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gimp/plug-ins/common/destripe.c

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/*
* Destripe filter for The GIMP -- an image manipulation
* program
*
* Copyright 1997 Marc Lehmann, heavily modified from a filter by
* Michael Sweet.
*
* 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.
*
* Contents:
*
* main() - Main entry - just call gimp_main()...
* query() - Respond to a plug-in query...
* run() - Run the filter...
* destripe() - Destripe an image.
* destripe_dialog() - Popup a dialog window...
* preview_init() - Initialize the preview window...
* preview_scroll_callback() - Update the preview when a scrollbar is moved.
* preview_update() - Update the preview window.
* preview_exit() - Free all memory used by the preview window...
* dialog_create_ivalue() - Create an integer value control...
* dialog_iscale_update() - Update the value field using the scale.
* dialog_ientry_update() - Update the value field using the text entry.
* dialog_histogram_callback()
* dialog_ok_callback() - Start the filter...
* dialog_cancel_callback() - Cancel the filter...
* dialog_close_callback() - Exit the filter dialog application.
*
* 1997/08/16 * Initial Revision.
* 1998/02/06 * Minor changes.
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "libgimp/stdplugins-intl.h"
/*
* Constants...
*/
#define PLUG_IN_NAME "plug_in_destripe"
#define PLUG_IN_VERSION "0.2"
#define PREVIEW_SIZE 200
#define SCALE_WIDTH 140
#define ENTRY_WIDTH 40
#define MAX_AVG 100
/*
* Local functions...
*/
static void query(void);
static void run(char *, int, GParam *, int *, GParam **);
static void destripe(void);
static gint destripe_dialog(void);
static void dialog_create_ivalue(char *, GtkTable *, int, gint *, int, int);
static void dialog_iscale_update(GtkAdjustment *, gint *);
static void dialog_ientry_update(GtkWidget *, gint *);
static void dialog_ok_callback(GtkWidget *, gpointer);
static void dialog_cancel_callback(GtkWidget *, gpointer);
static void dialog_close_callback(GtkWidget *, gpointer);
static void preview_init(void);
static void preview_exit(void);
static void preview_update(void);
static void preview_scroll_callback(void);
/*
* Globals...
*/
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run /* run_proc */
};
GtkWidget *preview; /* Preview widget */
int preview_width, /* Width of preview widget */
preview_height, /* Height of preview widget */
preview_x1, /* Upper-left X of preview */
preview_y1, /* Upper-left Y of preview */
preview_x2, /* Lower-right X of preview */
preview_y2; /* Lower-right Y of preview */
GtkObject *hscroll_data, /* Horizontal scrollbar data */
*vscroll_data; /* Vertical scrollbar data */
GDrawable *drawable = NULL; /* Current image */
int sel_x1, /* Selection bounds */
sel_y1,
sel_x2,
sel_y2;
int histogram = FALSE;
int img_bpp; /* Bytes-per-pixel in image */
gint run_filter = FALSE; /* True if we should run the filter */
int avg_width = 36;
/*
* 'main()' - Main entry - just call gimp_main()...
*/
MAIN()
/*
* 'query()' - Respond to a plug-in query...
*/
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, "avg_width", "Averaging filter width (default = 36)" }
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args) / sizeof(args[0]),
nreturn_vals = 0;
INIT_I18N();
gimp_install_procedure(PLUG_IN_NAME,
_("Destripe filter, used to remove vertical stripes caused by cheap scanners."),
_("This plug-in tries to remove vertical stripes from an image."),
"Marc Lehmann <pcg@goof.com>", "Marc Lehmann <pcg@goof.com>",
PLUG_IN_VERSION,
_("<Image>/Filters/Enhance/Destripe"),
"RGB*, GRAY*",
PROC_PLUG_IN, nargs, nreturn_vals, args, return_vals);
}
/*
* 'run()' - Run the filter...
*/
static void
run(char *name, /* I - Name of filter program. */
int nparams, /* I - Number of parameters passed in */
GParam *param, /* I - Parameter values */
int *nreturn_vals, /* O - Number of return values */
GParam **return_vals) /* O - Return values */
{
GRunModeType run_mode; /* Current run mode */
GStatusType status; /* Return status */
static GParam values[1]; /* Return values */
INIT_I18N_UI();
/*
* Initialize parameter data...
*/
status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
*nreturn_vals = 1;
*return_vals = values;
/*
* Get drawable information...
*/
drawable = gimp_drawable_get(param[2].data.d_drawable);
gimp_drawable_mask_bounds(drawable->id, &sel_x1, &sel_y1, &sel_x2, &sel_y2);
img_bpp = gimp_drawable_bpp(drawable->id);
/*
* See how we will run
*/
switch (run_mode)
{
case RUN_INTERACTIVE :
/*
* Possibly retrieve data...
*/
gimp_get_data(PLUG_IN_NAME, &avg_width);
/*
* Get information from the dialog...
*/
if (!destripe_dialog())
return;
break;
case RUN_NONINTERACTIVE :
/*
* Make sure all the arguments are present...
*/
if (nparams != 4)
status = STATUS_CALLING_ERROR;
else
avg_width = param[3].data.d_int32;
break;
case RUN_WITH_LAST_VALS :
/*
* Possibly retrieve data...
*/
gimp_get_data(PLUG_IN_NAME, &avg_width);
break;
default :
status = STATUS_CALLING_ERROR;
break;
};
/*
* Destripe the image...
*/
if (status == STATUS_SUCCESS)
{
if ((gimp_drawable_color(drawable->id) ||
gimp_drawable_gray(drawable->id)))
{
/*
* Set the tile cache size...
*/
gimp_tile_cache_ntiles((drawable->width + gimp_tile_width() - 1) /
gimp_tile_width());
/*
* Run!
*/
destripe();
/*
* If run mode is interactive, flush displays...
*/
if (run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush();
/*
* Store data...
*/
if (run_mode == RUN_INTERACTIVE)
gimp_set_data(PLUG_IN_NAME, &avg_width, sizeof(avg_width));
}
else
status = STATUS_EXECUTION_ERROR;
};
/*
* Reset the current run status...
*/
values[0].data.d_status = status;
/*
* Detach from the drawable...
*/
gimp_drawable_detach(drawable);
}
static inline void
preview_draw_row (int x, int y, int w, guchar *row)
{
guchar *rgb = g_new(guchar, w * 3);
guchar *rgb_ptr;
int i;
switch (img_bpp)
{
case 1:
case 2:
for (i = 0, rgb_ptr = rgb; i < w; i++, row += img_bpp, rgb_ptr += 3)
rgb_ptr[0] = rgb_ptr[1] = rgb_ptr[2] = *row;
gtk_preview_draw_row(GTK_PREVIEW(preview), rgb, x, y, w);
break;
case 3:
gtk_preview_draw_row(GTK_PREVIEW(preview), row, x, y, w);
break;
case 4:
for (i = 0, rgb_ptr = rgb; i < w; i++, row += 4, rgb_ptr += 3)
rgb_ptr[0] = row[0],
rgb_ptr[1] = row[1],
rgb_ptr[2] = row[2];
gtk_preview_draw_row(GTK_PREVIEW(preview), rgb, x, y, w);
break;
}
g_free(rgb);
}
static void
destripe_rect (int sel_x1, int sel_y1, int sel_x2, int sel_y2, int do_preview)
{
GPixelRgn src_rgn; /* source image region */
GPixelRgn dst_rgn; /* destination image region */
guchar *src_rows; /* image data */
double progress, progress_inc;
int sel_width = sel_x2 - sel_x1;
int sel_height = sel_y2 - sel_y1;
long *hist, *corr; /* "histogram" data */
int tile_width = gimp_tile_width ();
int i, x, y, ox, cols;
/* initialize */
progress = 0.0;
progress_inc = 0.0;
/*
* Let the user know what we're doing...
*/
if (!do_preview)
{
gimp_progress_init (_("Destriping..."));
progress = 0;
progress_inc = 0.5 * tile_width / sel_width;
}
/*
* Setup for filter...
