Dokumentation der VJBL1.2: Class AnalogMeter

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vipratech.beans.standardbeans
Class AnalogMeter

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Canvas
              |
              +--vipratech.beans.standardbeans.AnalogMeter

public class AnalogMeter
extends java.awt.Canvas
implements InterfaceProperties

The AnalogMeter.class is a GUI component used to dynamically display values using an analog type meter display.

The value of the meter is set using the setValue(float value) method or by wiring the meter up to adjustment event sources at design time. For example, the meter can be wired up to standard java.awt.Scrollbar components or to vipratech.beans.standardbeans.HorizontalSlider, or vipratech.beans.standardbeans.VerticalSlider.

The value of the meter may also be set using a property change event, using the property name "y1Value". For example, the meter may be wired up to vipratech.beans.standardbeans.SimpleDataSource at design time.

The AnalogMeter bean automatically resizes itself at design time to the correct width for a given height. This is required to maintian the correct relative width and height values to draw a semi-circular meter where the width is double the height.

The automatic resizing means that the meter should be sized at design time adjusting the height and allowing the width to be calculated by the bean.

Version:: 1.08, June 13, 2002
Author:: Warwick Bailey warwick-bailey@bigfoot.com
See Also:: MeterSupport, Serialized Form

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT,  
CENTER_ALIGNMENT,  
LEFT_ALIGNMENT,  
RIGHT_ALIGNMENT,  
TOP_ALIGNMENT

Constructor Summary
`AnalogMeter()` Constructor.

Method Summary
`void`	`adjustmentValueChanged(java.awt.event.AdjustmentEvent event)` Method for receiving adjustment events.
`boolean`	`getBevel()` Returns the toggle of 3D edge effect on the border.
`int`	`getBorder()` Returns the background color of the meter.
`float`	`getMaxValue()` Returns meter maximum value.
`java.awt.Color`	`getMeterColor()` Returns the background color of the meter.
`java.awt.Dimension`	`getMinimumSize()` Returns the minimum meter size.
`float`	`getMinValue()` Returns current meter minimum value.
`int`	`getPlaces()` Returns the number of decimal places.
`boolean`	`getPointer()` Returns the toggle of line/pointer display for the meter.
`java.lang.String`	`getUnitLabel()` Returns the unit label.
`boolean`	`getUnitVisible()` Returns the toggle of the unit visible state.
`float`	`getValue()` Returns current meter value.
`void`	`paint(java.awt.Graphics g)` Draws all meter components to the screen.
`void`	`propertyChange(java.beans.PropertyChangeEvent event)` Method to receive property change events.
`void`	`reset()` Resets the meter to the initial value.
`void`	`setBevel(boolean bevel)` Toggle 3D edge effect on the border.
`void`	`setBorder(int border)` Sets the border size of the meter.
`void`	`setMaxValue(float maxValue)` Sets the meter maximum value.
`void`	`setMeterColor(java.awt.Color meterColor)` Sets the background color of the meter.
`void`	`setMinValue(float minValue)` Sets the meter minimum value.
`void`	`setPlaces(int places)` Sets the number of decimal places.
`void`	`setPointer(boolean pointer)` Toggle line/pointer display for the meter.
`void`	`setUnitLabel(java.lang.String unitLabel)` Sets the unit label.
`void`	`setUnitVisible(boolean unitVisible)` Toggle unit visible.
`void`	`setValue(float value)` Sets the meter value.
`void`	`stop()` Freezes the meter at the current value.
`void`	`update(java.awt.Graphics g)` Overidden method to reduce flicker when using double buffering.

