98 lines
3.4 KiB
Java
98 lines
3.4 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.wm;
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import android.graphics.PixelFormat;
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import android.util.Slog;
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import android.view.Surface;
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import android.view.SurfaceSession;
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import java.io.PrintWriter;
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class DimSurface {
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Surface mDimSurface;
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boolean mDimShown = false;
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int mDimColor = 0;
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int mLayer = -1;
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int mLastDimWidth, mLastDimHeight;
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DimSurface(SurfaceSession session) {
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if (mDimSurface == null) {
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if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM "
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+ mDimSurface + ": CREATE");
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try {
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mDimSurface = new Surface(session, 0,
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"DimSurface",
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-1, 16, 16, PixelFormat.OPAQUE,
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Surface.FX_SURFACE_DIM);
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mDimSurface.setAlpha(0.0f);
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} catch (Exception e) {
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Slog.e(WindowManagerService.TAG, "Exception creating Dim surface", e);
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}
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}
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}
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/**
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* Show the dim surface.
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*/
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void show(int dw, int dh, int layer, int color) {
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if (!mDimShown) {
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if (WindowManagerService.SHOW_TRANSACTIONS) Slog.i(WindowManagerService.TAG, " DIM " + mDimSurface + ": SHOW pos=(0,0) (" +
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dw + "x" + dh + ")");
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mDimShown = true;
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try {
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mLastDimWidth = dw;
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mLastDimHeight = dh;
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mDimSurface.setPosition(0, 0);
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mDimSurface.setSize(dw, dh);
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mDimSurface.show();
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} catch (RuntimeException e) {
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Slog.w(WindowManagerService.TAG, "Failure showing dim surface", e);
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}
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} else if (mLastDimWidth != dw || mLastDimHeight != dh || mDimColor != color
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|| mLayer != layer) {
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mLastDimWidth = dw;
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mLastDimHeight = dh;
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mLayer = layer;
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mDimColor = color;
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mDimSurface.setSize(dw, dh);
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mDimSurface.setLayer(layer);
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mDimSurface.setAlpha(((color>>24)&0xff)/255.0f);
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}
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}
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void hide() {
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if (mDimShown) {
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mDimShown = false;
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try {
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mDimSurface.hide();
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} catch (RuntimeException e) {
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Slog.w(WindowManagerService.TAG, "Illegal argument exception hiding dim surface");
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}
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}
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}
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public void printTo(String prefix, PrintWriter pw) {
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pw.print(prefix); pw.print("mDimSurface="); pw.println(mDimSurface);
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pw.print(prefix); pw.print("mDimShown="); pw.print(mDimShown);
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pw.print(" mLayer="); pw.print(mLayer);
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pw.print(" mDimColor=0x"); pw.println(Integer.toHexString(mDimColor));
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pw.print(prefix); pw.print("mLastDimWidth="); pw.print(mLastDimWidth);
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pw.print(" mLastDimWidth="); pw.println(mLastDimWidth);
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}
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}
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