Package net.sf.jasperreports.engine.export

Class JRGridLayout

java.lang.Object

net.sf.jasperreports.engine.export.JRGridLayout

public class JRGridLayout
extends Object

Utility class used by grid exporters to create a grid for page layout.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	JRGridLayout.BoxKey

Constructor Summary

Constructors

Modifier	Constructor	Description
	JRGridLayout(ExporterNature nature, List<JRPrintElement> elements, int width, int height, int offsetX, int offsetY)	Constructor.
	JRGridLayout(ExporterNature nature, List<JRPrintElement> elements, int width, int height, int offsetX, int offsetY, CutsInfo xCuts)	Constructor.
protected	JRGridLayout(JRGridLayout parent, List<JRPrintElement> elements, int width, int height, int offsetX, int offsetY, PrintElementIndex parentElementIndex)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected static void	addXCuts(ExporterNature nature, List<JRPrintElement> elementsList, int elementOffsetX, CutsInfo xCuts)	This static method calculates the X cuts for a list of print elements and stores them in the list indicated by the xCuts parameter.
static CutsInfo	calculateXCuts(ExporterNature nature, JasperPrint jasperPrint, int startPageIndex, int endPageIndex, int offsetX)	This static method calculates all the X cuts for a list of pages.
protected GridCellSize	cellSize(int width, int height, int colSpan, int rowSpan)
protected GridCellStyle	cellStyle(Color backcolor, Color forecolor, JRLineBox box)
protected JRExporterGridCell	changeStyle(JRExporterGridCell cell, GridCellStyle newStyle)
protected void	createCuts(List<JRPrintElement> elements, int elementOffsetX, int elementOffsetY, boolean createXCuts)
protected EmptyGridCell	emptyCell(GridCellSize size, GridCellStyle style)
int	getColumnWidth(int col)
JRPrintElement	getElement(PrintElementIndex parentIndex, int index)
Grid	getGrid()	Returns the constructed element grid.
int	getMaxRowHeight(int rowIndex)
int	getRowHeight(int row)
static int	getRowHeight(GridRow row)
int	getWidth()	Returns the width available for the grid.
CutsInfo	getXCuts()	Returns the list of cut points on the X axis for the grid.
CutsInfo	getYCuts()	Returns the list of cut points on the Y axis for the grid.
protected void	horizontallyMergeEmptyCells(int startRow, int startCol, int endRow, int endCol)
protected boolean	isEmpty(JRExporterGridCell cell)
protected boolean	isOverlap(int row1, int col1, int row2, int col2)
protected void	layoutGrid(PrintElementIndex parentElementIndex, List<JRPrintElement> elements)	Constructs the element grid.
protected void	setFrameCellsStyle(JRPrintFrame frame, int row1, int col1, int row2, int col2)
protected void	setGridElement(JRPrintElement element, PrintElementIndex parentIndex, int elementIndex, int row1, int col1, int row2, int col2)
protected void	setGridElements(PrintElementIndex parentIndex, List<JRPrintElement> elements, int elementOffsetX, int elementOffsetY, int startRow, int startCol, int endRow, int endCol)
protected void	setMargins(List<JRPrintElement> elements)
protected void	spanEmptyCell(int row, int col, int spanWidth, int colSpan)

Methods inherited from class java.lang.Object

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

Constructor Detail

JRGridLayout

public JRGridLayout(ExporterNature nature,
                    List<JRPrintElement> elements,
                    int width,
                    int height,
                    int offsetX,
                    int offsetY)

Constructor.

Parameters:

elements - the elements that should arranged in a grid

width - the width available for the grid

height - the height available for the grid

offsetX - horizontal element position offset

offsetY - vertical element position offset

JRGridLayout

public JRGridLayout(ExporterNature nature,
                    List<JRPrintElement> elements,
                    int width,
                    int height,
                    int offsetX,
                    int offsetY,
                    CutsInfo xCuts)

Constructor.

Parameters:

elements - the elements that should arranged in a grid

width - the width available for the grid

height - the height available for the grid

offsetX - horizontal element position offset

offsetY - vertical element position offset

xCuts - An optional list of pre-calculated X cuts.

