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## org.apache.fop.render.intermediate
Class BorderPainter

    java.lang.Object
      org.apache.fop.render.intermediate.BorderPainter

    public class BorderPainter

extends java.lang.Object

This is an abstract base class for handling border painting.

Field Summary
`protected static int` | `BOTTOM` Convention index of bottom border
`protected static int` | `BOTTOM_LEFT` Convention index of bottom-left border corners
`protected static int` | `BOTTOM_RIGHT` Convention index of bottom-right border corners
`protected static float` | `DASHED_BORDER_LENGTH_FACTOR` The length of the dash as a factor of the border width i.e.
`static float` | `DASHED_BORDER_SPACE_RATIO` The ratio between a solid dash and the white-space in a dashed-border
`protected static int` | `LEFT` Convention index of left border
`protected static int` | `RIGHT` Convention index of right border
`protected static int` | `TOP` Convention index of before top
`protected static int` | `TOP_LEFT` Convention index of top-left border corners
`protected static int` | `TOP_RIGHT` Convention index of top-right-end border corners

Constructor Summary
`BorderPainter(GraphicsPainter graphicsPainter)`

Method Summary
`protected static double` | `calculateCornerCorrectionFactor(int width, int height, BorderProps before, BorderProps after, BorderProps start, BorderProps end)` Calculate the correction factor to handle over-sized elliptic corner radii.
`protected static double` | `calculateCornerScaleCorrection(int width, int height, org.apache.fop.render.intermediate.BorderPainter.BorderSegment before, org.apache.fop.render.intermediate.BorderPainter.BorderSegment after, org.apache.fop.render.intermediate.BorderPainter.BorderSegment start, org.apache.fop.render.intermediate.BorderPainter.BorderSegment end)` Calculate the scaling factor to handle over-sized elliptic corner radii.
`void` | `clipBackground(java.awt.Rectangle rect, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd)` Clip the background to the inner border
`static float` | `dashWidthCalculator(float borderLength, float borderWidth)` This method calculates the length of the "dash" in a dashed border.
`void` | `drawBorders(java.awt.Rectangle borderRect, BorderProps bpsTop, BorderProps bpsBottom, BorderProps bpsLeft, BorderProps bpsRight, java.awt.Color innerBackgroundColor)` Draws borders.
`protected void` | `drawRectangularBorders(java.awt.Rectangle borderRect, BorderProps bpsTop, BorderProps bpsBottom, BorderProps bpsLeft, BorderProps bpsRight)` TODO merge with drawRoundedBorders()?
`protected void` | `drawRoundedBorders(java.awt.Rectangle borderRect, BorderProps beforeBorderProps, BorderProps afterBorderProps, BorderProps startBorderProps, BorderProps endBorderProps)` TODO merge with drawRectangularBorders?

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### TOP

    protected static final int TOP

  Convention index of before top

  See Also:
    Constant Field Values

### RIGHT

    protected static final int RIGHT

  Convention index of right border

  See Also:
    Constant Field Values

### BOTTOM

    protected static final int BOTTOM

  Convention index of bottom border

  See Also:
    Constant Field Values

### LEFT

    protected static final int LEFT

  Convention index of left border

  See Also:
    Constant Field Values

### TOP_LEFT

    protected static final int TOP_LEFT

  Convention index of top-left border corners

  See Also:
    Constant Field Values

### TOP_RIGHT

    protected static final int TOP_RIGHT

  Convention index of top-right-end border corners

  See Also:
    Constant Field Values

### BOTTOM_RIGHT

    protected static final int BOTTOM_RIGHT

  Convention index of bottom-right border corners

  See Also:
    Constant Field Values

### BOTTOM_LEFT

    protected static final int BOTTOM_LEFT

  Convention index of bottom-left border corners

  See Also:
    Constant Field Values

### DASHED_BORDER_SPACE_RATIO

    public static final float DASHED_BORDER_SPACE_RATIO

  The ratio between a solid dash and the white-space in a dashed-border

  See Also:
    Constant Field Values

### DASHED_BORDER_LENGTH_FACTOR

    protected static final float DASHED_BORDER_LENGTH_FACTOR

  The length of the dash as a factor of the border width i.e. 2 -> dashWidth = 2*borderWidth

  See Also:
    Constant Field Values

Constructor Detail

### BorderPainter

    public BorderPainter(GraphicsPainter graphicsPainter)

Method Detail

### drawBorders

    public void drawBorders(java.awt.Rectangle borderRect,
                            BorderProps bpsTop,
                            BorderProps bpsBottom,
                            BorderProps bpsLeft,
                            BorderProps bpsRight,
                            java.awt.Color innerBackgroundColor)
                     throws IFException

  Draws borders.

