struct WinMeta init_win_meta (WINDOW * screen) {
// Create and populate WinMeta struct with sane default values.
struct WinMeta win_meta;
- win_meta.height = screen->_maxy + 1;
+ win_meta.screen = screen;
+ win_meta.height = getmaxy(screen);
+ win_meta.width = getmaxx(screen);
win_meta.chain_start = 0;
win_meta.chain_end = 0;
+ win_meta.pad_offset = 0;
+ win_meta.pad = newpad(win_meta.height, 1);
return win_meta; }
struct Win init_window (struct WinMeta * win_meta, char * title) {
struct Win win;
win.prev = 0;
win.next = 0;
- win.curses_win = 0;
+ win.curses = 0;
win.title = title;
win.width = 20;
- win.height = win_meta->height;
+ win.height = win_meta->height - 1;
return win; }
void append_window (struct WinMeta * win_meta, struct Win * win) {
win_meta->active = win;
win_meta->chain_start = win; }
win_meta->chain_end = win;
- update_windows(win_meta, win);
- draw_all_windows(win_meta); }
+ update_windows(win_meta, win); }
void suspend_window (struct WinMeta * win_meta, struct Win * win) {
// Destroy win, suspend from window chain. Update geometry of following rows, as well as activity selection.
destroy_window(win);
- if (win_meta->chain_start != win) // Give win's position in the chain to element next to it in the chain.
+ if (win_meta->chain_start != win) // Give win's position in the chain to element next to it in the chain.
win->prev->next = win->next;
else
win_meta->chain_start = win->next;
- if (win_meta->chain_end != win) { // Let chain element next to win know its new predecessor.
+ 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 ...
+ 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); }
else {
win_meta->chain_end = win->prev;
- if (win_meta->active == win) // ... or else to the previous element.
+ if (win_meta->active == win) // ... or else to the previous element.
win_meta->active = win->prev; }
win->prev = 0;
- win->next = 0;
- if (0 != win_meta->chain_start)
- draw_all_windows(win_meta); }
+ win->next = 0; }
-void place_window (struct WinMeta * win_meta, struct Win * win) {
+struct yx place_window (struct WinMeta * win_meta, struct Win * win) {
// Based on position and sizes of previous window, find fitting place for current window.
- win->start_x = 0; // if window is first in chain, place it on top-left corner
- win->start_y = 0;
+ struct yx start;
+ start.x = 0; // if window is first in chain, place it on top-left corner
+ start.y = 1;
if (0 != win->prev) {
- win->start_x = win->prev->start_x + win->prev->width; // next best default: open new window column with it
- if (win->prev->height < win_meta->height) { // ... unless the previous window does not fill a whole column
- struct Win * last_ceiling;
- last_ceiling = win->prev;
- while (last_ceiling->start_y != 0 // determine last window serving as a
- && (last_ceiling->prev->start_y == last_ceiling->start_y // ceiling to other windows or filling
- || last_ceiling->prev->width > last_ceiling->width)) // the whole last column's width
- last_ceiling = last_ceiling->prev;
- if (win->prev == last_ceiling) {
- if (win->width <= win->prev->width
- && win->prev->start_y + win->prev->height + win->height <= win_meta->height) {
- win->start_x = win->prev->start_x; // if prev window is last ceiling, try to
- win->start_y = win->prev->start_y + win->prev->height; } } // fit window below it; else: use default
- else {
- int remaining_width = last_ceiling->width; // calculate free width remaining in last row of last
- struct Win * win_p = last_ceiling->next; // window column
- while (win != win_p) {
- remaining_width = remaining_width - win_p->width;
- win_p = win_p->next; }
- if (win->width <= remaining_width && win->height <= win->prev->height) { // if enough space left in
- win->start_y = win->prev->start_y; // last column, place window
- win->start_x = win->prev->start_x + win->prev->width; } // here
- else if (win->width <= last_ceiling->width
- && win->height + win->prev->height + win->prev->start_y <= win_meta->height ) {
- win->start_y = last_ceiling->next->start_y + last_ceiling->next->height; // else, try to put it
- win->start_x = last_ceiling->start_x; } // below
- else // else, put it next to max
- win->start_x = last_ceiling->width + last_ceiling->start_x; } } } } // width of the last last column
+ struct Win * win_top = win->prev;
+ while (getbegy(win_top->curses) != 1)
+ win_top = win_top->prev; // else, default to placing window in new top
+ start.x = getbegx(win_top->curses) + win_top->width + 1; // column to the right of the last one
+ int winprev_maxy = getbegy(win->prev->curses) + getmaxy(win->prev->curses);
+ if (win->width <= win->prev->width && win->height < win_meta->height - winprev_maxy) {
+ start.x = getbegx(win->prev->curses); // place window below previous window if it fits
+ start.y = winprev_maxy + 1; } // vertically and is not wider than its predecessor
+ else {
+ struct Win * win_up = win->prev;
+ struct Win * win_upup = win_up;
+ int widthdiff;
+ while (win_up != win_top) {
+ win_upup = win_up->prev;
+ while (1) {
+ if (getbegy(win_up->curses) != getbegy(win_upup->curses))
+ break;
+ win_upup = win_upup->prev; }
+ winprev_maxy = getbegy(win_upup->curses) + getmaxy(win_upup->curses);
+ widthdiff = (getbegx(win_upup->curses) + win_upup->width) - (getbegx(win_up->curses) + win_up->width);
+ if (win->height < win_meta->height - winprev_maxy && win->width < widthdiff) {
+ start.x = getbegx(win_up->curses) + win_up->width + 1; // else try to open new sub column under last
+ start.y = winprev_maxy + 1; // window below which enough space remains
+ break; }
+ win_up = win_upup; } } }
+ return start; }
void update_windows (struct WinMeta * win_meta, struct Win * win) {
-// Update geometry of win and its next of kin. Before, destroy window, if visible. After, (re-)build it.
