- java.lang.Object
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- com.itextpdf.text.pdf.ColumnText
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public class ColumnText extends java.lang.ObjectFormats text in a columnwise form. The text is bound on the left and on the right by a sequence of lines. This allows the column to have any shape, not only rectangular.Several parameters can be set like the first paragraph line indent and extra space between paragraphs.
A call to the method
gowill return one of the following situations: the column ended or the text ended.I the column ended, a new column definition can be loaded with the method
setColumnsand the methodgocan be called again.If the text ended, more text can be loaded with
addTextand the methodgocan be called again.
The only limitation is that one or more complete paragraphs must be loaded each time.Full bidirectional reordering is supported. If the run direction is
PdfWriter.RUN_DIRECTION_RTLthe meaning of the horizontal alignments and margins is mirrored.- Author:
- Paulo Soares (psoares@consiste.pt)
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Field Summary
Fields Modifier and Type Field Description protected intalignmentThe column alignment.static intAR_COMPOSEDTASHKEELCompose the tashkeel in the ligatures.static intAR_LIGDo some extra double ligatures.static intAR_NOVOWELEliminate the arabic vowelsprotected BidiLinebidiLineThe chunks that form the text.protected PdfContentBytecanvasThePdfContentwhere the text will be written to.protected PdfContentByte[]canvasesprotected booleancompositeprotected ColumnTextcompositeColumnprotected java.util.LinkedListcompositeElementsprotected floatcurrentLeadingThe leading for the current line.protected floatdescenderstatic intDIGIT_TYPE_ANDigit type option: Use Arabic-Indic digits (U+0660...U+0669).static intDIGIT_TYPE_AN_EXTENDEDDigit type option: Use Eastern (Extended) Arabic-Indic digits (U+06f0...U+06f9).static intDIGITS_AN2ENDigit shaping option: Replace Arabic-Indic digits by European digits (U+0030...U+0039).static intDIGITS_EN2ANDigit shaping option: Replace European digits (U+0030...U+0039) by Arabic-Indic digits.static intDIGITS_EN2AN_INIT_ALDigit shaping option: Replace European digits (U+0030...U+0039) by Arabic-Indic digits if the most recent strongly directional character is an Arabic letter (its Bidi direction value is RIGHT_TO_LEFT_ARABIC).static intDIGITS_EN2AN_INIT_LRDigit shaping option: Replace European digits (U+0030...U+0039) by Arabic-Indic digits if the most recent strongly directional character is an Arabic letter (its Bidi direction value is RIGHT_TO_LEFT_ARABIC).protected floatextraParagraphSpaceThe extra space between paragraphs.protected floatfixedLeadingThe fixed text leading.protected floatfollowingIndentThe following paragraph lines indent.static floatGLOBAL_SPACE_CHAR_RATIOthe space char ratioprotected floatindentThe first paragraph line indent.protected java.util.ArrayListleftWallThe left column bound.protected floatleftXprotected static intLINE_STATUS_NOLINEThe line cannot fit this column position.protected static intLINE_STATUS_OFFLIMITSThe line is out the column limits.protected static intLINE_STATUS_OKThe column is valid.protected intlineStatusThe line status when trying to fit a line to a column.protected intlistIdxprotected floatmaxYUpper bound of the column.protected floatminYLower bound of the column.protected floatmultipliedLeadingThe text leading that is multiplied by the biggest font size in the line.static intNO_MORE_COLUMNSignals that there is no more column.static intNO_MORE_TEXTSignals that there is no more text available.protected booleanrectangularModeprotected floatrectangularWidthThe width of the line when the column is defined as a simple rectangle.protected floatrightIndentThe right paragraph lines indent.protected java.util.ArrayListrightWallThe right column bound.protected floatrightXprotected intrunDirectionstatic intSTART_COLUMNInitial value of the status.protected PhrasewaitPhraseprotected floatyLineThe current y line location.
