Using Inkscape 1.2.2 (1:1.2.2+202212051550+b0a8486541), let's say I have this situation:
I have a "physical" page which is 100x100 mm; and then "actual" page represented by the sqare which is 70x70 mm - therefore, the two guidelines on the image indicate a "margin" of 15 mm.
Then, I have a circle (red) with 10 mm in diameter.
I would like to place this circle in the middle of the page horizontally, and in the middle of the "margin" vertically.
The first part - place this circle in the middle of the page horizontally - is easy: just select the circle, Align menu: choose Relative to: Page; then click "Center on vertical axis" button (hover over buttons for description).
The second part - place this circle in the middle of the "margin" vertically - is the one I have a problem with:
- If I could select the guides, together with the circle, I could have called e.g. "Distribute vertically with even spacing between top edges", and be done with it. The problem is - I cannot "select" the guides, even less two of them together, even less together with an object.
- On the other hand, I could draw a temporary object just to do this kind of vertical alignment/distribute and then delete the temporary object, but I hate drawing temporary objects just for alignment purposes and deleting them.
So is there a better way to center objects within "margins" (or between two guidelines)?