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- /* amiga_eventloop.c -- Eventloop for AmigaDOS
- Copyright (C) 1993, 1994 John Harper <jsh@ukc.ac.uk>
-
- This file is part of Jade.
-
- Jade 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, or (at your option)
- any later version.
-
- Jade 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 Jade; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "jade.h"
- #include "jade_protos.h"
-
- #define INTUI_V36_NAMES_ONLY
- #include <clib/intuition_protos.h>
- #include <intuition/gadgetclass.h>
- #include <string.h>
-
- _PR VALUE event_loop(void);
-
- VALUE
- handle_event(struct IntuiMessage *imsg)
- {
- VW *oldvw = curr_vw, *ev_vw;
- VALUE result = sym_nil;
- ev_vw = (VW *)imsg->IDCMPWindow->UserData;
- if(((imsg->Class != IDCMP_RAWKEY) || (!(imsg->Code & IECODE_UP_PREFIX)))
- && ((imsg->Class != IDCMP_MENUPICK) || (imsg->Code != MENUNULL)))
- {
- switch(imsg->Class)
- {
- u_long code, mods;
- case IDCMP_NEWSIZE:
- if(ev_vw == oldvw)
- cursor(ev_vw, CURS_OFF);
- sys_update_dimensions(ev_vw);
- ev_vw->vw_Flags |= VWFF_FORCE_REFRESH;
- refresh_window(ev_vw);
- if(ev_vw == oldvw)
- cursor(ev_vw, CURS_ON);
- break;
- case IDCMP_ACTIVEWINDOW:
- if(ev_vw != oldvw)
- {
- cursor(oldvw, CURS_OFF);
- cursor(ev_vw, CURS_ON);
- undo_distinct();
- curr_vw = ev_vw;
- }
- break;
- case IDCMP_MOUSEBUTTONS:
- case IDCMP_MOUSEMOVE:
- #ifndef NOSCRLBAR
- if(ev_vw->vw_SBar.gad
- && (ev_vw->vw_SBar.gad->Flags & GFLG_SELECTED))
- {
- long newtop;
- GetAttr(PGA_Top, ev_vw->vw_SBar.gad, &newtop);
- if(ev_vw == oldvw)
- cursor(ev_vw, CURS_OFF);
- set_start_line(ev_vw, newtop);
- refresh_window(ev_vw);
- if(ev_vw == oldvw)
- cursor(ev_vw, CURS_ON);
- ev_vw->vw_SBar.top = newtop;
- break;
- }
- #endif
- /* FALL THROUGH */
- case IDCMP_RAWKEY:
- code = mods = 0;
- translate_event(&code, &mods, imsg);
- if(mods & EV_TYPE_MASK)
- {
- curr_vw = ev_vw;
- if(oldvw != ev_vw)
- {
- cursor(oldvw, CURS_OFF);
- undo_distinct();
- }
- result = usekey(imsg, code, mods, (ev_vw == oldvw));
- }
- break;
- case IDCMP_CLOSEWINDOW:
- curr_vw = ev_vw;
- undo_distinct();
- cursor(oldvw, CURS_OFF);
- result = cmd_eval_hook2(MKSTR("window-closed-hook"), sym_nil);
- if(curr_vw)
- {
- refresh_world();
- cursor(curr_vw, CURS_ON);
- }
- break;
- case IDCMP_MENUPICK:
- curr_vw = ev_vw;
- reset_message(ev_vw);
- if(ev_vw == oldvw)
- {
- cursor(curr_vw, CURS_OFF);
- undo_distinct();
- }
- result = evalmenu(imsg->Code, imsg->Qualifier);
- break;
- #ifndef NOSCRLBAR
- case IDCMP_GADGETUP:
- case IDCMP_GADGETDOWN:
- if(imsg->IAddress == ev_vw->vw_SBar.gad)
- {
- long newtop;
- GetAttr(PGA_Top, ev_vw->vw_SBar.gad, &newtop);
- if(ev_vw == oldvw)
- cursor(ev_vw, CURS_OFF);
- set_start_line(ev_vw, newtop);
- refresh_window(ev_vw);
- if(ev_vw == oldvw)
- cursor(ev_vw, CURS_ON);
- ev_vw->vw_SBar.top = newtop;
- }
- break;
- #endif
- }
- }
- return(result);
