LibGUI: Make GScrollableWidget a GFrame and fix up GTextEditor for it.

LibGUI/GFrame.h

@@ -19,7 +19,8 @@ public:
     Shape frame_shape() const { return m_shape; }
     void set_frame_shape(Shape shape) { m_shape = shape; }
 
-    Rect frame_inner_rect() const { return rect().shrunken(m_thickness * 2, m_thickness * 2); }
+    Rect frame_inner_rect_for_size(const Size& size) const { return { m_thickness, m_thickness, size.width() - m_thickness * 2, size.height() - m_thickness * 2 }; }
+    Rect frame_inner_rect() const { return frame_inner_rect_for_size(size()); }
 
     virtual const char* class_name() const override { return "GFrame"; }
 

LibGUI/GScrollableWidget.cpp

@@ -2,7 +2,7 @@
 #include <LibGUI/GScrollBar.h>
 
 GScrollableWidget::GScrollableWidget(GWidget* parent)
-    : GWidget(parent)
+    : GFrame(parent)
 {
     m_vertical_scrollbar = new GScrollBar(Orientation::Vertical, this);
     m_vertical_scrollbar->set_step(4);
@@ -27,25 +27,26 @@ GScrollableWidget::~GScrollableWidget()
 
 void GScrollableWidget::resize_event(GResizeEvent& event)
 {
+    auto inner_rect = frame_inner_rect_for_size(event.size());
     update_scrollbar_ranges();
 
     int height_wanted_by_horizontal_scrollbar = m_horizontal_scrollbar->is_visible() ? m_horizontal_scrollbar->height() : 0;
     int width_wanted_by_vertical_scrollbar = m_vertical_scrollbar->is_visible() ? m_vertical_scrollbar->width() : 0;
 
-    m_vertical_scrollbar->set_relative_rect(event.size().width() - m_vertical_scrollbar->preferred_size().width(), 0, m_vertical_scrollbar->preferred_size().width(), event.size().height() - height_wanted_by_horizontal_scrollbar);
-    m_horizontal_scrollbar->set_relative_rect(0, event.size().height() - m_horizontal_scrollbar->preferred_size().height(), event.size().width() - m_vertical_scrollbar->preferred_size().width(), width_wanted_by_vertical_scrollbar);
+    m_vertical_scrollbar->set_relative_rect(inner_rect.right() + 1 - m_vertical_scrollbar->preferred_size().width(), inner_rect.top(), m_vertical_scrollbar->preferred_size().width(), inner_rect.height() - height_wanted_by_horizontal_scrollbar);
+    m_horizontal_scrollbar->set_relative_rect(inner_rect.left(), inner_rect.bottom() + 1 - m_horizontal_scrollbar->preferred_size().height(), inner_rect.width() - m_vertical_scrollbar->preferred_size().width(), width_wanted_by_vertical_scrollbar);
 
     m_corner_widget->set_visible(m_vertical_scrollbar->is_visible() && m_horizontal_scrollbar->is_visible());
     if (m_corner_widget->is_visible()) {
-        Rect corner_rect { m_horizontal_scrollbar->rect().right() + 1, m_vertical_scrollbar->rect().bottom() + 1, height_occupied_by_horizontal_scrollbar(), width_occupied_by_vertical_scrollbar() };
+        Rect corner_rect { m_horizontal_scrollbar->rect().right() + 2, m_vertical_scrollbar->rect().bottom() + 2, width_occupied_by_vertical_scrollbar(), height_occupied_by_horizontal_scrollbar() };
         m_corner_widget->set_relative_rect(corner_rect);
     }
 }
 
 Size GScrollableWidget::available_size() const
 {
-    int available_width = width() - m_size_occupied_by_fixed_elements.width() - width_occupied_by_vertical_scrollbar();
-    int available_height = height() - m_size_occupied_by_fixed_elements.height() - height_occupied_by_horizontal_scrollbar();
+    int available_width = frame_inner_rect().width() - m_size_occupied_by_fixed_elements.width() - width_occupied_by_vertical_scrollbar();
+    int available_height = frame_inner_rect().height() - m_size_occupied_by_fixed_elements.height() - height_occupied_by_horizontal_scrollbar();
     return { available_width, available_height };
 }
 
