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gimp/plug-ins/common/colormap-remap.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/*
* Colormap remapping plug-in
* Copyright (C) 2006 Mukund Sivaraman <muks@mukund.org>
*
* This plug-in takes the colormap and lets you move colors from one index
* to another while keeping the original image visually unmodified.
*
* Such functionality is useful for creating graphics files for applications
* which expect certain indices to contain some specific colours.
*
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC_REMAP "plug-in-colormap-remap"
#define PLUG_IN_PROC_SWAP "plug-in-colormap-swap"
#define PLUG_IN_BINARY "colormap-remap"
/* Declare local functions.
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gboolean remap (gint32 image_ID,
gint num_colors,
guchar *map);
static gboolean remap_dialog (gint32 image_ID,
guchar *map);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef remap_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_INT32, "num-colors", "Length of 'map' argument "
"(should be equal to colormap size)" },
{ GIMP_PDB_INT8ARRAY, "map", "Remap array for the colormap" }
};
static const GimpParamDef swap_args[] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-NONINTERACTIVE (1) }" },
{ GIMP_PDB_IMAGE, "image", "Input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
{ GIMP_PDB_INT8, "index1", "First index in the colormap" },
{ GIMP_PDB_INT8, "index2", "Second (other) index in the colormap" }
};
gimp_install_procedure (PLUG_IN_PROC_REMAP,
N_("Rearrange the colormap"),
"This procedure takes an indexed image and lets you "
"alter the positions of colors in the colormap "
"without visually changing the image.",
"Mukund Sivaraman <muks@mukund.org>",
"Mukund Sivaraman <muks@mukund.org>",
"June 2006",
N_("R_earrange Colormap..."),
"INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (remap_args), 0,
remap_args, NULL);
gimp_plugin_menu_register (PLUG_IN_PROC_REMAP, "<Image>/Colors/Map/Colormap");
gimp_plugin_menu_register (PLUG_IN_PROC_REMAP, "<Colormap>");
gimp_plugin_icon_register (PLUG_IN_PROC_REMAP, GIMP_ICON_TYPE_STOCK_ID,
(const guint8 *) GIMP_STOCK_COLORMAP);
gimp_install_procedure (PLUG_IN_PROC_SWAP,
N_("Swap two colors in the colormap"),
"This procedure takes an indexed image and lets you "
"swap the positions of two colors in the colormap "
"without visually changing the image.",
"Mukund Sivaraman <muks@mukund.org>",
"Mukund Sivaraman <muks@mukund.org>",
"June 2006",
N_("_Swap Colors"),
"INDEXED*",
GIMP_PLUGIN,
G_N_ELEMENTS (swap_args), 0,
swap_args, NULL);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
gint32 image_ID;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpRunMode run_mode;
guchar map[256];
gint i;
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 = status;
image_ID = param[1].data.d_image;
for (i = 0; i < 256; i++)
map[i] = i;
if (strcmp (name, PLUG_IN_PROC_REMAP) == 0)
{
/* Make sure that the image is indexed */
if (gimp_image_base_type (image_ID) != GIMP_INDEXED)
status = GIMP_PDB_EXECUTION_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
gint n_cols;
g_free (gimp_image_get_colormap (image_ID, &n_cols));
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
if (! remap_dialog (image_ID, map))
status = GIMP_PDB_CANCEL;
break;
case GIMP_RUN_NONINTERACTIVE:
if (nparams != 5)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
if (n_cols != param[3].data.d_int32)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
for (i = 0; i < n_cols; i++)
map[i] = param[4].data.d_int8array[i];
}
}
