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Viewing changes to libempathy-gtk/gossip-cell-renderer-text.c

  • Committer: Bazaar Package Importer
  • Author(s): Sjoerd Simons
  • Date: 2007-05-20 15:31:42 UTC
  • Revision ID: james.westby@ubuntu.com-20070520153142-r3auwguxdgxhktqb
Tags: upstream-0.4
Import upstream version 0.4

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libempathy-gtk/gossip-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., 59 Temple Place - Suite 330,
 
18
 * Boston, MA 02111-1307, USA.
 
19
 * 
 
20
 * Authors: Mikael Hallendal <micke@imendio.com>
 
21
 */
 
22
 
 
23
#include "config.h"
 
24
 
 
25
#include <string.h>
 
26
 
 
27
#include "gossip-cell-renderer-text.h"
 
28
 
 
29
#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GOSSIP_TYPE_CELL_RENDERER_TEXT, GossipCellRendererTextPriv))
 
30
 
 
31
struct _GossipCellRendererTextPriv {
 
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
};
 
41
 
 
42
static void gossip_cell_renderer_text_class_init (GossipCellRendererTextClass *klass);
 
43
static void gossip_cell_renderer_text_init       (GossipCellRendererText      *cell);
 
44
static void cell_renderer_text_finalize          (GObject                     *object);
 
45
static void cell_renderer_text_get_property      (GObject                     *object,
 
46
                                                  guint                        param_id,
 
47
                                                  GValue                      *value,
 
48
                                                  GParamSpec                  *pspec);
 
49
static void cell_renderer_text_set_property      (GObject                     *object,
 
50
                                                  guint                        param_id,
 
51
                                                  const GValue                *value,
 
52
                                                  GParamSpec                  *pspec);
 
53
static void cell_renderer_text_get_size          (GtkCellRenderer             *cell,
 
54
                                                  GtkWidget                   *widget,
 
55
                                                  GdkRectangle                *cell_area,
 
56
                                                  gint                        *x_offset,
 
57
                                                  gint                        *y_offset,
 
58
                                                  gint                        *width,
 
59
                                                  gint                        *height);
 
60
static void cell_renderer_text_render            (GtkCellRenderer             *cell,
 
61
                                                  GdkDrawable                 *window,
 
62
                                                  GtkWidget                   *widget,
 
63
                                                  GdkRectangle                *background_area,
 
64
                                                  GdkRectangle                *cell_area,
 
65
                                                  GdkRectangle                *expose_area,
 
66
                                                  GtkCellRendererState         flags);
 
67
static void cell_renderer_text_update_text       (GossipCellRendererText      *cell,
 
68
                                                  GtkWidget                   *widget,
 
69
                                                  gboolean                     selected);
 
70
 
 
71
/* Properties */
 
72
enum {
 
73
        PROP_0,
 
74
        PROP_NAME,
 
75
        PROP_STATUS,
 
76
        PROP_IS_GROUP,
 
77
        PROP_SHOW_STATUS,
 
78
};
 
79
 
 
80
G_DEFINE_TYPE (GossipCellRendererText, gossip_cell_renderer_text, GTK_TYPE_CELL_RENDERER_TEXT);
 
81
 
 
82
static void
 
83
gossip_cell_renderer_text_class_init (GossipCellRendererTextClass *klass)
 
84
{
 
85
        GObjectClass         *object_class;
 
86
        GtkCellRendererClass *cell_class;
 
87
 
 
88
        object_class = G_OBJECT_CLASS (klass);
 
89
        cell_class = GTK_CELL_RENDERER_CLASS (klass);
 
90
 
 
91
        object_class->finalize = cell_renderer_text_finalize;
 
92
 
 
93
        object_class->get_property = cell_renderer_text_get_property;
 
94
        object_class->set_property = cell_renderer_text_set_property;
 
95
 
 
96
        cell_class->get_size = cell_renderer_text_get_size;
 
97
        cell_class->render = cell_renderer_text_render;
 
98
 
 
99
        g_object_class_install_property (object_class,
 
100
                                         PROP_NAME,
 
101
                                         g_param_spec_string ("name",
 
102
                                                              "Name",
 
103
                                                              "Contact name",
 
104
                                                              NULL,
 
105
                                                              G_PARAM_READWRITE));
 
106
        g_object_class_install_property (object_class,
 
107
                                         PROP_STATUS,
 
108
                                         g_param_spec_string ("status",
 
109
                                                              "Status",
 
110
                                                              "Contact status string",
 
111
                                                              NULL,
 
112
                                                              G_PARAM_READWRITE));
 
113
        g_object_class_install_property (object_class,
 
114
                                         PROP_IS_GROUP,
 
115
                                         g_param_spec_boolean ("is_group",
 
116
                                                               "Is group",
 
117
                                                               "Whether this cell is a group",
 
118
                                                               FALSE,
 
119
                                                               G_PARAM_READWRITE));
 
120
        g_object_class_install_property (object_class,
 
121
                                         PROP_SHOW_STATUS,
 
122
                                         g_param_spec_boolean ("show-status",
 
