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gimp/plug-ins/winicon/main.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* GIMP Plug-in for Windows Icon files.
* Copyright (C) 2002 Christian Kreibich <christian@whoop.org>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <stdio.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
/* #define ICO_DBG */
#include "main.h"
#include "icoload.h"
#include "icosave.h"
#include "libgimp/stdplugins-intl.h"
gboolean interactive_ico = FALSE;
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static GimpParamDef load_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_STRING, "filename", "The name of the file to load" },
{ GIMP_PDB_STRING, "raw_filename", "The name entered" }
};
static GimpParamDef load_return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" },
};
static GimpParamDef save_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },
{ GIMP_PDB_STRING, "filename", "The name of the file to save the image in" },
{ GIMP_PDB_STRING, "raw_filename", "The name entered" },
};
gimp_install_procedure ("file_ico_load",
"Loads files of Windows ICO file format",
"Loads files of Windows ICO file format",
"Christian Kreibich <christian@whoop.org>",
"Christian Kreibich <christian@whoop.org>",
"2002",
N_("Microsoft Windows icon"),
NULL,
GIMP_PLUGIN,
G_N_ELEMENTS (load_args),
G_N_ELEMENTS (load_return_vals),
load_args, load_return_vals);
gimp_plugin_menu_register ("file_ico_load", "<Load>");
gimp_register_file_handler_mime ("file_ico_load", "image/x-ico");
gimp_register_magic_load_handler ("file_ico_load",
"ico",
"",
"0,string,\\000\\001\\000\\000,0,string,\\000\\002\\000\\000");
gimp_install_procedure ("file_ico_save",
"Saves files in Windows ICO file format",
"Saves files in Windows ICO file format",
"Christian Kreibich <christian@whoop.org>",
"Christian Kreibich <christian@whoop.org>",
"2002",
N_("Microsoft Windows icon"),
"INDEXEDA, GRAYA, RGBA",
GIMP_PLUGIN,
G_N_ELEMENTS (save_args), 0,
save_args, NULL);
gimp_plugin_menu_register ("file_ico_save", "<Save>");
gimp_register_file_handler_mime ("file_ico_save", "image/x-ico");
gimp_register_save_handler ("file_ico_save",
"ico",
"");
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
gint32 image_ID;
gint32 drawable_ID;
GimpRunMode run_mode;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpExportReturn export = GIMP_EXPORT_CANCEL;
INIT_I18N ();
run_mode = param[0].data.d_int32;
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
if (strcmp (name, "file_ico_load") == 0)
{
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
interactive_ico = TRUE;
break;
case GIMP_RUN_NONINTERACTIVE:
interactive_ico = FALSE;
if (nparams != 3)
status = GIMP_PDB_CALLING_ERROR;
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
image_ID = LoadICO (param[1].data.d_string);
if (image_ID != -1)
{
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
else
{
status = GIMP_PDB_EXECUTION_ERROR;
}
}
}
else if (strcmp (name, "file_ico_save") == 0)
{
gchar *file_name;
image_ID = param[1].data.d_int32;
drawable_ID = param[2].data.d_int32;
file_name = param[3].data.d_string;
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
interactive_ico = TRUE;
break;
case GIMP_RUN_NONINTERACTIVE:
interactive_ico = FALSE;
/* Make sure all the arguments are there! */
if (nparams < 5)
status = GIMP_PDB_CALLING_ERROR;
break;
case GIMP_RUN_WITH_LAST_VALS:
interactive_ico = FALSE;
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
status = SaveICO (file_name, image_ID);
}
if (export == GIMP_EXPORT_EXPORT)
