Merge "Fix accounting for the position/offset of headers with collapsing views" into sc-dev
diff --git a/res/layout/all_apps.xml b/res/layout/all_apps.xml
index b570464..9ac6ed0 100644
--- a/res/layout/all_apps.xml
+++ b/res/layout/all_apps.xml
@@ -36,6 +36,7 @@
         android:layout_below="@id/search_container_all_apps"
         android:clipToPadding="false"
         android:paddingTop="@dimen/all_apps_header_top_padding"
+        android:paddingBottom="@dimen/all_apps_header_bottom_padding"
         android:orientation="vertical" >
 
         <include layout="@layout/floating_header_content" />
diff --git a/res/layout/all_apps_personal_work_tabs.xml b/res/layout/all_apps_personal_work_tabs.xml
index ebb69f6..cfaa261 100644
--- a/res/layout/all_apps_personal_work_tabs.xml
+++ b/res/layout/all_apps_personal_work_tabs.xml
@@ -31,7 +31,7 @@
         android:background="@drawable/personal_work_tabs_ripple"
         android:text="@string/all_apps_personal_tab"
         android:textColor="@color/all_apps_tab_text"
-        android:textSize="16sp" />
+        android:textSize="14sp" />
 
     <Button
         android:id="@+id/tab_work"
@@ -41,5 +41,5 @@
         android:background="@drawable/personal_work_tabs_ripple"
         android:text="@string/all_apps_work_tab"
         android:textColor="@color/all_apps_tab_text"
-        android:textSize="16sp" />
+        android:textSize="14sp" />
 </com.android.launcher3.workprofile.PersonalWorkSlidingTabStrip>
\ No newline at end of file
diff --git a/res/layout/user_folder_icon_normalized.xml b/res/layout/user_folder_icon_normalized.xml
index 8b18857..15131f1 100644
--- a/res/layout/user_folder_icon_normalized.xml
+++ b/res/layout/user_folder_icon_normalized.xml
@@ -18,7 +18,6 @@
     xmlns:launcher="http://schemas.android.com/apk/res-auto"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
-    android:background="@drawable/round_rect_folder"
     android:orientation="vertical" >
 
     <com.android.launcher3.folder.FolderPagedView
diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index dc33ab8..92deb68 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -57,8 +57,9 @@
             <enum name="folder" value="2" />
             <enum name="widget_section" value="3" />
             <enum name="shortcut_popup" value="4" />
-            <enum name="hero_app" value="5" />
-            <enum name="taskbar" value="6" />
+            <enum name="taskbar" value="5" />
+            <enum name="search_result_tall" value="6" />
+            <enum name="search_result_small" value="7" />
         </attr>
         <attr name="centerVertically" format="boolean" />
     </declare-styleable>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index f9d62a6..d065611 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -97,6 +97,7 @@
     <dimen name="all_apps_header_tab_height">48dp</dimen>
     <dimen name="all_apps_tabs_indicator_height">2dp</dimen>
     <dimen name="all_apps_header_top_padding">36dp</dimen>
+    <dimen name="all_apps_header_bottom_padding">16dp</dimen>
     <dimen name="all_apps_work_profile_tab_footer_top_padding">16dp</dimen>
     <dimen name="all_apps_work_profile_tab_footer_bottom_padding">20dp</dimen>
     <dimen name="all_apps_tabs_vertical_padding">6dp</dimen>
@@ -311,4 +312,7 @@
     <dimen name="grid_visualization_rounding_radius">22dp</dimen>
     <dimen name="grid_visualization_cell_spacing">6dp</dimen>
 
+<!-- Search results related parameters -->
+    <dimen name="search_row_icon_size">48dp</dimen>
+    <dimen name="search_row_small_icon_size">32dp</dimen>
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 0c389aa..86dcf4c 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -315,5 +315,6 @@
 
