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Code Issues Projects Releases Packages Wiki Activity Actions 9

LibGUI: Support GTableView navigation with Page Up and Page Down.

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Also base the vertical scrollbar's gutter range on the visible content rect,
making it very similar to a Page Up/Down. Maybe they should be exactly the
same, I don't know.
This commit is contained in:
Andreas Kling 2019-03-02 23:58:45 +01:00
parent c350cf7b95
commit 63cdc3d2d5
Notes: sideshowbarker 2024-07-19 15:34:00 +09:00
1 changed files with 22 additions and 1 deletions
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23
LibGUI/GTableView.cpp
View file

@ -11,7 +11,6 @@ GTableView::GTableView(GWidget* parent)
m_vertical_scrollbar = new GScrollBar(Orientation::Vertical, this);
m_vertical_scrollbar->set_step(4);
m_vertical_scrollbar->set_big_step(30);
m_vertical_scrollbar->on_change = [this] (int) {
update();
};
@ -55,6 +54,8 @@ void GTableView::update_scrollbar_ranges()
int available_width = width() - m_vertical_scrollbar->width();
int excess_width = max(0, content_width() - available_width);
m_horizontal_scrollbar->set_range(0, excess_width);
m_vertical_scrollbar->set_big_step(visible_content_rect().height() - item_height());
}
int GTableView::content_width() const
@ -196,6 +197,26 @@ void GTableView::keydown_event(GKeyEvent& event)
}
return;
}
if (event.key() == KeyCode::Key_PageUp) {
int items_per_page = visible_content_rect().height() / item_height();
GModelIndex new_index(max(0, model.selected_index().row() - items_per_page), model.selected_index().column());
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_PageDown) {
int items_per_page = visible_content_rect().height() / item_height();
GModelIndex new_index(min(model.row_count() - 1, model.selected_index().row() + items_per_page), model.selected_index().column());
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
return GWidget::keydown_event(event);
}