gimp_image_delete (image_ID);
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
}
guint8 *
ico_alloc_map(gint width,
gint height,
gint bpp,
gint *length)
{
gint len = 0;
guint8 *map = NULL;
switch (bpp)
{
case 1:
if ((width % 32) == 0)
len = (width * height / 8);
else
len = 4 * ((width/32 + 1) * height);
break;
case 4:
if ((width % 8) == 0)
len = (width * height / 2);
else
len = 4 * ((width/8 + 1) * height);
break;
case 8:
if ((width % 4) == 0)
len = width * height;
else
len = 4 * ((width/4 + 1) * height);
break;
default:
len = width * height * (bpp/8);
}
*length = len;
map = g_new0(guint8, len);
return map;
}
static gboolean
ico_cmap_contains_black (guchar *cmap,
gint num_colors)
{
gint i;
for (i = 0; i < num_colors; i++)
{
if ((cmap[3*i] == 0) &&
(cmap[3*i+1] == 0) &&
(cmap[3*i+2] == 0))
{
return TRUE;
}
}
return FALSE;
}
void
ico_image_reduce_layer_bpp (guint32 layer,
gint bpp)
{
GimpPixelRgn src_pixel_rgn, dst_pixel_rgn;
gint32 tmp_image;
gint32 tmp_layer;
gint w, h;
guchar *buffer;
w = gimp_drawable_width(layer);
h = gimp_drawable_height(layer);
if (bpp <= 8)
{
buffer = g_new (guchar, w * h * 4);
tmp_image = gimp_image_new (gimp_drawable_width (layer),
gimp_drawable_height (layer),
GIMP_RGB);
tmp_layer = gimp_layer_new (tmp_image, "tmp", w, h,
GIMP_RGBA_IMAGE, 100, GIMP_NORMAL_MODE);
gimp_pixel_rgn_init (&src_pixel_rgn, gimp_drawable_get(layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_init (&dst_pixel_rgn, gimp_drawable_get(tmp_layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_get_rect (&src_pixel_rgn, buffer, 0, 0, w, h);
gimp_pixel_rgn_set_rect (&dst_pixel_rgn, buffer, 0, 0, w, h);
gimp_image_add_layer (tmp_image, tmp_layer, 0);
gimp_image_convert_indexed (tmp_image,
GIMP_FS_DITHER,
GIMP_MAKE_PALETTE,
1 << bpp,
TRUE,
FALSE,
"dummy");
gimp_image_convert_rgb (tmp_image);
gimp_pixel_rgn_init (&dst_pixel_rgn, gimp_drawable_get (tmp_layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_get_rect (&dst_pixel_rgn, buffer, 0, 0, w, h);
gimp_pixel_rgn_set_rect (&src_pixel_rgn, buffer, 0, 0, w, h);
gimp_image_delete (tmp_image);
gimp_drawable_update (layer, 0, 0, w ,h);
/* WTF! What else can I do to make the layer dialog update??? */
g_free (buffer);
}
}
void
ico_image_get_reduced_buf (guint32 layer,
gint bpp,
gint *num_colors,
guchar **cmap_out,
guchar **buf_out,
gint *buf_bpp)
{
GimpPixelRgn src_pixel_rgn, dst_pixel_rgn;
gint32 tmp_image;
gint32 tmp_layer;
gint w, h;
guchar *buffer;
guchar *cmap;
gboolean result;
GimpDrawable *drawable;
w = gimp_drawable_width (layer);
h = gimp_drawable_height (layer);
*cmap_out = NULL;
*num_colors = 0;
buffer = g_new (guchar, w * h * 4);
if (bpp <= 8)
{
tmp_image = gimp_image_new (gimp_drawable_width (layer),
gimp_drawable_height (layer),
GIMP_RGB);
tmp_layer = gimp_layer_new (tmp_image, "tmp", w, h,
GIMP_RGBA_IMAGE, 100, GIMP_NORMAL_MODE);
gimp_pixel_rgn_init (&src_pixel_rgn, gimp_drawable_get(layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_init (&dst_pixel_rgn, gimp_drawable_get(tmp_layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_get_rect (&src_pixel_rgn, buffer, 0, 0, w, h);
gimp_pixel_rgn_set_rect (&dst_pixel_rgn, buffer, 0, 0, w, h);
gimp_image_add_layer (tmp_image, tmp_layer, 0);
result = gimp_image_convert_indexed(tmp_image,
GIMP_FS_DITHER,
GIMP_MAKE_PALETTE,
1 << bpp,
TRUE,
FALSE,
"dummy");
cmap = gimp_image_get_cmap (tmp_image, num_colors);
if (*num_colors == (1 << bpp) &&
!ico_cmap_contains_black(cmap, *num_colors))
{
/* Damn. Windows icons with color maps need the color black.
