Review Request 119866: Thumbnails in Klipper

[Sebastian Kügler]

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https://git.reviewboard.kde.org/r/119866/
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Review request for Plasma.


Repository: plasma-workspace


Description
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This patch paints previews of copied images, instead of displaying the urls in plain text.

The display is limited to 4 images right now. The painting of the delegates is in line with the recommendations from the HIG at https://techbase.kde.org/Projects/Usability/HIG/Layout/Image

It has a few rough edges:
- not all images get thumbnails -- need to investigate why
- vertical alignment throughout the list is quite bad, this is the case already, I will fix that separately
- I want to add an indicator that it's more than 4 files (if applicable), working on that still
- When no preview is loaded, it should show an icon, almost done, with some fixes

I'd like some feedback on the code, so that with the remaining issues fixed, it can get in.


Diffs
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  applets/clipboard/contents/ui/ClipboardItemDelegate.qml 8eecb80cff1b5535b43242fe114fdaeae5ad510a 
  applets/clipboard/contents/ui/clipboard.qml ac784d2a46961083aad24eb142b9befa74ec61bd 
  klipper/CMakeLists.txt 660b0d174f9d41eec095d83d640111d1c340fb17 
  klipper/clipboardjob.cpp d84d01471440eed670c459e775867eda25fdbc58 
  klipper/historyurlitem.cpp fb2a766b39abe2040555ee694c55337481003bf9 
  klipper/org.kde.plasma.clipboard.operations 813aafa96440304b918ef06c3863bd7c4527d62a 

Diff: https://git.reviewboard.kde.org/r/119866/diff/


Testing
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Copied images and files in Dolphin, see them showing up in Klipper. Made sure that the previews are only loaded when needed, so no additional memory taken when the systray / klipper popup is not open.


File Attachments
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Before
  https://git.reviewboard.kde.org/media/uploaded/files/2014/08/20/ebdde483-136e-44da-8735-f98ba88485a9__klipper-before.png
Klipper with thumbnails
  https://git.reviewboard.kde.org/media/uploaded/files/2014/08/20/65749cc3-3fed-4c9b-9a28-b9791b8e93d8__klipper-thumbnails.png


Thanks,

Sebastian Kügler

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