*/
gimp_pixel_rgn_init(&src_rgn, drawable, sel_x1, sel_y1, sel_width, sel_height, FALSE, FALSE);
gimp_pixel_rgn_init(&dst_rgn, drawable, sel_x1, sel_y1, sel_width, sel_height, TRUE, TRUE);
hist = g_new (long, sel_width * img_bpp);
corr = g_new (long, sel_width * img_bpp);
src_rows = g_malloc (tile_width * sel_height * img_bpp * sizeof (guchar));
memset (hist, 0, sel_width * img_bpp * sizeof (long));
/*
* collect "histogram" data.
*/
for (ox = sel_x1; ox < sel_x2; ox += tile_width)
{
guchar *rows = src_rows;
cols = sel_x2 - ox;
if (cols > tile_width)
cols = tile_width;
gimp_pixel_rgn_get_rect (&src_rgn, rows, ox, sel_y1, cols, sel_height);
for (y = 0; y < sel_height; y++)
{
long *h = hist + (ox - sel_x1) * img_bpp;
guchar *row_end = rows + cols * img_bpp;
while (rows < row_end)
*h++ += *rows++;
}
if (!do_preview)
gimp_progress_update (progress += progress_inc);
}
/*
* average out histogram
*/
if (1)
{
int extend = (avg_width >> 1) * img_bpp;
for (i = 0; i < MIN (3, img_bpp); i++)
{
long *h = hist - extend + i;
long *c = corr - extend + i;
long sum = 0;
int cnt = 0;
for (x = -extend; x < sel_width * img_bpp; x += img_bpp)
{
if (x + extend < sel_width * img_bpp) { sum += h[ extend]; cnt++; };
if (x - extend >= 0) { sum -= h[-extend]; cnt--; };
if (x >= 0) { *c = ((sum/cnt - *h) << 10) / *h; };
h += img_bpp;
c += img_bpp;
}
}
}
else
{
for (i = 0; i < MIN (3, img_bpp); i++)
{
long *h = hist + i + sel_width * img_bpp - img_bpp;
long *c = corr + i + sel_width * img_bpp - img_bpp;
long i = *h;
*c = 0;
do
{
h -= img_bpp;
c -= img_bpp;
if (*h - i > avg_width && i - *h > avg_width)
i = *h;
*c = (i-128) << 10 / *h;
}
while (h > hist);
}
}
/*
* remove stripes.
*/
for (ox = sel_x1; ox < sel_x2; ox += tile_width)
{
guchar *rows = src_rows;
cols = sel_x2 - ox;
if (cols > tile_width)
cols = tile_width;
gimp_pixel_rgn_get_rect (&src_rgn, rows, ox, sel_y1, cols, sel_height);
if (!do_preview)
gimp_progress_update (progress += progress_inc);
for (y = 0; y < sel_height; y++)
{
long *c = corr + (ox - sel_x1) * img_bpp;
guchar *row_end = rows + cols * img_bpp;
if (histogram)
while (rows < row_end)
{
*rows = MIN (255, MAX (0, 128 + (*rows * *c >> 10)));
c++; rows++;
}
else
while (rows < row_end)
{
*rows = MIN (255, MAX (0, *rows + (*rows * *c >> 10) ));
c++; rows++;
}
if (do_preview)
preview_draw_row (ox - sel_x1, y, cols, rows - cols * img_bpp);
}
if (!do_preview)
{
gimp_pixel_rgn_set_rect (&dst_rgn, src_rows, ox, sel_y1, cols, sel_height);
gimp_progress_update (progress += progress_inc);
}
}
g_free(src_rows);
/*
* Update the screen...
*/
if (do_preview)
{
gtk_widget_draw (preview, NULL);
gdk_flush ();
}
else
{
gimp_drawable_flush (drawable);
gimp_drawable_merge_shadow (drawable->id, TRUE);
gimp_drawable_update (drawable->id, sel_x1, sel_y1, sel_width, sel_height);
}
g_free (hist);
g_free (corr);
}
/*
* 'destripe()' - Destripe an image.