123
                                                               "Show status",
 
124
                                                               "Whether to show the status line",
 
125
                                                               TRUE,
 
126
                                                               G_PARAM_READWRITE));
 
127
 
 
128
        g_type_class_add_private (object_class, sizeof (GossipCellRendererTextPriv));
 
129
}
 
130
 
 
131
static void
 
132
gossip_cell_renderer_text_init (GossipCellRendererText *cell)
 
133
{
 
134
        GossipCellRendererTextPriv *priv;
 
135
 
 
136
        priv = GET_PRIV (cell);
 
137
 
 
138
        g_object_set (cell,
 
139
                      "ellipsize", PANGO_ELLIPSIZE_END,
 
140
                      NULL);
 
141
 
 
142
        priv->name = g_strdup ("");
 
143
        priv->status = g_strdup ("");
 
144
        priv->show_status = TRUE;
 
145
}
 
146
 
 
147
static void
 
148
cell_renderer_text_finalize (GObject *object)
 
149
{
 
150
        GossipCellRendererText     *cell;
 
151
        GossipCellRendererTextPriv *priv;
 
152
 
 
153
        cell = GOSSIP_CELL_RENDERER_TEXT (object);
 
154
        priv = GET_PRIV (cell);
 
155
 
 
156
        g_free (priv->name);
 
157
        g_free (priv->status);
 
158
 
 
159
        (G_OBJECT_CLASS (gossip_cell_renderer_text_parent_class)->finalize) (object);
 
160
}
 
161
 
 
162
static void
 
163
cell_renderer_text_get_property (GObject    *object,
 
164
                                 guint       param_id,
 
165
                                 GValue     *value,
 
166
                                 GParamSpec *pspec)
 
167
{
 
168
        GossipCellRendererText     *cell;
 
169
        GossipCellRendererTextPriv *priv;
 
170
 
 
171
        cell = GOSSIP_CELL_RENDERER_TEXT (object);
 
172
        priv = GET_PRIV (cell);
 
173
 
 
174
        switch (param_id) {
 
175
        case PROP_NAME:
 
176
                g_value_set_string (value, priv->name);
 
177
                break;
 
178
        case PROP_STATUS:
 
179
                g_value_set_string (value, priv->status);
 
180
                break;
 
181
        case PROP_IS_GROUP:
 
182
                g_value_set_boolean (value, priv->is_group);
 
183
                break;
 
184
        case PROP_SHOW_STATUS:
 
185
                g_value_set_boolean (value, priv->show_status);
 
186
                break;
 
187
        default:
 
188
                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 
189
                break;
 
190
        }
 
191
}
 
192
 
 
193
static void
 
194
cell_renderer_text_set_property (GObject      *object,
 
195
                                 guint         param_id,
 
196
                                 const GValue *value,
 
197
                                 GParamSpec   *pspec)
 
198
{
 
199
        GossipCellRendererText     *cell;
 
200
        GossipCellRendererTextPriv *priv;
 
201
        const gchar                *str;
 
202
 
 
203
        cell = GOSSIP_CELL_RENDERER_TEXT (object);
 
204
        priv = GET_PRIV (cell);
 
205
 
 
206
        switch (param_id) {
 
207
        case PROP_NAME:
 
208
                g_free (priv->name);
 
209
                str = g_value_get_string (value);
 
210
                priv->name = g_strdup (str ? str : "");
 
211
                g_strdelimit (priv->name, "\n\r\t", ' ');
 
212
                priv->is_valid = FALSE;
 
213
                break;
 
214
        case PROP_STATUS:
 
215
                g_free (priv->status);
 
216
                str = g_value_get_string (value);
 
217
                priv->status = g_strdup (str ? str : "");
 
218
                g_strdelimit (priv->status, "\n\r\t", ' ');
 
219
                priv->is_valid = FALSE;
 
220
                break;
 
221
        case PROP_IS_GROUP:
 
222
                priv->is_group = g_value_get_boolean (value);
 
223
                priv->is_valid = FALSE;
 
224
                break;
 
225
        case PROP_SHOW_STATUS:
 
226
                priv->show_status = g_value_get_boolean (value);
 
227
                priv->is_valid = FALSE;
 
228
                break;
 
229
        default:
 
230
                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 
231
                break;
 
232
        }
 
233
}
 
234
 
 
235
static void
 
236
cell_renderer_text_get_size (GtkCellRenderer *cell,
 
237
                             GtkWidget       *widget,
 
238
                             GdkRectangle    *cell_area,
 
239
                             gint            *x_offset,
 
240
                             gint            *y_offset,
 
241
                             gint            *width,
 
242
                             gint            *height)
 
243
{
 
244
        GossipCellRendererText     *celltext;
 
245
        GossipCellRendererTextPriv *priv;
 
246
 
 
247
        celltext = GOSSIP_CELL_RENDERER_TEXT (cell);
 
248
        priv = GET_PRIV (cell);
 
