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/** ServerAutoApp.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.
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H
#include "ServerAutoApp.hh"
#include "Atoms.hh"
#include "CompositorConfig.hh"
#include "Constants.hh"
#include <X11/extensions/Xcomposite.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <sstream>
#ifdef HAVE_CTIME
#include <ctime>
#else
#ifdef HAVE_TIME_H
#include <time.h>
#endif // HAVE_TIME_H
#endif // HAVE_CTIME
#include <csignal>
using namespace FbCompositor;
//--- CONSTANTS ----------------------------------------------------------------
// How many microseconds to sleep before restarting the event loop.
const int SLEEP_TIME = 10000;
//--- CONSTRUCTORS AND DESTRUCTORS ---------------------------------------------
// Constructor.
ServerAutoApp::ServerAutoApp(const CompositorConfig &config) :
App(config.displayName().c_str()) {
if (config.renderingMode() != RM_ServerAuto) {
throw InitException("ServerAutoApp provides only the \"serverauto\" renderer.");
}
initComposite();
initScreens();
XFlush(display());
signal(SIGINT, handleSignal_ServerAuto);
signal(SIGTERM, handleSignal_ServerAuto);
}
// Destructor.
ServerAutoApp::~ServerAutoApp() { }
//--- INITIALIZATION FUNCTIONS -------------------------------------------------
// Initialize Composite extension.
void ServerAutoApp::initComposite() {
int event_base;
int error_base;
int major_ver;
int minor_ver;
if (!XCompositeQueryExtension(display(), &event_base, &error_base)) {
throw InitException("Composite extension not found.");
}
if (!XCompositeQueryVersion(display(), &major_ver, &minor_ver)) {
throw InitException("Could not query the version of the Composite extension.");
}
if ((major_ver < 0) || ((major_ver == 0) && (minor_ver < 1))) {
std::stringstream ss;
ss << "Unsupported Composite extension version found (required >=0.1, got "
<< major_ver << "." << minor_ver << ").";
throw InitException(ss.str());
}
}
// Prepare screens.
void ServerAutoApp::initScreens() {
int screen_count = XScreenCount(display());
for (int i = 0; i < screen_count; i++) {
XCompositeRedirectSubwindows(display(), XRootWindow(display(), i), CompositeRedirectAutomatic);
Atom cm_atom = Atoms::compositingSelectionAtom(i);
Window cur_owner = XGetSelectionOwner(display(), cm_atom);
if (cur_owner != None) {
// TODO: More detailed message - what is the other program?
throw InitException("Another compositing manager is running.");
}
cur_owner = XCreateSimpleWindow(display(), XRootWindow(display(), i), -10, -10, 1, 1, 0, None, None);
XmbSetWMProperties(display(), cur_owner, APP_NAME, APP_NAME, NULL, 0, NULL, NULL, NULL);
XSetSelectionOwner(display(), cm_atom, cur_owner, CurrentTime);
}
}
//--- EVENT LOOP ---------------------------------------------------------------
// Enters the event loop.
void ServerAutoApp::eventLoop() {
timespec sleep_timespec = { 0, SLEEP_TIME * 1000 };
while (!done()) {
nanosleep(&sleep_timespec, NULL);
}
}
//--- VARIOUS HANDLERS ---------------------------------------------------------
// Custom signal handler for ServerAuto mode.
void FbCompositor::handleSignal_ServerAuto(int sig) {
if ((sig == SIGINT) || (sig == SIGTERM)) {
FbTk::App::instance()->end();
}
}
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