1 files changed, 191 insertions, 0 deletions
diff --git a/src-qt5/core-utils/lumina-xconfig/ScreenSettings.cpp b/src-qt5/core-utils/lumina-xconfig/ScreenSettings.cpp
new file mode 100644
index 00000000..c9a833c3
--- /dev/null
+++ b/src-qt5/core-utils/lumina-xconfig/ScreenSettings.cpp
@@ -0,0 +1,191 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2016, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include "ScreenSettings.h"
+#include <LuminaUtils.h>
+#include <QDebug>
+#include <QSettings>
+
+//Reset current screen config to match previously-saved settings
+void RRSettings::ApplyPrevious(){
+  QSettings set("lumina-desktop","lumina-xconfig");
+  set.beginGroup("MonitorSettings");
+  //Setup a couple lists
+  QStringList devs = set.childGroups(); //known/saved devices
+  QList<ScreenInfo> screens = RRSettings::CurrentScreens();
+  QStringList lastactive = set.value("lastActive",QStringList()).toStringList();
+  //Now go through all the saved settings and put that info into the array
+  QString primary;
+  QStringList avail;
+  for(int i=0; i<screens.length(); i++){
+    //if(screens[i].order>=0){screens[i].order = -1; } //reset all screen orders (need to re-check all)
+    if(devs.contains(screens[i].ID) && screens[i].isavailable){ //only load settings for monitors which are currently attached
+      set.beginGroup(screens[i].ID);
+        screens[i].geom = set.value("geometry", QRect()).toRect();
+        screens[i].isprimary = set.value("isprimary", false).toBool();
+        if(screens[i].isprimary){ primary = screens[i].ID; }
+        screens[i].isactive = lastactive.contains(screens[i].ID);
+        screens[i].order = (screens[i].isactive ? -1 : -3); //check/ignore
+      set.endGroup();
+    }else if(screens[i].isavailable){
+      screens[i].order = -2; //needs activation/placement
+    }else{
+      screens[i].order = -3; //ignored
+    }
+    //Now clean up the list as needed
+    if(screens[i].order < -2){ screens.removeAt(i); i--; } //just remove it (less to loop through later)
+    else{ avail << screens[i].ID; } //needed for some checks later - make it simple
+  }
+  //NOTE ABOUT orders: -1: check geom, -2: auto-add to end, -3: ignored
+  
+  //Quick checks for simple systems - just use current X config as-is
+  if(devs.isEmpty() && (avail.filter("LVDS").isEmpty() || screens.length()==1) ){ return; } 
+
+  //Typical ID's: LVDS-[], DVI-I-[], DP-[], HDMI-[], VGA-[]
+  //"LVDS" is the built-in laptop display normally
+  if(primary.isEmpty()){
+    QStringList priority; priority << "LVDS" << "DP" << "HDMI" << "DVI" << "VGA";
+    for(int i=0; i<priority.length() && primary.isEmpty(); i++){
+      QStringList filter = avail.filter(priority[i]);
+      if(!filter.isEmpty()){ filter.sort(); primary = filter.first(); }
+    }
+    if(primary.isEmpty()){ primary = avail.first(); }
+  }
+  //Ensure only one monitor is primary, and reset a few flags
+  for(int i=0; i<screens.length(); i++){  
+    if(screens[i].ID!=primary){ screens[i].isprimary = false; }  
+    screens[i].isactive = true; //we want all these monitors to be active eventually
+  }
+  // Handle all the available monitors
+  int handled = 0;
+  int cx = 0; //current x point
+  while(handled<screens.length()){
+    //Go through horizontally and place monitors (TO-DO: Vertical placement not handled yet)
+    int next = -1;
+    int diff = -1;
+    for(int i=0; i<screens.length(); i++){
+      if(screens[i].order==-1){
+        if(diff<0 || ((screens[i].geom.x()-cx) < diff)){
+          diff = screens[i].geom.x()-cx;
+          next = i;
+        }
+      }
+    }//end loop over screens
+    if(next<0){
+      //Go through and start adding the non-assigned screens to the end
+      for(int i=0; i<screens.length(); i++){
+        if(screens[i].order==-2){
+          if(diff<0 || ((screens[i].geom.x()-cx) < diff)){
+            diff = screens[i].geom.x()-cx;
+            next = i;
+          }
+        }
+      } //end loop over screens
+    }
+    if(next>=0){ 
+      cx+=screens[next].geom.width();
+      screens[next].order = handled; handled++; 
+    }else{
+      //Still missing monitors (vertical alignment?)