Methods inherited from class java.awt.Canvas

addNotify

Methods inherited from class java.awt.Component

action, 
add, 
addComponentListener, 
addFocusListener, 
addInputMethodListener, 
addKeyListener, 
addMouseListener, 
addMouseMotionListener, 
addPropertyChangeListener, 
addPropertyChangeListener, 
bounds, 
checkImage, 
checkImage, 
contains, 
contains, 
createImage, 
createImage, 
deliverEvent, 
disable, 
dispatchEvent, 
doLayout, 
enable, 
enable, 
enableInputMethods, 
getAlignmentX, 
getAlignmentY, 
getBackground, 
getBounds, 
getBounds, 
getColorModel, 
getComponentAt, 
getComponentAt, 
getComponentOrientation, 
getCursor, 
getDropTarget, 
getFont, 
getFontMetrics, 
getForeground, 
getGraphics, 
getHeight, 
getInputContext, 
getInputMethodRequests, 
getLocale, 
getLocation, 
getLocation, 
getLocationOnScreen, 
getMaximumSize, 
getName, 
getParent, 
getPeer, 
getPreferredSize, 
getSize, 
getSize, 
getToolkit, 
getTreeLock, 
getWidth, 
getX, 
getY, 
gotFocus, 
handleEvent, 
hasFocus, 
hide, 
imageUpdate, 
inside, 
invalidate, 
isDisplayable, 
isDoubleBuffered, 
isEnabled, 
isFocusTraversable, 
isLightweight, 
isOpaque, 
isShowing, 
isValid, 
isVisible, 
keyDown, 
keyUp, 
layout, 
list, 
list, 
list, 
list, 
list, 
locate, 
location, 
lostFocus, 
minimumSize, 
mouseDown, 
mouseDrag, 
mouseEnter, 
mouseExit, 
mouseMove, 
mouseUp, 
move, 
nextFocus, 
paintAll, 
postEvent, 
preferredSize, 
prepareImage, 
prepareImage, 
print, 
printAll, 
remove, 
removeComponentListener, 
removeFocusListener, 
removeInputMethodListener, 
removeKeyListener, 
removeMouseListener, 
removeMouseMotionListener, 
removeNotify, 
removePropertyChangeListener, 
removePropertyChangeListener, 
repaint, 
repaint, 
repaint, 
repaint, 
requestFocus, 
reshape, 
resize, 
resize, 
setBackground, 
setBounds, 
setBounds, 
setComponentOrientation, 
setCursor, 
setDropTarget, 
setEnabled, 
setFont, 
setForeground, 
setLocale, 
setLocation, 
setLocation, 
setName, 
setSize, 
setSize, 
setVisible, 
show, 
show, 
size, 
toString, 
transferFocus, 
validate

Methods inherited from class java.lang.Object

equals, 
getClass, 
hashCode, 
notify, 
notifyAll, 
wait, 
wait, 
wait

Constructor Detail

AnalogMeter

public AnalogMeter()

Constructor.

Method Detail

adjustmentValueChanged

public void adjustmentValueChanged(java.awt.event.AdjustmentEvent event)

Method for receiving adjustment events. This is the target method when wiring up the meter to sources of adjustment event object (such as scrollers and scroll bars) at design time.

paint

public final void paint(java.awt.Graphics g)

Draws all meter components to the screen.

Overrides:: paint in class java.awt.Canvas

update

public final void update(java.awt.Graphics g)

Overidden method to reduce flicker when using double buffering.

Overrides:: update in class java.awt.Component

propertyChange

public final void propertyChange(java.beans.PropertyChangeEvent event)

Method to receive property change events. This method should accept property change events of objects of type Float and type PointFloat

reset

public final void reset()

Resets the meter to the initial value.

stop

public void stop()

Freezes the meter at the current value.

getMinimumSize

public final java.awt.Dimension getMinimumSize()

Returns the minimum meter size.

Overrides:: getMinimumSize in class java.awt.Component

setValue

public final void setValue(float value)

Sets the meter value.

getValue

public final float getValue()

Returns current meter value.

setMaxValue

public final void setMaxValue(float maxValue)

Sets the meter maximum value.

getMaxValue

public final float getMaxValue()

Returns meter maximum value.

setMinValue

public final void setMinValue(float minValue)

Sets the meter minimum value.

getMinValue

public final float getMinValue()

Returns current meter minimum value.

setMeterColor

public final void setMeterColor(java.awt.Color meterColor)

Sets the background color of the meter.

getMeterColor

public final java.awt.Color getMeterColor()

Returns the background color of the meter.

setBorder

public final void setBorder(int border)

Sets the border size of the meter.

getBorder

public final int getBorder()

Returns the background color of the meter.

setPointer

public final void setPointer(boolean pointer)

Toggle line/pointer display for the meter.

getPointer

public boolean getPointer()

Returns the toggle of line/pointer display for the meter.

setBevel

public final void setBevel(boolean bevel)

Toggle 3D edge effect on the border.

getBevel

public boolean getBevel()

Returns the toggle of 3D edge effect on the border.

setUnitVisible

public final void setUnitVisible(boolean unitVisible)

Toggle unit visible.

getUnitVisible

public boolean getUnitVisible()

Returns the toggle of the unit visible state.

setUnitLabel

public final void setUnitLabel(java.lang.String unitLabel)

Sets the unit label.

getUnitLabel

public java.lang.String getUnitLabel()

Returns the unit label.

setPlaces

public final void setPlaces(int places)

Sets the number of decimal places.

getPlaces

public int getPlaces()

Returns the number of decimal places.