138 lines
3.7 KiB
C++
138 lines
3.7 KiB
C++
#include "window.hh"
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#include "assert.hh"
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#include "highlighter_registry.hh"
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#include "hook_manager.hh"
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#include "context.hh"
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#include <algorithm>
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#include <sstream>
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namespace Kakoune
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{
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Window::Window(Buffer& buffer)
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: Editor(buffer),
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m_position(0, 0),
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m_dimensions(0, 0),
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m_option_manager(buffer.option_manager())
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{
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HighlighterRegistry& registry = HighlighterRegistry::instance();
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GlobalHookManager::instance().run_hook("WinCreate", buffer.name(),
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Context(*this));
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registry.add_highlighter_to_window(*this, "expand_tabs", HighlighterParameters());
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registry.add_highlighter_to_window(*this, "highlight_selections", HighlighterParameters());
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}
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BufferIterator Window::iterator_at(const DisplayCoord& window_pos) const
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{
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if (m_display_buffer.begin() == m_display_buffer.end())
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return buffer().begin();
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if (DisplayCoord(0,0) <= window_pos)
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{
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for (auto atom_it = m_display_buffer.begin();
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atom_it != m_display_buffer.end(); ++atom_it)
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{
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if (window_pos < atom_it->coord())
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{
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return (--atom_it)->iterator_at(window_pos);
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}
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}
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}
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return buffer().iterator_at(m_position + BufferCoord(window_pos));
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}
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DisplayCoord Window::line_and_column_at(const BufferIterator& iterator) const
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{
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if (m_display_buffer.begin() == m_display_buffer.end())
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return DisplayCoord(0, 0);
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if (iterator >= m_display_buffer.front().begin() and
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iterator < m_display_buffer.back().end())
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{
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for (auto& atom : m_display_buffer)
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{
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if (atom.end() > iterator)
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{
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assert(atom.begin() <= iterator);
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return atom.line_and_column_at(iterator);
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}
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}
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}
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BufferCoord coord = buffer().line_and_column_at(iterator);
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return DisplayCoord(coord.line - m_position.line,
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coord.column - m_position.column);
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}
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void Window::update_display_buffer()
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{
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scroll_to_keep_cursor_visible_ifn();
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m_display_buffer.clear();
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BufferIterator begin = buffer().iterator_at(m_position);
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BufferIterator end = buffer().iterator_at(m_position +
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BufferCoord(m_dimensions.line, m_dimensions.column))+2;
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if (begin == end)
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return;
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m_display_buffer.append(DisplayAtom(DisplayCoord(0,0), begin, end));
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m_highlighters(m_display_buffer);
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m_display_buffer.check_invariant();
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}
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void Window::set_dimensions(const DisplayCoord& dimensions)
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{
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m_dimensions = dimensions;
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}
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void Window::scroll_to_keep_cursor_visible_ifn()
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{
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DisplayCoord cursor = line_and_column_at(selections().back().last());
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if (cursor.line < 0)
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{
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m_position.line = std::max(m_position.line + cursor.line, 0);
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}
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else if (cursor.line >= m_dimensions.line)
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{
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m_position.line += cursor.line - (m_dimensions.line - 1);
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}
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if (cursor.column < 0)
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{
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m_position.column = std::max(m_position.column + cursor.column, 0);
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}
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else if (cursor.column >= m_dimensions.column)
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{
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m_position.column += cursor.column - (m_dimensions.column - 1);
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}
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}
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String Window::status_line() const
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{
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BufferCoord cursor = buffer().line_and_column_at(selections().back().last());
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std::ostringstream oss;
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oss << buffer().name();
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if (buffer().is_modified())
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oss << " [+]";
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oss << " -- " << cursor.line+1 << "," << cursor.column+1
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<< " -- " << selections().size() << " sel -- ";
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if (is_editing())
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oss << "[Insert]";
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return oss.str();
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}
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void Window::on_incremental_insertion_end()
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{
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push_selections();
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hook_manager().run_hook("InsertEnd", "", Context(*this));
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pop_selections();
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}
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}
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