/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */
 
// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage

/*
 * Conversion parameters:
 * inFile  = pango-Text-Processing.html
 * outPack = pango
 * outFile = PgContext
 * strct   = PangoContext
 * realStrct=
 * ctorStrct=
 * clss    = PgContext
 * interf  = 
 * class Code: Yes
 * interface Code: No
 * template for:
 * extend  = 
 * implements:
 * prefixes:
 * 	- pango_context_
 * 	- pango_
 * omit structs:
 * omit prefixes:
 * 	- pango_item_
 * omit code:
 * 	- pango_break
 * omit signals:
 * imports:
 * 	- glib.Str
 * 	- glib.ListG
 * 	- pango.PgFont
 * 	- pango.PgFontMap
 * 	- pango.PgFontset
 * 	- pango.PgFontFamily
 * 	- pango.PgFontMetrics
 * 	- pango.PgFontDescription
 * 	- pango.PgLanguage
 * 	- pango.PgMatrix
 * 	- pango.PgAttributeList
 * 	- pango.PgAttributeIterator
 * 	- pango.PgGlyphString
 * structWrap:
 * 	- GList* -> ListG
 * 	- PangoAttrIterator* -> PgAttributeIterator
 * 	- PangoAttrList* -> PgAttributeList
 * 	- PangoContext* -> PgContext
 * 	- PangoFont* -> PgFont
 * 	- PangoFontDescription* -> PgFontDescription
 * 	- PangoFontFamily* -> PgFontFamily
 * 	- PangoFontMap* -> PgFontMap
 * 	- PangoFontMetrics* -> PgFontMetrics
 * 	- PangoFontset* -> PgFontset
 * 	- PangoGlyphString* -> PgGlyphString
 * 	- PangoLanguage* -> PgLanguage
 * 	- PangoMatrix* -> PgMatrix
 * module aliases:
 * local aliases:
 * overrides:
 */

module pango.PgContext;

public  import gtkc.pangotypes;

private import gtkc.pango;
private import glib.ConstructionException;
private import gobject.ObjectG;

private import glib.Str;
private import glib.ListG;
private import pango.PgFont;
private import pango.PgFontMap;
private import pango.PgFontset;
private import pango.PgFontFamily;
private import pango.PgFontMetrics;
private import pango.PgFontDescription;
private import pango.PgLanguage;
private import pango.PgMatrix;
private import pango.PgAttributeList;
private import pango.PgAttributeIterator;
private import pango.PgGlyphString;


private import gobject.ObjectG;

/**
 * The Pango rendering pipeline takes a string of
 * Unicode characters and converts it into glyphs.
 * The functions described in this section accomplish
 * various steps of this process.
 */
public class PgContext : ObjectG
{
	
	/** the main Gtk struct */
	protected PangoContext* pangoContext;
	
	
	/** Get the main Gtk struct */
	public PangoContext* getPgContextStruct()
	{
		return pangoContext;
	}
	
	
	/** the main Gtk struct as a void* */
	protected override void* getStruct()
	{
		return cast(void*)pangoContext;
	}
	
	/**
	 * Sets our main struct and passes it to the parent class
	 */
	public this (PangoContext* pangoContext)
	{
		super(cast(GObject*)pangoContext);
		this.pangoContext = pangoContext;
	}
	
	protected override void setStruct(GObject* obj)
	{
		super.setStruct(obj);
		pangoContext = cast(PangoContext*)obj;
	}
	
	/**
	 * Determines possible line, word, and character breaks
	 * for a string of Unicode text with a single analysis. For most
	 * purposes you may want to use pango_get_log_attrs().
	 * Params:
	 * text =  the text to process
	 * length =  length of text in bytes (may be -1 if text is nul-terminated)
	 * analysis =  PangoAnalysis structure from pango_itemize()
	 * attrs =  an array to store character information in
	 * attrsLen =  size of the array passed as attrs
	 */
	public static void pangoBreak(string text, int length, PangoAnalysis* analysis, PangoLogAttr* attrs, int attrsLen)
	{
		// void pango_break (const gchar *text,  int length,  PangoAnalysis *analysis,  PangoLogAttr *attrs,  int attrs_len);
		pango_break(Str.toStringz(text), length, analysis, attrs, attrsLen);
	}
	
