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gimp/plug-ins/common/grid.c

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/* The GIMP -- an 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 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.
*/
/* Original plug-in coded by Tim Newsome.
*
* Changed to make use of real-life units by Sven Neumann <sven@gimp.org>.
*
* The interface code is heavily commented in the hope that it will
* help other plug-in developers to adapt their plug-ins to make use
* of the gimp_size_entry functionality.
*
* For more info see libgimp/gimpsizeentry.h
*/
#include <stdlib.h>
#include <stdio.h>
#include "gtk/gtk.h"
#include "libgimp/gimp.h"
#include "libgimp/gimpintl.h"
#include "libgimp/gimpchainbutton.h"
#include "libgimp/gimpsizeentry.h"
/* Declare local functions. */
static void query (void);
static void run (char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
static gint dialog (gint32 image_ID,
GDrawable *drawable);
static void doit (GDrawable *drawable);
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
gint bytes;
gint sx1, sy1, sx2, sy2;
int run_flag = 0;
typedef struct
{
gint width;
gint height;
gint x_offset;
gint y_offset;
}
config;
config my_config =
{
16, 16, /* width, height */
0, 0, /* x_offset, y_offset */
};
MAIN ()
static
void query (void)
{
static GParamDef args[] =
{
{PARAM_INT32, "run_mode", "Interactive, non-interactive"},
{PARAM_IMAGE, "image", "Input image"},
{PARAM_DRAWABLE, "drawable", "Input drawable"},
{PARAM_INT32, "width", "Width"},
{PARAM_INT32, "height", "Height"},
{PARAM_INT32, "x_offset", "X Offset"},
{PARAM_INT32, "y_offset", "Y Offset"},
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof (args) / sizeof (args[0]);
static int nreturn_vals = 0;
gimp_install_procedure ("plug_in_grid",
"Draws a grid.",
"",
"Tim Newsome",
"Tim Newsome, Sven Neumann",
"1997, 1999",
"<Image>/Filters/Render/Grid",
"RGB*, GRAY*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void
run (char *name,
int n_params,
GParam *param,
int *nreturn_vals,
GParam **return_vals)
{
static GParam values[1];
GDrawable *drawable;
gint32 image_ID;
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
run_mode = param[0].data.d_int32;
image_ID = param[1].data.d_int32;
drawable = gimp_drawable_get (param[2].data.d_drawable);
if (run_mode == RUN_NONINTERACTIVE)
{
if (n_params != 7)
{
status = STATUS_CALLING_ERROR;
}
if( status == STATUS_SUCCESS)
{
my_config.width = param[3].data.d_int32;
my_config.height = param[4].data.d_int32;
my_config.x_offset = param[5].data.d_int32;
my_config.y_offset = param[6].data.d_int32;
}
}
else
{
/* Possibly retrieve data */
gimp_get_data ("plug_in_grid", &my_config);
if (run_mode == RUN_INTERACTIVE)
{
if (!dialog (image_ID, drawable))
{
/* The dialog was closed, or something similarly evil happened. */
status = STATUS_EXECUTION_ERROR;
}
}
}
if (my_config.width <= 0 || my_config.height <= 0)
{
status = STATUS_EXECUTION_ERROR;
}
if (status == STATUS_SUCCESS)
{
/* Make sure that the drawable is gray or RGB color */
if (gimp_drawable_color (drawable->id) || gimp_drawable_gray (drawable->id))
{
gimp_progress_init (_("Drawing Grid..."));
gimp_tile_cache_ntiles (2 * (drawable->width / gimp_tile_width () + 1));
doit (drawable);
if (run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (run_mode == RUN_INTERACTIVE)
gimp_set_data ("plug_in_grid", &my_config, sizeof (my_config));
}
else
{
status = STATUS_EXECUTION_ERROR;
}
gimp_drawable_detach (drawable);
}
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
}
static void
doit (GDrawable * drawable)
{
GPixelRgn srcPR, destPR;
gint width, height;
int w, h, b;
guchar *copybuf;
guchar color[4] = {0, 0, 0, 0};
/* Get the input area. This is the bounding box of the selection in
* the image (or the entire image if there is no selection). Only
* operating on the input area is simply an optimization. It doesn't
* need to be done for correct operation. (It simply makes it go
* faster, since fewer pixels need to be operated on).
