Add a new utility to the lumina source tree: lumina-xconfig

This utility is a front-end to the xrandr utility, and provides the ability to probe/manage various numbers of monitors.
NOTE: This utility is *not* tied into the build yet. I still want to do a bit more testing before enabling this by default.

1 files changed, 191 insertions, 0 deletions

diff --git a/lumina-xconfig/MainUI.cpp b/lumina-xconfig/MainUI.cpp
new file mode 100644
index 00000000..a4131649
--- /dev/null
+++ b/lumina-xconfig/MainUI.cpp
@@ -0,0 +1,191 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include "MainUI.h"
+#include "ui_MainUI.h"
+
+#include <LuminaXDG.h>
+#include <LuminaUtils.h>
+
+#include <QTimer>
+
+MainUI::MainUI() : QMainWindow(), ui(new Ui::MainUI){
+  ui->setupUi(this);
+  loadIcons();
+  //Fill the location list with the valid entries
+  ui->combo_location->clear();
+    ui->combo_location->addItem(tr("Right Of"), "--right-of");
+    ui->combo_location->addItem(tr("Left Of"), "--left-of");
+
+  connect(ui->push_close, SIGNAL(clicked()), this, SLOT(close()) );
+  connect(ui->push_rescan, SIGNAL(clicked()), this, SLOT(UpdateScreens()) );
+  connect(ui->push_activate, SIGNAL(clicked()), this, SLOT(ActivateScreen()) );
+  connect(ui->tool_deactivate, SIGNAL(clicked()), this, SLOT(DeactivateScreen()) );
+  connect(ui->tool_moveleft, SIGNAL(clicked()), this, SLOT(MoveScreenLeft()) );
+  connect(ui->tool_moveright, SIGNAL(clicked()), this, SLOT(MoveScreenRight()) );
+  connect(ui->list_screens, SIGNAL(itemSelectionChanged()),this, SLOT(ScreenSelected()) );
+  QTimer::singleShot(0, this, SLOT(UpdateScreens()) );
+}
+
+MainUI::~MainUI(){
+	
+}
+
+void MainUI::loadIcons(){
+  this->setWindowIcon( LXDG::findIcon("preferences-system-windows-actions","") );
+  ui->tool_deactivate->setIcon( LXDG::findIcon("list-remove","") );
+  ui->tool_moveleft->setIcon( LXDG::findIcon("arrow-left","") );
+  ui->tool_moveright->setIcon( LXDG::findIcon("arrow-right","") );
+  ui->push_activate->setIcon( LXDG::findIcon("list-add","") );
+  ui->push_rescan->setIcon( LXDG::findIcon("view-refresh","") );
+  ui->push_close->setIcon( LXDG::findIcon("window-close","") );
+}
+
+void MainUI::UpdateScreens(){
+  //First probe the server for current screens
+  SCREENS.clear();
+  QStringList info = LUtils::getCmdOutput("xrandr -q");
+  ScreenInfo cscreen;
+  for(int i=0; i<info.length(); i++){
+    if(info[i].contains("connected") ){
+      //qDebug() << "xrandr info:" << info[i];
+      if(!cscreen.ID.isEmpty()){ 
+	SCREENS << cscreen; //current screen finished - save it into the array
+	cscreen = ScreenInfo(); //Now create a new structure      
+      } 
+      QString dev = info[i].section(" ",0,0); //device ID
+      QString devres = info[i].section("(",0,0).split(" ",QString::SkipEmptyParts).last();
+      qDebug() << " - ID:" <<dev;
+      //qDebug() << " - Res:" << devres;
+      if( !devres.contains("x") || !devres.contains("+") ){ devres.clear(); }
+      //qDebug() << " - Res (modified):" << devres;
+      if(info[i].contains(" disconnected ") && !devres.isEmpty() ){
+	//Disable this device and restart (disconnected, but still attached to the X server)
+	DeactivateScreen(dev);
+	UpdateScreens();
+	return;
+      }else if( !devres.isEmpty() ){
+	//Device that is connected and attached (has a resolution)
+	qDebug() << "Create new Screen entry:" << dev << devres;
+	cscreen.ID = dev;
+	//Note: devres format: "<width>x<height>+<xoffset>+<yoffset>"
+	cscreen.geom.setRect( devres.section("+",-2,-2).toInt(), devres.section("+",-1,-1).toInt(), devres.section("x",0,0).toInt(), devres.section("+",0,0).section("x",1,1).toInt() ); 
+	
+      }else if(info[i].contains(" connected ")){
+        //Device that is connected, but not attached
+	qDebug() << "Create new Screen entry:" << dev << "none";
+	cscreen.ID = dev;
+	cscreen.order = -2; //flag this right now as a non-active screen
+      }
+    }else if( !cscreen.ID.isEmpty() && info[i].section("\t",0,0,QString::SectionSkipEmpty).contains("x")){
+      //available resolution for a device
+      cscreen.resList << info[i].section("\t",0,0,QString::SectionSkipEmpty);
+    }
+  }
