Desktop
/* $Id: view.c,v 1.8 2008/01/29 11:27:37 khorben Exp $ */
static char const _copyright[] =
"Copyright (c) 2008 Pierre Pronchery <khorben@defora.org>";
/* This file is part of DeforaOS Desktop Browser */
static char const _license[] =
"Browser is not free software; you can redistribute it and/or modify it\n"
"under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike\n"
"3.0 Unported as published by the Creative Commons organization.\n"
"\n"
"Browser is distributed in the hope that it will be useful, but WITHOUT ANY\n"
"WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\n"
"FOR A PARTICULAR PURPOSE. See the Creative Commons Attribution-\n"
"NonCommercial-ShareAlike 3.0 Unported license for more details.\n"
"\n"
"You should have received a copy of the Creative Commons Attribution-\n"
"NonCommercial-ShareAlike 3.0 along with Browser; if not, browse to\n"
"http://creativecommons.org/licenses/by-nc-sa/3.0/";
#include <sys/stat.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "mime.h"
#include "../config.h"
#define min(a, b) ((a) < (b)) ? (a) : (b)
/* types */
struct _menuitem
{
char * name;
GtkSignalFunc callback;
char * stock;
unsigned int accel;
};
typedef struct _menuitem const * _menu;
struct _menubar
{
const char * name;
const _menu * menu;
};
/* constants */
static char const * _authors[] =
{
"Pierre Pronchery <khorben@defora.org>",
NULL
};
/* View */
/* private */
/* types */
typedef struct _View
{
char * pathname;
/* widgets */
GtkWidget * window;
GtkWidget * ab_window;
} View;
/* functions */
static View * _view_new(char const * path);
static void _view_delete(View * view);
/* useful */
static int _view_error(View * view, char const * message, int ret);
/* callbacks */
static gboolean _on_closex(GtkWidget * widget, GdkEvent * event, gpointer data);
static void _on_file_edit(GtkWidget * widget, gpointer data);
static void _on_file_open_with(GtkWidget * widget, gpointer data);
static void _on_file_close(GtkWidget * widget, gpointer data);
static void _on_help_about(GtkWidget * widget, gpointer data);
/* constants */
static const struct _menuitem _menuitem_separator =
{ "", NULL, NULL, 0 };
static const struct _menuitem _menuitem_file_edit =
{ "Edit", G_CALLBACK(_on_file_edit), GTK_STOCK_EDIT, 0 };
static const struct _menuitem _menuitem_file_open_with =
{ "Open _with...", G_CALLBACK(_on_file_open_with), NULL, 0 };
static const struct _menuitem _menuitem_file_close =
{ "_Close", G_CALLBACK(_on_file_close), GTK_STOCK_CLOSE, GDK_W };
static const struct _menuitem _menuitem_file_end =
{ NULL, NULL, NULL, 0 };
static const _menu _menu_file[] =
{
&_menuitem_file_open_with, &_menuitem_separator,
&_menuitem_file_close, &_menuitem_file_end
};
static const _menu _menu_file_edit[] =
{
&_menuitem_file_edit, &_menuitem_file_open_with, &_menuitem_separator,
&_menuitem_file_close, &_menuitem_file_end
};
static const struct _menuitem _menuitem_help_about =
#if GTK_CHECK_VERSION(2, 6, 0)
{ "_About", G_CALLBACK(_on_help_about), GTK_STOCK_ABOUT, 0 };
#else
{ "_About", G_CALLBACK(_on_help_about), NULL, 0 };
#endif
static const _menu _menu_help[] =
{
&_menuitem_help_about, &_menuitem_file_end
};
static struct _menubar _menubar[] =
{
{ "_File", _menu_file },
{ "_Help", _menu_help },
{ NULL, NULL }
};
/* variables */
static Mime * _mime = NULL;
static unsigned int _view_cnt = 0;
/* functions */
/* view_new */
static GtkWidget * _new_menubar(View * view);
static GtkWidget * _new_image(View * view, char const * path);
static GtkWidget * _new_text(View * view, char const * path);
static View * _view_new(char const * pathname)
{
View * view;
struct stat st;
char const * type;
char buf[256];
GtkWidget * vbox;
GtkWidget * widget;
if((view = malloc(sizeof(*view))) == NULL)
return NULL; /* FIXME handle error */
view->pathname = strdup(pathname);
view->window = NULL;
view->ab_window = NULL;
_view_cnt++;
if(lstat(pathname, &st) != 0)
{
_view_error(view, strerror(errno), 2);
return NULL;
}
if(_mime == NULL)
_mime = mime_new();
if((type = mime_type(_mime, pathname)) == NULL)
{
_view_error(view, "Unknown file type", 2);
return NULL;
}
if(mime_get_handler(_mime, type, "edit") != NULL)
_menubar[0].menu = _menu_file_edit;
view->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
