libempathy-gtk/empathy-theme-boxes.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2007 Imendio AB
   4  * Copyright (C) 2008 Collabora Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  19  * Boston, MA  02110-1301  USA
  20  *
  21  * Authors: Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include <config.h>
  25
  26 #include <string.h>
  27
  28 #include <glib/gi18n-lib.h>
  29 #include <gtk/gtk.h>
  30
  31 #include <telepathy-glib/util.h>
  32
  33 #include <libempathy/empathy-utils.h>
  34 #include "empathy-theme-boxes.h"
  35 #include "empathy-ui-utils.h"
  36 #include "empathy-conf.h"
  37
  38 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  39 #include <libempathy/empathy-debug.h>
  40
  41 #define MARGIN 4
  42 #define HEADER_PADDING 2
  43
  44 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyThemeBoxes)
  45 typedef struct {
  46         gboolean show_avatars;
  47         guint    notify_show_avatars_id;
  48 } EmpathyThemeBoxesPriv;
  49
  50 G_DEFINE_TYPE (EmpathyThemeBoxes, empathy_theme_boxes, EMPATHY_TYPE_CHAT_TEXT_VIEW);
  51
  52 static void
  53 theme_boxes_create_tags (EmpathyThemeBoxes *theme)
  54 {
  55         GtkTextBuffer *buffer;
  56
  57         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (theme));
  58
  59         gtk_text_buffer_create_tag (buffer, EMPATHY_THEME_BOXES_TAG_HEADER,
  60                                     "pixels-above-lines", HEADER_PADDING,
  61                                     "pixels-below-lines", HEADER_PADDING,
  62                                     NULL);
  63
  64         gtk_text_buffer_create_tag (buffer, EMPATHY_THEME_BOXES_TAG_HEADER_LINE, NULL);
  65 }
  66
  67 /* Pads a pixbuf to the specified size, by centering it in a larger transparent
  68  * pixbuf. Returns a new ref.
  69  */
  70 static GdkPixbuf *
  71 theme_boxes_pad_to_size (GdkPixbuf *pixbuf,
  72                          gint       width,
  73                          gint       height,
  74                          gint       extra_padding_right)
  75 {
  76         gint       src_width, src_height;
  77         GdkPixbuf *padded;
  78         gint       x_offset, y_offset;
  79
  80         src_width = gdk_pixbuf_get_width (pixbuf);
  81         src_height = gdk_pixbuf_get_height (pixbuf);
  82
  83         x_offset = (width - src_width) / 2;
  84         y_offset = (height - src_height) / 2;
  85
  86         padded = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (pixbuf),
  87                                  TRUE, /* alpha */
  88                                  gdk_pixbuf_get_bits_per_sample (pixbuf),
  89                                  width + extra_padding_right,
  90                                  height);
  91
  92         gdk_pixbuf_fill (padded, 0);
  93
  94         gdk_pixbuf_copy_area (pixbuf,
  95                               0, /* source coords */
  96                               0,
  97                               src_width,
  98                               src_height,
  99                               padded,
 100                               x_offset, /* dest coords */
 101                               y_offset);
 102
 103         return padded;
 104 }
 105
 106 typedef struct {
 107         GdkPixbuf *pixbuf;
 108         gchar     *token;
 109 } AvatarData;
 110
 111 static void
 112 theme_boxes_avatar_cache_data_free (gpointer ptr)
 113 {
 114         AvatarData *data = ptr;
 115
 116         g_object_unref (data->pixbuf);
 117         g_free (data->token);
 118         g_slice_free (AvatarData, data);
 119 }
 120
 121 static GdkPixbuf *