	/**
	 * Pango supports bidirectional text (like Arabic and Hebrew) automatically.
	 * Some applications however, need some help to correctly handle bidirectional
	 * text.
	 *
	 * The PangoDirection type can be used with pango_context_set_base_dir() to
	 * instruct Pango about direction of text, though in most cases Pango detects
	 * that correctly and automatically. The rest of the facilities in this section
	 * are used internally by Pango already, and are provided to help applications
	 * that need more direct control over bidirectional setting of text.
	 */
	
	/**
	 * Breaks a piece of text into segments with consistent
	 * directional level and shaping engine. Each byte of text will
	 * be contained in exactly one of the items in the returned list;
	 * the generated list of items will be in logical order (the start
	 * offsets of the items are ascending).
	 * cached_iter should be an iterator over attrs currently positioned at a
	 * range before or containing start_index; cached_iter will be advanced to
	 * the range covering the position just after start_index + length.
	 * (i.e. if itemizing in a loop, just keep passing in the same cached_iter).
	 * Params:
	 * text = the text to itemize.
	 * startIndex = first byte in text to process
	 * length = the number of bytes (not characters) to process
	 * after start_index.
	 * This must be >= 0.
	 * attrs = the set of attributes that apply to text.
	 * cachedIter = Cached attribute iterator, or NULL. [allow-none]
	 * Returns: a GList of PangoItem structures. The items should be freed using pango_item_free() probably in combination with g_list_foreach(), and the list itself using g_list_free(). [transfer full][element-type Pango.Item]
	 */
	public ListG itemize(string text, int startIndex, int length, PgAttributeList attrs, PgAttributeIterator cachedIter)
	{
		// GList * pango_itemize (PangoContext *context,  const char *text,  int start_index,  int length,  PangoAttrList *attrs,  PangoAttrIterator *cached_iter);
		auto p = pango_itemize(pangoContext, Str.toStringz(text), startIndex, length, (attrs is null) ? null : attrs.getPgAttributeListStruct(), (cachedIter is null) ? null : cachedIter.getPgAttributeIteratorStruct());
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(ListG)(cast(GList*) p);
	}
	
	/**
	 * Like pango_itemize(), but the base direction to use when
	 * computing bidirectional levels (see pango_context_set_base_dir()),
	 * is specified explicitly rather than gotten from the PangoContext.
	 * Since 1.4
	 * Params:
	 * baseDir = base direction to use for bidirectional processing
	 * text = the text to itemize.
	 * startIndex = first byte in text to process
	 * length = the number of bytes (not characters) to process
	 * after start_index. This must be >= 0.
	 * attrs = the set of attributes that apply to text.
	 * cachedIter = Cached attribute iterator, or NULL. [allow-none]
	 * Returns: a GList of PangoItem structures. The items should be freed using pango_item_free() probably in combination with g_list_foreach(), and the list itself using g_list_free(). [transfer full][element-type Pango.Item]
	 */
	public ListG itemizeWithBaseDir(PangoDirection baseDir, string text, int startIndex, int length, PgAttributeList attrs, PgAttributeIterator cachedIter)
	{
		// GList * pango_itemize_with_base_dir (PangoContext *context,  PangoDirection base_dir,  const char *text,  int start_index,  int length,  PangoAttrList *attrs,  PangoAttrIterator *cached_iter);
		auto p = pango_itemize_with_base_dir(pangoContext, baseDir, Str.toStringz(text), startIndex, length, (attrs is null) ? null : attrs.getPgAttributeListStruct(), (cachedIter is null) ? null : cachedIter.getPgAttributeIteratorStruct());
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(ListG)(cast(GList*) p);
	}
	
	/**
	 * From a list of items in logical order and the associated
	 * directional levels, produce a list in visual order.
	 * The original list is unmodified.
	 * Params:
	 * logicalItems = a GList of PangoItem in logical order. [element-type Pango.Item]
	 * Returns: a GList of PangoItem structures in visual order. (Please open a bug if you use this function. It is not a particularly convenient interface, and the code is duplicated elsewhere in Pango for that reason.). [transfer full][element-type Pango.Item]
	 */
	public static ListG reorderItems(ListG logicalItems)
	{
		// GList * pango_reorder_items (GList *logical_items);
		auto p = pango_reorder_items((logicalItems is null) ? null : logicalItems.getListGStruct());
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(ListG)(cast(GList*) p);
	}
	
