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Label3D.java
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package symantec.itools.awt;
import java.awt.Component;
import java.awt.Canvas;
import java.awt.Dimension;
import java.awt.Color;
import java.awt.FontMetrics;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.Graphics;
import java.beans.PropertyVetoException;
import java.beans.PropertyChangeListener;
import java.beans.VetoableChangeListener;
import java.beans.PropertyChangeEvent;
import symantec.itools.awt.util.ColorUtils;
import symantec.itools.beans.VetoableChangeSupport;
import symantec.itools.beans.PropertyChangeSupport;
// 01/29/97 TWB Integrated changes from Windows
// 01/29/97 TWB Integrated changes from Macintosh
// 05/11/97 CAR Added getBorderedColor
// 06/01/97 RKM Updated to support Java 1.1
// Changed invalidate to repaint
// 07/29/97 CAR marked fields transient as needed
// 08/05/97 LAB Updated version number to 1.1. Now uses ColorUtils.calculateHilightColor
// and ColorUtils.calculateShadowColor to calculate the bevel colors more
// intelligently. Deprecated preferredSize and minimumSize in favor of
// getPreferredSize and getMinimumSize. Made lightweight. Moved color
// determination code into paint(). Removed color1 and color2 data members.
// Made some protected data private and some private data protected.
// Addressed Mac Bug #2771.
// 08/12/97 LAB Removed overriden reshape. Made paint set the font of the graphics
// to the container's font. This addresses Mac Bug #7237.
// 08/15/97 LAB Reworked the way colors were calculated to avoid NullPointerExceptions,
// and potential redraw problems. Now colors are recalculated in paint,
// if needed.
/**
* Creates a text string in a rectangle that has a three-dimensional visual
* effect. It is usually attached to an option, box, or button.
* <p>
* An application or applet can change the label text string, but a user
* cannot edit it.
* <p>
* Note: For most components, labels are usually created by specifying text
* for the Label property of that component.
* <p>
* @version 1.1, August 5, 1997
* @author Symantec
*/
public class Label3D extends Component implements AlignStyle, BevelStyle
{
/**
* Constant indicating a drawing margin of 0 pixels around the outside of
* the border.
*/
public static final int INDENT_ZERO = 0;
/**
* Constant indicating a drawing margin of 1 pixel around the outside of
* the border.
*/
public static final int INDENT_ONE = 1;
/**
* Constant indicating a drawing margin of 2 pixels around the outside of
* the border.
*/
public static final int INDENT_TWO = 2;
//
// Constructors
//
/**
* Constructs an empty Label3D with black text that is center aligned
* and a raised border with zero border indent.
*/
public Label3D()
{
this("", ALIGN_CENTERED, BEVEL_RAISED, Color.black, INDENT_ZERO);
}
/**
* Constructs a Label3D with black text, zero border indent, and the
* specified text alignment and bevel styles.
* @param sText the label text
* @param alignStyle the text alignment style: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT
* @param bevelStyle the bevel style: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
*/
public Label3D(String sText, int alignStyle, int bevelStyle)
{
this(sText, alignStyle, bevelStyle, Color.black, INDENT_ZERO);
}
/**
* Constructs a Label3D with a zero border indent and the specified attributes.
* @param sText the label text
* @param alignStyle the text alignment style: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT
* @param bevelStyle the bevel style: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE
* @param color the text color
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
*/
public Label3D(String sText, int alignStyle, int bevelStyle, Color color)
{
this(sText, alignStyle, bevelStyle, color, INDENT_ZERO);
}
/**
* Constructs a Label3D with black text and the specified attributes.
* @param sText the label text
* @param alignStyle the text alignment style: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT
* @param bevelStyle the bevel style: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE
* @param indent the amount to indent the border: INDENT_ZERO,
* INDENT_ONE, or INDENT_TWO
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
* @see #INDENT_ZERO
* @see #INDENT_ONE
* @see #INDENT_TWO
*/
public Label3D(String sText, int alignStyle, int bevelStyle, int indent)
{
this(sText, alignStyle, bevelStyle, Color.black, indent);
}
/**
* Constructs a Label3D with the specified attributes.
