1 files changed, 146 insertions, 0 deletions
diff --git a/testing/tools/screenshot/gdk-screenshot.cpp b/testing/tools/screenshot/gdk-screenshot.cpp
new file mode 100644
index 0000000000..a666547c40
--- /dev/null
+++ b/testing/tools/screenshot/gdk-screenshot.cpp
@@ -0,0 +1,146 @@
+/*
+ * 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>
+#ifdef MOZ_WAYLAND
+#  include <gdk/gdkwayland.h>
+#  include "mozilla/GUniquePtr.h"
+#  include "mozilla/UniquePtrExtensions.h"
+#  include "mozilla/ScopeExit.h"
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.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;
+}
+
+#if defined(MOZ_WAYLAND)
+static GdkPixbuf* get_screenshot_gnome(char* aAppName) {
+  char* path =
+      g_build_filename(g_get_user_cache_dir(), "mozilla-screenshot", nullptr);
+  g_mkdir_with_parents(path, 0700);
+  char* tmpname = g_strdup_printf("mozilla-screen-%d.png", g_random_int());
+  char* filename = g_build_filename(path, tmpname, nullptr);
+
+  auto autoFree = mozilla::MakeScopeExit([&] {
+    unlink(filename);
+    g_free(path);
+    g_free(tmpname);
+    g_free(filename);
+  });
+
+  mozilla::GUniquePtr<GError> error;
+  char* argv[] = {g_strdup("/usr/bin/gnome-screenshot"), g_strdup("-f"),
+                  filename, nullptr};
+  gboolean ret = g_spawn_sync(
+      nullptr, argv, nullptr, GSpawnFlags(G_SPAWN_LEAVE_DESCRIPTORS_OPEN),
+      nullptr, nullptr, nullptr, nullptr, nullptr, getter_Transfers(error));
+  if (!ret || error) {
+    fprintf(stderr, "%s: g_spawn_sync() of gnome-screenshot failed: %s\n",
+            aAppName, error ? error->message : "");
+    return nullptr;
+  }
+
+  GdkPixbuf* screenshot = gdk_pixbuf_new_from_file(filename, nullptr);
+  if (!screenshot) {
+    fprintf(stderr, "%s: gdk_pixbuf_new_from_file %s failed\n", aAppName,
+            filename);
+  }
+  return screenshot;
+}
+#endif
+
+int main(int argc, char** argv) {
+  gdk_init(&argc, &argv);
+
+  GdkPixbuf* screenshot = nullptr;
+
+#if defined(MOZ_WAYLAND)
+  GdkDisplay* display = gdk_display_get_default();
+  if (display && GDK_IS_WAYLAND_DISPLAY(display)) {
+    screenshot = get_screenshot_gnome(argv[0]);
+    if (!screenshot) {
+      fprintf(stderr, "%s: failed to create screenshot Wayland/GdkPixbuf\n",
+              argv[0]);
+      return 1;
+    }
+  }
+#endif
+  if (!screenshot) {
+    GdkWindow* window = gdk_get_default_root_window();
+    screenshot =
+        gdk_pixbuf_get_from_window(window, 0, 0, gdk_window_get_width(window),
+                                   gdk_window_get_height(window));
+    if (!screenshot) {
+      fprintf(stderr, "%s: failed to create screenshot X11/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