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+/** Atoms.cc file for the fluxbox compositor. */
+
+// Copyright (c) 2011 Gediminas Liktaras (gliktaras at gmail dot com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+#include "Atoms.hh"
+
+#include "FbTk/App.hh"
+
+#include <X11/Xatom.h>
+
+#include <sstream>
+
+using namespace FbCompositor;
+
+
+//--- MAIN METHODS -------------------------------------------------------------
+
+// Returns the _NET_ACTIVE_WINDOW atom.
+Atom Atoms::activeWindowAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_NET_ACTIVE_WINDOW", False);
+    return atom;
+}
+
+// Returns the _NET_WM_CM_Sxx atoms.
+Atom Atoms::compositingSelectionAtom(int screen_number) {
+    std::stringstream ss;
+    ss << "_NET_WM_CM_S" << screen_number;
+    return XInternAtom(FbTk::App::instance()->display(), ss.str().c_str(), False);
+}
+
+// Returns the _FLUXBOX_CURRENT_ICONBAR_ITEM atom.
+Atom Atoms::currentIconbarItemAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_FLUXBOX_CURRENT_ICONBAR_ITEM", False);
+    return atom;
+}
+
+// Returns the _NET_WM_WINDOW_OPACITY atom.
+Atom Atoms::opacityAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_OPACITY", False);
+    return atom;
+}
+
+// Returns the _FLUXBOX_RECONFIGURE_RECT atom.
+Atom Atoms::reconfigureRectAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_FLUXBOX_RECONFIGURE_RECT", False);
+    return atom;
+}
+
+// Returns the atoms that (might) correspond to background pixmap (i.e. wallpapers).
+std::vector<Atom> Atoms::rootPixmapAtoms() {
+    static std::vector<Atom> atoms;
+
+    static bool initialized = false;
+    if (!initialized) {
+        atoms.push_back(XInternAtom(FbTk::App::instance()->display(), "_XROOTPMAP_ID", False));
+        atoms.push_back(XInternAtom(FbTk::App::instance()->display(), "_XSETROOT_ID", False));
+        atoms.push_back(XInternAtom(FbTk::App::instance()->display(), "ESETROOT_PMAP_ID", False));
+        initialized = true;
+    }
+
+    return atoms;
+}
+
+// Returns the _NET_WM_WINDOW_TYPE atom.
+Atom Atoms::windowTypeAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE", False);
+    return atom;
+}
+
+// Returns a vector with atoms and the correspoding WindowType enum members.
+std::vector< std::pair<Atom, WindowType> > Atoms::windowTypeAtomList() {
+    static std::vector< std::pair<Atom, WindowType> > atom_list;
+
+    static bool initialized = false;
+    if (!initialized) {
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_DESKTOP", False), WinType_Desktop));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_DIALOG", False), WinType_Dialog));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_DOCK", False), WinType_Dock));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_MENU", False), WinType_Menu));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_NORMAL", False), WinType_Normal));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_SPLASH", False), WinType_Splash));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_TOOLBAR", False), WinType_Toolbar));
+        atom_list.push_back(std::make_pair(XInternAtom(FbTk::App::instance()->display(), "_NET_WM_WINDOW_TYPE_UTILITY", False), WinType_Utility));
+        atom_list.push_back(std::make_pair(None, WinType_Normal));   // Default
+        initialized = true;
+    }
+
+    return atom_list;
+}
+
+// Returns the _WIN_WORKSPACE atom.
+Atom Atoms::workspaceAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_WIN_WORKSPACE", False);
+    return atom;
+}
+
+// Returns the _WIN_WORKSPACE_COUNT atom.
+Atom Atoms::workspaceCountAtom() {
+    static Atom atom = XInternAtom(FbTk::App::instance()->display(), "_WIN_WORKSPACE_COUNT", False);
+    return atom;
+}