Migrate source text editor to its own class and add line numbers

Note that currently line numbers aren't really that visible, so going
forward some better styling has to be sorted (which will probably be
done when lexers are added to the SrcEditor class)

texedit/CMakeLists.txt

@@ -26,6 +26,7 @@ set(TARGET_NAME "${PROJECT_NAME}")
 set(DEPS_DIR "${CMAKE_CURRENT_LIST_DIR}/../deps/")
 
 set(SRCS
+    "gui/editor/src_editor_component.cpp"
     "gui/layout/panes/editor_pane.cpp"
     "gui/layout/panes/explorer_pane.cpp"
     "gui/layout/panes/output_pane.cpp"

texedit/gui/editor/src_editor_component.cpp

@@ -0,0 +1,23 @@
+/*
+ *   Copyright (c) 2024 Jack Bennett.
+ *   All Rights Reserved.
+ *
+ *   See the LICENCE file for more information.
+ */
+
+#include "src_editor_component.hpp"
+
+namespace te::gui::editor {
+    SrcEditor::SrcEditor(wxWindow *parent) : wxStyledTextCtrl(parent) {
+        // TODO: set colours depending on dark or light theme
+        // TODO: note that the theme might be system dependent, as on macOS, so properly managing themes with some sort of manager class would be best
+        SetMarginType(1, wxSTC_MARGIN_NUMBER);
+        SetMarginMask(1, 0);
+        SetMarginWidth(1, 20);
+
+        // TODO lexers for styling and syntax highlighting.
+    }
+
+    SrcEditor::~SrcEditor() {
+    }
+}

texedit/gui/editor/src_editor_component.hpp

@@ -0,0 +1,24 @@
+/*
+ *   Copyright (c) 2024 Jack Bennett.
+ *   All Rights Reserved.
+ *
+ *   See the LICENCE file for more information.
+ */
+
+#pragma once
+#ifndef __devinit__src_editor_component_hpp__
+#define __devinit__src_editor_component_hpp__
+
+#include <wx/stc/stc.h>
+
+namespace te::gui::editor {
+    class SrcEditor : public wxStyledTextCtrl {
+    public:
+        SrcEditor(wxWindow *parent);
+        ~SrcEditor();
+
+    private:
+    };
+}
+
+#endif

texedit/gui/layout/panes/editor_pane.cpp

@@ -6,13 +6,14 @@
  */
 
 #include "editor_pane.hpp"
+#include "gui/editor/src_editor_component.hpp"
 
 namespace te::gui {
     EditorPane::EditorPane(wxWindow *parent) : PaneBase{parent} {
-        _stc = new wxStyledTextCtrl(this, wxID_ANY);
+        _src_editor = new editor::SrcEditor(this);
 
         _sizer = new wxBoxSizer(wxVERTICAL);
-        _sizer->Add(_stc, 1, wxEXPAND);
+        _sizer->Add(_src_editor, 1, wxEXPAND);
         SetSizer(_sizer);
     }
 }

texedit/gui/layout/panes/editor_pane.hpp

@@ -12,6 +12,7 @@
 #include <wx/wx.h>
 #include <wx/stc/stc.h>
 #include "pane_base.hpp"
+#include "gui/editor/src_editor_component.hpp"
 
 namespace te::gui {
     class EditorPane : public PaneBase {
@@ -20,7 +21,8 @@ namespace te::gui {
 
     private:
         wxBoxSizer *_sizer;
-        wxStyledTextCtrl *_stc;
+
+        editor::SrcEditor *_src_editor;
     };
 }