| /* |
| * Copyright (C) 2011 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.graphics.PixelFormat; |
| import android.util.Slog; |
| import android.view.Surface; |
| import android.view.SurfaceSession; |
| |
| import java.io.PrintWriter; |
| |
| class DimSurface { |
| Surface mDimSurface; |
| boolean mDimShown = false; |
| int mDimColor = 0; |
| int mLayer = -1; |
| int mLastDimWidth, mLastDimHeight; |
| |
| DimSurface(SurfaceSession session) { |
| if (mDimSurface == null) { |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " |
| + mDimSurface + ": CREATE"); |
| try { |
| mDimSurface = new Surface(session, 0, |
| "DimSurface", |
| -1, 16, 16, PixelFormat.OPAQUE, |
| Surface.FX_SURFACE_DIM); |
| mDimSurface.setAlpha(0.0f); |
| } catch (Exception e) { |
| Slog.e(WindowManagerService.TAG, "Exception creating Dim surface", e); |
| } |
| } |
| } |
| |
| /** |
| * Show the dim surface. |
| */ |
| void show(int dw, int dh, int layer, int color) { |
| if (!mDimShown) { |
| if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " + mDimSurface + ": SHOW pos=(0,0) (" + |
| dw + "x" + dh + ")"); |
| mDimShown = true; |
| try { |
| mLastDimWidth = dw; |
| mLastDimHeight = dh; |
| mDimSurface.setPosition(0, 0); |
| mDimSurface.setSize(dw, dh); |
| mDimSurface.show(); |
| } catch (RuntimeException e) { |
| Slog.w(WindowManagerService.TAG, "Failure showing dim surface", e); |
| } |
| } else if (mLastDimWidth != dw || mLastDimHeight != dh || mDimColor != color |
| || mLayer != layer) { |
| mLastDimWidth = dw; |
| mLastDimHeight = dh; |
| mLayer = layer; |
| mDimColor = color; |
| mDimSurface.setSize(dw, dh); |
| mDimSurface.setLayer(layer); |
| mDimSurface.setAlpha(((color>>24)&0xff)/255.0f); |
| } |
| } |
| |
| void hide() { |
| if (mDimShown) { |
| mDimShown = false; |
| try { |
| mDimSurface.hide(); |
| } catch (RuntimeException e) { |
| Slog.w(WindowManagerService.TAG, "Illegal argument exception hiding dim surface"); |
| } |
| } |
| } |
| |
| public void printTo(String prefix, PrintWriter pw) { |
| pw.print(prefix); pw.print("mDimSurface="); pw.println(mDimSurface); |
| pw.print(prefix); pw.print("mDimShown="); pw.print(mDimShown); |
| pw.print(" mLayer="); pw.println(mLayer); |
| pw.print(" mDimColor=0x"); pw.println(Integer.toHexString(mDimColor)); |
| pw.print(prefix); pw.print("mLastDimWidth="); pw.print(mLastDimWidth); |
| pw.print(" mLastDimWidth="); pw.println(mLastDimWidth); |
| } |
| } |