mirror of https://github.com/GNOME/gimp.git
1135 lines
27 KiB
C
1135 lines
27 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* Whirl and Pinch plug-in --- two common distortions in one place
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* Copyright (C) 1997 Federico Mena Quintero
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* federico@nuclecu.unam.mx
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* Copyright (C) 1997 Scott Goehring
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* scott@poverty.bloomington.in.us
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* Version 2.09:
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*
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* - Another cool patch from Scott. The radius is now in [0.0, 2.0],
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* with 1.0 being the default as usual. In addition to a minimal
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* speed-up (one multiplication is eliminated in the calculation
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* code), it is easier to think of nice round values instead of
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* sqrt(2) :-)
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*
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* - Modified the way out-of-range pixels are handled. This time the
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* plug-in handles `outside' pixels better; it paints them with the
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* current background color (for images without transparency) or with
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* a completely transparent background color (for images with
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* transparency).
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*/
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/* Version 2.08:
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*
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* This is the first version of this plug-in. It is called 2.08
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* because it came out of merging the old Whirl 2.08 and Pinch 2.08
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* plug-ins. */
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#include "config.h"
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "gtk/gtk.h"
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#include "libgimp/gimp.h"
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#define PLUG_IN_NAME "plug_in_whirl_pinch"
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#define PLUG_IN_VERSION "May 1997, 2.09"
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/***** Magic numbers *****/
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#define PREVIEW_SIZE 128
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#define SCALE_WIDTH 200
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#define ENTRY_WIDTH 60
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#define CHECK_SIZE 8
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#define CHECK_DARK ((int) (1.0 / 3.0 * 255))
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#define CHECK_LIGHT ((int) (2.0 / 3.0 * 255))
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/***** Types *****/
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typedef struct {
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gdouble whirl;
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gdouble pinch;
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gdouble radius;
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} whirl_pinch_vals_t;
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typedef struct {
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GtkWidget *preview;
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guchar *check_row_0;
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guchar *check_row_1;
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guchar *image;
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guchar *dimage;
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gint run;
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} whirl_pinch_interface_t;
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typedef struct {
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gint col, row;
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gint img_width, img_height, img_bpp, img_has_alpha;
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gint tile_width, tile_height;
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guchar bg_color[4];
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GDrawable *drawable;
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GTile *tile;
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} pixel_fetcher_t;
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/***** Prototypes *****/
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static void query(void);
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static void run(char *name,
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int nparams,
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GParam *param,
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int *nreturn_vals,
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GParam **return_vals);
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static void whirl_pinch(void);
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static int calc_undistorted_coords(double wx, double wy,