- if (0 != win->curses_win)
+// Update geometry of win and its next of kin. Destroy (if visible), (re-)build window. If need, resize pad.
+ if (0 != win->curses)
destroy_window (win);
- place_window(win_meta, win);
- if (win->start_y + win->height < win_meta->height) // dependent on window position,
- win->border_down = 1; // append space for borders to be drawn
- else
- win->border_down = 0;
- if (win->start_x > 0)
- win->border_left = 1;
- else
- win->border_left = 0;
- win->curses_win = newwin(win->height + win->border_down, win->width + win->border_left, win->start_y, win->start_x - win->border_left);
+ struct yx startyx = place_window(win_meta, win);
+ int lastwincol = 0;
+ struct Win * win_p = win_meta->chain_start;
+ while (win_p != 0) {
+ if (win_p != win && getbegx(win_p->curses) + win_p->width > lastwincol + 1)
+ lastwincol = getbegx(win_p->curses) + win_p->width - 1;
+ else if (win_p == win && startyx.x + win->width > lastwincol + 1)
+ lastwincol = startyx.x + win->width - 1;
+ win_p = win_p->next; }
+ if (getmaxx(win_meta->pad) != lastwincol) {
+ wresize(win_meta->pad, getmaxy(win_meta->pad), lastwincol + 2); }
+ win->curses = subpad(win_meta->pad, win->height, win->width, startyx.y, startyx.x);
if (0 != win->next)
update_windows (win_meta, win->next); }
void destroy_window (struct Win * win) {
-// Undraw and delete window.
- undraw_window (win->curses_win);
- delwin(win->curses_win);
- win->curses_win = 0; }
-
-void draw_windows (struct WinMeta * win_meta, struct Win * win) {
-// Draw all windows from the current one on.
- draw_window(win_meta, win);
- if (0 != win->next)
- draw_windows (win_meta, win->next); }
-
-void draw_all_windows (struct WinMeta * win_meta) {
-// Draw all windows from the chain start on.
- draw_windows (win_meta, win_meta->chain_start); }
+// Delete window.
+ delwin(win->curses);
+ win->curses = 0; }
-void draw_window(struct WinMeta * win_meta, struct Win * win) {
-// Draw win's content, including border and title (the latter dependent on space available for it).
- char ls = '|';
- char rs = '|';
- char ts = '-';
- char bs = '-';
- char tl = '-';
- char tr = '+';
- char bl = '|';
- char br = '|';
- if (1 == win->border_down) {
- bl = '+';
- br = '+'; }
- if (1 == win->border_left)
- tl = '+';
- wborder(win->curses_win, ls, rs, ts, bs, tl, tr, bl, br);
- char min_title_length_visible = 3; // 1 char minimal, plus 2 chars for decoration left/right of title
- if (win->width > min_title_length_visible) {
- int title_length = strlen(win->title);
- int title_offset = (((win->width) - (title_length + 2)) / 2) + win->border_left; // + 2 is for decoration
- if (title_offset < win->border_left)
- title_offset = win->border_left;
- int length_visible = strnlen(win->title, win->width - min_title_length_visible);
+void draw_window_borders (struct Win * win, char active) {
+// Draw borders of window win, including title. Decorate in a special way if window is marked as active.
