use bitmap for bar

src/main.c

@@ -152,7 +152,7 @@ void win_float(WINDOW *lwin, float data, int digits, int use_color, int color) {
         wrefresh(lwin);
 }
 
-void win_bar(WINDOW *lwin, int data, int data_max, int use_color) {
+void win_bar(WINDOW *lwin, int data, int data_max, int use_color, int digits) {
         int lwiny, lwinx;
         getmaxyx(lwin, lwiny, lwinx);
 
@@ -178,17 +178,54 @@ void win_bar(WINDOW *lwin, int data, int data_max, int use_color) {
                 }
         }
 
-        char buf[16];
-        snprintf(buf, sizeof(buf), "%d W", data);
-        mvwprintw(lwin, lwiny / 2 - 1, 3, "%s", buf);
-
         if (use_color) {
                 wattroff(lwin, COLOR_PAIR(3));
                 wattroff(lwin, COLOR_PAIR(2));
                 wattroff(lwin, COLOR_PAIR(1));
         }
 
+        if (use_color) {
+                wattroff(lwin, COLOR_PAIR(0));
+        }
+
+        char buf[16];
+        int len;
+        snprintf(buf , sizeof(buf), "%d", data);
+        len = strlen(buf);
+
+        int bh = 5;   // bitmap height
+        int bw = 3;   // bitmap width
+
+        int size = smaller_of((lwiny - 2) / bh, (lwinx - 2 - (digits - 1)) / (bw * digits));
+
+        int total_width = digits * (bw * size) + (digits - 1);
+        int startx = (lwinx - total_width) / 3;
+        int starty = (lwiny - bh * size) / 2;
+        int offset = (bw * size + 1) * (digits - len);
+
+        for (int d = 0; d < len; d++) {
+                int digit = buf[d] - '0';
+                int dx = startx + d * (bw * size + 1) + offset;
+        
+                for (int y = 0; y < bh; y++) {
+                        for (int x = 0; x < bw; x++) {
+                                if (digit_bitmaps[digit][y][x]) {
+                                for (int yy = 0; yy < size; yy++)
+                                        for (int xx = 0; xx < size; xx++)
+                                        mvwaddch(lwin,
+                                                starty + y * size + yy,
+                                                dx + x * size + xx,
+                                                ACS_CKBOARD);
+                                }
+                        }
+                }
+        }
+
         wrefresh(lwin);
+
+        if (use_color) {
+                wattroff(lwin, COLOR_PAIR(0));
+        }
 }
 
 void bar_mark(WINDOW *lwin) {
@@ -330,7 +367,7 @@ int main(int argc, char **argv) {
                         win_int(win[0], speed, 3, use_color, color_high(speed, lspeed, hspeed));
                         win_int(win[1], rpm, 4, use_color, color_high(rpm, lrpm, hrpm));
                         win_float(win[3], tq, 3, use_color, color_high(tq, ltq, htq));
-                        win_bar(win[4], power, hpower, use_color);
+                        win_bar(win[4], power, hpower, use_color, 4);
                         win_float(win[5], eff, 5, use_color, color_high(eff, leff, heff));
                         t100 = now;
                 }