1 /*

     2  * Copyright (C) 2009 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 #include "DumpRenderTree.h"

    31 #include "LayoutTestController.h"

    32 #include "PixelDumpSupport.h"

    33 #include <cstdio>

    34 #include <wtf/Assertions.h>

    35 #include <wtf/RefPtr.h>

    36 

    37 #if PLATFORM(CG)

    38 #include "PixelDumpSupportCG.h"

    39 #elif PLATFORM(CAIRO)

    40 #include "PixelDumpSupportCairo.h"

    41 #endif

    42 

    43 void dumpWebViewAsPixelsAndCompareWithExpected(const std::string& expectedHash)

    44 {

    45     RefPtr<BitmapContext> context;

    46 #if PLATFORM(MAC)

    47     if (gLayoutTestController->isPrinting())

    48         context = createPagedBitmapContext();

    49     else

    50 #endif

    51         context = createBitmapContextFromWebView(gLayoutTestController->testOnscreen(), gLayoutTestController->testRepaint(), gLayoutTestController->testRepaintSweepHorizontally(), gLayoutTestController->dumpSelectionRect());

    52     ASSERT(context);

    53     

    54     // Compute the hash of the bitmap context pixels

    55     char actualHash[33];

    56     computeMD5HashStringForBitmapContext(context.get(), actualHash);

    57     printf("\nActualHash: %s\n", actualHash);

    58     

    59     // Check the computed hash against the expected one and dump image on mismatch

    60     bool dumpImage = true;

    61     if (expectedHash.length() > 0) {

    62         ASSERT(expectedHash.length() == 32);

    63         

    64         printf("\nExpectedHash: %s\n", expectedHash.c_str());

    65         

    66         if (expectedHash == actualHash)     // FIXME: do case insensitive compare

    67             dumpImage = false;

    68     }

    69     

    70     if (dumpImage)

    71       dumpBitmap(context.get());

    72 }

    73 

    74 void printPNG(const unsigned char* data, const size_t dataLength)

    75 {

    76     printf("Content-Type: %s\n", "image/png");

    77     printf("Content-Length: %lu\n", static_cast<unsigned long>(dataLength));

    78 

    79     const size_t bytesToWriteInOneChunk = 1 << 15;

    80     size_t dataRemainingToWrite = dataLength;

    81     while (dataRemainingToWrite) {

    82         size_t bytesToWriteInThisChunk = std::min(dataRemainingToWrite, bytesToWriteInOneChunk);

    83         size_t bytesWritten = fwrite(data, 1, bytesToWriteInThisChunk, stdout);

    84         if (bytesWritten != bytesToWriteInThisChunk)

    85             break;

    86         dataRemainingToWrite -= bytesWritten;

    87         data += bytesWritten;

    88     }

    89 }