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Constructor Summary
Constructors Constructor Description ColumnText(PdfContentByte canvas)Creates aColumnText.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description voidaddElement(Element element)Adds an element.voidaddText(Chunk chunk)Adds aChunkto the current text array.voidaddText(Phrase phrase)Adds aPhraseto the current text array.voidclearChunks()Clears the chunk array.protected java.util.ArrayListconvertColumn(float[] cLine)Converts a sequence of lines representing one of the column bounds into an internal format.static ColumnTextduplicate(ColumnText org)Creates an independent duplicated of the instanceorg.protected float[]findLimitsOneLine()Finds the intersection between theyLineand the two column bounds.protected floatfindLimitsPoint(java.util.ArrayList wall)Finds the intersection between theyLineand the column.protected float[]findLimitsTwoLines()Finds the intersection between theyLine, theyLine-leadingand the two column bounds.intgetAlignment()Gets the alignment.intgetArabicOptions()Gets the arabic shaping options.PdfContentBytegetCanvas()Gets the canvas.PdfContentByte[]getCanvases()Gets the canvases.floatgetDescender()Gets the biggest descender value of the last line written.floatgetExtraParagraphSpace()Sets the extra space between paragraphs.floatgetFilledWidth()Gets the real width used by the largest line.floatgetFollowingIndent()Gets the following paragraph lines indent.floatgetIndent()Gets the first paragraph line indent.floatgetLeading()Gets the fixed leading.intgetLinesWritten()Gets the number of lines written.floatgetMultipliedLeading()Gets the variable leading.floatgetRightIndent()Gets the right paragraph lines indent.intgetRunDirection()Gets the run direction.floatgetSpaceCharRatio()Gets the space/character extra spacing ratio for fully justified text.static floatgetWidth(Phrase phrase)Gets the width that the line will occupy after writing.static floatgetWidth(Phrase phrase, int runDirection, int arabicOptions)Gets the width that the line will occupy after writing.floatgetYLine()Gets the yLine.intgo()Outputs the lines to the document.intgo(boolean simulate)Outputs the lines to the document.protected intgoComposite(boolean simulate)static booleanhasMoreText(int status)Checks the status variable and looks if there's still some text.booleanisAdjustFirstLine()Gets the first line adjustment property.booleanisUseAscender()Checks if UseAscender is enabled/disabled.ColumnTextsetACopy(ColumnText org)Makes this instance an independent copy oforg.voidsetAdjustFirstLine(boolean adjustFirstLine)Sets the first line adjustment.voidsetAlignment(int alignment)Sets the alignment.voidsetArabicOptions(int arabicOptions)Sets the arabic shaping options.voidsetCanvas(PdfContentByte canvas)Sets the canvas.voidsetCanvases(PdfContentByte[] canvases)Sets the canvases.voidsetColumns(float[] leftLine, float[] rightLine)Sets the columns bounds.voidsetExtraParagraphSpace(float extraParagraphSpace)Sets the extra space between paragraphs.voidsetFilledWidth(float filledWidth)Sets the real width used by the largest line.voidsetFollowingIndent(float indent)Sets the following paragraph lines indent.voidsetIndent(float indent)Sets the first paragraph line indent.voidsetLeading(float leading)Sets the leading to fixed.voidsetLeading(float fixedLeading, float multipliedLeading)Sets the leading fixed and variable.voidsetRightIndent(float indent)Sets the right paragraph lines indent.voidsetRunDirection(int runDirection)Sets the run direction.voidsetSimpleColumn(float llx, float lly, float urx, float ury)Simplified method for rectangular columns.voidsetSimpleColumn(float llx, float lly, float urx, float ury, float leading, int alignment)Simplified method for rectangular columns.voidsetSimpleColumn(Phrase phrase, float llx, float lly, float urx, float ury, float leading, int alignment)Simplified method for rectangular columns.protected voidsetSimpleVars(ColumnText org)voidsetSpaceCharRatio(float spaceCharRatio)Sets the ratio between the extra word spacing and the extra character spacing when the text is fully justified.voidsetText(Phrase phrase)Replaces the current text array with thisPhrase.voidsetUseAscender(boolean useAscender)Enables/Disables adjustment of first line height based on max ascender.voidsetYLine(float yLine)Sets the yLine.static voidshowTextAligned(PdfContentByte canvas, int alignment, Phrase phrase, float x, float y, float rotation)Shows a line of text.static voidshowTextAligned(PdfContentByte canvas, int alignment, Phrase phrase, float x, float y, float rotation, int runDirection, int arabicOptions)Shows a line of text.voidupdateFilledWidth(float w)Replaces thefilledWidthif greater than the existing one.booleanzeroHeightElement()Checks if the element has a height of 0.
