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

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 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-debug.h>
#include <libempathy/empathy-utils.h>

#include "empathy-chat.h"
#include "empathy-conf.h"
#include "empathy-preferences.h"
#include "empathy-theme.h"
#include "empathy-smiley-manager.h"

#define DEBUG_DOMAIN "Theme"

/* Number of seconds between timestamps when using normal mode, 5 minutes. */
#define TIMESTAMP_INTERVAL 300

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_THEME, EmpathyThemePriv))

typedef struct _EmpathyThemePriv EmpathyThemePriv;

struct _EmpathyThemePriv {
    EmpathySmileyManager *smiley_manager;
    gboolean show_avatars;
};

static void         theme_finalize            (GObject            *object);
static void         theme_get_property        (GObject            *object,
                           guint               param_id,
                           GValue             *value,
                           GParamSpec         *pspec);
static void         theme_set_property        (GObject            *object,
                           guint               param_id,
                           const GValue       *value,
                           GParamSpec         *pspec);


G_DEFINE_TYPE (EmpathyTheme, empathy_theme, G_TYPE_OBJECT);

enum {
    PROP_0,
    PROP_SHOW_AVATARS
};

static void
empathy_theme_class_init (EmpathyThemeClass *class)
{
    GObjectClass *object_class;

    object_class = G_OBJECT_CLASS (class);

    object_class->finalize     = theme_finalize;
    object_class->get_property = theme_get_property;
    object_class->set_property = theme_set_property;

    class->update_view      = NULL;
    class->append_message   = NULL;
    class->append_event     = NULL;
    class->append_timestamp = NULL;
    class->append_spacing   = NULL;

    g_object_class_install_property (object_class,
                     PROP_SHOW_AVATARS,
                     g_param_spec_boolean ("show-avatars",
                                   "", "",
                                   TRUE,
                                   G_PARAM_READWRITE));

    g_type_class_add_private (object_class, sizeof (EmpathyThemePriv));
}

static void
empathy_theme_init (EmpathyTheme *presence)
{
    EmpathyThemePriv *priv;

    priv = GET_PRIV (presence);

    priv->smiley_manager = empathy_smiley_manager_new ();
}

static void
theme_finalize (GObject *object)
{
    EmpathyThemePriv *priv;

    priv = GET_PRIV (object);

    if (priv->smiley_manager) {
        g_object_unref (priv->smiley_manager);
    }

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

static void
theme_get_property (GObject    *object,
            guint       param_id,
            GValue     *value,
            GParamSpec *pspec)
{
    EmpathyThemePriv *priv;

    priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_SHOW_AVATARS:
        g_value_set_boolean (value, priv->show_avatars);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    }
}

static void
theme_set_property (GObject      *object,
                    guint         param_id,
                    const GValue *value,
                    GParamSpec   *pspec)
{
    EmpathyThemePriv *priv;

    priv = GET_PRIV (object);

    switch (param_id) {
    case PROP_SHOW_AVATARS:
        empathy_theme_set_show_avatars (EMPATHY_THEME (object),
                        g_value_get_boolean (value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
        break;
    }
}

void
empathy_theme_maybe_append_date_and_time (EmpathyTheme        *theme,
                     EmpathyChatView     *view,
                     EmpathyMessage      *message)
{
    time_t    timestamp;
    GDate    *date, *last_date;
    gboolean  append_date, append_time;

    date = empathy_message_get_date_and_time (message, &timestamp);

    last_date = g_date_new ();
    g_date_set_time (last_date, empathy_chat_view_get_last_timestamp (view));

    append_date = FALSE;
    append_time = FALSE;

    if (g_date_compare (date, last_date) > 0) {
        append_date = TRUE;
        append_time = TRUE;
    }
    
    g_date_free (last_date);
    g_date_free (date);

    if (empathy_chat_view_get_last_timestamp (view) + TIMESTAMP_INTERVAL < timestamp) {
        append_time = TRUE;
    }

    if (append_time || append_date) {
        empathy_theme_append_timestamp (theme, view, message,
                           append_date, append_time);
    }
}

void
empathy_theme_update_view (EmpathyTheme    *theme,
               EmpathyChatView *view)
{
    if (!EMPATHY_THEME_GET_CLASS(theme)->update_view) {
        g_error ("Theme must override update_view");
    }

    return EMPATHY_THEME_GET_CLASS(theme)->update_view (theme, view);
}

void
empathy_theme_append_message (EmpathyTheme        *theme,
                 EmpathyChatView     *view,
                 EmpathyMessage      *message)
{
    if (!EMPATHY_THEME_GET_CLASS(theme)->append_message) {
        g_warning ("Theme should override append_message");
        return;
    }

