POWERSHELL：$ Image.DrawString左と右のパディング付きのセンタリング文字列

Question

イメージの縦方向の中央に描画文字列を描画しようとしていますが、このテキストの左右からどのようにパディングするのかわかりません。私は非常に大きな文字列を持っている場合、それは新しい行をしていない、画像に収まらない...

私は今、二PowerShellのコードを持っている：

$swp_curr_dir = split-path -parent $MyInvocation.MyCommand.Definition 
[void][reflection.assembly]::loadwithpartialname("system.windows.forms") 

Function AddTextToImage { 
    # Orignal code from http://www.ravichaganti.com/blog/?p=1012 
    [CmdletBinding()] 
    PARAM (
     [Parameter(Mandatory=$true)][String] $sourcePath, 
     [Parameter(Mandatory=$true)][String] $destPath, 
     [Parameter(Mandatory=$true)][String] $Title, 
     [Parameter()][String] $Description = $null 
    ) 

    Write-Verbose "Load System.Drawing" 
    [Reflection.Assembly]::LoadWithPartialName("System.Drawing") | Out-Null 

    Write-Verbose "Get the image from $sourcePath" 
    $srcImg = [System.Drawing.Image]::FromFile($sourcePath) 

    Write-Verbose "Create a bitmap as $destPath" 
    $outputIImg = new-object System.Drawing.Bitmap([int]($srcImg.width)),([int]($srcImg.height)) 

    Write-Verbose "Intialize Graphics" 
    $Image = [System.Drawing.Graphics]::FromImage($outputIImg) 
    $Image.SmoothingMode = "AntiAlias" 

    $Rectangle = New-Object Drawing.Rectangle 0, 0, $srcImg.Width, $srcImg.Height 
    $Image.DrawImage($srcImg, $Rectangle, 0, 0, $srcImg.Width, $srcImg.Height, ([Drawing.GraphicsUnit]::Pixel)) 

    Write-Verbose "Draw title: $Title" 
    $Font = new-object System.Drawing.Font("Bauhaus 93", 130, "Bold","Pixel") 

    #get font size 
    $font_size = [System.Windows.Forms.TextRenderer]::MeasureText($Title, $Font) 
    $font_size_width = $font_size.Width 
    $font_size_height = $font_size.Height 

    # calc text in middle 
    $text_in_middle_top_offset = ($srcImg.Height - $font_size_height)/2 
    $text_in_middle_left_offset = ($srcImg.Width - $font_size_width)/2 

    #styling font 
    $Brush = New-Object Drawing.SolidBrush([System.Drawing.Color]::FromArgb(255, 255, 255, 255)) 

    #lets draw font 
    $Image.DrawString($Title, $Font, $Brush, $text_in_middle_left_offset, $text_in_middle_top_offset) 

    Write-Host $text_in_middle_left_offset 



    Write-Verbose "Save and close the files" 
    $outputIImg.save($destPath, [System.Drawing.Imaging.ImageFormat]::jpeg) 
    $outputIImg.Dispose() 
    $srcImg.Dispose() 
} 

AddTextToImage -sourcePath ($swp_curr_dir + "\image.jpg") -destPath ($swp_curr_dir + "\output.jpg") -Title "Some long long long long long long long long long long long long string here" 

cmd /c pause 

Answer 1

を私は少しあなたの例を変更しました：

[void][reflection.assembly]::loadwithpartialname("system.windows.forms") 

Function AddTextToImage { 
    # Orignal code from http://www.ravichaganti.com/blog/?p=1012 
    [CmdletBinding()] 
    PARAM (
     [Parameter(Mandatory=$true)][String] $sourcePath, 
     [Parameter(Mandatory=$true)][String] $destPath, 
     [Parameter(Mandatory=$true)][String] $Title, 
     [Parameter()][String] $Description = $null 
    ) 

    Write-Verbose "Load System.Drawing" 
    [Reflection.Assembly]::LoadWithPartialName("System.Drawing") | Out-Null 

    Write-Verbose "Get the image from $sourcePath" 
    $srcImg = [System.Drawing.Image]::FromFile($sourcePath) 

    Write-Verbose "Create a bitmap as $destPath" 
    $outputIImg = new-object System.Drawing.Bitmap([int]($srcImg.width)),([int]($srcImg.height)) 

    Write-Verbose "Intialize Graphics" 
    $Image = [System.Drawing.Graphics]::FromImage($outputIImg) 
    $Image.SmoothingMode = "AntiAlias" 

    $Rectangle = New-Object Drawing.Rectangle 0, 0, $srcImg.Width, $srcImg.Height 
    $Image.DrawImage($srcImg, $Rectangle, 0, 0, $srcImg.Width, $srcImg.Height, ([Drawing.GraphicsUnit]::Pixel)) 

    Write-Verbose "Draw title: $Title" 
    $Font = new-object System.Drawing.Font("Bauhaus 93", 130, "Bold","Pixel") 

    #get font size 
    $font_size = [System.Windows.Forms.TextRenderer]::MeasureText($Title, $Font) 
    $font_size_width = $font_size.Width 
    $font_size_height = $font_size.Height 

    $rect = [System.Drawing.RectangleF]::FromLTRB(0, 0, $srcImg.Width, $srcImg.Height) 
    $format = [System.Drawing.StringFormat]::GenericDefault 
    $format.Alignment = [System.Drawing.StringAlignment]::Center 
    $format.LineAlignment = [System.Drawing.StringAlignment]::Center 

    #styling font 
    $Brush = New-Object Drawing.SolidBrush([System.Drawing.Color]::FromArgb(255, 255, 255, 255)) 

    #lets draw font 
    $Image.DrawString($Title, $Font, $Brush, $rect, $format) 

    Write-Verbose "Save and close the files" 
    $outputIImg.save($destPath, [System.Drawing.Imaging.ImageFormat]::jpeg) 
    $outputIImg.Dispose() 
    $srcImg.Dispose() 
} 

AddTextToImage -sourcePath D:\Temp\Koala.jpg -destPath D:\Temp\Koala2.jpg -Title "Some long long long long long long long long long long long long string here" 

鍵は、異なる引数を使用してDrawStringを呼び出すことです。