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GtkWidget: Add the style-updated signal

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This signal is emitted whenever the widget's style changes.
This commit is contained in:
Carlos Garnacho 2010-09-11 12:36:54 +02:00
parent 77ccdfc94e
commit 3c390c9c8e
2 changed files with 36 additions and 0 deletions
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34
gtk/gtkwidget.c
View File

@ -445,6 +445,7 @@ enum {
COMPOSITED_CHANGED,
QUERY_TOOLTIP,
DRAG_FAILED,
STYLE_UPDATED,
LAST_SIGNAL
};
@ -531,6 +532,7 @@ static gboolean gtk_widget_real_query_tooltip (GtkWidget *widget,
gint y,
gboolean keyboard_tip,
GtkTooltip *tooltip);
static void gtk_widget_real_style_updated (GtkWidget *widget);
static gboolean gtk_widget_real_show_help (GtkWidget *widget,
GtkWidgetHelpType help_type);
@ -863,6 +865,7 @@ gtk_widget_class_init (GtkWidgetClass *klass)
klass->can_activate_accel = gtk_widget_real_can_activate_accel;
klass->grab_broken_event = NULL;
klass->query_tooltip = gtk_widget_real_query_tooltip;
klass->style_updated = gtk_widget_real_style_updated;
klass->show_help = gtk_widget_real_show_help;
@ -1499,6 +1502,15 @@ gtk_widget_class_init (GtkWidgetClass *klass)
G_TYPE_NONE, 1,
GTK_TYPE_STYLE);
widget_signals[STYLE_UPDATED] =
g_signal_new (I_("style-updated"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkWidgetClass, style_updated),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkWidget::direction-changed:
* @widget: the object on which the signal is emitted
@ -6219,6 +6231,17 @@ gtk_widget_real_query_tooltip (GtkWidget *widget,
return FALSE;
}
static void
gtk_widget_real_style_updated (GtkWidget *widget)
{
GtkStyleContext *context;
context = g_object_get_qdata (G_OBJECT (widget),
quark_style_context);
if (context)
gtk_style_context_invalidate (context);
}
static gboolean
gtk_widget_real_show_help (GtkWidget *widget,
GtkWidgetHelpType help_type)
@ -13293,6 +13316,15 @@ gtk_widget_get_path (GtkWidget *widget)
return path;
}
static void
style_context_changed (GtkStyleContext *context,
gpointer user_data)
{
GtkWidget *widget = user_data;
g_signal_emit (widget, widget_signals[STYLE_UPDATED], 0);
}
GtkStyleContext *
gtk_widget_get_style_context (GtkWidget *widget)
{
@ -13314,6 +13346,8 @@ gtk_widget_get_style_context (GtkWidget *widget)
"direction", gtk_widget_get_direction (widget),
NULL);
g_signal_connect (context, "changed",
G_CALLBACK (style_context_changed), widget);
g_object_set_qdata_full (G_OBJECT (widget),
quark_style_context, context,

2
gtk/gtkwidget.h
View File

@ -416,6 +416,8 @@ struct _GtkWidgetClass
gint *allocated_pos,
gint *allocated_size);
void (* style_updated) (GtkWidget *widget);
/*< private >*/
/* Padding for future expansion */