mirror of https://github.com/GNOME/gimp.git
455 lines
16 KiB
C
455 lines
16 KiB
C
/* borderaverage 0.01 - image processing plug-in for GIMP.
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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 <libgimp/gimp.h>
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#include <libgimp/gimpui.h>
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#include "libgimp/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 "gimp-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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GimpPlugIn parent_instance;
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};
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struct _BorderAverageClass
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{
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GimpPlugInClass 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 (GimpPlugIn *plug_in);
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static GimpProcedure * border_average_create_procedure (GimpPlugIn *plug_in,
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const gchar *name);
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static GimpValueArray * border_average_run (GimpProcedure *procedure,
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GimpRunMode run_mode,
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GimpImage *image,
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GimpDrawable **drawables,
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GimpProcedureConfig *config,
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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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GimpDrawable *drawable,
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GeglColor *result);
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static gboolean borderaverage_dialog (GimpProcedure *procedure,
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GObject *config,
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GimpImage *image,
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GimpDrawable *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, GIMP_TYPE_PLUG_IN)
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GIMP_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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GimpPlugInClass *plug_in_class = GIMP_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 (GimpPlugIn *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 GimpProcedure *
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border_average_create_procedure (GimpPlugIn *plug_in,
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const gchar *name)
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{
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GimpProcedure *procedure = NULL;
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GeglColor *default_return_color;
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gegl_init (NULL, NULL);
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default_return_color = gegl_color_new ("none");
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if (! strcmp (name, PLUG_IN_PROC))
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{
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procedure = gimp_image_procedure_new (plug_in, name,
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GIMP_PDB_PROC_TYPE_PLUGIN,
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border_average_run, NULL, NULL);
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gimp_procedure_set_image_types (procedure, "RGB*");
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gimp_procedure_set_sensitivity_mask (procedure,
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GIMP_PROCEDURE_SENSITIVE_DRAWABLE);
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gimp_procedure_set_menu_label (procedure, _("_Border Average..."));
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gimp_procedure_add_menu_path (procedure, "<Image>/Colors/Info");
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gimp_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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gimp_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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gimp_procedure_add_int_argument (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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gimp_procedure_add_unit_aux_argument (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, gimp_unit_pixel (),
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GIMP_PARAM_READWRITE);
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gimp_procedure_add_choice_argument (procedure, "bucket-exponent",
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_("Bucket Si_ze"),
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_("Bits for bucket size"),
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gimp_choice_new_with_values ("levels-1", 0, _("1"), NULL,
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"levels-2", 1, _("2"), NULL,
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"levels-4", 2, _("4"), NULL,
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"levels-8", 3, _("8"), NULL,
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"levels-16", 4, _("16"), NULL,
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"levels-32", 5, _("32"), NULL,
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"levels-64", 6, _("64"), NULL,
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"levels-128", 7, _("128"), NULL,
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"levels-256", 8, _("256"), NULL,
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NULL),
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"levels-16",
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G_PARAM_READWRITE);
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gimp_procedure_add_color_return_value (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, default_return_color,
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G_PARAM_READWRITE);
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}
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g_object_unref (default_return_color);
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return procedure;
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}
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static GimpValueArray *
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border_average_run (GimpProcedure *procedure,
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GimpRunMode run_mode,
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GimpImage *image,
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GimpDrawable **drawables,
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GimpProcedureConfig *config,
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gpointer run_data)
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{
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GimpDrawable *drawable;
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GimpValueArray *return_vals = NULL;
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GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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GeglColor *result_color;
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GeglBuffer *buffer;
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gegl_init (NULL, NULL);
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if (gimp_core_object_array_get_length ((GObject **) drawables) != 1)
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{
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GError *error = NULL;
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g_set_error (&error, GIMP_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 gimp_procedure_new_return_values (procedure,
