Module java.desktop

Package javax.swing.plaf.basic

Class BasicGraphicsUtils

java.lang.Object

javax.swing.plaf.basic.BasicGraphicsUtils

public class BasicGraphicsUtils
extends Object

Convenient util class.

Constructor Summary

Constructors

Constructor	Description
BasicGraphicsUtils()	Constructs a BasicGraphicsUtils.

Method Summary

Modifier and Type	Method	Description
static void	drawBezel(Graphics g, int x, int y, int w, int h, boolean isPressed, boolean isDefault, Color shadow, Color darkShadow, Color highlight, Color lightHighlight)	Draws a bezel.
static void	drawDashedRect(Graphics g, int x, int y, int width, int height)	Draws dashed rectangle.
static void	drawEtchedRect(Graphics g, int x, int y, int w, int h, Color shadow, Color darkShadow, Color highlight, Color lightHighlight)	Draws an etched rectangle.
static void	drawGroove(Graphics g, int x, int y, int w, int h, Color shadow, Color highlight)	Draws a groove.
static void	drawLoweredBezel(Graphics g, int x, int y, int w, int h, Color shadow, Color darkShadow, Color highlight, Color lightHighlight)	Draws a lowered bezel.
static void	drawString(Graphics g, String text, int underlinedChar, int x, int y)	Draw a string with the graphics g at location (x,y) just like g.drawString would.
static void	drawString(JComponent c, Graphics2D g, String string, float x, float y)	Draws the given string at the specified location using text properties and anti-aliasing hints from the provided component.
static void	drawStringUnderlineCharAt(Graphics g, String text, int underlinedIndex, int x, int y)	Draw a string with the graphics g at location (x, y) just like g.drawString would.
static void	drawStringUnderlineCharAt(JComponent c, Graphics2D g, String string, int underlinedIndex, float x, float y)	Draws the given string at the specified location underlining the specified character.
static String	getClippedString(JComponent c, FontMetrics fm, String string, int availTextWidth)	Clips the passed in string to the space provided.
static Insets	getEtchedInsets()	Returns the amount of space taken up by a border drawn by drawEtchedRect()
static Insets	getGrooveInsets()	Returns the amount of space taken up by a border drawn by drawGroove()
static Dimension	getPreferredButtonSize(AbstractButton b, int textIconGap)	Returns the preferred size of the button.
static float	getStringWidth(JComponent c, FontMetrics fm, String string)	Returns the width of the passed in string using text properties and anti-aliasing hints from the provided component.

Methods declared in class java.lang.Object

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

Constructor Details

BasicGraphicsUtils

public BasicGraphicsUtils()

Constructs a BasicGraphicsUtils.

Method Details

drawEtchedRect

public static void drawEtchedRect(Graphics g,
 int x,
 int y,
 int w,
 int h,
 Color shadow,
 Color darkShadow,
 Color highlight,
 Color lightHighlight)

Draws an etched rectangle.

Parameters:

g - an instance of Graphics

x - an X coordinate

y - an Y coordinate

w - a width

h - a height

shadow - a color of shadow

darkShadow - a color of dark shadow

highlight - a color highlighting

lightHighlight - a color of light highlighting

getEtchedInsets

public static Insets getEtchedInsets()

Returns the amount of space taken up by a border drawn by drawEtchedRect()

Returns:

the inset of an etched rect

drawGroove

public static void drawGroove(Graphics g,
 int x,
 int y,
 int w,
 int h,
 Color shadow,
 Color highlight)

Draws a groove.

Parameters:

g - an instance of Graphics

x - an X coordinate

y - an Y coordinate

w - a width

h - a height

shadow - a color of shadow

highlight - a color highlighting

getGrooveInsets

public static Insets getGrooveInsets()

Returns the amount of space taken up by a border drawn by drawGroove()

Returns:

the inset of a groove border

drawBezel

public static void drawBezel(Graphics g,
 int x,
 int y,
 int w,
 int h,
 boolean isPressed,
 boolean isDefault,
 Color shadow,
 Color darkShadow,
 Color highlight,
 Color lightHighlight)

Draws a bezel.

Parameters:

g - an instance of Graphics

x - an X coordinate

y - an Y coordinate

w - a width

h - a height

isPressed - is component pressed

isDefault - is default drawing

shadow - a color of shadow

darkShadow - a color of dark shadow

highlight - a color highlighting

lightHighlight - a color of light highlighting

drawLoweredBezel

public static void drawLoweredBezel(Graphics g,
 int x,
 int y,
 int w,
 int h,
 Color shadow,
 Color darkShadow,
 Color highlight,
 Color lightHighlight)

Draws a lowered bezel.

