Only inset IME by 48dp instead of 60dp when taskbar is present

- Update providedInternalImeInsets whenever taskbar height changes, since the insets are subtracted from the taskbar window height. This ensures the IME always has the same bottom inset (48dp) regardless of taskbar's window size
- Also translate nav buttons down to center in the new size when IME is showing

Test: Open IME from home and in apps, both in gesture nav and 3 button mode. Ensure IME bottom inset is always 48dp and nav buttons center within that space
Fixes: 201115344
Change-Id: I5ed25b0ffc08145b2221cc5c960e669cc21b2aa7
diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 3b2d44b..5ea94e9 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -216,6 +216,7 @@
 
     <!-- Taskbar -->
     <dimen name="taskbar_size">@*android:dimen/taskbar_frame_height</dimen>
+    <dimen name="taskbar_ime_size">48dp</dimen>
     <dimen name="taskbar_icon_touch_size">48dp</dimen>
     <dimen name="taskbar_icon_drag_icon_size">54dp</dimen>
     <dimen name="taskbar_folder_margin">16dp</dimen>
diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
index ce1e8b6b..48b0f6d 100644
--- a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -106,6 +106,9 @@
 
     private final AnimatedFloat mTaskbarNavButtonTranslationY = new AnimatedFloat(
             this::updateNavButtonTranslationY);
+    private final AnimatedFloat mTaskbarNavButtonTranslationYForIme = new AnimatedFloat(
+            this::updateNavButtonTranslationY);
+    // Only applies to mTaskbarNavButtonTranslationY
     private final AnimatedFloat mNavButtonTranslationYMultiplier = new AnimatedFloat(
             this::updateNavButtonTranslationY);
     private final AnimatedFloat mTaskbarNavButtonDarkIntensity = new AnimatedFloat(
@@ -162,14 +165,26 @@
                 .getKeyguardBgTaskbar(),
                 flags -> (flags & FLAG_KEYGUARD_VISIBLE) == 0, AnimatedFloat.VALUE, 1, 0));
 
-        // Make sure to remove nav bar buttons translation when notification shade is expanded.
-        mPropertyHolders.add(new StatePropertyHolder(mNavButtonTranslationYMultiplier,
-                flags -> (flags & FLAG_NOTIFICATION_SHADE_EXPANDED) != 0, AnimatedFloat.VALUE,
-                0, 1));
-
         // Force nav buttons (specifically back button) to be visible during setup wizard.
         boolean isInSetup = !mContext.isUserSetupComplete();
-        if (isThreeButtonNav || isInSetup) {
+        boolean alwaysShowButtons = isThreeButtonNav || isInSetup;
+
+        // Make sure to remove nav bar buttons translation when notification shade is expanded or
+        // IME is showing (add separate translation for IME).
+        int flagsToRemoveTranslation = FLAG_NOTIFICATION_SHADE_EXPANDED | FLAG_IME_VISIBLE;
+        mPropertyHolders.add(new StatePropertyHolder(mNavButtonTranslationYMultiplier,
+                flags -> (flags & flagsToRemoveTranslation) != 0, AnimatedFloat.VALUE,
+                0, 1));
+        // Center nav buttons in new height for IME.
+        float transForIme = (mContext.getDeviceProfile().taskbarSize
+                - mContext.getTaskbarHeightForIme()) / 2f;
+        // For gesture nav, nav buttons only show for IME anyway so keep them translated down.
+        float defaultButtonTransY = alwaysShowButtons ? 0 : transForIme;
+        mPropertyHolders.add(new StatePropertyHolder(mTaskbarNavButtonTranslationYForIme,
+                flags -> (flags & FLAG_IME_VISIBLE) != 0, AnimatedFloat.VALUE, transForIme,
+                defaultButtonTransY));
+
+        if (alwaysShowButtons) {
             initButtons(mNavButtonContainer, mEndContextualContainer,
                     mControllers.navButtonController);
 
