quickcancel patch

config.def.h

@@ -13,6 +13,9 @@ static const char *colorname[NUMCOLS] = {
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
 
+/* time in seconds to cancel lock with mouse movement */
+static const int timetocancel = 4;
+
 static const int logosize = 75;
 static const int logow = 12; /* Grid width and height for right center alignment*/
 static const int logoh = 6;

patches/slock-quickcancel-1.4.diff

@@ -0,0 +1,66 @@
+From e37f8981efe54bc620cb2f2280832cdab3959a32 Mon Sep 17 00:00:00 2001
+From: aleks <aleks.stier@icloud.com>
+Date: Thu, 10 Oct 2019 17:35:27 +0200
+Subject: [PATCH] Apply quickcancel
+
+Cancel slock by moving the mouse within a certain time-period after
+slock started. The time-period can be defined in seconds with the
+setting *timetocancel* in the config.h. This is useful if you forgot to
+disable `xautolock` during an activity that requires no input (e.g.
+reading text, watching video).
+---
+ config.def.h | 3 +++
+ slock.c      | 5 +++++
+ 2 files changed, 8 insertions(+)
+
+diff --git a/config.def.h b/config.def.h
+index 9855e21..e0bf95a 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -10,3 +10,6 @@ static const char *colorname[NUMCOLS] = {
+ 
+ /* treat a cleared input like a wrong password (color) */
+ static const int failonclear = 1;
++
++/* time in seconds to cancel lock with mouse movement */
++static const int timetocancel = 4;
+diff --git a/slock.c b/slock.c
+index d2f0886..f7462ee 100644
+--- a/slock.c
++++ b/slock.c
+@@ -13,6 +13,7 @@
+ #include <stdio.h>
+ #include <string.h>
+ #include <unistd.h>
++#include <time.h>
+ #include <sys/types.h>
+ #include <X11/extensions/Xrandr.h>
+ #include <X11/keysym.h>
+@@ -24,6 +25,8 @@
+ 
+ char *argv0;
+ 
++static time_t locktime;
++
+ enum {
+ 	INIT,
+ 	INPUT,
+@@ -141,6 +144,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
+ 	oldc = INIT;
+ 
+ 	while (running && !XNextEvent(dpy, &ev)) {
++		running = !((time(NULL) - locktime < timetocancel) && (ev.type == MotionNotify));
+ 		if (ev.type == KeyPress) {
+ 			explicit_bzero(&buf, sizeof(buf));
+ 			num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
+@@ -268,6 +272,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
+ 				XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
+ 
+ 			XSelectInput(dpy, lock->root, SubstructureNotifyMask);
++			locktime = time(NULL);
+ 			return lock;
+ 		}
+ 
+-- 
+2.23.0
+

slock.c

@@ -15,6 +15,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#include <time.h>
 #include <sys/types.h>
 #include <X11/extensions/Xrandr.h>
 #ifdef XINERAMA
@@ -33,6 +34,8 @@
 
 char *argv0;
 
+static time_t locktime;
+
 enum {
     BACKGROUND,
 	INIT,
@@ -200,6 +203,7 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 		caps = indicators & 1;
 
 	while (running && !XNextEvent(dpy, &ev)) {
+		running = !((time(NULL) - locktime < timetocancel) && (ev.type == MotionNotify));
 		if (ev.type == KeyPress) {
 			explicit_bzero(&buf, sizeof(buf));
 			num = XLookupString(&ev.xkey, buf, sizeof(buf), &ksym, 0);
@@ -390,6 +394,7 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
 				XRRSelectInput(dpy, lock->win, RRScreenChangeNotifyMask);
 
 			XSelectInput(dpy, lock->root, SubstructureNotifyMask);
+			locktime = time(NULL);
 			drawlogo(dpy, lock, INIT);
 			return lock;
 		}