Description: fix scrollTop & scrollBottom function

IssueNo: https://gitee.com/openharmony/ace_ace_engine/issues/I4PB5F
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

frameworks/components/ui_list.cpp

@@ -354,17 +354,28 @@ bool UIList::MoveOffset(int16_t x, int16_t y)
         scrollListener_->OnScrollStart(onSelectedIndex_, onSelectedView_);
     }
 
-    if (direction_ == VERTICAL && !isLoopList_) {
-        if (childrenHead_ && (childrenHead_->GetViewIndex() == startIndex_) &&
-        	(childrenHead_->GetRelativeRect().GetTop()  == (GetStyle(STYLE_PADDING_TOP) + GetStyle(STYLE_BORDER_WIDTH)))) {
-            if (scrollListener_) {
+    if (!isLoopList_ && scrollListener_) {
+        if (direction_ == VERTICAL) {
+            if (childrenHead_ && (childrenHead_->GetViewIndex() == startIndex_) &&
+                childrenHead_->GetRelativeRect().GetTop() >= 0 &&
+                childrenHead_->GetRelativeRect().GetTop() - y < 0) {
                 scrollListener_->OnScrollTop(childrenHead_->GetViewIndex(), childrenHead_);
             }
+            if (childrenTail_ && (childrenTail_->GetViewIndex() == recycle_.GetAdapterItemCount()-1) &&
+                (childrenTail_->GetRelativeRect().GetBottom() <= GetContentRect().GetHeight() - 1) &&
+                (childrenTail_->GetRelativeRect().GetBottom() - y > GetContentRect().GetHeight() - 1)) {
+                    scrollListener_->OnScrollBottom(childrenTail_->GetViewIndex(), childrenTail_);
+            }
         }
-        if (childrenTail_ && (recycle_.GetView(childrenTail_->GetViewIndex() + 1) == nullptr) &&
-        	(childrenTail_->GetRelativeRect().GetBottom() + 1  ==
-            (GetRect().GetHeight() - GetStyle(STYLE_PADDING_BOTTOM) - GetStyle(STYLE_BORDER_WIDTH)))) {
-            if ((scrollListener_)) {
+        else {
+            if (childrenHead_ && (childrenHead_->GetViewIndex() == startIndex_) &&
+                childrenHead_->GetRelativeRect().GetLeft() >= 0 &&
+                childrenHead_->GetRelativeRect().GetLeft() - x < 0) {
+                scrollListener_->OnScrollTop(childrenHead_->GetViewIndex(), childrenHead_);
+            }
+            if (childrenTail_ && (childrenTail_->GetViewIndex() == recycle_.GetAdapterItemCount()-1) &&
+                (childrenTail_->GetRelativeRect().GetRight() <= GetContentRect().GetWidth() - 1) &&
+                (childrenTail_->GetRelativeRect().GetRight() - x > GetContentRect().GetWidth() - 1)) {
                 scrollListener_->OnScrollBottom(childrenTail_->GetViewIndex(), childrenTail_);
             }
         }

interfaces/kits/components/ui_list.h

@@ -100,8 +100,8 @@ public:
      *              be set to {@link NULL_SELECT_INDEX} if no child view is selected or no position is preset.
      * @param view Indicates the child view being selected at the preset position. This parameter should be set to
      *             <b>NULL</b> if no child view is selected or no position is preset.
-     * @since 1.0
-     * @version 1.0
+     * @since 8
+     * @version 8
      *
      */
     virtual void OnScrollTop(int16_t index, UIView* view) {}
@@ -113,8 +113,8 @@ public:
      *              be set to {@link NULL_SELECT_INDEX} if no child view is selected or no position is preset.
      * @param view Indicates the child view being selected at the preset position. This parameter should be set to
      *             <b>NULL</b> if no child view is selected or no position is preset.
-     * @since 1.0
-     * @version 1.0
+     * @since 8
+     * @version 8
      *
      */
     virtual void OnScrollBottom(int16_t index, UIView* view) {}