Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/vcl/unx/x11/xlimits.cxx b/vcl/unx/x11/xlimits.cxx
new file mode 100644
index 000000000..b8509cbd2
--- /dev/null
+++ b/vcl/unx/x11/xlimits.cxx
@@ -0,0 +1,29 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/log.hxx>
+#include <unx/x11/xlimits.hxx>
+
+Pixmap limitXCreatePixmap(Display *display, Drawable d, unsigned int width, unsigned int height, unsigned int depth)
+{
+    // The X protocol request CreatePixmap puts an upper bound
+    // of 16 bit to the size. And in practice some drivers
+    // fall over with values close to the max.
+
+    // see, e.g. moz#424333, fdo#48961, rhbz#1086714
+    // we've a duplicate of this in canvas :-(
+    if (width > SAL_MAX_INT16-10 || height > SAL_MAX_INT16-10)
+    {
+        SAL_WARN("vcl", "overlarge pixmap: " << width << " x " << height);
+        return None;
+    }
+    return XCreatePixmap(display, d, width, height, depth);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */