ref: 2d624997f0429d6668b4af016508f994b53291bc
dir: /libnpe_sdl2/events.c/
#include "_sdl.h" enum { /* FIXME missing plumber→dropfile */ Ckey, Ckeytype, Cmouse, Cresize, Numchan, Rdown = 0, Rup, Rrepeat, }; static int kmod; static Rune rune; static Keyboardctl kctl; static int quitreq; static Alt salt[Numchan+1] = { [Ckey] = { nil, &rune, CHANRCV }, [Ckeytype] = { nil, nil, CHANNOP }, [Cmouse] = { nil, &npe_sdl.m, CHANRCV }, [Cresize] = { nil, nil, CHANRCV }, [Numchan] = { nil, nil, CHANNOBLK }, }; static int rune2scancode(Rune r); static void kbdproc(void *); static void mouseproc(void *); int npe_sdl_init_input(void) { if((npe_sdl.mctl = initmouse(nil, screen)) == nil) return -1; salt[Ckey].c = chancreate(sizeof(Rune), 20); salt[Ckeytype].c = chancreate(sizeof(int), 20); salt[Cmouse].c = chancreate(sizeof(Mouse), 20); salt[Cresize].c = npe_sdl.mctl->resizec; kctl.c = salt[Ckey].c; /* for enter() */ if(salt[Ckey].c == nil || salt[Ckeytype].c == nil || salt[Cmouse].c == nil) return -1; if(proccreate(kbdproc, nil, 4096) < 0 || proccreate(mouseproc, nil, 4096) < 0) return -1; return 0; } Uint32 SDL_GetWindowID(SDL_Window *win) { USED(win); return 1; } SDL_Keymod SDL_GetModState(void) { return kmod; } int SDL_EventState(Uint32, int) { return 0; } int SDL_RegisterEvents(int) { /* FIXME this will need implementation if SDL_PushEvent is */ return -1; } int SDL_PushEvent(SDL_Event *event) { /* FIXME does it matter? */ USED(event); return -1; } int SDL_QuitRequested(void) { return quitreq; } void SDL_PumpEvents(void) { /* FIXME does it matter? */ } #define ISTEXT(r) ((r) >= 0x20 && ((r) < KF || (r) >= KF+0x1000)) int SDL_PollEvent(SDL_Event *e) { int t, down; if(e == nil) /* FIXME need to buffer the event so it won't get lost */ return 0; switch(alt(salt)){ case Ckey: memset(e, 0, sizeof(*e)); recv(salt[Ckeytype].c, &t); if(npe_sdl.textinput && ISTEXT(rune)){ if(t == Rup) break; e->type = SDL_TEXTINPUT; e->text.text[runetochar(e->text.text, &rune)] = 0; return 1; }else if((npe_sdl.hints & Altf4noclose) == 0 && (kmod & KMOD_LALT) != 0 && rune == (KF|4)){ e->type = SDL_QUIT; quitreq = 1; return 1; }else{ e->type = (t == Rup) ? SDL_KEYUP : SDL_KEYDOWN; e->key.repeat = t == Rrepeat; e->key.keysym.scancode = rune2scancode(rune); if(rune == '\n') rune = SDLK_RETURN; e->key.keysym.sym = rune; e->key.state = e->type; return 1; } break; case Cmouse: if(screen == nil) break; if(eqpt(npe_sdl.m.xy, Pt(-1, -1))){ npe_sdl.m.xy = npe_sdl.center; npe_sdl.om.xy = npe_sdl.center; return 0; /* swallow */ } memset(e, 0, sizeof(*e)); e->motion.x = (npe_sdl.m.xy.x - screen->r.min.x) * npe_sdl.scale; e->motion.y = (npe_sdl.m.xy.y - screen->r.min.y) * npe_sdl.scale; e->motion.xrel = (npe_sdl.m.xy.x - npe_sdl.om.xy.x) * npe_sdl.scale; e->motion.yrel = (npe_sdl.m.xy.y - npe_sdl.om.xy.y) * npe_sdl.scale; if(!eqpt(npe_sdl.m.xy, npe_sdl.om.xy)){ npe_sdl.mredraw = 1; if(npe_sdl.m.buttons == npe_sdl.om.buttons){ e->type = SDL_MOUSEMOTION; return 1; } } if(npe_sdl.m.buttons == npe_sdl.om.buttons) break; /* FIXME there is a lot of hope for multiple buttons to never change its state at the same time */ if((down = (npe_sdl.m.buttons & 1)) != (npe_sdl.om.buttons & 1)){ /* left */ e->type = down ? SDL_MOUSEBUTTONDOWN : SDL_MOUSEBUTTONUP; e->button.button = SDL_BUTTON_LEFT; npe_sdl.om.buttons = (npe_sdl.om.buttons & ~1) | (npe_sdl.m.buttons & 1); return 1; } if((down = (npe_sdl.m.buttons & 2)) != (npe_sdl.om.buttons & 2)){ /* middle */ e->type = down ? SDL_MOUSEBUTTONDOWN : SDL_MOUSEBUTTONUP; e->button.button = SDL_BUTTON_MIDDLE; npe_sdl.om.buttons = (npe_sdl.om.buttons & ~2) | (npe_sdl.m.buttons & 2); return 1; } if((down = (npe_sdl.m.buttons & 4)) != (npe_sdl.om.buttons & 4)){ /* right */ e->type = down ? SDL_MOUSEBUTTONDOWN : SDL_MOUSEBUTTONUP; e->button.button = SDL_BUTTON_RIGHT; npe_sdl.om.buttons = (npe_sdl.om.buttons & ~4) | (npe_sdl.m.buttons & 4); return 1; } if(npe_sdl.m.buttons & (8|16)){ e->type = SDL_MOUSEWHEEL; e->wheel.x = 0; e->wheel.y = (npe_sdl.m.buttons & 8) ? 1 : -1; return 1; } break; case Cresize: memset(e, 0, sizeof(*e)); npe_sdl.fullredraw = 1; while(getwindow(display, Refnone) != 1) ; e->type = SDL_WINDOWEVENT; e->window.event = SDL_WINDOWEVENT_EXPOSED; e->window.windowID = 1; //TODO more then one? return 1; } return 0; } int SDL_WaitEvent(SDL_Event *e) { int r; salt[Numchan].op = CHANEND; r = SDL_PollEvent(e); salt[Numchan].op = CHANNOBLK; return r; } static int rune2scancode(Rune r) { if(r >= 'a' && r <= 'z') return r - 'a' + SDL_SCANCODE_A; if(r >= '1' && r <= '9') return r - '1' + SDL_SCANCODE_1; if(r == '0') return SDL_SCANCODE_0; if(r == '\n') return SDL_SCANCODE_RETURN; if(r == Kesc) return SDL_SCANCODE_ESCAPE; if(r == Kbs) return SDL_SCANCODE_BACKSPACE; if(r == '\t') return SDL_SCANCODE_TAB; if(r == ' ') return SDL_SCANCODE_SPACE; if(r == '-') return SDL_SCANCODE_MINUS; if(r == '=') return SDL_SCANCODE_EQUALS; if(r == '[') return SDL_SCANCODE_LEFTBRACKET; if(r == ']') return SDL_SCANCODE_RIGHTBRACKET; if(r == '\\') return SDL_SCANCODE_BACKSLASH; if(r == ';') return SDL_SCANCODE_SEMICOLON; if(r == '\'') return SDL_SCANCODE_APOSTROPHE; if(r == '/') return SDL_SCANCODE_SLASH; if(r == Kright) return SDL_SCANCODE_RIGHT; if(r == Kleft) return SDL_SCANCODE_LEFT; if(r == Kdown) return SDL_SCANCODE_DOWN; if(r == Kup) return SDL_SCANCODE_UP; if(r == Kins) return SDL_SCANCODE_INSERT; if(r == Khome) return SDL_SCANCODE_HOME; if(r == Kpgup) return SDL_SCANCODE_PAGEUP; if(r == Kdel) return SDL_SCANCODE_DELETE; if(r == Kend) return