HackStudio: Draw a brownish frame around the current editor widget

Also make the editor filename label bold only for the current editor.

DevTools/HackStudio/Editor.cpp

@@ -1,9 +1,44 @@
 #include "Editor.h"
 #include "EditorWrapper.h"
+#include <LibGUI/GPainter.h>
+#include <LibGUI/GScrollBar.h>
+
+EditorWrapper& Editor::wrapper()
+{
+    return static_cast<EditorWrapper&>(*parent());
+}
+const EditorWrapper& Editor::wrapper() const
+{
+    return static_cast<const EditorWrapper&>(*parent());
+}
 
 void Editor::focusin_event(CEvent& event)
 {
+    wrapper().set_editor_has_focus({}, true);
     if (on_focus)
         on_focus();
     GTextEditor::focusin_event(event);
 }
+
+void Editor::focusout_event(CEvent & event)
+{
+    wrapper().set_editor_has_focus({}, false);
+    GTextEditor::focusout_event(event);
+}
+
+void Editor::paint_event(GPaintEvent& event)
+{
+    GTextEditor::paint_event(event);
+
+    if (is_focused()) {
+        GPainter painter(*this);
+        painter.add_clip_rect(event.rect());
+
+        auto rect = frame_inner_rect();
+        if (vertical_scrollbar().is_visible())
+            rect.set_width(rect.width() - vertical_scrollbar().width());
+        if (horizontal_scrollbar().is_visible())
+            rect.set_height(rect.height() - horizontal_scrollbar().height());
+        painter.draw_rect(rect, Color::from_rgb(0x955233));
+    }
+}

DevTools/HackStudio/Editor.h

@@ -2,6 +2,8 @@
 
 #include <LibGUI/GTextEditor.h>
 
+class EditorWrapper;
+
 class Editor final : public GTextEditor {
     C_OBJECT(Editor)
 public:
@@ -9,8 +11,13 @@ public:
 
     Function<void()> on_focus;
 
+    EditorWrapper& wrapper();
+    const EditorWrapper& wrapper() const;
+
 private:
-    virtual void focusin_event(CEvent& event) override;
+    virtual void focusin_event(CEvent&) override;
+    virtual void focusout_event(CEvent&) override;
+    virtual void paint_event(GPaintEvent&) override;
 
     Editor(GWidget* parent)
         : GTextEditor(GTextEditor::MultiLine, parent)

DevTools/HackStudio/EditorWrapper.cpp

@@ -20,7 +20,6 @@ EditorWrapper::EditorWrapper(GWidget* parent)
     label_wrapper->layout()->set_margins({ 2, 0, 2, 0 });
 
     m_filename_label = GLabel::construct("(Untitled)", label_wrapper);
-    m_filename_label->set_font(Font::default_bold_font());
     m_filename_label->set_text_alignment(TextAlignment::CenterLeft);
     m_filename_label->set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
     m_filename_label->set_preferred_size(0, 14);
@@ -61,3 +60,8 @@ EditorWrapper::EditorWrapper(GWidget* parent)
 EditorWrapper::~EditorWrapper()
 {
 }
+
+void EditorWrapper::set_editor_has_focus(Badge<Editor>, bool focus)
+{
+    m_filename_label->set_font(focus ? Font::default_bold_font() : Font::default_font());
+}

DevTools/HackStudio/EditorWrapper.h

@@ -15,6 +15,8 @@ public:
 
     GLabel& filename_label() { return *m_filename_label; }
 
+    void set_editor_has_focus(Badge<Editor>, bool);
+
 private:
     explicit EditorWrapper(GWidget* parent = nullptr);