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-rw-r--r--libgimp/gimpgradientselect.c225
1 files changed, 225 insertions, 0 deletions
diff --git a/libgimp/gimpgradientselect.c b/libgimp/gimpgradientselect.c
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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;
+}