* @param sText the label text
* @param alignStyle the text alignment style: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT
* @param bevelStyle the bevel style: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE
* @param color the text color
* @param indent the amount to indent the border: INDENT_ZERO,
* INDENT_ONE, or INDENT_TWO
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
* @see #INDENT_ZERO
* @see #INDENT_ONE
* @see #INDENT_TWO
*/
public Label3D(String sText, int alignStyle, int bevelStyle, Color color, int indent)
{
String sOs = System.getProperty("os.name");
if (sOs.startsWith("S") || // SunOS, Solaris
sOs.startsWith("OSF") ) // OSF
{
bOsFlag = true;
setFont(new Font("Dialog", Font.PLAIN, 10));
}
else
{
bOsFlag = false;
}
sLabel3D = sText;
textColor = color;
borderedColor = Color.black;
cachedBackground = getBackground();
try
{
setBorderIndent(indent);
setAlignStyle(alignStyle);
setBevelStyle(bevelStyle);
}
catch(PropertyVetoException veto) {};
}
//
// Properties
//
/**
* Sets the text alignment style.
* @param style the text alignment style: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT
* @see #getAlignStyle
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
* @exception PropertyVetoException
* if the specified property value is unacceptable
*/
public void setAlignStyle(int newAlignStyle) throws PropertyVetoException
{
if (alignStyle != newAlignStyle)
{
Integer oldAlignStyleInt = new Integer(alignStyle);
Integer newAlignStyleInt = new Integer(newAlignStyle);
vetos.fireVetoableChange("AlignStyle",oldAlignStyleInt,newAlignStyleInt);
alignStyle = newAlignStyle;
repaint();
changes.firePropertyChange("AlignStyle",oldAlignStyleInt,newAlignStyleInt);
}
}
/**
* Gets the current alignment style.
* @return the text alignment style: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT
* @see #setAlignStyle
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
*/
public int getAlignStyle()
{
return alignStyle;
}
/**
* Sets the border style.
* @param style the border bevel style: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE
* @see #getBevelStyle
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
* @exception PropertyVetoException
* if the specified property value is unacceptable
*/
public void setBevelStyle(int newBevelStyle) throws PropertyVetoException
{
if (bevelStyle != newBevelStyle)
{
Integer oldValue = new Integer(bevelStyle);
Integer newValue = new Integer(newBevelStyle);
vetos.fireVetoableChange("BevelStyle", oldValue, newValue);
bevelStyle = newBevelStyle;
repaint();
changes.firePropertyChange("BevelStyle", oldValue, newValue);
}
}
/**
* Gets the current border style.
* @return the border bevel style: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE
* @see #setBevelStyle
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
*/
public int getBevelStyle()
{
return bevelStyle;
}
/**
* Sets the border indent amount.
* @param newBorderIndent the amount to indent around the border: INDENT_ZERO,
* INDENT_ONE, or INDENT_TWO
* @see #getBorderIndent
* @see #INDENT_ZERO
* @see #INDENT_ONE
* @see #INDENT_TWO
* @exception PropertyVetoException
* if the specified property value is unacceptable
*/
public void setBorderIndent(int newBorderIndent) throws PropertyVetoException
{
//Constrain newBorderIndent
if (newBorderIndent < INDENT_ZERO)
newBorderIndent = INDENT_ZERO;
else if (newBorderIndent > INDENT_TWO)
newBorderIndent = INDENT_TWO;
if (indent != newBorderIndent)
{
Integer oldBorderIndentInt = new Integer(indent);
Integer newBorderIndentInt = new Integer(newBorderIndent);
vetos.fireVetoableChange("BorderIndent",oldBorderIndentInt,newBorderIndentInt);
indent = newBorderIndent;
repaint();
changes.firePropertyChange("BorderIndent",oldBorderIndentInt,newBorderIndentInt);
}
}
/**
* Gets the current border indent amount.
* @return the amount the border is currently indented: INDENT_ZERO,
* INDENT_ONE, or INDENT_TWO
* @see #setBorderIndent
* @see #INDENT_ZERO
* @see #INDENT_ONE
* @see #INDENT_TWO
*/
public int getBorderIndent()
{
return indent;
}
/**
* Sets the border color.
* @param newBorderColor the color to use for the border
* @exception PropertyVetoException
* if the specified property value is unacceptable
*/
public void setBorderedColor(Color newBorderColor) throws PropertyVetoException
{
if (!symantec.itools.util.GeneralUtils.objectsEqual(borderedColor,newBorderColor))
{
Color oldBorderColor = borderedColor;
vetos.fireVetoableChange("BorderedColor",oldBorderColor,newBorderColor);
borderedColor = newBorderColor;
repaint();
changes.firePropertyChange("BorderedColor",oldBorderColor,newBorderColor);
}
}
/**
* Gets the border color.
* @return the border color
* @see #setBorderedColor
*/
public Color getBorderedColor()
{
return borderedColor;
}
/**
* Sets the label text.
