cadabra::CodeInput Class Reference

Description

A text cell editor widget with support for editing Python and LaTeX.

CodeInput is essentially a TextView with some additional i/o logic.

#include <CodeInput.hh>

Inheritance diagram for cadabra::CodeInput:

Classes
class	exp_input_tv
	The actual text widget used by CodeInput. More...

Public Types
using	Prefs = cadabra::DocumentThread::Prefs

Public Member Functions
	CodeInput (DTree::iterator, Glib::RefPtr< Gtk::TextBuffer >, double scale, const Prefs &prefs)
	Initialise with existing TextBuffer and a pointer to the Datacell corresponding to this CodeInput widget. More...
	CodeInput (DTree::iterator, const std::string &, double scale, const Prefs &prefs)
	Initialise with a new TextBuffer (to be created by CodeInput), filling it with the content of the given string. More...
void	set_font_size (int num)
	Set the font size, 0 being default, negative smaller, positive larger. More...
void	enable_highlighting (DataCell::CellType cell_type, const Prefs &prefs)
void	disable_highlighting ()
void	relay_cursor_pos (std::function< void(int, int)> callback)
bool	handle_button_press (GdkEventButton *)
	Handle mouse buttons. More...
void	handle_insert (const Gtk::TextIter &pos, const Glib::ustring &text, int bytes)
	Handle an insert event, which can consist of one or more inserted characters. More...
void	handle_erase (const Gtk::TextIter &start, const Gtk::TextIter &end)
	Handle an erase event. More...
void	update_buffer ()
	Ensure that the visual representation matches the DTree cell. More...
void	slice_cell (std::string &before, std::string &after)
	Return two strings corresponding to the text before and after the current cursor position. More...

Public Attributes
Glib::RefPtr< Gtk::TextBuffer >	buffer
	We cannot edit the content of the DataCell directly, because Gtk needs a Gtk::TextBuffer. More...
exp_input_tv	edit

Private Member Functions
void	init (const Prefs &prefs)
void	highlight_python ()
void	highlight_latex ()

Private Attributes
sigc::connection	hl_conn

Member Typedef Documentation

Prefs

using cadabra::CodeInput::Prefs = cadabra::DocumentThread::Prefs

Constructor & Destructor Documentation

CodeInput() [1/2]

CodeInput::CodeInput	(	DTree::iterator	it,
		Glib::RefPtr< Gtk::TextBuffer >	tb,
		double	scale,
		const Prefs &	prefs
	)

Initialise with existing TextBuffer and a pointer to the Datacell corresponding to this CodeInput widget.

CodeInput is not allowed to modify this DataCell directly, but can read properties from it (e.g. in order to know when to display a 'busy' indicator). The scale parameter refers to hdpi scaling.

CodeInput() [2/2]

CodeInput::CodeInput	(	DTree::iterator	it,
		const std::string &	txt,
		double	scale,
		const Prefs &	prefs
	)

Initialise with a new TextBuffer (to be created by CodeInput), filling it with the content of the given string.

Member Function Documentation

disable_highlighting()

void CodeInput::disable_highlighting

(

)

enable_highlighting()

void CodeInput::enable_highlighting	(	DataCell::CellType	cell_type,
		const Prefs &	prefs
	)

handle_button_press()

bool CodeInput::handle_button_press

(

GdkEventButton *

button

)

Handle mouse buttons.

handle_erase()

void CodeInput::handle_erase	(	const Gtk::TextIter &	start,
		const Gtk::TextIter &	end
	)

Handle an erase event.

This function will just massage that data and then feed it through to the notebook window class by emitting a signal on content_erase (done like this to separate DTree modification from the widget).

handle_insert()

void CodeInput::handle_insert	(	const Gtk::TextIter &	pos,
		const Glib::ustring &	text,
		int	bytes
	)

Handle an insert event, which can consist of one or more inserted characters.

This function will just massage that data and then feed it through to the notebook window class by emitting a signal on content_insert (done like this to separate DTree modification from the widget).

highlight_latex()

void CodeInput::highlight_latex ( )

private

highlight_python()

void CodeInput::highlight_python ( )

private

init()

void CodeInput::init ( const Prefs &  prefs )

private

relay_cursor_pos()

void CodeInput::relay_cursor_pos

(

std::function< void(int, int)>

callback

)

set_font_size()

void CodeInput::set_font_size

(

int

num

)

Set the font size, 0 being default, negative smaller, positive larger.

slice_cell()

void CodeInput::slice_cell	(	std::string &	before,
		std::string &	after
	)

Return two strings corresponding to the text before and after the current cursor position.

update_buffer()

void CodeInput::update_buffer

(

)

Ensure that the visual representation matches the DTree cell.

Member Data Documentation

buffer

Glib::RefPtr<Gtk::TextBuffer> cadabra::CodeInput::buffer

We cannot edit the content of the DataCell directly, because Gtk needs a Gtk::TextBuffer.

However, the CodeInput widgets corresponding to a single DataCell all share their TextBuffer.

edit

exp_input_tv cadabra::CodeInput::edit

hl_conn

sigc::connection cadabra::CodeInput::hl_conn

private

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

• frontend/gtkmm/CodeInput.hh
• frontend/gtkmm/CodeInput.cc