| /* |
| * Copyright (C) 2014 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.Canvas; |
| import android.graphics.Color; |
| import android.graphics.PixelFormat; |
| import android.graphics.Point; |
| import android.graphics.PorterDuff; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.view.Display; |
| import android.view.Surface; |
| import android.view.Surface.OutOfResourcesException; |
| import android.view.SurfaceControl; |
| import android.view.SurfaceSession; |
| |
| class EmulatorDisplayOverlay { |
| private static final String TAG = "EmulatorDisplayOverlay"; |
| |
| // Display dimensions |
| private Point mScreenSize; |
| |
| private final SurfaceControl mSurfaceControl; |
| private final Surface mSurface = new Surface(); |
| private int mLastDW; |
| private int mLastDH; |
| private boolean mDrawNeeded; |
| private Drawable mOverlay; |
| private int mRotation; |
| private boolean mVisible; |
| |
| public EmulatorDisplayOverlay(Context context, Display display, SurfaceSession session, |
| int zOrder) { |
| mScreenSize = new Point(); |
| display.getSize(mScreenSize); |
| |
| SurfaceControl ctrl = null; |
| try { |
| if (WindowManagerService.DEBUG_SURFACE_TRACE) { |
| ctrl = new WindowStateAnimator.SurfaceTrace(session, "EmulatorDisplayOverlay", |
| mScreenSize.x, mScreenSize.y, PixelFormat.TRANSLUCENT, |
| SurfaceControl.HIDDEN); |
| } else { |
| ctrl = new SurfaceControl(session, "EmulatorDisplayOverlay", mScreenSize.x, |
| mScreenSize.y, PixelFormat.TRANSLUCENT, SurfaceControl.HIDDEN); |
| } |
| ctrl.setLayerStack(display.getLayerStack()); |
| ctrl.setLayer(zOrder); |
| ctrl.setPosition(0, 0); |
| ctrl.show(); |
| mSurface.copyFrom(ctrl); |
| } catch (OutOfResourcesException e) { |
| } |
| mSurfaceControl = ctrl; |
| mDrawNeeded = true; |
| mOverlay = context.getDrawable( |
| com.android.internal.R.drawable.emulator_circular_window_overlay); |
| } |
| |
| private void drawIfNeeded() { |
| if (!mDrawNeeded || !mVisible) { |
| return; |
| } |
| mDrawNeeded = false; |
| |
| Rect dirty = new Rect(0, 0, mScreenSize.x, mScreenSize.y); |
| Canvas c = null; |
| try { |
| c = mSurface.lockCanvas(dirty); |
| } catch (IllegalArgumentException e) { |
| } catch (OutOfResourcesException e) { |
| } |
| if (c == null) { |
| return; |
| } |
| c.drawColor(Color.TRANSPARENT, PorterDuff.Mode.SRC); |
| mSurfaceControl.setPosition(0, 0); |
| // Always draw the overlay with square dimensions |
| int size = Math.max(mScreenSize.x, mScreenSize.y); |
| mOverlay.setBounds(0, 0, size, size); |
| mOverlay.draw(c); |
| mSurface.unlockCanvasAndPost(c); |
| } |
| |
| // Note: caller responsible for being inside |
| // Surface.openTransaction() / closeTransaction() |
| public void setVisibility(boolean on) { |
| if (mSurfaceControl == null) { |
| return; |
| } |
| mVisible = on; |
| drawIfNeeded(); |
| if (on) { |
| mSurfaceControl.show(); |
| } else { |
| mSurfaceControl.hide(); |
| } |
| } |
| |
| void positionSurface(int dw, int dh, int rotation) { |
| if (mLastDW == dw && mLastDH == dh && mRotation == rotation) { |
| return; |
| } |
| mLastDW = dw; |
| mLastDH = dh; |
| mDrawNeeded = true; |
| mRotation = rotation; |
| drawIfNeeded(); |
| } |
| |
| } |