tazweb/main.c

   1 /*
   2  * TazWeb is a radically simple web browser providing a single window
   3  * with a single toolbar with buttons, an URL entry and search as well
   4  * as a contextual menu, but no menu bar or tabs. Commented line code
   5  * starts with // and comments are between * *
   6  *
   7  * Copyright (C) 2011 SliTaz GNU/Linux - BSD License
   8  * See AUTHORS and LICENSE for detailed information
   9  *
  10  */
  11
  12 #include <gtk/gtk.h>
  13 #include <webkit/webkit.h>
  14
  15 #define CONFIG   g_strdup_printf("%s/.config/tazweb", g_get_home_dir())
  16 #define START    "http://www.bing.com"
  17 #define SEARCH   "http://www.bing.com/search?q=%s&go=&qs=n&sk=&sc=7-5&form=QBLH"
  18
  19 /* Needs AppleWebKit/531.2+ to handle all sites ? */
  20 static gchar *useragent = "TazWeb (X11; SliTaz GNU/Linux; U; en_US)";
  21
  22 static GtkWidget* create_window(WebKitWebView** newwebview);
  23 static GtkWidget *mainwindow, *vbox, *browser, *toolbar;
  24 static WebKitWebView *webview;
  25 static WebKitWebFrame *frame;
  26 static gint count = 0;
  27 const gchar* uri;
  28
  29 /* Create an icon */
  30 static GdkPixbuf*
  31 create_pixbuf(const gchar* image)
  32 {
  33         GdkPixbuf *pixbuf;
  34         pixbuf = gdk_pixbuf_new_from_file(image, NULL);
  35         return pixbuf;
  36 }
  37
  38 /* Can be: http://hg.slitaz.org or hg.slitaz.org */
  39 static void
  40 check_requested_uri()
  41 {
  42         uri = g_strrstr(uri, "://") ? g_strdup(uri)
  43                 : g_strdup_printf("http://%s", uri);
  44 }
  45
  46 /* Update title */
  47 static void
  48 update_title(GtkWindow* window, WebKitWebView* webview)
  49 {
  50         GString *string;
  51         gdouble progress;
  52         gchar *title;
  53
  54         string = g_string_new(webkit_web_view_get_title(webview));
  55         progress = webkit_web_view_get_progress(webview) * 100;
  56         if (progress < 100)
  57                 g_string_append_printf(string, " [ %f%% ] ", progress);
  58
  59         title = g_string_free(string, FALSE);
  60         gtk_window_set_title(window, title);
  61         g_free(title);
  62 }
  63
  64 /* Get the page title */
  65 static void
  66 notify_title_cb(WebKitWebView* webview, GParamSpec* pspec, GtkWidget* window)
  67 {
  68         update_title(GTK_WINDOW(window), webview);
  69 }
  70
  71 /* Request progress in window title */
  72 static void
  73 notify_progress_cb(WebKitWebView* webview, GParamSpec* pspec, GtkWidget* window)
  74 {
  75         update_title(GTK_WINDOW(window), webview);
  76 }
  77
  78 /* Notify url entry */
  79 static void
  80 notify_load_status_cb(WebKitWebView* webview, GParamSpec* pspec, GtkWidget* urientry)
  81 {
  82         if (webkit_web_view_get_load_status(webview) == WEBKIT_LOAD_COMMITTED) {
  83                 frame = webkit_web_view_get_main_frame(webview);
  84                 uri = webkit_web_frame_get_uri(frame);
  85                 if (uri)
  86                         gtk_entry_set_text(GTK_ENTRY(urientry), uri);
  87         }
  88 }
  89
  90 /* Destroy the window */
  91 static void
  92 destroy_cb(GtkWidget* widget, GtkWindow* window)
  93 {
  94         if (g_atomic_int_dec_and_test(&count))
  95                 gtk_main_quit();
  96 }
  97
  98 /* Show page source */
  99 static void
 100 view_source_cb(GtkWidget* widget, WebKitWebView* webview)
 101 {
 102         gboolean source;
 103
 104         frame = webkit_web_view_get_main_frame(webview);
 105         uri = webkit_web_frame_get_uri(frame);
 106         source = webkit_web_view_get_view_source_mode(webview);
 107
 108         webkit_web_view_set_view_source_mode(webview, !source);
 109         webkit_web_view_reload(webview);
 110 }
 111
 112 /* URL entry callback function */
