ref: fe53c0930e8595a2e8b5aa71e907a1f2bec6059b
dir: /sys/src/libcontrol/keyboard.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <mouse.h>
#include <keyboard.h>
#include <control.h>
typedef struct Keyboard Keyboard;
enum{
SRegular = 0,
SShift = 1,
SCaps = 2,
SMask = 3,
Nstate = 4,
SControl = 4,
};
struct Keyboard
{
Control;
CImage *image;
CImage *mask;
CImage *light;
CImage *textcolor;
CImage *bordercolor;
CFont *font;
CFont *ctlfont;
Image *im[Nstate];
int border;
int lastbut;
int state;
char *key;
};
enum{
EBorder,
EBordercolor,
EFocus,
EFont,
EFormat,
EHide,
EImage,
ELight,
EMask,
ERect,
EReveal,
EShow,
ESize,
};
static char *cmds[] = {
[EBorder] = "border",
[EBordercolor] = "bordercolor",
[EFocus] = "focus",
[EFont] = "font",
[EFormat] = "format",
[EHide] = "hide",
[EImage] = "image",
[ELight] = "light",
[EMask] = "mask",
[ERect] = "rect",
[EReveal] = "reveal",
[EShow] = "show",
[ESize] = "size",
nil
};
enum
{
Nrow = 5
};
static uchar wid [Nrow][16] = {
{16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 30, },
{24, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 24, },
{32, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, },
{40, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, },
{30, 30, 80, 40, 42, 24, },
};
static char *keyregular[Nrow] = {
"`\0001\0002\0003\0004\0005\0006\0007\0008\0009\0000\0-\0=\0\\\0<-\0\0",
"->\0q\0w\0e\0r\0t\0y\0u\0i\0o\0p\0[\0]\0Del\0\0",
"Caps\0a\0s\0d\0f\0g\0h\0j\0k\0l\0;\0'\0Enter\0\0",
"Shift\0z\0x\0c\0v\0b\0n\0m\0,\0.\0/\0Shift\0\0",
"Ctrl\0Alt\0 \0Scrib\0Menu\0Esc\0\0"
};
static char *keyshift[Nrow] = {
"~\0!\0@\0#\0$\0%\0^\0&\0*\0(\0)\0_\0+\0|\0<-\0\0",
"->\0Q\0W\0E\0R\0T\0Y\0U\0I\0O\0P\0{\0}\0Del\0\0",
"Caps\0A\0S\0D\0F\0G\0H\0J\0K\0L\0:\0\"\0Enter\0\0",
"Shift\0Z\0X\0C\0V\0B\0N\0M\0<\0>\0?\0Shift\0\0",
"Ctrl\0Alt\0 \0Scrib\0Menu\0Esc\0\0"
};
static char *keycaps[Nrow] = {
"`\0001\0002\0003\0004\0005\0006\0007\0008\0009\0000\0-\0=\0\\\0<-\0\0",
"->\0Q\0W\0E\0R\0T\0Y\0U\0I\0O\0P\0[\0]\0Del\0\0",
"Caps\0A\0S\0D\0F\0G\0H\0J\0K\0L\0;\0'\0Enter\0\0",
"Shift\0Z\0X\0C\0V\0B\0N\0M\0,\0.\0/\0Shift\0\0",
"Ctrl\0Alt\0 \0Scrib\0Menu\0Esc\0\0"
};
static char *keycapsshift[Nrow] = {
"~\0!\0@\0#\0$\0%\0^\0&\0*\0(\0)\0_\0+\0|\0<-\0\0",
"->\0q\0w\0e\0r\0t\0y\0u\0i\0o\0p\0{\0}\0Del\0\0",
"Caps\0a\0s\0d\0f\0g\0h\0j\0k\0l\0:\0\"\0Enter\0\0",
"Shift\0z\0x\0c\0v\0b\0n\0m\0<\0>\0?\0Shift\0\0",
"Ctrl\0Alt\0 \0Scrib\0Menu\0Esc\0\0"
};
struct{
char *name;
int val;
}keytab[] = {
"Shift", 0,
"Ctrl", 0,
"Alt", 0,
"Caps", 0,
"Del", '\177',
"Enter", '\n',
"Esc", '\033',
"<-", '\b',
"->", '\t',
