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gtk: add gtk_widget_get_scale_factor()

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This commit is contained in:
Michael Natterer 2013-02-15 15:35:13 +01:00 committed by Alexander Larsson
parent d4607be003
commit c0ea0b5aad
2 changed files with 46 additions and 1 deletions
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45
gtk/gtkwidget.c
View File

@ -641,7 +641,8 @@ enum {
PROP_VEXPAND,
PROP_HEXPAND_SET,
PROP_VEXPAND_SET,
PROP_EXPAND
PROP_EXPAND,
PROP_SCALE_FACTOR
};
typedef struct _GtkStateData GtkStateData;
@ -1607,6 +1608,25 @@ G_GNUC_END_IGNORE_DEPRECATIONS
1.0,
1.0,
GTK_PARAM_READWRITE));
/**
* GtkWidget:scale-factor:
*
* The scale factor of the widget. See gtk_widget_get_scale_factor() for
* more details about widget scaling.
*
* Since: 3.10
*/
g_object_class_install_property (gobject_class,
PROP_SCALE_FACTOR,
g_param_spec_int ("scale-factor",
P_("Scale factor"),
P_("The scaling factor of the window"),
1,
G_MAXINT,
1,
GTK_PARAM_READABLE));
/**
* GtkWidget::show:
* @widget: the object which received the signal.
@ -3883,6 +3903,9 @@ gtk_widget_get_property (GObject *object,
case PROP_OPACITY:
g_value_set_double (value, gtk_widget_get_opacity (widget));
break;
case PROP_SCALE_FACTOR:
g_value_set_int (value, gtk_widget_get_scale_factor (widget));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -9969,6 +9992,26 @@ gtk_widget_has_screen (GtkWidget *widget)
return (gtk_widget_get_screen_unchecked (widget) != NULL);
}
gint
gtk_widget_get_scale_factor (GtkWidget *widget)
{
GtkWidget *toplevel;
g_return_val_if_fail (GTK_IS_WIDGET (widget), 1);
if (gtk_widget_get_realized (widget))
return gdk_window_get_scale_factor (gtk_widget_get_window (widget));
toplevel = gtk_widget_get_toplevel (widget);
if (toplevel && toplevel != widget)
return gtk_widget_get_scale_factor (toplevel);
/* else fall back to something that is more likely to be right than
* just returning 1:
*/
return gdk_screen_get_monitor_scale_factor (gtk_widget_get_screen (widget), 0);
}
/**
* gtk_widget_get_display:
* @widget: a #GtkWidget

2
gtk/gtkwidget.h
View File

@ -848,6 +848,8 @@ GDK_AVAILABLE_IN_ALL
GdkScreen * gtk_widget_get_screen (GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
gboolean gtk_widget_has_screen (GtkWidget *widget);
GDK_AVAILABLE_IN_3_10
gint gtk_widget_get_scale_factor (GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
GdkDisplay * gtk_widget_get_display (GtkWidget *widget);
GDK_AVAILABLE_IN_ALL