1 files changed, 89 insertions, 0 deletions
diff --git a/src/ui/themes.h b/src/ui/themes.h
new file mode 100644
index 0000000..4e896e2
--- /dev/null
+++ b/src/ui/themes.h
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * Gtk <themes> helper code.
+ */
+/*
+ * Authors:
+ *   Jabiertxof
+ *   Martin Owens
+ *
+ * Copyright (C) 2017-2021 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef UI_THEMES_H_SEEN
+#define UI_THEMES_H_SEEN
+
+#include <cstring>
+#include <glibmm.h>
+#include <gtkmm.h>
+#include <map>
+#include <utility>
+#include <vector>
+#include <sigc++/signal.h>
+#include "preferences.h"
+
+namespace Inkscape {
+namespace UI {
+
+/**
+ * A simple mediator class that sets the state of a Gtk::ToggleToolButton when
+ * a preference is changed.  Unlike the PrefPusher class, this does not provide
+ * the reverse process, so you still need to write your own handler for the
+ * "toggled" signal on the ToggleToolButton.
+ */
+typedef std::map<Glib::ustring, bool> gtkThemeList;
+class ThemeContext
+{
+public:
+ThemeContext();
+~ThemeContext() = default;
+// Name of theme -> has dark theme
+typedef std::map<Glib::ustring, bool> gtkThemeList;
+void inkscape_fill_gtk(const gchar *path, gtkThemeList &themes);
+std::map<Glib::ustring, bool> get_available_themes();
+void add_gtk_css(bool only_providers, bool cached = false);
+void add_icon_theme();
+Glib::ustring get_symbolic_colors();
+Glib::RefPtr<Gtk::CssProvider> getColorizeProvider() { return _colorizeprovider;}
+Glib::RefPtr<Gtk::CssProvider> getContrastThemeProvider() { return _contrastthemeprovider;}
+Glib::RefPtr<Gtk::CssProvider> getThemeProvider() { return _themeprovider;}
+Glib::RefPtr<Gtk::CssProvider> getStyleProvider() { return _styleprovider;}
+sigc::signal<void> getChangeThemeSignal() { return _signal_change_theme;}
+// set application-wide font size adjustment by a factor, where 1 is 100% (no change)
+void adjust_global_font_scale(double factor);
+
+// True if current theme (applied one) is dark
+bool isCurrentThemeDark(Gtk::Container *window);
+
+static std::vector<guint32> getHighlightColors(Gtk::Window *window);
+
+private:
+    // user change theme
+    sigc::signal<void> _signal_change_theme;
+    Glib::RefPtr<Gtk::CssProvider> _styleprovider;
+    Glib::RefPtr<Gtk::CssProvider> _themeprovider;
+    Glib::RefPtr<Gtk::CssProvider> _contrastthemeprovider;
+    Glib::RefPtr<Gtk::CssProvider> _colorizeprovider;
+    Glib::RefPtr<Gtk::CssProvider> _spinbuttonprovider;
+#if __APPLE__
+  Glib::RefPtr<Gtk::CssProvider> _macstyleprovider;
+#endif
+    std::unique_ptr<Preferences::Observer> _spinbutton_observer;
+    Glib::RefPtr<Gtk::CssProvider> _fontsizeprovider = Gtk::CssProvider::create();
+};
+
+}
+}
+#endif /* !UI_THEMES_H_SEEN */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :