Today I began building a native icon manager app for Linux.
On MacOS, I relied on IconJar to select icon sets that fitted different visual styles. It also gave me lightning-fast access to glyphs I would use over and over again, like arrows and chevrons.
While we have Norde Source for Linux, sadly:
@chriswood Looking good! The color input should probably have its valign property set to center, and I wonder what the icon properties preview would look like if it was a full-height sidebar?
@chriswood SVG are rasterised on upload, and GtkImage does not change the size of its contents, so the content get stretched.
If you want to render an SVG at different sizes you will need to load it with librsvg directly and implement a GdkPaintable object; there’s a demo in gtk4-demo.
@ebassi Got it, thank you very much!
I'm writing the app in Javascript and am not familiar with C. It looks like the method gdk_paintable_snapshot is the important one, is that right? Is there any steer you could give me on how to make a snapshot from the contents of an SVG file?
@chriswood you need to implement the Gdk.Paintable interface, and override the vfunc_snapshot, vfunc_get_intrinsic_width, and vfunc_get_intrinsic_height methods. Inside the vfunc_snapshot you render to a Cairo context using Rsvg.
@chriswood In GNOME apps with sidebars, the main menu (hamburger) button is usually placed to the right in the sidebar, not to the right in the entire window itself. Also, since the sidebar hides automatically on narrow window widths, the show/collapse button is usually not displayed when the window is that wide. You may choose to not follow that convention if you think it makes sense for your app, though 🙂
@chriswood No problem! Feel free to join the #app-dev:gnome.org room on Matrix for questions about coding/designing for GNOME, there are lots of helpful people there 💬
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