org.microemu.app.ui.swt.SwtDisplayComponent Maven / Gradle / Ivy
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/*
* MicroEmulator
* Copyright (C) 2001-2003 Bartek Teodorczyk
*
* It is licensed under the following two licenses as alternatives:
* 1. GNU Lesser General Public License (the "LGPL") version 2.1 or any newer version
* 2. Apache License (the "AL") Version 2.0
*
* You may not use this file except in compliance with at least one of
* the above two licenses.
*
* You may obtain a copy of the LGPL at
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
*
* You may obtain a copy of the AL at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the LGPL or the AL for the specific language governing permissions and
* limitations.
*/
package org.microemu.app.ui.swt;
import javax.microedition.lcdui.Displayable;
import org.eclipse.swt.widgets.Canvas;
import org.microemu.DisplayAccess;
import org.microemu.DisplayComponent;
import org.microemu.MIDletAccess;
import org.microemu.MIDletBridge;
import org.microemu.app.ui.DisplayRepaintListener;
import org.microemu.device.Device;
import org.microemu.device.DeviceFactory;
import org.microemu.device.MutableImage;
import org.microemu.device.swt.SwtDeviceDisplay;
import org.microemu.device.swt.SwtDisplayGraphics;
import org.microemu.device.swt.SwtMutableImage;
//TODO extends Canvas like in swing version
public class SwtDisplayComponent implements DisplayComponent
{
private Canvas deviceCanvas;
private SwtMutableImage displayImage = null;
private DisplayRepaintListener displayRepaintListener;
private Runnable redrawRunnable = new Runnable()
{
public void run()
{
if (!deviceCanvas.isDisposed()) {
deviceCanvas.redraw();
}
}
};
SwtDisplayComponent(Canvas deviceCanvas)
{
this.deviceCanvas = deviceCanvas;
}
public void addDisplayRepaintListener(DisplayRepaintListener l)
{
displayRepaintListener = l;
}
public void removeDisplayRepaintListener(DisplayRepaintListener l)
{
if (displayRepaintListener == l) {
displayRepaintListener = null;
}
}
public MutableImage getDisplayImage()
{
return displayImage;
}
public void paint(SwtGraphics gc)
{
synchronized (this) {
if (displayImage != null) {
gc.drawImage(displayImage.img, 0, 0);
}
}
}
public void repaintRequest(int x, int y, int width, int height)
{
if (!deviceCanvas.isDisposed()) {
MIDletAccess ma = MIDletBridge.getMIDletAccess();
if (ma == null) {
return;
}
DisplayAccess da = ma.getDisplayAccess();
if (da == null) {
return;
}
Displayable current = da.getCurrent();
if (current == null) {
return;
}
Device device = DeviceFactory.getDevice();
SwtMutableImage image = new SwtMutableImage(
device.getDeviceDisplay().getFullWidth(), device.getDeviceDisplay().getFullHeight());
SwtGraphics gc = ((SwtDisplayGraphics) image.getGraphics()).g;
try {
SwtDeviceDisplay deviceDisplay = (SwtDeviceDisplay) device.getDeviceDisplay();
deviceDisplay.paintDisplayable(gc, x, y, width, height);
if (!deviceDisplay.isFullScreenMode()) {
deviceDisplay.paintControls(gc);
}
} finally {
gc.dispose();
}
synchronized (this) {
if (displayImage != null) {
displayImage.img.dispose();
}
displayImage = image;
}
fireDisplayRepaint(displayImage);
deviceCanvas.getDisplay().asyncExec(redrawRunnable);
}
}
private void fireDisplayRepaint(MutableImage image)
{
if (displayRepaintListener != null) {
displayRepaintListener.repaintInvoked(image);
}
}
}