snprintf(buf, sizeof(buf), "%s%s", "View - ", pathname);
gtk_window_set_title(GTK_WINDOW(view->window), buf);
g_signal_connect(view->window, "delete-event", G_CALLBACK(_on_closex),
view);
vbox = gtk_vbox_new(FALSE, 0);
widget = _new_menubar(view);
gtk_box_pack_start(GTK_BOX(vbox), widget, FALSE, FALSE, 0);
if(strncmp(type, "image/", 6) == 0)
{
if((widget = _new_image(view, pathname)) == NULL)
return NULL;
}
else if(strncmp(type, "text/", 5) == 0)
{
widget = _new_text(view, pathname);
gtk_window_set_default_size(GTK_WINDOW(view->window), 600, 400);
}
else
{
_view_error(view, "Unable to view file type", 2);
return NULL;
}
gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 0);
gtk_container_add(GTK_CONTAINER(view->window), vbox);
gtk_widget_show_all(view->window);
return view;
}
static GtkWidget * _new_menubar(View * view)
{
GtkWidget * tb_menubar;
GtkAccelGroup * group;
GtkWidget * menu;
GtkWidget * menubar;
GtkWidget * menuitem;
unsigned int i;
unsigned int j;
struct _menuitem const * p;
tb_menubar = gtk_menu_bar_new();
group = gtk_accel_group_new();
for(i = 0; _menubar[i].name != NULL; i++)
{
menubar = gtk_menu_item_new_with_mnemonic(_menubar[i].name);
menu = gtk_menu_new();
for(j = 0; _menubar[i].menu[j]->name != NULL; j++)
{
p = _menubar[i].menu[j];
if(p->name[0] == '\0')
menuitem = gtk_separator_menu_item_new();
else if(p->stock == NULL)
menuitem = gtk_menu_item_new_with_mnemonic(
p->name);
else
menuitem = gtk_image_menu_item_new_from_stock(
p->stock, NULL);
if(p->callback != NULL)
g_signal_connect(G_OBJECT(menuitem), "activate",
G_CALLBACK(p->callback), view);
else
gtk_widget_set_sensitive(menuitem, FALSE);
if(p->accel != 0)
gtk_widget_add_accelerator(menuitem, "activate",
group, p->accel,
GDK_CONTROL_MASK,
GTK_ACCEL_VISIBLE);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), menuitem);
}
gtk_menu_item_set_submenu(GTK_MENU_ITEM(menubar), menu);
gtk_menu_bar_append(GTK_MENU_BAR(tb_menubar), menubar);
}
gtk_window_add_accel_group(GTK_WINDOW(view->window), group);
return tb_menubar;
}
static GtkWidget * _new_image(View * view, char const * path)
{
GtkWidget * window;
GError * error = NULL;
GdkPixbuf * pixbuf;
GtkWidget * widget;
int pw;
int ph;
GdkScreen * screen;
int sw;
int sh;
window = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(window),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
if((pixbuf = gdk_pixbuf_new_from_file_at_size(path, -1, -1, &error))
== NULL)
{
_view_error(view, error->message, 1);
return NULL;
}
widget = gtk_image_new_from_pixbuf(pixbuf);
gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(window),
widget);
pw = gdk_pixbuf_get_width(pixbuf) + 4;
ph = gdk_pixbuf_get_height(pixbuf) + 4;
screen = gdk_screen_get_default();
sw = gdk_screen_get_width(screen);
sh = gdk_screen_get_height(screen);
gtk_widget_set_size_request(window, min(pw, sw), min(ph, sh));
return window;
}
static GtkWidget * _new_text(View * view, char const * path)
{
GtkWidget * widget;
GtkWidget * text;
PangoFontDescription * desc;
FILE * fp;
GtkTextBuffer * tbuf;
GtkTextIter iter;
char buf[BUFSIZ];
size_t len;
widget = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
text = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);
gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(text), FALSE);
desc = pango_font_description_new();
pango_font_description_set_family(desc, "monospace");
gtk_widget_modify_font(text, desc);
pango_font_description_free(desc);
gtk_container_add(GTK_CONTAINER(widget), text);
if((fp = fopen(path, "r")) == NULL)
{
_view_error(view, strerror(errno), 0);
return widget;
}
tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text));
while((len = fread(buf, sizeof(char), sizeof(buf), fp)) > 0)
{
gtk_text_buffer_get_end_iter(tbuf, &iter);
gtk_text_buffer_insert(tbuf, &iter, buf, len);
}
fclose(fp);
return widget;
}
/* view_delete */
static void _view_delete(View * view)
{
free(view->pathname);
if(view->ab_window != NULL)
gtk_widget_destroy(view->ab_window);
if(view->window != NULL)
gtk_widget_destroy(view->window);
free(view);
if(--_view_cnt == 0)
gtk_main_quit();
}
/* useful */
/* view_error
* POST view is deleted if ret != 0 */
static void _error_response(GtkWidget * widget, gint arg, gpointer data);
