Example usage for com.google.gwt.dom.client Touch getPageY

List of usage examples for com.google.gwt.dom.client Touch getPageY

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Introduction

In this page you can find the example usage for com.google.gwt.dom.client Touch getPageY.

Prototype

public final int getPageY()

Source Link

Document

Gets the touch y-position within the browser document.

Usage

From source file:ca.wimsc.client.common.widgets.google.Scroller.java

License:Apache License

/**
 * The object has been dragged to a new position.
 * /*from   w  w w. j  a  v a  2 s. com*/
 * @param e
 *            The touchmove event.
 */
@Override
public void onDragMove(TouchEvent e) {
    com.google.gwt.dom.client.Touch touch = TouchHandler.getTouchFromEvent(e);
    Point touchCoord = new Point(touch.getPageX(), touch.getPageY());

    assert touchStartPosition != null : "Touch start not set";
    assert contentStartOffset != null : "Content start not set";

    Point touchStart = touchStartPosition;
    Point contentStart = contentStartOffset;

    Point diffXY = touchCoord.minus(touchStart);
    Point newXY = contentStart.plus(diffXY);

    // If they are dragging beyond bounds of frame then we will start
    // backing off on the effect of their drag.
    newXY.y = adjustValue(newXY.y, minPoint.y);

    // If horizontal scrolling is enabled and the content is wider than
    // the frame, then we should calculate a new X position.
    if (shouldScrollHorizontally()) {
        newXY.x = adjustValue(newXY.x, minPoint.x);
    } else {
        newXY.x = 0;
    }

    setContentOffset(newXY.x, newXY.y);
}

From source file:ca.wimsc.client.common.widgets.google.Scroller.java

License:Apache License

/**
 * Touch has begun on the scrollable area. Prepare the scrollable area for possible movement.
 * //from ww w  .j  av  a 2s.c o m
 * @param e
 *            The touchstart event.
 * @return True if the object is eligible for dragging.
 */
@Override
public boolean onTouchStart(TouchEvent e) {
    reconfigure();
    Touch touch = TouchHandler.getTouchFromEvent(e);

    // Save the initial position of touch and content.
    touchStartPosition = new Point(touch.getPageX(), touch.getPageY());
    contentStartOffset = new Point(contentOffset);

    // If the content is currently decelerating then we should stop it
    // immediately.
    momentum.stop();

    // Content should be snapped back in to place at this point if it is
    // currently
    // offset.
    snapContentOffsetToBounds();

    // Returning true here indicates that we are accepting a drag sequence.
    return true;
}

From source file:ca.wimsc.client.common.widgets.google.TouchHandler.java

License:Apache License

/**
 * Touch end handler./*from   w  w  w.ja v a 2s .c o m*/
 *
 * @param e The touchend event.
 */
private void onEnd(TouchEvent e) {
    touching = false;
    if (touchDelegate != null) {
        touchDelegate.onTouchEnd(e);
    }

    if (!tracking || dragDelegate == null) {
        return;
    }

    com.google.gwt.dom.client.Touch touch = getLastTouch();
    Point touchCoordinate = new Point(touch.getPageX(), touch.getPageY());

    if (dragging) {
        endTime = e.getTimeStamp();
        endTouchPosition = touchCoordinate;
        dragDelegate.onDragEnd(e);

        if ((Math.abs(endTouchPosition.x - startTouchPosition.x) > CLICK_BUST_THRESHOLD)
                || (Math.abs(endTouchPosition.y - startTouchPosition.y) > CLICK_BUST_THRESHOLD)) {
            bustNextClick = true;
        }
    }

    endTracking();
}

From source file:ca.wimsc.client.common.widgets.google.TouchHandler.java

License:Apache License

/**
 * Touch move handler./*  ww  w .j a v a2  s.c o m*/
 *
 * @param e The touchmove event.
 */
@SuppressWarnings("unused")
private void onMove(final TouchEvent e) {
    if (!tracking || dragDelegate == null) {
        return;
    }

