Method GetPositionFromMouseX

src/SFGUI/Entry.cpp:78–103

}

int Entry::GetPositionFromMouseX( int mouse_pos_x ) {
	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 ) );
	float text_padding( Context::Get().GetEngine().GetProperty<float>( "Padding", shared_from_this() ) );

	std::u32string string( m_visible_string.begin(), m_visible_string.end() );

	auto text_start = GetAllocation().position.x + text_padding;
	auto last_delta = std::fabs( text_start - static_cast<float>( mouse_pos_x ) );
	int cursor_position = 0;
	auto length = static_cast<int>( string.size() );

	for( cursor_position = 0; cursor_position < length; cursor_position++ ) {
		auto text_length = Context::Get().GetEngine().GetTextStringMetrics( string.substr( 0, static_cast<std::size_t>( cursor_position + 1 ) ), font, font_size ).x;
		auto new_delta = std::fabs( text_start + text_length - static_cast<float>( mouse_pos_x ) );
		if( new_delta < last_delta ) {
			last_delta = new_delta;
		}
		else {
			break;
		}
	}

	return m_visible_offset + cursor_position;
}


void Entry::RecalculateVisibleString() const {