private void StretchForDifferentDpi(IntPtr hwnd, int width, int height, Image masterImage)
{
Size offset = new Size(masterImage.Width - width, masterImage.Height - height);
//The original application of this method assumes that a master image was captured on a machine
//set to 96dpi and scales the window size appropriately. However, if a master was actually captured on a
//machine that is set to a dpi other than 96, we want to provide the option not to automatically scale the Window.
if (_resizeWindowForDpi)
{
IMasterDimension currentDpi = MasterMetadata.GetDimension("DpiDimension");
int standardDpi = 96;
if (currentDpi.GetCurrentValue() != standardDpi.ToString())
{
int dpi = int.Parse(currentDpi.GetCurrentValue());
float ratio = (float)dpi / standardDpi;
offset.Width = (int)(masterImage.Width * ratio - width + .5);
offset.Height = (int)(masterImage.Height * ratio - height + .5);
}
}
if (offset.IsEmpty)
{
return;
}
ResizeWindow(hwnd, offset.Width, offset.Height, true);
}
/// <summary>
/// Retrieve the OSinfo stored in the image
/// </summary>
/// <param name="image">The image to parse</param>
/// <returns>returne a MasterMetadata object containing the description and criteria</returns>
public static MasterMetadata MetadataFromImage(Image image)
{
MasterMetadata retVal = new MasterMetadata();
// Check if the image contains criteria & description
List <int> idList = new List <int>();
idList.AddRange(image.PropertyIdList);
if (idList.Contains(EXIF_IMAGEINFO))
{
// Deserialize Description and Criteria from the image metadata (saved as xmlNode)
PropertyItem pi = image.GetPropertyItem(EXIF_IMAGEINFO);
// Remove trailing '\0' since it messes up deserialization
string serializedInfo = System.Text.UTF8Encoding.UTF8.GetString(pi.Value);
System.IO.MemoryStream memoryStream = new System.IO.MemoryStream(System.Text.UTF8Encoding.UTF8.GetBytes(serializedInfo.Trim('\0')));
XmlReaderSettings readerSettings = new XmlReaderSettings();
memoryStream.Position = 0;
XmlReader reader = XmlReader.Create(memoryStream, readerSettings);
while (reader.Read())
{
string dim = string.Empty;
string val = string.Empty;
string index = string.Empty;
if (reader.Name == "Dim")
{
dim = reader["name"];
val = reader["value"];
retVal.Description[MasterMetadata.GetDimension(dim)] = val;
}
if (reader.Name == "Index")
{
index = reader["name"];
retVal._criteria.Add(MasterMetadata.GetDimension(index));
}
}
}
return(retVal);
}