#include <stdlib.h>
+#include <stdint.h>
#include <ncurses.h>
#include <string.h>
#include "windows.h"
-struct WinMeta init_win_meta (WINDOW * screen) {
+struct Corners {
+ struct yx_uint16 tl;
+ struct yx_uint16 tr;
+ struct yx_uint16 bl;
+ struct yx_uint16 br; };
+
+static void refit_pad (struct WinMeta *);
+static void place_window (struct WinMeta *, struct Win *);
+static void update_windows (struct WinMeta *, struct Win *);
+static void destroy_window (struct Win *);
+static void draw_windows_borders (struct Win *, struct Win *, struct Corners *, uint16_t);
+static void draw_window_borders (struct Win *, char);
+static void draw_windows (struct Win *);
+
+extern struct WinMeta init_win_meta (WINDOW * screen) {
// Create and populate WinMeta struct with sane default values.
struct WinMeta win_meta;
win_meta.screen = screen;
- win_meta.height = getmaxy(screen);
- win_meta.width = getmaxx(screen);
+ win_meta.pad.size.y = getmaxy(screen);
+ win_meta.pad.size.x = 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);
+ win_meta.pad.curses_win = newpad(win_meta.pad.size.y, 1);
+ win_meta.active = 0;
return win_meta; }
-void scroll_pad (struct WinMeta * win_meta, char dir) {
-// Scroll pad left (if possible) or right.
- if ('+' == dir)
- win_meta->pad_offset++;
- else if ('-' == dir && win_meta->pad_offset > 0)
- win_meta->pad_offset--; }
-
-struct Win init_window (struct WinMeta * win_meta, char * title) {
+extern struct Win init_window (struct WinMeta * win_meta, char * title, void * data, void * func) {
// Create and populate Win struct with sane default values.
struct Win win;
win.prev = 0;
win.next = 0;
- win.curses = 0;
+ win.frame.curses_win = 0;
win.title = title;
- win.width = 20;
- win.height = win_meta->height - 1;
+ win.frame.size.x = 20;
+ win.frame.size.y = win_meta->pad.size.y - 1;
+ win.data = data;
+ win.draw = func;
return win; }
-void append_window (struct WinMeta * win_meta, struct Win * win) {
+extern void append_window (struct WinMeta * win_meta, struct Win * win) {
// Append win to window chain. Set active, if first window. Update geometry of windows from new window on.
if (0 != win_meta->chain_start) {
win->prev = win_meta->chain_end;
win_meta->chain_end = win;
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.
+static void refit_pad (struct WinMeta * win_meta) {
+// Fit pad width to minimum width demanded by current windows' geometries.
+ uint16_t lastwincol = 0;
+ struct Win * win_p = win_meta->chain_start;
+ while (win_p != 0) {
+ if (win_p->start.x + win_p->frame.size.x > lastwincol + 1)
+ lastwincol = win_p->start.x + win_p->frame.size.x - 1;
+ win_p = win_p->next; }
+ if (getmaxx(win_meta->pad.curses_win) != lastwincol)
+ wresize(win_meta->pad.curses_win, getmaxy(win_meta->pad.curses_win), lastwincol + 2); }
+
+extern void suspend_window (struct WinMeta * win_meta, struct Win * win) {
+// Destroy win, suspend from chain. Update geometry of following rows and pad, 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.
win->prev->next = win->next;
else
win_meta->chain_start = win->next;
+ char pad_refitted = 0;
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); }
+ update_windows(win_meta, win->next);
+ pad_refitted = 1; }
else {
win_meta->chain_end = win->prev;
if (win_meta->active == win) // ... or else to the previous element.
win_meta->active = win->prev; }
win->prev = 0;
- win->next = 0; }
+ win->next = 0;
+ if (0 == pad_refitted) // Refit pad if necessary.
+ refit_pad(win_meta); }
-struct yx place_window (struct WinMeta * win_meta, struct Win * win) {
+static void place_window (struct WinMeta * win_meta, struct Win * win) {
// Based on position and sizes of previous window, find fitting place for current window.
