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path: root/src-qt5/core-utils/lumina-xconfig/MainUI.cpp
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//===========================================
//  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 <LUtils.h>

#include <QTimer>

MainUI::MainUI() : QMainWindow(), ui(new Ui::MainUI){
  ui->setupUi(this);
  loadIcons();
  scaleFactor = 1/15.0; //simple default value
  ui->combo_rotation->clear();
    ui->combo_rotation->addItem(tr("None"), 0);
    ui->combo_rotation->addItem(tr("Left"), -90);
    ui->combo_rotation->addItem(tr("Right"), 90);
    ui->combo_rotation->addItem(tr("Inverted"), 180);

  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->tool_save, SIGNAL(clicked()), this, SLOT(SaveSettings()) );
  connect(ui->tool_applyconfig, SIGNAL(clicked()), this, SLOT(ApplyChanges()) );
  connect(ui->mdiArea, SIGNAL(subWindowActivated(QMdiSubWindow*)),this, SLOT(ScreenSelected()) );
  connect(ui->tool_tile, SIGNAL(clicked()), this, SLOT(tileScreens()) );
  connect(ui->combo_availscreens, SIGNAL(currentIndexChanged(int)), this, SLOT(updateNewScreenResolutions()) );
  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","") );
  ui->tabWidget->setTabIcon(0, LXDG::findIcon("preferences-desktop-display","") );
  ui->tabWidget->setTabIcon(1, LXDG::findIcon("list-add","") );
  ui->tool_applyconfig->setIcon( LXDG::findIcon("dialog-ok-apply","") );
}

QString MainUI::currentSelection(){
  QMdiSubWindow *tmp = ui->mdiArea->activeSubWindow();
  if(tmp!=0){ return tmp->whatsThis(); }
  else{ return ""; }
}

ScreenInfo MainUI::currentScreenInfo(){
  QString item = currentSelection();
  if(item!=0){
    for(int i=0; i<SCREENS.length(); i++){
      if(SCREENS[i].ID==item){ return SCREENS[i]; }
    }
  }
  //Fallback when nothing found/selected
  return ScreenInfo();
}

void MainUI::AddScreenToWidget(ScreenInfo screen){
  qDebug() << "Add Screen To Widget:" << screen.ID << screen.geom;
  QLabel *lab = new QLabel(this);
  lab->setAlignment(Qt::AlignCenter);
  QMdiSubWindow *it = ui->mdiArea->addSubWindow(lab, Qt::Tool | Qt::CustomizeWindowHint | Qt::WindowTitleHint);
  it->setWindowTitle(screen.ID);
  lab->setText(QString::number(screen.geom.width())+"x"+QString::number(screen.geom.height()));

  it->setWhatsThis(screen.ID);
  QRect scaled( screen.geom.topLeft()*scaleFactor, screen.geom.size()*scaleFactor);
  qDebug() << " - Scaled:" << scaled;
  it->show();
  it->setGeometry(scaled); //scale it down for the display
  it->setFixedSize(scaled.size());

}

void MainUI::SyncBackend(){
  QString item = currentSelection();
  if(item.isEmpty()){ return; } //nothing to do
  QString newres = ui->combo_resolution->currentData().toString().section("(",0,0).simplified();
  if(newres.isEmpty()){ return; } //nothing to do
  //qDebug() << "Apply Screen Changes" << item << "->" << newres;
  //Adjust the order of the two screens
  bool setprimary = ui->check_primary->isChecked();
  QList<QMdiSubWindow*> windows = ui->mdiArea->subWindowList();
  for(int i=0; i<SCREENS.length(); i++){
    if(SCREENS[i].ID == item){
      SCREENS[i].geom.setWidth(newres.section("x",0,0).toInt());
      SCREENS[i].geom.setHeight(newres.section("x",1,1).toInt());
      //qDebug() << " - New Geom:" << SCREENS[i].geom;
      SCREENS[i].rotation = ui->combo_rotation->currentData().toInt();
    }
    if(setprimary){ SCREENS[i].isprimary = (SCREENS[i].ID==item); }
    //Find the window associated with this screen
    for(int s=0; s<windows.length(); s++){
      if(windows[s]->whatsThis()==SCREENS[i].ID){
        SCREENS[i].geom.moveTopLeft( windows[s]->geometry().topLeft()/scaleFactor );
        if(SCREENS[i].applyChange<1){ SCREENS[i].applyChange = (windows[s]->widget()->isEnabled() ? 0 : 1); } //disabled window is one that will be removed
      }
    }
  }
}

void MainUI::UpdateScreens(){
  //First probe the server for current screens
  SCREENS = RRSettings::CurrentScreens();
  //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;
  QString csel = currentSelection();
  //Clear all the current widgets
  while(ui->mdiArea->currentSubWindow()!=0 ){
    QMdiSubWindow *tmp = ui->mdiArea->currentSubWindow();
    tmp->widget()->deleteLater();
    ui->mdiArea->removeSubWindow(tmp);
    tmp->deleteLater();
  }
  //Now add all the active screens to the display
  for(int i=0; i<SCREENS.length(); i++){
    if(SCREENS[i].isactive){ AddScreenToWidget(SCREENS[i]); }
  }