 113 static void
 114 uri_entry_cb(GtkWidget* urientry, WebKitWebView* webview)
 115 {
 116         uri = gtk_entry_get_text(GTK_ENTRY(urientry));
 117         g_assert(uri);
 118         check_requested_uri();
 119         webkit_web_view_load_uri(webview, uri);
 120 }
 121
 122 /* Search entry and icon callback function */
 123 static void
 124 search_web(GtkWidget* search, WebKitWebView* webview)
 125 {
 126         uri = g_strdup_printf(SEARCH, gtk_entry_get_text(GTK_ENTRY(search)));
 127         g_assert(uri);
 128         webkit_web_view_load_uri(webview, uri);
 129 }
 130
 131 static void
 132 search_entry_cb(GtkWidget* search, WebKitWebView* webview)
 133 {
 134         search_web(search, webview);
 135 }
 136
 137 static void
 138 search_icon_press_cb(GtkWidget *search, GtkEntryIconPosition pos,
 139                 GdkEvent *event, WebKitWebView* webview)
 140 {
 141     search_web(search, webview);
 142 }
 143
 144 /* Navigation button function */
 145 static void
 146 go_home_cb(GtkWidget* widget, WebKitWebView* webview)
 147 {
 148         uri = g_strdup_printf("file://%s/home.html", CONFIG);
 149         g_assert(uri);
 150         webkit_web_view_load_uri(webview, uri);
 151 }
 152
 153 static void
 154 go_back_cb(GtkWidget* widget, WebKitWebView* webview)
 155 {
 156     webkit_web_view_go_back(webview);
 157 }
 158
 159 static void
 160 go_forward_cb(GtkWidget* widget, WebKitWebView* webview)
 161 {
 162     webkit_web_view_go_forward(webview);
 163 }
 164
 165 /* Fullscreen and unfullscreen callback function */
 166 //static void
 167 //fullscreen_cb(GtkWindow* window, gpointer data)
 168 //{
 169         //GdkWindowState state;
 170         //state = gdk_window_get_state(gtk_widget_get_window(GTK_WIDGET(mainwindow)));
 171
 172         //if(state & GDK_WINDOW_STATE_FULLSCREEN)
 173                 //gtk_window_unfullscreen(GTK_WINDOW(mainwindow));
 174         //else
 175                 //gtk_window_fullscreen(GTK_WINDOW(mainwindow));
 176 //}
 177
 178 /* TazWeb doc callback function */
 179 static void
 180 tazweb_doc_cb(GtkWidget* widget, WebKitWebView *webview)
 181 {
 182         uri = ("file:///usr/share/doc/tazweb/tazweb.html");
 183         g_assert(uri);
 184         webkit_web_view_load_uri(webview, uri);
 185 }
 186
 187 /* Download function */
 188 static gboolean
 189 download_requested_cb(WebKitWebView *webview, WebKitDownload *download,
 190                 gpointer user_data)
 191 {
 192         const gchar* buffer;
 193         uri = webkit_download_get_uri(download);
 194         asprintf(&buffer, "xterm -T 'Download' -geom 72x10+0-24 -e \
 195                                 'mkdir -p $HOME/Downloads && cd $HOME/Downloads && \
 196                                 wget -c %s; sleep 2' &", uri);
 197         system(buffer);
 198 }
 199
 200 /* Zoom out and in callback function */
 201 static void
 202 zoom_out_cb(GtkWidget *widget, WebKitWebView* webview)
 203 {
 204         webkit_web_view_zoom_out(webview);
 205 }
 206
 207 static void
 208 zoom_in_cb(GtkWidget *widget, WebKitWebView* webview)
 209 {
 210         webkit_web_view_zoom_in(webview);
 211 }
 212
 213 /* Printing callback function */
 214 static void
 215 print_page_cb (GtkWidget *widget, gpointer data)
 216 {
 217     webkit_web_frame_print (webkit_web_view_get_main_frame (
 218         WEBKIT_WEB_VIEW (webview)));
 219 }
 220
 221 /* New webview callbacks */
 222 static WebKitWebView*
 223 create_web_view_cb(WebKitWebView* webview, WebKitWebFrame* web_frame,
 224                 GtkWidget* window)
 225 {
 226         WebKitWebView *newview;
 227         create_window(&newview);
 228         return newview;
 229 }
 230
 231 static gboolean
 232 webview_ready_cb(WebKitWebView* webview, GtkWidget* window)