*/
gimp_drawable_mask_bounds (drawable->id, &sx1, &sy1, &sx2, &sy2);
/* Get the size of the input image. (This will/must be the same
* as the size of the output image.
*/
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
if (gimp_drawable_has_alpha (drawable->id))
{
color[bytes - 1] = 0xff;
}
/* initialize the pixel regions */
gimp_pixel_rgn_init (&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init (&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
/* First off, copy the old one to the new one. */
copybuf = malloc (width * bytes);
for (h = sy1; h < sy2; h++)
{
gimp_pixel_rgn_get_row (&srcPR, copybuf, sx1, h, (sx2-sx1));
if ((h - my_config.y_offset) % my_config.height == 0)
{ /* Draw row */
for (w = sx1; w < sx2; w++)
{
for (b = 0; b < bytes; b++)
{
copybuf[(w-sx1) * bytes + b] = color[b];
}
}
}
else
{
for (w = sx1; w < sx2; w++)
{
if ((w - my_config.x_offset) % my_config.width == 0)
{
for (b = 0; b < bytes; b++)
{
copybuf[(w-sx1) * bytes + b] = color[b];
}
}
}
}
gimp_pixel_rgn_set_row (&destPR, copybuf, sx1, h , (sx2-sx1) );
gimp_progress_update ((double) h / (double) (sy2 - sy1));
}
free (copybuf);
/* update the timred region */
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, sx1, sy1, sx2 - sx1, sy2 - sy1);
}
/***************************************************
* GUI stuff
*/
static void
close_callback (GtkWidget * widget, gpointer data)
{
gtk_main_quit ();
}
static void
ok_callback (GtkWidget * widget, gpointer data)
{
GtkWidget *entry;
run_flag = 1;
entry = gtk_object_get_data (GTK_OBJECT (data), "size");
my_config.width = (int)(gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0) + 0.5);
my_config.height = (int)(gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1) + 0.5);
entry = gtk_object_get_data (GTK_OBJECT (data), "offset");
my_config.x_offset = (int)(gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 0) + 0.5);
my_config.y_offset = (int)(gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (entry), 1) + 0.5);
gtk_widget_destroy (GTK_WIDGET (data));
}
static void
entry_callback (GtkWidget * widget, gpointer data)
{
static gdouble x = -1.0;
static gdouble y = -1.0;
gdouble new_x;
gdouble new_y;
new_x = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
new_y = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
if (gimp_chain_button_get_active (GIMP_CHAIN_BUTTON (data)))
{
if (new_x != x)
{
y = new_y = x = new_x;
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 1, y);
}
if (new_y != y)
{
x = new_x = y = new_y;
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (widget), 0, x);
}
}
else
{
if (new_x != x)
x = new_x;
if (new_y != y)
y = new_y;
}
}
static gint
dialog (gint32 image_ID,
GDrawable *drawable)
{
GtkWidget *dlg;
GtkWidget *hbbox;
GtkWidget *button;
GtkWidget *hbox;
GtkWidget *size;
GtkWidget *offset;
GUnit unit;
gdouble xres;
gdouble yres;
gchar **argv;
gint argc;
argc = 1;
argv = g_new (gchar *, 1);
argv[0] = g_strdup ("grid");
gtk_init (&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
dlg = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dlg), _("Grid"));
gtk_window_position (GTK_WINDOW (dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
(GtkSignalFunc) close_callback, NULL);
/* Get the image resolution and unit */
gimp_image_get_resolution (image_ID, &xres, &yres);
unit = gimp_image_get_unit (image_ID);
/* Action area */
gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (dlg)->action_area), 2);
gtk_box_set_homogeneous (GTK_BOX (GTK_DIALOG (dlg)->action_area), FALSE);
hbbox = gtk_hbutton_box_new ();
gtk_button_box_set_spacing (GTK_BUTTON_BOX (hbbox), 4);
gtk_box_pack_end (GTK_BOX (GTK_DIALOG (dlg)->action_area), hbbox, FALSE, FALSE, 0);
gtk_widget_show (hbbox);
button = gtk_button_new_with_label (_("OK"));
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) ok_callback,
dlg);