+ int y, x;
+ for (y = getbegy(win->curses); y <= getbegy(win->curses) + win->height; y++) {
+ mvwaddch(wgetparent(win->curses), y, getbegx(win->curses) - 1, '|');
+ mvwaddch(wgetparent(win->curses), y, getbegx(win->curses) + win->width, '|'); }
+ for (x = getbegx(win->curses); x <= getbegx(win->curses) + win->width; x++) {
+ mvwaddch(wgetparent(win->curses), getbegy(win->curses) - 1, x, '-');
+ mvwaddch(wgetparent(win->curses), getbegy(win->curses) + win->height, x, '-'); }
+ char min_title_length_visible = 3; // 1 char minimal, plus 2 chars for decoration left/right of title
+ if (win->width >= min_title_length_visible) {
+ int title_offset = 0;
+ if (win->width > strlen(win->title) + 2)
+ title_offset = (win->width - (strlen(win->title) + 2)) / 2; // + 2 is for decoration
+ int length_visible = strnlen(win->title, win->width - 2);
char title[length_visible + 3];
char decoration = ' ';
- if (win_meta->active == win)
+ if (1 == active)
decoration = '$';
memcpy(title + 1, win->title, length_visible);
title[0] = title[length_visible + 1] = decoration;
title[length_visible + 2] = '\0';
- mvwaddstr(win->curses_win, 0, title_offset, title); }
- if (win->height > 1 && win->width > 1) ;
- win->draw(win);
- wrefresh(win->curses_win); }
+ mvwaddstr (wgetparent(win->curses), getbegy(win->curses)-1, getbegx(win->curses)+title_offset, title); } }
-void undraw_window (WINDOW * win) {
-// Fill entire window with whitespace.
- int y, x;
- for (y = 0; y <= win->_maxy; y++)
- for (x = 0; x <= win->_maxx; x++)
- mvwaddch(win, y, x, ' ');
- wrefresh(win); }
+void draw_windows_borders (struct Win * win, struct Win * win_active, struct Corners * corners, int ccount) {
+// Craw draw_window_borders() for all windows in chain from win on. Save current window's border corners.
+ char active = 0;
+ if (win == win_active)
+ active = 1;
+ draw_window_borders(win, active);
+ corners[ccount].tl.y = getbegy(win->curses) - 1;
+ corners[ccount].tl.x = getbegx(win->curses) - 1;
+ corners[ccount].tr.y = getbegy(win->curses) - 1;
+ corners[ccount].tr.x = getbegx(win->curses) + win->width;
+ corners[ccount].bl.y = getbegy(win->curses) + win->height;
+ corners[ccount].bl.x = getbegx(win->curses) - 1;
+ corners[ccount].br.y = getbegy(win->curses) + win->height;
+ corners[ccount].br.x = getbegx(win->curses) + win->width;
+ if (0 != win->next) {
+ draw_windows_borders (win->next, win_active, corners, ccount + 1); } }
+
+void draw_windows (struct Win * win) {
+// Draw contents of all windows in window chain from win on.
+ win->draw(win);
+ if (0 != win->next) {
+ draw_windows (win->next); } }
+
+void draw_all_windows (struct WinMeta * win_meta) {
+// Draw all windows and their borders.
+ erase();
+ wnoutrefresh(win_meta->screen);
+ werase(win_meta->pad);
+ if (win_meta->chain_start) {
+ int n_wins = 1;
+ struct Win * win_p = win_meta->chain_start;
+ while (0 != win_p->next) {
+ win_p = win_p->next;
+ n_wins++; }
+ struct Corners * all_corners = malloc(sizeof(struct Corners) * n_wins);
+ draw_windows (win_meta->chain_start);
+ draw_windows_borders (win_meta->chain_start, win_meta->active, all_corners, 0);
+ int i;
+ for (i = 0; i < n_wins; i++) {
+ mvwaddch(win_meta->pad, all_corners[i].tl.y, all_corners[i].tl.x, '+');
+ 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); }
+ doupdate(); }
void resize_window (struct WinMeta * win_meta, char change) {
// Grow or shrink currently active window. Correct its geometry and that of its followers.