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double whirl, double pinch,
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double *x, double *y);
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static guchar bilinear(double x, double y, guchar *values);
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static pixel_fetcher_t *pixel_fetcher_new(GDrawable *drawable);
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static void pixel_fetcher_set_bg_color(pixel_fetcher_t *pf, guchar r, guchar g, guchar b, guchar a);
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static void pixel_fetcher_get_pixel(pixel_fetcher_t *pf, int x, int y, guchar *pixel);
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static void pixel_fetcher_destroy(pixel_fetcher_t *pf);
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static void build_preview_source_image(void);
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static gint whirl_pinch_dialog(void);
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static void dialog_update_preview(void);
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static void dialog_create_value(char *title, GtkTable *table, int row, gdouble *value,
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double left, double right, double step);
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static void dialog_scale_update(GtkAdjustment *adjustment, gdouble *value);
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static void dialog_entry_update(GtkWidget *widget, gdouble *value);
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static void dialog_close_callback(GtkWidget *widget, gpointer data);
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static void dialog_ok_callback(GtkWidget *widget, gpointer data);
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static void dialog_cancel_callback(GtkWidget *widget, gpointer data);
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/***** Variables *****/
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GPlugInInfo PLUG_IN_INFO = {
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NULL, /* init_proc */
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NULL, /* quit_proc */
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query, /* query_proc */
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run /* run_proc */
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}; /* PLUG_IN_INFO */
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static whirl_pinch_vals_t wpvals = {
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90.0, /* whirl */
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0.0, /* pinch */
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1.0 /* radius */
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}; /* wpvals */
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static whirl_pinch_interface_t wpint = {
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NULL, /* preview */
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NULL, /* check_row_0 */
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NULL, /* check_row_1 */
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NULL, /* image */
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NULL, /* dimage */
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FALSE /* run */
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}; /* wpint */
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static GDrawable *drawable;
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static gint img_width, img_height, img_bpp, img_has_alpha;
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static gint sel_x1, sel_y1, sel_x2, sel_y2;
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static gint sel_width, sel_height;
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static gint preview_width, preview_height;
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static double cen_x, cen_y;
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static double scale_x, scale_y;
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static double radius, radius2;
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/***** Functions *****/
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/*****/
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MAIN()
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/*****/
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static void
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query(void)
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{
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static GParamDef args[] = {
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{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
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{ PARAM_IMAGE, "image", "Input image" },
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{ PARAM_DRAWABLE, "drawable", "Input drawable" },
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{ PARAM_FLOAT, "whirl", "Whirl angle (degrees)" },
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{ PARAM_FLOAT, "pinch", "Pinch amount" },
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{ PARAM_FLOAT, "radius", "Radius (1.0 is the largest circle that fits in the image, "
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"and 2.0 goes all the way to the corners)" }
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}; /* args */
