gimp/plug-ins/DigitalSignature/DigitalSignature.c
1998-01-04 00:43:51 +00:00

1010 lines
30 KiB
C

/**********************************************************************
* Digital Signature Plug-In (Version 1.00)
* 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 <string.h>
#include <math.h>
#include "libgimp/gimp.h"
#include "gtk/gtk.h"
#include "logo.h"
#define ENTRY_WIDTH 200
typedef struct {
gint mode;
gint licence;
gint contents;
char signature[50];
char email[30];
char homepage[50];
char date[20];
gint warningmessage;
} signatureValues;
typedef struct {
gint run;
} signatureInterface;
/* Declare local functions.
*/
static void query(void);
static void run(char *name, int nparams,
GParam *param,
int *nreturn_vals,
GParam **return_vals);
static void drawsignature(GDrawable *drawable);
static void readsignature(GDrawable *drawable);
static gint signature_dialog(void);
static gint signature_warning_dialog(void);
static gint message_dialog(char *, char *, char *);
GtkWidget * signature_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 signatureValues wvals = {
1,0,0,"","","","",1
}; /* wvals */
static signatureInterface 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_STRING, "signature[50]", "Signature (Name of author, company etc.)" },
{ PARAM_STRING, "e-mail[30]", "e-mail address" },
{ PARAM_STRING, "homepage[50]", "Address of the homepage" },
{ PARAM_STRING, "date[20]", "Date of creation" },
{ PARAM_INT8, "mode", "FALSE: Write signature; TRUE: Read signature" },
{ PARAM_INT8, "licence", "FALSE: Freely distributable; TRUE: Restricted distribution" },
{ PARAM_INT8, "contents", "TRUE: Adult only contents" },
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args)/ sizeof(args[0]);
static int nreturn_vals = 0;
gimp_install_procedure("plug_in_signature",
"Puts a hidden signature on your images.",
"",
"Daniel Cotting (cotting@mygale.org, http://www.mygale.org/~cotting)",
"Daniel Cotting (cotting@mygale.org, http://www.mygale.org/~cotting)",
"December, 1997",
"<Image>/Filters/Image/Digital Signature",
"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;
gchar **argv;
gint argc;
gint ending=FALSE;
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_signature", &wvals);
/* Get information from the dialog */
argc = 1;
argv = g_new(gchar *, 1);
argv[0] = g_strdup("apply_signature");
gtk_init(&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
ending=signature_dialog();
if (ending==FALSE) return;
if ((wvals.warningmessage) && (ending!=100))
if (!signature_warning_dialog())
return;
if (ending==100) {wvals.mode=1;} else {wvals.mode=0;}
break;
case RUN_NONINTERACTIVE:
/* Make sure all the arguments are present */
if (nparams != 10)
status = STATUS_CALLING_ERROR;
if (status == STATUS_SUCCESS)
wvals.mode = param[3].data.d_int8;
strncpy (wvals.signature,param[4].data.d_string, 50);
strncpy (wvals.email,param[5].data.d_string, 30);
strncpy (wvals.homepage,param[6].data.d_string, 50);
strncpy (wvals.date,param[7].data.d_string, 20);
wvals.signature[49]='\0';
wvals.email[29]='\0';
wvals.homepage[49]='\0';
wvals.date[19]='\0';
wvals.licence = param[8].data.d_int8;
wvals.contents = param[9].data.d_int8;
argc = 1;
argv = g_new(gchar *, 1);
argv[0] = g_strdup("apply_signature");
gtk_init(&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
tips = gtk_tooltips_new ();
break;
case RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
argc = 1;
argv = g_new(gchar *, 1);
argv[0] = g_strdup("apply_signature");
gtk_init(&argc, &argv);
gtk_rc_parse(gimp_gtkrc());
tips = gtk_tooltips_new ();
gimp_get_data("plug_in_signature", &wvals);
break;
default:
break;
}
if (status == STATUS_SUCCESS) {
if (!wvals.mode) {
gimp_tile_cache_ntiles(2 *(drawable->width / gimp_tile_width() + 1));
gimp_progress_init("Writing signature. Please wait...");
drawsignature(drawable);
if(run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush();
if(run_mode == RUN_INTERACTIVE)
gimp_set_data("plug_in_signature", &wvals, sizeof(signatureValues));
values[0].data.d_status = status;
gimp_drawable_detach(drawable);
} else {
readsignature(drawable);
if(run_mode == RUN_INTERACTIVE)
gimp_set_data("plug_in_signature", &wvals, sizeof(signatureValues));
values[0].data.d_status = status;
gimp_drawable_detach(drawable);
}
}
}
static void
drawsignature(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;
gint value;
long count=1,smallcount=0;
gfloat regionwidth, regionheight, dx, dy;
gfloat a, b, x, y;
glong pixelpos, pos;
guchar bgr_red, bgr_blue, bgr_green;
char *point;
char *point2;
int finished_atleast_once=0;
