Fix app to folder icon animation.

- Needed to account for the preview bounds (similar to BubbleTextView icon
  bounds)
- Also needed to update the bitmap shift amount so that it is re-centered
- Moved ShiftedBitmapDrawable to its own class in graphics package

Bug: 123900446
Change-Id: Ifa9e3f688e55d017cf86a0285f5cdb1b014f01e6

src/com/android/launcher3/Utilities.java

@@ -593,8 +593,9 @@ public final class Utilities {
         int viewLocationTop = rect.top;
 
         if (isBubbleTextView && !fromDeepShortcutView) {
-            BubbleTextView btv = (BubbleTextView) v;
-            btv.getIconBounds(rect);
+            ((BubbleTextView) v).getIconBounds(rect);
+        } else if (isFolderIcon) {
+            ((FolderIcon) v).getPreviewBounds(rect);
         } else {
             rect.set(0, 0, rect.width(), rect.height());
         }

src/com/android/launcher3/dragndrop/FolderAdaptiveIcon.java

@@ -36,6 +36,7 @@ import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.R;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.folder.PreviewBackground;
+import com.android.launcher3.graphics.ShiftedBitmapDrawable;
 import com.android.launcher3.icons.BitmapRenderer;
 import com.android.launcher3.util.Preconditions;
 
@@ -133,39 +134,4 @@ public class FolderAdaptiveIcon extends AdaptiveIconDrawable {
 
         return new FolderAdaptiveIcon(new ColorDrawable(bg.getBgColor()), foreground, badge, mask);
     }
-
-    /**
-     * A simple drawable which draws a bitmap at a fixed position irrespective of the bounds
-     */
-    private static class ShiftedBitmapDrawable extends Drawable {
-
-        private final Paint mPaint = new Paint(Paint.FILTER_BITMAP_FLAG);
-        private final Bitmap mBitmap;
-        private final float mShiftX;
-        private final float mShiftY;
-
-        ShiftedBitmapDrawable(Bitmap bitmap, float shiftX, float shiftY) {
-            mBitmap = bitmap;
-            mShiftX = shiftX;
-            mShiftY = shiftY;
-        }
-
-        @Override
-        public void draw(Canvas canvas) {
-            canvas.drawBitmap(mBitmap, mShiftX, mShiftY, mPaint);
-        }
-
-        @Override
-        public void setAlpha(int i) { }
-
-        @Override
-        public void setColorFilter(ColorFilter colorFilter) {
-            mPaint.setColorFilter(colorFilter);
-        }
-
-        @Override
-        public int getOpacity() {
-            return PixelFormat.TRANSLUCENT;
-        }
-    }
 }

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

@@ -189,6 +189,10 @@ public class FolderIcon extends FrameLayout implements FolderListener {
         return icon;
     }
 
+    public void getPreviewBounds(Rect outBounds) {
+        mBackground.getBounds(outBounds);
+    }
+
     public Folder getFolder() {
         return mFolder;
     }

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

@@ -33,6 +33,7 @@ import android.graphics.Path;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffXfermode;
 import android.graphics.RadialGradient;
+import android.graphics.Rect;
 import android.graphics.Region;
 import android.graphics.Shader;
 import android.util.Property;
@@ -154,6 +155,14 @@ public class PreviewBackground {
         invalidate();
     }
 
+    void getBounds(Rect outBounds) {
+        int top = basePreviewOffsetY;
+        int left = basePreviewOffsetX;
+        int right = left + previewSize;
+        int bottom = top + previewSize;
+        outBounds.set(left, top, right, bottom);
+    }
+
     int getRadius() {
         return previewSize / 2;
     }

