From f16e571330f030e445c4f7f63f55d093337ffd87 Mon Sep 17 00:00:00 2001
From: Adam Cohen <adamcohen@google.com>
Date: Thu, 13 Jan 2011 13:31:45 -0800
Subject: [PATCH] Making AllApps transition more cinematic

Change-Id: Ib9b98d90917ee69a9cc440cd9ed8df5a2f339dcf
---
 res/values-xlarge/config.xml             | 22 ++++++++---
 src/com/android/launcher2/Launcher.java  | 49 +++++++++++++++++++-----
 src/com/android/launcher2/Workspace.java | 13 +++++--
 3 files changed, 66 insertions(+), 18 deletions(-)

diff --git a/res/values-xlarge/config.xml b/res/values-xlarge/config.xml
index 8a103a36c5..5a38e08b25 100644
--- a/res/values-xlarge/config.xml
+++ b/res/values-xlarge/config.xml
@@ -9,7 +9,7 @@
 
     <!-- Duration in milliseconds of the all apps / configuration zoom-in animation. -->
     <!-- NB: This should be less than the workspaceShrinkTime as they happen together. -->
-    <integer name="config_allAppsZoomInTime">700</integer>
+    <integer name="config_allAppsZoomInTime">850</integer>
 
     <!-- Duration in milliseconds of the transition between tabs in the all apps/customize
          tray -->
@@ -17,17 +17,29 @@
 
     <!-- Duration in milliseconds of the all apps zoom-out animation -->
     <!-- NB: This should be less than the workspaceUnshrinkTime as they happen together. -->
-    <integer name="config_allAppsZoomOutTime">350</integer>
+    <integer name="config_allAppsZoomOutTime">500</integer>
 
     <!-- Scaling factor used in the all apps zooming animations -->
-    <integer name="config_allAppsZoomScaleFactor">7</integer>
+    <integer name="config_allAppsZoomScaleFactor">10</integer>
+
+    <!-- Duration in milliseconds of the all apps / configuration zoom-in animation. -->
+    <!-- NB: This should be less than the workspaceShrinkTime as they happen together. -->
+    <integer name="config_customizeZoomInTime">700</integer>
+
+    <!-- Duration in milliseconds of the all apps zoom-out animation -->
+    <!-- NB: This should be less than the workspaceUnshrinkTime as they happen together. -->
+    <integer name="config_customizeZoomOutTime">350</integer>
+
+    <!-- Scaling factor used in the all apps zooming animations -->
+    <integer name="config_customizeZoomScaleFactor">7</integer>
 
     <!-- Duration in milliseconds of the animations between all apps, customize, & home.
          NOTE: If these are changed, the toolbar animation times below should also be. -->
     <integer name="config_allAppsCameraPanTime">700</integer>
-    <integer name="config_workspaceShrinkTime">700</integer>
-    <integer name="config_workspaceUnshrinkTime">350</integer>
     <integer name="config_allAppsFadeOutTime">150</integer>
+    <integer name="config_customizeWorkspaceShrinkTime">700</integer>
+    <integer name="config_allAppsWorkspaceShrinkTime">800</integer>
+    <integer name="config_workspaceUnshrinkTime">350</integer>
 
     <!-- Duration in milliseconds toolbar fade in and fade out animations.
          NOTE: Fade in and fade out time should together be less the transition
diff --git a/src/com/android/launcher2/Launcher.java b/src/com/android/launcher2/Launcher.java
index d0f52cb5c7..f43f31e93f 100644
--- a/src/com/android/launcher2/Launcher.java
+++ b/src/com/android/launcher2/Launcher.java
@@ -89,6 +89,7 @@ import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.view.View.OnLongClickListener;
 import android.view.accessibility.AccessibilityEvent;
+import android.view.animation.DecelerateInterpolator;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.Advanceable;
 import android.widget.EditText;
@@ -2647,10 +2648,11 @@ public final class Launcher extends Activity
         // Set pivotY so that at the starting zoom factor, the view is partially
         // visible. Modifying initialHeightFactor changes how much of the view is
         // initially showing, and hence the perceived angle from which the view enters.
-        final float initialHeightFactor = 0.2f;
         if (state == State.ALL_APPS) {
-            view.setPivotY((1 + initialHeightFactor) * height);
+            final float initialHeightFactor = 0.165f;
+            view.setPivotY((1 - initialHeightFactor) * height);
         } else {
+            final float initialHeightFactor = 0.2f;
             view.setPivotY(-initialHeightFactor * height);
         }
     }
@@ -2663,15 +2665,23 @@ public final class Launcher extends Activity
      */
     private void cameraZoomOut(State toState, boolean animated) {
         final Resources res = getResources();
-        final int duration = res.getInteger(R.integer.config_allAppsZoomInTime);
-        final float scale = (float) res.getInteger(R.integer.config_allAppsZoomScaleFactor);
         final boolean toAllApps = (toState == State.ALL_APPS);
+
+        final int duration = toAllApps ?
+                res.getInteger(R.integer.config_allAppsZoomInTime) :
+                res.getInteger(R.integer.config_customizeZoomInTime);
+
+        final float scale = toAllApps ?
+                (float) res.getInteger(R.integer.config_allAppsZoomScaleFactor) :
+                (float) res.getInteger(R.integer.config_customizeZoomScaleFactor);
+
         final View toView = toAllApps ? (View) mAllAppsGrid : mHomeCustomizationDrawer;
 
         setPivotsForZoom(toView, toState, scale);
 
         if (toAllApps) {
             mWorkspace.shrink(ShrinkState.BOTTOM_HIDDEN, animated);
+            toView.setAlpha(0f);
         } else {
             mWorkspace.shrink(ShrinkState.TOP, animated);
         }
@@ -2680,8 +2690,17 @@ public final class Launcher extends Activity
             ValueAnimator scaleAnim = ObjectAnimator.ofPropertyValuesHolder(toView,
                     PropertyValuesHolder.ofFloat("scaleX", scale, 1.0f),
                     PropertyValuesHolder.ofFloat("scaleY", scale, 1.0f));
+
             scaleAnim.setDuration(duration);
 
