本文整理汇总了C++中QLine函数的典型用法代码示例。如果您正苦于以下问题：C++ QLine函数的具体用法？C++ QLine怎么用？C++ QLine使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了QLine函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: penline
// No hardcoding test!!!
void SidarTestPaint1::sidarPaint(const SidarLabel &pSidar)
{
QPen penline(QColor(70, 255, 0));
QPen pentext(QColor(0, 167, 255));
QSize Sidar_size = pSidar.size();
QPainter pnt((QPaintDevice*)&pSidar);
pnt.setPen(penline);
QString s("WRAPPED");
QFont fnt(pSidar.font());
QFontMetrics fm(fnt);
int pixW = fm.width(s);
int pixH = fm.height(); // unused for now
pnt.save();
int texBegin = (Sidar_size.width()/2) - pixW/2;
int texEnd = (Sidar_size.width()/2) + pixW/2;
int drawHeight = Sidar_size.height()/2;
pnt.drawLine(QLine(0, drawHeight, texBegin, drawHeight));
pnt.setPen(pentext);
pnt.drawText(texBegin, drawHeight+(pixH/3), s);
pnt.setPen(penline);
pnt.drawLine(QLine(texEnd, drawHeight, Sidar_size.width(), drawHeight));
pnt.restore();
}示例2: fontMetrics
void UBGraphicsRuler::paintGraduations(QPainter *painter)
{
painter->save();
painter->setFont(font());
QFontMetricsF fontMetrics(painter->font());
for (int millimeters = 0; millimeters < (rect().width() - sLeftEdgeMargin - sRoundingRadius) / sPixelsPerMillimeter; millimeters++)
{
int graduationX = rotationCenter().x() + sPixelsPerMillimeter * millimeters;
int graduationHeight = (0 == millimeters % UBGeometryUtils::millimetersPerCentimeter) ?
UBGeometryUtils::centimeterGraduationHeight :
((0 == millimeters % UBGeometryUtils::millimetersPerHalfCentimeter) ?
UBGeometryUtils::halfCentimeterGraduationHeight : UBGeometryUtils::millimeterGraduationHeight);
painter->drawLine(QLine(graduationX, rotationCenter().y(), graduationX, rotationCenter().y() + graduationHeight));
painter->drawLine(QLine(graduationX, rotationCenter().y() + rect().height(), graduationX, rotationCenter().y() + rect().height() - graduationHeight));
if (0 == millimeters % UBGeometryUtils::millimetersPerCentimeter)
{
QString text = QString("%1").arg((int)(millimeters / UBGeometryUtils::millimetersPerCentimeter));
if (graduationX + fontMetrics.width(text) / 2 < rect().right())
{
qreal textWidth = fontMetrics.width(text);
qreal textHeight = fontMetrics.tightBoundingRect(text).height() + 5;
painter->drawText(
QRectF(graduationX - textWidth / 2, rect().top() + 5 + UBGeometryUtils::centimeterGraduationHeight, textWidth, textHeight),
Qt::AlignVCenter, text);
painter->drawText(
QRectF(graduationX - textWidth / 2, rect().bottom() - 5 - UBGeometryUtils::centimeterGraduationHeight - textHeight, textWidth, textHeight),
Qt::AlignVCenter, text);
}
}
}
painter->restore();
}示例3: QPen
void CRFTagRobot::drawPath(){
//Flecha superior
QVector<QPoint> arrow0;
arrow0.append(QPoint(190, 10)); //punto sobre la recta
arrow0.append(QPoint(200, 5)); //punto arriba de la recta
arrow0.append(QPoint(200, 15)); //punto debajo de la recta
//Flecha inferior
QVector<QPoint> arrow1;
arrow1.append(QPoint(190, 400)); //punto sobre la recta
arrow1.append(QPoint(200, 395)); //punto arriba de la recta
arrow1.append(QPoint(200, 405)); //punto debajo de la recta
//Flecha diagonal 1
QVector<QPoint> arrow2;
arrow2.append(QPoint(170, 175)); //punto sobre de la recta
arrow2.append(QPoint(170, 165)); //punto arriba de la recta
arrow2.append(QPoint(160, 175)); //punto debajo de la recta
//Flecha diagonal 2
QVector<QPoint> arrow3;
arrow3.append(QPoint(230, 175));
arrow3.append(QPoint(220, 175));
arrow3.append(QPoint(230, 185));
this->scene.addPolygon(QPolygon(arrow0), QPen(), QBrush(QColor("black")));
this->scene.addPolygon(QPolygon(arrow1), QPen(), QBrush(QColor("black")));
this->scene.addPolygon(QPolygon(arrow2), QPen(), QBrush(QColor("black")));
this->scene.addPolygon(QPolygon(arrow3), QPen(), QBrush(QColor("black")));
this->scene.addLine(QLine(QPoint(0, 10), QPoint(400, 400)),QPen(QColor("black")));
this->scene.addLine(QLine(QPoint(0, 400), QPoint(400, 10)),QPen(QColor("black")));
this->scene.addLine(QLine(QPoint(0, 10), QPoint(400, 10)),QPen(QColor("black")));
this->scene.addLine(QLine(QPoint(0, 400), QPoint(400, 400)),QPen(QColor("black")));
}示例4: painter
void QZoomLabel::paintEvent( QPaintEvent * event)
{
QLabel::paintEvent(event);
QPainter painter(this);
// frame
painter.setPen(QPen(QColor(237,237,230),1));
painter.drawLine(QLine(0,0,width(),0));
painter.drawLine(QLine(0,height()-1,width(),height()-1));
painter.drawLine(QLine(0,0,0,height()));
painter.drawLine(QLine(width()-1,0,width()-1,height()));
// enable anti-aliasing
painter.setRenderHint(QPainter::Antialiasing);
painter.setPen(QPen(QColor(0,0,0),1)); // black
QLineF line_down_1(40.0f, 9.0f, 44.0f, 12.0f);
QLineF line_up_1 (44.0f, 12.0f, 48.0f, 9.0f);
QLineF line_down_2(40.0f, 6.0f, 44.0f, 3.0f);
QLineF line_up_2 (44.0f, 3.0f, 48.0f, 6.0f);
// draw down-arrow
painter.drawLine(line_down_1);
painter.drawLine(line_up_1);
// draw up-arrow
painter.drawLine(line_down_2);
painter.drawLine(line_up_2);
}示例5: switch
int BC_GEN::insertbuf(const QChar & bc)
{
for(int index=0;index<(CODE39_SIZE+1);++index){//include '*'
if(bc.toUpper().toLatin1()==code39_table[index]){//found char
global_Xposition+=INTER_GAP_LEN;//char gap
for(int i=0;i<CODE39_CODE_LEN;++i){
switch(code39_code_table[index][i]){
case 'B':
for(int j=0;j<WIDE_BAR_LEN_R3;++j){
encode_buf->append(QLine(global_Xposition,global_Yposition,global_Xposition,global_Yposition+global_height));
global_Xposition+=1;}
break;
case 'b':
for(int j=0;j<NARROW_BAR_LEN;++j){
encode_buf->append(QLine(global_Xposition,global_Yposition,global_Xposition,global_Yposition+global_height));
global_Xposition+=1;}
break;
case 'W':
global_Xposition+=WIDE_BAR_LEN_R3;
break;
case 'w':
global_Xposition+=NARROW_BAR_LEN;
break;
default:
return -2;//code error
}
}
chksum+=index;
return 1;//insert successful
}
}
return -3;//not found char
}示例6: LOG_DEBUG
void TraceGraphView::drawGrid(QPainter *painter,
const QRectF &rect) {
// draw lines
QPointF start = rect.topLeft().toPoint();
QPointF end = rect.bottomRight().toPoint();
LOG_DEBUG("Draw grid!");
LOG_DEBUG(rect.topLeft().x() << " , " << rect.topLeft().y());
LOG_DEBUG(rect.bottomRight().x() << " , " << rect.bottomRight().y());
LOG_DEBUG(start.x() << " , " << start.y());
LOG_DEBUG(end.x() << " , " << end.y());
// draw vertical grid
for (int i = start.x();
i < end.x();
++i) {
if (i % m_gridSpacing == 0) {
painter->drawLine(QLine(QPoint(i, rect.top()),
QPoint(i, rect.bottom())));
i+= m_gridSpacing - 2;
}
}
// draw horizontal grid
for (int i = start.y();
i < end.y();
++i) {
if (i % m_gridSpacing == 0) {
painter->drawLine(QLine(QPoint(rect.left(), i),
QPoint(rect.right(), i)));
i+= m_gridSpacing - 2;
}
}
}示例7: center
void GameWidget::newTurn(Turn turn) {
QPoint center(turn.pos.x_cor * cell_size, turn.pos.y_cor * cell_size);
center.rx() = (center.x() / cell_size) * cell_size + cell_size / 2;
center.ry() = (center.y() / cell_size) * cell_size + cell_size / 2;
qDebug() << center.rx() << " " << center.ry();
if (turn.side == TICK_SIDE) {
ticks.push_back(QLine(center.x() - cell_size / 2 + TIC_TOE_SMALL_COEF,
center.y() - cell_size / 2 + TIC_TOE_SMALL_COEF,
center.x() + cell_size / 2 - TIC_TOE_SMALL_COEF,
center.y() + cell_size / 2 - TIC_TOE_SMALL_COEF));
ticks.push_back(QLine(center.x() + cell_size / 2 - TIC_TOE_SMALL_COEF,
center.y() - cell_size / 2 + TIC_TOE_SMALL_COEF,
center.x() - cell_size / 2 + TIC_TOE_SMALL_COEF,
center.y() + cell_size / 2 - TIC_TOE_SMALL_COEF));
} else {
toes.push_back(QRect(QPoint(center.x() - cell_size / 2 + TIC_TOE_SMALL_COEF,