- if (change == '-' && win_meta->active->height > 2)
+ if (change == '-' && win_meta->active->height > 1)
win_meta->active->height--;
- else if (change == '+' && win_meta->active->height < win_meta->height)
+ else if (change == '+' && win_meta->active->height < win_meta->height - 1)
win_meta->active->height++;
- else if (change == '_' && win_meta->active->width > 2)
+ else if (change == '_' && win_meta->active->width > 1)
win_meta->active->width--;
else if (change == '*')
win_meta->active->width++;
- update_windows(win_meta, win_meta->chain_start);
- draw_all_windows(win_meta); }
+ update_windows(win_meta, win_meta->chain_start); }
void cycle_active_window (struct WinMeta * win_meta, char dir) {
// Cycle active window selection forwards (dir = 'n') or backwards.
if (win_meta->active->prev != 0)
win_meta->active = win_meta->active->prev;
else
- win_meta->active = win_meta->chain_end; }
- draw_all_windows(win_meta); }
+ win_meta->active = win_meta->chain_end; } }
void shift_window (struct WinMeta * win_meta, char dir) {
// Move active window forward/backward in window chain. If jumping beyond start/end, move to other chain end.
- if (win_meta->active != win_meta->chain_start || win_meta->active != win_meta->chain_end) {
- if ('f' == dir) {
- if (win_meta->active == win_meta->chain_end) { // move forward beyond chain end
- win_meta->active->prev->next = 0;
- win_meta->chain_end = win_meta->active->prev;
- win_meta->active->prev = 0;
- win_meta->active->next = win_meta->chain_start;
- win_meta->chain_start->prev = win_meta->active;
- win_meta->chain_start = win_meta->active; }
- else { // move forward before chain end
- if (win_meta->chain_start != win_meta->active)
- win_meta->active->prev->next = win_meta->active->next;
- else
- win_meta->chain_start = win_meta->active->next;
- win_meta->active->next->prev = win_meta->active->prev;
- win_meta->active->prev = win_meta->active->next;
- win_meta->active->next = win_meta->active->next->next;
- win_meta->active->prev->next = win_meta->active;
- if (0 != win_meta->active->next)
- win_meta->active->next->prev = win_meta->active;
- else
- win_meta->chain_end = win_meta->active; } }
- else { // mirror of above, backwards
- if (win_meta->active == win_meta->chain_start) {
- win_meta->active->next->prev = 0;
- win_meta->chain_start = win_meta->active->next;
- win_meta->active->next = 0;
- win_meta->active->prev = win_meta->chain_end;
- win_meta->chain_end->next = win_meta->active;
- win_meta->chain_end = win_meta->active; }
+ if (win_meta->chain_start != win_meta->chain_end && (dir == 'f' || dir == 'b')) {
+ int i, i_max;
+ struct Win * win_shift = win_meta->active;
+ char wrap = 0;
+ if ((dir == 'f' && win_shift == win_meta->chain_end)
+ || (dir == 'b' && win_shift == win_meta->chain_start))
+ wrap = 1;
+ struct Win * win_p, * win_p_next;
+ for (i_max = 1, win_p = win_meta->chain_start; win_p != win_meta->chain_end; i_max++)
+ win_p = win_p->next;
+ struct Win ** wins = malloc(i_max * sizeof(struct Win *));
+ for (i = 0, win_p = win_meta->chain_start; i < i_max; i++) {
+ win_p_next = win_p->next;
+ suspend_window(win_meta, win_p);
+ wins[i] = win_p;
+ win_p = win_p_next; }
+ if (wrap)
+ if (dir == 'f') {
+ append_window(win_meta, win_shift);
+ for (i = 0; i < i_max - 1; i++)
+ append_window(win_meta, wins[i]); }
else {
- if (win_meta->chain_end != win_meta->active)
- win_meta->active->next->prev = win_meta->active->prev;
- else
- win_meta->chain_end = win_meta->active->prev;
- win_meta->active->prev->next = win_meta->active->next;
- win_meta->active->next = win_meta->active->prev;
- win_meta->active->prev = win_meta->active->prev->prev;
- win_meta->active->next->prev = win_meta->active;
- if (0 != win_meta->active->prev)
- win_meta->active->prev->next = win_meta->active;
+ for (i = 1; i < i_max; i++)
+ append_window(win_meta, wins[i]);
+ append_window(win_meta, win_shift); }
+ else
+ for (i = 0; i < i_max; i++)
+ if ((dir == 'f' && win_shift == wins[i]) || (dir == 'b' && win_shift == wins[i+1])) {
+ append_window(win_meta, wins[i+1]);
+ append_window(win_meta, wins[i]);
+ i++; }
else
- win_meta->chain_start = win_meta->active; } }
- update_windows(win_meta, win_meta->chain_start);
- draw_all_windows(win_meta); } }
+ append_window(win_meta, wins[i]);
+ free(wins);
+ win_meta->active = win_shift; } }
projects / plomrogue / blobdiff