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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpgradientselect.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 3 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, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gimp.h"
typedef struct
{
gchar *gradient_callback;
guint idle_id;
gchar *gradient_name;
gint width;
gdouble *gradient_data;
GimpRunGradientCallback callback;
gboolean closing;
gpointer data;
} GimpGradientData;
/* local function prototypes */
static void gimp_gradient_data_free (GimpGradientData *data);
static void gimp_temp_gradient_run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gboolean gimp_temp_gradient_run_idle (GimpGradientData *gradient_data);
/* private variables */
static GHashTable *gimp_gradient_select_ht = NULL;
/* public functions */
const gchar *
gimp_gradient_select_new (const gchar *title,
const gchar *gradient_name,
gint sample_size,
GimpRunGradientCallback callback,
gpointer data)
{
static const GimpParamDef args[] =
{
{ GIMP_PDB_STRING, "str", "String" },
{ GIMP_PDB_INT32, "gradient-width", "Gradient width" },
{ GIMP_PDB_FLOATARRAY,"gradient-data", "The gradient mask data" },
{ GIMP_PDB_INT32, "dialog-status", "If the dialog was closing "
"[0 = No, 1 = Yes]" }
};
gchar *gradient_callback = gimp_procedural_db_temp_name ();
gimp_install_temp_proc (gradient_callback,
"Temporary gradient popup callback procedure",
"",
"",
"",
"",
NULL,
"",
GIMP_TEMPORARY,
G_N_ELEMENTS (args), 0,
args, NULL,
gimp_temp_gradient_run);
if (gimp_gradients_popup (gradient_callback, title, gradient_name,
sample_size))
{
GimpGradientData *gradient_data;
gimp_extension_enable (); /* Allow callbacks to be watched */
/* Now add to hash table so we can find it again */
if (! gimp_gradient_select_ht)
{
gimp_gradient_select_ht =
g_hash_table_new_full (g_str_hash, g_str_equal,
g_free,
(GDestroyNotify) gimp_gradient_data_free);
}
gradient_data = g_slice_new0 (GimpGradientData);
gradient_data->gradient_callback = gradient_callback;
gradient_data->callback = callback;
gradient_data->data = data;
g_hash_table_insert (gimp_gradient_select_ht,
gradient_callback, gradient_data);
return gradient_callback;
}
gimp_uninstall_temp_proc (gradient_callback);
g_free (gradient_callback);
return NULL;
}
void
gimp_gradient_select_destroy (const gchar *gradient_callback)
{
GimpGradientData *gradient_data;
g_return_if_fail (gradient_callback != NULL);
g_return_if_fail (gimp_gradient_select_ht != NULL);
gradient_data = g_hash_table_lookup (gimp_gradient_select_ht,
gradient_callback);
if (! gradient_data)
{
g_warning ("Can't find internal gradient data");
return;
}
if (gradient_data->idle_id)
g_source_remove (gradient_data->idle_id);
g_free (gradient_data->gradient_name);
g_free (gradient_data->gradient_data);
if (gradient_data->gradient_callback)
gimp_gradients_close_popup (gradient_data->gradient_callback);
gimp_uninstall_temp_proc (gradient_callback);
g_hash_table_remove (gimp_gradient_select_ht, gradient_callback);
}
/* private functions */
static void
gimp_gradient_data_free (GimpGradientData *data)
{
g_slice_free (GimpGradientData, data);
}
static void
gimp_temp_gradient_run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpGradientData *gradient_data;
gradient_data = g_hash_table_lookup (gimp_gradient_select_ht, name);
if (! gradient_data)
{
g_warning ("Can't find internal gradient data");
}
else
{
g_free (gradient_data->gradient_name);
g_free (gradient_data->gradient_data);
gradient_data->gradient_name = g_strdup (param[0].data.d_string);
gradient_data->width = param[1].data.d_int32;
gradient_data->gradient_data = g_memdup (param[2].data.d_floatarray,
param[1].data.d_int32 *
sizeof (gdouble));
gradient_data->closing = param[3].data.d_int32;
if (! gradient_data->idle_id)
gradient_data->idle_id =
g_idle_add ((GSourceFunc) gimp_temp_gradient_run_idle,
gradient_data);
}
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_SUCCESS;
}
static gboolean
gimp_temp_gradient_run_idle (GimpGradientData *gradient_data)
{
gradient_data->idle_id = 0;
if (gradient_data->callback)
gradient_data->callback (gradient_data->gradient_name,
gradient_data->width,
gradient_data->gradient_data,
gradient_data->closing,
gradient_data->data);
if (gradient_data->closing)
{
gchar *gradient_callback = gradient_data->gradient_callback;
gradient_data->gradient_callback = NULL;
gimp_gradient_select_destroy (gradient_callback);
}
return FALSE;
}
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