/*
* OpenVGDemoScreen.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.openvgdemo;
import net.rim.device.api.ui.TouchEvent;
import net.rim.device.api.ui.TouchGesture;
import net.rim.device.api.ui.container.MainScreen;
/**
* A subclass of MainScreen that allows a user to switch the display between
* this application's two VGField implementations.
*/
public class OpenVGDemoScreen extends MainScreen {
// VGField for the path example
private final ParsedPathVGField _pathField;
// VGField for the animated image example
private final CreateImageVGField _createImageField;
// Indicates which field is currently displayed
private boolean _drawPathFieldLoaded;
/**
* Constructs a new OpenVGDemoScreen object
*/
public OpenVGDemoScreen() {
// Create the two VGField examples
_pathField = new ParsedPathVGField();
_createImageField = new CreateImageVGField();
// Add the path field to begin
add(_pathField);
_drawPathFieldLoaded = true;
}
/**
* Toggles the display between the two VGField examples
*/
private void swapFields() {
if (_drawPathFieldLoaded) {
replace(_pathField, _createImageField);
_drawPathFieldLoaded = false;
} else {
replace(_createImageField, _pathField);
_drawPathFieldLoaded = true;
}
}
/**
* @see net.rim.device.api.ui.Screen#invokeAction(int)
*/
protected boolean invokeAction(final int action) {
if (action == ACTION_INVOKE) {
swapFields();
return true;
}
return super.invokeAction(action);
}
/**
* @see net.rim.device.api.ui.Screen#touchEvent(TouchEvent)
*/
protected boolean touchEvent(final TouchEvent message) {
final TouchGesture touchGesture = message.getGesture();
if (touchGesture != null) {
final int event = touchGesture.getEvent();
if (event == TouchGesture.TAP) {
swapFields();
return true;
}
}
return super.touchEvent(message);
}
}