break;
case GIMP_RUN_WITH_LAST_VALS:
gimp_get_data (PLUG_IN_PROC_REMAP, map);
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (! remap (image_ID, n_cols, map))
status = GIMP_PDB_EXECUTION_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC_REMAP, map, sizeof (map));
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
}
}
}
}
else if (strcmp (name, PLUG_IN_PROC_SWAP) == 0)
{
/* Make sure that the image is indexed */
if (gimp_image_base_type (image_ID) != GIMP_INDEXED)
status = GIMP_PDB_EXECUTION_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
if (run_mode == GIMP_RUN_NONINTERACTIVE && nparams == 5)
{
guchar index1 = param[3].data.d_int8;
guchar index2 = param[4].data.d_int8;
gint n_cols;
g_free (gimp_image_get_colormap (image_ID, &n_cols));
if (index1 >= n_cols || index2 >= n_cols)
status = GIMP_PDB_CALLING_ERROR;
if (status == GIMP_PDB_SUCCESS)
{
guchar tmp;
tmp = map[index1];
map[index1] = map[index2];
map[index2] = tmp;
if (! remap (image_ID, n_cols, map))
status = GIMP_PDB_EXECUTION_ERROR;
}
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
}
}
else
{
status = GIMP_PDB_CALLING_ERROR;
}
values[0].data.d_status = status;
}
static gboolean
remap (gint32 image_ID,
gint num_colors,
guchar *map)
{
guchar *cmap;
guchar *new_cmap;
guchar *new_cmap_i;
gint ncols;
gint num_layers;
gint32 *layers;
gint i, j, k;
glong pixels = 0;
glong processed = 0;
guchar pixel_map[256];
gboolean valid[256];
cmap = gimp_image_get_colormap (image_ID, &ncols);
g_return_val_if_fail (cmap != NULL, FALSE);
g_return_val_if_fail (ncols > 0, FALSE);
if (num_colors != ncols)
{
g_message (_("Invalid remap array was passed to remap function"));
return FALSE;
}
for (i = 0; i < ncols; i++)
valid[i] = FALSE;
for (i = 0; i < ncols; i++)
{
if (map[i] >= ncols)
{
g_message (_("Invalid remap array was passed to remap function"));
return FALSE;
}
valid[map[i]] = TRUE;
pixel_map[map[i]] = i;
}
for (i = 0; i < ncols; i++)
if (valid[i] == FALSE)
{
g_message (_("Invalid remap array was passed to remap function"));
return FALSE;
}
new_cmap = g_new (guchar, ncols * 3);
new_cmap_i = new_cmap;
for (i = 0; i < ncols; i++)
{
j = map[i] * 3;
*new_cmap_i++ = cmap[j];
*new_cmap_i++ = cmap[j + 1];
*new_cmap_i++ = cmap[j + 2];
}
gimp_image_undo_group_start (image_ID);
gimp_image_set_colormap (image_ID, new_cmap, ncols);
g_free (cmap);
g_free (new_cmap);
gimp_progress_init (_("Rearranging the colormap"));
layers = gimp_image_get_layers (image_ID, &num_layers);
for (k = 0; k < num_layers; k++)
pixels +=
gimp_drawable_width (layers[k]) * gimp_drawable_height (layers[k]);
for (k = 0; k < num_layers; k++)
{
GimpDrawable *drawable;
GimpPixelRgn src_rgn, dest_rgn;
gint width, height, bytespp;
gint update;
gpointer pr;
drawable = gimp_drawable_get (layers[k]);
width = drawable->width;
height = drawable->height;
bytespp = drawable->bpp;
gimp_pixel_rgn_init (&src_rgn,
drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&dest_rgn,
drawable, 0, 0, width, height, TRUE, TRUE);
for (pr = gimp_pixel_rgns_register (2, &src_rgn, &dest_rgn), update = 0;
pr != NULL;
pr = gimp_pixel_rgns_process (pr), update++)
{
const guchar *src_row = src_rgn.data;
guchar *dest_row = dest_rgn.data;
for (i = 0; i < src_rgn.h; i++)
{
const guchar *src = src_row;
guchar *dest = dest_row;
if (bytespp == 1)
{
for (j = 0; j < src_rgn.w; j++)
*dest++ = pixel_map[*src++];
}
else
{
for (j = 0; j < src_rgn.w; j++)
{
*dest++ = pixel_map[*src++];
*dest++ = *src++;
}
}
src_row += src_rgn.rowstride;
dest_row += dest_rgn.rowstride;
}
processed += src_rgn.w * src_rgn.h;
update %= 16;
if (update == 0)