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GIMP_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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result_color = gegl_color_new ("transparent");
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buffer = gimp_drawable_get_buffer (drawable);
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if (run_mode == GIMP_RUN_INTERACTIVE &&
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! borderaverage_dialog (procedure, G_OBJECT (config), image, drawable))
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{
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g_object_unref (result_color);
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return gimp_procedure_new_return_values (procedure, GIMP_PDB_CANCEL, NULL);
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}
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if (status == GIMP_PDB_SUCCESS)
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{
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/* Make sure that the drawable is RGB color */
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if (gimp_drawable_is_rgb (drawable))
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{
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gimp_progress_init ( _("Border Average"));
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borderaverage (G_OBJECT (config), buffer, drawable, result_color);
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if (run_mode != GIMP_RUN_NONINTERACTIVE)
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gimp_context_set_foreground (result_color);
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}
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else
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{
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status = GIMP_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 = gimp_procedure_new_return_values (procedure, status, NULL);
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if (status == GIMP_PDB_SUCCESS)
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GIMP_VALUES_SET_COLOR (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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GimpDrawable *drawable,
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GeglColor *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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NULL);
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borderaverage_bucket_exponent =
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gimp_procedure_config_get_choice_id (GIMP_PROCEDURE_CONFIG (config),
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"bucket-exponent");
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if (! gimp_drawable_mask_intersect (drawable, &x, &y, &width, &height))
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{
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gegl_color_set_rgba (result, 0.0, 0.0, 0.0, 1.0);
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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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gegl_color_set_rgba (result, r / 255.0, g / 255.0, b / 255.0, 1.0);
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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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}
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static gboolean
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borderaverage_dialog (GimpProcedure *procedure,
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GObject *config,
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GimpImage *image,
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GimpDrawable *drawable)
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{
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GtkWidget *dialog;
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GtkWidget *size_entry;
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gboolean run;
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gdouble xres, yres;
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GeglBuffer *buffer = NULL;
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gimp_ui_init (PLUG_IN_BINARY);
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dialog = gimp_procedure_dialog_new (procedure,
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GIMP_PROCEDURE_CONFIG (config),
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_("Border Average"));
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gimp_procedure_dialog_get_label (GIMP_PROCEDURE_DIALOG (dialog),
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"border-size-label",
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_("Border Size"),
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FALSE, FALSE);
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/* Get the image resolution */
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gimp_image_get_resolution (image, &xres, &yres);
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size_entry = gimp_procedure_dialog_get_size_entry (GIMP_PROCEDURE_DIALOG (dialog),
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"thickness", TRUE,
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"thickness-unit", "%a",
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GIMP_SIZE_ENTRY_UPDATE_SIZE,
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xres);
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/* set the size (in pixels) that will be treated as 0% and 100% */
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buffer = gimp_drawable_get_buffer (drawable);
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if (buffer)
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gimp_size_entry_set_size (GIMP_SIZE_ENTRY (size_entry), 0, 0.0,
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MIN (gegl_buffer_get_width (buffer),
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gegl_buffer_get_height (buffer)));
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gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (size_entry), 0, 1.0,
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MIN (gegl_buffer_get_width (buffer),
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gegl_buffer_get_height (buffer)) / 2);
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gimp_procedure_dialog_fill_frame (GIMP_PROCEDURE_DIALOG (dialog),
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"border-size-frame", "border-size-label",
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FALSE, "thickness");
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gimp_procedure_dialog_get_label (GIMP_PROCEDURE_DIALOG (dialog),
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"bucket-size-label",
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_("Number of Colors"),
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FALSE, FALSE);
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gimp_procedure_dialog_fill_frame (GIMP_PROCEDURE_DIALOG (dialog),
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"bucket-size-frame", "bucket-size-label",
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FALSE, "bucket-exponent");
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gimp_procedure_dialog_fill (GIMP_PROCEDURE_DIALOG (dialog),
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"border-size-frame",
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"bucket-size-frame",
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NULL);
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gtk_widget_show (dialog);
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run = gimp_procedure_dialog_run (GIMP_PROCEDURE_DIALOG (dialog));
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gtk_widget_destroy (dialog);
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return run;
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}
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