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Diffstat (limited to 'libgimp/gimpgradientselect.c')
| -rw-r--r-- | libgimp/gimpgradientselect.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/libgimp/gimpgradientselect.c b/libgimp/gimpgradientselect.c new file mode 100644 index 0000000..28e5de1 --- /dev/null +++ b/libgimp/gimpgradientselect.c @@ -0,0 +1,225 @@ +/* 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; +} |