/// <summary>
/// 按照位置整理出每个报表项的左上位置列表
/// 两报表项之间位置关系有三种：
/// 1. 无影响
/// 2. 垂直依赖
/// 3. 水平依赖
/// </summary>
void SortItems()
{
RptItemBase item;
RptItemInst itemInst;
List <RptItemInst> topList = new List <RptItemInst>();
List <RptItemInst> leftList = new List <RptItemInst>();
for (int i = 0; i < _children.Count; i++)
{
item = _children[i].Item;
itemInst = _children[i];
topList.Clear();
leftList.Clear();
// 查找所有上侧左侧的报表项
for (int j = 0; j < _children.Count; j++)
{
RptItemBase tgt = _children[j].Item;
RptItemInst tgtInst = _children[j];
Type tp = tgtInst.GetType();
if ((tgt.Row + tgt.RowSpan - 1) < item.Row && item.IsCrossWithColumns(tgt.Col, tgt.ColSpan))
{
topList.Add(tgtInst);
}
else if ((tgt.Col + tgt.ColSpan - 1) < item.Col && item.IsCrossWithRows(tgt.Row, tgt.RowSpan))
{
leftList.Add(tgtInst);
}
}
if (topList.Count > 0)
{
itemInst.TopItems = GetTopLeftItems(topList, true);
}
if (leftList.Count > 0)
{
itemInst.LeftItems = GetTopLeftItems(leftList, false);
}
}
}
/// <summary>
/// 是否需要垂直分页
/// </summary>
/// <param name="p_item"></param>
/// <returns></returns>
public bool TestPageBreak(RptItemInst p_item)
{
RptRegion region = p_item.Region;
PageDefine rowPage = Rows[Rows.Count - 1];
int lastRow = rowPage.Start + rowPage.Count;
int deltaRow = region.Row + region.RowSpan - lastRow;
RptItemBase item = p_item.Item;
double topHeight = 0;
if (deltaRow > 0)
{
topHeight = rowPage.Size.Sum();
}
else
{
for (int i = 0; i < region.Row - rowPage.Start; i++)
{
topHeight += rowPage.Size[i];
}
}
return(topHeight + item.Height > BodyHeight - TblFooterHeight);
}
/// <summary>
/// 补充报表项及左上的行列定义，处理分页
/// </summary>
/// <param name="p_item"></param>
void PrepareItem(RptItemInst p_item)
{
RptRegion region = p_item.Region;
RptItemBase item = p_item.Item;
PageDefine rowPage = Rows[Rows.Count - 1];
PageDefine colPage = Cols[Cols.Count - 1];
int lastRow = rowPage.Start + rowPage.Count;
int lastCol = colPage.Start + colPage.Count;
int deltaRow = region.Row + region.RowSpan - lastRow;
int deltaCol = region.Col + region.ColSpan - lastCol;
//已经垂直分页
if (region.Row < rowPage.Start && region.Row + region.RowSpan > rowPage.Start)
{
deltaRow = region.RowSpan - rowPage.Count;
region.Row = rowPage.Start;
}
//已经水平分页
if (region.Col < colPage.Start && region.Col + region.ColSpan > colPage.Start)
{
deltaCol = region.ColSpan - colPage.Count;
region.Col = colPage.Start;
}
// 无需补充
if (deltaRow <= 0 && deltaCol <= 0)
{
return;
}
// 补充行定义
if (deltaRow > 0)
{
// 页面已有的总高
double topHeight = rowPage.Size.Sum();
int blankRow = deltaRow - region.RowSpan;
double heights = 0;
if (blankRow < 0)
{
for (int i = 0; i < deltaRow; i++)
{
heights += item.Part.GetRowHeight(item.Row + item.RowSpan - deltaRow + i);
}
//需要分页
if (!_pageEnding && topHeight + heights > (BodyHeight - TblFooterHeight) && region.Row != rowPage.Start)
{
VerPageBreak(ref rowPage, ref topHeight);
//从元素的起始位置开始分页
for (int j = 0; j < region.RowSpan; j++)
{
