feat: Add a code view with button for TreeSitter

The button will display the treeSitter inspector dialog.

Related-to #62

src/gui/CMakeLists.txt

@@ -14,6 +14,8 @@ set(PROJECT_SOURCES
     apiexecutorwidget.h
     apiexecutorwidget.cpp
     apiexecutorwidget.ui
+    codeview.cpp
+    codeview.h
     documentpalette.h
     documentpalette.cpp
     fileselector.h

src/gui/codeview.cpp

@@ -0,0 +1,25 @@
+/*
+  This file is part of Knut.
+
+  SPDX-FileCopyrightText: 2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+
+  SPDX-License-Identifier: GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#include "codeview.h"
+#include "guisettings.h"
+
+namespace Gui {
+
+CodeView::CodeView(QWidget *parent)
+    : TextView(parent)
+{
+    auto *action = new QAction(tr("Show TreeSitter Explorer"));
+    GuiSettings::setIcon(action, ":/gui/file-tree.png");
+    connect(action, &QAction::triggered, this, &CodeView::treeSitterExplorerRequested);
+    addAction(action);
+}
+
+} // namespace Gui

src/gui/codeview.h

@@ -0,0 +1,29 @@
+/*
+  This file is part of Knut.
+
+  SPDX-FileCopyrightText: 2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+
+  SPDX-License-Identifier: GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#pragma once
+
+#include "textview.h"
+#include "treesitter/parser.h"
+
+namespace Gui {
+
+class CodeView : public TextView
+{
+    Q_OBJECT
+
+public:
+    explicit CodeView(QWidget *parent = nullptr);
+
+signals:
+    void treeSitterExplorerRequested();
+};
+
+} // namespace Gui

src/gui/gui.qrc

@@ -24,6 +24,7 @@
         <file>gui/magnify-minus.png</file>
         <file>gui/magnify-plus.png</file>
         <file>gui/lightbulb.png</file>
+        <file>gui/file-tree.png</file>
     </qresource>
     <qresource prefix="/org.kde.syntax-highlighting/syntax-addons">
         <file alias="rc.xml">gui/rc.xml</file>

src/gui/knutstyle.cpp

@@ -82,6 +82,8 @@ int KnutStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const
         return 1;
     case PM_TabBarTabVSpace:
         return 10;
+    case PM_SplitterWidth:
+        return 1;
     default:
         break;
     }

src/gui/mainwindow.cpp

@@ -9,6 +9,7 @@
 */
 
 #include "mainwindow.h"
+#include "codeview.h"
 #include "core/codedocument.h"
 #include "core/cppdocument.h"
 #include "core/document.h"
@@ -325,6 +326,8 @@ void MainWindow::inspectTreeSitter()
         m_treeSitterInspector = new TreeSitterInspector(this);
     }
     m_treeSitterInspector->show();
+    m_treeSitterInspector->raise();
+    m_treeSitterInspector->activateWindow();
 }
 
 MainWindow::~MainWindow() = default;
@@ -674,7 +677,7 @@ void MainWindow::changeTab()
     ui->actionSwitchHeaderSource->setEnabled(document->type() == Core::Document::Type::Cpp);
 }
 
-static QWidget *widgetForDocument(Core::Document *document)
+QWidget *MainWindow::widgetForDocument(Core::Document *document)
 {
     switch (document->type()) {
     case Core::Document::Type::Rc: {
@@ -717,8 +720,13 @@ static QWidget *widgetForDocument(Core::Document *document)
         tsView->setTsDocument(qobject_cast<Core::QtTsDocument *>(document));
         return tsView;
     }
+    case Core::Document::Type::Cpp: {
+        auto codeView = new CodeView();
+        codeView->setDocument(qobject_cast<Core::CodeDocument *>(document));
+        connect(codeView, &CodeView::treeSitterExplorerRequested, this, &MainWindow::inspectTreeSitter);
+        return codeView;
+    }
     case Core::Document::Type::Json:
-    case Core::Document::Type::Cpp:
     case Core::Document::Type::Text:
     default: {
         auto textView = new TextView();

src/gui/mainwindow.h

@@ -17,6 +17,10 @@ class QMenu;
 class QFileSystemModel;
 class QTreeView;
 
+namespace Core {
+class Document;
+}
+
 namespace Gui {
 
 class Palette;
@@ -100,6 +104,7 @@ class MainWindow : public QMainWindow
     void openDocument(const QModelIndex &index);
     void updateRecentProjects();
     void changeTab();
+    QWidget *widgetForDocument(Core::Document *document);
     void changeCurrentDocument();
     QDockWidget *createDock(QWidget *widget, Qt::DockWidgetArea area, QWidget *toolbar = nullptr);
     void reloadDocuments();