Merge pull request #270 from Unity-Technologies/siyaoH/1.17/fixAndroid

Siyao h/1.17/fix android

com.unity.uiwidgets/Runtime/material/text_selection.cs

         }
 
         public override Offset getHandleAnchor(TextSelectionHandleType type, float textLineHeight) {
-            switch (type) {
-                case TextSelectionHandleType.left:
-                    return new Offset(MaterialUtils._kHandleSize, 0);
-                case TextSelectionHandleType.right:
-                    return Offset.zero;
-                default:
-                    return new Offset(MaterialUtils._kHandleSize / 2, -4);
-            }
+           return Offset.zero;
         }
 
         new bool canSelectAll(TextSelectionDelegate selectionDelegate) {

com.unity.uiwidgets/Runtime/widgets/text_selection.cs

 using Unity.UIWidgets.scheduler;
 using Unity.UIWidgets.service;
 using Unity.UIWidgets.ui;
-using Unity.UIWidgets.widgets;
 using UnityEngine;
 using Object = System.Object;
 using Rect = Unity.UIWidgets.ui.Rect;
                 showWhenUnlinked: false,
                 child: new FadeTransition(
                     opacity: _opacity,
-                    child: new GestureDetector(
-                        behavior: HitTestBehavior.translucent,
-                        dragStartBehavior: widget.dragStartBehavior,
-                        onPanStart: _handleDragStart,
-                        onPanUpdate: _handleDragUpdate,
-                        onTap: _handleTap,
-                        child: new Padding(
-                            padding: EdgeInsets.only(
-                                left: padding.left,
-                                top: padding.top,
-                                right: padding.right,
-                                bottom: padding.bottom
-                                ), 
-                            child: widget.selectionControls.buildHandle(context, type,
-                                widget.renderObject.preferredLineHeight)
+                    child: new Container(
+                        alignment: Alignment.topLeft,
+                        width: interactiveRect.width,
+                        height: interactiveRect.height,
+                        child: new GestureDetector(
+                            behavior: HitTestBehavior.translucent,
+                            dragStartBehavior: widget.dragStartBehavior,
+                            onPanStart: _handleDragStart,
+                            onPanUpdate: _handleDragUpdate,
+                            onTap: _handleTap,
+                            child: new Padding(
+                                padding: EdgeInsets.only(
+                                    left: padding.left,
+                                    top: padding.top,
+                                    right: padding.right,
+                                    bottom: padding.bottom
+                                ),
+                                child: widget.selectionControls.buildHandle(context, type,
+                                    widget.renderObject.preferredLineHeight)
+                            )
+
         }
 
         TextSelectionHandleType _chooseType(

engine/src/lib/ui/text/paragraph.cc

   // Then there are boxes.size() groups of 5 which are LTRBD, where D is the
   // text direction index.
   int size = boxes.size() * 5;
-  Float32List result = {(float*)malloc(sizeof(float) * size),
-                        (int)boxes.size() * size};
+  Float32List result = {(float*)malloc(sizeof(float) * size), size};
   unsigned long position = 0;
   for (unsigned long i = 0; i < boxes.size(); i++) {
     const txt::Paragraph::TextBox& box = boxes[i];