Desktop
/* $Id: editor.c,v 1.36 2010/04/07 20:34:29 khorben Exp $ */
/* Copyright (c) 2010 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Editor */
/* Editor is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 3 as published by the Free
* Software Foundation.
*
* Editor 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
* Editor; if not, see <http://www.gnu.org/licenses/>. */
#include <sys/stat.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <libintl.h>
#include <gdk/gdkkeysyms.h>
#include <Desktop.h>
#include "callbacks.h"
#include "editor.h"
#include "../config.h"
#define _(string) gettext(string)
#define N_(string) (string)
/* constants */
#ifdef EMBEDDED
static DesktopAccel _editor_accel[] =
{
{ G_CALLBACK(on_close), GDK_CONTROL_MASK, GDK_w },
{ G_CALLBACK(on_new), GDK_CONTROL_MASK, GDK_n },
{ G_CALLBACK(on_open), GDK_CONTROL_MASK, GDK_o },
{ G_CALLBACK(on_preferences), GDK_CONTROL_MASK, GDK_p },
{ G_CALLBACK(on_save), GDK_CONTROL_MASK, GDK_s },
{ G_CALLBACK(on_save_as), GDK_CONTROL_MASK, GDK_S },
{ NULL, 0, 0 }
};
#endif
#ifndef EMBEDDED
static DesktopMenu _editor_menu_file[] =
{
{ N_("_New"), G_CALLBACK(on_file_new), GTK_STOCK_NEW, GDK_n },
{ N_("_Open"), G_CALLBACK(on_file_open), GTK_STOCK_OPEN, GDK_o },
{ "", NULL, NULL, 0 },
{ N_("_Save"), G_CALLBACK(on_file_save), GTK_STOCK_SAVE, GDK_s },
{ N_("_Save as..."), G_CALLBACK(on_file_save_as), GTK_STOCK_SAVE_AS,
GDK_S },
{ "", NULL, NULL, 0 },
{ N_("_Close"), G_CALLBACK(on_file_close), GTK_STOCK_CLOSE, 0 },
{ NULL, NULL, NULL, 0 }
};
static DesktopMenu _editor_menu_edit[] =
{
{ N_("_Undo"), NULL, GTK_STOCK_UNDO, GDK_z }, /* FIXME implement */
{ N_("_Redo"), NULL, GTK_STOCK_REDO, GDK_r }, /* FIXME implement */
{ "", NULL, NULL, 0 },
{ N_("_Cut"), NULL, GTK_STOCK_CUT, 0 }, /* FIXME implement */
{ N_("_Copy"), NULL, GTK_STOCK_COPY, 0 }, /* FIXME implement */
{ N_("_Paste"), NULL, GTK_STOCK_PASTE, 0 }, /* FIXME implement */
{ "", NULL, NULL, 0 },
{ N_("_Find"), G_CALLBACK(on_edit_find), GTK_STOCK_FIND, GDK_F },
{ "", NULL, NULL, 0 },
{ N_("_Preferences"), G_CALLBACK(on_edit_preferences),
GTK_STOCK_PREFERENCES, GDK_p },
{ NULL, NULL, NULL, 0 }
};
static DesktopMenu _editor_menu_help[] =
{
#if GTK_CHECK_VERSION(2, 6, 0)
{ N_("_About"), G_CALLBACK(on_help_about), GTK_STOCK_ABOUT, 0 },
#else
{ N_("_About"), G_CALLBACK(on_help_about), NULL, 0 },
#endif
{ NULL, NULL, NULL, 0 }
};
static DesktopMenubar _editor_menubar[] =
{
{ N_("_File"), _editor_menu_file },
{ N_("_Edit"), _editor_menu_edit },
{ N_("_Help"), _editor_menu_help },
{ NULL, NULL }
};
#endif
static DesktopToolbar _editor_toolbar[] =
{
{ N_("New"), G_CALLBACK(on_new), GTK_STOCK_NEW, 0, NULL },
{ N_("Open"), G_CALLBACK(on_open), GTK_STOCK_OPEN, 0, NULL },
{ "", NULL, NULL, 0, NULL },
{ N_("Save"), G_CALLBACK(on_save), GTK_STOCK_SAVE, 0, NULL },
{ N_("Save as"), G_CALLBACK(on_save_as), GTK_STOCK_SAVE_AS, 0, NULL },
#ifdef EMBEDDED
{ "", NULL, NULL, 0, NULL },
{ N_("Preferences"), G_CALLBACK(on_preferences), GTK_STOCK_PREFERENCES,
0, NULL },
#endif
{ NULL, NULL, NULL, 0, NULL }
};
/* Editor */
/* private */
/* prototypes */
static gboolean _editor_find(Editor * editor, char const * text,
gboolean sensitive, gboolean wrap);
/* public */
/* functions */
/* editor_new */
static void _new_set_title(Editor * editor);
Editor * editor_new(void)
{
Editor * editor;
GtkAccelGroup * group;
GtkSettings * settings;
GtkWidget * vbox;
GtkWidget * widget;
