| /* |
| * Copyright (C) 2012 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.server.wm; |
| |
| import android.content.Context; |
| import android.graphics.Rect; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| import android.view.DisplayInfo; |
| import android.view.IDockedStackListener; |
| import android.view.SurfaceControl; |
| |
| import com.android.server.wm.DimLayer.DimLayerUser; |
| |
| import static android.app.ActivityManager.StackId.DOCKED_STACK_ID; |
| import static android.app.ActivityManager.StackId.INVALID_STACK_ID; |
| import static android.view.WindowManager.DOCKED_BOTTOM; |
| import static android.view.WindowManager.DOCKED_LEFT; |
| import static android.view.WindowManager.DOCKED_RIGHT; |
| import static android.view.WindowManager.DOCKED_TOP; |
| import static com.android.server.wm.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; |
| import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; |
| |
| /** |
| * Keeps information about the docked stack divider. |
| */ |
| public class DockedStackDividerController implements DimLayerUser { |
| |
| private static final String TAG = TAG_WITH_CLASS_NAME ? "DockedStackDividerController" : TAG_WM; |
| |
| private final DisplayContent mDisplayContent; |
| private final int mDividerWindowWidth; |
| private final int mDividerInsets; |
| private boolean mResizing; |
| private WindowState mWindow; |
| private final Rect mTmpRect = new Rect(); |
| private final Rect mLastRect = new Rect(); |
| private boolean mLastVisibility = false; |
| private final RemoteCallbackList<IDockedStackListener> mDockedStackListeners |
| = new RemoteCallbackList<>(); |
| private final DimLayer mDimLayer; |
| |
| DockedStackDividerController(Context context, DisplayContent displayContent) { |
| mDisplayContent = displayContent; |
| mDividerWindowWidth = context.getResources().getDimensionPixelSize( |
| com.android.internal.R.dimen.docked_stack_divider_thickness); |
| mDividerInsets = context.getResources().getDimensionPixelSize( |
| com.android.internal.R.dimen.docked_stack_divider_insets); |
| mDimLayer = new DimLayer(displayContent.mService, this, displayContent.getDisplayId()); |
| } |
| |
| boolean isResizing() { |
| return mResizing; |
| } |
| |
| int getContentWidth() { |
| return mDividerWindowWidth - 2 * mDividerInsets; |
| } |
| |
| void setResizing(boolean resizing) { |
| mResizing = resizing; |
| } |
| |
| void setWindow(WindowState window) { |
| mWindow = window; |
| reevaluateVisibility(false); |
| } |
| |
| void reevaluateVisibility(boolean force) { |
| if (mWindow == null) { |
| return; |
| } |
| TaskStack stack = mDisplayContent.mService.mStackIdToStack.get(DOCKED_STACK_ID); |
| final boolean visible = stack != null && stack.isVisibleLocked(); |
| if (mLastVisibility == visible && !force) { |
| return; |
| } |
| mLastVisibility = visible; |
| notifyDockedDividerVisibilityChanged(visible); |
| if (!visible) { |
| setResizeDimLayer(false, INVALID_STACK_ID, 0f); |
| } |
| } |
| |
| boolean wasVisible() { |
| return mLastVisibility; |
| } |
| |
| void positionDockedStackedDivider(Rect frame) { |
| TaskStack stack = mDisplayContent.getDockedStackLocked(); |
| if (stack == null) { |
| // Unfortunately we might end up with still having a divider, even though the underlying |
| // stack was already removed. This is because we are on AM thread and the removal of the |
| // divider was deferred to WM thread and hasn't happened yet. In that case let's just |
| // keep putting it in the same place it was before the stack was removed to have |
| // continuity and prevent it from jumping to the center. It will get hidden soon. |
| frame.set(mLastRect); |
| return; |
| } else { |
| stack.getDimBounds(mTmpRect); |
| } |
| int side = stack.getDockSide(); |
| switch (side) { |
| case DOCKED_LEFT: |
| frame.set(mTmpRect.right - mDividerInsets, frame.top, |
| mTmpRect.right + frame.width() - mDividerInsets, frame.bottom); |
| break; |
| case DOCKED_TOP: |
| frame.set(frame.left, mTmpRect.bottom - mDividerInsets, |
| mTmpRect.right, mTmpRect.bottom + frame.height() - mDividerInsets); |
| break; |
| case DOCKED_RIGHT: |
| frame.set(mTmpRect.left - frame.width() + mDividerInsets, frame.top, |
| mTmpRect.left + mDividerInsets, frame.bottom); |
| break; |
| case DOCKED_BOTTOM: |
| frame.set(frame.left, mTmpRect.top - frame.height() + mDividerInsets, |
| frame.right, mTmpRect.top + mDividerInsets); |
| break; |
| } |
| mLastRect.set(frame); |
| } |
| |
| void notifyDockedDividerVisibilityChanged(boolean visible) { |
| final int size = mDockedStackListeners.beginBroadcast(); |
| for (int i = 0; i < size; ++i) { |
| final IDockedStackListener listener = mDockedStackListeners.getBroadcastItem(i); |
| try { |
| listener.onDividerVisibilityChanged(visible); |
| } catch (RemoteException e) { |
| Slog.e(TAG_WM, "Error delivering divider visibility changed event.", e); |
| } |
| } |
| mDockedStackListeners.finishBroadcast(); |
| } |
| |
| void notifyDockedStackExistsChanged(boolean exists) { |
| final int size = mDockedStackListeners.beginBroadcast(); |
| for (int i = 0; i < size; ++i) { |
| final IDockedStackListener listener = mDockedStackListeners.getBroadcastItem(i); |
| try { |
| listener.onDockedStackExistsChanged(exists); |
| } catch (RemoteException e) { |
| Slog.e(TAG_WM, "Error delivering docked stack exists changed event.", e); |
| } |
| } |
| mDockedStackListeners.finishBroadcast(); |
| } |
| |
| void registerDockedStackListener(IDockedStackListener listener) { |
| mDockedStackListeners.register(listener); |
| notifyDockedDividerVisibilityChanged(wasVisible()); |
| notifyDockedStackExistsChanged( |
| mDisplayContent.mService.mStackIdToStack.get(DOCKED_STACK_ID) != null); |
| } |
| |
| void setResizeDimLayer(boolean visible, int targetStackId, float alpha) { |
| SurfaceControl.openTransaction(); |
| TaskStack stack = mDisplayContent.mService.mStackIdToStack.get(targetStackId); |
| boolean visibleAndValid = visible && stack != null; |
| if (visibleAndValid) { |
| stack.getDimBounds(mTmpRect); |
| if (mTmpRect.height() > 0 && mTmpRect.width() > 0) { |
| mDimLayer.setBounds(mTmpRect); |
| mDimLayer.show(mDisplayContent.mService.mLayersController.getResizeDimLayer(), |
| alpha, 0 /* duration */); |
| } else { |
| visibleAndValid = false; |
| } |
| } |
| if (!visibleAndValid) { |
| mDimLayer.hide(); |
| } |
| SurfaceControl.closeTransaction(); |
| } |
| |
| @Override |
| public boolean isFullscreen() { |
| return false; |
| } |
| |
| @Override |
| public DisplayInfo getDisplayInfo() { |
| return mDisplayContent.getDisplayInfo(); |
| } |
| |
| @Override |
| public void getDimBounds(Rect outBounds) { |
| // This dim layer user doesn't need this. |
| } |
| |
| @Override |
| public String toShortString() { |
| return TAG; |
| } |
| } |