/* -*- Mode: C; c-basic-offset: 4 -*- * geyes.c - A cheap xeyes ripoff. * Copyright (C) 1999 Dave Camp * * 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 of the License, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include "geyes.h" #define UPDATE_TIMEOUT 100 static gfloat gtk_align_to_gfloat (GtkAlign align) { switch (align) { case GTK_ALIGN_START: return 0.0f; case GTK_ALIGN_END: return 1.0f; case GTK_ALIGN_CENTER: case GTK_ALIGN_FILL: return 0.5f; default: return 0.0f; } } /* TODO - Optimize this a bit */ static void calculate_pupil_xy (EyesApplet *eyes_applet, gint x, gint y, gint *pupil_x, gint *pupil_y, GtkWidget *widget) { GtkAllocation allocation; float sina; float cosa; float h; float temp; float nx, ny; float xalign, yalign; float eye_width_half, eye_height_half; gtk_widget_get_allocation (GTK_WIDGET (widget), &allocation); xalign = gtk_align_to_gfloat (gtk_widget_get_halign (widget)); yalign = gtk_align_to_gfloat (gtk_widget_get_valign (widget)); eye_width_half = (float) eyes_applet->eye_width * 0.5f; eye_height_half = (float) eyes_applet->eye_height * 0.5f; nx = (float) x - (float) MAX (allocation.width - eyes_applet->eye_width, 0) * xalign - eye_width_half; ny = (float) y - (float) MAX (allocation.height - eyes_applet->eye_height, 0) * yalign - eye_height_half; h = hypotf (nx, ny); if ((h < 0.5f) || (fabs (h) < (fabs (hypotf (eye_height_half, eye_width_half) - (float) eyes_applet->wall_thickness - (float) eyes_applet->pupil_height)))) { *pupil_x = (gint)(nx + eye_width_half); *pupil_y = (gint)(ny + eye_height_half); return; } sina = nx / h; cosa = ny / h; temp = hypotf ((float) eyes_applet->eye_width * sina, (float) eyes_applet->eye_height * cosa); temp -= hypotf ((float) eyes_applet->pupil_width * sina, (float) eyes_applet->pupil_height * cosa); temp -= (float) eyes_applet->wall_thickness * hypotf (sina, cosa); temp *= 0.5f; *pupil_x = (gint)(temp * sina + eye_width_half); *pupil_y = (gint)(temp * cosa + eye_height_half); } static void draw_eye (EyesApplet *eyes_applet, gsize eye_num, gint pupil_x, gint pupil_y) { GdkPixbuf *pixbuf; GdkRectangle rect, r1, r2; pixbuf = gdk_pixbuf_copy (eyes_applet->eye_image); r1.x = pupil_x - eyes_applet->pupil_width / 2; r1.y = pupil_y - eyes_applet->pupil_height / 2; r1.width = eyes_applet->pupil_width; r1.height = eyes_applet->pupil_height; r2.x = 0; r2.y = 0; r2.width = eyes_applet->eye_width; r2.height = eyes_applet->eye_height; gdk_rectangle_intersect (&r1, &r2, &rect); gdk_pixbuf_composite (eyes_applet->pupil_image, pixbuf, rect.x, rect.y, rect.width, rect.height, pupil_x - eyes_applet->pupil_width / 2, pupil_y - eyes_applet->pupil_height / 2, 1.0, 1.0, GDK_INTERP_BILINEAR, 255); gtk_image_set_from_pixbuf (GTK_IMAGE (eyes_applet->eyes[eye_num]), pixbuf); g_object_unref (pixbuf); } static gint timer_cb (EyesApplet *eyes_applet) { GdkDisplay *display; GdkSeat *seat; gint x, y; gint pupil_x, pupil_y; gsize i; display = gtk_widget_get_display (GTK_WIDGET (eyes_applet->applet)); seat = gdk_display_get_default_seat (display); for (i = 0; i < eyes_applet->num_eyes; i++) { if (gtk_widget_get_realized (eyes_applet->eyes[i])) { gdk_window_get_device_position (gtk_widget_get_window (eyes_applet->eyes[i]), gdk_seat_get_pointer (seat), &x, &y, NULL); if ((x != eyes_applet->pointer_last_x[i]) || (y != eyes_applet->pointer_last_y[i])) { calculate_pupil_xy (eyes_applet, x, y, &pupil_x, &pupil_y, eyes_applet->eyes[i]); draw_eye (eyes_applet, i, pupil_x, pupil_y); eyes_applet->pointer_last_x[i] = x; eyes_applet->pointer_last_y[i] = y; } } } return TRUE; } static void about_cb (GtkAction *action, EyesApplet *eyes_applet) { static const gchar *authors[] = { "Dave