Dianne Hackborn | 7916ac6 | 2011-05-16 20:45:48 -0700 | [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.Matrix; |
| 20 | import android.graphics.PixelFormat; |
| 21 | import android.graphics.Rect; |
| 22 | import android.util.Slog; |
| 23 | import android.view.Surface; |
| 24 | import android.view.SurfaceSession; |
| 25 | |
| 26 | /** |
| 27 | * Four black surfaces put together to make a black frame. |
| 28 | */ |
| 29 | public class BlackFrame { |
| 30 | class BlackSurface { |
| 31 | final int left; |
| 32 | final int top; |
| 33 | final Surface surface; |
| 34 | |
| 35 | BlackSurface(SurfaceSession session, int layer, int l, int t, int w, int h) |
| 36 | throws Surface.OutOfResourcesException { |
| 37 | left = l; |
| 38 | top = t; |
| 39 | surface = new Surface(session, 0, "BlackSurface", |
| 40 | -1, w, h, PixelFormat.OPAQUE, Surface.FX_SURFACE_DIM); |
Dianne Hackborn | 5fd2169 | 2011-06-07 14:09:47 -0700 | [diff] [blame^] | 41 | if (WindowManagerService.SHOW_TRANSACTIONS || |
| 42 | WindowManagerService.SHOW_SURFACE_ALLOC) Slog.i(WindowManagerService.TAG, |
| 43 | " BLACK " + surface + ": CREATE layer=" + layer); |
Dianne Hackborn | 7916ac6 | 2011-05-16 20:45:48 -0700 | [diff] [blame] | 44 | surface.setAlpha(1.0f); |
| 45 | surface.setLayer(layer); |
| 46 | } |
| 47 | |
| 48 | void setMatrix(Matrix matrix) { |
| 49 | mTmpMatrix.setTranslate(left, top); |
| 50 | mTmpMatrix.postConcat(matrix); |
| 51 | mTmpMatrix.getValues(mTmpFloats); |
| 52 | surface.setPosition((int)mTmpFloats[Matrix.MTRANS_X], |
| 53 | (int)mTmpFloats[Matrix.MTRANS_Y]); |
| 54 | surface.setMatrix( |
| 55 | mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y], |
| 56 | mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]); |
| 57 | if (false) { |
| 58 | Slog.i(WindowManagerService.TAG, "Black Surface @ (" + left + "," + top + "): (" |
| 59 | + mTmpFloats[Matrix.MTRANS_X] + "," |
| 60 | + mTmpFloats[Matrix.MTRANS_Y] + ") matrix=[" |
| 61 | + mTmpFloats[Matrix.MSCALE_X] + "," |
| 62 | + mTmpFloats[Matrix.MSCALE_Y] + "][" |
| 63 | + mTmpFloats[Matrix.MSKEW_X] + "," |
| 64 | + mTmpFloats[Matrix.MSKEW_Y] + "]"); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | void clearMatrix() { |
| 69 | surface.setMatrix(1, 0, 0, 1); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | final Matrix mTmpMatrix = new Matrix(); |
| 74 | final float[] mTmpFloats = new float[9]; |
| 75 | final BlackSurface[] mBlackSurfaces = new BlackSurface[4]; |
| 76 | |
| 77 | public BlackFrame(SurfaceSession session, Rect outer, Rect inner, |
| 78 | int layer) throws Surface.OutOfResourcesException { |
| 79 | boolean success = false; |
| 80 | |
| 81 | try { |
| 82 | if (outer.top < inner.top) { |
| 83 | mBlackSurfaces[0] = new BlackSurface(session, layer, |
| 84 | outer.left, outer.top, inner.right, inner.top); |
| 85 | } |
| 86 | if (outer.left < inner.left) { |
| 87 | mBlackSurfaces[1] = new BlackSurface(session, layer, |
| 88 | outer.left, inner.top, inner.left, outer.bottom); |
| 89 | } |
| 90 | if (outer.bottom > inner.bottom) { |
| 91 | mBlackSurfaces[2] = new BlackSurface(session, layer, |
| 92 | inner.left, inner.bottom, outer.right, outer.bottom); |
| 93 | } |
| 94 | if (outer.right > inner.right) { |
| 95 | mBlackSurfaces[3] = new BlackSurface(session, layer, |
| 96 | inner.right, outer.top, outer.right, inner.bottom); |
| 97 | } |
| 98 | success = true; |
| 99 | } finally { |
| 100 | if (!success) { |
| 101 | kill(); |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | public void kill() { |
| 107 | if (mBlackSurfaces != null) { |
| 108 | for (int i=0; i<mBlackSurfaces.length; i++) { |
| 109 | if (mBlackSurfaces[i] != null) { |
Dianne Hackborn | 5fd2169 | 2011-06-07 14:09:47 -0700 | [diff] [blame^] | 110 | if (WindowManagerService.SHOW_TRANSACTIONS || |
| 111 | WindowManagerService.SHOW_SURFACE_ALLOC) Slog.i( |
| 112 | WindowManagerService.TAG, |
| 113 | " BLACK " + mBlackSurfaces[i].surface + ": DESTROY"); |
Dianne Hackborn | 7916ac6 | 2011-05-16 20:45:48 -0700 | [diff] [blame] | 114 | mBlackSurfaces[i].surface.destroy(); |
| 115 | mBlackSurfaces[i] = null; |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | public void hide() { |
| 122 | if (mBlackSurfaces != null) { |
| 123 | for (int i=0; i<mBlackSurfaces.length; i++) { |
| 124 | if (mBlackSurfaces[i] != null) { |
| 125 | mBlackSurfaces[i].surface.hide(); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | public void setMatrix(Matrix matrix) { |
| 132 | for (int i=0; i<mBlackSurfaces.length; i++) { |
| 133 | if (mBlackSurfaces[i] != null) { |
| 134 | mBlackSurfaces[i].setMatrix(matrix); |
| 135 | } |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | public void clearMatrix() { |
| 140 | for (int i=0; i<mBlackSurfaces.length; i++) { |
| 141 | if (mBlackSurfaces[i] != null) { |
| 142 | mBlackSurfaces[i].clearMatrix(); |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | } |