469 lines
16 KiB
C
469 lines
16 KiB
C
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/* borderaverage 0.01 - image processing plug-in for PIKA.
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*
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* Copyright (C) 1998 Philipp Klaus (webmaster@access.ch)
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*
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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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#include "config.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 PLUG_IN_PROC "plug-in-borderaverage"
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#define PLUG_IN_BINARY "border-average"
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#define PLUG_IN_ROLE "pika-border-average"
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typedef struct _BorderAverage BorderAverage;
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typedef struct _BorderAverageClass BorderAverageClass;
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struct _BorderAverage
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{
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PikaPlugIn parent_instance;
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};
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struct _BorderAverageClass
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{
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PikaPlugInClass parent_class;
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};
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#define BORDER_AVERAGE_TYPE (border_average_get_type ())
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#define BORDER_AVERAGE (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), BORDER_AVERAGE_TYPE, BorderAverage))
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GType border_average_get_type (void) G_GNUC_CONST;
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static GList * border_average_query_procedures (PikaPlugIn *plug_in);
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static PikaProcedure * border_average_create_procedure (PikaPlugIn *plug_in,
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const gchar *name);
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static PikaValueArray * border_average_run (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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const PikaValueArray *args,
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gpointer run_data);
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static void borderaverage (GObject *config,
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GeglBuffer *buffer,
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PikaDrawable *drawable,
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PikaRGB *result);
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static gboolean borderaverage_dialog (PikaProcedure *procedure,
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GObject *config,
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PikaImage *image,
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PikaDrawable *drawable);
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static void add_new_color (const guchar *buffer,
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gint *cube,
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gint bucket_expo);
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G_DEFINE_TYPE (BorderAverage, border_average, PIKA_TYPE_PLUG_IN)
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PIKA_MAIN (BORDER_AVERAGE_TYPE)
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DEFINE_STD_SET_I18N
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static void
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border_average_class_init (BorderAverageClass *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 = border_average_query_procedures;
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plug_in_class->create_procedure = border_average_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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border_average_init (BorderAverage *film)
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{
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}
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static GList *
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border_average_query_procedures (PikaPlugIn *plug_in)
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{
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return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
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}
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static PikaProcedure *
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border_average_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, PLUG_IN_PROC))
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{
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procedure = pika_image_procedure_new (plug_in, name,
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PIKA_PDB_PROC_TYPE_PLUGIN,
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border_average_run, NULL, NULL);
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pika_procedure_set_image_types (procedure, "RGB*");
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pika_procedure_set_sensitivity_mask (procedure,
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PIKA_PROCEDURE_SENSITIVE_DRAWABLE);
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pika_procedure_set_menu_label (procedure, _("_Border Average..."));
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pika_procedure_add_menu_path (procedure, "<Image>/Colors/Info");
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pika_procedure_set_documentation (procedure,
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_("Set foreground to the average color of the image border"),
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"",
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name);
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pika_procedure_set_attribution (procedure,
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"Philipp Klaus",
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"Internet Access AG",
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"1998");
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PIKA_PROC_ARG_INT (procedure, "thickness",
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_("_Thickness"),
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_("Border size to take in count"),
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0, G_MAXINT, 3,
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G_PARAM_READWRITE);
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PIKA_PROC_AUX_ARG_UNIT (procedure, "thickness-unit",
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_("Thickness unit of measure"),
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_("Border size unit of measure"),
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TRUE, TRUE, PIKA_UNIT_PIXEL,
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PIKA_PARAM_READWRITE);
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PIKA_PROC_ARG_INT (procedure, "bucket-exponent",
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_("Bucket Si_ze"),
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_("Bits for bucket size (default=4: 16 Levels)"),
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0, G_MAXINT, 4,
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G_PARAM_READWRITE);
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PIKA_PROC_VAL_RGB (procedure, "borderaverage",
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_("The average color of the specified border."),
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_("The average color of the specified border."),
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TRUE, NULL,
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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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border_average_run (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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const PikaValueArray *args,