     <style name="AddItemActivityTheme" parent="@android:style/Theme.Translucent.NoTitleBar">
         <item name="widgetsTheme">@style/WidgetContainerTheme</item>
+        <item name="android:windowLightStatusBar">true</item>
     </style>
 </resources>
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index 4f0ef12..ddbd425 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -80,8 +80,9 @@
     private static final int DISPLAY_WORKSPACE = 0;
     private static final int DISPLAY_ALL_APPS = 1;
     private static final int DISPLAY_FOLDER = 2;
-    private static final int DISPLAY_HERO_APP = 5;
-    protected static final int DISPLAY_TASKBAR = 6;
+    protected static final int DISPLAY_TASKBAR = 5;
+    private static final int DISPLAY_SEARCH_RESULT = 6;
+    private static final int DISPLAY_SEARCH_RESULT_SMALL = 7;
 
     private static final int[] STATE_PRESSED = new int[]{android.R.attr.state_pressed};
     private static final float HIGHLIGHT_SCALE = 1.16f;
@@ -187,8 +188,11 @@
             setTextSize(TypedValue.COMPLEX_UNIT_PX, grid.folderChildTextSizePx);
             setCompoundDrawablePadding(grid.folderChildDrawablePaddingPx);
             defaultIconSize = grid.folderChildIconSizePx;
-        } else if (mDisplay == DISPLAY_HERO_APP) {
-            defaultIconSize = grid.allAppsIconSizePx;
+        } else if (mDisplay == DISPLAY_SEARCH_RESULT) {
+            defaultIconSize = getResources().getDimensionPixelSize(R.dimen.search_row_icon_size);
+        } else if (mDisplay == DISPLAY_SEARCH_RESULT_SMALL) {
+            defaultIconSize = getResources().getDimensionPixelSize(
+                    R.dimen.search_row_small_icon_size);
         } else if (mDisplay == DISPLAY_TASKBAR) {
             defaultIconSize = grid.iconSizePx;
         } else {
diff --git a/src/com/android/launcher3/anim/AlphaUpdateListener.java b/src/com/android/launcher3/anim/AlphaUpdateListener.java
index eabd283..8dad1b4 100644
--- a/src/com/android/launcher3/anim/AlphaUpdateListener.java
+++ b/src/com/android/launcher3/anim/AlphaUpdateListener.java
@@ -17,6 +17,7 @@
 package com.android.launcher3.anim;
 
 import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
 import android.animation.ValueAnimator;
 import android.animation.ValueAnimator.AnimatorUpdateListener;
 import android.view.View;
@@ -25,7 +26,7 @@
 /**
  * A convenience class to update a view's visibility state after an alpha animation.
  */
-public class AlphaUpdateListener extends AnimationSuccessListener
+public class AlphaUpdateListener extends AnimatorListenerAdapter
         implements AnimatorUpdateListener {
     public static final float ALPHA_CUTOFF_THRESHOLD = 0.01f;
 
@@ -41,7 +42,7 @@
     }
 
     @Override
-    public void onAnimationSuccess(Animator animator) {
+    public void onAnimationEnd(Animator animator) {
         updateVisibility(mView);
     }
 
diff --git a/src/com/android/launcher3/folder/ClippedFolderIconLayoutRule.java b/src/com/android/launcher3/folder/ClippedFolderIconLayoutRule.java
index c67efef..68bed44 100644
--- a/src/com/android/launcher3/folder/ClippedFolderIconLayoutRule.java
+++ b/src/com/android/launcher3/folder/ClippedFolderIconLayoutRule.java
@@ -5,10 +5,10 @@
     public static final int MAX_NUM_ITEMS_IN_PREVIEW = 4;
     private static final int MIN_NUM_ITEMS_IN_PREVIEW = 2;
 
