/**
* Copyright (c) 2012-2013 Nokia Corporation. All rights reserved.
* Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation.
* Oracle and Java are trademarks or registered trademarks of Oracle and/or its
* affiliates. Other product and company names mentioned herein may be trademarks
* or trade names of their respective owners.
* See LICENSE.TXT for license information.
*/
package com.nokia.example.picasaviewer.util;
import com.nokia.mid.ui.frameanimator.FrameAnimator;
import com.nokia.mid.ui.frameanimator.FrameAnimatorListener;
import com.nokia.mid.ui.gestures.GestureEvent;
import com.nokia.mid.ui.gestures.GestureInteractiveZone;
import com.nokia.mid.ui.gestures.GestureListener;
import com.nokia.mid.ui.gestures.GestureRegistrationManager;
import org.tantalum.util.L;
import com.nokia.example.picasaviewer.ui.GestureCanvas;
/**
* Acts as a proxy between the GestureCanvas and the gesture framework of the
* Nokia UI API.
*/
public final class GestureHandler
implements FrameAnimatorListener,
GestureListener
{
// Constants
public static final int FRAME_ANIMATOR_VERTICAL = FrameAnimator.FRAME_ANIMATOR_VERTICAL;
public static final int FRAME_ANIMATOR_HORIZONTAL = FrameAnimator.FRAME_ANIMATOR_HORIZONTAL;
public static final int FRAME_ANIMATOR_FREE_ANGLE = FrameAnimator.FRAME_ANIMATOR_FREE_ANGLE;
public static final int FRAME_ANIMATOR_FRICTION_LOW = FrameAnimator.FRAME_ANIMATOR_FRICTION_LOW;
public static final int FRAME_ANIMATOR_FRICTION_MEDIUM = FrameAnimator.FRAME_ANIMATOR_FRICTION_MEDIUM;
public static final int FRAME_ANIMATOR_FRICTION_HIGH = FrameAnimator.FRAME_ANIMATOR_FRICTION_HIGH;
// Members
private final FrameAnimator animator = new FrameAnimator();
private GestureCanvas canvas = null;
private GestureInteractiveZone giz = null;
/**
* Constructor.
*/
public GestureHandler() {
try {
giz = new GestureInteractiveZone(GestureInteractiveZone.GESTURE_ALL);
}
catch (IllegalArgumentException e) {
//#debug
L.e(L.class.getName(), "Can not register GESTURE_ALL, backwards compatibility fallback", e);
// GESTURE_ALL had a different value in SDK 1.1 and 1.0
giz = new GestureInteractiveZone(63);
}
}
/**
* @see com.nokia.mid.ui.gestures.GestureListener#gestureAction(Object,
* GestureInteractiveZone, GestureEvent)
*/
public void gestureAction(final Object container,
final GestureInteractiveZone gestureInteractiveZone,
final GestureEvent gestureEvent)
{
switch (gestureEvent.getType()) {
case GestureInteractiveZone.GESTURE_PINCH:
canvas.gesturePinch(
gestureEvent.getPinchDistanceStarting(),
gestureEvent.getPinchDistanceCurrent(),
gestureEvent.getPinchDistanceChange(),
gestureEvent.getPinchCenterX(),
gestureEvent.getPinchCenterY(),
gestureEvent.getPinchCenterChangeX(),
gestureEvent.getPinchCenterChangeY());
break;
case GestureInteractiveZone.GESTURE_TAP:
canvas.gestureTap(
gestureEvent.getStartX(),
gestureEvent.getStartY());
break;
case GestureInteractiveZone.GESTURE_LONG_PRESS:
canvas.gestureLongPress(
gestureEvent.getStartX(),
gestureEvent.getStartY());
break;
case GestureInteractiveZone.GESTURE_LONG_PRESS_REPEATED:
canvas.gestureLongPressRepeated(
gestureEvent.getStartX(),
gestureEvent.getStartY());
break;
case GestureInteractiveZone.GESTURE_DRAG:
canvas.gestureDrag(
gestureEvent.getStartX(),
gestureEvent.getStartY(),
gestureEvent.getDragDistanceX(),
gestureEvent.getDragDistanceY());
break;
case GestureInteractiveZone.GESTURE_DROP:
canvas.gestureDrop(
gestureEvent.getStartX(),
gestureEvent.getStartY(),
gestureEvent.getDragDistanceX(),
gestureEvent.getDragDistanceY());
break;
case GestureInteractiveZone.GESTURE_FLICK:
canvas.gestureFlick(
gestureEvent.getStartX(),
canvas.getScrollY(),
gestureEvent.getFlickDirection(),
gestureEvent.getFlickSpeed(),
gestureEvent.getFlickSpeedX(),
gestureEvent.getFlickSpeedY());
break;
default:
break;
}
}
/**
* @see com.nokia.mid.ui.frameanimator.FrameAnimatorListener#animate(
* FrameAnimator, int, int, short, short, short, boolean)
*/
public void animate(final FrameAnimator animator,
final int x,
final int y,
final short delta,
final short deltaX,
final short deltaY,
final boolean lastFrame)
{
//#debug
L.i(L.class.getName(), "animate, y=" + y + " deltaY=" + deltaY);
canvas.animate(y, deltaY, lastFrame);
}
/**
* Sets the gesture canvas for this handler.
* @param canvas The gesture canvas associated with this handler.
*/
public void setCanvas(final GestureCanvas canvas) {
this.canvas = canvas;
}
/**
* Stops the animation.
*/
public void stopAnimator() {
System.out.println("GestureHandler.stopAnimator()");
animator.stop();
}
/**
* Animates drag.
* @param x The new X coordinate.
* @param y The new Y coordinate.
*/
public void animateDrag(final int x, final int y)
throws IllegalArgumentException
{
//#debug
L.i(L.class.getName(), "animate drag, y=" + y + ", x=" + x);
animator.drag(x, y);
}
/**
* Registers for gesture and animation events when the parent becomes
* visible.
*/
public void register(final int x, final int y) {
//#debug
L.i("Canvas " + canvas.getTitle(), "register");
onCanvasSizeChanged();
GestureRegistrationManager.register(canvas, giz);
GestureRegistrationManager.setListener(canvas, this);
animator.register(x, y, (short) 0, (short) 0, this);
}
/**
* Initiates a kintetic scroll.
*
* @see com.nokia.mid.ui.frameanimator.FrameAnimator#kineticScroll(int, int, int, float)
*/
public void kineticScroll(final int startSpeed,
final int direction,
final int friction,
final float angle)
{
//#debug
L.i(L.class.getName(), "animate start kinetic scroll, startSpeed=" + startSpeed);
animator.kineticScroll(startSpeed, direction, friction, angle);
}
/**
* Updates the rectangle bouding the gesture area based on the new size of
* the canvas.
*/
public void onCanvasSizeChanged() {
//#debug
L.i(L.class.getName(),
"onCanvasSizeChanged(): " + canvas.getWidth() +
"x" + canvas.getHeight());
giz.setRectangle(0, 0, canvas.getWidth(), canvas.getHeight());
}
}