isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-11-21 15:40:41 -05:00
Code Issues Packages Projects Releases Wiki Activity

MonitorXrandr: follow the right order in applying the new configuration

Browse Source 
First disable CRTCs that should be off in the new configuration,
then resize the framebuffer, then enable the new CRTCs.
If we don't do that, and we're making the screen smaller, X complains
with a BadMatch.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
This commit is contained in:
Giovanni Campagna 2013-08-16 19:02:57 +02:00 committed by Giovanni Campagna
parent 13557b39d0
commit 78b41e542b
1 changed files with 56 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
src/core/monitor-xrandr.c
View File

@ -660,10 +660,13 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
meta_display_grab (meta_get_display ());
/* First compute the new size of the screen (framebuffer) */
width = 0; height = 0;
for (i = 0; i < n_crtcs; i++)
{
MetaCRTCInfo *crtc_info = crtcs[i];
MetaCRTC *crtc = crtc_info->crtc;
crtc->dirty = TRUE;
if (crtc_info->mode == NULL)
continue;
@ -680,25 +683,19 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
}
}
g_assert (width > 0 && height > 0);
/* The 'physical size' of an X screen is meaningless if that screen
* can consist of many monitors. So just pick a size that make the
* dpi 96.
*
* Firefox and Evince apparently believe what X tells them.
*/
width_mm = (width / DPI_FALLBACK) * 25.4 + 0.5;
height_mm = (height / DPI_FALLBACK) * 25.4 + 0.5;
XRRSetScreenSize (manager_xrandr->xdisplay, DefaultRootWindow (manager_xrandr->xdisplay),
width, height, width_mm, height_mm);
/* Second disable all newly disabled CRTCs, or CRTCs that in the previous
configuration would be outside the new framebuffer (otherwise X complains
loudly when resizing)
CRTC will be enabled again after resizing the FB
*/
for (i = 0; i < n_crtcs; i++)
{
MetaCRTCInfo *crtc_info = crtcs[i];
MetaCRTC *crtc = crtc_info->crtc;
crtc->dirty = TRUE;
if (crtc_info->mode == NULL)
if (crtc_info->mode == NULL ||
crtc->rect.x + crtc->rect.width > width ||
crtc->rect.y + crtc->rect.height > height)
{
XRRSetCrtcConfig (manager_xrandr->xdisplay,
manager_xrandr->resources,
@ -709,7 +706,51 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
RR_Rotate_0,
NULL, 0);
}
else
}
/* Disable CRTCs not mentioned in the list */
for (i = 0; i < manager->n_crtcs; i++)
{
MetaCRTC *crtc = &manager->crtcs[i];
if (crtc->dirty)
{
crtc->dirty = FALSE;
continue;
}
if (crtc->current_mode == NULL)
continue;
XRRSetCrtcConfig (manager_xrandr->xdisplay,
manager_xrandr->resources,
(XID)crtc->crtc_id,
manager_xrandr->time,
0, 0,
None,
RR_Rotate_0,
NULL, 0);
}
g_assert (width > 0 && height > 0);
/* The 'physical size' of an X screen is meaningless if that screen
* can consist of many monitors. So just pick a size that make the
* dpi 96.
*
* Firefox and Evince apparently believe what X tells them.
*/
width_mm = (width / DPI_FALLBACK) * 25.4 + 0.5;
height_mm = (height / DPI_FALLBACK) * 25.4 + 0.5;
meta_error_trap_push (meta_get_display ());
XRRSetScreenSize (manager_xrandr->xdisplay, DefaultRootWindow (manager_xrandr->xdisplay),
width, height, width_mm, height_mm);
meta_error_trap_pop (meta_get_display ());
for (i = 0; i < n_crtcs; i++)
{
MetaCRTCInfo *crtc_info = crtcs[i];
MetaCRTC *crtc = crtc_info->crtc;
if (crtc_info->mode != NULL)
{
MetaMonitorMode *mode;
XID *outputs;
@ -761,29 +802,6 @@ meta_monitor_manager_xrandr_apply_configuration (MetaMonitorManager *manager,
output_info->is_presentation);
}
/* Disable CRTCs not mentioned in the list */
for (i = 0; i < manager->n_crtcs; i++)
{
MetaCRTC *crtc = &manager->crtcs[i];
if (crtc->dirty)
{
crtc->dirty = FALSE;
continue;
}
if (crtc->current_mode == NULL)
continue;
XRRSetCrtcConfig (manager_xrandr->xdisplay,
manager_xrandr->resources,
(XID)crtc->crtc_id,
manager_xrandr->time,
0, 0,
None,
RR_Rotate_0,
NULL, 0);
}
meta_display_ungrab (meta_get_display ());
}