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x11: implement screen orientation support

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This commit is contained in:
Brad Parker 2019-02-22 19:12:52 -05:00
parent 4f0d61a2ac
commit 76ca37aaee
1 changed files with 95 additions and 5 deletions
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100
gfx/display_servers/dispserv_x11.c
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@ -1,7 +1,7 @@
/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2016-2017 - Brad Parker
* Copyright (C) 2016-2019 - Brad Parker
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
@ -15,19 +15,20 @@
* If not, see <http://www.gnu.org/licenses/>.
*/
/* We are targeting XRandR 1.2 here. */
#include <compat/strl.h>
#include <sys/types.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h> /* run pkg-config --static --libs xrandr */
#include <X11/extensions/randr.h>
#include <X11/extensions/Xrender.h>
#include "../../config.h"
#ifdef HAVE_XRANDR
#include <X11/extensions/Xrandr.h>
#include <X11/extensions/randr.h>
#include <X11/extensions/Xrender.h>
#endif
#include "../video_display_server.h"
@ -358,10 +359,95 @@ const char *x11_display_server_get_output_options(void *data)
#endif
}
#ifdef HAVE_XRANDR
static void x11_display_server_set_screen_orientation(enum rotation rotation)
{
(void)rotation;
int i, j, num_sizes = 0;
XRRScreenResources *screen;
XRRScreenConfiguration *config = XRRGetScreenInfo(g_x11_dpy, DefaultRootWindow(g_x11_dpy));
XRRScreenSize *sizes = XRRConfigSizes(config, &num_sizes);
double dpi = (25.4 * DisplayHeight(g_x11_dpy, DefaultScreen(g_x11_dpy))) / DisplayHeightMM(g_x11_dpy, DefaultScreen(g_x11_dpy));
XGrabServer(g_x11_dpy);
screen = XRRGetScreenResources(g_x11_dpy, DefaultRootWindow(g_x11_dpy));
for (i = 0; i < screen->noutput; i++)
{
XRROutputInfo *info = XRRGetOutputInfo(g_x11_dpy, screen, screen->outputs[i]);
if (info->connection != RR_Connected)
{
XRRFreeOutputInfo(info);
continue;
}
for (j = 0; j < info->ncrtc; j++)
{
XRRCrtcInfo *crtc = XRRGetCrtcInfo(g_x11_dpy, screen, screen->crtcs[j]);
Rotation new_rotation = RR_Rotate_0;
if (crtc->width == 0 || crtc->height == 0)
{
XRRFreeCrtcInfo(crtc);
continue;
}
switch (rotation)
{
case ORIENTATION_NORMAL:
default:
if (crtc->rotations & RR_Rotate_0)
new_rotation = RR_Rotate_0;
break;
case ORIENTATION_VERTICAL:
if (crtc->rotations & RR_Rotate_270)
new_rotation = RR_Rotate_270;
break;
case ORIENTATION_FLIPPED:
if (crtc->rotations & RR_Rotate_180)
new_rotation = RR_Rotate_180;
break;
case ORIENTATION_FLIPPED_ROTATED:
if (crtc->rotations & RR_Rotate_90)
new_rotation = RR_Rotate_90;
break;
}
XRRSetCrtcConfig(g_x11_dpy, screen, screen->crtcs[j], CurrentTime, 0, 0, None, RR_Rotate_0, NULL, 0);
if ((crtc->rotation & RR_Rotate_0 || crtc->rotation & RR_Rotate_180) && (rotation == ORIENTATION_VERTICAL || rotation == ORIENTATION_FLIPPED_ROTATED))
{
unsigned width = crtc->width;
crtc->width = crtc->height;
crtc->height = width;
}
else if ((crtc->rotation & RR_Rotate_90 || crtc->rotation & RR_Rotate_270) && (rotation == ORIENTATION_NORMAL || rotation == ORIENTATION_FLIPPED))
{
unsigned width = crtc->width;
crtc->width = crtc->height;
crtc->height = width;
}
crtc->rotation = new_rotation;
XRRSetScreenSize(g_x11_dpy, DefaultRootWindow(g_x11_dpy), crtc->width, crtc->height, (25.4 * crtc->width) / dpi, (25.4 * crtc->height) / dpi);
XRRSetCrtcConfig(g_x11_dpy, screen, screen->crtcs[j], CurrentTime, crtc->x, crtc->y, crtc->mode, crtc->rotation, crtc->outputs, crtc->noutput);
XRRFreeCrtcInfo(crtc);
}
XRRFreeOutputInfo(info);
}
XRRFreeScreenResources(screen);
XUngrabServer(g_x11_dpy);
XSync(g_x11_dpy, False);
XRRFreeScreenConfigInfo(config);
}
#endif
const video_display_server_t dispserv_x11 = {
x11_display_server_init,
@ -372,6 +458,10 @@ const video_display_server_t dispserv_x11 = {
x11_display_server_set_resolution,
NULL, /* get_resolution_list */
x11_display_server_get_output_options,
#ifdef HAVE_XRANDR
x11_display_server_set_screen_orientation,
#else
NULL,
#endif
"x11"
};