*
*/
static void
destripe (void)
{
destripe_rect (sel_x1, sel_y1, sel_x2, sel_y2, 0);
}
static void
dialog_histogram_callback(GtkWidget *widget, /* I - Toggle button */
gpointer data) /* I - Data */
{
histogram = !histogram;
preview_update ();
}
/*
* 'destripe_dialog()' - Popup a dialog window for the filter box size...
*/
static gint
destripe_dialog(void)
{
GtkWidget *dialog, /* Dialog window */
*table, /* Table "container" for controls */
*ptable, /* Preview table */
*ftable, /* Filter table */
*frame, /* Frame for preview */
*scrollbar, /* Horizontal + vertical scroller */
*button;
gint argc; /* Fake argc for GUI */
gchar **argv; /* Fake argv for GUI */
guchar *color_cube; /* Preview color cube... */
/*
* Initialize the program's display...
*/
argc = 1;
argv = g_new(gchar *, 1);
argv[0] = g_strdup("destripe");
gtk_init(&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
gdk_set_use_xshm(gimp_use_xshm());
#ifdef SIGBUS
signal(SIGBUS, SIG_DFL);
#endif
signal(SIGSEGV, SIG_DFL);
gtk_preview_set_gamma(gimp_gamma());
gtk_preview_set_install_cmap(gimp_install_cmap());
color_cube = gimp_color_cube();
gtk_preview_set_color_cube(color_cube[0], color_cube[1], color_cube[2], color_cube[3]);
gtk_widget_set_default_visual(gtk_preview_get_visual());
gtk_widget_set_default_colormap(gtk_preview_get_cmap());
/*
* Dialog window...
*/
dialog = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(dialog), _("Destripe"));
gtk_window_position(GTK_WINDOW(dialog), GTK_WIN_POS_MOUSE);
gtk_container_border_width(GTK_CONTAINER(dialog), 0);
gtk_signal_connect(GTK_OBJECT(dialog), "destroy",
(GtkSignalFunc) dialog_close_callback,
NULL);
/*
* Top-level table for dialog...
*/
table = gtk_table_new(3, 3, FALSE);
gtk_container_border_width(GTK_CONTAINER(table), 6);
gtk_table_set_row_spacings(GTK_TABLE(table), 4);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), table, FALSE, FALSE, 0);
gtk_widget_show(table);
/*
* Preview window...
*/
ptable = gtk_table_new(2, 2, FALSE);
gtk_container_border_width(GTK_CONTAINER(ptable), 0);
gtk_table_attach(GTK_TABLE(table), ptable, 0, 2, 0, 1, 0, 0, 0, 0);
gtk_widget_show(ptable);
frame = gtk_frame_new(NULL);
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
gtk_table_attach(GTK_TABLE(ptable), frame, 0, 1, 0, 1, 0, 0, 0, 0);
gtk_widget_show(frame);
preview_width = MIN(sel_x2 - sel_x1, PREVIEW_SIZE);
preview_height = MIN(sel_y2 - sel_y1, PREVIEW_SIZE);
preview = gtk_preview_new(GTK_PREVIEW_COLOR);
gtk_preview_size(GTK_PREVIEW(preview), preview_width, preview_height);
gtk_container_add(GTK_CONTAINER(frame), preview);
gtk_widget_show(preview);
hscroll_data = gtk_adjustment_new(0, 0, sel_x2 - sel_x1 - 1, 1.0,
MIN(preview_width, sel_x2 - sel_x1),
MIN(preview_width, sel_x2 - sel_x1));
gtk_signal_connect(hscroll_data, "value_changed",
(GtkSignalFunc)preview_scroll_callback, NULL);
scrollbar = gtk_hscrollbar_new(GTK_ADJUSTMENT(hscroll_data));
gtk_range_set_update_policy(GTK_RANGE(scrollbar), GTK_UPDATE_CONTINUOUS);
gtk_table_attach(GTK_TABLE(ptable), scrollbar, 0, 1, 1, 2, GTK_FILL, 0, 0, 0);
gtk_widget_show(scrollbar);
vscroll_data = gtk_adjustment_new(0, 0, sel_y2 - sel_y1 - 1, 1.0,
MIN(preview_height, sel_y2 - sel_y1),
MIN(preview_height, sel_y2 - sel_y1));
gtk_signal_connect(vscroll_data, "value_changed",
(GtkSignalFunc)preview_scroll_callback, NULL);
scrollbar = gtk_vscrollbar_new(GTK_ADJUSTMENT(vscroll_data));
gtk_range_set_update_policy(GTK_RANGE(scrollbar), GTK_UPDATE_CONTINUOUS);
gtk_table_attach(GTK_TABLE(ptable), scrollbar, 1, 2, 0, 1, 0, GTK_FILL, 0, 0);
gtk_widget_show(scrollbar);
preview_init();
/*
* Filter type controls...