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Field Detail
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AR_NOVOWEL
public static final int AR_NOVOWEL
Eliminate the arabic vowels- See Also:
- Constant Field Values
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AR_COMPOSEDTASHKEEL
public static final int AR_COMPOSEDTASHKEEL
Compose the tashkeel in the ligatures.- See Also:
- Constant Field Values
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AR_LIG
public static final int AR_LIG
Do some extra double ligatures.- See Also:
- Constant Field Values
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DIGITS_EN2AN
public static final int DIGITS_EN2AN
Digit shaping option: Replace European digits (U+0030...U+0039) by Arabic-Indic digits.- See Also:
- Constant Field Values
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DIGITS_AN2EN
public static final int DIGITS_AN2EN
Digit shaping option: Replace Arabic-Indic digits by European digits (U+0030...U+0039).- See Also:
- Constant Field Values
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DIGITS_EN2AN_INIT_LR
public static final int DIGITS_EN2AN_INIT_LR
Digit shaping option: Replace European digits (U+0030...U+0039) by Arabic-Indic digits if the most recent strongly directional character is an Arabic letter (its Bidi direction value is RIGHT_TO_LEFT_ARABIC). The initial state at the start of the text is assumed to be not an Arabic, letter, so European digits at the start of the text will not change. Compare to DIGITS_ALEN2AN_INIT_AL.- See Also:
- Constant Field Values
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DIGITS_EN2AN_INIT_AL
public static final int DIGITS_EN2AN_INIT_AL
Digit shaping option: Replace European digits (U+0030...U+0039) by Arabic-Indic digits if the most recent strongly directional character is an Arabic letter (its Bidi direction value is RIGHT_TO_LEFT_ARABIC). The initial state at the start of the text is assumed to be an Arabic, letter, so European digits at the start of the text will change. Compare to DIGITS_ALEN2AN_INT_LR.- See Also:
- Constant Field Values
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DIGIT_TYPE_AN
public static final int DIGIT_TYPE_AN
Digit type option: Use Arabic-Indic digits (U+0660...U+0669).- See Also:
- Constant Field Values
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DIGIT_TYPE_AN_EXTENDED
public static final int DIGIT_TYPE_AN_EXTENDED
Digit type option: Use Eastern (Extended) Arabic-Indic digits (U+06f0...U+06f9).- See Also:
- Constant Field Values
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runDirection
protected int runDirection
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GLOBAL_SPACE_CHAR_RATIO
public static final float GLOBAL_SPACE_CHAR_RATIO
the space char ratio- See Also:
- Constant Field Values
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START_COLUMN
public static final int START_COLUMN
Initial value of the status.- See Also:
- Constant Field Values
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NO_MORE_TEXT
public static final int NO_MORE_TEXT
Signals that there is no more text available.- See Also:
- Constant Field Values
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NO_MORE_COLUMN
public static final int NO_MORE_COLUMN
Signals that there is no more column.- See Also:
- Constant Field Values
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LINE_STATUS_OK
protected static final int LINE_STATUS_OK
The column is valid.- See Also:
- Constant Field Values
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LINE_STATUS_OFFLIMITS
protected static final int LINE_STATUS_OFFLIMITS
The line is out the column limits.- See Also:
- Constant Field Values
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LINE_STATUS_NOLINE
protected static final int LINE_STATUS_NOLINE
The line cannot fit this column position.- See Also:
- Constant Field Values
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maxY
protected float maxY
Upper bound of the column.
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minY
protected float minY
Lower bound of the column.
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leftX
protected float leftX
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rightX
protected float rightX
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alignment
protected int alignment
The column alignment. Default is left alignment.
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leftWall
protected java.util.ArrayList leftWall
The left column bound.
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rightWall
protected java.util.ArrayList rightWall
The right column bound.
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bidiLine
protected BidiLine bidiLine
The chunks that form the text.
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yLine
protected float yLine
The current y line location. Text will be written at this line minus the leading.
