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authorStefano Karapetsas <[email protected]>2014-01-16 15:18:49 +0100
committerStefano Karapetsas <[email protected]>2014-01-16 15:18:49 +0100
commit4fd2ae34e50e63ef562356f804dbdea81341f4e2 (patch)
tree7a6ae12e358e5eb40fe5da532b67826832921ea6 /src/msd-osd-window.c
parent971fadd332e3c46a4586441b7d116a9bfc4b2e9e (diff)
downloadmate-power-manager-4fd2ae34e50e63ef562356f804dbdea81341f4e2.tar.bz2
mate-power-manager-4fd2ae34e50e63ef562356f804dbdea81341f4e2.tar.xz
Copy paste latest OSD code from mate-settings-daemon
Diffstat (limited to 'src/msd-osd-window.c')
-rw-r--r--src/msd-osd-window.c697
1 files changed, 697 insertions, 0 deletions
diff --git a/src/msd-osd-window.c b/src/msd-osd-window.c
new file mode 100644
index 0000000..46dfebd
--- /dev/null
+++ b/src/msd-osd-window.c
@@ -0,0 +1,697 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * On-screen-display (OSD) window for mate-settings-daemon's plugins
+ *
+ * Copyright (C) 2006-2007 William Jon McCann <[email protected]>
+ * Copyright (C) 2009 Novell, Inc
+ *
+ * Authors:
+ * William Jon McCann <[email protected]>
+ * Federico Mena-Quintero <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU Lesser General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+
+#include "msd-osd-window.h"
+
+#define DIALOG_TIMEOUT 2000 /* dialog timeout in ms */
+#define DIALOG_FADE_TIMEOUT 1500 /* timeout before fade starts */
+#define FADE_TIMEOUT 10 /* timeout in ms between each frame of the fade */
+
+#define BG_ALPHA 0.75
+
+#define MSD_OSD_WINDOW_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MSD_TYPE_OSD_WINDOW, MsdOsdWindowPrivate))
+
+struct MsdOsdWindowPrivate
+{
+ guint is_composited : 1;
+ guint hide_timeout_id;
+ guint fade_timeout_id;
+ double fade_out_alpha;
+};
+
+enum {
+ EXPOSE_WHEN_COMPOSITED,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (MsdOsdWindow, msd_osd_window, GTK_TYPE_WINDOW)
+
+static gboolean
+fade_timeout (MsdOsdWindow *window)
+{
+ if (window->priv->fade_out_alpha <= 0.0) {
+ gtk_widget_hide (GTK_WIDGET (window));
+
+ /* Reset it for the next time */
+ window->priv->fade_out_alpha = 1.0;
+ window->priv->fade_timeout_id = 0;
+
+ return FALSE;
+ } else {
+ GdkRectangle rect;
+ GtkWidget *win = GTK_WIDGET (window);
+ GtkAllocation allocation;
+
+ window->priv->fade_out_alpha -= 0.10;
+
+ rect.x = 0;
+ rect.y = 0;
+ gtk_widget_get_allocation (win, &allocation);
+ rect.width = allocation.width;
+ rect.height = allocation.height;
+
+ gtk_widget_realize (win);
+ gdk_window_invalidate_rect (gtk_widget_get_window (win), &rect, FALSE);
+ }
+
+ return TRUE;
+}
+
+static gboolean
+hide_timeout (MsdOsdWindow *window)
+{
+ if (window->priv->is_composited) {
+ window->priv->hide_timeout_id = 0;
+ window->priv->fade_timeout_id = g_timeout_add (FADE_TIMEOUT,
+ (GSourceFunc) fade_timeout,
+ window);
+ } else {
+ gtk_widget_hide (GTK_WIDGET (window));
+ }
+
+ return FALSE;
+}
+
+static void
+remove_hide_timeout (MsdOsdWindow *window)
+{
+ if (window->priv->hide_timeout_id != 0) {
+ g_source_remove (window->priv->hide_timeout_id);
+ window->priv->hide_timeout_id = 0;
+ }
+
+ if (window->priv->fade_timeout_id != 0) {
+ g_source_remove (window->priv->fade_timeout_id);
+ window->priv->fade_timeout_id = 0;
+ window->priv->fade_out_alpha = 1.0;
+ }
+}
+
+static void
+add_hide_timeout (MsdOsdWindow *window)
+{
+ int timeout;
+
+ if (window->priv->is_composited) {
+ timeout = DIALOG_FADE_TIMEOUT;
+ } else {
+ timeout = DIALOG_TIMEOUT;
+ }
+ window->priv->hide_timeout_id = g_timeout_add (timeout,
+ (GSourceFunc) hide_timeout,
+ window);
+}
+
+void
+msd_osd_window_draw_rounded_rectangle (cairo_t* cr,
+ gdouble aspect,
+ gdouble x,
+ gdouble y,
+ gdouble corner_radius,
+ gdouble width,
+ gdouble height)
+{
+ gdouble radius = corner_radius / aspect;
+
+ cairo_move_to (cr, x + radius, y);
+
+ cairo_line_to (cr,