*/
ftable = gtk_table_new(4, 1, FALSE);
gtk_container_border_width(GTK_CONTAINER(ftable), 4);
gtk_table_attach(GTK_TABLE(table), ftable, 2, 3, 0, 1, 0, 0, 0, 0);
gtk_widget_show(ftable);
button = gtk_check_button_new_with_label(_("Histogram"));
gtk_table_attach(GTK_TABLE(ftable), button, 0, 1, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button),
histogram ? TRUE : FALSE);
gtk_signal_connect(GTK_OBJECT(button), "toggled",
(GtkSignalFunc)dialog_histogram_callback,
NULL);
gtk_widget_show(button);
/* button = gtk_check_button_new_with_label("Recursive");
gtk_table_attach(GTK_TABLE(ftable), button, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button),
(filter_type & FILTER_RECURSIVE) ? TRUE : FALSE);
gtk_signal_connect(GTK_OBJECT(button), "toggled",
(GtkSignalFunc)dialog_recursive_callback,
NULL);
gtk_widget_show(button);*/
/*
* Box size (radius) control...
*/
dialog_create_ivalue(_("Width"), GTK_TABLE(table), 2, &avg_width, 2, MAX_AVG);
/*
* OK, cancel buttons...
*/
gtk_container_border_width(GTK_CONTAINER(GTK_DIALOG(dialog)->action_area), 6);
button = gtk_button_new_with_label(_("OK"));
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc) dialog_ok_callback,
dialog);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, TRUE, TRUE, 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(GTK_OBJECT(button), "clicked",
(GtkSignalFunc) dialog_cancel_callback,
dialog);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, TRUE, TRUE, 0);
gtk_widget_show(button);
/*
* Show it and wait for the user to do something...
*/
gtk_widget_show(dialog);
preview_update();
gtk_main();
gdk_flush();
/*
* Free the preview data...
*/
preview_exit();
/*
* Return ok/cancel...
*/
return (run_filter);
}
/*
* 'preview_init()' - Initialize the preview window...
*/
static void
preview_init(void)
{
int width; /* Byte width of the image */
/*
* Setup for preview filter...
*/
width = preview_width * img_bpp;
preview_x1 = sel_x1;
preview_y1 = sel_y1;
preview_x2 = preview_x1 + MIN(preview_width, sel_x2 - sel_x1);
preview_y2 = preview_y1 + MIN(preview_height, sel_y2 -sel_y1);
}
/*
* 'preview_scroll_callback()' - Update the preview when a scrollbar is moved.
*/
static void
preview_scroll_callback(void)
{
preview_x1 = sel_x1 + GTK_ADJUSTMENT(hscroll_data)->value;
preview_y1 = sel_y1 + GTK_ADJUSTMENT(vscroll_data)->value;
preview_x2 = preview_x1 + MIN(preview_width, sel_x2 - sel_x1);
preview_y2 = preview_y1 + MIN(preview_height, sel_y2 - sel_y1);
preview_update();
}
/*
* 'preview_update()' - Update the preview window.
*/
static void
preview_update(void)
{
destripe_rect (preview_x1, preview_y1, preview_x2, preview_y2, 1);
}
/*
* 'preview_exit()' - Free all memory used by the preview window...
*/
static void
preview_exit(void)
{
}
/*
* 'dialog_create_ivalue()' - Create an integer value control...
