mirror of
https://gitlab.gnome.org/GNOME/gimp
synced 2024-10-23 04:51:44 +00:00
![Sven Neumann](/assets/img/avatar_default.png)
2004-09-29 Sven Neumann <sven@gimp.org> * libgimpwidgets/gimppreview.[ch] * libgimpwidgets/gimpwidgets.def: added gimp_preview_draw_buffer(). * libgimp/gimpaspectpreview.[ch] * libgimp/gimpdrawablepreview.[ch] * libgimp/gimpui.def: removed the public draw_buffer API. Implement the virtual GimpPreview::draw_buffer method instead. * plug-ins/common/cartoon.c * plug-ins/common/deinterlace.c * plug-ins/common/despeckle.c * plug-ins/common/dog.c * plug-ins/common/edge.c * plug-ins/common/engrave.c * plug-ins/common/exchange.c * plug-ins/common/gauss.c * plug-ins/common/grid.c * plug-ins/common/neon.c * plug-ins/common/noisify.c * plug-ins/common/oilify.c * plug-ins/common/photocopy.c * plug-ins/common/plasma.c * plug-ins/common/sel_gauss.c * plug-ins/common/sharpen.c * plug-ins/common/shift.c * plug-ins/common/snoise.c * plug-ins/common/sobel.c * plug-ins/common/spread.c * plug-ins/common/struc.c: changed accordingly. Don't pass the preview around as GimpDrawablePreview or GimpAspectPreview. It should whenever possible be accessed as GimpPreview.
578 lines
16 KiB
C
578 lines
16 KiB
C
/* The GIMP -- an image manipulation program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
* Copyright (C) 1997 Eiichi Takamori
|
|
* Copyright (C) 1996, 1997 Torsten Martinsen
|
|
*
|
|
* 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 <gtk/gtk.h>
|
|
|
|
#include <libgimp/gimp.h>
|
|
#include <libgimp/gimpui.h>
|
|
|
|
#include "libgimp/stdplugins-intl.h"
|
|
|
|
|
|
/* Some useful macros */
|
|
|
|
#define SCALE_WIDTH 125
|
|
#define TILE_CACHE_SIZE 16
|
|
|
|
typedef struct
|
|
{
|
|
gint height;
|
|
gboolean limit;
|
|
gboolean preview;
|
|
} EngraveValues;
|
|
|
|
static void query (void);
|
|
static void run (const gchar *name,
|
|
gint nparams,
|
|
const GimpParam *param,
|
|
gint *nreturn_vals,
|
|
GimpParam **return_vals);
|
|
|
|
static gboolean engrave_dialog (GimpDrawable *drawable);
|
|
|
|
static void engrave (GimpDrawable *drawable,
|
|
GimpPreview *preview);
|
|
|
|
#if 0
|
|
static void engrave_large (GimpDrawable *drawable,
|
|
gint height,
|
|
gboolean limit,
|
|
GimpPreview *preview);
|
|
#endif
|
|
|
|
static void engrave_small (GimpDrawable *drawable,
|
|
gint height,
|
|
gboolean limit,
|
|
gint tile_width,
|
|
GimpPreview *preview);
|
|
|
|
static void engrave_sub (gint height,
|
|
gboolean limit,
|
|
gint bpp,
|
|
gint color_n);
|
|
|
|
GimpPlugInInfo PLUG_IN_INFO =
|
|
{
|
|
NULL, /* init_proc */
|
|
NULL, /* quit_proc */
|
|
query, /* query_proc */
|
|
run, /* run_proc */
|
|
};
|
|
|
|
static EngraveValues pvals =
|
|
{
|
|
10, /* height */
|
|
FALSE, /* limit */
|
|
TRUE /* preview */
|
|
};
|
|
|
|
MAIN ()
|
|
|
|
static void
|
|
query (void)
|
|
{
|
|
static GimpParamDef args[] =
|
|
{
|
|
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
|
|
