[gnome-control-center] wacom: Add "Test your settings" button to wacom panel

[Carlos Garnacho <carlosg src gnome org>]

commit b69cbe4e2473a834b5f9bcaa9ec92b7c3f7ee9af
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Jun 6 13:15:07 2016 +0200

    wacom: Add "Test your settings" button to wacom panel
    
    A popover with a CcDrawingArea appears in that case.

 panels/wacom/cc-wacom-panel.c |   39 +++++++++++++++++++++++++++++++++++++++
 po/POTFILES.in                |    1 +
 2 files changed, 40 insertions(+), 0 deletions(-)
---
diff --git a/panels/wacom/cc-wacom-panel.c b/panels/wacom/cc-wacom-panel.c
index aedd5ed..c92c7bc 100644
--- a/panels/wacom/cc-wacom-panel.c
+++ b/panels/wacom/cc-wacom-panel.c
@@ -27,6 +27,7 @@
 #include "cc-wacom-panel.h"
 #include "cc-wacom-page.h"
 #include "cc-wacom-resources.h"
+#include "cc-drawing-area.h"
 #include "gsd-wacom-device.h"
 
 #define WID(x) (GtkWidget *) gtk_builder_get_object (priv->builder, x)
@@ -40,6 +41,8 @@ struct _CcWacomPanelPrivate
 {
        GtkBuilder       *builder;
        GtkWidget        *notebook;
+       GtkWidget        *test_popover;
+       GtkWidget        *test_draw_area;
        GHashTable       *devices; /* key=GdkDevice, value=GsdWacomDevice */
        GHashTable       *pages; /* key=device name, value=GtkWidget */
        GdkDeviceManager *manager;
@@ -229,6 +232,41 @@ cc_wacom_panel_dispose (GObject *object)
        G_OBJECT_CLASS (cc_wacom_panel_parent_class)->dispose (object);
 }
 
+static void
+cc_wacom_panel_constructed (GObject *object)
+{
+       CcWacomPanel *self = CC_WACOM_PANEL (object);
+       CcWacomPanelPrivate *priv = self->priv;
+       GtkWidget *button;
+       CcShell *shell;
+
+       G_OBJECT_CLASS (cc_wacom_panel_parent_class)->constructed (object);
+
+       /* Add test area button to shell header. */
+       shell = cc_panel_get_shell (CC_PANEL (self));
+
+       button = gtk_toggle_button_new_with_mnemonic (_("Test Your _Settings"));
+       gtk_style_context_add_class (gtk_widget_get_style_context (button),
+                                    "text-button");
+       gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
+       gtk_widget_set_visible (button, TRUE);
+
+       cc_shell_embed_widget_in_header (shell, button);
+
+       priv->test_popover = gtk_popover_new (button);
+       gtk_container_set_border_width (GTK_CONTAINER (priv->test_popover), 6);
+
+       priv->test_draw_area = cc_drawing_area_new ();
+       gtk_widget_set_size_request (priv->test_draw_area, 400, 300);
+       gtk_container_add (GTK_CONTAINER (priv->test_popover),
+                          priv->test_draw_area);
+       gtk_widget_show (priv->test_draw_area);
+
+       g_object_bind_property (button, "active",
+                               priv->test_popover, "visible",
+                               G_BINDING_BIDIRECTIONAL);
+}
+
 static const char *
 cc_wacom_panel_get_help_uri (CcPanel *panel)
 {
@@ -246,6 +284,7 @@ cc_wacom_panel_class_init (CcWacomPanelClass *klass)
        object_class->get_property = cc_wacom_panel_get_property;
        object_class->set_property = cc_wacom_panel_set_property;
        object_class->dispose = cc_wacom_panel_dispose;
+       object_class->constructed = cc_wacom_panel_constructed;
 
        panel_class->get_help_uri = cc_wacom_panel_get_help_uri;
 
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 069c04e..4fdfdd3 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -208,6 +208,7 @@ panels/wacom/cc-wacom-button-row.h
 panels/wacom/cc-wacom-mapping-panel.c
 panels/wacom/cc-wacom-nav-button.c
 panels/wacom/cc-wacom-page.c
+panels/wacom/cc-wacom-panel.c
 panels/wacom/cc-wacom-stylus-page.c
 panels/wacom/gnome-wacom-panel.desktop.in.in
 [type: gettext/glade]panels/wacom/gnome-wacom-properties.ui