C++ QTextOption::setUseDesignMetrics方法代码示例

void Text::layout()
      {
      if (styled() && !_editMode) {
            SimpleText::layout();
            }
      else {
            _doc->setDefaultFont(textStyle().font(spatium()));
            qreal w = -1.0;
            qreal x = 0.0;
            qreal y = 0.0;
            if (parent() && layoutToParentWidth()) {
                  w = parent()->width();
                  if (parent()->type() == HBOX || parent()->type() == VBOX || parent()->type() == TBOX) {
                        Box* box = static_cast<Box*>(parent());
                        x += box->leftMargin() * MScore::DPMM;
                        y += box->topMargin() * MScore::DPMM;
                        w = box->width()   - ((box->leftMargin() + box->rightMargin()) * MScore::DPMM);
                        }
                  }

            QTextOption to = _doc->defaultTextOption();
            to.setUseDesignMetrics(true);
            to.setWrapMode(w <= 0.0 ? QTextOption::NoWrap : QTextOption::WrapAtWordBoundaryOrAnywhere);
            _doc->setDefaultTextOption(to);

            if (w < 0.0)
                  w = _doc->idealWidth();
            _doc->setTextWidth(w);

            setbbox(QRectF(QPointF(0.0, 0.0), _doc->size()));
            if (hasFrame())
                  layoutFrame();
            _doc->setModified(false);
            textStyle().layout(this);      // process alignment

#if 0 // TODO  TEXT_STYLE_TEXTLINE
            if ((textStyle().align() & ALIGN_VCENTER) && (textStyle() == TEXT_STYLE_TEXTLINE)) {
                  // special case: vertically centered text with TextLine needs to
                  // take into account the line width
                  TextLineSegment* tls = static_cast<TextLineSegment*>(parent());
                  TextLine* tl = tls->textLine();
                  if (tl) {
                        qreal textlineLineWidth = point(tl->lineWidth());
                        rypos() -= textlineLineWidth * .5;
                        }
                  }
#endif
            rxpos() += x;
            rypos() += y;
            }
      if (parent() && parent()->type() == SEGMENT) {
            Segment* s = static_cast<Segment*>(parent());
            rypos() += s ? s->measure()->system()->staff(staffIdx())->y() : 0.0;
            }
      adjustReadPos();
      }

void NodeLabel::setText(const QString & text)
{
    // update the text
    m_text = QStaticText(text);
    m_text.setTextFormat(Qt::PlainText);
    QTextOption textOption =
        QTextOption(Qt::AlignHCenter | Qt::AlignBaseline);
    textOption.setUseDesignMetrics(false);
    m_text.setTextOption(textOption);
    updateStyle();
}

void Text::createDoc()
      {
      _doc = new QTextDocument(0);
      _doc->setDocumentMargin(-2.0);
      _doc->setUseDesignMetrics(true);
      _doc->setUndoRedoEnabled(true);
      _doc->documentLayout()->setProperty("cursorWidth", QVariant(2));
      QTextOption to = _doc->defaultTextOption();
      to.setUseDesignMetrics(true);
      to.setWrapMode(QTextOption::NoWrap);
      _doc->setDefaultTextOption(to);
      _doc->setDefaultFont(textStyle().font(spatium()));
      }

static PyObject *meth_QTextOption_setUseDesignMetrics(PyObject *sipSelf, PyObject *sipArgs)
{
    PyObject *sipParseErr = NULL;

    {
        bool a0;
        QTextOption *sipCpp;

        if (sipParseArgs(&sipParseErr, sipArgs, "Bb", &sipSelf, sipType_QTextOption, &sipCpp, &a0))
        {
            sipCpp->setUseDesignMetrics(a0);

            Py_INCREF(Py_None);
            return Py_None;
        }
    }

    /* Raise an exception if the arguments couldn't be parsed. */
    sipNoMethod(sipParseErr, sipName_QTextOption, sipName_setUseDesignMetrics, doc_QTextOption_setUseDesignMetrics);

    return NULL;
}

Text::Text(Score* s)
   : Element(s)
      {
#if 0
      _doc = new QTextDocument(0);
      _doc->setDocumentMargin(1.0);
      _doc->setUseDesignMetrics(true);
      _doc->setUndoRedoEnabled(true);

