88c2ec8222
Current behavior is better but it still feels unnatural. This is mostly because the eye balls are in the same x-y plane as the mouse pointer. The attached patch calculates 3D angles of the eye sight as if the eye ball was slightly behind the screen (at the moment the distance is hardcoded to 3x eyeball radius). Smaller z distance makes the eyeballs more independent, larger - increases the (x-y) tracking distance (the eyes remain in their center position longer).
619 lines
16 KiB
C
619 lines
16 KiB
C
/* Copyright (c) Benedikt Meurer <benedikt.meurer@unix-ag.uni-siegen.de>>
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* Copyright (c) Danny Milosavljevic <danny_milo@gmx.net>
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* Copyright (c) Dave Camp
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* Copyright (c) Davyd Madeley <davyd@madeley.id.au>
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* Copyright (c) Nick Schermer <nick@xfce.org>
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* Copyright (c) Harald Judt <h.judt@gmx.at>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_MATH_H
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#include <math.h>
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#endif
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#include <sys/types.h>
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#include <dirent.h>
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#include <string.h>
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#include <stdlib.h>
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#include <libxfce4util/libxfce4util.h>
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#include <libxfce4ui/libxfce4ui.h>
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#include "eyes.h"
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#include "themes.h"
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/* for xml: */
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#define EYES_ROOT "Eyes"
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#define DEFAULTTHEME "Tango"
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#define UPDATE_TIMEOUT 100
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/***************************
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*** Function Prototypes ***
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***************************/
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static void eyes_write_rc_file (XfcePanelPlugin *plugin,
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EyesPlugin *eyes);
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static gboolean eyes_set_size (XfcePanelPlugin *plugin,
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gint size,
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EyesPlugin *eyes);
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/*****************************
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*** Eyes Plugin Functions ***
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*****************************/
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static void
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calculate_pupil_xy (EyesPlugin *eyes_applet,
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gint x,
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gint y,
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gint *pupil_x,
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gint *pupil_y,
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GtkWidget *widget)
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{
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double nx, ny;
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double distance;
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double angle, angle_z;
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double radius_x, radius_y;
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gfloat xalign, yalign;
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gint width, height;
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width = GTK_WIDGET(widget)->allocation.width;
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height = GTK_WIDGET(widget)->allocation.height;
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gtk_misc_get_alignment(GTK_MISC(widget), &xalign, &yalign);
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/* calculate x,y pointer offsets wrt to eye center */
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nx = x - MAX(width - eyes_applet->eye_width, 0) * xalign
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- eyes_applet->eye_width / 2 - GTK_WIDGET(widget)->allocation.x;
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ny = y - MAX(height - eyes_applet->eye_height, 0) * yalign
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- eyes_applet->eye_height / 2 - GTK_WIDGET(widget)->allocation.y;
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/* calculate eye sizes */
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radius_x = (eyes_applet->eye_width -
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eyes_applet->wall_thickness -
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eyes_applet->pupil_width) / 2.0;
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radius_y = (eyes_applet->eye_height -
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eyes_applet->wall_thickness -
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eyes_applet->pupil_height) / 2.0;
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/* by default assume the z-axis distance of 3 radius_x */
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distance = 3 * radius_x;
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/* correction factor for aspect ratio of the eye */
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if (radius_y != 0)
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ny *= radius_x / radius_y;
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/* calculate 3D rotation angles */
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angle_z = atan2 (ny, nx);
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angle = atan2 (hypot (nx, ny), distance);
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/* perform 3D rotation of a vector [0,0,1] (z=1) */
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*pupil_x = radius_x * sin (angle) * cos (angle_z) + eyes_applet->eye_width / 2;
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*pupil_y = radius_y * sin (angle) * sin (angle_z) + eyes_applet->eye_height / 2;
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}
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static void