-    private static final float MIN_SCALE = 0.48f;
-    private static final float MAX_SCALE = 0.58f;
-    private static final float MAX_RADIUS_DILATION = 0.15f;
-    private static final float ITEM_RADIUS_SCALE_FACTOR = 1.33f;
+    private static final float MIN_SCALE = 0.44f;
+    private static final float MAX_SCALE = 0.54f;
+    private static final float MAX_RADIUS_DILATION = 0.10f;
+    private static final float ITEM_RADIUS_SCALE_FACTOR = 1.2f;
 
     public static final int EXIT_INDEX = -2;
     public static final int ENTER_INDEX = -3;
@@ -130,10 +130,8 @@
     public float scaleForItem(int numItems) {
         // Scale is determined by the number of items in the preview.
         final float scale;
-        if (numItems <= 2) {
+        if (numItems <= 3) {
             scale = MAX_SCALE;
-        } else if (numItems == 3) {
-            scale = (MAX_SCALE + MIN_SCALE) / 2;
         } else {
             scale = MIN_SCALE;
         }
diff --git a/src/com/android/launcher3/folder/Folder.java b/src/com/android/launcher3/folder/Folder.java
index e387627..17c1329 100644
--- a/src/com/android/launcher3/folder/Folder.java
+++ b/src/com/android/launcher3/folder/Folder.java
@@ -41,6 +41,7 @@
 import android.graphics.Path;
 import android.graphics.Rect;
 import android.graphics.RectF;
+import android.graphics.drawable.Drawable;
 import android.graphics.drawable.GradientDrawable;
 import android.os.Build;
 import android.text.InputType;
@@ -67,6 +68,7 @@
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
+import androidx.core.content.res.ResourcesCompat;
 import androidx.core.graphics.ColorUtils;
 
 import com.android.launcher3.AbstractFloatingView;
@@ -250,6 +252,8 @@
     // so that we can cancel it when starting mColorChangeAnimator.
     private ObjectAnimator mOpenAnimationColorChangeAnimator;
 
+    private GradientDrawable mBackground;
+
     /**
      * Used to inflate the Workspace from XML.
      *
@@ -268,6 +272,12 @@
         // name is complete, we have something to focus on, thus hiding the cursor and giving
         // reliable behavior when clicking the text field (since it will always gain focus on click).
         setFocusableInTouchMode(true);
+
+    }
+
+    @Override
+    public Drawable getBackground() {
+        return mBackground;
     }
 
     @Override
@@ -276,6 +286,9 @@
         final DeviceProfile dp = mActivityContext.getDeviceProfile();
         final int paddingLeftRight = dp.folderContentPaddingLeftRight;
 
+        mBackground = (GradientDrawable) ResourcesCompat.getDrawable(getResources(),
+                R.drawable.round_rect_folder, getContext().getTheme());
+
         mContent = findViewById(R.id.folder_content);
         mContent.setPadding(paddingLeftRight, dp.folderContentPaddingTop, paddingLeftRight, 0);
         mContent.setFolder(this);
@@ -1213,6 +1226,8 @@
         lp.x = left;
         lp.y = top;
 
+        mBackground.setBounds(0, 0, width, height);
+
         if (mColorExtractor != null) {
             mColorExtractor.removeLocations();
             mColorExtractor.setListener(mColorListener);
@@ -1714,14 +1729,16 @@
     }
 
     @Override
-    public void draw(Canvas canvas) {
+    protected void dispatchDraw(Canvas canvas) {
         if (mClipPath != null) {
             int count = canvas.save();
             canvas.clipPath(mClipPath);
-            super.draw(canvas);
+            mBackground.draw(canvas);
             canvas.restoreToCount(count);
+            super.dispatchDraw(canvas);
         } else {
-            super.draw(canvas);
+            mBackground.draw(canvas);
+            super.dispatchDraw(canvas);
         }
     }
 
diff --git a/src/com/android/launcher3/folder/FolderAnimationManager.java b/src/com/android/launcher3/folder/FolderAnimationManager.java
index 7fbfb89..bd0dbfd 100644
--- a/src/com/android/launcher3/folder/FolderAnimationManager.java
+++ b/src/com/android/launcher3/folder/FolderAnimationManager.java
@@ -37,6 +37,7 @@
 
 import com.android.launcher3.BubbleTextView;
 import com.android.launcher3.CellLayout;
+import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Utilities;
@@ -80,6 +81,8 @@
 
     private ObjectAnimator mBgColorAnimator;
 
