[WIP] preliminary i3 support

Author: dannyedel

cmake/filelists.cmake

@@ -30,6 +30,7 @@ list(APPEND libdspdfviewer_SRCS
 	desktopsupportfactory.cpp
 	desktopsupportexceptions.cpp
 	desktopsupport/generic.cpp
+	desktopsupport/i3.cpp
 )
 
 if(UseQtFive)

desktopsupport/i3.cpp

@@ -0,0 +1,87 @@
+#include "i3.h"
+#include "../debug.h"
+#include <boost/throw_exception.hpp>
+#include <stdio.h>
+#include <sstream>
+#include <iostream>
+#include <thread>
+#include <chrono>
+#include <QApplication>
+
+namespace {
+	typedef std::unique_ptr<
+		FILE,
+		decltype(&pclose)
+	> FILEptr;
+}
+
+using namespace std;
+
+DesktopEnvironmentHandlerQuality i3DesktopSupport::quality() const {
+	/** Check return code of i3 --get-socketpath
+	 * to check verify whether we are on i3
+	 */
+	DEBUGOUT << "Checking if we are on i3...";
+	if ( ! getSocketpath().empty() ) {
+		return DesktopEnvironmentHandlerQuality::
+			DesktopEnvironmentSpecificHandler;
+	} else {
+		return DesktopEnvironmentHandlerQuality::
+			NotMyEnvironment;
+	}
+}
+
+i3OutputHandle::i3OutputHandle(const string& name, bool prim):
+	xrandrName(name), primary(prim)
+{
+}
+
+const std::string i3OutputHandle::name() const {
+	return xrandrName;
+}
+
+OutputList i3DesktopSupport::getOutputs() const {
+	/** FIXME: Dummy code */
+	OutputList list;
+	list.emplace_back( new i3OutputHandle("DVI-I-1", true) );
+	list.emplace_back( new i3OutputHandle("VGA-0", false) );
+	return list;
+}
+
+void i3DesktopSupport::moveWindow(QWidget& w, OutputHandle& hnd) const {
+	i3OutputHandle& h = dynamic_cast<i3OutputHandle&>( hnd );
+	ostringstream command;
+	command << "i3-msg " 
+		<< "[id=" << w.winId() << "] "
+		<< "fullscreen disable, "
+		<< "move to output " << h.xrandrName;
+	cerr << "Trying to run " << command.str() << endl;
+	system( command.str().c_str() );
+	QApplication::processEvents();
+}
+
+void i3DesktopSupport::makeFullscreen(QWidget& w) const {
+	ostringstream command;
+	command << "i3-msg "
+		<< "[id=" << w.winId() << "] "
+		<< "fullscreen enable";
+	cerr << "Trying to run " << command.str() << endl;
+	system( command.str().c_str() );
+	QApplication::processEvents();
+}
+
+
+const string i3DesktopSupport::getSocketpath() {
+	/** Cache for the socket path */
+	static string spath;
+	if ( ! spath.empty() ) {
+		return spath;
+	}
+	/** Socketpath not cached */
+
+	/** FIXME: Port this to boost or similar */
+	FILEptr fd( popen("i3 --get-socketpath", "r"), pclose );
+
+
+	return "/run/user/1000/i3/ipc-socket.1468";
+}

desktopsupport/i3.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "../desktopsupport.h"
+
+struct i3OutputHandle: public OutputHandle {
+	const std::string xrandrName;
+	const std::string name() const override;
+	const bool primary;
+	bool isPrimary() const { return primary; }
+
+	i3OutputHandle(const std::string&, bool);
+};
+
+class i3DesktopSupport: public DesktopSupport {
+	DesktopEnvironmentHandlerQuality quality() const override;
+	std::string const name() const override {
+		return "i3 desktop support via i3 IPC";
+	}
+	OutputList getOutputs() const override;
+	void moveWindow(QWidget&, OutputHandle&) const override;
+	void makeFullscreen(QWidget&) const override;
+private:
+	static const std::string getSocketpath();
+};

desktopsupportfactory.cpp

@@ -3,6 +3,8 @@
 
 #include "desktopsupport/generic.h"
 #include "desktopsupport/win32.h"
+#include "desktopsupport/i3.h"
+
 #include <algorithm>
 #include <stdexcept>
 
@@ -36,6 +38,8 @@ DesktopSupportPtr DesktopSupportFactory::getDesktopSupport() {
 	allImpls.emplace_back( new Win32DesktopSupport() );
 #endif
 
+	allImpls.emplace_back( new i3DesktopSupport() );
+
 	auto maxElemIt = max_element(
 		allImpls.begin(),
 		allImpls.end(),