commit 19b93b7988c12a25d9a88ca808d871916263ef9f
author Sunny Goyal <sunnygoyal@google.com> Sun Feb 19 20:21:37 2017 -0800
committer Sunny Goyal <sunnygoyal@google.com> Fri Mar 03 12:51:26 2017 -0800
tree a82ed769d61b543100be2e162da149c63d973b74
parent 4ff3457e77915b596cfa896a4f98283ace2314de

Updating FolderIcon drawing to avoid dependency on software layer.

Instead of cliping using clipPath, using PorterDuffXfermode to clear
area outside the bounds. This provides much better support for antialiasing.
Software layer was also being used for drawing shadow. But since the paint
color was set to transparent, no shadow was being drawn in O. Instead drawing
the shadow using radial gradient.

Bug: 35680116
Bug: 35428783
Change-Id: I0431664400628d5d01675fe72fe7ade01b64d611

src/com/android/launcher3/CellLayout.java

diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index e0fcbf0..8179dad 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -105,7 +105,6 @@
 
     private ArrayList<FolderIcon.PreviewBackground> mFolderBackgrounds = new ArrayList<FolderIcon.PreviewBackground>();
     FolderIcon.PreviewBackground mFolderLeaveBehind = new FolderIcon.PreviewBackground();
-    Paint mFolderBgPaint = new Paint();
 
     private float mBackgroundAlpha;
 
@@ -501,9 +500,9 @@
             cellToPoint(bg.delegateCellX, bg.delegateCellY, mTempLocation);
             canvas.save();
             canvas.translate(mTempLocation[0], mTempLocation[1]);
-            bg.drawBackground(canvas, mFolderBgPaint);
+            bg.drawBackground(canvas);
             if (!bg.isClipping) {
-                bg.drawBackgroundStroke(canvas, mFolderBgPaint);
+                bg.drawBackgroundStroke(canvas);
             }
             canvas.restore();
         }
@@ -513,7 +512,7 @@
                     mFolderLeaveBehind.delegateCellY, mTempLocation);
             canvas.save();
             canvas.translate(mTempLocation[0], mTempLocation[1]);
-            mFolderLeaveBehind.drawLeaveBehind(canvas, mFolderBgPaint);
+            mFolderLeaveBehind.drawLeaveBehind(canvas);
             canvas.restore();
         }
     }
@@ -528,7 +527,7 @@
                 cellToPoint(bg.delegateCellX, bg.delegateCellY, mTempLocation);
                 canvas.save();
                 canvas.translate(mTempLocation[0], mTempLocation[1]);
-                bg.drawBackgroundStroke(canvas, mFolderBgPaint);
+                bg.drawBackgroundStroke(canvas);
                 canvas.restore();
             }
         }