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Diffstat (limited to 'event.cc')
| -rw-r--r-- | event.cc | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/event.cc b/event.cc new file mode 100644 index 0000000..bef0cfc --- /dev/null +++ b/event.cc @@ -0,0 +1,189 @@ +// Copyright (C) 2003 Mooffie <mooffie@typo.co.il> +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. + +#include <config.h> + +#include "event.h" +#include "my_wctob.h" +#include "dbg.h" + +static const char *ext_keyname(int keycode) +{ + switch (keycode) { + case KEY_DOWN: return "Down"; + case KEY_UP: return "Up"; + case KEY_LEFT: return "Left"; + case KEY_RIGHT: return "Right"; + case KEY_HOME: return "Home"; + case KEY_END: return "End"; + case KEY_BACKSPACE: return "BkSp"; + case KEY_DC: return "Del"; + case KEY_IC: return "Insert"; + case KEY_NPAGE: return "PgDn"; + case KEY_PPAGE: return "PgUp"; + default: return keyname(keycode); + } +} + +u8string Event::to_string() const +{ + u8string s; + if ((modifiers & VIRTUAL) || (keycode == 0 && !ch)) { + // No actual event + s = ""; + } else if (is_literal()) { + s = u8string(unistring(&ch, &ch + 1)); + } else { + //DBG(2, ("comp: ")); + if (modifiers) { + if (modifiers & CTRL) + s += "C-"; + if (modifiers & ALT) + s += "M-"; + if (modifiers & SHIFT) + s += "Shift-"; + } + if (ch) { + if ((modifiers & ALT) && ch == '\t') { + // Hmmm... this is a special case. Ctrl-I is actually TAB. + return u8string("C-M-i"); + } + if ((modifiers & CTRL) && ch == '^') { + // Hmmm... this is a more friendly representation. + return u8string("C-Spc"); + } + s += u8string(unistring(&ch, &ch + 1)).c_str(); + } else { + if (keycode >= KEY_F(0) && keycode <= KEY_F(63)) { + u8string num; + num.cformat("F%d", keycode - KEY_F(0)); + s += num; + } else { + s += ext_keyname(keycode); + } + } + } + return s; +} + +void Event::print() +{ + DBG(2, ("EVENT: ")); + if (is_literal()) + DBG(2, ("literal: '%lc'\n", ch)); + else { + DBG(2, ("comp: ")); + if (modifiers) { + if (modifiers & CTRL) + DBG(2, ("CTRL-")); + if (modifiers & ALT) + DBG(2, ("ALT-")); + if (modifiers & SHIFT) + DBG(2, ("SHIFT-")); + } + if (ch) + DBG(2, ("'%lc'\n", ch)); + else + DBG(2, ("%s\n", keyname(keycode))); + } +} + +#ifdef HAVE_WIDE_CURSES +static void low_level_get_wch(Event &evt, WINDOW *wnd) +{ + wint_t c; + int ret; + do { + ret = wget_wch(wnd, &c); + if (ret == KEY_CODE_YES) { + evt.ch = 0; + evt.keycode = (int)c; + } else if (ret == OK) { + evt.keycode = 0; + evt.ch = (unichar)c; + } + } while (ret == ERR); +} +#else +static void low_level_get_wch(Event &evt, WINDOW *wnd) +{ + int ret; + do { + ret = wgetch(wnd); + if (ret >= 256) { + evt.ch = 0; + evt.keycode = ret; + } else { + evt.keycode = 0; + evt.ch = terminal::force_iso88598 ? iso88598_to_unicode(ret) : BTOWC(ret); + } + } while (ret == ERR); +} +#endif + +static void get_base_event(Event &evt, WINDOW *wnd) +{ + evt.type = evtKbd; + evt.modifiers = 0; + low_level_get_wch(evt, wnd); + if (evt.keycode == 0 && evt.ch < 32) { + switch (evt.ch) { + case 9: + case 13: + case 27: + // leave alone TAB, ENTER, ESC + break; + case 0: + case 28: + case 29: + case 30: + case 31: + evt.ch += 'A' - 1; + evt.modifiers = CTRL; + break; + default: + evt.ch += 'a' - 1; + evt.modifiers = CTRL; + } + } +} + +bool is_event_pending = false; +Event pending_event; + +void get_next_event(Event &evt, WINDOW *wnd) +{ + if (is_event_pending) { + evt = pending_event; + is_event_pending = false; + return; + } + + get_base_event(evt, wnd); + if (evt.ch == 27) { + // emulate ALT + get_base_event(evt, wnd); + if (evt.ch != 27) // ...but make sure we can still generate ESCape + evt.modifiers |= ALT; + } +} + +void set_next_event(const Event &evt) +{ + is_event_pending = true; + pending_event = evt; +} + |