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gimp/plug-ins/sharpen/sharpen.c

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/*
* "$Id$"
*
* Sharpen filters for The GIMP -- an image manipulation program
*
* Copyright 1997 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Contents:
*
* main() - Main entry - just call gimp_main()...
* query() - Respond to a plug-in query...
* run() - Run the filter...
* sharpen() - Sharpen an image using a median filter.
* sharpen_dialog() - Popup a dialog window for the filter box size...
* 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_ok_callback() - Start the filter...
* dialog_cancel_callback() - Cancel the filter...
* dialog_close_callback() - Exit the filter dialog application.
*
* Revision History:
*
* $Log$
* Revision 1.2 1998/01/25 02:18:43 yosh
* Applied Sven's menu patch
*
* -Yosh
*
* Revision 1.1.1.1 1997/11/24 22:04:37 sopwith
* Let's try this import one last time.
*
* Revision 1.3 1997/11/18 03:04:29 nobody
* fixed ugly comment-bugs introduced by evil darkwing
* keep out configuration empty dirs
* --darkwing
*
* Revision 1.2 1997/11/17 05:44:06 nobody
* updated ChangeLog
* dropped non-working doc/Makefile entries
* applied many fixes from the registry as well as the devel ML
* applied missing patches by Art Haas
*
* --darkwing
*
* Revision 1.6 1997/11/14 17:17:59 mike
* Updated to dynamically allocate return params in the run() function.
*
* Revision 1.5 1997/10/17 13:56:54 mike
* Updated author/contact information.
*
* Revision 1.4 1997/09/29 17:16:29 mike
* To average 8 numbers you do *not* divide by 9! This caused the brightening
* problem when sharpening was "turned up".
*
* Revision 1.2 1997/06/08 22:27:35 mike
* Updated sharpen code for hard-coded 3x3 convolution matrix.
*
* Revision 1.1 1997/06/08 16:46:07 mike
* Initial revision
*/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
/*
* Macros...
*/
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
/*
* Constants...
*/
#define PLUG_IN_NAME "plug_in_sharpen"
#define PLUG_IN_VERSION "1.0.4 - 14 November 1997"
#define PREVIEW_SIZE 128
#define SCALE_WIDTH 64
#define ENTRY_WIDTH 64
/*
* Local functions...
*/
static void query(void);
static void run(char *, int, GParam *, int *, GParam **);
static void sharpen(void);
static gint sharpen_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 */
guchar *preview_src, /* Source pixel image */
*preview_dst, /* Destination pixel image */
*preview_image; /* Preview RGB image */
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 sel_width, /* Selection width */
sel_height; /* Selection height */
int img_bpp; /* Bytes-per-pixel in image */
int sharpen_percent = 10; /* Percent of sharpening */
gint run_filter = FALSE; /* True if we should run the filter */
/*
* 'main()' - Main entry - just call gimp_main()...
*/
int
main(int argc, /* I - Number of command-line args */
char *argv[]) /* I - Command-line args */
{
return (gimp_main(argc, argv));
}
/*
* '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, "percent", "Percent sharpening (default = 10)" }
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args) / sizeof(args[0]),
nreturn_vals = 0;
gimp_install_procedure(PLUG_IN_NAME,
"Sharpen filter, typically used to \'sharpen\' a photographic image.",
"This plug-in selectively performs a convolution filter on an image.",
"Michael Sweet <mike@easysw.com>",
"Michael Sweet <mike@easysw.com>",
PLUG_IN_VERSION,
"<Image>/Filters/Enhance/Sharpen...", "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 */
GParam *values; /* Return values */
/*
* Initialize parameter data...
*/
status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
values = g_new(GParam, 1);
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);
sel_width = sel_x2 - sel_x1;
sel_height = sel_y2 - sel_y1;
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, &sharpen_percent);
/*
* Get information from the dialog...
*/
if (!sharpen_dialog())
return;
break;
case RUN_NONINTERACTIVE :
/*
* Make sure all the arguments are present...
*/
if (nparams != 4)
status = STATUS_CALLING_ERROR;
else
sharpen_percent = param[3].data.d_int32;
break;
case RUN_WITH_LAST_VALS :
/*
* Possibly retrieve data...
*/
gimp_get_data(PLUG_IN_NAME, &sharpen_percent);
break;
default :
status = STATUS_CALLING_ERROR;
break;;
};
/*
* Sharpen 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!
*/
sharpen();
/*
* 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, &sharpen_percent, sizeof(sharpen_percent));
}
else
status = STATUS_EXECUTION_ERROR;
};
/*
* Reset the current run status...
*/
values[0].data.d_status = status;
/*
* Detach from the drawable...
*/
gimp_drawable_detach(drawable);
}
/*
* 'sharpen()' - Sharpen an image using a convolution filter.
*/
static void
sharpen(void)
{
GPixelRgn src_rgn, /* Source image region */
dst_rgn; /* Destination image region */
guchar *src_rows[4], /* Source pixel rows */
*dst_row, /* Destination pixel row */
*dst_ptr, /* Current destination pixel */
*src_filters[3];/* Source pixels, ordered for filter */
int i, j, t, d, /* Looping vars */
x, y, /* Current location in image */
xmax, /* Maximum filtered X coordinate */
row, /* Current row in src_rows */
trow, /* Looping var */
count, /* Current number of filled src_rows */
width; /* Byte width of the image */
int fact; /* Scaling for convolution matrix */
/*
* Let the user know what we're doing...
*/
gimp_progress_init("Sharpening...");
/*
* 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);
fact = 100 - sharpen_percent;
if (fact < 1)
fact = 1;
width = sel_width * img_bpp;
xmax = width - img_bpp;
for (row = 0; row < 4; row ++)
src_rows[row] = g_malloc(width * sizeof(guchar));
dst_row = g_malloc(width * sizeof(guchar));
/*
* Pre-load the first row for the filter...
*/
gimp_pixel_rgn_get_row(&src_rgn, src_rows[0], sel_x1, sel_y1, sel_width);
row = 1;
count = 1;
/*
* Sharpen...
*/
for (y = sel_y1; y < sel_y2; y ++)
{
/*
* Load the next pixel row...
*/
if ((y + 1) < sel_y2)
{
/*
* Check to see if our src_rows[] array is overflowing yet...
*/
if (count >= 3)
count --;
/*
* Grab the next row...
*/
gimp_pixel_rgn_get_row(&src_rgn, src_rows[row], sel_x1, y + 1, sel_width);
count ++;
row = (row + 1) & 3;
}
else
{
/*
* No more pixels at the bottom... Drop the oldest samples...
*/
count --;
};
/*
* Now sharpen pixels and save the results...
*/
if (count == 3)
{
for (i = 0, trow = (row + 1) & 3;
i < 3;
i ++, trow = (trow + 1) & 3)
src_filters[i] = src_rows[trow];
for (x = img_bpp, dst_ptr = dst_row + img_bpp;
x < xmax;
x ++, dst_ptr ++)
{
i = (100 * src_filters[1][x] -
(src_filters[0][x - img_bpp] + src_filters[0][x] +
src_filters[0][x + img_bpp] + src_filters[1][x - img_bpp] +
src_filters[1][x + img_bpp] + src_filters[2][x - img_bpp] +
src_filters[2][x] + src_filters[2][x + img_bpp]) *
sharpen_percent / 8) / fact;
if (i < 0)
*dst_ptr = 0;
else if (i > 255)
*dst_ptr = 255;
else
*dst_ptr = i;
};
gimp_pixel_rgn_set_row(&dst_rgn, dst_row + img_bpp, sel_x1 + 1, y, sel_width - 2);
};
if ((y & 15) == 0)
gimp_progress_update((double)(y - sel_y1) / (double)sel_height);
};
/*
* OK, we're done. Free all memory used...
*/
for (row = 0; row < 4; row ++)
g_free(src_rows[row]);
g_free(dst_row);
/*
* Update the screen...
*/
gimp_drawable_flush(drawable);
gimp_drawable_merge_shadow(drawable->id, TRUE);
gimp_drawable_update(drawable->id, sel_x1, sel_y1, sel_width, sel_height);
}
/*
* 'sharpen_dialog()' - Popup a dialog window for the filter box size...
*/
static gint
sharpen_dialog(void)
{
GtkWidget *dialog, /* Dialog window */
*table, /* Table "container" for controls */
*ptable, /* Preview table */
*frame, /* Frame for preview */
*scrollbar, /* Horizontal + vertical scroller */
*button; /* OK/Cancel buttons */
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("sharpen");
gtk_init(&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
gdk_set_use_xshm(gimp_use_xshm());
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), "Sharpen");
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, 3, 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_width, PREVIEW_SIZE);
preview_height = MIN(sel_height, 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_width - 1, 1.0,
MIN(preview_width, sel_width),
MIN(preview_width, sel_width));
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_height - 1, 1.0,
MIN(preview_height, sel_height),
MIN(preview_height, sel_height));
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();
/*
* Sharpness control...
*/
dialog_create_ivalue("Sharpness", GTK_TABLE(table), 2, &sharpen_percent, 1, 99);
/*
* 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 row, /* Current row in preview_srcs */
width; /* Byte width of the image */
/*
* Setup for preview filter...
