PgLayoutIter

A #PangoLayoutIter structure can be used to iterate over the visual extents of a #PangoLayout.

The #PangoLayoutIter structure is opaque, and has no user-visible fields.

Constructors

this
this(PangoLayoutIter* pangoLayoutIter)

Sets our main struct and passes it to the parent class.

Members

Functions

atLastLine
bool atLastLine()

Determines whether @iter is on the last line of the layout.

copy
PgLayoutIter copy()

Copies a #PangoLayoutIter.

free
void free()

Frees an iterator that's no longer in use.

getBaseline
int getBaseline()

Gets the Y position of the current line's baseline, in layout coordinates (origin at top left of the entire layout).

getCharExtents
void getCharExtents(PangoRectangle logicalRect)

Gets the extents of the current character, in layout coordinates (origin is the top left of the entire layout). Only logical extents can sensibly be obtained for characters; ink extents make sense only down to the level of clusters.

getClusterExtents
void getClusterExtents(PangoRectangle inkRect, PangoRectangle logicalRect)

Gets the extents of the current cluster, in layout coordinates (origin is the top left of the entire layout).

getIndex
int getIndex()

Gets the current byte index. Note that iterating forward by char moves in visual order, not logical order, so indexes may not be sequential. Also, the index may be equal to the length of the text in the layout, if on the %NULL run (see pango_layout_iter_get_run()).

getLayout
PgLayout getLayout()

Gets the layout associated with a #PangoLayoutIter.

getLayoutExtents
void getLayoutExtents(PangoRectangle inkRect, PangoRectangle logicalRect)

Obtains the extents of the #PangoLayout being iterated over. @ink_rect or @logical_rect can be %NULL if you aren't interested in them.

getLine
PgLayoutLine getLine()

Gets the current line.

getLineExtents
void getLineExtents(PangoRectangle inkRect, PangoRectangle logicalRect)

Obtains the extents of the current line. @ink_rect or @logical_rect can be %NULL if you aren't interested in them. Extents are in layout coordinates (origin is the top-left corner of the entire #PangoLayout). Thus the extents returned by this function will be the same width/height but not at the same x/y as the extents returned from pango_layout_line_get_extents().

getLineReadonly
PgLayoutLine getLineReadonly()

Gets the current line for read-only access.

getLineYrange
void getLineYrange(int y0, int y1)

Divides the vertical space in the #PangoLayout being iterated over between the lines in the layout, and returns the space belonging to the current line. A line's range includes the line's logical extents, plus half of the spacing above and below the line, if pango_layout_set_spacing() has been called to set layout spacing. The Y positions are in layout coordinates (origin at top left of the entire layout).

getPgLayoutIterStruct
PangoLayoutIter* getPgLayoutIterStruct()

Get the main Gtk struct

getRun
PangoLayoutRun* getRun()

Gets the current run. When iterating by run, at the end of each line, there's a position with a %NULL run, so this function can return %NULL. The %NULL run at the end of each line ensures that all lines have at least one run, even lines consisting of only a newline.

getRunExtents
void getRunExtents(PangoRectangle inkRect, PangoRectangle logicalRect)

Gets the extents of the current run in layout coordinates (origin is the top left of the entire layout).

getRunReadonly
PangoLayoutRun* getRunReadonly()

Gets the current run. When iterating by run, at the end of each line, there's a position with a %NULL run, so this function can return %NULL. The %NULL run at the end of each line ensures that all lines have at least one run, even lines consisting of only a newline.

getStruct
void* getStruct()

the main Gtk struct as a void*

nextChar
bool nextChar()

Moves @iter forward to the next character in visual order. If @iter was already at the end of the layout, returns %FALSE.

nextCluster
bool nextCluster()

Moves @iter forward to the next cluster in visual order. If @iter was already at the end of the layout, returns %FALSE.

nextLine
bool nextLine()

Moves @iter forward to the start of the next line. If @iter is already on the last line, returns %FALSE.

nextRun
bool nextRun()

Moves @iter forward to the next run in visual order. If @iter was already at the end of the layout, returns %FALSE.

Static functions

getType
GType getType()

Variables

pangoLayoutIter
PangoLayoutIter* pangoLayoutIter;

the main Gtk struct

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