      QTextOption to = _doc->defaultTextOption();
      to.setUseDesignMetrics(true);
      to.setWrapMode(QTextOption::NoWrap);
      _doc->setDefaultTextOption(to);
#endif

      setFlag(ELEMENT_MOVABLE, true);
      _textStyle = TEXT_STYLE_INVALID;
      _styled    = false;
      _layoutToParentWidth = false;
      setSubtype(0);
      _lineSpacing = 0.0;
      _lineHeight  = 0.0;
      _baseLine    = 0.0;
      }

void Text::layout1()
      {
      if (styled() && !_editMode)
            SimpleText::layout();
      else {
            _doc->setDefaultFont(textStyle().font(spatium()));
            qreal w = -1.0;
            QPointF o(textStyle().offset(spatium()));

            if (parent() && layoutToParentWidth()) {
                  Element* e = parent();
                  w = e->width();
                  if (e->type() == HBOX || e->type() == VBOX || e->type() == TBOX) {
                        Box* b = static_cast<Box*>(e);
                        w -= ((b->leftMargin() + b->rightMargin()) * MScore::DPMM);
                        }
                  }

            QTextOption to = _doc->defaultTextOption();
            to.setUseDesignMetrics(true);
            to.setWrapMode(w <= 0.0 ? QTextOption::NoWrap : QTextOption::WrapAtWordBoundaryOrAnywhere);
            _doc->setDefaultTextOption(to);

            if (w <= 0.0)
                  w = _doc->idealWidth();
            _doc->setTextWidth(w);

            QSizeF size(_doc->size());

            if (align() & ALIGN_BOTTOM)
                  o.ry() -= size.height();
            else if (align() & ALIGN_VCENTER)
                  o.ry() -= (size.height() * .5);
            else if (align() & ALIGN_BASELINE)
                  o.ry() -= baseLine();

            if (align() & ALIGN_RIGHT)
                  o.rx() -= size.width();
            else if (align() & ALIGN_HCENTER)
                  o.rx() -= (size.width() * .5);

            setbbox(QRectF(QPointF(0.0, 0.0), size));
            _doc->setModified(false);
            setPos(o);
            }
      if (parent()) {
            Element* e = parent();
            qreal w, h, xo, yo;
            if (layoutToParentWidth()) {
                  if (e->type() == HBOX || e->type() == VBOX || e->type() == TBOX) {
                        // consider inner margins of frame
                        Box* b = static_cast<Box*>(e);
                        xo = b->leftMargin() * MScore::DPMM;
                        yo = b->topMargin()  * MScore::DPMM;
                        w  = b->width()  - xo - b->rightMargin() * MScore::DPMM;
                        h  = b->height() - yo - b->bottomMargin()   * MScore::DPMM;
                        }
                  else {
                        w  = e->width();
                        h  = e->height();
                        xo = 0.0;
                        yo = 0.0;
                        }
                  QPointF ro(_textStyle.reloff() * .01);
                  rxpos() += xo + ro.x() * w;
                  rypos() += yo + ro.y() * h;
                  }
            if (e->type() == SEGMENT) {
                  Segment* s = static_cast<Segment*>(e);
                  rypos() += s->measure()->system()->staff(staffIdx())->y();
                  }
            }

      if (hasFrame())
            layoutFrame();
      }

void Text::layout()
      {
#if 0
      QSizeF pageSize(-1.0, 1000000);
      setPos(0.0, 0.0);
      if (parent() && _layoutToParentWidth) {
            pageSize.setWidth(parent()->width());
            if (parent()->type() == HBOX || parent()->type() == VBOX || parent()->type() == TBOX) {
                  Box* box = static_cast<Box*>(parent());
                  rxpos() += box->leftMargin() * DPMM;
                  rypos() += box->topMargin() * DPMM;
                  // pageSize.setHeight(box->height() - (box->topMargin() + box->bottomMargin()) * DPMM);
                  pageSize.setWidth(box->width()   - (box->leftMargin() + box->rightMargin()) * DPMM);
                  }
            }

