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., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, 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
 203         contact = empathy_message_get_sender (msg);
 204         name = empathy_contact_get_name (contact);
 205         last_contact = empathy_chat_text_view_get_last_contact (view);
 206         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (theme));
 207
 208         DEBUG ("Maybe add fancy header");
 209
 210         /* Only insert a header if the previously inserted block is not the same
 211          * as this one. This catches all the different cases:
 212          */
 213         if (last_contact && empathy_contact_equal (last_contact, contact)) {
 214                 return;
 215         }
 216
 217         empathy_chat_text_view_append_spacing (view);
 218
 219         /* Insert header line */
 220         gtk_text_buffer_get_end_iter (buffer, &iter);
 221         gtk_text_buffer_insert_with_tags_by_name (buffer,
 222                                                   &iter,
 223                                                   "\n",
 224                                                   -1,
 225                                                   EMPATHY_THEME_BOXES_TAG_HEADER_LINE,
 226                                                   NULL);
 227
 228         gtk_text_buffer_get_end_iter (buffer, &iter);
 229         anchor = gtk_text_buffer_create_child_anchor (buffer, &iter);
 230
 231         /* Create a hbox for the header and resize it when the view allocation
 232          * changes */
 233         box = gtk_hbox_new (FALSE, 0);
 234         g_signal_connect_object (view, "size-allocate",
 235                                  G_CALLBACK (table_size_allocate_cb),
 236                                  box, 0);
 237
 238         /* Add avatar to the box if needed */
 239         if (priv->show_avatars) {
 240                 avatar = theme_boxes_get_avatar_pixbuf_with_cache (contact);
 241                 if (avatar) {
 242                         GtkWidget *image;
 243
 244                         image = gtk_image_new_from_pixbuf (avatar);
 245
 246                         gtk_box_pack_start (GTK_BOX (box), image,
 247                                             FALSE, TRUE, 2);
 248                 }
 249         }
 250
 251         /* Add contact alias */
 252         str = g_markup_printf_escaped ("<b>%s</b>", name);
 253         label1 = g_object_new (GTK_TYPE_LABEL,
 254                                "label", str,
 255                                "use-markup", TRUE,
 256                                "xalign", 0.0,
 257                                NULL);
 258         g_free (str);
 259
 260         /* Add the message receive time */
 261         time = empathy_message_get_timestamp (msg);
 262         tmp = empathy_time_to_string_local (time,
 263                                            EMPATHY_TIME_FORMAT_DISPLAY_SHORT);
 264         str = g_strdup_printf ("<i>%s</i>", tmp);
 265         label2 = g_object_new (GTK_TYPE_LABEL,
 266                                "label", str,
 267                                "use-markup", TRUE,
 268                                "xalign", 1.0,
 269                                NULL);
 270         g_free (tmp);
 271         g_free (str);
 272
 273         /* Set foreground color of labels to the same color than the header tag. */
 274         table = gtk_text_buffer_get_tag_table (buffer);
 275         tag = gtk_text_tag_table_lookup (table, EMPATHY_THEME_BOXES_TAG_HEADER);
 276         g_object_get (tag, "foreground-set", &color_set, NULL);
 277         if (color_set) {
 278                 GdkColor *color;
 279
 280                 g_object_get (tag, "foreground-gdk", &color, NULL);
 281                 gtk_widget_modify_fg (label1, GTK_STATE_NORMAL, color);
 282                 gtk_widget_modify_fg (label2, GTK_STATE_NORMAL, color);
 283                 gdk_color_free (color);
 284         }
 285
 286         /* Pack labels into the box */
 287         gtk_misc_set_alignment (GTK_MISC (label1), 0.0, 0.5);
 288         gtk_misc_set_alignment (GTK_MISC (label2), 1.0, 0.5);
 289         gtk_box_pack_start (GTK_BOX (box), label1, TRUE, TRUE, 0);
 290         gtk_box_pack_start (GTK_BOX (box), label2, TRUE, TRUE, 0);
 291
 292         /* Add the header box to the text view */
 293         gtk_text_view_add_child_at_anchor (GTK_TEXT_VIEW (view),
 294                                            box,
 295                                            anchor);
 296         gtk_widget_show_all (box);
 297
 298         /* Insert a header line */
 299         gtk_text_buffer_get_end_iter (buffer, &iter);
 300         start = iter;
 301         gtk_text_iter_backward_char (&start);
 302         gtk_text_buffer_apply_tag_by_name (buffer,
