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- /* $Id: unsharp.c,v 1.18 2000/11/26 12:13:23 neo Exp $
- *
- * unsharp.c 0.10 -- This is a plug-in for the GIMP 1.0
- * http://www.stdout.org/~winston/gimp/unsharp.html
- * (now out of date)
- *
- * Copyright (C) 1999 Winston Chang
- * <winstonc@cs.wisc.edu>
- * <winston@stdout.org>
- *
- * 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 <stdlib.h>
- #include <string.h>
- #include <stdio.h>
-
- #include <gtk/gtk.h>
-
- #include <libgimp/gimp.h>
- #include <libgimp/gimpui.h>
-
- #include "libgimp/stdplugins-intl.h"
-
-
- #define PLUG_IN_VERSION "0.10"
-
- #define SCALE_WIDTH 150
-
- /* to show both pretty unoptimized code and ugly optimized code blocks
- There's really no reason to define this, unless you want to see how
- much pointer aritmetic can speed things up. I find that it is about
- 45% faster with the optimized code. */
- /* #define READABLE_CODE */
-
- /* uncomment this line to get a rough feel of how long the
- plug-in takes to run */
- /* #define TIMER */
- #ifdef TIMER
- #include <sys/time.h>
- #include <unistd.h>
-
- static void timerstart (void);
- static void timerstop (void);
- static struct timeval time_start, time_stop;
- #endif
-
- typedef struct
- {
- gdouble radius;
- gdouble amount;
- gint threshold;
- } UnsharpMaskParams;
-
- typedef struct
- {
- gint run;
- } UnsharpMaskInterface;
-
- /* local function prototypes */
- static void query (void);
- static void run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals);
-
- static inline void blur_line (gdouble *ctable,
- gdouble *cmatrix,
- gint cmatrix_length,
- guchar *cur_col,
- guchar *dest_col,
- gint y,
- glong bytes);
- static int gen_convolve_matrix (gdouble std_dev,
- gdouble **cmatrix);
- static gdouble* gen_lookup_table (gdouble* cmatrix,
- gint cmatrix_length);
- static void unsharp_region (GimpPixelRgn srcPTR,
- GimpPixelRgn dstPTR,
- gint width,
- gint height,
- gint bytes,
- gdouble radius,
- gdouble amount,
- gint x1,
- gint x2,
- gint y1,
- gint y2);
-
- static void unsharp_mask (GimpDrawable *drawable,
- gint radius,
- gdouble amount);
-
- static void unsharp_ok_callback (GtkWidget *widget,
- gpointer data);
- static gint unsharp_mask_dialog (void);
-
- /* preview shit -- not finished yet */
- #undef PREVIEW
- #ifdef PREVIEW
- static void preview_scroll_callback (void);
- static void preview_init (void);
- static void preview_exit (void);
- static void preview_update (void);
-
- static GtkWidget* preview;
- static gint preview_width; /* Width of preview widget */
- static gint preview_height; /* Height of preview widget */
- static gint preview_x1; /* Upper-left X of preview */
- static gint preview_y1; /* Upper-left Y of preview */
- static gint preview_x2; /* Lower-right X of preview */
- static gint preview_y2; /* Lower-right Y of preview */
-
- static gint sel_width; /* Selection width */
- static gint sel_height; /* Selection height */
-
- static GtkObject *hscroll_data; /* Horizontal scrollbar data */
- static GtkObject *vscroll_data; /* Vertical scrollbar data */
- #endif
-
- static gint run_filter = FALSE;
-
-
- /* create a few globals, set default values */
- static UnsharpMaskParams unsharp_params =
- {
- 5.0, /* default radius = 5 */
- 0.5, /* default amount = .5 */
- 0 /* default threshold = 0 */
- };
-
- /* static UnsharpMaskInterface umint = { FALSE }; */
-
- /* Setting PLUG_IN_INFO */
- GimpPlugInInfo PLUG_IN_INFO =
- {
- NULL, /* init_proc */
- NULL, /* quit_proc */
- query, /* query_proc */
- run, /* run_proc */
- };
-
- MAIN ()
-
- static void
- query (void)
- {
- static GimpParamDef args[] =
- {
- { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
- { GIMP_PDB_IMAGE, "image", "(unused)" },
