[libhandy] demo: Add export to file to HdyAvatar

[Alexander Mikhaylenko <alexm src gnome org>]

commit 6f9b2dee76cc9ac9ab4d85d8b4c9e7b58ce5f10f
Author: Julian Sparber <julian sparber net>
Date:   Tue Oct 27 18:47:26 2020 +0100

    demo: Add export to file to HdyAvatar

 examples/hdy-demo-window.c                         | 41 ++++++++++++++++++++++
 examples/hdy-demo-window.ui                        | 21 +++++++++++
 src/handy.gresources.xml                           |  1 +
 .../scalable/actions/avatar-save-symbolic.svg      |  1 +
 4 files changed, 64 insertions(+)
---
diff --git a/examples/hdy-demo-window.c b/examples/hdy-demo-window.c
index 707b5758..5ba903d8 100644
--- a/examples/hdy-demo-window.c
+++ b/examples/hdy-demo-window.c
@@ -350,6 +350,46 @@ avatar_file_set_cb (HdyDemoWindow *self)
   hdy_avatar_set_image_load_func (self->avatar, (HdyAvatarImageLoadFunc) avatar_load_file, self, NULL);
 }
 
+static void
+file_chooser_response_cb (HdyDemoWindow  *self,
+                         gint            response_id,
+                         GtkFileChooser *chooser)
+{
+  if (response_id == GTK_RESPONSE_ACCEPT) {
+    g_autofree gchar *filename = NULL;
+    g_autoptr (GdkPixbuf) pixbuf = NULL;
+
+    filename = gtk_file_chooser_get_filename (chooser);
+    pixbuf = hdy_avatar_draw_to_pixbuf (self->avatar,
+                                        hdy_avatar_get_size (self->avatar),
+                                        gtk_widget_get_scale_factor (GTK_WIDGET (self)));
+
+    if (pixbuf != NULL)
+      gdk_pixbuf_save (pixbuf, filename, "png", NULL, NULL);
+  }
+
+  g_object_unref (chooser);
+}
+
+static void
+avatar_save_to_file_cb (HdyDemoWindow *self)
+{
+  GtkFileChooserNative *chooser = NULL;
+
+  g_assert (HDY_IS_DEMO_WINDOW (self));
+
+  chooser = gtk_file_chooser_native_new (_("Save Avatar"),
+                                         GTK_WINDOW (self),
+                                         GTK_FILE_CHOOSER_ACTION_SAVE,
+                                         _("_Save"),
+                                         _("_Cancel"));
+
+  gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (chooser), TRUE);
+  g_signal_connect_swapped (chooser, "response", G_CALLBACK (file_chooser_response_cb), self);
+
+  gtk_native_dialog_show (GTK_NATIVE_DIALOG (chooser));
+}
+
 static gchar *
 avatar_new_random_name (void)
 {
@@ -487,6 +527,7 @@ hdy_demo_window_class_init (HdyDemoWindowClass *klass)
   gtk_widget_class_bind_template_callback (widget_class, carousel_return_clicked_cb);
   gtk_widget_class_bind_template_callback (widget_class, avatar_file_remove_cb);
   gtk_widget_class_bind_template_callback (widget_class, avatar_file_set_cb);
+  gtk_widget_class_bind_template_callback (widget_class, avatar_save_to_file_cb);
 }
 
 static void
diff --git a/examples/hdy-demo-window.ui b/examples/hdy-demo-window.ui
index 44d3e559..67ffda23 100644
--- a/examples/hdy-demo-window.ui
+++ b/examples/hdy-demo-window.ui
@@ -2015,6 +2015,27 @@
                                         </child>
                                       </object>
                                     </child>
+                                    <child>
+                                      <object class="HdyActionRow">
+                                        <property name="visible">True</property>
+                                        <property name="can_focus">False</property>
+                                        <property name="title" translatable="yes">Export to file</property>
+                                        <child>
+                                          <object class="GtkButton" id="avatar_save_file">
+                                            <property name="visible">True</property>
+                                            <property name="valign">center</property>
+                                            <signal name="clicked" swapped="yes" 
handler="avatar_save_to_file_cb"/>
+                                            <child>
+                                              <object class="GtkImage">
+                                                <property name="visible">True</property>
+                                                <property name="icon_name">avatar-save-symbolic</property>
+                                                <property name="icon_size">1</property>
+                                              </object>
+                                            </child>
+                                          </object>
+                                        </child>
+                                      </object>
+                                    </child>
                                   </object>
                                 </child>
                                 <child>
diff --git a/src/handy.gresources.xml b/src/handy.gresources.xml
index b1d948ab..86182174 100644
--- a/src/handy.gresources.xml
+++ b/src/handy.gresources.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
   <gresource prefix="/sm/puri/handy">
+    <file preprocess="xml-stripblanks">icons/scalable/actions/avatar-save-symbolic.svg</file>
     <file preprocess="xml-stripblanks">icons/scalable/actions/hdy-expander-arrow-symbolic.svg</file>
     <file preprocess="xml-stripblanks">icons/scalable/actions/object-select-symbolic.svg</file>
     <file preprocess="xml-stripblanks">icons/scalable/actions/pan-down-symbolic.svg</file>
diff --git a/src/icons/scalable/actions/avatar-save-symbolic.svg 
b/src/icons/scalable/actions/avatar-save-symbolic.svg
new file mode 100644
index 00000000..1f7bbd0d
--- /dev/null
+++ b/src/icons/scalable/actions/avatar-save-symbolic.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"; width="16" height="16"><g color="#000" fill="#2e3436"><path d="M7 
1v7.563L5.719 7.28A1.015 1.015 0 005 7H4v1c0 .265.093.53.281.719l3 3 .282.281h.875l.28-.281 3-3A1.01 1.01 0 
0012 8V7h-1c-.265 0-.53.093-.719.281L9 8.563V1z" 
style="line-height:normal;-inkscape-font-specification:'Bitstream Vera 
Sans';text-indent:0;text-align:start;text-decoration-line:none;text-transform:none;marker:none" 
font-weight="400" font-family="Bitstream Vera Sans" overflow="visible"/><path d="M1.994 13L2 15h12l-.006-2z" 
style="marker:none" overflow="visible" fill-rule="evenodd"/></g></svg>
\ No newline at end of file