA,
finalAlpha, mZoomInInterpolator);
finalAlpha, Interpolators.ZOOM_IN);
}
}
@@ -302,7 +256,7 @@ public class WorkspaceStateTransitionAnimation {
}
private TimeInterpolator getFadeInterpolator(float finalAlpha) {
return finalAlpha == 0 ? new DecelerateInterpolator(2) : null;
return finalAlpha == 0 ? Interpolators.DEACCEL_2 : null;
}
}
}