1/*
2 * Copyright (C) 2017 Igalia S.L.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "WebAutomationSession.h"
28
29#include <WebCore/RefPtrCairo.h>
30#include <cairo/cairo.h>
31#include <wtf/text/Base64.h>
32
33namespace WebKit {
34using namespace WebCore;
35
36Optional<String> WebAutomationSession::platformGetBase64EncodedPNGData(const ShareableBitmap::Handle& handle)
37{
38 auto bitmap = ShareableBitmap::create(handle, SharedMemory::Protection::ReadOnly);
39 if (!bitmap)
40 return WTF::nullopt;
41
42 auto surface = bitmap->createCairoSurface();
43 if (!surface)
44 return WTF::nullopt;
45
46 Vector<unsigned char> pngData;
47 cairo_surface_write_to_png_stream(surface.get(), [](void* userData, const unsigned char* data, unsigned length) -> cairo_status_t {
48 auto* pngData = static_cast<Vector<unsigned char>*>(userData);
49 pngData->append(data, length);
50 return CAIRO_STATUS_SUCCESS;
51 }, &pngData);
52
53 if (pngData.isEmpty())
54 return WTF::nullopt;
55
56 return base64Encode(pngData);
57}
58
59} // namespace WebKit
60
61