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Diffstat (limited to 'libgimp/gimppaletteselect.c')
| -rw-r--r-- | libgimp/gimppaletteselect.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/libgimp/gimppaletteselect.c b/libgimp/gimppaletteselect.c new file mode 100644 index 0000000..c6ddaaf --- /dev/null +++ b/libgimp/gimppaletteselect.c @@ -0,0 +1,212 @@ +/* LIBGIMP - The GIMP Library + * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball + * + * gimppaletteselect.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 *palette_callback; + guint idle_id; + gchar *palette_name; + gint num_colors; + GimpRunPaletteCallback callback; + gboolean closing; + gpointer data; +} GimpPaletteData; + + +/* local function prototypes */ + +static void gimp_palette_data_free (GimpPaletteData *data); + +static void gimp_temp_palette_run (const gchar *name, + gint nparams, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals); +static gboolean gimp_temp_palette_run_idle (GimpPaletteData *palette_data); + + +/* private variables */ + +static GHashTable *gimp_palette_select_ht = NULL; + + +/* public functions */ + +const gchar * +gimp_palette_select_new (const gchar *title, + const gchar *palette_name, + GimpRunPaletteCallback callback, + gpointer data) +{ + static const GimpParamDef args[] = + { + { GIMP_PDB_STRING, "str", "String" }, + { GIMP_PDB_INT32, "num-colors", "Number of colors" }, + { GIMP_PDB_INT32, "dialog-status", "If the dialog was closing " + "[0 = No, 1 = Yes]" } + }; + + gchar *palette_callback = gimp_procedural_db_temp_name (); + + gimp_install_temp_proc (palette_callback, + "Temporary palette popup callback procedure", + "", + "", + "", + "", + NULL, + "", + GIMP_TEMPORARY, + G_N_ELEMENTS (args), 0, + args, NULL, + gimp_temp_palette_run); + + if (gimp_palettes_popup (palette_callback, title, palette_name)) + { + GimpPaletteData *palette_data; + + gimp_extension_enable (); /* Allow callbacks to be watched */ + + /* Now add to hash table so we can find it again */ + if (! gimp_palette_select_ht) + { + gimp_palette_select_ht = + g_hash_table_new_full (g_str_hash, g_str_equal, + g_free, + (GDestroyNotify) gimp_palette_data_free); + } + + palette_data = g_slice_new0 (GimpPaletteData); + + palette_data->palette_callback = palette_callback; + palette_data->callback = callback; + palette_data->data = data; + + g_hash_table_insert (gimp_palette_select_ht, + palette_callback, palette_data); + + return palette_callback; + } + + gimp_uninstall_temp_proc (palette_callback); + g_free (palette_callback); + + return NULL; +} + +void +gimp_palette_select_destroy (const gchar *palette_callback) +{ + GimpPaletteData *palette_data; + + g_return_if_fail (palette_callback != NULL); + g_return_if_fail (gimp_palette_select_ht != NULL); + + palette_data = g_hash_table_lookup (gimp_palette_select_ht, palette_callback); + + if (! palette_data) + { + g_warning ("Can't find internal palette data"); + return; + } + + if (palette_data->idle_id) + g_source_remove (palette_data->idle_id); + + g_free (palette_data->palette_name); + + if (palette_data->palette_callback) + gimp_palettes_close_popup (palette_data->palette_callback); + + gimp_uninstall_temp_proc (palette_callback); + + g_hash_table_remove (gimp_palette_select_ht, palette_callback); +} + + +/* private functions */ + +static void +gimp_palette_data_free (GimpPaletteData *data) +{ + g_slice_free (GimpPaletteData, data); +} + +static void +gimp_temp_palette_run (const gchar *name, + gint nparams, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals) +{ + static GimpParam values[1]; + GimpPaletteData *palette_data; + + palette_data = g_hash_table_lookup (gimp_palette_select_ht, name); + + if (! palette_data) + { + g_warning ("Can't find internal palette data"); + } + else + { + g_free (palette_data->palette_name); + + palette_data->palette_name = g_strdup (param[0].data.d_string); + palette_data->num_colors = param[1].data.d_int32; + palette_data->closing = param[2].data.d_int32; + + if (! palette_data->idle_id) + palette_data->idle_id = g_idle_add ((GSourceFunc) gimp_temp_palette_run_idle, + palette_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_palette_run_idle (GimpPaletteData *palette_data) +{ + palette_data->idle_id = 0; + + if (palette_data->callback) + palette_data->callback (palette_data->palette_name, + palette_data->closing, + palette_data->data); + + if (palette_data->closing) + { + gchar *palette_callback = palette_data->palette_callback; + + palette_data->palette_callback = NULL; + gimp_palette_select_destroy (palette_callback); + } + + return FALSE; +} |