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currentLeading
protected float currentLeading
The leading for the current line.
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fixedLeading
protected float fixedLeading
The fixed text leading.
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multipliedLeading
protected float multipliedLeading
The text leading that is multiplied by the biggest font size in the line.
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canvas
protected PdfContentByte canvas
ThePdfContentwhere the text will be written to.
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canvases
protected PdfContentByte[] canvases
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lineStatus
protected int lineStatus
The line status when trying to fit a line to a column.
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indent
protected float indent
The first paragraph line indent.
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followingIndent
protected float followingIndent
The following paragraph lines indent.
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rightIndent
protected float rightIndent
The right paragraph lines indent.
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extraParagraphSpace
protected float extraParagraphSpace
The extra space between paragraphs.
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rectangularWidth
protected float rectangularWidth
The width of the line when the column is defined as a simple rectangle.
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rectangularMode
protected boolean rectangularMode
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descender
protected float descender
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composite
protected boolean composite
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compositeColumn
protected ColumnText compositeColumn
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compositeElements
protected java.util.LinkedList compositeElements
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listIdx
protected int listIdx
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waitPhrase
protected Phrase waitPhrase
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Constructor Detail
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ColumnText
public ColumnText(PdfContentByte canvas)
Creates aColumnText.- Parameters:
canvas- the place where the text will be written to. Can be a template.
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Method Detail
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duplicate
public static ColumnText duplicate(ColumnText org)
Creates an independent duplicated of the instanceorg.- Parameters:
org- the originalColumnText- Returns:
- the duplicated
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setACopy
public ColumnText setACopy(ColumnText org)
Makes this instance an independent copy oforg.- Parameters:
org- the originalColumnText- Returns:
- itself
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setSimpleVars
protected void setSimpleVars(ColumnText org)
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addText
public void addText(Phrase phrase)
Adds aPhraseto the current text array. Will not have any effect if addElement() was called before.- Parameters:
phrase- the text
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setText
public void setText(Phrase phrase)
Replaces the current text array with thisPhrase. Anything added previously with addElement() is lost.- Parameters:
phrase- the text
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addText
public void addText(Chunk chunk)
Adds aChunkto the current text array. Will not have any effect if addElement() was called before.- Parameters:
chunk- the text
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addElement
public void addElement(Element element)
Adds an element. Elements supported areParagraph,List,PdfPTable,ImageandGraphic.It removes all the text placed with
addText().- Parameters:
element- theElement
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convertColumn
protected java.util.ArrayList convertColumn(float[] cLine)
Converts a sequence of lines representing one of the column bounds into an internal format.Each array element will contain a
float[4]representing the line x = ax + b.- Parameters:
cLine- the column array- Returns:
- the converted array
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findLimitsPoint
protected float findLimitsPoint(java.util.ArrayList wall)
Finds the intersection between theyLineand the column. It will set thelineStatusappropriately.- Parameters:
wall- the column to intersect- Returns:
- the x coordinate of the intersection
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findLimitsOneLine
protected float[] findLimitsOneLine()
Finds the intersection between theyLineand the two column bounds. It will set thelineStatusappropriately.- Returns:
- a
float[2]with the x coordinates of the intersection
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findLimitsTwoLines
protected float[] findLimitsTwoLines()
Finds the intersection between theyLine, theyLine-leadingand the two column bounds. It will set thelineStatusappropriately.- Returns:
