From 8e3d23b921d9bbcb7c53017bacff8a3050a34b55 Mon Sep 17 00:00:00 2001
From: KatolaZ <katolaz@freaknet.org>
Date: Sat, 27 Jul 2019 06:57:12 +0100
Subject: reorganise code

---
 draw.c | 324 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 324 insertions(+)
 create mode 100644 draw.c

(limited to 'draw.c')

diff --git a/draw.c b/draw.c
new file mode 100644
index 0000000..9e20601
--- /dev/null
+++ b/draw.c
@@ -0,0 +1,324 @@
+#include <stdlib.h>
+
+#include "gramscii.h"
+#include "config.h"
+
+/*** drawing-related functions ***/
+
+/*** Lines and markers ***/
+
+void toggle_hline(){
+
+	cur_hl = (cur_hl + 1) % hlines_sz;
+	line_h = hlines[cur_hl];
+
+}
+
+void toggle_corner(){
+
+	cur_corn = (cur_corn + 1 ) % corners_sz;
+	corner = corners[cur_corn];
+
+}
+
+void toggle_vline(){
+
+	cur_vl = (cur_vl + 1) % vlines_sz;
+	line_v = vlines[cur_vl];
+
+}
+
+void toggle_st_mark(){
+
+	cur_start = (cur_start + 1 ) % stmarks_sz;
+	mark_st = st_marks[cur_start];
+}
+
+void toggle_end_mark(){
+
+	cur_end = (cur_end+ 1 ) % endmarks_sz;
+	mark_end = end_marks[cur_end];
+}
+
+int change_style(char c){
+	switch(c){
+		case '-':
+			toggle_hline();
+			break;
+		case '|':
+			toggle_vline();
+			break;
+		case '+':
+			toggle_corner();
+			break;
+		case '<':
+			toggle_st_mark();
+			break;
+		case '>':
+			toggle_end_mark();
+			break;
+		case '.':
+			reset_styles();
+			break;
+		default: 
+			return 0;
+	}
+	return c;
+}
+
+
+
+
+/*****  text, box, arrows  *****/
+
+void get_text(FILE *fc){
+	char c;
+	int orig_x = x;
+
+	redraw();
+	while((c=fgetc(fc))!=EOF && c != 27){
+		if(c=='\n'){
+			set_cur(BG);
+			y += 1;
+			x = orig_x;
+		}
+		else {
+			set_cur(c);
+			update_current();
+			modified = 1;
+			x += 1;
+			if (x >= WIDTH)
+				x = orig_x;
+		}
+		check_bound();
+		status_bar();
+		show_cursor();
+	}
+	mode=MOVE;
+}
+
+void draw_box(int x1, int y1, int fix){
+
+	int xmin, ymin, xmax, ymax;
+	int i;
+	void (*f)(int, int, char);
+
+	if (fix == FIX)
+		f = set_xy;
+	else
+		f = draw_xy;
+
+	xmin = MIN(x, x1);
+	xmax = MAX(x, x1);
+	ymin = MIN(y, y1);
+	ymax = MAX(y, y1);
+
+	for(i=xmin+1; i<=xmax; i++){
+		f(i, ymin, line_h);
+		f(i, ymax, line_h);
+	}
+	for(i=ymin+1; i<=ymax; i++){
+		f(xmin, i, line_v);
+		f(xmax, i, line_v);
+	}
+	f(xmin, ymin, corner);
+	f(xmin, ymax, corner);
+	f(xmax, ymin, corner);
+	f(xmax, ymax, corner);
+	show_cursor();
+}
+
+void get_box(FILE *fc){
+	char c;
+	int orig_x=x, orig_y=y;
+	redraw();
+	step = 1;
+	draw_box(x,y,NOFIX);
+	while((c=fgetc(fc))!=EOF && c != 27 && c!= 'b' && c != '\n'){
+		if (change_style(c))
+			goto update_box;
+		if (!move_around(c, fc)) 
+			continue;
+		check_bound();
+		redraw();
+		step = 1;
+update_box:
+		draw_box(orig_x, orig_y, NOFIX);
+		status_bar();
+		show_cursor();
+	}
+	if (c == 'b' || c == '\n'){
+		draw_box(orig_x, orig_y, FIX);
+		modified = 1;
+	}
+	redraw();
+	mode = MOVE;
+}
+
+void draw_arrow(int x, int y, char *a, int a_len, int fix){
+
+	int i, j, cur_dir;
+	char line;
+	void (*f)(int, int, char);
+
+
+	if (fix == FIX)
+		f = set_xy;
+	else
+		f = draw_xy;
+
+	f(x,y,mark_st);
+	if (!a_len){