SDL_SCANCODE_END; if(r == Kpgdown) return SDL_SCANCODE_PAGEDOWN; if(r == Kctl) return SDL_SCANCODE_LCTRL; if(r == Kshift) return SDL_SCANCODE_LSHIFT; if(r == Kalt) return SDL_SCANCODE_LALT; if(r == Kmod4) return SDL_SCANCODE_LGUI; if(r == Kaltgr) return SDL_SCANCODE_RALT; if(r >= (KF|1) && r <= (KF|12)) return SDL_SCANCODE_F1 + r - (KF|1); /* FIXME SDL_SCANCODE_PRINTSCREEN = 0x46, SDL_SCANCODE_SCROLLLOCK, SDL_SCANCODE_NUMLOCKCLEAR, SDL_SCANCODE_KP_DIVIDE, SDL_SCANCODE_KP_MULTIPLY, SDL_SCANCODE_KP_MINUS, SDL_SCANCODE_KP_PLUS, SDL_SCANCODE_KP_ENTER, SDL_SCANCODE_KP_1, SDL_SCANCODE_KP_2, SDL_SCANCODE_KP_3, SDL_SCANCODE_KP_4, SDL_SCANCODE_KP_5, SDL_SCANCODE_KP_6, SDL_SCANCODE_KP_7, SDL_SCANCODE_KP_8, SDL_SCANCODE_KP_9, SDL_SCANCODE_KP_0, SDL_SCANCODE_KP_PERIOD, SDL_SCANCODE_NONUSBACKSLASH, SDL_SCANCODE_NONUSHASH, */ /* FIXME there are some missing */ if(r == L'`' || r == L'´') /* FIXME this is most likely wrong */ return SDL_SCANCODE_GRAVE; return r; } static void kbdproc(void *) { char buf[128], buf2[128], *s; int kfd, n, kbin, t; Rune r, o; threadsetname("kbdproc"); if((kfd = open("/dev/kbd", OREAD|OCEXEC)) < 0) sysfatal("/dev/kbd: %r"); kbin = open("/dev/kbin", OWRITE|OCEXEC); buf2[0] = 0; buf2[1] = 0; buf[0] = 0; kmod = 0; for(;;){ if(buf[0] != 0){ n = strlen(buf)+1; memmove(buf, buf+n, sizeof(buf)-n); } if(buf[0] == 0){ n = read(kfd, buf, sizeof(buf)-1); if(n <= 0) break; buf[n-1] = 0; buf[n] = 0; } switch(buf[0]){ case 'c': if(chartorune(&r, buf+1) > 0 && r != Runeerror){ if(ISTEXT(r)) o = r; send(salt[Ckey].c, &o); send(salt[Ckeytype].c, &t); t = Rrepeat; } default: continue; case 'k': s = buf+1; while(*s){ s += chartorune(&r, s); if(utfrune(buf2+1, r) == nil){ t = Rdown; if(r == Kalt){ /* magic trick: write Alt scancode to disable the "compose" mode */ /* FIXME: does this work in both native AND drawterm? */ write(kbin, "\x46", 1); kmod |= KMOD_LALT; }else if (r == Kshift) kmod |= KMOD_LSHIFT; else if(r == Kctl) kmod |= KMOD_LCTRL; else if(r == Kaltgr) kmod |= KMOD_RALT; else if(r == Kmod4) kmod |= KMOD_LGUI; else{ o = npe_sdl.textinput ? r : tolowerrune(r); continue; } o = r; send(salt[Ckey].c, &r); send(salt[Ckeytype].c, &t); t = Rrepeat; } } break; case 'K': s = buf2+1; while(*s){ s += chartorune(&r, s); if(utfrune(buf+1, r) == nil){ if(r == Kalt) kmod &= ~KMOD_LALT; else if(r == Kshift) kmod &= ~KMOD_LSHIFT; else if(r == Kctl) kmod &= ~KMOD_LCTRL; t = Rup; send(salt[Ckey].c, &r); send(salt[Ckeytype].c, &t); } } break; } strcpy(buf2, buf); } threadexits(nil); } static void mouseproc(void *) { Mouse m; for(;;){ recv(npe_sdl.mctl->c, &m); if(npe_sdl.mgrab == SDL_TRUE){ if(!ptinrect(m.xy, npe_sdl.grabout)){ moveto(npe_sdl.mctl, npe_sdl.center); m.xy = Pt(-1,-1); } } send(salt[Cmouse].c, &m); } }