{ GIMP_PDB_IMAGE, "image", "Input image (unused)" },
|
|
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
|
|
{ GIMP_PDB_INT32, "height", "Resolution in pixels" },
|
|
{ GIMP_PDB_INT32, "limit", "If true, limit line width" }
|
|
};
|
|
|
|
gimp_install_procedure ("plug_in_engrave",
|
|
"Engrave the contents of the specified drawable",
|
|
"Creates a black-and-white 'engraved' version of an image as seen in old illustrations",
|
|
"Spencer Kimball & Peter Mattis, Eiichi Takamori, Torsten Martinsen",
|
|
"Spencer Kimball & Peter Mattis, Eiichi Takamori, Torsten Martinsen",
|
|
"1995,1996,1997",
|
|
N_("En_grave..."),
|
|
"RGBA, GRAYA",
|
|
GIMP_PLUGIN,
|
|
G_N_ELEMENTS (args), 0,
|
|
args, NULL);
|
|
|
|
gimp_plugin_menu_register ("plug_in_engrave",
|
|
N_("<Image>/Filters/Distorts"));
|
|
}
|
|
|
|
static void
|
|
run (const gchar *name,
|
|
gint nparams,
|
|
const GimpParam *param,
|
|
gint *nreturn_vals,
|
|
GimpParam **return_vals)
|
|
{
|
|
static GimpParam values[1];
|
|
GimpDrawable *drawable;
|
|
GimpRunMode run_mode;
|
|
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
|
|
|
|
run_mode = param[0].data.d_int32;
|
|
|
|
INIT_I18N ();
|
|
|
|
*nreturn_vals = 1;
|
|
*return_vals = values;
|
|
|
|
values[0].type = GIMP_PDB_STATUS;
|
|
values[0].data.d_status = status;
|
|
|
|
/* Get the specified drawable */
|
|
drawable = gimp_drawable_get (param[2].data.d_drawable);
|
|
|
|
switch (run_mode)
|
|
{
|
|
case GIMP_RUN_INTERACTIVE:
|
|
/* Possibly retrieve data */
|
|
gimp_get_data ("plug_in_engrave", &pvals);
|
|
|
|
/* First acquire information with a dialog */
|
|
if (!engrave_dialog (drawable))
|
|
{
|
|
gimp_drawable_detach (drawable);
|
|
return;
|
|
}
|
|
break;
|
|
|
|
case GIMP_RUN_NONINTERACTIVE:
|
|
/* Make sure all the arguments are there! */
|
|
if (nparams != 5)
|
|
status = GIMP_PDB_CALLING_ERROR;
|
|
if (status == GIMP_PDB_SUCCESS)
|
|
{
|
|
pvals.height = param[3].data.d_int32;
|
|
pvals.limit = (param[4].data.d_int32) ? TRUE : FALSE;
|
|
}
|
|
if ((status == GIMP_PDB_SUCCESS) &&
|
|
pvals.height < 0)
|
|
status = GIMP_PDB_CALLING_ERROR;
|
|
break;
|
|
|
|
case GIMP_RUN_WITH_LAST_VALS:
|
|
/* Possibly retrieve data */
|
|
gimp_get_data ("plug_in_engrave", &pvals);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (status == GIMP_PDB_SUCCESS)
|
|
{
|
|
gimp_progress_init (_("Engraving..."));
|
|
gimp_tile_cache_ntiles (TILE_CACHE_SIZE);
|
|
|
|
engrave (drawable, NULL);
|
|
|
|
if (run_mode != GIMP_RUN_NONINTERACTIVE)
|
|
gimp_displays_flush ();
|
|
|
|
/* Store data */
|
|
if (run_mode == GIMP_RUN_INTERACTIVE)
|
|
gimp_set_data ("plug_in_engrave", &pvals, sizeof (EngraveValues));
|
|
}
|
|
values[0].data.d_status = status;
|
|
|
|
gimp_drawable_detach (drawable);
|
|
}
|
|
|
|
static gboolean
|
|
engrave_dialog (GimpDrawable *drawable)
|
|
{
|
|
GtkWidget *dialog;
|
|
GtkWidget *main_vbox;
|
|
GtkWidget *preview;
|
|
GtkWidget *table;
|
|
GtkWidget *toggle;
|
|
GtkObject *adj;
|
|
gboolean run;
|
|
|
|