	/**
	 * Creates a new PangoContext initialized to default values.
	 * This function is not particularly useful as it should always
	 * be followed by a pango_context_set_font_map() call, and the
	 * function pango_font_map_create_context() does these two steps
	 * together and hence users are recommended to use that.
	 * If you are using Pango as part of a higher-level system,
	 * that system may have it's own way of create a PangoContext.
	 * For instance, the GTK+ toolkit has, among others,
	 * gdk_pango_context_get_for_screen(), and
	 * gtk_widget_get_pango_context(). Use those instead.
	 * Throws: ConstructionException GTK+ fails to create the object.
	 */
	public this ()
	{
		// PangoContext * pango_context_new (void);
		auto p = pango_context_new();
		if(p is null)
		{
			throw new ConstructionException("null returned by pango_context_new()");
		}
		this(cast(PangoContext*) p);
	}
	
	/**
	 * Forces a change in the context, which will cause any PangoLayout
	 * using this context to re-layout.
	 * This function is only useful when implementing a new backend
	 * for Pango, something applications won't do. Backends should
	 * call this function if they have attached extra data to the context
	 * and such data is changed.
	 * Since 1.32.4
	 */
	public void changed()
	{
		// void pango_context_changed (PangoContext *context);
		pango_context_changed(pangoContext);
	}
	
	/**
	 * Returns the current serial number of context. The serial number is
	 * initialized to an small number larger than zero when a new context
	 * is created and is increased whenever the context is changed using any
	 * of the setter functions, or the PangoFontMap it uses to find fonts has
	 * changed. The serial may wrap, but will never have the value 0. Since it
	 * can wrap, never compare it with "less than", always use "not equals".
	 * This can be used to automatically detect changes to a PangoContext, and
	 * is only useful when implementing objects that need update when their
	 * PangoContext changes, like PangoLayout.
	 * Since 1.32.4
	 * Returns: The current serial number of context.
	 */
	public uint getSerial()
	{
		// guint pango_context_get_serial (PangoContext *context);
		return pango_context_get_serial(pangoContext);
	}
	
	/**
	 * Sets the font map to be searched when fonts are looked-up in this context.
	 * This is only for internal use by Pango backends, a PangoContext obtained
	 * via one of the recommended methods should already have a suitable font map.
	 * Params:
	 * fontMap = the PangoFontMap to set.
	 */
	public void setFontMap(PgFontMap fontMap)
	{
		// void pango_context_set_font_map (PangoContext *context,  PangoFontMap *font_map);
		pango_context_set_font_map(pangoContext, (fontMap is null) ? null : fontMap.getPgFontMapStruct());
	}
	
	/**
	 * Gets the PangoFontmap used to look up fonts for this context.
	 * Since 1.6
	 * Returns: the font map for the PangoContext. This value is owned by Pango and should not be unreferenced. [transfer none]
	 */
	public PgFontMap getFontMap()
	{
		// PangoFontMap * pango_context_get_font_map (PangoContext *context);
		auto p = pango_context_get_font_map(pangoContext);
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgFontMap)(cast(PangoFontMap*) p);
	}
	
	/**
	 * Retrieve the default font description for the context.
	 * Returns: a pointer to the context's default font description. This value must not be modified or freed. [transfer none]
	 */
	public PgFontDescription getFontDescription()
	{
		// PangoFontDescription * pango_context_get_font_description  (PangoContext *context);
		auto p = pango_context_get_font_description(pangoContext);
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgFontDescription)(cast(PangoFontDescription*) p);
	}
	
	/**
	 * Set the default font description for the context
	 * Params:
	 * desc = the new pango font description
	 */
	public void setFontDescription(PgFontDescription desc)
	{
		// void pango_context_set_font_description (PangoContext *context,  const PangoFontDescription *desc);
		pango_context_set_font_description(pangoContext, (desc is null) ? null : desc.getPgFontDescriptionStruct());
	}
	
	/**
	 * Retrieves the global language tag for the context.
	 * Returns: the global language tag.
	 */
	public PgLanguage getLanguage()
	{
		// PangoLanguage * pango_context_get_language (PangoContext *context);
		auto p = pango_context_get_language(pangoContext);
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgLanguage)(cast(PangoLanguage*) p);
	}
	
