mCanPaginatedScroll(PR_TRUE),
PrintPreviewContext::PrintPreviewContext() :  mPageDim(-1,-1,-1,-1),  mCanPaginatedScroll(PR_TRUE),  mDoScaledTwips(PR_TRUE){  SetBackgroundImageDraw(PR_FALSE);  SetBackgroundColorDraw(PR_FALSE);  // Printed images are never animated  mImageAnimationMode = imgIContainer::kDontAnimMode;  mNeverAnimate = PR_TRUE;  mMedium = nsLayoutAtoms::print;}