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gimp/app/widgets/gimptexteditor.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* GimpTextEditor
* Copyright (C) 2002-2003 Sven Neumann <sven@gimp.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimpmarshal.h"
#include "gimpenumwidgets.h"
#include "gimphelp-ids.h"
#include "gimptexteditor.h"
#include "gimp-intl.h"
enum
{
TEXT_CHANGED,
DIR_CHANGED,
LAST_SIGNAL
};
static void gimp_text_editor_class_init (GimpTextEditorClass *klass);
static void gimp_text_editor_init (GimpTextEditor *editor);
static void gimp_text_editor_text_changed (GtkTextBuffer *buffer,
GimpTextEditor *editor);
static void gimp_text_editor_dir_changed (GtkWidget *widget,
GimpTextEditor *editor);
static void gimp_text_editor_load (GtkWidget *widget,
GimpTextEditor *editor);
static void gimp_text_editor_load_response (GtkWidget *dialog,
gint response_id,
GimpTextEditor *editor);
static gboolean gimp_text_editor_load_file (GimpTextEditor *editor,
const gchar *filename);
static void gimp_text_editor_clear (GtkWidget *widget,
GimpTextEditor *editor);
static GimpDialogClass *parent_class = NULL;
static guint text_editor_signals[LAST_SIGNAL] = { 0 };
GType
gimp_text_editor_get_type (void)
{
static GType type = 0;
if (! type)
{
static const GTypeInfo info =
{
sizeof (GimpTextEditorClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_text_editor_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpTextEditor),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_text_editor_init,
};
type = g_type_register_static (GIMP_TYPE_DIALOG,
"GimpTextEditor",
&info, 0);
}
return type;
}
static void
gimp_text_editor_class_init (GimpTextEditorClass *klass)
{
parent_class = g_type_class_peek_parent (klass);
text_editor_signals[TEXT_CHANGED] =
g_signal_new ("text_changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpTextEditorClass, text_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
text_editor_signals[DIR_CHANGED] =
g_signal_new ("dir_changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpTextEditorClass, dir_changed),
NULL, NULL,
gimp_marshal_VOID__VOID,
G_TYPE_NONE, 0);
klass->text_changed = NULL;
klass->dir_changed = NULL;
}
static void
gimp_text_editor_init (GimpTextEditor *editor)
{
editor->view = NULL;
editor->group = NULL;
editor->file_dialog = NULL;
switch (gtk_widget_get_default_direction ())
{
case GTK_TEXT_DIR_NONE:
case GTK_TEXT_DIR_LTR:
editor->base_dir = GIMP_TEXT_DIRECTION_LTR;
break;
case GTK_TEXT_DIR_RTL:
editor->base_dir = GIMP_TEXT_DIRECTION_RTL;
break;
}
}
GtkWidget *
gimp_text_editor_new (const gchar *title)
{
GimpTextEditor *editor;
GtkTextBuffer *buffer;
GtkToolbar *toolbar;
GtkWidget *scrolled_window;
GtkWidget *box;
GtkWidget *button;
GList *children;
GList *list;
g_return_val_if_fail (title != NULL, NULL);
editor = g_object_new (GIMP_TYPE_TEXT_EDITOR,
"title", title,
"role", "gimp-text-editor",
NULL);
gimp_help_connect (GTK_WIDGET (editor), gimp_standard_help_func,
GIMP_HELP_TEXT_EDITOR_DIALOG, NULL);
gtk_dialog_add_button (GTK_DIALOG (editor),
GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE);
g_signal_connect (editor, "response",
G_CALLBACK (gtk_widget_destroy),
NULL);
toolbar = GTK_TOOLBAR (gtk_toolbar_new ());
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (editor)->vbox),
