Wer weiß? Sie möchten im Handumdrehen ein Bild mit einem anderen Bild als Wasserzeichen versehen, um auch große Stapel zu erstellen. Jede Art von bestehender Bibliothek oder Technik, die Sie kennen, wäre großartig.Beste Möglichkeit, ein Bild mit einem anderen Bild zu stempeln, um ein Wasserzeichen in ASP.NET zu erstellen?
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Antwort
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Ich hatte viel Glück mit ImageMagick. Es hat auch eine API for .NET.
3
hier meine ganzen Artikel: http://forums.asp.net/p/1323176/2634923.aspx
die SDK-Eingabeaufforderung verwenden und den aktiven Ordner in den Ordner, die unter dem Sourcecode enthält ... kompilieren Sie dann den Code
vbc.exe watermark.vb /t:exe /out:watermark.exe
dies wird mit Erstellen Sie eine EXE im Ordner .. Die EXE akzeptiert zwei Parameter: ex.
watermark.exe "c:\source folder" "c:\destination folder"
dies wird den übergeordneten Ordner und alle Unterordner durchlaufen. Alle gefundenen JPEGs werden mit dem im Code angegebenen Bild mit Wasserzeichen versehen und in den Zielordner kopiert. Das Originalbild bleibt unberührt.
// watermark.vb -
Imports System
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Drawing.Imaging
Imports System.IO
Namespace WatermarkManager
Class Watermark
Shared sourceDirectory As String = "", destinationDirectory As String = ""
Overloads Shared Sub Main(ByVal args() As String)
'See if an argument was passed from the command line
If args.Length = 2 Then
sourceDirectory = args(0)
destinationDirectory = args(1)
' make sure sourceFolder is legit
If Directory.Exists(sourceDirectory) = False
TerminateExe("Invalid source folder. Folder does not exist.")
Exit Sub
End If
' try and create destination folder
Try
Directory.CreateDirectory(destinationDirectory)
Catch
TerminateExe("Error creating destination folder. Invalid path cannot be created.")
Exit Sub
End Try
' start the magic
CreateHierarchy(sourceDirectory,destinationDirectory)
ElseIf args.Length = 1
If args(0) = "/?"
DisplayHelp()
Else
TerminateExe("expected: watermark.exe [source path] [destination path]")
End If
Exit Sub
Else
TerminateExe("expected: watermark.exe [source path] [destination path]")
Exit Sub
End If
TerminateExe()
End Sub
Shared Sub CreateHierarchy(ByVal sourceDirectory As String, ByVal destinationDirectory As String)
Dim tmpSourceDirectory As String = sourceDirectory
' copy directory hierarchy to destination folder
For Each Item As String In Directory.GetDirectories(sourceDirectory)
Directory.CreateDirectory(destinationDirectory + Item.SubString(Item.LastIndexOf("\")))
If hasSubDirectories(Item)
CreateSubDirectories(Item)
End If
Next
' reset destinationDirectory
destinationDirectory = tmpSourceDirectory
' now that folder structure is set up, let's iterate through files
For Each Item As String In Directory.GetDirectories(sourceDirectory)
SearchDirectory(Item)
Next
End Sub
Shared Function hasSubDirectories(ByVal path As String) As Boolean
Dim subdirs() As String = Directory.GetDirectories(path)
If subdirs.Length > 0
Return True
End If
Return False
End Function
Shared Sub CheckFiles(ByVal path As String)
For Each f As String In Directory.GetFiles(path)
If f.SubString(f.Length-3).ToLower = "jpg"
WatermarkImage(f)
End If
Next
End Sub
Shared Sub WatermarkImage(ByVal f As String)
Dim img As System.Drawing.Image = System.Drawing.Image.FromFile(f)
Dim graphic As Graphics
Dim indexedImage As New Bitmap(img)
graphic = Graphics.FromImage(indexedImage)
graphic.DrawImage(img, 0, 0, img.Width, img.Height)
img = indexedImage
graphic.SmoothingMode = SmoothingMode.AntiAlias
graphic.InterpolationMode = InterpolationMode.HighQualityBicubic
Dim x As Integer, y As Integer
Dim source As New Bitmap("c:\watermark.png")
Dim logo As New Bitmap(source, CInt(img.Width/3), CInt(img.Width/3))
source.Dispose()
x = img.Width - logo.Width
y = img.Height - logo.Height
graphic.DrawImage(logo, New Point(x,y))
logo.Dispose()
img.Save(destinationDirectory+f.SubString(f.LastIndexOf("\")), ImageFormat.Jpeg)
indexedImage.Dispose()
img.Dispose()
graphic.Dispose()
Console.WriteLine("successfully watermarked " + f.SubString(f.LastIndexOf("\")+1))
Console.WriteLine("saved to: " + vbCrLf + destinationDirectory + vbCrLf)
End Sub
Shared Sub SearchDirectory(ByVal path As String)
destinationDirectory = destinationDirectory + path.SubString(path.LastIndexOf("\"))
CheckFiles(path)
For Each Item As String In Directory.GetDirectories(path)
destinationDirectory += Item.SubString(Item.LastIndexOf("\"))
CheckFiles(Item)
If hasSubDirectories(Item)
destinationDirectory = destinationDirectory.SubString(0,destinationDirectory.LastIndexOf("\"))
SearchDirectory(Item)
destinationDirectory += Item.SubString(Item.LastIndexOf("\"))
End If
destinationDirectory = destinationDirectory.SubString(0,destinationDirectory.LastIndexOf("\"))
Next
destinationDirectory = destinationDirectory.SubString(0,destinationDirectory.LastIndexOf("\"))
End Sub
Shared Sub CreateSubDirectories(ByVal path As String)
destinationDirectory = destinationDirectory + path.SubString(path.LastIndexOf("\"))
For Each Item As String In Directory.GetDirectories(path)
destinationDirectory += Item.SubString(Item.LastIndexOf("\"))
Directory.CreateDirectory(destinationDirectory)
Console.WriteLine(vbCrlf + "created: " + vbCrlf + destinationDirectory)
If hasSubDirectories(Item)
destinationDirectory = destinationDirectory.SubString(0,destinationDirectory.LastIndexOf("\"))
CreateSubDirectories(Item)
destinationDirectory += Item.SubString(Item.LastIndexOf("\"))
End If
destinationDirectory = destinationDirectory.SubString(0,destinationDirectory.LastIndexOf("\"))
Next
destinationDirectory = destinationDirectory.SubString(0,destinationDirectory.LastIndexOf("\"))
End Sub
Shared Sub TerminateExe(ByVal Optional msg As String = "")
If msg ""
Console.WriteLine(vbCrLf + "AN ERROR HAS OCCURRED //" + vbCrLf + msg)
End If
Console.WriteLine(vbCrLf + "Press [enter] to close...")
'Console.Read()
End Sub
Shared Sub DisplayHelp()
Console.WriteLine("watermark.exe accepts two parameters:" + vbCrLf + " - [source folder]")
Console.WriteLine(" - [destination folder]")
Console.WriteLine("ex." + vbCrLf + "watermark.exe ""c:\web_projects\dclr source"" ""d:\new_dclr\copy1 dest""")
Console.WriteLine(vbCrLf + "Press [enter] to close...")
Console.Read()
End Sub
End Class
End Namespace
Ich wollte mit GDI Plus als gut, gute Arbeit empfehlen. –
Guter Artikel, zeigt das Hinzufügen von text- und bildbasierten Wasserzeichen. – Liam