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static GParamDef *return_vals = NULL;
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static int nargs = sizeof(args) / sizeof(args[0]);
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static int nreturn_vals = 0;
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gimp_install_procedure(PLUG_IN_NAME,
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"Distort an image by whirling and pinching",
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"Distorts the image by whirling and pinching, which are two common "
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"center-based, circular distortions. Whirling is like projecting "
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"the image onto the surface of water in a toilet and flushing. "
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"Pinching is similar to projecting the image onto an elastic surface "
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"and pressing or pulling on the center of the surface.",
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"Federico Mena Quintero and Scott Goehring",
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"Federico Mena Quintero and Scott Goehring",
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PLUG_IN_VERSION,
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"<Image>/Filters/Distorts/Whirl and Pinch",
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"RGB*, GRAY*",
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PROC_PLUG_IN,
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nargs,
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nreturn_vals,
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args,
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return_vals);
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} /* query */
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/*****/
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static void
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run(char *name,
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int nparams,
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GParam *param,
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int *nreturn_vals,
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GParam **return_vals)
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{
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static GParam values[1];
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GRunModeType run_mode;
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GStatusType status;
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double xhsiz, yhsiz;
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int pwidth, pheight;
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status = STATUS_SUCCESS;
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run_mode = param[0].data.d_int32;
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values[0].type = PARAM_STATUS;
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values[0].data.d_status = status;
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*nreturn_vals = 1;
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*return_vals = values;
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/* Get the active drawable info */
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drawable = gimp_drawable_get(param[2].data.d_drawable);
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img_width = gimp_drawable_width(drawable->id);
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img_height = gimp_drawable_height(drawable->id);
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img_bpp = gimp_drawable_bpp(drawable->id);
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img_has_alpha = gimp_drawable_has_alpha(drawable->id);
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gimp_drawable_mask_bounds(drawable->id, &sel_x1, &sel_y1, &sel_x2, &sel_y2);
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/* Calculate scaling parameters */
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sel_width = sel_x2 - sel_x1;
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sel_height = sel_y2 - sel_y1;
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cen_x = (double) (sel_x1 + sel_x2 - 1) / 2.0;
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cen_y = (double) (sel_y1 + sel_y2 - 1) / 2.0;
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xhsiz = (double) (sel_width - 1) / 2.0;
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yhsiz = (double) (sel_height - 1) / 2.0;
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if (xhsiz < yhsiz) {
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scale_x = yhsiz / xhsiz;
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scale_y = 1.0;
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} else if (xhsiz > yhsiz) {
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scale_x = 1.0;
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scale_y = xhsiz / yhsiz;
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} else {
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scale_x = 1.0;
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scale_y = 1.0;
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} /* else */
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radius = MAX(xhsiz, yhsiz);
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/* Calculate preview size */
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if (sel_width > sel_height) {
