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bf937d9cdb
* Fixed a bug in 'RDApplication' that could cause false detection of similarly-named windows when enforcing single instances. Signed-off-by: Fred Gleason <fredg@paravelsystems.com>
136 lines
3.2 KiB
C++
136 lines
3.2 KiB
C++
// rdapplication.cpp
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//
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// Base GUI Application Class
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//
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// (C) Copyright 2021-2022 Fred Gleason <fredg@paravelsystems.com>
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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 version 2 as
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// published by the Free Software Foundation.
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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
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// GNU 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
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#include <QProcess>
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#include "rdapplication.h"
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RDApplication *rda=NULL;
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RDApplication::RDApplication(const QString &module_name,const QString &cmdname,
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const QString &usage,QObject *parent)
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: RDCoreApplication(module_name,cmdname,usage,parent)
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{
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app_icon_engine=new RDIconEngine();
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}
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RDApplication::~RDApplication()
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{
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delete app_icon_engine;
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}
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bool RDApplication::makeSingleInstance(QString *err_msg)
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{
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//
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// If we're already running, then just raise the window.
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//
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QStringList args;
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args.clear();
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args.push_back("-l");
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QProcess *proc=new QProcess(this);
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proc->start("wmctrl",args);
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proc->waitForFinished();
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if(proc->exitStatus()!=QProcess::NormalExit) {
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*err_msg=tr("wmctrl(1) process crashed");
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delete proc;
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return false;
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}
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if(proc->exitCode()!=0) {
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QString errs=QString::fromUtf8(proc->readAllStandardError());
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if(errs.isEmpty()) {
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*err_msg=tr("wmctrl(1) not found\n");
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}
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else {
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*err_msg=QString::asprintf("wmctrl(1) process returned error [%s]",
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errs.toUtf8().constData());
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}
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delete proc;
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return false;
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}
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bool found=false;
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QStringList f0=QString::fromUtf8(proc->readAllStandardOutput()).
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split("\n",QString::SkipEmptyParts);
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for(int i=0;i<f0.size();i++) {
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QStringList f1=f0.at(i).split(" ",QString::SkipEmptyParts);
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if(f1.size()>=6) {
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if((f1.at(3).trimmed().toLower()==commandName())&&
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(f1.at(4)==(QString("v")+VERSION))&&
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(f1.at(5)=="-")) {
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Raise(f1.at(0));
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found=true;
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}
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}
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}
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delete proc;
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if(found) {
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exit(0);
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}
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return true;
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}
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RDIconEngine *RDApplication::iconEngine() const
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{
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return app_icon_engine;
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}
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QString RDApplication::locale()
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{
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QString ret;
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if(getenv("LANG")!=NULL) {
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ret=getenv("LANG");
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}
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return ret;
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}
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void RDApplication::Raise(const QString win_id)
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{
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QStringList args;
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QProcess *proc=NULL;
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args.push_back("-i");
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args.push_back("-R");
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args.push_back(win_id);
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proc=new QProcess(this);
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proc->start("wmctrl",args);
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proc->waitForFinished();
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if(proc->exitStatus()!=QProcess::NormalExit) {
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perror("wmctrl(1) process crashed");
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exit(1);
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}
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if(proc->exitCode()!=0) {
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QString errs=QString::fromUtf8(proc->readAllStandardError());
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if(errs.isEmpty()) {
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fprintf(stderr,"rdsinglestart: wmctrl(1) not found\n");
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}
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else {
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fprintf(stderr,"rdsinglestart: wmctrl(1) process returned error [%s]\n",
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errs.toUtf8().constData());
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}
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exit(1);
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}
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delete proc;
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}
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