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#include <curses.h>
#include <stdlib.h>
#include <assert.h>
#include "ui.internal.h"
struct ui_window_root *ui_root = NULL;
void ui__default_draw_proc(struct ui_window_base *base)
{
redrawwin(base->cwindow);
wrefresh(base->cwindow);
}
void ui__init_window_base(struct ui_window_base *base)
{
base->type = UI__WINDOW_TYPE_BASE;
base->parent = NULL;
base->cwindow = NULL;
base->draw_proc = &ui__default_draw_proc;
base->layout_proc = NULL;
}
void ui__init_window_dock(struct ui_window_dock *dock)
{
ui__init_window_base(&dock->super);
dock->super.type = UI__WINDOW_TYPE_DOCK;
dock->super.draw_proc = &ui__dock_default_draw_proc;
dock->super.layout_proc = &ui__dock_default_layout_proc;
for (unsigned i = 0; i < UI__WINDOW_DOCK_MAX; ++i)
{
dock->children[i] = NULL;
dock->childsizes[i] = 0.0;
}
dock->focus = UI__WINDOW_FOCUS_NONE;
}
void ui__init_window_root(struct ui_window_root *root)
{
ui__init_window_dock(&root->super);
root->super.super.type = UI__WINDOW_TYPE_ROOT;
root->super.super.draw_proc = &ui__root_draw_proc;
root->super.super.layout_proc = &ui__root_layout_proc;
root->floating = NULL;
}
/* type-specific destructors */
void ui__destroy_window_base(struct ui_window_base *base);
void ui__destroy_window_dock(struct ui_window_dock *dock);
void ui__window_destroy_root(struct ui_window_root *root)
{
if (root->floating)
ui__destroy_window(root->floating);
ui__destroy_window_dock(&root->super);
}
void ui__destroy_window_dock(struct ui_window_dock *dock)
{
for (unsigned i = 0; i < UI__WINDOW_DOCK_MAX; ++i)
{
if (dock->children[i]) ui__destroy_window(dock->children[i]);
dock->children[i] = NULL;
}
ui__destroy_window_base(&dock->super);
}
void ui__destroy_window_base(struct ui_window_base *base)
{
delwin(base->cwindow);
free(base);
}
void ui__destroy_window(struct ui_window_base *base)
{
if (!base) return;
switch (base->type)
{
case UI__WINDOW_TYPE_ROOT:
ui__window_destroy_root((struct ui_window_root *)base);
break;
case UI__WINDOW_TYPE_DOCK:
ui__destroy_window_dock((struct ui_window_dock *)base);
break;
case UI__WINDOW_TYPE_BASE:
ui__destroy_window_base(base);
}
}
/* the focused window MUST be a leaf window, or the screen will get clobbered.
* This is because the focused window will have methods like getch() called on it,
* which brings it to the "foreground", squashing whatever is behind it. */
struct ui_window_base *ui__find_focused(void)
{
struct ui_window_base *window = (struct ui_window_base *)ui_root;
if (ui_root->floating) return ui_root->floating;
while (true)
{
switch (window->type)
{
case UI__WINDOW_TYPE_DOCK:
case UI__WINDOW_TYPE_ROOT:
{
struct ui_window_dock *dock = (struct ui_window_dock *)window;
if (dock->focus == UI__WINDOW_FOCUS_NONE || !dock->children[dock->focus])
{
for (unsigned i = 0; i < UI__WINDOW_DOCK_MAX; ++i)
{
if (dock->children[i])
{
dock->focus = i; /* focus the child (skip fallback return statement) */
goto childfound;
}
}
return (struct ui_window_base *)dock; /* the dock is focused if it is really a leaf */
}
childfound:
window = dock->children[dock->focus];
break;
}
default:
return window; /* a leaf window is focused */
}
}
}
void ui__call_draw_proc(struct ui_window_base *base)
{
if (base->draw_proc)
{
(*base->draw_proc)(base);
}
}
void ui__call_layout_proc(struct ui_window_base *base)
{
if (base->layout_proc)
{
(*base->layout_proc)(base);
}
}
void ui__traces_draw_proc(struct ui_window_base *base)
{
box(base->cwindow, 0, 0);
int maxy, maxx;
mvwaddstr(base->cwindow, 0, 2, "Traces");
getmaxyx(base->cwindow, maxy, maxx);
for (int i = 1; i < maxy-1; ++i)
{
mvwhline(base->cwindow, i, 1, '%', maxx-2);
}
touchwin(base->cwindow);
wrefresh(base->cwindow);
}
void ui_init(void)
{
ui_root = malloc(sizeof(struct ui_window_root)); /* TODO: check */
assert(ui_root);
initscr();
raw();
noecho();
keypad(stdscr, TRUE);
curs_set(0);
ui__init_window_root(ui_root);
ui_root->super.super.cwindow = stdscr; /* initialize the ncurses window ourselves */
/* set up UI */
for (int i = 0; i < UI__WINDOW_DOCK_MAX; ++i)
{
if (i == UI__WINDOW_DOCK_LEFT) continue;
struct ui_window_base *win_traces = malloc(sizeof(struct ui_window_base));
ui__init_window_base(win_traces);
ui__dock_add_child((struct ui_window_dock *)ui_root, win_traces, i, 1./5);
win_traces->draw_proc = &ui__traces_draw_proc;
}
ui__call_draw_proc((struct ui_window_base *)ui_root);
}
void ui_handle(void)
{
while (true)
{
struct ui_window_base *window = ui__find_focused();
#ifdef NCURSES_WIDE
wint_t inp;
wget_wch(window->cwindow, &inp);
#else
int inp = wgetch(window->cwindow);
#endif
if (inp == NS('q'))
{
break;
}
else if (inp == KEY_RESIZE)
{
ui__call_layout_proc((struct ui_window_base *)ui_root);
ui__call_draw_proc((struct ui_window_base *)ui_root);
}
}
ui__window_destroy_root(ui_root);
ui_root = NULL;
endwin();
}
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