Gtk::TextMark Class Reference

Typedefed as Gtk::TextBuffer::Mark. More...

Inheritance diagram for Gtk::TextMark:

Collaboration diagram for Gtk::TextMark:

List of all members.

Public Member Functions
virtual	~TextMark ()
GtkTextMark*	gobj ()
	Provides access to the underlying C GObject.
const GtkTextMark*	gobj () const
	Provides access to the underlying C GObject.
GtkTextMark*	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
void	set_visible (bool setting=true)
	Sets the visibility of mark; the insertion point is normally visible, i.e. you can see it as a vertical bar.
bool	get_visible () const
	Returns true if the mark is visible (i.e. a cursor is displayed for it).
Glib::ustring	get_name () const
	Returns the mark name; returns 0 for anonymous marks.
bool	get_deleted () const
	Returns true if the mark has been removed from its buffer with Gtk::TextBuffer::delete_mark().
Glib::RefPtr< TextBuffer >	get_buffer ()
	Gets the buffer this mark is located inside, or 0 if the mark is deleted.
Glib::RefPtr< const TextBuffer >	get_buffer () const
	Gets the buffer this mark is located inside, or 0 if the mark is deleted.
bool	get_left_gravity () const
	Determines whether the mark has left gravity.
TextIter	get_iter ()
Glib::PropertyProxy_ReadOnly < Glib::ustring >	property_name () const
	Mark name.
Glib::PropertyProxy_ReadOnly < bool >	property_left_gravity () const
	Whether the mark has left gravity.
Static Public Member Functions
static Glib::RefPtr< TextMark >	create (bool left_gravity=true)
	Creates an anoymous text mark.
static Glib::RefPtr< TextMark >	create (const Glib::ustring& name, bool left_gravity=true)
	Creates a text mark.
Protected Member Functions
	TextMark (bool left_gravity=true)
	Creates an anoymous text mark.
	TextMark (const Glib::ustring& name, bool left_gravity=true)
	Creates a text mark.
Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gtk::TextMark >	wrap (GtkTextMark* object, bool take_copy=false)
	A Glib::wrap() method for this object.

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Detailed Description

Typedefed as Gtk::TextBuffer::Mark.

A position in the buffer, preserved across buffer modifications.

A Mark is like a bookmark in a text buffer; it preserves a position in the text. Unlike iterators, marks remain valid across buffer mutations, because their behavior is defined when text is inserted or deleted. When text containing a mark is deleted, the mark remains in the position originally occupied by the deleted text. When text is inserted at a mark, a mark with left gravity will be moved to the beginning of the newly-inserted text, and a mark with right gravity will be moved to the end. The standard text cursor in left-to-right languages is a mark with right gravity, because it stays to the right of inserted text.

Like tags, marks can be either named or anonymous. There are two marks built-in to Gtk::TextBuffer; these are named "insert" and "selection_bound" and refer to the insertion point and the boundary of the selection which is not the insertion point, respectively. If no text is selected, these two marks will be in the same position. You can manipulate what is selected and where the cursor appears by moving these marks around.

"left" and "right" here refer to logical direction (left is the toward the start of the buffer); in some languages such as Hebrew the logically-leftmost text is not actually on the left when displayed.

You can convert the mark to an iterator using Gtk::TextBuffer::get_iter_at_mark().

Marks can be deleted from the buffer at any time with Gtk::TextBuffer::delete_mark(). Once deleted from the buffer, a mark is essentially useless.

Marks optionally have names; these can be convenient to avoid passing the Gtk::TextBuffer::Mark object around.

Marks are typically created using the Gtk::TextBuffer::create_mark() function.

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Constructor & Destructor Documentation

virtual Gtk::TextMark::~TextMark

(

)

[virtual]

Gtk::TextMark::TextMark

(

bool

left_gravity = true

)

[explicit, protected]

Creates an anoymous text mark.

Add it to a buffer using Gtk::TextBuffer::add_mark(). If a mark has left gravity, and text is inserted at the mark's current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (left_gravity = false), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you're typing).

Parameters:

name	mark name.
left_gravity	Whether the mark should have left gravity.

