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/*
* Ion xrandr module
* Copyright (C) 2004 Ragnar Rova
* 2005-2007 Tuomo Valkonen
*
* by Ragnar Rova <rr@mima.x.se>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License,or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not,write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <limits.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/extensions/Xrandr.h>
#include <libtu/rb.h>
#include <ioncore/common.h>
#include <ioncore/eventh.h>
#include <ioncore/global.h>
#include <ioncore/event.h>
#include <ioncore/mplex.h>
#include <ioncore/xwindow.h>
#include <ioncore/../version.h>
char mod_xrandr_ion_api_version[]=ION_API_VERSION;
WHook *randr_screen_change_notify=NULL;
static bool hasXrandR=FALSE;
static int xrr_event_base;
static int xrr_error_base;
Rb_node rotations=NULL;
static int rr2scrrot(int rr)
{
switch(rr){
case RR_Rotate_0: return SCREEN_ROTATION_0;
case RR_Rotate_90: return SCREEN_ROTATION_90;
case RR_Rotate_180: return SCREEN_ROTATION_180;
case RR_Rotate_270: return SCREEN_ROTATION_270;
default: return SCREEN_ROTATION_0;
}
}
static void insrot(int id, int r)
{
Rb_node node;
node=rb_inserti(rotations, id, NULL);
if(node!=NULL)
node->v.ival=r;
}
bool handle_xrandr_event(XEvent *ev)
{
if(hasXrandR && ev->type == xrr_event_base + RRScreenChangeNotify) {
XRRScreenChangeNotifyEvent *rev=(XRRScreenChangeNotifyEvent *)ev;
WFitParams fp;
WScreen *screen;
bool pivot=FALSE;
screen=XWINDOW_REGION_OF_T(rev->root, WScreen);
if(screen!=NULL){
int r;
Rb_node node;
int found;
r=rr2scrrot(rev->rotation);
fp.g.x=REGION_GEOM(screen).x;
fp.g.y=REGION_GEOM(screen).y;
if(rev->rotation==RR_Rotate_90 || rev->rotation==RR_Rotate_270){
fp.g.w=rev->height;
fp.g.h=rev->width;
}else{
fp.g.w=rev->width;
fp.g.h=rev->height;
}
fp.mode=REGION_FIT_EXACT;
node=rb_find_ikey_n(rotations, screen->id, &found);
if(!found){
insrot(screen->id, r);
}else if(r!=node->v.ival){
int or=node->v.ival;
fp.mode|=REGION_FIT_ROTATE;
fp.rotation=(r>or
? SCREEN_ROTATION_0+r-or
: (SCREEN_ROTATION_270+1)+r-or);
node->v.ival=r;
}
REGION_GEOM(screen)=fp.g;
mplex_managed_geom((WMPlex*)screen, &(fp.g));
mplex_do_fit_managed((WMPlex*)screen, &fp);
}
hook_call_v(randr_screen_change_notify);
return TRUE;
}
return FALSE;
}
static bool check_pivots()
{
WScreen *scr;
XRRScreenConfiguration *cfg;
rotations=make_rb();
if(rotations==NULL)
return FALSE;
FOR_ALL_SCREENS(scr){
Rotation rot=RR_Rotate_90;
int randr_screen_id = XRRRootToScreen(ioncore_g.dpy, ((WMPlex*) scr)->win.win);
if (randr_screen_id != -1)
XRRRotations(ioncore_g.dpy, randr_screen_id, &rot);
insrot(scr->id, rr2scrrot(rot));
}
return TRUE;
}
#define INIT_HOOK_(NM) \
NM=mainloop_register_hook(#NM, create_hook()); \
if(NM==NULL) return FALSE
bool mod_xrandr_init()
{
hasXrandR=
XRRQueryExtension(ioncore_g.dpy,&xrr_event_base,&xrr_error_base);
if(!check_pivots())
return FALSE;
if(hasXrandR){
XRRSelectInput(ioncore_g.dpy,ioncore_g.rootwins->dummy_win,
RRScreenChangeNotifyMask);
}else{
warn_obj("mod_xrandr","XRandR is not supported on this display");
}
hook_add(ioncore_handle_event_alt,(WHookDummy *)handle_xrandr_event);
INIT_HOOK_(randr_screen_change_notify);
return TRUE;
}
bool mod_xrandr_deinit()
{
hook_remove(ioncore_handle_event_alt,
(WHookDummy *)handle_xrandr_event);
return TRUE;
}
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