void Context2D::setShadowOffsetX(qreal x)
{
if (m_state.shadowOffsetX == x)
return;
m_state.shadowOffsetX = x;
updateShadowBuffer();
if (m_painter.device() == &m_shadowbuffer && m_state.shadowBlur>0)
endPainting();
m_state.flags |= DirtyShadowOffsetX;
}
void Context2D::setShadowBlur(qreal b)
{
if (m_state.shadowBlur == b)
return;
m_state.shadowBlur = b;
updateShadowBuffer();
if (m_painter.device() == &m_shadowbuffer && m_state.shadowBlur>0)
endPainting();
m_state.flags |= DirtyShadowBlur;
}
void Context2D::beginPainting()
{
if (m_width <= 0 || m_height <=0)
return;
if (m_pixmap.width() != m_width || m_pixmap.height() != m_height) {
if (m_painter.isActive())
m_painter.end();
m_pixmap = QPixmap(m_width, m_height);
m_pixmap.fill(parent()->property("color").value<QColor>());
}
if (m_state.shadowBlur > 0 && m_painter.device() != &m_shadowbuffer) {
if (m_painter.isActive())
m_painter.end();
updateShadowBuffer();
m_painter.begin(&m_shadowbuffer);
m_painter.setViewport(m_state.shadowOffsetX,
m_state.shadowOffsetY,
m_shadowbuffer.width(),
m_shadowbuffer.height());
m_shadowbuffer.fill(Qt::transparent);
}
if (!m_painter.isActive()) {
m_painter.begin(&m_pixmap);
m_painter.setRenderHint(QPainter::Antialiasing);
if (!m_state.clipPath.isEmpty())
m_painter.setClipPath(m_state.clipPath);
m_painter.setBrush(m_state.fillStyle);
m_painter.setOpacity(m_state.globalAlpha);
QPen pen;
pen.setBrush(m_state.strokeStyle);
if (pen.style() == Qt::NoPen)
pen.setStyle(Qt::SolidLine);
pen.setCapStyle(m_state.lineCap);
pen.setJoinStyle(m_state.lineJoin);
pen.setWidthF(m_state.lineWidth);
pen.setMiterLimit(m_state.miterLimit);
m_painter.setPen(pen);
} else {
setupPainter();
m_state.flags = 0;
}
}