- }
-
- VALUE
- event_loop(void)
- {
- VALUE result = sym_nil;
- int ticks = 0;
- recurse_depth++;
- std_message(curr_vw);
- refresh_world_curs();
- while(curr_vw)
- {
- u_long signals;
- struct IntuiMessage *imsg;
- std_message(curr_vw);
- if(input_lock && rexx_sig)
- signals = Wait(rexx_sig);
- else
- signals = Wait((1 << curr_vw->vw_Window->UserPort->mp_SigBit)
- | rexx_sig | server_sig | SIGBREAKF_CTRL_C);
- if(signals & SIGBREAKF_CTRL_C)
- ami_interrupt_handler();
- else if(rexx_sig && (signals & rexx_sig))
- {
- disp_rexx_port();
- refresh_world_curs();
- }
- else if(server_sig && (signals & server_sig))
- server_accept();
- while(INT_P
- || (curr_vw
- && (imsg = (struct IntuiMessage *)
- GetMsg(curr_vw->vw_Window->UserPort))))
- {
- if(INT_P)
- result = NULL;
- else
- {
- struct IntuiMessage imsgcopy = *imsg;
- ReplyMsg((struct Message *)imsg);
- if(imsg->Class == IDCMP_INTUITICKS)
- {
- bool refreshp = FALSE;
- /* This needs fixing. Intuiticks are only received
- while one of our windows is active. */
- if(++ticks >= (EVENT_TIMEOUT_LENGTH * 10))
- {
- ticks = 0;
- if(print_event_prefix() || auto_save_buffers())
- refreshp = TRUE;
- else if(data_after_gc > idle_gc_threshold)
- {
- /* nothing was saved so try a GC */
- cmd_garbage_collect(sym_t);
- }
- else
- {
- VALUE hook = cmd_symbol_value(sym_idle_hook,
- sym_t);
- if(!VOIDP(hook) && !NILP(hook))
- {
- cmd_eval_hook2(sym_idle_hook, sym_nil);
- refreshp = TRUE;
- }
- }
- if(refreshp)
- {
- std_message(curr_vw);
- refresh_world_curs();
- }
- }
- }
- else
- {
- ticks = 0;
- result = handle_event(&imsgcopy);
- }
- }
- if(!result)
- {
- if(throw_value)
- {
- VALUE tv = throw_value;
- VALUE car = VCAR(tv);
- throw_value = NULL;
- if(car == sym_exit)
- {
- result = VCDR(tv);
- if(recurse_depth > 0)
- goto end;
- }
- else if((car == sym_top_level) && (recurse_depth == 0))
- result = VCDR(tv);
- else if(car == sym_quit)
- goto end;
- else if(car == sym_user_interrupt)
- {
- handle_error(car, sym_nil);
- result = sym_nil;
- }
- else if(car == sym_error)
- {
- handle_error(VCAR(VCDR(tv)), VCDR(VCDR(tv)));
- result = sym_nil;
- }
- else if(recurse_depth == 0)
- {
- result = sym_nil;
- #if 0
- /* This is no good; we have to do the error NOW */
- cmd_signal(sym_no_catcher, LIST_1(car));
- #else
- handle_error(sym_no_catcher, LIST_1(car));
- #endif
- }
- else
- {
- throw_value = tv;
- goto end;
- }
- }
- else
- result = sym_nil;
- }
- }
- if(!curr_vw)
- goto end;
- #ifndef NOSCRLBAR
- if(((curr_vw->vw_Flags & VWFF_SLEEPING) == 0)
- && ((curr_vw->vw_StartLine != curr_vw->vw_SBar.top)
- || (curr_vw->vw_Tx->tx_NumLines != curr_vw->vw_SBar.total)))
- {
- sys_update_scroller(curr_vw);
- }
- #endif
- std_message(curr_vw);
- if(curr_vw->vw_Flags & VWFF_REFRESH_STATUS)
- {
- refresh_message(curr_vw);
- curr_vw->vw_Flags &= ~VWFF_REFRESH_STATUS;
- }
- }
- end:
- recurse_depth--;
- return(result);
- }
-