| /* |
| * Copyright (C) 2013 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 static com.android.server.wm.WindowManagerService.DEBUG_SURFACE_TRACE; |
| import static com.android.server.wm.WindowManagerService.SHOW_LIGHT_TRANSACTIONS; |
| |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.PixelFormat; |
| import android.graphics.Rect; |
| import android.util.Slog; |
| import android.view.Display; |
| import android.view.Surface.OutOfResourcesException; |
| import android.view.Surface; |
| import android.view.SurfaceControl; |
| import android.view.SurfaceSession; |
| |
| import com.android.server.wm.WindowStateAnimator.SurfaceTrace; |
| |
| class FocusedStackFrame { |
| private static final String TAG = "FocusedStackFrame"; |
| private static final boolean DEBUG = false; |
| private static final int THICKNESS = 2; |
| private static final float ALPHA = 0.3f; |
| |
| private final SurfaceControl mSurfaceControl; |
| private final Surface mSurface = new Surface(); |
| private final Paint mInnerPaint = new Paint(); |
| private final Paint mOuterPaint = new Paint(); |
| private final Rect mBounds = new Rect(); |
| private final Rect mLastBounds = new Rect(); |
| private int mLayer = -1; |
| |
| public FocusedStackFrame(Display display, SurfaceSession session) { |
| SurfaceControl ctrl = null; |
| try { |
| if (DEBUG_SURFACE_TRACE) { |
| ctrl = new SurfaceTrace(session, "FocusedStackFrame", |
| 1, 1, PixelFormat.TRANSLUCENT, SurfaceControl.HIDDEN); |
| } else { |
| ctrl = new SurfaceControl(session, "FocusedStackFrame", |
| 1, 1, PixelFormat.TRANSLUCENT, SurfaceControl.HIDDEN); |
| } |
| ctrl.setLayerStack(display.getLayerStack()); |
| ctrl.setAlpha(ALPHA); |
| mSurface.copyFrom(ctrl); |
| } catch (OutOfResourcesException e) { |
| } |
| mSurfaceControl = ctrl; |
| |
| mInnerPaint.setStyle(Paint.Style.STROKE); |
| mInnerPaint.setStrokeWidth(THICKNESS); |
| mInnerPaint.setColor(Color.WHITE); |
| mOuterPaint.setStyle(Paint.Style.STROKE); |
| mOuterPaint.setStrokeWidth(THICKNESS); |
| mOuterPaint.setColor(Color.BLACK); |
| } |
| |
| private void draw() { |
| if (mLastBounds.isEmpty()) { |
| // Currently unset. Set it. |
| mLastBounds.set(mBounds); |
| } |
| |
| if (DEBUG) Slog.i(TAG, "draw: mBounds=" + mBounds + " mLastBounds=" + mLastBounds); |
| |
| Canvas c = null; |
| try { |
| c = mSurface.lockCanvas(mLastBounds); |
| } catch (IllegalArgumentException e) { |
| Slog.e(TAG, "Unable to lock canvas", e); |
| } catch (Surface.OutOfResourcesException e) { |
| Slog.e(TAG, "Unable to lock canvas", e); |
| } |
| if (c == null) { |
| if (DEBUG) Slog.w(TAG, "Canvas is null..."); |
| return; |
| } |
| |
| c.drawRect(0, 0, mBounds.width(), mBounds.height(), mOuterPaint); |
| c.drawRect(THICKNESS, THICKNESS, mBounds.width() - THICKNESS, mBounds.height() - THICKNESS, |
| mInnerPaint); |
| if (DEBUG) Slog.w(TAG, "c.width=" + c.getWidth() + " c.height=" + c.getHeight() |
| + " c.clip=" + c .getClipBounds()); |
| mSurface.unlockCanvasAndPost(c); |
| mLastBounds.set(mBounds); |
| } |
| |
| private void setupSurface(boolean visible) { |
| if (mSurfaceControl == null) { |
| return; |
| } |
| if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG, ">>> OPEN TRANSACTION setupSurface"); |
| SurfaceControl.openTransaction(); |
| try { |
| if (visible) { |
| mSurfaceControl.setPosition(mBounds.left, mBounds.top); |
| mSurfaceControl.setSize(mBounds.width(), mBounds.height()); |
| mSurfaceControl.show(); |
| } else { |
| mSurfaceControl.hide(); |
| } |
| } finally { |
| SurfaceControl.closeTransaction(); |
| if (SHOW_LIGHT_TRANSACTIONS) Slog.i(TAG, ">>> CLOSE TRANSACTION setupSurface"); |
| } |
| } |
| |
| void setVisibility(TaskStack stack) { |
| if (stack == null || stack.isFullscreen()) { |
| setupSurface(false); |
| } else { |
| stack.getBounds(mBounds); |
| setupSurface(true); |
| if (!mBounds.equals(mLastBounds)) { |
| draw(); |
| } |
| } |
| } |
| |
| // Note: caller responsible for being inside |
| // Surface.openTransaction() / closeTransaction() |
| void setLayer(int layer) { |
| if (mLayer == layer) { |
| return; |
| } |
| mLayer = layer; |
| mSurfaceControl.setLayer(mLayer); |
| } |
| } |