Parameters:

g - an instance of Graphics

x - an X coordinate

y - an Y coordinate

w - a width

h - a height

shadow - a color of shadow

darkShadow - a color of dark shadow

highlight - a color highlighting

lightHighlight - a color of light highlighting

drawString

public static void drawString(Graphics g,
 String text,
 int underlinedChar,
 int x,
 int y)

Draw a string with the graphics g at location (x,y) just like g.drawString would. The first occurrence of underlineChar in text will be underlined. The matching algorithm is not case sensitive.

Parameters:

g - an instance of Graphics

text - a text

underlinedChar - an underlined char

x - an X coordinate

y - an Y coordinate

drawStringUnderlineCharAt

public static void drawStringUnderlineCharAt(Graphics g,
 String text,
 int underlinedIndex,
 int x,
 int y)

Draw a string with the graphics g at location (x, y) just like g.drawString would. The character at index underlinedIndex in text will be underlined. If index is beyond the bounds of text (including < 0), nothing will be underlined.

Parameters:

g - Graphics to draw with

text - String to draw

underlinedIndex - Index of character in text to underline

x - x coordinate to draw at

y - y coordinate to draw at

Since:

1.4

drawDashedRect

public static void drawDashedRect(Graphics g,
 int x,
 int y,
 int width,
 int height)

Draws dashed rectangle.

Parameters:

g - an instance of Graphics

x - an X coordinate

y - an Y coordinate

width - a width of rectangle

height - a height of rectangle

getPreferredButtonSize

public static Dimension getPreferredButtonSize(AbstractButton b,
 int textIconGap)

Returns the preferred size of the button.

Parameters:

b - an instance of AbstractButton

textIconGap - a gap between text and icon

Returns:

the preferred size of the button

drawString

public static void drawString(JComponent c,
 Graphics2D g,
 String string,
 float x,
 float y)

Draws the given string at the specified location using text properties and anti-aliasing hints from the provided component. Nothing is drawn for the null string.

Parameters:

c - the component that will display the string, may be null

g - the graphics context, must not be null

string - the string to display, may be null

x - the x coordinate to draw the text at

y - the y coordinate to draw the text at

Throws:

NullPointerException - if the specified g is null

Since:

9

drawStringUnderlineCharAt

public static void drawStringUnderlineCharAt(JComponent c,
 Graphics2D g,
 String string,
 int underlinedIndex,
 float x,
 float y)

Draws the given string at the specified location underlining the specified character. The provided component is used to query text properties and anti-aliasing hints.

The underlinedIndex parameter points to a char value (Unicode code unit) in the given string. If the char value specified at the underlined index is in the high-surrogate range and the char value at the following index is in the low-surrogate range then the supplementary character corresponding to this surrogate pair is underlined.

No character is underlined if the index is negative or greater than the string length (index < 0 || index >= string.length()) or if the char value specified at the given index is in the low-surrogate range.

Parameters:

c - the component that will display the string, may be null

g - the graphics context, must not be null

string - the string to display, may be null

underlinedIndex - index of a char value (Unicode code unit) in the string to underline

x - the x coordinate to draw the text at

y - the y coordinate to draw the text at

Throws:

NullPointerException - if the specified g is null

Since:

9

See Also:

• getStringWidth(javax.swing.JComponent, java.awt.FontMetrics, java.lang.String)

getClippedString

public static String getClippedString(JComponent c,
 FontMetrics fm,
 String string,
 int availTextWidth)

Clips the passed in string to the space provided. The provided component is used to query text properties and anti-aliasing hints. The unchanged string is returned if the space provided is greater than the string width.

Parameters:

c - the component, may be null

fm - the FontMetrics used to measure the string width, must be obtained from the correct font and graphics. Must not be null.

string - the string to clip, may be null

availTextWidth - the amount of space that the string can be drawn in

Returns:

the clipped string that fits in the provided space, an empty string if the given string argument is null or empty

Throws:

NullPointerException - if the specified fm is null

Since:

9

See Also:

• getStringWidth(javax.swing.JComponent, java.awt.FontMetrics, java.lang.String)

getStringWidth

public static float getStringWidth(JComponent c,
 FontMetrics fm,
 String string)

Returns the width of the passed in string using text properties and anti-aliasing hints from the provided component. If the passed string is null, returns zero.

Parameters:

c - the component, may be null

fm - the FontMetrics used to measure the advance string width, must be obtained from the correct font and graphics. Must not be null.

string - the string to get the advance width of, may be null

Returns:

the advance width of the specified string, zero is returned for null string

Throws:

NullPointerException - if the specified fm is null

Since:

9