415 lines
12 KiB
C
415 lines
12 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/**
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* aa.c version 1.0
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* A plugin that uses libaa (ftp://ftp.ta.jcu.cz/pub/aa) to save images as
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* ASCII.
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* NOTE: This plugin *requires* aalib 1.2 or later. Earlier versions will
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* not work.
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* Code copied from all over the PIKA source.
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* Tim Newsome <nuisance@cmu.edu>
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*/
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#include "config.h"
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#include <string.h>
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#include <aalib.h>
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#include <libpika/pika.h>
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#include <libpika/pikaui.h>
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#include "libpika/stdplugins-intl.h"
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#define SAVE_PROC "file-aa-save"
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#define PLUG_IN_BINARY "file-aa"
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typedef struct _Ascii Ascii;
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typedef struct _AsciiClass AsciiClass;
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struct _Ascii
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{
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PikaPlugIn parent_instance;
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};
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struct _AsciiClass
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{
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PikaPlugInClass parent_class;
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};
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#define ASCII_TYPE (ascii_get_type ())
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#define ASCII (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), ASCII_TYPE, Ascii))
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GType ascii_get_type (void) G_GNUC_CONST;
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static GList * ascii_query_procedures (PikaPlugIn *plug_in);
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static PikaProcedure * ascii_create_procedure (PikaPlugIn *plug_in,
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const gchar *name);
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static PikaValueArray * ascii_save (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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GFile *file,
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const PikaValueArray *args,
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gpointer run_data);
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static gboolean save_aa (GFile *file,
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PikaDrawable *drawable,
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GObject *config,
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GError **error);
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static void pika2aa (PikaDrawable *drawable,
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aa_context *context);
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static gboolean save_dialog (PikaProcedure *procedure,
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GObject *config,
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PikaImage *image);
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G_DEFINE_TYPE (Ascii, ascii, PIKA_TYPE_PLUG_IN)
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PIKA_MAIN (ASCII_TYPE)
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DEFINE_STD_SET_I18N
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static void
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ascii_class_init (AsciiClass *klass)
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{
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PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
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plug_in_class->query_procedures = ascii_query_procedures;
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plug_in_class->create_procedure = ascii_create_procedure;
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plug_in_class->set_i18n = STD_SET_I18N;
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}
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static void
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ascii_init (Ascii *ascii)
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{
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}
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static GList *
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ascii_query_procedures (PikaPlugIn *plug_in)
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{
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return g_list_append (NULL, g_strdup (SAVE_PROC));
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}
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static PikaProcedure *
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ascii_create_procedure (PikaPlugIn *plug_in,
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const gchar *name)
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{
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PikaProcedure *procedure = NULL;
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if (! strcmp (name, SAVE_PROC))
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{
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gint i;
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procedure = pika_save_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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ascii_save, NULL, NULL);
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pika_procedure_set_image_types (procedure, "*");
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pika_procedure_set_menu_label (procedure, _("ASCII art"));
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pika_file_procedure_set_format_name (PIKA_FILE_PROCEDURE (procedure),
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_("ASCII art"));
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pika_procedure_set_documentation (procedure,
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_("Saves grayscale image in various "
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"text formats"),
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_("This plug-in uses aalib to save "
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"grayscale image as ascii art into "
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"a variety of text formats"),
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name);
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pika_procedure_set_attribution (procedure,
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"Tim Newsome <nuisance@cmu.edu>",
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"Tim Newsome <nuisance@cmu.edu>",
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"1997");
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pika_file_procedure_set_mime_types (PIKA_FILE_PROCEDURE (procedure),
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"text/plain");
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pika_file_procedure_set_extensions (PIKA_FILE_PROCEDURE (procedure),
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"txt,ansi,text");
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for (i = 0; aa_formats[i]; i++);
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PIKA_PROC_ARG_INT (procedure, "file-type",
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_("_Format"),
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_("File type to use"),
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0, i, 0,
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G_PARAM_READWRITE);
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}
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return procedure;
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}
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static PikaValueArray *
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ascii_save (PikaProcedure *procedure,
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PikaRunMode run_mode,
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PikaImage *image,
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gint n_drawables,
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PikaDrawable **drawables,
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GFile *file,
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const PikaValueArray *args,
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gpointer run_data)
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{
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PikaProcedureConfig *config;
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PikaPDBStatusType status = PIKA_PDB_SUCCESS;
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PikaExportReturn export = PIKA_EXPORT_CANCEL;
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GError *error = NULL;
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gegl_init (NULL, NULL);
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config = pika_procedure_create_config (procedure);
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pika_procedure_config_begin_run (config, image, run_mode, args);
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switch (run_mode)
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{
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case PIKA_RUN_INTERACTIVE:
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case PIKA_RUN_WITH_LAST_VALS:
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pika_ui_init (PLUG_IN_BINARY);
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export = pika_export_image (&image, &n_drawables, &drawables, "AA",
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PIKA_EXPORT_CAN_HANDLE_RGB |
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PIKA_EXPORT_CAN_HANDLE_GRAY |
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PIKA_EXPORT_CAN_HANDLE_INDEXED |
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PIKA_EXPORT_CAN_HANDLE_ALPHA);
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if (export == PIKA_EXPORT_CANCEL)
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CANCEL,
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NULL);
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break;
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default:
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break;
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}
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if (n_drawables != 1)
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{
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g_set_error (&error, G_FILE_ERROR, 0,
