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enlightenment/src/bin/e_randr_12_crtc.c

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#include "e_randr_private.h"
#include "e_randr.h"
// E_Randr_Crtc_Info helper functions
static Eina_Bool _crtc_mode_intersects_crtcs(E_Randr_Crtc_Info *crtc_info, Ecore_X_Randr_Mode_Info *mode);
static Eina_Bool _crtc_outputs_mode_max_set(E_Randr_Crtc_Info *crtc_info);
void
_crtc_outputs_refs_set(E_Randr_Crtc_Info *crtc_info)
{
E_Randr_Output_Info *output_info = NULL;
Ecore_X_Randr_Output *outputs = NULL;
int noutputs;
EINA_SAFETY_ON_NULL_RETURN(crtc_info);
outputs = ecore_x_randr_crtc_outputs_get(e_randr_screen_info.root, crtc_info->xid, &noutputs);
while (--noutputs >= 0)
{
output_info = _12_screen_info_output_info_get(outputs[noutputs]);
if (!output_info)
fprintf(stderr, "E_RANDR: Could not find output struct for output %d.\n", outputs[noutputs]);
crtc_info->outputs = eina_list_append(crtc_info->outputs, output_info);
}
crtc_info->outputs_common_modes = _outputs_common_modes_get(crtc_info->outputs, NULL);
}
void
_crtc_refs_set(E_Randr_Crtc_Info *crtc_info)
{
Ecore_X_Randr_Mode mode = Ecore_X_Randr_None;
Ecore_X_Randr_Mode_Info *mode_info = NULL;
Ecore_X_Randr_Output *poutputs = NULL;
E_Randr_Output_Info *output_info = NULL;
int npoutputs;
EINA_SAFETY_ON_NULL_RETURN(crtc_info);
mode = ecore_x_randr_crtc_mode_get(e_randr_screen_info.root, crtc_info->xid);
if (!(mode_info = _12_screen_info_mode_info_get(mode)))
{
//Mode unknown to the global structure, so add it
mode_info = ecore_x_randr_mode_info_get(e_randr_screen_info.root, mode);
e_randr_screen_info.rrvd_info.randr_info_12->modes = eina_list_append(e_randr_screen_info.rrvd_info.randr_info_12->modes, mode_info);
}
crtc_info->current_mode = mode_info;
poutputs = ecore_x_randr_crtc_possible_outputs_get(e_randr_screen_info.root, crtc_info->xid, &npoutputs);
while (--npoutputs >= 0)
{
output_info = _12_screen_info_output_info_get(poutputs[npoutputs]);
if (!output_info)
fprintf(stderr, "E_RANDR: Could not find output struct for output %d.\n", poutputs[npoutputs]);
crtc_info->possible_outputs = eina_list_append(crtc_info->possible_outputs, output_info);
}
_crtc_outputs_refs_set(crtc_info);
}
/**
* @brief Allocate and init with values.
* @param crtc the crtc the display is queried for. If Ecore_X_Randr_None is
* given, a struct with only the xid will be set
* @return E_Randr_Crtc_Info element
*/
E_Randr_Crtc_Info *
_crtc_info_new(Ecore_X_Randr_Crtc crtc)
{
E_Randr_Crtc_Info *crtc_info = NULL;
EINA_SAFETY_ON_TRUE_RETURN_VAL(E_RANDR_12_NO, NULL);
crtc_info = E_NEW(E_Randr_Crtc_Info, 1);
EINA_SAFETY_ON_TRUE_RETURN_VAL((crtc == Ecore_X_Randr_None), crtc_info);
crtc_info->xid = crtc;
crtc_info->panning.x = Ecore_X_Randr_Unset;
crtc_info->panning.y = Ecore_X_Randr_Unset;
crtc_info->panning.w = Ecore_X_Randr_Unset;
crtc_info->panning.h = Ecore_X_Randr_Unset;
crtc_info->tracking.x = Ecore_X_Randr_Unset;
crtc_info->tracking.y = Ecore_X_Randr_Unset;
crtc_info->tracking.w = Ecore_X_Randr_Unset;
crtc_info->tracking.h = Ecore_X_Randr_Unset;
crtc_info->border.x = Ecore_X_Randr_Unset;
crtc_info->border.y = Ecore_X_Randr_Unset;
crtc_info->border.w = Ecore_X_Randr_Unset;
crtc_info->border.h = Ecore_X_Randr_Unset;
crtc_info->gamma_ramps = NULL;
crtc_info->gamma_ramp_size = Ecore_X_Randr_Unset;
crtc_info->outputs = NULL;
crtc_info->possible_outputs = NULL;
crtc_info->outputs_common_modes = NULL;
crtc_info->current_mode = NULL;
ecore_x_randr_crtc_geometry_get(e_randr_screen_info.root, crtc_info->xid, &crtc_info->geometry.x, &crtc_info->geometry.y, &crtc_info->geometry.w, &crtc_info->geometry.h);
crtc_info->current_orientation = ecore_x_randr_crtc_orientation_get(e_randr_screen_info.root, crtc_info->xid);
crtc_info->orientations = ecore_x_randr_crtc_orientations_get(e_randr_screen_info.root, crtc_info->xid);
return crtc_info;
}
/**
* @param crtc_info the crtc info to be freed.