	/**
	 * Sets the global language tag for the context. The default language
	 * for the locale of the running process can be found using
	 * pango_language_get_default().
	 * Params:
	 * language = the new language tag.
	 */
	public void setLanguage(PgLanguage language)
	{
		// void pango_context_set_language (PangoContext *context,  PangoLanguage *language);
		pango_context_set_language(pangoContext, (language is null) ? null : language.getPgLanguageStruct());
	}
	
	/**
	 * Retrieves the base direction for the context. See
	 * pango_context_set_base_dir().
	 * Returns: the base direction for the context.
	 */
	public PangoDirection getBaseDir()
	{
		// PangoDirection pango_context_get_base_dir (PangoContext *context);
		return pango_context_get_base_dir(pangoContext);
	}
	
	/**
	 * Sets the base direction for the context.
	 * The base direction is used in applying the Unicode bidirectional
	 * algorithm; if the direction is PANGO_DIRECTION_LTR or
	 * PANGO_DIRECTION_RTL, then the value will be used as the paragraph
	 * direction in the Unicode bidirectional algorithm. A value of
	 * PANGO_DIRECTION_WEAK_LTR or PANGO_DIRECTION_WEAK_RTL is used only
	 * for paragraphs that do not contain any strong characters themselves.
	 * Params:
	 * direction = the new base direction
	 */
	public void setBaseDir(PangoDirection direction)
	{
		// void pango_context_set_base_dir (PangoContext *context,  PangoDirection direction);
		pango_context_set_base_dir(pangoContext, direction);
	}
	
	/**
	 * Retrieves the base gravity for the context. See
	 * pango_context_set_base_gravity().
	 * Since 1.16
	 * Returns: the base gravity for the context.
	 */
	public PangoGravity getBaseGravity()
	{
		// PangoGravity pango_context_get_base_gravity (PangoContext *context);
		return pango_context_get_base_gravity(pangoContext);
	}
	
	/**
	 * Sets the base gravity for the context.
	 * The base gravity is used in laying vertical text out.
	 * Since 1.16
	 * Params:
	 * gravity = the new base gravity
	 */
	public void setBaseGravity(PangoGravity gravity)
	{
		// void pango_context_set_base_gravity (PangoContext *context,  PangoGravity gravity);
		pango_context_set_base_gravity(pangoContext, gravity);
	}
	
	/**
	 * Retrieves the gravity for the context. This is similar to
	 * pango_context_get_base_gravity(), except for when the base gravity
	 * is PANGO_GRAVITY_AUTO for which pango_gravity_get_for_matrix() is used
	 * to return the gravity from the current context matrix.
	 * Since 1.16
	 * Returns: the resolved gravity for the context.
	 */
	public PangoGravity getGravity()
	{
		// PangoGravity pango_context_get_gravity (PangoContext *context);
		return pango_context_get_gravity(pangoContext);
	}
	
	/**
	 * Retrieves the gravity hint for the context. See
	 * pango_context_set_gravity_hint() for details.
	 * Since 1.16
	 * Returns: the gravity hint for the context.
	 */
	public PangoGravityHint getGravityHint()
	{
		// PangoGravityHint pango_context_get_gravity_hint (PangoContext *context);
		return pango_context_get_gravity_hint(pangoContext);
	}
	
	/**
	 * Sets the gravity hint for the context.
	 * The gravity hint is used in laying vertical text out, and is only relevant
	 * if gravity of the context as returned by pango_context_get_gravity()
	 * is set PANGO_GRAVITY_EAST or PANGO_GRAVITY_WEST.
	 * Since 1.16
	 * Params:
	 * hint = the new gravity hint
	 */
	public void setGravityHint(PangoGravityHint hint)
	{
		// void pango_context_set_gravity_hint (PangoContext *context,  PangoGravityHint hint);
		pango_context_set_gravity_hint(pangoContext, hint);
	}
	
	/**
	 * Gets the transformation matrix that will be applied when
	 * rendering with this context. See pango_context_set_matrix().
	 * Since 1.6
	 * Returns: the matrix, or NULL if no matrix has been set (which is the same as the identity matrix). The returned matrix is owned by Pango and must not be modified or freed.
	 */
	public PgMatrix getMatrix()
	{
		// const PangoMatrix * pango_context_get_matrix (PangoContext *context);
		auto p = pango_context_get_matrix(pangoContext);
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgMatrix)(cast(PangoMatrix*) p);
	}
	
