Dyanmically lay out overview mode across all orientations and form factors.

Change-Id: I788bbf289717b30b19afc9ad9d611c85715bc623

res/layout-land/launcher.xml

@@ -77,19 +77,6 @@
             android:layout_height="match_parent"
             android:visibility="gone" />
 
-        <!-- TODO: Fix
-        <com.android.launcher3.DrawableStateProxyView
-            android:id="@+id/voice_button_proxy"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_gravity="top|start"
-            android:layout_marginTop="64dp"
-            android:clickable="true"
-            android:onClick="onClickVoiceButton"
-            android:importantForAccessibility="no"
-            launcher:sourceViewId="@+id/voice_button" />
-            -->
-
         <include layout="@layout/apps_customize_pane"
             android:id="@+id/apps_customize_pane"
             android:layout_width="match_parent"

res/layout/overview_panel.xml

@@ -13,18 +13,18 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<LinearLayout
+<FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
-    android:orientation="horizontal"
     android:layout_gravity="center_horizontal|bottom"
-    android:paddingBottom="@dimen/overview_panel_bottom_padding">
+    android:orientation="horizontal">
 
     <TextView
         android:id="@+id/wallpaper_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_gravity="start|top"
         android:text="@string/wallpaper_button_text"
         android:drawablePadding="4dp"
         android:drawableTop="@drawable/wallpaper_button"
@@ -32,13 +32,11 @@
         android:fontFamily="sans-serif-condensed"
         android:textAllCaps="true"
         android:textSize="12sp" />
-    <Space
-        android:layout_width="@dimen/overview_panel_buttonSpacing"
-        android:layout_height="wrap_content"/>
     <TextView
         android:id="@+id/widget_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal|top"
         android:text="@string/widget_button_text"
         android:drawablePadding="4dp"
         android:gravity="center_horizontal"
@@ -46,13 +44,11 @@
         android:fontFamily="sans-serif-condensed"
         android:textAllCaps="true"
         android:textSize="12sp"/>
-    <Space
-        android:layout_width="@dimen/overview_panel_buttonSpacing"
-        android:layout_height="wrap_content"/>
     <TextView
         android:id="@+id/settings_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_gravity="end|top"
         android:text="@string/settings_button_text"
         android:drawablePadding="4dp"
         android:gravity="center_horizontal"
@@ -60,4 +56,4 @@
         android:fontFamily="sans-serif-condensed"
         android:textAllCaps="true"
         android:textSize="12sp" />
-</LinearLayout>
+</FrameLayout>

res/values/config.xml

@@ -3,6 +3,10 @@
     <integer name="config_dynamic_grid_max_long_edge_cell_count">6</integer>
     <integer name="config_dynamic_grid_max_short_edge_cell_count">5</integer>
     <integer name="config_dynamic_grid_min_edge_cell_count">3</integer>
+    <!-- Out of 100, the percent of space the overview bar should try and take vertically. -->
+    <integer name="config_dynamic_grid_overview_icon_zone_percentage">20</integer>
+    <!-- Out of 100, the percent to shrink the workspace during overview mode. -->
+    <integer name="config_dynamic_grid_overview_scale_percentage">80</integer>
 
 <!-- Miscellaneous -->
     <bool name="config_largeHeap">false</bool>
@@ -24,8 +28,6 @@
 
     <!-- Out of 100, the percent to shrink the workspace during spring loaded mode. -->
     <integer name="config_workspaceSpringLoadShrinkPercentage">80</integer>
-    <!-- Out of 100, the percent to shrink the workspace during overview mode. -->
-    <integer name="config_workspaceOverviewShrinkPercentage">58</integer>
 
     <!-- Fade/zoom in/out duration & scale in the AllApps transition.
          Note: This should be less than the workspaceShrinkTime as they happen together. -->

res/values/dimens.xml

@@ -23,6 +23,9 @@
     <dimen name="dynamic_grid_icon_drawable_padding">4dp</dimen>
     <dimen name="dynamic_grid_all_apps_cell_padding">18dp</dimen>
     <dimen name="dynamic_grid_workspace_page_spacing">8dp</dimen>
+    <dimen name="dynamic_grid_overview_min_icon_zone_height">80dp</dimen>
+    <dimen name="dynamic_grid_overview_max_icon_zone_height">120dp</dimen>
+    <dimen name="dynamic_grid_overview_bar_max_width">280dp</dimen>
 