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pwidth = MIN(sel_width, PREVIEW_SIZE);
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pheight = sel_height * pwidth / sel_width;
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} else {
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pheight = MIN(sel_height, PREVIEW_SIZE);
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pwidth = sel_width * pheight / sel_height;
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} /* else */
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preview_width = MAX(pwidth, 2); /* Min size is 2 */
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preview_height = MAX(pheight, 2);
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/* See how we will run */
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switch (run_mode) {
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case RUN_INTERACTIVE:
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/* Possibly retrieve data */
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gimp_get_data(PLUG_IN_NAME, &wpvals);
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/* Get information from the dialog */
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if (!whirl_pinch_dialog())
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return;
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break;
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case RUN_NONINTERACTIVE:
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/* Make sure all the arguments are present */
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if (nparams != 6)
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status = STATUS_CALLING_ERROR;
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if (status == STATUS_SUCCESS) {
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wpvals.whirl = param[3].data.d_float;
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wpvals.pinch = param[4].data.d_float;
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wpvals.radius = param[5].data.d_float;
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} /* if */
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break;
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case RUN_WITH_LAST_VALS:
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/* Possibly retrieve data */
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gimp_get_data(PLUG_IN_NAME, &wpvals);
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break;
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default:
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break;
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} /* switch */
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/* Distort the image */
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if ((status == STATUS_SUCCESS) &&
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(gimp_drawable_is_rgb(drawable->id) ||
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gimp_drawable_is_gray(drawable->id))) {
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/* Set the tile cache size */
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gimp_tile_cache_ntiles(2 * (drawable->width + gimp_tile_width() - 1) / gimp_tile_width());
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/* Run! */
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whirl_pinch();
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/* If run mode is interactive, flush displays */
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if (run_mode != RUN_NONINTERACTIVE)
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gimp_displays_flush();
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/* Store data */
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if (run_mode == RUN_INTERACTIVE)
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gimp_set_data(PLUG_IN_NAME, &wpvals, sizeof(whirl_pinch_vals_t));
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} else if (status == STATUS_SUCCESS)
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status = STATUS_EXECUTION_ERROR;
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values[0].data.d_status = status;
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gimp_drawable_detach(drawable);
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} /* run */
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/*****/
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static void
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whirl_pinch(void)
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{
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GPixelRgn dest_rgn;
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gint progress, max_progress;
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guchar *top_row, *bot_row;
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guchar *top_p, *bot_p;
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gint row, col;
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guchar pixel[4][4];
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guchar values[4];
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double whirl;
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double cx, cy;
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int ix, iy;
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int i;
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guchar bg_color[4];
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pixel_fetcher_t *pft, *pfb;
