diff options
Diffstat (limited to 'src/math-window.c')
| -rw-r--r-- | src/math-window.c | 527 |
1 files changed, 527 insertions, 0 deletions
diff --git a/src/math-window.c b/src/math-window.c new file mode 100644 index 0000000..0daf030 --- /dev/null +++ b/src/math-window.c @@ -0,0 +1,527 @@ +/* Copyright (c) 1987-2008 Sun Microsystems, Inc. All Rights Reserved. + * Copyright (c) 2008-2009 Robert Ancell + * + * 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, 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 <glib/gi18n.h> +#include <gtk/gtk.h> +#include <gdk/gdkkeysyms.h> + +#include "math-window.h" +#include "math-preferences.h" + +enum { + PROP_0, + PROP_EQUATION +}; + +struct MathWindowPrivate +{ + GtkWidget *menu_bar; + MathEquation *equation; + MathDisplay *display; + MathButtons *buttons; + MathPreferencesDialog *preferences_dialog; + gboolean right_aligned; + GtkWidget *mode_basic_menu_item, *mode_advanced_menu_item, *mode_financial_menu_item, *mode_programming_menu_item; +}; + +G_DEFINE_TYPE (MathWindow, math_window, GTK_TYPE_WINDOW); + +enum { + QUIT, + LAST_SIGNAL +}; +static guint signals[LAST_SIGNAL] = { 0, }; + + +MathWindow * +math_window_new(MathEquation *equation) +{ + return g_object_new (math_window_get_type(), "equation", equation, NULL); +} + + +GtkWidget * +math_window_get_menu_bar(MathWindow *window) +{ + return window->priv->menu_bar; +} + + +MathEquation *math_window_get_equation(MathWindow *window) +{ + return window->priv->equation; +} + + +MathDisplay * +math_window_get_display(MathWindow *window) +{ + return window->priv->display; +} + + +MathButtons * +math_window_get_buttons(MathWindow *window) +{ + return window->priv->buttons; +} + + +void +math_window_critical_error(MathWindow *window, const gchar *title, const gchar *contents) +{ + GtkWidget *dialog; + + dialog = gtk_message_dialog_new(NULL, 0, + GTK_MESSAGE_ERROR, + GTK_BUTTONS_NONE, + "%s", title); + gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), + "%s", contents); + gtk_dialog_add_buttons(GTK_DIALOG(dialog), GTK_STOCK_QUIT, GTK_RESPONSE_ACCEPT, NULL); + + gtk_dialog_run(GTK_DIALOG(dialog)); + + g_signal_emit(window, signals[QUIT], 0); +} + + +static void +copy_cb(GtkWidget *widget, MathWindow *window) +{ + math_equation_copy (window->priv->equation); +} + + +static void +paste_cb(GtkWidget *widget, MathWindow *window) +{ + math_equation_paste (window->priv->equation); +} + + +static void +undo_cb(GtkWidget *widget, MathWindow *window) +{ + math_equation_undo(window->priv->equation); +} + + +static void +redo_cb(GtkWidget *widget, MathWindow *window) +{ + math_equation_redo(window->priv->equation); +} + + +static void +mode_changed_cb(GtkWidget *menu, MathWindow *window) +{ + int mode; + + if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(menu))) + return; + + mode = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(menu), "calcmode")); + math_buttons_set_mode(window->priv->buttons, mode); +} + + +static void +show_preferences_cb(GtkMenuItem *menu, MathWindow *window) +{ + if (!window->priv->preferences_dialog) { + window->priv->preferences_dialog = math_preferences_dialog_new(window->priv->equation); + gtk_window_set_transient_for(GTK_WINDOW(window->priv->preferences_dialog), GTK_WINDOW(window)); + } + gtk_window_present(GTK_WINDOW(window->priv->preferences_dialog)); +} + + +static void +help_cb(GtkWidget *widget, MathWindow *window) +{ + GdkScreen *screen; + GError *error = NULL; + + screen = gtk_widget_get_screen (GTK_WIDGET (window)); + gtk_show_uri (screen, "ghelp:gcalctool", gtk_get_current_event_time (), &error); + + if (error != NULL) + { + GtkWidget *d; + /* Translators: Error message displayed when unable to launch help browser */ + const char *message = _("Unable to open help file"); + + d = gtk_message_dialog_new (GTK_WINDOW (window), + GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT, + GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, + "%s", message); + gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (d), + "%s", error->message); + g_signal_connect (d, "response", G_CALLBACK (gtk_widget_destroy), NULL); + gtk_window_present (GTK_WINDOW (d)); + + g_error_free (error); + } +} + + +static void +about_cb(GtkWidget *widget, MathWindow *window) +{ + const gchar *authors[] = { + "Rich Burridge <[email protected]>", + "Robert Ancell <[email protected]>", + "Klaus Niederkrüger <[email protected]>", + NULL + }; + const gchar *documenters[] = { + "Sun Microsystems", + NULL + }; + + /* The translator credits. Please translate this with your name(s). */ + const gchar *translator_credits = _("translator-credits"); + + /* The license this software is under (GPL2+) */ + char *license = _("Gcalctool is free software; you can redistribute it and/or modify\n" + "it under the terms of the GNU General Public License as published by\n" + "the Free Software Foundation; either version 2 of the License, or\n" + "(at your option) any later version.\n" + "\n" + "Gcalctool is distributed in the hope that it will be useful,\n" + "but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + "GNU General Public License for more details.\n" + "\n" + "You should have received a copy of the GNU General Public License\n" + "along with Gcalctool; if not, write to the Free Software Foundation, Inc.,\n" + "51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA"); + + gtk_show_about_dialog(GTK_WINDOW(window), + "name", + /* Program name in the about dialog */ + _("Gcalctool"), + "version", VERSION, + "copyright", + /* Copyright notice in the about dialog */ + _("\xc2\xa9 1986–2010 The Gcalctool authors"), + "license", license, + "comments", + /* Short description in the about dialog */ + _("Calculator with financial and scientific modes."), + "authors", authors, + "documenters", documenters, + "translator_credits", translator_credits, + "logo-icon-name", "accessories-calculator", + NULL); +} + + +static void +quit_cb(GtkWidget *widget, MathWindow *window) +{ + g_signal_emit(window, signals[QUIT], 0); +} + + +static gboolean +key_press_cb(MathWindow *window, GdkEventKey *event) +{ + gboolean result; + g_signal_emit_by_name(window->priv->display, "key-press-event", event, &result); + return result; +} + + +static void +delete_cb(MathWindow *window, GdkEvent *event) +{ + g_signal_emit(window, signals[QUIT], 0); +} + + +static void +scroll_changed_cb(GtkAdjustment *adjustment, MathWindow *window) +{ + if (window->priv->right_aligned) + gtk_adjustment_set_value(adjustment, gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment)); +} + + +static void +scroll_value_changed_cb(GtkAdjustment *adjustment, MathWindow *window) +{ + if (gtk_adjustment_get_value(adjustment) == gtk_adjustment_get_upper(adjustment) - gtk_adjustment_get_page_size(adjustment)) + window->priv->right_aligned = TRUE; + else + window->priv->right_aligned = FALSE; +} + + +static void +button_mode_changed_cb(MathButtons *buttons, GParamSpec *spec, MathWindow *window) +{ + GtkWidget *menu; + + switch(math_buttons_get_mode(buttons)) + { + default: + case BASIC: + menu = window->priv->mode_basic_menu_item; + //FIXME: Should it revert to decimal mode? math_equation_set_number_format(window->priv->equation, DEC); + break; + + case ADVANCED: + menu = window->priv->mode_advanced_menu_item; + break; + + case FINANCIAL: + menu = window->priv->mode_financial_menu_item; + break; + + case PROGRAMMING: + menu = window->priv->mode_programming_menu_item; + break; + } + gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(menu), TRUE); +} + + +static GtkWidget * +add_menu(GtkWidget *menu_bar, const gchar *name) +{ + GtkWidget *menu_item, *menu; + + menu_item = gtk_menu_item_new_with_mnemonic(name); + gtk_menu_shell_append(GTK_MENU_SHELL(menu_bar), menu_item); + gtk_widget_show(menu_item); + menu = gtk_menu_new(); + gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), menu); + + return