Initial implementation of #115.

resources/text/CHANGELOG

@@ -2,6 +2,7 @@
 —————
 
 Added:
+▪ Columns in message list can be hidden/shown/reordered with context menu. (issue #115)
 ▪ Auto-update notification is now switchable. (issue #119)
 ▪ Messages which are not removed or restored are not instantly deleted from list, they are striked-through instead. This is more resource friendly.
 ▪ Message list is now not reloaded when doing batch message operations.

rssguard.pro

@@ -331,7 +331,8 @@ HEADERS +=  src/core/feeddownloader.h \
             src/services/tt-rss/gui/formeditttrssaccount.h \
             src/gui/guiutilities.h \
             src/core/messagesmodelcache.h \
-            src/core/messagesmodelsqllayer.h
+            src/core/messagesmodelsqllayer.h \
+            src/gui/treeviewcolumnsmenu.h
 
 SOURCES +=  src/core/feeddownloader.cpp \
             src/core/feedsmodel.cpp \
@@ -454,7 +455,8 @@ SOURCES +=  src/core/feeddownloader.cpp \
             src/services/tt-rss/gui/formeditttrssaccount.cpp \
             src/gui/guiutilities.cpp \
             src/core/messagesmodelcache.cpp \
-            src/core/messagesmodelsqllayer.cpp
+            src/core/messagesmodelsqllayer.cpp \
+            src/gui/treeviewcolumnsmenu.cpp
 
 FORMS +=    src/gui/toolbareditor.ui \
             src/network-web/downloaditem.ui \

src/gui/messagesview.cpp

@@ -25,7 +25,7 @@
 #include "network-web/webfactory.h"
 #include "gui/dialogs/formmain.h"
 #include "gui/messagebox.h"
-
+#include "gui/treeviewcolumnsmenu.h"
 #include "gui/styleditemdelegatewithoutfocus.h"
 
 #include <QKeyEvent>
@@ -43,6 +43,12 @@ MessagesView::MessagesView(QWidget *parent)
   createConnections();
   setModel(m_proxyModel);
   setupAppearance();
+
+  header()->setContextMenuPolicy(Qt::CustomContextMenu);
+  connect(header(), &QHeaderView::customContextMenuRequested, [=](const QPoint &point) {
+    TreeViewColumnsMenu mm(header());
+    mm.exec(header()->mapToGlobal(point));
+  });
 }
 
 MessagesView::~MessagesView() {

src/gui/treeviewcolumnsmenu.cpp

@@ -0,0 +1,52 @@
+// This file is part of RSS Guard.
+//
+// Copyright (C) 2011-2017 by Martin Rotter <rotter.martinos@gmail.com>
+//
+// RSS Guard 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 3 of the License, or
+// (at your option) any later version.
+//
+// RSS Guard 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 RSS Guard. If not, see <http://www.gnu.org/licenses/>.
+
+#include "gui/treeviewcolumnsmenu.h"
+
+#include <QHeaderView>
+
+
+TreeViewColumnsMenu::TreeViewColumnsMenu(QHeaderView *parent) : QMenu(parent) {
+  connect(this, &TreeViewColumnsMenu::aboutToShow, this, &TreeViewColumnsMenu::prepareMenu);
+}
+
+TreeViewColumnsMenu::~TreeViewColumnsMenu() {
+}
+
+void TreeViewColumnsMenu::prepareMenu() {
+  QHeaderView *header_view = header();
+
+  for (int i = 0; i < header_view->count(); i++) {
+    QAction *act = addAction(header_view->model()->headerData(i, Qt::Horizontal, Qt::EditRole).toString());
+
+    act->setData(i);
+    act->setCheckable(true);
+    act->setChecked(!header_view->isSectionHidden(i));
+
+    connect(act, &QAction::toggled, this, &TreeViewColumnsMenu::actionTriggered);
+  }
+}
+
+void TreeViewColumnsMenu::actionTriggered(bool toggle) {
+  QAction *send_act = qobject_cast<QAction*>(sender());
+
+  header()->setSectionHidden(send_act->data().toInt(), !send_act->isChecked());
+}
+
+QHeaderView *TreeViewColumnsMenu::header() {
+  return qobject_cast<QHeaderView*>(parent());
+}

src/gui/treeviewcolumnsmenu.h

@@ -0,0 +1,39 @@
+// This file is part of RSS Guard.
+//
+// Copyright (C) 2011-2017 by Martin Rotter <rotter.martinos@gmail.com>
+//
+// RSS Guard 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 3 of the License, or
+// (at your option) any later version.
+//
+// RSS Guard 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 RSS Guard. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef TREEVIEWCOLUMNSMENU_H
+#define TREEVIEWCOLUMNSMENU_H
+
+#include <QMenu>
+
+
+class QHeaderView;
+
+class TreeViewColumnsMenu : public QMenu {
+  public:
+    explicit TreeViewColumnsMenu(QHeaderView *parent);
+    virtual ~TreeViewColumnsMenu();
+
+  private slots:
+    void prepareMenu();
+    void actionTriggered(bool toggle);
+
+  private:
+    QHeaderView *header();
+};
+
+#endif // TREEVIEWCOLUMNSMENU_H