- { GIMP_PDB_DRAWABLE, "drawable", "Drawable to draw on" },
- { GIMP_PDB_FLOAT, "radius", "Radius of gaussian blur (in pixels > 1.0)" },
- { GIMP_PDB_FLOAT, "amount", "Strength of effect" },
- { GIMP_PDB_FLOAT, "threshold", "Threshold" }
- };
- static gint nargs = sizeof (args) / sizeof (args[0]);
-
- /* Install a procedure in the procedure database. */
- gimp_install_procedure ("plug_in_unsharp_mask",
- "An unsharp mask filter",
- "The unsharp mask is a sharpening filter that works "
- "by comparing using the difference of the image and "
- "a blurred version of the image. It is commonly "
- "used on photographic images, and is provides a much "
- "more pleasing result than the standard sharpen "
- "filter.",
- "Winston Chang <winstonc@cs.wisc.edu>",
- "Winston Chang",
- "1999",
- N_("<Image>/Filters/Enhance/Unsharp Mask..."),
- "GRAY*, RGB*",
- GIMP_PLUGIN,
- nargs, 0,
- args, NULL);
- }
-
- /* this is the actual function */
- static void
- run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals)
- {
- static GimpParam values[1];
- GimpDrawable *drawable;
- GimpRunModeType run_mode;
- GimpPDBStatusType status = GIMP_PDB_SUCCESS;
-
- #ifdef TIMER
- timerstart();
- #endif
-
- run_mode = param[0].data.d_int32;
-
- values[0].type = GIMP_PDB_STATUS;
- values[0].data.d_status = status;
- *return_vals = values;
- *nreturn_vals = 1;
-
- INIT_I18N_UI();
-
- switch (run_mode)
- {
- case GIMP_RUN_INTERACTIVE:
- gimp_get_data ("plug_in_unsharp_mask", &unsharp_params);
- if (! unsharp_mask_dialog ()) return;
- break;
-
- case GIMP_RUN_NONINTERACTIVE:
- if (nparams != 6)
- {
- status = GIMP_PDB_CALLING_ERROR;
- }
- else
- {
- unsharp_params.radius = param[3].data.d_float;
- unsharp_params.amount = param[4].data.d_float;
- unsharp_params.threshold = param[5].data.d_int32;
-
- /* make sure there are legal values */
- if ((unsharp_params.radius < 0.0) ||
- (unsharp_params.amount<0.0))
- status = GIMP_PDB_CALLING_ERROR;
- }
- break;
-
- case GIMP_RUN_WITH_LAST_VALS:
- gimp_get_data ("plug_in_unsharp_mask", &unsharp_params);
- break;
-
- default:
- break;
- }
-
- if (status == GIMP_PDB_SUCCESS)
- {
- drawable = gimp_drawable_get (param[2].data.d_drawable);
- gimp_tile_cache_ntiles(2 * (drawable->width / gimp_tile_width() + 1));
-
- /* here we go */
- unsharp_mask (drawable, unsharp_params.radius, unsharp_params.amount);
-
- /* values[0].data.d_status = status; */
- gimp_displays_flush ();
-
- /* set data for next use of filter */
- gimp_set_data ("plug_in_unsharp_mask", &unsharp_params,
- sizeof (UnsharpMaskParams));
-
- /*fprintf(stderr, "%f %f\n", unsharp_params.radius, unsharp_params.amount);*/
-
- gimp_drawable_detach(drawable);
- values[0].data.d_status = status;
- }
- #ifdef TIMER
- timerstop ();
- #endif
- }
-
- /* -------------------------- Unsharp Mask ------------------------- */
- static void
- unsharp_mask (GimpDrawable *drawable,
- gint radius,
- gdouble amount)
- {
- GimpPixelRgn srcPR, destPR;
- glong width, height;
- glong bytes;
- gint x1, y1, x2, y2;
-
- /* Get the input */
- gimp_drawable_mask_bounds(drawable->id, &x1, &y1, &x2, &y2);
- gimp_progress_init(_("Blurring..."));
-
- width = drawable->width;
- height = drawable->height;
- bytes = drawable->bpp;
-
- /* initialize 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);
-
- unsharp_region (srcPR, destPR, width, height, bytes, radius, amount,
- x1, x2, y1, y2);
-
- gimp_drawable_flush(drawable);
- gimp_drawable_merge_shadow(drawable->id, TRUE);
- gimp_drawable_update(drawable->id, x1, y1, (x2-x1), (y2-y1));
- }
-
- /* perform an unsharp mask on the region, given a source region, dest.
- region, width and height of the regions, and corner coordinates of
- a subregion to act upon. Everything outside the subregion is unaffected.
