Fix sizing of properties dialog

We don't need to calculate sizing ourselves, widgets do that.

We also don't need to set maximum size ourselves manually, we already
use KSqueezedLabels to avoid having to do that for very large strings.

ui/propertiesdialog.cpp

@@ -61,8 +61,6 @@ PropertiesDialog::PropertiesDialog(QWidget *parent, Okular::Document *doc)
     QString mimeName = info.get( Okular::DocumentInfo::MimeType ).section( QLatin1Char('/'), -1 ).toUpper();
     setWindowTitle( i18n( "%1 Properties", mimeName ) );
 
-    int valMaxWidth = 100;
-
     /* obtains the properties list, conveniently ordered */
     QStringList orderedProperties;
     orderedProperties << Okular::DocumentInfo::getKeyString( Okular::DocumentInfo::FilePath )
@@ -122,19 +120,15 @@ PropertiesDialog::PropertiesDialog(QWidget *parent, Okular::Document *doc)
             value = label;
         }
         layout->addRow( new QLabel( i18n( "%1:", titleString ) ), value);
-
-        // refine maximum width of 'value' labels
-        valMaxWidth = qMax( valMaxWidth, fontMetrics().width( valueString ) );
     }
 
     // FONTS
-    QVBoxLayout *page2Layout = 0;
     if ( doc->canProvideFontInformation() ) {
         // create fonts tab and layout it
         QFrame *page2 = new QFrame();
         m_fontPage = addPage(page2, i18n("&Fonts"));
         m_fontPage->setIcon( QIcon::fromTheme( QStringLiteral("preferences-desktop-font") ) );
-        page2Layout = new QVBoxLayout(page2);
+        QVBoxLayout *page2Layout = new QVBoxLayout(page2);
         // add a tree view
         QTreeView *view = new QTreeView(page2);
         view->setContextMenuPolicy(Qt::CustomContextMenu);
@@ -162,17 +156,8 @@ PropertiesDialog::PropertiesDialog(QWidget *parent, Okular::Document *doc)
         m_fontProgressBar->hide();
     }
 
-    // current width: left columnt + right column + dialog borders
-#pragma message("KF5 figure out margin/spacing")
-//  int width = layout->minimumSize().width() + valMaxWidth + 2 * marginHint() + spacingHint() + 30;
-    int width = layout->minimumSize().width() + valMaxWidth + 30;
-    if ( page2Layout )
-//        width = qMax( width, page2Layout->sizeHint().width() + marginHint() + spacingHint() + 31 );
-        width = qMax( width, page2Layout->sizeHint().width() + 31 );
-    // stay inside the 2/3 of the screen width
-    QRect screenContainer = QApplication::desktop()->screenGeometry( this );
-    width = qMin( width, 2*screenContainer.width()/3 );
-    resize(width, 1);
+    // KPageDialog is a bit buggy, it doesn't fix its own sizeHint, so we have to manually resize
+    resize(layout->sizeHint());
 
     connect( pageWidget(), SIGNAL(currentPageChanged(KPageWidgetItem*,KPageWidgetItem*)),
              this, SLOT(pageChanged(KPageWidgetItem*,KPageWidgetItem*)) );