    // Prevent native scrolling.
    e.preventDefault();

    com.google.gwt.dom.client.Touch touch = getTouchFromEvent(e);
    Point touchCoordinate = new Point(touch.getPageX(), touch.getPageY());

    double moveX = lastTouchPosition.x - touchCoordinate.x;
    double moveY = lastTouchPosition.y - touchCoordinate.y;
    totalMoveX += Math.abs(moveX);
    totalMoveY += Math.abs(moveY);
    lastTouchPosition.x = touchCoordinate.x;
    lastTouchPosition.y = touchCoordinate.y;

    // Handle case where they are getting close to leaving the window.
    // End events are unreliable when the touch is leaving the viewport area.
    // If they are close to the bottom or the right, and we don't get any other
    // touch events for another 100ms, assume they have left the screen. This
    // does not seem to be a problem for scrolling off the top or left of the
    // viewport area.
    if (scrollOffTimer != null) {
        scrollOffTimer.cancel();
    }
    if ((Window.getClientHeight() - touchCoordinate.y) < TOUCH_END_WORKAROUND_THRESHOLD
            || (Window.getClientWidth() - touchCoordinate.x) < TOUCH_END_WORKAROUND_THRESHOLD) {

        scrollOffTimer = new Timer() {
            @Override
            public void run() {
                e.setTimeStamp(Duration.currentTimeMillis());
                onEnd(e);
            }
        };
        scrollOffTimer.schedule(100);
    }

    boolean firstDrag = false;
    if (!dragging) {
        if (totalMoveY > MIN_TRACKING_FOR_DRAG || totalMoveX > MIN_TRACKING_FOR_DRAG) {
            dragging = true;
            firstDrag = true;
            dragDelegate.onDragStart(e);
        }
    }

    if (dragging) {
        dragDelegate.onDragMove(e);

        lastEvent = e;

        // This happens when they are dragging slowly. If they are dragging slowly
        // then we should reset the start time and position to where they are now.
        // This will be important during the drag end when we report to the
        // draggable delegate what kind of drag just happened.
        if (e.getTimeStamp() - recentTime > MAX_TRACKING_TIME) {
            recentTime = e.getTimeStamp();
            recentTouchPosition = touchCoordinate;
        }
    }
}

From source file:ca.wimsc.client.common.widgets.google.TouchHandler.java

License:Apache License

/**
 * Touch start handler./*from   w w w.j  a v a 2s  . c o  m*/
 *
 * @param e The touchstart event.
 * @private
 */
private void onStart(TouchEvent e) {
    // Ignore the touch if it is manufactured or if there is already a
    // touch happening.
    if (touching) {
        return;
    }

    touching = true;

    com.google.gwt.dom.client.Touch touch = getTouchFromEvent(e);
    Point touchCoordinate = new Point(touch.getPageX(), touch.getPageY());

    // Do not start tracking if...
    // - we already are tracking
    // - the touchable delegate refuses to accept the start event at this time
    // - there is no draggable delegate
    if ((dragDelegate == null) || ((touchDelegate != null) && !touchDelegate.onTouchStart(e))) {
        return;
    }

    startTouchPosition = touchCoordinate;
    recentTouchPosition = touchCoordinate;
    recentTime = e.getTimeStamp();
    lastEvent = e;
    lastTouchPosition = new Point(touchCoordinate);

    beginTracking();
}

From source file:com.appkit.ui.client.events.recognizer.longtap.LongTapRecognizer.java

License:Apache License

@Override
public void onTouchMove(TouchMoveEvent event) {
    switch (state) {
    case WAITING:
    case FINGERS_DOWN:
    case FINGERS_UP:
        // compare positions
        JsArray<Touch> currentTouches = event.getTouches();
        for (int i = 0; i < currentTouches.length(); i++) {
            Touch currentTouch = currentTouches.get(i);
            for (int j = 0; j < startPositions.length(); j++) {
                TouchCopy startTouch = startPositions.get(j);
                if (currentTouch.getIdentifier() == startTouch.getIdentifier()) {
                    if (Math.abs(currentTouch.getPageX() - startTouch.getPageX()) > distance
                            || Math.abs(currentTouch.getPageY() - startTouch.getPageY()) > distance) {
                        state = State.INVALID;
                        break;
                    }/*from   w w w  .j  a v  a 2 s .  c o m*/
                }
                if (state == State.INVALID) {
                    break;
                }
            }
        }

        break;

    default:
        state = State.INVALID;
        break;
    }
}

From source file:com.appkit.ui.client.events.recognizer.pinch.PinchRecognizer.java