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#if 0
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printf("Waiting... (pid %d)\n", getpid());
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kill(getpid(), SIGSTOP);
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#endif
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/* Initialize rows */
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top_row = g_malloc(img_bpp * sel_width);
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bot_row = g_malloc(img_bpp * sel_width);
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/* Initialize pixel region */
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gimp_pixel_rgn_init(&dest_rgn, drawable, sel_x1, sel_y1, sel_width, sel_height, TRUE, TRUE);
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pft = pixel_fetcher_new(drawable);
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pfb = pixel_fetcher_new(drawable);
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gimp_palette_get_background(&bg_color[0], &bg_color[1], &bg_color[2]);
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pixel_fetcher_set_bg_color(pft,
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bg_color[0],
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bg_color[1],
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bg_color[2],
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(img_has_alpha ? 0 : 255));
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pixel_fetcher_set_bg_color(pfb,
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bg_color[0],
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bg_color[1],
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bg_color[2],
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(img_has_alpha ? 0 : 255));
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progress = 0;
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max_progress = sel_width * sel_height;
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gimp_progress_init("Whirling and pinching...");
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whirl = wpvals.whirl * G_PI / 180;
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radius2 = radius * radius * wpvals.radius;
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for (row = sel_y1; row <= ((sel_y1 + sel_y2) / 2); row++) {
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top_p = top_row;
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bot_p = bot_row + img_bpp * (sel_width - 1);
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for (col = sel_x1; col < sel_x2; col++) {
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if (calc_undistorted_coords(col, row, whirl, wpvals.pinch, &cx, &cy)) {
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/* We are inside the distortion area */
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/* Top */
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if (cx >= 0.0)
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ix = (int) cx;
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else
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ix = -((int) -cx + 1);
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if (cy >= 0.0)
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iy = (int) cy;
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else
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iy = -((int) -cy + 1);
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pixel_fetcher_get_pixel(pft, ix, iy, pixel[0]);
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pixel_fetcher_get_pixel(pft, ix + 1, iy, pixel[1]);
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pixel_fetcher_get_pixel(pft, ix, iy + 1, pixel[2]);
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pixel_fetcher_get_pixel(pft, ix + 1, iy + 1, pixel[3]);
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for (i = 0; i < img_bpp; i++) {
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values[0] = pixel[0][i];
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values[1] = pixel[1][i];
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values[2] = pixel[2][i];
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values[3] = pixel[3][i];
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*top_p++ = bilinear(cx, cy, values);
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} /* for */
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/* Bottom */
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cx = cen_x + (cen_x - cx);
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cy = cen_y + (cen_y - cy);
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if (cx >= 0.0)
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ix = (int) cx;
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else
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ix = -((int) -cx + 1);
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if (cy >= 0.0)
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iy = (int) cy;
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else
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iy = -((int) -cy + 1);
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pixel_fetcher_get_pixel(pfb, ix, iy, pixel[0]);
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pixel_fetcher_get_pixel(pfb, ix + 1, iy, pixel[1]);
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pixel_fetcher_get_pixel(pfb, ix, iy + 1, pixel[2]);
