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gimp/plug-ins/Curtain/Curtain.c

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/**********************************************************************
* Curtain Plug-In (Version 1.03)
* Daniel Cotting (cotting@mygale.org)
**********************************************************************
* Official homepages: http://www.mygale.org/~cotting
* http://cotting.citeweb.net
* http://village.cyberbrain.com/cotting
**********************************************************************
*/
/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <math.h>
#include "libgimp/gimp.h"
#include "gtk/gtk.h"
#include "logo.h"
#define ENTRY_WIDTH 100
typedef struct {
gint horiz;
gint vert;
} CurtainValues;
typedef struct {
gint run;
} CurtainInterface;
/* Declare local functions.
*/
static void query(void);
static void run(char *name, int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
static void drawCurtain(GDrawable *drawable);
static gint curtain_dialog(void);
GtkWidget * curtain_logo_dialog(void);
GtkWidget *maindlg;
GtkWidget *logodlg;
GtkTooltips *tips;
GdkColor tips_fg,tips_bg;
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static CurtainValues wvals = {
TRUE, FALSE
}; /* wvals */
static CurtainInterface bint =
{
FALSE /* run */
};
MAIN()
static void
query(void)
{
static GParamDef args[] =
{
{ PARAM_INT32, "run_mode", "Interactive, non-interactive" },
{ PARAM_IMAGE, "image", "Input image (unused)" },
{ PARAM_DRAWABLE, "drawable", "Input drawable" },
{ PARAM_INT32, "horizontal", "horizontal curtain flag (TRUE/FALSE)" },
{ PARAM_INT32, "vertical", "vertical curtain flag (TRUE/FALSE)" },
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args)/ sizeof(args[0]);
static int nreturn_vals = 0;
gimp_install_procedure("plug_in_curtain",
"Apply a curtain effect",
"",
"Daniel Cotting (cotting@mygale.org, http://www.mygale.org/~cotting)",
"Daniel Cotting (cotting@mygale.org, http://www.mygale.org/~cotting)",
"October, 1997",
"<Image>/Filters/Distorts/Curtain",
"RGB*, GRAY*, INDEXED*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void
run(char *name,
int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals)
{
static GParam values[1];
GDrawable *drawable;
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
run_mode = param[0].data.d_int32;
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
*nreturn_vals = 1;
*return_vals = values;
drawable = gimp_drawable_get(param[2].data.d_drawable);
switch(run_mode) {
case RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data("plug_in_curtain", &wvals);
/* Get information from the dialog */
if (!curtain_dialog())
return;
break;
case RUN_NONINTERACTIVE:
if (nparams != 5)
status = STATUS_CALLING_ERROR;
if (status == STATUS_SUCCESS) {
wvals.horiz = param[3].data.d_int32;
wvals.vert = param[4].data.d_int32; }
break;
case RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data("plug_in_curtain", &wvals);
break;
default:
break;
}
gimp_tile_cache_ntiles(2 *(drawable->width / gimp_tile_width() + 1));
gimp_progress_init("Applying curtain. Please wait...");
drawCurtain(drawable);
if(run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush();
if(run_mode == RUN_INTERACTIVE)
gimp_set_data("plug_in_curtain", &wvals, sizeof(CurtainValues));
values[0].data.d_status = status;
gimp_drawable_detach(drawable);
}
static void
set_tooltip (GtkTooltips *tooltips, GtkWidget *widget, const char *desc)
{
if (desc && desc[0])
gtk_tooltips_set_tips (tooltips, widget, (char *) desc);
}
static void
drawCurtain(GDrawable *drawable)
{
GPixelRgn srcPR, destPR;
gint width, height;
gint bytes;
gint row;
gint x1, y1, x2, y2, ix, iy;
guchar *src, *dest;
gint i, col, position;
gfloat regionwidth, regionheight, dx, dy;
gfloat a, b, x, y;
glong pixelpos, pos;
guchar bgr_red, bgr_blue, bgr_green;
gimp_palette_get_background(&bgr_red, &bgr_green, &bgr_blue);
gimp_drawable_mask_bounds(drawable->id, &x1, &y1, &x2, &y2);
regionwidth = x2-x1;
a = regionwidth/2;
regionheight = y2-y1;
b = regionheight/2;
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
gimp_pixel_rgn_init(&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init(&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
src = g_malloc((x2-x1)*(y2-y1)*bytes);
dest = g_malloc((x2-x1)*(y2-y1)*bytes);
gimp_pixel_rgn_get_rect(&srcPR, src, x1, y1, regionwidth, regionheight);
for(col = 0; col < regionwidth; col++) {
dx = (gfloat)col - a;
for(row = 0; row < regionheight; row++) {
pixelpos = (col+row*regionwidth)*bytes;
dy = -((gfloat)row - b);
x = dx+a;
y = -dy+b;
ix=(int)x;
iy=(int)y;
/*
Flags horiz and vert inversed by mistake!
Corrected this with a small hack in the next lines.
(one more inversion)
*/
if ((((int)((float)ix/2.0))*2==ix) && (wvals.vert)) {
pos = ((gint)(regionheight-1-iy)*regionwidth) * bytes;
}else{
pos = ((gint)(iy)*regionwidth) * bytes;
}
for(i = 0; i < bytes; i++) {
if ((((int)((float)iy/2.0))*2==iy) && (wvals.horiz)) {
position=pos+regionwidth*bytes-ix*bytes+i;}else{position=pos+ix*bytes+i;}
dest[pixelpos+i] = src[position];
}
}
if(((gint)(regionwidth-col) % 5) == 0)
gimp_progress_update((gdouble)col/(gdouble)regionwidth);
}
gimp_pixel_rgn_set_rect(&destPR, dest, x1, y1, regionwidth, regionheight);
g_free(src);
g_free(dest);
gimp_drawable_flush(drawable);
gimp_drawable_merge_shadow(drawable->id, TRUE);
gimp_drawable_update(drawable->id, x1, y1,(x2 - x1),(y2 - y1));
}
static void
curtain_close_callback(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
static void
curtain_ok_callback(GtkWidget *widget, gpointer data)
{
bint.run = TRUE;
gtk_widget_destroy(GTK_WIDGET (data));
}
static void
toggle_update (GtkWidget *widget,
gpointer data)
{
int *toggle_val;
toggle_val = (int *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
*toggle_val = TRUE;
else
*toggle_val = FALSE;
}
static void
curtain_logo_ok_callback(GtkWidget *widget, gpointer data)
{
gtk_widget_set_sensitive (maindlg, TRUE);
gtk_widget_destroy(logodlg);
}
static void
curtain_about_callback(GtkWidget *widget, gpointer data)
{
gtk_widget_set_sensitive (maindlg, FALSE);
curtain_logo_dialog();
}
static gint
curtain_dialog()
{
GtkWidget *dlg;
GtkWidget *button;
GtkWidget *toggle,*toggle2;
GtkWidget *frame;
GtkWidget *vbox;
gchar **argv;
gint argc;
argc = 1;
argv = g_new(gchar *, 1);
argv[0] = g_strdup("apply_curtain_filter");
gtk_init(&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
bint.run=FALSE;
dlg = maindlg = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(dlg), "Curtain");
gtk_window_position(GTK_WINDOW(dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(dlg), "destroy",
(GtkSignalFunc)curtain_close_callback,
NULL);
frame = gtk_frame_new("Parameter Settings");
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_ETCHED_IN);
gtk_container_border_width(GTK_CONTAINER(frame), 10);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->vbox), frame, TRUE, TRUE, 0);
vbox = gtk_vbox_new(FALSE, 5);
gtk_container_border_width(GTK_CONTAINER(vbox), 10);
gtk_container_add(GTK_CONTAINER(frame), vbox);
/* use black as foreground: */
tips = gtk_tooltips_new ();
tips_fg.red = 0;
tips_fg.green = 0;
tips_fg.blue = 0;
/* postit yellow (khaki) as background: */
gdk_color_alloc (gtk_widget_get_colormap (frame), &tips_fg);
tips_bg.red = 61669;
tips_bg.green = 59113;
tips_bg.blue = 35979;
gdk_color_alloc (gtk_widget_get_colormap (frame), &tips_bg);
gtk_tooltips_set_colors (tips,&tips_bg,&tips_fg);
toggle = gtk_check_button_new_with_label ("Apply horizontal curtain");
gtk_box_pack_start(GTK_BOX(vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) toggle_update,
&wvals.horiz);
gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (toggle), wvals.horiz);
gtk_widget_show (toggle);
set_tooltip(tips,toggle,"If this option is enabled, a horizontal curtain effect will be applied.");
toggle2 = gtk_check_button_new_with_label ("Apply vertical curtain");
gtk_box_pack_start(GTK_BOX(vbox), toggle2, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle2), "toggled",
(GtkSignalFunc) toggle_update,
&wvals.vert);
gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (toggle2), wvals.vert);
gtk_widget_show (toggle2);
set_tooltip(tips,toggle2,"If this option is enabled, a vertical curtain effect will be applied.");
gtk_widget_show(vbox);
gtk_widget_show(frame);
button = gtk_button_new_with_label("OK");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)curtain_ok_callback,
dlg);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area),