* @param newText the new label text
* @see #getText
* @exception PropertyVetoException
* if the specified property value is unacceptable
*/
public void setText(String newText) throws PropertyVetoException
{
if (!symantec.itools.util.GeneralUtils.objectsEqual(sLabel3D,newText))
{
String oldText = sLabel3D;
vetos.fireVetoableChange("Text",oldText,newText);
sLabel3D = newText;
repaint();
changes.firePropertyChange("Text",oldText,newText);
}
}
/**
* Gets the current label text.
* @return the current label text
* @see #setText
*/
public String getText()
{
return sLabel3D;
}
/**
* Sets the label text color.
* @param newTextColor the new color for the label text
* @see #getTextColor
* @exception PropertyVetoException
* if the specified property value is unacceptable
*/
public void setTextColor(Color newTextColor) throws PropertyVetoException
{
if (!symantec.itools.util.GeneralUtils.objectsEqual(textColor,newTextColor))
{
Color oldValue = textColor;
vetos.fireVetoableChange("TextColor", oldValue, newTextColor);
textColor = newTextColor;
repaint();
changes.firePropertyChange("TextColor", oldValue, newTextColor);
}
}
/**
* Gets the current label text color.
* @return the current color of the label text
* @see #setTextColor
*/
public Color getTextColor()
{
return textColor;
}
/**
* Paints this component using the given graphics context.
* This is a standard Java AWT method which typically gets called
* by the AWT to handle painting this component. It paints this component
* using the given graphics context. The graphics context clipping region
* is set to the bounding rectangle of this component and its [0,0]
* coordinate is this component's top-left corner.
*
* @param g the graphics context used for painting
* @see java.awt.Component#repaint
* @see java.awt.Component#update
*/
public void paint(Graphics g)
{
Rectangle r;
Color c, color1, color2;
Color curBackground = getBackground();
if (!symantec.itools.util.GeneralUtils.objectsEqual(curBackground, cachedBackground))
{
cachedBackground = curBackground;
calculateHilightColors(curBackground);
}
r = bounds();
c = g.getColor();
g.setFont(getFont());
switch (bevelStyle)
{
case BEVEL_LOWERED :
{
color1 = shadowColor;
color2 = hilightColor;
break;
}
case BEVEL_RAISED :
{
color1 = hilightColor;
color2 = shadowColor;
break;
}
case BEVEL_LINE :
{
color1 = borderedColor;
color2 = borderedColor;
break;
}
default: // catches any bogus type, paint(...) relies on color1 being null
{
color1 = color2 = null;
break;
}
}
g.setColor(getBackground());
g.fillRect(0, 0, r.width - 1, r.height - 1);
if (color1 != null)
{
// top
g.setColor(color1);
g.drawLine(1+indent, indent, r.width-3-indent, indent);
// bottom
g.setColor(color2);
g.drawLine(1+indent, r.height-1-indent, r.width-3-indent, r.height-1-indent);
// left
g.setColor(color1);
g.drawLine(indent, indent, indent, r.height-1-indent);
// right
g.setColor(color2);
g.drawLine(r.width-2-indent, indent, r.width-2-indent, r.height-1-indent);
g.clipRect(2 + indent, 1+indent, r.width-9-indent, r.height-4-indent);
yTemp = 1 + indent;
}
else
{
g.drawRect(indent, indent, r.width-2-indent, r.height-1-indent);
g.clipRect(2, 1, r.width-7, r.height-2);
yTemp = 1;
}
// text
g.setColor(textColor);
fm = getFontMetrics(g.getFont());
yTemp = (r.height - yTemp + fm.getAscent()) / 2;
switch (alignStyle)
{
case ALIGN_LEFT:
{
if (bevelStyle == BEVEL_LINE)
{
g.drawString(sLabel3D, 4, yTemp);
}
else
{
g.drawString(sLabel3D, 8, yTemp);
}
break;
}
case ALIGN_RIGHT:
{
xTemp = r.width - fm.stringWidth(sLabel3D);
if (bevelStyle == BEVEL_LINE)
{
g.drawString(sLabel3D, xTemp - 6, yTemp);
}
else
{
g.drawString(sLabel3D, xTemp - 10, yTemp);
}
break;
}
case ALIGN_CENTERED:
{
xTemp = (r.width - fm.stringWidth(sLabel3D)) / 2;
g.drawString(sLabel3D, xTemp, yTemp);
break;
}
}
// reset color
g.setColor(c);
}
/**
* Returns the recommended dimensions to properly display this component.
* This is a standard Java AWT method which gets called to determine
* the recommended size of this component.
*
* For each axis, the preferred size is the maximum of the current size
* and the minimum size needed to display the entire label text.
