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

Introduction

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

Prototype

public JsArray<Touch> getTargetTouches() 

Source Link

Document

Get an array of Touch touches all touch which originated at the same target as the current touch event.

Usage

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);
        }/*from  w w  w.j  ava 2 s .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);// w  w  w  . java 2 s.  c o 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// w w  w  .j a va2s. co 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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From source file:org.geomajas.puregwt.client.controller.TouchNavigationController.java

License:Open Source License

/**
 * Method used to calculate exact middle point between multiple touches of a touch events.
 * /*  ww  w  . jav a  2 s  . com*/
 * @param event a touch event
 * @return middle point
 */
private 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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