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pixel_fetcher_get_pixel(pfb, ix + 1, iy + 1, pixel[3]);
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for (i = 0; i < img_bpp; i++) {
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values[0] = pixel[0][i];
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values[1] = pixel[1][i];
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values[2] = pixel[2][i];
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values[3] = pixel[3][i];
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*bot_p++ = bilinear(cx, cy, values);
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} /* for */
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bot_p -= 2 * img_bpp; /* We move backwards! */
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} else {
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/* We are outside the distortion area; just copy the source pixels */
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/* Top */
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pixel_fetcher_get_pixel(pft, col, row, pixel[0]);
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for (i = 0; i < img_bpp; i++)
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*top_p++ = pixel[0][i];
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/* Bottom */
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pixel_fetcher_get_pixel(pfb,
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(sel_x2 - 1) - (col - sel_x1),
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(sel_y2 - 1) - (row - sel_y1),
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pixel[0]);
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for (i = 0; i < img_bpp; i++)
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*bot_p++ = pixel[0][i];
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bot_p -= 2 * img_bpp; /* We move backwards! */
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} /* else */
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} /* for */
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/* Paint rows to image */
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gimp_pixel_rgn_set_row(&dest_rgn, top_row, sel_x1, row, sel_width);
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gimp_pixel_rgn_set_row(&dest_rgn, bot_row, sel_x1, (sel_y2 - 1) - (row - sel_y1), sel_width);
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/* Update progress */
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progress += sel_width * 2;
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gimp_progress_update((double) progress / max_progress);
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} /* for */
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pixel_fetcher_destroy(pft);
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pixel_fetcher_destroy(pfb);
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g_free(top_row);
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g_free(bot_row);
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gimp_drawable_flush(drawable);
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gimp_drawable_merge_shadow(drawable->id, TRUE);
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gimp_drawable_update(drawable->id, sel_x1, sel_y1, sel_width, sel_height);
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} /* whirl_pinch */
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/*****/
|
|
|
|
static int
|
|
calc_undistorted_coords(double wx, double wy,
|
|
double whirl, double pinch,
|
|
double *x, double *y)
|
|
{
|
|
double dx, dy;
|
|
double d, factor;
|
|
double dist;
|
|
double ang, sina, cosa;
|
|
int inside;
|
|
|
|
/* Distances to center, scaled */
|
|
|
|
dx = (wx - cen_x) * scale_x;
|
|
dy = (wy - cen_y) * scale_y;
|
|
|
|
/* Distance^2 to center of *circle* (scaled ellipse) */
|
|
|
|
d = dx * dx + dy * dy;
|
|
|
|
/* If we are inside circle, then distort. Else, just return the same position */
|
|
|
|
inside = (d < radius2);
|
|
|
|
if (inside) {
|
|
dist = sqrt(d / wpvals.radius) / radius;
|
|
|
|
/* Pinch */
|
|
|
|
factor = pow(sin(G_PI_2 * dist), -pinch);
|
|
|
|
dx *= factor;
|
|
dy *= factor;
|
|
|
|
/* Whirl */
|
|
|
|
factor = 1.0 - dist;
|
|
|
|
ang = whirl * factor * factor;
|
|
|
|
sina = sin(ang);
|
|
cosa = cos(ang);
|
|
|
|
*x = (cosa * dx - sina * dy) / scale_x + cen_x;
|
|
*y = (sina * dx + cosa * dy) / scale_y + cen_y;
|
|
} else {
|
|
*x = wx;
|
|
*y = wy;
|
|
} /* else */
|
|
|
|
return inside;
|
|
} /* calc_undistorted_coords */
|
|
|
|
|
|
/*****/
|
|
|
|
static guchar
|
|
bilinear(double x, double y, guchar *values)
|
|
{
|
|
double m0, m1;
|
|
|
|
x = fmod(x, 1.0);
|
|
y = fmod(y, 1.0);
|
|
|
|
if (x < 0.0)
|
|
x += 1.0;
|
|
|
|
if (y < 0.0)
|
|
y += 1.0;
|
|
|
|
m0 = (double) values[0] + x * ((double) values[1] - values[0]);
|
|
m1 = (double) values[2] + x * ((double) values[3] - values[2]);
|
|
|
|
return (guchar) (m0 + y * (m1 - m0));
|
|
} /* bilinear */
|
|
|
|
|
|
/*****/
|
|
|
|
static pixel_fetcher_t *
|
|
pixel_fetcher_new(GDrawable *drawable)
|
|
{
|
|
pixel_fetcher_t *pf;
|
|
|
|
pf = g_malloc(sizeof(pixel_fetcher_t));
|
|
|
|
pf->col = -1;
|
|
pf->row = -1;
|
|
pf->img_width = gimp_drawable_width(drawable->id);
|
|
pf->img_height = gimp_drawable_height(drawable->id);
|
|
pf->img_bpp = gimp_drawable_bpp(drawable->id);
|
|
pf->img_has_alpha = gimp_drawable_has_alpha(drawable->id);
|
|
pf->tile_width = gimp_tile_width();
|
|
pf->tile_height = gimp_tile_height();
|
|
pf->bg_color[0] = 0;
|
|
pf->bg_color[1] = 0;
|
|
pf->bg_color[2] = 0;
|
