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Add gdk_screen_get_primary_monitor(). This fixes bug #601712

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This commit is contained in:
Cody Russell 2009-12-08 11:27:02 -06:00
parent 0748cf563d
commit 662e69ad3e
4 changed files with 79 additions and 12 deletions
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1
gdk/gdkscreen.h
View File

@ -91,6 +91,7 @@ GList * gdk_screen_get_toplevel_windows (GdkScreen *screen);
gchar * gdk_screen_make_display_name (GdkScreen *screen);
gint gdk_screen_get_n_monitors (GdkScreen *screen);
gint gdk_screen_get_primary_monitor (GdkScreen *screen);
void gdk_screen_get_monitor_geometry (GdkScreen *screen,
gint monitor_num,
GdkRectangle *dest);

41
gdk/x11/gdkscreen-x11.c
View File

@ -354,6 +354,31 @@ gdk_screen_get_n_monitors (GdkScreen *screen)
return GDK_SCREEN_X11 (screen)->n_monitors;
}
/**
* gdk_screen_get_primary_monitor:
* @screen: a #GdkScreen.
*
* Gets the primary monitor for @screen. The primary monitor
* is considered the monitor where the 'main desktop' lives.
* While normal application windows typically allow the window
* manager to place the windows, specialized desktop applications
* such as panels should place themselves on the primary monitor.
*
* If no primary monitor is configured by the user, the return value
* will be 0, defaulting to the first monitor.
*
* Returns: An integer index for the primary monitor, or 0 if none is configured.
*
* Since: 2.20
*/
gint
gdk_screen_get_primary_monitor (GdkScreen *screen)
{
g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
return GDK_SCREEN_X11 (screen)->primary_monitor;
}
/**
* gdk_screen_get_monitor_width_mm:
* @screen: a #GdkScreen
@ -722,6 +747,7 @@ init_randr13 (GdkScreen *screen)
GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
Display *dpy = GDK_SCREEN_XDISPLAY (screen);
XRRScreenResources *resources;
RROutput primary_output;
int i;
GArray *monitors;
gboolean randr12_compat = FALSE;
@ -733,15 +759,23 @@ init_randr13 (GdkScreen *screen)
screen_x11->xroot_window);
if (!resources)
return FALSE;
monitors = g_array_sized_new (FALSE, TRUE, sizeof (GdkX11Monitor),
resources->noutput);
primary_output = XRRGetOutputPrimary (screen_x11->xdisplay,
screen_x11->xroot_window);
for (i = 0; i < resources->noutput; ++i)
{
XRROutputInfo *output =
XRRGetOutputInfo (dpy, resources, resources->outputs[i]);
if (resources->outputs[i] == primary_output)
{
screen_x11->primary_monitor = i;
}
/* Non RandR1.2 X driver have output name "default" */
randr12_compat |= !g_strcmp0(output->name, "default");
@ -1110,7 +1144,10 @@ _gdk_x11_screen_size_changed (GdkScreen *screen,
display_x11 = GDK_DISPLAY_X11 (gdk_screen_get_display (screen));
if (display_x11->have_randr13 && event->type == ConfigureNotify)
return;
{
g_signal_emit_by_name (screen, "monitors-changed");
return;
}
XRRUpdateConfiguration (event);
#else

1
gdk/x11/gdkscreen-x11.h
View File

@ -93,6 +93,7 @@ struct _GdkScreenX11
/* Xinerama/RandR 1.2 */
gint n_monitors;
GdkX11Monitor *monitors;
gint primary_monitor;
/* Pango renderer object singleton */
PangoRenderer *renderer;

48
tests/testxinerama.c
View File

@ -23,13 +23,15 @@
#include <gtk/gtk.h>
static gint num_monitors;
static gint primary_monitor;
static void
request (GtkWidget *widget,
gpointer user_data)
{
gchar *str;
gint i = gdk_screen_get_monitor_at_window (gtk_widget_get_screen (widget),
GdkScreen *screen = gtk_widget_get_screen (widget);
gint i = gdk_screen_get_monitor_at_window (screen,
widget->window);
if (i < 0)
@ -37,18 +39,35 @@ request (GtkWidget *widget,
else
{
GdkRectangle monitor;
gdk_screen_get_monitor_geometry (gtk_widget_get_screen (widget), i, &monitor);
gdk_screen_get_monitor_geometry (screen,
i, &monitor);
primary_monitor = gdk_screen_get_primary_monitor (screen);
str = g_strdup_printf ("<big><span foreground='white' background='black'>"
"Monitor %d of %d</span></big>\n"
"<i>Width - Height </i>: (%d,%d)\n"
"<i>Top left coordinate </i>: (%d,%d)",i+1, num_monitors,
monitor.width, monitor.height, monitor.x, monitor.y);
"<i>Top left coordinate </i>: (%d,%d)\n"
"<i>Primary monitor: %d</i>",
i + 1, num_monitors,
monitor.width, monitor.height,
monitor.x, monitor.y,
primary_monitor);
}
gtk_label_set_markup (GTK_LABEL (user_data), str);
g_free (str);
}
static void
monitors_changed_cb (GdkScreen *screen,
gpointer data)
{
GtkWidget *label = (GtkWidget *)data;
request (label, label);
}
int
main (int argc, char *argv[])
{
@ -63,8 +82,10 @@ main (int argc, char *argv[])
num_monitors = gdk_screen_get_n_monitors (screen);
if (num_monitors == 1)
g_warning ("The default screen of the current display only has one monitor.");
for (i=0; i<num_monitors; i++)
primary_monitor = gdk_screen_get_primary_monitor (screen);
for (i = 0; i < num_monitors; i++)
{
GdkRectangle monitor;
gchar *str;
@ -80,8 +101,12 @@ main (int argc, char *argv[])
str = g_strdup_printf ("<big><span foreground='white' background='black'>"
"Monitor %d of %d</span></big>\n"
"<i>Width - Height </i>: (%d,%d)\n"
"<i>Top left coordinate </i>: (%d,%d)",i+1, num_monitors,
monitor.width, monitor.height, monitor.x, monitor.y);
"<i>Top left coordinate </i>: (%d,%d)\n"
"<i>Primary monitor: %d</i>",
i + 1, num_monitors,
monitor.width, monitor.height,
monitor.x, monitor.y,
primary_monitor);
gtk_label_set_markup (GTK_LABEL (label), str);
g_free (str);
vbox = gtk_vbox_new (TRUE, 1);
@ -94,8 +119,11 @@ main (int argc, char *argv[])
g_signal_connect (button, "clicked", G_CALLBACK (gtk_main_quit), NULL);
gtk_container_add (GTK_CONTAINER (vbox), button);
gtk_widget_show_all (window);
g_signal_connect (screen, "monitors-changed",
G_CALLBACK (monitors_changed_cb), label);
}
gtk_main ();
return 0;