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draw_eye (EyesPlugin *eyes,
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gint eye_num,
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gint pupil_x,
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gint pupil_y)
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{
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GdkPixbuf *pixbuf;
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GdkRectangle rect, r1, r2;
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pixbuf = gdk_pixbuf_copy (eyes->eye_image);
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r1.x = pupil_x - eyes->pupil_width / 2;
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r1.y = pupil_y - eyes->pupil_height / 2;
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r1.width = eyes->pupil_width;
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r1.height = eyes->pupil_height;
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r2.x = 0;
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r2.y = 0;
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r2.width = eyes->eye_width;
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r2.height = eyes->eye_height;
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gdk_rectangle_intersect (&r1, &r2, &rect);
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gdk_pixbuf_composite (eyes->pupil_image, pixbuf,
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rect.x,
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rect.y,
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rect.width,
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rect.height,
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pupil_x - eyes->pupil_width / 2,
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pupil_y - eyes->pupil_height / 2, 1.0, 1.0,
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GDK_INTERP_BILINEAR,
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255);
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gtk_image_set_from_pixbuf (GTK_IMAGE (eyes->eyes[eye_num]),
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pixbuf);
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g_object_unref (G_OBJECT (pixbuf));
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}
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static gint
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timer_cb(EyesPlugin *eyes)
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{
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gint x, y;
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gint pupil_x, pupil_y;
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gint i;
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for (i = 0; i < eyes->num_eyes; i++)
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{
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if (GTK_WIDGET_REALIZED(eyes->eyes[i]))
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{
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gdk_window_get_pointer(eyes->eyes[i]->window, &x, &y, NULL);
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if ((x != eyes->pointer_last_x[i]) || (y != eyes->pointer_last_y[i]))
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{
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calculate_pupil_xy (eyes, x, y, &pupil_x, &pupil_y, eyes->eyes[i]);
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draw_eye (eyes, i, pupil_x, pupil_y);
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eyes->pointer_last_x[i] = x;
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eyes->pointer_last_y[i] = y;
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}
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}
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}
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return TRUE;
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}
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static void
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properties_load(EyesPlugin *eyes)
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{
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gchar *path;
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if (eyes->active_theme)
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path = g_build_filename(THEMESDIR, eyes->active_theme, NULL);
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else
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path = g_build_filename(THEMESDIR, DEFAULTTHEME, NULL);
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load_theme(eyes, path);
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g_free(path);
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}
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static void
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setup_eyes(EyesPlugin *eyes)
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{
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int i;
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if (eyes->hbox != NULL)
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{
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gtk_widget_destroy(eyes->hbox);
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eyes->hbox = NULL;
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}
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eyes->hbox = gtk_hbox_new(FALSE, 0);
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gtk_container_add(GTK_CONTAINER(eyes->align), GTK_WIDGET(eyes->hbox));
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eyes->eyes = g_new0 (GtkWidget *, eyes->num_eyes);
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eyes->pointer_last_x = g_new0 (gint, eyes->num_eyes);
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eyes->pointer_last_y = g_new0 (gint, eyes->num_eyes);
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for (i = 0; i < eyes->num_eyes; i++)
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{
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eyes->eyes[i] = gtk_image_new ();
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gtk_widget_set_size_request(GTK_WIDGET(eyes->eyes[i]),
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eyes->eye_width,
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eyes->eye_height);
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gtk_widget_show(eyes->eyes[i]);
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gtk_box_pack_start(GTK_BOX(eyes->hbox), eyes->eyes[i],
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FALSE, FALSE, 0);
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if ((eyes->num_eyes != 1) && (i == 0))