+ x + width - radius,
+ y);
+ cairo_arc (cr,
+ x + width - radius,
+ y + radius,
+ radius,
+ -90.0f * G_PI / 180.0f,
+ 0.0f * G_PI / 180.0f);
+ cairo_line_to (cr,
+ x + width,
+ y + height - radius);
+ cairo_arc (cr,
+ x + width - radius,
+ y + height - radius,
+ radius,
+ 0.0f * G_PI / 180.0f,
+ 90.0f * G_PI / 180.0f);
+ cairo_line_to (cr,
+ x + radius,
+ y + height);
+ cairo_arc (cr,
+ x + radius,
+ y + height - radius,
+ radius,
+ 90.0f * G_PI / 180.0f,
+ 180.0f * G_PI / 180.0f);
+ cairo_line_to (cr,
+ x,
+ y + radius);
+ cairo_arc (cr,
+ x + radius,
+ y + radius,
+ radius,
+ 180.0f * G_PI / 180.0f,
+ 270.0f * G_PI / 180.0f);
+ cairo_close_path (cr);
+}
+
+void
+msd_osd_window_color_reverse (const GdkColor *a,
+ GdkColor *b)
+{
+ gdouble red;
+ gdouble green;
+ gdouble blue;
+ gdouble h;
+ gdouble s;
+ gdouble v;
+
+ red = (gdouble) a->red / 65535.0;
+ green = (gdouble) a->green / 65535.0;
+ blue = (gdouble) a->blue / 65535.0;
+
+ gtk_rgb_to_hsv (red, green, blue, &h, &s, &v);
+
+ v = 0.5 + (0.5 - v);
+ if (v > 1.0)
+ v = 1.0;
+ else if (v < 0.0)
+ v = 0.0;
+
+ gtk_hsv_to_rgb (h, s, v, &red, &green, &blue);
+
+ b->red = red * 65535.0;
+ b->green = green * 65535.0;
+ b->blue = blue * 65535.0;
+}
+
+/* This is our expose-event handler when the window is in a compositing manager.
+ * We draw everything by hand, using Cairo, so that we can have a nice
+ * transparent/rounded look.
+ */
+static void
+#if GTK_CHECK_VERSION (3, 0, 0)
+draw_when_composited (GtkWidget *widget, cairo_t *context)
+#else
+expose_when_composited (GtkWidget *widget, GdkEventExpose *event)
+#endif
+{
+ MsdOsdWindow *window;
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ cairo_t *context;
+#endif
+ cairo_t *cr;
+ cairo_surface_t *surface;
+ int width;
+ int height;
+ GtkStyle *style;
+ GdkColor color;
+ double r, g, b;
+
+ window = MSD_OSD_WINDOW (widget);
+
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ context = gdk_cairo_create (gtk_widget_get_window (widget));
+#endif
+
+ style = gtk_widget_get_style (widget);
+ cairo_set_operator (context, CAIRO_OPERATOR_SOURCE);
+ gtk_window_get_size (GTK_WINDOW (widget), &width, &height);
+
+ surface = cairo_surface_create_similar (cairo_get_target (context),
+ CAIRO_CONTENT_COLOR_ALPHA,
+ width,
+ height);
+
+ if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS) {
+ goto done;
+ }
+
+ cr = cairo_create (surface);
+ if (cairo_status (cr) != CAIRO_STATUS_SUCCESS) {
+ goto done;
+ }
+ cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0);
+ cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+ cairo_paint (cr);
+
+ /* draw a box */
+ msd_osd_window_draw_rounded_rectangle (cr, 1.0, 0.5, 0.5, height / 10, width-1, height-1);
+ msd_osd_window_color_reverse (&style->bg[GTK_STATE_NORMAL], &color);
+ r = (float)color.red / 65535.0;
+ g = (float)color.green / 65535.0;
+ b = (float)color.blue / 65535.0;
+ cairo_set_source_rgba (cr, r, g, b, BG_ALPHA);
+ cairo_fill_preserve (cr);
+
+ msd_osd_window_color_reverse (&style->text_aa[GTK_STATE_NORMAL], &color);
+ r = (float)color.red / 65535.0;
+ g = (float)color.green / 65535.0;
+ b = (float)color.blue / 65535.0;
+ cairo_set_source_rgba (cr, r, g, b, BG_ALPHA / 2);
+ cairo_set_line_width (cr, 1);
+ cairo_stroke (cr);
+
+ g_signal_emit (window, signals[EXPOSE_WHEN_COMPOSITED], 0, cr);
+
+ cairo_destroy (cr);
+
+ /* Make sure we have a transparent background */
+ cairo_rectangle (context, 0, 0, width, height);
+ cairo_set_source_rgba (context, 0.0, 0.0, 0.0, 0.0);
+ cairo_fill (context);
+
+ cairo_set_source_surface (context, surface, 0, 0);
+ cairo_paint_with_alpha (context, window->priv->fade_out_alpha);
+
+ done:
+ if (surface != NULL) {
+ cairo_surface_destroy (surface);
+ }
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ cairo_destroy (context);
+#endif
+}
+
+/* This is our expose-event handler when the window is *not* in a compositing manager.