typedef struct {
char header[3];
char signature[50];
char email[30];
char homepage[50];
char date[20];
char flags[1];
char reserved[45];
} _wholedata;
_wholedata wholedata;
wvals.signature[49]='\0';
wvals.email[29]='\0';
wvals.homepage[49]='\0';
wvals.date[19]='\0';
point2=(char*) &wholedata;
for (i=0;i<200; i++)
{
point2[i]='\0';
}
strncpy(wholedata.header,"SIG",3);
strncpy(wholedata.signature,wvals.signature,50);
strncpy(wholedata.email,wvals.email,30);
strncpy(wholedata.homepage,wvals.homepage,50);
strncpy(wholedata.date,wvals.date,20);
if (wvals.contents) wholedata.flags[1]|=1;
if (wvals.licence) wholedata.flags[1]|=2;
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);
point=(char *)&wholedata;
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;
smallcount++;
if (smallcount==9) {
count++;
point++;
smallcount=1;
}
if ((count % 200)==0) { point=(char *)&wholedata; finished_atleast_once=1;}
pos = ((gint)(iy)*regionwidth + (gint)(ix)) * bytes;
for(i = 0; i < bytes; i++) {
value = src[pos+i];
if (point[0]&(1<<(smallcount-1))){
if (((int)((float)value/2.0))*2==value){
value+=1;
if (value==257) { value=255; }
}
} else {
if (!(((int)((float)value/2.0))*2==value)){
value+=1;
if (value==256) { value=254; }
}
}
dest[pixelpos+i] = value; } }
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);
if (!finished_atleast_once) {
message_dialog("Error", "Could not write signature", "The picture you wanted to process is to small\n"
"to contain the whole signature information.\n"
"Use an image with larger dimensions.");
} else {
message_dialog("Signature written successfully", NULL, "\nYour signature has been written\n"
"successfully! Start the Digital\n"
"Signature plug-in once again and\n"
"select 'read' to view the hidden\n"
"information included in the image.\n");
}
gimp_drawable_flush(drawable);
gimp_drawable_merge_shadow(drawable->id, TRUE);
gimp_drawable_update(drawable->id, x1, y1,(x2 - x1),(y2 - y1));
}
static void
readsignature(GDrawable *drawable)
{
GPixelRgn srcPR;
gint width, height;
gint bytes;
gint row, value;
gint x1, y1, x2, y2, ix, iy, i;
guchar *src;
gint col, finished_atleast_once=FALSE;
gfloat regionwidth, regionheight, dx, dy;
gfloat a, b, x, y;
glong pixelpos, pos;
guchar bgr_red, bgr_blue, bgr_green;
long count=1,smallcount=0;
char displaystring[500];
char * point;
char *point2;
typedef struct {
char header[3];
char signature[50];
char email[30];
char homepage[50];
char date[20];
char flags[1];
char reserved[45];
} _wholedata;
_wholedata wholedata;
point2=(char*) &wholedata;
for (i=0;i<200; i++)
{
point2[i]='\0';
}
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);
src = g_malloc((x2-x1)*(y2-y1)*bytes);
gimp_pixel_rgn_get_rect(&srcPR, src, x1, y1, regionwidth, regionheight);
point=(char *)&wholedata;
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;
pos = ((gint)(iy)*regionwidth + (gint)(ix)) * bytes;
smallcount++;
if (smallcount==9) {
count++;
point++;
smallcount=1;
}
if ((count % 200)==0) {finished_atleast_once=1; goto fin;}
value = src[pos];
if (!(((int)((float)value/2.0))*2==value)){
point[0]|=(1<<(smallcount-1));
}
}
}
fin:
g_free(src);
if (!finished_atleast_once) {
message_dialog("Error", "Could not read signature", "The picture you wanted to process is to small\n"
"to contain the whole signature information.\n"
"Use an image with larger dimensions.");
return;
}
if (strncmp("SIG",wholedata.header,3)) {
message_dialog("Error", "No signature", "The picture you wanted to process contains\n"
"no signature or the signature has been destroyed\n"
"with some image manipulation.");
return;
}
sprintf(displaystring, "----------------------------------\nImage creator:\n%s\n\n"
"E-mail address:\n%s\n\n"
"Internet homepage:\n%s\n\n"
"Date of creation:\n%s\n\n"
"Freely distributable:\n%s\n\n"
"Adult contents:\n%s\n----------------------------------"
, wholedata.signature
, wholedata.email
, wholedata.homepage
, wholedata.date
, (wholedata.flags[1] & 2) ? "Yes" : "No"
, (wholedata.flags[1] & 1) ? "Yes" : "No"
);
message_dialog("Signature read successfully", "Image information", displaystring );
}
void
signature_close_callback(GtkWidget *widget, gpointer data)
{
gtk_widget_destroy(maindlg);
gtk_main_quit();
}
void
signature_logo_close_callback(GtkWidget *widget, gpointer data)
{
gtk_main_quit();
}
void
signature_ok_callback(GtkWidget *widget, gpointer data)
{
bint.run = TRUE;
gtk_widget_destroy(GTK_WIDGET(data));
}
void
signature_ok2_callback(GtkWidget *widget, gpointer data)
{
bint.run = 100;
gtk_widget_destroy(GTK_WIDGET(data));
}
void
signature_logo_ok_callback(GtkWidget *widget, gpointer data)
