Add the beginnings of a new RootWindow class for providing the multi-monitor virtual root functionality with all wallpaper painting routines embedded within.

3 files changed, 225 insertions, 0 deletions

diff --git a/src-qt5/core/libLumina/RootWindow.cpp b/src-qt5/core/libLumina/RootWindow.cpp
new file mode 100644
index 00000000..49d3fcac
--- /dev/null
+++ b/src-qt5/core/libLumina/RootWindow.cpp
@@ -0,0 +1,162 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2016, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include "RootWindow.h"
+
+// === PUBLIC ===
+RootWindow::RootWindow(){
+
+}
+
+RootWindow::~RootWindow(){
+
+}
+
+void RootWindow::start(){
+
+}
+
+// === PRIVATE ===
+void RootWindow::updateScreenPixmap(ScreenInfo *info){
+  QPixmap pix(info->area.size());
+  if(info->scale == RootWindow::SolidColor){
+    QColor color;
+    if(info->file.startsWith("rgb("))){
+      QStringList colors = bgFile.section(")",0,0).section("(",1,1).split(",");
+      color = QColor(colors[0].toInt(), colors[1].toInt(), colors[2].toInt());
+    }else{
+      color = QColor(info->file);
+    }
+    pix.fill(color);
+  }else{
+    QPixmap raw(info->file); //load the image from file
+    //Now apply the proper aspect ratio as needed
+    if(info->scale == RootWindow::Stretch || info->scale == RootWindow::Full || info->scale == RootWindow::Fit){
+       Qt::AspectRatioMode armode = Qt::KeepAspectRatio; 
+       if(info->scale == RootWindow::Stretch ){  armode = Qt::IgnoreAspectRatio; }
+      else if(info->scale == RootWindow::Full ){ armode = Qt::KeepAspectRatioByExpanding; }
+      if(raw.height()!=info->area.height() && raw.width() !=info->area.width()){
+        raw = raw.scaled(info->area, armode);
+      }
+    }
+    //Now calculate offset and draw width/height
+    QRect drawRect(0,0, raw.width(), raw.height());
+    if(info->scale == RootWindow::Full ){ 
+      drawRect.moveTo( (info->area.width() - raw.width())/2, (info->area.height() - raw.height())/2 );
+    }else if(info->scale == RootWindow::Fit ){
+      drawRect.moveTo( (info->area.width() - raw.width())/2, (info->area.height() - raw.height())/2 );    
+    }else if(info->scale == RootWindow::Center ){
+      drawRect.moveTo( (info->area.width() - raw.width())/2, (info->area.height() - raw.height())/2 );    
+    }else if(info->scale == RootWindow::Tile ){
+      //Draw the entire area - no offset
+      drawRect.setHeight(info->area.height());
+      drawRect.setWidth(info->area.width()); 
+    }else if(info->scale == RootWindow::BottomLeft ){
+      drawRect.moveTo( 0 , info->area.height() - raw.height() );
+    }else if(info->scale == RootWindow::BottomRight ){
+      drawRect.moveTo( (info->area.width() - raw.width()), (info->area.height() - raw.height()) );
+    }else if(info->scale == RootWindow::BottomCenter ){
+      drawRect.moveTo( (info->area.width() - raw.width())/2, info->area.height() - raw.height()) );
+    }else if(info->scale == RootWindow::TopLeft ){
+      drawRect.moveTo( 0, 0 );
+    }else if(info->scale == RootWindow::TopRight ){
+      drawRect.moveTo( (info->area.width() - raw.width()), 0);
+    }else if(info->scale == RootWindow::TopCenter ){
+      drawRect.moveTo( (info->area.width() - raw.width())/2, 0);
+    }else if(info->scale == RootWindow::CenterLeft ){
+      drawRect.moveTo( 0, (info->area.height() - raw.height())/2 );
+    }else if(info->scale == RootWindow::CenterRight ){
+      drawRect.moveTo( (info->area.width() - raw.width()), (info->area.height() - raw.height())/2 );
+    }
+
+  QPainter P(&pix);
+    P.setBrush(raw);
+    P.setBrushOrigin(dx,dy);
+    P.drawRect(dx,dy,
+} //end SolidColor Check
+
+  info.wallpaper = pix;
+}
+
+// === PUBLIC SLOTS ===
+void RootWindow::ResizeRoot(){
+  QList<QScreen*> scrns = QApplication::screens();
+  //Update all the screen locations and ID's in the WALLPAPERS list
+  QRect fullScreen;
+  QStringList validids;
+  //Update the size of the rootWindow itself
+  for(int i=0; i<scrns.length(); i++){
+    fullscreen = fullscreen.united(scrns[i]->geometry());
