Example #1
0
void KstViewPicture::paintSelf(KstPainter& p, const QRegion& bounds) {
  p.save();
  if (p.type() != KstPainter::P_PRINT && p.type() != KstPainter::P_EXPORT) {
    if (p.makingMask()) {
      p.setRasterOp(Qt::OrROP);
    } else {
      const QRegion clip(clipRegion());
      KstBorderedViewObject::paintSelf(p, bounds - _myClipMask);
      p.setClipRegion(bounds & clip);
    }
  } else {
    KstBorderedViewObject::paintSelf(p, bounds);
  }

  const QRect cr(contentsRectForDevice(p));
  if (_image.isNull()) {
    // fill with X
    p.setBrush(QBrush(Qt::gray, Qt::SolidPattern));
    p.setPen(QPen(Qt::black, 0, Qt::SolidLine));
    p.drawRect(cr);
    p.drawLine(cr.topLeft(), cr.bottomRight());
    p.drawLine(cr.topRight(), cr.bottomLeft());
  } else {
    assert(!cr.isNull()); // Null view objects are not allowed.  I want to see
                          // how this happens so it can be fixed.

    if (_iCache.isNull() || _iCache.size() != cr.size()) {
      _iCache = _image.copy();
      if (!_iCache.isNull()) {
        _iCache = _iCache.smoothScale(cr.size());
      }
    }
    if (!_iCache.isNull()) {
      if (p.makingMask()) {
        // which indicates clipping / BW mode
        if (_iCache.hasAlphaBuffer()) {
          p.drawImage(cr.topLeft(), _iCache.createAlphaMask());
        } else {
          p.setBrush(Qt::color1);
          p.drawRect(cr);
        }
      } else {
        p.drawImage(cr.topLeft(), _iCache);
      }
    }
  }
  p.restore();
}