ch.sahits.game.graphic.layout
Class Slider

java.lang.Object
  ch.sahits.game.graphic.layout.AbstractSahitsComponent
      ch.sahits.game.graphic.layout.AbstractMultiselectableComponent<String>
          ch.sahits.game.graphic.layout.Slider

All Implemented Interfaces:

ISahitsComponent, IUpdatableComponent

public class Slider
extends AbstractMultiselectableComponent<String>
implements IUpdatableComponent

A slider component. The slider has either all labels painted or just the active

Author:

Andi Hotz, (c) Sahits GmbH, 2011 Created on Jun 12, 2011

Field Summary

private IIndexChangeListener	changeListener
private Polygon	handle
private FontMetrics	metric
private boolean	paintLabels

Fields inherited from class ch.sahits.game.graphic.layout.AbstractMultiselectableComponent

selectables

Fields inherited from class ch.sahits.game.graphic.layout.AbstractSahitsComponent

painter

Constructor Summary

Slider(FontMetrics fm)

Method Summary

void	addChangeListeners(IIndexChangeListener listener)
private int	angleToIndex(double angle) Compute the closest index from an angle
private float	castIntoRange(int index) compute the angle for an index
private float	castValue() Cast the selected index into a percentage
private float	castValue(double val) Cast the value into a persentage
Dimension	getPreferredSize() Retrieve the preferred size of the component.
void	paint(Graphics g) Draw the component with the appropriate graphic context.
private void	paintCurrentLabel(Graphics g, int value) Paint the label of the closest labeled value over the handle.
private void	paintHorizontalLabel(Graphics g, int value) Paint the label over the center of the tracker handle (commonly known as thumb)
private void	paintLabelAt(Graphics g, Label label, Rectangle rect) Paint a label a specific position
private boolean	paintLabels() Check if the labels are to be painted
private void	paintLabels(Graphics g) Print all the labels
void	setBounds(int x, int y, int width, int height) Define the measurements of the component
void	setPaintLabels(boolean paintLabels) Set the flag to paint the label
void	setSelected(int index) set the selected index to specified value.
void	testClick(MouseEvent e)
void	testClick(Point p) Test if there was a mouse click on the component
private double	valueForXPosition(int x)

Methods inherited from class ch.sahits.game.graphic.layout.AbstractMultiselectableComponent

add, decSelection, gameRender, gameUpdate, getFont, getItem, getItemCount, getSelected, getSelectedIndex, incSelection, setFont, testKeyPress

Methods inherited from class ch.sahits.game.graphic.layout.AbstractSahitsComponent

createVisualBounds, getBounds, getInsets, setInsets

Methods inherited from class java.lang.Object

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

Methods inherited from interface ch.sahits.game.graphic.display.IUpdatableComponent

gameRender, gameUpdate, testKeyPress

Field Detail

metric

private final FontMetrics metric

paintLabels

private boolean paintLabels

handle

private Polygon handle

changeListener

private IIndexChangeListener changeListener

Constructor Detail

Slider

public Slider(FontMetrics fm)

Method Detail

testClick

public void testClick(MouseEvent e)

testClick

public void testClick(Point p)

Description copied from interface: IUpdatableComponent

Test if there was a mouse click on the component

Specified by:

testClick in interface IUpdatableComponent

valueForXPosition

private double valueForXPosition(int x)

castValue

private float castValue()

Cast the selected index into a percentage

Returns:

castValue

private float castValue(double val)

Cast the value into a persentage

Parameters:

val -

Returns:

castIntoRange

private float castIntoRange(int index)

compute the angle for an index

Parameters:

index -

Returns:

angleToIndex

private int angleToIndex(double angle)

Compute the closest index from an angle

Parameters:

angle -

Returns:

paint

public void paint(Graphics g)

Description copied from interface: ISahitsComponent

Draw the component with the appropriate graphic context. Before calling this method make sure it is appropriately initialized.

Specified by:

paint in interface ISahitsComponent

getPreferredSize

public Dimension getPreferredSize()

Description copied from interface: ISahitsComponent

Retrieve the preferred size of the component.

Specified by:

getPreferredSize in interface ISahitsComponent

Returns:

paintLabels

private boolean paintLabels()

Check if the labels are to be painted

Returns:

setPaintLabels

public void setPaintLabels(boolean paintLabels)

Set the flag to paint the label

Parameters:

paintLabels -

paintCurrentLabel

private void paintCurrentLabel(Graphics g,
                               int value)

Paint the label of the closest labeled value over the handle. This makes only sense if the all potential labels are named (evenly spaced)

Parameters:

g -

value -

paintLabelAt

private void paintLabelAt(Graphics g,
                          Label label,
                          Rectangle rect)

Paint a label a specific position

Parameters:

g -

label -

rect -

paintHorizontalLabel

private void paintHorizontalLabel(Graphics g,
                                  int value)

Paint the label over the center of the tracker handle (commonly known as thumb)

paintLabels

private void paintLabels(Graphics g)

Print all the labels

Parameters:

g -

setSelected

public void setSelected(int index)

set the selected index to specified value. If the index is outside of range nothing will happen

Overrides:

setSelected in class AbstractMultiselectableComponent<String>

setBounds

public void setBounds(int x,
                      int y,
                      int width,
                      int height)

Description copied from interface: ISahitsComponent

Define the measurements of the component

Specified by:

setBounds in interface ISahitsComponent

Overrides:

setBounds in class AbstractSahitsComponent

Parameters:

x - position along the x axis

y - position along the y axis

width - of the component

height - of the component

addChangeListeners

public void addChangeListeners(IIndexChangeListener listener)