+ * We just draw a rectangular frame by hand. We do this with hardcoded drawing code,
+ * instead of GtkFrame, to avoid changing the window's internal widget hierarchy: in
+ * either case (composited or non-composited), callers can assume that this works
+ * identically to a GtkWindow without any intermediate widgetry.
+ */
+static void
+#if GTK_CHECK_VERSION (3, 0, 0)
+draw_when_not_composited (GtkWidget *widget, cairo_t *cr)
+#else
+expose_when_not_composited (GtkWidget *widget, GdkEventExpose *event)
+#endif
+{
+ MsdOsdWindow *window;
+#if GTK_CHECK_VERSION (3, 0, 0)
+ int width;
+ int height;
+#else
+ GtkAllocation allocation;
+#endif
+
+ window = MSD_OSD_WINDOW (widget);
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ width = gtk_widget_get_allocated_width (widget);
+ height = gtk_widget_get_allocated_width (widget);
+#else
+ gtk_widget_get_allocation (widget, &allocation);
+#endif
+
+ gtk_paint_shadow (gtk_widget_get_style (widget),
+#if GTK_CHECK_VERSION (3, 0, 0)
+ cr,
+#else
+ gtk_widget_get_window (widget),
+#endif
+ gtk_widget_get_state (widget),
+ GTK_SHADOW_OUT,
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ &event->area,
+#endif
+ widget,
+ NULL, /* NULL detail -> themes should use the MsdOsdWindow widget name, probably */
+ 0,
+ 0,
+#if GTK_CHECK_VERSION (3, 0, 0)
+ width,
+ height);
+#else
+ allocation.width,
+ allocation.height);
+#endif
+}
+
+static gboolean
+#if GTK_CHECK_VERSION (3, 0, 0)
+msd_osd_window_draw (GtkWidget *widget,
+ cairo_t *cr)
+#else
+msd_osd_window_expose_event (GtkWidget *widget,
+ GdkEventExpose *event)
+#endif
+{
+ MsdOsdWindow *window;
+ GtkWidget *child;
+
+ window = MSD_OSD_WINDOW (widget);
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ if (window->priv->is_composited)
+ draw_when_composited (widget, cr);
+ else
+ draw_when_not_composited (widget, cr);
+#else
+ if (window->priv->is_composited)
+ expose_when_composited (widget, event);
+ else
+ expose_when_not_composited (widget, event);
+#endif
+
+ child = gtk_bin_get_child (GTK_BIN (window));
+ if (child)
+#if GTK_CHECK_VERSION (3, 0, 0)
+ gtk_container_propagate_draw (GTK_CONTAINER (window), child, cr);
+#else
+ gtk_container_propagate_expose (GTK_CONTAINER (window), child, event);
+#endif
+
+ return FALSE;
+}
+
+static void
+msd_osd_window_real_show (GtkWidget *widget)
+{
+ MsdOsdWindow *window;
+
+ if (GTK_WIDGET_CLASS (msd_osd_window_parent_class)->show) {
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->show (widget);
+ }
+
+ window = MSD_OSD_WINDOW (widget);
+ remove_hide_timeout (window);
+ add_hide_timeout (window);
+}
+
+static void
+msd_osd_window_real_hide (GtkWidget *widget)
+{
+ MsdOsdWindow *window;
+
+ if (GTK_WIDGET_CLASS (msd_osd_window_parent_class)->hide) {
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->hide (widget);
+ }
+
+ window = MSD_OSD_WINDOW (widget);
+ remove_hide_timeout (window);
+}
+
+static void
+msd_osd_window_real_realize (GtkWidget *widget)
+{
+#if GTK_CHECK_VERSION (3, 0, 0)
+ GdkScreen *screen;
+ GdkVisual *visual;
+ cairo_region_t *region;
+#else
+ GdkColormap *colormap;
+ GtkAllocation allocation;
+ GdkBitmap *mask;
+ cairo_t *cr;
+#endif
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ screen = gtk_widget_get_screen (widget);
+ visual = gdk_screen_get_rgba_visual (screen);
+
+ if (visual == NULL) {
+ visual = gdk_screen_get_system_visual (screen);
+ }
+ gtk_widget_set_visual (widget, visual);
+#else
