ref: 72a4653aaba2936661596601b91a61a2c13109ae
dir: /textscreen/txt_radiobutton.h/
//
// Copyright(C) 2005-2014 Simon Howard
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program 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 General Public License for more details.
//
#ifndef TXT_RADIOBUTTON_H
#define TXT_RADIOBUTTON_H
/**
* @file txt_radiobutton.h
*
* Radio button widget.
*/
/**
* A radio button widget.
*
* Radio buttons are typically used in groups, to allow a value to be
* selected from a range of options. Each radio button corresponds
* to a particular option that may be selected. A radio button
* has an indicator to indicate whether it is the currently-selected
* value, and a text label.
*
* Internally, a radio button tracks an integer variable that may take
* a range of different values. Each radio button has a particular
* value associated with it; if the variable is equal to that value,
* the radio button appears selected. If a radio button is pressed
* by the user through the GUI, the variable is set to its value.
*
* When a radio button is selected, the "selected" signal is emitted.
*/
typedef struct txt_radiobutton_s txt_radiobutton_t;
#include "txt_widget.h"
struct txt_radiobutton_s
{
txt_widget_t widget;
char *label;
int *variable;
int value;
};
/**
* Create a new radio button widget.
*
* @param label The label to display next to the radio button
* (UTF-8 format).
* @param variable Pointer to the variable tracking whether this
* radio button is selected.
* @param value If the variable is equal to this value, the
* radio button appears selected.
* @return Pointer to the new radio button widget.
*/
txt_radiobutton_t *TXT_NewRadioButton(const char *label, int *variable, int value);
/**
* Set the label on a radio button.
*
* @param radiobutton The radio button.
* @param value The new label (UTF-8 format).
*/
void TXT_SetRadioButtonLabel(txt_radiobutton_t *radiobutton, const char *value);
#endif /* #ifndef TXT_RADIOBUTTON_H */