From f50329c16a7fd52c98cf174314505e941ee34b43 Mon Sep 17 00:00:00 2001
From: Don Gagne <don@thegagnes.com>
Date: Mon, 28 Sep 2015 15:11:23 -0700
Subject: [PATCH] New QGCCanvas control to fix redraw bug

---
 src/QmlControls/QGCCanvas.qml                  | 17 +++++++++++++++++
 src/QmlControls/QGroundControl.Controls.qmldir |  1 +
 2 files changed, 18 insertions(+)
 create mode 100644 src/QmlControls/QGCCanvas.qml

diff --git a/src/QmlControls/QGCCanvas.qml b/src/QmlControls/QGCCanvas.qml
new file mode 100644
index 000000000..1b7d6e3b9
--- /dev/null
+++ b/src/QmlControls/QGCCanvas.qml
@@ -0,0 +1,17 @@
+import QtQuick 2.2
+import QtQuick.Controls 1.2
+import QtQuick.Controls.Styles 1.2
+
+import QGroundControl.Palette 1.0
+import QGroundControl.ScreenTools 1.0
+
+/// Canvas has some sort of bug in it which can cause it to not paint when top level Views
+/// are switched. In order to fix this we ahve a signal hacked into ScreenTools to force
+/// a repaint.
+Canvas {
+    Connections {
+        target: ScreenTools
+
+        onRepaintRequested: arrowCanvas.requestPaint()
+    }
+}
diff --git a/src/QmlControls/QGroundControl.Controls.qmldir b/src/QmlControls/QGroundControl.Controls.qmldir
index cc9b94af8..5d72b54cc 100644
--- a/src/QmlControls/QGroundControl.Controls.qmldir
+++ b/src/QmlControls/QGroundControl.Controls.qmldir
@@ -9,6 +9,7 @@ QGCComboBox         1.0 QGCComboBox.qml
 QGCColoredImage     1.0 QGCColoredImage.qml
 QGCToolBarButton    1.0 QGCToolBarButton.qml
 QGCMovableItem      1.0 QGCMovableItem.qml
+QGCCanvas           1.0 QGCCanvas.qml
 
 SubMenuButton       1.0 SubMenuButton.qml
 IndicatorButton     1.0 IndicatorButton.qml
-- 
2.22.0