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gpointer run_data)
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{
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PikaProcedureConfig *config;
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PikaDrawable *drawable;
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PikaValueArray *return_vals = NULL;
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PikaPDBStatusType status = PIKA_PDB_SUCCESS;
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PikaRGB result_color = { 0.0, };
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GeglBuffer *buffer;
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gegl_init (NULL, NULL);
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if (n_drawables != 1)
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{
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GError *error = NULL;
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g_set_error (&error, PIKA_PLUG_IN_ERROR, 0,
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_("Procedure '%s' only works with one drawable."),
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PLUG_IN_PROC);
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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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else
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{
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drawable = drawables[0];
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}
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config = pika_procedure_create_config (procedure);
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pika_procedure_config_begin_run (config, NULL, run_mode, args);
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buffer = pika_drawable_get_buffer (drawable);
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switch (run_mode)
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{
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case PIKA_RUN_INTERACTIVE:
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if (! borderaverage_dialog (procedure, G_OBJECT (config),
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image, drawable))
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status = PIKA_PDB_EXECUTION_ERROR;
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break;
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case PIKA_RUN_NONINTERACTIVE:
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if (pika_value_array_length (args) != 2)
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status = PIKA_PDB_CALLING_ERROR;
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break;
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default:
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break;
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}
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if (status == PIKA_PDB_SUCCESS)
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{
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/* Make sure that the drawable is RGB color */
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if (pika_drawable_is_rgb (drawable))
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{
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pika_progress_init ( _("Border Average"));
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borderaverage (G_OBJECT (config), buffer, drawable, &result_color);
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if (run_mode != PIKA_RUN_NONINTERACTIVE)
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pika_context_set_foreground (&result_color);
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}
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else
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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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g_object_unref (buffer);
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return_vals = pika_procedure_new_return_values (procedure, status, NULL);
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pika_procedure_config_end_run (config, PIKA_PDB_SUCCESS);
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g_object_unref (config);
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if (status == PIKA_PDB_SUCCESS)
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PIKA_VALUES_SET_RGB (return_vals, 1, &result_color);
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return return_vals;
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}
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static void
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borderaverage (GObject *config,
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GeglBuffer *buffer,
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PikaDrawable *drawable,
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PikaRGB *result)
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{
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gint x, y, width, height;
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gint max;
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guchar r, g, b;
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gint bucket_num, bucket_expo, bucket_rexpo;
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gint *cube;
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gint i, j, k;
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GeglRectangle border[4];
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gint borderaverage_thickness;
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gint borderaverage_bucket_exponent;
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g_object_get (config,
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"thickness", &borderaverage_thickness,
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"bucket-exponent", &borderaverage_bucket_exponent,
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NULL);
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if (! pika_drawable_mask_intersect (drawable, &x, &y, &width, &height))
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{
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pika_rgba_set_uchar (result, 0, 0, 0, 255);
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return;
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}
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/* allocate and clear the cube before */
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bucket_expo = borderaverage_bucket_exponent;
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bucket_rexpo = 8 - bucket_expo;
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cube = g_new (gint, 1 << (bucket_rexpo * 3));
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bucket_num = 1 << bucket_rexpo;
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for (i = 0; i < bucket_num; i++)
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{
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for (j = 0; j < bucket_num; j++)
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{
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for (k = 0; k < bucket_num; k++)
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{
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cube[(i << (bucket_rexpo << 1)) + (j << bucket_rexpo) + k] = 0;
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}
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}
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}
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/* Top */
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border[0].x = x;
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border[0].y = y;
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border[0].width = width;
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border[0].height = borderaverage_thickness;
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/* Bottom */
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border[1].x = x;
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border[1].y = y + height - borderaverage_thickness;