+    private DeviceProfile mDeviceProfile;
+
     public FolderAnimationManager(Folder folder, boolean isOpening) {
         mFolder = folder;
         mContent = folder.mContent;
@@ -89,7 +92,8 @@
         mPreviewBackground = mFolderIcon.mBackground;
 
         mContext = folder.getContext();
-        mPreviewVerifier = new FolderGridOrganizer(folder.mActivityContext.getDeviceProfile().inv);
+        mDeviceProfile = folder.mActivityContext.getDeviceProfile();
+        mPreviewVerifier = new FolderGridOrganizer(mDeviceProfile.inv);
 
         mIsOpening = isOpening;
 
@@ -211,8 +215,21 @@
         play(a, getAnimator(mFolder.mContent, SCALE_PROPERTY, initialScale, finalScale));
         play(a, getAnimator(mFolder.mFooter, SCALE_PROPERTY, initialScale, finalScale));
         play(a, mFolderIcon.mFolderName.createTextAlphaAnimator(!mIsOpening));
+
+        // Create reveal animator for the folder background
         play(a, getShape().createRevealAnimator(
                 mFolder, startRect, endRect, finalRadius, !mIsOpening));
+
+        // Create reveal animator for the folder content (capture the top 4 icons 2x2)
+        int width = mContent.getPaddingLeft() + mDeviceProfile.folderCellLayoutBorderSpacingPx
+                + mDeviceProfile.folderCellWidthPx * 2;
+        int height = mContent.getPaddingTop() + mDeviceProfile.folderCellLayoutBorderSpacingPx
+                + mDeviceProfile.folderCellHeightPx * 2;
+        Rect startRect2 = new Rect(0, 0, width, height);
+        play(a, getShape().createRevealAnimator(
+                mFolder.getContent(), startRect2, endRect, finalRadius, !mIsOpening));
+
+
         // Fade in the folder name, as the text can overlap the icons when grid size is small.
         mFolder.mFolderName.setAlpha(mIsOpening ? 0f : 1f);
         play(a, getAnimator(mFolder.mFolderName, View.ALPHA, 0, 1),
diff --git a/src/com/android/launcher3/folder/FolderIcon.java b/src/com/android/launcher3/folder/FolderIcon.java
index 279c445..6b12d86 100644
--- a/src/com/android/launcher3/folder/FolderIcon.java
+++ b/src/com/android/launcher3/folder/FolderIcon.java
@@ -614,10 +614,7 @@
 
         if (mCurrentPreviewItems.isEmpty() && !mAnimating) return;
 
-        final int saveCount = canvas.save();
-        canvas.clipPath(mBackground.getClipPath());
         mPreviewItemManager.draw(canvas);
-        canvas.restoreToCount(saveCount);
 
         if (!mBackground.drawingDelegated()) {
             mBackground.drawBackgroundStroke(canvas);
diff --git a/src/com/android/launcher3/folder/FolderPagedView.java b/src/com/android/launcher3/folder/FolderPagedView.java
index 7fc3740..3d2884a 100644
--- a/src/com/android/launcher3/folder/FolderPagedView.java
+++ b/src/com/android/launcher3/folder/FolderPagedView.java
@@ -22,6 +22,7 @@
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Canvas;
+import android.graphics.Path;
 import android.graphics.drawable.Drawable;
 import android.util.ArrayMap;
 import android.util.AttributeSet;
@@ -49,6 +50,7 @@
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.util.ViewCache;
 import com.android.launcher3.views.ActivityContext;
+import com.android.launcher3.views.ClipPathView;
 
 import java.util.ArrayList;
 import java.util.Iterator;
@@ -57,7 +59,7 @@
 import java.util.function.ToIntFunction;
 import java.util.stream.Collectors;
 
