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LibGUI: Add (optional) row headers to GUI::TableView

Browse source 
You can now get row headers in your TableView by simply calling:

    table_view.row_header().set_visible(true)

Note that rows are not yet resizable.
This commit is contained in:
Andreas Kling 2020-08-26 15:54:03 +02:00
parent 49a5038a1a
commit 447b65bf7b
5 changed files with 92 additions and 18 deletions
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46
Libraries/LibGUI/AbstractTableView.cpp
View file

@ -42,6 +42,9 @@ AbstractTableView::AbstractTableView()
{
m_column_header = add<HeaderView>(*this, Gfx::Orientation::Horizontal);
m_column_header->move_to_back();
m_row_header = add<HeaderView>(*this, Gfx::Orientation::Vertical);
m_row_header->move_to_back();
m_row_header->set_visible(false);
set_should_hide_unnecessary_scrollbars(true);
}
@ -90,6 +93,21 @@ void AbstractTableView::update_column_sizes()
}
}
void AbstractTableView::update_row_sizes()
{
if (!model())
return;
auto& model = *this->model();
int row_count = model.row_count();
for (int row = 0; row < row_count; ++row) {
if (!column_header().is_section_visible(row))
continue;
row_header().set_section_size(row, item_height());
}
}
void AbstractTableView::update_content_size()
{
if (!model())
@ -105,8 +123,8 @@ void AbstractTableView::update_content_size()
int content_height = item_count() * item_height();
set_content_size({ content_width, content_height });
column_header().set_width(content_width);
set_size_occupied_by_fixed_elements({ 0, m_column_header->height() });
set_size_occupied_by_fixed_elements({ row_header().width(), column_header().height() });
layout_headers();
}
TableCellPaintingDelegate* AbstractTableView::column_painting_delegate(int column) const
@ -278,7 +296,7 @@ Gfx::IntRect AbstractTableView::content_rect(const ModelIndex& index) const
Gfx::IntRect AbstractTableView::row_rect(int item_index) const
{
return { 0, m_column_header->height() + (item_index * item_height()), max(content_size().width(), width()), item_height() };
return { row_header().is_visible() ? row_header().width() : 0 , column_header().height() + (item_index * item_height()), max(content_size().width(), width()), item_height() };
}
Gfx::IntPoint AbstractTableView::adjusted_position(const Gfx::IntPoint& position) const
@ -289,6 +307,7 @@ Gfx::IntPoint AbstractTableView::adjusted_position(const Gfx::IntPoint& position
void AbstractTableView::did_update_model(unsigned flags)
{
AbstractView::did_update_model(flags);
update_row_sizes();
update_column_sizes();
update_content_size();
update();
@ -297,9 +316,7 @@ void AbstractTableView::did_update_model(unsigned flags)
void AbstractTableView::resize_event(ResizeEvent& event)
{
AbstractView::resize_event(event);
if (column_header().is_visible())
column_header().set_relative_rect(frame_thickness(), frame_thickness(), content_width(), column_header().preferred_size().height());
layout_headers();
}
void AbstractTableView::header_did_change_section_size(Badge<HeaderView>, Gfx::Orientation, int, int)
@ -327,7 +344,22 @@ void AbstractTableView::set_column_headers_visible(bool visible)
void AbstractTableView::did_scroll()
{
AbstractView::did_scroll();
column_header().set_x(frame_thickness() + -horizontal_scrollbar().value());
layout_headers();
}
void AbstractTableView::layout_headers()
{
if (column_header().is_visible()) {
int x = frame_thickness() + (row_header().is_visible() ? row_header().width() : 0) + -horizontal_scrollbar().value();
int y = frame_thickness();
column_header().set_relative_rect(x, y, content_width(), column_header().preferred_size().height());
}
if (row_header().is_visible()) {
int x = frame_thickness();
int y = (frame_thickness() + (column_header().is_visible() ? column_header().height() : 0)) + -vertical_scrollbar().value();
row_header().set_relative_rect(x, y, row_header().preferred_size().width(), content_height());
}
}
}