732 lines
20 KiB
C++
732 lines
20 KiB
C++
#include "ncurses.hh"
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#include "display_buffer.hh"
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#include "event_manager.hh"
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#include "register_manager.hh"
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#include "utf8_iterator.hh"
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#include <map>
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#define NCURSES_OPAQUE 0
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#define NCURSES_INTERNALS
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#include <ncursesw/ncurses.h>
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#include <signal.h>
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#include <termios.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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namespace Kakoune
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{
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using std::min;
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using std::max;
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struct NCursesWin : WINDOW {};
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static void set_attribute(int attribute, bool on)
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{
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if (on)
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attron(attribute);
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else
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attroff(attribute);
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}
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static bool operator<(Color lhs, Color rhs)
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{
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if (lhs.color == rhs.color and lhs.color == Colors::RGB)
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return lhs.r == rhs.r ? (lhs.g == rhs.g ? lhs.b < rhs.b
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: lhs.g < rhs.g)
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: lhs.r < rhs.r;
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return lhs.color < rhs.color;
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}
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template<typename T> T sq(T x) { return x * x; }
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static int nc_color(Color color)
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{
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static std::map<Color, int> colors = {
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{ Colors::Default, -1 },
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{ Colors::Black, COLOR_BLACK },
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{ Colors::Red, COLOR_RED },
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{ Colors::Green, COLOR_GREEN },
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{ Colors::Yellow, COLOR_YELLOW },
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{ Colors::Blue, COLOR_BLUE },
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{ Colors::Magenta, COLOR_MAGENTA },
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{ Colors::Cyan, COLOR_CYAN },
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{ Colors::White, COLOR_WHITE },
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};
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static int next_color = 8;
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auto it = colors.find(color);
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if (it != colors.end())
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return it->second;
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else if (can_change_color() and COLORS > 8)
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{
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kak_assert(color.color == Colors::RGB);
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if (next_color > COLORS)
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next_color = 8;
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init_color(next_color,
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color.r * 1000 / 255,
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color.g * 1000 / 255,
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color.b * 1000 / 255);
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colors[color] = next_color;
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return next_color++;
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}
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else
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{
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kak_assert(color.color == Colors::RGB);
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// project to closest color.
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struct BuiltinColor { int id; unsigned char r, g, b; };
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static constexpr BuiltinColor builtins[] = {
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{ COLOR_BLACK, 0, 0, 0 },
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{ COLOR_RED, 255, 0, 0 },
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{ COLOR_GREEN, 0, 255, 0 },
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{ COLOR_YELLOW, 255, 255, 0 },
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{ COLOR_BLUE, 0, 0, 255 },
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{ COLOR_MAGENTA, 255, 0, 255 },
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{ COLOR_CYAN, 0, 255, 255 },
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{ COLOR_WHITE, 255, 255, 255 }
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};
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int lowestDist = INT_MAX;
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int closestCol = -1;
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for (auto& col : builtins)
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{
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int dist = sq(color.r - col.r)
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+ sq(color.g - col.g)
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+ sq(color.b - col.b);
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if (dist < lowestDist)
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{
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lowestDist = dist;
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closestCol = col.id;
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}
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}
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return closestCol;
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}
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}
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static int get_color_pair(ColorPair colors)
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{
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static std::map<ColorPair, int> colorpairs;
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static int next_pair = 1;
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auto it = colorpairs.find(colors);
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if (it != colorpairs.end())
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return it->second;
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else
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{
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init_pair(next_pair, nc_color(colors.first), nc_color(colors.second));
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colorpairs[colors] = next_pair;
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return next_pair++;
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}
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}
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static void set_color(WINDOW* window, ColorPair colors)
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{
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static int current_pair = -1;
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if (current_pair != -1)
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wattroff(window, COLOR_PAIR(current_pair));
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if (colors.first != Colors::Default or colors.second != Colors::Default)