gimp_progress_update ((gdouble) processed / pixels);
}
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
gimp_drawable_update (drawable->drawable_id, 0, 0, width, height);
gimp_drawable_detach (drawable);
}
gimp_progress_update (1.0);
gimp_image_undo_group_end (image_ID);
return TRUE;
}
/* dialog */
#define RESPONSE_RESET 1
enum
{
COLOR_INDEX,
COLOR_INDEX_TEXT,
COLOR_RGB,
COLOR_H,
COLOR_S,
COLOR_V,
NUM_COLS
};
static GtkUIManager *remap_ui = NULL;
static gboolean remap_run = FALSE;
static gint reverse_order[256];
static void
remap_sort (GtkTreeSortable *store,
gint column,
GtkSortType order)
{
gtk_tree_sortable_set_sort_column_id (store, column, order);
gtk_tree_sortable_set_sort_column_id (store,
GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID, 0);
}
static void
remap_sort_callback (GtkAction *action,
GtkTreeSortable *store)
{
const gchar *name = gtk_action_get_name (action);
gint column = GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID;
g_return_if_fail (g_str_has_prefix (name, "sort-"));
if (strncmp (name + 5, "hue", 3) == 0)
column = COLOR_H;
else if (strncmp (name + 5, "sat", 3) == 0)
column = COLOR_S;
else if (strncmp (name + 5, "val", 3) == 0)
column = COLOR_V;
remap_sort (store, column, GTK_SORT_ASCENDING);
}
static void
remap_reset_callback (GtkAction *action,
GtkTreeSortable *store)
{
remap_sort (store, COLOR_INDEX, GTK_SORT_ASCENDING);
}
static void
remap_reverse_callback (GtkAction *action,
GtkListStore *store)
{
gtk_list_store_reorder (store, reverse_order);
}
static GtkUIManager *
remap_ui_manager_new (GtkWidget *window,
GtkListStore *store)
{
static const GtkActionEntry actions[] =
{
{
"sort-hue", NULL, N_("Sort on Hue"), NULL, NULL,
G_CALLBACK (remap_sort_callback)
},
{
"sort-sat", NULL, N_("Sort on Saturation"), NULL, NULL,
G_CALLBACK (remap_sort_callback)
},
{
"sort-val", NULL, N_("Sort on Value"), NULL, NULL,
G_CALLBACK (remap_sort_callback)
},
{
"reverse", NULL, N_("Reverse Order"), NULL, NULL,
G_CALLBACK (remap_reverse_callback)
},
{
"reset", GIMP_STOCK_RESET, N_("Reset Order"), NULL, NULL,
G_CALLBACK (remap_reset_callback)
},
};
GtkUIManager *ui_manager = gtk_ui_manager_new ();
GtkActionGroup *group = gtk_action_group_new ("Actions");
GError *error = NULL;
gtk_action_group_set_translation_domain (group, NULL);
gtk_action_group_add_actions (group, actions, G_N_ELEMENTS (actions), store);
gtk_ui_manager_insert_action_group (ui_manager, group, -1);
g_object_unref (group);
gtk_ui_manager_add_ui_from_string (ui_manager,
"<ui>"
" <popup name=\"remap-popup\">"
" <menuitem action=\"sort-hue\" />"
" <menuitem action=\"sort-sat\" />"
" <menuitem action=\"sort-val\" />"
" <separator />"
" <menuitem action=\"reverse\" />"
" <menuitem action=\"reset\" />"
" </popup>"
"</ui>",
-1, &error);
if (error)
{
g_warning ("error parsing ui: %s", error->message);
g_clear_error (&error);
}
return ui_manager;
}
static gboolean
remap_popup_menu (GtkWidget *widget,
GdkEventButton *event)
{
GtkWidget *menu = gtk_ui_manager_get_widget (remap_ui, "/remap-popup");
gtk_menu_set_screen (GTK_MENU (menu), gtk_widget_get_screen (widget));
gtk_menu_popup (GTK_MENU (menu),
NULL, NULL, NULL, NULL,
event ? event->button : 0,
event ? event->time : gtk_get_current_event_time ());
return TRUE;
}
static gboolean
remap_button_press (GtkWidget *widget,
GdkEventButton *event)
{
if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
return remap_popup_menu (widget, event);
return FALSE;
}
static void
remap_response (GtkWidget *dialog,
gint response_id,
GtkTreeSortable *store)
{
switch (response_id)
{