- */
- static void
- unsharp_region (GimpPixelRgn srcPR,
- GimpPixelRgn destPR,
- gint width,
- gint height,
- gint bytes,
- gdouble radius,
- gdouble amount,
- gint x1,
- gint x2,
- gint y1,
- gint y2)
- {
- guchar *cur_col;
- guchar *dest_col;
- guchar *cur_row;
- guchar *dest_row;
- gint x;
- gint y;
- gdouble *cmatrix = NULL;
- gint cmatrix_length;
- gdouble *ctable;
-
- gint row, col; /* these are counters for loops */
-
- /* these are used for the merging step */
- gint threshold;
- gint diff;
- gint value;
- gint u,v;
-
- /* find height and width of subregion to act on */
- x = x2-x1;
- y = y2-y1;
-
- /* generate convolution matrix and make sure it's smaller than each dimension */
- cmatrix_length = gen_convolve_matrix(radius, &cmatrix);
- /* generate lookup table */
- ctable = gen_lookup_table(cmatrix, cmatrix_length);
-
- /* allocate row buffers */
- cur_row = g_new (guchar, x * bytes);
- dest_row = g_new (guchar, x * bytes);
-
- /* find height and width of subregion to act on */
- x = x2-x1;
- y = y2-y1;
-
- /* blank out a region of the destination memory area, I think */
- for (row = 0; row < y; row++)
- {
- gimp_pixel_rgn_get_row(&destPR, dest_row, x1, y1+row, (x2-x1));
- memset(dest_row, 0, x*bytes);
- gimp_pixel_rgn_set_row(&destPR, dest_row, x1, y1+row, (x2-x1));
- }
-
- /* blur the rows */
- for (row = 0; row < y; row++)
- {
- gimp_pixel_rgn_get_row(&srcPR, cur_row, x1, y1+row, x);
- gimp_pixel_rgn_get_row(&destPR, dest_row, x1, y1+row, x);
- blur_line(ctable, cmatrix, cmatrix_length, cur_row, dest_row, x, bytes);
- gimp_pixel_rgn_set_row(&destPR, dest_row, x1, y1+row, x);
-
- if (row%5 == 0)
- gimp_progress_update((gdouble)row/(3*y));
- }
-
- /* allocate column buffers */
- cur_col = g_new (guchar, y * bytes);
- dest_col = g_new (guchar, y * bytes);
-
- /* blur the cols */
- for (col = 0; col < x; col++)
- {
- gimp_pixel_rgn_get_col(&destPR, cur_col, x1+col, y1, y);
- gimp_pixel_rgn_get_col(&destPR, dest_col, x1+col, y1, y);
- blur_line(ctable, cmatrix, cmatrix_length, cur_col, dest_col, y, bytes);
- gimp_pixel_rgn_set_col(&destPR, dest_col, x1+col, y1, y);
-
- if (col%5 == 0)
- gimp_progress_update((gdouble)col/(3*x) + 0.33);
- }
-
- gimp_progress_init(_("Merging..."));
-
- /* find integer value of threshold */
- threshold = unsharp_params.threshold;
-
- /* merge the source and destination (which currently contains
- the blurred version) images */
- for (row = 0; row < y; row++)
- {
- value = 0;
- /* get source row */
- gimp_pixel_rgn_get_row(&srcPR, cur_row, x1, y1+row, x);
- /* get dest row */
- gimp_pixel_rgn_get_row(&destPR, dest_row, x1, y1+row, x);
- /* combine the two */
- for (u = 0; u < x; u++)
- {
- for (v = 0; v < bytes; v++)
- {
- diff = (cur_row[u*bytes+v] - dest_row[u*bytes+v]);
- /* do tresholding */
- if (abs (2 * diff) < threshold)
- diff = 0;
-
- value = cur_row[u*bytes+v] + amount * diff;
-
- if (value < 0) dest_row[u*bytes+v] =0;
- else if (value > 255) dest_row[u*bytes+v] = 255;
- else dest_row[u*bytes+v] = value;
- }
- }
- /* update progress bar every five rows */
- if (row%5 == 0) gimp_progress_update((gdouble)row/(3*y) + 0.67);
- gimp_pixel_rgn_set_row(&destPR, dest_row, x1, y1+row, x);
- }
-
- /* free the memory we took */
- g_free(cur_row);
- g_free(dest_row);
- g_free(cur_col);
- g_free(dest_col);
- g_free(cmatrix);
- g_free(ctable);
-
- }
-
- /* this function is written as if it is blurring a column at a time,
- even though it can operate on rows, too. There is no difference
- in the processing of the lines, at least to the blur_line function. */
- static inline void
- blur_line (gdouble *ctable,
- gdouble *cmatrix,
- gint cmatrix_length,
- guchar *cur_col,
- guchar *dest_col,
- gint y,
- glong bytes)
- {
- #ifdef READABLE_CODE
- /* ------------- semi-readable code ------------------- */
- gdouble scale;
- gdouble sum;
- gint i,j;
- gint row;
-
- /* this is to take care cases in which the matrix can go over
- * both edges at once. It's not efficient, but this can only
- * happen in small pictures anyway.
