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Thread: Keep aspect ratio of Image during selection (ALT key)

  1. #1
    IV Newbie
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    Feb 2017
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    Default Keep aspect ratio of Image during selection (ALT key)

    When I want to crop my photos, I select part of the image and use Crop selection (Cut out) from Edit menu. I usually try to select part with the same aspect ratio as original image.
    It would be best if there will be option to keep aspect ratio of original image during selection. For example when I press ALT key during resize of the selection.
    Thanks

  2. #2
    Moderator Enterprise User Bhikkhu Pesala's Avatar
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    Default

    The Control key already does that.

    First use Ctrl A to select all, then drag the edge of the selection while holding down Ctrl. Use right mouse button or the cursor keys to reposition the selection.

    If you hold down Ctrl while first making a selection, it will have a square aspect ratio.

  3. #3
    IV Newbie
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    Aug 2016
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    IrfanView 4.44
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    64-bit Win 7 Ultimate/Enterprise SP1
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    Default

    From the manual:


    Available selection rectangle shortcuts in IrfanView:



    Left button click/hold/move Draw selection

    CTRL + Left button click/hold/move Draw proportional selection with the ratio from "Create Custom selection" dialog

    ALT + Left button click/hold/move Draw proportional selection with the inverted ratio from "Create Custom selection" dialog

    Left button click Zoom into selection

    CTRL + Left button click Clear selection

    Right button click/hold/move Move selection

    Arrows Move selection (if no scrollbars visible)

    SHIFT + arrows Move selection

    CTRL + arrows Proportional resize of the selection

    ALT + arrows Change width/height of the selection
    And in the "Create Custom selection" dialog you have "Actual ratio (from image)"...

    Can you add 1+1?

    I tried, it's easy even if I create the custom selection with the defaults it suggests and then I drag it around and resize with Ctrl+left mouse button.

    Edit: answered at the same time as @Bhikkhu Pesala

  4. #4
    IV Newbie
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    Quote Originally Posted by Bhikkhu Pesala View Post
    The Control key already does that.

    First use Ctrl A to select all, then drag the edge of the selection while holding down Ctrl. Use right mouse button or the cursor keys to reposition the selection.

    If you hold down Ctrl while first making a selection, it will have a square aspect ratio.
    Good. Thank You

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