 122 theme_boxes_get_avatar_pixbuf_with_cache (EmpathyContact *contact)
 123 {
 124         AvatarData        *data;
 125         EmpathyAvatar     *avatar;
 126         GdkPixbuf         *tmp_pixbuf;
 127         GdkPixbuf         *pixbuf = NULL;
 128
 129         /* Check if avatar is in cache and if it's up to date */
 130         avatar = empathy_contact_get_avatar (contact);
 131         data = g_object_get_data (G_OBJECT (contact), "chat-view-avatar-cache");
 132         if (data) {
 133                 if (avatar && !tp_strdiff (avatar->token, data->token)) {
 134                         /* We have the avatar in cache */
 135                         return data->pixbuf;
 136                 }
 137         }
 138
 139         /* Avatar not in cache, create pixbuf */
 140         tmp_pixbuf = empathy_pixbuf_avatar_from_contact_scaled (contact, 32, 32);
 141         if (tmp_pixbuf) {
 142                 pixbuf = theme_boxes_pad_to_size (tmp_pixbuf, 32, 32, 6);
 143                 g_object_unref (tmp_pixbuf);
 144         }
 145         if (!pixbuf) {
 146                 return NULL;
 147         }
 148
 149         /* Insert new pixbuf in cache */
 150         data = g_slice_new0 (AvatarData);
 151         data->token = g_strdup (avatar->token);
 152         data->pixbuf = pixbuf;
 153
 154         g_object_set_data_full (G_OBJECT (contact), "chat-view-avatar-cache",
 155                                 data, theme_boxes_avatar_cache_data_free);
 156
 157         return data->pixbuf;
 158 }
 159
 160 static void
 161 table_size_allocate_cb (GtkWidget     *view,
 162                         GtkAllocation *allocation,
 163                         GtkWidget     *box)
 164 {
 165         gint width, height;
 166
 167         gtk_widget_get_size_request (box, NULL, &height);
 168
 169         width = allocation->width;
 170
 171         width -= \
 172                 gtk_text_view_get_right_margin (GTK_TEXT_VIEW (view)) - \
 173                 gtk_text_view_get_left_margin (GTK_TEXT_VIEW (view));
 174         width -= 2 * MARGIN;
 175         width -= 2 * HEADER_PADDING;
 176
 177         gtk_widget_set_size_request (box, width, height);
 178 }
 179
 180 static void
 181 theme_boxes_maybe_append_header (EmpathyThemeBoxes *theme,
 182                                  EmpathyMessage    *msg)
 183 {
 184         EmpathyChatTextView  *view = EMPATHY_CHAT_TEXT_VIEW (theme);
 185         EmpathyThemeBoxesPriv*priv = GET_PRIV (theme);
 186         EmpathyContact       *contact;
 187         EmpathyContact       *last_contact;
 188         GdkPixbuf            *avatar = NULL;
 189         GtkTextBuffer        *buffer;
 190         const gchar          *name;
 191         GtkTextIter           iter;
 192         GtkWidget            *label1, *label2;
 193         GtkTextChildAnchor   *anchor;
 194         GtkWidget            *box;
 195         gchar                *str;
 196         time_t                time_;
 197         gchar                *tmp;
 198         GtkTextIter           start;
 199         gboolean              color_set;
 200         GtkTextTagTable      *table;
 201         GtkTextTag           *tag;
 202         GString              *str_obj;
 203
 204         contact = empathy_message_get_sender (msg);
 205         name = empathy_contact_get_name (contact);
 206         last_contact = empathy_chat_text_view_get_last_contact (view);
 207         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (theme));
 208
 209         DEBUG ("Maybe add fancy header");
 210
 211         /* Only insert a header if the previously inserted block is not the same
 212          * as this one.