 233 {
 234         gtk_widget_grab_focus(GTK_WIDGET(webview));
 235         gtk_widget_show_all(window);
 236         return FALSE;
 237 }
 238
 239 static gboolean
 240 close_webview_cb(WebKitWebView* webview, GtkWidget* window)
 241 {
 242         gtk_widget_destroy(window);
 243         return TRUE;
 244 }
 245
 246 /* Add a bookmark to home.html */
 247 void
 248 add_bookmark_cb(GtkWidget *widget, gpointer data)
 249 {
 250         const gchar* title;
 251         const gchar* buffer;
 252
 253         title = webkit_web_view_get_title(WEBKIT_WEB_VIEW (webview));
 254         uri = webkit_web_view_get_uri(WEBKIT_WEB_VIEW (webview));
 255
 256         asprintf(&buffer, "sed -i \
 257                         -e '/<!-- end:bookmarks -->/ i <li><a href=\"%s\">%s</a></li>' \
 258                         -e s'/^<li>/    <li>/' $HOME/.config/tazweb/home.html &",
 259                         uri, title);
 260         system(buffer);
 261 }
 262
 263 /* Add items to WebKit contextual menu */
 264 static void
 265 populate_menu_cb(WebKitWebView *webview, GtkMenu *menu, gpointer data)
 266 {
 267         GtkWidget* item;
 268
 269         /* Separator */
 270         item = gtk_separator_menu_item_new();
 271         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 272
 273         /* Zoom in */
 274         item = gtk_image_menu_item_new_with_label("Zoom in");
 275         gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item),
 276         gtk_image_new_from_stock(GTK_STOCK_ZOOM_IN, GTK_ICON_SIZE_MENU));
 277         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 278         g_signal_connect(item, "activate", G_CALLBACK(zoom_in_cb), webview);
 279
 280         /* Zoom out */
 281         item = gtk_image_menu_item_new_with_label("Zoom out");
 282         gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item),
 283         gtk_image_new_from_stock(GTK_STOCK_ZOOM_OUT, GTK_ICON_SIZE_MENU));
 284         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 285         g_signal_connect(item, "activate", G_CALLBACK(zoom_out_cb), webview);
 286
 287         /* Separator */
 288         item = gtk_separator_menu_item_new();
 289         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 290
 291         /* Add to bookmarks */
 292         item = gtk_image_menu_item_new_with_label("Add a bookmark");
 293         gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item),
 294         gtk_image_new_from_stock(GTK_STOCK_ADD, GTK_ICON_SIZE_MENU));
 295         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 296         g_signal_connect(item, "activate", G_CALLBACK(add_bookmark_cb), webview);
 297
 298         /* Separator */
 299         item = gtk_separator_menu_item_new();
 300         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 301
 302         /* View source mode */
 303         item = gtk_image_menu_item_new_with_label("View source mode");
 304         gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item),
 305         gtk_image_new_from_stock(GTK_STOCK_PROPERTIES, GTK_ICON_SIZE_MENU));
 306         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 307         g_signal_connect(item, "activate", G_CALLBACK(view_source_cb), webview);
 308
 309         /* Printing */
 310         item = gtk_image_menu_item_new_with_label("Print this page");
 311         gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item),
 312         gtk_image_new_from_stock(GTK_STOCK_PRINT, GTK_ICON_SIZE_MENU));
 313         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 314         g_signal_connect(item, "activate", G_CALLBACK(print_page_cb), webview);
 315
 316         /* Separator */
 317         item = gtk_separator_menu_item_new();
 318         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 319
