Add empty Taskbar views and initial TaskbarController

Guarded by a FeatureFlag. Bug: 171917176 Change-Id: I7145c7ae68282bf53552502798fe758c8c0e285d
2026-03-01 08:16:49 +00:00 · 2020-12-22 12:40:09 -06:00
parent 867b62a2d0
commit f26e90aa35
9 changed files with 279 additions and 1 deletions
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarController.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2021 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.taskbar;
+
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
+import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
+
+import static com.android.systemui.shared.system.WindowManagerWrapper.ITYPE_BOTTOM_TAPPABLE_ELEMENT;
+import static com.android.systemui.shared.system.WindowManagerWrapper.ITYPE_EXTRA_NAVIGATION_BAR;
+
+import android.graphics.PixelFormat;
+import android.graphics.Point;
+import android.view.Gravity;
+import android.view.WindowManager;
+
+import com.android.launcher3.BaseQuickstepLauncher;
+import com.android.launcher3.R;
+import com.android.systemui.shared.system.WindowManagerWrapper;
+
+/**
+ * Interfaces with Launcher/WindowManager/SystemUI to determine what to show in TaskbarView.
+ */
+public class TaskbarController {
+
+    private static final String WINDOW_TITLE = "Taskbar";
+
+    private final TaskbarContainerView mTaskbarContainerView;
+    private final TaskbarView mTaskbarView;
+    private final BaseQuickstepLauncher mLauncher;
+    private final WindowManager mWindowManager;
+    // Layout width and height of the Taskbar in the default state.
+    private final Point mTaskbarSize;
+
+    private WindowManager.LayoutParams mWindowLayoutParams;
+
+    public TaskbarController(BaseQuickstepLauncher launcher,
+            TaskbarContainerView taskbarContainerView) {
+        mLauncher = launcher;
+        mTaskbarContainerView = taskbarContainerView;
+        mTaskbarView = mTaskbarContainerView.findViewById(R.id.taskbar_view);
+        mWindowManager = mLauncher.getWindowManager();
+        mTaskbarSize = new Point(MATCH_PARENT,
+                mLauncher.getResources().getDimensionPixelSize(R.dimen.taskbar_size));
+    }
+
+    /**
+     * Initializes the Taskbar, including adding it to the screen.
+     */
+    public void init() {
+        addToWindowManager();
+    }
+
+    /**
+     * Removes the Taskbar from the screen, and removes any obsolete listeners etc.
+     */
+    public void cleanup() {
+        removeFromWindowManager();
+    }
+
+    private void removeFromWindowManager() {
+        if (mTaskbarContainerView.isAttachedToWindow()) {
+            mWindowManager.removeViewImmediate(mTaskbarContainerView);
+        }
+    }
+
+    private void addToWindowManager() {
+        removeFromWindowManager();
+
+        final int gravity = Gravity.BOTTOM;
+
+        mWindowLayoutParams = new WindowManager.LayoutParams(
+                mTaskbarSize.x,
+                mTaskbarSize.y,
+                TYPE_APPLICATION_OVERLAY,
+                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
+                PixelFormat.TRANSLUCENT);
+        mWindowLayoutParams.setTitle(WINDOW_TITLE);
+        mWindowLayoutParams.packageName = mLauncher.getPackageName();
+        mWindowLayoutParams.gravity = gravity;
+        mWindowLayoutParams.setFitInsetsTypes(0);
+        mWindowLayoutParams.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING;
+        mWindowLayoutParams.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
+
+        WindowManagerWrapper wmWrapper = WindowManagerWrapper.getInstance();
+        wmWrapper.setProvidesInsetsTypes(
+                mWindowLayoutParams,
+                new int[] { ITYPE_EXTRA_NAVIGATION_BAR, ITYPE_BOTTOM_TAPPABLE_ELEMENT }
+        );
+
+        TaskbarContainerView.LayoutParams taskbarLayoutParams =
+                new TaskbarContainerView.LayoutParams(mTaskbarSize.x, mTaskbarSize.y);
+        taskbarLayoutParams.gravity = gravity;
+        mTaskbarView.setLayoutParams(taskbarLayoutParams);
+
+        mWindowManager.addView(mTaskbarContainerView, mWindowLayoutParams);
+    }
+}