"Scrib", 0x10000,
"Menu", 0x10001,
nil, 0,
};
static char **keyset[Nstate] = {
keyregular,
keyshift,
keycaps,
keycapsshift,
};
static void keyboardshow(Keyboard*);
static void keyup(Keyboard*, Point);
static void keydown(Keyboard*, Point);
static void keyresize(Keyboard*);
static void
keyboardmouse(Control *c, Mouse *m)
{
Keyboard *k;
k = (Keyboard *)c;
if(m->buttons==1)
keydown(k, m->xy);
else if(k->lastbut==1 && m->buttons==0)
keyup(k, m->xy);
k->lastbut = m->buttons;
}
static void
keyboardfree(Control *c)
{
int i;
Keyboard *k;
k = (Keyboard *)c;
_putctlimage(k->image);
_putctlimage(k->mask);
_putctlimage(k->light);
_putctlimage(k->textcolor);
_putctlimage(k->bordercolor);
_putctlfont(k->font);
_putctlfont(k->ctlfont);
for(i=0; i<nelem(k->im); i++)
freeimage(k->im[i]);
free(k->format);
}
static int
keyboardy(Keyboard *k, int row)
{
int dy;
if(row >= Nrow)
return k->rect.max.y-k->border;
dy = Dy(k->rect)-2*k->border;
return k->rect.min.y+k->border+(row*dy+Nrow-1)/Nrow;
}
static char*
whichkey(Keyboard *k, Point p, int *rowp, int *colp, Rectangle *rp)
{
uchar *wp;
char *kp;
int row, col, dx, dy, x, n, maxx;
Rectangle r;
r = insetrect(k->rect, k->border);
if(!ptinrect(p, r))
return nil;
maxx = r.max.x;
dx = Dx(r);
dy = Dy(r);
row = (p.y - r.min.y)*Nrow/dy;
if(row >= Nrow)
row = Nrow-1;
r.min.y = keyboardy(k, row);
r.max.y = keyboardy(k, row+1);
x = r.min.x;
kp = keyset[k->state&SMask][row];
wp = wid[row];
for(col=0; *kp; col++,kp+=n+1){
n = strlen(kp);
r.min.x = x;
r.max.x = x + (wp[col]*dx+255)/256;
if(kp[n+1] == '\0')
r.max.x = maxx;
if(r.max.x > p.x)
break;
x = r.max.x;
}
*rp = insetrect(r, 1);
*rowp = row;
*colp = col;
return kp;
}
static Rectangle
keyrect(Keyboard *k, int row, int col)
{
uchar *wp;
char *kp;
int i, x, n, dx;
Rectangle r;
Point p;
r = insetrect(k->rect, k->border);
p = r.min;
dx = Dx(r);
r.min.y = keyboardy(k, row);
r.max.y = keyboardy(k, row+1);
x = r.min.x;
kp = keyset[0][row];
wp = wid[row];
for(i=0; *kp; i++,kp+=n+1){
n = strlen(kp);
r.min.x = x;
r.max.x = x + (wp[i]*dx+255)/256;
if(kp[n+1] == '\0')
r.max.x = p.x+dx;
if(i >= col)
break;
x = r.max.x;
}
return insetrect(r, 1);
}
static void
keydraw(Keyboard *k, int state)
{
Point p, q;
int row, col, x, dx, dy, nexty, n;
uchar *wp;
char *kp;
Rectangle r;
Font *f, *f1, *f2;
Image *im;
freeimage(k->im[state]);
k->im[state] = nil;
if(Dx(k->rect)-2*k->border <= 0)
return;
im = allocimage(display, k->rect, screen->chan, 0, ~0);
if(im == nil)
return;
k->im[state] = im;
r = insetrect(k->rect, k->border);
border(im, k->rect, k->border, k->bordercolor->image, ZP);