PangoFontDescription * desc;
if((editor = malloc(sizeof(*editor))) == NULL)
return NULL;
editor->font = NULL;
settings = gtk_settings_get_default();
g_object_get(G_OBJECT(settings), "gtk-font-name", &editor->font, NULL);
if(editor->font == NULL)
editor->font = EDITOR_DEFAULT_FONT;
editor->filename = NULL;
editor->search = 0;
/* widgets */
group = gtk_accel_group_new();
editor->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_add_accel_group(GTK_WINDOW(editor->window), group);
gtk_window_set_default_size(GTK_WINDOW(editor->window), 600, 400);
_new_set_title(editor);
#if GTK_CHECK_VERSION(2, 6, 0)
gtk_window_set_icon_name(GTK_WINDOW(editor->window), "text-editor");
#endif
g_signal_connect(G_OBJECT(editor->window), "delete-event", G_CALLBACK(
on_closex), editor);
vbox = gtk_vbox_new(FALSE, 0);
/* menubar */
#ifndef EMBEDDED
widget = desktop_menubar_create(_editor_menubar, editor, group);
gtk_box_pack_start(GTK_BOX(vbox), widget, FALSE, FALSE, 0);
#else
desktop_accel_create(_editor_accel, editor, group);
#endif
/* toolbar */
widget = desktop_toolbar_create(_editor_toolbar, editor, group);
gtk_box_pack_start(GTK_BOX(vbox), widget, FALSE, FALSE, 0);
/* view */
widget = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
editor->view = gtk_text_view_new();
/* FIXME make it an option */
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(editor->view),
GTK_WRAP_WORD_CHAR);
desc = pango_font_description_from_string(editor->font);
pango_font_description_set_family(desc, "monospace");
editor_set_font(editor, pango_font_description_to_string(desc));
pango_font_description_free(desc);
gtk_container_add(GTK_CONTAINER(widget), editor->view);
gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 0);
/* statusbar */
editor->statusbar = gtk_statusbar_new();
gtk_box_pack_start(GTK_BOX(vbox), editor->statusbar, FALSE, FALSE, 0);
/* preferences */
editor->pr_window = NULL;
/* find */
editor->fi_dialog = NULL;
gtk_container_add(GTK_CONTAINER(editor->window), vbox);
gtk_window_set_focus(GTK_WINDOW(editor->window), editor->view);
gtk_widget_show_all(editor->window);
return editor;
}
static void _new_set_title(Editor * editor)
{
char buf[256];
snprintf(buf, sizeof(buf), "%s%s", _("Text editor - "), editor->filename
== NULL ? _("(Untitled)") : editor->filename);
gtk_window_set_title(GTK_WINDOW(editor->window), buf);
}
/* editor_delete */
void editor_delete(Editor * editor)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
free(editor);
}
/* accessors */
void editor_set_font(Editor * editor, char const * font)
{
PangoFontDescription * desc;
editor->font = font;
desc = pango_font_description_from_string(font);
gtk_widget_modify_font(editor->view, desc);
pango_font_description_free(desc);
}
/* useful */
/* editor_error */
int editor_error(Editor * editor, char const * message, int ret)
{
GtkWidget * dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(editor->window),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s",
#if GTK_CHECK_VERSION(2, 6, 0)
_("Error"));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
"%s",
#endif
message);
gtk_window_set_title(GTK_WINDOW(dialog), _("Error"));
g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(
gtk_widget_destroy), NULL);
gtk_widget_show(dialog);
return ret;
}
/* editor_close */
gboolean editor_close(Editor * editor)
{
GtkWidget * dialog;
int res;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(gtk_text_buffer_get_modified(gtk_text_view_get_buffer(GTK_TEXT_VIEW(
