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#include <stdlib.h>
#include <assert.h>
#include "ui.internal.h"
unsigned ui__dock_position_opposite(unsigned position)
{
switch (position)
{
case UI__WINDOW_DOCK_TOP:
return UI__WINDOW_DOCK_BOTTOM;
case UI__WINDOW_DOCK_BOTTOM:
return UI__WINDOW_DOCK_TOP;
case UI__WINDOW_DOCK_LEFT:
return UI__WINDOW_DOCK_RIGHT;
case UI__WINDOW_DOCK_RIGHT:
return UI__WINDOW_DOCK_LEFT;
default:
abort(); /* trap: the center dock has no opposite! (or position is invalid) */
}
}
void ui__dock_adjust(struct ui_window_dock *dock, unsigned flags, int *maxy, int *maxx, int *begy, int *begx)
{
if (flags & 1)
{
if (dock->children[UI__WINDOW_DOCK_TOP])
{
unsigned top_maxy = getmaxy(dock->children[UI__WINDOW_DOCK_TOP]->cwindow);
*maxy -= top_maxy;
*begy += top_maxy;
}
if (dock->children[UI__WINDOW_DOCK_BOTTOM])
{
unsigned bottom_maxy = getmaxy(dock->children[UI__WINDOW_DOCK_BOTTOM]->cwindow);
*maxy -= bottom_maxy;
}
}
if (flags & 2)
{
if (dock->children[UI__WINDOW_DOCK_LEFT])
{
unsigned left_maxx = getmaxx(dock->children[UI__WINDOW_DOCK_LEFT]->cwindow);
*maxx -= left_maxx;
*begx += left_maxx;
}
if (dock->children[UI__WINDOW_DOCK_RIGHT])
{
unsigned right_maxx = getmaxx(dock->children[UI__WINDOW_DOCK_RIGHT]->cwindow);
*maxx -= right_maxx;
}
}
}
/* This is hand-coded to fit with the window priorities, as specified here in ascending order:
* - Top/bottom
* - Left/right
* - Center
*
* Note that other methods (layout proc namely) require this same order to be present in the values of the dock constants. */
WINDOW *ui__dock_place_window(struct ui_window_dock *dock, unsigned position, float size)
{
int maxy, maxx;
int begy, begx;
int out_lines, out_cols;
int out_y, out_x;
getmaxyx(dock->super.cwindow, maxy, maxx);
getbegyx(dock->super.cwindow, begy, begx);
switch (position)
{
case UI__WINDOW_DOCK_TOP:
out_lines = maxy * size;
out_y = begy;
out_cols = maxx;
out_x = begx;
break;
case UI__WINDOW_DOCK_BOTTOM:
out_lines = maxy * size;
out_y = maxy - out_lines + begy;
out_cols = maxx;
out_x = begx;
break;
case UI__WINDOW_DOCK_LEFT:
ui__dock_adjust(dock, 1, &maxy, &maxx, &begy, &begx);
out_lines = maxy;
out_y = begy;
out_cols = maxx * size;
out_x = begx;
break;
case UI__WINDOW_DOCK_RIGHT:
ui__dock_adjust(dock, 1, &maxy, &maxx, &begy, &begx);
out_lines = maxy;
out_y = begy;
out_cols = maxx * size;
out_x = maxx - out_cols + begx;
break;
case UI__WINDOW_DOCK_CENTER:
ui__dock_adjust(dock, 3, &maxy, &maxx, &begy, &begx);
out_lines = maxy;
out_y = begy;
out_cols = maxx;
out_x = begx;
break;
default:
assert(false);
}
return newwin(out_lines, out_cols, out_y, out_x);
}
void ui__dock_add_child(struct ui_window_dock *dock, struct ui_window_base *child, unsigned position, float size)
{
assert(!dock->children[position]); /* TODO: handle gracefully (technically invalid usage) */
assert(!child->parent); /* TODO: take this window from its current parent */
assert(!child->cwindow);
child->parent = (struct ui_window_base *)dock;
dock->children[position] = child;
dock->childsizes[position] = size;
if (position != UI__WINDOW_DOCK_CENTER)
{
unsigned opposite = ui__dock_position_opposite(position);
if (dock->children[opposite] && size + dock->childsizes[opposite] > 1)
{
dock->childsizes[position] = 1 - dock->childsizes[opposite];
}
}
/* now set up the window for this child */
child->cwindow = ui__dock_place_window(dock, position, size);
}
void ui__dock_default_draw_proc(struct ui_window_base *base)
{
struct ui_window_dock *dock = ui__cast(dock, base);
wrefresh(dock->super.cwindow);
for (unsigned i = 0; i < UI__WINDOW_DOCK_MAX; ++i)
{
if (dock->children[i])
ui__call_draw_proc(dock->children[i]);
}
}
void ui__dock_default_layout_proc(struct ui_window_base *base)
{
struct ui_window_dock *dock = ui__cast(dock, base);
/* fix the layout of children */
for (unsigned i = 0; i < UI__WINDOW_DOCK_MAX; ++i)
{
struct ui_window_base *child = dock->children[i];
if (!child) continue;
delwin(child->cwindow);
child->cwindow = ui__dock_place_window(dock, i, dock->childsizes[i]);
ui__call_layout_proc(child);
}
}
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