ConvertTo-Icon.ps1
|
function ConvertTo-Icon { <# .Synopsis Converts image to icons .Description Converts an image to an icon .Example ConvertTo-Icon -File .\Logo.png -OutputFile .\Favicon.ico #> [CmdletBinding()] param( # The file [Parameter(Mandatory=$true, Position=0,ValueFromPipelineByPropertyName=$true)] [Alias('Fullname')] [string]$File, # If set, will output bytes instead of creating a file [switch]$InMemory, # If provided, will output the icon to a location [Parameter(Position=1, ValueFromPipelineByPropertyName=$true)] [string]$OutputFile ) begin { Add-Type -AssemblyName System.Windows.Forms, System.Drawing } process { #region Load Icon $resolvedFile = $ExecutionContext.SessionState.Path.GetResolvedPSPathFromPSPath($file) if (-not $resolvedFile) { return } $loadedImage = [Drawing.Image]::FromFile($resolvedFile) $intPtr = New-Object IntPtr $thumbnail = $loadedImage.GetThumbnailImage(72, 72, $null, $intPtr) $bitmap = New-Object Drawing.Bitmap $thumbnail $bitmap.SetResolution(72, 72); $icon = [System.Drawing.Icon]::FromHandle($bitmap.GetHicon()); #endregion Load Icon #region Save Icon if ($InMemory) { $memStream = New-Object IO.MemoryStream $icon.Save($memStream) $memStream.Seek(0,0) $bytes = New-Object Byte[] $memStream.Length $memStream.Read($bytes, 0, $memStream.Length) $bytes } elseif ($OutputFile) { $resolvedOutputFile = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($outputFile) $fileStream = [IO.File]::Create("$resolvedOutputFile") $icon.Save($fileStream) $fileStream.Close() } #endregion Save Icon #region Cleanup $icon.Dispose() $bitmap.Dispose() #endregion Cleanup } } |