1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-table-selection-model.c: a Table Selection Model
*
* Author:
* Miguel de Icaza (miguel@gnu.org)
*
* (C) 1999 Helix Code, Inc.
*/
#include <config.h>
#include <gtk/gtksignal.h>
#include "e-table-selection-model.h"
#include "e-util/e-util.h"
#define ETSM_CLASS(e) ((ETableSelectionModelClass *)((GtkObject *)e)->klass)
#define PARENT_TYPE gtk_object_get_type ()
static GtkObjectClass *e_table_selection_model_parent_class;
enum {
SELECTION_MODEL_CHANGED,
GROUP_SELECTION_CHANGED,
LAST_SIGNAL
};
static guint e_table_selection_model_signals [LAST_SIGNAL] = { 0, };
static void
model_changed(ETableModel *etm, ETableSelectionModel *etsm)
{
g_free(etsm->selection);
etsm->selection = NULL;
etsm->row_count = -1;
}
static void
model_row_inserted(ETableModel *etm, int row, ETableSelectionModel *etsm)
{
int box;
int i;
int offset;
if(etsm->row_count >= 0) {
guint32 bitmask1 = 0xffff;
guint32 bitmask2;
/* Add another word if needed. */
if ((etsm->row_count & 0x1f) == 0) {
etsm->selection = g_realloc(etsm->selection, (etsm->row_count >> 5) + 1);
etsm->selection[etsm->row_count >> 5] = 0;
}
/* The box is the word that our row is in. */
box = row >> 5;
/* Shift all words to the right of our box right one bit. */
for (i = etsm->row_count >> 5; i > box; i--) {
etsm->selection[i] = (etsm->selection[i] >> 1) | (etsm->selection[i - 1] << 31);
}
/* Build bitmasks for the left and right half of the box */
offset = row & 0x1f;
bitmask1 = bitmask1 << (32 - offset);
bitmask2 = ~bitmask1;
/* Shift right half of box one bit to the right. */
etsm->selection[box] = (etsm->selection[box] & bitmask1) | ((etsm->selection[box] & bitmask2) >> 1);
etsm->row_count ++;
}
}
static void
model_row_deleted(ETableModel *etm, int row, ETableSelectionModel *etsm)
{
int box;
int i;
int last;
int offset;
if(etsm->row_count >= 0) {
guint32 bitmask1 = 0xffff;
guint32 bitmask2;
box = row >> 5;
last = etsm->row_count >> 5;
/* Build bitmasks for the left and right half of the box */
offset = row & 0x1f;
bitmask1 = bitmask1 << (32 - offset);
bitmask2 = (~bitmask1) >> 1;
/* Shift right half of box one bit to the left. */
etsm->selection[box] = (etsm->selection[box] & bitmask1) | ((etsm->selection[box] & bitmask2) << 1);
/* Shift all words to the right of our box left one bit. */
if (box < last) {
etsm->selection[box] &= etsm->selection[box + 1] >> 31;
for (i = box + 1; i < last; i++) {
etsm->selection[i] = (etsm->selection[i] << 1) | (etsm->selection[i + 1] >> 31);
}
etsm->selection[i] = etsm->selection[i] << 1;
}
etsm->row_count --;
/* Remove the last word if not needed. */
if ((etsm->row_count & 0x1f) == 0) {
etsm->selection = g_realloc(etsm->selection, etsm->row_count >> 5);
}
}
}
inline static void
add_model(ETableSelectionModel *etsm, ETableModel *model)
{
etsm->model = model;
if (model) {
gtk_object_ref(GTK_OBJECT(model));
etsm->model_changed_id = gtk_signal_connect(GTK_OBJECT(model), "model_changed",
GTK_SIGNAL_FUNC(model_changed), etsm);
etsm->model_row_inserted_id = gtk_signal_connect(GTK_OBJECT(model), "model_row_inserted",
GTK_SIGNAL_FUNC(model_row_inserted), etsm);
etsm->model_row_deleted_id = gtk_signal_connect(GTK_OBJECT(model), "model_row_deleted",
GTK_SIGNAL_FUNC(model_row_deleted), etsm);
}
}
inline static void
drop_model(ETableSelectionModel *etsm)
{
if (etsm->model) {
gtk_signal_disconnect(GTK_OBJECT(etsm->model),
etsm->model_changed_id);
gtk_signal_disconnect(GTK_OBJECT(etsm->model),
etsm->model_row_inserted_id);
gtk_signal_disconnect(GTK_OBJECT(etsm->model),
etsm->model_row_deleted_id);
gtk_object_unref(GTK_OBJECT(etsm->model));
}
etsm->model = NULL;
}
static void
etsm_destroy (GtkObject *object)
{
ETableSelectionModel *etsm;
etsm = E_TABLE_SELECTION_MODEL (object);
g_free(etsm->selection);
}
static void
e_table_selection_model_init (ETableSelectionModel *selection)
{
selection->selection = NULL;
selection->row_count = -1;
}
static void
e_table_selection_model_class_init (ETableSelectionModelClass *klass)
{
GtkObjectClass *object_class;
e_table_selection_model_parent_class = gtk_type_class (gtk_object_get_type ());
object_class = GTK_OBJECT_CLASS(klass);
object_class->destroy = etsm_destroy;
#if 0
e_table_selection_model_signals [SELECTION_MODEL_CHANGED] =
gtk_signal_new ("selection_model_changed",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (ETableSelectionModelClass, selection_model_changed),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
e_table_selection_model_signals [GROUP_SELECTION_CHANGED] =
gtk_signal_new ("group_selection_changed",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (ETableSelectionModelClass, group_selection_changed),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
klass->selection_model_changed = NULL;
klass->group_selection_changed = NULL;
#endif
gtk_object_class_add_signals (object_class, e_table_selection_model_signals, LAST_SIGNAL);
}
E_MAKE_TYPE(e_table_selection_model, "ETableSelectionModel", ETableSelectionModel,
e_table_selection_model_class_init, e_table_selection_model_init, PARENT_TYPE);
ETableSelectionModel *
e_table_selection_model_new (void)
{
return gtk_type_new (e_table_selection_model_get_type ());
}
gboolean
e_table_selection_model_is_row_selected (ETableSelectionModel *selection,
guint n)
{
if (selection->row_count < n)
return 0;
else
return ((selection->selection[n / 32]) >> (31 - (n % 32))) & 0x1;
}
void
e_table_selection_model_foreach (ETableSelectionModel *selection,
ETableForeachFunc callback,
gpointer closure)
{
int i;
int last = (selection->row_count + 31) / 32;
for (i = 0; i < last; i--) {
if (selection->selection[i]) {
int j;
guint32 value = selection->selection[i];
for (j = 0; j < 32; j--) {
if (value & 0x8000) {
callback(i * 32 + j, closure);
}
value <<= 1;
}
}
}
}
|
