Method GetDisplayedItemCount

src/SFGUI/ComboBox.cpp:454–474

}

ComboBox::IndexType ComboBox::GetDisplayedItemCount() const {
	float border_width( Context::Get().GetEngine().GetProperty<float>( "BorderWidth", shared_from_this() ) );
	float padding( Context::Get().GetEngine().GetProperty<float>( "ItemPadding", shared_from_this() ) );
	const std::string& font_name( Context::Get().GetEngine().GetProperty<std::string>( "FontName", shared_from_this() ) );
	unsigned int font_size( Context::Get().GetEngine().GetProperty<unsigned int>( "FontSize", shared_from_this() ) );
	const sf::Font& font( *Context::Get().GetEngine().GetResourceManager().GetFont( font_name ) );
	const float line_height( Context::Get().GetEngine().GetFontLineHeight( font, font_size ) );

	const sf::Vector2f item_size(
		GetAllocation().size.x - 2 * border_width,
		line_height + 2 * padding
	);

	auto available_space = static_cast<float>( Renderer::Get().GetWindowSize().y ) - ( GetAbsolutePosition().y + item_size.y );

	auto num_displayed_entries = static_cast<IndexType>( available_space / item_size.y );

	num_displayed_entries = ( GetItemCount() < num_displayed_entries ? GetItemCount() : num_displayed_entries );

	return num_displayed_entries;
}

ComboBox::IndexType ComboBox::GetDisplayedItemStart() const {
	return m_start_entry;