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This is a backport of OpenJFX 8 to run on Java 7.
The newest version!
/*
* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.javafx.tk.quantum;
import java.nio.IntBuffer;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.glass.ui.Pixels;
/**
* EmbeddedState is intended to provide for a shadow copy the View/Scene state
* similar to the shadow Graph, providing a static snapshot until the Scene
* is rendered. EmbeddedState captures state that is specific to embedding.
*/
final class EmbeddedState extends SceneState {
public EmbeddedState(GlassScene vs) {
super(vs);
}
/**
* Put the pixels on the screen.
*
* @param pixels - the pixels to draw
* @param uploadCount - the number of uploads (can be null)
*/
public void uploadPixels(Pixels pixels, AtomicInteger uploadCount) {
if (isValid()) {
EmbeddedScene escene = (EmbeddedScene) scene;
// Pixels are always stored in an IntBuffer for uploading
escene.textureBits = (IntBuffer) pixels.getPixels();
escene.host.repaint();
if (uploadCount != null) {
uploadCount.decrementAndGet();
}
}
}
/**
* Drawing can occur when there is an embedded scene that has a host.
*
* @return true if drawing can occur; false otherwise
*
* May be called on any thread.
*/
public boolean isValid() {
EmbeddedScene escene = (EmbeddedScene) scene;
return escene != null && escene.host != null && getWidth() > 0 && getHeight() > 0;
}
/** Updates the state of this object based on the current state of its
* nativeWindow.
*
* May only be called from the event thread.
*/
public void update() {
super.update();
EmbeddedScene escene = (EmbeddedScene) scene;
if (scene != null) {
viewWidth = escene.width;
viewHeight = escene.height;
// These variables and others from the super class need be kept up to date to
// minimize rendering. For now, claim that the embedded scene is always visible
// and not minimized so that rendering can occur
isWindowVisible = true;
isWindowMinimized = false;
}
}
}