GTK_WIDGET (toolbar), FALSE, FALSE, 0);
gtk_widget_show (GTK_WIDGET (toolbar));
gtk_toolbar_insert_stock (toolbar, GTK_STOCK_OPEN,
_("Load Text from File"), NULL,
G_CALLBACK (gimp_text_editor_load), editor,
0);
gtk_toolbar_insert_stock (toolbar, GTK_STOCK_CLEAR,
_("Clear all Text"), NULL,
G_CALLBACK (gimp_text_editor_clear), editor,
1);
gtk_toolbar_append_space (toolbar);
box = gimp_enum_stock_box_new (GIMP_TYPE_TEXT_DIRECTION,
"gimp-text-dir",
gtk_toolbar_get_icon_size (toolbar),
G_CALLBACK (gimp_text_editor_dir_changed),
editor,
&editor->group);
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (editor->group),
editor->base_dir);
children = gtk_container_get_children (GTK_CONTAINER (box));
for (list = children; list; list = g_list_next (list))
{
button = GTK_WIDGET (list->data);
g_object_ref (button);
gtk_container_remove (GTK_CONTAINER (box), button);
gtk_toolbar_append_widget (toolbar, button, NULL, NULL);
g_object_unref (button);
}
g_list_free (children);
gtk_object_sink (GTK_OBJECT (box));
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_container_set_border_width (GTK_CONTAINER (scrolled_window), 2);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (editor)->vbox),
scrolled_window, TRUE, TRUE, 0);
gtk_widget_show (scrolled_window);
editor->view = gtk_text_view_new ();
gtk_container_add (GTK_CONTAINER (scrolled_window), editor->view);
gtk_widget_show (editor->view);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (editor->view));
g_signal_connect (buffer, "changed",
G_CALLBACK (gimp_text_editor_text_changed),
editor);
switch (editor->base_dir)
{
case GIMP_TEXT_DIRECTION_LTR:
gtk_widget_set_direction (editor->view, GTK_TEXT_DIR_LTR);
break;
case GIMP_TEXT_DIRECTION_RTL:
gtk_widget_set_direction (editor->view, GTK_TEXT_DIR_RTL);
break;
}
gtk_widget_set_size_request (editor->view, 128, 64);
return GTK_WIDGET (editor);
}
void
gimp_text_editor_set_text (GimpTextEditor *editor,
const gchar *text,
gint len)
{
GtkTextBuffer *buffer;
g_return_if_fail (GIMP_IS_TEXT_EDITOR (editor));
g_return_if_fail (text != NULL || len == 0);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (editor->view));
if (text)
gtk_text_buffer_set_text (buffer, text, len);
else
gtk_text_buffer_set_text (buffer, "", 0);
}
gchar *
gimp_text_editor_get_text (GimpTextEditor *editor)
{
GtkTextBuffer *buffer;
GtkTextIter start_iter;
GtkTextIter end_iter;
g_return_val_if_fail (GIMP_IS_TEXT_EDITOR (editor), NULL);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (editor->view));
gtk_text_buffer_get_bounds (buffer, &start_iter, &end_iter);
return gtk_text_buffer_get_text (buffer, &start_iter, &end_iter, FALSE);
}
static void
gimp_text_editor_text_changed (GtkTextBuffer *buffer,
GimpTextEditor *editor)
{
g_signal_emit (editor, text_editor_signals[TEXT_CHANGED], 0);
}
void
gimp_text_editor_set_direction (GimpTextEditor *editor,
GimpTextDirection base_dir)
{
g_return_if_fail (GIMP_IS_TEXT_EDITOR (editor));
if (editor->base_dir == base_dir)
return;
editor->base_dir = base_dir;
g_signal_handlers_block_by_func (editor->group,
G_CALLBACK (gimp_text_editor_dir_changed),
editor);
gimp_int_radio_group_set_active (GTK_RADIO_BUTTON (editor->group), base_dir);
g_signal_handlers_unblock_by_func (editor->group,
G_CALLBACK (gimp_text_editor_dir_changed),