*/
void
_crtc_info_free(E_Randr_Crtc_Info *crtc_info)
{
EINA_SAFETY_ON_NULL_RETURN(crtc_info);
if (crtc_info->gamma_ramps) free(crtc_info->gamma_ramps);
if (crtc_info->outputs)
{
eina_list_free(crtc_info->outputs);
crtc_info->outputs = NULL;
}
if (crtc_info->possible_outputs)
{
eina_list_free(crtc_info->possible_outputs);
crtc_info->possible_outputs = NULL;
}
}
/*
* returns EINA_TRUE if given CRTC would intersect with other CRTCs if set to
* given mode
*/
static Eina_Bool
_crtc_mode_intersects_crtcs(E_Randr_Crtc_Info *crtc_info, Ecore_X_Randr_Mode_Info *mode)
{
Eina_List *iter;
E_Randr_Crtc_Info *tmp;
EINA_LIST_FOREACH(e_randr_screen_info.rrvd_info.randr_info_12->crtcs, iter, tmp)
{
if ((tmp == crtc_info) ||
((tmp->geometry.w <= 0) || (tmp->geometry.h <= 0)))
continue;
if (E_INTERSECTS(crtc_info->geometry.x, crtc_info->geometry.y,
mode->width, mode->height, tmp->geometry.x,
tmp->geometry.y, tmp->geometry.w, tmp->geometry.h)
&& ((crtc_info->geometry.x != tmp->geometry.x) &&
(crtc_info->geometry.y != tmp->geometry.y)))
return EINA_TRUE;
}
return EINA_FALSE;
}
/*
* reconfigures a CRTC enabling the highest resolution amongst its outputs,
* without touching any other CRTC currently activated
*/
static Eina_Bool
_crtc_outputs_mode_max_set(E_Randr_Crtc_Info *crtc_info)
{
Ecore_X_Randr_Mode_Info *mode_info;
Eina_List *iter;
Eina_Bool ret = EINA_TRUE;
Ecore_X_Randr_Output *outputs;
if (!crtc_info || !crtc_info->outputs || !crtc_info->outputs_common_modes) return EINA_FALSE;
EINA_LIST_REVERSE_FOREACH(crtc_info->outputs_common_modes, iter, mode_info)
{
if (!_crtc_mode_intersects_crtcs(crtc_info, mode_info))
break;
}
if (!mode_info)
{
//eina_list_free(crtc_info->outputs_common_modes);
return EINA_FALSE;
}
if ((outputs = _outputs_to_array(crtc_info->outputs)))
{
ret = ecore_x_randr_crtc_mode_set(e_randr_screen_info.root, crtc_info->xid, outputs, eina_list_count(crtc_info->outputs), mode_info->xid);
free(outputs);
}
//eina_list_free(crtc_info->outputs_common_modes);
//crtc_info->outputs_common_modes = NULL;
ecore_x_randr_screen_reset(e_randr_screen_info.root);
return ret;
}
/*
* reconfigure screen setup according to policy. This is only required if all
* CRTCs' positions might be affected by the another screens' movement. This includes 'virtual' moves,
* which means that e.g. when a crtc should be placed at a position < 0, all
* other crtcs are accordingly moved instead, so the result is the same.
