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add support for mouse scrolling (#26)

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This commit is contained in:
phillbush 2021-02-13 20:36:55 -03:00
parent 88341d204b
commit 60ddf397e3
3 changed files with 66 additions and 29 deletions
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1
xmenu.1
View File

@ -190,7 +190,6 @@ or
.BR "\(dqright\(dq" ,
text is aligned to the left, center, or right of the menu, respectively.
By default, text is aligned to the left.
.SH EXAMPLES
The following script illustrates the use of
.BR xmenu .

43
xmenu.c
View File

@ -1129,17 +1129,37 @@ itemcycle(struct Menu *currmenu, int direction)
return item;
}
/* check if button is used to scroll */
static int
isscrollbutton(unsigned int button)
{
if (button == Button4 || button == Button5)
return 1;
return 0;
}
/* check if button is used to open a item on click */
static int
isclickbutton(unsigned int button)
{
if (button == Button1)
if (button == Button1 || button == Button2)
return 1;
if (!rflag && button == Button3)
return 1;
return 0;
}
/* warp pointer to center of selected item */
static void
warppointer(struct Menu *menu, struct Item *item)
{
if (menu == NULL || item == NULL)
return;
if (menu->selected) {
XWarpPointer(dpy, None, menu->win, 0, 0, 0, 0, menu->w / 2, item->y + item->h / 2);
}
}
/* append buf into text */
static int
append(char *text, char *buf, size_t textsize, size_t buflen)
@ -1240,6 +1260,7 @@ run(struct Menu *currmenu)
KeySym ksym;
Status status;
XEvent ev;
int warped = 0;
int action;
int len;
int i;
@ -1256,6 +1277,7 @@ run(struct Menu *currmenu)
action = ACTION_DRAW;
break;
case MotionNotify:
if (!warped) {
menu = getmenu(currmenu, ev.xbutton.window);
item = getitem(menu, ev.xbutton.y);
if (menu == NULL || item == NULL || previtem == item)
@ -1269,10 +1291,17 @@ run(struct Menu *currmenu)
currmenu = menu;
}
action = ACTION_CLEAR | ACTION_SELECT | ACTION_MAP | ACTION_DRAW;
}
warped = 0;
break;
case ButtonRelease:
if (!isclickbutton(ev.xbutton.button))
break;
if (isscrollbutton(ev.xbutton.button)) {
if (ev.xbutton.button == Button4)
select = itemcycle(currmenu, ITEMPREV);
else
select = itemcycle(currmenu, ITEMNEXT);
action = ACTION_CLEAR | ACTION_SELECT | ACTION_DRAW | ACTION_WARP;
} else if (isclickbutton(ev.xbutton.button)) {
menu = getmenu(currmenu, ev.xbutton.window);
item = getitem(menu, ev.xbutton.y);
if (menu == NULL || item == NULL)
@ -1288,6 +1317,10 @@ enteritem:
}
select = currmenu->list;
action = ACTION_CLEAR | ACTION_SELECT | ACTION_MAP | ACTION_DRAW;
if (ev.xbutton.button == Button2) {
action |= ACTION_WARP;
}
}
break;
case ButtonPress:
menu = getmenu(currmenu, ev.xbutton.window);
@ -1419,6 +1452,10 @@ append:
mapmenu(currmenu);
if (action & ACTION_DRAW)
drawmenus(currmenu);
if (action & ACTION_WARP) {
warppointer(currmenu, select);
warped = 1;
}
}
}

1
xmenu.h
View File

@ -6,6 +6,7 @@
#define ACTION_SELECT 1<<1 /* select item */
#define ACTION_MAP 1<<2 /* remap menu windows */
#define ACTION_DRAW 1<<3 /* redraw menu windows */
#define ACTION_WARP 1<<4 /* warp the pointer */
/* enum for keyboard menu navigation */
enum { ITEMPREV, ITEMNEXT, ITEMFIRST, ITEMLAST };