menu; +} + + +static GtkWidget * +add_menu_item(GtkWidget *menu, GtkWidget *menu_item, GCallback callback, gpointer callback_data) +{ + gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item); + gtk_widget_show(menu_item); + if (callback) + g_signal_connect(G_OBJECT(menu_item), "activate", callback, callback_data); + return menu_item; +} + + +static GtkWidget * +radio_menu_item_new(GSList **group, const gchar *name) +{ + GtkWidget *menu_item; + menu_item = gtk_radio_menu_item_new_with_mnemonic(*group, name); + *group = gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(menu_item)); + return menu_item; +} + + +static void +create_menu(MathWindow *window) +{ + GtkAccelGroup *accel_group; + GtkWidget *menu, *menu_item; + GSList *group = NULL; + + accel_group = gtk_accel_group_new(); + gtk_window_add_accel_group(GTK_WINDOW(window), accel_group); + + /* Calculator menu */ + #define CALCULATOR_MENU_LABEL _("_Calculator") + /* Mode menu */ + #define MODE_MENU_LABEL _("_Mode") + /* Help menu label */ + #define HELP_MENU_LABEL _("_Help") + /* Basic menu label */ + #define MODE_BASIC_LABEL _("_Basic") + /* Advanced menu label */ + #define MODE_ADVANCED_LABEL _("_Advanced") + /* Financial menu label */ + #define MODE_FINANCIAL_LABEL _("_Financial") + /* Programming menu label */ + #define MODE_PROGRAMMING_LABEL _("_Programming") + /* Help>Contents menu label */ + #define HELP_CONTENTS_LABEL _("_Contents") + + menu = add_menu(window->priv->menu_bar, CALCULATOR_MENU_LABEL); + add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_COPY, accel_group), G_CALLBACK(copy_cb), window); + add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PASTE, accel_group), G_CALLBACK(paste_cb), window); + menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_UNDO, accel_group), G_CALLBACK(undo_cb), window); + gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_z, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE); + menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_REDO, accel_group), G_CALLBACK(redo_cb), window); + gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_z, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_ACCEL_VISIBLE); + add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL); + add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_PREFERENCES, accel_group), G_CALLBACK(show_preferences_cb), window); + add_menu_item(menu, gtk_separator_menu_item_new(), NULL, NULL); + menu_item = add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_QUIT, accel_group), G_CALLBACK(quit_cb), window); + gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_w, GDK_CONTROL_MASK, 0); + + menu = add_menu(window->priv->menu_bar, MODE_MENU_LABEL); + window->priv->mode_basic_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_BASIC_LABEL), G_CALLBACK(mode_changed_cb), window); + g_object_set_data(G_OBJECT(window->priv->mode_basic_menu_item), "calcmode", GINT_TO_POINTER(BASIC)); + window->priv->mode_advanced_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_ADVANCED_LABEL), G_CALLBACK(mode_changed_cb), window); + g_object_set_data(G_OBJECT(window->priv->mode_advanced_menu_item), "calcmode", GINT_TO_POINTER(ADVANCED)); + window->priv->mode_financial_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_FINANCIAL_LABEL), G_CALLBACK(mode_changed_cb), window); + g_object_set_data(G_OBJECT(window->priv->mode_financial_menu_item), "calcmode", GINT_TO_POINTER(FINANCIAL)); + window->priv->mode_programming_menu_item = add_menu_item(menu, radio_menu_item_new(&group, MODE_PROGRAMMING_LABEL), G_CALLBACK(mode_changed_cb), window); + g_object_set_data(G_OBJECT(window->priv->mode_programming_menu_item), "calcmode", GINT_TO_POINTER(PROGRAMMING)); + + menu = add_menu(window->priv->menu_bar, HELP_MENU_LABEL); + menu_item = add_menu_item(menu, gtk_menu_item_new_with_mnemonic(HELP_CONTENTS_LABEL), G_CALLBACK(help_cb), window); + gtk_widget_add_accelerator(menu_item, "activate", accel_group, GDK_F1, 