+ colormap = gdk_screen_get_rgba_colormap (gtk_widget_get_screen (widget));
+
+ if (colormap != NULL) {
+ gtk_widget_set_colormap (widget, colormap);
+ }
+#endif
+
+ if (GTK_WIDGET_CLASS (msd_osd_window_parent_class)->realize) {
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->realize (widget);
+ }
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ /* make the whole window ignore events */
+ region = cairo_region_create ();
+ gtk_widget_input_shape_combine_region (widget, region);
+ cairo_region_destroy (region);
+#else
+ gtk_widget_get_allocation (widget, &allocation);
+ mask = gdk_pixmap_new (gtk_widget_get_window (widget),
+ allocation.width,
+ allocation.height,
+ 1);
+ cr = gdk_cairo_create (mask);
+
+ cairo_set_source_rgba (cr, 1., 1., 1., 0.);
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_paint (cr);
+
+ /* make the whole window ignore events */
+ gdk_window_input_shape_combine_mask (gtk_widget_get_window (widget), mask, 0, 0);
+ g_object_unref (mask);
+ cairo_destroy (cr);
+#endif
+}
+
+static void
+msd_osd_window_style_set (GtkWidget *widget,
+ GtkStyle *previous_style)
+{
+ GtkStyle *style;
+
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->style_set (widget, previous_style);
+
+ /* We set our border width to 12 (per the MATE standard), plus the
+ * thickness of the frame that we draw in our expose handler. This will
+ * make our child be 12 pixels away from the frame.
+ */
+
+ style = gtk_widget_get_style (widget);
+ gtk_container_set_border_width (GTK_CONTAINER (widget), 12 + MAX (style->xthickness, style->ythickness));
+}
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+static void
+msd_osd_window_get_preferred_width (GtkWidget *widget,
+ gint *minimum_width,
+ gint *natural_width)
+{
+ GtkStyle *style;
+
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->get_preferred_width (widget, minimum_width, natural_width);
+
+ /* See the comment in msd_osd_window_style_set() for why we add the thickness here */
+
+ style = gtk_widget_get_style (widget);
+
+ *minimum_width += style->xthickness;
+ *natural_width += style->xthickness;
+}
+
+static void
+msd_osd_window_get_preferred_height (GtkWidget *widget,
+ gint *minimum_height,
+ gint *natural_height)
+{
+ GtkStyle *style;
+
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->get_preferred_height (widget, minimum_height, natural_height);
+
+ /* See the comment in msd_osd_window_style_set() for why we add the thickness here */
+
+ style = gtk_widget_get_style (widget);
+
+ *minimum_height += style->ythickness;
+ *natural_height += style->ythickness;
+}
+#else
+static void
+msd_osd_window_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
+{
+ GtkStyle *style;
+
+ GTK_WIDGET_CLASS (msd_osd_window_parent_class)->size_request (widget, requisition);
+
+ /* See the comment in msd_osd_window_style_set() for why we add the thickness here */
+
+ style = gtk_widget_get_style (widget);
+
+ requisition->width += style->xthickness;
+ requisition->height += style->ythickness;
+}
+#endif
+
+static GObject *
+msd_osd_window_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_params)
+{
+ GObject *object;
+
+ object = G_OBJECT_CLASS (msd_osd_window_parent_class)->constructor (type, n_construct_properties, construct_params);
+
+ g_object_set (object,
+ "type", GTK_WINDOW_POPUP,
+ "type-hint", GDK_WINDOW_TYPE_HINT_NOTIFICATION,
+ "skip-taskbar-hint", TRUE,
+ "skip-pager-hint", TRUE,
+ "focus-on-map", FALSE,