editor->view))) == FALSE)
{
gtk_main_quit();
return FALSE;
}
dialog = gtk_message_dialog_new(GTK_WINDOW(editor->window),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_WARNING, GTK_BUTTONS_NONE, "%s",
#if GTK_CHECK_VERSION(2, 6, 0)
_("Warning"));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
"%s",
#endif
_("There are unsaved changes.\n"
"Are you sure you want to close?"));
gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_CANCEL,
GTK_RESPONSE_CANCEL, GTK_STOCK_CLOSE,
GTK_RESPONSE_CLOSE, NULL);
gtk_window_set_title(GTK_WINDOW(dialog), _("Warning"));
res = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
if(res != GTK_RESPONSE_CLOSE)
return TRUE;
gtk_main_quit();
return FALSE;
}
/* editor_find */
static void _find_dialog(Editor * editor);
static void _on_find_activate(GtkWidget * widget, gpointer data);
static void _on_find_response(GtkWidget * widget, gint response, gpointer data);
void editor_find(Editor * editor, char const * text)
{
if(editor->fi_dialog == NULL)
_find_dialog(editor);
gtk_entry_set_text(GTK_ENTRY(editor->fi_text), (text != NULL) ? text
: "");
gtk_widget_show(editor->fi_dialog);
}
static void _find_dialog(Editor * editor)
{
GtkWidget * vbox;
GtkWidget * hbox;
GtkWidget * widget;
editor->fi_dialog = gtk_dialog_new_with_buttons(_("Find text"),
GTK_WINDOW(editor->window),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
GTK_STOCK_FIND, GTK_RESPONSE_ACCEPT, NULL);
vbox = GTK_DIALOG(editor->fi_dialog)->vbox;
hbox = gtk_hbox_new(FALSE, 0);
widget = gtk_label_new(_("Text:"));
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
editor->fi_text = gtk_entry_new();
g_signal_connect(G_OBJECT(editor->fi_text), "activate", G_CALLBACK(
_on_find_activate), editor);
gtk_box_pack_start(GTK_BOX(hbox), editor->fi_text, TRUE, TRUE, 4);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 4);
editor->fi_case = gtk_check_button_new_with_label(_("Case-sensitive"));
gtk_box_pack_start(GTK_BOX(vbox), editor->fi_case, TRUE, TRUE, 4);
editor->fi_wrap = gtk_check_button_new_with_label(_("Wrap"));
gtk_box_pack_start(GTK_BOX(vbox), editor->fi_wrap, TRUE, TRUE, 4);
gtk_widget_show_all(vbox);
g_signal_connect(G_OBJECT(editor->fi_dialog), "response", G_CALLBACK(
_on_find_response), editor);
}
static void _on_find_activate(GtkWidget * widget, gpointer data)
{
Editor * editor = data;
char const * text;
gboolean sensitive;
gboolean wrap;
if((text = gtk_entry_get_text(GTK_ENTRY(widget))) == NULL
|| strlen(text) == 0)
return;
sensitive = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(
editor->fi_case));
wrap = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(
editor->fi_wrap));
if(_editor_find(editor, text, sensitive, wrap) == TRUE)
return;
editor_error(editor, _("Text not found"), 0);
}
static void _on_find_response(GtkWidget * widget, gint response, gpointer data)
{
Editor * editor = data;
if(response != GTK_RESPONSE_ACCEPT)
{
gtk_widget_hide(widget);
if(response == GTK_RESPONSE_DELETE_EVENT)
editor->fi_dialog = NULL;
return;
}
_on_find_activate(editor->fi_text, editor);
}
/* editor_open */
void editor_open(Editor * editor, char const * filename)
{
GtkWidget * dialog;
int res;
FILE * fp;
GtkTextBuffer * tbuf;
GtkTextIter iter;
char buf[BUFSIZ];
size_t len;
char * p;
size_t rlen;
size_t wlen;
GError * error = NULL;
if(gtk_text_buffer_get_modified(gtk_text_view_get_buffer(GTK_TEXT_VIEW(
editor->view))) == TRUE)
