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/* text.c: simple text entry widget
Copyright (c) 2002-2005 Philip Kendall
$Id: text.c 4103 2009-11-21 10:16:36Z fredm $
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.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#include <config.h>
#include <string.h>
#include <ctype.h>
#include "widget_internals.h"
char *widget_text_text = NULL; /* What we return the text in */
static const char *title; /* The window title */
static widget_text_input_allow allow;
#define WIDGET_TEXT_LENGTH 64
static char text[WIDGET_TEXT_LENGTH]; /* The current entry text */
static int widget_text_draw_text( void );
static void delete_character( void );
static void append_character( char c );
int
widget_text_draw( void *data )
{
widget_text_t* text_data = data;
if( data ) {
title = text_data->title;
allow = text_data->allow;
snprintf( text, sizeof( text ), "%s", text_data->text );
}
widget_dialog_with_border( 1, 2, 30, 3 );
widget_printstring( 10, 16, WIDGET_COLOUR_TITLE, title );
widget_printstring_right( 12, 28, 5, "[" );
widget_printstring( 244, 28, 5, "]" );
widget_display_lines( 2, 3 );
return widget_text_draw_text();
}
static int
widget_text_draw_text( void )
{
int width;
const char *tptr;
widget_rectangle( 12, 28, 232, 8, WIDGET_COLOUR_BACKGROUND );
tptr = text - 1;
do {
width = widget_stringwidth (++tptr);
} while (width > 28 * 8 - 4);
if( tptr != text )
widget_rectangle( 14, 29, 1, 6, 5 );
widget_printstring( 16, 28, WIDGET_COLOUR_FOREGROUND, tptr );
widget_rectangle( 17 + width, 35, 4, 1, 5 );
widget_display_rasters( 28, 8 );
return 0;
}
void
widget_text_keyhandler( input_key key )
{
switch( key ) {
case INPUT_KEY_BackSpace: /* Backspace generates DEL which is Caps + 0 */
delete_character(); widget_text_draw_text();
return;
case INPUT_KEY_Escape:
widget_end_widget( WIDGET_FINISHED_CANCEL );
return;
case INPUT_KEY_Return:
case INPUT_KEY_KP_Enter:
widget_end_widget( WIDGET_FINISHED_OK );
return;
default: /* Keep gcc happy */
break;
}
/* Input validation.
* We rely on various INPUT_KEY_* being mapped directly onto ASCII.
*/
/* FIXME: we *don't* want keypresses filtered through the input layer */
/* First, return if the character isn't printable ASCII. */
if( key < ' ' || key > '~' ) return;
/* Return if the key isn't valid. */
switch( allow ) {
case WIDGET_INPUT_ASCII:
break;
case WIDGET_INPUT_DIGIT:
if( !isdigit( key ) ) return;
break;
case WIDGET_INPUT_ALPHA:
if( !isalpha( key ) ) return;
break;
case WIDGET_INPUT_ALNUM:
if( !isdigit( key ) && !isalpha( key ) ) return;
break;
}
/* If we've got this far, we have a valid key */
append_character( key );
widget_text_draw_text();
}
static void
delete_character( void )
{
size_t length = strlen( text );
if( length ) text[ length - 1 ] = '\0';
}
static void
append_character( char c )
{
size_t length = strlen( text );
if( length < 23 ) {
text[ length ] = c; text[ length + 1 ] = '\0';
}
}
int
widget_text_finish( widget_finish_state finished )
{
if( finished == WIDGET_FINISHED_OK ) {
widget_text_text = realloc( widget_text_text, strlen( text ) + 1 );
if( !widget_text_text ) {
ui_error( UI_ERROR_ERROR, "Out of memory at %s:%d", __FILE__, __LINE__ );
return 1;
}
strcpy( widget_text_text, text );
} else {
free( widget_text_text );
widget_text_text = NULL;
}
return 0;
}
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