libempathy-gtk/empathy-cell-renderer-text.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2004-2007 Imendio AB
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this program; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA  02110-1301  USA
  19  *
  20  * Authors: Mikael Hallendal <micke@imendio.com>
  21  */
  22
  23 #include "config.h"
  24
  25 #include <string.h>
  26
  27 #include <libempathy/empathy-utils.h>
  28 #include "empathy-cell-renderer-text.h"
  29
  30 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyCellRendererText)
  31 typedef struct {
  32         gchar    *name;
  33         gchar    *status;
  34         gboolean  is_group;
  35
  36         gboolean  is_valid;
  37         gboolean  is_selected;
  38
  39         gboolean  show_status;
  40 } EmpathyCellRendererTextPriv;
  41
  42 static void cell_renderer_text_finalize          (GObject                     *object);
  43 static void cell_renderer_text_get_property      (GObject                     *object,
  44                                                   guint                        param_id,
  45                                                   GValue                      *value,
  46                                                   GParamSpec                  *pspec);
  47 static void cell_renderer_text_set_property      (GObject                     *object,
  48                                                   guint                        param_id,
  49                                                   const GValue                *value,
  50                                                   GParamSpec                  *pspec);
  51 static void cell_renderer_text_get_size          (GtkCellRenderer             *cell,
  52                                                   GtkWidget                   *widget,
  53                                                   GdkRectangle                *cell_area,
  54                                                   gint                        *x_offset,
  55                                                   gint                        *y_offset,
  56                                                   gint                        *width,
  57                                                   gint                        *height);
  58 static void cell_renderer_text_render            (GtkCellRenderer             *cell,
  59                                                   GdkDrawable                 *window,
  60                                                   GtkWidget                   *widget,
  61                                                   GdkRectangle                *background_area,
  62                                                   GdkRectangle                *cell_area,
  63                                                   GdkRectangle                *expose_area,
  64                                                   GtkCellRendererState         flags);
  65 static void cell_renderer_text_update_text       (EmpathyCellRendererText      *cell,
  66                                                   GtkWidget                   *widget,
  67                                                   gboolean                     selected);
  68
  69 /* Properties */
  70 enum {
  71         PROP_0,
  72         PROP_NAME,
  73         PROP_STATUS,
  74         PROP_IS_GROUP,
  75         PROP_SHOW_STATUS,
  76 };
  77
  78 G_DEFINE_TYPE (EmpathyCellRendererText, empathy_cell_renderer_text, GTK_TYPE_CELL_RENDERER_TEXT);
  79
  80 static void
  81 empathy_cell_renderer_text_class_init (EmpathyCellRendererTextClass *klass)
  82 {
  83         GObjectClass         *object_class;
  84         GtkCellRendererClass *cell_class;
  85
  86         object_class = G_OBJECT_CLASS (klass);
  87         cell_class = GTK_CELL_RENDERER_CLASS (klass);
  88
  89         object_class->finalize = cell_renderer_text_finalize;
  90
  91         object_class->get_property = cell_renderer_text_get_property;
  92         object_class->set_property = cell_renderer_text_set_property;
  93
  94         cell_class->get_size = cell_renderer_text_get_size;
  95         cell_class->render = cell_renderer_text_render;
  96
  97         g_object_class_install_property (object_class,
  98                                          PROP_NAME,
  99                                          g_param_spec_string ("name",
 100                                                               "Name",
 101                                                               "Contact name",
 102                                                               NULL,
 103                                                               G_PARAM_READWRITE));
 104         g_object_class_install_property (object_class,
 105                                          PROP_STATUS,
 106                                          g_param_spec_string ("status",
 107                                                               "Status",
 108                                                               "Contact status string",
 109                                                               NULL,
 110                                                               G_PARAM_READWRITE));
