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Some more text layout fiddeling

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This commit is contained in:
Martin Tůma 2019-10-02 22:57:11 +02:00
parent f5c15ece52
commit 044e95e061
3 changed files with 46 additions and 18 deletions
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42
src/text.cpp
View File

@ -31,22 +31,36 @@ void Text::addLabel(const QString &text, const QImage &icon,
{
TextItem *ti;
switch (_placement) {
case Line:
if (_alignment == Viewport)
if (_alignment == Viewport) {
QMap<qreal, int> map;
for (int j = 0; j < path.elementCount(); j++) {
QLineF l(path.elementAt(j), _sceneRect.center());
map.insert(l.length(), j);
}
QMap<qreal, int>::const_iterator jt = map.constBegin();
ti = new TextPointItem(text, path.elementAt(jt.value()), _font,
_maxWidth, _anchor, icon);
while (true) {
if (_sceneRect.contains(ti->boundingRect()))
break;
if (++jt == map.constEnd())
break;
static_cast<TextPointItem*>(ti)->setPos(path.elementAt(
jt.value()));
}
} else {
switch (_placement) {
case Line:
ti = new TextPathItem(text, path, _font, _maxAngle, _sceneRect);
break;
case LineCenter:
ti = new TextPointItem(text, path.pointAtPercent(0.5), _font,
_maxWidth, _anchor, icon);
break;
default:
ti = new TextPointItem(text, path.elementAt(0), _font,
_maxWidth, _anchor, icon);
else
ti = new TextPathItem(text, path, _font, _maxAngle, _sceneRect);
break;
case LineCenter:
ti = new TextPointItem(text, path.pointAtPercent(0.5), _font,
_maxWidth, _anchor, icon);
break;
default:
ti = new TextPointItem(text, path.elementAt(0), _font, _maxWidth,
_anchor, icon);
break;
}
}
// Note: empty path == point geometry (single move)

18
src/textpointitem.cpp
View File

@ -16,6 +16,8 @@ QRectF TextPointItem::exactBoundingRect() const
// Italic fonts overflow the computed bounding rect, so expand it
if (font().italic())
br.adjust(-font().pixelSize() / 2.0, 0, font().pixelSize() / 2.0, 0);
if (hasHalo())
br.adjust(-1, -1, 1, 1);
return br;
}
@ -119,9 +121,18 @@ TextPointItem::TextPointItem(const QString &text, const QPointF &pos,
_shape.addRect(_boundingRect);
}
void TextPointItem::setPos(const QPointF &pos)
{
QPointF d(_boundingRect.left() - _pos.x(), _boundingRect.top() - _pos.y());
_boundingRect.moveTopLeft(pos + d);
_shape = QPainterPath();
_shape.addRect(_boundingRect);
_pos = pos;
}
void TextPointItem::paint(QPainter *painter) const
{
QRectF textRect;
QRectF textRect(_boundingRect);
if (!_icon.isNull()) {
textRect = computeTextRect(true);
@ -133,10 +144,9 @@ void TextPointItem::paint(QPainter *painter) const
painter->drawImage(_pos - QPointF(_icon.width() / 2,
_icon.height() / 2), _icon);
#endif // ENABLE_HIDPI
} else
textRect = _boundingRect;
}
if (halo().color().isValid() && halo().width() > 0) {
if (hasHalo()) {
QRect ir(textRect.toRect());
QImage img(ir.size(), QImage::Format_ARGB32_Premultiplied);
img.fill(Qt::transparent);

4
src/textpointitem.h
View File

@ -15,10 +15,14 @@ public:
QPainterPath shape() const {return _shape;}
void paint(QPainter *painter) const;
void setPos(const QPointF &pos);
private:
QRectF exactBoundingRect() const;
QRectF fuzzyBoundingRect() const;
QRectF computeTextRect(bool exact) const;
bool hasHalo() const
{return halo().color().isValid() && halo().width() > 0;}
QPointF _pos;
QPainterPath _shape;