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{
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current_pair = get_color_pair(colors);
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wattron(window, COLOR_PAIR(current_pair));
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}
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}
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void on_term_resize(int)
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{
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ungetch(KEY_RESIZE);
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EventManager::instance().force_signal(0);
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}
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void on_sigint(int)
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{
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ungetch(CTRL('c'));
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EventManager::instance().force_signal(0);
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}
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NCursesUI::NCursesUI()
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: m_stdin_watcher{0, [this](FDWatcher&){ if (m_input_callback)
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m_input_callback(); }}
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{
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initscr();
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cbreak();
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noecho();
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nonl();
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intrflush(stdscr, false);
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keypad(stdscr, true);
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curs_set(0);
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start_color();
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use_default_colors();
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set_escdelay(25);
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signal(SIGWINCH, on_term_resize);
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signal(SIGINT, on_sigint);
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update_dimensions();
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}
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NCursesUI::~NCursesUI()
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{
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endwin();
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signal(SIGWINCH, SIG_DFL);
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signal(SIGINT, SIG_DFL);
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}
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void NCursesUI::redraw()
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{
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wnoutrefresh(stdscr);
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if (m_menu_win)
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{
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redrawwin(m_menu_win);
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wnoutrefresh(m_menu_win);
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}
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if (m_info_win)
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{
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redrawwin(m_info_win);
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wnoutrefresh(m_info_win);
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}
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doupdate();
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}
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using Utf8Policy = utf8::InvalidBytePolicy::Pass;
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using Utf8Iterator = utf8::utf8_iterator<String::const_iterator, Utf8Policy>;
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void addutf8str(WINDOW* win, Utf8Iterator begin, Utf8Iterator end)
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{
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waddstr(win, std::string(begin.base(), end.base()).c_str());
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}
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static DisplayCoord window_size(WINDOW* win)
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{
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DisplayCoord size;
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getmaxyx(win, (int&)size.line, (int&)size.column);
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return size;
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}
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static DisplayCoord window_pos(WINDOW* win)
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{
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DisplayCoord pos;
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getbegyx(win, (int&)pos.line, (int&)pos.column);
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return pos;
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}
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void NCursesUI::update_dimensions()
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{
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m_dimensions = window_size(stdscr);
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--m_dimensions.line;
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}
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void NCursesUI::draw_line(const DisplayLine& line, CharCount col_index) const
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{
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for (const DisplayAtom& atom : line)
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{
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set_attribute(A_UNDERLINE, atom.attribute & Underline);
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set_attribute(A_REVERSE, atom.attribute & Reverse);
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set_attribute(A_BLINK, atom.attribute & Blink);
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set_attribute(A_BOLD, atom.attribute & Bold);
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set_color(stdscr, atom.colors);
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String content = atom.content();
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if (content[content.length()-1] == '\n' and
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content.char_length() - 1 < m_dimensions.column - col_index)
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{
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addutf8str(stdscr, Utf8Iterator{content.begin()},
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Utf8Iterator{content.end()}-1);
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addch(' ');
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}
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else
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{
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Utf8Iterator begin{content.begin()}, end{content.end()};
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if (end - begin > m_dimensions.column - col_index)
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end = begin + (m_dimensions.column - col_index);
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addutf8str(stdscr, begin, end);
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col_index += end - begin;
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}
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}
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}
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void NCursesUI::draw(const DisplayBuffer& display_buffer,
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const DisplayLine& status_line,
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const DisplayLine& mode_line)
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{
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LineCount line_index = 0;
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for (const DisplayLine& line : display_buffer.lines())
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{
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wmove(stdscr, (int)line_index, 0);
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wclrtoeol(stdscr);
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draw_line(line, 0);
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++line_index;