editor);
if (editor->view)
{
switch (editor->base_dir)
{
case GIMP_TEXT_DIRECTION_LTR:
gtk_widget_set_direction (editor->view, GTK_TEXT_DIR_LTR);
break;
case GIMP_TEXT_DIRECTION_RTL:
gtk_widget_set_direction (editor->view, GTK_TEXT_DIR_RTL);
break;
}
}
g_signal_emit (editor, text_editor_signals[DIR_CHANGED], 0);
}
GimpTextDirection
gimp_text_editor_get_direction (GimpTextEditor *editor)
{
g_return_val_if_fail (GIMP_IS_TEXT_EDITOR (editor), GIMP_TEXT_DIRECTION_LTR);
return editor->base_dir;
}
static void
gimp_text_editor_dir_changed (GtkWidget *widget,
GimpTextEditor *editor)
{
GimpTextDirection dir;
dir = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget),
"gimp-item-data"));
gimp_text_editor_set_direction (editor, dir);
}
static void
gimp_text_editor_load (GtkWidget *widget,
GimpTextEditor *editor)
{
GtkFileChooser *chooser;
if (editor->file_dialog)
{
gtk_window_present (GTK_WINDOW (editor->file_dialog));
return;
}
editor->file_dialog =
gtk_file_chooser_dialog_new (_("Open Text File (UTF-8)"),
GTK_WINDOW (editor),
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_OK,
NULL);
chooser = GTK_FILE_CHOOSER (editor->file_dialog);
g_object_add_weak_pointer (G_OBJECT (chooser),
(gpointer) &editor->file_dialog);
gtk_window_set_role (GTK_WINDOW (chooser), "gimp-text-load-file");
gtk_window_set_position (GTK_WINDOW (chooser), GTK_WIN_POS_MOUSE);
gtk_window_set_destroy_with_parent (GTK_WINDOW (chooser), TRUE);
g_signal_connect (chooser, "response",
G_CALLBACK (gimp_text_editor_load_response),
editor);
g_signal_connect (chooser, "delete_event",
G_CALLBACK (gtk_true),
NULL);
gtk_widget_show (GTK_WIDGET (chooser));
}
static void
gimp_text_editor_load_response (GtkWidget *dialog,
gint response_id,
GimpTextEditor *editor)
{
if (response_id == GTK_RESPONSE_OK)
{
gchar *filename;
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
if (! gimp_text_editor_load_file (editor, filename))
{
g_free (filename);
return;
}
g_free (filename);
}
gtk_widget_destroy (dialog);
}
static gboolean
gimp_text_editor_load_file (GimpTextEditor *editor,
const gchar *filename)
{
GtkTextBuffer *buffer;
FILE *file;
gchar buf[2048];
gint remaining = 0;
GtkTextIter iter;
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (editor->view));
file = fopen (filename, "r");
if (!file)
{
g_message (_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return FALSE;
}
gtk_text_buffer_set_text (buffer, "", 0);
gtk_text_buffer_get_iter_at_offset (buffer, &iter, 0);
while (!feof (file))
{
const char *leftover;
gint count;
gint to_read = sizeof (buf) - remaining - 1;
count = fread (buf + remaining, 1, to_read, file);
buf[count + remaining] = '\0';
g_utf8_validate (buf, count + remaining, &leftover);
gtk_text_buffer_insert (buffer, &iter, buf, leftover - buf);
remaining = (buf + remaining + count) - leftover;
g_memmove (buf, leftover, remaining);
if (remaining > 6 || count < to_read)
break;
}
if (remaining)
g_message (_("Invalid UTF-8 data in file '%s'."),
gimp_filename_to_utf8 (filename));
return TRUE;
}
static void
gimp_text_editor_clear (GtkWidget *widget,
GimpTextEditor *editor)
{
GtkTextBuffer *buffer;
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (editor->view));
gtk_text_buffer_set_text (buffer, "", 0);
}
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