{
gtk_widget_set_sensitive (maindlg, TRUE);
gtk_widget_destroy(logodlg);
}
void
signature_about_callback(GtkWidget *widget, gpointer data)
{
gtk_widget_set_sensitive (maindlg, FALSE);
signature_logo_dialog();
}
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
signature_entry1_callback (GtkWidget * widget, gpointer data)
{
strncpy (wvals.signature, gtk_entry_get_text (GTK_ENTRY (widget)), 50);
}
static void
signature_entry2_callback (GtkWidget * widget, gpointer data)
{
strncpy (wvals.email, gtk_entry_get_text (GTK_ENTRY (widget)), 30);
}
static void
signature_entry3_callback (GtkWidget * widget, gpointer data)
{
strncpy (wvals.homepage, gtk_entry_get_text (GTK_ENTRY (widget)), 50);
}
static void
signature_entry4_callback (GtkWidget * widget, gpointer data)
{
strncpy (wvals.date, gtk_entry_get_text (GTK_ENTRY (widget)), 20);
}
static void
set_tooltip (GtkTooltips *tooltips, GtkWidget *widget, const char *desc)
{
if (desc && desc[0])
gtk_tooltips_set_tips (tooltips, widget, (char *) desc);
}
static gint
signature_dialog()
{
GtkWidget *dlg;
GtkWidget *label;
GtkWidget *entry;
GtkWidget *button;
GtkWidget *toggle;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
gchar buffer[100];
bint.run=FALSE;
dlg = maindlg = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(dlg), "Digital Signature <cotting@mygale.org>");
gtk_window_position(GTK_WINDOW(dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(dlg), "destroy",
(GtkSignalFunc)signature_close_callback,
NULL);
frame = gtk_frame_new("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);
tips = gtk_tooltips_new ();
/* use black as foreground: */
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);
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
label = gtk_label_new("Signature: ");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_widget_set_usize(entry, ENTRY_WIDTH, 0);
sprintf(buffer, "%s", wvals.signature);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc)signature_entry1_callback,
NULL);
gtk_widget_show(entry);
set_tooltip(tips,entry,"Here you can specify your signature (name of author, company etc.)");
gtk_widget_show(hbox);
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
label = gtk_label_new("E-mail: ");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_widget_set_usize(entry, ENTRY_WIDTH, 0);
sprintf(buffer, "%s", wvals.email);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc)signature_entry2_callback,
NULL);
gtk_widget_show(entry);
set_tooltip(tips,entry,"Here you can specify an e-mail address, where the author/company can be contacted.");
gtk_widget_show(hbox);
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
label = gtk_label_new("Internet address: ");
gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_widget_set_usize(entry, ENTRY_WIDTH, 0);
sprintf(buffer, "%s", wvals.homepage);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc)signature_entry3_callback,
NULL);
gtk_widget_show(entry);
set_tooltip(tips,entry,"Here you can specify an internet address, where the homepage of the author/company can be found.");
gtk_widget_show(hbox);
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
label = gtk_label_new("Date of creation: ");
gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, FALSE, 0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_widget_set_usize(entry, ENTRY_WIDTH, 0);
sprintf(buffer, "%s", wvals.date);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc)signature_entry4_callback,
NULL);
gtk_widget_show(entry);
set_tooltip(tips,entry,"Here you can specify the date, when the image was created.");
gtk_widget_show(hbox);
toggle = gtk_check_button_new_with_label ("Restricted image distribution");
gtk_box_pack_start(GTK_BOX(vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) toggle_update,
&wvals.licence);
gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (toggle), wvals.licence);
gtk_widget_show (toggle);
set_tooltip(tips,toggle,"If this option is enabled, a flag will be set, that the image is not freely distributable.");
toggle = gtk_check_button_new_with_label ("Adult contents");
gtk_box_pack_start(GTK_BOX(vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) toggle_update,
&wvals.contents);
gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (toggle), wvals.contents);
gtk_widget_show (toggle);
set_tooltip(tips,toggle,"If this option is enabled, a flag will be set, that the contents of the image should only be accessible to adults.");
gtk_widget_show(vbox);
gtk_widget_show(frame);
