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 java.io.PrintWriter; 20 21 import android.graphics.Matrix; 22 import android.graphics.PixelFormat; 23 import android.graphics.Rect; 24 import android.util.Slog; 25 import android.view.Surface; 26 import android.view.SurfaceControl; 27 import android.view.SurfaceSession; 28 29 /** 30 * Four black surfaces put together to make a black frame. 31 */ 32 public class BlackFrame { 33 class BlackSurface { 34 final int left; 35 final int top; 36 final int layer; 37 final SurfaceControl surface; 38 39 BlackSurface(SurfaceSession session, int layer, int l, int t, int r, int b, int layerStack) 40 throws SurfaceControl.OutOfResourcesException { 41 left = l; 42 top = t; 43 this.layer = layer; 44 int w = r-l; 45 int h = b-t; 46 47 if (WindowManagerService.DEBUG_SURFACE_TRACE) { 48 surface = new WindowStateAnimator.SurfaceTrace(session, "BlackSurface(" 49 + l + ", " + t + ")", 50 w, h, PixelFormat.OPAQUE, SurfaceControl.FX_SURFACE_DIM | SurfaceControl.HIDDEN); 51 } else { 52 surface = new SurfaceControl(session, "BlackSurface", 53 w, h, PixelFormat.OPAQUE, SurfaceControl.FX_SURFACE_DIM | SurfaceControl.HIDDEN); 54 } 55 56 surface.setAlpha(1); 57 surface.setLayerStack(layerStack); 58 surface.setLayer(layer); 59 surface.show(); 60 if (WindowManagerService.SHOW_TRANSACTIONS || 61 WindowManagerService.SHOW_SURFACE_ALLOC) Slog.i(WindowManagerService.TAG, 62 " BLACK " + surface + ": CREATE layer=" + layer); 63 } 64 65 void setMatrix(Matrix matrix) { 66 mTmpMatrix.setTranslate(left, top); 67 mTmpMatrix.postConcat(matrix); 68 mTmpMatrix.getValues(mTmpFloats); 69 surface.setPosition(mTmpFloats[Matrix.MTRANS_X], 70 mTmpFloats[Matrix.MTRANS_Y]); 71 surface.setMatrix( 72 mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y], 73 mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]); 74 if (false) { 75 Slog.i(WindowManagerService.TAG, "Black Surface @ (" + left + "," + top + "): (" 76 + mTmpFloats[Matrix.MTRANS_X] + "," 77 + mTmpFloats[Matrix.MTRANS_Y] + ") matrix=[" 78 + mTmpFloats[Matrix.MSCALE_X] + "," 79 + mTmpFloats[Matrix.MSCALE_Y] + "][" 80 + mTmpFloats[Matrix.MSKEW_X] + "," 81 + mTmpFloats[Matrix.MSKEW_Y] + "]"); 82 } 83 } 84 85 void clearMatrix() { 86 surface.setMatrix(1, 0, 0, 1); 87 } 88 } 89 90 final Rect mOuterRect; 91 final Rect mInnerRect; 92 final Matrix mTmpMatrix = new Matrix(); 93 final float[] mTmpFloats = new float[9]; 94 final BlackSurface[] mBlackSurfaces = new BlackSurface[4]; 95 96 public void printTo(String prefix, PrintWriter pw) { 97 pw.print(prefix); pw.print("Outer: "); mOuterRect.printShortString(pw); 98 pw.print(" / Inner: "); mInnerRect.printShortString(pw); 99 pw.println(); 100 for (int i=0; i<mBlackSurfaces.length; i++) { 101 BlackSurface bs = mBlackSurfaces[i]; 102 pw.print(prefix); pw.print("#"); pw.print(i); 103 pw.print(": "); pw.print(bs.surface); 104 pw.print(" left="); pw.print(bs.left); 105 pw.print(" top="); pw.println(bs.top); 106 } 107 } 108 109 public BlackFrame(SurfaceSession session, Rect outer, Rect inner, 110 int layer, final int layerStack) throws SurfaceControl.OutOfResourcesException { 111 boolean success = false; 112 113 mOuterRect = new Rect(outer); 114 mInnerRect = new Rect(inner); 115 try { 116 if (outer.top < inner.top) { 117 mBlackSurfaces[0] = new BlackSurface(session, layer, 118 outer.left, outer.top, inner.right, inner.top, layerStack); 119 } 120 if (outer.left < inner.left) { 121 mBlackSurfaces[1] = new BlackSurface(session, layer, 122 outer.left, inner.top, inner.left, outer.bottom, layerStack); 123 } 124 if (outer.bottom > inner.bottom) { 125 mBlackSurfaces[2] = new BlackSurface(session, layer, 126 inner.left, inner.bottom, outer.right, outer.bottom, layerStack); 127 } 128 if (outer.right > inner.right) { 129 mBlackSurfaces[3] = new BlackSurface(session, layer, 130 inner.right, outer.top, outer.right, inner.bottom, layerStack); 131 } 132 success = true; 133 } finally { 134 if (!success) { 135 kill(); 136 } 137 } 138 } 139 140 public void kill() { 141 if (mBlackSurfaces != null) { 142 for (int i=0; i<mBlackSurfaces.length; i++) { 143 if (mBlackSurfaces[i] != null) { 144 if (WindowManagerService.SHOW_TRANSACTIONS || 145 WindowManagerService.SHOW_SURFACE_ALLOC) Slog.i( 146 WindowManagerService.TAG, 147 " BLACK " + mBlackSurfaces[i].surface + ": DESTROY"); 148 mBlackSurfaces[i].surface.destroy(); 149 mBlackSurfaces[i] = null; 150 } 151 } 152 } 153 } 154 155 public void hide() { 156 if (mBlackSurfaces != null) { 157 for (int i=0; i<mBlackSurfaces.length; i++) { 158 if (mBlackSurfaces[i] != null) { 159 mBlackSurfaces[i].surface.hide(); 160 } 161 } 162 } 163 } 164 165 public void setMatrix(Matrix matrix) { 166 for (int i=0; i<mBlackSurfaces.length; i++) { 167 if (mBlackSurfaces[i] != null) { 168 mBlackSurfaces[i].setMatrix(matrix); 169 } 170 } 171 } 172 173 public void clearMatrix() { 174 for (int i=0; i<mBlackSurfaces.length; i++) { 175 if (mBlackSurfaces[i] != null) { 176 mBlackSurfaces[i].clearMatrix(); 177 } 178 } 179 } 180 } 181
