src/math-window.c

   1 /*
   2  * Copyright (C) 1987-2008 Sun Microsystems, Inc. All Rights Reserved.
   3  * Copyright (C) 2008-2011 Robert Ancell.
   4  *
   5  * This program is free software: you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License as published by the Free Software
   7  * Foundation, either version 2 of the License, or (at your option) any later
   8  * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
   9  * license.
  10  */
  11
  12 #include <glib/gi18n.h>
  13 #include <gtk/gtk.h>
  14 #include <gdk/gdkkeysyms.h>
  15
  16 #include "math-window.h"
  17 #include "math-preferences.h"
  18
  19 enum {
  20     PROP_0,
  21     PROP_EQUATION
  22 };
  23
  24 struct MathWindowPrivate
  25 {
  26     GtkWidget *menu_bar;
  27     MathEquation *equation;
  28     MathDisplay *display;
  29     MathButtons *buttons;
  30     MathPreferencesDialog *preferences_dialog;
  31     gboolean right_aligned;
  32     GtkWidget *mode_basic_menu_item, *mode_advanced_menu_item, *mode_financial_menu_item, *mode_programming_menu_item;
  33 };
  34
  35 G_DEFINE_TYPE (MathWindow, math_window, GTK_TYPE_WINDOW);
  36
  37 enum
  38 {
  39     QUIT,
  40     LAST_SIGNAL
  41 };
  42 static guint signals[LAST_SIGNAL] = { 0, };
  43
  44
  45 MathWindow *
  46 math_window_new(MathEquation *equation)
  47 {
  48     return g_object_new(math_window_get_type(), "equation", equation, NULL);
  49 }
  50
  51
  52 GtkWidget *
  53 math_window_get_menu_bar(MathWindow *window)
  54 {
  55     g_return_val_if_fail(window != NULL, NULL);
  56     return window->priv->menu_bar;
  57 }
  58
  59
  60 MathEquation *
  61 math_window_get_equation(MathWindow *window)
  62 {
  63     g_return_val_if_fail(window != NULL, NULL);
  64     return window->priv->equation;
  65 }
  66
  67
  68 MathDisplay *
  69 math_window_get_display(MathWindow *window)
  70 {
  71     g_return_val_if_fail(window != NULL, NULL);
  72     return window->priv->display;
  73 }
  74
  75
  76 MathButtons *
  77 math_window_get_buttons(MathWindow *window)
  78 {
  79     g_return_val_if_fail(window != NULL, NULL);
  80     return window->priv->buttons;
  81 }
  82
  83
  84 void
  85 math_window_critical_error(MathWindow *window, const gchar *title, const gchar *contents)
  86 {
  87     GtkWidget *dialog;
  88
  89     g_return_if_fail(window != NULL);
  90     g_return_if_fail(title != NULL);
  91     g_return_if_fail(contents != NULL);
  92
  93     dialog = gtk_message_dialog_new(NULL, 0,
  94                                     GTK_MESSAGE_ERROR,
  95                                     GTK_BUTTONS_NONE,
  96                                     "%s", title);
  97     gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
  98                                              "%s", contents);
  99     gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_QUIT, GTK_RESPONSE_ACCEPT, NULL);
 100
 101     gtk_dialog_run(GTK_DIALOG(dialog));
 102
 103     g_signal_emit(window, signals[QUIT], 0);
 104 }
 105
 106
 107 static void
 108 copy_cb(GtkWidget *widget, MathWindow *window)
 109 {
 110     math_equation_copy(window->priv->equation);
 111 }
 112
 113
 114 static void
 115 paste_cb(GtkWidget *widget, MathWindow *window)
 116 {
 117     math_equation_paste(window->priv->equation);
 118 }
 119
 120
 121 static void
 122 undo_cb(GtkWidget *widget, MathWindow *window)
 123 {
 124     math_equation_undo(window->priv->equation);
 125 }
 126
 127
 128 static void
 129 redo_cb(GtkWidget *widget, MathWindow *window)
 130 {
 131     math_equation_redo(window->priv->equation);
 132 }
 133
 134
 135 static void
 136 mode_changed_cb(GtkWidget *menu, MathWindow *window)
 137 {
 138     int mode;
 139
 140     if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(menu)))
 141         return;
 142
 143     mode = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(menu), "calcmode"));
 144     math_buttons_set_mode(window->priv->buttons, mode);
 145 }
 146
 147
 148 static void
 149 show_preferences_cb(GtkMenuItem *menu, MathWindow *window)