  //Now update the available/current screens in the UI
  ui->combo_availscreens->clear();
  for(int i=0; i<SCREENS.length(); i++){
    if(!SCREENS[i].isactive && SCREENS[i].isavailable){
      ui->combo_availscreens->addItem(SCREENS[i].ID);
    }
  }
  if(ui->combo_availscreens->count()<1){
    ui->group_avail->setVisible(false);
    ui->tabWidget->setCurrentIndex(0);
    ui->tabWidget->setTabEnabled(1,false);
  }else{
    ui->group_avail->setVisible(true);
    ui->tabWidget->setTabEnabled(1,true);
  }
  //if(ui->list_screens->currentItem()==0){ ui->list_screens->setCurrentRow(0); }
  ScreenSelected(); //update buttons
  updateNewScreenResolutions();
}

void MainUI::ScreenSelected(){
  QString item = currentSelection();
  //QListWidgetItem *item = ui->list_screens->currentItem();
  if(item.isEmpty()){
    //nothing selected
    ui->tool_deactivate->setEnabled(false);
    ui->tab_config->setEnabled(false);
  }else{
    //Item selected
    ui->tool_deactivate->setEnabled(true);
    ui->tab_config->setEnabled(true);
    //Update the info available on the config tab
    ScreenInfo cur = currentScreenInfo();
    ui->combo_resolution->clear();
    QString cres = QString::number(cur.geom.width())+"x"+QString::number(cur.geom.height());
    for(int i=0; i<cur.resList.length(); i++){
      QString res = cur.resList[i].section(" ",0,0, QString::SectionSkipEmpty);
      if(cur.resList[i].contains("+")){ ui->combo_resolution->addItem( QString(tr("%1 (Recommended)")).arg(res), res); }
      else{ui->combo_resolution->addItem(res, res); }
      if(cur.resList[i].contains(cres)){ ui->combo_resolution->setCurrentIndex(i); }
    }
    ui->check_primary->setChecked( cur.isprimary );
    int index = ui->combo_rotation->findData( cur.rotation );
    if(index<0){ index = 0; }
    ui->combo_rotation->setCurrentIndex(index);
  }
}

void MainUI::updateNewScreenResolutions(){
  QString id = ui->combo_availscreens->currentText();
  for(int i=0; i<SCREENS.length(); i++){
    if(SCREENS[i].ID==id){
      ui->combo_resolutions->clear();
      for(int r=0; r<SCREENS[i].resList.length(); r++){
        ui->combo_resolutions->addItem(SCREENS[i].resList[r].section(" ",0,0, QString::SectionSkipEmpty));
        if(SCREENS[i].resList[r].contains("+")){ ui->combo_resolutions->setCurrentIndex(r); } //preferred resolution
      }
      break;
    }
  }
}

void MainUI::tileScreens(bool activeonly){
  QList<QMdiSubWindow*> wins = ui->mdiArea->subWindowList();
  QRegion total;
  int xpos, ypos;
  xpos = ypos = 0;
  QMdiSubWindow *cur = 0;
  float diff;
  while(!wins.isEmpty()){
    cur=0;
    diff = -1;
    //Scan for the window closest to the current X value
    for(x=0; x<wins.length(); x++){
      //Scan for the window closest to the current Y value
      for(int y=0; y<wins.length(); y++){
        if(cur==0){ cur = wins[y]; }
        else if(cur==wins[y]){ continue; } //skip it
        else if(wins[y]->geometry().y()<cur->geometry().y() && wins[y]->geometry().y()>ypos){ cur = wins[y]; }
      }
    }
    if(cur!=0){
      
    }
  }
}

void MainUI::DeactivateScreen(){
  QMdiSubWindow *cur = ui->mdiArea->currentSubWindow();
  if(cur==0){ return; }
  cur->widget()->setEnabled( !cur->widget()->isEnabled() ); //toggle it between enabled/disabled
}

void MainUI::ActivateScreen(){
  //Assemble the command;
  QString ID = ui->combo_availscreens->currentText();
  QStringList res = ui->combo_resolutions->currentText().split("x");
  //Find the screen infor associated with this ID
  for(int i=0; i<SCREENS.length(); i++){
    if(SCREENS[i].ID==ID){
      SCREENS[i].isactive = true;
      SCREENS[i].geom.setSize(  QSize(res[0].toInt(), res[1].toInt()) );
      SCREENS[i].applyChange = 2; //need to activate this monitor
      AddScreenToWidget(SCREENS[i]);
      break;
    }
  }
}

void MainUI::ApplyChanges(){
  SyncBackend();
  //Now run the command
  RRSettings::Apply(SCREENS);
  //And update the UI and WM in a moment
  QTimer::singleShot(500, this, SLOT(UpdateScreens()) );
  QTimer::singleShot(1000, this, SLOT(RestartFluxbox()) );
}

void MainUI::SaveSettings(){
  SyncBackend();
  RRSettings::SaveScreens(SCREENS);
}

void MainUI::RestartFluxbox(){
  QProcess::startDetached("killall fluxbox");
}
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