gimp_ui_init ("engrave", FALSE);
|
|
|
|
dialog = gimp_dialog_new (_("Engrave"), "engrave",
|
|
NULL, 0,
|
|
gimp_standard_help_func, "plug-in-engrave",
|
|
|
|
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
|
|
GTK_STOCK_OK, GTK_RESPONSE_OK,
|
|
|
|
NULL);
|
|
|
|
main_vbox = gtk_vbox_new (FALSE, 12);
|
|
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
|
|
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog)->vbox), main_vbox);
|
|
gtk_widget_show (main_vbox);
|
|
|
|
preview = gimp_drawable_preview_new (drawable, &pvals.preview);
|
|
gtk_box_pack_start_defaults (GTK_BOX (main_vbox), preview);
|
|
gtk_widget_show (preview);
|
|
g_signal_connect_swapped (preview, "invalidated",
|
|
G_CALLBACK (engrave),
|
|
drawable);
|
|
|
|
table = gtk_table_new (1, 3, FALSE);
|
|
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
|
|
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
|
|
gtk_widget_show (table);
|
|
|
|
adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
|
|
_("_Height:"), SCALE_WIDTH, 0,
|
|
pvals.height, 2.0, 16.0, 1.0, 4.0, 0,
|
|
TRUE, 0, 0,
|
|
NULL, NULL);
|
|
g_signal_connect (adj, "value_changed",
|
|
G_CALLBACK (gimp_int_adjustment_update),
|
|
&pvals.height);
|
|
g_signal_connect_swapped (adj, "value_changed",
|
|
G_CALLBACK (gimp_preview_invalidate),
|
|
preview);
|
|
|
|
toggle = gtk_check_button_new_with_mnemonic (_("_Limit line width"));
|
|
gtk_box_pack_start (GTK_BOX (main_vbox), toggle, FALSE, FALSE, 0);
|
|
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), pvals.limit);
|
|
gtk_widget_show (toggle);
|
|
|
|
g_signal_connect (toggle, "toggled",
|
|
G_CALLBACK (gimp_toggle_button_update),
|
|
&pvals.limit);
|
|
g_signal_connect_swapped (toggle, "toggled",
|
|
G_CALLBACK (gimp_preview_invalidate),
|
|
preview);
|
|
|
|
gtk_widget_show (dialog);
|
|
|
|
run = (gimp_dialog_run (GIMP_DIALOG (dialog)) == GTK_RESPONSE_OK);
|
|
|
|
gtk_widget_destroy (dialog);
|
|
|
|
return run;
|
|
}
|
|
|
|
/* Engrave interface functions */
|
|
|
|
static void
|
|
engrave (GimpDrawable *drawable,
|
|
GimpPreview *preview)
|
|
{
|
|
gint tile_width;
|
|
gint height;
|
|
gboolean limit;
|
|
|
|
tile_width = gimp_tile_width();
|
|
height = pvals.height;
|
|
limit = pvals.limit;
|
|
/* [DindinX] this test is always false since
|
|
* tile_width == 64 and height <= 16 */
|
|
#if 0
|
|
if (height >= tile_width)
|
|
engrave_large (drawable, height, limit, preview);
|
|
else
|
|
#endif
|
|
engrave_small (drawable, height, limit, tile_width, preview);
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
engrave_large (GimpDrawable *drawable,
|
|
gint height,
|
|
gboolean limit,
|
|
GimpPreview *preview)
|
|
{
|
|
GimpPixelRgn src_rgn, dest_rgn;
|
|
guchar *src_row, *dest_row;
|
|
guchar *src, *dest;
|
|
gulong *average;
|
|
gint row, col, b, bpp;
|
|
gint x, y, y_step, inten, v;
|
|
gulong count;
|
|
gint x1, y1, x2, y2;
|
|
gint progress, max_progress;
|
|
gpointer pr;
|
|
|
|