	/**
	 * Sets the transformation matrix that will be applied when rendering
	 * with this context. Note that reported metrics are in the user space
	 * coordinates before the application of the matrix, not device-space
	 * coordinates after the application of the matrix. So, they don't scale
	 * with the matrix, though they may change slightly for different
	 * matrices, depending on how the text is fit to the pixel grid.
	 * Since 1.6
	 * Params:
	 * matrix = a PangoMatrix, or NULL to unset any existing
	 * matrix. (No matrix set is the same as setting the identity matrix.). [allow-none]
	 */
	public void setMatrix(PgMatrix matrix)
	{
		// void pango_context_set_matrix (PangoContext *context,  const PangoMatrix *matrix);
		pango_context_set_matrix(pangoContext, (matrix is null) ? null : matrix.getPgMatrixStruct());
	}
	
	/**
	 * Loads the font in one of the fontmaps in the context
	 * that is the closest match for desc.
	 * Params:
	 * desc = a PangoFontDescription describing the font to load
	 * Returns: the newly allocated PangoFont that was loaded, or NULL if no font matched. [transfer full]
	 */
	public PgFont loadFont(PgFontDescription desc)
	{
		// PangoFont * pango_context_load_font (PangoContext *context,  const PangoFontDescription *desc);
		auto p = pango_context_load_font(pangoContext, (desc is null) ? null : desc.getPgFontDescriptionStruct());
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgFont)(cast(PangoFont*) p);
	}
	
	/**
	 * Load a set of fonts in the context that can be used to render
	 * a font matching desc.
	 * Params:
	 * desc = a PangoFontDescription describing the fonts to load
	 * language = a PangoLanguage the fonts will be used for
	 * Returns: the newly allocated PangoFontset loaded, or NULL if no font matched. [transfer full]
	 */
	public PgFontset loadFontset(PgFontDescription desc, PgLanguage language)
	{
		// PangoFontset * pango_context_load_fontset (PangoContext *context,  const PangoFontDescription *desc,  PangoLanguage *language);
		auto p = pango_context_load_fontset(pangoContext, (desc is null) ? null : desc.getPgFontDescriptionStruct(), (language is null) ? null : language.getPgLanguageStruct());
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgFontset)(cast(PangoFontset*) p);
	}
	
	/**
	 * Get overall metric information for a particular font
	 * description. Since the metrics may be substantially different for
	 * different scripts, a language tag can be provided to indicate that
	 * the metrics should be retrieved that correspond to the script(s)
	 * used by that language.
	 * The PangoFontDescription is interpreted in the same way as
	 * by pango_itemize(), and the family name may be a comma separated
	 * list of figures. If characters from multiple of these families
	 * would be used to render the string, then the returned fonts would
	 * be a composite of the metrics for the fonts loaded for the
	 * individual families.
	 * Params:
	 * desc = a PangoFontDescription structure. NULL means that the
	 * font description from the context will be used. [allow-none]
	 * language = language tag used to determine which script to get
	 * the metrics for. NULL means that the language tag from the context
	 * will be used. If no language tag is set on the context, metrics
	 * for the default language (as determined by pango_language_get_default())
	 * will be returned. [allow-none]
	 * Returns: a PangoFontMetrics object. The caller must call pango_font_metrics_unref() when finished using the object.
	 */
	public PgFontMetrics getMetrics(PgFontDescription desc, PgLanguage language)
	{
		// PangoFontMetrics * pango_context_get_metrics (PangoContext *context,  const PangoFontDescription *desc,  PangoLanguage *language);
		auto p = pango_context_get_metrics(pangoContext, (desc is null) ? null : desc.getPgFontDescriptionStruct(), (language is null) ? null : language.getPgLanguageStruct());
		
		if(p is null)
		{
			return null;
		}
		
		return ObjectG.getDObject!(PgFontMetrics)(cast(PangoFontMetrics*) p);
	}
	
	/**
	 * List all families for a context.
	 * Params:
	 * families = location to store a pointer to
	 * an array of PangoFontFamily *. This array should be freed
	 * with g_free(). [out][array length=n_families][transfer container]
	 */
	public void listFamilies(out PgFontFamily[] families)
	{
		// void pango_context_list_families (PangoContext *context,  PangoFontFamily ***families,  int *n_families);
		PangoFontFamily** outfamilies = null;
		int nFamilies;
		
		pango_context_list_families(pangoContext, &outfamilies, &nFamilies);
		
		
		families = new PgFontFamily[nFamilies];
		for(int i = 0; i < nFamilies; i++)
		{
			families[i] = ObjectG.getDObject!(PgFontFamily)(cast(PangoFontFamily*) outfamilies[i]);
		}
	}
	