*
* @see #getMinimumSize
*/
public Dimension getPreferredSize()
{
Dimension s = size();
Dimension m = minimumSize();
return new Dimension(Math.max(s.width, m.width), Math.max(s.height, m.height));
}
/**
* @deprecated
* @see #getPreferredSize
*/
public Dimension preferredSize()
{
return getPreferredSize();
}
/**
* Returns the minimum dimensions to properly display this component.
* This is a standard Java AWT method which gets called to determine
* the minimum size of this component.
*
* The minimum size is that size needed to display the entire label text.
*
* @see #getPreferredSize
*/
public Dimension getMinimumSize()
{
Dimension min;
Font f;
min = new Dimension(18, 10);
f = getFont();
if (f == null)
{
if (bOsFlag)
{
min.height = 29;
}
}
else
{
fm = getFontMetrics(f);
min.width = fm.stringWidth(sLabel3D) + 18;
min.height = fm.getHeight() + 10;
if (bOsFlag && min.height < 29)
{
min.height = 29;
}
}
return min;
}
/**
* @deprecated
* @see #getMinimumSize
*/
public Dimension minimumSize()
{
return getMinimumSize();
}
/**
* Adds a listener for all event changes.
* @param listener the listener to add.
* @see #removePropertyChangeListener
*/
public synchronized void addPropertyChangeListener(PropertyChangeListener listener)
{
//super.addPropertyChangeListener(listener);
changes.addPropertyChangeListener(listener);
}
/**
* Removes a listener for all event changes.
* @param listener the listener to remove.
* @see #addPropertyChangeListener
*/
public synchronized void removePropertyChangeListener(PropertyChangeListener listener)
{
//super.removePropertyChangeListener(listener);
changes.removePropertyChangeListener(listener);
}
/**
* Adds a vetoable listener for all event changes.
* @param listener the listener to add.
* @see #removeVetoableChangeListener
*/
public synchronized void addVetoableChangeListener(VetoableChangeListener listener)
{
//super.addVetoableChangeListener(listener);
vetos.addVetoableChangeListener(listener);
}
/**
* Removes a vetoable listener for all event changes.
* @param listener the listener to remove.
* @see #addVetoableChangeListener
*/
public synchronized void removeVetoableChangeListener(VetoableChangeListener listener)
{
//super.removeVetoableChangeListener(listener);
vetos.removeVetoableChangeListener(listener);
}
/**
* Used to calculate the hilight colors from the background color.
* @see #paint
*/
protected void calculateHilightColors(Color c)
{
hilightColor = ColorUtils.calculateHilightColor(c);
shadowColor = ColorUtils.calculateShadowColor(c);
}
//Protected members
/**
* The label text.
*/
protected String sLabel3D;
/**
* The current text alignment style.
* The value is one of: ALIGN_LEFT, ALIGN_CENTERED, or ALIGN_RIGHT.
* @see #getAlignStyle
* @see #setAlignStyle
* @see AlignStyle#ALIGN_LEFT
* @see AlignStyle#ALIGN_CENTERED
* @see AlignStyle#ALIGN_RIGHT
*/
protected int alignStyle;
/**
* The current border bevel style.
* The value is one of: BEVEL_RAISED, BEVEL_LOWERED, BEVEL_LINE, or BEVEL_NONE.
* @see #getBevelStyle
* @see #setBevelStyle
* @see BevelStyle#BEVEL_RAISED
* @see BevelStyle#BEVEL_LOWERED
* @see BevelStyle#BEVEL_LINE
* @see BevelStyle#BEVEL_NONE
*/
protected int bevelStyle;
/**
* The amount to indent around the border: INDENT_ZERO,
* INDENT_ONE, or INDENT_TWO.
* @see #getBorderIndent
* @see #setBorderIndent
* @see #INDENT_ZERO
* @see #INDENT_ONE
* @see #INDENT_TWO
*/
protected int indent = INDENT_ZERO;
/**
* The label text color.
* @see #getTextColor
* @see #setTextColor
*/
protected Color textColor;
/**
* The border color.
* @see #getBorderedColor
* @see #setBorderedColor
*/
protected Color borderedColor;
/**
* The color of border bevel hilights.
* This color is automatically determined.
*/
protected Color hilightColor;
/**
* The color of border bevel shawdows.
* This color is automatically determined.
*/
protected Color shadowColor;
/**
* Cached value of the background color. Used to determine if calculated colors need to be updated.
*/
protected Color cachedBackground = null;
private VetoableChangeSupport vetos = new VetoableChangeSupport(this);
private PropertyChangeSupport changes = new PropertyChangeSupport(this);
transient private FontMetrics fm;
transient private int xTemp;
transient private int yTemp;
transient private boolean bOsFlag = false;
}