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Slow Rendering Rich Text

edbuescheredbuescher
in General
I have a ppDBRichText control to render some text. This works fine until I try to modify the text with a GetRichText event, which slows down the rendering to over a second per page, and I have 50+ pages. I am simply "bolding" some characters inside the text string. I assume the issue is RB trying to render the formatting. If I only mess with the text by modifying it, without any richtext controls, RB works fine, but when I add the logic to "bold" some characters, it really slows down.

My code is something like this:
Text:='{\rtf1\ansi{\b '+Bold Text+'}}'; - this works fine other than being slow

Is there a way to speed this up?

Comments

  • nicociziknicocizik
    Hi Eric,

    I sent an email to you with an accompanying example and a request for more information last Tuesday. I will post a solution here once we are able to find the issue and solve it.
    Best Regards,

    Nico Cizik
    Digital Metaphors
    http://www.digital-metaphors.com
  • edbuescheredbuescher
    I see the file you sent and will play with it. Thanks.
    I'll get back to you when I know something
  • edbuescheredbuescher
    I see the file you sent and will play with it. Thanks.
    I'll get back to you when I know something
  • edbuescheredbuescher
    It took me quite some time to figure this one out. Turns out it was not the "Rich Text" stuff slowing things down, but the size of the TppDBRichText component. I display 1-4 lines in this box for every record, and had it sized in the report template for around 3 lines. If the "stretch" property was blank (not checked) then the report rendered fast, but if it was checked, then it was very slow, about a second per page and my report is set for 2 passes. When I resized the TppDBRichText box to a single line, then the report generated fast regardless of the "stretch" property value.

    So maybe this is documented somewhere, and I have either missed it or long forgotten it, but when a report component has "Stretch" checked and it needs to enlarge, it works fast, but not if it needs to shrink, at least in my application with this TppDBRichText component.

    I verified this also with your sample program by leaving the Notes Rich Text box the same size, but limited the Notes text to 50 characters. The report displayed the 1st page quickly, but in the status box on the bottom left, you could see it calculating pages 1 by 1 and fairly slowly.
  • edbuescheredbuescher
    Today when I was testing again, the report runs slow whether the ppDBRichText expands or contracts when Stretch is checked. Sorry for all the confusion.
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