path: root/libempathy-gtk/empathy-theme-manager.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2005-2007 Imendio AB
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include "config.h"

#include <string.h>

#include <glib/gi18n.h>
#include <gtk/gtk.h>

#include <libempathy/empathy-utils.h>

#include "empathy-chat-view.h"
#include "empathy-conf.h"
#include "empathy-preferences.h"
#include "empathy-theme.h"
#include "empathy-theme-boxes.h"
#include "empathy-theme-irc.h"
#include "empathy-theme-manager.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_THEME_MANAGER, EmpathyThemeManagerPriv))

typedef struct {
    gchar       *name;
    guint        name_notify_id;
    guint        room_notify_id;

    gboolean     show_avatars;
    guint        show_avatars_notify_id;

    EmpathyTheme *clean_theme;
    EmpathyTheme *simple_theme;
    EmpathyTheme *blue_theme;
    EmpathyTheme *classic_theme;

    GtkSettings  *settings;
} EmpathyThemeManagerPriv;

static void        theme_manager_finalize                 (GObject            *object);
static void        theme_manager_notify_name_cb           (EmpathyConf         *conf,
                               const gchar        *key,
                               gpointer            user_data);
static void        theme_manager_notify_room_cb           (EmpathyConf         *conf,
                               const gchar        *key,
                               gpointer            user_data);
static void        theme_manager_notify_show_avatars_cb   (EmpathyConf         *conf,
                               const gchar        *key,
                               gpointer            user_data);
static void        theme_manager_apply_theme              (EmpathyThemeManager *manager,
                               EmpathyChatView     *view,
                               const gchar        *name);

enum {
    THEME_CHANGED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

static const gchar *themes[] = {
    "classic", N_("Classic"),
    "simple", N_("Simple"),
    "clean", N_("Clean"),
    "blue", N_("Blue"),
    NULL
};

G_DEFINE_TYPE (EmpathyThemeManager, empathy_theme_manager, G_TYPE_OBJECT);

static void
theme_manager_gdk_color_to_hex (GdkColor *gdk_color, gchar *str_color)
{
    g_snprintf (str_color, 10, 
            "#%02x%02x%02x", 
            gdk_color->red >> 8,
            gdk_color->green >> 8,
            gdk_color->blue >> 8);
}
 
 static void
theme_manager_color_hash_notify_cb (EmpathyThemeManager *manager)
{
    EmpathyThemeManagerPriv *priv;
    GtkStyle                *style;
    gchar                    color[10];

    priv = GET_PRIV (manager);

    style = gtk_widget_get_default_style ();

    g_object_freeze_notify (G_OBJECT (priv->simple_theme));

    theme_manager_gdk_color_to_hex (&style->base[GTK_STATE_SELECTED], color);
    g_object_set (priv->simple_theme,
              "action-foreground", color,
              "link-foreground", color,
              NULL);
 
    theme_manager_gdk_color_to_hex (&style->bg[GTK_STATE_SELECTED], color);
    g_object_set (priv->simple_theme,
              "header-background", color,
              NULL);

    theme_manager_gdk_color_to_hex (&style->dark[GTK_STATE_SELECTED], color);
    g_object_set (priv->simple_theme,
              "header-line-background", color,
              NULL);

    theme_manager_gdk_color_to_hex (&style->fg[GTK_STATE_SELECTED], color);
    g_object_set (priv->simple_theme,
              "header-foreground", color,
              NULL);

    g_object_thaw_notify (G_OBJECT (priv->simple_theme));

#if 0

FIXME: Make that work, it should update color when theme changes but it
       doesnt seems to work with all themes.
  
    g_object_get (priv->settings,
              "color-hash", &color_hash,
              NULL);