249
 
 
250
        /* Only update if not already valid so we get the right size. */
 
251
        cell_renderer_text_update_text (celltext, widget, priv->is_selected);
 
252
 
 
253
        (GTK_CELL_RENDERER_CLASS (gossip_cell_renderer_text_parent_class)->get_size) (cell, widget,
 
254
                                                                                      cell_area,
 
255
                                                                                      x_offset, y_offset,
 
256
                                                                                      width, height);
 
257
}
 
258
 
 
259
static void
 
260
cell_renderer_text_render (GtkCellRenderer      *cell,
 
261
                           GdkWindow            *window,
 
262
                           GtkWidget            *widget,
 
263
                           GdkRectangle         *background_area,
 
264
                           GdkRectangle         *cell_area,
 
265
                           GdkRectangle         *expose_area,
 
266
                           GtkCellRendererState  flags)
 
267
{
 
268
        GossipCellRendererText *celltext;
 
269
 
 
270
        celltext = GOSSIP_CELL_RENDERER_TEXT (cell);
 
271
 
 
272
        cell_renderer_text_update_text (celltext,
 
273
                                        widget,
 
274
                                        (flags & GTK_CELL_RENDERER_SELECTED));
 
275
 
 
276
        (GTK_CELL_RENDERER_CLASS (gossip_cell_renderer_text_parent_class)->render) (
 
277
                cell, window,
 
278
                widget,
 
279
                background_area,
 
280
                cell_area,
 
281
                expose_area, flags);
 
282
}
 
283
 
 
284
static void
 
285
cell_renderer_text_update_text (GossipCellRendererText *cell,
 
286
                                GtkWidget              *widget,
 
287
                                gboolean                selected)
 
288
{
 
289
        GossipCellRendererTextPriv *priv;
 
290
        PangoAttrList              *attr_list;
 
291
        PangoAttribute             *attr_color, *attr_style, *attr_size;
 
292
        GtkStyle                   *style;
 
293
        gchar                      *str;
 
294
 
 
295
        priv = GET_PRIV (cell);
 
296
 
 
297
        if (priv->is_valid && priv->is_selected == selected) {
 
298
                return;
 
299
        }
 
300
 
 
301
        if (priv->is_group) {
 
302
                g_object_set (cell,
 
303
                              "visible", TRUE,
 
304
                              "weight", PANGO_WEIGHT_BOLD,
 
305
                              "text", priv->name,
 
306
                              "attributes", NULL,
 
307
                              "xpad", 1,
 
308
                              "ypad", 1,
 
309
                              NULL);
 
310
 
 
311
                priv->is_selected = selected;
 
312
                priv->is_valid = TRUE;
 
313
                return;
 
314
        }
 
315
 
 
316
        style = gtk_widget_get_style (widget);
 
317
 
 
318
        attr_list = pango_attr_list_new ();
 
319
 
 
320
        attr_style = pango_attr_style_new (PANGO_STYLE_ITALIC);
 
321
        attr_style->start_index = strlen (priv->name) + 1;
 
322
        attr_style->end_index = -1;
 
323
        pango_attr_list_insert (attr_list, attr_style);
 
324
 
 
325
        if (!selected) {
 
326
                GdkColor color;
 
327
 
 
328
                color = style->text_aa[GTK_STATE_NORMAL];
 
329
 
 
330
                attr_color = pango_attr_foreground_new (color.red, color.green, color.blue);
 
331
                attr_color->start_index = attr_style->start_index;
 
332
                attr_color->end_index = -1;
 
333
                pango_attr_list_insert (attr_list, attr_color);
 
334
        }
 
335
 
 
336
        attr_size = pango_attr_size_new (pango_font_description_get_size (style->font_desc) / 1.2);
 
337
 
 
338
        attr_size->start_index = attr_style->start_index;
 
339
        attr_size->end_index = -1;
 
340
        pango_attr_list_insert (attr_list, attr_size);
 
341
 
 
342
        if (!priv->status || !priv->status[0] || !priv->show_status) {
 
343
                str = g_strdup (priv->name);
 
344
        } else {
 
345
                str = g_strdup_printf ("%s\n%s", priv->name, priv->status);
 
346
        }
 
347
 
 
348
        g_object_set (cell,
 
349
                      "visible", TRUE,
 
350
                      "weight", PANGO_WEIGHT_NORMAL,
 
351
                      "text", str,
 
352
                      "attributes", attr_list,
 
353
                      "xpad", 0,
 
354
                      "ypad", 1,
 
355
                      NULL);
 
356
 
 
357
        g_free (str);
 
358
        pango_attr_list_unref (attr_list);
 
359
 
 
360
        priv->is_selected = selected;
 
361
        priv->is_valid = TRUE;
 
362
}
 
363
 
 
364
GtkCellRenderer *
 
365
gossip_cell_renderer_text_new (void)
 
366
{
 
367
        return g_object_new (GOSSIP_TYPE_CELL_RENDERER_TEXT, NULL);
 
368
}