Evolving QIcon and theming: Difference between revisions

Latest revision as of 15:11, 30 November 2023

QIcon::fromTheme() Suffers from XDG legacy. Missing many icons (last updated 2006).
Fonts are used on both Android (Google Fonts) and Apple (SF Symbols - SF ~= "San Fransisco" font)
Today you can have variations such as "fill", "rounded", "outline", "sharp".
Should they be treated as themes? Maybe not? You might want non-filled and filled in the same application.

How does that fit into the API to get QPixmaps? (e.g. I want "filled" icons):

QPixmap QIcon::pixmap(const QSize &sz, QIcon::Mode mode = Normal, QIcon::State state = Off) const

Some platforms can have palette on icons for richer color set (Google Fonts/Material)
Current tech preview implementation have some Opt-in:
```
qgetenv("QT_ENABLE_EXPERIMENTAL_ICON_ENGINES")
```

Can we provide a default set of icons (also for those platforms who don't provide that, e.g. embedded)
Can the naming schemes be unified across platforms (e.g. apple might use a different logical name than on Android)? => Qt can add enum (typesafe) to describe what icon you want (like QStyle::standardPixmap() ) => Don't forget that applications wants to also use their custom icons (possible today with ini files and string based lookup)
Qt 6.7 will have a tech preview of the new icon engine implementation

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 ==Session Summary==
 ==Session Owners==
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 ==Notes==
+* QIcon::fromTheme() Suffers from XDG legacy. Missing many icons (last updated 2006).
+* Fonts are used on both Android (Google Fonts) and Apple (SF Symbols - SF ~= "San Fransisco" font)
+* Today you can have variations such as "fill", "rounded", "outline", "sharp".
+* Should they be treated as themes? Maybe not? You might want non-filled and filled in the same application.
+* How does that fit into the API to get QPixmaps? (e.g. I want "filled" icons): <syntaxhighlight lang="c++">
+QPixmap QIcon::pixmap(const QSize &sz, QIcon::Mode mode = Normal, QIcon::State state = Off) const
+</syntaxhighlight>
+* Some platforms can have palette on icons for richer color set (Google Fonts/Material)
+* Current tech preview implementation have some Opt-in:<syntaxhighlight lang="c++">
+qgetenv("QT_ENABLE_EXPERIMENTAL_ICON_ENGINES")
+</syntaxhighlight>
+* Can we provide a default set of icons (also for those platforms who don't provide that, e.g. embedded)
+* Can the naming schemes be unified across platforms (e.g. apple might use a different logical name than on Android)? => Qt can add enum (typesafe) to describe what icon you want (like QStyle::standardPixmap() ) => Don't forget that applications wants to also use their custom icons (possible today with ini files and string based lookup)
+* Qt 6.7 will have a tech preview of the new icon engine implementation