static int _view_error(View * view, char const * message, int ret)
{
GtkWidget * dialog;
dialog = gtk_message_dialog_new(view != NULL ? GTK_WINDOW(view->window)
: NULL, GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, "%s", message);
gtk_window_set_title(GTK_WINDOW(dialog), "Error");
g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(
_error_response), ret != 0 ? view : NULL);
gtk_widget_show(dialog);
return ret;
}
static void _error_response(GtkWidget * widget, gint arg, gpointer data)
{
View * view = data;
if(view != NULL)
_view_delete(view);
gtk_widget_destroy(widget);
}
/* callbacks */
static gboolean _on_closex(GtkWidget * widget, GdkEvent * event, gpointer data)
{
View * view = data;
_view_delete(view);
if(_view_cnt == 0)
gtk_main_quit();
return FALSE;
}
static void _on_file_edit(GtkWidget * widget, gpointer data)
{
View * view = data;
if(mime_action(_mime, "edit", view->pathname) != 0)
_view_error(view, "Could not edit file", 0);
}
static void _on_file_open_with(GtkWidget * widget, gpointer data)
{
View * view = data;
GtkWidget * dialog;
char * filename = NULL;
pid_t pid;
dialog = gtk_file_chooser_dialog_new("Open with...",
GTK_WINDOW(view->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;
if((pid = fork()) == -1)
_view_error(view, "fork", 0);
else if(pid == 0)
{
if(close(0) != 0)
_view_error(NULL, "stdin", 0);
execlp(filename, filename, view->pathname, NULL);
_view_error(NULL, filename, 0);
exit(2);
}
g_free(filename);
}
static void _on_file_close(GtkWidget * widget, gpointer data)
{
View * view = data;
_view_delete(view);
if(_view_cnt == 0)
gtk_main_quit();
}
/* on_help_about */
static gboolean _about_on_closex(GtkWidget * widget, GdkEvent * event,
gpointer data);
#if !GTK_CHECK_VERSION(2, 6, 0)
static void _about_on_close(GtkWidget * widget, gpointer data);
static void _about_on_credits(GtkWidget * widget, gpointer data);
static void _about_on_license(GtkWidget * widget, gpointer data);
#endif
static void _on_help_about(GtkWidget * widget, gpointer data)
{
View * view = data;
GtkWidget * window;
#if GTK_CHECK_VERSION(2, 6, 0)
gsize cnt = 65536;
gchar * buf;
if(view->ab_window != NULL)
{
gtk_widget_show(view->ab_window);
return;
}
view->ab_window = gtk_about_dialog_new();
window = view->ab_window;
gtk_window_set_transient_for(GTK_WINDOW(window), GTK_WINDOW(
view->window));
gtk_about_dialog_set_name(GTK_ABOUT_DIALOG(window), "View");
gtk_about_dialog_set_version(GTK_ABOUT_DIALOG(window), VERSION);
gtk_about_dialog_set_copyright(GTK_ABOUT_DIALOG(window), _copyright);
gtk_about_dialog_set_authors(GTK_ABOUT_DIALOG(window), _authors);
if(g_file_get_contents("/usr/share/common-licenses/GPL-2", &buf, &cnt,
NULL) == TRUE)
gtk_about_dialog_set_license(GTK_ABOUT_DIALOG(window), buf);
else
gtk_about_dialog_set_license(GTK_ABOUT_DIALOG(window),
_license);
free(buf);
g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(
_about_on_closex), window);
g_signal_connect(G_OBJECT(window), "response", G_CALLBACK(
gtk_widget_hide), NULL);
gtk_widget_show(window);
}
#else /* !GTK_CHECK_VERSION(2, 6, 0) */
GtkWidget * vbox;
GtkWidget * hbox;
GtkWidget * button;
if(browser->ab_window != NULL)
{
gtk_widget_show(browser->ab_window);
return;
}
browser->ab_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
window = browser->ab_window;
gtk_container_set_border_width(GTK_CONTAINER(window), 4);
gtk_window_set_title(GTK_WINDOW(window), "About Browser");
gtk_window_set_transient_for(GTK_WINDOW(window), GTK_WINDOW(
browser->window));
g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(
_about_on_closex), window);
vbox = gtk_vbox_new(FALSE, 2);
gtk_box_pack_start(GTK_BOX(vbox), gtk_label_new(PACKAGE " " VERSION),
FALSE, FALSE, 2);
gtk_box_pack_start(GTK_BOX(vbox), gtk_label_new(_copyright), FALSE,
FALSE, 2);
hbox = gtk_hbox_new(TRUE, 4);
button = gtk_button_new_with_mnemonic("C_redits");
g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(
_about_on_credits), window);
gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, TRUE, 4);
button = gtk_button_new_with_mnemonic("_License");
g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(
_about_on_license), window);
gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, TRUE, 4);