 320         /* TazWeb documentation */
 321         item = gtk_image_menu_item_new_with_label("TazWeb manual");
 322         gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(item),
 323         gtk_image_new_from_stock(GTK_STOCK_HELP, GTK_ICON_SIZE_MENU));
 324         gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
 325         g_signal_connect(item, "activate", G_CALLBACK(tazweb_doc_cb), webview);
 326
 327         gtk_widget_show_all(GTK_WIDGET(menu));
 328 }
 329
 330 /* Scrolled window for the webview */
 331 static GtkWidget*
 332 create_browser(GtkWidget* window, GtkWidget* urientry, GtkWidget* search,
 333                 WebKitWebView* webview)
 334 {
 335         WebKitWebSettings *settings;
 336
 337         browser = gtk_scrolled_window_new(NULL, NULL);
 338         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(browser),
 339                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 340
 341         gtk_container_add(GTK_CONTAINER(browser), GTK_WIDGET(webview));
 342
 343         /* User agent */
 344         settings = webkit_web_view_get_settings (webview);
 345         g_object_set(G_OBJECT(settings), "user-agent", useragent, NULL);
 346
 347         /* Connect WebKit events */
 348         g_signal_connect(webview, "notify::title",
 349                         G_CALLBACK(notify_title_cb), window);
 350         g_signal_connect(webview, "notify::progress",
 351                         G_CALLBACK(notify_progress_cb), window);
 352         g_signal_connect(webview, "notify::load-status",
 353                         G_CALLBACK(notify_load_status_cb), urientry);
 354         g_signal_connect(webview, "download-requested",
 355                         G_CALLBACK(download_requested_cb), NULL);
 356         g_signal_connect(webview, "create-web-view",
 357                         G_CALLBACK(create_web_view_cb), window);
 358         g_signal_connect(webview, "web-view-ready",
 359                         G_CALLBACK(webview_ready_cb), window);
 360         g_signal_connect(webview, "close-web-view",
 361                         G_CALLBACK(close_webview_cb), window);
 362
 363         /* Connect WebKit contextual menu items */
 364         g_object_connect(G_OBJECT(webview), "signal::populate-popup",
 365                 G_CALLBACK(populate_menu_cb), webview, NULL);
 366
 367         return browser;
 368 }
 369
 370 static GtkWidget*
 371 create_toolbar(GtkWidget* urientry, GtkWidget* search, WebKitWebView* webview)
 372 {
 373         GtkToolItem* item;
 374
 375         toolbar = gtk_toolbar_new();
 376         gtk_toolbar_set_orientation(GTK_TOOLBAR(toolbar),
 377                         GTK_ORIENTATION_HORIZONTAL);
 378         gtk_toolbar_set_style(GTK_TOOLBAR(toolbar),
 379                         GTK_TOOLBAR_BOTH_HORIZ);
 380
 381         /* The back button */
 382     item = gtk_tool_button_new_from_stock(GTK_STOCK_GO_BACK);
 383     g_signal_connect(G_OBJECT(item), "clicked",
 384                         G_CALLBACK(go_back_cb), webview);
 385     gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 386
 387     /* The forward button */
 388     item = gtk_tool_button_new_from_stock(GTK_STOCK_GO_FORWARD);
 389     g_signal_connect(G_OBJECT(item), "clicked",
 390                         G_CALLBACK(go_forward_cb), webview);
 391     gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 392
 393     /* Home button */
 394         item = gtk_tool_button_new_from_stock(GTK_STOCK_HOME);
 395         g_signal_connect(G_OBJECT(item), "clicked",
 396                         G_CALLBACK(go_home_cb), webview);
 397         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 398
 399         /* URL entry */
 400         item = gtk_tool_item_new();
