path: root/libempathy-gtk/empathy-chat-view.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2002-2007 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.
 * 
 * Authors: Mikael Hallendal <micke@imendio.com>
 *          Richard Hult <richard@imendio.com>
 *          Martyn Russell <martyn@imendio.com>
 */

#include "config.h"

#include <telepathy-glib/util.h>
#include <libmissioncontrol/mc-account.h>

#include <libempathy/empathy-utils.h>

#include "empathy-chat-view.h"

#include "empathy-chat.h"
#include "empathy-conf.h"
#include "empathy-ui-utils.h"

#include "empathy-smiley-manager.h"

#define DEBUG_FLAG EMPATHY_DEBUG_CHAT
#include <libempathy/empathy-debug.h>

static void chat_view_base_init (gpointer klass);

GType
empathy_chat_view_get_type (void)
{
    static GType type = 0;
    
    if (!type) {
        static const GTypeInfo type_info = {
            sizeof (EmpathyChatViewIface),
            chat_view_base_init,
            NULL,
        };
        
        type = g_type_register_static (G_TYPE_INTERFACE,
                           "EmpathyChatView",
                           &type_info, 0);
        
        g_type_interface_add_prerequisite (type, G_TYPE_OBJECT);
    }
    
    return type;
}

static void
chat_view_base_init (gpointer klass)
{
    static gboolean initialized = FALSE;
    
    if (!initialized) {
        initialized = TRUE;
    }
}

/* Pads a pixbuf to the specified size, by centering it in a larger transparent
 * pixbuf. Returns a new ref.
 */
static GdkPixbuf *
chat_view_pad_to_size (GdkPixbuf *pixbuf,
               gint       width,
               gint       height,
               gint       extra_padding_right)
{
    gint       src_width, src_height;
    GdkPixbuf *padded;
    gint       x_offset, y_offset;

    src_width = gdk_pixbuf_get_width (pixbuf);
    src_height = gdk_pixbuf_get_height (pixbuf);

    x_offset = (width - src_width) / 2;
    y_offset = (height - src_height) / 2;

    padded = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (pixbuf),
                 TRUE, /* alpha */
                 gdk_pixbuf_get_bits_per_sample (pixbuf),
                 width + extra_padding_right,
                 height);

    gdk_pixbuf_fill (padded, 0);

    gdk_pixbuf_copy_area (pixbuf,
                  0, /* source coords */
                  0,
                  src_width,
                  src_height,
                  padded,
                  x_offset, /* dest coords */
                  y_offset);

    return padded;
}

typedef struct {
    GdkPixbuf *pixbuf;
    gchar     *token;
} AvatarData;

static void
chat_view_avatar_cache_data_free (gpointer ptr)
{
    AvatarData *data = ptr;

    g_object_unref (data->pixbuf);
    g_free (data->token);
    g_slice_free (AvatarData, data);
}

GdkPixbuf *
empathy_chat_view_get_avatar_pixbuf_with_cache (EmpathyContact *contact)
{
    AvatarData        *data;
    EmpathyAvatar     *avatar;
    GdkPixbuf         *tmp_pixbuf;
    GdkPixbuf         *pixbuf = NULL;

    /* Check if avatar is in cache and if it's up to date */
    avatar = empathy_contact_get_avatar (contact);
    data = g_object_get_data (G_OBJECT (contact), "chat-view-avatar-cache");
    if (data) {
        if (avatar && !tp_strdiff (avatar->token, data->token)) {
            /* We have the avatar in cache */
            return data->pixbuf;
        }
    }

    /* Avatar not in cache, create pixbuf */
    tmp_pixbuf = empathy_pixbuf_avatar_from_contact_scaled (contact, 32, 32);
    if (tmp_pixbuf) {
        pixbuf = chat_view_pad_to_size (tmp_pixbuf, 32, 32, 6);
        g_object_unref (tmp_pixbuf);
    }
    if (!pixbuf) {
        return NULL;
    }

    /* Insert new pixbuf in cache */
    data = g_slice_new0 (AvatarData);
    data->token = g_strdup (avatar->token);
    data->pixbuf = pixbuf;

    g_object_set_data_full (G_OBJECT (contact), "chat-view-avatar-cache",
                data, chat_view_avatar_cache_data_free);

    return data->pixbuf;
}

void
empathy_chat_view_scroll_down (EmpathyChatView *view)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->scroll_down) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->scroll_down (view);
    }
}

void
empathy_chat_view_append_message (EmpathyChatView *view,
                  EmpathyMessage  *msg)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->append_message) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->append_message (view, 
                                     msg);
    }
}

void
empathy_chat_view_append_event (EmpathyChatView *view,
                const gchar    *str)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->append_event) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->append_event (view,
                                       str);
    }
}

void
empathy_chat_view_append_button (EmpathyChatView *view,
                 const gchar    *message,
                 GtkWidget      *button1,
                 GtkWidget      *button2)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->append_button) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->append_button (view, 
                                    message,
                                    button1,
                                    button2);
    }
}