-public class FolderPagedView extends PagedView<PageIndicatorDots> {
+public class FolderPagedView extends PagedView<PageIndicatorDots> implements ClipPathView {
 
     private static final String TAG = "FolderPagedView";
 
@@ -89,6 +91,8 @@
 
     private Folder mFolder;
 
+    private Path mClipPath;
+
     // If the views are attached to the folder or not. A folder should be bound when its
     // animating or is open.
     private boolean mViewsBound = false;
@@ -128,8 +132,16 @@
 
     @Override
     protected void dispatchDraw(Canvas canvas) {
-        mFocusIndicatorHelper.draw(canvas);
-        super.dispatchDraw(canvas);
+        if (mClipPath != null) {
+            int count = canvas.save();
+            canvas.clipPath(mClipPath);
+            mFocusIndicatorHelper.draw(canvas);
+            super.dispatchDraw(canvas);
+            canvas.restoreToCount(count);
+        } else {
+            mFocusIndicatorHelper.draw(canvas);
+            super.dispatchDraw(canvas);
+        }
     }
 
     /**
@@ -628,4 +640,10 @@
     public int itemsPerPage() {
         return mOrganizer.getMaxItemsPerPage();
     }
+
+    @Override
+    public void setClipPath(Path clipPath) {
+        mClipPath = clipPath;
+        invalidate();
+    }
 }
diff --git a/src/com/android/launcher3/folder/PreviewBackground.java b/src/com/android/launcher3/folder/PreviewBackground.java
index 4eab63e..204decb 100644
--- a/src/com/android/launcher3/folder/PreviewBackground.java
+++ b/src/com/android/launcher3/folder/PreviewBackground.java
@@ -51,6 +51,7 @@
 public class PreviewBackground extends CellLayout.DelegatedCellDrawing {
 
     private static final boolean DRAW_SHADOW = false;
+    private static final boolean DRAW_STROKE = false;
 
     private static final int CONSUMPTION_ANIMATION_DURATION = 100;
 
@@ -303,6 +304,10 @@
     }
 
     public void animateBackgroundStroke() {
+        if (!DRAW_STROKE) {
+            return;
+        }
+
         if (mStrokeAlphaAnimator != null) {
             mStrokeAlphaAnimator.cancel();
         }
@@ -319,6 +324,9 @@
     }
 
     public void drawBackgroundStroke(Canvas canvas) {
+        if (!DRAW_STROKE) {
+            return;
+        }
         mPaint.setColor(setColorAlphaBound(mStrokeColor, mStrokeAlpha));
         mPaint.setStyle(Paint.Style.STROKE);
         mPaint.setStrokeWidth(mStrokeWidth);
@@ -363,7 +371,7 @@
         }
 
         mDrawingDelegate = null;
-        isClipping = true;
+        isClipping = false;
         invalidate();
     }
 
diff --git a/src/com/android/launcher3/graphics/IconShape.java b/src/com/android/launcher3/graphics/IconShape.java
index 2da679c..f82b07e 100644
--- a/src/com/android/launcher3/graphics/IconShape.java
+++ b/src/com/android/launcher3/graphics/IconShape.java
@@ -156,19 +156,43 @@
         }
     }
 
-    public static final class Circle extends SimpleRectShape {
+    public static final class Circle extends PathShape {
 
