1 files changed, 33 insertions, 2 deletions

diff --git a/tests/system/auto/imagecompare.cpp b/tests/system/auto/imagecompare.cpp
index 4e562a8..c68f346 100644
--- a/tests/system/auto/imagecompare.cpp
+++ b/tests/system/auto/imagecompare.cpp
@@ -44,15 +44,20 @@
 ImageCompare::ImageCompare(QObject *parent) : QObject(parent){
 }
 
-bool ImageCompare::CompareImages(QImage actual, QImage expected){
+bool ImageCompare::ComparePixels(QImage actual, QImage expected, int tolerance, QString filename){
 
     bool result = true;
     bool compareAlpha, compareRed, compareGreen, compareBlue;
-    const int tolerance = 1;
+    int diffPixelCount = 0;
+    QImage diffImage(300, 300, QImage::Format_ARGB32);
+    diffImage.fill(Qt::white);
 
     for(int y = 0; y < 300; y++){
         for(int x = 0; x < 300; x++){
 
+            // Pixel difference is set initially to false.
+            bool diff = false;
+
             // Gets the color of the pixel in the given position.
             QRgb pixelActual = actual.pixel(x,y);
             QRgb pixelExpected = expected.pixel(x,y);
@@ -63,8 +68,34 @@ bool ImageCompare::CompareImages(QImage actual, QImage expected){
             compareGreen = (abs(qGreen(pixelActual) - qGreen(pixelExpected)) <= tolerance);
             compareBlue = (abs(qBlue(pixelActual) - qBlue(pixelExpected)) <= tolerance);
 
+            // Result value holds the overall boolean status are the compared images the same or different.
             result &= (compareAlpha && compareRed && compareGreen && compareBlue);
+
+            // When the compared pixels differ, diff value is set to true and the pixel position is marked to an additional image file.
+            diff = !(compareAlpha && compareRed && compareGreen && compareBlue);
+            if (diff == true){
+                diffImage.setPixel(x, y, qRgba(255, 0, 0, 255));
+                ++diffPixelCount;
+            }
         }
     }
+
+    if(result == false){
+        qDebug() << "The percentage difference in" << filename << ":" << diffPixelCount << "/" << 300*300 << "=" << 100.0*diffPixelCount/(300*300);
+        QDir wd = QDir().dirName();
+        wd.mkdir("diffImages");
+        diffImage.save("diffImages/" + filename);
+    }
+
     return result;
 }
+
+bool ImageCompare::CompareSizes(QImage actual, QImage expected){
+    bool sizesMatch = true;
+    if (actual.width() == expected.width() && actual.height() == expected.height()){
+        sizesMatch = true;
+    }
+    else sizesMatch = false;
+
+    return sizesMatch;
+}