*/
width = preview_width * img_bpp;
preview_src = g_malloc(width * preview_height * sizeof(guchar));
preview_dst = g_malloc(width * preview_height * sizeof(guchar));
preview_image = g_malloc(preview_width * preview_height * 3 * sizeof(guchar));
preview_x1 = sel_x1;
preview_y1 = sel_y1;
preview_x2 = preview_x1 + preview_width;
preview_y2 = preview_y1 + preview_height;
}
/*
* '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_width);
preview_y2 = preview_y1 + MIN(preview_height, sel_height);
preview_update();
}
/*
* 'preview_update()' - Update the preview window.
*/
static void
preview_update(void)
{
GPixelRgn src_rgn; /* Source image region */
guchar *src_ptr, /* Current source pixel */
*dst_ptr, /* Current destination pixel */
*image_ptr; /* Current image pixel */
int i, j, t, d, /* Looping vars */
x, y, /* Current location in image */
xmax, /* Maximum X coordinate */
width, /* Byte width of the image */
fact; /* Scaling for convolution matrix */
/*
* Setup for filter...
*/
gimp_pixel_rgn_init(&src_rgn, drawable, preview_x1, preview_y1, preview_width, preview_height, FALSE, FALSE);
fact = 100 - sharpen_percent;
if (fact < 1)
fact = 1;
width = preview_width * img_bpp;
xmax = width - img_bpp;
/*
* Pre-load the first row for the filter...
*/
gimp_pixel_rgn_get_rect(&src_rgn, preview_src, preview_x1, preview_y1,
preview_width, preview_height);
/*
* Sharpen...
*/
memcpy(preview_dst, preview_src, width);
memcpy(preview_dst + width * (preview_height - 1),
preview_src + width * (preview_height - 1),
width);
for (y = 1, src_ptr = preview_src + width, dst_ptr = preview_dst + width;
y < (preview_height - 1);
y ++, src_ptr += width, dst_ptr += width)
{
/*
* Now sharpen pixels and save the results...
*/
memcpy(dst_ptr, src_ptr, img_bpp);
memcpy(dst_ptr + width - img_bpp, src_ptr + width - img_bpp, img_bpp);
for (x = img_bpp; x < xmax; x ++)
{
i = (100 * src_ptr[x] -
(src_ptr[x - width - img_bpp] + src_ptr[x - width] +
src_ptr[x - width + img_bpp] + src_ptr[x - img_bpp] +
src_ptr[x + img_bpp] + src_ptr[x + width - img_bpp] +
src_ptr[x + width] + src_ptr[x + width + img_bpp]) *
sharpen_percent / 8) / fact;
if (i < 0)
dst_ptr[x] = 0;
else if (i > 255)
dst_ptr[x] = 255;
else
dst_ptr[x] = i;
};
};
/*
* Draw the preview image...
*/
switch (img_bpp)
{
case 1 :
case 2 :
for (x = preview_width * preview_height, dst_ptr = preview_dst,
image_ptr = preview_image;
x > 0;
x --, dst_ptr += img_bpp, image_ptr += 3)
image_ptr[0] = image_ptr[1] = image_ptr[2] = *dst_ptr;
for (y = 0, image_ptr = preview_image;
y < preview_height;
y ++, image_ptr += preview_width * 3)
gtk_preview_draw_row(GTK_PREVIEW(preview), image_ptr, 0, y,
preview_width);
break;
case 3 :
for (y = 0, image_ptr = preview_dst;
y < preview_height;
y ++, image_ptr += preview_width * 3)
gtk_preview_draw_row(GTK_PREVIEW(preview), image_ptr, 0, y,
preview_width);
break;
case 4 :
for (x = 0, dst_ptr = preview_dst, image_ptr = preview_image;
x < preview_width;
x ++, dst_ptr += 4, image_ptr += 3)
{
image_ptr[0] = dst_ptr[0];
image_ptr[1] = dst_ptr[1];
image_ptr[2] = dst_ptr[2];
};
for (y = 0, image_ptr = preview_image;
y < preview_height;
y ++, image_ptr += preview_width * 3)
gtk_preview_draw_row(GTK_PREVIEW(preview), image_ptr, 0, y,
preview_width);
break;
};
gtk_widget_draw(preview, NULL);
gdk_flush();
}
/*
* 'preview_exit()' - Free all memory used by the preview window...
*/
static void
preview_exit(void)
{
int row; /* Looping var */
g_free(preview_src);
g_free(preview_dst);
g_free(preview_image);
}
/*
* '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();
}
/*
* End of "$Id$".
*/
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