button = gtk_button_new_from_stock(GTK_STOCK_CLOSE);
g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(
_about_on_close), window);
gtk_box_pack_end(GTK_BOX(hbox), button, FALSE, TRUE, 4);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 4);
gtk_container_add(GTK_CONTAINER(window), vbox);
gtk_widget_show_all(window);
}
#endif
static gboolean _about_on_closex(GtkWidget * widget, GdkEvent * event,
gpointer data)
{
gtk_widget_hide(widget);
return TRUE;
}
#if !GTK_CHECK_VERSION(2, 6, 0)
static void _about_on_close(GtkWidget * widget, gpointer data)
{
GtkWidget * window = data;
gtk_widget_hide(window);
}
static void _about_on_credits(GtkWidget * widget, gpointer data)
{
static GtkWidget * window = NULL;
GtkWidget * about = data;
GtkWidget * vbox;
GtkWidget * notebook;
GtkWidget * textview;
GtkTextBuffer * tbuf;
GtkTextIter iter;
GtkWidget * hbox;
size_t i;
if(window != NULL)
{
gtk_widget_show(window);
return;
}
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 200, 200);
gtk_container_set_border_width(GTK_CONTAINER(window), 4);
gtk_window_set_title(GTK_WINDOW(window), "Credits");
gtk_window_set_transient_for(GTK_WINDOW(window), GTK_WINDOW(about));
g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(
_about_on_closex), NULL);
vbox = gtk_vbox_new(FALSE, 0);
textview = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(textview), FALSE);
tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview));
gtk_text_buffer_set_text(tbuf, "", 0);
for(i = 0; _authors[i] != NULL; i++)
{
gtk_text_buffer_get_end_iter(tbuf, &iter);
gtk_text_buffer_insert(tbuf, &iter, _authors[i], strlen(
_authors[i]));
}
widget = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(widget),
GTK_SHADOW_IN);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_container_add(GTK_CONTAINER(widget), textview);
notebook = gtk_notebook_new();
gtk_notebook_append_page(GTK_NOTEBOOK(notebook), widget,
gtk_label_new("Written by"));
gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 4);
hbox = gtk_hbox_new(FALSE, 0);
widget = gtk_button_new_from_stock(GTK_STOCK_CLOSE);
g_signal_connect(G_OBJECT(widget), "clicked",
G_CALLBACK(_about_on_close), window);
gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, TRUE, 4);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 4);
gtk_container_add(GTK_CONTAINER(window), vbox);
gtk_widget_show_all(window);
}
static void _about_on_license(GtkWidget * widget, gpointer data)
{
static GtkWidget * window = NULL;
GtkWidget * about = data;
GtkWidget * vbox;
GtkWidget * textview;
GtkTextBuffer * tbuf;
GtkWidget * hbox;
if(window != NULL)
{
gtk_widget_show(window);
return;
}
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 200, 200);
gtk_container_set_border_width(GTK_CONTAINER(window), 4);
gtk_window_set_title(GTK_WINDOW(window), "License");
gtk_window_set_transient_for(GTK_WINDOW(window), GTK_WINDOW(about));
g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(
_about_on_closex), NULL);
vbox = gtk_vbox_new(FALSE, 0);
textview = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(textview), FALSE);
tbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview));
gtk_text_buffer_set_text(tbuf, _license, strlen(_license));
widget = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(widget),
GTK_SHADOW_IN);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_container_add(GTK_CONTAINER(widget), textview);
gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 4);
hbox = gtk_hbox_new(FALSE, 0);
widget = gtk_button_new_from_stock(GTK_STOCK_CLOSE);
g_signal_connect(G_OBJECT(widget), "clicked",
G_CALLBACK(_about_on_close), window);
gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, TRUE, 4);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 4);
gtk_container_add(GTK_CONTAINER(window), vbox);
gtk_widget_show_all(window);
}
#endif /* !GTK_CHECK_VERSION(2, 6, 0) */
/* usage */
static int _usage(void)
{
fputs("Usage: view file...\n", stderr);
return 1;
}
/* main */
int main(int argc, char * argv[])
{
int o;
int i;
gtk_init(&argc, &argv);
while((o = getopt(argc, argv, "")) != -1)
switch(o)
{
default:
return _usage();
}
if(optind == argc)
return _usage();
for(i = optind; i < argc; i++)
_view_new(argv[i]);
gtk_main();
return 0;
}