center.y() - cell_size / 2 + TIC_TOE_SMALL_COEF),
QPoint(center.x() + cell_size / 2 - TIC_TOE_SMALL_COEF,
center.y() + cell_size / 2 - TIC_TOE_SMALL_COEF)));
}
repaint();
}示例8: p
void BurgerWidget::paintEvent(QPaintEvent *e)
{
QPainter p(this);
QImage pix(QSize(burger_width * 2, burger_height * 2), QImage::Format_ARGB32);
QPainter painter(&pix);
p.setRenderHint(QPainter::Antialiasing);
p.setRenderHint(QPainter::TextAntialiasing);
painter.setRenderHint(QPainter::Antialiasing);
QPen pen(QColor(ql1s("#454545")));
pen.setWidth(4);
pen.setCapStyle(Qt::RoundCap);
painter.setPen(pen);
pix.fill(Qt::transparent);
const static std::array<QLine, 3> lines =
{
QLine(QPoint(2, 6), QPoint(44, 6)),
QLine(QPoint(2, 20), QPoint(44, 20)),
QLine(QPoint(2, 34), QPoint(44, 34))
};
painter.drawLines(lines.data(), lines.size());
painter.end();
Utils::check_pixel_ratio(pix);
if (Utils::is_mac_retina())
pix = pix.scaled(QSize(width() * 2, height() * 2), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
else
pix = pix.scaled(size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
p.fillRect(rect(), CommonStyle::getFrameColor());
p.drawImage(0, 0, pix);
}示例9: QImage
QImage Rotater::HideRollOutCorners(const QImage image)
{
QImage destImage = QImage( image);
QLine hline, vlineR, vlineL;
int x0, y0, x1, y1;
if (m_sign < 0)
{
x0 = 0, y0 = 0, x1 = m_width, y1 = 0;
}
else
{
x0 = 0, y0 = m_height, x1 = m_width, y1 = m_height;
}
hline = QLine(x0, y0, x1, y1);
vlineR = QLine(m_width, 0, m_width, m_height);
vlineL = QLine(0, 0, 0, m_height);
QLine rvline = m_transform.map(vlineR);
QPoint pa = get_line_cross_point(hline, rvline);
QPoint pb = get_line_cross_point(vlineR, rvline);
QLine rhline = m_transform.map(hline);
QPoint pc = get_line_cross_point(vlineL, rhline);
QPoint pd = get_line_cross_point(hline, rhline);
// destImage = markOnImage( image, pa.x(), pa.y(), MarkType::CrossLines);
// destImage = markOnImage( destImage, pb.x(), pb.y(), MarkType::CrossLines);
// destImage = markOnImage( destImage, pc.x(), pc.y(), MarkType::CrossLines);
// destImage = markOnImage( destImage, pd.x(), pd.y(), MarkType::CrossLines);
QPolygonF triagle1, triagle2;
triagle1 << pa << pb << QPointF(x1, y1);
triagle2 << pc << pd << QPointF(x0, y0);
QPainterPath myPath;
myPath.addPolygon(triagle1);
myPath.addPolygon(triagle2);
QTransform transform;
transform.translate(0, m_height * 0.5);
transform.rotate(180, Qt::XAxis);
transform.translate(0, -m_height * 0.5);
QPainterPath myPath1 = transform.map(myPath);
transform.reset();
transform.translate(m_width * 0.5, 0);
transform.rotate(180, Qt::YAxis);
transform.translate(-m_width * 0.5, 0);
myPath = transform.map(myPath);
myPath.addPath(myPath1);
QPainter painter(&destImage);
painter.setBrush(Qt::SolidPattern);
painter.drawPath(myPath);
return destImage;
}示例10: paint
void paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
static const QLine lines[] = {
QLine(-8,0, 8,0),
QLine(0,-8, 0,8),
};
painter->setPen(QPen(Qt::DashLine));
painter->drawLines(lines, sizeof(lines) / sizeof(lines[0]));
}示例11: drawH
void Canvas::drawH(int x, int y, int size) {
int x0 = x - size / 2;
int x1 = x + size / 2;
int y0 = y - size / 2;
int y1 = y + size / 2;
lines.push_back(QLine(x0, y0, x0, y1));
lines.push_back(QLine(x1, y0, x1, y1));
lines.push_back(QLine(x0, y, x1, y));
}示例12: Q_UNUSED
void ControlsOverlay::paintEvent(QPaintEvent *event) {
Q_UNUSED(event)
QPainter painter(this);
painter.fillRect(QRect(0,0,60,20),QBrush(QColor(0,0,0,60),Qt::SolidPattern));
painter.setPen(pen);
painter.drawLine(QLine(4,15,15,15)); //minimize
painter.drawRect(QRect(24,10,10,5)); //square
painter.drawLine(QLine(44,4,54,14)); //cross 1
painter.drawLine(QLine(44,15,54,5)); //cross 2
}示例13: pointToLineDistance
/*!
