Dianne Hackborn | de75cb4 | 2011-03-02 17:11:21 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.wm; |
| 18 | |
| 19 | import android.graphics.PixelFormat; |
| 20 | import android.util.Slog; |
| 21 | import android.view.Surface; |
| 22 | import android.view.SurfaceSession; |
| 23 | |
| 24 | import java.io.PrintWriter; |
| 25 | |
| 26 | class DimSurface { |
| 27 | Surface mDimSurface; |
| 28 | boolean mDimShown = false; |
| 29 | int mDimColor = 0; |
| 30 | int mLayer = -1; |
| 31 | int mLastDimWidth, mLastDimHeight; |
| 32 | |
| 33 | DimSurface(SurfaceSession session) { |
| 34 | if (mDimSurface == null) { |
| 35 | if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " |
| 36 | + mDimSurface + ": CREATE"); |
| 37 | try { |
| 38 | mDimSurface = new Surface(session, 0, |
| 39 | "DimSurface", |
| 40 | -1, 16, 16, PixelFormat.OPAQUE, |
| 41 | Surface.FX_SURFACE_DIM); |
| 42 | mDimSurface.setAlpha(0.0f); |
| 43 | } catch (Exception e) { |
| 44 | Slog.e(WindowManagerService.TAG, "Exception creating Dim surface", e); |
| 45 | } |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Show the dim surface. |
| 51 | */ |
| 52 | void show(int dw, int dh, int layer, int color) { |
| 53 | if (!mDimShown) { |
| 54 | if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " + mDimSurface + ": SHOW pos=(0,0) (" + |
| 55 | dw + "x" + dh + ")"); |
| 56 | mDimShown = true; |
| 57 | try { |
| 58 | mLastDimWidth = dw; |
| 59 | mLastDimHeight = dh; |
| 60 | mDimSurface.setPosition(0, 0); |
| 61 | mDimSurface.setSize(dw, dh); |
| 62 | mDimSurface.show(); |
| 63 | } catch (RuntimeException e) { |
| 64 | Slog.w(WindowManagerService.TAG, "Failure showing dim surface", e); |
| 65 | } |
| 66 | } else if (mLastDimWidth != dw || mLastDimHeight != dh || mDimColor != color |
| 67 | || mLayer != layer) { |
| 68 | mLastDimWidth = dw; |
| 69 | mLastDimHeight = dh; |
| 70 | mLayer = layer; |
| 71 | mDimColor = color; |
| 72 | mDimSurface.setSize(dw, dh); |
| 73 | mDimSurface.setLayer(layer); |
| 74 | mDimSurface.setAlpha(((color>>24)&0xff)/255.0f); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | void hide() { |
| 79 | if (mDimShown) { |
| 80 | mDimShown = false; |
| 81 | try { |
| 82 | mDimSurface.hide(); |
| 83 | } catch (RuntimeException e) { |
| 84 | Slog.w(WindowManagerService.TAG, "Illegal argument exception hiding dim surface"); |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | public void printTo(String prefix, PrintWriter pw) { |
| 90 | pw.print(prefix); pw.print("mDimSurface="); pw.println(mDimSurface); |
| 91 | pw.print(prefix); pw.print("mDimShown="); pw.print(mDimShown); |
Dianne Hackborn | 9d13264 | 2011-04-21 17:26:39 -0700 | [diff] [blame] | 92 | pw.print(" mLayer="); pw.print(mLayer); |
Dianne Hackborn | de75cb4 | 2011-03-02 17:11:21 -0800 | [diff] [blame] | 93 | pw.print(" mDimColor=0x"); pw.println(Integer.toHexString(mDimColor)); |
| 94 | pw.print(prefix); pw.print("mLastDimWidth="); pw.print(mLastDimWidth); |
| 95 | pw.print(" mLastDimWidth="); pw.println(mLastDimWidth); |
| 96 | } |
| 97 | } |