+    validids << scrns[i]->name();
+    for(int j=0; j<WALLPAPERS.length(); j++){
+      if(WALLPAPERS[j].id == scrn[i]->name()){
+        QSize oldsize = WALLPAPERS[j].area.size();
+        WALLPAPERS[j].area = scrn[i]->geometry();
+        if(oldsize != WALLPAPERS[j].area.size()){ updateScreenPixmap(&WALLPAPERS[j]); }
+        break;
+      }
+    }
+  }
+  //Now clean up any invalid screen info in the WALLPAPERS List
+  QStringList invalid;
+  for(int i=0; i<WALLPAPERS.length(); i++){
+    if(valid.contains(WALLPAPERS[i].id)){
+      valid.removeAll(WALLPAPERS[i].id); //Already handled - remove it from the list
+    }else{
+      invalid << WALLPAPERS[i].id;
+      WALLPAPERS.takeAt(i);
+      i--;
+    }
+  }
+  //Trigger a repaint and send out any signals
+  this->update();
+  emit RootResized();
+  if(!validids.isEmpty()){ emit NewScreens(valid); }
+  if(!invalid.isEmpty()){ emit RemoveScreens(invalid); }
+}
+
+void RootWindow::ChangeWallpaper(QString id, RootWindow::ScaleType scale, QString file){
+  bool found = false;
+  for(int i=0; i<WALLPAPERS.length() && !found; i++){
+    if(WALLPAPERS[i].id == id){ 
+      WALLPAPERS[i].scale = scale;
+      WALLPAPERS[i].file = file;
+      updateScreenPixmap(&WALLPAPERS[i]);
+      found = true;
+    }
+  }
+  if(!found){
+    //Need to create a new screeninfo structure
+    QList<QScreen*> scrns = QApplication::screens();
+    for(int i=0; i<srcns.length(); i++){
+      if(scrns[i].name()==id){
+        screeninfo info;
+          info.id = id;
+	  info.file = file;
+          info.scale = scale;
+          info.area = srcns[i]->geometry();
+         updateScreenPixmap(&info);
+        WALLPAPERS << info;
+        break;
+      }
+    }
+  } //end check for a new id
+
+}
+
+// === PRIVATE SLOTS ===
+
+// === PROTECTED ===
+void RootWindow::paintEvent(QPaintEvent *ev){
+  
+  if(!wallpaper.isNull()){
+    QPainter painter(this);
+    painter.setBrush(wallpaper);
+    painter.drawRect(ev->rect().adjusted(-1,-1,2,2));
+  }else{
+    QWidget::paintEvent(ev);
+  }
+}
diff --git a/src-qt5/core/libLumina/RootWindow.h b/src-qt5/core/libLumina/RootWindow.h
new file mode 100644
index 00000000..4893b0c7
--- /dev/null
+++ b/src-qt5/core/libLumina/RootWindow.h
@@ -0,0 +1,53 @@
+//===========================================
+//  Lumina Desktop source code
+//  Copyright (c) 2017, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+//  This class creates and manages a virtual "root" window
+//   for all monitors at all times.
+//===========================================
+#ifndef _LUMINA_ROOT_WINDOW_H
+#define _LUMINA_ROOT_WINDOW_H
+
+
+
+class RootWindow : public QWidget{
+	Q_OBJECT
+public:
+	enum ScaleType{ SingleColor, Stretch, Full, Fit, Center, Tile, BottomLeft, BottomRight, BottomCenter, \
+	  TopLeft, TopRight, TopCenter, CenterLeft, CenterRight};
+
+	RootWindow();
+	~RootWindow();
+	
+private:
+	struct screeninfo{
+	  QString id;
+	  QRect area;
+	  QString file;
+	  ScaleType scale;
+	  QPixmap wallpaper;
+	};
+
+	QList<screeninfo> WALLPAPERS;
+	void updateScreenPixmap(ScreenInfo *info); //used for recalculating the wallpaper pixmap based on file/area/scale as needed
+
+public slots:
+	void ResizeRoot();
+	void ChangeWallpaper(QString id, RootWindow::ScaleType scale, QString file);
+	    //Note: for "SingleColor" scaling the "file" variable should be "rgb(R,G,B)" or "#hexcode"
+
+private slots:
+
+protected:
+	void paintEvent(QPaintEvent *ev);
+
+signals:
+	void RootResized();
+	void NewScreens(QStringList); // [screen_id_1, screen_id_2, etc..]
+	void RemovedScreens(QStringList); // [screen_id_1, screen_id_2, etc..]
+
+};
+
+#endif
diff --git a/src-qt5/core/libLumina/RootWindow.pri b/src-qt5/core/libLumina/RootWindow.pri
new file mode 100644
index 00000000..7f2a144d
--- /dev/null
+++ b/src-qt5/core/libLumina/RootWindow.pri
@@ -0,0 +1,10 @@
+
+# Files
+SOURCES *= $${PWD}/RootWindow.cpp
+HEADERS *= $${PWD}/RootWindow.h
+
+INCLUDEPATH *= ${PWD}
+
+# include LUtils and LuminaX11
+include(LUtils.pri)
+include(LuminaX11.pri)