Package org.gnome.pango

Class Item

java.lang.Object

io.github.jwharm.javagi.base.ProxyInstance

org.gnome.pango.Item

All Implemented Interfaces:

Proxy

@Generated("io.github.jwharm.JavaGI")
public class Item
extends ProxyInstance

The PangoItem structure stores information about a segment of text.

You typically obtain PangoItems by itemizing a piece of text with Pango.itemize(org.gnome.pango.Context, java.lang.String, int, int, org.gnome.pango.AttrList, org.gnome.pango.AttrIterator).

Constructor Summary

Constructors

Constructor	Description
Item()	Creates a new PangoItem structure initialized to default values.
Item(MemorySegment address)	Create a Item proxy instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
void	applyAttrs(AttrIterator iter)	Add attributes to a PangoItem.
Item	copy()	Copy an existing PangoItem structure.
void	free()	Free a PangoItem and all associated memory.
int	getCharOffset()	Returns the character offset of the item from the beginning of the itemized text.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
static Type	getType()	Get the GType of the Item class
Analysis	readAnalysis()	Read the value of the field analysis.
int	readLength()	Read the value of the field length.
int	readNumChars()	Read the value of the field num_chars.
int	readOffset()	Read the value of the field offset.
Item	split(int splitIndex, int splitOffset)	Modifies this Item to cover only the text after splitIndex, and returns a new item that covers the text before splitIndex that used to be in this Item.
void	writeAnalysis(Analysis analysis)	Write a value in the field analysis.
void	writeLength(int length)	Write a value in the field length.
void	writeNumChars(int numChars)	Write a value in the field num_chars.
void	writeOffset(int offset)	Write a value in the field offset.

Methods inherited from class io.github.jwharm.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

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

Constructor Details

Item

public Item(MemorySegment address)

Create a Item proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

Item

public Item()

Creates a new PangoItem structure initialized to default values.

Method Details

getType

public static Type getType()

Get the GType of the Item class

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

readOffset

public int readOffset()

Read the value of the field offset.

Returns:

The value of the field offset

writeOffset

public void writeOffset(int offset)

Write a value in the field offset.

Parameters:

offset - The new value for the field offset

readLength

public int readLength()

Read the value of the field length.

Returns:

The value of the field length

writeLength

public void writeLength(int length)

Write a value in the field length.

Parameters:

length - The new value for the field length

readNumChars

public int readNumChars()

Read the value of the field num_chars.

Returns:

The value of the field num_chars

writeNumChars

public void writeNumChars(int numChars)

Write a value in the field num_chars.

Parameters:

numChars - The new value for the field num_chars

readAnalysis

public Analysis readAnalysis()

Read the value of the field analysis.

Returns:

The value of the field analysis

writeAnalysis

public void writeAnalysis(Analysis analysis)

Write a value in the field analysis.

Parameters:

analysis - The new value for the field analysis

applyAttrs

public void applyAttrs(AttrIterator iter)

Add attributes to a PangoItem.

The idea is that you have attributes that don't affect itemization, such as font features, so you filter them out using AttrList.filter(org.gnome.pango.AttrFilterFunc), itemize your text, then reapply the attributes to the resulting items using this function.

The iter should be positioned before the range of the item, and will be advanced past it. This function is meant to be called in a loop over the items resulting from itemization, while passing the iter to each call.

Parameters:

iter - a PangoAttrIterator

copy

public Item copy()

Copy an existing PangoItem structure.

Returns:

the newly allocated PangoItem

free

public void free()

Free a PangoItem and all associated memory.

getCharOffset

public int getCharOffset()

Returns the character offset of the item from the beginning of the itemized text.

If the item has not been obtained from Pango's itemization machinery, then the character offset is not available. In that case, this function returns -1.

Returns:

the character offset of the item from the beginning of the itemized text, or -1

split

public Item split(int splitIndex,
 int splitOffset)

Modifies this Item to cover only the text after splitIndex, and returns a new item that covers the text before splitIndex that used to be in this Item.

You can think of splitIndex as the length of the returned item. splitIndex may not be 0, and it may not be greater than or equal to the length of this Item (that is, there must be at least one byte assigned to each item, you can't create a zero-length item). splitOffset is the length of the first item in chars, and must be provided because the text used to generate the item isn't available, so pango_item_split() can't count the char length of the split items itself.

Parameters:

splitIndex - byte index of position to split item, relative to the start of the item

splitOffset - number of chars between start of this Item and splitIndex

Returns:

new item representing text before splitIndex, which should be freed with free().