    /*
     * base_color: #ffffffffffff
     * fg_color: #000000000000
     * bg_color: #e6e6e7e7e8e8
     * text_color: #000000000000
     * selected_bg_color: #58589a9adbdb
     * selected_fg_color: #ffffffffffff
     */

    color = g_hash_table_lookup (color_hash, "base_color");
    if (color) {
        theme_manager_gdk_color_to_hex (color, color_str);
        g_object_set (priv->simple_theme,
                  "action-foreground", color_str,
                  "link-foreground", color_str,
                  NULL);
    }

    color = g_hash_table_lookup (color_hash, "selected_bg_color");
    if (color) {
        theme_manager_gdk_color_to_hex (color, color_str);
        g_object_set (priv->simple_theme,
                  "header-background", color_str,
                  NULL);
    }

    color = g_hash_table_lookup (color_hash, "bg_color");
    if (color) {
        GdkColor tmp;

        tmp = *color;
        tmp.red /= 2;
        tmp.green /= 2;
        tmp.blue /= 2;
        theme_manager_gdk_color_to_hex (&tmp, color_str);
        g_object_set (priv->simple_theme,
                  "header-line-background", color_str,
                  NULL);
    }

    color = g_hash_table_lookup (color_hash, "selected_fg_color");
    if (color) {
        theme_manager_gdk_color_to_hex (color, color_str);
        g_object_set (priv->simple_theme,
                  "header-foreground", color_str,
                  NULL);
    }

    g_hash_table_unref (color_hash);

#endif
}

static void
empathy_theme_manager_class_init (EmpathyThemeManagerClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    signals[THEME_CHANGED] =
        g_signal_new ("theme-changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE,
                  0);

    g_type_class_add_private (object_class, sizeof (EmpathyThemeManagerPriv));

    object_class->finalize = theme_manager_finalize;
}

static void
empathy_theme_manager_init (EmpathyThemeManager *manager)
{
    EmpathyThemeManagerPriv *priv;

    priv = GET_PRIV (manager);

    priv->name_notify_id =
        empathy_conf_notify_add (empathy_conf_get (),
                    EMPATHY_PREFS_CHAT_THEME,
                    theme_manager_notify_name_cb,
                    manager);

    priv->room_notify_id =
        empathy_conf_notify_add (empathy_conf_get (),
                    EMPATHY_PREFS_CHAT_THEME_CHAT_ROOM,
                    theme_manager_notify_room_cb,
                    manager);

    empathy_conf_get_string (empathy_conf_get (),
                EMPATHY_PREFS_CHAT_THEME,
                &priv->name);

    /* Unused right now, but will be used soon. */
    priv->show_avatars_notify_id =
        empathy_conf_notify_add (empathy_conf_get (),
                    EMPATHY_PREFS_UI_SHOW_AVATARS,
                    theme_manager_notify_show_avatars_cb,
                    manager);

    empathy_conf_get_bool (empathy_conf_get (),
                  EMPATHY_PREFS_UI_SHOW_AVATARS,
                  &priv->show_avatars);

    priv->settings = gtk_settings_get_default ();
    g_signal_connect_swapped (priv->settings, "notify::color-hash",
                  G_CALLBACK (theme_manager_color_hash_notify_cb),
                  manager);

    priv->simple_theme = g_object_new (EMPATHY_TYPE_THEME_BOXES, NULL);
    theme_manager_color_hash_notify_cb (manager);

    priv->clean_theme = g_object_new (EMPATHY_TYPE_THEME_BOXES,
                      "header-foreground", "black",
                      "header-background", "#efefdf",
                      "header_line_background", "#e3e3d3",
                      "action_foreground", "brown4",
                      "time_foreground", "darkgrey",
                      "event_foreground", "darkgrey",
                      "invite_foreground", "sienna",
                      "link_foreground","#49789e",
                      NULL);

    priv->blue_theme = g_object_new (EMPATHY_TYPE_THEME_BOXES,
                     "header_foreground", "black",
                     "header_background", "#88a2b4",
                     "header_line_background", "#7f96a4",
                     "text_foreground", "black",
                     "text_background", "#adbdc8",
                     "highlight_foreground", "black",
                     "action_foreground", "brown4",
                     "time_foreground", "darkgrey",
                     "event_foreground", "#7f96a4",
                     "invite_foreground", "sienna",
                     "link_foreground", "#49789e",
                     NULL);

    priv->classic_theme = g_object_new (EMPATHY_TYPE_THEME_IRC, NULL);
}

static void
theme_manager_finalize (GObject *object)
{
    EmpathyThemeManagerPriv *priv;

    priv = GET_PRIV (object);

    empathy_conf_notify_remove (empathy_conf_get (), priv->name_notify_id);
    empathy_conf_notify_remove (empathy_conf_get (), priv->room_notify_id);
    empathy_conf_notify_remove (empathy_conf_get (), priv->show_avatars_notify_id);

    g_free (priv->name);

    g_object_unref (priv->clean_theme);
    g_object_unref (priv->simple_theme);
    g_object_unref (priv->blue_theme);
    g_object_unref (priv->classic_theme);

