Example usage for com.google.gwt.event.dom.client TouchEvent getTouches

Introduction

In this page you can find the example usage for com.google.gwt.event.dom.client TouchEvent getTouches.

Prototype

public JsArray<Touch> getTouches() 

Source Link

Document

Get an array of all current Touch touches .

Usage

From source file:com.ait.lienzo.client.widget.LienzoHandlerManager.java

License:Open Source License

private final List<TouchPoint> getTouches(final TouchEvent<?> event) {
    final JsArray<Touch> jsarray = event.getTouches();

    final Element element = event.getRelativeElement();

    if ((null != jsarray) && (jsarray.length() > 0)) {
        final int size = jsarray.length();

        final ArrayList<TouchPoint> touches = new ArrayList<TouchPoint>(size);

        for (int i = 0; i < size; i++) {
            final Touch touch = jsarray.get(i);

            touches.add(new TouchPoint(touch.getRelativeX(element), touch.getRelativeY(element)));
        }//from  w w w.  j a  v  a2  s  . c  om
        return touches;
    } else {
        int x = event.getNativeEvent().getClientX() - element.getAbsoluteLeft() + element.getScrollLeft()
                + element.getOwnerDocument().getScrollLeft();

        int y = event.getNativeEvent().getClientY() - element.getAbsoluteTop() + element.getScrollTop()
                + element.getOwnerDocument().getScrollTop();

        return Arrays.asList(new TouchPoint(x, y));
    }
}

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From source file:com.allen_sauer.gwt.dnd.client.MouseDragHandler.java

License:Apache License

private void onTouchEndorCancel(TouchEvent<?> event) {
    if (event.getTouches().length() != 0) {
        // ignore multiple fingers for now
        return;// w  w w.  j a v a 2s .  c  om
    }

    // in case mouse down occurred elsewhere
    if (mouseDownWidget == null) {
        return;
    }

    try {
        if (dragging == NOT_DRAGGING) {
            doSelectionToggle(event);
            return;
        }

        // Proceed with the drop
        try {
            drop(context.mouseX, context.mouseY);
            if (dragging != ACTIVELY_DRAGGING) {
                doSelectionToggle(event);
            }
        } finally {
            dragEndCleanup();
        }
    } finally {
        mouseDownWidget = null;
        dragEndCleanup();
    }
}

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From source file:com.emitrom.lienzo.client.widget.LienzoHandlerManager.java

License:Open Source License

private final ArrayList<TouchPoint> getTouches(TouchEvent<?> event) {
    ArrayList<TouchPoint> touches = new ArrayList<TouchPoint>();

    JsArray<Touch> jsarray = event.getTouches();

    Element element = event.getRelativeElement();

    if ((null != jsarray) && (jsarray.length() > 0)) {
        int size = jsarray.length();

        for (int i = 0; i < size; i++) {
            Touch touch = jsarray.get(i);

            touches.add(new TouchPoint(touch.getRelativeX(element), touch.getRelativeY(element)));
        }//from  ww w.j  a va 2  s .c o m
    } else {
        int x = event.getNativeEvent().getClientX() - element.getAbsoluteLeft() + element.getScrollLeft()
                + element.getOwnerDocument().getScrollLeft();

        int y = event.getNativeEvent().getClientY() - element.getAbsoluteTop() + element.getScrollTop()
                + element.getOwnerDocument().getScrollTop();

        touches.add(new TouchPoint(x, y));
    }
    return touches;
}

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From source file:com.vaadin.addon.timeline.gwt.client.VTimelineBrowser.java

/**
 * Called when a user is dragging the graph with n-amount of fingers
 * // w  w w.  j  a  v a  2 s.c  o  m
 * @param event
 */
private void touchMove(TouchEvent<?> event) {
    if (event.getTouches().length() > 1) {
        Touch t1 = event.getTouches().get(0);
        Touch t2 = event.getTouches().get(1);

        int left, right;
        if (t1.getClientX() > t2.getClientX()) {
            left = t2.getClientX() - getElement().getAbsoluteLeft();
            right = t1.getClientX() - getElement().getAbsoluteLeft();
        } else {
            left = t1.getClientX() - getElement().getAbsoluteLeft();
            right = t2.getClientX() - getElement().getAbsoluteLeft();
        }

        // Boundary checks
        if (left < 0) {
            left = 0;
        }
        if (right >= getCanvasWidth()) {
            right = getCanvasWidth();
        }

        scroller.setLeftPosition(left);
        scroller.setRightPosition(right);
        scroller.lockSize();
        refreshSelection();

