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LibGUI: Allow falling back to default paint behavior in delegate

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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
Notes: sideshowbarker 2024-07-17 20:03:26 +09:00
3 changed files with 6 additions and 2 deletions
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2
Userland/Libraries/LibGUI/AbstractTableView.h
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@ -1,5 +1,6 @@
/* /*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org> * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Jakob-Niklas See <git@nwex.de>
* *
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
@ -14,6 +15,7 @@ class TableCellPaintingDelegate {
public: public:
virtual ~TableCellPaintingDelegate() { } virtual ~TableCellPaintingDelegate() { }
virtual bool should_paint(ModelIndex const&) { return true; }
virtual void paint(Painter&, const Gfx::IntRect&, const Gfx::Palette&, const ModelIndex&) = 0; virtual void paint(Painter&, const Gfx::IntRect&, const Gfx::Palette&, const ModelIndex&) = 0;
}; };

3
Userland/Libraries/LibGUI/TableView.cpp
View file

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

3
Userland/Libraries/LibGUI/TreeView.cpp
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()); 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()); 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); delegate->paint(painter, cell_rect, palette(), cell_index);
} else { } else {
auto data = cell_index.data(); auto data = cell_index.data();