introduce custom headerview for layouts

app/settings/controllers/layoutscontroller.cpp

@@ -62,8 +62,9 @@ Layouts::Layouts(QDialog *parent, Latte::Corona *corona, QTableView *view)
       m_corona(corona),
       m_model(new Model::Layouts(this, corona)),
       m_proxyModel(new QSortFilterProxyModel(this)),
-      m_view(view)
-{
+      m_view(view),
+      m_headerView(new Settings::Layouts::HeaderView(Qt::Horizontal, m_parentDialog))
+{   
     setOriginalInMultipleMode(m_corona->layoutsManager()->memoryUsage() == Types::MultipleLayouts);
 
     m_proxyModel->setSourceModel(m_model);
@@ -103,6 +104,7 @@ QTableView *Layouts::view() const
 void Layouts::initView()
 {
     m_view->setModel(m_proxyModel);
+    m_view->setHorizontalHeader(m_headerView);
     m_view->horizontalHeader()->setStretchLastSection(true);
     m_view->verticalHeader()->setVisible(false);
     m_view->setSortingEnabled(true);

app/settings/controllers/layoutscontroller.h

@@ -24,6 +24,7 @@
 // local
 #include "../data/layoutdata.h"
 #include "../data/layoutstable.h"
+#include "../delegates/layoutsheaderview.h"
 #include "../models/layoutsmodel.h"
 #include "../../lattecorona.h"
 #include "../../../liblatte2/types.h"
@@ -102,6 +103,7 @@ private:
     QDialog *m_parentDialog{nullptr};
     Latte::Corona *m_corona{nullptr};
     QTableView *m_view{nullptr};
+    Settings::Layouts::HeaderView *m_headerView{nullptr};
 
     //! original data
     bool o_originalInMultipleMode{false};

app/settings/delegates/CMakeLists.txt

@@ -5,6 +5,7 @@ set(lattedock-app_SRCS
     ${CMAKE_CURRENT_SOURCE_DIR}/backgroundcmbitemdelegate.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/checkboxdelegate.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/layoutnamedelegate.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/layoutsheaderview.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/shareddelegate.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/persistentmenu.cpp
     PARENT_SCOPE

app/settings/delegates/layoutsheaderview.cpp

@@ -0,0 +1,67 @@
+/*
+*  Copyright 2020 Michail Vourlakos <mvourlakos@gmail.com>
+*
+*  This file is part of Latte-Dock
+*
+*  Latte-Dock is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License as
+*  published by the Free Software Foundation; either version 2 of
+*  the License, or (at your option) any later version.
+*
+*  Latte-Dock is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License
+*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "layoutsheaderview.h"
+
+// local
+#include "../models/layoutsmodel.h"
+
+// Qt
+#include <QAbstractItemModel>
+#include <QPainter>
+
+
+namespace Latte {
+namespace Settings {
+namespace Layouts {
+
+HeaderView::HeaderView(Qt::Orientation orientation, QWidget *parent)
+    : QHeaderView(orientation, parent)
+{
+    setSectionsClickable(true);
+    setSectionsMovable(true);
+    setSortIndicatorShown(true);
+}
+
+void HeaderView::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const
+{
+    if (logicalIndex == Model::Layouts::BACKGROUNDCOLUMN) {
+        QString text = model()->headerData(Model::Layouts::BACKGROUNDCOLUMN, Qt::Horizontal, Qt::DisplayRole).toString();
+        QIcon icon = model()->headerData(Model::Layouts::BACKGROUNDCOLUMN, Qt::Horizontal, Qt::DecorationRole).value<QIcon>();
+
+        if (text.isEmpty() && !icon.isNull()) {
+            //! draw centered icon
+            QHeaderView::paintSection(painter, rect, Model::Layouts::HIDDENTEXTCOLUMN);
+
+            int margin = 4;
+            int thick = rect.height() - 2*margin;
+            int iX = rect.x() + (rect.width()/2) - (thick/2);
+
+            painter->drawPixmap(QRect(iX, rect.y() + margin, thick, thick), icon.pixmap(thick, thick, QIcon::Normal));
+            return;
+        }
+    }
+
+    QHeaderView::paintSection(painter, rect, logicalIndex);
+}
+
+}
+}
+}
+

app/settings/delegates/layoutsheaderview.h

@@ -0,0 +1,41 @@
+/*
+*  Copyright 2020 Michail Vourlakos <mvourlakos@gmail.com>
+*
+*  This file is part of Latte-Dock
+*
+*  Latte-Dock is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License as
+*  published by the Free Software Foundation; either version 2 of
+*  the License, or (at your option) any later version.
+*
+*  Latte-Dock is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License
+*  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef LAYOUTSHEADERVIEW_H
+#define LAYOUTSHEADERVIEW_H
+
+// Qt
+#include <QHeaderView>
+
+namespace Latte {
+namespace Settings {
+namespace Layouts {
+
+class HeaderView : public QHeaderView
+{
+public:
+    HeaderView(Qt::Orientation orientation, QWidget *parent = nullptr);
+
+    void paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const override;
+};
+
+}
+}
+}
+#endif

app/settings/models/layoutsmodel.cpp

@@ -225,17 +225,15 @@ QVariant Layouts::headerData(int section, Qt::Orientation orientation, int role)
         break;
     case HIDDENTEXTCOLUMN:
         if (role == Qt::DisplayRole) {
-            return QString("#hidden_text");
+            return QString("");
         }
         break;
     case BACKGROUNDCOLUMN:
         if (role == Qt::DisplayRole) {
-            return QIcon::fromTheme("games-config-background");//(i18nc("column for layout background", "Background"));
+            return QString("");
         } else if (role == Qt::DecorationRole) {
-            return QString("");//QIcon::fromTheme("games-config-background");//QString();//QIcon::fromTheme("games-config-background");
-        }/* else if (role == Qt::TextAlignmentRole ){
-            return QVariant::fromValue(Qt::AlignHCenter | Qt::AlignVCenter);
-        }*/
+            return QIcon::fromTheme("games-config-background");
+        }
         break;
     case NAMECOLUMN:
         if (role == Qt::DisplayRole) {