- struct yx start;
- start.x = 0; // if window is first in chain, place it on top-left corner
- start.y = 1;
+ win->start.x = 0; // if window is first in chain, place it on top-left corner
+ win->start.y = 1;
if (0 != win->prev) {
struct Win * win_top = win->prev;
- while (getbegy(win_top->curses) != 1)
+ while (win_top->start.y != 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
+ win->start.x = win_top->start.x + win_top->frame.size.x + 1; // column to the right of the last one
+ uint16_t winprev_maxy = win->prev->start.y + getmaxy(win->prev->frame.curses_win);
+ if ( win->frame.size.x <= win->prev->frame.size.x
+ && win->frame.size.y < win_meta->pad.size.y - winprev_maxy) {
+ win->start.x = win->prev->start.x; // place window below previous window if it fits
+ win->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;
+ uint16_t widthdiff;
while (win_up != win_top) {
win_upup = win_up->prev;
while (1) {
- if (getbegy(win_up->curses) != getbegy(win_upup->curses))
+ if (win_up->start.y != win_upup->start.y)
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
+ winprev_maxy = win_upup->start.y + getmaxy(win_upup->frame.curses_win);
+ widthdiff = (win_upup->start.x + win_upup->frame.size.x) - (win_up->start.x + win_up->frame.size.x);
+ if (win->frame.size.y < win_meta->pad.size.y - winprev_maxy && win->frame.size.x < widthdiff) {
+ win->start.x = win_up->start.x + win_up->frame.size.x + 1 ; // else try to open new sub column under
+ win->start.y = winprev_maxy + 1; // last window below which enough space remains
break; }
- win_up = win_upup; } } }
- return start; }
+ win_up = win_upup; } } } }
-void update_windows (struct WinMeta * win_meta, struct Win * win) {
+static void update_windows (struct WinMeta * win_meta, struct Win * win) {
// Update geometry of win and its next of kin. Destroy (if visible), (re-)build window. If need, resize pad.
- if (0 != win->curses)
+ if (0 != win->frame.curses_win)
destroy_window (win);
- 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);
+ place_window(win_meta, win);
+ refit_pad(win_meta);
+ win->frame.curses_win = subpad(win_meta->pad.curses_win, win->frame.size.y, win->frame.size.x, win->start.y,
+ win->start.x);
if (0 != win->next)
update_windows (win_meta, win->next); }
-void destroy_window (struct Win * win) {
+static void destroy_window (struct Win * win) {
// Delete window.
- delwin(win->curses);
- win->curses = 0; }
+ delwin(win->frame.curses_win);
+ win->frame.curses_win = 0; }
-void draw_window_borders (struct Win * win, char active) {
+static 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, '-'); }
+ uint16_t y, x;
+ for (y = win->start.y; y <= win->start.y + win->frame.size.y; y++) {
+ mvwaddch(wgetparent(win->frame.curses_win), y, win->start.x - 1, '|');
+ mvwaddch(wgetparent(win->frame.curses_win), y, win->start.x + win->frame.size.x, '|'); }
+ for (x = win->start.x; x <= win->start.x + win->frame.size.x; x++) {
+ mvwaddch(wgetparent(win->frame.curses_win), win->start.y - 1, x, '-');
+ mvwaddch(wgetparent(win->frame.curses_win), win->start.y + win->frame.size.y, 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);
+ if (win->frame.size.x >= min_title_length_visible) {
+ uint16_t title_offset = 0;
+ if (win->frame.size.x > strlen(win->title) + 2)
+ title_offset = (win->frame.size.x - (strlen(win->title) + 2)) / 2; // + 2 is for decoration
+ uint16_t length_visible = strnlen(win->title, win->frame.size.x - 2);
char title[length_visible + 3];
char decoration = ' ';
if (1 == active)
memcpy(title + 1, win->title, length_visible);
title[0] = title[length_visible + 1] = decoration;
title[length_visible + 2] = '\0';
- mvwaddstr (wgetparent(win->curses), getbegy(win->curses)-1, getbegx(win->curses)+title_offset, title); } }
+ mvwaddstr(wgetparent(win->frame.curses_win), win->start.y - 1, win->start.x + title_offset, title); } }
-void draw_windows_borders (struct Win * win, struct Win * win_active, struct Corners * corners, int ccount) {
+static void draw_windows_borders (struct Win * win, struct Win * win_active, struct Corners * corners,
+ uint16_t 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;
+ draw_window_borders(win, active);
+ corners[ccount].tl.y = win->start.y - 1;
+ corners[ccount].tl.x = win->start.x - 1;
+ corners[ccount].tr.y = win->start.y - 1;
+ corners[ccount].tr.x = win->start.x + win->frame.size.x;
+ corners[ccount].bl.y = win->start.y + win->frame.size.y;
+ corners[ccount].bl.x = win->start.x - 1;
+ corners[ccount].br.y = win->start.y + win->frame.size.y;
+ corners[ccount].br.x = win->start.x + win->frame.size.x;
if (0 != win->next) {
draw_windows_borders (win->next, win_active, corners, ccount + 1); } }
-void draw_windows (struct Win * win) {
+static 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.
+extern void draw_scroll_hint (struct Frame * frame, uint16_t pos, uint32_t dist, char dir) {
+// Draw scroll hint into frame at pos (row or col dependend on dir), mark distance of dist cells into dir.