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}
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set_attribute(A_UNDERLINE, 0);
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set_attribute(A_REVERSE, 0);
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set_attribute(A_BLINK, 0);
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set_attribute(A_BOLD, 0);
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set_color(stdscr, { Colors::Blue, Colors::Default });
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for (;line_index < m_dimensions.line; ++line_index)
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{
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move((int)line_index, 0);
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clrtoeol();
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addch('~');
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}
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move((int)m_dimensions.line, 0);
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clrtoeol();
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draw_line(status_line, 0);
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CharCount status_len = mode_line.length();
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// only draw mode_line if it does not overlap one status line
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if (m_dimensions.column - status_line.length() > status_len + 1)
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{
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CharCount col = m_dimensions.column - status_len;
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move((int)m_dimensions.line, (int)col);
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draw_line(mode_line, col);
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}
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const char* tsl = tigetstr((char*)"tsl");
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const char* fsl = tigetstr((char*)"fsl");
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if (tsl != 0 and (ptrdiff_t)tsl != -1 and
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fsl != 0 and (ptrdiff_t)fsl != -1)
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{
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String title;
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for (auto& atom : mode_line)
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title += atom.content();
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title += " - Kakoune";
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printf("%s%s%s", tsl, title.c_str(), fsl);
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}
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redraw();
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}
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bool NCursesUI::is_key_available()
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{
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timeout(0);
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const int c = getch();
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if (c != ERR)
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ungetch(c);
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timeout(-1);
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return c != ERR;
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}
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Key NCursesUI::get_key()
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{
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const int c = getch();
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if (c > 0 and c < 27)
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{
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if (c == CTRL('l'))
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redrawwin(stdscr);
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return ctrl(Codepoint(c) - 1 + 'a');
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}
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else if (c == 27)
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{
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timeout(0);
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const Codepoint new_c = getch();
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timeout(-1);
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if (new_c != ERR)
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return alt(new_c);
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else
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return Key::Escape;
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}
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else if (c == KEY_RESIZE)
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{
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int fd = open("/dev/tty", O_RDWR);
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winsize ws;
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if (fd != -1 and ioctl(fd, TIOCGWINSZ, (void*)&ws) == 0)
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{
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close(fd);
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resizeterm(ws.ws_row, ws.ws_col);
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update_dimensions();
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}
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return Key::Invalid;
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}
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else switch (c)
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{
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case KEY_BACKSPACE: case 127: return Key::Backspace;
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case KEY_UP: return Key::Up;
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case KEY_DOWN: return Key::Down;
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case KEY_LEFT: return Key::Left;
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case KEY_RIGHT: return Key::Right;
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case KEY_PPAGE: return Key::PageUp;
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case KEY_NPAGE: return Key::PageDown;
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case KEY_HOME: return Key::Home;
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case KEY_END: return Key::End;
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case KEY_BTAB: return Key::BackTab;
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}
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for (int i = 0; i < 12; ++i)
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{
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if (c == KEY_F(i+1))
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return Key::F1 + i;
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}
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if (c >= 0 and c < 256)
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{
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ungetch(c);
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struct getch_iterator
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{
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int operator*() { return getch(); }
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getch_iterator& operator++() { return *this; }
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getch_iterator& operator++(int) { return *this; }
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};
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return utf8::codepoint(getch_iterator{});
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}
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return Key::Invalid;
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}
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template<typename T>
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T div_round_up(T a, T b)
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{
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return (a - T(1)) / b + T(1);
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}
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void NCursesUI::draw_menu()
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{
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// menu show may have not created the window if it did not fit.
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// so be tolerant.
