mirror of https://github.com/GNOME/gimp.git
157 lines
4.1 KiB
C
157 lines
4.1 KiB
C
/*
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* Semi-Flatten plug-in v1.0 by Adam D. Moss, adam@foxbox.org. 1998/01/27
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*/
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/* GIMP - The GNU Image Manipulation Program
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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/stdplugins-intl.h"
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#define PLUG_IN_PROC "plug-in-semiflatten"
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/* Declare local functions.
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*/
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static void query (void);
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static void run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals);
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static void semiflatten (GimpDrawable *drawable);
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static guchar bgred, bggreen, bgblue;
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const GimpPlugInInfo PLUG_IN_INFO =
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{
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NULL, /* init_proc */
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NULL, /* quit_proc */
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query, /* query_proc */
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run, /* run_proc */
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};
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MAIN ()
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static void
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query (void)
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{
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static const GimpParamDef args[] =
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{
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{ GIMP_PDB_INT32, "run-mode", "Interactive, non-interactive" },
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{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
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{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" }
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};
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gimp_install_procedure (PLUG_IN_PROC,
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N_("Replace partial transparency with the current background color"),
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"This plugin flattens pixels in an RGBA image that "
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"aren't completely transparent against the current "
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"GIMP background color",
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"Adam D. Moss (adam@foxbox.org)",
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"Adam D. Moss (adam@foxbox.org)",
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"27th January 1998",
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N_("_Semi-Flatten"),
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"RGBA",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args), 0,
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args, NULL);
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gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Web");
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gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Layer/Transparency/Modify");
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}
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static void
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run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals)
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{
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static GimpParam values[1];
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GimpDrawable *drawable;
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gint32 image_ID;
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GimpPDBStatusType status = GIMP_PDB_SUCCESS;
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GimpRunMode run_mode;
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run_mode = param[0].data.d_int32;
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*nreturn_vals = 1;
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*return_vals = values;
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values[0].type = GIMP_PDB_STATUS;
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values[0].data.d_status = status;
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INIT_I18N();
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/* Get the specified drawable */
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drawable = gimp_drawable_get (param[2].data.d_drawable);
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image_ID = param[1].data.d_image;
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if (status == GIMP_PDB_SUCCESS)
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{
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/* Make sure that the drawable is indexed or RGB color */
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if (gimp_drawable_is_rgb (drawable->drawable_id))
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{
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gimp_progress_init (_("Semi-Flattening"));
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gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width ()
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+ 1));
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semiflatten (drawable);
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gimp_displays_flush ();
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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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values[0].data.d_status = status;
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gimp_drawable_detach (drawable);
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}
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static void
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semiflatten_func (const guchar *src,
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guchar *dest,
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gint bpp,
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gpointer data)
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{
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dest[0] = (src[0] * src[3]) / 255 + (bgred * (255 - src[3])) / 255;
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dest[1] = (src[1] * src[3]) / 255 + (bggreen * (255 - src[3])) / 255;
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dest[2] = (src[2] * src[3]) / 255 + (bgblue * (255 - src[3])) / 255;
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dest[3] = (src[3] == 0) ? 0 : 255;
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}
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static void
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semiflatten (GimpDrawable *drawable)
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{
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GimpRGB background;
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gimp_context_get_background (&background);
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gimp_rgb_get_uchar (&background, &bgred, &bggreen, &bgblue);
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gimp_rgn_iterate2 (drawable, 0 /* unused */, semiflatten_func, NULL);
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}
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