LibGUI: Allow falling back to default paint behavior in delegate

This patch adds a method that can optionally be implemented to allow
a TableCellPaintingDelegate to fall back to the default painting in a
View.
This commit is contained in:
networkException 2022-01-28 17:18:58 +01:00 committed by Andreas Kling
parent e2df145e14
commit b67d4ab52f
3 changed files with 6 additions and 2 deletions

View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Jakob-Niklas See <git@nwex.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -14,6 +15,7 @@ class TableCellPaintingDelegate {
public:
virtual ~TableCellPaintingDelegate() { }
virtual bool should_paint(ModelIndex const&) { return true; }
virtual void paint(Painter&, const Gfx::IntRect&, const Gfx::Palette&, const ModelIndex&) = 0;
};

View file

@ -98,7 +98,8 @@ void TableView::paint_event(PaintEvent& event)
painter.fill_rect(cell_rect_for_fill, key_column_background_color);
auto cell_index = model()->index(row_index, column_index);
if (auto* delegate = column_painting_delegate(column_index)) {
auto* delegate = column_painting_delegate(column_index);
if (delegate && delegate->should_paint(cell_index)) {
delegate->paint(painter, cell_rect, palette(), cell_index);
} else {
auto data = cell_index.data();

View file

@ -291,7 +291,8 @@ void TreeView::paint_event(PaintEvent& event)
Gfx::IntRect cell_rect(horizontal_padding() + x_offset, rect.y(), column_width, row_height());
auto cell_index = model.index(index.row(), column_index, index.parent());
if (auto* delegate = column_painting_delegate(column_index)) {
auto* delegate = column_painting_delegate(column_index);
if (delegate && delegate->should_paint(cell_index)) {
delegate->paint(painter, cell_rect, palette(), cell_index);
} else {
auto data = cell_index.data();