KWordWrap Class Reference

#include <kwordwrap.h>

Public Types
enum	{ FadeOut = 0x10000000, Truncate = 0x20000000 }

Public Member Functions
	~KWordWrap ()
QRect	boundingRect () const
void	drawText (QPainter *painter, int x, int y, int flags=Qt::AlignLeft) const
QString	truncatedString (bool dots=true) const
QString	wrappedString () const

Static Public Member Functions
static void	drawFadeoutText (QPainter *p, int x, int y, int maxW, const QString &t)
static void	drawTruncateText (QPainter *p, int x, int y, int maxW, const QString &t)
static KWordWrap *	formatText (QFontMetrics &fm, const QRect &r, int flags, const QString &str, int len=-1)

Detailed Description

Word-wrap algorithm that takes into account beautifulness ;)

That means:

• not letting a letter alone on the last line,
• breaking at punctuation signs (not only at spaces)
• improved handling of (), [] and {}
• improved handling of '/' (e.g. for paths)

Usage: call the static method, formatText, with the text to wrap and the constraining rectangle etc., it will return an instance of KWordWrap containing internal data, result of the word-wrapping. From that instance you can retrieve the boundingRect, and invoke drawing.

This design allows to call the word-wrap algorithm only when the text changes and not every time we want to know the bounding rect or draw the text.

Author

David Faure faure.nosp@m.@kde.nosp@m..org

Definition at line 49 of file kwordwrap.h.

Member Enumeration Documentation

anonymous enum

Use this flag in drawText() if you want to fade out the text if it does not fit into the constraining rectangle.

Enumerator
FadeOut
Truncate

Definition at line 56 of file kwordwrap.h.

Constructor & Destructor Documentation

KWordWrap::~KWordWrap

(

)

Destructor.

Definition at line 155 of file kwordwrap.cpp.

Member Function Documentation

QRect KWordWrap::boundingRect

(

)

const

Returns

the bounding rect, calculated by formatText. The width is the width of the widest text line, and never wider than the rectangle given to formatText. The height is the text block. X and Y are always 0.

Definition at line 300 of file kwordwrap.cpp.

void KWordWrap::drawFadeoutText ( QPainter *  p, int  x, int  y, int  maxW, const QString &  t  )

static

Draws the string t at the given coordinates, if it does not fit into maxW the text will be faded out.

Parameters

p	the painter to use. Must have set the pen for the text color and the background for the color to fade out
x	the horizontal position of the text
y	the vertical position of the text
maxW	the maximum width of the text (including the fade-out effect)
t	the text to draw

Definition at line 191 of file kwordwrap.cpp.

void KWordWrap::drawText	(	QPainter *	painter,
		int	x,
		int	y,
		int	flags = Qt::AlignLeft
	)		const

Draw the text that has been previously wrapped, at position x,y.

Flags are for alignment, e.g. Qt::AlignHCenter. Default is Qt::AlignAuto.

Parameters

painter	the QPainter to use.
x	the horizontal position of the text
y	the vertical position of the text
flags	the ORed text alignment flags from the Qt namespace, ORed with FadeOut if you want the text to fade out if it does not fit (the painter's background must be set accordingly)

Definition at line 244 of file kwordwrap.cpp.

void KWordWrap::drawTruncateText ( QPainter *  p, int  x, int  y, int  maxW, const QString &  t  )

static

Draws the string t at the given coordinates, if it does not fit into maxW the text will be truncated.

Parameters

p	the painter to use
x	the horizontal position of the text
y	the vertical position of the text
maxW	the maximum width of the text (including the '...')
t	the text to draw

Definition at line 238 of file kwordwrap.cpp.

KWordWrap * KWordWrap::formatText ( QFontMetrics &  fm, const QRect &  r, int  flags, const QString &  str, int  len = -1  )

static

Main method for wrapping text.

Parameters

fm	Font metrics, for the chosen font. Better cache it, creating a QFontMetrics is expensive.
r	Constraining rectangle. Only the width and height matter. With negative height the complete text will be rendered
flags	currently unused
str	The text to be wrapped.
len	Length of text to wrap (default is -1 for all).

Returns

a KWordWrap instance. The caller is responsible for storing and deleting the result.

Definition at line 40 of file kwordwrap.cpp.

QString KWordWrap::truncatedString

(

bool

dots = true

)

const

Returns

the original string, truncated to the first line. If dots was set, '...' is appended in case the string was truncated. Bug: Note that the '...' come out of the bounding rect.

Definition at line 174 of file kwordwrap.cpp.

QString KWordWrap::wrappedString

(

)

const

Returns

the original string, with '
' inserted where the text is broken by the wordwrap algorithm.

Definition at line 159 of file kwordwrap.cpp.

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The documentation for this class was generated from the following files:

• kwordwrap.h
• kwordwrap.cpp