diff --git a/src/display_buffer.hh b/src/display_buffer.hh index 27fa9a089..379588809 100644 --- a/src/display_buffer.hh +++ b/src/display_buffer.hh @@ -122,11 +122,11 @@ struct DisplayAtom }; using BufferRange = std::pair; +using AtomList = std::vector; class DisplayLine { public: - using AtomList = std::vector; using iterator = AtomList::iterator; using const_iterator = AtomList::const_iterator; diff --git a/src/window.cc b/src/window.cc index b23b7deba..1ab429828 100644 --- a/src/window.cc +++ b/src/window.cc @@ -69,8 +69,7 @@ void Window::update_display_buffer() LineCount buffer_line = m_position.line + line; if (buffer_line >= buffer().line_count()) break; - lines.emplace_back(); - lines.back().push_back(DisplayAtom(AtomContent(buffer(), buffer_line, buffer_line+1))); + lines.emplace_back(AtomList{ {AtomContent(buffer(), buffer_line, buffer_line+1)} }); } m_display_buffer.compute_range(); @@ -108,6 +107,31 @@ static LineCount adapt_view_pos(LineCount line, LineCount offset, return view_pos; } +static CharCount adapt_view_pos(const DisplayLine& line, BufferCoord pos, CharCount view_pos, CharCount view_size) +{ + CharCount buffer_column = 0; + CharCount non_buffer_column = 0; + for (auto& atom : line) + { + if (atom.content.has_buffer_range()) + { + if (atom.content.begin() <= pos and atom.content.end() > pos) + { + if (buffer_column < view_pos) + return buffer_column; + + auto last_column = buffer_column + atom.content.length(); + if (last_column >= view_pos + view_size - non_buffer_column) + return last_column - view_size + non_buffer_column; + } + buffer_column += atom.content.length(); + } + else + non_buffer_column += atom.content.length(); + } + return view_pos; +} + void Window::scroll_to_keep_cursor_visible_ifn() { const auto& first = main_selection().first(); @@ -125,9 +149,7 @@ void Window::scroll_to_keep_cursor_visible_ifn() // highlight only the line containing the cursor DisplayBuffer display_buffer; DisplayBuffer::LineList& lines = display_buffer.lines(); - lines.emplace_back(); - - lines.back().push_back(DisplayAtom(AtomContent(buffer(), last.line, last.line+1))); + lines.emplace_back(AtomList{ AtomContent(buffer(), last.line, last.line+1) }); display_buffer.compute_range(); m_highlighters(*this, display_buffer); @@ -137,34 +159,11 @@ void Window::scroll_to_keep_cursor_visible_ifn() // (this is only valid if highlighting one line and multiple lines put // the cursor in the same position, however I do not find any sane example // of highlighters not doing that) - auto cursor = buffer().iterator_at(last); - CharCount buffer_column = 0; - CharCount non_buffer_column = 0; - for (auto& atom : lines.back()) - { - if (atom.content.has_buffer_range()) - { - if (atom.content.begin() <= last and atom.content.end() > last) - { - if (buffer_column < m_position.column) - m_position.column = buffer_column; - - auto last_column = buffer_column + atom.content.length(); - if (last_column >= m_position.column + m_dimensions.column - non_buffer_column) - m_position.column = last_column - m_dimensions.column + non_buffer_column; - - return; - } - buffer_column += atom.content.length(); - } - else - non_buffer_column += atom.content.length(); - } - if (not buffer().is_end(last)) - { - // the cursor should always be visible. - kak_assert(false); - } + m_position.column = adapt_view_pos(lines.back(), + first.line == last.line ? first : last.line, + m_position.column, m_dimensions.column); + m_position.column = adapt_view_pos(lines.back(), last, + m_position.column, m_dimensions.column); } namespace @@ -228,12 +227,8 @@ BufferCoord Window::offset_coord(const BufferCoord& coord, LineCount offset) auto line = clamp(coord.line + offset, 0_line, buffer().line_count()-1); DisplayBuffer display_buffer; DisplayBuffer::LineList& lines = display_buffer.lines(); - { - lines.emplace_back(); - lines.back().push_back({AtomContent(buffer(), coord.line, coord.line+1)}); - lines.emplace_back(); - lines.back().push_back({AtomContent(buffer(), line, line+1)}); - } + lines.emplace_back(AtomList{ {AtomContent(buffer(), coord.line, coord.line+1)} }); + lines.emplace_back(AtomList{ {AtomContent(buffer(), line, line+1)} }); display_buffer.compute_range(); m_highlighters(*this, display_buffer); m_builtin_highlighters(*this, display_buffer);