1 /*

     2  * Copyright (C) 2007 Apple, Inc. All rights reserved.

     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  *

     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  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

    14  *     its contributors may be used to endorse or promote products derived

    15  *     from this software without specific prior written permission.

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    27  */

    28 

    29 #include "config.h"

    30 

    31 #if PLATFORM(CG)

    32 #include "PixelDumpSupportCG.h"

    33 #elif PLATFORM(CAIRO)

    34 #include "PixelDumpSupportCairo.h"

    35 #endif

    36 

    37 #include "DumpRenderTree.h"

    38 

    39 #if PLATFORM(CG)

    40 // Note: Must be included *after* DumpRenderTree.h to avoid compile error.

    41 #include <CoreGraphics/CGBitmapContext.h>

    42 #endif

    43 

    44 #include <wtf/Assertions.h>

    45 #include <wtf/RetainPtr.h>

    46 

    47 PassRefPtr<BitmapContext> createBitmapContextFromWebView(bool onscreen, bool incrementalRepaint, bool sweepHorizontally, bool drawSelectionRect)

    48 {

    49     RECT frame;

    50     if (!GetWindowRect(webViewWindow, &frame))

    51         return 0;

    52 

    53     BITMAPINFO bmp = {0};

    54     bmp.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

    55     bmp.bmiHeader.biWidth = frame.right - frame.left;

    56     bmp.bmiHeader.biHeight = -(frame.bottom - frame.top);

    57     bmp.bmiHeader.biPlanes = 1;

    58     bmp.bmiHeader.biBitCount = 32;

    59     bmp.bmiHeader.biCompression = BI_RGB;

    60 

    61     void* bits = 0;

    62     HBITMAP bitmap = CreateDIBSection(0, &bmp, DIB_RGB_COLORS, &bits, 0, 0);

    63 

    64     HDC memoryDC = CreateCompatibleDC(0);

    65     SelectObject(memoryDC, bitmap);

    66     SendMessage(webViewWindow, WM_PRINTCLIENT, reinterpret_cast<WPARAM>(memoryDC), PRF_CLIENT | PRF_CHILDREN | PRF_OWNED);

    67     DeleteDC(memoryDC);

    68 

    69     BITMAP info = {0};

    70     GetObject(bitmap, sizeof(info), &info);

    71     ASSERT(info.bmBitsPixel == 32);

    72 

    73 #if PLATFORM(CG)

    74     RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());

    75     CGContextRef context = CGBitmapContextCreate(info.bmBits, info.bmWidth, info.bmHeight, 8,

    76                                                 info.bmWidthBytes, colorSpace.get(), kCGBitmapByteOrder32Little | kCGImageAlphaPremultipliedFirst);

    77 #elif PLATFORM(CAIRO) 

    78     cairo_surface_t* image = cairo_image_surface_create_for_data((unsigned char*)info.bmBits, CAIRO_FORMAT_ARGB32, 

    79                                                       info.bmWidth, info.bmHeight, info.bmWidthBytes); 

    80     cairo_t* context = cairo_create(image); 

    81     cairo_surface_destroy(image); 

    82 #endif 

    83 

    84    return BitmapContext::createByAdoptingBitmapAndContext(bitmap, context);

    85 }