Remove Tools/ImageDiff folder which has only qt/gtk/efl implementations left.

Tools/ImageDiff/qt/ImageDiff.cpp

-/*
-    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
-*/
-
-#include <QtCore/qmath.h>
-
-#include <QApplication>
-#include <QBuffer>
-#include <QByteArray>
-#include <QImage>
-#include <QStringList>
-
-#include <stdio.h>
-
-int main(int argc, char* argv[])
-{
-    QCoreApplication app(argc, argv);
-
-    qreal tolerance = 0; // Tolerated percentage of error pixels.
-
-    QStringList args = app.arguments();
-    for (int i = 0; i < argc; ++i)
-        if (args[i] == "-t" || args[i] == "--tolerance")
-            tolerance = args[i + 1].toDouble();
-
-    char buffer[2048];
-    QImage actualImage;
-    QImage baselineImage;
-
-    while (fgets(buffer, sizeof(buffer), stdin)) {
-        // remove the CR
-        char* newLineCharacter = strchr(buffer, '\n');
-        if (newLineCharacter)
-            *newLineCharacter = '\0';
-
-        if (!strncmp("Content-Length: ", buffer, 16)) {
-            strtok(buffer, " ");
-            int imageSize = strtol(strtok(0, " "), 0, 10);
-
-            if (imageSize <= 0) {
-                fputs("error, image size must be specified.\n", stdout);
-            } else {
-                unsigned char buffer[2048];
-                QBuffer data;
-
-                // Read all the incoming chunks
-                data.open(QBuffer::WriteOnly);
-                while (imageSize > 0) {
-                    size_t bytesToRead = qMin(imageSize, 2048);
-                    size_t bytesRead = fread(buffer, 1, bytesToRead, stdin);
-                    data.write(reinterpret_cast<const char*>(buffer), bytesRead);
-                    imageSize -= static_cast<int>(bytesRead);
-                }
-
-                // Convert into QImage
-                QImage decodedImage;
-                decodedImage.loadFromData(data.data(), "PNG");
-                decodedImage = decodedImage.convertToFormat(QImage::Format_ARGB32);
-
-                // Place it in the right place
-                if (actualImage.isNull())
-                    actualImage = decodedImage;
-                else
-                    baselineImage = decodedImage;
-            }
-        }
-
-        if (!actualImage.isNull() && !baselineImage.isNull()) {
-
-            if (actualImage.size() != baselineImage.size()) {
-                fprintf(stdout, "diff: 100%% failed\n");
-                fprintf(stderr, "error, test and reference image have different properties.\n");
-                fflush(stderr);
-                fflush(stdout);
-            } else {
-
-                int w = actualImage.width();
-                int h = actualImage.height();
-                QImage diffImage(w, h, QImage::Format_ARGB32);
-
-                int errorCount = 0;
-
-                for (int x = 0; x < w; ++x) {
-                    for (int y = 0; y < h; ++y) {
-                        QRgb pixel = actualImage.pixel(x, y);
-                        QRgb basePixel = baselineImage.pixel(x, y);
-                        qreal red = (qRed(pixel) - qRed(basePixel)) / static_cast<float>(qMax(255 - qRed(basePixel), qRed(basePixel)));
-                        qreal green = (qGreen(pixel) - qGreen(basePixel)) / static_cast<float>(qMax(255 - qGreen(basePixel), qGreen(basePixel)));
-                        qreal blue = (qBlue(pixel) - qBlue(basePixel)) / static_cast<float>(qMax(255 - qBlue(basePixel), qBlue(basePixel)));
-                        qreal alpha = (qAlpha(pixel) - qAlpha(basePixel)) / static_cast<float>(qMax(255 - qAlpha(basePixel), qAlpha(basePixel)));
-                        qreal distance = qSqrt(red * red + green * green + blue * blue + alpha * alpha) / 2.0f;
-                        if (distance >= 1 / qreal(255)) {
-                            errorCount++;
-                            diffImage.setPixel(x, y, qRgb(255, 0, 0));
-                        } else
-                            diffImage.setPixel(x, y, qRgba(qRed(basePixel), qGreen(basePixel), qBlue(basePixel), qAlpha(basePixel) * 0.5));
-                    }
-                }
-
-                qreal difference = 0;
-                if (errorCount)
-                    difference = 100 * errorCount / static_cast<qreal>(w * h);
-
-                if (difference <= tolerance)
-                    fprintf(stdout, "diff: %01.2f%% passed\n", difference);
-                else {
-                    QBuffer buffer;
-                    buffer.open(QBuffer::WriteOnly);
-                    diffImage.save(&buffer, "PNG");
-                    buffer.close();
-                    const QByteArray &data = buffer.data();
-                    printf("Content-Length: %lu\n", static_cast<unsigned long>(data.length()));
-
-                    // We have to use the return value of fwrite to avoid "ignoring return value" gcc warning
-                    // See https://bugs.webkit.org/show_bug.cgi?id=45384 for details.
-                    if (fwrite(data.constData(), 1, data.length(), stdout)) {}
-
-                    fprintf(stdout, "diff: %01.2f%% failed\n", difference);
-                }
-
-                fflush(stdout);
-            }
-            actualImage = QImage();
-            baselineImage = QImage();
-        }
-    }
-
-    return 0;
-}