341 lines
8.7 KiB
C++
341 lines
8.7 KiB
C++
#include "ncurses.hh"
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#include "window.hh"
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#include "register_manager.hh"
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#include <ncurses.h>
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#include <map>
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#define CTRL(x) x - 'a' + 1
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namespace Kakoune
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{
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namespace NCurses
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{
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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 int nc_color(Color color)
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{
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switch (color)
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{
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case Color::Black: return COLOR_BLACK;
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case Color::Red: return COLOR_RED;
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case Color::Green: return COLOR_GREEN;
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case Color::Yellow: return COLOR_YELLOW;
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case Color::Blue: return COLOR_BLUE;
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case Color::Magenta: return COLOR_MAGENTA;
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case Color::Cyan: return COLOR_CYAN;
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case Color::White: return COLOR_WHITE;
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case Color::Default:
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default:
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return -1;
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}
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}
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static void set_color(Color fg_color, Color bg_color)
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{
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static std::map<std::pair<Color, Color>, int> colorpairs;
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static int current_pair = -1;
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static int next_pair = 1;
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if (current_pair != -1)
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attroff(COLOR_PAIR(current_pair));
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if (fg_color == Color::Default and bg_color == Color::Default)
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return;
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std::pair<Color, Color> colorpair(fg_color, bg_color);
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auto it = colorpairs.find(colorpair);
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if (it != colorpairs.end())
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{
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current_pair = it->second;
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attron(COLOR_PAIR(it->second));
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}
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else
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{
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init_pair(next_pair, nc_color(fg_color), nc_color(bg_color));
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colorpairs[colorpair] = next_pair;
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current_pair = next_pair;
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attron(COLOR_PAIR(next_pair));
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++next_pair;
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}
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}
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void draw_window(Window& window)
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{
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int max_x,max_y;
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getmaxyx(stdscr, max_y, max_x);
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max_y -= 1;
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window.set_dimensions(DisplayCoord(max_y, max_x));
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window.update_display_buffer();
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DisplayCoord position;
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for (const DisplayAtom& atom : window.display_buffer())
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{
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assert(position == atom.coord());
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const String content = atom.content();
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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(atom.fg_color(), atom.bg_color());
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auto pos = content.begin();
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while (true)
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{
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move(position.line, position.column);
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clrtoeol();
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auto end = std::find(pos, content.end(), '\n');
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String line(pos, end);
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addstr(line.c_str());
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if (end != content.end())
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{
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addch(' ');
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position.line = position.line + 1;
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position.column = 0;
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pos = end + 1;
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if (position.line >= max_y)
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break;
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}
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else
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{
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position.column += line.length();
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break;
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}
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}
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if (position.line >= max_y)
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break;
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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(Color::Blue, Color::Black);
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while (++position.line < max_y)
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{
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move(position.line, 0);
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clrtoeol();
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addch('~');
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}
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set_color(Color::Cyan, Color::Black);
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String status_line = window.status_line();
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static int last_status_length = 0;
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move(max_y, max_x - last_status_length);
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clrtoeol();
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move(max_y, max_x - status_line.length());
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addstr(status_line.c_str());
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last_status_length = status_line.length();
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}
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static Key get_key()
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{
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char c = getch();
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Key::Modifiers modifiers = Key::Modifiers::None;
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if (c > 0 and c < 27)
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{
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modifiers = Key::Modifiers::Control;
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c = 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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char new_c = getch();
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timeout(-1);
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if (new_c != ERR)
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{
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c = new_c;
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modifiers = Key::Modifiers::Alt;
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}
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}
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return Key(modifiers, c);
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}
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static String prompt(const String& text, Completer completer)
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{
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curs_set(2);
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auto restore_cursor = on_scope_end([]() { curs_set(0); });
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int max_x, max_y;
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getmaxyx(stdscr, max_y, max_x);
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move(max_y-1, 0);
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addstr(text.c_str());
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clrtoeol();
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size_t cursor_pos = 0;
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Completions completions;
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int current_completion = -1;
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String text_before_completion;
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String result;
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String saved_result;
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static std::unordered_map<String, std::vector<String>> history_per_prompt;
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std::vector<String>& history = history_per_prompt[text];
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auto history_it = history.end();
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while (true)
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{
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int c = getch();
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switch (c)
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{
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case '\r':
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{
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std::vector<String>::iterator it;
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while ((it = find(history, result)) != history.end())
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history.erase(it);
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history.push_back(result);
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return result;
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}
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case KEY_UP:
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if (history_it != history.begin())
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{
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if (history_it == history.end())
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saved_result = result;
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--history_it;
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result = *history_it;
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cursor_pos = result.length();
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}
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break;
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case KEY_DOWN:
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if (history_it != history.end())
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{
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++history_it;
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if (history_it != history.end())
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result = *history_it;
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else
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result = saved_result;
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cursor_pos = result.length();
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}
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break;
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case KEY_LEFT:
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if (cursor_pos > 0)
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--cursor_pos;
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break;
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case KEY_RIGHT:
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if (cursor_pos < result.length())
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++cursor_pos;
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break;
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case KEY_BACKSPACE:
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if (cursor_pos != 0)
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{
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result = result.substr(0, cursor_pos - 1)
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+ result.substr(cursor_pos, String::npos);
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--cursor_pos;
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}
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current_completion = -1;
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break;
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case CTRL('r'):
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{
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c = getch();
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String reg = RegisterManager::instance()[c].get();
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current_completion = -1;
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result = result.substr(0, cursor_pos) + reg + result.substr(cursor_pos, String::npos);
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cursor_pos += reg.length();
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}
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break;
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case 27:
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throw prompt_aborted();
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case '\t':
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{
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if (current_completion == -1)
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{
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completions = completer(result, cursor_pos);
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if (completions.candidates.empty())
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break;
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text_before_completion = result.substr(completions.start,
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completions.end - completions.start);
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}
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++current_completion;
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String completion;
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if (current_completion >= completions.candidates.size())
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{
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if (current_completion == completions.candidates.size() and
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std::find(completions.candidates.begin(), completions.candidates.end(), text_before_completion) == completions.candidates.end())
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completion = text_before_completion;
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else
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{
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current_completion = 0;
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completion = completions.candidates[0];
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}
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}
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else
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completion = completions.candidates[current_completion];
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move(max_y-1, text.length());
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result = result.substr(0, completions.start) + completion;
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cursor_pos = completions.start + completion.length();
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break;
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}
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default:
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current_completion = -1;
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result = result.substr(0, cursor_pos) + (char)c + result.substr(cursor_pos, String::npos);
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++cursor_pos;
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}
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move(max_y - 1, text.length());
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clrtoeol();
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addstr(result.c_str());
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move(max_y - 1, text.length() + cursor_pos);
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refresh();
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}
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return result;
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}
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void print_status(const String& status)
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{
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int x,y;
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getmaxyx(stdscr, y, x);
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move(y-1, 0);
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clrtoeol();
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addstr(status.c_str());
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}
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void init(PromptFunc& prompt_func, GetKeyFunc& get_key_func)
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{
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// setlocale(LC_ALL, "");
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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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ESCDELAY=25;
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prompt_func = prompt;
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get_key_func = get_key;
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}
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void deinit()
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{
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endwin();
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}
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}
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}
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