*/
static void
dialog_create_ivalue(char *title, /* I - Label for control */
GtkTable *table, /* I - Table container to use */
int row, /* I - Row # for container */
gint *value, /* I - Value holder */
int left, /* I - Minimum value for slider */
int right) /* I - Maximum value for slider */
{
GtkWidget *label, /* Control label */
*scale, /* Scale widget */
*entry; /* Text widget */
GtkObject *scale_data; /* Scale data */
char buf[256]; /* String buffer */
/*
* Label...
*/
label = gtk_label_new(title);
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 1.0);
gtk_table_attach(table, label, 0, 1, row, row + 1, GTK_FILL, GTK_FILL, 4, 0);
gtk_widget_show(label);
/*
* Scale...
*/
scale_data = gtk_adjustment_new(*value, left, right, 1.0, 1.0, 1.0);
gtk_signal_connect(GTK_OBJECT(scale_data), "value_changed",
(GtkSignalFunc) dialog_iscale_update,
value);
scale = gtk_hscale_new(GTK_ADJUSTMENT(scale_data));
gtk_widget_set_usize(scale, SCALE_WIDTH, 0);
gtk_table_attach(table, scale, 1, 2, row, row + 1, GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
gtk_scale_set_draw_value(GTK_SCALE(scale), FALSE);
gtk_range_set_update_policy(GTK_RANGE(scale), GTK_UPDATE_CONTINUOUS);
gtk_widget_show(scale);
/*
* Text entry...
*/
entry = gtk_entry_new();
gtk_object_set_user_data(GTK_OBJECT(entry), scale_data);
gtk_object_set_user_data(scale_data, entry);
gtk_widget_set_usize(entry, ENTRY_WIDTH, 0);
sprintf(buf, "%d", *value);
gtk_entry_set_text(GTK_ENTRY(entry), buf);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) dialog_ientry_update,
value);
gtk_table_attach(GTK_TABLE(table), entry, 2, 3, row, row + 1, GTK_FILL, GTK_FILL, 4, 0);
gtk_widget_show(entry);
}
/*
* 'dialog_iscale_update()' - Update the value field using the scale.
*/
static void
dialog_iscale_update(GtkAdjustment *adjustment, /* I - New value */
gint *value) /* I - Current value */
{
GtkWidget *entry; /* Text entry widget */
char buf[256]; /* Text buffer */
if (*value != adjustment->value)
{
*value = adjustment->value;
entry = gtk_object_get_user_data(GTK_OBJECT(adjustment));
sprintf(buf, "%d", *value);
gtk_signal_handler_block_by_data(GTK_OBJECT(entry), value);
gtk_entry_set_text(GTK_ENTRY(entry), buf);
gtk_signal_handler_unblock_by_data(GTK_OBJECT(entry), value);
preview_update();
};
}
/*
* 'dialog_ientry_update()' - Update the value field using the text entry.
*/
static void
dialog_ientry_update(GtkWidget *widget, /* I - Entry widget */
gint *value) /* I - Current value */
{
GtkAdjustment *adjustment;
gint new_value;
new_value = atoi(gtk_entry_get_text(GTK_ENTRY(widget)));
if (*value != new_value)
{
adjustment = gtk_object_get_user_data(GTK_OBJECT(widget));
if ((new_value >= adjustment->lower) &&
(new_value <= adjustment->upper))
{
*value = new_value;
adjustment->value = new_value;
gtk_signal_emit_by_name(GTK_OBJECT(adjustment), "value_changed");
preview_update();
};
};
}
/*
* 'dialog_ok_callback()' - Start the filter...
*/
static void
dialog_ok_callback(GtkWidget *widget, /* I - OK button widget */
gpointer data) /* I - Dialog window */
{
run_filter = TRUE;
gtk_widget_destroy(GTK_WIDGET(data));
}
/*
* 'dialog_cancel_callback()' - Cancel the filter...
*/
static void
dialog_cancel_callback(GtkWidget *widget, /* I - Cancel button widget */
gpointer data) /* I - Dialog window */
{
gtk_widget_destroy(GTK_WIDGET(data));
}
/*
* 'dialog_close_callback()' - Exit the filter dialog application.
*/
static void
dialog_close_callback(GtkWidget *widget, /* I - Dialog window */
gpointer data) /* I - Dialog window */
{
gtk_main_quit();
}
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