 <!-- Wallpaper picker -->
     <dimen name="wallpaperThumbnailWidth">106.5dp</dimen>
@@ -49,9 +52,6 @@
 <!-- Workspace -->
     <dimen name="workspace_max_gap">16dp</dimen>
     <dimen name="workspace_overscroll_drawable_padding">0dp</dimen>
-    <dimen name="overview_panel_bottom_padding">50dp</dimen>
-    <dimen name="overview_panel_buttonSpacing">60dp</dimen>
-    <dimen name="overview_mode_page_offset">130dp</dimen>
 
 <!-- QSB -->
     <dimen name="toolbar_button_vertical_padding">4dip</dimen>

src/com/android/launcher3/DynamicGrid.java

@@ -86,6 +86,12 @@ class DeviceProfile {
     int availableHeightPx;
     int defaultPageSpacingPx;
 
+    int overviewModeMinIconZoneHeightPx;
+    int overviewModeMaxIconZoneHeightPx;
+    int overviewModeMaxBarWidthPx;
+    float overviewModeIconZoneRatio;
+    float overviewModeScaleFactor;
+
     int iconSizePx;
     int iconTextSizePx;
     int iconDrawablePaddingPx;
@@ -158,6 +164,16 @@ class DeviceProfile {
                 res.getDimensionPixelSize(R.dimen.dynamic_grid_workspace_page_spacing);
         allAppsCellPaddingPx =
                 res.getDimensionPixelSize(R.dimen.dynamic_grid_all_apps_cell_padding);
+        overviewModeMinIconZoneHeightPx =
+                res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_min_icon_zone_height);
+        overviewModeMaxIconZoneHeightPx =
+                res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_max_icon_zone_height);
+        overviewModeMaxBarWidthPx =
+                res.getDimensionPixelSize(R.dimen.dynamic_grid_overview_bar_max_width);
+        overviewModeIconZoneRatio =
+                res.getInteger(R.integer.config_dynamic_grid_overview_icon_zone_percentage) / 100f;
+        overviewModeScaleFactor =
+                res.getInteger(R.integer.config_dynamic_grid_overview_scale_percentage) / 100f;
 
         // Interpolate the rows
         for (DeviceProfile p : profiles) {
@@ -454,6 +470,20 @@ class DeviceProfile {
         }
     }
 
+    Rect getOverviewModeButtonBarRect() {
+        int zoneHeight = (int) (overviewModeIconZoneRatio * availableHeightPx);
+        zoneHeight = Math.min(overviewModeMaxIconZoneHeightPx,
+                Math.max(overviewModeMinIconZoneHeightPx, zoneHeight));
+        return new Rect(0, availableHeightPx - zoneHeight, 0, availableHeightPx);
+    }
+
+    float getOverviewModeScale() {
+        Rect workspacePadding = getWorkspacePadding();
+        Rect overviewBar = getOverviewModeButtonBarRect();
+        int pageSpace = availableHeightPx - workspacePadding.top - workspacePadding.bottom;
+        return (overviewModeScaleFactor * (pageSpace - overviewBar.height())) / pageSpace;
+    }
+
     // The rect returned will be extended to below the system ui that covers the workspace
     Rect getHotseatRect() {
         if (isVerticalBarLayout()) {
@@ -601,6 +631,7 @@ class DeviceProfile {
             }
         }
 
+        // Layout AllApps
         AppsCustomizeTabHost host = (AppsCustomizeTabHost)
                 launcher.findViewById(R.id.apps_customize_pane);
         if (host != null) {
@@ -639,6 +670,17 @@ class DeviceProfile {
                 pagedView.setWidgetsPageIndicatorPadding(pageIndicatorHeight);
             }
         }
+
+        // Layout the Overview Mode
+        View overviewMode = launcher.getOverviewPanel();
+        if (overviewMode != null) {
+            Rect r = getOverviewModeButtonBarRect();
+            lp = (FrameLayout.LayoutParams) overviewMode.getLayoutParams();
+            lp.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
+            lp.width = Math.min(availableWidthPx, overviewModeMaxBarWidthPx);
+            lp.height = r.height();
+            overviewMode.setLayoutParams(lp);
+        }
     }
 }
 

