/*
* TrackpadGesturesScreen.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.ui.uitoolkitdemo;
import net.rim.device.api.system.Application;
import net.rim.device.api.ui.TouchEvent;
import net.rim.device.api.ui.TouchGesture;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.input.InputSettings;
import net.rim.device.api.ui.input.NavigationDeviceSettings;
/**
* A class demonstrating the use of the Touch APIs to recognize trackpad
* gestures
*/
class TrackpadGesturesScreen extends MainScreen {
LabelField _log;
/**
* Creates a new TrackPadGesturesScreen object
*/
public TrackpadGesturesScreen() {
// Tell the screen to handle trackpad swipes
final InputSettings settings =
NavigationDeviceSettings.createEmptySet();
settings.set(NavigationDeviceSettings.DETECT_SWIPE, 1);
addInputSettings(settings);
// Create label fields for directions/display of gestures
final LabelField directions =
new LabelField(
"Swipe the trackpad. Swipe direction will be displayed on screen.");
_log = new LabelField("");
// Add fields to screen
add(directions);
add(_log);
}
/**
* @see net.rim.device.api.ui.Field#touchEvent(TouchEvent)
*/
protected boolean touchEvent(final TouchEvent event) {
if (event.getEvent() == TouchEvent.GESTURE) {
final TouchGesture gesture = event.getGesture();
// Handle only trackpad swipe gestures
if (gesture.getEvent() == TouchGesture.NAVIGATION_SWIPE) {
final int direction = gesture.getSwipeDirection();
Application.getApplication().invokeLater(new Runnable() {
/**
* @see Runnable#run()
*/
public void run() {
// Determine the cardinal direction of the swipe
String cardinalDirection = "";
if (direction == TouchGesture.SWIPE_NORTH) {
cardinalDirection = "North";
} else if (direction == (TouchGesture.SWIPE_NORTH | TouchGesture.SWIPE_EAST)) {
cardinalDirection = "North-East";
} else if (direction == TouchGesture.SWIPE_EAST) {
cardinalDirection = "East";
} else if (direction == (TouchGesture.SWIPE_EAST | TouchGesture.SWIPE_SOUTH)) {
cardinalDirection = "South-East";
} else if (direction == TouchGesture.SWIPE_SOUTH) {
cardinalDirection = "South";
} else if (direction == (TouchGesture.SWIPE_SOUTH | TouchGesture.SWIPE_WEST)) {
cardinalDirection = "South-West";
} else if (direction == TouchGesture.SWIPE_WEST) {
cardinalDirection = "West";
} else if (direction == (TouchGesture.SWIPE_WEST | TouchGesture.SWIPE_NORTH)) {
cardinalDirection = "North-West";
}
// Output swipe direction to screen
_log.setText("Swipe direction: " + cardinalDirection);
}
});
return true;
}
}
return false;
}
}