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screen: Allow reusing the current position when quering the monitor

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Add new api (meta_screen_get_current_monitor_for_pos and
meta_screen_get_current_monitor_info_for_pos) that allow querying the monitor
without a roundtrip by reusing the passed in cursor position.
This commit is contained in:
Adel Gadllah 2013-06-23 21:16:52 +02:00
parent 7b36dcf4a0
commit 79ea9f0b0f
3 changed files with 66 additions and 22 deletions
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3
src/core/screen-private.h
View File

@ -187,6 +187,9 @@ MetaWindow* meta_screen_get_mouse_window (MetaScreen *scre
MetaWindow *not_this_one);
const MetaMonitorInfo* meta_screen_get_current_monitor_info (MetaScreen *screen);
const MetaMonitorInfo* meta_screen_get_current_monitor_info_for_pos (MetaScreen *screen,
int x,
int y);
const MetaMonitorInfo* meta_screen_get_monitor_for_rect (MetaScreen *screen,
MetaRectangle *rect);
const MetaMonitorInfo* meta_screen_get_monitor_for_window (MetaScreen *screen,

82
src/core/screen.c
View File

@ -2216,6 +2216,65 @@ meta_screen_get_current_monitor_info (MetaScreen *screen)
return &screen->monitor_infos[monitor_index];
}
const MetaMonitorInfo*
meta_screen_get_current_monitor_info_for_pos (MetaScreen *screen,
int x,
int y)
{
int monitor_index;
monitor_index = meta_screen_get_current_monitor_for_pos (screen, x, y);
return &screen->monitor_infos[monitor_index];
}
/**
* meta_screen_get_current_monitor_for_pos:
* @screen: a #MetaScreen
* @x: The x coordinate
* @y: The y coordinate
*
* Gets the index of the monitor that contains the passed coordinates.
*
* Return value: a monitor index
*/
int
meta_screen_get_current_monitor_for_pos (MetaScreen *screen,
int x,
int y)
{
if (screen->n_monitor_infos == 1)
return 0;
else if (screen->display->monitor_cache_invalidated)
{
int i;
MetaRectangle pointer_position;
pointer_position.x = x;
pointer_position.y = y;
pointer_position.width = pointer_position.height = 1;
screen->display->monitor_cache_invalidated = FALSE;
screen->last_monitor_index = 0;
for (i = 0; i < screen->n_monitor_infos; i++)
{
if (meta_rectangle_contains_rect (&screen->monitor_infos[i].rect,
&pointer_position))
{
screen->last_monitor_index = i;
break;
}
}
meta_topic (META_DEBUG_XINERAMA,
"Rechecked current monitor, now %d\n",
screen->last_monitor_index);
}
return screen->last_monitor_index;
}
/**
* meta_screen_get_current_monitor:
* @screen: a #MetaScreen
@ -2241,11 +2300,7 @@ meta_screen_get_current_monitor (MetaScreen *screen)
XIButtonState buttons;
XIModifierState mods;
XIGroupState group;
int i;
MetaRectangle pointer_position;
screen->display->monitor_cache_invalidated = FALSE;
XIQueryPointer (screen->display->xdisplay,
META_VIRTUAL_CORE_POINTER_ID,
screen->xroot,
@ -2260,24 +2315,7 @@ meta_screen_get_current_monitor (MetaScreen *screen)
&group);
free (buttons.mask);
pointer_position.x = root_x_return;
pointer_position.y = root_y_return;
pointer_position.width = pointer_position.height = 1;
screen->last_monitor_index = 0;
for (i = 0; i < screen->n_monitor_infos; i++)
{
if (meta_rectangle_contains_rect (&screen->monitor_infos[i].rect,
&pointer_position))
{
screen->last_monitor_index = i;
break;
}
}
meta_topic (META_DEBUG_XINERAMA,
"Rechecked current monitor, now %d\n",
screen->last_monitor_index);
meta_screen_get_current_monitor_for_pos (screen, root_x_return, root_y_return);
}
return screen->last_monitor_index;

3
src/meta/screen.h
View File

@ -78,6 +78,9 @@ MetaWorkspace * meta_screen_get_active_workspace (MetaScreen *screen);
int meta_screen_get_n_monitors (MetaScreen *screen);
int meta_screen_get_primary_monitor (MetaScreen *screen);
int meta_screen_get_current_monitor (MetaScreen *screen);
int meta_screen_get_current_monitor_for_pos (MetaScreen *screen,
int x,
int y);
void meta_screen_get_monitor_geometry (MetaScreen *screen,
int monitor,
MetaRectangle *geometry);