JRGridLayout

protected JRGridLayout(JRGridLayout parent,
                       List<JRPrintElement> elements,
                       int width,
                       int height,
                       int offsetX,
                       int offsetY,
                       PrintElementIndex parentElementIndex)

Constructor.

Parameters:

width - the width available for the grid

height - the height available for the grid

offsetX - horizontal element position offset

offsetY - vertical element position offset

Method Detail

getElement

public JRPrintElement getElement(PrintElementIndex parentIndex,
                                 int index)

layoutGrid

protected void layoutGrid(PrintElementIndex parentElementIndex,
                          List<JRPrintElement> elements)

Constructs the element grid.

Parameters:

parentElementIndex -

cellSize

protected GridCellSize cellSize(int width,
                                int height,
                                int colSpan,
                                int rowSpan)

createCuts

protected void createCuts(List<JRPrintElement> elements,
                          int elementOffsetX,
                          int elementOffsetY,
                          boolean createXCuts)

setMargins

protected void setMargins(List<JRPrintElement> elements)

setGridElements

protected void setGridElements(PrintElementIndex parentIndex,
                               List<JRPrintElement> elements,
                               int elementOffsetX,
                               int elementOffsetY,
                               int startRow,
                               int startCol,
                               int endRow,
                               int endCol)

emptyCell

protected EmptyGridCell emptyCell(GridCellSize size,
                                  GridCellStyle style)

horizontallyMergeEmptyCells

protected void horizontallyMergeEmptyCells(int startRow,
                                           int startCol,
                                           int endRow,
                                           int endCol)

spanEmptyCell

protected void spanEmptyCell(int row,
                             int col,
                             int spanWidth,
                             int colSpan)

isEmpty

protected boolean isEmpty(JRExporterGridCell cell)

isOverlap

protected boolean isOverlap(int row1,
                            int col1,
                            int row2,
                            int col2)

setGridElement

protected void setGridElement(JRPrintElement element,
                              PrintElementIndex parentIndex,
                              int elementIndex,
                              int row1,
                              int col1,
                              int row2,
                              int col2)

cellStyle

protected GridCellStyle cellStyle(Color backcolor,
                                  Color forecolor,
                                  JRLineBox box)

setFrameCellsStyle

protected void setFrameCellsStyle(JRPrintFrame frame,
                                  int row1,
                                  int col1,
                                  int row2,
                                  int col2)

changeStyle

protected JRExporterGridCell changeStyle(JRExporterGridCell cell,
                                         GridCellStyle newStyle)

getGrid

public Grid getGrid()

Returns the constructed element grid.

Returns:

the constructed element grid

getXCuts

public CutsInfo getXCuts()

Returns the list of cut points on the X axis for the grid.

Returns:

the list of cut points on the X axis for the grid

getYCuts

public CutsInfo getYCuts()

Returns the list of cut points on the Y axis for the grid.

Returns:

the list of cut points on the Y axis for the grid

getWidth

public int getWidth()

Returns the width available for the grid.

Returns:

the width available for the grid

getColumnWidth

public int getColumnWidth(int col)

getRowHeight

public int getRowHeight(int row)

getMaxRowHeight

public int getMaxRowHeight(int rowIndex)

getRowHeight

public static int getRowHeight(GridRow row)

calculateXCuts

public static CutsInfo calculateXCuts(ExporterNature nature,
                                      JasperPrint jasperPrint,
                                      int startPageIndex,
                                      int endPageIndex,
                                      int offsetX)

This static method calculates all the X cuts for a list of pages.

Parameters:

jasperPrint - The JasperPrint document.

startPageIndex - The first page to consider.

endPageIndex - The last page to consider.

offsetX - horizontal element position offset

addXCuts

protected static void addXCuts(ExporterNature nature,
                               List<JRPrintElement> elementsList,
                               int elementOffsetX,
                               CutsInfo xCuts)

This static method calculates the X cuts for a list of print elements and stores them in the list indicated by the xCuts parameter.

Parameters:

elementsList - The list of elements to be used to determine the X cuts.

elementOffsetX - horizontal element position offset

xCuts - The list to which the X cuts are to be added.