Use less icons in hotseat when in 3 button nav for tablet

- We have less space on tablets when 3 button nav is enabled because QSB is now inline with the icons. This creates a new attribute to define how many icons should be shown when in that mode. This could be used for other grids in the future as well.
- InvariantDeviceProfile now listens for nav mode changes

Fixes 214882090, 221420204
Test: manual

Change-Id: I012432a1a322c4e5505e46a1198c841ab124aaa6
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 97c0f38..cd9bbf7 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -34,7 +34,6 @@
 
 import com.android.launcher3.CellLayout.ContainerType;
 import com.android.launcher3.DevicePaddings.DevicePadding;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.DotRenderer;
 import com.android.launcher3.icons.GraphicsUtils;
 import com.android.launcher3.icons.IconNormalizer;
@@ -59,6 +58,7 @@
 
     // Device properties
     public final boolean isTablet;
+    public final boolean isLargeTablet;
     public final boolean isPhone;
     public final boolean transposeLayoutWithOrientation;
     public final boolean isTwoPanels;
@@ -67,6 +67,7 @@
     // Device properties in current orientation
     public final boolean isLandscape;
     public final boolean isMultiWindowMode;
+    public final boolean isGestureMode;
 
     public final int windowX;
     public final int windowY;
@@ -229,12 +230,13 @@
     /** TODO: Once we fully migrate to staged split, remove "isMultiWindowMode" */
     DeviceProfile(Context context, InvariantDeviceProfile inv, Info info, WindowBounds windowBounds,
             boolean isMultiWindowMode, boolean transposeLayoutWithOrientation,
-            boolean useTwoPanels) {
+            boolean useTwoPanels, boolean isGestureMode) {
 
         this.inv = inv;
         this.isLandscape = windowBounds.isLandscape();
         this.isMultiWindowMode = isMultiWindowMode;
         this.transposeLayoutWithOrientation = transposeLayoutWithOrientation;
+        this.isGestureMode = isGestureMode;
         windowX = windowBounds.bounds.left;
         windowY = windowBounds.bounds.top;
 
@@ -243,6 +245,7 @@
         // Determine device posture.
         mInfo = info;
         isTablet = info.isTablet(windowBounds);
+        isLargeTablet = info.isLargeTablet(windowBounds);
         isPhone = !isTablet;
         isTwoPanels = isTablet && useTwoPanels;
         isTaskbarPresent = isTablet && ApiWrapper.TASKBAR_DRAWN_IN_PROCESS;
@@ -343,9 +346,15 @@
         workspaceCellPaddingXPx = res.getDimensionPixelSize(R.dimen.dynamic_grid_cell_padding_x);
 
         hotseatQsbHeight = res.getDimensionPixelSize(R.dimen.qsb_widget_height);
-        isQsbInline = isTablet && isLandscape && !isTwoPanels && hotseatQsbHeight > 0;
-        numShownHotseatIcons =
-                isTwoPanels ? inv.numDatabaseHotseatIcons : inv.numShownHotseatIcons;
+        isQsbInline = isLargeTablet && isLandscape && hotseatQsbHeight > 0;
+
+        if (isTaskbarPresent && !isGestureMode && isQsbInline) {
+            numShownHotseatIcons = inv.numShrunkenHotseatIcons;
+        } else {
+            numShownHotseatIcons =
+                    isTwoPanels ? inv.numDatabaseHotseatIcons : inv.numShownHotseatIcons;
+        }
+
         numShownAllAppsColumns =
                 isTwoPanels ? inv.numDatabaseAllAppsColumns : inv.numAllAppsColumns;
         hotseatBarSizeExtraSpacePx = 0;
@@ -540,7 +549,8 @@
         return new Builder(context, inv, mInfo)
                 .setWindowBounds(bounds)
                 .setUseTwoPanels(isTwoPanels)
-                .setMultiWindowMode(isMultiWindowMode);
+                .setMultiWindowMode(isMultiWindowMode)
+                .setGestureMode(isGestureMode);
     }
 
     public DeviceProfile copy(Context context) {
@@ -1081,9 +1091,11 @@
         writer.println(prefix + "\t1 dp = " + mMetrics.density + " px");
 
         writer.println(prefix + "\tisTablet:" + isTablet);
+        writer.println(prefix + "\tisLargeTablet:" + isLargeTablet);
         writer.println(prefix + "\tisPhone:" + isPhone);
         writer.println(prefix + "\ttransposeLayoutWithOrientation:"
                 + transposeLayoutWithOrientation);
+        writer.println(prefix + "\tisGestureMode:" + isGestureMode);
 
         writer.println(prefix + "\tisLandscape:" + isLandscape);
         writer.println(prefix + "\tisMultiWindowMode:" + isMultiWindowMode);
@@ -1266,6 +1278,7 @@
 
         private boolean mIsMultiWindowMode = false;
         private Boolean mTransposeLayoutWithOrientation;
+        private Boolean mIsGestureMode;
 
         public Builder(Context context, InvariantDeviceProfile inv, Info info) {
             mContext = context;
@@ -1294,6 +1307,11 @@
             return this;
         }
 
+        public Builder setGestureMode(boolean isGestureMode) {
+            mIsGestureMode = isGestureMode;
+            return this;
+        }
+
         public DeviceProfile build() {
             if (mWindowBounds == null) {
                 throw new IllegalArgumentException("Window bounds not set");
@@ -1301,8 +1319,11 @@
             if (mTransposeLayoutWithOrientation == null) {
                 mTransposeLayoutWithOrientation = !mInfo.isTablet(mWindowBounds);
             }
-            return new DeviceProfile(mContext, mInv, mInfo, mWindowBounds,
-                    mIsMultiWindowMode, mTransposeLayoutWithOrientation, mUseTwoPanels);
+            if (mIsGestureMode == null) {
+                mIsGestureMode = DisplayController.getNavigationMode(mContext).hasGestures;
+            }
+            return new DeviceProfile(mContext, mInv, mInfo, mWindowBounds, mIsMultiWindowMode,
+                    mTransposeLayoutWithOrientation, mUseTwoPanels, mIsGestureMode);
         }
     }
 
