/// <summary>
/// Creates a simple shape. This includes such shapes as lines, rectangles,
/// and ovals.
/// </summary>
/// <param name="anchor">the client anchor describes how this Group is attached
/// to the sheet.</param>
/// <returns>the newly created shape.</returns>
public HSSFSimpleShape CreateSimpleShape(HSSFClientAnchor anchor)
{
HSSFSimpleShape shape = new HSSFSimpleShape(null, anchor);
shape.Anchor = anchor;
AddShape(shape);
return(shape);
}
/// <summary>
/// Creates a new Group record stored Under this patriarch.
/// </summary>
/// <param name="anchor">the client anchor describes how this Group is attached
/// to the sheet.</param>
/// <returns>the newly created Group.</returns>
public HSSFShapeGroup CreateGroup(HSSFClientAnchor anchor)
{
HSSFShapeGroup group = new HSSFShapeGroup(null, anchor);
group.Anchor = anchor;
AddShape(group);
return(group);
}
/// <summary>
/// Calculate the preferred size for this picture.
/// </summary>
/// <param name="scale">the amount by which image dimensions are multiplied relative to the original size.</param>
/// <returns>HSSFClientAnchor with the preferred size for this image</returns>
public HSSFClientAnchor GetPreferredSize(double scale)
{
HSSFClientAnchor anchor = (HSSFClientAnchor)Anchor;
Size size = GetImageDimension();
double scaledWidth = size.Width * scale;
double scaledHeight = size.Height * scale;
float w = 0;
//space in the leftmost cell
w += GetColumnWidthInPixels(anchor.Col1) * (1 - (float)anchor.Dx1 / 1024);
short col2 = (short)(anchor.Col1 + 1);
int dx2 = 0;
while (w < scaledWidth)
{
w += GetColumnWidthInPixels(col2++);
}
if (w > scaledWidth)
{
//calculate dx2, offset in the rightmost cell
col2--;
double cw = GetColumnWidthInPixels(col2);
double delta = w - scaledWidth;
dx2 = (int)((cw - delta) / cw * 1024);
}
anchor.Col2 = col2;
anchor.Dx2 = dx2;
float h = 0;
h += (1 - (float)anchor.Dy1 / 256) * GetRowHeightInPixels(anchor.Row1);
int row2 = anchor.Row1 + 1;
int dy2 = 0;
while (h < scaledHeight)
{
h += GetRowHeightInPixels(row2++);
}
if (h > scaledHeight)
{
row2--;
double ch = GetRowHeightInPixels(row2);
double delta = h - scaledHeight;
dy2 = (int)((ch - delta) / ch * 256);
}
anchor.Row2 = row2;
anchor.Dy2 = dy2;
return(anchor);
}
/// <summary>
/// Creates a picture.
/// </summary>
/// <param name="anchor">the client anchor describes how this Group is attached
/// to the sheet.</param>
/// <param name="pictureIndex">Index of the picture.</param>
/// <returns>the newly created shape.</returns>
public IPicture CreatePicture(HSSFClientAnchor anchor, int pictureIndex)
{
HSSFPicture shape = new HSSFPicture(null, (HSSFClientAnchor)anchor);
shape.PictureIndex = pictureIndex;
shape.Anchor = (HSSFClientAnchor)anchor;
AddShape(shape);
EscherBSERecord bse = (_sheet.Workbook as HSSFWorkbook).Workbook.GetBSERecord(pictureIndex);
bse.Ref = (bse.Ref + 1);
return(shape);
}
/// <summary>
/// Reset the image to the original size.
/// </summary>
public void Resize(double scale)
{
HSSFClientAnchor anchor = (HSSFClientAnchor)Anchor;
anchor.AnchorType = 2;
IClientAnchor pref = GetPreferredSize(scale);
int row2 = anchor.Row1 + (pref.Row2 - pref.Row1);
int col2 = anchor.Col1 + (pref.Col2 - pref.Col1);
anchor.Col2 = col2;
anchor.Dx1 = 0;
anchor.Dx2 = pref.Dx2;
anchor.Row2 = row2;
anchor.Dy1 = 0;
anchor.Dy2 = pref.Dy2;
}
