4 files changed, 75 insertions, 6 deletions
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index ac79223738..d6a1fbd124 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -2469,16 +2469,16 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
-    <key>DisableMouseWarp</key>
+    <key>MouseWarpMode</key>
     <map>
       <key>Comment</key>
-      <string>Disable warping of the mouse to the center of the screen during alt-zoom and mouse look. Useful with certain input devices, mouse sharing programs like Synergy, or running under Parallels.</string>
+      <string>Controls warping of the mouse to the center of the screen during alt-zoom and mouse look. Useful with certain input devices, mouse sharing programs like Synergy, or running under Parallels. 0 - automatic, 1 - on, 2 - off</string>
       <key>Persist</key>
       <integer>1</integer>
       <key>Type</key>
-      <string>Boolean</string>
+      <string>S32</string>
       <key>Value</key>
-      <integer>0</integer>
+      <integer>1</integer>
     </map>
     <key>DisableExternalBrowser</key>
     <map>
diff --git a/indra/newview/llfloaterpreference.cpp b/indra/newview/llfloaterpreference.cpp
index 5a39d41478..99161d8d93 100644
--- a/indra/newview/llfloaterpreference.cpp
+++ b/indra/newview/llfloaterpreference.cpp
@@ -774,6 +774,17 @@ void LLFloaterPreference::onOpen(const LLSD& key)
     // Load (double-)click to walk/teleport settings.
     updateClickActionViews();
 
+#if LL_LINUX
+    // Lixux doesn't support automatic mode
+    LLComboBox* combo = getChild<LLComboBox>("double_click_action_combo");
+    S32 mode = gSavedSettings.getS32("MouseWarpMode");
+    if (mode == 0)
+    {
+        combo->setValue("1");
+    }
+    combo->setEnabledByValue("0", false);
+#endif
+
     // Enabled/disabled popups, might have been changed by user actions
     // while preferences floater was closed.
     buildPopupLists();
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 3849c286c5..670a3b2939 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -3340,7 +3340,31 @@ void LLViewerWindow::clearPopups()
 
 void LLViewerWindow::moveCursorToCenter()
 {
-    if (! gSavedSettings.getBOOL("DisableMouseWarp"))
+    bool mouse_warp = false;
+    LLCachedControl<S32> mouse_warp_mode(gSavedSettings, "MouseWarpMode", 1);
+
+    switch (mouse_warp_mode())
+    {
+    case 0:
+        // For Windows:
+        // Mouse usually uses 'delta' position since it isn't aware of own location, keep it centered.
+        // Touch screen reports absolute or virtual absolute position and warping a physical
+        // touch is pointless, so don't move it.
+        //
+        // MacOS
+        // If 'decoupled', CGAssociateMouseAndMouseCursorPosition can make mouse stay in
+        // one place and not move, do not move it (needs testing).
+        mouse_warp = mWindow->isWrapMouse();
+        break;
+    case 1:
+        mouse_warp = true;
+        break;
+    default:
+        mouse_warp = false;
+        break;
+    }
+
+    if (mouse_warp)
     {
         S32 x = getWorldViewWidthScaled() / 2;
         S32 y = getWorldViewHeightScaled() / 2;
diff --git a/indra/newview/skins/default/xui/en/panel_preferences_move.xml b/indra/newview/skins/default/xui/en/panel_preferences_move.xml
index 4aafceb112..3a5a8cbfec 100644
--- a/indra/newview/skins/default/xui/en/panel_preferences_move.xml
+++ b/indra/newview/skins/default/xui/en/panel_preferences_move.xml
@@ -202,9 +202,43 @@
    height="10"
    layout="topleft"
    left="86"
-   name="single_click_action_lbl"
+   name="mouse_warp_lbl"
    width="150"
    top_pad="20">
+    Mouse Warp:
+  </text>
+  <combo_box
+   control_name="MouseWarpMode"
+   height="23"
+   layout="topleft"
+   left_pad="10"
+   top_delta="-6"
+   name="mouse_warp_combo"
+   tooltip="Controls warping of the mouse to the center of the screen during alt-zoom and mouse look."
+   width="200">
+    <combo_box.item
+     label="Automatic"
+     name="0"
+     value="0"/>
+    <combo_box.item
+     label="On"
+     name="1"
+     value="1"/>
+    <combo_box.item
+     label="Off"
+     name="2"
+     value="2"/>
+  </combo_box>
+  <text
+   follows="left|top"
+   type="string"
+   length="1"
+   height="10"
+   layout="topleft"
+   left="86"
+   name="single_click_action_lbl"
+   width="150"
+   top_pad="12">
     Single click on land:
   </text>
   <combo_box