towards dynamic screen management - gramscii - A simple editor for ASCII box-and-arrow charts
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DIR Files
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DIR README
DIR LICENSE
---
DIR commit 0adbc2a776c36b736bb5acb7184ba559d9428bc4
DIR parent 8f25f7b9abb68e2efbc732a69f09d795ad79433c
HTML Author: KatolaZ <katolaz@freaknet.org>
Date: Fri, 26 Jul 2019 22:13:33 +0100
towards dynamic screen management
Diffstat:
M Makefile | 5 +++--
M TODO | 3 +--
M gramscii.c | 67 ++++++++++++++++++++-----------
3 files changed, 48 insertions(+), 27 deletions(-)
---
DIR diff --git a/Makefile b/Makefile
@@ -17,8 +17,9 @@ options:
@echo "-+-+-+-+-+-+-+-+-+-+-"
-gramscii: ${INC}
-
+gramscii: ${SRC} ${INC}
+ $(CC) $(CFLAGS) -o gramscii ${SRC}
+
clean:
@echo cleaning
@rm -f $(SRC:.c=)
DIR diff --git a/TODO b/TODO
@@ -1,5 +1,5 @@
+ optimize redraws (redraw only the modified rectangle)
-- change screen management (i.e., dynamic array of lines)
++ change screen management (i.e., dynamic array of lines)
- add screen geometry option (-g 25x80?)
- read file at point
- read output of command (!)
@@ -48,4 +48,3 @@
* set different line styles (done for hl, vl, corner)
* add status bar
* implement box
-
DIR diff --git a/gramscii.c b/gramscii.c
@@ -33,6 +33,13 @@
#include "arg.h"
+typedef struct{
+ int sz;
+ int lst;
+ char *s;
+} line_t;
+
+
#define MOVE 0x00
#define BOX 0x01
#define ARROW 0x02
@@ -71,9 +78,10 @@
#define MIN(x,y) (x) < (y) ? (x) : (y)
#define MAX(x,y) (x) > (y) ? (x) : (y)
-/** #define DEBUG 1 **/
+#define DEBUG 1
-char **screen;
+line_t *screen;
+int num_lines;
int WIDTH, HEIGHT;
int state;
@@ -113,7 +121,7 @@ struct termios t1, t2, t3;
void dump_lines(){
int i;
for (i=0; i<HEIGHT; i++){
- printf("%s\n", screen[i]);
+ printf("%s\n", screen[i].s);
}
}
@@ -179,7 +187,7 @@ void status_bar(){
else
printf(" *%s*", fname );
#ifdef DEBUG
- printf(" '%d' ", screen[y][x]);
+ printf(" '%d' ", screen[y].s[x]);
#endif
printf("\033[0m");
fflush(stdout);
@@ -232,13 +240,24 @@ void show_cursor(){
fflush(stdout);
}
-void set_cur(char c){
- screen[y][x] = c;
-}
-void set_xy(int x, int y, char c){
+void set_xy(int _x, int _y, char c){
/* FIXME: check if x and y are valid!!!! */
- screen[y][x] = c;
+ if (screen[_y].sz < _x + 2){
+ screen[_y].sz = (_x +2) * 2;
+ screen[_y].s = realloc(screen[_y].s, screen[_y].sz * sizeof(char));
+ }
+ while (screen[_y].lst<_x){
+ screen[_y].s[screen[_y].lst] = BG;
+ screen[_y].lst += 1;
+ }
+ screen[_y].s[_x] = c;
+ if (_x == screen[_y].lst)
+ screen[_y].s[_x+1] = '\0';
+}
+
+void set_cur(char c){
+ set_xy(x, y, c);
}
void draw_xy(int x, int y, char c){
@@ -254,7 +273,7 @@ void update_current(){
if (silent)
return;
printf("\033[%d'%df",y+1,x+1);
- putchar(screen[y][x]);
+ putchar(screen[y].s[x]);
fflush(stdout);
}
@@ -282,7 +301,7 @@ void erase_box(int x1, int y1, char c){
void erase_screen(){
int i;
for(i=0;i<HEIGHT; i++)
- erase_line(screen[i]);
+ erase_line(screen[i].s);
}
void check_bound(){
@@ -311,7 +330,7 @@ void redraw(){
return;
printf("\033[2J\033[1;1H");
for (i=0;i<HEIGHT;i++){
- fprintf(stdout,"%s\n",screen[i]);
+ fprintf(stdout,"%s\n",screen[i].s);
}
status_bar();
show_cursor();
@@ -774,7 +793,7 @@ void write_file(FILE *fc){
return;
}
for (i=0; i<HEIGHT; i++){
- fprintf(fout, "%s\n", screen[i]);
+ fprintf(fout, "%s\n", screen[i].s);
}
fclose(fout);
modified = 0;
@@ -800,10 +819,10 @@ void load_file(FILE *fc){
get_string(fc, "Load file: ", newfname, 255);
if ((fin=fopen(newfname, "r")) != NULL){
i = 0;
- while((fgets(screen[i], WIDTH+2, fin)) != NULL && i<HEIGHT)
- screen[i++][WIDTH-1]='\0';
+ while((fgets(screen[i].s, WIDTH+2, fin)) != NULL && i<HEIGHT)
+ screen[i++].s[WIDTH-1]='\0';
for(;i<HEIGHT; i++){
- erase_line(screen[i]);
+ erase_line(screen[i].s);
}
fclose(fin);
}
@@ -872,24 +891,26 @@ void init_screen(){
WIDTH=80;
HEIGHT=24;
}
- screen = malloc(HEIGHT * sizeof(char *));
+ screen = malloc(HEIGHT * sizeof(line_t));
+ num_lines = HEIGHT;
if (screen == NULL){
perror("allocating screen");
exit(1);
}
for (i=0; i<HEIGHT; i++){
- screen[i] = malloc((WIDTH+1) * sizeof(char));
- if (screen[i] == NULL){
- perror("allocating screen[i]");
+ screen[i].sz = WIDTH+1;
+ screen[i].s = malloc((screen[i].sz) * sizeof(char));
+ if (screen[i].s == NULL){
+ perror("allocating screen[i].s");
exit(1);
}
- memset(screen[i], ' ', WIDTH * sizeof(char));
- screen[i][WIDTH]='\0';
+ memset(screen[i].s, BG, screen[i].sz);
+ screen[i].lst = WIDTH;
+ screen[i].s[screen[i].lst+1]='\0';
}
reset_styles();
}
-
void init(){
signal(SIGHUP, cleanup);