+ char more[] = "more";
+ char unit_cols[] = "columns";
+ char unit_rows[] = "lines";
+ uint16_t dsc_space = frame->size.x;
+ char * unit = unit_rows;
+ if ('<' == dir || '>' == dir) {
+ dsc_space = frame->size.y;
+ unit = unit_cols; }
+ char * scrolldsc = malloc((4 * sizeof(char)) + strlen(more) + strlen(unit) + 10); // 10: strlen for uint32_t
+ sprintf(scrolldsc, " %d %s %s ", dist, more, unit);
+ char offset = 1, q;
+ if (dsc_space > strlen(scrolldsc) + 1)
+ offset = (dsc_space - strlen(scrolldsc)) / 2;
+ chtype symbol;
+ for (q = 0; q < dsc_space; q++) {
+ if (q >= offset && q < strlen(scrolldsc) + offset)
+ symbol = scrolldsc[q - offset] | A_REVERSE;
+ else
+ symbol = dir | A_REVERSE;
+ if ('<' == dir || '>' == dir)
+ mvwaddch(frame->curses_win, q, pos, symbol);
+ else
+ mvwaddch(frame->curses_win, pos, q, symbol); }
+ free(scrolldsc); }
+
+extern void draw_all_windows (struct WinMeta * win_meta) {
+// Draw pad with all windows and their borders, plus scrolling hints.
erase();
wnoutrefresh(win_meta->screen);
- werase(win_meta->pad);
+ werase(win_meta->pad.curses_win);
if (win_meta->chain_start) {
- int n_wins = 1;
+ uint16_t n_wins = 1;
struct Win * win_p = win_meta->chain_start;
while (0 != win_p->next) {
win_p = win_p->next;
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;
+ uint16_t 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); }
+ mvwaddch(win_meta->pad.curses_win, all_corners[i].tl.y, all_corners[i].tl.x, '+');
+ mvwaddch(win_meta->pad.curses_win, all_corners[i].tr.y, all_corners[i].tr.x, '+');
+ mvwaddch(win_meta->pad.curses_win, all_corners[i].bl.y, all_corners[i].bl.x, '+');
+ mvwaddch(win_meta->pad.curses_win, all_corners[i].br.y, all_corners[i].br.x, '+'); }
+ free(all_corners);
+ uint16_t y;
+ if (win_meta->pad_offset > 0)
+ draw_scroll_hint(&win_meta->pad, win_meta->pad_offset, win_meta->pad_offset + 1, '<');
+ if (win_meta->pad_offset + win_meta->pad.size.x < getmaxx(win_meta->pad.curses_win) - 1)
+ for (y = 0; y < win_meta->pad.size.y; y++)
+ draw_scroll_hint(&win_meta->pad, win_meta->pad_offset + win_meta->pad.size.x - 1,
+ getmaxx(win_meta->pad.curses_win) - (win_meta->pad_offset + win_meta->pad.size.x),
+ '>');
+ pnoutrefresh(win_meta->pad.curses_win, 0, win_meta->pad_offset, 0, 0, win_meta->pad.size.y,
+ win_meta->pad.size.x - 1); }
doupdate(); }
-void resize_window (struct WinMeta * win_meta, char change) {
+extern void resize_active_window (struct WinMeta * win_meta, uint16_t height, uint16_t width) {
// Grow or shrink currently active window. Correct its geometry and that of its followers.
- if (change == '-' && win_meta->active->height > 1)
- win_meta->active->height--;
- else if (change == '+' && win_meta->active->height < win_meta->height - 1)
- win_meta->active->height++;
- 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); }
+ if (0 != win_meta->active && width > 0 && height > 0 && height < win_meta->pad.size.y) {
+ win_meta->active->frame.size.y = height;
+ win_meta->active->frame.size.x = width;
+ update_windows(win_meta, win_meta->chain_start); } }
-void cycle_active_window (struct WinMeta * win_meta, char dir) {
+extern void cycle_active_window (struct WinMeta * win_meta, char dir) {
// Cycle active window selection forwards (dir = 'n') or backwards.
if (0 != win_meta->active) {
if ('n' == dir) {
else
win_meta->active = win_meta->chain_end; } } }
-void shift_window (struct WinMeta * win_meta, char dir) {
+extern void shift_active_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 (0 != win_meta->active && win_meta->chain_start != win_meta->chain_end && (dir == 'f' || dir == 'b')) {
- int i, i_max;
- struct Win * win_shift = win_meta->active;
+ struct Win * win_shift = win_meta->active, * win_p, * win_p_next;
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;
+ uint16_t i, i_max;
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 *));
append_window(win_meta, wins[i]);
free(wins);
win_meta->active = win_shift; } }
+
+extern void reset_pad_offset(struct WinMeta * win_meta, uint16_t new_offset) {
+// Apply new_offset to windows pad, if it proves to be sane.
+ if (new_offset >= 0 && new_offset + win_meta->pad.size.x < getmaxx(win_meta->pad.curses_win))
+ win_meta->pad_offset = new_offset; }
projects / plomrogue / blobdiff