- a
float[4]with the x coordinates of the intersection
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setColumns
public void setColumns(float[] leftLine, float[] rightLine)Sets the columns bounds. Each column bound is described by afloat[]with the line points [x1,y1,x2,y2,...]. The array must have at least 4 elements.- Parameters:
leftLine- the left column boundrightLine- the right column bound
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setSimpleColumn
public void setSimpleColumn(Phrase phrase, float llx, float lly, float urx, float ury, float leading, int alignment)
Simplified method for rectangular columns.- Parameters:
phrase- aPhrasellx- the lower left x cornerlly- the lower left y cornerurx- the upper right x cornerury- the upper right y cornerleading- the leadingalignment- the column alignment
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setSimpleColumn
public void setSimpleColumn(float llx, float lly, float urx, float ury, float leading, int alignment)Simplified method for rectangular columns.- Parameters:
llx- the lower left x cornerlly- the lower left y cornerurx- the upper right x cornerury- the upper right y cornerleading- the leadingalignment- the column alignment
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setSimpleColumn
public void setSimpleColumn(float llx, float lly, float urx, float ury)Simplified method for rectangular columns.- Parameters:
llx-lly-urx-ury-
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setLeading
public void setLeading(float leading)
Sets the leading to fixed.- Parameters:
leading- the leading
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setLeading
public void setLeading(float fixedLeading, float multipliedLeading)Sets the leading fixed and variable. The resultant leading will be fixedLeading+multipliedLeading*maxFontSize where maxFontSize is the size of the biggest font in the line.- Parameters:
fixedLeading- the fixed leadingmultipliedLeading- the variable leading
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getLeading
public float getLeading()
Gets the fixed leading.- Returns:
- the leading
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getMultipliedLeading
public float getMultipliedLeading()
Gets the variable leading.- Returns:
- the leading
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setYLine
public void setYLine(float yLine)
Sets the yLine. The line will be written to yLine-leading.- Parameters:
yLine- the yLine
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getYLine
public float getYLine()
Gets the yLine.- Returns:
- the yLine
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setAlignment
public void setAlignment(int alignment)
Sets the alignment.- Parameters:
alignment- the alignment
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getAlignment
public int getAlignment()
Gets the alignment.- Returns:
- the alignment
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setIndent
public void setIndent(float indent)
Sets the first paragraph line indent.- Parameters:
indent- the indent
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getIndent
public float getIndent()
Gets the first paragraph line indent.- Returns:
- the indent
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setFollowingIndent
public void setFollowingIndent(float indent)
Sets the following paragraph lines indent.- Parameters:
indent- the indent
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getFollowingIndent
public float getFollowingIndent()
Gets the following paragraph lines indent.- Returns:
- the indent
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setRightIndent
public void setRightIndent(float indent)
Sets the right paragraph lines indent.- Parameters:
indent- the indent
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getRightIndent
public float getRightIndent()
Gets the right paragraph lines indent.- Returns:
- the indent
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go
public int go() throws DocumentExceptionOutputs the lines to the document. It is equivalent togo(false).- Returns:
- returns the result of the operation. It can be
NO_MORE_TEXTand/orNO_MORE_COLUMN - Throws:
DocumentException- on error
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go
public int go(boolean simulate) throws DocumentExceptionOutputs the lines to the document. The output can be simulated.- Parameters:
simulate-trueto simulate the writing to the document- Returns:
- returns the result of the operation. It can be
NO_MORE_TEXTand/orNO_MORE_COLUMN - Throws:
DocumentException- on error
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getExtraParagraphSpace
public float getExtraParagraphSpace()
Sets the extra space between paragraphs.- Returns:
- the extra space between paragraphs
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setExtraParagraphSpace
public void setExtraParagraphSpace(float extraParagraphSpace)
Sets the extra space between paragraphs.- Parameters:
extraParagraphSpace- the extra space between paragraphs
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clearChunks
public void clearChunks()
Clears the chunk array. A call togo()will always return NO_MORE_TEXT.
