| /* |
| * Copyright (C) 2010 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.WindowManagerDebugConfig.TAG_WITH_CLASS_NAME; |
| import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM; |
| |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.PixelFormat; |
| import android.graphics.Rect; |
| import android.view.Surface; |
| import android.view.Surface.OutOfResourcesException; |
| import android.view.SurfaceControl; |
| |
| import java.util.function.Supplier; |
| |
| class StrictModeFlash { |
| private static final String TAG = TAG_WITH_CLASS_NAME ? "StrictModeFlash" : TAG_WM; |
| |
| private final SurfaceControl mSurfaceControl; |
| private final Surface mSurface; |
| private int mLastDW; |
| private int mLastDH; |
| private boolean mDrawNeeded; |
| private final int mThickness = 20; |
| |
| StrictModeFlash(Supplier<Surface> surfaceFactory, DisplayContent dc) { |
| mSurface = surfaceFactory.get(); |
| SurfaceControl ctrl = null; |
| try { |
| ctrl = dc.makeOverlay() |
| .setName("StrictModeFlash") |
| .setBufferSize(1, 1) |
| .setFormat(PixelFormat.TRANSLUCENT) |
| .build(); |
| ctrl.setLayer(WindowManagerService.TYPE_LAYER_MULTIPLIER * 101); // one more than Watermark? arbitrary. |
| ctrl.setPosition(0, 0); |
| ctrl.show(); |
| mSurface.copyFrom(ctrl); |
| } catch (OutOfResourcesException e) { |
| } |
| mSurfaceControl = ctrl; |
| mDrawNeeded = true; |
| } |
| |
| private void drawIfNeeded() { |
| if (!mDrawNeeded) { |
| return; |
| } |
| mDrawNeeded = false; |
| final int dw = mLastDW; |
| final int dh = mLastDH; |
| |
| Rect dirty = new Rect(0, 0, dw, dh); |
| Canvas c = null; |
| try { |
| c = mSurface.lockCanvas(dirty); |
| } catch (IllegalArgumentException e) { |
| } catch (Surface.OutOfResourcesException e) { |
| } |
| if (c == null) { |
| return; |
| } |
| |
| // Top |
| c.save(); |
| c.clipRect(new Rect(0, 0, dw, mThickness)); |
| c.drawColor(Color.RED); |
| c.restore(); |
| // Left |
| c.save(); |
| c.clipRect(new Rect(0, 0, mThickness, dh)); |
| c.drawColor(Color.RED); |
| c.restore(); |
| // Right |
| c.save(); |
| c.clipRect(new Rect(dw - mThickness, 0, dw, dh)); |
| c.drawColor(Color.RED); |
| c.restore(); |
| // Bottom |
| c.save(); |
| c.clipRect(new Rect(0, dh - mThickness, dw, dh)); |
| c.drawColor(Color.RED); |
| c.restore(); |
| |
| mSurface.unlockCanvasAndPost(c); |
| } |
| |
| // Note: caller responsible for being inside |
| // Surface.openTransaction() / closeTransaction() |
| public void setVisibility(boolean on) { |
| if (mSurfaceControl == null) { |
| return; |
| } |
| drawIfNeeded(); |
| if (on) { |
| mSurfaceControl.show(); |
| } else { |
| mSurfaceControl.hide(); |
| } |
| } |
| |
| void positionSurface(int dw, int dh) { |
| if (mLastDW == dw && mLastDH == dh) { |
| return; |
| } |
| mLastDW = dw; |
| mLastDH = dh; |
| mSurfaceControl.setBufferSize(dw, dh); |
| mDrawNeeded = true; |
| } |
| |
| } |