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pierrotsc
USA
497 Posts |
 Posted - Aug 06 2019 : 13:55:17
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If i maximize my application and i want to have my image to keep the same magnification, how would i do that ? The imageenview gets a lot bigger.
thanks |
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xequte
38182 Posts |
Posted - Aug 07 2019 : 03:08:45
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Hi
The magnification (Zoom property) of ImageEnView does not change by default, perhaps you have set one of the auto-zooming properties such as AutoShrink or AutoStretch.
Nigel
Xequte Software
www.imageen.com
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pierrotsc
USA
497 Posts |
Posted - Aug 07 2019 : 08:36:04
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| Indeed, it does not change. let me rephrase. If i have my image that fills the screen right now and I maximize, it will not fill the screen anymore. That means if i had a magnification of x, could i get the same x magnification when i maximize or minimize ? Am i making sense ? |
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xequte
38182 Posts |
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pierrotsc
USA
497 Posts |
Posted - Aug 07 2019 : 15:42:23
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| Let me try one more time :) if i have an image that has a 30 % zoom on an imageenview window, it takes up to 30% of the space. now if i maximize, the image does not adapt to fill the new space at 30%. it will look like more 10 or 15 %. Not sure if am am still making sense. it looks like i may hvae to use the onviewchange event or something like that. |
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xequte
38182 Posts |
Posted - Aug 07 2019 : 18:32:21
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Hi
Then VisibleBitmapRect should work (if image is larger than view), or just maths:
Zoom := Previous_Zoom * New_Size / Old_Size;
Nigel
Xequte Software
www.imageen.com
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pierrotsc
USA
497 Posts |
Posted - Aug 07 2019 : 20:16:31
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| ok, should i put that in the imagenview event or the form resize event ? |
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xequte
38182 Posts |
Posted - Aug 07 2019 : 22:51:17
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Hi
TImageEnView.OnResize would be best.
Nigel
Xequte Software
www.imageen.com
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pierrotsc
USA
497 Posts |
Posted - Aug 08 2019 : 11:28:26
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The VisibleBitmapRec does not vibe me what i want so i need to use the math. the only thing is on how would i know the current zoom value before i maximize or minimize the form ?
To tell you the truth i just need to know the old zoom value and re apply it to the maximized or minimized form. I assume that would do it. |
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xequte
38182 Posts |
Posted - Aug 08 2019 : 22:08:00
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Hi
Controls have no "Before Sizing" event, so you will need to maintain a private variable to store it (e.g. setting it at the end of the ImageEnView ViewChange event.
Nigel
Xequte Software
www.imageen.com
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pierrotsc
USA
497 Posts |
Posted - Aug 09 2019 : 08:50:25
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| ok...will try that. Thank you |
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