From bf0aa55d7869fe503c2e124f5afb99304eff76b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaakko=20Ker=C3=A4nen?= <jaakko.keranen@iki.fi>
Date: Sun, 22 Dec 2013 17:27:21 +0200
Subject: [PATCH] UI|Stereo 3D: Show latency setting only when head tracking
 available

---
 .../src/ui/dialogs/vrsettingsdialog.cpp       | 23 +++++++++++++------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/doomsday/client/src/ui/dialogs/vrsettingsdialog.cpp b/doomsday/client/src/ui/dialogs/vrsettingsdialog.cpp
index a7c83ff16e..bc4383e206 100644
--- a/doomsday/client/src/ui/dialogs/vrsettingsdialog.cpp
+++ b/doomsday/client/src/ui/dialogs/vrsettingsdialog.cpp
@@ -37,7 +37,9 @@ DENG_GUI_PIMPL(VRSettingsDialog)
     CVarSliderWidget *ipd;
     CVarSliderWidget *riftPredictionLatency;
 
-    Instance(Public *i) : Base(i)
+    Instance(Public *i)
+        : Base(i)
+        , riftPredictionLatency(0)
     {
         ScrollAreaWidget &area = self.area();
 
@@ -62,8 +64,11 @@ DENG_GUI_PIMPL(VRSettingsDialog)
         area.add(ipd = new CVarSliderWidget("rend-vr-ipd"));
         ipd->setDisplayFactor(1000);
 
-        area.add(riftPredictionLatency = new CVarSliderWidget("rend-vr-rift-latency"));
-        riftPredictionLatency->setDisplayFactor(1000);
+        if(VR::hasHeadOrientation())
+        {
+            area.add(riftPredictionLatency = new CVarSliderWidget("rend-vr-rift-latency"));
+            riftPredictionLatency->setDisplayFactor(1000);
+        }
     }
 
     void fetch()
@@ -84,9 +89,9 @@ VRSettingsDialog::VRSettingsDialog(String const &name)
     heading().setText(tr("3D & VR Settings"));
 
     LabelWidget *modeLabel     = LabelWidget::newWithText(tr("Mode:"), &area());
-    LabelWidget *dominantLabel = LabelWidget::newWithText(tr("Dominant Eye:"), &area());
     LabelWidget *heightLabel   = LabelWidget::newWithText(tr("Height (m):"), &area());
     LabelWidget *ipdLabel      = LabelWidget::newWithText(tr("IPD (mm):"), &area());
+    LabelWidget *dominantLabel = LabelWidget::newWithText(tr("Dominant Eye:"), &area());
     LabelWidget *latencyLabel  = LabelWidget::newWithText(tr("Prediction Latency:"), &area());
 
     // Layout.
@@ -95,11 +100,15 @@ VRSettingsDialog::VRSettingsDialog(String const &name)
     layout.setColumnAlignment(0, ui::AlignRight);
 
     layout << *modeLabel     << *d->mode
-           << Const(0)       << *d->swapEyes
-           << *dominantLabel << *d->dominantEye
            << *heightLabel   << *d->humanHeight
            << *ipdLabel      << *d->ipd
-           << *latencyLabel  << *d->riftPredictionLatency;
+           << *dominantLabel << *d->dominantEye
+           << Const(0)       << *d->swapEyes;
+
+    if(VR::hasHeadOrientation())
+    {
+        layout << *latencyLabel << *d->riftPredictionLatency;
+    }
 
     area().setContentSize(layout.width(), layout.height());