Rank: Advanced Member
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Joined: 4/26/2012(UTC)
Posts: 36
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Hi, I'm trying to save my (layered) canvas to an image and then use the resulting image as the source for an image elsewhere on my page (e.g. <img src="my_canvas_image.png" alt="some_text"/>. I have used the remote scripting method to save the canvas to an image like so: Code:Dim bmp As Aurigma.GraphicsMill.Bitmap = _canvasViewer.Canvas.RenderWorkspace(dpi, Aurigma.GraphicsMill.ColorSpace.Rgb)
bmp.Transforms.Resize(width, height)
bmp.Save("my_canvas_image.png", New Aurigma.GraphicsMill.Codecs.PngEncoderOptions(True))
however the javascript code $('#my_image')attr('src', 'my_canvas_image.png'); that I execute after the invokeRemoteMethod on the client executes before the image is generated so it never shows. To get around this timing issue I tried making an ajax call and passing in the serialized canvas data to a PageMethod and populating it with the serialized data, but I don't know if it's possible. I tried using various things based on the following approach but I kept getting errors. Is this possible? Code:<WebMethod()> _
Public Shared Function MyMethod(ByVal serializedData As String) As String
Dim fileName As String = "random_image_name.png"
Dim cv As New Aurigma.GraphicsMill.AjaxControls.CanvasViewer
cv...etc ' try to recreate canvas using serializedData
Dim bmp As Aurigma.GraphicsMill.Bitmap = cv.Canvas.RenderWorkspace....etc
return fileName ' use client side
End Function
Thanks Edited by user Thursday, September 6, 2012 7:15:04 AM(UTC)
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Rank: Advanced Member
Groups: Member
Joined: 5/29/2010(UTC)
Posts: 1,310
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Was thanked: 111 time(s) in 111 post(s)
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Hello Norman, Unfortunately, there is no way to achieve it. Saving image takes some time. Therefore using remote script method is unsuitable in the case you described. I would like to recommend you to use post back. It will also allow to update an image you in the <img /> tag. |
Best regards,
Dmitry Obukhov
Technical Support. Aurigma, Inc.
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