    EMPATHY_THEME_GET_CLASS(theme)->append_message (theme, view, message);
}

static void
theme_insert_text_with_emoticons (GtkTextBuffer *buf,
                  GtkTextIter   *iter,
                  const gchar   *str,
                  EmpathySmileyManager *smiley_manager)
{
    gboolean             use_smileys = FALSE;
    GSList              *smileys, *l;

    empathy_conf_get_bool (empathy_conf_get (),
                  EMPATHY_PREFS_CHAT_SHOW_SMILEYS,
                  &use_smileys);

    if (!use_smileys) {
        gtk_text_buffer_insert (buf, iter, str, -1);
        return;
    }

    smileys = empathy_smiley_manager_parse (smiley_manager, str);
    for (l = smileys; l; l = l->next) {
        EmpathySmiley *smiley;

        smiley = l->data;
        if (smiley->pixbuf) {
            gtk_text_buffer_insert_pixbuf (buf, iter, smiley->pixbuf);
        } else {
            gtk_text_buffer_insert (buf, iter, smiley->str, -1);
        }
        empathy_smiley_free (smiley);
    }
    g_slist_free (smileys);
}

void
empathy_theme_append_text (EmpathyTheme        *theme,
              EmpathyChatView     *view,
              const gchar        *body,
              const gchar        *tag,
              const gchar        *link_tag)
{
    EmpathyThemePriv *priv;
    GtkTextBuffer   *buffer;
    GtkTextIter      start_iter, end_iter;
    GtkTextMark     *mark;
    GtkTextIter      iter;
    gint             num_matches, i;
    GArray          *start, *end;

    priv = GET_PRIV (theme);
    buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));

    gtk_text_buffer_get_end_iter (buffer, &start_iter);
    mark = gtk_text_buffer_create_mark (buffer, NULL, &start_iter, TRUE);

    start = g_array_new (FALSE, FALSE, sizeof (gint));
    end = g_array_new (FALSE, FALSE, sizeof (gint));

    num_matches = empathy_regex_match (EMPATHY_REGEX_ALL, body, start, end);

    if (num_matches == 0) {
        gtk_text_buffer_get_end_iter (buffer, &iter);
        theme_insert_text_with_emoticons (buffer, &iter, body, priv->smiley_manager);
    } else {
        gint   last = 0;
        gint   s = 0, e = 0;
        gchar *tmp;

        for (i = 0; i < num_matches; i++) {
            s = g_array_index (start, gint, i);
            e = g_array_index (end, gint, i);

            if (s > last) {
                tmp = empathy_substring (body, last, s);

                gtk_text_buffer_get_end_iter (buffer, &iter);
                theme_insert_text_with_emoticons (buffer,
                                  &iter,
                                  tmp,
                                  priv->smiley_manager);
                g_free (tmp);
            }

            tmp = empathy_substring (body, s, e);

            gtk_text_buffer_get_end_iter (buffer, &iter);
            if (!link_tag) {
                gtk_text_buffer_insert (buffer, &iter,
                            tmp, -1);
            } {
                gtk_text_buffer_insert_with_tags_by_name (buffer,
                                      &iter,
                                      tmp,
                                      -1,
                                      link_tag,
                                      "link",
                                      NULL);
            }

            g_free (tmp);

            last = e;
        }

        if (e < strlen (body)) {
            tmp = empathy_substring (body, e, strlen (body));

            gtk_text_buffer_get_end_iter (buffer, &iter);
            theme_insert_text_with_emoticons (buffer,
                              &iter,
                              tmp,
                              priv->smiley_manager);
            g_free (tmp);
        }
    }

    g_array_free (start, TRUE);
    g_array_free (end, TRUE);

    gtk_text_buffer_get_end_iter (buffer, &iter);
    gtk_text_buffer_insert (buffer, &iter, "\n", 1);

    /* Apply the style to the inserted text. */
    gtk_text_buffer_get_iter_at_mark (buffer, &start_iter, mark);
    gtk_text_buffer_get_end_iter (buffer, &end_iter);

    gtk_text_buffer_apply_tag_by_name (buffer,
                       tag,
                       &start_iter,
                       &end_iter);

    gtk_text_buffer_delete_mark (buffer, mark);
}

void 
empathy_theme_append_event (EmpathyTheme        *theme,
               EmpathyChatView     *view,
               const gchar        *str)
{
    if (!EMPATHY_THEME_GET_CLASS(theme)->append_event) {
        return;
    }

    EMPATHY_THEME_GET_CLASS(theme)->append_event (theme, view, str);
}

void
empathy_theme_append_spacing (EmpathyTheme        *theme, 
                 EmpathyChatView     *view)
{
    if (!EMPATHY_THEME_GET_CLASS(theme)->append_spacing) {
        return;
    }

    EMPATHY_THEME_GET_CLASS(theme)->append_spacing (theme, view);
}


void 
empathy_theme_append_timestamp (EmpathyTheme        *theme,
                   EmpathyChatView     *view,
                   EmpathyMessage      *message,
                   gboolean            show_date,
                   gboolean            show_time)
{
    if (!EMPATHY_THEME_GET_CLASS(theme)->append_timestamp) {
        return;
    }

    EMPATHY_THEME_GET_CLASS(theme)->append_timestamp (theme, view,
                             message, show_date,
                             show_time);
}

gboolean
empathy_theme_get_show_avatars (EmpathyTheme *theme)
{
    EmpathyThemePriv *priv;

    g_return_val_if_fail (EMPATHY_IS_THEME (theme), FALSE);

    priv = GET_PRIV (theme);

    return priv->show_avatars;
}

void
empathy_theme_set_show_avatars (EmpathyTheme *theme, gboolean show)
{
    EmpathyThemePriv *priv;

    g_return_if_fail (EMPATHY_IS_THEME (theme));

    priv = GET_PRIV (theme);

    priv->show_avatars = show;

    g_object_notify (G_OBJECT (theme), "show-avatars");
}