close #282

etc/knowhow

@@ -93,3 +93,16 @@ $ sudo apt install snapcraft
 
 $ sudo docker pull snapcore/snapcraft
 $ sudo docker run -v $PWD:$PWD -w $PWD snapcore/snapcraft snapcraft
+
+Relase a new version
+····················
+https://wiki.debian.org/Creating%20signed%20GitHub%20releases
+1. tag the code (change version): $ git tag -s v1.1.2
+2. push the tag created: $ git push --tags
+3. then publish a new release into github
+4. download the .gz generated at the release
+5. sign the tarball (change version): $ gpg --armor --detach-sign desktopfolder-1.1.2.tar.gz
+6. it will create a desktopfolder-1.1.2.tar.gz.asc file
+7. Edit your release again and attach the detached signature desktopfolder-1.1.2.tar.gz.asc as binary to the release.
+8. Compile with debian at the root: $ debuild -uc -us
+9. Attach also the .dsc .tar.xz and .deb generated

src/widgets/PhotoWindow.vala

@@ -115,8 +115,9 @@ public class DesktopFolder.PhotoWindow : Gtk.ApplicationWindow {
             return true;
         });
 
-        this.button_press_event.connect (this.on_press);
-        this.button_release_event.connect (this.on_release);
+        this.button_press_event.connect (this.on_button_press);
+        this.key_release_event.connect(this.on_key_release);
+        this.button_release_event.connect (this.on_button_release);
         this.draw.connect (this.draw_background);
 
         // help: doesn't have the gtk window any active signal? or css :active state?
@@ -275,19 +276,33 @@ public class DesktopFolder.PhotoWindow : Gtk.ApplicationWindow {
      * @description release event captured.
      * @return bool @see widget on_release signal
      */
-    private bool on_release (Gdk.EventButton event) {
+    private bool on_button_release (Gdk.EventButton event) {
         // we are now a dock Window, to avoid minimization when show desktop
         // TODO exists a way to make resizable and moveable a dock window?
         this.type_hint = Gdk.WindowTypeHint.DESKTOP;
         return false;
     }
 
     /**
-     * @name on_press
+    *  @name on_key_release
+    *  @description a key pressed was released
+    @return bool @see widget key_release_event
+    */
+    private bool on_key_release (Gdk.EventKey event) {
+      if (event.type == Gdk.EventType.KEY_RELEASE && event.str==" ") {
+        this.manager.open ();
+        return true;
+      }
+      return false;
+    }
+
+
+    /**
+     * @name on_button_press
      * @description press event captured. The Window should show the popup on right button
-     * @return bool @see widget on_press signal
+     * @return bool @see widget button_press_event signal
      */
-    private bool on_press (Gdk.EventButton event) {
+    private bool on_button_press (Gdk.EventButton event) {
         // we are now a normal Window, to allow resizing and movement
         // TODO exists a way to make resizable and moveable a dock window?
         this.type_hint = Gdk.WindowTypeHint.NORMAL;