0, GTK_ACCEL_VISIBLE); + add_menu_item(menu, gtk_image_menu_item_new_from_stock(GTK_STOCK_ABOUT, accel_group), G_CALLBACK(about_cb), window); +} + + +static void +create_gui(MathWindow *window) +{ + GtkWidget *main_vbox, *vbox; + GtkWidget *scrolled_window; + + main_vbox = gtk_vbox_new(FALSE, 0); + gtk_container_add(GTK_CONTAINER(window), main_vbox); + gtk_widget_show(main_vbox); + + window->priv->menu_bar = gtk_menu_bar_new(); + gtk_box_pack_start(GTK_BOX(main_vbox), window->priv->menu_bar, TRUE, TRUE, 0); + gtk_widget_show(window->priv->menu_bar); + + create_menu(window); + + vbox = gtk_vbox_new(FALSE, 6); + gtk_container_set_border_width(GTK_CONTAINER(vbox), 6); + gtk_box_pack_start(GTK_BOX(main_vbox), vbox, TRUE, TRUE, 0); + gtk_widget_show(vbox); + + scrolled_window = gtk_scrolled_window_new(NULL, NULL); + gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_NEVER); + gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled_window), GTK_SHADOW_IN); + gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(scrolled_window), TRUE, TRUE, 0); + g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "changed", G_CALLBACK(scroll_changed_cb), window); + g_signal_connect(gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(scrolled_window)), "value-changed", G_CALLBACK(scroll_value_changed_cb), window); + window->priv->right_aligned = TRUE; + gtk_widget_show(scrolled_window); + + window->priv->display = math_display_new_with_equation(window->priv->equation); + gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled_window), GTK_WIDGET(window->priv->display)); + gtk_widget_show(GTK_WIDGET(window->priv->display)); + + window->priv->buttons = math_buttons_new(window->priv->equation); + g_signal_connect(window->priv->buttons, "notify::mode", G_CALLBACK(button_mode_changed_cb), window); + button_mode_changed_cb(window->priv->buttons, NULL, window); + gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(window->priv->buttons), TRUE, TRUE, 0); + gtk_widget_show(GTK_WIDGET(window->priv->buttons)); +} + + +static void +math_window_set_property(GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + MathWindow *self; + + self = MATH_WINDOW (object); + + switch (prop_id) { + case PROP_EQUATION: + self->priv->equation = g_value_get_object (value); + create_gui(self); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + + +static void +math_window_get_property(GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + MathWindow *self; + + self = MATH_WINDOW (object); + + switch (prop_id) { + case PROP_EQUATION: + g_value_set_object (value, self->priv->equation); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + + +static void +math_window_class_init (MathWindowClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->get_property = math_window_get_property; + object_class->set_property = math_window_set_property; + + g_type_class_add_private (klass, sizeof (MathWindowPrivate)); + + g_object_class_install_property(object_class, + PROP_EQUATION, + g_param_spec_object("equation", + "equation", + "Equation being calculated", + math_equation_get_type(), + G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); + + signals[QUIT] = + g_signal_new ("quit", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (MathWindowClass, quit), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); +} + + +static void +math_window_init(MathWindow *window) +{ + window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, math_window_get_type(), MathWindowPrivate); + gtk_window_set_title(GTK_WINDOW(window), + /* Title of main window */ + _("Calculator")); + gtk_window_set_icon_name(GTK_WINDOW(window), "accessories-calculator"); + gtk_window_set_role(GTK_WINDOW(window), "gcalctool"); + gtk_window_set_resizable(GTK_WINDOW(window), FALSE); + g_signal_connect_after(G_OBJECT(window), "key-press-event", G_CALLBACK(key_press_cb), NULL); + g_signal_connect(G_OBJECT(window), "delete-event", G_CALLBACK(delete_cb), NULL); +} |