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gimp/plug-ins/common/screenshot.c

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/*
* ScreenShot plug-in
* Copyright 1998-2000 Sven Neumann <sven@gimp.org>
*
* Any suggestions, bug-reports or patches are very welcome.
*
* This plug-in uses the X-utility xwd to grab an image from the screen
* and the xwd-plug-in created by Peter Kirchgessner (pkirchg@aol.com)
* to load this image into the gimp.
* Hence its nothing but a simple frontend to those utilities.
*/
/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <errno.h>
#include <sys/wait.h>
#include <unistd.h>
#ifdef __EMX__
#include <process.h>
#endif
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
/* Defines */
#define PLUG_IN_NAME "extension_screenshot"
#ifndef XWD
#define XWD "xwd"
#endif
typedef struct
{
gboolean root;
gchar *window_id;
guint delay;
gboolean decor;
} ScreenShotValues;
static ScreenShotValues shootvals =
{
FALSE, /* root window */
NULL, /* window ID */
0, /* delay */
TRUE, /* decorations */
};
static void query (void);
static void run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static void shoot (void);
static gboolean shoot_dialog (void);
static void shoot_ok_callback (GtkWidget *widget,
gpointer data);
static void shoot_delay (gint32 delay);
static gint shoot_delay_callback (gpointer data);
/* Global Variables */
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run /* run_proc */
};
/* the image that will be returned */
gint32 image_ID = -1;
gboolean run_flag = FALSE;
/* Functions */
MAIN ()
static void
query (void)
{
static GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_INT32, "root", "Root window { TRUE, FALSE }" },
{ GIMP_PDB_STRING, "window_id", "Window id" }
};
static gint nargs = sizeof (args) / sizeof (args[0]);
static GimpParamDef return_vals[] =
{
{ GIMP_PDB_IMAGE, "image", "Output image" }
};
static gint nreturn_vals = sizeof (return_vals) / sizeof (return_vals[0]);
gimp_install_procedure (PLUG_IN_NAME,
"Creates a screenshot of a single window or the whole screen",
"This extension serves as a simple frontend to the "
"X-window utility xwd and the xwd-file-plug-in. "
"After specifying some options, xwd is called, the "
"user selects a window, and the resulting image is "
"loaded into the gimp. Alternatively the whole "
"screen can be grabbed. When called non-interactively "
"it may grab the root window or use the window-id "
"passed as a parameter.",
"Sven Neumann <sven@gimp.org>",
"1998 - 2000",
"v0.9.5 (2000/10/29)",
N_("<Toolbox>/File/Acquire/Screen Shot..."),
NULL,
GIMP_EXTENSION,
nargs, nreturn_vals,
args, return_vals);
}
static void
run (gchar *name,
gint nparams,
GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
/* Get the runmode from the in-parameters */
GimpRunModeType run_mode = param[0].data.d_int32;
/* status variable, use it to check for errors in invocation usualy only
* during non-interactive calling
*/
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
/* always return at least the status to the caller. */
static GimpParam values[1];
/* initialize the return of the status */
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
*nreturn_vals = 1;
*return_vals = values;
/* how are we running today? */
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data from a previous run */
gimp_get_data (PLUG_IN_NAME, &shootvals);
shootvals.window_id = NULL;
INIT_I18N_UI ();
/* Get information from the dialog */
if (!shoot_dialog ())
status = GIMP_PDB_EXECUTION_ERROR;
break;
case GIMP_RUN_NONINTERACTIVE:
if (nparams == 3)
{
shootvals.root = param[1].data.d_int32;
shootvals.window_id = (gchar*) param[2].data.d_string;
shootvals.delay = 0;
shootvals.decor = FALSE;
}
else
status = GIMP_PDB_CALLING_ERROR;
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data from a previous run */
gimp_get_data (PLUG_IN_NAME, &shootvals);
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
if (shootvals.delay > 0)
shoot_delay (shootvals.delay);
/* Run the main function */
shoot ();
status = (image_ID != -1) ? GIMP_PDB_SUCCESS : GIMP_PDB_EXECUTION_ERROR;
}
if (status == GIMP_PDB_SUCCESS)
{
if (run_mode == GIMP_RUN_INTERACTIVE)
{
/* Store variable states for next run */
gimp_set_data (PLUG_IN_NAME, &shootvals, sizeof (ScreenShotValues));
/* display the image */
gimp_display_new (image_ID);
}
/* set return values */
*nreturn_vals = 2;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_image = image_ID;
}
values[0].data.d_status = status;
}
/* The main ScreenShot function */
static void
shoot (void)
{
GimpParam *params;
gint retvals;
gchar *tmpname;
gchar *xwdargv[7]; /* need a maximum of 7 arguments to xwd */
gdouble xres, yres;
gint pid;
gint wpid;
gint status;
gint i = 0;
/* get a temp name with the right extension */
tmpname = gimp_temp_name ("xwd");
/* construct the xwd arguments */
xwdargv[i++] = XWD;
xwdargv[i++] = "-out";
xwdargv[i++] = tmpname;
if ( shootvals.root == TRUE )
xwdargv[i++] = "-root";
else
{
if (shootvals.decor == TRUE )
xwdargv[i++] = "-frame";
if (shootvals.window_id != NULL)
{
xwdargv[i++] = "-id";
xwdargv[i++] = shootvals.window_id;
