ref: 5fbdddcb81fff06be473bddc64748ac0fb86edba
parent: b1ebc6412e1b0e40fc4ee2f6c3c67428a3e1480f
author: Sigrid Haflínudóttir <ftrvxmtrx@gmail.com>
date: Thu Feb 13 18:56:03 EST 2020
plan9: handle grid resizing and make field snap to grid when resizing
--- a/plan9.c
+++ b/plan9.c
@@ -450,6 +450,22 @@
}
}
+static int
+snaplow(int n, int gridn)
+{+ n--;
+ n -= (n % gridn) > 0 ? (n % gridn) : gridn;
+ return MAX(1, n+1);
+}
+
+static int
+snaphigh(int n, int gridn)
+{+ n += gridn;
+ n -= n % gridn - 1;
+ return n;
+}
+
static void
screensize(int *w, int *h)
{@@ -717,17 +733,29 @@
case 0x16: /* C-v */
selpaste();
break;
+ case '[':
+ gridw = MAX(4, gridw-1);
+ break;
+ case ']':
+ gridw = MIN(16, gridw+1);
+ break;
+ case '{':+ gridh = MAX(4, gridh-1);
+ break;
+ case '}':
+ gridh = MIN(16, gridh+1);
+ break;
case '(':- w = MAX(1, w-gridw);
+ w = snaplow(w, gridw);
break;
case ')':
- w += gridw;
+ w = snaphigh(w, gridw);
break;
case '_':
- h = MAX(1, h-gridh);
+ h = snaplow(h, gridh);
break;
case '+':
- h += gridh;
+ h = snaphigh(h, gridh);
break;
case '>':
bpm++;