com.sun.javafx.tk.quantum.EmbeddedState Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package com.sun.javafx.tk.quantum;
import com.sun.glass.ui.Pixels;
import com.sun.prism.PixelSource;
/**
* 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 source - the source for the Pixels object to be uploaded
*/
@Override
public void uploadPixels(PixelSource source) {
if (isValid()) {
Pixels pixels = source.getLatestPixels();
if (pixels != null) {
try {
EmbeddedScene escene = (EmbeddedScene) scene;
// Pixels are always stored in an IntBuffer for uploading
escene.uploadPixels(pixels);
} finally {
source.doneWithPixels(pixels);
}
}
} else {
source.skipLatestPixels();
}
}
/**
* 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.
*/
@Override
public boolean isValid() {
return scene != 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.
*/
@Override
public void update() {
super.update();
float scalex = ((EmbeddedScene) scene).getRenderScaleX();
float scaley = ((EmbeddedScene) scene).getRenderScaleY();
update(1.0f, 1.0f, scalex, scaley, scalex, scaley);
if (scene != null) {
// These variables and others from the superclass 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;
}
}
}