Since gtkmm 2.12:

Gtk::TextMark::TextMark	(	const Glib::ustring &	name,
		bool	left_gravity = true
	)		[explicit, protected]

Creates a text mark.

Add it to a buffer using Gtk::TextBuffer::add_mark(). The mark can be retrieved by name using Gtk::TextBuffer::get_mark(). If a mark has left gravity, and text is inserted at the mark's current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (left_gravity = false), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you're typing).

Parameters:

name	mark name.
left_gravity	Whether the mark should have left gravity.

Since gtkmm 2.12:

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Member Function Documentation

static Glib::RefPtr<TextMark> Gtk::TextMark::create

(

bool

left_gravity = true

)

[static]

Creates an anoymous text mark.

Add it to a buffer using Gtk::TextBuffer::add_mark(). If a mark has left gravity, and text is inserted at the mark's current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (left_gravity = false), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you're typing).

Parameters:

name	mark name.
left_gravity	Whether the mark should have left gravity.

Returns:

A RefPtr to a new text mark.

Since gtkmm 2.12:

static Glib::RefPtr<TextMark> Gtk::TextMark::create	(	const Glib::ustring &	name,
		bool	left_gravity = true
	)		[static]

Creates a text mark.

Add it to a buffer using Gtk::TextBuffer::add_mark(). The mark can be retrieved by name using Gtk::TextBuffer::get_mark(). If a mark has left gravity, and text is inserted at the mark's current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (left_gravity = false), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you're typing).

Parameters:

name	mark name.
left_gravity	Whether the mark should have left gravity.

Returns:

A RefPtr to a new text mark.

Since gtkmm 2.12:

Glib::RefPtr<TextBuffer> Gtk::TextMark::get_buffer

(

)

Gets the buffer this mark is located inside, or 0 if the mark is deleted.

Returns:

The mark's Gtk::TextBuffer.

Glib::RefPtr<const TextBuffer> Gtk::TextMark::get_buffer

(

)

const

Gets the buffer this mark is located inside, or 0 if the mark is deleted.

Returns:

The mark's Gtk::TextBuffer.

bool Gtk::TextMark::get_deleted

(

)

const

Returns true if the mark has been removed from its buffer with Gtk::TextBuffer::delete_mark().

See Gtk::TextBuffer::add_mark() for a way to add it to a buffer again.

Returns:

Whether the mark is deleted.

TextIter Gtk::TextMark::get_iter

(

)

bool Gtk::TextMark::get_left_gravity

(

)

const

Determines whether the mark has left gravity.

Returns:

true if the mark has left gravity, false otherwise.

Glib::ustring Gtk::TextMark::get_name

(

)

const

Returns the mark name; returns 0 for anonymous marks.

Returns:

Mark name.

bool Gtk::TextMark::get_visible

(

)

const

Returns true if the mark is visible (i.e. a cursor is displayed for it).

Returns:

true if visible.

const GtkTextMark* Gtk::TextMark::gobj

(

)

const [inline]

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GtkTextMark* Gtk::TextMark::gobj

(

)

[inline]

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GtkTextMark* Gtk::TextMark::gobj_copy

(

)

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

Glib::PropertyProxy_ReadOnly<bool> Gtk::TextMark::property_left_gravity

(

)

const

Whether the mark has left gravity.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:

A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly<Glib::ustring> Gtk::TextMark::property_name

(

)

const

Mark name.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:

A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

void Gtk::TextMark::set_visible

(

bool

setting = true

)

Sets the visibility of mark; the insertion point is normally visible, i.e. you can see it as a vertical bar.

Also, the text widget uses a visible mark to indicate where a drop will occur when dragging-and-dropping text. Most other marks are not visible. Marks are not visible by default.

Parameters:

setting

Visibility of mark.

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Friends And Related Function Documentation

Glib::RefPtr< Gtk::TextMark > wrap	(	GtkTextMark *	object,
		bool	take_copy = false
	)		[related]

A Glib::wrap() method for this object.

Parameters:

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns:

A C++ instance that wraps this C instance.

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

• gtkmm/textmark.h