case RESPONSE_RESET:
remap_reset_callback (NULL, store);
break;
case GTK_RESPONSE_OK:
remap_run = TRUE;
/* fallthrough */
default:
gtk_main_quit ();
break;
}
}
static gboolean
remap_dialog (gint32 image_ID,
guchar *map)
{
GtkWidget *dialog;
GtkWidget *vbox;
GtkWidget *box;
GtkWidget *iconview;
GtkListStore *store;
GtkCellRenderer *renderer;
GtkTreeIter iter;
guchar *cmap;
gint ncols, i;
gboolean valid;
gimp_ui_init (PLUG_IN_BINARY, FALSE);
dialog = gimp_dialog_new (_("Rearrange Colormap"), PLUG_IN_BINARY,
NULL, 0,
gimp_standard_help_func, PLUG_IN_PROC_REMAP,
GIMP_STOCK_RESET, RESPONSE_RESET,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
RESPONSE_RESET,
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_container_add (GTK_CONTAINER (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
vbox);
cmap = gimp_image_get_colormap (image_ID, &ncols);
g_return_val_if_fail ((ncols > 0) && (ncols <= 256), FALSE);
store = gtk_list_store_new (NUM_COLS,
G_TYPE_INT, G_TYPE_STRING, GIMP_TYPE_RGB,
G_TYPE_DOUBLE, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
for (i = 0; i < ncols; i++)
{
GimpRGB rgb;
GimpHSV hsv;
gint index = map[i];
gchar *text = g_strdup_printf ("%d", index);
gimp_rgb_set_uchar (&rgb,
cmap[index * 3],
cmap[index * 3 + 1],
cmap[index * 3 + 2]);
gimp_rgb_to_hsv (&rgb, &hsv);
reverse_order[i] = ncols - i - 1;
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
COLOR_INDEX, index,
COLOR_INDEX_TEXT, text,
COLOR_RGB, &rgb,
COLOR_H, hsv.h,
COLOR_S, hsv.s,
COLOR_V, hsv.v,
-1);
g_free (text);
}
g_free (cmap);
remap_ui = remap_ui_manager_new (dialog, store);
iconview = gtk_icon_view_new_with_model (GTK_TREE_MODEL (store));
g_object_unref (store);
gtk_container_add (GTK_CONTAINER (vbox), iconview);
gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (iconview),
GTK_SELECTION_SINGLE);
gtk_icon_view_set_orientation (GTK_ICON_VIEW (iconview),
GTK_ORIENTATION_VERTICAL);
gtk_icon_view_set_columns (GTK_ICON_VIEW (iconview), 16);
gtk_icon_view_set_row_spacing (GTK_ICON_VIEW (iconview), 0);
gtk_icon_view_set_column_spacing (GTK_ICON_VIEW (iconview), 0);
gtk_icon_view_set_reorderable (GTK_ICON_VIEW (iconview), TRUE);
renderer = gimp_cell_renderer_color_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (iconview), renderer, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (iconview), renderer,
"color", COLOR_RGB,
NULL);
g_object_set (renderer,
"width", 24,
NULL);
renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (iconview), renderer, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (iconview), renderer,
"text", COLOR_INDEX_TEXT,
NULL);
g_object_set (renderer,
"size-points", 6.0,
"xalign", 0.5,
"ypad", 0,
NULL);
g_signal_connect (iconview, "popup-menu",
G_CALLBACK (remap_popup_menu),
NULL);
g_signal_connect (iconview, "button-press-event",
G_CALLBACK (remap_button_press),
NULL);
box = gimp_hint_box_new (_("Drag and drop colors to rearrange the colormap. "
"The numbers shown are the original indices. "
"Right-click for a menu with sort options."));
gtk_box_pack_start (GTK_BOX (vbox), box, FALSE, FALSE, 0);
gtk_widget_show (box);
g_signal_connect (dialog, "response",
G_CALLBACK (remap_response),
store);
gtk_widget_show_all (dialog);
gtk_main ();
i = 0;
for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter);
valid;
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (store), &iter))
{
gint index;
gtk_tree_model_get (GTK_TREE_MODEL (store), &iter,
COLOR_INDEX, &index,
-1);
map[i++] = index;
}
gtk_widget_destroy (dialog);
return remap_run;
}
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