 111         g_object_class_install_property (object_class,
 112                                          PROP_IS_GROUP,
 113                                          g_param_spec_boolean ("is_group",
 114                                                                "Is group",
 115                                                                "Whether this cell is a group",
 116                                                                FALSE,
 117                                                                G_PARAM_READWRITE));
 118         g_object_class_install_property (object_class,
 119                                          PROP_SHOW_STATUS,
 120                                          g_param_spec_boolean ("show-status",
 121                                                                "Show status",
 122                                                                "Whether to show the status line",
 123                                                                TRUE,
 124                                                                G_PARAM_READWRITE));
 125
 126         g_type_class_add_private (object_class, sizeof (EmpathyCellRendererTextPriv));
 127 }
 128
 129 static void
 130 empathy_cell_renderer_text_init (EmpathyCellRendererText *cell)
 131 {
 132         EmpathyCellRendererTextPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (cell,
 133                 EMPATHY_TYPE_CELL_RENDERER_TEXT, EmpathyCellRendererTextPriv);
 134
 135         cell->priv = priv;
 136         g_object_set (cell,
 137                       "ellipsize", PANGO_ELLIPSIZE_END,
 138                       NULL);
 139
 140         priv->name = g_strdup ("");
 141         priv->status = g_strdup ("");
 142         priv->show_status = TRUE;
 143 }
 144
 145 static void
 146 cell_renderer_text_finalize (GObject *object)
 147 {
 148         EmpathyCellRendererText     *cell;
 149         EmpathyCellRendererTextPriv *priv;
 150
 151         cell = EMPATHY_CELL_RENDERER_TEXT (object);
 152         priv = GET_PRIV (cell);
 153
 154         g_free (priv->name);
 155         g_free (priv->status);
 156
 157         (G_OBJECT_CLASS (empathy_cell_renderer_text_parent_class)->finalize) (object);
 158 }
 159
 160 static void
 161 cell_renderer_text_get_property (GObject    *object,
 162                                  guint       param_id,
 163                                  GValue     *value,
 164                                  GParamSpec *pspec)
 165 {
 166         EmpathyCellRendererText     *cell;
 167         EmpathyCellRendererTextPriv *priv;
 168
 169         cell = EMPATHY_CELL_RENDERER_TEXT (object);
 170         priv = GET_PRIV (cell);
 171
 172         switch (param_id) {
 173         case PROP_NAME:
 174                 g_value_set_string (value, priv->name);
 175                 break;
 176         case PROP_STATUS:
 177                 g_value_set_string (value, priv->status);
 178                 break;
 179         case PROP_IS_GROUP:
 180                 g_value_set_boolean (value, priv->is_group);
 181                 break;
 182         case PROP_SHOW_STATUS:
 183                 g_value_set_boolean (value, priv->show_status);
 184                 break;
 185         default:
 186                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 187                 break;
 188         }
 189 }
 190
 191 static void
 192 cell_renderer_text_set_property (GObject      *object,
 193                                  guint         param_id,
 194                                  const GValue *value,
 195                                  GParamSpec   *pspec)
 196 {
 197         EmpathyCellRendererText     *cell;
 198         EmpathyCellRendererTextPriv *priv;
 199         const gchar                *str;
 200
 201         cell = EMPATHY_CELL_RENDERER_TEXT (object);
 202         priv = GET_PRIV (cell);
 203
 204         switch (param_id) {
 205         case PROP_NAME:
 206                 g_free (priv->name);
 207                 str = g_value_get_string (value);
 208                 priv->name = g_strdup (str ? str : "");
 209                 g_strdelimit (priv->name, "\n\r\t", ' ');
 210                 priv->is_valid = FALSE;
 211                 break;
 212         case PROP_STATUS:
 213                 g_free (priv->status);
 214                 str = g_value_get_string (value);
 215                 priv->status = g_strdup (str ? str : "");
 216                 g_strdelimit (priv->status, "\n\r\t", ' ');
 217                 priv->is_valid = FALSE;
 218                 break;
 219         case PROP_IS_GROUP:
 220                 priv->is_group = g_value_get_boolean (value);
 221                 priv->is_valid = FALSE;
 222                 break;
 223         case PROP_SHOW_STATUS:
 224                 priv->show_status = g_value_get_boolean (value);
 225                 priv->is_valid = FALSE;
 226                 break;
 227         default:
 228                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 229                 break;
 230         }
 231 }
 232
 233 static void
 234 cell_renderer_text_get_size (GtkCellRenderer *cell,