draw(im, r, k->image->image, nil, ZP);
dx = Dx(r);
dy = Dy(r);
p = r.min;
f1 = k->font->font;
f2 = k->ctlfont->font;
nexty = p.y;
for(row=0; row<Nrow; row++){
x = p.x;
kp = keyset[state][row];
wp = wid[row];
r.min.y = nexty;
nexty = keyboardy(k, row+1);
r.max.y = nexty;
for(col=0; *kp; col++,kp+=n+1){
r.min.x = x;
r.max.x = x + (wp[col]*dx+255)/256;
n = strlen(kp);
if(kp[n+1] == '\0')
r.max.x = p.x+dx;
if(row == Nrow-1)
r.max.y = p.y+dy;
if(n > 1)
f = f2;
else
f = f1;
q = _ctlalignpoint(r, stringnwidth(f, kp, n), f->height, Acenter);
_string(im, q, k->textcolor->image,
ZP, f, kp, nil, n, r,
nil, ZP, SoverD);
x = r.max.x;
if(kp[n+1])
draw(im, Rect(x, r.min.y, x+1, r.max.y),
k->textcolor->image, nil, ZP);
}
if(row != Nrow-1)
draw(im, Rect(p.x, r.max.y, p.x+dx, r.max.y+1),
k->textcolor->image, nil, ZP);
}
}
static void
keyresize(Keyboard *k)
{
int i;
for(i=0; i<Nstate; i++)
keydraw(k, i);
}
static void
keyboardshow(Keyboard *k)
{
Rectangle r;
if (k->hidden)
return;
if(k->im[0]==nil || !eqrect(k->im[0]->r, k->rect))
keyresize(k);
if(k->im[k->state&SMask] == nil)
return;
draw(k->screen, k->rect, k->im[k->state&SMask], nil, k->rect.min);
if(k->state & SShift){
r = keyrect(k, 3, 0);
draw(k->screen, r, k->light->image, k->mask->image, ZP);
r = keyrect(k, 3, 11);
draw(k->screen, r, k->light->image, k->mask->image, ZP);
}
if(k->state & SCaps){
r = keyrect(k, 2, 0);
draw(k->screen, r, k->light->image, k->mask->image, ZP);
}
if(k->state & SControl){
r = keyrect(k, 4, 0);
draw(k->screen, r, k->light->image, k->mask->image, ZP);
}
flushimage(display, 1);
}
static void
keydown(Keyboard *k, Point p)
{
int row, col;
Rectangle r;
char *s;
s = whichkey(k, p, &row, &col, &r);
if(s == k->key)
return;
keyboardshow(k);
if(s != nil)
draw(k->screen, r, k->light->image, k->mask->image, ZP);
flushimage(display, 1);
k->key = s;
}
static int
keylookup(char *s)
{
int i;
for(i=0; keytab[i].name; i++)
if(strcmp(s, keytab[i].name) == 0)
return keytab[i].val;
return s[0];
}
static void
keyup(Keyboard *k, Point p)
{
int row, col;
Rectangle r;
char *s;
int val;
s = whichkey(k, p, &row, &col, &r);
if(s == nil)
return;
val = keylookup(s);
if(k->state & SControl)
if(' '<val && val<0177)
val &= ~0x60;
if(strcmp(s, "Alt") == 0)
{;}
if(strcmp(s, "Ctrl") == 0){
k->state ^= SControl;
}else
k->state &= ~SControl;
if(strcmp(s, "Shift")==0 || strcmp(s, "Caps")==0){
if(strcmp(s, "Shift") == 0)
k->state ^= SShift;
if(strcmp(s, "Caps") == 0)
k->state ^= SCaps;
}else
k->state &= ~SShift;
keyboardshow(k);
if(val)
chanprint(k->event, k->format, k->name, val);
k->key = nil;
}
static void
