public ImagePdfBytesInfo(PdfImageXObject imageXObject)
{
pngColorType = -1;
bpc = imageXObject.GetPdfObject().GetAsNumber(PdfName.BitsPerComponent).IntValue();
pngBitDepth = bpc;
palette = null;
icc = null;
stride = 0;
width = (int)imageXObject.GetWidth();
height = (int)imageXObject.GetHeight();
colorspace = imageXObject.GetPdfObject().Get(PdfName.ColorSpace);
decode = imageXObject.GetPdfObject().GetAsArray(PdfName.Decode);
FindColorspace(colorspace, true);
}
/// <summary>
/// Calculates a rectangle with the specified coordinates and height, and the width is
/// calculated in such a way that the original proportions of the xObject do not change.
/// </summary>
/// <remarks>
/// Calculates a rectangle with the specified coordinates and height, and the width is
/// calculated in such a way that the original proportions of the xObject do not change.
/// <para />
/// To calculate the original width and height of the xObject, the BBox and Matrix fields
/// are used. For mor information see paragraph 8.10.1 in ISO-32000-1.
/// </remarks>
/// <param name="xObject">the xObject for which we are calculating the rectangle</param>
/// <param name="x">the x-coordinate of the lower-left corner of the rectangle</param>
/// <param name="y">the y-coordinate of the lower-left corner of the rectangle</param>
/// <param name="height">the height of the rectangle</param>
/// <returns>the rectangle with specified coordinates and height</returns>
public static Rectangle CalculateProportionallyFitRectangleWithHeight(iText.Kernel.Pdf.Xobject.PdfXObject
xObject, float x, float y, float height)
{
if (xObject is PdfFormXObject)
{
PdfFormXObject formXObject = (PdfFormXObject)xObject;
Rectangle bBox = PdfFormXObject.CalculateBBoxMultipliedByMatrix(formXObject);
return(new Rectangle(x, y, (height / bBox.GetHeight()) * bBox.GetWidth(), height));
}
else
{
if (xObject is PdfImageXObject)
{
PdfImageXObject imageXObject = (PdfImageXObject)xObject;
return(new Rectangle(x, y, (height / imageXObject.GetHeight()) * imageXObject.GetWidth(), height));
}
else
{
throw new ArgumentException("PdfFormXObject or PdfImageXObject expected.");
}
}
}
