ref: e8d44e6791e9568d0a4e3291d15692f9223870f1
dir: /libnpe_sdl2/events.c/
#include "_sdl.h"
enum {
/* FIXME missing plumber→dropfile */
Ckey,
Ckeytype,
Cmouse,
Cresize,
Cevent,
Numchan,
Rdown = 0,
Rup,
Rrepeat,
};
static int kmod;
static Rune rune;
static Keyboardctl kctl;
static int quitreq;
static SDL_Event evt;
static Alt salt[Numchan+1] = {
[Ckey] = { nil, &rune, CHANRCV },
[Ckeytype] = { nil, nil, CHANNOP },
[Cmouse] = { nil, &npe_sdl.m, CHANRCV },
[Cresize] = { nil, nil, CHANRCV },
[Cevent] = { nil, &evt, CHANRCV },
[Numchan] = { nil, nil, CHANNOBLK },
};
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;
salt[Cevent].c = chancreate(sizeof(SDL_Event), 20);
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;
}
Uint32
SDL_RegisterEvents(int n)
{
static Uint32 userevent = 0x1000;
Uint32 u;
if(userevent+n > 0x2000 || n < 0)
u = (Uint32)-1;
else
u = userevent += n;
return u;
}
int
SDL_PushEvent(SDL_Event *event)
{
return send(salt[Cevent].c, event) > 0 ? 1 : -1;
}
int
SDL_QuitRequested(void)
{
return quitreq;
}
struct {
SDL_EventFilter f;
void *aux;
} filter = {
nil,
nil,
};
void
SDL_SetEventFilter(SDL_EventFilter f, void *userdata)
{
filter.f = f;
filter.aux = userdata;
}
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;
goto Filter;
}else if((npe_sdl.hints & Altf4noclose) == 0 && (kmod & KMOD_LALT) != 0 && rune == (KF|4)){
e->type = SDL_QUIT;
quitreq = 1;
goto Filter;
}else{
e->type = (t == Rup) ? SDL_KEYUP : SDL_KEYDOWN;
e->key.repeat = t == Rrepeat;
e->key.keysym.scancode = SDL_GetScancodeFromKey(rune);
if(rune == '\n')
rune = SDLK_RETURN;
e->key.keysym.sym = rune;
e->key.state = e->type;
goto Filter;
}
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;
e->motion.state = npe_sdl.m.buttons;
goto Filter;
}
}
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);
goto Filter;
}
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);
goto Filter;
}
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);
goto Filter;
}
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;
goto Filter;
}
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?
goto Filter;
case Cevent:
memcpy(e, &evt, sizeof(*e));
goto Filter;
}
return 0;
Filter:
if(filter.f != nil && filter.f(filter.aux, e) == 0)
return 0;
return 1;
}
int
SDL_WaitEvent(SDL_Event *e)
{
int r;
SDL_Event ee;
salt[Numchan].op = CHANEND;
if(e == nil){
r = SDL_PollEvent(&ee);
SDL_PushEvent(&ee);
} else
r = SDL_PollEvent(e);
salt[Numchan].op = CHANNOBLK;
return r;
}
SDL_Scancode
SDL_GetScancodeFromKey(SDL_Keycode 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 Uint8 kbdstate[SDL_NUM_SCANCODES];
Uint8*
SDL_GetKeyboardState(int *numkeys)
{
if(numkeys != nil)
*numkeys = SDL_NUM_SCANCODES;
return kbdstate;
}
char*
SDL_GetKeyName(SDL_Keycode key)
{
/* upstream quirk: return value is valid only until next call */
static char res[64];
res[0] = res[1] = '\0';
if(key >= '0' && key <= '9' || key == '-' || key == '=' || key == '\'')
res[0] = key;
else if(key == '[' || key == ']' || key == '\\' || key == ';' || key == '/')
res[0] = key;
else if(key >= 'a' && key <= 'z')
res[0] = toupper(key);
else if(key >= (KF|1) && key <= (KF|12))
snprint(res, sizeof(res), "F%d", key - KF);
else if(key == '\n')
return "Return";
else if(key == Kesc)
return "Escape";
else if(key == Kbs)
return "Backspace";
else if(key == '\t')
return "Tab";
else if(key == ' ')
return "Space";
else if(key == Kright)
return "Right";
else if(key == Kleft)
return "Left";
else if(key == Kup)
return "Up";
else if(key == Kdown)
return "Down";
else if(key == Kins)
return "Insert";
else if(key == Khome)
return "Home";
else if(key == Kpgup)
return "PageUp";
else if(key == Kpgdown)
return "PageDown";
else if(key == Kdel)
return "Delete";
else if(key == Kend)
return "End";
else if(key == Kalt)
return "Left Alt";
else if(key == Kctl)
return "Left Ctrl";
else if(key == Kmod4)
return "Left GUI";
else if(key == Kaltgr)
return "Right Alt";
else if(key == Kshift)
return "Left Shift";
return res;
}
SDL_Keycode
SDL_GetKeyFromName(char *name)
{
char *e;
long p;
if(strcmp(name, "Return") == 0) return '\n';
if(strcmp(name, "Escape") == 0) return Kesc;
if(strcmp(name, "Backspace") == 0) return Kbs;
if(strcmp(name, "Tab") == 0) return '\t';
if(strcmp(name, "Space") == 0) return ' ';
if(strcmp(name, "Right") == 0) return Kright;
if(strcmp(name, "Left") == 0) return Kleft;
if(strcmp(name, "Up") == 0) return Kup;
if(strcmp(name, "Down") == 0) return Kdown;
if(strcmp(name, "Insert") == 0) return Kins;
if(strcmp(name, "Home") == 0) return Khome;
if(strcmp(name, "PageUp") == 0) return Kpgup;
if(strcmp(name, "PageDown") == 0) return Kpgdown;
if(strcmp(name, "Delete") == 0) return Kdel;
if(strcmp(name, "End") == 0) return Kend;
if(strcmp(name, "Left Alt") == 0) return Kalt;
if(strcmp(name, "Left Ctrl") == 0) return Kctl;
if(strcmp(name, "Left GUI") == 0) return Kmod4;
if(strcmp(name, "Right Alt") == 0) return Kaltgr;
if(strcmp(name, "Left Shift") == 0) return Kshift;
if(name[0] == 'F' && name[1] != '\0'){
p = strtol(name+1, &e, 10);
if(e == name + 1 || p < 1 || p > 12)
return SDLK_UNKNOWN;
return KF | p;
}
if(name[0] >= '0' && name[0] <= '9')
return name[0];
if(name[0] >= 'A' && name[0] <= 'Z')
return tolower(name[0]);
if(name[0] >= 'a' && name[0] <= 'z')
return name[0];
if(name[0] == '-' || name[0] == '=' || name[0] == '\'')
return name[0];
if(name[0] == '[' || name[0] == ']' || name[0] == '\\' || name[0] == ';' || name[0] == '/')
return name[0];
return SDLK_UNKNOWN;
}
static void
kbdproc(void *)
{
char buf[128], buf2[128], *s;
int kfd, n, kbin, t;
Rune r, scan, 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;
memset(kbdstate, 0, sizeof(kbdstate));
while(*s){
s += chartorune(&r, s);
scan = SDL_GetScancodeFromKey(r);
if(scan < nelem(kbdstate))
kbdstate[scan] = 1;
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;
memset(kbdstate, 0, sizeof(kbdstate));
while(*s){
s += chartorune(&r, s);
scan = SDL_GetScancodeFromKey(r);
if(scan < nelem(kbdstate))
kbdstate[scan] = 1;
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);
}
}