+ NULL);
+
+ return object;
+}
+
+static void
+msd_osd_window_class_init (MsdOsdWindowClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ gobject_class->constructor = msd_osd_window_constructor;
+
+ widget_class->show = msd_osd_window_real_show;
+ widget_class->hide = msd_osd_window_real_hide;
+ widget_class->realize = msd_osd_window_real_realize;
+ widget_class->style_set = msd_osd_window_style_set;
+#if GTK_CHECK_VERSION (3, 0, 0)
+ widget_class->get_preferred_width = msd_osd_window_get_preferred_width;
+ widget_class->get_preferred_height = msd_osd_window_get_preferred_height;
+ widget_class->draw = msd_osd_window_draw;
+#else
+ widget_class->size_request = msd_osd_window_size_request;
+ widget_class->expose_event = msd_osd_window_expose_event;
+#endif
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ signals[EXPOSE_WHEN_COMPOSITED] = g_signal_new ("draw-when-composited",
+#else
+ signals[EXPOSE_WHEN_COMPOSITED] = g_signal_new ("expose-when-composited",
+#endif
+ G_TYPE_FROM_CLASS (gobject_class),
+ G_SIGNAL_RUN_FIRST,
+#if GTK_CHECK_VERSION (3, 0, 0)
+ G_STRUCT_OFFSET (MsdOsdWindowClass, draw_when_composited),
+#else
+ G_STRUCT_OFFSET (MsdOsdWindowClass, expose_when_composited),
+#endif
+ NULL, NULL,
+ g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE, 1,
+ G_TYPE_POINTER);
+
+ g_type_class_add_private (klass, sizeof (MsdOsdWindowPrivate));
+}
+
+/**
+ * msd_osd_window_is_composited:
+ * @window: a #MsdOsdWindow
+ *
+ * Return value: whether the window was created on a composited screen.
+ */
+gboolean
+msd_osd_window_is_composited (MsdOsdWindow *window)
+{
+ return window->priv->is_composited;
+}
+
+/**
+ * msd_osd_window_is_valid:
+ * @window: a #MsdOsdWindow
+ *
+ * Return value: TRUE if the @window's idea of being composited matches whether
+ * its current screen is actually composited.
+ */
+gboolean
+msd_osd_window_is_valid (MsdOsdWindow *window)
+{
+ GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (window));
+ return gdk_screen_is_composited (screen) == window->priv->is_composited;
+}
+
+static void
+msd_osd_window_init (MsdOsdWindow *window)
+{
+ GdkScreen *screen;
+
+ window->priv = MSD_OSD_WINDOW_GET_PRIVATE (window);
+
+ screen = gtk_widget_get_screen (GTK_WIDGET (window));
+
+ window->priv->is_composited = gdk_screen_is_composited (screen);
+
+ if (window->priv->is_composited) {
+ gdouble scalew, scaleh, scale;
+ gint size;
+
+ gtk_window_set_decorated (GTK_WINDOW (window), FALSE);
+ gtk_widget_set_app_paintable (GTK_WIDGET (window), TRUE);
+
+ /* assume 130x130 on a 640x480 display and scale from there */
+ scalew = gdk_screen_get_width (screen) / 640.0;
+ scaleh = gdk_screen_get_height (screen) / 480.0;
+ scale = MIN (scalew, scaleh);
+ size = 130 * MAX (1, scale);
+
+ gtk_window_set_default_size (GTK_WINDOW (window), size, size);
+
+ window->priv->fade_out_alpha = 1.0;
+ } else {
+ gtk_container_set_border_width (GTK_CONTAINER (window), 12);
+ }
+}
+
+GtkWidget *
+msd_osd_window_new (void)
+{
+ return g_object_new (MSD_TYPE_OSD_WINDOW, NULL);
+}
+
+/**
+ * msd_osd_window_update_and_hide:
+ * @window: a #MsdOsdWindow
+ *
+ * Queues the @window for immediate drawing, and queues a timer to hide the window.
+ */
+void
+msd_osd_window_update_and_hide (MsdOsdWindow *window)
+{
+ remove_hide_timeout (window);
+ add_hide_timeout (window);
+
+ if (window->priv->is_composited) {
+ gtk_widget_queue_draw (GTK_WIDGET (window));
+ }
+}