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
|
|
|
|
bpp = (gimp_drawable_is_rgb (drawable->drawable_id)) ? 3 : 1;
|
|
average = g_new (gulong, bpp);
|
|
|
|
/* Initialize progress */
|
|
progress = 0;
|
|
max_progress = 2 * (x2 - x1) * (y2 - y1);
|
|
|
|
for (y = y1; y < y2; y += height - (y % height))
|
|
{
|
|
for (x = x1; x < x2; ++x)
|
|
{
|
|
y_step = height - (y % height);
|
|
y_step = MIN (y_step, x2 - x);
|
|
|
|
gimp_pixel_rgn_init (&src_rgn, drawable, x, y, 1, y_step,
|
|
FALSE, FALSE);
|
|
for (b = 0; b < bpp; b++)
|
|
average[b] = 0;
|
|
count = 0;
|
|
|
|
for (pr = gimp_pixel_rgns_register (1, &src_rgn);
|
|
pr != NULL;
|
|
pr = gimp_pixel_rgns_process(pr))
|
|
{
|
|
src_row = src_rgn.data;
|
|
for (row = 0; row < src_rgn.h; row++)
|
|
{
|
|
src = src_row;
|
|
for (col = 0; col < src_rgn.w; col++)
|
|
{
|
|
for (b = 0; b < bpp; b++)
|
|
average[b] += src[b];
|
|
src += src_rgn.bpp;
|
|
count += 1;
|
|
}
|
|
src_row += src_rgn.rowstride;
|
|
}
|
|
/* Update progress */
|
|
progress += src_rgn.w * src_rgn.h;
|
|
gimp_progress_update ((double) progress / (double) max_progress);
|
|
}
|
|
|
|
if (count > 0)
|
|
for (b = 0; b < bpp; b++)
|
|
average[b] = (guchar) (average[b] / count);
|
|
|
|
if (bpp < 3)
|
|
inten = average[0] / 254.0 * height;
|
|
else
|
|
inten = GIMP_RGB_INTENSITY (average[0],
|
|
average[1],
|
|
average[2]) / 254.0 * height;
|
|
|
|
gimp_pixel_rgn_init (&dest_rgn,
|
|
drawable, x, y, 1, y_step, TRUE, TRUE);
|
|
for (pr = gimp_pixel_rgns_register (1, &dest_rgn);
|
|
pr != NULL;
|
|
pr = gimp_pixel_rgns_process(pr))
|
|
{
|
|
dest_row = dest_rgn.data;
|
|
for (row = 0; row < dest_rgn.h; row++)
|
|
{
|
|
dest = dest_row;
|
|
v = inten > row ? 255 : 0;
|
|
if (limit)
|
|
{
|
|
if (row == 0)
|
|
v = 255;
|
|
else if (row == height-1)
|
|
v = 0;
|
|
}
|
|
for (b = 0; b < bpp; b++)
|
|
dest[b] = v;
|
|
dest_row += dest_rgn.rowstride;
|
|
}
|
|
/* Update progress */
|
|
progress += dest_rgn.w * dest_rgn.h;
|
|
gimp_progress_update((double) progress / (double) max_progress);
|
|
}
|
|
}
|
|
}
|
|
|
|
g_free (average);
|
|
|
|
/* update the engraved region */
|
|
gimp_drawable_flush( drawable);
|
|
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
|
|
gimp_drawable_update (drawable->drawable_id, x1, y1, x2 - x1, y2 - y1);
|
|
}
|
|
#endif
|
|
|
|
typedef struct
|
|
{
|
|
gint x, y, h;
|
|
gint width;
|
|
guchar *data;
|
|
} PixelArea;
|
|
|
|
PixelArea area;
|
|
|
|
static void
|
|
engrave_small (GimpDrawable *drawable,
|
|
gint line_height,
|
|
gboolean limit,
|
|
gint tile_width,
|
|
GimpPreview *preview)
|
|
{
|
|
GimpPixelRgn src_rgn, dest_rgn;
|
|
gint bpp, color_n;
|
|
gint x1, y1, x2, y2;
|
|
gint width, height;
|
|
gint progress, max_progress;
|
|
|
|
/*
|
|
For speed efficiency, operates on PixelAreas, whose each width and
|
|
height are less than tile size.
|
|
|
|
If both ends of area cannot be divided by line_height ( as
|
|
x1%line_height != 0 etc.), operates on the remainder pixels.