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index dfe4bb0..886c657 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -19,6 +19,7 @@
 import static com.android.launcher3.Utilities.dpiFromPx;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_TWO_PANEL_HOME;
 import static com.android.launcher3.util.DisplayController.CHANGE_DENSITY;
+import static com.android.launcher3.util.DisplayController.CHANGE_NAVIGATION_MODE;
 import static com.android.launcher3.util.DisplayController.CHANGE_SUPPORTED_BOUNDS;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 
@@ -138,6 +139,11 @@
     public int numShownHotseatIcons;
 
     /**
+     * Number of icons inside the hotseat area when using 3 buttons navigation.
+     */
+    public int numShrunkenHotseatIcons;
+
+    /**
      * Number of icons inside the hotseat area that is stored in the database. This is greater than
      * or equal to numnShownHotseatIcons, allowing for a seamless transition between two hotseat
      * sizes that share the same DB.
@@ -188,7 +194,8 @@
 
         DisplayController.INSTANCE.get(context).setPriorityListener(
                 (displayContext, info, flags) -> {
-                    if ((flags & (CHANGE_DENSITY | CHANGE_SUPPORTED_BOUNDS)) != 0) {
+                    if ((flags & (CHANGE_DENSITY | CHANGE_SUPPORTED_BOUNDS
+                            | CHANGE_NAVIGATION_MODE)) != 0) {
                         onConfigChanged(displayContext);
                     }
                 });
@@ -336,6 +343,7 @@
         horizontalMargin = displayOption.horizontalMargin;
 
         numShownHotseatIcons = closestProfile.numHotseatIcons;
+        numShrunkenHotseatIcons = closestProfile.numShrunkenHotseatIcons;
         numDatabaseHotseatIcons = deviceType == TYPE_MULTI_DISPLAY
                 ? closestProfile.numDatabaseHotseatIcons : closestProfile.numHotseatIcons;
         hotseatBorderSpaces = displayOption.hotseatBorderSpaces;
@@ -365,7 +373,8 @@
         for (WindowBounds bounds : displayInfo.supportedBounds) {
             localSupportedProfiles.add(new DeviceProfile.Builder(context, this, displayInfo)
                     .setUseTwoPanels(deviceType == TYPE_MULTI_DISPLAY)
-                    .setWindowBounds(bounds).build());
+                    .setWindowBounds(bounds)
+                    .build());
 
             // Wallpaper size should be the maximum of the all possible sizes Launcher expects
             int displayWidth = bounds.bounds.width();
@@ -691,6 +700,7 @@
         private final int numAllAppsColumns;
         private final int numDatabaseAllAppsColumns;
         private final int numHotseatIcons;
+        private final int numShrunkenHotseatIcons;
         private final int numDatabaseHotseatIcons;
 
         private final String dbFile;
@@ -727,6 +737,8 @@
 
             numHotseatIcons = a.getInt(
                     R.styleable.GridDisplayOption_numHotseatIcons, numColumns);
+            numShrunkenHotseatIcons = a.getInt(
+                    R.styleable.GridDisplayOption_numShrunkenHotseatIcons, numHotseatIcons / 2);
             numDatabaseHotseatIcons = a.getInt(
                     R.styleable.GridDisplayOption_numExtendedHotseatIcons, 2 * numHotseatIcons);
 
diff --git a/src/com/android/launcher3/util/DisplayController.java b/src/com/android/launcher3/util/DisplayController.java
index 5f41192..f944d3c 100644
--- a/src/com/android/launcher3/util/DisplayController.java
+++ b/src/com/android/launcher3/util/DisplayController.java
@@ -26,6 +26,7 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_NAVIGATION_MODE_GESTURE_BUTTON;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.PackageManagerHelper.getPackageFilter;
+import static com.android.launcher3.util.WindowManagerCompat.MIN_LARGE_TABLET_WIDTH;
 import static com.android.launcher3.util.WindowManagerCompat.MIN_TABLET_WIDTH;
 
 import static java.util.Collections.emptyMap;
@@ -369,12 +370,20 @@
         }
 
         /**
-         * Returns true if the bounds represent a tablet
+         * Returns {@code true} if the bounds represent a tablet.
          */
         public boolean isTablet(WindowBounds bounds) {
             return dpiFromPx(Math.min(bounds.bounds.width(), bounds.bounds.height()),
                     densityDpi) >= MIN_TABLET_WIDTH;
         }
+
+        /**
+         * Returns {@code true} if the bounds represent a large tablet.
+         */
+        public boolean isLargeTablet(WindowBounds bounds) {
+            return dpiFromPx(Math.min(bounds.bounds.width(), bounds.bounds.height()),
+                    densityDpi) >= MIN_LARGE_TABLET_WIDTH;
+        }
     }
 
     /**
diff --git a/src/com/android/launcher3/util/WindowManagerCompat.java b/src/com/android/launcher3/util/WindowManagerCompat.java
index e1b9478..873a518 100644
--- a/src/com/android/launcher3/util/WindowManagerCompat.java
+++ b/src/com/android/launcher3/util/WindowManagerCompat.java
@@ -45,6 +45,7 @@
 public class WindowManagerCompat {
 
     public static final int MIN_TABLET_WIDTH = 600;
+    public static final int MIN_LARGE_TABLET_WIDTH = 720;
 
     /**
      * Returns a set of supported render sizes for a internal display.