Grid change polish bugs.

- Folder icons were too small in landscape.
- Folders can now be 16dp away from the edge
  (used to be 64dp which resulted in super small folders)
- Decrease page spacing back to 8dp
- Decrease PreviewBackground accept scale factor since
  hotseat is now generally smaller.

Bug: 37014334
Bug: 37015359
Change-Id: Icbb53d34136bfdb93796d48f7379da6b9e214345

res/values-land/dimens.xml

@@ -27,8 +27,7 @@
     <!-- Dynamic grid -->
     <dimen name="dynamic_grid_overview_bar_item_width">120dp</dimen>
     <dimen name="dynamic_grid_page_indicator_size">24dp</dimen>
-    <dimen name="dynamic_grid_icon_drawable_padding">8dp</dimen>
-    <dimen name="dynamic_grid_cell_padding_x">8dp</dimen>
+    <dimen name="folder_preview_padding">5dp</dimen>
 
     <!-- Hotseat -->
     <dimen name="dynamic_grid_hotseat_land_left_nav_bar_right_padding">18dp</dimen>

src/com/android/launcher3/DeviceProfile.java

@@ -344,7 +344,7 @@ public class DeviceProfile {
         updateFolderCellSize(1f, dm, res);
 
         // Don't let the folder get too close to the edges of the screen.
-        int folderMargin = 4 * edgeMarginPx;
+        int folderMargin = edgeMarginPx;
 
         // Check if the icons fit within the available height.
         float usedHeight = folderCellHeightPx * inv.numFolderRows + folderBottomPanelSize;
@@ -497,7 +497,7 @@ public class DeviceProfile {
             // In portrait, we want the pages spaced such that there is no
             // overhang of the previous / next page into the current page viewport.
             // We assume symmetrical padding in portrait mode.
-            return Math.max(defaultPageSpacingPx, getWorkspacePadding(null).left + 1);
+            return Math.max(defaultPageSpacingPx, getWorkspacePadding(null).left / 2 + 1);
         }
     }
 

src/com/android/launcher3/folder/PreviewBackground.java

@@ -88,7 +88,7 @@ public class PreviewBackground {
     public boolean isClipping = true;
 
     // Drawing / animation configurations
-    private static final float ACCEPT_SCALE_FACTOR = 1.25f;
+    private static final float ACCEPT_SCALE_FACTOR = 1.20f;
     private static final float ACCEPT_COLOR_MULTIPLIER = 1.5f;
 
     // Expressed on a scale from 0 to 255.