void scroll_pad (struct WinMeta * win_meta, char dir) {
// Scroll pad left or right (if possible).
- if ('+' == dir && win_meta->pad_offset + win_meta->width < getmaxx(win_meta->pad))
+ if ('+' == dir && win_meta->pad_offset + win_meta->width < getmaxx(win_meta->pad) - 1)
win_meta->pad_offset++;
else if ('-' == dir && win_meta->pad_offset > 0)
win_meta->pad_offset--; }
if (win_meta->chain_end != win) { // Let chain element next to win know its new predecessor.
win->next->prev = win->prev;
if (win_meta->active == win) // If win was active, shift active window pointer to
- win_meta->active = win->next; // the next chain element, if that is a window ...
- update_windows(win_meta, win->next); }
+ win_meta->active = win->next; } // the next chain element, if that is a window ...
else {
win_meta->chain_end = win->prev;
if (win_meta->active == win) // ... or else to the previous element.
win_meta->active = win->prev; }
+ if (0 != win->prev)
+ update_windows(win_meta, win->prev);
+ else if (0 != win->next)
+ update_windows(win_meta, win->next);
win->prev = 0;
win->next = 0; }
if (0 != win->next) {
draw_windows (win->next); } }
+void draw_vertical_scroll_hint (struct WinMeta * win_meta, uint16_t x, uint32_t more_cols, char dir) {
+// Draw scroll hint line in win at col x of pad display, announce more_cols more columns in direction dir.
+ uint16_t y, offset;
+ offset = 0;
+ char phrase[] = "more columns";
+ char * scrolldesc = malloc((3 * sizeof(char)) + strlen(phrase) + 10); // 10 = max chars for uint32_t string
+ sprintf(scrolldesc, " %d %s ", more_cols, phrase);
+ offset = 1;
+ if (win_meta->height > (strlen(scrolldesc) + 1))
+ offset = (win_meta->height - strlen(scrolldesc)) / 2;
+ for (y = 0; y < win_meta->height; y++)
+ if (y >= offset && y < strlen(scrolldesc) + offset)
+ mvwaddch(win_meta->pad, y, x, scrolldesc[y - offset] | A_REVERSE);
+ else
+ mvwaddch(win_meta->pad, y, x, dir | A_REVERSE);
+ free(scrolldesc); }
+
void draw_all_windows (struct WinMeta * win_meta) {
// Draw pad with all windows and their borders, plus scrolling hints.
erase();
mvwaddch(win_meta->pad, all_corners[i].tr.y, all_corners[i].tr.x, '+');
mvwaddch(win_meta->pad, all_corners[i].bl.y, all_corners[i].bl.x, '+');
mvwaddch(win_meta->pad, all_corners[i].br.y, all_corners[i].br.x, '+'); }
- // pnoutrefresh(win_meta->pad, 0, win_meta->pad_offset, 0, 0, win_meta->height, win_meta->width - 1);
free(all_corners);
uint16_t y;
if (win_meta->pad_offset > 0)
+ draw_vertical_scroll_hint(win_meta, win_meta->pad_offset, win_meta->pad_offset + 1, '<');
+ if (win_meta->pad_offset + win_meta->width < getmaxx(win_meta->pad) - 1)
for (y = 0; y < win_meta->height; y++)
- mvwaddch(win_meta->pad, y, win_meta->pad_offset, '<' | A_REVERSE);
- if (win_meta->pad_offset + win_meta->width < getmaxx(win_meta->pad))
- for (y = 0; y < win_meta->height; y++)
- mvwaddch(win_meta->pad, y, win_meta->pad_offset + win_meta->width - 1, '>' | A_REVERSE);
+ draw_vertical_scroll_hint(win_meta, win_meta->pad_offset + win_meta->width - 1,
+ getmaxx(win_meta->pad) - (win_meta->pad_offset + win_meta->width), '>');
pnoutrefresh(win_meta->pad, 0, win_meta->pad_offset, 0, 0, win_meta->height, win_meta->width - 1); }
doupdate(); }