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.OutOfResourcesException; 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 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 setAlpha(float alpha) { 66 surface.setAlpha(alpha); 67 } 68 69 void setMatrix(Matrix matrix) { 70 mTmpMatrix.setTranslate(left, top); 71 mTmpMatrix.postConcat(matrix); 72 mTmpMatrix.getValues(mTmpFloats); 73 surface.setPosition(mTmpFloats[Matrix.MTRANS_X], 74 mTmpFloats[Matrix.MTRANS_Y]); 75 surface.setMatrix( 76 mTmpFloats[Matrix.MSCALE_X], mTmpFloats[Matrix.MSKEW_Y], 77 mTmpFloats[Matrix.MSKEW_X], mTmpFloats[Matrix.MSCALE_Y]); 78 if (false) { 79 Slog.i(WindowManagerService.TAG, "Black Surface @ (" + left + "," + top + "): (" 80 + mTmpFloats[Matrix.MTRANS_X] + "," 81 + mTmpFloats[Matrix.MTRANS_Y] + ") matrix=[" 82 + mTmpFloats[Matrix.MSCALE_X] + "," 83 + mTmpFloats[Matrix.MSCALE_Y] + "][" 84 + mTmpFloats[Matrix.MSKEW_X] + "," 85 + mTmpFloats[Matrix.MSKEW_Y] + "]"); 86 } 87 } 88 89 void clearMatrix() { 90 surface.setMatrix(1, 0, 0, 1); 91 } 92 } 93 94 final Rect mOuterRect; 95 final Rect mInnerRect; 96 final Matrix mTmpMatrix = new Matrix(); 97 final float[] mTmpFloats = new float[9]; 98 final BlackSurface[] mBlackSurfaces = new BlackSurface[4]; 99 100 final boolean mForceDefaultOrientation; 101 102 public void printTo(String prefix, PrintWriter pw) { 103 pw.print(prefix); pw.print("Outer: "); mOuterRect.printShortString(pw); 104 pw.print(" / Inner: "); mInnerRect.printShortString(pw); 105 pw.println(); 106 for (int i=0; i<mBlackSurfaces.length; i++) { 107 BlackSurface bs = mBlackSurfaces[i]; 108 pw.print(prefix); pw.print("#"); pw.print(i); 109 pw.print(": "); pw.print(bs.surface); 110 pw.print(" left="); pw.print(bs.left); 111 pw.print(" top="); pw.println(bs.top); 112 } 113 } 114 115 public BlackFrame(SurfaceSession session, Rect outer, Rect inner, int layer, int layerStack, 116 boolean forceDefaultOrientation) throws OutOfResourcesException { 117 boolean success = false; 118 119 mForceDefaultOrientation = forceDefaultOrientation; 120 121 mOuterRect = new Rect(outer); 122 mInnerRect = new Rect(inner); 123 try { 124 if (outer.top < inner.top) { 125 mBlackSurfaces[0] = new BlackSurface(session, layer, 126 outer.left, outer.top, inner.right, inner.top, layerStack); 127 } 128 if (outer.left < inner.left) { 129 mBlackSurfaces[1] = new BlackSurface(session, layer, 130 outer.left, inner.top, inner.left, outer.bottom, layerStack); 131 } 132 if (outer.bottom > inner.bottom) { 133 mBlackSurfaces[2] = new BlackSurface(session, layer, 134 inner.left, inner.bottom, outer.right, outer.bottom, layerStack); 135 } 136 if (outer.right > inner.right) { 137 mBlackSurfaces[3] = new BlackSurface(session, layer, 138 inner.right, outer.top, outer.right, inner.bottom, layerStack); 139 } 140 success = true; 141 } finally { 142 if (!success) { 143 kill(); 144 } 145 } 146 } 147 148 public void kill() { 149 if (mBlackSurfaces != null) { 150 for (int i=0; i<mBlackSurfaces.length; i++) { 151 if (mBlackSurfaces[i] != null) { 152 if (WindowManagerService.SHOW_TRANSACTIONS || 153 WindowManagerService.SHOW_SURFACE_ALLOC) Slog.i( 154 WindowManagerService.TAG, 155 " BLACK " + mBlackSurfaces[i].surface + ": DESTROY"); 156 mBlackSurfaces[i].surface.destroy(); 157 mBlackSurfaces[i] = null; 158 } 159 } 160 } 161 } 162 163 public void hide() { 164 if (mBlackSurfaces != null) { 165 for (int i=0; i<mBlackSurfaces.length; i++) { 166 if (mBlackSurfaces[i] != null) { 167 mBlackSurfaces[i].surface.hide(); 168 } 169 } 170 } 171 } 172 173 public void setAlpha(float alpha) { 174 for (int i=0; i<mBlackSurfaces.length; i++) { 175 if (mBlackSurfaces[i] != null) { 176 mBlackSurfaces[i].setAlpha(alpha); 177 } 178 } 179 } 180 181 public void setMatrix(Matrix matrix) { 182 for (int i=0; i<mBlackSurfaces.length; i++) { 183 if (mBlackSurfaces[i] != null) { 184 mBlackSurfaces[i].setMatrix(matrix); 185 } 186 } 187 } 188 189 public void clearMatrix() { 190 for (int i=0; i<mBlackSurfaces.length; i++) { 191 if (mBlackSurfaces[i] != null) { 192 mBlackSurfaces[i].clearMatrix(); 193 } 194 } 195 } 196 } 197