*/
const Eina_Bool
_crtc_move_policy(E_Randr_Crtc_Info *new_crtc)
{
const E_Randr_Crtc_Info *crtc_rel;
E_Randr_Output_Info *first_output = NULL;
int dx = Ecore_X_Randr_None, dy = Ecore_X_Randr_None;
Eina_Bool ret = EINA_TRUE;
//use the policy of the new crtc's first output
first_output = (E_Randr_Output_Info *)eina_list_data_get(new_crtc->outputs);
if (!first_output)
return EINA_FALSE;
//get the crtc we will place our's relative to. If it's NULL, this is the
//only output attached, work done.
if (!(crtc_rel = _crtc_according_to_policy_get(new_crtc, first_output->policy)))
return EINA_TRUE;
//following is policy dependend.
switch (first_output->policy)
{
case ECORE_X_RANDR_OUTPUT_POLICY_ABOVE:
dy = (crtc_rel->geometry.y - new_crtc->geometry.h);
if (dy < 0)
{
//virtual move (move other CRTCs as nessesary)
dy = -dy;
ret = ecore_x_randr_move_all_crtcs_but(e_randr_screen_info.root,
&new_crtc->xid,
1,
dx,
dy);
}
break;
case ECORE_X_RANDR_OUTPUT_POLICY_LEFT:
dx = (crtc_rel->geometry.x - new_crtc->geometry.w);
if (dx < 0)
{
//virtual move (move other CRTCs as nessesary)
dx = -dx;
ret = ecore_x_randr_move_all_crtcs_but(e_randr_screen_info.root,
&new_crtc->xid,
1,
dx,
dy);
}
break;
default:
break;
}
ret &= ecore_x_randr_crtc_pos_relative_set(e_randr_screen_info.root, new_crtc->xid, crtc_rel->xid, first_output->policy, e_randr_screen_info.rrvd_info.randr_info_12->alignment);
return ret;
}
/*
* this retrieves a CRTC depending on a policy.
* Note that this is enlightenment specific! Enlightenment doesn't 'allow' zones
* to overlap. Thus we always use the output with the most extreme position
* instead of trying to fill gaps like tetris. Though this could be done by
* simply implementing another policy.
*
* Simply put: get the
* -right
* -left
* -top
* -bottom
* most CRTC and return it.
*/
const E_Randr_Crtc_Info *
_crtc_according_to_policy_get(E_Randr_Crtc_Info *but, Ecore_X_Randr_Output_Policy policy)
{
Eina_List *iter, *possible_crtcs = NULL;
E_Randr_Crtc_Info *crtc_info, *ret = NULL;
EINA_SAFETY_ON_TRUE_RETURN_VAL(E_RANDR_12_NO_CRTCS, NULL);
//get any crtc that besides 'but' to start with
possible_crtcs = eina_list_clone(e_randr_screen_info.rrvd_info.randr_info_12->crtcs);
possible_crtcs = eina_list_remove(possible_crtcs, but);
if ((eina_list_count(possible_crtcs) == 0) && (policy != ECORE_X_RANDR_OUTPUT_POLICY_CLONE))
{
eina_list_free(possible_crtcs);
return NULL;
}
// get an initial value for ret
ret = (E_Randr_Crtc_Info*)eina_list_data_get(eina_list_last(possible_crtcs));
switch (policy)
{
case ECORE_X_RANDR_OUTPUT_POLICY_ABOVE:
EINA_LIST_FOREACH(e_randr_screen_info.rrvd_info.randr_info_12->crtcs, iter, crtc_info)
{
if (crtc_info->geometry.y < ret->geometry.y)
ret = crtc_info;
}
break;
case ECORE_X_RANDR_OUTPUT_POLICY_RIGHT:
EINA_LIST_FOREACH(e_randr_screen_info.rrvd_info.randr_info_12->crtcs, iter, crtc_info)
{
if ((crtc_info->geometry.x + crtc_info->geometry.w) >
(ret->geometry.x + ret->geometry.w))
ret = crtc_info;
}
break;
case ECORE_X_RANDR_OUTPUT_POLICY_BELOW:
EINA_LIST_FOREACH(e_randr_screen_info.rrvd_info.randr_info_12->crtcs, iter, crtc_info)
{
if ((crtc_info->geometry.y + crtc_info->geometry.h) >
(ret->geometry.y + ret->geometry.h))
ret = crtc_info;
}
break;
case ECORE_X_RANDR_OUTPUT_POLICY_LEFT:
EINA_LIST_FOREACH(e_randr_screen_info.rrvd_info.randr_info_12->crtcs, iter, crtc_info)
{
if (crtc_info->geometry.x < ret->geometry.x)
ret = crtc_info;
}
break;
case ECORE_X_RANDR_OUTPUT_POLICY_CLONE:
ret = (e_randr_screen_info.rrvd_info.randr_info_12->primary_output) ? e_randr_screen_info.rrvd_info.randr_info_12->primary_output->crtc : NULL;
break;
default:
break;
}
eina_list_free(possible_crtcs);
return ret;
}
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