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Fix #3 #4

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Fix #3 #4

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ee9f6f4
Fixes suggested by CLion static analysis
rdoursenaud Jan 16, 2018
53a17d2
Make resolution change more robust
rdoursenaud Jan 17, 2018
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66 changes: 47 additions & 19 deletions crtc.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -28,8 +28,10 @@ bool CRTControllerManager::applyConfiguration(CRTControllerManager::DockState st
/*
* Step 0: Check config files
* Step 1: Open the right config file
* Step 3: Apply the crtc configuration
* Step 4: Apply the screen configuration
* Step 2: Parse the crtc configuration
* Step 3: Disable all crts
* Step 4: Resize the screen
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The screen size must be set AFTER altering the crtc config in any way.

So disable configs, set screen size, enable configs, set screen size

* Step 5: Apply the crtc configuration
*/

/* Step 0 */
Expand Down Expand Up @@ -58,7 +60,7 @@ bool CRTControllerManager::applyConfiguration(CRTControllerManager::DockState st
}


/* Step 3 */
/* Step 2 */

vector<IniSection*> configControllers = config.getSections("CRTC");

Expand Down Expand Up @@ -149,43 +151,38 @@ bool CRTControllerManager::applyConfiguration(CRTControllerManager::DockState st

}

/* Apply the configs */

if (!isControllerConfigValid) {
syslog(LOG_ERR, "Controller config is not valid, not committing changes to X\n");
return false;
}

/* Step 3 */

XGrabServer(display);

for (CRTConfig *controller : controllerConfigs) {

syslog(LOG_INFO, "Applying config to %4lu: mode: %4lu, outputs: %4zu, x: %4d, y: %4d\n",
controller->crtc, controller->mode, controller->noutputs, controller->x, controller->y);
syslog(LOG_INFO, "Disabling %4lu\n",
controller->crtc);

#ifndef DRYRUN

XRRSetCrtcConfig(display,
resources,
controller->crtc,
CurrentTime,
controller->x,
controller->y,
controller->mode,
controller->rotation,
controller->outputs,
(int) controller->noutputs); // cast: stack smashing: size_t (ul) copy into noutputs: int (d)
0,
0,
None,
RR_Rotate_0,
nullptr,
0);

#endif // DRYRUN

free(controller->outputs);
delete controller;

}

XUngrabServer(display);
XSync(display, 0);
XGrabServer(display);

/* Step 4 */

Expand All @@ -205,9 +202,40 @@ bool CRTControllerManager::applyConfiguration(CRTControllerManager::DockState st

#endif // DRYRUN

XUngrabServer(display);
XSync(display, 0);

/* Step 5 */

for (CRTConfig *controller : controllerConfigs) {

syslog(LOG_INFO, "Applying config to %4lu: mode: %4lu, outputs: %4zu, x: %4d, y: %4d\n",
controller->crtc, controller->mode, controller->noutputs, controller->x, controller->y);

#ifndef DRYRUN

if (controller->mode != 0) { // CRTC is to be enabled
XRRSetCrtcConfig(display,
resources,
controller->crtc,
CurrentTime,
controller->x,
controller->y,
controller->mode,
controller->rotation,
controller->outputs,
(int) controller->noutputs); // cast: stack smashing: size_t (ul) copy into noutputs: int (d)
}


#endif // DRYRUN

free(controller->outputs);
delete controller;

}

XSync(display, 0);
XUngrabServer(display);

return true;

Expand Down