Add lens shortcut in overview actions

lawnchair/res/drawable/ic_lens.xml

@@ -0,0 +1,7 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#000" android:pathData="M6,2H18A4,4 0 0,1 22,6V12H20V6A2,2 0 0,0 18,4H6A2,2 0 0,0 4,6V18A2,2 0 0,0 6,20H12V22H6A4,4 0 0,1 2,18V6A4,4 0 0,1 6,2M12,8A4,4 0 0,1 16,12A4,4 0 0,1 12,16A4,4 0 0,1 8,12A4,4 0 0,1 12,8M18,16A2,2 0 0,1 20,18A2,2 0 0,1 18,20A2,2 0 0,1 16,18A2,2 0 0,1 18,16Z" />
+</vector>

lawnchair/res/layout/overview_actions_container.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2020 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.
+-->
+<!-- NOTE! don't add dimensions for margins / gravity to root view in this file, they need to be
+     loaded at runtime. -->
+<app.lawnchair.overview.LawnchairOverviewActionsView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <LinearLayout
+        android:id="@+id/action_buttons"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/overview_actions_height"
+        android:layout_gravity="bottom|center_horizontal"
+        android:orientation="horizontal">
+
+        <Space
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1" />
+
+        <app.lawnchair.views.CustomButton
+            android:id="@+id/action_screenshot"
+            style="@style/OverviewActionButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:drawableStart="@drawable/ic_screenshot"
+            android:text="@string/action_screenshot"
+            android:theme="@style/ThemeControlHighlightWorkspaceColor"
+            android:visibility="gone" />
+
+        <Space
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1"
+            android:visibility="gone" />
+
+        <app.lawnchair.views.CustomButton
+            android:id="@+id/action_share"
+            style="@style/OverviewActionButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:drawableStart="@drawable/ic_share"
+            android:text="@string/action_share"
+            android:theme="@style/ThemeControlHighlightWorkspaceColor" />
+
+        <Space
+            android:id="@+id/oav_three_button_space"
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1" />
+
+        <app.lawnchair.views.CustomButton
+            android:id="@+id/action_lens"
+            style="@style/OverviewActionButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:drawableStart="@drawable/ic_lens"
+            android:text="@string/action_lens"
+            android:theme="@style/ThemeControlHighlightWorkspaceColor" />
+
+        <Space
+            android:id="@+id/lens_space"
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1"
+            android:visibility="gone" />
+
+        <app.lawnchair.views.CustomButton
+            style="@style/OverviewActionButton"
+            android:id="@+id/action_clear_all"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/recents_clear_all"
+            android:theme="@style/ThemeControlHighlightWorkspaceColor"
+            android:drawableStart="@drawable/ic_clear_all_recents"
+            android:visibility="gone"
+            />
+
+        <Space
+            android:id="@+id/clear_all_space"
+            android:layout_width="0dp"
+            android:layout_height="1dp"
+            android:layout_weight="1"
+            android:visibility="gone" />
+    </LinearLayout>
+
+</app.lawnchair.overview.LawnchairOverviewActionsView>

lawnchair/res/values/config.xml

@@ -21,6 +21,8 @@
     <string name="clock_component_name" translatable="false">com.google.android.deskclock/com.android.deskclock.DeskClock</string>
     <string name="launcher_activity_logic_class" translatable="false">app.lawnchair.LauncherActivityCachingLogic</string>
 
+    <string name="task_overlay_factory_class" translatable="false">app.lawnchair.overview.TaskOverlayFactoryImpl</string>
+
     <string-array name="filtered_components">
         <!-- Voice search -->
         <item>com.google.android.googlequicksearchbox/.VoiceSearchActivity</item>

lawnchair/res/values/strings.xml

@@ -158,4 +158,5 @@
     <string name="customize_button_text">Customize</string>
     <string name="app_title_label">Title</string>
     <string name="hide_from_drawer">Hide from Drawer</string>
+    <string name="action_lens">Lens</string>
 </resources>

lawnchair/src/app/lawnchair/overview/LawnchairOverviewActionsView.kt

@@ -0,0 +1,33 @@
+package app.lawnchair.overview
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.Button
+import android.widget.Space
+import androidx.core.view.ViewCompat
+import androidx.core.view.isVisible
+import com.android.launcher3.R
+import com.android.quickstep.views.OverviewActionsView
+
+class LawnchairOverviewActionsView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
+) : OverviewActionsView<TaskOverlayFactoryImpl.OverlayUICallbacks>(context, attrs, defStyleAttr) {
+
+    override fun onFinishInflate() {
+        super.onFinishInflate()
+
+        val lensIntent = context.packageManager.getLaunchIntentForPackage("com.google.ar.lens")
+        val lensAvailable = lensIntent != null
+
+        val lensButton = ViewCompat.requireViewById<Button>(this, R.id.action_lens)
+        lensButton.setOnClickListener {
+            mCallbacks?.onLens()
+        }
+        lensButton.isVisible = lensAvailable
+
+        val lensSpace = ViewCompat.requireViewById<Space>(this, R.id.lens_space)
+        lensSpace.isVisible = lensAvailable
+    }
+}