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_("ASCII art does not support multiple layers."));
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return pika_procedure_new_return_values (procedure,
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PIKA_PDB_CALLING_ERROR,
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error);
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}
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if (run_mode == PIKA_RUN_INTERACTIVE)
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{
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if (! save_dialog (procedure, G_OBJECT (config), image))
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status = PIKA_PDB_CANCEL;
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}
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if (status == PIKA_PDB_SUCCESS)
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{
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if (! save_aa (file, drawables[0], G_OBJECT (config), &error))
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{
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status = PIKA_PDB_EXECUTION_ERROR;
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}
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}
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pika_procedure_config_end_run (config, status);
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g_object_unref (config);
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if (export == PIKA_EXPORT_EXPORT)
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{
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pika_image_delete (image);
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g_free (drawables);
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}
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return pika_procedure_new_return_values (procedure, status, error);
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}
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static gboolean
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save_aa (GFile *file,
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PikaDrawable *drawable,
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GObject *config,
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GError **error)
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{
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aa_savedata savedata;
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aa_context *context;
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aa_format format;
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gint output_type;
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g_object_get (config,
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"file-type", &output_type,
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NULL);
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memcpy (&format, aa_formats[output_type], sizeof (aa_format));
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format.width = pika_drawable_get_width (drawable) / 2;
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format.height = pika_drawable_get_height (drawable) / 2;
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/* Get a libaa context which will save its output to filename. */
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savedata.name = g_file_get_path (file);
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savedata.format = &format;
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context = aa_init (&save_d, &aa_defparams, &savedata);
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if (! context)
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return FALSE;
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pika2aa (drawable, context);
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aa_flush (context);
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aa_close (context);
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return TRUE;
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}
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static void
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pika2aa (PikaDrawable *drawable,
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aa_context *context)
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{
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GeglBuffer *buffer;
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const Babl *format;
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aa_renderparams *renderparams;
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gint width;
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gint height;
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gint x, y;
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gint bpp;
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guchar *buf;
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guchar *p;
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buffer = pika_drawable_get_buffer (drawable);
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width = aa_imgwidth (context);
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height = aa_imgheight (context);
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switch (pika_drawable_type (drawable))
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{
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case PIKA_GRAY_IMAGE:
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format = babl_format ("Y' u8");
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break;
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case PIKA_GRAYA_IMAGE:
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format = babl_format ("Y'A u8");
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break;
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case PIKA_RGB_IMAGE:
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case PIKA_INDEXED_IMAGE:
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format = babl_format ("R'G'B' u8");
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break;
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case PIKA_RGBA_IMAGE:
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case PIKA_INDEXEDA_IMAGE:
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format = babl_format ("R'G'B'A u8");
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break;
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default:
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g_return_if_reached ();
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break;
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}
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bpp = babl_format_get_bytes_per_pixel (format);
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buf = g_new (guchar, width * bpp);
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for (y = 0; y < height; y++)
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{
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gegl_buffer_get (buffer, GEGL_RECTANGLE (0, y, width, 1), 1.0,
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format, buf,
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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switch (bpp)
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{
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case 1: /* GRAY */
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for (x = 0, p = buf; x < width; x++, p++)
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aa_putpixel (context, x, y, *p);
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break;
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case 2: /* GRAYA, blend over black */
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for (x = 0, p = buf; x < width; x++, p += 2)
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aa_putpixel (context, x, y, (p[0] * (p[1] + 1)) >> 8);
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break;
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case 3: /* RGB */
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for (x = 0, p = buf; x < width; x++, p += 3)
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aa_putpixel (context, x, y,
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PIKA_RGB_LUMINANCE (p[0], p[1], p[2]) + 0.5);
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break;
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case 4: /* RGBA, blend over black */
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for (x = 0, p = buf; x < width; x++, p += 4)
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aa_putpixel (context, x, y,
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((guchar) (PIKA_RGB_LUMINANCE (p[0], p[1], p[2]) + 0.5)
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* (p[3] + 1)) >> 8);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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}
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g_free (buf);
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g_object_unref (buffer);
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renderparams = aa_getrenderparams ();
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renderparams->dither = AA_FLOYD_S;
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aa_render (context, renderparams, 0, 0,
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aa_scrwidth (context), aa_scrheight (context));
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}
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static gboolean
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save_dialog (PikaProcedure *procedure,
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GObject *config,
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PikaImage *image)
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{
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GtkWidget *dialog;
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GtkListStore *store;
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GtkWidget *combo;
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gint i;
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gboolean run;
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dialog = pika_save_procedure_dialog_new (PIKA_SAVE_PROCEDURE (procedure),
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PIKA_PROCEDURE_CONFIG (config),
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image);
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store = g_object_new (PIKA_TYPE_INT_STORE, NULL);
|
||
|
|
|
||
|
|
for (i = 0; aa_formats[i]; i++)
|
||
|
|
gtk_list_store_insert_with_values (store, NULL, -1,
|
||
|
|
PIKA_INT_STORE_VALUE, i,
|
||
|
|
PIKA_INT_STORE_LABEL, aa_formats[i]->formatname,
|
||
|
|
-1);
|
||
|
|
|
||
|
|
combo = pika_procedure_dialog_get_int_combo (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"file-type",
|
||
|
|
PIKA_INT_STORE (store));
|
||
|
|
g_object_set (combo, "margin", 12, NULL);
|
||
|
|
|
||
|
|
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog), NULL);
|
||
|
|
gtk_widget_show (dialog);
|
||
|
|
|
||
|
|
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
|
||
|
|
|
||
|
|
gtk_widget_destroy (dialog);
|
||
|
|
|
||
|
|
return run;
|
||
|
|
}
|