Camp ", NULL }; const gchar *documenters[] = { "Arjan Scherpenisse ", "Telsa Gwynne ", N_("Sun GNOME Documentation Team "), N_("MATE Documentation Team"), NULL }; #ifdef ENABLE_NLS const char **p; for (p = documenters; *p; ++p) *p = _(*p); #endif gtk_show_about_dialog (NULL, "title", _("About Eyes"), "version", VERSION, "comments", _("A goofy set of eyes for the MATE " "panel. They follow your mouse."), "copyright", _("Copyright \xC2\xA9 1999 Dave Camp\n" "Copyright \xc2\xa9 2012-2021 MATE developers"), "authors", authors, "documenters", documenters, "translator-credits", _("translator-credits"), "logo-icon-name", "mate-eyes-applet", NULL); } static gboolean properties_load (EyesApplet *eyes_applet) { gchar *theme_path = NULL; gboolean result; theme_path = g_settings_get_string (eyes_applet->settings, GEYES_SETTINGS_THEME_PATH_KEY); if (theme_path == NULL) theme_path = g_strdup (GEYES_THEMES_DIR "Default-tiny"); result = load_theme (eyes_applet, theme_path); g_free (theme_path); return result; } void setup_eyes (EyesApplet *eyes_applet) { gsize i; eyes_applet->hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); gtk_box_pack_start (GTK_BOX (eyes_applet->vbox), eyes_applet->hbox, TRUE, TRUE, 0); eyes_applet->eyes = g_new0 (GtkWidget *, eyes_applet->num_eyes); eyes_applet->pointer_last_x = g_new0 (gint, eyes_applet->num_eyes); eyes_applet->pointer_last_y = g_new0 (gint, eyes_applet->num_eyes); for (i = 0; i < eyes_applet->num_eyes; i++) { if ((eyes_applet->eyes[i] = gtk_image_new ()) == NULL) g_error ("Error creating geyes\n"); gtk_widget_set_size_request (GTK_WIDGET (eyes_applet->eyes[i]), eyes_applet->eye_width, eyes_applet->eye_height); gtk_widget_show (eyes_applet->eyes[i]); gtk_box_pack_start (GTK_BOX (eyes_applet->hbox), eyes_applet->eyes[i], TRUE, TRUE, 0); if ((eyes_applet->num_eyes != 1) && (i == 0)) { gtk_widget_set_halign (eyes_applet->eyes[i], GTK_ALIGN_END); gtk_widget_set_valign (eyes_applet->eyes[i], GTK_ALIGN_CENTER); } else if ((eyes_applet->num_eyes != 1) && (i == eyes_applet->num_eyes - 1)) { gtk_widget_set_halign (eyes_applet->eyes[i], GTK_ALIGN_START); gtk_widget_set_valign (eyes_applet->eyes[i], GTK_ALIGN_CENTER); } else { gtk_widget_set_halign (eyes_applet->eyes[i], GTK_ALIGN_CENTER); gtk_widget_set_valign (eyes_applet->eyes[i], GTK_ALIGN_CENTER); } gtk_widget_realize (eyes_applet->eyes[i]); eyes_applet->pointer_last_x[i] = G_MAXINT; eyes_applet->pointer_last_y[i] = G_MAXINT; draw_eye (eyes_applet, i, eyes_applet->eye_width / 2, eyes_applet->eye_height / 2); } gtk_widget_show (eyes_applet->hbox); } void destroy_eyes (EyesApplet *eyes_applet) { gtk_widget_destroy (eyes_applet->hbox); eyes_applet->hbox = NULL; g_free (eyes_applet->eyes); g_free (eyes_applet->pointer_last_x); g_free (eyes_applet->pointer_last_y); } static EyesApplet* create_eyes (MatePanelApplet *applet) { EyesApplet *eyes_applet = g_new0 (EyesApplet, 1); eyes_applet->applet = applet; eyes_applet->vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); eyes_applet->settings = mate_panel_applet_settings_new (applet, GEYES_SETTINGS_SCHEMA); gtk_container_add (GTK_CONTAINER (applet), eyes_applet->vbox); return eyes_applet; } static void destroy_cb (GObject *object, EyesApplet *eyes_applet) { g_return_if_fail (eyes_applet); g_source_remove (eyes_applet->timeout_id); if (eyes_applet->hbox) destroy_eyes (eyes_applet); eyes_applet->timeout_id = 0; if (eyes_applet->eye_image) g_object_unref (eyes_applet->eye_image); eyes_applet->eye_image = NULL; if (eyes_applet->pupil_image) g_object_unref (eyes_applet->pupil_image); eyes_applet->pupil_image = NULL; g_free (eyes_applet->theme_dir); eyes_applet->theme_dir = NULL; g_free (eyes_applet->theme_name); eyes_applet->theme_name = NULL; g_free (eyes_applet->eye_filename); eyes_applet->eye_filename = NULL; g_free (eyes_applet->pupil_filename); eyes_applet->pupil_filename = NULL; if (eyes_applet->prop_box.pbox) gtk_widget_destroy (eyes_applet->prop_box.pbox); if (eyes_applet->settings) g_object_unref (eyes_applet->settings); eyes_applet->settings = NULL; g_free (eyes_applet); } static void help_cb (GtkAction *action, EyesApplet *eyes_applet) { GError *error = NULL; gtk_show_uri_on_window (NULL, "help:mate-geyes", gtk_get_current_event_time (), &error); if (error) { GtkWidget *dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, _("There was an error displaying help: %s"), error->message); g_signal_connect (G_OBJECT (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL); gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE); gtk_window_set_screen (GTK_WINDOW (dialog), gtk_widget_get_screen (GTK_WIDGET (eyes_applet->applet))); gtk_widget_show (dialog); g_clear_error (&error); } } static const GtkActionEntry geyes_applet_menu_actions[] = { { "Props", "document-properties", N_("_Preferences"), NULL, NULL, G_CALLBACK (properties_cb) }, { "Help", "help-browser", N_("_Help"), NULL, NULL, G_CALLBACK (help_cb) }, { "About", "help-about", N_("_About"), NULL, NULL, G_CALLBACK (about_cb) } }; static void set_atk_name_description (GtkWidget *widget, const gchar *name, const gchar *description) { AtkObject *aobj; aobj = gtk_widget_get_accessible (widget); /* Check if gail is loaded */ if (GTK_IS_ACCESSIBLE (aobj) == FALSE) return; atk_object_set_name (aobj, name); atk_object_set_description (aobj, description); } static gboolean geyes_applet_fill (MatePanelApplet *applet) { EyesApplet *eyes_applet; GtkActionGroup *action_group; gboolean result; g_set_application_name (_("Eyes")); gtk_window_set_default_icon_name ("mate-eyes-applet"); mate_panel_applet_set_flags (applet, MATE_PANEL_APPLET_EXPAND_MINOR); eyes_applet = create_eyes (applet); eyes_applet->timeout_id = g_timeout_add (UPDATE_TIMEOUT, (GSourceFunc) timer_cb, eyes_applet); action_group = gtk_action_group_new ("Geyes Applet Actions"); gtk_action_group_set_translation_domain (action_group, GETTEXT_PACKAGE); gtk_action_group_add_actions (action_group, geyes_applet_menu_actions, G_N_ELEMENTS (geyes_applet_menu_actions), eyes_applet); mate_panel_applet_setup_menu_from_resource (eyes_applet->applet, GEYES_RESOURCE_PATH "geyes-applet-menu.xml", action_group); if (mate_panel_applet_get_locked_down (eyes_applet->applet)) { GtkAction *action; action = gtk_action_group_get_action (action_group, "Props"); gtk_action_set_visible (action, FALSE); } g_object_unref (action_group); gtk_widget_set_tooltip_text (GTK_WIDGET (eyes_applet->applet), _("Eyes")); set_atk_name_description (GTK_WIDGET (eyes_applet->applet), _("Eyes"), _("The eyes look in the direction of the mouse pointer")); g_signal_connect (eyes_applet->vbox, "destroy", G_CALLBACK (destroy_cb), eyes_applet); gtk_widget_show_all (GTK_WIDGET (eyes_applet->applet)); /* setup here and not in create eyes so the destroy signal is set so * that when there is an error within loading the theme * we can emit this signal */ if ((result = properties_load (eyes_applet)) == TRUE) setup_eyes (eyes_applet); return result; } static gboolean geyes_applet_factory (MatePanelApplet *applet, const gchar *iid, gpointer data) { gboolean retval = FALSE; theme_dirs_create (); if (!strcmp (iid, "GeyesApplet")) retval = geyes_applet_fill (applet); if (retval == FALSE) { exit (-1); } return retval; } MATE_PANEL_APPLET_OUT_PROCESS_FACTORY ("GeyesAppletFactory", PANEL_TYPE_APPLET, "geyes", geyes_applet_factory, NULL)