plan9fox/libpanel/scrltest.c
xfnw 856abd2f7d Squashed 'sys/src/cmd/gopher/' content from commit 3680728b6
git-subtree-dir: sys/src/cmd/gopher
git-subtree-split: 3680728b631ed65201b397f4ae3e5d1b03be42f9
2022-07-01 15:46:23 -04:00

65 lines
1.5 KiB
C

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include <panel.h>
Panel *root, *list;
char *genlist(Panel *, int which){
static char buf[7];
if(which<0 || 26<=which) return 0;
sprint(buf, "item %c", which+'a');
return buf;
}
void hitgen(Panel *p, int buttons, int sel){
USED(p, buttons, sel);
}
void ereshaped(Rectangle r){
screen.r=r;
r=inset(r, 4);
plpack(root, r);
bitblt(&screen, screen.r.min, &screen, screen.r, Zero);
pldraw(root, &screen);
}
void done(Panel *p, int buttons){
USED(p, buttons);
bitblt(&screen, screen.r.min, &screen, screen.r, Zero);
exits(0);
}
Panel *msg;
void message(char *s, ...){
char buf[1024], *out;
va_list arg;
va_start(arg, s);
out = doprint(buf, buf+sizeof(buf), s, arg);
va_end(arg);
*out='\0';
plinitlabel(msg, PACKN|FILLX, buf);
pldraw(msg, &screen);
}
Scroll s;
void save(Panel *p, int buttons){
USED(p, buttons);
s=plgetscroll(list);
message("save %d %d %d %d", s);
}
void revert(Panel *p, int buttons){
USED(p, buttons);
plsetscroll(list, s, &screen);
message("revert %d %d %d %d", s);
}
void main(void){
Panel *g;
binit(0,0,0);
einit(Emouse);
plinit(screen.ldepth);
root=plgroup(0, 0);
g=plgroup(root, PACKN|EXPAND);
list=pllist(g, PACKE|EXPAND, genlist, 8, hitgen);
plscroll(list, 0, plscrollbar(g, PACKW));
msg=pllabel(root, PACKN|FILLX, "");
plbutton(root, PACKW, "save", save);
plbutton(root, PACKW, "revert", revert);
plbutton(root, PACKE, "done", done);
ereshaped(screen.r);
for(;;) plmouse(root, emouse(), &screen);
}