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gtk_misc_set_alignment (GTK_MISC (eyes->eyes[i]), 1.0, 0.5);
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else if ((eyes->num_eyes != 1) && (i == eyes->num_eyes - 1))
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gtk_misc_set_alignment (GTK_MISC (eyes->eyes[i]), 0.0, 0.5);
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else
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gtk_misc_set_alignment (GTK_MISC (eyes->eyes[i]), 0.5, 0.5);
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eyes->pointer_last_x[i] = G_MAXINT;
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eyes->pointer_last_y[i] = G_MAXINT;
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draw_eye (eyes, i,
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eyes->eye_width / 2,
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eyes->eye_height / 2);
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}
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gtk_widget_show(eyes->hbox);
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}
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static gboolean
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eyes_applet_fill(EyesPlugin *eyes)
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{
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gtk_widget_show_all(GTK_WIDGET(eyes->align));
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if (eyes->timeout_id == 0)
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{
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eyes->timeout_id = g_timeout_add (UPDATE_TIMEOUT,
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(GtkFunction)timer_cb, eyes);
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}
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return TRUE;
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}
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/*************************
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*** Properties Dialog ***
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*************************/
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static void
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eyes_properties_dialog_response (GtkWidget *dlg,
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gint response,
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EyesPlugin *eyes)
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{
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xfce_panel_plugin_unblock_menu (eyes->plugin);
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eyes_write_rc_file (eyes->plugin, eyes);
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gtk_widget_destroy (dlg);
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}
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static void
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combobox_changed (GtkComboBox *combobox,
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EyesPlugin *eyes)
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{
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gchar *selected = gtk_combo_box_get_active_text (combobox);
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if (eyes->active_theme)
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g_free (eyes->active_theme);
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eyes->active_theme = g_strdup (selected);
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g_free (selected);
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properties_load(eyes);
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setup_eyes(eyes);
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eyes_applet_fill(eyes);
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eyes_set_size(eyes->plugin, xfce_panel_plugin_get_size(eyes->plugin),
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eyes);
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}
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#if LIBXFCE4PANEL_CHECK_VERSION(4,9,0)
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static void
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check_single_row_toggled (GtkWidget *check,
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EyesPlugin *eyes)
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{
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eyes->single_row = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(check));
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eyes_set_size(eyes->plugin, xfce_panel_plugin_get_size(eyes->plugin),
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eyes);
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}
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#endif
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static void
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eyes_properties_dialog (XfcePanelPlugin *plugin,
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EyesPlugin *eyes)
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{
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GtkWidget *dlg, *hbox, *label, *combobox, *check;
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GDir *dir;
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gint i;
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gchar *current;
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const gchar *entry;
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xfce_panel_plugin_block_menu (plugin);
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dlg = xfce_titled_dialog_new_with_buttons (_("Eyes"),
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GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (plugin))),
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GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_NO_SEPARATOR,
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GTK_STOCK_CLOSE, GTK_RESPONSE_OK,
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NULL);
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gtk_window_set_position (GTK_WINDOW (dlg), GTK_WIN_POS_CENTER);
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gtk_window_set_icon_name (GTK_WINDOW (dlg), "xfce4-settings");
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g_signal_connect (dlg, "response", G_CALLBACK (eyes_properties_dialog_response),
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eyes);
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hbox = gtk_hbox_new(FALSE, 6);
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gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), hbox, FALSE, FALSE, 0);