 150 {
 151     if (!window->priv->preferences_dialog) {
 152         window->priv->preferences_dialog = math_preferences_dialog_new(window->priv->equation);
 153         gtk_window_set_transient_for(GTK_WINDOW(window->priv->preferences_dialog), GTK_WINDOW(window));
 154     }
 155     gtk_window_present(GTK_WINDOW(window->priv->preferences_dialog));
 156 }
 157
 158
 159 static void
 160 help_cb(GtkWidget *widget, MathWindow *window)
 161 {
 162     GdkScreen *screen;
 163     GError *error = NULL;
 164
 165     screen = gtk_widget_get_screen(GTK_WIDGET(window));
 166     gtk_show_uri(screen, "ghelp:gcalctool", gtk_get_current_event_time(), &error);
 167
 168     if (error != NULL)
 169     {
 170         GtkWidget *d;
 171         /* Translators: Error message displayed when unable to launch help browser */
 172         const char *message = _("Unable to open help file");
 173
 174         d = gtk_message_dialog_new(GTK_WINDOW (window),
 175                                    GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
 176                                    GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
 177                                    "%s", message);
 178         gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG (d),
 179                                                  "%s", error->message);
 180         g_signal_connect(d, "response", G_CALLBACK(gtk_widget_destroy), NULL);
 181         gtk_window_present(GTK_WINDOW(d));
 182
 183         g_error_free(error);
 184     }
 185 }
 186
 187
 188 static void
 189 about_cb(GtkWidget *widget, MathWindow *window)
 190 {
 191     const gchar *authors[] = {
 192         "Rich Burridge <rich.burridge@gmail.com>",
 193         "Robert Ancell <robert.ancell@gmail.com>",
 194         "Klaus Niederkrüger <kniederk@umpa.ens-lyon.fr>",
 195         "Robin Sonefors <ozamosi@flukkost.nu>",
 196         NULL
 197     };
 198     const gchar *documenters[] = {
 199         "Sun Microsystems",
 200         NULL
 201     };
 202
 203     /* The translator credits. Please translate this with your name(s). */
 204     const gchar *translator_credits = _("translator-credits");
 205
 206     /* The license this software is under (GPL2+) */
 207     char *license = _("Gcalctool is free software; you can redistribute it and/or modify\n"
 208           "it under the terms of the GNU General Public License as published by\n"
 209           "the Free Software Foundation; either version 2 of the License, or\n"
 210           "(at your option) any later version.\n"
 211           "\n"
 212           "Gcalctool is distributed in the hope that it will be useful,\n"
 213           "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
 214           "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
 215           "GNU General Public License for more details.\n"
 216           "\n"
 217           "You should have received a copy of the GNU General Public License\n"
 218           "along with Gcalctool; if not, write to the Free Software Foundation, Inc.,\n"
 219           "51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA");
 220
 221     gtk_show_about_dialog(GTK_WINDOW(window),
 222                           "name",
 223                           /* Program name in the about dialog */
 224                           _("Gcalctool"),
 225                           "version", VERSION,
 226                           "copyright",
 227                           /* Copyright notice in the about dialog */
 228                           _("\xc2\xa9 1986–2010 The Gcalctool authors"),
 229                           "license", license,
 230                           "comments",
 231                           /* Short description in the about dialog */
 232                           _("Calculator with financial and scientific modes."),
 233                           "authors", authors,
 234                           "documenters", documenters,
 235                           "translator_credits", translator_credits,