 213          */
 214         if (empathy_contact_equal (last_contact, contact)) {
 215                 return;
 216         }
 217
 218         empathy_chat_text_view_append_spacing (view);
 219
 220         /* Insert header line */
 221         gtk_text_buffer_get_end_iter (buffer, &iter);
 222         gtk_text_buffer_insert_with_tags_by_name (buffer,
 223                                                   &iter,
 224                                                   "\n",
 225                                                   -1,
 226                                                   EMPATHY_THEME_BOXES_TAG_HEADER_LINE,
 227                                                   NULL);
 228
 229         gtk_text_buffer_get_end_iter (buffer, &iter);
 230         anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
 231
 232         /* Create a hbox for the header and resize it when the view allocation
 233          * changes */
 234         box = gtk_hbox_new (FALSE, 0);
 235         g_signal_connect_object (view, "size-allocate",
 236                                  G_CALLBACK (table_size_allocate_cb),
 237                                  box, 0);
 238
 239         /* Add avatar to the box if needed */
 240         if (priv->show_avatars) {
 241                 avatar = theme_boxes_get_avatar_pixbuf_with_cache (contact);
 242                 if (avatar) {
 243                         GtkWidget *image;
 244
 245                         image = gtk_image_new_from_pixbuf (avatar);
 246
 247                         gtk_box_pack_start (GTK_BOX (box), image,
 248                                             FALSE, TRUE, 2);
 249                 }
 250         }
 251
 252         /* Add contact alias */
 253         str = g_markup_printf_escaped ("<b>%s</b>", name);
 254         label1 = g_object_new (GTK_TYPE_LABEL,
 255                                "label", str,
 256                                "use-markup", TRUE,
 257                                "xalign", 0.0,
 258                                NULL);
 259         g_free (str);
 260
 261         /* Add the message receive time */
 262         time_ = empathy_message_get_timestamp (msg);
 263         tmp = empathy_time_to_string_local (time_,
 264                                            EMPATHY_TIME_FORMAT_DISPLAY_SHORT);
 265         str = g_strdup_printf ("<i>%s</i>", tmp);
 266         label2 = g_object_new (GTK_TYPE_LABEL,
 267                                "label", str,
 268                                "use-markup", TRUE,
 269                                "xalign", 1.0,
 270                                NULL);
 271
 272         str_obj = g_string_new ("\n- ");
 273         g_string_append (str_obj, name);
 274         g_string_append (str_obj, ", ");
 275         g_string_append (str_obj, tmp);
 276         g_string_append (str_obj, " -");
 277         g_free (tmp);
 278         g_free (str);
 279
 280         /* Set foreground color of labels to the same color than the header tag. */
 281         table = gtk_text_buffer_get_tag_table (buffer);
 282         tag = gtk_text_tag_table_lookup (table, EMPATHY_THEME_BOXES_TAG_HEADER);
 283         g_object_get (tag, "foreground-set", &color_set, NULL);
 284         if (color_set) {
 285                 GdkColor *color;
 286
 287                 g_object_get (tag, "foreground-gdk", &color, NULL);
 288                 gtk_widget_modify_fg (label1, GTK_STATE_NORMAL, color);
 289                 gtk_widget_modify_fg (label2, GTK_STATE_NORMAL, color);
 290                 gdk_color_free (color);
 291         }
 292
 293         /* Pack labels into the box */
 294         gtk_misc_set_alignment (GTK_MISC (label1), 0.0, 0.5);
 295         gtk_misc_set_alignment (GTK_MISC (label2), 1.0, 0.5);
 296         gtk_box_pack_start (GTK_BOX (box), label1, TRUE, TRUE, 0);
 297         gtk_box_pack_start (GTK_BOX (box), label2, TRUE, TRUE, 0);
 298
 299         /* Add the header box to the text view */
 300         g_object_set_data_full (G_OBJECT (box),
 301                                 "str_obj",
 302                                 g_string_free (str_obj, FALSE),
 303                                 g_free);
 304         gtk_text_view_add_child_at_anchor (GTK_TEXT_VIEW (view),
 305                                            box,
 306                                            anchor);
 307         gtk_widget_show_all (box);
 308
 309         /* Insert a header line */
 310         gtk_text_buffer_get_end_iter (buffer, &iter);
 311         start = iter;
 312         gtk_text_iter_backward_char (&start);
 313         gtk_text_buffer_apply_tag_by_name (buffer,
 314                                            EMPATHY_THEME_BOXES_TAG_HEADER,
 315                                            &start, &iter);
