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qt: add "kde" to qt.platformTheme (#4085)

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This allow you to configure Qt integration using KDE instead of
qgnomeplatform or qtstyleplugins. Useful if your theme supports both GTK
and KDE, for example Nordic.

To use this properly you will need to do some manual configuration for
now. You can set the theme settings using `~/.config/kdeglobals`.

Example:

```nix
{ ... }:
{
  qt = {
    enable = true;
    platformTheme = "kde";
  };

  xdg = {
    configFile.kdeglobals.text = lib.generators.toINI { } {
      General = {
        ColorScheme = "nordicbluish";
        Name = "nordic-bluish";
        shadeSortColumn = true;
      };
      Icons = {
        Theme = "Nordic-bluish";
      };
      KDE = {
        LookAndFeelPackage = "Nordic-bluish";
        contrast = 4;
      };
    };

    dataFile = {
      # For General.ColorScheme
      color-schemes = {
        source = "${pkgs.nordic}/share/color-schemes";
        recursive = true;
      };
      # For KDE.LookAndFeelPackage
      plasma = {
        source = "${pkgs.nordic}/share/plasma";
        recursive = true;
      };
    };
  };
}
```
This commit is contained in:
Thiago Kenji Okada 2023-06-14 19:16:20 +00:00 • committed by GitHub
parent 75b24cc557
commit 32376992f7
Failed to generate hash of commit
1 changed files with 10 additions and 3 deletions
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13
modules/misc/qt.nix
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@ -38,7 +38,7 @@ in {
enable = mkEnableOption "Qt 4 and 5 configuration";
platformTheme = mkOption {
type = types.nullOr (types.enum [ "gtk" "gnome" ]);
type = types.nullOr (types.enum [ "gtk" "gnome" "kde" ]);
default = null;
example = "gnome";
relatedPackages =
@ -59,6 +59,10 @@ in {
<link xlink:href="https://github.com/FedoraQt/QGnomePlatform">qgnomeplatform</link>
</para></listitem>
</varlistentry>
<varlistentry>
<term><literal>kde</literal></term>
<listitem><para>Use Qt settings from Plasma</para></listitem>
</varlistentry>
</variablelist>
'';
};
@ -134,14 +138,17 @@ in {
# Necessary because home.sessionVariables doesn't support mkIf
home.sessionVariables = filterAttrs (n: v: v != null) {
QT_QPA_PLATFORMTHEME =
if cfg.platformTheme == "gnome" then "gnome" else "gtk2";
if cfg.platformTheme == "gtk" then "gtk2" else cfg.platformTheme;
QT_STYLE_OVERRIDE = cfg.style.name;
};
home.packages = if cfg.platformTheme == "gnome" then
[ pkgs.qgnomeplatform ]
++ lib.optionals (cfg.style.package != null) [ cfg.style.package ]
else
else if cfg.platformTheme == "kde" then [
pkgs.libsForQt5.plasma-integration
pkgs.libsForQt5.systemsettings
] else
[ pkgs.libsForQt5.qtstyleplugins ];
xsession.importedVariables = [ "QT_QPA_PLATFORMTHEME" ]