Space out 3 button nav on taskbar

* Add additional margin on nav buttons if
there's overlap w/ contextual button
* End spacing is dependent on grid layout

Bug: 223724516
Test: Tested on unfolded with different
grid sizes.

Change-Id: Ie814f35cd1f35629744050ee3f7242c5a8599883
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index d09642a..561d4f1 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -424,11 +424,13 @@
         if (areNavButtonsInline) {
             /*
              * 3 nav buttons +
+             * Spacing between nav buttons +
              * Little space at the end for contextual buttons +
              * Little space between icons and nav buttons
              */
             hotseatBarEndOffset = 3 * res.getDimensionPixelSize(R.dimen.taskbar_nav_buttons_size)
-                    + res.getDimensionPixelSize(R.dimen.taskbar_contextual_button_margin)
+                    + 2 * res.getDimensionPixelSize(R.dimen.taskbar_button_space_inbetween)
+                    + res.getDimensionPixelSize(inv.inlineNavButtonsEndSpacing)
                     + res.getDimensionPixelSize(R.dimen.taskbar_hotseat_nav_spacing);
         } else {
             hotseatBarEndOffset = 0;