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Sometimes it is funny how people do want to have preview in other application than in filemanager.

The filemanager itself has idea to have preview like thumbnails. But they just are too small. The sidepanel does not help either.

The thumbnails and sidepanel fits to needs well when you have thumbnails turned off and you see the sidepanel preview. Or you have lots of same filetype and you want to see what is what by enabling the thumbnails.

Neither of those allows to see files itself what you are about to open. Like if you have 3-5 versions of image, it is much easier to open a gwenview to go trough all of them instead using postmark sized preview.

Resizing the dolphin sidepanel is not answer at all. That action is something what is bad for usability.

The preview idea is just to be so fast and easy that you can really have a PREview before you open the file.

Apple did it great way in Finder, just press shortcut (Space) to get preview. It does not get opened in other application (or widget) but shown in the finder itself.

Same thing could be applied to this idea as well. But the mainpoint is to have a single click to open preview, go trough and then close it. Space (open), arrowkeys (select, deselect, and browse files left/right) and Esc (close) could do the same for those who just want keyboard control.

When the preview is big enough (the mockup) and fast enough, it is usefull. If demands other applications, it is no more preview but other application itself already.

Here's what i take to bet a better option. There's a Facebook picture plugin for Chrome called Facebook Photo Zoom (https://chrome.google.com/extensions/de ... pipi?hl=en) that allows images to be zoomed to a set size just when you mouseover the thumbnails. This gives immediate previewing by just a mouseover. Ideally when one need to also press an activation key (e.g. the "Windows" meta-key) to have the previews appear on mouseover. This would allow one to do away with the relatively elaborate previewing and selection scenario you mocked up.

It's a wonderful idea

molecule-eye wrote: This would allow one to do away with the relatively elaborate previewing and selection scenario you mocked up.

But doesn't that demand that you unpress the key to get the preview hided again so you can preview file what is under the preview? That was the idea why I added the arrows.

That would cause you need to hover mouse over file and then press preview key. Then unpress, move mouse and press again. More like two button combination working instead just with mouse.

Idea altough is nice. But it should always be positioned to middle of the Dolphin window and the file icon area.

Just hovering to get a preview is as well a horrible idea. Many really hates the function when you accidentally hover a link in webpage and it brings a preview bubble and you need to shake mouse to get it away and avoid hovering links.

Marked as submitted: https://bugs.kde.org/show_bug.cgi?id=247322

Well, it's not about integration in dolphin, but at least a small and simple image previewer with with overlay controls.
Look at http://kde-apps.org/content/show.php/ShowImage?content=143977&PHPSESSID=4061c434fe75baa744a3ce4b05553e12

There is as well the Limoo http://kde-apps.org/content/show.php/Li ... ent=149806

It nearly what this idea is about, but it takes whole screen instead just the Dolphin window. So it works more like a Picasa.

And even that controls of Limoo is not so easy to use, it is promising for many.