+            if (toAllApps) {
+                ObjectAnimator alphaAnim = ObjectAnimator.ofPropertyValuesHolder(toView,
+                        PropertyValuesHolder.ofFloat("alpha", 1.0f));
+                alphaAnim.setInterpolator(new DecelerateInterpolator(1.5f));
+                alphaAnim.setDuration(duration);
+                alphaAnim.start();
+            }
+
             scaleAnim.setInterpolator(new Workspace.ZoomOutInterpolator());
             scaleAnim.addListener(new AnimatorListenerAdapter() {
                 @Override
@@ -2690,7 +2709,9 @@ public final class Launcher extends Activity
                     toView.setTranslationX(0.0f);
                     toView.setTranslationY(0.0f);
                     toView.setVisibility(View.VISIBLE);
-                    toView.setAlpha(1.0f);
+                    if (!toAllApps) {
+                        toView.setAlpha(1.0f);
+                    }
                 }
                 @Override
                 public void onAnimationEnd(Animator animation) {
@@ -2707,7 +2728,7 @@ public final class Launcher extends Activity
             hideAndShowToolbarButtons(toState, toolbarShowAnim, toolbarHideAnim);
 
             // toView should appear right at the end of the workspace shrink animation
-            final int startDelay = res.getInteger(R.integer.config_workspaceShrinkTime) - duration;
+            final int startDelay = 0;
 
             if (mStateAnimation != null) mStateAnimation.cancel();
             mStateAnimation = new AnimatorSet();
@@ -2740,10 +2761,17 @@ public final class Launcher extends Activity
 
     private void cameraZoomIn(State fromState, boolean animated, boolean springLoaded) {
         Resources res = getResources();
-        int duration = res.getInteger(R.integer.config_allAppsZoomOutTime);
-        float scaleFactor = (float) res.getInteger(R.integer.config_allAppsZoomScaleFactor);
-        final View fromView =
-            (fromState == State.ALL_APPS) ? (View) mAllAppsGrid : mHomeCustomizationDrawer;
+        final boolean fromAllApps = (fromState == State.ALL_APPS);
+
+        int duration = fromAllApps ?
+            res.getInteger(R.integer.config_allAppsZoomOutTime) :
+            res.getInteger(R.integer.config_customizeZoomOutTime);
+
+        float scaleFactor = fromAllApps ?
+            (float) res.getInteger(R.integer.config_allAppsZoomScaleFactor) :
+            (float) res.getInteger(R.integer.config_customizeZoomScaleFactor);
+
+        final View fromView = fromAllApps ? (View) mAllAppsGrid : mHomeCustomizationDrawer;
 
         mCustomizePagedView.endChoiceMode();
         mAllAppsPagedView.endChoiceMode();
@@ -2766,6 +2794,7 @@ public final class Launcher extends Activity
             ValueAnimator alphaAnim = ObjectAnimator.ofPropertyValuesHolder(fromView,
                     PropertyValuesHolder.ofFloat("alpha", 1.0f, 0.0f));
             alphaAnim.setDuration(res.getInteger(R.integer.config_allAppsFadeOutTime));
+            alphaAnim.setInterpolator(new DecelerateInterpolator(1.5f));
             alphaAnim.addListener(new AnimatorListenerAdapter() {
                 @Override
                 public void onAnimationEnd(Animator animation) {
diff --git a/src/com/android/launcher2/Workspace.java b/src/com/android/launcher2/Workspace.java
index d65f692079..a434eb35ca 100644
--- a/src/com/android/launcher2/Workspace.java
+++ b/src/com/android/launcher2/Workspace.java
@@ -1040,6 +1040,7 @@ public class Workspace extends SmoothPagedView
                 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape));
         float finalAlpha = 1.0f;
         float extraShrinkFactor = 1.0f;
+
         if (shrinkState == ShrinkState.BOTTOM_VISIBLE) {
              newY = screenHeight - newY - scaledPageHeight;
         } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) {
@@ -1057,6 +1058,13 @@ public class Workspace extends SmoothPagedView
                 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape));
         }
 
+        int duration;
+        if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) {
+            duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime);
+        } else {
+            duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime);
+        }
+
         // We animate all the screens to the centered position in workspace
         // At the same time, the screens become greyed/dimmed
 
@@ -1071,17 +1079,16 @@ public class Workspace extends SmoothPagedView
         if (mAnimator != null) {
             mAnimator.cancel();
         }
+
         mAnimator = new AnimatorSet();
         for (int i = 0; i < screenCount; i++) {
-            CellLayout cl = (CellLayout) getChildAt(i);
+            final CellLayout cl = (CellLayout) getChildAt(i);
 
             float rotation = (-i + 2) * WORKSPACE_ROTATION;
             float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f));
             float rotationScaleY = getYScaleForScreen(i);
 
             if (animated) {
-                final int duration = res.getInteger(R.integer.config_workspaceShrinkTime);
-
                 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl,
                         PropertyValuesHolder.ofFloat("x", newX),
                         PropertyValuesHolder.ofFloat("y", newY),