- */
- if (cmatrix_length > y)
- {
- for (row = 0; row < y ; row++)
- {
- scale = 0;
- /* find the scale factor */
- for (j = 0; j < y ; j++)
- {
- /* if the index is in bounds, add it to the scale counter */
- if ((j + cmatrix_length/2 - row >= 0) &&
- (j + cmatrix_length/2 - row < cmatrix_length))
- scale += cmatrix[j + cmatrix_length/2 - row];
- }
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = 0; j < y; j++)
- {
- if ((j >= row - cmatrix_length/2) &&
- (j <= row + cmatrix_length/2))
- sum += cur_col[j*bytes + i] * cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum / scale);
- }
- }
- }
- else
- { /* when the cmatrix is smaller than row length */
- /* for the edge condition, we only use available info, and scale to one */
- for (row = 0; row < cmatrix_length/2; row++)
- {
- /* find scale factor */
- scale=0;
- for (j = cmatrix_length/2 - row; j<cmatrix_length; j++)
- scale += cmatrix[j];
-
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = cmatrix_length/2 - row; j<cmatrix_length; j++)
- {
- sum += cur_col[(row + j-cmatrix_length/2)*bytes + i] *
- cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum / scale);
- }
- }
- /* go through each pixel in each col */
- for (; row < y-cmatrix_length/2; row++)
- {
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = 0; j<cmatrix_length; j++)
- {
- sum += cur_col[(row + j-cmatrix_length/2)*bytes + i] * cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum);
- }
- }
- /* for the edge condition , we only use available info, and scale to one */
- for (; row < y; row++)
- {
- /* find scale factor */
- scale=0;
- for (j = 0; j< y-row + cmatrix_length/2; j++)
- scale += cmatrix[j];
-
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = 0; j<y-row + cmatrix_length/2; j++)
- {
- sum += cur_col[(row + j-cmatrix_length/2)*bytes + i] * cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum / scale);
- }
- }
- }
- #endif
- #ifndef READABLE_CODE
- /* --------------- optimized, unreadable code -------------------*/
- gdouble scale;
- gdouble sum;
- gint i=0, j=0;
- gint row;
- gint cmatrix_middle = cmatrix_length/2;
-
- gdouble *cmatrix_p;
- guchar *cur_col_p;
- guchar *cur_col_p1;
- guchar *dest_col_p;
- gdouble *ctable_p;
-
- /* this first block is the same as the non-optimized version --
- * it is only used for very small pictures, so speed isn't a
- * big concern.
- */
- if (cmatrix_length > y)
- {
- for (row = 0; row < y ; row++)
- {
- scale=0;
- /* find the scale factor */
- for (j = 0; j < y ; j++)
- {
- /* if the index is in bounds, add it to the scale counter */
- if ((j + cmatrix_length/2 - row >= 0) &&
- (j + cmatrix_length/2 - row < cmatrix_length))
- scale += cmatrix[j + cmatrix_length/2 - row];
- }
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = 0; j < y; j++)
- {
- if ((j >= row - cmatrix_length/2) &&
- (j <= row + cmatrix_length/2))
- sum += cur_col[j*bytes + i] * cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum / scale);
- }
- }
- }
- else
- {
- /* for the edge condition, we only use available info and scale to one */
- for (row = 0; row < cmatrix_middle; row++)
- {
- /* find scale factor */
- scale=0;
- for (j = cmatrix_middle - row; j<cmatrix_length; j++)
- scale += cmatrix[j];
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = cmatrix_middle - row; j<cmatrix_length; j++)
- {
- sum += cur_col[(row + j-cmatrix_middle)*bytes + i] * cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum / scale);
- }
- }
- /* go through each pixel in each col */
- dest_col_p = dest_col + row*bytes;
- for (; row < y-cmatrix_middle; row++)
- {
- cur_col_p = (row - cmatrix_middle) * bytes + cur_col;
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- cmatrix_p = cmatrix;
- cur_col_p1 = cur_col_p;
- ctable_p = ctable;
- for (j = cmatrix_length; j>0; j--)
- {
- sum += *(ctable_p + *cur_col_p1);
- cur_col_p1 += bytes;
- ctable_p += 256;
- }
- cur_col_p++;
- *(dest_col_p++) = ROUND (sum);
- }
- }
-
- /* for the edge condition , we only use available info, and scale to one */
- for (; row < y; row++)
- {
- /* find scale factor */
- scale=0;
- for (j = 0; j< y-row + cmatrix_middle; j++)
- scale += cmatrix[j];
- for (i = 0; i<bytes; i++)
- {
- sum = 0;
- for (j = 0; j<y-row + cmatrix_middle; j++)
- {
- sum += cur_col[(row + j-cmatrix_middle)*bytes + i] * cmatrix[j];
- }
- dest_col[row*bytes + i] = (guchar) ROUND (sum / scale);
- }
- }
- }
- #endif
- }
-
- /* generates a 1-D convolution matrix to be used for each pass of
- * a two-pass gaussian blur. Returns the length of the matrix.
