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LibGUI: Add GListView::index_at_event_position()

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And port GListView::mousedown_event() to it.
This commit is contained in:
Sergey Bugaev 2020-01-22 18:07:23 +03:00 • committed by Andreas Kling
parent b4923938e1
commit 2ccad40a16
2 changed files with 20 additions and 9 deletions
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26
Libraries/LibGUI/GListView.cpp
View file

@ -84,7 +84,20 @@ Rect GListView::content_rect(const GModelIndex& index) const
return content_rect(index.row()); return content_rect(index.row());
} }
Point GListView::adjusted_position(const Point& position) GModelIndex GListView::index_at_event_position(const Point& point) const
{
ASSERT(model());
auto adjusted_position = this->adjusted_position(point);
for (int row = 0, row_count = model()->row_count(); row < row_count; ++row) {
if (!content_rect(row).contains(adjusted_position))
continue;
return model()->index(row, m_model_column);
}
return {};
}
Point GListView::adjusted_position(const Point& position) const
{ {
return position.translated(horizontal_scrollbar().value() - frame_thickness(), vertical_scrollbar().value() - frame_thickness()); return position.translated(horizontal_scrollbar().value() - frame_thickness(), vertical_scrollbar().value() - frame_thickness());
} }
@ -97,18 +110,15 @@ void GListView::mousedown_event(GMouseEvent& event)
if (event.button() != GMouseButton::Left) if (event.button() != GMouseButton::Left)
return; return;
auto adjusted_position = this->adjusted_position(event.position()); auto index = index_at_event_position(event.position());
for (int row = 0, row_count = model()->row_count(); row < row_count; ++row) { if (index.is_valid()) {
if (!content_rect(row).contains(adjusted_position))
continue;
auto index = model()->index(row, m_model_column);
if (event.modifiers() & Mod_Ctrl) if (event.modifiers() & Mod_Ctrl)
selection().toggle(index); selection().toggle(index);
else else
selection().set(index); selection().set(index);
return; } else {
selection().clear();
} }
selection().clear();
} }
void GListView::paint_event(GPaintEvent& event) void GListView::paint_event(GPaintEvent& event)

3
Libraries/LibGUI/GListView.h
View file

@ -49,8 +49,9 @@ public:
void scroll_into_view(const GModelIndex&, Orientation); void scroll_into_view(const GModelIndex&, Orientation);
Point adjusted_position(const Point&); Point adjusted_position(const Point&) const;
GModelIndex index_at_event_position(const Point&) const;
virtual Rect content_rect(const GModelIndex&) const override; virtual Rect content_rect(const GModelIndex&) const override;
int model_column() const { return m_model_column; } int model_column() const { return m_model_column; }