internal System.Drawing.Image GetGdiImage(IconCollectionInfo collectionInfo, IconFileInfo fileInfo)
{
string iconFileKey = GetIconFileKey(collectionInfo, fileInfo);
System.Drawing.Image result = null;
if (!m_gdiImages.TryGetValue(iconFileKey, out result))
{
// Try to load the icon from svg file
var svgIconLink = TryFindSvgIcon(collectionInfo, fileInfo);
if (svgIconLink != null)
{
Stopwatch sw = new Stopwatch();
sw.Start();
using (Stream inStream = svgIconLink.OpenRead())
{
Svg.SvgDocument svgDoc = Svg.SvgDocument.Open <Svg.SvgDocument>(inStream);
System.Drawing.Bitmap targetBitmap = new System.Drawing.Bitmap(collectionInfo.IconSideWidthPixel, collectionInfo.IconSideWidthPixel);
using (CustomSvgRenderer svgRenderer = new CustomSvgRenderer(targetBitmap, Color.FromArgb(collectionInfo.IconForeColor)))
{
svgDoc.Overflow = Svg.SvgOverflow.Auto;
svgRenderer.SetBoundable(new GenericBoundable(0f, 0f, (float)targetBitmap.Width, (float)targetBitmap.Height));
SizeF dimensions = svgDoc.GetDimensions();
svgRenderer.ScaleTransform((float)targetBitmap.Width / dimensions.Width, (float)targetBitmap.Height / dimensions.Height, MatrixOrder.Append);
svgDoc.Draw(svgRenderer);
}
result = targetBitmap;
}
sw.Stop();
}
// Try to load the icon from png file
if (result == null)
{
var pngIconLink = TryFindPngIcon(collectionInfo, fileInfo);
if (pngIconLink != null)
{
using (Stream inStream = pngIconLink.OpenRead())
{
result = System.Drawing.Bitmap.FromStream(inStream);
}
}
}
m_gdiImages[iconFileKey] = result;
}
return(result);
}
/// <summary>
/// Generates a key describing the given icon information.
/// </summary>
internal string GetIconFileKey(IconCollectionInfo collectionInfo, IconFileInfo fileInfo)
{
StringBuilder keyBuilder = new StringBuilder(100);
keyBuilder.Append($"{collectionInfo.IconAssembly.GetName().Name}");
keyBuilder.Append(':');
keyBuilder.Append($"{collectionInfo.IconAssemblyDefaultNamespace}.Assets.Icons.{collectionInfo.IconEnumType.Name}.{fileInfo.ImageName}");
keyBuilder.Append('_');
keyBuilder.Append($"{collectionInfo.IconSideWidthPixel}x{collectionInfo.IconSideWidthPixel}");
keyBuilder.Append('_');
keyBuilder.Append(collectionInfo.IconForeColor);
return(keyBuilder.ToString());
}
/// <summary>
/// Tries to find a default png icon in the embedded resources of the assembly
/// where the icon enum is located.
/// </summary>
/// <param name="collectionInfo">Information about the icon collection.</param>
/// <param name="fileInfo">Information about the icon file.</param>
private AssemblyResourceLink TryFindSvgIcon(IconCollectionInfo collectionInfo, IconFileInfo fileInfo)
{
string resourcePath =
$"{collectionInfo.IconAssemblyDefaultNamespace}.Assets.Icons.{collectionInfo.IconEnumType.Name}.{fileInfo.ImageName}.svg";
AssemblyResourceLink resourceLink = new AssemblyResourceLink(
collectionInfo.IconAssembly,
resourcePath);
if (!resourceLink.IsValid())
{
return(null);
}
return(resourceLink);
}
/// <summary>
/// Tries to find an svg icon in the embedded resources of the assembly
/// where the icon enum is located.
/// </summary>
/// <param name="collectionInfo">Information about the icon collection.</param>
/// <param name="fileInfo">Information about the icon file.</param>
private AssemblyResourceLink TryFindPngIcon(IconCollectionInfo collectionInfo, IconFileInfo fileInfo)
{
string resourcePath = string.Empty;
AssemblyResourceLink resourceLink = null;
int actIconsize = collectionInfo.IconSideWidthPixel;
do
{
resourcePath =
$"{collectionInfo.IconAssemblyDefaultNamespace}.Assets.Icons.{collectionInfo.IconEnumType.Name}.{fileInfo.ImageName}_{actIconsize}x{actIconsize}.png";
resourceLink = new AssemblyResourceLink(
collectionInfo.IconAssembly,
resourcePath);
if (!resourceLink.IsValid())
{
resourcePath = string.Empty;
resourceLink = null;
bool found = false;
for (int loop = 0; loop < PNG_ICON_SIZES.Length; loop++)
{
if (PNG_ICON_SIZES[loop] < actIconsize)
{
actIconsize = PNG_ICON_SIZES[loop];
found = true;
break;
}
}
if (!found)
{
actIconsize = -1;
}
}
}while ((resourceLink == null) && (actIconsize > 0));
return(resourceLink);
}
/// <summary>
/// Gets the WPF bitmap image.
/// </summary>
internal System.Windows.Media.Imaging.BitmapImage GetWpfBitmapImage(IconCollectionInfo collectionInfo, IconFileInfo fileInfo)
{
string iconFileKey = GetIconFileKey(collectionInfo, fileInfo);
// Load the ImageSource (me may have cached it before
System.Windows.Media.Imaging.BitmapImage result = null;
if (!m_wpfBitmapImages.TryGetValue(iconFileKey, out result))
{
// Try to load the icon from png file
var pngIconLink = TryFindPngIcon(collectionInfo, fileInfo);
if (pngIconLink != null)
{
using (Stream inStream = pngIconLink.OpenRead())
{
result = new System.Windows.Media.Imaging.BitmapImage();
result.BeginInit();
result.StreamSource = inStream;
result.EndInit();
result.Freeze();
}
}
m_wpfBitmapImages.Add(iconFileKey, result);
}
return(result);
}