Use a disabled progressbar's palette for unselected files.

Thanks to evsh(Eugene Shalygin) for example code.

src/gui/properties/proplistdelegate.cpp

@@ -28,14 +28,12 @@
  * Contact : chris@qbittorrent.org
  */
 
-#include <QStyleOptionProgressBar>
-#include <QStyleOptionViewItem>
-#include <QStyleOptionComboBox>
 #include <QComboBox>
 #include <QModelIndex>
 #include <QPainter>
+#include <QPalette>
 #include <QProgressBar>
-#include <QApplication>
+#include <QStyleOptionProgressBar>
 
 #ifdef Q_OS_WIN
 #ifndef QBT_USES_QT5
@@ -51,6 +49,23 @@
 #include "proplistdelegate.h"
 #include "torrentcontentmodelitem.h"
 
+namespace {
+
+    QPalette progressBarDisabledPalette()
+    {
+        auto getPalette = []()
+        {
+            QProgressBar bar;
+            bar.setEnabled(false);
+            QStyleOptionProgressBar opt;
+            opt.initFrom(&bar);
+            return opt.palette;
+        };
+        static QPalette palette = getPalette();
+        return palette;
+    }
+}
+
 PropListDelegate::PropListDelegate(PropertiesWidget *properties, QObject *parent)
     : QItemDelegate(parent)
     , m_properties(properties)
@@ -85,8 +100,13 @@ void PropListDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opti
             newopt.progress = (int)progress;
             newopt.maximum = 100;
             newopt.minimum = 0;
-            newopt.state |= QStyle::State_Enabled;
             newopt.textVisible = true;
+            if (index.sibling(index.row(), PRIORITY).data().toInt() == prio::IGNORED) {
+                newopt.state &= ~QStyle::State_Enabled;
+                newopt.palette = progressBarDisabledPalette();
+            }
+            else
+                newopt.state |= QStyle::State_Enabled;
 #ifndef Q_OS_WIN
             QApplication::style()->drawControl(QStyle::CE_ProgressBar, &newopt, painter);
 #else

src/gui/torrentcontentfiltermodel.h

@@ -33,7 +33,6 @@
 
 #include <QSortFilterProxyModel>
 #include "torrentcontentmodelitem.h"
-#include "proplistdelegate.h"
 
 class TorrentContentModel;
 

src/gui/torrentcontentmodel.cpp

@@ -181,12 +181,14 @@ QVariant TorrentContentModel::data(const QModelIndex& index, int role) const
         return QVariant();
 
     TorrentContentModelItem* item = static_cast<TorrentContentModelItem*>(index.internalPointer());
+
     if ((index.column() == 0) && (role == Qt::DecorationRole)) {
         if (item->itemType() == TorrentContentModelItem::FolderType)
             return getDirectoryIcon();
         else
             return getFileIcon();
     }
+
     if ((index.column() == 0) && (role == Qt::CheckStateRole)) {
         if (item->data(TorrentContentModelItem::COL_PRIO).toInt() == prio::IGNORED)
             return Qt::Unchecked;
@@ -194,10 +196,11 @@ QVariant TorrentContentModel::data(const QModelIndex& index, int role) const
             return Qt::PartiallyChecked;
         return Qt::Checked;
     }
-    if (role != Qt::DisplayRole)
-        return QVariant();
 
+    if (role == Qt::DisplayRole)
         return item->data(index.column());
+
+    return QVariant();
 }
 
 Qt::ItemFlags TorrentContentModel::flags(const QModelIndex& index) const