{
dialog = gtk_message_dialog_new(GTK_WINDOW(editor->window),
GTK_DIALOG_MODAL
| GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_WARNING, GTK_BUTTONS_NONE, "%s",
#if GTK_CHECK_VERSION(2, 6, 0)
_("Warning"));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(
dialog), "%s",
#endif
_("There are unsaved changes.\n"
"Are you sure you want to discard them?"));
gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_CANCEL,
GTK_RESPONSE_CANCEL,
#if GTK_CHECK_VERSION(2, 12, 0)
GTK_STOCK_DISCARD,
#else
_("Discard"),
#endif
GTK_RESPONSE_CLOSE, NULL);
gtk_window_set_title(GTK_WINDOW(dialog), _("Warning"));
res = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
if(res != GTK_RESPONSE_CLOSE)
return;
}
tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(editor->view));
gtk_text_buffer_set_text(tbuf, "", 0);
editor->search = 0;
if(filename == NULL)
{
gtk_text_buffer_set_modified(GTK_TEXT_BUFFER(
gtk_text_view_get_buffer(GTK_TEXT_VIEW(
editor->view))), FALSE);
return;
}
if((fp = fopen(filename, "r")) == NULL)
{
snprintf(buf, sizeof(buf), "%s: %s", filename, strerror(errno));
editor_error(editor, buf, 1);
return;
}
tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(editor->view));
gtk_text_buffer_set_text(tbuf, "", 0);
while((len = fread(buf, sizeof(char), sizeof(buf), fp)) > 0)
{
gtk_text_buffer_get_end_iter(tbuf, &iter);
#if 0
if((p = g_convert(buf, len, "UTF-8", "ISO-8859-15", &rlen, &wlen, NULL)) != NULL)
{
gtk_text_buffer_insert(tbuf, &iter, p, wlen);
g_free(p);
}
else
gtk_text_buffer_insert(tbuf, &iter, buf, len);
#else
if((p = g_locale_to_utf8(buf, len, &rlen, &wlen, &error))
!= NULL)
/* FIXME may lose characters */
gtk_text_buffer_insert(tbuf, &iter, p, wlen);
else
gtk_text_buffer_insert(tbuf, &iter, buf, len);
#endif
}
fclose(fp);
gtk_text_buffer_set_modified(GTK_TEXT_BUFFER(gtk_text_view_get_buffer(
GTK_TEXT_VIEW(editor->view))), FALSE);
editor->filename = g_strdup(filename);
_new_set_title(editor); /* XXX make it a generic private function */
}
/* editor_open_dialog */
void editor_open_dialog(Editor * editor)
{
GtkWidget * dialog;
char * filename = NULL;
dialog = gtk_file_chooser_dialog_new(_("Open file..."),
GTK_WINDOW(editor->window),
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, NULL);
if(gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT)
filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(
dialog));
gtk_widget_destroy(dialog);
if(filename == NULL)
return;
editor_open(editor, filename);
g_free(filename);
}
/* editor_save */
gboolean editor_save(Editor * editor)
{
FILE * fp;
GtkTextBuffer * tbuf;
GtkTextIter start;
GtkTextIter end;
char * buf;
size_t len;
if(editor->filename == NULL)
{
editor_save_as_dialog(editor);
return FALSE;
}
if((fp = fopen(editor->filename, "w")) == NULL)
{
buf = g_strdup_printf("%s: %s", editor->filename, strerror(
errno));
editor_error(editor, buf, 1);
g_free(buf);
return FALSE;
}
tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(editor->view));
/* FIXME allocating the complete file is not optimal */
gtk_text_buffer_get_start_iter(GTK_TEXT_BUFFER(tbuf), &start);
gtk_text_buffer_get_end_iter(GTK_TEXT_BUFFER(tbuf), &end);
buf = gtk_text_buffer_get_text(GTK_TEXT_BUFFER(tbuf), &start, &end,
FALSE);
len = strlen(buf);
if(fwrite(buf, sizeof(char), len, fp) != len)
{
g_free(buf);
fclose(fp);
editor_error(editor, _("Partial write"), 0);
return FALSE;
}
g_free(buf);
fclose(fp);
