From e48051aa15d249f527774e106a8034187949ccca Mon Sep 17 00:00:00 2001
From: Stefan Wildemann <metalstrolch@metalstrolche.de>
Date: Wed, 25 Nov 2015 17:09:32 +0100
Subject: Sailfish needs periodic trigger for display on.

---
 navit/graphics/qt5/graphics_qt5.cpp | 34 ++++++++++++++++++++++++++++++----
 navit/graphics/qt5/graphics_qt5.h   |  9 +++++++++
 2 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/navit/graphics/qt5/graphics_qt5.cpp b/navit/graphics/qt5/graphics_qt5.cpp
index e8793c2f9..640cba4be 100644
--- a/navit/graphics/qt5/graphics_qt5.cpp
+++ b/navit/graphics/qt5/graphics_qt5.cpp
@@ -47,7 +47,6 @@
 #include <QDBusConnection>
 #include <QDBusInterface>
 
-
 struct callback_list* callbacks;
 QApplication * navit_app = NULL;
 
@@ -79,6 +78,16 @@ graphics_destroy(struct graphics_priv *gr)
         {
             g_hash_table_remove(gr->parent->overlays, gr);
         }
+#ifdef SAILFISH_OS
+        if(gr->display_on_ev != NULL)
+        {
+            event_remove_timeout(gr->display_on_ev);
+        }
+        if(gr->display_on_cb != NULL)
+        {
+            g_free(gr->display_on_cb);
+        }
+#endif
         /* destroy overlays hash */
         g_hash_table_destroy(gr->overlays);
         /* destroy self */
@@ -465,15 +474,32 @@ graphics_qt5_fullscreen(struct window *w, int on)
 	return 1;
 }
 
+#ifdef SAILFISH_OS
 static void
-graphics_qt5_disable_suspend(struct window *w)
+keep_display_on(struct graphics_priv * priv)
 {
         dbg(lvl_debug,"enter\n");
         QDBusConnection system = QDBusConnection::connectToBus(QDBusConnection::SystemBus, "system");
         QDBusInterface interface("com.nokia.mce", "/com/nokia/mce/request", "com.nokia.mce.request", system);
 
-        interface.call(QLatin1String("req_display_blanking_pause"));
-//        interface.call(QLatin1String("req_display_cancel_blanking_pause"));
+        interface.call(QLatin1String("req_display_blanking_pause"));    
+}
+#endif
+
+
+static void
+graphics_qt5_disable_suspend(struct window *w)
+{
+//        dbg(lvl_debug,"enter\n");
+#ifdef SAILFISH_OS
+        struct graphics_priv * gr;
+        gr = (struct graphics_priv *) w->priv;
+        keep_display_on(gr);
+        /* to keep display on, d-bus trigger must be called at least once per second.
+         * to cope with fuzz, trigger it once per 30 seconds */
+        gr->display_on_cb = callback_new_1(callback_cast(keep_display_on), gr);
+        gr->display_on_ev = event_add_timeout(30000, 1, gr->display_on_cb);
+#endif
 }
 
 static void *
diff --git a/navit/graphics/qt5/graphics_qt5.h b/navit/graphics/qt5/graphics_qt5.h
index fb3c29f8d..0f15a88fd 100644
--- a/navit/graphics/qt5/graphics_qt5.h
+++ b/navit/graphics/qt5/graphics_qt5.h
@@ -12,6 +12,11 @@
 #define QT_QPAINTER_USE_FREETYPE 1
 #endif
 
+#ifndef SAILFISH_OS
+#define SAILFISH_OS 1
+#endif
+
+
 #ifdef QT_QPAINTER_USE_FREETYPE
 #include "navit/font/freetype/font_freetype.h"
 #endif
@@ -28,6 +33,10 @@ struct graphics_priv {
 #ifdef QT_QPAINTER_USE_FREETYPE
 	struct font_priv * (*font_freetype_new)(void *meth);
 	struct font_freetype_methods freetype_methods;
+#endif
+#ifdef SAILFISH_OS
+        struct callback *display_on_cb;
+        struct event_timeout *display_on_ev;
 #endif
         GHashTable *overlays;
         struct graphics_priv * parent;
-- 
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