 235                              GtkWidget       *widget,
 236                              GdkRectangle    *cell_area,
 237                              gint            *x_offset,
 238                              gint            *y_offset,
 239                              gint            *width,
 240                              gint            *height)
 241 {
 242         EmpathyCellRendererText     *celltext;
 243         EmpathyCellRendererTextPriv *priv;
 244
 245         celltext = EMPATHY_CELL_RENDERER_TEXT (cell);
 246         priv = GET_PRIV (cell);
 247
 248         /* Only update if not already valid so we get the right size. */
 249         cell_renderer_text_update_text (celltext, widget, priv->is_selected);
 250
 251         (GTK_CELL_RENDERER_CLASS (empathy_cell_renderer_text_parent_class)->get_size) (cell, widget,
 252                                                                                       cell_area,
 253                                                                                       x_offset, y_offset,
 254                                                                                       width, height);
 255 }
 256
 257 static void
 258 cell_renderer_text_render (GtkCellRenderer      *cell,
 259                            GdkWindow            *window,
 260                            GtkWidget            *widget,
 261                            GdkRectangle         *background_area,
 262                            GdkRectangle         *cell_area,
 263                            GdkRectangle         *expose_area,
 264                            GtkCellRendererState  flags)
 265 {
 266         EmpathyCellRendererText *celltext;
 267
 268         celltext = EMPATHY_CELL_RENDERER_TEXT (cell);
 269
 270         cell_renderer_text_update_text (celltext,
 271                                         widget,
 272                                         (flags & GTK_CELL_RENDERER_SELECTED));
 273
 274         (GTK_CELL_RENDERER_CLASS (empathy_cell_renderer_text_parent_class)->render) (
 275                 cell, window,
 276                 widget,
 277                 background_area,
 278                 cell_area,
 279                 expose_area, flags);
 280 }
 281
 282 static void
 283 cell_renderer_text_update_text (EmpathyCellRendererText *cell,
 284                                 GtkWidget              *widget,
 285                                 gboolean                selected)
 286 {
 287         EmpathyCellRendererTextPriv *priv;
 288         PangoAttrList              *attr_list;
 289         PangoAttribute             *attr_color, *attr_size;
 290         GtkStyle                   *style;
 291         gchar                      *str;
 292
 293         priv = GET_PRIV (cell);
 294
 295         if (priv->is_valid && priv->is_selected == selected) {
 296                 return;
 297         }
 298
 299         if (priv->is_group) {
 300                 g_object_set (cell,
 301                               "visible", TRUE,
 302                               "weight", PANGO_WEIGHT_BOLD,
 303                               "text", priv->name,
 304                               "attributes", NULL,
 305                               "xpad", 1,
 306                               "ypad", 1,
 307                               NULL);
 308
 309                 priv->is_selected = selected;
 310                 priv->is_valid = TRUE;
 311                 return;
 312         }
 313
 314         style = gtk_widget_get_style (widget);
 315
 316         attr_list = pango_attr_list_new ();
 317
 318         attr_size = pango_attr_size_new (pango_font_description_get_size (style->font_desc) / 1.2);
 319         attr_size->start_index = strlen (priv->name) + 1;
 320         attr_size->end_index = -1;
 321         pango_attr_list_insert (attr_list, attr_size);
 322
 323         if (!selected) {
 324                 GdkColor color;
 325
 326                 color = style->text_aa[GTK_STATE_NORMAL];
 327
 328                 attr_color = pango_attr_foreground_new (color.red, color.green, color.blue);
 329                 attr_color->start_index = attr_size->start_index;
 330                 attr_color->end_index = -1;
 331                 pango_attr_list_insert (attr_list, attr_color);
 332         }
 333
 334         if (!priv->status || !priv->status[0] || !priv->show_status) {
 335                 str = g_strdup (priv->name);
 336         } else {
 337                 str = g_strdup_printf ("%s\n%s", priv->name, priv->status);
 338         }
 339
 340         g_object_set (cell,
 341                       "visible", TRUE,
 342                       "weight", PANGO_WEIGHT_NORMAL,
 343                       "text", str,
 344                       "attributes", attr_list,
 345                       "xpad", 0,
 346                       "ypad", 1,
 347                       NULL);
 348
 349         g_free (str);
 350         pango_attr_list_unref (attr_list);
 351
 352         priv->is_selected = selected;
 353         priv->is_valid = TRUE;
 354 }
 355
 356 GtkCellRenderer *
 357 empathy_cell_renderer_text_new (void)
 358 {
 359         return g_object_new (EMPATHY_TYPE_CELL_RENDERER_TEXT, NULL);
 360 }