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gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
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label = gtk_label_new_with_mnemonic (_("_Select a theme:"));
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gtk_box_pack_start (GTK_BOX(hbox), label, FALSE, FALSE, 0);
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combobox = gtk_combo_box_new_text ();
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gtk_box_pack_start (GTK_BOX (hbox), combobox, FALSE, TRUE, 0);
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if (eyes->active_theme)
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current = g_strdup (eyes->active_theme);
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else
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current = g_strdup (DEFAULTTHEME);
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if ((dir = g_dir_open(THEMESDIR, 0, NULL)) == NULL)
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{
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gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), current);
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}
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else
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{
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for (i = 0; (entry = g_dir_read_name(dir)) != NULL; i++)
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{
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gtk_combo_box_append_text (GTK_COMBO_BOX (combobox), entry);
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if (strcmp (entry, current) == 0)
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gtk_combo_box_set_active (GTK_COMBO_BOX(combobox), i);
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}
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g_dir_close(dir);
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}
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g_free (current);
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gtk_label_set_mnemonic_widget (GTK_LABEL (label), combobox);
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g_signal_connect(G_OBJECT(combobox), "changed",
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G_CALLBACK(combobox_changed), eyes);
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#if LIBXFCE4PANEL_CHECK_VERSION(4,9,0)
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check = gtk_check_button_new_with_mnemonic
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(_("Use single _row in multi-row panel"));
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gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), eyes->single_row);
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gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), check, FALSE, FALSE, 0);
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g_signal_connect(check, "toggled", G_CALLBACK(check_single_row_toggled), eyes);
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#endif
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gtk_widget_show_all (dlg);
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}
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/******************************
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*** Panel Plugin Functions ***
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******************************/
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static void
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eyes_free_data(XfcePanelPlugin *plugin,
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EyesPlugin *eyes)
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{
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g_return_if_fail(plugin != NULL);
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g_return_if_fail(eyes != NULL);
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if (eyes->timeout_id != 0)
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g_source_remove (eyes->timeout_id);
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g_free (eyes->eyes);
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g_free (eyes->pointer_last_x);
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g_free (eyes->pointer_last_y);
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if (eyes->active_theme != NULL)
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g_free (eyes->active_theme);
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if (eyes->eye_image != NULL)
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g_object_unref (G_OBJECT (eyes->eye_image));
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if (eyes->pupil_image != NULL)
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g_object_unref (G_OBJECT (eyes->pupil_image));
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if (eyes->theme_dir != NULL)
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g_free(eyes->theme_dir);
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if (eyes->theme_name != NULL)
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g_free(eyes->theme_name);
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if (eyes->eye_filename != NULL)
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g_free(eyes->eye_filename);
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if (eyes->pupil_filename != NULL)
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g_free(eyes->pupil_filename);
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gtk_widget_destroy(eyes->align);
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g_free(eyes);
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}
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|
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|
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static gboolean
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eyes_set_size (XfcePanelPlugin *plugin,
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gint size,
|
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EyesPlugin *eyes)
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{
|
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#if LIBXFCE4PANEL_CHECK_VERSION(4,9,0)
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xfce_panel_plugin_set_small (plugin, eyes->single_row);
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gtk_widget_set_size_request (GTK_WIDGET (plugin), -1, -1);
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#else
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if (xfce_panel_plugin_get_orientation (plugin) ==
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GTK_ORIENTATION_HORIZONTAL)
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gtk_widget_set_size_request (GTK_WIDGET (plugin), -1, size);
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else
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gtk_widget_set_size_request (GTK_WIDGET (plugin), size, -1);
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#endif
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|
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return TRUE;
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}
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|
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|
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#if LIBXFCE4PANEL_CHECK_VERSION(4,9,0)
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static gboolean
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eyes_mode_changed (XfcePanelPlugin *plugin,
|
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XfcePanelPluginMode mode,
|
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EyesPlugin *eyes)
|
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{
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if (mode == XFCE_PANEL_PLUGIN_MODE_VERTICAL ||
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mode == XFCE_PANEL_PLUGIN_MODE_DESKBAR)
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gtk_alignment_set (GTK_ALIGNMENT (eyes->align), 0.5, 0.5, 0.0, 1.0);
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else
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gtk_alignment_set (GTK_ALIGNMENT (eyes->align), 0.5, 0.5, 1.0, 0.0);
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eyes_set_size (plugin, xfce_panel_plugin_get_size (plugin), eyes);
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return TRUE;
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}
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|
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#else
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|
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|
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static void
|
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eyes_orientation_changed (XfcePanelPlugin *plugin,
|
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GtkOrientation orientation,
|
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EyesPlugin *eyes)
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{
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if (orientation == GTK_ORIENTATION_VERTICAL)
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gtk_alignment_set (GTK_ALIGNMENT (eyes->align), 0.5, 0.5, 0.0, 1.0);
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else
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gtk_alignment_set (GTK_ALIGNMENT (eyes->align), 0.5, 0.5, 1.0, 0.0);
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eyes_set_size (plugin, xfce_panel_plugin_get_size (plugin), eyes);
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}
|
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#endif
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|
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|
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static void
|
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eyes_read_rc_file (XfcePanelPlugin *plugin,
|
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EyesPlugin *eyes)
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{
|
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XfceRc *rc;
|
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gchar *file;
|
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gchar const *tmp;
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|
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if (eyes->active_theme != NULL)
|
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{
|
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g_free (eyes->active_theme);
|
|
eyes->active_theme = NULL;
|
|
}
|
|
|
|
if ((file = xfce_panel_plugin_lookup_rc_file (plugin)) != NULL)
|
|
{
|
|
rc = xfce_rc_simple_open (file, TRUE);
|
|
g_free (file);
|
|
|
|
if (rc != NULL)
|
|
{
|
|
tmp = xfce_rc_read_entry (rc, "theme", DEFAULTTHEME);
|
|
|
|
if (tmp != NULL)
|
|
eyes->active_theme = g_strdup (tmp);
|
|
|
|
eyes->single_row =
|
|
xfce_rc_read_bool_entry (rc, "single_row", FALSE);
|
|
|
|
xfce_rc_close (rc);
|
|
}
|
|
}
|
|
|
|
if (eyes->active_theme == NULL)
|
|
eyes->active_theme = g_strdup (DEFAULTTHEME);
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
eyes_write_rc_file (XfcePanelPlugin *plugin,
|
|
EyesPlugin *eyes)
|
|
{
|
|
gchar *file;
|
|
XfceRc *rc;
|
|
|
|
if (!(file = xfce_panel_plugin_save_location (plugin, TRUE)))
|
|
return;
|
|
|
|
rc = xfce_rc_simple_open (file, FALSE);
|
|
g_free (file);
|
|
|
|
if (!rc)
|
|
return;
|
|
|
|
if (eyes->active_theme != NULL)
|
|
xfce_rc_write_entry (rc, "theme", eyes->active_theme);
|
|
|
|
xfce_rc_write_bool_entry (rc, "single_row", eyes->single_row);
|
|
|
|
xfce_rc_close (rc);
|
|
}
|
|
|
|
|
|
|
|
static EyesPlugin *
|
|
eyes_plugin_new (XfcePanelPlugin* plugin)
|
|
{
|
|
EyesPlugin *eyes;
|
|
|
|
eyes = g_new0(EyesPlugin, 1);
|
|
|
|
eyes->plugin = plugin;
|
|
|
|
eyes->ebox = gtk_event_box_new ();
|
|
gtk_event_box_set_visible_window (GTK_EVENT_BOX (eyes->ebox), FALSE);
|
|
gtk_widget_show(eyes->ebox);
|
|
|
|
eyes->align = gtk_alignment_new (0.5, 0.5, 1.0, 1.0);
|
|
gtk_container_add(GTK_CONTAINER(eyes->ebox), eyes->align);
|
|
gtk_widget_show(eyes->align);
|
|
|
|
eyes_read_rc_file (plugin, eyes);
|
|
|
|
properties_load(eyes);
|
|
setup_eyes(eyes);
|
|
eyes_applet_fill(eyes);
|
|
|
|
return eyes;
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
eyes_construct (XfcePanelPlugin *plugin)
|
|
{
|
|
EyesPlugin *eyes;
|
|
|
|
xfce_textdomain(GETTEXT_PACKAGE, PACKAGE_LOCALE_DIR, "UTF-8");
|
|
|
|
eyes = eyes_plugin_new (plugin);
|
|
|
|
#if LIBXFCE4PANEL_CHECK_VERSION(4,9,0)
|
|
g_signal_connect (plugin, "mode-changed",
|
|
G_CALLBACK (eyes_mode_changed), eyes);
|
|
#else
|
|
g_signal_connect (plugin, "orientation-changed",
|
|
G_CALLBACK (eyes_orientation_changed), eyes);
|
|
#endif
|
|
|
|
g_signal_connect (plugin, "size-changed",
|
|
G_CALLBACK (eyes_set_size), eyes);
|
|
|
|
g_signal_connect (plugin, "free-data",
|
|
G_CALLBACK (eyes_free_data), eyes);
|
|
|
|
g_signal_connect (plugin, "save",
|
|
G_CALLBACK (eyes_write_rc_file), eyes);
|
|
|
|
xfce_panel_plugin_menu_show_configure (plugin);
|
|
g_signal_connect (plugin, "configure-plugin",
|
|
G_CALLBACK (eyes_properties_dialog), eyes);
|
|
|
|
gtk_container_add (GTK_CONTAINER (plugin), eyes->ebox);
|
|
|
|
xfce_panel_plugin_add_action_widget (plugin, eyes->ebox);
|
|
}
|
|
|
|
XFCE_PANEL_PLUGIN_REGISTER (eyes_construct)
|