|
pf->bg_color[3] = 0;
|
|
|
|
pf->drawable = drawable;
|
|
pf->tile = NULL;
|
|
|
|
return pf;
|
|
} /* pixel_fetcher_new */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
pixel_fetcher_set_bg_color(pixel_fetcher_t *pf, guchar r, guchar g, guchar b, guchar a)
|
|
{
|
|
pf->bg_color[0] = r;
|
|
pf->bg_color[1] = g;
|
|
pf->bg_color[2] = b;
|
|
|
|
if (pf->img_has_alpha)
|
|
pf->bg_color[pf->img_bpp - 1] = a;
|
|
} /* pixel_fetcher_set_bg_color */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
pixel_fetcher_get_pixel(pixel_fetcher_t *pf, int x, int y, guchar *pixel)
|
|
{
|
|
gint col, row;
|
|
gint coloff, rowoff;
|
|
guchar *p;
|
|
int i;
|
|
|
|
if ((x < sel_x1) || (x >= sel_x2) ||
|
|
(y < sel_y1) || (y >= sel_y2)) {
|
|
for (i = 0; i < pf->img_bpp; i++)
|
|
pixel[i] = pf->bg_color[i];
|
|
|
|
return;
|
|
} /* if */
|
|
|
|
col = x / pf->tile_width;
|
|
coloff = x % pf->tile_width;
|
|
row = y / pf->tile_height;
|
|
rowoff = y % pf->tile_height;
|
|
|
|
if ((col != pf->col) ||
|
|
(row != pf->row) ||
|
|
(pf->tile == NULL)) {
|
|
if (pf->tile != NULL)
|
|
gimp_tile_unref(pf->tile, FALSE);
|
|
|
|
pf->tile = gimp_drawable_get_tile(pf->drawable, FALSE, row, col);
|
|
gimp_tile_ref(pf->tile);
|
|
|
|
pf->col = col;
|
|
pf->row = row;
|
|
} /* if */
|
|
|
|
p = pf->tile->data + pf->img_bpp * (pf->tile->ewidth * rowoff + coloff);
|
|
|
|
for (i = pf->img_bpp; i; i--)
|
|
*pixel++ = *p++;
|
|
} /* pixel_fetcher_get_pixel */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
pixel_fetcher_destroy(pixel_fetcher_t *pf)
|
|
{
|
|
if (pf->tile != NULL)
|
|
gimp_tile_unref(pf->tile, FALSE);
|
|
|
|
g_free(pf);
|
|
} /* pixel_fetcher_destroy */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
build_preview_source_image(void)
|
|
{
|
|
double left, right, bottom, top;
|
|
double px, py;
|
|
double dx, dy;
|
|
int x, y;
|
|
guchar *p;
|
|
guchar pixel[4];
|
|
pixel_fetcher_t *pf;
|
|
|
|
wpint.check_row_0 = g_malloc(preview_width * sizeof(guchar));
|
|
wpint.check_row_1 = g_malloc(preview_width * sizeof(guchar));
|
|
wpint.image = g_malloc(preview_width * preview_height * 4 * sizeof(guchar));
|
|
wpint.dimage = g_malloc(preview_width * preview_height * 3 * sizeof(guchar));
|
|
|
|
left = sel_x1;
|
|
right = sel_x2 - 1;
|
|
bottom = sel_y2 - 1;
|
|
top = sel_y1;
|
|
|
|
dx = (right - left) / (preview_width - 1);
|
|
dy = (bottom - top) / (preview_height - 1);
|
|
|
|
py = top;
|
|
|
|
pf = pixel_fetcher_new(drawable);
|
|
|
|
p = wpint.image;
|
|
|
|
for (y = 0; y < preview_height; y++) {
|
|
px = left;
|
|
|
|
for (x = 0; x < preview_width; x++) {
|
|
/* Checks */
|
|
|
|
if ((x / CHECK_SIZE) & 1) {
|
|
wpint.check_row_0[x] = CHECK_DARK;
|
|
wpint.check_row_1[x] = CHECK_LIGHT;
|
|
} else {
|
|
wpint.check_row_0[x] = CHECK_LIGHT;
|
|
wpint.check_row_1[x] = CHECK_DARK;
|
|
} /* else */
|
|
|
|
/* Thumbnail image */
|
|
|
|
pixel_fetcher_get_pixel(pf, (int) px, (int) py, pixel);
|
|
|
|
if (img_bpp < 3) {
|
|
if (img_has_alpha)
|
|
pixel[3] = pixel[1];
|
|
else
|
|
pixel[3] = 255;
|
|
|
|
pixel[1] = pixel[0];
|
|
pixel[2] = pixel[0];
|
|
} else
|
|
if (!img_has_alpha)
|
|
pixel[3] = 255;
|
|
|
|
*p++ = pixel[0];
|
|
*p++ = pixel[1];
|
|
*p++ = pixel[2];
|
|
*p++ = pixel[3];
|
|
|
|
px += dx;
|
|
} /* for */
|
|
|
|
py += dy;
|
|
} /* for */
|
|
|
|
pixel_fetcher_destroy(pf);
|
|
} /* build_preview_source_image */
|
|
|
|
|
|
/*****/
|
|
|
|
static gint
|
|
whirl_pinch_dialog(void)
|
|
{
|
|
GtkWidget *dialog;
|
|
GtkWidget *top_table;
|
|
GtkWidget *frame;
|
|
GtkWidget *table;
|
|
GtkWidget *button;
|
|
gint argc;
|
|
gchar **argv;
|
|
guchar *color_cube;
|
|
#if 0
|
|
printf("Waiting... (pid %d)\n", getpid());
|
|
kill(getpid(), SIGSTOP);
|
|
#endif
|
|
argc = 1;
|
|
argv = g_new(gchar *, 1);
|
|
argv[0] = g_strdup("whirlpinch");
|
|
|
|
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());
|
|
|
|
build_preview_source_image();
|
|
|
|
dialog = gtk_dialog_new();
|
|
gtk_window_set_title(GTK_WINDOW(dialog), "Whirl and Pinch");
|
|
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_table = gtk_table_new(2, 3, FALSE);
|
|
gtk_container_border_width(GTK_CONTAINER(top_table), 6);
|
|
gtk_table_set_row_spacings(GTK_TABLE(top_table), 4);
|
|
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), top_table, FALSE, FALSE, 0);
|
|
gtk_widget_show(top_table);
|
|
|
|
/* Preview */
|
|
|
|
frame = gtk_frame_new(NULL);
|
|
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
|
|
gtk_table_attach(GTK_TABLE(top_table), frame, 1, 2, 0, 1, 0, 0, 0, 0);
|
|
gtk_widget_show(frame);
|
|
|
|
wpint.preview = gtk_preview_new(GTK_PREVIEW_COLOR);
|
|
gtk_preview_size(GTK_PREVIEW(wpint.preview), preview_width, preview_height);
|
|
gtk_container_add(GTK_CONTAINER(frame), wpint.preview);
|
|
gtk_widget_show(wpint.preview);
|
|
|
|
/* Controls */
|
|
|
|
table = gtk_table_new(3, 3, FALSE);
|
|
gtk_container_border_width(GTK_CONTAINER(table), 0);
|
|
gtk_table_attach(GTK_TABLE(top_table), table, 0, 3, 1, 2, GTK_EXPAND | GTK_FILL, 0, 0, 0);
|
|
gtk_widget_show(table);
|
|
|
|
dialog_create_value("Whirl angle", GTK_TABLE(table), 0, &wpvals.whirl, -360.0, 360.0, 1.0);
|
|
dialog_create_value("Pinch amount", GTK_TABLE(table), 1, &wpvals.pinch, -1.0, 1.0, 0.01);
|
|
dialog_create_value("Radius", GTK_TABLE(table), 2, &wpvals.radius, 0.0, 2.0, 0.01);
|
|
|
|
/* 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);
|
|
|
|
/* Done */
|
|
|
|
gtk_widget_show(dialog);
|
|
dialog_update_preview();
|
|
|
|
gtk_main();
|
|
gdk_flush();
|
|
|
|
g_free(wpint.check_row_0);
|
|
