LibGUI: Make AbstractTableView and TableView more customisable

This patchset adds a few getters/setters to AbstractTableView to make
its looks more customisable:
- Header width & text alignment
- Default column width
- Ability to disable selected row highlighting

Libraries/LibGUI/AbstractTableView.cpp

@@ -165,7 +165,7 @@ void AbstractTableView::paint_headers(Painter& painter)
         auto text_rect = cell_rect.translated(horizontal_padding(), 0);
         if (pressed)
             text_rect.move_by(1, 1);
-        painter.draw_text(text_rect, text, header_font(), Gfx::TextAlignment::CenterLeft, palette().button_text());
+        painter.draw_text(text_rect, text, header_font(), column_header_alignment(column_index), palette().button_text());
         x_offset += column_width + horizontal_padding() * 2;
     }
 }
@@ -249,6 +249,23 @@ int AbstractTableView::column_width(int column_index) const
     return column_data(column_index).width;
 }
 
+void AbstractTableView::set_column_width(int column, int width)
+{
+    column_data(column).width = width;
+}
+
+Gfx::TextAlignment AbstractTableView::column_header_alignment(int column_index) const
+{
+    if (!model())
+        return Gfx::TextAlignment::CenterLeft;
+    return column_data(column_index).header_alignment;
+}
+
+void AbstractTableView::set_column_header_alignment(int column, Gfx::TextAlignment alignment)
+{
+    column_data(column).header_alignment = alignment;
+}
+
 void AbstractTableView::mousemove_event(MouseEvent& event)
 {
     if (!model())

Libraries/LibGUI/AbstractTableView.h

@@ -32,7 +32,7 @@ namespace GUI {
 
 class TableCellPaintingDelegate {
 public:
-    virtual ~TableCellPaintingDelegate() {}
+    virtual ~TableCellPaintingDelegate() { }
 
     virtual void paint(Painter&, const Gfx::IntRect&, const Gfx::Palette&, const ModelIndex&) = 0;
 };
@@ -43,6 +43,8 @@ public:
 
     bool alternating_row_colors() const { return m_alternating_row_colors; }
     void set_alternating_row_colors(bool b) { m_alternating_row_colors = b; }
+    bool highlight_selected_rows() const { return m_highlight_selected_rows; }
+    void set_highlight_selected_rows(bool b) { m_highlight_selected_rows = b; }
 
     int header_height() const { return m_headers_visible ? 16 : 0; }
 
@@ -52,6 +54,12 @@ public:
     bool is_column_hidden(int) const;
     void set_column_hidden(int, bool);
 
+    int column_width(int column) const;
+    void set_column_width(int column, int width);
+
+    Gfx::TextAlignment column_header_alignment(int column) const;
+    void set_column_header_alignment(int column, Gfx::TextAlignment);
+
     void set_cell_painting_delegate(int column, OwnPtr<TableCellPaintingDelegate>&&);
 
     int horizontal_padding() const { return m_horizontal_padding; }
@@ -83,7 +91,7 @@ protected:
     virtual void leave_event(Core::Event&) override;
     virtual void context_menu_event(ContextMenuEvent&) override;
 
-    virtual void toggle_index(const ModelIndex&) {}
+    virtual void toggle_index(const ModelIndex&) { }
 
     void paint_headers(Painter&);
     Gfx::IntRect header_rect(int column) const;
@@ -97,6 +105,7 @@ protected:
         bool has_initialized_width { false };
         bool visibility { true };
         RefPtr<Action> visibility_action;
+        Gfx::TextAlignment header_alignment { Gfx::TextAlignment::CenterLeft };
         OwnPtr<TableCellPaintingDelegate> cell_painting_delegate;
     };
     ColumnData& column_data(int column) const;
@@ -107,7 +116,6 @@ protected:
     RefPtr<Menu> m_header_context_menu;
 
     Gfx::IntRect column_resize_grabbable_rect(int) const;
-    int column_width(int) const;
     void update_content_size();
     virtual void update_column_sizes();
     virtual int item_count() const;
@@ -116,6 +124,7 @@ private:
     bool m_headers_visible { true };
     bool m_in_column_resize { false };
     bool m_alternating_row_colors { true };
+    bool m_highlight_selected_rows { true };
     int m_horizontal_padding { 5 };
     Gfx::IntPoint m_column_resize_origin;
     int m_column_resize_original_width { 0 };

Libraries/LibGUI/TableView.cpp

@@ -84,7 +84,7 @@ void TableView::paint_event(PaintEvent& event)
 
         Color background_color;
         Color key_column_background_color;
-        if (is_selected_row) {
+        if (is_selected_row && highlight_selected_rows()) {
             background_color = is_focused() ? palette().selection() : palette().inactive_selection();
             key_column_background_color = is_focused() ? palette().selection() : palette().inactive_selection();
         } else {