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if (not m_menu_win)
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return;
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const auto menu_fg = get_color_pair(m_menu_fg);
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const auto menu_bg = get_color_pair(m_menu_bg);
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const auto scroll_fg = get_color_pair({ Colors::White, Colors::White });
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const auto scroll_bg = get_color_pair(m_menu_bg);
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wattron(m_menu_win, COLOR_PAIR(menu_bg));
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wbkgdset(m_menu_win, COLOR_PAIR(menu_bg));
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const int item_count = (int)m_items.size();
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const LineCount menu_lines = div_round_up(item_count, m_menu_columns);
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const DisplayCoord win_size = window_size(m_menu_win);
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const LineCount& win_height = win_size.line;
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kak_assert(win_height <= menu_lines);
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const CharCount column_width = (win_size.column - 1) / m_menu_columns;
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const LineCount mark_height = min(div_round_up(sq(win_height), menu_lines),
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win_height);
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const LineCount mark_line = (win_height - mark_height) * m_menu_top_line /
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max(1_line, menu_lines - win_height);
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for (auto line = 0_line; line < win_height; ++line)
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{
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wmove(m_menu_win, (int)line, 0);
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for (int col = 0; col < m_menu_columns; ++col)
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{
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const int item_idx = (int)(m_menu_top_line + line) * m_menu_columns
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+ col;
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if (item_idx >= item_count)
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break;
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if (item_idx == m_selected_item)
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wattron(m_menu_win, COLOR_PAIR(menu_fg));
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auto& item = m_items[item_idx];
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auto begin = item.cbegin();
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auto end = utf8::advance(begin, item.cend(), column_width);
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addutf8str(m_menu_win, begin, end);
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const CharCount pad = column_width - utf8::distance(begin, end);
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waddstr(m_menu_win, String{' ' COMMA pad}.c_str());
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wattron(m_menu_win, COLOR_PAIR(menu_bg));
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}
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const bool is_mark = line >= mark_line and
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line < mark_line + mark_height;
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wclrtoeol(m_menu_win);
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wmove(m_menu_win, (int)line, (int)win_size.column - 1);
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wattron(m_menu_win, COLOR_PAIR(is_mark ? scroll_fg : scroll_bg));
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waddch(m_menu_win, ' ');
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wattron(m_menu_win, COLOR_PAIR(menu_bg));
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}
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redraw();
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}
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void NCursesUI::menu_show(memoryview<String> items,
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DisplayCoord anchor, ColorPair fg, ColorPair bg,
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MenuStyle style)
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{
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kak_assert(m_menu_win == nullptr);
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kak_assert(m_items.empty());
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m_menu_fg = fg;
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m_menu_bg = bg;
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DisplayCoord maxsize = window_size(stdscr);
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maxsize.column -= anchor.column;
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if (maxsize.column <= 2)
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return;
