com.jgoodies.common.internal

## Class RenderingUtils

- java.lang.Object
- - com.jgoodies.common.internal.RenderingUtils

-     public final class RenderingUtils
      extends Object

  Provides convenience behavior for drawing strings, underline chars, and accessing font metrics.

  Note: This class is not part of the public JGoodies Common API. It should be treated as library internal and should not be used by API users. It may be removed or changed without further notice.

  Author:
    Karsten Lentzsch

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `drawString(JComponent c, Graphics g, String text, int x, int y)` Draws the string at the specified location underlining the specified character.
    `static void` | `drawStringUnderlineCharAt(JComponent c, Graphics g, String text, int underlinedIndex, int x, int y)` Draws the string at the specified location underlining the specified character.
    `static FontMetrics` | `getFontMetrics(JComponent c, Graphics g)` Returns the FontMetrics for the current Font of the passed in Graphics.

    - ### Methods inherited from class java.lang.Object

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

- - ### Method Detail

    - #### drawString

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

      Draws the string at the specified location underlining the specified character.
      Parameters:
        `c` - JComponent that will display the string, may be null
        `g` - Graphics to draw the text to
        `text` - String to display
        `x` - X coordinate to draw the text at
        `y` - Y coordinate to draw the text at

    - #### drawStringUnderlineCharAt

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

      Draws the string at the specified location underlining the specified character.
      Parameters:
        `c` - JComponent that will display the string, may be null
        `g` - Graphics to draw the text to
        `text` - String to display
        `underlinedIndex` - Index of a character in the string to underline
        `x` - X coordinate to draw the text at
        `y` - Y coordinate to draw the text at

    - #### getFontMetrics

          public static FontMetrics getFontMetrics(JComponent c,
                                   Graphics g)

      Returns the FontMetrics for the current Font of the passed in Graphics. This method is used when a Graphics is available, typically when painting. If a Graphics is not available the JComponent method of the same name should be used.

      Callers should pass in a non-null JComponent, the exception to this is if a JComponent is not readily available at the time of painting.

      This does not necessarily return the FontMetrics from the Graphics.

      Parameters:
        `c` - JComponent requesting FontMetrics, may be null
        `g` - Graphics Graphics
      Returns:
        the FontMetrics

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