static private Image GetBitmapFromResource(Type t, string bitmapname, bool large)
{
if (bitmapname == null)
{
return(null);
}
Image img = null;
// load the image from the manifest resources.
//
Stream stream = BitmapSelector.GetResourceStream(t, bitmapname);
if (stream != null)
{
Bitmap b = new Bitmap(stream);
img = b;
MakeBackgroundAlphaZero(b);
if (large)
{
img = new Bitmap(b, largeSize.Width, largeSize.Height);
}
if (DpiHelper.IsScalingRequired)
{
b = (Bitmap)img;
DpiHelper.ScaleBitmapLogicalToDevice(ref b);
img = b;
}
}
return(img);
}
// Just forwards to Image.FromFile eating any non-critical exceptions that may result.
private static Image?GetImageFromFile(string?imageFile, bool large, bool scaled = true)
{
Image?image = null;
try
{
if (imageFile != null)
{
string?ext = Path.GetExtension(imageFile);
if (ext != null && string.Equals(ext, ".ico", StringComparison.OrdinalIgnoreCase))
{
//ico files support both large and small, so we respect the large flag here.
using (FileStream reader = File.OpenRead(imageFile !))
{
image = GetIconFromStream(reader, large, scaled);
}
}
else if (!large)
{
//we only read small from non-ico files.
image = Image.FromFile(imageFile !);
Bitmap?b = image as Bitmap;
if (DpiHelper.IsScalingRequired && scaled)
{
DpiHelper.ScaleBitmapLogicalToDevice(ref b);
}
}
}
}
catch (Exception e) when(!ClientUtils.IsCriticalException(e))
{
}
return(image);
}
/// <include file='doc\ToolboxItem.uex' path='docs/doc[@for="ToolboxItem.ToolboxItem"]/*' />
/// <devdoc>
/// Initializes a new instance of the ToolboxItem class.
/// </devdoc>
public ToolboxItem()
{
if (!isScalingInitialized)
{
if (DpiHelper.IsScalingRequired)
{
iconWidth = DpiHelper.LogicalToDeviceUnitsX(ICON_DIMENSION);
iconHeight = DpiHelper.LogicalToDeviceUnitsY(ICON_DIMENSION);
}
isScalingInitialized = true;
}
}
// Just forwards to Image.FromFile eating any non-critical exceptions that may result.
private static Image GetImageFromFile(string imageFile, bool large, bool scaled = true)
{
Image image = null;
try
{
if (imageFile != null)
{
imageFile = GetFileNameFromBitmapSelector(imageFile);
string ext = Path.GetExtension(imageFile);
if (ext != null && string.Equals(ext, ".ico", StringComparison.OrdinalIgnoreCase))
{
//ico files support both large and small, so we respect the large flag here.
FileStream reader = System.IO.File.Open(imageFile, FileMode.Open);
if (reader != null)
{
try
{
image = GetIconFromStream(reader, large, scaled);
}
finally
{
reader.Close();
}
}
}
else if (!large)
{
//we only read small from non-ico files.
image = Image.FromFile(imageFile);
Bitmap b = image as Bitmap;
if (DpiHelper.IsScalingRequired && scaled)
{
DpiHelper.ScaleBitmapLogicalToDevice(ref b);
}
}
}
}
catch (Exception e)
{
if (ClientUtils.IsCriticalException(e))
{
throw;
}
Debug.Fail("Failed to load toolbox image '" + imageFile + "':\r\n" + e.ToString());
}
return(image);
}
private static Image GetIconFromStream(Stream stream, bool large)
{
if (stream == null)
{
return(null);
}
Icon ico = new Icon(stream);
Icon sizedico = new Icon(ico, large ? largeSize : smallSize);
Bitmap b = sizedico.ToBitmap();
if (DpiHelper.IsScalingRequired)
{
DpiHelper.ScaleBitmapLogicalToDevice(ref b);
}
return(b);
}