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getSpaceCharRatio
public float getSpaceCharRatio()
Gets the space/character extra spacing ratio for fully justified text.- Returns:
- the space/character extra spacing ratio
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setSpaceCharRatio
public void setSpaceCharRatio(float spaceCharRatio)
Sets the ratio between the extra word spacing and the extra character spacing when the text is fully justified. Extra word spacing will growspaceCharRatiotimes more than extra character spacing. If the ratio isPdfWriter.NO_SPACE_CHAR_RATIOthen the extra character spacing will be zero.- Parameters:
spaceCharRatio- the ratio between the extra word spacing and the extra character spacing
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setRunDirection
public void setRunDirection(int runDirection)
Sets the run direction.- Parameters:
runDirection- the run direction
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getRunDirection
public int getRunDirection()
Gets the run direction.- Returns:
- the run direction
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getLinesWritten
public int getLinesWritten()
Gets the number of lines written.- Returns:
- the number of lines written
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getArabicOptions
public int getArabicOptions()
Gets the arabic shaping options.- Returns:
- the arabic shaping options
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setArabicOptions
public void setArabicOptions(int arabicOptions)
Sets the arabic shaping options. The option can be AR_NOVOWEL, AR_COMPOSEDTASHKEEL and AR_LIG.- Parameters:
arabicOptions- the arabic shaping options
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getDescender
public float getDescender()
Gets the biggest descender value of the last line written.- Returns:
- the biggest descender value of the last line written
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getWidth
public static float getWidth(Phrase phrase, int runDirection, int arabicOptions)
Gets the width that the line will occupy after writing. Only the width of the first line is returned.- Parameters:
phrase- thePhrasecontaining the linerunDirection- the run directionarabicOptions- the options for the arabic shaping- Returns:
- the width of the line
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getWidth
public static float getWidth(Phrase phrase)
Gets the width that the line will occupy after writing. Only the width of the first line is returned.- Parameters:
phrase- thePhrasecontaining the line- Returns:
- the width of the line
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showTextAligned
public static void showTextAligned(PdfContentByte canvas, int alignment, Phrase phrase, float x, float y, float rotation, int runDirection, int arabicOptions)
Shows a line of text. Only the first line is written.- Parameters:
canvas- where the text is to be written toalignment- the alignment. It is not influenced by the run directionphrase- thePhrasewith the textx- the x reference positiony- the y reference positionrotation- the rotation to be applied in degrees counterclockwiserunDirection- the run directionarabicOptions- the options for the arabic shaping
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showTextAligned
public static void showTextAligned(PdfContentByte canvas, int alignment, Phrase phrase, float x, float y, float rotation)
Shows a line of text. Only the first line is written.- Parameters:
canvas- where the text is to be written toalignment- the alignmentphrase- thePhrasewith the textx- the x reference positiony- the y reference positionrotation- the rotation to be applied in degrees counterclockwise
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goComposite
protected int goComposite(boolean simulate) throws DocumentException- Throws:
DocumentException
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getCanvas
public PdfContentByte getCanvas()
Gets the canvas. If a set of four canvases exists, the TEXTCANVAS is returned.- Returns:
- a PdfContentByte.
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setCanvas
public void setCanvas(PdfContentByte canvas)
Sets the canvas. If before a set of four canvases was set, it is being unset.- Parameters:
canvas-
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setCanvases
public void setCanvases(PdfContentByte[] canvases)
Sets the canvases.- Parameters:
canvases-
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getCanvases
public PdfContentByte[] getCanvases()
Gets the canvases.- Returns:
- an array of PdfContentByte
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zeroHeightElement
public boolean zeroHeightElement()
Checks if the element has a height of 0.- Returns:
- true or false
- Since:
- 2.1.2
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isUseAscender
public boolean isUseAscender()
Checks if UseAscender is enabled/disabled.- Returns:
- true is the adjustment of the first line height is based on max ascender.
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setUseAscender
public void setUseAscender(boolean useAscender)
Enables/Disables adjustment of first line height based on max ascender.- Parameters:
useAscender- enable adjustment if true
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hasMoreText
public static boolean hasMoreText(int status)
Checks the status variable and looks if there's still some text.
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getFilledWidth
public float getFilledWidth()
Gets the real width used by the largest line.- Returns:
- the real width used by the largest line
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setFilledWidth
public void setFilledWidth(float filledWidth)
Sets the real width used by the largest line. Only used to set it to zero to start another measurement.- Parameters:
filledWidth- the real width used by the largest line
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updateFilledWidth
public void updateFilledWidth(float w)
Replaces thefilledWidthif greater than the existing one.- Parameters:
w- the newfilledWidthif greater than the existing one
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isAdjustFirstLine
public boolean isAdjustFirstLine()
Gets the first line adjustment property.- Returns:
- the first line adjustment property.
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setAdjustFirstLine
public void setAdjustFirstLine(boolean adjustFirstLine)
Sets the first line adjustment. Some objects have properties, like spacing before, that behave differently if the object is the first to be written after go() or not. The first line adjustment istrueby default but can be changed if several objects are to be placed one after the other in the same column calling go() several times.- Parameters:
adjustFirstLine-trueto adjust the first line,falseotherwise
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