ref: 0e42cb569f2f7221933ccf8e78d5d57896734f40
parent: 4b9f1339df55862987166240d2e58ad1626c9963
author: phil9 <telephil9@gmail.com>
date: Wed May 1 12:45:50 EDT 2024
switch to libthread instead of libevent
--- a/vcrop.c
+++ b/vcrop.c
@@ -1,7 +1,8 @@
#include <u.h>
#include <libc.h>
+#include <thread.h>
#include <draw.h>
-#include <event.h>
+#include <mouse.h>
#include <keyboard.h>
enum
@@ -9,6 +10,15 @@
Threshold = 5,
};
+enum
+{+ Emouse,
+ Eresize,
+ Ekeyboard,
+};
+
+Mousectl *mctl;
+Keyboardctl *kctl;
Image *bg;
Image *p;
Image *n;
@@ -18,12 +28,11 @@
Menu menu = { menustr };void
-eresized(int new)
+redraw(void)
{- if(new && getwindow(display, Refnone)<0)
- sysfatal("cannot reattach: %r");draw(screen, screen->r, bg, nil, ZP);
draw(screen, rectaddpt(n->r, addpt(pos, screen->r.min)), n, nil, n->r.min);
+ flushimage(display, 1);
}
void
@@ -38,16 +47,17 @@
nr = rectaddpt(r, d);
draw(screen, screen->r, bg, nil, ZP);
draw(screen, nr, n, nil, n->r.min);
+ flushimage(display, 1);
}
void
-crop(Mouse *m)
+crop(void)
{Rectangle r;
Point o;
Image *i;
- r = egetrect(1, m);
+ r = getrect(1, mctl);
if(eqrect(r, ZR) || badrect(r) || (Dx(r)<Threshold && Dy(r)<Threshold))
return;
o = subpt(r.min, screen->r.min);
@@ -68,17 +78,17 @@
n = i;
oldpos = pos;
pos = subpt(ZP, n->r.min);
- eresized(0);
+ redraw();
}
void
-save(Mouse *m)
+save(void)
{- char buf[255];
+ char buf[4096] = {0};int i, fd;
- i = eenter("Save as:", buf, sizeof buf, m);- if(i<0)
+ i = enter("Save as:", buf, sizeof buf, mctl, kctl, nil);+ if(i<=0)
return;
fd = create(buf, OWRITE, 0644);
if(fd<0)
@@ -98,28 +108,27 @@
n = p;
p = nil;
pos = oldpos;
- eresized(0);
+ redraw();
}
void
-menu3hit(Mouse *m)
+menu3hit(void)
{int i;
- i = emenuhit(3, m, &menu);
+ i = menuhit(3, mctl, &menu, nil);
switch(i){case Mcrop:
- m->buttons = 1;
- crop(m);
+ crop();
break;
case Mundo:
undo();
break;
case Msave:
- save(m);
+ save();
break;
case Mexit:
- exits(nil);
+ threadexitsall(nil);
}
}
@@ -126,17 +135,23 @@
void
usage(char *n)
{- fprint(2, "usage: %s [image]\n", n);
+ fprint(2, "usage: %s <[image]>\n", n);
exits("usage");}
void
-main(int argc, char *argv[])
+threadmain(int argc, char *argv[])
{- Event ev;
Mouse m;
+ Rune k;
Point o;
- int e, fd;
+ int fd;
+ Alt a[] = {+ { nil, &m, CHANRCV },+ { nil, nil, CHANRCV },+ { nil, &k, CHANRCV },+ { nil, nil, CHANEND },+ };
if(argc > 2)
usage(argv[0]);
@@ -148,7 +163,14 @@
}
if(initdraw(nil, nil, "vcrop")<0)
sysfatal("initdraw: %r");- einit(Emouse|Ekeyboard);
+ display->locking = 0;
+ if((mctl = initmouse(nil, screen)) == nil)
+ sysfatal("initmouse: %r");+ if((kctl = initkeyboard(nil)) == nil)
+ sysfatal("initkeyboard: %r");+ a[Emouse].c = mctl->c;
+ a[Eresize].c = mctl->resizec;
+ a[Ekeyboard].c = kctl->c;
bg = allocimage(display, Rect(0,0,1,1), screen->chan, 1, 0xCCCCCCFF);
n = readimage(display, fd, 0);
if(n==nil)
@@ -157,29 +179,33 @@
p = nil;
pos = subpt(ZP, n->r.min);
oldpos = pos;
- eresized(0);
+ redraw();
for(;;){- e = event(&ev);
- switch(e){+ switch(alt(a)){case Emouse:
- if(ev.mouse.buttons==1){- m = ev.mouse;
+ if(m.buttons==1){ for(;;) {o = m.xy;
- m = emouse();
- if((m.buttons & 1) == 0)
+ if(!readmouse(mctl))
break;
- translate(subpt(m.xy, o));
+ if((mctl->buttons & 1) == 0)
+ break;
+ translate(subpt(mctl->xy, o));
}
- }else if(ev.mouse.buttons==2){- ev.mouse.buttons = 1;
- crop(&ev.mouse);
- }else if(ev.mouse.buttons==4)
- menu3hit(&ev.mouse);
+ }else if(m.buttons==2){+ mctl->buttons = 1;
+ crop();
+ }else if(m.buttons==4)
+ menu3hit();
break;
+ case Eresize:
+ if(getwindow(display, Refnone)<0)
+ sysfatal("cannot reattach: %r");+ redraw();
+ break;
case Ekeyboard:
- if(ev.kbdc==Kdel)
- exits(nil);
+ if(k==Kdel)
+ threadexitsall(nil);
break;
}
}