-        @Override
-        public void drawShape(Canvas canvas, float offsetX, float offsetY, float radius, Paint p) {
-            canvas.drawCircle(radius + offsetX, radius + offsetY, radius, p);
+        private final float[] mTempRadii = new float[8];
+
+        protected AnimatorUpdateListener newUpdateListener(Rect startRect, Rect endRect,
+                float endRadius, Path outPath) {
+            float r1 = getStartRadius(startRect);
+
+            float[] startValues = new float[] {
+                    startRect.left, startRect.top, startRect.right, startRect.bottom, r1, r1};
+            float[] endValues = new float[] {
+                    endRect.left, endRect.top, endRect.right, endRect.bottom, endRadius, endRadius};
+
+            FloatArrayEvaluator evaluator = new FloatArrayEvaluator(new float[6]);
+
+            return (anim) -> {
+                float progress = (Float) anim.getAnimatedValue();
+                float[] values = evaluator.evaluate(progress, startValues, endValues);
+                outPath.addRoundRect(
+                        values[0], values[1], values[2], values[3],
+                        getRadiiArray(values[4], values[5]), Path.Direction.CW);
+            };
         }
 
+        private float[] getRadiiArray(float r1, float r2) {
+            mTempRadii[0] = mTempRadii [1] = mTempRadii[2] = mTempRadii[3] =
+                    mTempRadii[6] = mTempRadii[7] = r1;
+            mTempRadii[4] = mTempRadii[5] = r2;
+            return mTempRadii;
+        }
+
+
         @Override
         public void addToPath(Path path, float offsetX, float offsetY, float radius) {
             path.addCircle(radius + offsetX, radius + offsetY, radius, Path.Direction.CW);
         }
 
-        @Override
         protected float getStartRadius(Rect startRect) {
             return startRect.width() / 2f;
         }
diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
index 8685aae..50ab422 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
@@ -41,6 +41,7 @@
 import android.widget.Advanceable;
 import android.widget.RemoteViews;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 
@@ -262,6 +263,10 @@
 
         mIsAttachedToWindow = true;
         checkIfAutoAdvance();
+
+        if (mLastLocationRegistered != null) {
+            mColorExtractor.addLocation(List.of(mLastLocationRegistered));
+        }
     }
 
     @Override
@@ -366,7 +371,7 @@
         if (mTempRectF.isEmpty()) {
             return;
         }
-        if (!mTempRectF.equals(mLastLocationRegistered)) {
+        if (!isSameLocation(mTempRectF, mLastLocationRegistered, /* epsilon= */ 1e-6f)) {
             if (mLastLocationRegistered != null) {
                 mColorExtractor.removeLocations();
             }
@@ -375,6 +380,20 @@
         }
     }
 
+    // Compare two location rectangles. Locations are always in the [0;1] range.
+    private static boolean isSameLocation(@NonNull RectF rect1, @Nullable RectF rect2,
+            float epsilon) {
+        if (rect2 == null) return false;
+        return isSameCoordinate(rect1.left, rect2.left, epsilon)
+                && isSameCoordinate(rect1.right, rect2.right, epsilon)
+                && isSameCoordinate(rect1.top, rect2.top, epsilon)
+                && isSameCoordinate(rect1.bottom, rect2.bottom, epsilon);
+    }
+
+    private static boolean isSameCoordinate(float c1, float c2, float epsilon) {
+        return Math.abs(c1 - c2) < epsilon;
+    }
+
     @Override
     public void onColorsChanged(RectF rectF, SparseIntArray colors) {
         // setColorResources will reapply the view, which must happen in the UI thread.
@@ -391,14 +410,6 @@
     protected void onWindowVisibilityChanged(int visibility) {
         super.onWindowVisibilityChanged(visibility);
         maybeRegisterAutoAdvance();
-
-        if (visibility == View.VISIBLE) {
-            if (mLastLocationRegistered != null) {
-                mColorExtractor.addLocation(List.of(mLastLocationRegistered));
-            }
-        } else {
-            mColorExtractor.removeLocations();
-        }
     }
 
     private void checkIfAutoAdvance() {
@@ -481,6 +492,10 @@
             return;
         }
         LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) getTag();
+        if (info == null) {
+            // This occurs when LauncherAppWidgetHostView is used to render a preview layout.
+            return;
+        }
         // Remove and rebind the current widget (which was inflated in the wrong
         // orientation), but don't delete it from the database
         mLauncher.removeItem(this, info, false  /* deleteFromDb */);