g_free(wpint.check_row_1);
|
|
g_free(wpint.image);
|
|
g_free(wpint.dimage);
|
|
|
|
return wpint.run;
|
|
} /* whirl_pinch_dialog */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_update_preview(void)
|
|
{
|
|
double left, right, bottom, top;
|
|
double dx, dy;
|
|
double px, py;
|
|
double cx, cy;
|
|
int ix, iy;
|
|
int x, y;
|
|
double whirl;
|
|
double scale_x, scale_y;
|
|
guchar *p_ul, *p_lr, *i, *p;
|
|
guchar *check_ul, *check_lr;
|
|
int check;
|
|
guchar outside[4];
|
|
|
|
gimp_palette_get_background(&outside[0], &outside[1], &outside[2]);
|
|
outside[3] = (img_has_alpha ? 0 : 255);
|
|
|
|
if (img_bpp < 3) {
|
|
outside[1] = outside[0];
|
|
outside[2] = outside[0];
|
|
} /* if */
|
|
|
|
left = sel_x1;
|
|
right = sel_x2 - 1;
|
|
bottom = sel_y2 - 1;
|
|
top = sel_y1;
|
|
|
|
dx = (right - left) / (preview_width - 1);
|
|
dy = (bottom - top) / (preview_height - 1);
|
|
|
|
whirl = wpvals.whirl * G_PI / 180.0;
|
|
radius2 = radius * radius * wpvals.radius;
|
|
|
|
scale_x = (double) preview_width / (right - left + 1);
|
|
scale_y = (double) preview_height / (bottom - top + 1);
|
|
|
|
py = top;
|
|
|
|
p_ul = wpint.dimage;
|
|
p_lr = wpint.dimage + 3 * (preview_width * preview_height - 1);
|
|
|
|
for (y = 0; y <= (preview_height / 2); y++) {
|
|
px = left;
|
|
|
|
if ((y / CHECK_SIZE) & 1)
|
|
check_ul = wpint.check_row_0;
|
|
else
|
|
check_ul = wpint.check_row_1;
|
|
|
|
if (((preview_height - y - 1) / CHECK_SIZE) & 1)
|
|
check_lr = wpint.check_row_0;
|
|
else
|
|
check_lr = wpint.check_row_1;
|
|
|
|
for (x = 0; x < preview_width; x++) {
|
|
calc_undistorted_coords(px, py, whirl, wpvals.pinch, &cx, &cy);
|
|
|
|
cx = (cx - left) * scale_x;
|
|
cy = (cy - top) * scale_y;
|
|
|
|
/* Upper left mirror */
|
|
|
|
ix = (int) (cx + 0.5);
|
|
iy = (int) (cy + 0.5);
|
|
|
|
check = check_ul[x];
|
|
|
|
if ((ix >= 0) && (ix < preview_width) &&
|
|
(iy >= 0) && (iy < preview_height))
|
|
i = wpint.image + 4 * (preview_width * iy + ix);
|
|
else
|
|
i = outside;
|
|
|
|
p_ul[0] = check + ((i[0] - check) * i[3]) / 255;
|
|
p_ul[1] = check + ((i[1] - check) * i[3]) / 255;
|
|
p_ul[2] = check + ((i[2] - check) * i[3]) / 255;
|
|
|
|
p_ul += 3;
|
|
|
|
/* Lower right mirror */
|
|
|
|
ix = preview_width - ix - 1;
|
|
iy = preview_height - iy - 1;
|
|
|
|
check = check_lr[preview_width - x - 1];
|
|
|
|
if ((ix >= 0) && (ix < preview_width) &&
|
|
(iy >= 0) && (iy < preview_height))
|
|
i = wpint.image + 4 * (preview_width * iy + ix);
|
|
else
|
|
i = outside;
|
|
|
|
p_lr[0] = check + ((i[0] - check) * i[3]) / 255;
|
|
p_lr[1] = check + ((i[1] - check) * i[3]) / 255;
|
|
p_lr[2] = check + ((i[2] - check) * i[3]) / 255;
|
|
|
|
p_lr -= 3;
|
|
|
|
px += dx;
|
|
} /* for */
|
|
|
|
py += dy;
|
|
} /* for */
|
|
|
|
p = wpint.dimage;
|
|
|
|
for (y = 0; y < preview_height; y++) {
|
|
gtk_preview_draw_row(GTK_PREVIEW(wpint.preview), p, 0, y, preview_width);
|
|
|
|
p += preview_width * 3;
|
|
} /* for */
|
|
|
|
gtk_widget_draw(wpint.preview, NULL);
|
|
gdk_flush();
|
|
} /* dialog_update_preview */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_create_value(char *title, GtkTable *table, int row, gdouble *value,
|
|
double left, double right, double step)
|
|
{
|
|
GtkWidget *label;
|
|
GtkWidget *scale;
|
|
GtkWidget *entry;
|
|
GtkObject *scale_data;
|
|
char buf[256];
|
|
|
|
label = gtk_label_new(title);
|
|
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
|
|
gtk_table_attach(table, label, 0, 1, row, row + 1, GTK_FILL, GTK_FILL, 4, 0);
|
|
gtk_widget_show(label);
|
|
|
|
scale_data = gtk_adjustment_new(*value, left, right,
|
|
step,
|
|
step,
|
|
0.0);
|
|
|
|
gtk_signal_connect(GTK_OBJECT(scale_data), "value_changed",
|
|
(GtkSignalFunc) dialog_scale_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_scale_set_digits(GTK_SCALE(scale), 3);
|
|
gtk_range_set_update_policy(GTK_RANGE(scale), GTK_UPDATE_CONTINUOUS);
|
|
gtk_widget_show(scale);
|
|
|
|
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, "%0.3f", *value);
|
|
gtk_entry_set_text(GTK_ENTRY(entry), buf);
|
|
gtk_signal_connect(GTK_OBJECT(entry), "changed",
|
|
(GtkSignalFunc) dialog_entry_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_create_value */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_scale_update(GtkAdjustment *adjustment, gdouble *value)
|
|
{
|
|
GtkWidget *entry;
|
|
char buf[256];
|
|
|
|
if (*value != adjustment->value) {
|
|
*value = adjustment->value;
|
|
|
|
entry = gtk_object_get_user_data(GTK_OBJECT(adjustment));
|
|
sprintf(buf, "%0.3f", *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);
|
|
|
|
dialog_update_preview();
|
|
} /* if */
|
|
} /* dialog_scale_update */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_entry_update(GtkWidget *widget, gdouble *value)
|
|
{
|
|
GtkAdjustment *adjustment;
|
|
gdouble new_value;
|
|
|
|
new_value = atof(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");
|
|
|
|
dialog_update_preview();
|
|
} /* if */
|
|
} /* if */
|
|
} /* dialog_entry_update */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_close_callback(GtkWidget *widget, gpointer data)
|
|
{
|
|
gtk_main_quit();
|
|
} /* dialog_close_callback */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_ok_callback(GtkWidget *widget, gpointer data)
|
|
{
|
|
wpint.run = TRUE;
|
|
gtk_widget_destroy(GTK_WIDGET(data));
|
|
} /* dialog_ok_callback */
|
|
|
|
|
|
/*****/
|
|
|
|
static void
|
|
dialog_cancel_callback(GtkWidget *widget, gpointer data)
|
|
{
|
|
gtk_widget_destroy(GTK_WIDGET(data));
|
|
} /* dialog_cancel_callback */
|