 236                           "logo-icon-name", "accessories-calculator",
 237                           NULL);
 238 }
 239
 240
 241 static void
 242 quit_cb(GtkWidget *widget, MathWindow *window)
 243 {
 244     g_signal_emit(window, signals[QUIT], 0);
 245 }
 246
 247
 248 static gboolean
 249 key_press_cb(MathWindow *window, GdkEventKey *event)
 250 {
 251     gboolean result;
 252     g_signal_emit_by_name(window->priv->display, "key-press-event", event, &result);
 253     return result;
 254 }
 255
 256
 257 static void
 258 delete_cb(MathWindow *window, GdkEvent *event)
 259 {
 260     g_signal_emit(window, signals[QUIT], 0);
 261 }
 262
 263
 264 static void
 265 scroll_changed_cb(GtkAdjustment *adjustment, MathWindow *window)
 266 {
 267     if (window->priv->right_aligned)
 268         gtk_adjustment_set_value(adjustment, gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment));
 269 }
 270
 271
 272 static void
 273 scroll_value_changed_cb(GtkAdjustment *adjustment, MathWindow *window)
 274 {
 275     if (gtk_adjustment_get_value(adjustment) == gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment))
 276         window->priv->right_aligned = TRUE;
 277     else
 278         window->priv->right_aligned = FALSE;
 279 }
 280
 281
 282 static void
 283 button_mode_changed_cb(MathButtons *buttons, GParamSpec *spec, MathWindow *window)
 284 {
 285     GtkWidget *menu;
 286
 287     switch(math_buttons_get_mode(buttons))
 288     {
 289     default:
 290     case BASIC:
 291       menu = window->priv->mode_basic_menu_item;
 292       //FIXME: Should it revert to decimal mode? math_equation_set_number_format(window->priv->equation, DEC);
 293       break;
 294
 295     case ADVANCED:
 296       menu = window->priv->mode_advanced_menu_item;
 297       break;
 298
 299     case FINANCIAL:
 300       menu = window->priv->mode_financial_menu_item;
 301       break;
 302
 303     case PROGRAMMING:
 304       menu = window->priv->mode_programming_menu_item;
 305       break;
 306     }
 307     gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(menu), TRUE);
 308 }
 309
 310
 311 static GtkWidget *
 312 add_menu(GtkWidget *menu_bar, const gchar *name)
 313 {
 314     GtkWidget *menu_item, *menu;
 315
 316     menu_item = gtk_menu_item_new_with_mnemonic(name);
 317     gtk_menu_shell_append(GTK_MENU_SHELL(menu_bar), menu_item);
 318     gtk_widget_show(menu_item);
 319     menu = gtk_menu_new();
 320     gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), menu);
 321
 322     return menu;
 323 }
 324
 325
 326 static GtkWidget *
 327 add_menu_item(GtkWidget *menu, GtkWidget *menu_item, GCallback callback, gpointer callback_data)
 328 {
 329     gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
 330     gtk_widget_show(menu_item);
 331     if (callback)
 332         g_signal_connect(G_OBJECT(menu_item), "activate", callback, callback_data);
 333     return menu_item;
 334 }
 335
 336
 337 static GtkWidget *
 338 radio_menu_item_new(GSList **group, const gchar *name)
 339 {
 340     GtkWidget *menu_item;
 341     menu_item = gtk_radio_menu_item_new_with_mnemonic(*group, name);
 342     *group = gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(menu_item));
 343     return menu_item;
 344 }
 345
 346
 347 static void
 348 create_menu(MathWindow *window)
 349 {
 350     GtkAccelGroup *accel_group;
 351     GtkWidget *menu, *menu_item;
 352     GSList *group = NULL;
 353
 354     accel_group = gtk_accel_group_new();
 355     gtk_window_add_accel_group(GTK_WINDOW(window), accel_group);
 356
 357     /* Calculator menu */
 358     #define CALCULATOR_MENU_LABEL _("_Calculator")
 359     /* Mode menu */
 360     #define MODE_MENU_LABEL _("_Mode")
 361     /* Help menu label */
 362     #define HELP_MENU_LABEL _("_Help")
 363     /* Basic menu label */
 364     #define MODE_BASIC_LABEL _("_Basic")
 365     /* Advanced menu label */
 366     #define MODE_ADVANCED_LABEL _("_Advanced")
 367     /* Financial menu label */
 368     #define MODE_FINANCIAL_LABEL _("_Financial")
 369     /* Programming menu label */