button, TRUE, TRUE, 0);
gtk_widget_grab_default(button);
gtk_widget_show(button);
set_tooltip(tips,button,"Click here to close this dialog box and apply the curtain effects.");
button = gtk_button_new_with_label("Cancel");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect_object(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)gtk_widget_destroy,
GTK_OBJECT(dlg));
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area),
button, TRUE, TRUE, 0);
gtk_widget_show(button);
set_tooltip(tips,button,"Click here to close this dialog box without altering the image.");
button = gtk_button_new_with_label("About...");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)curtain_about_callback,dlg);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area),
button, TRUE, TRUE, 0);
gtk_widget_show(button);
set_tooltip(tips,button,"Click here for information about the author and the plug-in.");
gtk_widget_show(dlg);
gtk_main();
gdk_flush();
return bint.run;
}
GtkWidget *
curtain_logo_dialog()
{
GtkWidget *xdlg;
GtkWidget *xlabel;
GtkWidget *xbutton;
GtkWidget *xlogo_box;
GtkWidget *xpreview;
GtkWidget *xframe,*xframe2;
GtkWidget *xvbox;
GtkWidget *xhbox;
char *text;
guchar *temp,*temp2;
guchar *datapointer;
gint y,x;
xdlg = logodlg = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(xdlg), "About");
gtk_window_position(GTK_WINDOW(xdlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(xdlg), "destroy",
(GtkSignalFunc)curtain_close_callback,
NULL);
xbutton = gtk_button_new_with_label("OK");
GTK_WIDGET_SET_FLAGS(xbutton, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(xbutton), "clicked",
(GtkSignalFunc)curtain_logo_ok_callback,
xdlg);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(xdlg)->action_area),
xbutton, TRUE, TRUE, 0);
gtk_widget_grab_default(xbutton);
gtk_widget_show(xbutton);
set_tooltip(tips,xbutton,"Click here to close the information box.");
xframe = gtk_frame_new(NULL);
gtk_frame_set_shadow_type(GTK_FRAME(xframe), GTK_SHADOW_ETCHED_IN);
gtk_container_border_width(GTK_CONTAINER(xframe), 10);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(xdlg)->vbox), xframe, TRUE, TRUE, 0);
xvbox = gtk_vbox_new(FALSE, 5);
gtk_container_border_width(GTK_CONTAINER(xvbox), 10);
gtk_container_add(GTK_CONTAINER(xframe), xvbox);
/* The logo frame & drawing area */
xhbox = gtk_hbox_new (FALSE, 5);
gtk_box_pack_start (GTK_BOX (xvbox), xhbox, FALSE, TRUE, 0);
xlogo_box = gtk_vbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (xhbox), xlogo_box, FALSE, FALSE, 0);
xframe2 = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (xframe2), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (xlogo_box), xframe2, FALSE, FALSE, 0);
xpreview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (xpreview), logo_width, logo_height);
temp = g_malloc((logo_width+10)*3);
datapointer=header_data+logo_height*logo_width-1;
for (y = 0; y < logo_height; y++){
temp2=temp;
for (x = 0; x< logo_width; x++) {
HEADER_PIXEL(datapointer,temp2); temp2+=3;}
gtk_preview_draw_row (GTK_PREVIEW (xpreview),
temp,
0, y, logo_width);
}
g_free(temp);
gtk_container_add (GTK_CONTAINER (xframe2), xpreview);
gtk_widget_show (xpreview);
gtk_widget_show (xframe2);
gtk_widget_show (xlogo_box);
gtk_widget_show (xhbox);
xhbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(xvbox), xhbox, TRUE, TRUE, 0);
text = "\nCotting Software Productions\n"
"Bahnhofstrasse 31\n"
"CH-3066 Stettlen (Switzerland)\n\n"
"cotting@mygale.org\n"
"http://www.mygale.org/~cotting\n\n"
"Curtain Plug-In for the GIMP\n"
"Version 1.03\n";
xlabel = gtk_label_new(text);
gtk_box_pack_start(GTK_BOX(xhbox), xlabel, TRUE, FALSE, 0);
gtk_widget_show(xlabel);
gtk_widget_show(xhbox);
gtk_widget_show(xvbox);
gtk_widget_show(xframe);
gtk_widget_show(xdlg);
gtk_main();
gdk_flush();
return xdlg;
}
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