- */
- static gint
- gen_convolve_matrix (gdouble radius,
- gdouble **cmatrix_p)
- {
- gint matrix_length;
- gint matrix_midpoint;
- gdouble* cmatrix;
- gint i,j;
- gdouble std_dev;
- gdouble sum;
-
- /* we want to generate a matrix that goes out a certain radius
- * from the center, so we have to go out ceil(rad-0.5) pixels,
- * inlcuding the center pixel. Of course, that's only in one direction,
- * so we have to go the same amount in the other direction, but not count
- * the center pixel again. So we double the previous result and subtract
- * one.
- * The radius parameter that is passed to this function is used as
- * the standard deviation, and the radius of effect is the
- * standard deviation * 2. It's a little confusing.
- */
- radius = fabs(radius) + 1.0;
-
- std_dev = radius;
- radius = std_dev * 2;
-
- /* go out 'radius' in each direction */
- matrix_length = 2 * ceil(radius-0.5) + 1;
- if (matrix_length <= 0) matrix_length = 1;
- matrix_midpoint = matrix_length/2 + 1;
- *cmatrix_p = g_new (gdouble, matrix_length);
- cmatrix = *cmatrix_p;
-
- /* Now we fill the matrix by doing a numeric integration approximation
- * from -2*std_dev to 2*std_dev, sampling 50 points per pixel.
- * We do the bottom half, mirror it to the top half, then compute the
- * center point. Otherwise asymmetric quantization errors will occur.
- * The formula to integrate is e^-(x^2/2s^2).
- */
-
- /* first we do the top (right) half of matrix */
- for (i = matrix_length/2 + 1; i < matrix_length; i++)
- {
- double base_x = i - floor(matrix_length/2) - 0.5;
- sum = 0;
- for (j = 1; j <= 50; j++)
- {
- if ( base_x+0.02*j <= radius )
- sum += exp (-(base_x+0.02*j)*(base_x+0.02*j) /
- (2*std_dev*std_dev));
- }
- cmatrix[i] = sum/50;
- }
-
- /* mirror the thing to the bottom half */
- for (i=0; i<=matrix_length/2; i++) {
- cmatrix[i] = cmatrix[matrix_length-1-i];
- }
-
- /* find center val -- calculate an odd number of quanta to make it symmetric,
- * even if the center point is weighted slightly higher than others. */
- sum = 0;
- for (j=0; j<=50; j++)
- {
- sum += exp (-(0.5+0.02*j)*(0.5+0.02*j) /
- (2*std_dev*std_dev));
- }
- cmatrix[matrix_length/2] = sum/51;
-
- /* normalize the distribution by scaling the total sum to one */
- sum=0;
- for (i=0; i<matrix_length; i++) sum += cmatrix[i];
- for (i=0; i<matrix_length; i++) cmatrix[i] = cmatrix[i] / sum;
-
- return matrix_length;
- }
-
- /* ----------------------- gen_lookup_table ----------------------- */
- /* generates a lookup table for every possible product of 0-255 and
- each value in the convolution matrix. The returned array is
- indexed first by matrix position, then by input multiplicand (?)
- value.