void
empathy_chat_view_scroll (EmpathyChatView *view,
              gboolean        allow_scrolling)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->scroll) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->scroll (view, 
                                 allow_scrolling);
    }
}

gboolean
empathy_chat_view_get_selection_bounds (EmpathyChatView *view,
                    GtkTextIter    *start,
                    GtkTextIter    *end)
{
    g_return_val_if_fail (EMPATHY_IS_CHAT_VIEW (view), FALSE);
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_selection_bounds) {
        return EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_selection_bounds (view, 
                                              start, 
                                              end);
    }
    return FALSE;
}

void
empathy_chat_view_clear (EmpathyChatView *view)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->clear) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->clear (view);
    }
}

gboolean
empathy_chat_view_find_previous (EmpathyChatView *view,
                 const gchar    *search_criteria,
                 gboolean        new_search)
{
    g_return_val_if_fail (EMPATHY_IS_CHAT_VIEW (view), FALSE);
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->find_previous) {
        return EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->find_previous (view, 
                                           search_criteria, 
                                           new_search);
    }
    return FALSE;
}

gboolean
empathy_chat_view_find_next (EmpathyChatView *view,
                 const gchar    *search_criteria,
                 gboolean        new_search)
{
    g_return_val_if_fail (EMPATHY_IS_CHAT_VIEW (view), FALSE);
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->find_next) {
        return EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->find_next (view, 
                                       search_criteria, 
                                       new_search);
    }
    return FALSE;
}


void
empathy_chat_view_find_abilities (EmpathyChatView *view,
                  const gchar    *search_criteria,
                  gboolean       *can_do_previous,
                  gboolean       *can_do_next)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->find_abilities) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->find_abilities (view, 
                                     search_criteria, 
                                     can_do_previous, 
                                     can_do_next);
    }
}

void
empathy_chat_view_highlight (EmpathyChatView *view,
                 const gchar     *text)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->highlight) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->highlight (view, text);
    }
}

void
empathy_chat_view_copy_clipboard (EmpathyChatView *view)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->copy_clipboard) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->copy_clipboard (view);
    }
}

EmpathyTheme *
empathy_chat_view_get_theme (EmpathyChatView *view)
{
    g_return_val_if_fail (EMPATHY_IS_CHAT_VIEW (view), NULL);
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_theme) {
        return EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_theme (view);
    }
    return NULL;
}

void
empathy_chat_view_set_theme (EmpathyChatView *view, EmpathyTheme *theme)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->set_theme) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->set_theme (view, theme);
    }
}

void
empathy_chat_view_set_margin (EmpathyChatView *view,
                  gint            margin)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->set_margin) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->set_margin (view, margin);
    }
}

GtkWidget *
empathy_chat_view_get_smiley_menu (GCallback    callback,
                   gpointer     user_data)
{
    EmpathySmileyManager *smiley_manager;
    GSList               *smileys, *l;
    GtkWidget            *menu;
    gint                  x = 0;
    gint                  y = 0;

    g_return_val_if_fail (callback != NULL, NULL);

    menu = gtk_menu_new ();

    smiley_manager = empathy_smiley_manager_new ();
    smileys = empathy_smiley_manager_get_all (smiley_manager);
    for (l = smileys; l; l = l->next) {
        EmpathySmiley *smiley;
        GtkWidget     *item;
        GtkWidget     *image;

        smiley = l->data;
        image = gtk_image_new_from_pixbuf (smiley->pixbuf);

        item = gtk_image_menu_item_new_with_label ("");
        gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);

        gtk_menu_attach (GTK_MENU (menu), item,
                 x, x + 1, y, y + 1);

        gtk_widget_set_tooltip_text (item, smiley->str);

        g_object_set_data  (G_OBJECT (item), "smiley_text", smiley->str);
        g_signal_connect (item, "activate", callback, user_data);

        if (x > 3) {
            y++;
            x = 0;
        } else {
            x++;
        }
    }
    g_object_unref (smiley_manager);

    gtk_widget_show_all (menu);

    return menu;
}

time_t
empathy_chat_view_get_last_timestamp (EmpathyChatView *view)
{
    g_return_val_if_fail (EMPATHY_IS_CHAT_VIEW (view), 0);
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_last_timestamp) {
        return EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_last_timestamp (view);
    }
    return 0;
}

void
empathy_chat_view_set_last_timestamp (EmpathyChatView *view,
                      time_t          timestamp)
{
    g_return_if_fail (EMPATHY_IS_CHAT_VIEW (view));
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->set_last_timestamp) {
        EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->set_last_timestamp (view, timestamp);
    }
}

EmpathyContact *
empathy_chat_view_get_last_contact (EmpathyChatView *view)
{
    g_return_val_if_fail (EMPATHY_IS_CHAT_VIEW (view), NULL);
    
    if (EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_last_contact) {
        return EMPATHY_TYPE_CHAT_VIEW_GET_IFACE (view)->get_last_contact (view);
    }
    return NULL;
}