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x11: fix build fail when glib is not detected this can happen if glib is just not installed, or if dev headers are not installed either.
author Paper <paper@tflc.us>
date Mon, 10 Nov 2025 15:51:45 -0500
parents 5eaafed6c10b
children
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daa03aa2262d sys/glib: general cleanup, use C++ principles, add more suffixes
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1 #include "sys/glib/dark_theme.h"
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2 #include "core/strings.h"
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4 #include <array>
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5 #include <cstring>
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6 #include <gio/gio.h>
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7 #include <memory>
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8 #include <string_view>
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9
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10 namespace glib {
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12 /* deleters */
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13 template<typename T>
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14 struct g_object_del {
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15 void operator()(T *p) const { ::g_object_unref(p); };
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16 };
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18 template<typename T>
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19 struct g_variant_del {
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20 void operator()(T *p) const { ::g_variant_unref(p); };
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21 };
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23 template<typename T>
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24 struct g_malloc_del {
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25 void operator()(T *p) const { ::g_free(p); };
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26 };
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28 template<typename T>
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29 using GObjectPtr = std::unique_ptr<T, g_object_del<T>>;
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31 template<typename T>
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32 using GVariantPtr = std::unique_ptr<T, g_variant_del<T>>;
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34 template<typename T>
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35 using GMallocPtr = std::unique_ptr<T, g_malloc_del<T>>;
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36
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37 bool IsInDarkTheme()
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38 {
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39 GObjectPtr<GSettings> settings(::g_settings_new("org.gnome.desktop.interface"));
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40 if (!settings)
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41 return false;
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43 {
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44 /* first attempt to get the colorscheme */
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45 GVariantPtr<GVariant> val(::g_settings_get_value(settings.get(), "color-scheme"));
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46 if (!val)
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47 return false;
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49 /* this is free'd upon deconstruction of the GVariantPtr */
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50 gsize size;
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51 const gchar *str = ::g_variant_get_string(val.get(), &size);
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52 if (!str)
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53 return false;
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55 bool success = !std::strncmp(str, "prefer-dark", size);
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57 if (success)
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58 return true;
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59 }
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61 {
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63 GVariantPtr<GVariant> gtk_theme(::g_settings_get_value(settings.get(), "gtk-theme"));
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64 if (!gtk_theme)
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65 return false;
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67 gsize size;
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68 const gchar *str = ::g_variant_get_string(gtk_theme.get(), &size);
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69 if (!str)
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70 return false;
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71
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72 if (Strings::IsGTKThemeDark({str, size}))
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73 return true;
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74 }
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75
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76 /* welp, we tried */
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77 return false;
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78 }
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80 } // namespace glib