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/*
* vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
*/
#include "e.h"
static void _e_xinerama_clean(void);
static void _e_xinerama_update(void);
static Evas_List *all_screens = NULL;
static Evas_List *chosen_screens = NULL;
static Evas_List *fake_screens = NULL;
int
e_xinerama_init(void)
{
_e_xinerama_update();
return 1;
}
int
e_xinerama_shutdown(void)
{
_e_xinerama_clean();
return 1;
}
void
e_xinerama_update(void)
{
_e_xinerama_clean();
_e_xinerama_update();
}
const Evas_List *
e_xinerama_screens_get(void)
{
if (fake_screens) return fake_screens;
return chosen_screens;
}
const Evas_List *
e_xinerama_screens_all_get(void)
{
if (fake_screens) return fake_screens;
return all_screens;
}
void
e_xinerama_fake_screen_add(int x, int y, int w, int h)
{
E_Screen *scr;
scr = calloc(1, sizeof(E_Screen));
scr->screen = evas_list_count(fake_screens);
scr->x = x;
scr->y = y;
scr->w = w;
scr->h = h;
fake_screens = evas_list_append(fake_screens, scr);
}
/* local subsystem functions */
static void
_e_xinerama_clean(void)
{
while (all_screens)
{
free(all_screens->data);
all_screens = evas_list_remove_list(all_screens, all_screens);
}
while (chosen_screens)
{
chosen_screens = evas_list_remove_list(chosen_screens, chosen_screens);
}
}
static void
_e_xinerama_update(void)
{
int n;
Ecore_X_Window *roots;
Evas_List *l;
roots = ecore_x_window_root_list(&n);
if (roots)
{
int i;
int rw, rh;
Ecore_X_Window root;
/* more than 1 root window - xinerama wont be active */
if (n > 1)
{
free(roots);
return;
}
/* first (and only) root window */
root = roots[0];
free(roots);
/* get root size */
ecore_x_window_size_get(root, &rw, &rh);
/* get number of xinerama screens */
n = ecore_x_xinerama_screen_count_get();
if (n < 1)
{
E_Screen *scr;
scr = calloc(1, sizeof(E_Screen));
scr->screen = 0;
scr->x = 0;
scr->y = 0;
scr->w = rw;
scr->h = rh;
all_screens = evas_list_append(all_screens, scr);
}
else
{
for (i = 0; i < n; i++)
{
int x, y, w, h;
/* get each xinerama screen geometry */
if (ecore_x_xinerama_screen_geometry_get(i, &x, &y, &w, &h))
{
E_Screen *scr;
printf("E17 INIT: XINERAMA SCREEN: [%i], %ix%i+%i+%i\n",
i, w, h, x, y);
/* add it to our list */
scr = calloc(1, sizeof(E_Screen));
scr->screen = i;
scr->x = x;
scr->y = y;
scr->w = w;
scr->h = h;
all_screens = evas_list_append(all_screens, scr);
}
}
}
}
/* now go through all_screens... and build a list of chosen screens */
for (l = all_screens; l; l = l->next)
{
Evas_List *ll;
E_Screen *scr;
int add = 0;
Evas_List *removes;
scr = l->data;
add = 1;
removes = NULL;
/* does this screen intersect with any we have chosen? */
for (ll = chosen_screens; ll; ll = ll->next)
{
E_Screen *scr2;
scr2 = ll->data;
/* if they intersect */
if (E_INTERSECTS(scr->x, scr->y, scr->w, scr->h,
scr2->x, scr2->y, scr2->w, scr2->h))
{
int sz, sz2;
/* calculate pixel area */
sz = scr->w * scr->h;
sz2 = scr2->w * scr2->h;
/* if the one we already have is bigger, DONT add the new */
if (sz2 >= sz)
add = 0;
/* add the old to a list to remove */
else
removes = evas_list_append(removes, scr);
}
}
/* if there are screens to remove - remove them */
while (removes)
{
chosen_screens = evas_list_remove(chosen_screens, removes->data);
removes = evas_list_remove_list(removes, removes);
}
/* if this screen is to be added, add it */
if (add)
{
printf("E17 INIT: XINERAMA CHOSEN: [%i], %ix%i+%i+%i\n",
scr->screen, scr->w, scr->h, scr->x, scr->y);
chosen_screens = evas_list_append(chosen_screens, scr);
}
}
}
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