1/*
2 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
3 * Copyright (C) 2007-2009 Torch Mobile, Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "FrameWin.h"
29
30#include "Frame.h"
31#include "FrameView.h"
32#include "GraphicsContext.h"
33#include <wtf/win/GDIObject.h>
34
35namespace WebCore {
36
37extern HDC g_screenDC;
38
39GDIObject<HBITMAP> imageFromRect(Frame* frame, IntRect& ir)
40{
41    int w;
42    int h;
43    FrameView* view = frame->view();
44    if (view->parent()) {
45        ir.setLocation(view->parent()->convertChildToSelf(view, ir.location()));
46        w = ir.width() * frame->pageZoomFactor() + 0.5;
47        h = ir.height() * frame->pageZoomFactor() + 0.5;
48    } else {
49        ir = view->contentsToWindow(ir);
50        w = ir.width();
51        h = ir.height();
52    }
53
54    auto bmpDC = adoptGDIObject(::CreateCompatibleDC(g_screenDC));
55    auto hBmp = adoptGDIObject(::CreateCompatibleBitmap(g_screenDC, w, h));
56    if (!hBmp)
57        return nullptr;
58
59    HGDIOBJ hbmpOld = ::SelectObject(bmpDC.get(), hBmp.get());
60
61    {
62        GraphicsContext gc(bmpDC.get());
63        view->paint(&gc, ir);
64    }
65
66    ::SelectObject(bmpDC.get(), hbmpOld);
67
68    return hBmp;
69}
70
71} // namespace WebCore
72