      QTextOption to = _doc->defaultTextOption();
      to.setUseDesignMetrics(true);
      to.setWrapMode(pageSize.width() <= 0.0 ? QTextOption::NoWrap : QTextOption::WrapAtWordBoundaryOrAnywhere);
      _doc->setDefaultTextOption(to);

      if (pageSize.width() <= 0.0)
            _doc->setTextWidth(_doc->idealWidth());
      else
            _doc->setPageSize(pageSize);

      if (hasFrame()) {
            frame = QRectF();
            for (QTextBlock tb = _doc->begin(); tb.isValid(); tb = tb.next()) {
                  QTextLayout* tl = tb.layout();
                  int n = tl->lineCount();
                  for (int i = 0; i < n; ++i)
                        // frame |= tl->lineAt(0).naturalTextRect().translated(tl->position());
                        frame |= tl->lineAt(0).rect().translated(tl->position());
                  }
            if (circle()) {
                  if (frame.width() > frame.height()) {
                        frame.setY(frame.y() + (frame.width() - frame.height()) * -.5);
                        frame.setHeight(frame.width());
                        }
                  else {
                        frame.setX(frame.x() + (frame.height() - frame.width()) * -.5);
                        frame.setWidth(frame.height());
                        }
                  }
            qreal w = (paddingWidth() + frameWidth() * .5) * DPMM;
            frame.adjust(-w, -w, w, w);
            w = frameWidth() * DPMM;
            _bbox = frame.adjusted(-w, -w, w, w);
            }
      else {
            _bbox = QRectF(QPointF(0.0, 0.0), _doc->size()); //_doc->documentLayout()->frameBoundingRect(_doc->rootFrame());
            }
      _doc->setModified(false);
      style().layout(this);      // process alignment

      if ((style().align() & ALIGN_VCENTER) && (subtype() == TEXT_TEXTLINE)) {
            // special case: vertically centered text with TextLine needs to
            // take into account the line width
            TextLineSegment* tls = (TextLineSegment*)parent();
            TextLine* tl = (TextLine*)(tls->line());
            qreal textlineLineWidth = point(tl->lineWidth());
            rypos() -= textlineLineWidth * .5;
            }

      if (parent() == 0)
            return;
      if (parent()->type() == SEGMENT) {
            Segment* s = static_cast<Segment*>(parent());
            rypos() += s ? s->measure()->system()->staff(staffIdx())->y() : 0.0;
            }
#endif
      Font f = style().font(spatium());
      qreal asc, desc, leading;
      qreal w = textMetrics(f.family(), _text, f.size(), &asc, &desc, &leading);

// printf("text(%s) asc %f desc %f leading %f  w %f\n", qPrintable(_text), asc, desc, leading, w);
      _lineHeight  = asc + desc;
      _lineSpacing = _lineHeight + leading;
      _baseLine    = asc;

      setbbox(QRectF(0.0, -asc, w, _lineHeight));
#if 0
      if (parent() && _layoutToParentWidth) {
            qreal wi = parent()->width();
            qreal ph = parent()->height();
            qreal x;
            qreal y = pos.y();
            if (align() & ALIGN_HCENTER)
                  x = (wi - w) * .5;
            else if (align() & ALIGN_RIGHT)
                  x = wi - w;
            else
                  x = 0.0;
            if (align() & ALIGN_VCENTER)
                  y = (ph - asc) * .5;
            else if (align() & ALIGN_BOTTOM)
                  y = ph - asc;
            else
                  y = asc;
//.........这里部分代码省略.........

int TextOption::setUseDesignMetrics( lua_State * L ) //  ( bool enable )void
{
	QTextOption* lhs = ValueInstaller2<QTextOption>::check( L, 1 );
	lhs->setUseDesignMetrics( Util::toBool( L, 2 ) );
	return 0;
}