Fix up some multi-monitor issues with Lumina2 (Qt auto-scaling is a really bad idea)

3 files changed, 9 insertions, 4 deletions

diff --git a/src-qt5/core/libLumina/RootWindow.cpp b/src-qt5/core/libLumina/RootWindow.cpp
index fda9ca0f..90ad8739 100644
--- a/src-qt5/core/libLumina/RootWindow.cpp
+++ b/src-qt5/core/libLumina/RootWindow.cpp
@@ -10,6 +10,8 @@
 #include <QScreen>
 #include <QDebug>
 
+#define DEBUG 1
+
 // === PUBLIC ===
 RootWindow::RootWindow() : QWidget(0, Qt::Window | Qt::BypassWindowManagerHint | Qt::WindowStaysOnBottomHint){
   qRegisterMetaType<WId>("WId");
@@ -100,12 +102,14 @@ void RootWindow::updateScreenPixmap(screeninfo *info){
 
 // === PUBLIC SLOTS ===
 void RootWindow::ResizeRoot(){
+  if(DEBUG){ qDebug() << "Resize Root..."; }
   QList<QScreen*> scrns = QApplication::screens();
   //Update all the screen locations and ID's in the WALLPAPERS list
   QRect fullscreen;
   QStringList valid;
   //Update the size of the rootWindow itself
   for(int i=0; i<scrns.length(); i++){
+    if(DEBUG){ qDebug() << " - Found Screen:" << scrns[i]->name() << scrns[i]->geometry(); }
     fullscreen = fullscreen.united(scrns[i]->geometry());
     valid << scrns[i]->name();
     for(int j=0; j<WALLPAPERS.length(); j++){
@@ -129,11 +133,13 @@ void RootWindow::ResizeRoot(){
     }
   }
   //Trigger a repaint and send out any signals
+  if(DEBUG){ qDebug() << " - FullScreen Geometry:" << fullscreen; }
   this->setGeometry(fullscreen);
   this->update();
   emit RootResized(fullscreen);
   if(!valid.isEmpty()){ emit NewScreens(valid); }
   if(!invalid.isEmpty()){ emit RemovedScreens(invalid); }
+  if(DEBUG){ qDebug() << " - Geom after change:" << this->geometry(); }
 }
 
 void RootWindow::ChangeWallpaper(QString id, RootWindow::ScaleType scale, QString file){
@@ -148,6 +154,7 @@ void RootWindow::ChangeWallpaper(QString id, RootWindow::ScaleType scale, QStrin
     }
   }
   if(!found){
+    ResizeRoot();
     //Need to create a new screeninfo structure
     QList<QScreen*> scrns = QApplication::screens();
     for(int i=0; i<scrns.length(); i++){
diff --git a/src-qt5/core/lumina-desktop-unified/LSession.cpp b/src-qt5/core/lumina-desktop-unified/LSession.cpp
index 0b9a9b35..60ed1a39 100644
--- a/src-qt5/core/lumina-desktop-unified/LSession.cpp
+++ b/src-qt5/core/lumina-desktop-unified/LSession.cpp
@@ -18,8 +18,6 @@
 NativeWindowSystem* Lumina::NWS = 0;
 NativeEventFilter* Lumina::NEF = 0;
 LScreenSaver* Lumina::SS = 0;
-//DesktopSettings* Lumina::SETTINGS = 0;
-//Lumina::WM = 0;
 QThread* Lumina::EVThread = 0;
 RootWindow* Lumina::ROOTWIN = 0;
 XDGDesktopList* Lumina::APPLIST = 0;
@@ -49,7 +47,6 @@ LSession::LSession(int &argc, char ** argv) : LSingleApplication(argc, argv, "lu
   //Now initialize the global objects (but do not start them yet)
   Lumina::NEF = new NativeEventFilter();
   Lumina::NWS = new NativeWindowSystem();
-  //Lumina::SETTINGS = new DesktopSettings();
   Lumina::SS = new LScreenSaver();
   //Now put the Native Window System into it's own thread to keep things snappy
   Lumina::EVThread = new QThread();
@@ -67,7 +64,6 @@ LSession::~LSession(){
    //Clean up the global objects as needed
   if(Lumina::NEF!=0){ Lumina::NEF->deleteLater(); }
   if(Lumina::NWS!=0){ Lumina::NWS->deleteLater(); }
-  //if(Lumina::EFILTER!=0){ Lumina::EFILTER->deleteLater(); }
   if(Lumina::SS!=0){ Lumina::SS->deleteLater(); }
   if(Lumina::EVThread!=0){
     if(Lumina::EVThread->isRunning()){ Lumina::EVThread->quit(); }
diff --git a/src-qt5/core/lumina-desktop-unified/main.cpp b/src-qt5/core/lumina-desktop-unified/main.cpp
index 0b67de46..8e40f7eb 100644
--- a/src-qt5/core/lumina-desktop-unified/main.cpp
+++ b/src-qt5/core/lumina-desktop-unified/main.cpp
@@ -30,6 +30,8 @@ int main(int argc, char ** argv)
     setenv("XDG_CURRENT_DESKTOP","Lumina",1);
     setenv("QT_NO_GLIB", "1", 1); //Disable the glib event loop within Qt at runtime (performance hit + bugs)
     unsetenv("QT_QPA_PLATFORMTHEME"); //causes issues with Lumina themes - not many people have this by default...
+    unsetenv("QT_AUTO_SCREEN_SCALE_FACTOR"); //need exact-pixel measurements (no fake scaling)
+
     //Startup the session
     if(DEBUG){ qDebug() << "Starting unified session"; }
     LSession a(argc, argv);