@@ -408,8 +423,10 @@
     }
 
     private void updateNavButtonTranslationY() {
-        mNavButtonsView.setTranslationY(mTaskbarNavButtonTranslationY.value
-                * mNavButtonTranslationYMultiplier.value);
+        float normalTranslationY = mTaskbarNavButtonTranslationY.value
+                * mNavButtonTranslationYMultiplier.value;
+        float otherTranslationY = mTaskbarNavButtonTranslationYForIme.value;
+        mNavButtonsView.setTranslationY(normalTranslationY + otherTranslationY);
     }
 
     private void updateNavButtonDarkIntensity() {
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 692352b..73c6579 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -32,6 +32,7 @@
 import android.content.Intent;
 import android.content.pm.ActivityInfo.Config;
 import android.content.pm.LauncherApps;
+import android.content.res.Resources;
 import android.graphics.Insets;
 import android.graphics.PixelFormat;
 import android.graphics.Rect;
@@ -96,6 +97,7 @@
 
     private final WindowManager mWindowManager;
     private final @Nullable RoundedCorner mLeftCorner, mRightCorner;
+    private final int mTaskbarHeightForIme;
     private WindowManager.LayoutParams mWindowLayoutParams;
     private boolean mIsFullscreen;
     // The size we should return to when we call setTaskbarWindowFullscreen(false)
@@ -122,10 +124,13 @@
         mIsUserSetupComplete = SettingsCache.INSTANCE.get(this).getValue(
                 Settings.Secure.getUriFor(Settings.Secure.USER_SETUP_COMPLETE), 0);
 
-        float taskbarIconSize = getResources().getDimension(R.dimen.taskbar_icon_size);
-        mDeviceProfile.updateIconSize(1, getResources());
+        final Resources resources = getResources();
+        float taskbarIconSize = resources.getDimension(R.dimen.taskbar_icon_size);
+        mDeviceProfile.updateIconSize(1, resources);
         float iconScale = taskbarIconSize / mDeviceProfile.iconSizePx;
-        mDeviceProfile.updateIconSize(iconScale, getResources());
+        mDeviceProfile.updateIconSize(iconScale, resources);
+
+        mTaskbarHeightForIme = resources.getDimensionPixelSize(R.dimen.taskbar_ime_size);
 
         mLayoutInflater = LayoutInflater.from(this).cloneInContext(this);
 
@@ -197,7 +202,7 @@
         // Adjust the frame by the rounded corners (ie. leaving just the bar as the inset) when
         // the IME is showing
         mWindowLayoutParams.providedInternalImeInsets = Insets.of(0,
-                getDefaultTaskbarWindowHeight() - mDeviceProfile.taskbarSize, 0, 0);
+                getDefaultTaskbarWindowHeight() - mTaskbarHeightForIme, 0, 0);
 
         // Initialize controllers after all are constructed.
         mControllers.init(sharedState);
@@ -423,7 +428,9 @@
         if (mWindowLayoutParams.height == height || mIsDestroyed) {
             return;
         }
-        if (height != MATCH_PARENT) {
+        if (height == MATCH_PARENT) {
+            height = mDeviceProfile.heightPx;
+        } else {
             mLastRequestedNonFullscreenHeight = height;
             if (mIsFullscreen) {
                 // We still need to be fullscreen, so defer any change to our height until we call
@@ -434,6 +441,8 @@
             }
         }
         mWindowLayoutParams.height = height;
+        mWindowLayoutParams.providedInternalImeInsets =
+                Insets.of(0, height - mTaskbarHeightForIme, 0, 0);
         mWindowManager.updateViewLayout(mDragLayer, mWindowLayoutParams);
     }
 
@@ -444,6 +453,13 @@
         return mDeviceProfile.taskbarSize + Math.max(getLeftCornerRadius(), getRightCornerRadius());
     }
 
+    /**
+     * Returns the bottom insets taskbar provides to the IME when IME is visible.
+     */
+    public int getTaskbarHeightForIme() {
+        return mTaskbarHeightForIme;
+    }
+
     protected void onTaskbarIconClicked(View view) {
         Object tag = view.getTag();
         if (tag instanceof Task) {