From c9a6b0faecb76984eb51754f6d188a87be025e8f Mon Sep 17 00:00:00 2001
From: KatolaZ <katolaz@freaknet.org>
Date: Mon, 22 Jul 2019 17:05:57 +0100
Subject: initial commit of dynamic screen size

---
 gramscii.c | 50 ++++++++++++++++++++++++++++++++------------------
 1 file changed, 32 insertions(+), 18 deletions(-)

diff --git a/gramscii.c b/gramscii.c
index 5e5a9b1..1223a76 100644
--- a/gramscii.c
+++ b/gramscii.c
@@ -10,6 +10,7 @@
 #include <unistd.h>
 #include <signal.h>
 #include <string.h>
+#include <sys/ioctl.h>
 
 #define MOVE   0x00
 #define BOX    0x01
@@ -27,8 +28,6 @@
 #define DIR_HOR (DIR_R | DIR_L)
 #define DIR_VER (DIR_D | DIR_U)
 
-#define WIDTH  100
-#define HEIGHT  25
 
 #define NOFIX 0x0
 #define FIX   0x1
@@ -52,7 +51,8 @@
 #define MIN(x,y)  (x) < (y) ? (x) : (y)
 #define MAX(x,y)  (x) > (y) ? (x) : (y)
 
-char screen[HEIGHT][WIDTH+1];
+char **screen;
+int WIDTH, HEIGHT;
 
 int state;
 int dir;
@@ -121,7 +121,7 @@ char* state_str(){
 void status_bar(){
 
 	printf("\033[%d;1f\033[7m", HEIGHT+1);
-	printf("%100s", " ");
+	printf("%*s", WIDTH-1, "");
 	printf("\033[%d;1f\033[7m", HEIGHT+1);
 	printf(" x:%3d y:%3d -- MODE:%4s HL:%c VL:%c CN:%c SP:%c EP:%c %10s",
 		x, y, state_str(), line_h, line_v, corner, mark_st, mark_end, "");
@@ -132,12 +132,12 @@ void status_bar(){
 	printf("\033[0m");
 }
 
-char get_key(char *s){
+char get_key(char *msg){
 
 	printf("\033[%d;1f\033[7m", HEIGHT+1);
-	printf("%100s", " ");
+	printf("%*s", WIDTH, "");
 	printf("\033[%d;1f\033[7m", HEIGHT+1);
-	printf("%s ", s);
+	printf("%s", msg);
 	printf("\033[0m");
 	return getchar();
 }
@@ -145,7 +145,7 @@ char get_key(char *s){
 void get_string(char *msg, char *s, int sz){
 
 	printf("\033[%d;1f\033[7m", HEIGHT+1);
-	printf("%100s", " ");
+	printf("%*s", WIDTH, "");
 	printf("\033[%d;1f\033[7m", HEIGHT+1);
 	/* We must activate echo now */
 	t3 = t2;
@@ -235,14 +235,6 @@ void reset_styles(){
 
 }
 
-void init_screen(){
-	int i;
-	for(i=0; i<HEIGHT; i++){
-		memset(screen[i], ' ', WIDTH);
-		screen[i][WIDTH]='\0';
-	}
-	reset_styles();
-}
 
 void redraw(){
 	int i;
@@ -738,6 +730,28 @@ vis_exit:
 
 /*** Initialisation ***/
 
+void init_screen(){
+	int i;
+	struct winsize wsz;
+	
+	if (!ioctl(STDIN_FILENO, TIOCGWINSZ, &wsz)){
+		WIDTH=wsz.ws_col;
+		HEIGHT=wsz.ws_row - 1;
+	}
+	else {
+		WIDTH=8;
+		HEIGHT=24;
+	}
+	screen = malloc(HEIGHT * sizeof(char *));
+	for (i=0; i<HEIGHT; i++){
+		screen[i] = malloc((WIDTH+1) * sizeof(char));
+		memset(screen[i], 32, WIDTH);
+		screen[WIDTH]='\0';
+	}
+	reset_styles();
+}
+
+
 void init(){
 
 	signal(SIGHUP, cleanup);
@@ -751,8 +765,8 @@ void init(){
 	tcsetattr(0, TCSANOW, &t2);
 
 	init_screen();
-	x = WIDTH/2;
-	y = HEIGHT/2;
+	x = 0;
+	y = 0;
 	modified = 0;
 	fname[0] = '\0';
 	redraw();
-- 
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