[QGIS-Developer] SVG toolbar icons suddenly appearing in black

[Raymond Nijssen]

Thank you all! Plenty workarounds for now. And I can also just wait for 
them to upgrade to a new 3.16.x or higher.

Raymond


On 24-09-2021 08:31, Matthias Kuhn wrote:
> Hi Raymond,
> 
> There has been an issue in Qt, where it was very picky with the 
> <style> tag in the svg [1]
> 
> This is solved in newer Qt versions (and newer QGIS for Windows builds) 
> but is still present in the early QGIS 3.16 builds based on older Qt 
> versions.
> 
> The quick hack is to replace the <style> tag with <style 
> type="text/css"> in the svg.
> Or upgrade to the latest QGIS version.
> 
> Cheers
> Matthias
> 
> https://bugreports.qt.io/browse/QTBUG-58326?focusedCommentId=344465&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-344465 
> <https://bugreports.qt.io/browse/QTBUG-58326?focusedCommentId=344465&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-344465>
> 
> On Fri, Sep 24, 2021 at 4:26 AM Nyall Dawson <nyall.dawson at gmail.com 
> <mailto:nyall.dawson at gmail.com>> wrote:
> 
>     On Thu, 23 Sept 2021 at 19:26, Raymond Nijssen
>     <r.nijssen at terglobo.nl <mailto:r.nijssen at terglobo.nl>> wrote:
>      >
>      > Hi devs!
>      >
>      > The dark blue icons on my plugin toolbar buttons are black for
>     some of
>      > my customers (on Windows). One of them mentioned that they turned
>     black
>      > after a QGIS update. On my Linux system they are still blue. I
>     guess it
>      > has to do with Qt.
> 
>     Hi Raymond,
> 
>     I've seen this in the past. Seems that Qt on windows is more sensitive
>     to SVG structure vs other platforms! In the past I've had luck by
>     optimising the svg with https://jakearchibald.github.io/svgomg/
>     <https://jakearchibald.github.io/svgomg/>  ,
>     which seems to make Qt happier... (Turn off "Round/rewrite numbers"
>     option though, cos that makes Qt LESS happy!)
> 
>     Nyall
> 
> 
>      >
>      >
>      >
>      > Here's the content of the svg file:
>      >
>      > <svg xmlns="http://www.w3.org/2000/svg
>     <http://www.w3.org/2000/svg>" viewBox="0 0 32 32">
>      >    <defs>
>      >      <style>
>      >        .a {
>      >          fill: #1b3d6e;
>      >        }
>      >      </style>
>      >    </defs>
>      >    <path class="a"
>      >
>     d="M15.52,6.54a7.29,7.29,0,0,0-1.77,7.38l-9.9,9.9-.34,4.33,5.94-.6v-2.8h2.8V22h2.8l3.37-3.36a7.26,7.26,0,1,0-2.9-12Zm5.37,2.1a2,2,0,1,1,0,2.81A2,2,0,0,1,20.89,8.64Z"/>
>      > </svg>
>      >
>      >
>      >
>      > And here's how I make the buttons:
>      >
>      > icon_fn = os.path.join(self.plugin_dir, 'img',
>     'icon_configuration.svg')
>      > icon = QIcon(icon_fn)
>      > action = QAction(icon, 'Configure', self.iface.mainWindow())
>      > self.toolbar.addAction(action)
>      >
>      >
>      >
>      >
>      > Hope anyone can clarify. The svg files were made by a designer, I
>     guess
>      > in some Adobe application. Hope I don't need adjusting them.
>      >
>      > Kind regards,
>      > Raymond
>      >
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