fix copy/paste using trackball on passion

This fix should be considered for passion mr1, but
does not affect sholes -- this is a trackball only bug.

The selection caret and arrow now take the scale factor and
the height of the title bar into account when preparing the
canvas for drawing.

Clicking the trackball at the end of selecting text no longer
sends a click event.

Requires a companion fix in external/webkit
Fixes http://b/issue?id=2187591

core/java/android/webkit/WebView.java

@@ -2967,12 +2967,12 @@ public class WebView extends AbsoluteLayout
                 animateScroll);
 
         if (mNativeClass == 0) return;
-        if (mShiftIsPressed) {
+        if (mShiftIsPressed && !animateZoom) {
             if (mTouchSelection) {
                 nativeDrawSelectionRegion(canvas);
             } else {
-                nativeDrawSelection(canvas, mSelectX, mSelectY,
-                        mExtendSelection);
+                nativeDrawSelection(canvas, mInvActualScale, getTitleHeight(),
+                        mSelectX, mSelectY, mExtendSelection);
             }
         } else if (drawCursorRing) {
             if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) {
@@ -4137,6 +4137,9 @@ public class WebView extends AbsoluteLayout
             return true;
         }
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
+            if (mShiftIsPressed) {
+                return true; // discard press if copy in progress
+            }
             mTrackballDown = true;
             if (mNativeClass == 0) {
                 return false;
@@ -4165,6 +4168,7 @@ public class WebView extends AbsoluteLayout
                 } else {
                     mExtendSelection = true;
                 }
+                return true; // discard press if copy in progress
             }
             if (DebugFlags.WEB_VIEW) {
                 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev
@@ -5710,8 +5714,8 @@ public class WebView extends AbsoluteLayout
     private native void     nativeDestroy();
     private native void     nativeDrawCursorRing(Canvas content);
     private native void     nativeDrawMatches(Canvas canvas);
-    private native void     nativeDrawSelection(Canvas content
-            , int x, int y, boolean extendSelection);
+    private native void     nativeDrawSelection(Canvas content, float scale,
+            int offset, int x, int y, boolean extendSelection);
     private native void     nativeDrawSelectionRegion(Canvas content);
     private native void     nativeDumpDisplayTree(String urlOrNull);
     private native int      nativeFindAll(String findLower, String findUpper);