Implement scale-down for images that would not otherwise fit

on the selected printed page format.

BUG:174447

svn path=/trunk/KDE/kdegraphics/okular/; revision=890775

generators/tiff/generator_tiff.cpp

@@ -433,7 +433,16 @@ bool TIFFGenerator::print( QPrinter& printer )
         if ( i != 0 )
             printer.newPage();
 
-        p.drawImage( 0, 0, image );
+        QSize targetSize = printer.pageRect().size();
+
+        if ( (image.width() < targetSize.width()) && (image.height() < targetSize.height()) )
+        {
+            // draw small images at 100% (don't scale up)
+            p.drawImage( 0, 0, image );
+        } else {
+            // fit to page
+            p.drawImage( 0, 0, image.scaled( targetSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation ) );
+        }
     }
 
     return true;