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const int item_count = items.size();
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m_items.reserve(item_count);
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CharCount longest = 0;
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const CharCount maxlen = min((int)maxsize.column-2, 200);
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for (auto& item : items)
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{
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m_items.push_back(item.substr(0_char, maxlen));
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longest = max(longest, m_items.back().char_length());
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}
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longest += 1;
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const bool is_prompt = style == MenuStyle::Prompt;
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m_menu_columns = is_prompt ? (int)((maxsize.column - 1) / longest) : 1;
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int height = min(10, div_round_up(item_count, m_menu_columns));
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int line = (int)anchor.line + 1;
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if (line + height >= (int)maxsize.line)
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line = (int)anchor.line - height;
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m_selected_item = 0;
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m_menu_top_line = 0;
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int width = is_prompt ? (int)maxsize.column : (int)longest;
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m_menu_win = (NCursesWin*)newwin(height, width, line, (int)anchor.column);
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draw_menu();
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}
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void NCursesUI::menu_select(int selected)
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{
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const int item_count = m_items.size();
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const LineCount menu_lines = div_round_up(item_count, m_menu_columns);
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if (selected < 0 or selected >= item_count)
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{
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m_selected_item = -1;
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m_menu_top_line = 0;
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}
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else
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{
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m_selected_item = selected;
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const LineCount selected_line = m_selected_item / m_menu_columns;
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const LineCount win_height = window_size(m_menu_win).line;
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kak_assert(menu_lines >= win_height);
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if (selected_line < m_menu_top_line)
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m_menu_top_line = selected_line;
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if (selected_line >= m_menu_top_line + win_height)
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m_menu_top_line = min(selected_line, menu_lines - win_height);
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}
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draw_menu();
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}
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void NCursesUI::menu_hide()
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{
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if (not m_menu_win)
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return;
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m_items.clear();
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wredrawln(stdscr, (int)window_pos(m_menu_win).line,
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(int)window_size(m_menu_win).line);
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delwin(m_menu_win);
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m_menu_win = nullptr;
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redraw();
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}
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static DisplayCoord compute_needed_size(const String& str)
|
|
{
|
|
DisplayCoord res{1,0};
|
|
CharCount line_len = 0;
|
|
for (Utf8Iterator begin{str.begin()}, end{str.end()};
|
|
begin != end; ++begin)
|
|
{
|
|
if (*begin == '\n')
|
|
{
|
|
// ignore last '\n', no need to show an empty line
|
|
if (begin+1 == end)
|
|
break;
|
|
|
|
res.column = max(res.column, line_len);
|
|
line_len = 0;
|
|
++res.line;
|
|
}
|
|
else
|
|
{
|
|
++line_len;
|
|
res.column = max(res.column, line_len);
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static DisplayCoord compute_pos(DisplayCoord anchor,
