+ QRect rectInView;//this is the rect that is visible by the user
+ if (scene()->views().size() > 0) {
+ rectInView = scene()->views()[0]->viewport()->rect();
+ rectInView.moveTo(scene()->views()[0]->horizontalScrollBar()->value(), scene()->views()[0]->verticalScrollBar()->value());
+ rectInView.adjust(-10, -10, 10, 10);//make view rect 10 pixel greater on each site, or repaint after scroll event
+ //kDebug() << scene()->views()[0]->viewport()->rect() << " " << scene()->views()[0]->horizontalScrollBar()->value();
+ }
+ if (rectInView.isNull())
+ return;
+ QPainterPath clippath;
+ clippath.addRect(rectInView);
+ QRectF br = rect();
+ QPainterPath roundRectPathUpper, roundRectPathLower;
+ double roundingY = 20;
+ double roundingX = 20;
+ double offset = 1;
+ painter->setClipRect(option->exposedRect);
+ if (roundingX > br.width() / 2) roundingX = br.width() / 2;
+
+ int br_endx = (int)(br.x() + br .width() - offset);
+ int br_startx = (int)(br.x() + offset);
+ int br_starty = (int)(br.y());
+ int br_halfy = (int)(br.y() + br.height() / 2 - offset);
+ int br_endy = (int)(br.y() + br.height());
+
+
+ // build path around clip
+ roundRectPathUpper.moveTo(br_endx , br_halfy);
+ roundRectPathUpper.arcTo(br_endx - roundingX , br_starty , roundingX, roundingY, 0.0, 90.0);
+ roundRectPathUpper.lineTo(br_startx + roundingX , br_starty);
+ roundRectPathUpper.arcTo(br_startx , br_starty , roundingX, roundingY, 90.0, 90.0);
+ roundRectPathUpper.lineTo(br_startx, br_halfy);
+
+ roundRectPathLower.moveTo(br_startx , br_halfy);
+ roundRectPathLower.arcTo(br_startx , br_endy - roundingY , roundingX, roundingY, 180.0, 90.0);
+ roundRectPathLower.lineTo(br_endx - roundingX , br_endy);
+ roundRectPathLower.arcTo(br_endx - roundingX , br_endy - roundingY, roundingX, roundingY, 270.0, 90.0);
+ roundRectPathLower.lineTo(br_endx , br_halfy);
+
+ QPainterPath resultClipPath = roundRectPathUpper.united(roundRectPathLower);
+
+ painter->setClipPath(resultClipPath.intersected(clippath), Qt::IntersectClip);
+ //painter->fillPath(roundRectPath, brush()); //, QBrush(QColor(Qt::red)));
+ painter->fillRect(br.intersected(rectInView), QBrush(QColor(200, 200, 0, 160)));
+ painter->setClipRect(option->exposedRect);
+ painter->drawPath(resultClipPath.intersected(clippath));