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_grab_default (button);
gtk_widget_show (button);
button = gtk_button_new_with_label (_("Cancel"));
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (dlg));
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
/* The size entries */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), hbox, FALSE, FALSE, 4);
size = gimp_size_entry_new (2, /* number_of_fields */
unit, /* unit */
"%a", /* unit_format */
TRUE, /* menu_show_pixels */
TRUE, /* menu_show_percent */
FALSE, /* show_refval */
75, /* spinbutton_usize */
GIMP_SIZE_ENTRY_UPDATE_SIZE); /* update_policy */
/* set the resolution to the image resolution */
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (size), 0, xres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (size), 1, yres, TRUE);
/* set the size (in pixels) that will be treated as 0% and 100% */
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (size), 0, 0.0, (gdouble)(drawable->width));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (size), 1, 0.0, (gdouble)(drawable->height));
/* set upper and lower limits (in pixels) */
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (size), 0, 0.0, (gdouble)(drawable->width));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (size), 1, 0.0, (gdouble)(drawable->height));
/* initialize the values */
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (size), 0, (gdouble)my_config.width);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (size), 1, (gdouble)my_config.height);
/* attach labels */
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (size), _("X"), 0, 1, 0.5);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (size), _("Y"), 0, 2, 0.5);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (size), _("Size: "), 1, 0, 0.0);
/* put a chain_button under the size_entries */
button = gimp_chain_button_new (GIMP_CHAIN_BOTTOM);
if (my_config.width == my_config.height)
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (button), TRUE);
gtk_table_attach_defaults (GTK_TABLE (size), button, 1, 3, 2, 3);
gtk_widget_show (button);
/* connect to the 'value_changed' and "unit_changed" signals because we have to
take care of keeping the entries in sync when the chainbutton is active */
gtk_signal_connect (GTK_OBJECT (size), "value_changed", (GtkSignalFunc) entry_callback, button);
gtk_signal_connect (GTK_OBJECT (size), "unit_changed", (GtkSignalFunc) entry_callback, button);
gtk_box_pack_end (GTK_BOX (hbox), size, FALSE, FALSE, 4);
gtk_widget_show (size);
gtk_widget_show (hbox);
/* the offset entries */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), hbox, FALSE, FALSE, 0);
offset = gimp_size_entry_new (2, unit, "%a", TRUE, TRUE, FALSE, 75,
GIMP_SIZE_ENTRY_UPDATE_SIZE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (offset), 0, xres, TRUE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (offset), 1, yres, TRUE);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 0, 0.0, (gdouble)(drawable->width));
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (offset), 1, 0.0, (gdouble)(drawable->height));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 0, 0.0, (gdouble)(drawable->width));
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (offset), 1, 0.0, (gdouble)(drawable->height));
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 0, (gdouble)my_config.x_offset);
gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (offset), 1, (gdouble)my_config.y_offset);
gimp_size_entry_attach_label (GIMP_SIZE_ENTRY (offset), _("Offset: "), 1, 0, 0.0);
gtk_box_pack_end (GTK_BOX (hbox), offset, FALSE, FALSE, 4);
gtk_widget_show (offset);
gtk_widget_show (hbox);
gtk_widget_show (dlg);
gtk_object_set_data (GTK_OBJECT (dlg), "size", size);
gtk_object_set_data (GTK_OBJECT (dlg), "offset", offset);
gtk_main ();
gdk_flush ();
return run_flag;
}
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