lawnchair/src/app/lawnchair/overview/TaskOverlayFactoryImpl.kt

@@ -0,0 +1,60 @@
+package app.lawnchair.overview
+
+import android.content.Context
+import android.graphics.Matrix
+import androidx.annotation.Keep
+import com.android.quickstep.TaskOverlayFactory
+import com.android.quickstep.views.OverviewActionsView
+import com.android.quickstep.views.TaskThumbnailView
+import com.android.systemui.shared.recents.model.Task
+import com.android.systemui.shared.recents.model.ThumbnailData
+
+@Keep
+class TaskOverlayFactoryImpl(@Suppress("UNUSED_PARAMETER") context: Context) : TaskOverlayFactory() {
+
+    override fun createOverlay(thumbnailView: TaskThumbnailView) = TaskOverlay(thumbnailView)
+
+    class TaskOverlay(
+        taskThumbnailView: TaskThumbnailView
+    ) : TaskOverlayFactory.TaskOverlay<LawnchairOverviewActionsView>(taskThumbnailView) {
+
+        override fun initOverlay(
+            task: Task,
+            thumbnail: ThumbnailData?,
+            matrix: Matrix,
+            rotated: Boolean
+        ) {
+            actionsView.updateDisabledFlags(
+                OverviewActionsView.DISABLED_NO_THUMBNAIL,
+                thumbnail == null
+            )
+
+            if (thumbnail != null) {
+                actionsView.updateDisabledFlags(OverviewActionsView.DISABLED_ROTATED, rotated)
+                val isAllowedByPolicy = mThumbnailView.isRealSnapshot
+                actionsView.setCallbacks(OverlayUICallbacksImpl(isAllowedByPolicy, task))
+            }
+        }
+
+        private inner class OverlayUICallbacksImpl(
+            isAllowedByPolicy: Boolean,
+            task: Task
+        ) : TaskOverlayFactory.TaskOverlay<LawnchairOverviewActionsView>.OverlayUICallbacksImpl(
+            isAllowedByPolicy,
+            task
+        ), OverlayUICallbacks {
+
+            override fun onLens() {
+                if (mIsAllowedByPolicy) {
+                    endLiveTileMode { mImageApi.startLensActivity() }
+                } else {
+                    showBlockedByPolicyMessage()
+                }
+            }
+        }
+    }
+
+    interface OverlayUICallbacks : TaskOverlayFactory.OverlayUICallbacks {
+        fun onLens()
+    }
+}

quickstep/src/com/android/quickstep/ImageActionsApi.java

@@ -31,6 +31,7 @@ import android.graphics.Insets;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.util.Log;
+import android.view.View;
 
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
@@ -103,6 +104,11 @@ public class ImageActionsApi {
         ImageActionUtils.startShareActivity(mContext, mBitmapSupplier, crop, null, TAG);
     }
 
+    @UiThread
+    public void startLensActivity() {
+        ImageActionUtils.startLensActivity(mContext, mBitmapSupplier, null, null, TAG);
+    }
+
     /**
      * @param screenshot       to be saved to the media store.
      * @param screenshotBounds the location of where the bitmap was laid out on the screen in

quickstep/src/com/android/quickstep/util/ImageActionUtils.java

@@ -147,6 +147,19 @@ public class ImageActionUtils {
                 bitmapSupplier.get(), crop, intent, ImageActionUtils::getShareIntentForImageUri,
                 tag, sharedElement));
     }
+    
+    @UiThread
+    public static void startLensActivity(Context context, Supplier<Bitmap> bitmapSupplier,
+            Rect crop, Intent intent, String tag) {
+        if (bitmapSupplier.get() == null) {
+            Log.e(tag, "No snapshot available, not starting share.");
+            return;
+        }
+
+        UI_HELPER_EXECUTOR.execute(() -> persistBitmapAndStartActivity(context,
+                bitmapSupplier.get(), crop, intent, ImageActionUtils::getLensIntentForImageUri,
+                tag));
+    }
 
     /**
      * Starts activity based on given intent created from image uri.
@@ -272,6 +285,15 @@ public class ImageActionUtils {
                 .setClipData(clipdata);
         return new Intent[]{Intent.createChooser(intent, null).addFlags(FLAG_ACTIVITY_NEW_TASK)};
     }
+    
+    @WorkerThread
+    private static Intent[] getLensIntentForImageUri(Uri uri, Intent intent) {
+        if (intent == null) {
+            intent = new Intent();
+        }
+        intent.setPackage("com.google.ar.lens");
+        return getShareIntentForImageUri(uri, intent);
+    }
 
     private static void clearOldCacheFiles(Context context) {
         THREAD_POOL_EXECUTOR.execute(() -> {