/**
* ZoomScreenDemo.java
*
* Copyright � 1998-2011 Research In Motion Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License 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 License for the specific language governing permissions and
* limitations under the License.
*
* Note: For the sake of simplicity, this sample application may not leverage
* resource bundles and resource strings. However, it is STRONGLY recommended
* that application developers make use of the localization features available
* within the BlackBerry development platform to ensure a seamless application
* experience across a variety of languages and geographies. For more information
* on localizing your application, please refer to the BlackBerry Java Development
* Environment Development Guide associated with this release.
*/
package com.rim.samples.device.zoomscreendemo;
import net.rim.device.api.system.EncodedImage;
import net.rim.device.api.ui.TouchEvent;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.BitmapField;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.extension.container.ZoomScreen;
/**
* A sample application to demonstrate the ZoomScreen class
*/
public final class ZoomScreenDemo extends UiApplication {
/**
* Entry point for application
*
* @param args
* Command-line arguments (not used)
*/
public static void main(final String[] args) {
// Create a new instance of the application and make the currently
// running thread the application's event dispatch thread.
final UiApplication app = new ZoomScreenDemo();
app.enterEventDispatcher();
}
/**
* Creates a new ZoomScreenDemo object
*/
public ZoomScreenDemo() {
UiApplication.getUiApplication().invokeLater(new Runnable() {
public void run() {
Dialog.alert("Click trackpad or screen to zoom");
}
});
pushScreen(new ZoomScreenDemoScreen());
}
/**
* A main screen class for the Zoom Screen Demo application
*/
public final static class ZoomScreenDemoScreen extends MainScreen {
private final EncodedImage _image;
/**
* Creates a new ZoomScreenDemoScreen object
*/
public ZoomScreenDemoScreen() {
setTitle("Zoom Screen Demo");
_image = EncodedImage.getEncodedImageResource("img/building.jpg");
final BitmapField bitmapField =
new BitmapField(_image.getBitmap(), FIELD_HCENTER
| FOCUSABLE);
add(bitmapField);
}
/**
* @see net.rim.device.api.ui.Screen#navigationClick(int, int)
*/
protected boolean navigationClick(final int status, final int time) {
// Push a new ZoomScreen if trackpad or screen is clicked
UiApplication.getUiApplication().pushScreen(
new DemoZoomScreen(_image));
return true;
}
/**
* @see net.rim.device.api.ui.Screen#touchEvent(TouchEvent)
*/
protected boolean touchEvent(final TouchEvent message) {
if (message.getEvent() == TouchEvent.CLICK) {
UiApplication.getUiApplication().pushScreen(
new DemoZoomScreen(_image));
return true;
}
return super.touchEvent(message);
}
}
/**
* A ZoomScreen sub-class. The zoomedOutNearToFit() method is overidden to
* close the ZoomScreen when the image size is at or near the original size.
*/
static class DemoZoomScreen extends ZoomScreen {
/**
* Creates a new DemoZoomScreen object
*
* @param image
* The image to display in the ZoomScreen
*/
DemoZoomScreen(final EncodedImage image) {
super(image);
}
/**
* @see ZoomScreen#zoomedOutNearToFit()
*/
public void zoomedOutNearToFit() {
close();
}
}
}