From 088c769de46c4c1540c96c8b48bf17e3b093e0f6 Mon Sep 17 00:00:00 2001
From: "B. Watson" <urchlay@slackware.uk>
Date: Wed, 10 Jan 2024 12:54:54 -0500
Subject: Switch window sizes without re-executing (leaks a bit though).

---
 hcalc.h  |  1 +
 images.c |  5 +++++
 input.c  | 44 +++++++++++---------------------------------
 3 files changed, 17 insertions(+), 33 deletions(-)

diff --git a/hcalc.h b/hcalc.h
index 62a5593..f04d0a9 100644
--- a/hcalc.h
+++ b/hcalc.h
@@ -53,6 +53,7 @@ void button(int b, int x, int y);
 void complete_paste(unsigned char *s, int n);
 void send_current_display(void);
 void setup_x(void);
+void free_pixmaps(void);
 void load_pixmaps(void);
 void process_input();
 void load_config(void);
diff --git a/images.c b/images.c
index 1ed80d3..e8ca33f 100644
--- a/images.c
+++ b/images.c
@@ -38,6 +38,11 @@ Pixmap chars;
 char charmap[] = " 0123456789ABCDEF-x,.ro+";
 int char_to_x[256];
 
+void free_pixmaps(void) {
+	if(face) XFreePixmap(display, face);
+	if(chars) XFreePixmap(display, chars);
+}
+
 void load_pixmaps(void) {
 	int i, c;
 
diff --git a/input.c b/input.c
index 53e816d..ba15f07 100644
--- a/input.c
+++ b/input.c
@@ -430,49 +430,27 @@ void key(char c) {
 			exit(0);
 
 		case 'z':
-			{
-				/* dirty hack method of changing window size:
-				   re-execute ourselves with appropriate argument.
-				   TODO: see if this leaks memory, fds, etc */
-				extern char *self;
-				char *args[4];
-
-				args[0] = self;
-
-				switch (winsize) {
-					case 0:
-						args[1] = "-medium";
-						break;
-					case 1:
-						args[1] = "-large";
-						break;
-					case 2:
-						args[1] = "-small";
-						break;
-				}
-
-				args[2] = NULL;
-
-				/* note that atexit() functions do NOT get called on execv() */
-				save_config();
-
-				XCloseDisplay(display);
-
-				execv(self, args);
-			}
+			winsize++;
+			if(winsize == 3) winsize = 0;
+			free_pixmaps();
+			XCloseDisplay(display);
+			setup_x();
+			load_pixmaps();
+			show_value();
+			break;
 	}
 }
 
 static char *bmap[] = {
-	"PPPP\033",					/* mouse copy and paste, CLR    */
-	"DHOB\010",					/* DEC, HEX, OCT, BIN, DEL  */
+	"PPPP\033",				/* mouse copy and paste, CLR    */
+	"DHOB\010",				/* DEC, HEX, OCT, BIN, DEL  */
 	"[]}<>",					/* STO, RCL, SUM, <<, >>    */
 	"Sdef/",					/* SHF, D    E    F   /     */
 	"~abc*",					/* INV,             */
 	"|789-",					/* OR,              */
 	"&456+",					/* AND,             */
 	"^123=",					/* XOR,             */
-	"u0._="						/* CE, 0,  . , +/-, =       */
+	"u0._="					/* CE, 0,  . , +/-, =       */
 };
 
 void copy(void) {
-- 
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