ref: 819bec22ccf01927c8d31e9bbcddca91b5ed41ee
parent: b68b3a6e19eb57c9f1c8b70b624f103254f4964a
author: Ori Bernstein <ori@eigenstate.org>
date: Sat Jun 26 13:39:13 EDT 2021
vt: allow scrolling with the mouse.
--- a/sys/src/cmd/vt/cons.h
+++ b/sys/src/cmd/vt/cons.h
@@ -54,7 +54,7 @@
extern int number(Rune *, int *);
extern void shift(int,int,int,int);
extern void scroll(int,int,int,int);
-extern int backup(int);
+extern void backup(int);
extern void sendnchars(int, char *);
extern Point pt(int, int);
extern Point pos(Point);
--- a/sys/src/cmd/vt/main.c
+++ b/sys/src/cmd/vt/main.c
@@ -134,9 +134,7 @@
Rune kbdchar;
-#define button1() ((mc->buttons & 07)==1)
-#define button2() ((mc->buttons & 07)==2)
-#define button3() ((mc->buttons & 07)==4)
+#define button(num) (mc->buttons == (1<<((num)-1)))
Mousectl *mc;
Keyboardctl *kc;
@@ -835,10 +833,14 @@
flushimage(display, 1);
switch(alt(a)){case AMOUSE:
- if(button1() || chording)
+ if(button(1) || chording)
selecting();
- else if(button2() || button3())
+ else if(button(2) || button(3))
readmenu();
+ else if(button(4))
+ backup(backc+1);
+ else if(button(5) && backc > 0)
+ backup(--backc);
else if(resize_flag == 0)
goto Next;
break;
@@ -1130,7 +1132,7 @@
select(p, q, mode);
drawscreen();
readmouse(mc);
- } while(button1());
+ } while(button(1));
}
if(mc->buttons != chording){ switch(mc->buttons & 0x7){@@ -1169,7 +1171,7 @@
Point p;
p = pos(mc->xy);
- if(button3()) {+ if(button(3)) {menu3.item[1] = ttystate[cs->raw].crnl ? "cr" : "crnl";
menu3.item[2] = ttystate[cs->raw].nlcr ? "nl" : "nlcr";
menu3.item[3] = cs->raw ? "cooked" : "raw";
@@ -1203,8 +1205,7 @@
switch(menuhit(2, mc, &menu2, nil)) {case Mbackup: /* back up */
- if(backup(backc+1))
- backc++;
+ backup(backc+1);
return;
case Mforward: /* move forward */
@@ -1239,7 +1240,7 @@
}
}
-int
+void
backup(int count)
{Rune *cp;
@@ -1272,7 +1273,8 @@
if(cp >= &hist[HISTSIZ])
cp = hist;
backp = cp;
- return left;
+ if(left)
+ backc = count;
}
Point