keyboardctl(Control *c, CParse *cp)
{
int cmd;
Rectangle r;
Keyboard *k;
k = (Keyboard*)c;
cmd = _ctllookup(cp->args[0], cmds, nelem(cmds));
switch(cmd){
default:
ctlerror("%q: unrecognized message '%s'", k->name, cp->str);
break;
case EBorder:
_ctlargcount(k, cp, 2);
if(cp->iargs[1] < 0)
ctlerror("%q: bad border: %c", k->name, cp->str);
k->border = cp->iargs[1];
break;
case EBordercolor:
_ctlargcount(k, cp, 2);
_setctlimage(k, &k->bordercolor, cp->args[1]);
break;
case EFocus:
/* ignore focus change */
break;
case EFont:
if(cp->nargs!=2 && cp->nargs!=3)
ctlerror("%q: bad font message '%s'", k->name, cp->str);
_setctlfont(k, &k->font, cp->args[1]);
if(cp->nargs == 3)
_setctlfont(k, &k->ctlfont, cp->args[2]);
else
_setctlfont(k, &k->ctlfont, cp->args[1]);
break;
case EFormat:
_ctlargcount(k, cp, 2);
k->format = ctlstrdup(cp->args[1]);
break;
case EHide:
_ctlargcount(k, cp, 1);
k->hidden = 1;
break;
case EImage:
_ctlargcount(k, cp, 2);
_setctlimage(k, &k->image, cp->args[1]);
break;
case ELight:
_ctlargcount(k, cp, 2);
_setctlimage(k, &k->light, cp->args[1]);
break;
case EMask:
_ctlargcount(k, cp, 2);
_setctlimage(k, &k->mask, cp->args[1]);
break;
case ERect:
_ctlargcount(k, cp, 5);
r.min.x = cp->iargs[1];
r.min.y = cp->iargs[2];
r.max.x = cp->iargs[3];
r.max.y = cp->iargs[4];
if(Dx(r)<0 || Dy(r)<0)
ctlerror("%q: bad rectangle: %s", k->name, cp->str);
k->rect = r;
keyboardshow(k);
break;
case EReveal:
_ctlargcount(k, cp, 1);
k->hidden = 0;
keyboardshow(k);
break;
case EShow:
_ctlargcount(k, cp, 1);
keyboardshow(k);
break;
case ESize:
if (cp->nargs == 3)
r.max = Pt(0x7fffffff, 0x7fffffff);
else{
_ctlargcount(k, cp, 5);
r.max.x = cp->iargs[3];
r.max.y = cp->iargs[4];
}
r.min.x = cp->iargs[1];
r.min.y = cp->iargs[2];
if(r.min.x<=0 || r.min.y<=0 || r.max.x<=0 || r.max.y<=0 || r.max.x < r.min.x || r.max.y < r.min.y)
ctlerror("%q: bad sizes: %s", k->name, cp->str);
k->size.min = r.min;
k->size.max = r.max;
break;
}
}
Control*
createkeyboard(Controlset *cs, char *name)
{
Keyboard *k;
k = (Keyboard *)_createctl(cs, "keyboard", sizeof(Keyboard), name);
k->image = _getctlimage("white");
k->mask = _getctlimage("opaque");
k->light = _getctlimage("yellow");
k->bordercolor = _getctlimage("black");
k->textcolor = _getctlimage("black");
k->font = _getctlfont("font");
k->ctlfont = _getctlfont("font");
k->format = ctlstrdup("%q: value 0x%x");
k->border = 0;
k->lastbut = 0;
k->key = nil;
k->state = SRegular;
k->ctl = keyboardctl;
k->mouse = keyboardmouse;
k->exit = keyboardfree;
k->size = Rect(246, 2 + 5 * (k->font->font->height + 1), 512, 256);
return k;
}