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/*
* Copyright (c) 2009, The Mozilla Foundation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Mozilla Foundation nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY The Mozilla Foundation ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL The Mozilla Foundation BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Contributors:
* Ted Mielczarek <ted.mielczarek@gmail.com>
* Karl Tomlinson <karlt+@karlt.net>
*/
/*
* gdk-screenshot.cpp: Save a screenshot of the root window in .png format.
* If a filename is specified as the first argument on the commandline,
* then the image will be saved to that filename. Otherwise, the image will
* be written to stdout.
*/
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#ifdef HAVE_LIBXSS
#include <X11/extensions/scrnsaver.h>
#endif
#include <errno.h>
#include <stdio.h>
gboolean save_to_stdout(const gchar *buf, gsize count,
GError **error, gpointer data)
{
size_t written = fwrite(buf, 1, count, stdout);
if (written != count) {
g_set_error(error, G_FILE_ERROR, g_file_error_from_errno(errno),
"Write to stdout failed: %s", g_strerror(errno));
return FALSE;
}
return TRUE;
}
int main(int argc, char** argv)
{
gdk_init(&argc, &argv);
#if defined(HAVE_LIBXSS) && defined(MOZ_WIDGET_GTK)
int event_base, error_base;
Bool have_xscreensaver =
XScreenSaverQueryExtension(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
&event_base, &error_base);
if (!have_xscreensaver) {
fprintf(stderr, "No XScreenSaver extension on display\n");
} else {
XScreenSaverInfo* info = XScreenSaverAllocInfo();
if (!info) {
fprintf(stderr, "%s: Out of memory\n", argv[0]);
return 1;
}
XScreenSaverQueryInfo(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()),
GDK_ROOT_WINDOW(), info);
const char* state;
const char* til_or_since = nullptr;
switch (info->state) {
case ScreenSaverOff:
state = "Off";
til_or_since = "XScreenSaver will activate after another %lu seconds idle time\n";
break;
case ScreenSaverOn:
state = "On";
if (info->til_or_since) {
til_or_since = "XScreenSaver idle timer activated %lu seconds ago\n";
} else {
til_or_since = "XScreenSaver idle activation is disabled\n";
}
break;
case ScreenSaverDisabled:
state = "Disabled";
break;
default:
state = "unknown";
}
const char* kind;
switch (info->kind) {
case ScreenSaverBlanked:
kind = "Blanked";
break;
case ScreenSaverInternal:
state = "Internal";
break;
case ScreenSaverExternal:
state = "External";
break;
default:
state = "unknown";
}
fprintf(stderr, "XScreenSaver state: %s\n", state);
if (til_or_since) {
fprintf(stderr, "XScreenSaver kind: %s\n", kind);
fprintf(stderr, til_or_since, info->til_or_since / 1000);
}
fprintf(stderr, "User input has been idle for %lu seconds\n", info->idle / 1000);
XFree(info);
}
#endif
GdkPixbuf* screenshot = nullptr;
GdkWindow* window = gdk_get_default_root_window();
#if (MOZ_WIDGET_GTK == 2)
screenshot = gdk_pixbuf_get_from_drawable(nullptr, window, nullptr,
0, 0, 0, 0,
gdk_screen_width(),
gdk_screen_height());
#else
screenshot = gdk_pixbuf_get_from_window(window, 0, 0,
gdk_window_get_width(window),
gdk_window_get_height(window));
#endif
if (!screenshot) {
fprintf(stderr, "%s: failed to create screenshot GdkPixbuf\n", argv[0]);
return 1;
}
GError* error = nullptr;
if (argc > 1) {
gdk_pixbuf_save(screenshot, argv[1], "png", &error, nullptr);
} else {
gdk_pixbuf_save_to_callback(screenshot, save_to_stdout, nullptr,
"png", &error, nullptr);
}
if (error) {
fprintf(stderr, "%s: failed to write screenshot as png: %s\n",
argv[0], error->message);
return error->code;
}
return 0;
}
// These options are copied from mozglue/build/AsanOptions.cpp
#ifdef MOZ_ASAN
extern "C"
const char* __asan_default_options() {
return "allow_user_segv_handler=1:alloc_dealloc_mismatch=0:detect_leaks=0";
}
#endif
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