@@ -93,8 +94,8 @@ Rect GScrollableWidget::visible_content_rect() const
     return {
         m_horizontal_scrollbar->value(),
         m_vertical_scrollbar->value(),
-        width() - width_occupied_by_vertical_scrollbar() - m_size_occupied_by_fixed_elements.width(),
-        height() - height_occupied_by_horizontal_scrollbar() - m_size_occupied_by_fixed_elements.height()
+        frame_inner_rect().width() - width_occupied_by_vertical_scrollbar() - m_size_occupied_by_fixed_elements.width(),
+        frame_inner_rect().height() - height_occupied_by_horizontal_scrollbar() - m_size_occupied_by_fixed_elements.height()
     };
 }
 
@@ -144,3 +145,11 @@ void GScrollableWidget::scroll_to_bottom()
 {
     scroll_into_view({ 0, content_height(), 1, 1 }, Orientation::Vertical);
 }
+
+Rect GScrollableWidget::widget_inner_rect() const
+{
+    auto rect = frame_inner_rect();
+    rect.set_width(rect.width() - width_occupied_by_vertical_scrollbar());
+    rect.set_height(rect.height() - height_occupied_by_horizontal_scrollbar());
+    return rect;
+}

LibGUI/GScrollableWidget.h

@@ -1,10 +1,10 @@
 #pragma once
 
-#include <LibGUI/GWidget.h>
+#include <LibGUI/GFrame.h>
 
 class GScrollBar;
 
-class GScrollableWidget : public GWidget {
+class GScrollableWidget : public GFrame {
 public:
     virtual ~GScrollableWidget() override;
 
@@ -14,6 +14,8 @@ public:
 
     Rect visible_content_rect() const;
 
+    Rect widget_inner_rect() const;
+
     void scroll_into_view(const Rect&, Orientation);
     void scroll_into_view(const Rect&, bool scroll_horizontally, bool scroll_vertically);
 

LibGUI/GTextEditor.cpp

@@ -1,4 +1,4 @@
-#include <LibGUI/GTextEditor.h>
+ #include <LibGUI/GTextEditor.h>
 #include <LibGUI/GScrollBar.h>
 #include <LibGUI/GFontDatabase.h>
 #include <LibGUI/GClipboard.h>
@@ -13,6 +13,9 @@ GTextEditor::GTextEditor(Type type, GWidget* parent)
     : GScrollableWidget(parent)
     , m_type(type)
 {
+    set_frame_shape(GFrame::Shape::Panel);
+    set_frame_shadow(GFrame::Shadow::Sunken);
+    set_frame_thickness(1);
     set_scrollbars_enabled(is_multi_line());
     m_ruler_visible = is_multi_line();
     set_font(GFontDatabase::the().get_by_name("Csilla Thin"));
@@ -147,9 +150,10 @@ Rect GTextEditor::ruler_content_rect(int line_index) const
 
 void GTextEditor::paint_event(GPaintEvent& event)
 {
+    GFrame::paint_event(event);
+
     Painter painter(*this);
-    Rect item_area_rect { 0, 0, width() - width_occupied_by_vertical_scrollbar(), height() - height_occupied_by_horizontal_scrollbar() };
-    painter.set_clip_rect(item_area_rect);
+    painter.set_clip_rect(widget_inner_rect());
     painter.set_clip_rect(event.rect());
     painter.fill_rect(event.rect(), Color::White);
 
@@ -160,8 +164,6 @@ void GTextEditor::paint_event(GPaintEvent& event)
         painter.draw_line(ruler_rect.top_right(), ruler_rect.bottom_right(), Color::DarkGray);
     }
 
-    painter.save();
-
     painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
     if (m_ruler_visible)
         painter.translate(ruler_width(), 0);
@@ -210,13 +212,6 @@ void GTextEditor::paint_event(GPaintEvent& event)
 
     if (is_focused() && m_cursor_state)
         painter.fill_rect(cursor_content_rect(), Color::Red);
-
-    painter.restore();
-
-    if (is_focused())
-        painter.draw_rect(item_area_rect, Color::from_rgb(0x84351a));
-    else if (is_single_line())
-        painter.draw_rect(item_area_rect, Color::MidGray);
 }
 
 void GTextEditor::toggle_selection_if_needed_for_event(const GKeyEvent& event)