  Parameters:
    `borderRect` - the border rectangle
    `bpsTop` - the border specification on the top side
    `bpsBottom` - the border specification on the bottom side
    `bpsLeft` - the border specification on the left side
    `bpsRight` - the border specification on the end side
    `innerBackgroundColor` - the inner background color
  Throws:
    `IFException` - if an error occurs while drawing the borders

### drawRectangularBorders

    protected void drawRectangularBorders(java.awt.Rectangle borderRect,
                                          BorderProps bpsTop,
                                          BorderProps bpsBottom,
                                          BorderProps bpsLeft,
                                          BorderProps bpsRight)
                                   throws java.io.IOException

  TODO merge with drawRoundedBorders()?

  Parameters:
    `borderRect` - the border rectangle
    `bpsTop` - the border specification on the top side
    `bpsBottom` - the border specification on the bottom side
    `bpsLeft` - the border specification on the left side
    `bpsRight` - the border specification on the end side
  Throws:
    `java.io.IOException`

### dashWidthCalculator

    public static float dashWidthCalculator(float borderLength,
                                            float borderWidth)

  This method calculates the length of the "dash" in a dashed border. The dash satisfies the condition that corners start on a dash and end with a dash (rather than ending with a white space).

  Parameters:
    `borderLength` - The length of the border.
    `borderWidth` - The width/thickness of the border.
    `dashSpaceRatio` - The ratio between dashes and white-space.
  Returns:
    returns the length of the dash such that it fits the criteria above.

### drawRoundedBorders

    protected void drawRoundedBorders(java.awt.Rectangle borderRect,
                                      BorderProps beforeBorderProps,
                                      BorderProps afterBorderProps,
                                      BorderProps startBorderProps,
                                      BorderProps endBorderProps)
                               throws java.io.IOException

  TODO merge with drawRectangularBorders?

  Parameters:
    `borderRect` - the border rectangle
    `bpsBefore` - the border specification on the before side
    `bpsAfter` - the border specification on the after side
    `bpsStart` - the border specification on the start side
    `bpsEnd` - the border specification on the end side
  Throws:
    `java.io.IOException` - on io exception

### clipBackground

    public void clipBackground(java.awt.Rectangle rect,
                               BorderProps bpsBefore,
                               BorderProps bpsAfter,
                               BorderProps bpsStart,
                               BorderProps bpsEnd)
                        throws java.io.IOException

  Clip the background to the inner border

  Parameters:
    `rect` - clipping rectangle
    `bpsBefore` - before border
    `bpsAfter` - after border
    `bpsStart` - start border
    `bpsEnd` - end border
  Throws:
    `java.io.IOException` - if an I/O error occurs

### calculateCornerCorrectionFactor

    protected static double calculateCornerCorrectionFactor(int width,
                                                            int height,
                                                            BorderProps before,
                                                            BorderProps after,
                                                            BorderProps start,
                                                            BorderProps end)

  Calculate the correction factor to handle over-sized elliptic corner radii.

  Parameters:
    `width` - the border width
    `height` - the border height
    `before` - the before border properties
    `after` - the after border properties
    `start` - the start border properties
    `end` - the end border properties

### calculateCornerScaleCorrection

    protected static double calculateCornerScaleCorrection(int width,
                                                           int height,
                                                           org.apache.fop.render.intermediate.BorderPainter.BorderSegment before,
                                                           org.apache.fop.render.intermediate.BorderPainter.BorderSegment after,
                                                           org.apache.fop.render.intermediate.BorderPainter.BorderSegment start,
                                                           org.apache.fop.render.intermediate.BorderPainter.BorderSegment end)

  Calculate the scaling factor to handle over-sized elliptic corner radii.

  Parameters:
    `width` - the border width
    `height` - the border height
    `before` - the before border segment
    `after` - the after border segment
    `start` - the start border segment
    `end` - the end border segment

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