 370     #define MODE_PROGRAMMING_LABEL _("_Programming")
 371     /* Help>Contents menu label */
 372     #define HELP_CONTENTS_LABEL _("_Contents")
 373
 374     menu = add_menu(window->priv->menu_bar, CALCULATOR_MENU_LABEL);
 375     add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_COPY, accel_group), G_CALLBACK(copy_cb), window);
 376     add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PASTE, accel_group), G_CALLBACK(paste_cb), window);
 377     menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_UNDO, accel_group), G_CALLBACK(undo_cb), window);
 378     gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_KEY_z, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);
 379     menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_REDO, accel_group), G_CALLBACK(redo_cb), window);
 380     gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_KEY_z, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_ACCEL_VISIBLE);
 381     add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL);
 382     add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PREFERENCES, accel_group), G_CALLBACK(show_preferences_cb), window);
 383     add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL);
 384     menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_QUIT, accel_group), G_CALLBACK(quit_cb), window);
 385     gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_KEY_w, GDK_CONTROL_MASK, 0);
 386
 387     menu = add_menu(window->priv->menu_bar, MODE_MENU_LABEL);
 388     window->priv->mode_basic_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_BASIC_LABEL), G_CALLBACK(mode_changed_cb), window);
 389     g_object_set_data(G_OBJECT(window->priv->mode_basic_menu_item), "calcmode", GINT_TO_POINTER(BASIC));
 390     window->priv->mode_advanced_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_ADVANCED_LABEL), G_CALLBACK(mode_changed_cb), window);
 391     g_object_set_data(G_OBJECT(window->priv->mode_advanced_menu_item), "calcmode", GINT_TO_POINTER(ADVANCED));
 392     window->priv->mode_financial_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_FINANCIAL_LABEL), G_CALLBACK(mode_changed_cb), window);
 393     g_object_set_data(G_OBJECT(window->priv->mode_financial_menu_item), "calcmode", GINT_TO_POINTER(FINANCIAL));
 394     window->priv->mode_programming_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_PROGRAMMING_LABEL), G_CALLBACK(mode_changed_cb), window);
 395     g_object_set_data(G_OBJECT(window->priv->mode_programming_menu_item), "calcmode", GINT_TO_POINTER(PROGRAMMING));
 396
 397     menu = add_menu(window->priv->menu_bar, HELP_MENU_LABEL);
 398     menu_item = add_menu_item(menu, gtk_menu_item_new_with_mnemonic(HELP_CONTENTS_LABEL), G_CALLBACK(help_cb), window);
 399     gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_KEY_F1, 0, GTK_ACCEL_VISIBLE);
 400     add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_ABOUT, accel_group), G_CALLBACK(about_cb), window);
 401 }
 402
 403
 404 static void
 405 create_gui(MathWindow *window)
 406 {
 407     GtkWidget *main_vbox, *vbox;
 408     GtkWidget *scrolled_window;
 409
 410     main_vbox = gtk_vbox_new(FALSE, 0);
 411     gtk_container_add(GTK_CONTAINER(window), main_vbox);
 412     gtk_widget_show(main_vbox);
 413
 414     window->priv->menu_bar = gtk_menu_bar_new();
 415     gtk_box_pack_start(GTK_BOX(main_vbox), window->priv->menu_bar, FALSE, FALSE, 0);
 416     gtk_widget_show(window->priv->menu_bar);
 417
 418     create_menu(window);
 419
 420     vbox = gtk_vbox_new(FALSE, 6);
 421     gtk_container_set_border_width(GTK_CONTAINER(vbox), 6);
 422     gtk_box_pack_start(GTK_BOX(main_vbox), vbox, TRUE, TRUE, 0);
 423     gtk_widget_show(vbox);
 424
 425     scrolled_window = gtk_scrolled_window_new(NULL, NULL);
 426     gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_NEVER);
 427     gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(scrolled_window), FALSE, FALSE, 0);
 428     g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "changed", G_CALLBACK(scroll_changed_cb), window);