License:Apache License

@Override
public void onTouchMove(TouchMoveEvent event) {
    switch (state) {
    case TWO_FINGER:

        Touch touch1 = event.getTouches().get(0);
        Touch touch2 = event.getTouches().get(1);

        int left = offsetProvider.getLeft();
        int top = offsetProvider.getTop();

        int x1 = touch1.getPageX() - left;
        int y1 = touch1.getPageY() - top;
        int x2 = touch2.getPageX() - left;
        int y2 = touch2.getPageY() - top;

        double newDistance = Math.sqrt(Math.pow(x1 - x2, 2) + Math.pow(y1 - y2, 2));
        int x = (x1 + x2) / 2;
        int y = (y1 + y2) / 2;

        getEventPropagator().fireEvent(source, new PinchEvent(x, y, distance / newDistance));
        distance = newDistance;/*  ww  w.j  a  v  a2  s .co m*/

        break;

    default:
        state = State.INVALID;
        break;
    }
}

From source file:com.appkit.ui.client.events.recognizer.swipe.SwipeRecognizer.java

License:Apache License

@Override
public void onTouchMove(TouchMoveEvent event) {
    Touch touch = event.getTouches().get(0);

    switch (state) {
    case INVALID:

        break;//w  w  w.  ja v  a2  s  .  c o  m
    case READY:
        // WTF?
        state = State.INVALID;
        break;
    case FINDER_DOWN:

        // log(" X: " + touch.getPageX() + " old: " + touchStart.getPageX() + " test: " + x);

        if (Math.abs(touch.getPageX() - x) >= threshold) {
            state = State.FOUND_DIRECTION;

            direction = touch.getPageX() - x > 0 ? SwipeEvent.DIRECTION.LEFT_TO_RIGHT
                    : SwipeEvent.DIRECTION.RIGHT_TO_LEFT;

            SwipeStartEvent swipeStartEvent = new SwipeStartEvent(TouchCopy.copy(touch), touch.getPageX() - x,
                    direction);

            getEventPropagator().fireEvent(source, swipeStartEvent);

        } else {
            if (Math.abs(touch.getPageY() - y) >= threshold) {
                state = State.FOUND_DIRECTION;

                direction = touch.getPageY() - y > 0 ? SwipeEvent.DIRECTION.TOP_TO_BOTTOM
                        : SwipeEvent.DIRECTION.BOTTOM_TO_TOP;

                SwipeStartEvent swipeStartEvent = new SwipeStartEvent(TouchCopy.copy(touch),
                        touch.getPageY() - y, direction);

                getEventPropagator().fireEvent(source, swipeStartEvent);

            }

        }
        break;

    case FOUND_DIRECTION:

        switch (direction) {
        case TOP_TO_BOTTOM:
        case BOTTOM_TO_TOP:
            lastDistance = Math.abs(touch.getPageY() - y);
            getEventPropagator().fireEvent(source, new SwipeMoveEvent(TouchCopy.copy(touch),
                    lastDistance > minDistance, lastDistance, direction));
            break;

        case LEFT_TO_RIGHT:
        case RIGHT_TO_LEFT:
            lastDistance = Math.abs(touch.getPageX() - x);
            getEventPropagator().fireEvent(source, new SwipeMoveEvent(TouchCopy.copy(touch),
                    lastDistance > minDistance, lastDistance, direction));

            break;

        default:
            break;
        }

        break;

    default:
        break;
    }
}

From source file:com.appkit.ui.client.events.recognizer.TapRecognizer.java

License:Apache License

@Override
public void onTouchMove(TouchMoveEvent event) {
    Touch touch = event.getTouches().get(0);
    if (Math.abs(touch.getPageX() - start_x) > distance || Math.abs(touch.getPageY() - start_y) > distance) {
        hasMoved = true;/* w  w w.  j  ava2s.c o m*/
    }
}

From source file:com.appkit.ui.client.events.touch.TouchCopy.java

License:Apache License

public static TouchCopy copy(Touch touch) {
    return new TouchCopy(touch.getPageX(), touch.getPageY(), touch.getIdentifier());
}