[PATCH] BUG 198888 & BUG 198890 about icon and text on plasma tooltip

[潘卫平]

Hi, everyone

BUG 198888 plasma applet tasks doesn't have an icon on tooltip, because we don't set an icon in TaskGroupItem updateTooltip function.  
Apply  kdebase-plasma-tasks-groupicon.patch to kdebase/workspace/plasma/applets/tasks/ can fix this bug.

BUG 198890 The positions of icon and text on plasma tooltip aren't consistent when grouping or not, because the plasma tooltip only has a QGridLayout. When you enable kwin taskbar thumbnail effect, it cann't work finefor previews, icon and text.

So I add previews into a QHBoxLayout, add icon and text into another QHBoxLayout, and set the stretch factor of text is 1, and and both QHBoxLayouts into a QVBoxLayout. These make the items on tooltip looks consistent.
kdelibs-tooltip-alignment.patch should be applied to kdelibs/plasma/.

Best regards

pwp

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