* \param[in] aPos point to insert into the polygon
* \param[in] aPoly polygon
*/
int
ImageHolder::posInPolygon(QPoint *aPos, QPolygon *aPoly) const
{
if (!aPos || !aPoly || aPoly->count() < 2 || aPos->isNull()) {
return -1;
/* NOTREACHED */
}
int x = aPos->x();
int y = aPos->y();
int index = 0;
int dist = 100000;
int temp = 0;
int count = aPoly->count();
QRect rect;
for (int i = 0; i < count - 1; i++) {
temp = pointToLineDistance(
QLine(aPoly->at(i), aPoly->at(i + 1)),
*aPos
);
rect.setTopLeft(aPoly->at(i));
rect.setBottomRight(aPoly->at(i + 1));
rect = rect.normalized();
if (temp < dist &&
((x < rect.right() && rect.left() < x) ||
(y < rect.bottom() && rect.top() < y)))
{
dist = temp;
index = i + 1;
}
}
/* first and last points */
temp = pointToLineDistance(
QLine(aPoly->at(0), aPoly->at(count - 1)),
*aPos
);
rect.setTopLeft(aPoly->at(0));
rect.setBottomRight(aPoly->at(count - 1));
rect = rect.normalized();
if (temp < dist &&
((x < rect.right() && rect.left() < x) ||
(y < rect.bottom() && rect.top() < y)))
{
index = 0;
}
return index;
}示例14: QLine
void OriginIndicator::paint(QPainter *painter,
const QStyleOptionGraphicsItem *,
QWidget *)
{
static const QLine lines[] = {
QLine(-8,0, 8,0),
QLine(0,-8, 0,8),
};
painter->setPen(QPen(mUnderMouse ? Qt::white : Qt::lightGray, 1, Qt::DashLine));
painter->drawLines(lines, sizeof(lines) / sizeof(lines[0]));
painter->translate(1, 1);
painter->setPen(QPen(Qt::black, 1, Qt::DashLine));
painter->drawLines(lines, sizeof(lines) / sizeof(lines[0]));
}示例15: drawFoldIcon
/*!
\code
QPalette p = QApplication::palette();
QPalette p2 = p;
p2.setColor(QPalette::Highlight,p2.color(QPalette::Highlight).lighter());
headerButtonFold = drawFoldIcon(p, true);
headerButtonFoldOver = drawFoldIcon(p2, true);
headerButtonUnfold = drawFoldIcon(p, false);
headerButtonUnfoldOver = drawFoldIcon(p2, false);
\endcode
*/
QPixmap SystemPanelScheme::drawFoldIcon(const QPalette& p, bool fold) const
{
QImage img(17,17,QImage::Format_ARGB32_Premultiplied);
img.fill(0x00000000);
QPainter painter;
painter.begin(&img);
painter.setBrush(p.window());
painter.drawEllipse(2,2,13,13);
painter.setPen(p.color(QPalette::Base));
painter.drawEllipse(2,2,13,13);
painter.setPen(p.color(QPalette::Highlight));
painter.drawLine(QLine(5,7,8,4));
painter.drawLine(QLine(6,7,8,5));
painter.drawLine(QLine(8,4,11,7));
painter.drawLine(QLine(8,5,10,7));
painter.drawLine(QLine(5,11,8,8));
painter.drawLine(QLine(6,11,8,9));
painter.drawLine(QLine(8,8,11,11));
painter.drawLine(QLine(9,8,10,11));
painter.end();
if (!fold) {
QTransform mat;
mat.rotate(180.0);
img = img.transformed(mat);
}
return QPixmap::fromImage(img);
}