 429     g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "value-changed", G_CALLBACK(scroll_value_changed_cb), window);
 430     window->priv->right_aligned = TRUE;
 431     gtk_widget_show(scrolled_window);
 432
 433     window->priv->display = math_display_new_with_equation(window->priv->equation);
 434     gtk_container_add(GTK_CONTAINER(scrolled_window), GTK_WIDGET(window->priv->display));
 435     gtk_widget_show(GTK_WIDGET(window->priv->display));
 436
 437     window->priv->buttons = math_buttons_new(window->priv->equation);
 438     g_signal_connect(window->priv->buttons, "notify::mode", G_CALLBACK(button_mode_changed_cb), window);
 439     button_mode_changed_cb(window->priv->buttons, NULL, window);
 440     gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(window->priv->buttons), TRUE, TRUE, 0);
 441     gtk_widget_show(GTK_WIDGET(window->priv->buttons));
 442 }
 443
 444
 445 static void
 446 math_window_set_property(GObject      *object,
 447                          guint         prop_id,
 448                          const GValue *value,
 449                          GParamSpec   *pspec)
 450 {
 451     MathWindow *self;
 452
 453     self = MATH_WINDOW(object);
 454
 455     switch (prop_id) {
 456     case PROP_EQUATION:
 457         self->priv->equation = g_value_get_object(value);
 458         create_gui(self);
 459         break;
 460     default:
 461         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 462         break;
 463     }
 464 }
 465
 466
 467 static void
 468 math_window_get_property(GObject    *object,
 469                          guint       prop_id,
 470                          GValue     *value,
 471                          GParamSpec *pspec)
 472 {
 473     MathWindow *self;
 474
 475     self = MATH_WINDOW(object);
 476
 477     switch (prop_id) {
 478     case PROP_EQUATION:
 479         g_value_set_object(value, self->priv->equation);
 480         break;
 481     default:
 482         G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
 483         break;
 484     }
 485 }
 486
 487
 488 static void
 489 math_window_class_init(MathWindowClass *klass)
 490 {
 491     GObjectClass *object_class = G_OBJECT_CLASS(klass);
 492
 493     object_class->get_property = math_window_get_property;
 494     object_class->set_property = math_window_set_property;
 495
 496     g_type_class_add_private(klass, sizeof(MathWindowPrivate));
 497
 498     g_object_class_install_property(object_class,
 499                                     PROP_EQUATION,
 500                                     g_param_spec_object("equation",
 501                                                         "equation",
 502                                                         "Equation being calculated",
 503                                                         math_equation_get_type(),
 504                                                         G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 505
 506     signals[QUIT] =
 507         g_signal_new("quit",
 508                      G_TYPE_FROM_CLASS (klass),
 509                      G_SIGNAL_RUN_LAST,
 510                      G_STRUCT_OFFSET (MathWindowClass, quit),
 511                      NULL, NULL,
 512                      g_cclosure_marshal_VOID__VOID,
 513                      G_TYPE_NONE, 0);
 514 }
 515
 516
 517 static void
 518 math_window_init(MathWindow *window)
 519 {
 520     window->priv = G_TYPE_INSTANCE_GET_PRIVATE(window, math_window_get_type(), MathWindowPrivate);
 521     gtk_window_set_title(GTK_WINDOW(window),
 522                          /* Title of main window */
 523                          _("Calculator"));
 524     gtk_window_set_icon_name(GTK_WINDOW(window), "accessories-calculator");
 525     gtk_window_set_role(GTK_WINDOW(window), "gcalctool");
 526     gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
 527     g_signal_connect_after(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_cb), NULL);
 528     g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(delete_cb), NULL);
 529 }