	/**
	 * Computes a PangoLogAttr for each character in text. The log_attrs
	 * array must have one PangoLogAttr for each position in text; if
	 * text contains N characters, it has N+1 positions, including the
	 * last position at the end of the text. text should be an entire
	 * paragraph; logical attributes can't be computed without context
	 * (for example you need to see spaces on either side of a word to know
	 * the word is a word).
	 * Params:
	 * text = text to process
	 * length = length in bytes of text
	 * level = embedding level, or -1 if unknown
	 * language = language tag
	 * logAttrs = array with one PangoLogAttr
	 * per character in text, plus one extra, to be filled in. [array length=attrs_len]
	 * attrsLen = length of log_attrs array
	 */
	public static void getLogAttrs(string text, int length, int level, PgLanguage language, PangoLogAttr* logAttrs, int attrsLen)
	{
		// void pango_get_log_attrs (const char *text,  int length,  int level,  PangoLanguage *language,  PangoLogAttr *log_attrs,  int attrs_len);
		pango_get_log_attrs(Str.toStringz(text), length, level, (language is null) ? null : language.getPgLanguageStruct(), logAttrs, attrsLen);
	}
	
	/**
	 * Locates a paragraph boundary in text. A boundary is caused by
	 * delimiter characters, such as a newline, carriage return, carriage
	 * return-newline pair, or Unicode paragraph separator character. The
	 * index of the run of delimiters is returned in
	 * paragraph_delimiter_index. The index of the start of the paragraph
	 * (index after all delimiters) is stored in next_paragraph_start.
	 * If no delimiters are found, both paragraph_delimiter_index and
	 * next_paragraph_start are filled with the length of text (an index one
	 * off the end).
	 * Params:
	 * text = UTF-8 text
	 * length = length of text in bytes, or -1 if nul-terminated
	 * paragraphDelimiterIndex = return location for index of
	 * delimiter. [out]
	 * nextParagraphStart = return location for start of next
	 * paragraph. [out]
	 */
	public static void findParagraphBoundary(string text, int length, out int paragraphDelimiterIndex, out int nextParagraphStart)
	{
		// void pango_find_paragraph_boundary (const gchar *text,  gint length,  gint *paragraph_delimiter_index,  gint *next_paragraph_start);
		pango_find_paragraph_boundary(Str.toStringz(text), length, &paragraphDelimiterIndex, &nextParagraphStart);
	}
	
	/**
	 * This is the default break algorithm, used if no language
	 * engine overrides it. Normally you should use pango_break()
	 * instead. Unlike pango_break(),
	 * analysis can be NULL, but only do that if you know what
	 * you're doing. If you need an analysis to pass to pango_break(),
	 * you need to pango_itemize(). In most cases however you should
	 * simply use pango_get_log_attrs().
	 * Params:
	 * text = text to break
	 * length = length of text in bytes (may be -1 if text is nul-terminated)
	 * analysis = a PangoAnalysis for the text
	 * attrs = logical attributes to fill in
	 * attrsLen = size of the array passed as attrs
	 */
	public static void defaultBreak(string text, int length, PangoAnalysis* analysis, PangoLogAttr* attrs, int attrsLen)
	{
		// void pango_default_break (const gchar *text,  int length,  PangoAnalysis *analysis,  PangoLogAttr *attrs,  int attrs_len);
		pango_default_break(Str.toStringz(text), length, analysis, attrs, attrsLen);
	}
	
	/**
	 * Given a segment of text and the corresponding
	 * PangoAnalysis structure returned from pango_itemize(),
	 * convert the characters into glyphs. You may also pass
	 * in only a substring of the item from pango_itemize().
	 * It is recommended that you use pango_shape_full() instead, since
	 * that API allows for shaping interaction happening across text item
	 * boundaries.
	 * Params:
	 * text = the text to process
	 * length = the length (in bytes) of text
	 * analysis = PangoAnalysis structure from pango_itemize()
	 * glyphs = glyph string in which to store results
	 */
	public static void shape(string text, int length, PangoAnalysis* analysis, PgGlyphString glyphs)
	{
		// void pango_shape (const gchar *text,  gint length,  const PangoAnalysis *analysis,  PangoGlyphString *glyphs);
		pango_shape(Str.toStringz(text), length, analysis, (glyphs is null) ? null : glyphs.getPgGlyphStringStruct());
	}
	