|
|
DisplayCoord size,
|
|
WINDOW* opt_window_to_avoid = nullptr)
|
|
{
|
|
DisplayCoord scrsize = window_size(stdscr);
|
|
DisplayCoord pos = { anchor.line+1, anchor.column };
|
|
if (pos.line + size.line >= scrsize.line)
|
|
pos.line = max(0_line, anchor.line - size.line);
|
|
if (pos.column + size.column >= scrsize.column)
|
|
pos.column = max(0_char, anchor.column - size.column+1);
|
|
|
|
if (opt_window_to_avoid)
|
|
{
|
|
DisplayCoord winbeg = window_pos(opt_window_to_avoid);
|
|
DisplayCoord winend = winbeg + window_size(opt_window_to_avoid);
|
|
|
|
DisplayCoord end = pos + size;
|
|
|
|
// check intersection
|
|
if (not (end.line < winbeg.line or end.column < winbeg.column or
|
|
pos.line > winend.line or pos.column > winend.column))
|
|
{
|
|
pos.line = min(winbeg.line, anchor.line) - size.line;
|
|
// if above does not work, try below
|
|
if (pos.line < 0)
|
|
pos.line = max(winend.line, anchor.line);
|
|
}
|
|
}
|
|
|
|
return pos;
|
|
}
|
|
|
|
static std::vector<String> wrap_lines(const String& text, CharCount max_width)
|
|
{
|
|
enum CharCategory { Word, Blank, Eol };
|
|
static const auto categorize = [](Codepoint c) {
|
|
return is_blank(c) ? Blank
|
|
: is_eol(c) ? Eol : Word;
|
|
};
|
|
|
|
using Utf8It = utf8::utf8_iterator<String::const_iterator>;
|
|
Utf8It word_begin{text.begin()};
|
|
Utf8It word_end{word_begin};
|
|
Utf8It end{text.end()};
|
|
CharCount col = 0;
|
|
std::vector<String> lines;
|
|
String line;
|
|
while (word_begin != end)
|
|
{
|
|
CharCategory cat = categorize(*word_begin);
|
|
do
|
|
{
|
|
++word_end;
|
|
} while (word_end != end and categorize(*word_end) == cat);
|
|
|
|
col += word_end - word_begin;
|
|
if (col > max_width or *word_begin == '\n')
|
|
{
|
|
lines.push_back(std::move(line));
|
|
line = "";
|
|
col = 0;
|
|
}
|
|
if (*word_begin != '\n')
|
|
line += String{word_begin.base(), word_end.base()};
|
|
word_begin = word_end;
|
|
}
|
|
if (not line.empty())
|
|
lines.push_back(std::move(line));
|
|
return lines;
|
|
}
|
|
|
|
template<bool assist = true>
|
|
static String make_info_box(const String& title, const String& message,
|
|
CharCount max_width)
|
|
{
|
|
static const std::vector<String> assistant =
|
|
{ " ╭──╮ ",
|
|
" │ │ ",
|
|
" @ @ ╭",
|
|
" ││ ││ │",
|
|
" ││ ││ ╯",
|
|
" │╰─╯│ ",
|
|
" ╰───╯ ",
|
|
" " };
|
|
DisplayCoord assistant_size;
|
|
if (assist)
|
|
assistant_size = { (int)assistant.size(), assistant[0].char_length() };
|
|
|
|
const CharCount max_bubble_width = max_width - assistant_size.column - 6;
|
|
std::vector<String> lines = wrap_lines(message, max_bubble_width);
|
|
|
|
CharCount bubble_width = title.char_length() + 2;
|
|
for (auto& line : lines)
|
|
bubble_width = max(bubble_width, line.char_length());
|
|
|
|
String result;
|
|
auto line_count = max(assistant_size.line-1,
|
|
LineCount{(int)lines.size()} + 2);
|
|
for (LineCount i = 0; i < line_count; ++i)
|
|
{
|
|
constexpr Codepoint dash{L'─'};
|
|
if (assist)
|
|
result += assistant[min((int)i, (int)assistant_size.line-1)];
|
|
if (i == 0)
|
|
{
|
|
if (title.empty())
|
|
result += "╭─" + String{dash, bubble_width} + "─╮";
|
|
else
|
|
{
|
|
auto dash_count = bubble_width - title.char_length() - 2;
|
|
String left{dash, dash_count / 2};
|
|
String right{dash, dash_count - dash_count / 2};
|
|
result += "╭─" + left + "┤" + title +"├" + right +"─╮";
|
|
}
|
|
}
|
|
else if (i < lines.size() + 1)
|
|
{
|
|
auto& line = lines[(int)i - 1];
|
|
const CharCount padding = bubble_width - line.char_length();
|
|
result += "│ " + line + String{' ', padding} + " │";
|
|
}
|
|
else if (i == lines.size() + 1)
|
|
result += "╰─" + String(dash, bubble_width) + "─╯";
|
|
|
|
result += "\n";
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void NCursesUI::info_show(const String& title, const String& content,
|
|
DisplayCoord anchor, ColorPair colors,
|
|
MenuStyle style)
|
|
{
|
|
kak_assert(m_info_win == nullptr);
|
|
|
|
const String& info_box = style == MenuStyle::Inline ?
|
|
content : make_info_box(title, content, m_dimensions.column);
|
|
|
|
DisplayCoord size = compute_needed_size(info_box);
|
|
|
|
DisplayCoord pos = compute_pos(anchor, size, m_menu_win);
|
|
|
|
m_info_win = (NCursesWin*)newwin((int)size.line, (int)size.column,
|
|
(int)pos.line, (int)pos.column);
|
|
|
|
wbkgd(m_info_win, COLOR_PAIR(get_color_pair(colors)));
|
|
int line = 0;
|
|
auto it = info_box.begin(), end = info_box.end();
|
|
while (true)
|
|
{
|
|
wmove(m_info_win, line++, 0);
|
|
auto eol = std::find_if(it, end, [](char c) { return c == '\n'; });
|
|
addutf8str(m_info_win, Utf8Iterator(it), Utf8Iterator(eol));
|
|
if (eol == end)
|
|
break;
|
|
it = eol + 1;
|
|
}
|
|
redraw();
|
|
}
|
|
|
|
void NCursesUI::info_hide()
|
|
{
|
|
if (not m_info_win)
|
|
return;
|
|
wredrawln(stdscr, (int)window_pos(m_info_win).line,
|
|
(int)window_size(m_info_win).line);
|
|
delwin(m_info_win);
|
|
m_info_win = nullptr;
|
|
redraw();
|
|
}
|
|
|
|
DisplayCoord NCursesUI::dimensions()
|
|
{
|
|
return m_dimensions;
|
|
}
|
|
|
|
void NCursesUI::set_input_callback(InputCallback callback)
|
|
{
|
|
m_input_callback = std::move(callback);
|
|
}
|
|
|
|
void NCursesUI::abort()
|
|
{
|
|
endwin();
|
|
}
|
|
|
|
}
|