anotherim-desktop/main/src/ui/util/helper.vala

using Gtk;

using Dino.Entities;
using Xmpp;

namespace Dino.Ui.Util {

private const string[] tango_colors_light = {"FCE94F", "FCAF3E", "E9B96E", "8AE234", "729FCF", "AD7FA8", "EF2929"};
private const string[] tango_colors_medium = {"EDD400", "F57900", "C17D11", "73D216", "3465A4", "75507B", "CC0000"};
private const string[] material_colors_800 = {"D32F2F", "C2185B", "7B1FA2", "512DA8", "303F9F", "1976D2", "0288D1", "0097A7", "00796B", "388E3C", "689F38", "AFB42B", "FFA000", "F57C00", "E64A19", "5D4037"};
private const string[] material_colors_500 = {"F44336", "E91E63", "9C27B0", "673AB7", "3f51B5", "2196F3", "03A9f4", "00BCD4", "009688", "4CAF50", "8BC34a", "CDDC39", "FFC107", "FF9800", "FF5722", "795548"};
private const string[] material_colors_300 = {"E57373", "F06292", "BA68C8", "9575CD", "7986CB", "64B5F6", "4FC3F7", "4DD0E1", "4DB6AC", "81C784", "AED581", "DCE775", "FFD54F", "FFB74D", "FF8A65", "A1887F"};
private const string[] material_colors_200 = {"EF9A9A", "F48FB1", "CE93D8", "B39DDB", "9FA8DA", "90CAF9", "81D4FA", "80DEEA", "80CBC4", "A5D6A7", "C5E1A5", "E6EE9C", "FFE082", "FFCC80", "FFAB91", "BCAAA4"};

public static string get_avatar_hex_color(StreamInteractor stream_interactor, Account account, Jid jid) {
    uint hash = get_relevant_jid(stream_interactor, account, jid).to_string().hash();
    return material_colors_300[hash % material_colors_300.length];
//    return tango_colors_light[name.hash() % tango_colors_light.length];
}

public static string get_name_hex_color(StreamInteractor stream_interactor, Account account, Jid jid, bool dark_theme = false) {
    uint hash = get_relevant_jid(stream_interactor, account, jid).to_string().hash();
    if (dark_theme) {
        return material_colors_300[hash % material_colors_300.length];
    } else {
        return material_colors_500[hash % material_colors_500.length];
    }
//    return tango_colors_medium[name.hash() % tango_colors_medium.length];
}

private static Jid get_relevant_jid(StreamInteractor stream_interactor, Account account, Jid jid) {
    if (stream_interactor.get_module(MucManager.IDENTITY).is_groupchat(jid.bare_jid, account)) {
        Jid? real_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(jid, account);
        if (real_jid != null) {
            return real_jid.bare_jid;
        }
    } else {
        return jid.bare_jid;
    }
    return jid;
}

public static string color_for_show(string show) {
    switch(show) {
        case "online": return "#9CCC65";
        case "away": return "#FFCA28";
        case "chat": return "#66BB6A";
        case "xa": return "#EF5350";
        case "dnd": return "#EF5350";
        default: return "#BDBDBD";
    }
}

public static string get_conversation_display_name(StreamInteractor stream_interactor, Conversation conversation) {
    if (conversation.type_ == Conversation.Type.GROUPCHAT_PM) {
        return conversation.counterpart.resourcepart + " from " + get_display_name(stream_interactor, conversation.counterpart.bare_jid, conversation.account);
    }
    return get_display_name(stream_interactor, conversation.counterpart, conversation.account);
}

public static string get_display_name(StreamInteractor stream_interactor, Jid jid, Account account) {
    if (stream_interactor.get_module(MucManager.IDENTITY).is_groupchat_occupant(jid, account)) {
        if (jid.resourcepart == account.resourcepart) {
            return account.alias; // FIXME temporary. remove again.
        }
        return jid.resourcepart;
    } else {
        if (jid.bare_jid.equals(account.bare_jid.bare_jid)) {
            if (account.alias == null || account.alias == "") {
                return account.bare_jid.to_string();
            } else {
                return account.alias;
            }
        }
        Roster.Item roster_item = stream_interactor.get_module(RosterManager.IDENTITY).get_roster_item(account, jid);
        if (roster_item != null && roster_item.name != null) {
            return roster_item.name;
        }
        return jid.bare_jid.to_string();
    }
}

public static string get_message_display_name(StreamInteractor stream_interactor, Entities.Message message, Account account) {
    return get_display_name(stream_interactor, message.from, account);
}

public static void image_set_from_scaled_pixbuf(Image image, Gdk.Pixbuf pixbuf, int scale = 0) {
    if (scale == 0) scale = image.get_scale_factor();
    image.set_from_surface(Gdk.cairo_surface_create_from_pixbuf(pixbuf, scale, image.get_window()));
}

private const string force_background_css = "%s { background-color: %s; }";
private const string force_color_css = "%s { color: %s; }";

private static void force_css(Gtk.Widget widget, string css) {
    var p = new Gtk.CssProvider();
    try {
        p.load_from_data(css);
        widget.get_style_context().add_provider(p, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
    } catch (GLib.Error err) {
        // handle err
    }
}

public static void force_background(Gtk.Widget widget, string color, string selector = "*") {
    force_css(widget, force_background_css.printf(selector, color));
}

public static void force_base_background(Gtk.Widget widget, string selector = "*") {
    force_background(widget, "@theme_base_color", selector);
}

public static void force_color(Gtk.Widget widget, string color, string selector = "*") {
    force_css(widget, force_color_css.printf(selector, color));
}

public static void force_error_color(Gtk.Widget widget, string selector = "*") {
    force_color(widget, "@error_color", selector);
}

public static bool is_dark_theme(Gtk.Widget widget) {
    Gdk.RGBA bg = widget.get_style_context().get_color(StateFlags.NORMAL);
    return (bg.red > 0.5 && bg.green > 0.5 && bg.blue > 0.5);
}

public static bool is_24h_format() {
    GLib.Settings settings = new GLib.Settings("org.gnome.desktop.interface");
    string settings_format = settings.get_string("clock-format");
    string p_format = (new DateTime.now_local()).format("%p");
    return settings_format == "24h" || p_format == " ";
}

}