[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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| 2 | * |
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| 3 | * Copyright (C) 2008 William Jon McCann <jmccann@redhat.com> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include <stdlib.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include <unistd.h> |
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| 26 | #include <string.h> |
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| 27 | #include <locale.h> |
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| 28 | |
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| 29 | #include <glib/gi18n.h> |
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| 30 | #include <gtk/gtk.h> |
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| 31 | #include <canberra-gtk.h> |
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| 32 | |
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| 33 | #include <X11/Xatom.h> |
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| 34 | #include <gdk/gdkx.h> |
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| 35 | |
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| 36 | #define SELECTION_NAME "_GDM_SCREENSHOT" |
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| 37 | static GtkWidget *selection_window; |
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| 38 | |
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| 39 | static gboolean debug_in; |
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| 40 | |
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| 41 | /* Keep all config options for compatibility even if they are noops */ |
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| 42 | GOptionEntry options [] = { |
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| 43 | { "debug", 'd', 0, G_OPTION_ARG_NONE, &debug_in, N_("Debugging output"), NULL }, |
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| 44 | { NULL } |
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| 45 | }; |
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| 46 | |
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| 47 | /* To make sure there is only one screenshot taken at a time, |
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| 48 | * (Imagine key repeat for the print screen key) we hold a selection |
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| 49 | * until we are done taking the screenshot |
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| 50 | */ |
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| 51 | /* * Copyright (C) 2001-2006 Jonathan Blandford <jrb@alum.mit.edu> */ |
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| 52 | static gboolean |
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| 53 | screenshot_grab_lock (void) |
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| 54 | { |
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| 55 | Atom selection_atom; |
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| 56 | GdkCursor *cursor; |
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| 57 | gboolean result = FALSE; |
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| 58 | |
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| 59 | selection_atom = gdk_x11_get_xatom_by_name (SELECTION_NAME); |
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| 60 | XGrabServer (GDK_DISPLAY ()); |
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| 61 | if (XGetSelectionOwner (GDK_DISPLAY(), selection_atom) != None) { |
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| 62 | goto out; |
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| 63 | } |
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| 64 | |
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| 65 | selection_window = gtk_invisible_new (); |
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| 66 | gtk_widget_show (selection_window); |
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| 67 | |
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| 68 | if (!gtk_selection_owner_set (selection_window, |
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| 69 | gdk_atom_intern (SELECTION_NAME, FALSE), |
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| 70 | GDK_CURRENT_TIME)) { |
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| 71 | gtk_widget_destroy (selection_window); |
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| 72 | selection_window = NULL; |
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| 73 | goto out; |
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| 74 | } |
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| 75 | |
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| 76 | cursor = gdk_cursor_new (GDK_WATCH); |
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| 77 | gdk_pointer_grab (selection_window->window, FALSE, 0, NULL, |
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| 78 | cursor, GDK_CURRENT_TIME); |
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| 79 | gdk_cursor_unref (cursor); |
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| 80 | |
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| 81 | result = TRUE; |
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| 82 | |
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| 83 | out: |
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| 84 | XUngrabServer (GDK_DISPLAY ()); |
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| 85 | gdk_flush (); |
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| 86 | |
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| 87 | return result; |
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| 88 | } |
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| 89 | |
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| 90 | /* * Copyright (C) 2001-2006 Jonathan Blandford <jrb@alum.mit.edu> */ |
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| 91 | static void |
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| 92 | screenshot_release_lock (void) |
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| 93 | { |
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| 94 | if (selection_window != NULL) { |
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| 95 | gtk_widget_destroy (selection_window); |
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| 96 | selection_window = NULL; |
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| 97 | } |
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| 98 | gdk_flush (); |
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| 99 | } |
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| 100 | |
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| 101 | /* * Copyright (C) 2001-2006 Jonathan Blandford <jrb@alum.mit.edu> */ |
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| 102 | static GdkPixbuf * |
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| 103 | screenshot_get_pixbuf (Window w) |
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| 104 | { |
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| 105 | GdkWindow *window; |
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| 106 | GdkWindow *root; |
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| 107 | GdkPixbuf *screenshot; |
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| 108 | int x_real_orig; |
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| 109 | int y_real_orig; |
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| 110 | int x_orig; |
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| 111 | int y_orig; |
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| 112 | int real_width; |
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| 113 | int real_height; |
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| 114 | int width; |
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| 115 | int height; |
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| 116 | |
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| 117 | window = gdk_window_foreign_new (w); |
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| 118 | if (window == NULL) { |
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| 119 | return NULL; |
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| 120 | } |
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| 121 | |
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| 122 | root = gdk_window_foreign_new (GDK_ROOT_WINDOW ()); |
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| 123 | gdk_drawable_get_size (window, &real_width, &real_height); |
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| 124 | gdk_window_get_origin (window, &x_real_orig, &y_real_orig); |
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| 125 | |
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| 126 | x_orig = x_real_orig; |
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| 127 | y_orig = y_real_orig; |
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| 128 | width = real_width; |
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| 129 | height = real_height; |
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| 130 | |
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| 131 | if (x_orig < 0) { |
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| 132 | width = width + x_orig; |
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| 133 | x_orig = 0; |
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| 134 | } |
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| 135 | if (y_orig < 0) { |
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| 136 | height = height + y_orig; |
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| 137 | y_orig = 0; |
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| 138 | } |
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| 139 | |
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| 140 | if (x_orig + width > gdk_screen_width ()) { |
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| 141 | width = gdk_screen_width () - x_orig; |
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| 142 | } |
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| 143 | if (y_orig + height > gdk_screen_height ()) { |
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| 144 | height = gdk_screen_height () - y_orig; |
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| 145 | } |
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| 146 | |
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| 147 | screenshot = gdk_pixbuf_get_from_drawable (NULL, |
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| 148 | root, |
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| 149 | NULL, |
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| 150 | x_orig, |
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| 151 | y_orig, |
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| 152 | 0, |
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| 153 | 0, |
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| 154 | width, |