}
}
xwdargv[i] = NULL;
#ifndef __EMX__
/* fork off a xwd process */
if ((pid = fork ()) < 0)
{
g_message ("screenshot: fork failed: %s\n", g_strerror (errno));
return;
}
else if (pid == 0)
{
execvp (XWD, xwdargv);
/* What are we doing here? exec must have failed */
g_message ("screenshot: exec failed: xwd: %s\n", g_strerror (errno));
return;
}
else
#else /* __EMX__ */
pid = spawnvp (P_NOWAIT, XWD, xwdargv);
if (pid == -1)
{
g_message ("screenshot: spawn failed: %s\n", g_strerror (errno));
return;
}
#endif
{
status = -1;
wpid = waitpid (pid, &status, 0);
if ((wpid < 0) || !WIFEXITED (status))
{
/* the tmpfile may have been created even if xwd failed */
unlink (tmpname);
g_free (tmpname);
g_message ("screenshot: xwd didn't work\n");
return;
}
}
/* now load the tmpfile using the xwd-plug-in */
params = gimp_run_procedure ("file_xwd_load",
&retvals,
GIMP_PDB_INT32, 1,
GIMP_PDB_STRING, tmpname,
GIMP_PDB_STRING, tmpname,
GIMP_PDB_END);
if (params[0].data.d_status == GIMP_PDB_SUCCESS)
{
image_ID = params[1].data.d_image;
}
gimp_destroy_params (params, retvals);
/* get rid of the tmpfile */
unlink (tmpname);
g_free (tmpname);
if (image_ID != -1)
{
/* figure out the monitor resolution and set the image to it */
gimp_get_monitor_resolution (&xres, &yres);
gimp_image_set_resolution (image_ID, xres, yres);
/* unset the image filename */
gimp_image_set_filename (image_ID, "");
}
return;
}
/* ScreenShot dialog */
static void
shoot_ok_callback (GtkWidget *widget,
gpointer data)
{
run_flag = TRUE;
gtk_widget_destroy (GTK_WIDGET (data));
}
static gboolean
shoot_dialog (void)
{
GtkWidget *dialog;
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *button;
GtkWidget *decor_button;
GtkWidget *spinner;
GtkWidget *sep;
GSList *radio_group = NULL;
GtkObject *adj;
gimp_ui_init ("screenshot", FALSE);
/* main dialog */
dialog = gimp_dialog_new (_("Screen Shot"), "screenshot",
gimp_standard_help_func, "filters/screenshot.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), shoot_ok_callback,
NULL, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect (GTK_OBJECT (dialog), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit),
NULL);
main_vbox = gtk_vbox_new (FALSE, 4);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 6);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), main_vbox,
TRUE, TRUE, 0);
gtk_widget_show (main_vbox);
/* single window */
frame = gtk_frame_new (_("Grab"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
button = gtk_radio_button_new_with_label (radio_group, _("Single Window"));
radio_group = gtk_radio_button_group (GTK_RADIO_BUTTON (button));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (button), "toggled",
(GtkSignalFunc) gimp_radio_button_update,
&shootvals.root);
gtk_object_set_user_data (GTK_OBJECT (button), (gpointer) FALSE);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), ! shootvals.root);
gtk_widget_show (button);
/* with decorations */
hbox = gtk_hbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
decor_button =
gtk_check_button_new_with_label (_("With Decorations"));
gtk_signal_connect (GTK_OBJECT (decor_button), "toggled",
(GtkSignalFunc) gimp_toggle_button_update,
&shootvals.decor);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (decor_button),
shootvals.decor);
gtk_object_set_data (GTK_OBJECT (button), "set_sensitive", decor_button);
gtk_box_pack_end (GTK_BOX (hbox), decor_button, FALSE, FALSE, 0);
gtk_widget_show (decor_button);
gtk_widget_show (hbox);
sep = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (vbox), sep, FALSE, FALSE, 0);
gtk_widget_show (sep);
/* root window */
button = gtk_radio_button_new_with_label (radio_group, _("Whole Screen"));
radio_group = gtk_radio_button_group (GTK_RADIO_BUTTON (button));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (button), "toggled",
(GtkSignalFunc) gimp_radio_button_update,
&shootvals.root);
gtk_object_set_user_data (GTK_OBJECT (button), (gpointer) TRUE);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), shootvals.root);
gtk_widget_show (button);
gtk_widget_show (vbox);
gtk_widget_show (frame);
/* with delay */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
label = gtk_label_new (_("after"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
adj = gtk_adjustment_new (shootvals.delay, 0.0, 100.0, 1.0, 5.0, 0.0);
gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
gimp_int_adjustment_update,
&shootvals.delay);
spinner = gtk_spin_button_new (GTK_ADJUSTMENT (adj), 0, 0);
gtk_box_pack_start (GTK_BOX (hbox), spinner, FALSE, FALSE, 0);
gtk_widget_show (spinner);
label = gtk_label_new (_("Seconds Delay"));
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_widget_show (hbox);
gtk_widget_show (dialog);
gtk_main ();
return run_flag;
}
/* delay functions */
void
shoot_delay (gint delay)
{
gint timeout;
timeout = gtk_timeout_add (1000, shoot_delay_callback, &delay); gtk_main ();
}
gint
shoot_delay_callback (gpointer data)
{
gint *seconds_left = (gint *)data;
(*seconds_left)--;
if (!*seconds_left)
gtk_main_quit();
return *seconds_left;
}
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