96 lines
3.4 KiB
Java
96 lines
3.4 KiB
Java
/*
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* Copyright 2009, The Android Open Source Project
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.android.sampleplugin;
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import android.content.Context;
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import android.graphics.PixelFormat;
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import android.view.SurfaceHolder;
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import android.view.SurfaceView;
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import android.view.SurfaceHolder.Callback;
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public class PaintSurface extends SurfaceView {
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static {
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//needed for jni calls
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System.loadLibrary("sampleplugin");
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}
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private final int npp;
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private boolean validNPP = true;
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private Object nppLock = new Object();
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public PaintSurface(Context context, int NPP, int width, int height) {
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super(context);
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this.npp = NPP;
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this.getHolder().setFormat(PixelFormat.RGBA_8888);
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this.getHolder().addCallback(new Callback() {
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public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
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synchronized (nppLock) {
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if (validNPP) {
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nativeSurfaceChanged(npp, format, width, height);
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}
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}
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}
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public void surfaceCreated(SurfaceHolder holder) {
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synchronized (nppLock) {
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if (validNPP) {
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nativeSurfaceCreated(npp);
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}
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}
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}
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public void surfaceDestroyed(SurfaceHolder holder) {
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synchronized (nppLock) {
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if (validNPP) {
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nativeSurfaceDestroyed(npp);
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}
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}
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}
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});
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// sets the plugin's surface to a fixed size
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this.getHolder().setFixedSize(width, height);
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// ensure that the view system is aware that we will be drawing
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this.setWillNotDraw(false);
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}
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// called by JNI
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private void invalidateNPP() {
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synchronized (nppLock) {
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validNPP = false;
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}
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}
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private native void nativeSurfaceCreated(int npp);
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private native void nativeSurfaceChanged(int npp, int format, int width, int height);
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private native void nativeSurfaceDestroyed(int npp);
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}
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