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border[1].width = width;
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border[1].height = borderaverage_thickness;
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/* Left */
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border[2].x = x;
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border[2].y = y + borderaverage_thickness;
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border[2].width = borderaverage_thickness;
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border[2].height = height - 2 * borderaverage_thickness;
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/* Right */
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border[3].x = x + width - borderaverage_thickness;
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border[3].y = y + borderaverage_thickness;
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border[3].width = borderaverage_thickness;
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border[3].height = height - 2 * borderaverage_thickness;
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/* Fill the cube */
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for (i = 0; i < 4; i++)
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{
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if (border[i].width > 0 && border[i].height > 0)
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{
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GeglBufferIterator *gi;
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gi = gegl_buffer_iterator_new (buffer, &border[i], 0, babl_format ("R'G'B' u8"),
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GEGL_ACCESS_READWRITE, GEGL_ABYSS_NONE, 1);
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while (gegl_buffer_iterator_next (gi))
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{
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guint k;
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guchar *data;
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data = (guchar*) gi->items[0].data;
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for (k = 0; k < gi->length; k++)
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{
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add_new_color (data + k * 3,
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cube,
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bucket_expo);
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}
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}
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}
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}
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max = 0; r = 0; g = 0; b = 0;
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/* get max of cube */
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for (i = 0; i < bucket_num; i++)
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{
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for (j = 0; j < bucket_num; j++)
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{
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for (k = 0; k < bucket_num; k++)
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{
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if (cube[(i << (bucket_rexpo << 1)) +
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(j << bucket_rexpo) + k] > max)
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{
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max = cube[(i << (bucket_rexpo << 1)) +
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(j << bucket_rexpo) + k];
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r = (i<<bucket_expo) + (1<<(bucket_expo - 1));
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g = (j<<bucket_expo) + (1<<(bucket_expo - 1));
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b = (k<<bucket_expo) + (1<<(bucket_expo - 1));
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}
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}
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}
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}
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/* return the color */
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pika_rgba_set_uchar (result, r, g, b, 255);
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g_free (cube);
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}
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static void
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add_new_color (const guchar *buffer,
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gint *cube,
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gint bucket_expo)
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{
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guchar r, g, b;
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gint bucket_rexpo;
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bucket_rexpo = 8 - bucket_expo;
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r = buffer[0] >> bucket_expo;
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g = buffer[1] >> bucket_expo;
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b = buffer[2] >> bucket_expo;
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cube[(r << (bucket_rexpo << 1)) + (g << bucket_rexpo) + b]++;
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}
|
||
|
|
|
||
|
|
static gboolean
|
||
|
|
borderaverage_dialog (PikaProcedure *procedure,
|
||
|
|
GObject *config,
|
||
|
|
PikaImage *image,
|
||
|
|
PikaDrawable *drawable)
|
||
|
|
{
|
||
|
|
GtkWidget *dialog;
|
||
|
|
GtkListStore *store;
|
||
|
|
GtkWidget *size_entry;
|
||
|
|
gboolean run;
|
||
|
|
gdouble xres, yres;
|
||
|
|
GeglBuffer *buffer = NULL;
|
||
|
|
|
||
|
|
pika_ui_init (PLUG_IN_BINARY);
|
||
|
|
|
||
|
|
dialog = pika_procedure_dialog_new (procedure,
|
||
|
|
PIKA_PROCEDURE_CONFIG (config),
|
||
|
|
_("Border Average"));
|
||
|
|
|
||
|
|
pika_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
|
||
|
|
GTK_RESPONSE_OK,
|
||
|
|
GTK_RESPONSE_CANCEL,
|
||
|
|
-1);
|
||
|
|
|
||
|
|
pika_window_set_transient (GTK_WINDOW (dialog));
|
||
|
|
|
||
|
|
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"border-size-label",
|
||
|
|
_("Border Size"));
|
||
|
|
|
||
|
|
/* Get the image resolution */
|
||
|
|
pika_image_get_resolution (image, &xres, &yres);
|
||
|
|
size_entry = pika_procedure_dialog_get_size_entry (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"thickness", TRUE,
|
||
|
|
"thickness-unit", "%a",
|
||
|
|
PIKA_SIZE_ENTRY_UPDATE_SIZE,
|
||
|
|
xres);
|
||
|
|
|
||
|
|
/* set the size (in pixels) that will be treated as 0% and 100% */
|
||
|
|
buffer = pika_drawable_get_buffer (drawable);
|
||
|
|
if (buffer)
|
||
|
|
pika_size_entry_set_size (PIKA_SIZE_ENTRY (size_entry), 0, 0.0,
|
||
|
|
MIN (gegl_buffer_get_width (buffer),
|
||
|
|
gegl_buffer_get_height (buffer)));
|
||
|
|
pika_size_entry_set_refval_boundaries (PIKA_SIZE_ENTRY (size_entry), 0, 1.0,
|
||
|
|
MIN (gegl_buffer_get_width (buffer),
|
||
|
|
gegl_buffer_get_height (buffer)) / 2);
|
||
|
|
|
||
|
|
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"border-size-frame", "border-size-label",
|
||
|
|
FALSE, "thickness");
|
||
|
|
|
||
|
|
pika_procedure_dialog_get_label (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"bucket-size-label",
|
||
|
|
_("Number of Colors"));
|
||
|
|
|
||
|
|
store = pika_int_store_new ("1", 0, "2", 1, "4", 2, "8", 3,
|
||
|
|
"16", 4, "32", 5, "64", 6, "128", 7,
|
||
|
|
"256", 8, NULL);
|
||
|
|
pika_procedure_dialog_get_int_combo (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"bucket-exponent",
|
||
|
|
PIKA_INT_STORE (store));
|
||
|
|
|
||
|
|
pika_procedure_dialog_fill_frame (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"bucket-size-frame", "bucket-size-label",
|
||
|
|
FALSE, "bucket-exponent");
|
||
|
|
|
||
|
|
pika_procedure_dialog_fill (PIKA_PROCEDURE_DIALOG (dialog),
|
||
|
|
"border-size-frame",
|
||
|
|
"bucket-size-frame",
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
gtk_widget_show (dialog);
|
||
|
|
|
||
|
|
run = pika_procedure_dialog_run (PIKA_PROCEDURE_DIALOG (dialog));
|
||
|
|
|
||
|
|
gtk_widget_destroy (dialog);
|
||
|
|
|
||
|
|
return run;
|
||
|
|
}
|