src/com/android/launcher3/graphics/ShiftedBitmapDrawable.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.launcher3.graphics;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Paint;
+import android.graphics.PixelFormat;
+import android.graphics.drawable.Drawable;
+
+/**
+ * A simple drawable which draws a bitmap at a fixed position irrespective of the bounds
+ */
+public class ShiftedBitmapDrawable extends Drawable {
+
+    private final Paint mPaint = new Paint(Paint.FILTER_BITMAP_FLAG);
+    private final Bitmap mBitmap;
+    private float mShiftX;
+    private float mShiftY;
+
+    public ShiftedBitmapDrawable(Bitmap bitmap, float shiftX, float shiftY) {
+        mBitmap = bitmap;
+        mShiftX = shiftX;
+        mShiftY = shiftY;
+    }
+
+    public float getShiftX() {
+        return mShiftX;
+    }
+
+    public float getShiftY() {
+        return mShiftY;
+    }
+
+    public void setShiftX(float shiftX) {
+        mShiftX = shiftX;
+    }
+
+    public void setShiftY(float shiftY) {
+        mShiftY = shiftY;
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        canvas.drawBitmap(mBitmap, mShiftX, mShiftY, mPaint);
+    }
+
+    @Override
+    public void setAlpha(int i) { }
+
+    @Override
+    public void setColorFilter(ColorFilter colorFilter) {
+        mPaint.setColorFilter(colorFilter);
+    }
+
+    @Override
+    public int getOpacity() {
+        return PixelFormat.TRANSLUCENT;
+    }
+}

src/com/android/launcher3/views/FloatingIconView.java

@@ -43,7 +43,9 @@ import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.dragndrop.DragLayer;
+import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.folder.FolderShape;
+import com.android.launcher3.graphics.ShiftedBitmapDrawable;
 import com.android.launcher3.icons.LauncherIcons;
 
 import androidx.annotation.Nullable;
@@ -57,6 +59,8 @@ import static com.android.launcher3.config.FeatureFlags.ADAPTIVE_ICON_WINDOW_ANI
 
 public class FloatingIconView extends View implements Animator.AnimatorListener, ClipPathView {
 
+    private static final Rect sTmpRect = new Rect();
+
     private Runnable mStartRunnable;
     private Runnable mEndRunnable;
 
@@ -181,7 +185,7 @@ public class FloatingIconView extends View implements Animator.AnimatorListener,
     }
 
     @WorkerThread
-    private void getIcon(Launcher launcher, ItemInfo info, boolean useDrawableAsIs,
+    private void getIcon(Launcher launcher, View v, ItemInfo info, boolean useDrawableAsIs,
             float aspectRatio) {
         final LayoutParams lp = (LayoutParams) getLayoutParams();
         mDrawable = Utilities.getFullDrawable(launcher, info, lp.width, lp.height, new Object[1]);
@@ -205,6 +209,12 @@ public class FloatingIconView extends View implements Animator.AnimatorListener,
 
             int offset = getOffsetForAdaptiveIconBounds();
             mFinalDrawableBounds.set(offset, offset, lp.width - offset, mOriginalHeight - offset);
+            if (mForeground instanceof ShiftedBitmapDrawable && v instanceof FolderIcon) {
+                ShiftedBitmapDrawable sbd = (ShiftedBitmapDrawable) mForeground;
+                ((FolderIcon) v).getPreviewBounds(sTmpRect);
+                sbd.setShiftX(sbd.getShiftX() - sTmpRect.left);
+                sbd.setShiftY(sbd.getShiftY() - sTmpRect.top);
+            }
             mForeground.setBounds(mFinalDrawableBounds);
             mBackground.setBounds(mFinalDrawableBounds);
 
@@ -323,8 +333,8 @@ public class FloatingIconView extends View implements Animator.AnimatorListener,
         // Must be called after matchPositionOf so that we know what size to load.
         if (originalView.getTag() instanceof ItemInfo) {
             new Handler(LauncherModel.getWorkerLooper()).postAtFrontOfQueue(() -> {
-                view.getIcon(launcher, (ItemInfo) originalView.getTag(), useDrawableAsIs,
-                        aspectRatio);
+                view.getIcon(launcher, originalView, (ItemInfo) originalView.getTag(),
+                        useDrawableAsIs, aspectRatio);
             });
         }