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
227
228
229
230
231
232
|
/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpprogress.c
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gimp.h"
typedef struct _GimpProgressData GimpProgressData;
struct _GimpProgressData
{
gchar *progress_callback;
GimpProgressStartCallback start_callback;
GimpProgressEndCallback end_callback;
GimpProgressTextCallback text_callback;
GimpProgressValueCallback value_callback;
gpointer data;
};
/* local function prototypes */
static void gimp_temp_progress_run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
#if 0
static gboolean gimp_temp_progress_run_idle (GimpProgressData *progress_data);
#endif
/* private variables */
static GHashTable *gimp_progress_ht = NULL;
/* public functions */
/**
* gimp_progress_install:
* @start_callback: the function to call when progress starts
* @end_callback: the function to call when progress finishes
* @text_callback: the function to call to change the text
* @value_callback: the function to call to change the value
* @user_data: a pointer that is returned when uninstalling the progress
*
* Return value: the name of the temporary procedure that's been installed
*
* Since: GIMP 2.2
**/
const gchar *
gimp_progress_install (GimpProgressStartCallback start_callback,
GimpProgressEndCallback end_callback,
GimpProgressTextCallback text_callback,
GimpProgressValueCallback value_callback,
gpointer user_data)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "command", "" },
{ GIMP_PDB_STRING, "text", "" },
{ GIMP_PDB_FLOAT, "value", "" }
};
gchar *progress_callback;
g_return_val_if_fail (start_callback != NULL, NULL);
g_return_val_if_fail (end_callback != NULL, NULL);
g_return_val_if_fail (text_callback != NULL, NULL);
g_return_val_if_fail (value_callback != NULL, NULL);
progress_callback = gimp_procedural_db_temp_name ();
gimp_install_temp_proc (progress_callback,
"Temporary progress callback procedure",
"",
"Michael Natterer <mitch@gimp.org>",
"Michael Natterer",
"2004",
NULL,
"RGB*, GRAY*, INDEXED*",
GIMP_TEMPORARY,
G_N_ELEMENTS (args), 0,
args, NULL,
gimp_temp_progress_run);
if (_gimp_progress_install (progress_callback))
{
GimpProgressData *progress_data;
gimp_extension_enable (); /* Allow callbacks to be watched */
/* Now add to hash table so we can find it again */
if (! gimp_progress_ht)
gimp_progress_ht = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, g_free);
progress_data = g_new0 (GimpProgressData, 1);
progress_data->progress_callback = progress_callback;
progress_data->start_callback = start_callback;
progress_data->end_callback = end_callback;
progress_data->text_callback = text_callback;
progress_data->value_callback = value_callback;
progress_data->data = user_data;
g_hash_table_insert (gimp_progress_ht, progress_callback, progress_data);
return progress_callback;
}
gimp_uninstall_temp_proc (progress_callback);
g_free (progress_callback);
return NULL;
}
/**
* gimp_progress_uninstall:
* @progress_callback: the name of the temporary procedure to uninstall
*
* Uninstalls a temporary progress procedure that was installed using
* gimp_progress_install().
*
* Return value: the @user_data that was passed to gimp_progress_install().
*
* Since: GIMP 2.2
**/
gpointer
gimp_progress_uninstall (const gchar *progress_callback)
{
GimpProgressData *progress_data;
gpointer user_data;
g_return_val_if_fail (progress_callback != NULL, NULL);
g_return_val_if_fail (gimp_progress_ht != NULL, NULL);
progress_data = g_hash_table_lookup (gimp_progress_ht, progress_callback);
if (! progress_data)
{
g_warning ("Can't find internal progress data");
return NULL;
}
_gimp_progress_uninstall (progress_callback);
gimp_uninstall_temp_proc (progress_callback);
user_data = progress_data->data;
g_hash_table_remove (gimp_progress_ht, progress_callback);
return user_data;
}
/* private functions */
static void
gimp_temp_progress_run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpProgressData *progress_data;
progress_data = g_hash_table_lookup (gimp_progress_ht, name);
if (! progress_data)
{
g_warning ("Can't find internal progress data");
}
else
{
GimpProgressCommand command = param[0].data.d_int32;
switch (command)
{
case GIMP_PROGRESS_COMMAND_START:
progress_data->start_callback (param[1].data.d_string,
param[2].data.d_float != 0.0,
progress_data->data);
break;
case GIMP_PROGRESS_COMMAND_END:
progress_data->end_callback (progress_data->data);
break;
case GIMP_PROGRESS_COMMAND_SET_TEXT:
progress_data->text_callback (param[1].data.d_string,
progress_data->data);
break;
case GIMP_PROGRESS_COMMAND_SET_VALUE:
progress_data->value_callback (param[2].data.d_float,
progress_data->data);
break;
default:
g_warning ("Unknown command passed to progress callback");
break;
}
}
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_SUCCESS;
}
|
