Tweaking styles for AllApps and widgets spaces. (Bug 10843502)

- Fixing various issues with Search bar showing when it shouldn't be.

Change-Id: I2a553ad93e3422666a883b90a1ff97625bf05831

src/com/android/launcher3/PagedViewIcon.java

@@ -18,6 +18,9 @@ package com.android.launcher3;
 
 import android.content.Context;
 import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Region;
+import android.graphics.Region.Op;
 import android.util.AttributeSet;
 import android.util.TypedValue;
 import android.widget.TextView;
@@ -99,4 +102,27 @@ public class PagedViewIcon extends TextView {
             setAlpha(1f);
         }
     }
+
+    @Override
+    public void draw(Canvas canvas) {
+        // If text is transparent, don't draw any shadow
+        if (getCurrentTextColor() == getResources().getColor(android.R.color.transparent)) {
+            getPaint().clearShadowLayer();
+            super.draw(canvas);
+            return;
+        }
+
+        // We enhance the shadow by drawing the shadow twice
+        getPaint().setShadowLayer(BubbleTextView.SHADOW_LARGE_RADIUS, 0.0f,
+                BubbleTextView.SHADOW_Y_OFFSET, BubbleTextView.SHADOW_LARGE_COLOUR);
+        super.draw(canvas);
+        canvas.save(Canvas.CLIP_SAVE_FLAG);
+        canvas.clipRect(getScrollX(), getScrollY() + getExtendedPaddingTop(),
+                getScrollX() + getWidth(),
+                getScrollY() + getHeight(), Region.Op.INTERSECT);
+        getPaint().setShadowLayer(BubbleTextView.SHADOW_SMALL_RADIUS, 0.0f, 0.0f,
+                BubbleTextView.SHADOW_SMALL_COLOUR);
+        super.draw(canvas);
+        canvas.restore();
+    }
 }