PIKApp/plug-ins/script-fu/console/script-fu-console-editor.c

98 lines
2.5 KiB
C

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "script-fu-console-editor.h"
/* ConsoleEditor
* An API that abstracts these GtkWidgets for editing text:
* - GtkTextEntry is single line,
* - GtkTextView is multiline.
*
* So that we can swap out or enhance widget without affecting main logic.
*
* Not a defined class but methods conform to naming and calling conventions.
*
* Is-a GtkWidget.
*/
/* FUTURE
* GtkTextEntry => GtkTextView (multiline)
*
* Possibly: an editor that understands syntax and highlighting.
*/
GtkWidget *
console_editor_new (void)
{
return gtk_entry_new ();
}
/* Set editor's text and position the cursor.
* @position conforms to GtkEditable interface.
*/
void
console_editor_set_text_and_position (GtkWidget *self,
const gchar *text,
gint position)
{
/* gtk_entry_set_text not allow NULL */
if (text != NULL)
gtk_entry_set_text (GTK_ENTRY (self), text);
gtk_editable_set_position (GTK_EDITABLE (self), position);
}
void
console_editor_clear (GtkWidget *self)
{
console_editor_set_text_and_position (self, "", -1);
}
const gchar *
console_editor_get_text (GtkWidget *self)
{
return gtk_entry_get_text (GTK_ENTRY (self));
}
gboolean
console_editor_is_empty (GtkWidget *self)
{
const gchar *str;
if ((str = console_editor_get_text (self)) == NULL)
return TRUE;
while (*str)
{
if (*str != ' ' && *str != '\t' && *str != '\n')
return FALSE;
str ++;
}
return TRUE;
}