- */
- static gdouble *
- gen_lookup_table (gdouble *cmatrix,
- gint cmatrix_length)
- {
- int i, j;
- gdouble* lookup_table = g_new (gdouble, cmatrix_length * 256);
-
- #ifdef READABLE_CODE
- for (i=0; i<cmatrix_length; i++)
- {
- for (j=0; j<256; j++)
- {
- lookup_table[i*256 + j] = cmatrix[i] * (gdouble)j;
- }
- }
- #endif
-
- #ifndef READABLE_CODE
- gdouble* lookup_table_p = lookup_table;
- gdouble* cmatrix_p = cmatrix;
-
- for (i=0; i<cmatrix_length; i++)
- {
- for (j=0; j<256; j++)
- {
- *(lookup_table_p++) = *cmatrix_p * (gdouble)j;
- }
- cmatrix_p++;
- }
- #endif
-
- return lookup_table;
- }
-
- /* ------------------------ unsharp_mask_dialog ----------------------- */
- static gint
- unsharp_mask_dialog (void)
- {
- GtkWidget *window;
- GtkWidget *frame;
- GtkWidget *table;
- GtkObject *adj;
-
- gimp_ui_init ("unsharp", TRUE);
-
- window = gimp_dialog_new (_("Unsharp Mask"), "unsharp",
- gimp_standard_help_func, "filters/unsharp.html",
- GTK_WIN_POS_MOUSE,
- FALSE, TRUE, FALSE,
-
- _("OK"), unsharp_ok_callback,
- NULL, NULL, NULL, TRUE, FALSE,
- _("Cancel"), gtk_widget_destroy,
- NULL, 1, NULL, FALSE, TRUE,
-
- NULL);
-
- gtk_signal_connect (GTK_OBJECT (window), "destroy",
- GTK_SIGNAL_FUNC (gtk_main_quit),
- NULL);
-
- frame = gtk_frame_new (_("Parameter Settings"));
- gtk_container_set_border_width (GTK_CONTAINER (frame), 6);
- gtk_box_pack_start (GTK_BOX (GTK_DIALOG (window)->vbox), frame,
- FALSE, FALSE, 0);
- gtk_widget_show (frame);
-
- table = gtk_table_new (3, 3, FALSE);
- gtk_table_set_col_spacings (GTK_TABLE (table), 4);
- gtk_table_set_row_spacings (GTK_TABLE (table), 2);
- gtk_container_set_border_width (GTK_CONTAINER (table), 4);
- gtk_container_add (GTK_CONTAINER (frame), table);
- gtk_widget_show (table);
-
- adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
- _("Radius:"), SCALE_WIDTH, 0,
- unsharp_params.radius, 1.0, 25.0, 0.1, 1.0, 1,
- TRUE, 0, 0,
- NULL, NULL);
- gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
- GTK_SIGNAL_FUNC (gimp_double_adjustment_update),
- &unsharp_params.radius);
-
- adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
- _("Amount:"), SCALE_WIDTH, 0,
- unsharp_params.amount, 0.0, 5.0, 0.01, 0.1, 2,
- TRUE, 0, 0,
- NULL, NULL);
- gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
- GTK_SIGNAL_FUNC (gimp_double_adjustment_update),
- &unsharp_params.amount);
-
- adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
- _("Threshold:"), SCALE_WIDTH, 0,
- unsharp_params.threshold, 0.0, 255.0, 1.0, 10.0, 0,
- TRUE, 0, 0,
- NULL, NULL);
- gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
- GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
- &unsharp_params.threshold);
-
- gtk_widget_show (window);
-
- gtk_main ();
- gdk_flush ();
-
- return run_filter;
- }
-
-
- /* This doesn't work yet. */
- #ifdef PREVIEW
- /* '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_src = g_new (guchar, width * preview_height);
- preview_neg = g_new (guchar, width * preview_height);
- preview_dst = g_new (guchar, width * preview_height);
- preview_image = g_new (guchar, preview_width * preview_height * 3);
-
- 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)
- {
-
- }
- #endif
-
- static void
- unsharp_ok_callback (GtkWidget *widget,
- gpointer data)
- {
- run_filter = TRUE;
-
- gtk_widget_destroy (GTK_WIDGET (data));
- }
-
- #ifdef TIMER
- static void
- timerstart (void)
- {
- gettimeofday (&time_start, NULL);
- }
-
- static void
- timerstop (void)
- {
- long sec, usec;
-
- gettimeofday(&time_stop,NULL);
- sec = time_stop.tv_sec - time_start.tv_sec;
- usec = time_stop.tv_usec - time_start.tv_usec;
-
- if (usec < 0)
- {
- sec--;
- usec += 1000000;
- }
-
- fprintf (stderr, "%ld.%ld seconds\n", sec, usec);
- }
- #endif
-