org.apache.fop.render.intermediate

Interface GraphicsPainter

All Known Implementing Classes:

PDFGraphicsPainter, PSGraphicsPainter

public interface GraphicsPainter

Used primarily by BorderPainter, implementations are created for rendering primitive graphical operations.

Method Summary

Methods

Modifier and Type	Method and Description
void	arcTo(double startAngle, double endAngle, int cx, int cy, int width, int height) Draws an arc on the ellipse centered at (cx, cy) with width width and height height from start angle startAngle (with respect to the x-axis counter-clockwise) to the end angle endAngle.
void	clip() Reduces the current clipping region to the current path.
void	closePath() Closes the current path.
void	drawBorderLine(int x1, int y1, int x2, int y2, boolean horz, boolean startOrBefore, int style, Color color) Draws a border line.
void	drawLine(Point start, Point end, int width, Color color, RuleStyle style) Draws a line/rule.
void	lineTo(int x, int y) Draws a line from the current cursor position to the given coordinates.
void	moveTo(int x, int y) Moves the cursor to the given coordinate.
void	restoreGraphicsState() Restore the last graphics state from the stack.
void	rotateCoordinates(double angle) Rotate the coordinate frame
void	saveGraphicsState() Save the graphics state on the stack.
void	scaleCoordinates(float xScale, float yScale) Scale the coordinate frame
void	translateCoordinates(int xTranslate, int yTranslate) Translate the coordinate frame

Method Detail

drawBorderLine

void drawBorderLine(int x1,
                  int y1,
                  int x2,
                  int y2,
                  boolean horz,
                  boolean startOrBefore,
                  int style,
                  Color color)
                    throws IOException

Draws a border line.

Parameters:

x1 - X coordinate of the upper left corner of the line's bounding rectangle (in millipoints)

y1 - start Y coordinate of the upper left corner of the line's bounding rectangle (in millipoints)

x2 - end X coordinate of the lower right corner of the line's bounding rectangle (in millipoints)

y2 - end y coordinate of the lower right corner of the line's bounding rectangle (in millipoints)

horz - true if it is a horizontal line

startOrBefore - true if the line is the start or end edge of a border box

style - the border style

color - the border color

Throws:

IOException - if an I/O error occurs

drawLine

void drawLine(Point start,
            Point end,
            int width,
            Color color,
            RuleStyle style)
              throws IOException

Draws a line/rule.

Parameters:

start - start point (coordinates in millipoints)

end - end point (coordinates in millipoints)

width - width of the line

color - the line color

style - the rule style

Throws:

IOException - if an I/O error occurs

moveTo

void moveTo(int x,
          int y)
            throws IOException

Moves the cursor to the given coordinate.

Parameters:

x - the X coordinate (in millipoints)

y - the Y coordinate (in millipoints)

Throws:

IOException - if an I/O error occurs

lineTo

void lineTo(int x,
          int y)
            throws IOException

Draws a line from the current cursor position to the given coordinates.

Parameters:

x - the X coordinate (in millipoints)

y - the Y coordinate (in millipoints)

Throws:

IOException - if an I/O error occurs

arcTo

void arcTo(double startAngle,
         double endAngle,
         int cx,
         int cy,
         int width,
         int height)
           throws IOException

Draws an arc on the ellipse centered at (cx, cy) with width width and height height from start angle startAngle (with respect to the x-axis counter-clockwise) to the end angle endAngle. The ellipses major axis are assumed to coincide with the coordinate axis. The current position MUST coincide with the starting position on the ellipse.

Parameters:

startAngle - the start angle

endAngle - the end angle

cx - the x coordinate of the ellipse center

cy - the y coordinate of the ellipse center

width - the extent of the ellipse in the x direction

height - the extent of the ellipse in the y direction

Throws:

IOException - if an I/O error occurs

rotateCoordinates

void rotateCoordinates(double angle)
                       throws IOException

Rotate the coordinate frame

Parameters:

angle - angle in radians to rotate the coordinate frame

Throws:

IOException - if an I/O error occurs

translateCoordinates

void translateCoordinates(int xTranslate,
                        int yTranslate)
                          throws IOException

Translate the coordinate frame

Parameters:

xTranslate - translation in the x direction

yTranslate - translation in the y direction

Throws:

IOException - if an I/O error occurs

scaleCoordinates

void scaleCoordinates(float xScale,
                    float yScale)
                      throws IOException

Scale the coordinate frame

Parameters:

xScale - scale factor in the x direction

yScale - scale factor in the y direction

Throws:

IOException - if an I/O error occurs

closePath

void closePath()
               throws IOException

Closes the current path.

Throws:

IOException - if an I/O error occurs

clip

void clip()
          throws IOException

Reduces the current clipping region to the current path.

Throws:

IOException - if an I/O error occurs

saveGraphicsState

void saveGraphicsState()
                       throws IOException

Save the graphics state on the stack.

Throws:

IOException - if an I/O error occurs

restoreGraphicsState

void restoreGraphicsState()
                          throws IOException

Restore the last graphics state from the stack.

Throws:

IOException - if an I/O error occurs