dsto.dfc.swt.util
Class Geometry

java.lang.Object
  dsto.dfc.swt.util.Geometry

public final class Geometry
extends Object

Basic geometrical utilities for SWT.

Author:

mpp

Field Summary

static int	BOTTOM
static int	BOTTOM_LEFT
static int	BOTTOM_RIGHT
static int	CENTER
static int	LEFT
static int	MID_BOTTOM
static int	MID_LEFT
static int	MID_RIGHT
static int	MID_TOP
static int	RIGHT
static int	TOP
static int	TOP_LEFT
static int	TOP_RIGHT

Method Summary

static org.eclipse.swt.graphics.Point	bumpRectangle(org.eclipse.swt.graphics.Rectangle windowRect) Return a rectangle's position, adjusting so it does not go outside the screen.
static void	bumpRectangle(org.eclipse.swt.graphics.Rectangle parentRect, org.eclipse.swt.graphics.Rectangle childRect) Ensure that childRect is in parentRect, and move it into it if not.
static boolean	contains(org.eclipse.swt.graphics.Rectangle r1, org.eclipse.swt.graphics.Rectangle r2) Test if one rectangle fully contains another.
static int	offsetForAlignment(int parentLength, int childLength, int alignment) Calculate offset from a parent length necessary to align a child length.
static org.eclipse.swt.graphics.Point	offsetForAlignment(org.eclipse.swt.graphics.Point parentSize, org.eclipse.swt.graphics.Point childSize, int alignment) Calculate offset of a child region from a parent region necessary to align child region.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CENTER

public static final int CENTER

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Constant Field Values

LEFT

public static final int LEFT

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Constant Field Values

RIGHT

public static final int RIGHT

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Constant Field Values

TOP

public static final int TOP

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Constant Field Values

BOTTOM

public static final int BOTTOM

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Constant Field Values

TOP_LEFT

public static final int TOP_LEFT

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Constant Field Values

MID_TOP

public static final int MID_TOP

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Constant Field Values

TOP_RIGHT

public static final int TOP_RIGHT

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Constant Field Values

MID_RIGHT

public static final int MID_RIGHT

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Constant Field Values

BOTTOM_RIGHT

public static final int BOTTOM_RIGHT

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Constant Field Values

MID_BOTTOM

public static final int MID_BOTTOM

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Constant Field Values

BOTTOM_LEFT

public static final int BOTTOM_LEFT

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Constant Field Values

MID_LEFT

public static final int MID_LEFT

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Constant Field Values

Method Detail

offsetForAlignment

public static org.eclipse.swt.graphics.Point offsetForAlignment(org.eclipse.swt.graphics.Point parentSize,
                                                                org.eclipse.swt.graphics.Point childSize,
                                                                int alignment)

Calculate offset of a child region from a parent region necessary to align child region.

Parameters:

parentSize - Size of parent region.

childSize - Size of child region;

alignment - Alignment of child relative to parent.

offsetForAlignment

public static int offsetForAlignment(int parentLength,
                                     int childLength,
                                     int alignment)

Calculate offset from a parent length necessary to align a child length.

Parameters:

parentLength - Size of parent region.

childLength - Size of child region;

alignment - Alignment of child relative to parent. One of LEFT/TOP, CENTER or RIGHT/BOTTOM.

bumpRectangle

public static org.eclipse.swt.graphics.Point bumpRectangle(org.eclipse.swt.graphics.Rectangle windowRect)

Return a rectangle's position, adjusting so it does not go outside the screen.

Returns:

The new location.

bumpRectangle

public static void bumpRectangle(org.eclipse.swt.graphics.Rectangle parentRect,
                                 org.eclipse.swt.graphics.Rectangle childRect)

Ensure that childRect is in parentRect, and move it into it if not.

contains

public static boolean contains(org.eclipse.swt.graphics.Rectangle r1,
                               org.eclipse.swt.graphics.Rectangle r2)

Test if one rectangle fully contains another.

Returns:

True if r1 fully contains r2.