+      qDebug() << "Unhandled Monitors:" << screens.length()-handled;
+      break;
+    }
+  }
+  //Now reset the display with xrandr
+  RRSettings::Apply(screens);
+}
+
+//Read the current screen config from xrandr
+QList<ScreenInfo> RRSettings::CurrentScreens(){
+  QList<ScreenInfo> SCREENS;
+  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      
+      } 
+      //qDebug() << "Line:" << info[i];
+      QString dev = info[i].section(" ",0,0); //device ID
+      //The device resolution can be either the 3rd or 4th output - check both
+      QString devres = info[i].section(" ",2,2, QString::SectionSkipEmpty);
+      if(!devres.contains("x")){ devres = info[i].section(" ",3,3,QString::SectionSkipEmpty); }
+      if(!devres.contains("x")){ devres.clear(); }
+      qDebug() << " - ID:" <<dev << "Current Geometry:" << devres;
+      //qDebug() << " - Res:" << devres;
+      if( !devres.contains("x") || !devres.contains("+") ){ devres.clear(); }
+      //qDebug() << " - Res (modified):" << devres;
+      if(info[i].contains(" disconnected ") && !devres.isEmpty() ){
+        //Device disconnected, but still active on X
+	cscreen.isavailable = false;
+        cscreen.isactive = true;
+     }else if( !devres.isEmpty() ){
+        cscreen.isprimary = info[i].contains(" primary ");
+	//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() ); 
+	cscreen.isavailable = true;
+        cscreen.isactive = true;
+      }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
+        cscreen.isavailable = true;
+        cscreen.isactive = false;
+      }
+    }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);
+    }
+  } //end loop over primary info lines
+  if(!cscreen.ID.isEmpty()){ SCREENS << cscreen; } //make sure to add the last screen to the array
+  return SCREENS;
+}
+
+//Save the screen config for later
+bool RRSettings::SaveScreens(QList<ScreenInfo> screens){
+  QSettings set("lumina-desktop","lumina-xconfig");
+  set.beginGroup("MonitorSettings");
+  //Setup a couple lists
+  QStringList olddevs = set.childGroups();
+  QStringList active;
+  //Now go through all the current screens and save that info
+  for(int i=0; i<screens.length(); i++){
+    olddevs.removeAll(screens[i].ID); //this is still a valid device
+    if(screens[i].isactive){ active << screens[i].ID; }
+    set.beginGroup(screens[i].ID);
+      set.setValue("geometry", screens[i].geom);
+      set.setValue("isprimary", screens[i].isprimary);
+    set.endGroup();
+  }
+  set.setValue("lastActive",active);
+  //Clean up any old device settings (no longer available for this hardware)
+  for(int i=0; i<olddevs.length(); i++){
+    set.remove(olddevs[i]);
+  }
+  return true;
+}
+	
+//Apply screen configuration
+void RRSettings::Apply(QList<ScreenInfo> screens){
+  //Read all the settings and create the xrandr options to maintain these settings
+  QStringList opts;
+  qDebug() << "Apply:" << screens.length();
+  for(int i=0; i<screens.length(); i++){
+    qDebug() << " -- Screen:" << i << screens[i].ID << screens[i].isactive << screens[i].order;
+    if(screens[i].order <0 || !screens[i].isactive){ continue; } //skip this screen - non-active
+    opts << "--output" << screens[i].ID << "--mode" << QString::number(screens[i].geom.width())+"x"+QString::number(screens[i].geom.height());
+    //opts << "--pos" << QString::number(screens[i].geom.x())+"x"+QString::number(screens[i].geom.y());
+    if(screens[i].isprimary){ opts << "--primary"; }
+  }
+  qDebug() << "Run command: xrandr" << opts;
+  LUtils::runCmd("xrandr", opts);
+}