Example usage for org.eclipse.jface.util Geometry set

Introduction

In this page you can find the example usage for org.eclipse.jface.util Geometry set.

Prototype

public static void set(Rectangle result, Rectangle toCopy) 

Source Link

Document

Sets result equal to toCopy

Usage

From source file:au.gov.ga.earthsci.jface.extras.information.AbstractInformationControlManager.java

License:Open Source License

/**
 * Computes the location of the information control depending on the
 * subject area and the size of the information control. This method attempts
 * to find a location at which the information control lies completely in the display's
 * client area while honoring the manager's default anchor. If this isn't possible using the
 * default anchor, the fallback anchors are tried out.
 *
 * @param subjectArea the information area
 * @param controlSize the size of the information control
 * @return the computed location of the information control
 */// w  w  w . j  a  va 2s .com
protected Point computeInformationControlLocation(Rectangle subjectArea, Point controlSize) {
    Rectangle subjectAreaDisplayRelative = Geometry.toDisplay(fSubjectControl, subjectArea);

    Point upperLeft;
    Anchor testAnchor = fAnchor;
    Rectangle bestBounds = null;
    int bestArea = Integer.MIN_VALUE;
    Anchor bestAnchor = null;
    do {

        upperLeft = computeLocation(subjectArea, controlSize, testAnchor);
        Monitor monitor = getClosestMonitor(subjectAreaDisplayRelative, testAnchor);
        if (updateLocation(upperLeft, controlSize, monitor.getClientArea(), testAnchor))
            return upperLeft;

        // compute available area for this anchor and update if better than best
        Rectangle available = computeAvailableArea(subjectAreaDisplayRelative, monitor.getClientArea(),
                testAnchor);
        Rectangle proposed = new Rectangle(upperLeft.x, upperLeft.y, controlSize.x, controlSize.y);
        available.intersect(proposed);
        int area = available.width * available.height;
        if (area > bestArea) {
            bestArea = area;
            bestBounds = available;
            bestAnchor = testAnchor;
        }

        testAnchor = getNextFallbackAnchor(testAnchor);

    } while (testAnchor != fAnchor && testAnchor != null);

    // no anchor is perfect - select the one with larges area and set the size to not overlap with the subjectArea
    if (bestAnchor != ANCHOR_GLOBAL)
        Geometry.set(controlSize, Geometry.getSize(bestBounds));
    return Geometry.getLocation(bestBounds);
}

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