double height = item.Part.GetRowHeight(item.Row + j);
rowPage.Size.Add(height);
topHeight += height;
}
}
else
{
//不需要分页
for (int i = 0; i < deltaRow; i++)
{
double height = item.Part.GetRowHeight(item.Row + item.RowSpan - deltaRow + i);
if (topHeight + height > (BodyHeight - TblFooterHeight))//元素高度大于页面高度，截断
{
height = (BodyHeight - TblFooterHeight - topHeight) < 0 ? 0 : BodyHeight - TblFooterHeight - topHeight;
}
rowPage.Size.Add(height);
topHeight += height;
}
}
}
else
{
for (int i = 0; i < deltaRow; i++)
{
double height = item.Part.GetRowHeight(item.Row + item.RowSpan - deltaRow + i);
if (i == blankRow)
{
for (int j = i; j < deltaRow; j++)
{
heights += item.Part.GetRowHeight(item.Row + item.RowSpan - deltaRow + j);
}
}
// 在报表项上
bool inItem = lastRow + i >= region.Row;
if (height > BodyHeight - TblFooterHeight)
{
height = BodyHeight - TblFooterHeight;
}
if (i == blankRow && heights > BodyHeight - TblFooterHeight)
{
heights = BodyHeight - TblFooterHeight;
}
// 需要垂直分页
bool verBreak = (i == blankRow) ? (topHeight + heights > BodyHeight - TblFooterHeight)
: (topHeight + height > BodyHeight - TblFooterHeight);
if (!_pageEnding && verBreak)
{
VerPageBreak(ref rowPage, ref topHeight, inItem);
}
rowPage.Size.Add(height);
topHeight += height;
}
}
// 重新计算行位置
region.Row = rowPage.Start + rowPage.Count - region.RowSpan;
}
//补充列定义
if (deltaCol > 0)
{
// 页面已有的宽度
double leftWidth = colPage.Size.Sum();
int blankCol = deltaCol - region.ColSpan;
double widths = 0;
//不需要补充空行
if (blankCol < 0)
{
for (int i = 0; i < deltaCol; i++)
{
widths += Info.Root.Cols[item.Col + item.ColSpan - deltaCol + i];
}
//需要分页
if (!_pageEnding && leftWidth + widths > BodyWidth && region.Col != colPage.Start)
{
HorPageBreak(ref colPage, ref leftWidth);
//从元素的起始位置开始分页
for (int j = 0; j < region.ColSpan; j++)
{
double width = Info.Root.Cols[item.Col + j];
colPage.Size.Add(width);
leftWidth += width;
}
}
else
{
//不需要分页
for (int i = 0; i < deltaCol; i++)
{
double width = Info.Root.Cols[item.Col + item.ColSpan - deltaCol + i];
if (leftWidth + width > BodyWidth)//元素宽度大于页面宽度，截断
{
width = (BodyWidth - leftWidth) < 0 ? 0 : BodyWidth - leftWidth;
}
colPage.Size.Add(width);
leftWidth += width;
}
}
}
else
{
//需要空行补充
for (int i = 0; i < deltaCol; i++)
{
double width = Info.Root.Cols[item.Col + item.ColSpan - deltaCol + i];
if (i == blankCol)
{
for (int j = i; j < deltaCol; j++)
{
widths += Info.Root.Cols[item.Col + item.ColSpan - deltaCol + j];
}
}
// 在报表项上
bool inItem = lastCol + i >= region.Col;
// 需要水平分页
bool horBreak = (i == blankCol) ? (leftWidth + widths > BodyWidth) : (leftWidth + width > BodyWidth);
if (!_pageEnding && horBreak)
{
HorPageBreak(ref colPage, ref leftWidth, inItem);
}
colPage.Size.Add(width);
leftWidth += width;
}
}
// 重新计算列位置
region.Col = colPage.Start + colPage.Count - region.ColSpan;
}
}
/// <summary>
/// 添加子项
/// </summary>
/// <param name="p_item"></param>
public void AddChild(RptItemInst p_item)
{
_children.Add(p_item);
}
