stretch and maintainaspectratio of tppimage

rbuser

Is it possible to show an image that if the image size is smaller than the
frame of tppimage, then show the image original size without enlarge, but if
the image is larger than the frame of tppimage, that shrink proportionally
to the frame of tppimage.
Is it possible?

nicocizik

Hi Kei,

If you set the Stretch and MaintainAspectRatio to True, does this give you
the desired effect?

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rbuser

No! If the image is smaller than the tppimage frame and the stretch and
maintainaspectration is true, then it will enlarge proportionally.
Any other method?

nicocizik

Hi Kei,

Unfortunately ReportBuilder does not have any built in features that will do
this for you. You will need to compare the size of the image to the size of
the TppImage control before hand and set the Stretch property accordingly.

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rbuser

How to do it?
For Delphi, the TPicture.height specify the height in pixels. how to compare
with the size fo tmmImage control?
How can I know (and change) in code that the unit of width and height of
TppImage Control?
What unit should be used to compare with TPicture.height and TPicture.width?
Screen pixels or printer pixels?

Thx!

nicocizik

Kei,

There are many conversion routines located in the ppUtils.pas file that can
be used to convert screen pixels and printer pixels to microns and vice
versa. Check out the ppFromMMThousandths and ppToMMThousandths methods.

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