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| 155 | height); |
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| 156 | |
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| 157 | return screenshot; |
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| 158 | } |
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| 159 | |
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| 160 | static char * |
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| 161 | screenshot_save (GdkPixbuf *pixbuf) |
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| 162 | { |
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| 163 | char *filename; |
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| 164 | gboolean res; |
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| 165 | GError *error; |
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| 166 | const char *save_dir; |
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| 167 | |
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| 168 | save_dir = LOCALSTATEDIR "/run/gdm"; |
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| 169 | |
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| 170 | filename = g_build_filename (save_dir, |
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| 171 | "GDM-Screenshot.png", |
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| 172 | NULL); |
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| 173 | |
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| 174 | error = NULL; |
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| 175 | res = gdk_pixbuf_save (pixbuf, |
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| 176 | filename, |
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| 177 | "png", |
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| 178 | &error, |
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| 179 | "tEXt::CREATOR", "gdm-screenshot", |
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| 180 | NULL); |
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| 181 | if (! res) { |
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| 182 | g_warning ("Unable to save screenshot: %s", error->message); |
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| 183 | g_error_free (error); |
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| 184 | g_free (filename); |
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| 185 | filename = NULL; |
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| 186 | } |
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| 187 | |
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| 188 | return filename; |
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| 189 | } |
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| 190 | |
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| 191 | static void |
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| 192 | sound_effect_finished (ca_context *c, |
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| 193 | uint32_t id, |
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| 194 | int error_code, |
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| 195 | void *userdata) |
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| 196 | { |
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| 197 | } |
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| 198 | |
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| 199 | static void |
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| 200 | play_sound_effect (Window xid) |
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| 201 | { |
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| 202 | ca_context *c; |
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| 203 | ca_proplist *p; |
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| 204 | int res; |
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| 205 | |
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| 206 | c = ca_gtk_context_get (); |
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| 207 | |
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| 208 | p = NULL; |
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| 209 | res = ca_proplist_create (&p); |
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| 210 | if (res < 0) { |
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| 211 | goto done; |
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| 212 | } |
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| 213 | |
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| 214 | res = ca_proplist_sets (p, CA_PROP_EVENT_ID, "screen-capture"); |
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| 215 | if (res < 0) { |
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| 216 | goto done; |
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| 217 | } |
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| 218 | |
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| 219 | res = ca_proplist_sets (p, CA_PROP_EVENT_DESCRIPTION, _("Screenshot taken")); |
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| 220 | if (res < 0) { |
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| 221 | goto done; |
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| 222 | } |
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| 223 | |
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| 224 | res = ca_proplist_setf (p, |
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| 225 | CA_PROP_WINDOW_X11_XID, |
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| 226 | "%lu", |
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| 227 | (unsigned long) xid); |
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| 228 | if (res < 0) { |
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| 229 | goto done; |
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| 230 | } |
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| 231 | |
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| 232 | ca_context_play_full (c, 0, p, sound_effect_finished, NULL); |
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| 233 | |
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| 234 | done: |
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| 235 | if (p != NULL) { |
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| 236 | ca_proplist_destroy (p); |
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| 237 | } |
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| 238 | |
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| 239 | } |
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| 240 | |
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| 241 | static void |
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| 242 | prepare_screenshot (void) |
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| 243 | { |
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| 244 | Window win; |
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| 245 | GdkPixbuf *screenshot; |
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| 246 | char *filename; |
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| 247 | |
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| 248 | if (!screenshot_grab_lock ()) { |
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| 249 | exit (0); |
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| 250 | } |
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| 251 | |
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| 252 | win = GDK_ROOT_WINDOW (); |
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| 253 | |
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| 254 | screenshot = screenshot_get_pixbuf (win); |
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| 255 | |
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| 256 | screenshot_release_lock (); |
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| 257 | |
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| 258 | if (screenshot == NULL) { |
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| 259 | /* FIXME: dialog? */ |
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| 260 | exit (1); |
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| 261 | } |
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| 262 | |
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| 263 | play_sound_effect (win); |
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| 264 | |
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| 265 | filename = screenshot_save (screenshot); |
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| 266 | if (filename != NULL) { |
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| 267 | g_print ("Wrote %s\n", filename); |
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| 268 | /* FIXME: show a dialog or something */ |
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| 269 | g_free (filename); |
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| 270 | } |
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| 271 | } |
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| 272 | |
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| 273 | int |
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| 274 | main (int argc, char *argv[]) |
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| 275 | { |
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| 276 | GOptionContext *ctx; |
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| 277 | |
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| 278 | bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR); |
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| 279 | bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); |
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| 280 | textdomain (GETTEXT_PACKAGE); |
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| 281 | setlocale (LC_ALL, ""); |
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| 282 | |
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| 283 | /* Option parsing */ |
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| 284 | ctx = g_option_context_new (_("Take a picture of the screen")); |
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| 285 | g_option_context_set_translation_domain (ctx, GETTEXT_PACKAGE); |
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| 286 | g_option_context_add_main_entries (ctx, options, NULL); |
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| 287 | g_option_context_parse (ctx, &argc, &argv, NULL); |
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| 288 | g_option_context_free (ctx); |
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| 289 | |
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| 290 | gtk_init (&argc, &argv); |
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| 291 | |
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| 292 | prepare_screenshot (); |
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| 293 | |
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| 294 | return 1; |
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| 295 | } |
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