	/**
	 * Given a segment of text and the corresponding
	 * PangoAnalysis structure returned from pango_itemize(),
	 * convert the characters into glyphs. You may also pass
	 * in only a substring of the item from pango_itemize().
	 * This is similar to pango_shape(), except it also can optionally take
	 * the full paragraph text as input, which will then be used to perform
	 * certain cross-item shaping interactions. If you have access to the broader
	 * text of which item_text is part of, provide the broader text as
	 * paragraph_text. If paragraph_text is NULL, item text is used instead.
	 * Since 1.32
	 * Params:
	 * itemText = valid UTF-8 text to shape.
	 * paragraphText = (allow-none) text of the paragraph (see details). May be NULL.
	 * analysis = PangoAnalysis structure from pango_itemize().
	 * glyphs = glyph string in which to store results.
	 */
	public static void shapeFull(string itemText, string paragraphText, PangoAnalysis* analysis, PgGlyphString glyphs)
	{
		// void pango_shape_full (const gchar *item_text,  gint item_length,  const gchar *paragraph_text,  gint paragraph_length,  const PangoAnalysis *analysis,  PangoGlyphString *glyphs);
		pango_shape_full(cast(char*)itemText.ptr, cast(int) itemText.length, cast(char*)paragraphText.ptr, cast(int) paragraphText.length, analysis, (glyphs is null) ? null : glyphs.getPgGlyphStringStruct());
	}
	
	/**
	 * Determines the inherent direction of a character; either
	 * PANGO_DIRECTION_LTR, PANGO_DIRECTION_RTL, or
	 * PANGO_DIRECTION_NEUTRAL.
	 * This function is useful to categorize characters into left-to-right
	 * letters, right-to-left letters, and everything else. If full
	 * Unicode bidirectional type of a character is needed,
	 * pango_bidi_type_for_gunichar() can be used instead.
	 * Params:
	 * ch = a Unicode character
	 * Returns: the direction of the character.
	 */
	public static PangoDirection unicharDirection(gunichar ch)
	{
		// PangoDirection pango_unichar_direction (gunichar ch);
		return pango_unichar_direction(ch);
	}
	
	/**
	 * Searches a string the first character that has a strong
	 * direction, according to the Unicode bidirectional algorithm.
	 * Since 1.4
	 * Params:
	 * text = the text to process
	 * length = length of text in bytes (may be -1 if text is nul-terminated)
	 * Returns: The direction corresponding to the first strong character. If no such character is found, then PANGO_DIRECTION_NEUTRAL is returned.
	 */
	public static PangoDirection findBaseDir(string text, int length)
	{
		// PangoDirection pango_find_base_dir (const gchar *text,  gint length);
		return pango_find_base_dir(Str.toStringz(text), length);
	}
	
	/**
	 * Warning
	 * pango_get_mirror_char is deprecated and should not be used in newly-written code.
	 * If ch has the Unicode mirrored property and there is another Unicode
	 * character that typically has a glyph that is the mirror image of ch's
	 * glyph, puts that character in the address pointed to by mirrored_ch.
	 * Use g_unichar_get_mirror_char() instead; the docs for that function
	 * provide full details.
	 * Params:
	 * ch = a Unicode character
	 * mirroredCh = location to store the mirrored character
	 * Returns: TRUE if ch has a mirrored character and mirrored_ch is filled in, FALSE otherwise
	 */
	public static int getMirrorChar(gunichar ch, gunichar* mirroredCh)
	{
		// gboolean pango_get_mirror_char (gunichar ch,  gunichar *mirrored_ch);
		return pango_get_mirror_char(ch, mirroredCh);
	}
	
	/**
	 * Determines the normative bidirectional character type of a
	 * character, as specified in the Unicode Character Database.
	 * A simplified version of this function is available as
	 * pango_unichar_get_direction().
	 * Since 1.22
	 * Params:
	 * ch = a Unicode character
	 * Returns: the bidirectional character type, as used in the Unicode bidirectional algorithm.
	 */
	public static PangoBidiType bidiTypeForUnichar(gunichar ch)
	{
		// PangoBidiType pango_bidi_type_for_unichar (gunichar ch);
		return pango_bidi_type_for_unichar(ch);
	}
}