 401         gtk_tool_item_set_expand(item, TRUE);
 402         gtk_widget_set_size_request(urientry, 0, 33);
 403         gtk_container_add(GTK_CONTAINER(item), urientry);
 404         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 405         g_signal_connect(G_OBJECT(urientry), "activate",
 406                         G_CALLBACK(uri_entry_cb), webview);
 407
 408         /* Separator */
 409         item = gtk_separator_tool_item_new();
 410         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 411
 412         /* Search entry */
 413         item = gtk_tool_item_new();
 414         gtk_widget_set_size_request(search, 300, 33);
 415         gtk_container_add(GTK_CONTAINER(item), search);
 416         gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 417         gtk_entry_set_icon_from_stock(GTK_ENTRY(search),
 418                         GTK_ENTRY_ICON_SECONDARY, GTK_STOCK_FIND);
 419         g_signal_connect(GTK_ENTRY(search), "icon-press",
 420                         G_CALLBACK(search_icon_press_cb), webview);
 421         g_signal_connect(G_OBJECT(search), "activate",
 422                         G_CALLBACK(search_entry_cb), webview);
 423
 424         /* The Fullscreen button */
 425         //item = gtk_tool_button_new_from_stock(GTK_STOCK_FULLSCREEN);
 426         //g_signal_connect(G_OBJECT(item), "clicked",
 427                         //G_CALLBACK(fullscreen_cb), NULL);
 428         //gtk_toolbar_insert(GTK_TOOLBAR(toolbar), item, -1);
 429
 430         return toolbar;
 431 }
 432
 433 /* Main window */
 434 static GtkWidget*
 435 create_window(WebKitWebView** newwebview)
 436 {
 437         GtkWidget *window;
 438         GtkWidget *urientry;
 439         GtkWidget *search;
 440
 441         g_atomic_int_inc(&count);
 442
 443         /* Default TazWeb window */
 444         window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 445         gtk_window_set_default_size(GTK_WINDOW(window), 1280, 1024);
 446         gtk_window_set_icon(GTK_WINDOW(window),
 447                         create_pixbuf("/usr/share/pixmaps/tazweb.png"));
 448         gtk_widget_set_name(window, "TazWeb");
 449         g_signal_connect(window, "destroy", G_CALLBACK(destroy_cb), NULL);
 450
 451         /* Webview and widgets */
 452         webview = WEBKIT_WEB_VIEW(webkit_web_view_new());
 453         urientry = gtk_entry_new();
 454         search = gtk_entry_new();
 455         vbox = gtk_vbox_new(FALSE, 0);
 456
 457         /* Pack box and container */
 458         gtk_box_pack_start(GTK_BOX(vbox),
 459                         create_browser(window, urientry, search, webview), TRUE, TRUE, 0);
 460         gtk_box_pack_start(GTK_BOX(vbox),
 461                         create_toolbar(urientry, search, webview), FALSE, FALSE, 0);
 462         gtk_container_add(GTK_CONTAINER(window), vbox);
 463
 464         if (newwebview)
 465                 *newwebview = webview;
 466
 467         return window;
 468 }
 469
 470 int
 471 main(int argc, char* argv[])
 472 {
 473         gtk_init(NULL, NULL);
 474         if (!g_thread_supported())
 475                 g_thread_init(NULL);
 476
 477         /* Get a default home.html if missing */
 478         if (! g_file_test(CONFIG, G_FILE_TEST_EXISTS))
 479                 system("cp -r /usr/share/tazweb $HOME/.config/tazweb");
 480
 481         /* Load the start page file or the url in argument */
 482         uri =(char*)(argc > 1 ? argv[1] : START);
 483         if (argv[1])
 484                 check_requested_uri();
 485
 486         mainwindow = create_window(&webview);
 487
 488         gtk_widget_show_all(mainwindow);
 489         webkit_web_view_load_uri(webview, uri);
 490         gtk_widget_grab_focus(GTK_WIDGET(webview));
 491         gtk_main();
 492
 493         return 0;
 494 }