|
|
*/
|
|
|
|
if (preview)
|
|
{
|
|
gimp_preview_get_position (preview, &x1, &y1);
|
|
gimp_preview_get_size (preview, &width, &height);
|
|
|
|
x2 = x1 + width;
|
|
y2 = y1 + height;
|
|
}
|
|
else
|
|
{
|
|
gimp_drawable_mask_bounds (drawable->drawable_id, &x1, &y1, &x2, &y2);
|
|
|
|
width = x2 - x1;
|
|
height = y2 - y1;
|
|
}
|
|
gimp_pixel_rgn_init (&src_rgn, drawable,
|
|
x1, y1, width, height, FALSE, FALSE);
|
|
gimp_pixel_rgn_init (&dest_rgn, drawable,
|
|
x1, y1, width, height, (preview == NULL), TRUE);
|
|
|
|
/* Initialize progress */
|
|
progress = 0;
|
|
max_progress = width * height;
|
|
|
|
bpp = drawable->bpp;
|
|
color_n = (gimp_drawable_is_rgb (drawable->drawable_id)) ? 3 : 1;
|
|
|
|
area.width = (tile_width / line_height) * line_height;
|
|
area.data = g_new(guchar, (glong) bpp * area.width * area.width);
|
|
|
|
for (area.y = y1; area.y < y2;
|
|
area.y += area.width - (area.y % area.width))
|
|
{
|
|
area.h = area.width - (area.y % area.width);
|
|
area.h = MIN(area.h, y2 - area.y);
|
|
for (area.x = x1; area.x < x2; ++area.x)
|
|
{
|
|
gimp_pixel_rgn_get_rect (&src_rgn, area.data, area.x, area.y, 1,
|
|
area.h);
|
|
|
|
engrave_sub (line_height, limit, bpp, color_n);
|
|
|
|
gimp_pixel_rgn_set_rect (&dest_rgn, area.data,
|
|
area.x, area.y, 1, area.h);
|
|
}
|
|
if (!preview)
|
|
{
|
|
/* Update progress */
|
|
progress += area.h * width;
|
|
gimp_progress_update ((double) progress / (double) max_progress);
|
|
}
|
|
}
|
|
|
|
g_free(area.data);
|
|
|
|
/* update the engraved region */
|
|
if (preview)
|
|
{
|
|
gimp_drawable_preview_draw_region (GIMP_DRAWABLE_PREVIEW (preview),
|
|
&dest_rgn);
|
|
}
|
|
else
|
|
{
|
|
gimp_drawable_flush (drawable);
|
|
gimp_drawable_merge_shadow (drawable->drawable_id, TRUE);
|
|
gimp_drawable_update (drawable->drawable_id, x1, y1, x2 - x1, y2 - y1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
engrave_sub (gint height,
|
|
gint limit,
|
|
gint bpp,
|
|
gint color_n)
|
|
{
|
|
glong average[3]; /* color_n <= 3 */
|
|
gint y, h, inten, v;
|
|
guchar *buf_row, *buf;
|
|
gint row;
|
|
gint rowstride;
|
|
gint count;
|
|
gint i;
|
|
|
|
/*
|
|
Since there's so many nested FOR's,
|
|
put a few of them here...
|
|
*/
|
|
|
|
rowstride = bpp;
|
|
|
|
for (y = area.y; y < area.y + area.h; y += height - (y % height))
|
|
{
|
|
h = height - (y % height);
|
|
h = MIN(h, area.y + area.h - y);
|
|
|
|
for (i = 0; i < color_n; i++)
|
|
average[i] = 0;
|
|
count = 0;
|
|
|
|
/* Read */
|
|
buf_row = area.data + (y - area.y) * rowstride;
|
|
|
|
for (row = 0; row < h; row++)
|
|
{
|
|
buf = buf_row;
|
|
for (i = 0; i < color_n; i++)
|
|
average[i] += buf[i];
|
|
count++;
|
|
buf_row += rowstride;
|
|
}
|
|
|
|
/* Average */
|
|
if (count > 0)
|
|
for (i = 0; i < color_n; i++)
|
|
average[i] /= count;
|
|
|
|
if (bpp < 3)
|
|
inten = average[0] / 254.0 * height;
|
|
else
|
|
inten = GIMP_RGB_INTENSITY (average[0],
|
|
average[1],
|
|
average[2]) / 254.0 * height;
|
|
|
|
/* Write */
|
|
buf_row = area.data + (y - area.y) * rowstride;
|
|
|
|
for (row = 0; row < h; row++)
|
|
{
|
|
buf = buf_row;
|
|
v = inten > row ? 255 : 0;
|
|
if (limit)
|
|
{
|
|
if (row == 0)
|
|
v = 255;
|
|
else if (row == height-1)
|
|
v = 0;
|
|
}
|
|
for (i = 0; i < color_n; i++)
|
|
buf[i] = v;
|
|
buf_row += rowstride;
|
|
}
|
|
}
|
|
}
|