DreamScape

Repeated Images

Sometimes it happens to repeat many times the same image inside a PDF file. This always happens if you use a background image (like powerpint slides or tax forms) or with your company logo.

PDFReport is so smart to permit the developer to import an image once and to reuse it in various sizes and pages throughout the entire document.

All you need to to is to import once the image and then to draw that image as many times as you want. The image will be stored only once inside the PDF document, so it will be very small.

As no other PDF engine or PDF Printer driver offers this solution, this means that you can make big catalogs with backgrounds and Hi Res logos or scanned tax forms inside your PDF files KEPPING THEM VERY SMALL. For example, the avarage space saving is normally 12:1 if you use the same background on all 12 pages of a PDF file. In this case for example a 6 megabyte file could be reduced to a 0.5 Megabyte file!

Private Sub Command12_Click()
  Dim PDFRPT As New PDFDocument
  Dim BackgroundImageID As Integer
  PDFRPT.NewPDF "This is my first PDF"
  PDFRPT.SetFillColor 255, 255, 255
  BackgroundImageID = PDFRPT.ImportImageAsResource(App.Path & "\audiavus07s.jpg", 99)
  PDFRPT.DrawImageResource 0, 0, 210, 297, BackgroundImageID
  PDFRPT.TextOut "Hello World!", 10, 10
  PDFRPT.AddPage
  PDFRPT.SetFillColor 255, 0, 255 ' another color for text...
  PDFRPT.DrawImageResource 0, 0, 210, 297, BackgroundImageID
  PDFRPT.TextOut "Hello World!", 10, 10
  PDFRPT.AddPage
  PDFRPT.DrawImageResource 0, 0, 210, 297, BackgroundImageID
  PDFRPT.SetFillColor 255, 255, 0 ' another color for text...
  PDFRPT.TextOut "Hello World!", 10, 10
  PDFRPT.SavePDF "c:\provaocx.pdf"
End Sub

This is the result:

If we use the normal ImportImage function, the file is identical in the aspect, but is nearly 3 times larger!

This is because we have imported 3 times (for 3 pages) the same image!

(By the way: the images' sizes were: 141 KB the optimized version, 404 Kb the NON optimized version)



		Introduction A very simple PDF file Changing Font Type and Size Changing Paragraph Alignment (Left, Right, Center, Full Justification) Changing Font Fill and Outline properties How to obtain Wordwrapped Text Unit of Measures Lines and Rectangles Line and Fill Colors Adding Pages Outlines Floating Annotations Images (BMP, JPG, WMF, ICO) Hyperlinks to other pages of the same file Hyperlinks to another PDF file Hyperlinks to a WEB page Importing TrueType Fonts Bar Code Fonts Optimizing repeated images (Logos, Backgrounds) Working on previous pages Changing PDF porperties (Author, Subject) Send Back PDF content from ASP pages without writing PDF files Obtaining a string's width/height given the font name and font height Runtime Licenses redistribution		Repeated Images Sometimes it happens to repeat many times the same image inside a PDF file. This always happens if you use a background image (like powerpint slides or tax forms) or with your company logo. PDFReport is so smart to permit the developer to import an image once and to reuse it in various sizes and pages throughout the entire document. All you need to to is to import once the image and then to draw that image as many times as you want. The image will be stored only once inside the PDF document, so it will be very small. As no other PDF engine or PDF Printer driver offers this solution, this means that you can make big catalogs with backgrounds and Hi Res logos or scanned tax forms inside your PDF files KEPPING THEM VERY SMALL. For example, the avarage space saving is normally 12:1 if you use the same background on all 12 pages of a PDF file. In this case for example a 6 megabyte file could be reduced to a 0.5 Megabyte file! Private Sub Command12_Click() Dim PDFRPT As New PDFDocument Dim BackgroundImageID As Integer PDFRPT.NewPDF "This is my first PDF" PDFRPT.SetFillColor 255, 255, 255 BackgroundImageID = PDFRPT.ImportImageAsResource(App.Path & "\audiavus07s.jpg", 99) PDFRPT.DrawImageResource 0, 0, 210, 297, BackgroundImageID PDFRPT.TextOut "Hello World!", 10, 10 PDFRPT.AddPage PDFRPT.SetFillColor 255, 0, 255 ' another color for text... PDFRPT.DrawImageResource 0, 0, 210, 297, BackgroundImageID PDFRPT.TextOut "Hello World!", 10, 10 PDFRPT.AddPage PDFRPT.DrawImageResource 0, 0, 210, 297, BackgroundImageID PDFRPT.SetFillColor 255, 255, 0 ' another color for text... PDFRPT.TextOut "Hello World!", 10, 10 PDFRPT.SavePDF "c:\provaocx.pdf" End Sub This is the result: If we use the normal ImportImage function, the file is identical in the aspect, but is nearly 3 times larger! This is because we have imported 3 times (for 3 pages) the same image! (By the way: the images' sizes were: 141 KB the optimized version, 404 Kb the NON optimized version)