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