button = gtk_button_new_with_label("Write");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)signature_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,"Close the dialog box and write signature.");
button = gtk_button_new_with_label("Read");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)signature_ok2_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,"Close the dialog box and read signature.");
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,"Close the dialog box without reading or writing a signature.");
button = gtk_button_new_with_label("About...");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)signature_about_callback,button);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area),
button, TRUE, TRUE, 0);
gtk_widget_show(button);
set_tooltip(tips,button,"Show information about the author and the plug-in.");
gtk_widget_show(dlg);
gtk_main();
gdk_flush();
return bint.run;
}
static gint
message_dialog(char * title, char *title2, char * text)
{
GtkWidget *dlg;
GtkWidget *label;
GtkWidget *button;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
bint.run=FALSE;
dlg = gtk_dialog_new();
/* use black as foreground: */
tips_fg.red = 0;
tips_fg.green = 0;
tips_fg.blue = 0;
/* postit yellow (khaki) as background: */
gdk_color_alloc (gtk_widget_get_colormap (dlg), &tips_fg);
tips_bg.red = 61669;
tips_bg.green = 59113;
tips_bg.blue = 35979;
gdk_color_alloc (gtk_widget_get_colormap (dlg), &tips_bg);
gtk_tooltips_set_colors (tips,&tips_bg,&tips_fg);
gtk_window_set_title(GTK_WINDOW(dlg), title);
gtk_window_position(GTK_WINDOW(dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(dlg), "destroy",
(GtkSignalFunc)signature_close_callback,
NULL);
button = gtk_button_new_with_label("OK");
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,"Close this message box and continue");
frame = gtk_frame_new(title2);
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);
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
label = gtk_label_new(text);
gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, FALSE, 0);
gtk_widget_show(label);
gtk_widget_show(hbox);
gtk_widget_show(vbox);
gtk_widget_show(frame);
gtk_widget_show(dlg);
gtk_main();
gdk_flush();
return 0;
}
static gint
signature_warning_dialog()
{
GtkWidget *dlg;
GtkWidget *label;
GtkWidget *button;
GtkWidget *toggle;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
bint.run=FALSE;
dlg = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(dlg), "Warning");
gtk_window_position(GTK_WINDOW(dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(dlg), "destroy",
(GtkSignalFunc)signature_close_callback,
NULL);
button = gtk_button_new_with_label("OK");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc)signature_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,"Proceed with writing the signature.");
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,"Cancel the writing of signature.");
frame = gtk_frame_new("Please note:");
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);
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
label = gtk_label_new("Sensitive Signature Warning:\n\n"
"Remember to save your image in a non-destructive format!\n"
"For indexed images GIF could be a good choice, for RGB\n"
"use BMP/TIFF/TGA etc. Never use a JPEG-compression!\n\n"
"You shouldn't apply any filter to the image after the\n"
"signature has been written. No blur/constrast etc.\n\n"
"This restriction will hopefully be removed in a future\n"
"version of the plug-in (available at cotting.citeweb.net)\n");
gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, FALSE, 0);
gtk_widget_show(label);
toggle = gtk_check_button_new_with_label ("Show warning message every time");
gtk_box_pack_start(GTK_BOX(vbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
(GtkSignalFunc) toggle_update,
&wvals.warningmessage);
gtk_toggle_button_set_state (GTK_TOGGLE_BUTTON (toggle), wvals.warningmessage);
gtk_widget_show (toggle);
set_tooltip(tips,toggle,"If you want this message to be displayed every time you write a signature, then check this box.");
gtk_widget_show(hbox);
gtk_widget_show(vbox);
gtk_widget_show(frame);
gtk_widget_show(dlg);
gtk_main();
gdk_flush();
return bint.run;
}
GtkWidget *
signature_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)signature_logo_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)signature_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_width*logo_height-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"
"Digital Signature\n Plug-In for the GIMP\n"
"Version 1.00\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;
}