C++ KstPainter::setBrush方法代码示例

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();
}

void KstTopLevelView::updateFocus(const QPoint& pos) {
  if (_activeHandler) {
    _activeHandler->updateFocus(this, pos);
    return;  
  }

  if (_mode == DisplayMode || _mode == Unknown || tracking()) {
    return;
  }
  
  //TODO: make this work better with click-select mode
  
  KstViewObjectPtr p = findDeepestChild(pos, false);
  if (p) {
    KstViewObjectPtr p2 = p;
    while (p2->_parent && p2->_parent->_container) {
      p2 = p2->_parent;
    }
    if (p2->_parent && !p2->_parent->_container) {
      p = p2->_parent;
    }
  }
  if (p) {
    if (p->focused()) {
      setCursorFor(pos, p);
      _focusOn = true; // just in case - seems to be false on occasion
      return;
    }
    p->setFocus(true);
    if (_focusOn) { // something else has the focus, clear it
      clearFocus();
    }
    setCursorFor(pos, p);
    KstPainter painter;
    painter.begin(_w);
    painter.setRasterOp(Qt::NotROP);
    painter.setPen(QPen(Qt::black, 0, Qt::SolidLine));
    painter.setBrush(Qt::NoBrush);
    p->drawFocusRect(painter);
    painter.end();
    _focusOn = true;
    _hoverFocus = p;
  } else {
    clearFocus();
  }
}

void KstTopLevelView::clearFocus() {
  if (_focusOn) {
    _pressDirection = -1;
    _moveOffset = QPoint(-1, -1);
    _moveOffsetSticky = QPoint(0, 0);
    _w->unsetCursor();
    _focusOn = false;
    //recursively<bool>(&KstViewObject::setFocus, false);
    if (_hoverFocus) {
      KstPainter p;
      p.begin(_w);
      p.setViewXForm(true);
      _hoverFocus->setFocus(false);
      p.setRasterOp(Qt::NotROP);
      p.setPen(QPen(Qt::black, 0, Qt::SolidLine));
      p.setBrush(Qt::NoBrush);
      _hoverFocus->drawFocusRect(p);
      p.end();
      _hoverFocus = 0L;
    }
  }
}

void KstViewLine::drawSelectRect(KstPainter& p) {
  p.setPen(QPen(Qt::black, 0));
  p.setBrush(QBrush(Qt::green, Qt::SolidPattern));
  drawFocusRect(p);
}