Esempio n. 1
0
        public bool GetItemIndexAndPosAtGivenPos(float pos, ref int index, ref float itemPos)
        {
            Update(true);
            index   = 0;
            itemPos = 0f;
            int count = mItemSizeGroupList.Count;

            if (count == 0)
            {
                return(true);
            }
            ItemSizeGroup hitGroup = null;

            int low  = 0;
            int high = count - 1;

            if (mItemDefaultSize == 0f)
            {
                if (mMaxNotEmptyGroupIndex < 0)
                {
                    mMaxNotEmptyGroupIndex = 0;
                }
                high = mMaxNotEmptyGroupIndex;
            }
            while (low <= high)
            {
                int           mid    = (low + high) / 2;
                ItemSizeGroup tGroup = mItemSizeGroupList[mid];
                if (tGroup.mGroupStartPos <= pos && tGroup.mGroupEndPos >= pos)
                {
                    hitGroup = tGroup;
                    break;
                }
                else if (pos > tGroup.mGroupEndPos)
                {
                    low = mid + 1;
                }
                else
                {
                    high = mid - 1;
                }
            }
            int hitIndex = -1;

            if (hitGroup != null)
            {
                hitIndex = hitGroup.GetItemIndexByPos(pos - hitGroup.mGroupStartPos);
            }
            else
            {
                return(false);
            }
            if (hitIndex < 0)
            {
                return(false);
            }
            index   = hitIndex + hitGroup.mGroupIndex * mItemMaxCountPerGroup;
            itemPos = hitGroup.GetItemStartPos(hitIndex);
            return(true);
        }
Esempio n. 2
0
        public bool GetItemIndexAndPosAtGivenPos(float pos, ref int index, ref float itemPos)
        {
            this.Update(true);
            index   = 0;
            itemPos = 0.0f;
            int count = this.mItemSizeGroupList.Count;

            if (count == 0)
            {
                return(true);
            }
            ItemSizeGroup itemSizeGroup = (ItemSizeGroup)null;
            int           num1          = 0;
            int           num2          = count - 1;

            if ((double)this.mItemDefaultSize == 0.0)
            {
                if (this.mMaxNotEmptyGroupIndex < 0)
                {
                    this.mMaxNotEmptyGroupIndex = 0;
                }
                num2 = this.mMaxNotEmptyGroupIndex;
            }
            while (num1 <= num2)
            {
                int           index1         = (num1 + num2) / 2;
                ItemSizeGroup mItemSizeGroup = this.mItemSizeGroupList[index1];
                if ((double)mItemSizeGroup.mGroupStartPos <= (double)pos && (double)mItemSizeGroup.mGroupEndPos >= (double)pos)
                {
                    itemSizeGroup = mItemSizeGroup;
                    break;
                }
                if ((double)pos > (double)mItemSizeGroup.mGroupEndPos)
                {
                    num1 = index1 + 1;
                }
                else
                {
                    num2 = index1 - 1;
                }
            }
            if (itemSizeGroup == null)
            {
                return(false);
            }
            int itemIndexByPos = itemSizeGroup.GetItemIndexByPos(pos - itemSizeGroup.mGroupStartPos);

            if (itemIndexByPos < 0)
            {
                return(false);
            }
            index   = itemIndexByPos + itemSizeGroup.mGroupIndex * 100;
            itemPos = itemSizeGroup.GetItemStartPos(itemIndexByPos);
            return(true);
        }
Esempio n. 3
0
        public void GetItemIndexAndPosAtGivenPos(float pos, ref int index, ref float itemPos)
        {
            this.Update(true);
            index   = 0;
            itemPos = 0f;
            int count = this.mItemSizeGroupList.Count;

            if (count == 0)
            {
                return;
            }
            ItemSizeGroup hitGroup = null;

            int low  = 0;
            int high = count - 1;

            while (low <= high)
            {
                int           mid    = (low + high) / 2;
                ItemSizeGroup tGroup = this.mItemSizeGroupList[mid];
                if (tGroup.mGroupStartPos <= pos && tGroup.mGroupEndPos >= pos)
                {
                    hitGroup = tGroup;
                    break;
                }
                else if (pos > tGroup.mGroupEndPos)
                {
                    low = mid + 1;
                }
                else
                {
                    high = mid - 1;
                }
            }
            int hitIndex = -1;

            if (hitGroup != null)
            {
                hitIndex = hitGroup.GetItemIndexByPos(pos - hitGroup.mGroupStartPos);
            }
            else
            {
                return;
            }
            if (hitIndex < 0)
            {
                return;
            }
            index   = hitIndex + hitGroup.mGroupIndex * mItemMaxCountPerGroup;
            itemPos = hitGroup.GetItemStartPos(hitIndex);
        }