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LibGUI: Add granular ColumnView helpers for column and index at events

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This patch extracts logic for getting colum at an event position and for
getting an index in a column at an event position from
index_at_event_position into separate functions.
This commit is contained in:
networkException 2022-09-04 16:48:35 +02:00 committed by Linus Groh
parent 707b4f83eb
commit f0a20fc902
Notes: sideshowbarker 2024-07-17 07:31:24 +09:00 
Author: https://github.com/networkException
Commit: https://github.com/SerenityOS/serenity/commit/f0a20fc902
Pull-request: https://github.com/SerenityOS/serenity/pull/15128
Reviewed-by: https://github.com/linusg
2 changed files with 30 additions and 9 deletions
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36
Userland/Libraries/LibGUI/ColumnsView.cpp
View file

@ -206,7 +206,7 @@ void ColumnsView::update_column_sizes()
set_content_size({ total_width, total_height });
}
ModelIndex ColumnsView::index_at_event_position(Gfx::IntPoint const& a_position) const
Optional<ColumnsView::Column> ColumnsView::column_at_event_position(Gfx::IntPoint const& a_position) const
{
if (!model())
return {};
@ -215,7 +215,7 @@ ModelIndex ColumnsView::index_at_event_position(Gfx::IntPoint const& a_position)
int column_x = 0;
for (auto& column : m_columns) {
for (auto const& column : m_columns) {
if (position.x() < column_x)
break;
if (position.x() > column_x + column.width) {
@ -223,12 +223,7 @@ ModelIndex ColumnsView::index_at_event_position(Gfx::IntPoint const& a_position)
continue;
}
int row = position.y() / item_height();
int row_count = model()->row_count(column.parent_index);
if (row >= row_count)
return {};
return model()->index(row, m_model_column, column.parent_index);
return column;
}
return {};
@ -248,6 +243,25 @@ void ColumnsView::select_range(ModelIndex const& index)
}
}
ModelIndex ColumnsView::index_at_event_position_in_column(Gfx::IntPoint const& position, Column const& column) const
{
int row = position.y() / item_height();
int row_count = model()->row_count(column.parent_index);
if (row >= row_count)
return {};
return model()->index(row, m_model_column, column.parent_index);
}
ModelIndex ColumnsView::index_at_event_position(Gfx::IntPoint const& position) const
{
auto const& column = column_at_event_position(position);
if (!column.has_value())
return {};
return index_at_event_position_in_column(position, *column);
}
void ColumnsView::mousedown_event(MouseEvent& event)
{
AbstractView::mousedown_event(event);
@ -258,7 +272,11 @@ void ColumnsView::mousedown_event(MouseEvent& event)
if (event.button() != MouseButton::Primary)
return;
auto index = index_at_event_position(event.position());
auto column = column_at_event_position(event.position());
if (!column.has_value())
return;
auto index = index_at_event_position_in_column(event.position(), *column);
if (index.is_valid() && !(event.modifiers() & Mod_Ctrl)) {
if (model()->row_count(index))
push_column(index);

3
Userland/Libraries/LibGUI/ColumnsView.h
View file

@ -48,6 +48,9 @@ private:
// TODO: per-column vertical scroll?
};
Optional<Column> column_at_event_position(Gfx::IntPoint const&) const;
ModelIndex index_at_event_position_in_column(Gfx::IntPoint const&, Column const&) const;
Vector<Column> m_columns;
int m_model_column { 0 };
};