 303                                            EMPATHY_THEME_BOXES_TAG_HEADER,
 304                                            &start, &iter);
 305         gtk_text_buffer_insert_with_tags_by_name (buffer,
 306                                                   &iter,
 307                                                   "\n",
 308                                                   -1,
 309                                                   EMPATHY_THEME_BOXES_TAG_HEADER,
 310                                                   NULL);
 311         gtk_text_buffer_get_end_iter (buffer, &iter);
 312         gtk_text_buffer_insert_with_tags_by_name (buffer,
 313                                                   &iter,
 314                                                   "\n",
 315                                                   -1,
 316                                                   EMPATHY_THEME_BOXES_TAG_HEADER_LINE,
 317                                                   NULL);
 318 }
 319
 320 static void
 321 theme_boxes_append_message (EmpathyChatTextView *view,
 322                             EmpathyMessage      *message)
 323 {
 324         EmpathyContact *sender;
 325
 326         theme_boxes_maybe_append_header (EMPATHY_THEME_BOXES (view), message);
 327
 328         sender = empathy_message_get_sender (message);
 329         if (empathy_message_get_tptype (message) ==
 330             TP_CHANNEL_TEXT_MESSAGE_TYPE_ACTION) {
 331                 gchar *body;
 332
 333                 body = g_strdup_printf (" * %s %s",
 334                                         empathy_contact_get_name (sender),
 335                                         empathy_message_get_body (message));
 336                 empathy_chat_text_view_append_body (EMPATHY_CHAT_TEXT_VIEW (view),
 337                                                     body,
 338                                                     EMPATHY_CHAT_TEXT_VIEW_TAG_ACTION);
 339         } else {
 340                 empathy_chat_text_view_append_body (EMPATHY_CHAT_TEXT_VIEW (view),
 341                                                     empathy_message_get_body (message),
 342                                                     EMPATHY_CHAT_TEXT_VIEW_TAG_BODY);
 343         }
 344 }
 345
 346 static void
 347 theme_boxes_notify_show_avatars_cb (EmpathyConf *conf,
 348                                     const gchar *key,
 349                                     gpointer     user_data)
 350 {
 351         EmpathyThemeBoxesPriv *priv = GET_PRIV (user_data);
 352
 353         empathy_conf_get_bool (conf, key, &priv->show_avatars);
 354 }
 355
 356 static void
 357 theme_boxes_finalize (GObject *object)
 358 {
 359         EmpathyThemeBoxesPriv *priv = GET_PRIV (object);
 360
 361         empathy_conf_notify_remove (empathy_conf_get (),
 362                                     priv->notify_show_avatars_id);
 363
 364         G_OBJECT_CLASS (empathy_theme_boxes_parent_class)->finalize (object);
 365 }
 366
 367 static void
 368 empathy_theme_boxes_class_init (EmpathyThemeBoxesClass *class)
 369 {
 370         GObjectClass             *object_class;
 371         EmpathyChatTextViewClass *chat_text_view_class;
 372
 373         object_class = G_OBJECT_CLASS (class);
 374         chat_text_view_class  = EMPATHY_CHAT_TEXT_VIEW_CLASS (class);
 375
 376         object_class->finalize = theme_boxes_finalize;
 377         chat_text_view_class->append_message = theme_boxes_append_message;
 378
 379         g_type_class_add_private (object_class, sizeof (EmpathyThemeBoxesPriv));
 380 }
 381
 382 static void
 383 empathy_theme_boxes_init (EmpathyThemeBoxes *theme)
 384 {
 385         EmpathyThemeBoxesPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (theme,
 386                 EMPATHY_TYPE_THEME_BOXES, EmpathyThemeBoxesPriv);
 387
 388         theme->priv = priv;
 389
 390         theme_boxes_create_tags (theme);
 391
 392         priv->notify_show_avatars_id =
 393                 empathy_conf_notify_add (empathy_conf_get (),
 394                                          EMPATHY_PREFS_UI_SHOW_AVATARS,
 395                                          theme_boxes_notify_show_avatars_cb,
 396                                          theme);
 397
 398         empathy_conf_get_bool (empathy_conf_get (),
 399                                EMPATHY_PREFS_UI_SHOW_AVATARS,
 400                                &priv->show_avatars);
 401
 402         /* Define margin */
 403         g_object_set (theme,
 404                       "left-margin", MARGIN,
 405                       "right-margin", MARGIN,
 406                       NULL);
 407 }
 408
 409 EmpathyThemeBoxes *
 410 empathy_theme_boxes_new (void)
 411 {
 412         return g_object_new (EMPATHY_TYPE_THEME_BOXES,
 413                              "only-if-date", TRUE,
 414                              NULL);
 415 }
 416