+		show_cursor();
+		return;
+	}
+	cur_dir=DIR_N;
+	for (i=0; i<a_len; i+=2){
+		if (i>0) {
+			/* If we are switching between horizontal and vertical, put a "corner" */
+			if (((cur_dir & DIR_HOR) && (a[i] & DIR_VER)) ||
+			    ((cur_dir & DIR_VER) && (a[i] & DIR_HOR))){
+				f(x,y,corner);
+				show_cursor();
+			}
+		}
+		for(j=0; j<a[i+1]; j++){
+			line = (a[i] & DIR_L) || (a[i] & DIR_R) ? line_h : line_v;
+			x += progr_x(a[i]);
+			y += progr_y(a[i]);
+			f(x, y, line);
+		}
+		/* f(x,y,mark_end);*/
+		cur_dir = a[i];
+	}
+	if (autoend){
+		if (cur_dir != DIR_N)
+			f(x,y, get_mark(cur_dir));
+	}
+	else 
+		f(x,y,mark_end);
+	show_cursor();
+}
+
+void get_arrow(FILE *fc){
+
+	char c;
+	int orig_x=x, orig_y=y, arrow_len;
+	static char *arrow = NULL;
+	static int arrow_sz;
+
+	if (!arrow){
+		arrow_sz = 100;
+		arrow = malloc(arrow_sz * sizeof(char));
+	}
+	arrow_len = 0;
+	dir = DIR_N;
+
+	redraw();
+	step = 1;
+	draw_arrow(x,y, arrow, 0, NOFIX);
+	while((c=fgetc(fc))!=EOF && c != 27 && c!= 'a' && c != '\n'){
+		if (change_style(c))
+			goto update_arrow;
+		if (!move_around(c, fc))
+			continue;
+		check_bound();
+		/* FIXME: if we are out of bound, do nothing? */
+		if (arrow_len == arrow_sz){
+			arrow_sz *=2;
+			arrow = realloc(arrow, arrow_sz * sizeof(char));
+		}
+		arrow[arrow_len++] = dir;
+		arrow[arrow_len++] = step;
+		redraw();
+		step = 1;
+update_arrow:
+		draw_arrow(orig_x, orig_y, arrow, arrow_len, NOFIX);
+		status_bar();
+		show_cursor();
+	}
+	if (c == 'a' || c == '\n'){
+		draw_arrow(orig_x, orig_y, arrow, arrow_len, FIX);
+		modified = 1;
+	}
+	redraw();
+	mode = MOVE;
+}
+
+
+void do_erase(int x1, int y1){
+	int i;
+	switch(dir){
+		case DIR_R:
+			for(i=x1; i<=x; i++) set_xy(i,y,BG);
+			break;
+		case DIR_L:
+			for(i=x1; i>=x; i--) set_xy(i,y,BG);
+			break;
+		case DIR_U:
+			for(i=y1; i>=y; i--) set_xy(x,i,BG);
+			break;
+		case DIR_D:
+			for(i=y1; i<=y; i++) set_xy(x,i,BG);
+			break;
+	}
+}
+
+
+void erase(FILE *fc){
+	char c;
+	int orig_x = x, orig_y = y;
+	status_bar();
+	show_cursor();
+	while((c=fgetc(fc))!=EOF && c!=27 && c!= 'x' && c != '\n'){
+		if (!move_around(c, fc)) continue;
+		check_bound();
+		do_erase(orig_x, orig_y);
+		step = 1;
+		modified = 1;
+		orig_x = x;
+		orig_y = y;
+		redraw();
+		status_bar();
+		show_cursor();
+	}
+	mode = MOVE;
+}
+
+
+/*** Visual ***/
+
+
+void visual_box(FILE *fc){
+	int orig_x =x, orig_y = y;
+	char c, f = BG;
+
+	redraw();
+	step = 1;
+	set_video(VIDEO_REV);
+	draw_box(x,y,NOFIX);
+	while((c=fgetc(fc))!=EOF && c != 27 && c!= 'v' && c != '\n'){
+		if (!move_around(c, fc)) switch(c){
+			case 'f':/* fill */
+				f = get_key(fc, "fill char: "); /** FALLTHROUGH **/
+			case 'x':/* erase */
+				erase_box(orig_x, orig_y, f);
+				modified = 1;
+				goto vis_exit;
+				break;
+		} 
+		check_bound();
+		set_video(VIDEO_NRM);
+		redraw();
+		step = 1;
+		f = BG;
+		set_video(VIDEO_REV);
+		draw_box(orig_x, orig_y, NOFIX);
+		status_bar();
+		show_cursor();
+	}
+vis_exit:
+	set_video(VIDEO_NRM);
+	redraw();
+	mode = MOVE;
+}
-- 
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