Leadtools.Forms.DocumentReaders Namespace > DocumentImageManager Class : GetThumbnail Method |
public RasterImage GetThumbnail( DocumentReaderPage page, int thumbnailWidth, int thumbnailHeight )
'Declaration Public Function GetThumbnail( _ ByVal page As DocumentReaderPage, _ ByVal thumbnailWidth As Integer, _ ByVal thumbnailHeight As Integer _ ) As RasterImage
'Usage Dim instance As DocumentImageManager Dim page As DocumentReaderPage Dim thumbnailWidth As Integer Dim thumbnailHeight As Integer Dim value As RasterImage value = instance.GetThumbnail(page, thumbnailWidth, thumbnailHeight)
public RasterImage GetThumbnail( DocumentReaderPage page, int thumbnailWidth, int thumbnailHeight )
function Leadtools.Forms.DocumentReaders.DocumentImageManager.GetThumbnail( page , thumbnailWidth , thumbnailHeight )
public: RasterImage^ GetThumbnail( DocumentReaderPage^ page, int thumbnailWidth, int thumbnailHeight )
If the page width and height is less than thumbnailWidth and thumbnailHeight, then this method returns a Leadtools.RasterImage in the original size.
If the page width or height is greater than thumbnailWidth and thumbnailHeight, then this method will return the biggest thumbnail it can fit into the dimensions specified by thumbnailWidth and thumbnailHeight, keeping the original image aspect ratio.
The result image will always have 24 bits per pixel and a resolution of 96 by 96 regardless of the value of DpiX and DpiY and will never return a thumbnail bigger than the original page size in pixels.
To get a render of the full size of any page in a PDF document, use GetPageImage.
Public Sub DocumentImageManagerGetThumbnailExample(ByVal reader As DocumentReader, ByVal _ imageList As RasterImageList) ' Loop through all the pages For Each page As DocumentReaderPage In reader.Pages Dim thumbnailImage As RasterImage = reader.ImageManager.GetThumbnail(page, 128, 128) Dim item As New RasterImageListItem(thumbnailImage, 1, "Page " + page.PageNumber.ToString()) imageList.Items.Add(item) Next End Sub
public void DocumentImageManagerGetThumbnailExample(DocumentReader reader, RasterImageList imageList) { // Loop through all the pages foreach(DocumentReaderPage page in reader.Pages) { RasterImage thumbnailImage = reader.ImageManager.GetThumbnail(page, 128, 128); RasterImageListItem item = new RasterImageListItem(thumbnailImage, 1, "Page " + page.PageNumber.ToString()); imageList.Items.Add(item); } }
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2