diff options
Diffstat (limited to 'geyes/src/geyes.c')
| -rw-r--r-- | geyes/src/geyes.c | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/geyes/src/geyes.c b/geyes/src/geyes.c new file mode 100644 index 00000000..4adf7e87 --- /dev/null +++ b/geyes/src/geyes.c @@ -0,0 +1,465 @@ +/* -*- 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 <config.h> +#include <math.h> +#include <stdlib.h> +#include <mate-panel-applet.h> +#include <mate-panel-applet-gsettings.h> +#include "geyes.h" + +#define UPDATE_TIMEOUT 100 + +static gfloat +gtk_align_to_gfloat (GtkAlign align) +{ + switch (align) { + case GTK_ALIGN_START: + return 0.0; + case GTK_ALIGN_END: + return 1.0; + case GTK_ALIGN_CENTER: + case GTK_ALIGN_FILL: + return 0.5; + default: + return 0.0; + } +} + +/* 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; + double sina; + double cosa; + double h; + double temp; + double nx, ny; + + gfloat xalign, yalign; + gint width, height; + + gtk_widget_get_allocation (GTK_WIDGET(widget), &allocation); + width = allocation.width; + height = allocation.height; + xalign = gtk_align_to_gfloat (gtk_widget_get_halign (widget)); + yalign = gtk_align_to_gfloat (gtk_widget_get_valign (widget)); + + nx = x - MAX(width - eyes_applet->eye_width, 0) * xalign - eyes_applet->eye_width / 2; + ny = y - MAX(height- eyes_applet->eye_height, 0) * yalign - eyes_applet->eye_height / 2; + + h = hypot (nx, ny); + if (h < 0.5 || fabs (h) + < (fabs (hypot (eyes_applet->eye_height / 2, eyes_applet->eye_width / 2)) - eyes_applet->wall_thickness - eyes_applet->pupil_height)) { + *pupil_x = nx + eyes_applet->eye_width / 2; + *pupil_y = ny + eyes_applet->eye_height / 2; + return; + } + + sina = nx / h; + cosa = ny / h; + + temp = hypot ((eyes_applet->eye_width / 2) * sina, (eyes_applet->eye_height / 2) * cosa); + temp -= hypot ((eyes_applet->pupil_width / 2) * sina, (eyes_applet->pupil_height / 2) * cosa); + temp -= hypot ((eyes_applet->wall_thickness / 2) * sina, (eyes_applet->wall_thickness / 2) * cosa); + + *pupil_x = temp * sina + (eyes_applet->eye_width / 2); + *pupil_y = temp * cosa + (eyes_applet->eye_height / 2); +} + +static void +draw_eye (EyesApplet *eyes_applet, + gint 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; + gint 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 <[email protected]>", + NULL + }; + + const gchar *documenters[] = { + "Arjan Scherpenisse <[email protected]>", + "Telsa Gwynne <[email protected]>", + N_("Sun GNOME Documentation Team <[email protected]>"), + 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 2012-2020 MATE developers"), + "authors", authors, + "documenters", documenters, + "translator-credits", _("translator-credits"), + "logo-icon-name", "mate-eyes-applet", + NULL); +} + +static int +properties_load (EyesApplet *eyes_applet) +{ + gchar *theme_path = NULL; + + theme_path = g_settings_get_string (eyes_applet->settings, "theme-path"); + + if (theme_path == NULL) + theme_path = g_strdup (GEYES_THEMES_DIR "Default-tiny"); + + if (load_theme (eyes_applet, theme_path) == FALSE) { + g_free (theme_path); + + return FALSE; + } + + g_free (theme_path); + + return TRUE; +} + +void +setup_eyes (EyesApplet *eyes_applet) +{ + int 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++) { + eyes_applet->eyes[i] = gtk_image_new (); + if (eyes_applet->eyes[i] == 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, "org.mate.panel.applet.geyes"); + + gtk_container_add (GTK_CONTAINER (applet), eyes_applet->vbox); + + return eyes_applet; +} + +static void +dispose_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; + if (eyes_applet->theme_dir) + g_free (eyes_applet->theme_dir); + eyes_applet->theme_dir = NULL; + if (eyes_applet->theme_name) + g_free (eyes_applet->theme_name); + eyes_applet->theme_name = NULL; + if (eyes_applet->eye_filename) + g_free (eyes_applet->eye_filename); + eyes_applet->eye_filename = NULL; + if (eyes_applet->pupil_filename) + 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_error_free (error); + error = NULL; + } +} + + +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; + + 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); + mate_panel_applet_set_background_widget (applet, GTK_WIDGET (applet)); + + 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, + "dispose", + G_CALLBACK (dispose_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 (properties_load (eyes_applet) == FALSE) + return FALSE; + + setup_eyes (eyes_applet); + + return TRUE; +} + +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) |