[okular] [Bug 111254] Desire on-screen ruler functionality

[jack_sprat]

https://bugs.kde.org/show_bug.cgi?id=111254

--- Comment #6 from jack_sprat <home1 at spliced.me.uk> ---
(with correction)
Hi,
I'm voting in support of Daniel's final proposal: the linear measurement tool.
Interpreting PDF's of maps, graphs, plans &c. often benefits from being able to
extract scaled dimensions.
I propose that such a click-and-drag tool's context menu would allow it to be
'calibrated' with some training values (from the graph or map axes, or plan
scale bars, for instance) - and then remain true as the PDF is zoomed in/out.
The context menu would allow user to select linear/area/angular dimension
options.
A further context menu feature would allow the measured value to be inserted as
an annotation.

C'mon, it would be a beauty, don't you think?

 As an example, look at the 'measure line/area/bearing/angle' tool in QGIS

 thanks for listening - best wishes - JS

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