    G_OBJECT_CLASS (empathy_theme_manager_parent_class)->finalize (object);
}

static void
theme_manager_notify_name_cb (EmpathyConf  *conf,
                  const gchar *key,
                  gpointer     user_data)
{
    EmpathyThemeManager     *manager;
    EmpathyThemeManagerPriv *priv;
    gchar                  *name;

    manager = user_data;
    priv = GET_PRIV (manager);

    g_free (priv->name);

    name = NULL;
    if (!empathy_conf_get_string (conf, key, &name) ||
        name == NULL || name[0] == 0) {
        priv->name = g_strdup ("classic");
        g_free (name);
    } else {
        priv->name = name;
    }

    g_signal_emit (manager, signals[THEME_CHANGED], 0, NULL);
}

static void
theme_manager_notify_room_cb (EmpathyConf  *conf,
                  const gchar *key,
                  gpointer     user_data)
{
    g_signal_emit (user_data, signals[THEME_CHANGED], 0, NULL);
}

static void
theme_manager_notify_show_avatars_cb (EmpathyConf  *conf,
                      const gchar *key,
                      gpointer     user_data)
{
    EmpathyThemeManager     *manager;
    EmpathyThemeManagerPriv *priv;
    gboolean                value;

    manager = user_data;
    priv = GET_PRIV (manager);

    if (!empathy_conf_get_bool (conf, key, &value)) {
        priv->show_avatars = FALSE;
    } else {
        priv->show_avatars = value;
    }
}

static gboolean
theme_manager_ensure_theme_exists (const gchar *name)
{
    gint i;

    if (G_STR_EMPTY (name)) {
        return FALSE;
    }

    for (i = 0; themes[i]; i += 2) {
        if (strcmp (themes[i], name) == 0) {
            return TRUE;
        }
    }

    return FALSE;
}

static void
theme_manager_apply_theme (EmpathyThemeManager *manager,
               EmpathyChatView     *view,
               const gchar        *name)
{
    EmpathyThemeManagerPriv *priv;
    EmpathyTheme            *theme;

    priv = GET_PRIV (manager);

    /* Make sure all tags are present. Note: not useful now but when we have
     * user defined theme it will be.
     */
    if (theme_manager_ensure_theme_exists (name)) {
        if (strcmp (name, "clean") == 0) {
            theme = priv->clean_theme;
        }
        else if (strcmp (name, "simple") == 0) {
            theme = priv->simple_theme;
        }
        else if (strcmp (name, "blue") == 0) {
            theme = priv->blue_theme;
        } else {
            theme = priv->classic_theme;
        }
    } else {
        theme = priv->classic_theme;
    }

    empathy_chat_view_set_theme (view, theme);
}

EmpathyThemeManager *
empathy_theme_manager_get (void)
{
    static EmpathyThemeManager *manager = NULL;

    if (!manager) {
        manager = g_object_new (EMPATHY_TYPE_THEME_MANAGER, NULL);
    }

    return manager;
}

const gchar **
empathy_theme_manager_get_themes (void)
{
    return themes;
}

void
empathy_theme_manager_apply (EmpathyThemeManager *manager,
                EmpathyChatView     *view,
                const gchar        *name)
{
    EmpathyThemeManagerPriv *priv;

    priv = GET_PRIV (manager);

    theme_manager_apply_theme (manager, view, name);
}

void
empathy_theme_manager_apply_saved (EmpathyThemeManager *manager,
                  EmpathyChatView     *view)
{
    EmpathyThemeManagerPriv *priv;

    priv = GET_PRIV (manager);

    theme_manager_apply_theme (manager, view, priv->name);
}