    } else if (!multitouching) {
        moveDragging(event.getNativeEvent());
    }
}

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From source file:com.vaadin.addon.timeline.gwt.client.VTimelineDisplay.java

/**
 * Triggered whenever a touch event occurs
 * //from   ww  w.  j a  v  a  2 s.co m
 * @param event
 *            The touch event
 */
private void touchMove(TouchEvent<?> event) {
    event.preventDefault();
    if (event.getTouches().length() > 1) {
        Touch t1 = event.getTouches().get(0);
        Touch t2 = event.getTouches().get(1);
        int fingerDistance = Math.abs(t1.getClientX() - t2.getClientX());

        if (t1.getClientX() < t2.getClientX()) {
            /*
             * t1 is left finger, t2 is right finger
             */
            lastMouseX = t1.getClientX() + fingerDistance / 2;
        } else {
            /*
             * t2 is left finger, t1 is right finger
             */
            lastMouseX = t2.getClientX() + fingerDistance / 2;
        }

        if (lastTouchFingerDistance > 0) {
            if (fingerDistance > lastTouchFingerDistance) {
                zoomOut(lastMouseX, Math.abs(lastTouchFingerDistance - fingerDistance) / 10);
            } else {
                zoomIn(lastMouseX, Math.abs(lastTouchFingerDistance - fingerDistance) / 10);
            }
        } else {
            lastTouchFingerDistance = fingerDistance;
        }
    } else if (!multitouching) {
        lastMouseX = Util.getTouchOrMouseClientX(event.getNativeEvent());
        moveDragging(event.getNativeEvent());
    }
}

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From source file:edu.caltech.ipac.firefly.visualize.PVMouse.java

private ScreenPt makeScreenPt(TouchEvent ev) {
    Touch t = (Touch) ev.getTouches().get(0);
    return new ScreenPt(_pv.getScrollX() + t.getClientX() - _mouseMoveArea.getAbsoluteLeft(),
            _pv.getScrollY() + t.getClientY() - _mouseMoveArea.getAbsoluteTop());
}

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From source file:nl.mpi.tg.eg.experiment.client.listener.TouchInputCapture.java

License:Open Source License

private void onAnyTouch(TouchEvent event) {
    recordTouches(event.getTouches());
    bumpTouchRecords();/*ww  w.j av  a2 s.  com*/
    //        touchesToDebugLabel(event.getTouches());
}

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From source file:nl.mpi.tg.eg.experiment.client.view.ColourPickerCanvasView.java

License:Open Source License

private void setColour(TouchEvent event, Canvas targetCanvas, VerticalPanel targetPanel) {
    if (event.getTouches().length() > 0) {
        final JsArray<Touch> touches = event.getTargetTouches();
        if (touches.length() > 0) {
            Touch touch = touches.get(0);
            setColour(touch.getRelativeX(targetCanvas.getElement()),
                    touch.getRelativeY(targetCanvas.getElement()), targetCanvas, targetPanel);
        }/*ww w  .ja  v  a 2s  .c o  m*/
    }
}

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From source file:nl.mpi.tg.eg.experiment.client.view.ColourPickerCanvasView.java

License:Open Source License

private void setHue(TouchEvent event, Canvas targetCanvas) {
    if (event.getTouches().length() > 0) {
        final JsArray<Touch> touches = event.getTargetTouches();
        if (touches.length() > 0) {
            Touch touch = touches.get(0);
            setHue(touch.getRelativeX(targetCanvas.getElement()), touch.getRelativeY(targetCanvas.getElement()),
                    targetCanvas);//www.  ja va  2  s  . co m
        }
    }
}

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From source file:org.geomajas.gwt2.client.controller.TouchNavigationController.java

License:Open Source License

/**
 * Method used to calculate exact middle point between multiple touches of a touch events.
 *
 * @param event a touch event//from   w  w  w  . j a  v a2  s .c  o  m
 * @return middle point
 */
protected Coordinate getMidPoint(TouchEvent<?> event) {
    Coordinate[] coords = new Coordinate[event.getTouches().length()];
    for (int i = 0; i < event.getTargetTouches().length(); i++) {
        coords[i] = new Coordinate(event.getTouches().get(i).getClientX(),
                event.getTouches().get(i).getClientY());
    }

    double x = 0;
    double y = 0;

    for (Coordinate coord : coords) {
        x += coord.getX();
        y += coord.getY();
    }

    x /= coords.length;
    y /= coords.length;

    return new Coordinate(x, y);
}

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