gtk_text_buffer_set_modified(GTK_TEXT_BUFFER(tbuf), FALSE);
return TRUE;
}
/* editor_save_as */
gboolean editor_save_as(Editor * editor, char const * filename)
{
struct stat st;
GtkWidget * dialog;
int ret;
if(stat(filename, &st) == 0)
{
dialog = gtk_message_dialog_new(GTK_WINDOW(editor->window),
GTK_DIALOG_MODAL
| GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_WARNING, GTK_BUTTONS_YES_NO, "%s",
#if GTK_CHECK_VERSION(2, 6, 0)
_("Warning"));
gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(
dialog), "%s",
#endif
_("File exists. Overwrite?"));
gtk_window_set_title(GTK_WINDOW(dialog), "Warning");
ret = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
if(ret == GTK_RESPONSE_NO)
return FALSE;
}
g_free(editor->filename);
if((editor->filename = g_strdup(filename)) == NULL)
return editor_error(editor, _("Allocation error"), FALSE);
if(editor_save(editor) != TRUE)
return FALSE;
_new_set_title(editor);
return TRUE;
}
/* editor_save_as_dialog */
gboolean editor_save_as_dialog(Editor * editor)
{
GtkWidget * dialog;
char * filename = NULL;
gboolean ret;
dialog = gtk_file_chooser_dialog_new(_("Save as..."),
GTK_WINDOW(editor->window),
GTK_FILE_CHOOSER_ACTION_SAVE,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT, NULL);
if(gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT)
filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(
dialog));
gtk_widget_destroy(dialog);
if(filename == NULL)
return FALSE;
ret = editor_save_as(editor, filename);
g_free(filename);
return ret;
}
/* private */
/* functions */
/* editor_find */
static char const * _find_string(char const * big, char const * little,
gboolean sensitive);
static gboolean _find_match(Editor * editor, GtkTextBuffer * buffer,
char const * buf, char const * str, size_t len);
static gboolean _editor_find(Editor * editor, char const * text,
gboolean sensitive, gboolean wrap)
{
gboolean ret = FALSE;
size_t tlen;
GtkTextBuffer * buffer;
GtkTextIter start;
GtkTextIter end;
gchar * buf;
size_t blen;
char const * str;
if(text == NULL || (tlen = strlen(text)) == 0)
return ret;
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(editor->view));
/* XXX highly inefficient */
gtk_text_buffer_get_start_iter(buffer, &start);
gtk_text_buffer_get_end_iter(buffer, &end);
buf = gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
if(buf == NULL || (blen = strlen(buf)) == 0)
return ret;
if(editor->search >= blen)
editor->search = 0;
if((str = _find_string(&buf[editor->search], text, sensitive)) != NULL)
ret = _find_match(editor, buffer, buf, str, tlen);
else if(wrap && editor->search != 0) /* wrap around */
{
buf[editor->search] = '\0';
if((str = _find_string(buf, text, sensitive)) != NULL)
ret = _find_match(editor, buffer, buf, str, tlen);
}
g_free(buf);
return ret;
}
static char const * _find_string(char const * big, char const * little,
gboolean sensitive)
{
return sensitive ? strstr(big, little) : strcasestr(big, little);
}
static gboolean _find_match(Editor * editor, GtkTextBuffer * buffer,
char const * buf, char const * str, size_t len)
{
size_t offset;
GtkTextIter start;
GtkTextIter end;
offset = str - buf;
editor->search = offset + 1;
gtk_text_buffer_get_iter_at_offset(buffer, &start, offset);
gtk_text_buffer_get_iter_at_offset(buffer, &end, offset + len);
gtk_text_buffer_select_range(buffer, &start, &end);
gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(editor->view), &start, 0.0,
FALSE, 0.0, 0.0);
return TRUE;
}