 316         gtk_text_buffer_insert_with_tags_by_name (buffer,
 317                                                   &iter,
 318                                                   "\n",
 319                                                   -1,
 320                                                   EMPATHY_THEME_BOXES_TAG_HEADER,
 321                                                   NULL);
 322         gtk_text_buffer_get_end_iter (buffer, &iter);
 323         gtk_text_buffer_insert_with_tags_by_name (buffer,
 324                                                   &iter,
 325                                                   "\n",
 326                                                   -1,
 327                                                   EMPATHY_THEME_BOXES_TAG_HEADER_LINE,
 328                                                   NULL);
 329 }
 330
 331 static void
 332 theme_boxes_append_message (EmpathyChatTextView *view,
 333                             EmpathyMessage      *message)
 334 {
 335         EmpathyContact *sender;
 336
 337         theme_boxes_maybe_append_header (EMPATHY_THEME_BOXES (view), message);
 338
 339         sender = empathy_message_get_sender (message);
 340         if (empathy_message_get_tptype (message) ==
 341             TP_CHANNEL_TEXT_MESSAGE_TYPE_ACTION) {
 342                 gchar *body;
 343
 344                 body = g_strdup_printf (" * %s %s",
 345                                         empathy_contact_get_name (sender),
 346                                         empathy_message_get_body (message));
 347                 empathy_chat_text_view_append_body (EMPATHY_CHAT_TEXT_VIEW (view),
 348                                                     body,
 349                                                     EMPATHY_CHAT_TEXT_VIEW_TAG_ACTION);
 350         } else {
 351                 empathy_chat_text_view_append_body (EMPATHY_CHAT_TEXT_VIEW (view),
 352                                                     empathy_message_get_body (message),
 353                                                     EMPATHY_CHAT_TEXT_VIEW_TAG_BODY);
 354         }
 355 }
 356
 357 static void
 358 theme_boxes_notify_show_avatars_cb (EmpathyConf *conf,
 359                                     const gchar *key,
 360                                     gpointer     user_data)
 361 {
 362         EmpathyThemeBoxesPriv *priv = GET_PRIV (user_data);
 363
 364         empathy_conf_get_bool (conf, key, &priv->show_avatars);
 365 }
 366
 367 static void
 368 theme_boxes_finalize (GObject *object)
 369 {
 370         EmpathyThemeBoxesPriv *priv = GET_PRIV (object);
 371
 372         empathy_conf_notify_remove (empathy_conf_get (),
 373                                     priv->notify_show_avatars_id);
 374
 375         G_OBJECT_CLASS (empathy_theme_boxes_parent_class)->finalize (object);
 376 }
 377
 378 static void
 379 empathy_theme_boxes_class_init (EmpathyThemeBoxesClass *class)
 380 {
 381         GObjectClass             *object_class;
 382         EmpathyChatTextViewClass *chat_text_view_class;
 383
 384         object_class = G_OBJECT_CLASS (class);
 385         chat_text_view_class  = EMPATHY_CHAT_TEXT_VIEW_CLASS (class);
 386
 387         object_class->finalize = theme_boxes_finalize;
 388         chat_text_view_class->append_message = theme_boxes_append_message;
 389
 390         g_type_class_add_private (object_class, sizeof (EmpathyThemeBoxesPriv));
 391 }
 392
 393 static void
 394 empathy_theme_boxes_init (EmpathyThemeBoxes *theme)
 395 {
 396         EmpathyThemeBoxesPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (theme,
 397                 EMPATHY_TYPE_THEME_BOXES, EmpathyThemeBoxesPriv);
 398
 399         theme->priv = priv;
 400
 401         theme_boxes_create_tags (theme);
 402
 403         priv->notify_show_avatars_id =
 404                 empathy_conf_notify_add (empathy_conf_get (),
 405                                          EMPATHY_PREFS_UI_SHOW_AVATARS,
 406                                          theme_boxes_notify_show_avatars_cb,
 407                                          theme);
 408
 409         empathy_conf_get_bool (empathy_conf_get (),
 410                                EMPATHY_PREFS_UI_SHOW_AVATARS,
 411                                &priv->show_avatars);
 412
 413         /* Define margin */
 414         g_object_set (theme,
 415                       "left-margin", MARGIN,
 416                       "right-margin", MARGIN,
 417                       NULL);
 418 }
 419
 420 EmpathyThemeBoxes *
 421 empathy_theme_boxes_new (void)
 422 {
 423         return g_object_new (EMPATHY_TYPE_THEME_BOXES,
 424                              "only-if-date", TRUE,
 425                              NULL);
 426 }
 427