We need to eliminate one more color to make room for black: */
result = gimp_image_convert_rgb(tmp_image);
gimp_pixel_rgn_init (&dst_pixel_rgn, gimp_drawable_get(tmp_layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_set_rect (&dst_pixel_rgn, buffer, 0, 0, w, h);
result = gimp_image_convert_indexed(tmp_image,
GIMP_FS_DITHER,
GIMP_MAKE_PALETTE,
(1 << bpp) - 1,
TRUE,
FALSE,
"dummy");
}
cmap = gimp_image_get_cmap(tmp_image, num_colors);
*cmap_out = g_memdup (cmap, *num_colors * 3);
result = gimp_image_convert_rgb(tmp_image);
gimp_pixel_rgn_init (&dst_pixel_rgn, gimp_drawable_get(tmp_layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_get_rect (&dst_pixel_rgn, buffer, 0, 0, w, h);
drawable = gimp_drawable_get(tmp_layer);
*buf_bpp = drawable->bpp;
gimp_image_delete(tmp_image);
}
else
{
gimp_pixel_rgn_init (&dst_pixel_rgn, gimp_drawable_get(layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_get_rect (&dst_pixel_rgn, buffer, 0, 0, w, h);
drawable = gimp_drawable_get (layer);
*buf_bpp = drawable->bpp;
}
*buf_out = buffer;
}
static void
ico_free_color_item (gpointer data1,
gpointer data2,
gpointer data3)
{
g_free (data1);
/* Shut up warnings: */
data2 = NULL;
data3 = NULL;
}
gint
ico_get_layer_num_colors (gint32 layer,
gboolean *uses_alpha_levels)
{
GimpPixelRgn pixel_rgn;
gint x, y, w, h, alpha, num_colors = 0;
guint32 *buffer = NULL, *color;
GHashTable *hash;
w = gimp_drawable_width (layer);
h = gimp_drawable_height (layer);
buffer = g_new (gint32, w * h);
gimp_pixel_rgn_init (&pixel_rgn, gimp_drawable_get (layer),
0, 0, w, h, TRUE, FALSE);
gimp_pixel_rgn_get_rect (&pixel_rgn, (guchar*) buffer, 0, 0, w, h);
hash = g_hash_table_new (g_int_hash, g_int_equal);
*uses_alpha_levels = FALSE;
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
{
color = g_new0 (guint32, 1);
*color = buffer[y * w + x];
alpha = ((guint8*) color)[3];
if (alpha != 0 && alpha != 255)
*uses_alpha_levels = TRUE;
g_hash_table_insert(hash, color, color);
}
num_colors = g_hash_table_size(hash);
g_hash_table_foreach (hash, ico_free_color_item, NULL);
g_hash_table_destroy (hash);
g_free(buffer);
return num_colors;
}
void
ico_cleanup (MsIcon *ico)
{
gint i;
if (!ico)
return;
if (ico->fp)
fclose(ico->fp);
if (ico->icon_dir)
g_free (ico->icon_dir);
if (ico->icon_data)
{
for (i = 0; i < ico->icon_count; i++)
{
g_free (ico->icon_data[i].palette);
g_free (ico->icon_data[i].xor_map);
g_free (ico->icon_data[i].and_map);
}
g_free (ico->icon_data);
}
}
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