commit 1811b6030cd9ac6bb938449eef778c6f54ab0e49
from: noname <noname@inventati.org>
via: Roberto E. Vargas Caballero <k0ga@shike2.com>
date: Mon May  4 09:57:17 2015 UTC

Add enumeration for sel.mode

This patch also prevents sel.mode from increasing beyond 2. It is almost
impossible, but sel.mode may overflow if mouse is moved around for too
long while selecting.

commit - 22571ea4e8729efee6940b704666566b46e42e76
commit + 1811b6030cd9ac6bb938449eef778c6f54ab0e49
blob - 61388177c25b58d47995b023d4f981a7d7e58e31
blob + d6dd4dee5b04ef5591d7346da42e086c4aea77fd
--- st.c
+++ st.c
@@ -162,6 +162,12 @@ enum window_state {
 	WIN_FOCUSED = 2
 };
 
+enum selection_mode {
+	SEL_IDLE = 0,
+	SEL_EMPTY = 1,
+	SEL_READY = 2
+};
+
 enum selection_type {
 	SEL_REGULAR = 1,
 	SEL_RECTANGULAR = 2
@@ -643,7 +649,7 @@ void
 selinit(void) {
 	memset(&sel.tclick1, 0, sizeof(sel.tclick1));
 	memset(&sel.tclick2, 0, sizeof(sel.tclick2));
-	sel.mode = 0;
+	sel.mode = SEL_IDLE;
 	sel.ob.x = -1;
 	sel.primary = NULL;
 	sel.clipboard = NULL;
@@ -897,7 +903,7 @@ bpress(XEvent *e) {
 
 		/* Clear previous selection, logically and visually. */
 		selclear(NULL);
-		sel.mode = 1;
+		sel.mode = SEL_EMPTY;
 		sel.type = SEL_REGULAR;
 		sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
 		sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
@@ -920,7 +926,7 @@ bpress(XEvent *e) {
 		 * make clicks visible
 		 */
 		if(sel.snap != 0) {
-			sel.mode++;
+			sel.mode = SEL_READY;
 			tsetdirt(sel.nb.y, sel.ne.y);
 		}
 		sel.tclick2 = sel.tclick1;
@@ -1142,13 +1148,12 @@ brelease(XEvent *e) {
 	if(e->xbutton.button == Button2) {
 		selpaste(NULL);
 	} else if(e->xbutton.button == Button1) {
-		if(sel.mode < 2) {
-			selclear(NULL);
-		} else {
+		if(sel.mode == SEL_READY) {
 			getbuttoninfo(e);
 			selcopy(e->xbutton.time);
-		}
-		sel.mode = 0;
+		} else
+			selclear(NULL);
+		sel.mode = SEL_IDLE;
 		tsetdirt(sel.nb.y, sel.ne.y);
 	}
 }
@@ -1165,7 +1170,7 @@ bmotion(XEvent *e) {
 	if(!sel.mode)
 		return;
 
-	sel.mode++;
+	sel.mode = SEL_READY;
 	oldey = sel.oe.y;
 	oldex = sel.oe.x;
 	oldsby = sel.nb.y;