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	visual mode (erase and fill) - gramscii - A simple editor for ASCII box-and-arr…
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	---
	commit d87cf8ea7ec68de924179eb1dbaa13f4b52bd1aa
	parent c8512825e3baf1525af7117affa13d00ac6b0d1d
	Author: KatolaZ <[email protected]>
	Date: Sat, 20 Jul 2019 14:47:12 +0100

	visual mode (erase and fill)

	Diffstat:
	M TODO \| 7 ++++---
	M gramscii.c \| 66 +++++++++++++++++++++++++++++…

	2 files changed, 70 insertions(+), 3 deletions(-)
	---
	diff --git a/TODO b/TODO
	@@ -2,11 +2,12 @@
	- (?) change cursor shape according to action
	- auto-arrow 'A' (automatic end-char)
	- read file at point
	-- visual selection
	++ visual selection
	- crop
	- - fill
	- - delete
	- yank/put
	+ * fill
	+ * delete
	+- change screen management (i.e., use an array of lines)
	- undo (by storing lines changed across insert/remove operations)
	- manage special chars (DEL/CANC) during text insert
	(also do not print unmanaged chars!)
	diff --git a/gramscii.c b/gramscii.c
	@@ -16,6 +16,7 @@
	#define ARROW 0x02
	#define TEXT 0x04
	#define DEL 0x08
	+#define VIS 0x10

	#define DIR_N 0x00
	#define DIR_R 0x01
	@@ -45,6 +46,9 @@
	#define END 0x02
	#define MIDDLE 0x04

	+#define VIDEO_NRM 0
	+#define VIDEO_REV 7
	+
	#define MIN(x,y) (x) < (y) ? (x) : (y)
	#define MAX(x,y) (x) > (y) ? (x) : (y)

	@@ -188,6 +192,21 @@ void erase_line(char *s){
	}
	}

	+void erase_box(int x1, int y1, char c){
	+
	+ int x_incr, y_incr, i;
	+
	+ x_incr = x1 < x? +1: -1;
	+ y_incr = y1 < y? +1: -1;
	+ do{
	+ i = y1;
	+ do{
	+ set_xy(x1, i, c);
	+ } while(i != y && (1 \| (i += y_incr)));
	+ } while(x1 != x && (1 \| (x1 += x_incr)));
	+
	+}
	+
	void erase_screen(){
	int i;
	for(i=0;i<HEIGHT; i++)
	@@ -297,6 +316,10 @@ int progr_y(int dir){
	return dir == DIR_U ? -1 : dir == DIR_D ? 1: 0;
	}

	+void set_video(int v){
	+ printf("\033[%dm", v);
	+}
	+
	/* Lines and markers */

	void toggle_hline(){
	@@ -626,6 +649,45 @@ void new_file(){
	modified=0;
	}

	+/* Visual */
	+
	+
	+void visual_box(){
	+ 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=getchar())!=EOF && c != 27 && c!= 'v'){
	+ if (!move_around(c)) switch(c){
	+ case 'f':/* fill */
	+ f = get_key("fill char: ");
	+ 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();
	+ state = MOVE;
	+}
	+
	+
	+
	/* Commands */

	void commands(){
	@@ -665,6 +727,10 @@ void commands(){
	state = DEL;
	delete();
	break;
	+ case 'v':
	+ state = VIS;
	+ visual_box();
	+ break;
	case '-':
	toggle_hline();
	break;