Some improvements to home to overview transition for 0 button mode
- Peek in overview further, and with more overshoot
- Fade out and scale down workspace faster while swiping up
- Scale and translate workspace slower when letting go to enter
overview (so it doesn't zoom out at warp speed)
- Fade in all apps shelf sooner
Bug: 132455160
Change-Id: Ieafad0ccf9bb587889bc35d536627661db10e358
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 1480648..dcfd272 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -17,7 +17,18 @@
import static android.view.View.IMPORTANT_FOR_ACCESSIBILITY_AUTO;
import static android.view.View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
+import static android.view.View.VISIBLE;
import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
+
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_FADE;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_WORKSPACE_SCALE;
+import static com.android.launcher3.anim.Interpolators.ACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL;
+import static com.android.launcher3.anim.Interpolators.DEACCEL_1_7;
+import static com.android.launcher3.anim.Interpolators.clampToProgress;
import static com.android.launcher3.testing.TestProtocol.ALL_APPS_STATE_ORDINAL;
import static com.android.launcher3.testing.TestProtocol.BACKGROUND_APP_STATE_ORDINAL;
import static com.android.launcher3.testing.TestProtocol.NORMAL_STATE_ORDINAL;
@@ -30,11 +41,11 @@
import android.view.animation.Interpolator;
+import com.android.launcher3.anim.AnimatorSetBuilder;
import com.android.launcher3.states.SpringLoadedState;
import com.android.launcher3.uioverrides.UiFactory;
import com.android.launcher3.uioverrides.states.AllAppsState;
import com.android.launcher3.uioverrides.states.OverviewState;
-import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
import java.util.Arrays;
@@ -272,6 +283,46 @@
}
}
+ /**
+ * Prepares for a non-user controlled animation from fromState to this state. Preparations
+ * include:
+ * - Setting interpolators for various animations included in the state transition.
+ * - Setting some start values (e.g. scale) for views that are hidden but about to be shown.
+ */
+ public void prepareForAtomicAnimation(Launcher launcher, LauncherState fromState,
+ AnimatorSetBuilder builder) {
+ if (this == NORMAL && fromState == OVERVIEW) {
+ builder.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL);
+ builder.setInterpolator(ANIM_WORKSPACE_FADE, ACCEL);
+ builder.setInterpolator(ANIM_OVERVIEW_SCALE, clampToProgress(ACCEL, 0, 0.9f));
+ builder.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, ACCEL);
+ builder.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL_1_7);
+ Workspace workspace = launcher.getWorkspace();
+
+ // Start from a higher workspace scale, but only if we're invisible so we don't jump.
+ boolean isWorkspaceVisible = workspace.getVisibility() == VISIBLE;
+ if (isWorkspaceVisible) {
+ CellLayout currentChild = (CellLayout) workspace.getChildAt(
+ workspace.getCurrentPage());
+ isWorkspaceVisible = currentChild.getVisibility() == VISIBLE
+ && currentChild.getShortcutsAndWidgets().getAlpha() > 0;
+ }
+ if (!isWorkspaceVisible) {
+ workspace.setScaleX(0.92f);
+ workspace.setScaleY(0.92f);
+ }
+ Hotseat hotseat = launcher.getHotseat();
+ boolean isHotseatVisible = hotseat.getVisibility() == VISIBLE && hotseat.getAlpha() > 0;
+ if (!isHotseatVisible) {
+ hotseat.setScaleX(0.92f);
+ hotseat.setScaleY(0.92f);
+ }
+ } else if (this == NORMAL && fromState == OVERVIEW_PEEK) {
+ // Keep fully visible until the very end (when overview is offscreen) to make invisible.
+ builder.setInterpolator(ANIM_OVERVIEW_FADE, t -> t < 1 ? 0 : 1);
+ }
+ }
+
protected static void dispatchWindowStateChanged(Launcher launcher) {
launcher.getWindow().getDecorView().sendAccessibilityEvent(TYPE_WINDOW_STATE_CHANGED);
}