+  if(!cscreen.ID.isEmpty()){ SCREENS << cscreen; } //make sure to add the last screen to the array
+  
+  //Now go through the screens and arrange them in order from left->right in the UI
+  bool found = true;
+  int xoffset = 0; //start at 0
+  int cnum = 0;
+  ui->list_screens->clear();
+  while(found){
+    found = false; //make sure to break out if a screen is not found
+    for(int i=0; i<SCREENS.length(); i++){
+      if(SCREENS[i].order != -1){} //already evaluated - skip it
+      else if(SCREENS[i].geom.x()==xoffset){
+	found = true; //make sure to look for the next one
+	xoffset = xoffset+SCREENS[i].geom.width(); //next number to look for
+	SCREENS[i].order = cnum; //assign the currrent order to it
+	cnum++; //get ready for the next one
+	QListWidgetItem *it = new QListWidgetItem();
+	  it->setTextAlignment(Qt::AlignCenter);
+	  it->setText( SCREENS[i].ID+"\n  ("+QString::number(SCREENS[i].geom.width())+"x"+QString::number(SCREENS[i].geom.height())+")  " );
+	  it->setWhatsThis(SCREENS[i].ID);
+	ui->list_screens->addItem(it);
+      }
+    }
+  }
+  
+  //Now update the available/current screens in the UI
+  ui->combo_availscreens->clear();
+  ui->combo_cscreens->clear();
+  for(int i=0; i<SCREENS.length(); i++){
+    if(SCREENS[i].order<0){
+      ui->combo_availscreens->addItem(SCREENS[i].ID);
+    }else{
+      ui->combo_cscreens->addItem(SCREENS[i].ID);
+    }
+  }
+  ui->group_avail->setVisible( ui->combo_availscreens->count()>0 );
+  ScreenSelected(); //update buttons
+}
+
+void MainUI::ScreenSelected(){
+  QListWidgetItem *item = ui->list_screens->currentItem();
+  if(item==0){
+    //nothing selected
+    ui->tool_deactivate->setEnabled(false);
+    ui->tool_moveleft->setEnabled(false);
+    ui->tool_moveright->setEnabled(false);
+  }else{
+    //Item selected
+    ui->tool_deactivate->setEnabled(ui->list_screens->count()>1);
+    ui->tool_moveleft->setEnabled(ui->list_screens->row(item) > 0);
+    ui->tool_moveright->setEnabled(ui->list_screens->row(item) < (ui->list_screens->count()-1));
+  }
+}
+
+void MainUI::MoveScreenLeft(){
+  QListWidgetItem *item = ui->list_screens->currentItem();
+  if(item==0){ return; } //no selection
+  //Get the current ID
+  QString CID = item->whatsThis();
+  //Now get the ID of the one on the left
+  item = ui->list_screens->item( ui->list_screens->row(item)-1 );
+  if(item == 0){ return; } //no item on the left (can't go left)
+  QString LID = item->whatsThis(); //left ID
+  //Now run the command
+  LUtils::runCmd("xrandr", QStringList() << "--output" << CID << "--left-of" << LID << "--auto");
+  QTimer::singleShot(500, this, SLOT(UpdateScreens()) );
+}
+
+void MainUI::MoveScreenRight(){
+  QListWidgetItem *item = ui->list_screens->currentItem();
+  if(item==0){ return; } //no selection
+  //Get the current ID
+  QString CID = item->whatsThis();
+  //Now get the ID of the one on the left
+  item = ui->list_screens->item( ui->list_screens->row(item)+1 );
+  if(item == 0){ return; } //no item on the right (can't go right)
+  QString RID = item->whatsThis(); //right ID
+  //Now run the command
+  LUtils::runCmd("xrandr", QStringList() << "--output" << CID << "--right-of" << RID << "--auto");
+  QTimer::singleShot(500, this, SLOT(UpdateScreens()) );
+}
+
+void MainUI::DeactivateScreen(QString device){
+  if(device.isEmpty()){
+    //Get the currently selected device
+    QListWidgetItem *item = ui->list_screens->currentItem();
+    if(item==0){ return; } //no selection
+    //Get the current ID
+    device = item->whatsThis();
+  }
+  if(device.isEmpty()){ return; } //nothing found
+  LUtils::runCmd("xrandr", QStringList() << "--output" << device << "--off");
+  QTimer::singleShot(500, this, SLOT(UpdateScreens()) );
+}
+
+void MainUI::ActivateScreen(){
+  //Assemble the command;
+  QString ID = ui->combo_availscreens->currentText();
+  QString DID = ui->combo_cscreens->currentText();
+  QString loc = ui->combo_location->currentData().toString();
+  if(ID.isEmpty() || DID.isEmpty() || loc.isEmpty()){ return; } //invalid inputs
+  LUtils::runCmd("xrandr", QStringList() << "--output" << ID << loc << DID <<"--auto");
+  QTimer::singleShot(500, this, SLOT(UpdateScreens()) );
+}