src/com/android/launcher3/PagedView.java

@@ -786,14 +786,14 @@ public abstract class PagedView extends ViewGroup implements ViewGroup.OnHierarc
         int widthSize = MeasureSpec.getSize(widthMeasureSpec);
         int heightMode = MeasureSpec.getMode(heightMeasureSpec);
         int heightSize = MeasureSpec.getSize(heightMeasureSpec);
-        // NOTE: We multiply by 1.5f to account for the fact that depending on the offset of the
+        // NOTE: We multiply by 2f to account for the fact that depending on the offset of the
         // viewport, we can be at most one and a half screens offset once we scale down
         DisplayMetrics dm = getResources().getDisplayMetrics();
         int maxSize = Math.max(dm.widthPixels + mInsets.left + mInsets.right,
                 dm.heightPixels + mInsets.top + mInsets.bottom);
 
-        int parentWidthSize = (int) (1.5f * maxSize);
-        int parentHeightSize = maxSize;
+        int parentWidthSize = (int) (2f * maxSize);
+        int parentHeightSize = (int) (2f * maxSize);
         int scaledWidthSize, scaledHeightSize;
         if (mUseMinScale) {
             scaledWidthSize = (int) (parentWidthSize / mMinScale);

src/com/android/launcher3/Workspace.java

@@ -184,7 +184,6 @@ public class Workspace extends SmoothPagedView
     private SpringLoadedDragController mSpringLoadedDragController;
     private float mSpringLoadedShrinkFactor;
     private float mOverviewModeShrinkFactor;
-    private int mOverviewModePageOffset;
 
     // State variable that indicates whether the pages are small (ie when you're
     // in all apps or customize mode)
@@ -315,13 +314,13 @@ public class Workspace extends SmoothPagedView
         mFadeInAdjacentScreens = false;
         mWallpaperManager = WallpaperManager.getInstance(context);
 
+        LauncherAppState app = LauncherAppState.getInstance();
+        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
         TypedArray a = context.obtainStyledAttributes(attrs,
                 R.styleable.Workspace, defStyle, 0);
         mSpringLoadedShrinkFactor =
             res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f;
-        mOverviewModeShrinkFactor =
-                res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100.0f;
-        mOverviewModePageOffset = res.getDimensionPixelSize(R.dimen.overview_mode_page_offset);
+        mOverviewModeShrinkFactor = grid.getOverviewModeScale();
         mCameraDistance = res.getInteger(R.integer.config_cameraDistance);
         mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1);
         a.recycle();
@@ -417,10 +416,8 @@ public class Workspace extends SmoothPagedView
         setClipChildren(false);
         setClipToPadding(false);
         setChildrenDrawnWithCacheEnabled(true);
-
-        // This is a bit of a hack to account for the fact that we translate the workspace
-        // up a bit, and still need to draw the background covering the whole screen.
-        setMinScale(mOverviewModeShrinkFactor - 0.2f);
+        
+        setMinScale(mOverviewModeShrinkFactor);
         setupLayoutTransition();
 
         final Resources res = getResources();
@@ -1998,14 +1995,17 @@ public class Workspace extends SmoothPagedView
     }
 
     int getOverviewModeTranslationY() {
-        int childHeight = getNormalChildHeight();
-        int viewPortHeight = getViewportHeight();
-        int scaledChildHeight = (int) (mOverviewModeShrinkFactor * childHeight);
+        LauncherAppState app = LauncherAppState.getInstance();
+        DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
+        Rect overviewBar = grid.getOverviewModeButtonBarRect();
 
-        int offset = (viewPortHeight - scaledChildHeight) / 2;
-        int offsetDelta = mOverviewModePageOffset - offset + mInsets.top;
+        int availableHeight = getViewportHeight();
+        int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight());
+        int offsetFromTopEdge = (availableHeight - scaledHeight) / 2;
+        int offsetToCenterInOverview = (availableHeight - mInsets.top - overviewBar.height()
+                - scaledHeight) / 2;
 
-        return offsetDelta;
+        return -offsetFromTopEdge + mInsets.top + offsetToCenterInOverview;
     }
 
     boolean shouldVoiceButtonProxyBeVisible() {