void QRangeControl::addPage()
{
if ( value() + pageStep() > value() )
setValue( value() + pageStep() );
else
setValue( maxValue() );
}
void RichHScrollBar::changePageStep(int p)
{
p = qMax(p, MinVisible);
p = qMin(p, maximum() - value() + pageStep());
if(p != pageStep())
{
setMaximum(maximum() + pageStep() - p);
setPageStep(p);
}
}
void RichHScrollBar::setTotalMaximum(int m)
{
int w = m - minimum();
if(pageStep() > w)
{
changePageStep(w);
m = minimum() + pageStep();
}
setMaximum(m - pageStep());
}
// Function copied from qslider.cpp and modified to make it compile
void Slider::initStyleOption_Qt430( QStyleOptionSlider *option ) const
{
if (!option)
return;
option->initFrom( this );
option->subControls = QStyle::SC_None;
option->activeSubControls = QStyle::SC_None;
option->orientation = orientation();
option->maximum = maximum();
option->minimum = minimum();
option->tickPosition = (QSlider::TickPosition) tickPosition();
option->tickInterval = tickInterval();
option->upsideDown = (orientation() == Qt::Horizontal) ?
(invertedAppearance() != (option->direction == Qt::RightToLeft))
: (!invertedAppearance());
option->direction = Qt::LeftToRight; // we use the upsideDown option instead
option->sliderPosition = sliderPosition();
option->sliderValue = value();
option->singleStep = singleStep();
option->pageStep = pageStep();
if (orientation() == Qt::Horizontal)
option->state |= QStyle::State_Horizontal;
}
void QDial::calcLines()
{
if ( !d->lines.size() ) {
double r = QMIN( width(), height() ) / 2.0;
int bigLineSize = calcBigLineSize();
double xc = width() / 2.0;
double yc = height() / 2.0;
int ns = notchSize();
int notches = ( maxValue() + ns - 1 - minValue() ) / ns;
d->lines.resize( 2 + 2 * notches );
int smallLineSize = bigLineSize / 2;
int i;
for( i = 0; i <= notches; i++ ) {
double angle = d->wrapping
? m_pi * 3 / 2 - i * 2 * m_pi / notches
: (m_pi * 8 - i * 10 * m_pi / notches) / 6;
double s = sin( angle ); // sin/cos aren't defined as const...
double c = cos( angle );
if ( i == 0 || ( ((ns * i ) % pageStep() ) == 0 ) ) {
d->lines[2*i] = QPoint( (int)( xc + ( r - bigLineSize ) * c ),
(int)( yc - ( r - bigLineSize ) * s ) );
d->lines[2*i+1] = QPoint( (int)( xc + r * c ),
(int)( yc - r * s ) );
} else {
d->lines[2*i] = QPoint( (int)( xc + ( r - 1 - smallLineSize ) * c ),
(int)( yc - ( r - 1 - smallLineSize ) * s ) );
d->lines[2*i+1] = QPoint( (int)( xc + ( r - 1 ) * c ),
(int)( yc -( r - 1 ) * s ) );
}
}
}
}
ScrollResultOneDimensional ScrollableArea::userScroll(ScrollDirectionPhysical direction, ScrollGranularity granularity, float delta)
{
ScrollbarOrientation orientation;
if (direction == ScrollUp || direction == ScrollDown)
orientation = VerticalScrollbar;
else
orientation = HorizontalScrollbar;
if (!userInputScrollable(orientation))
return ScrollResultOneDimensional(false, delta);
cancelProgrammaticScrollAnimation();
float step = 0;
switch (granularity) {
case ScrollByLine:
step = lineStep(orientation);
break;
case ScrollByPage:
step = pageStep(orientation);
break;
case ScrollByDocument:
step = documentStep(orientation);
break;
case ScrollByPixel:
case ScrollByPrecisePixel:
step = pixelStep(orientation);
break;
}
if (direction == ScrollUp || direction == ScrollLeft)
delta = -delta;
return scrollAnimator()->userScroll(orientation, granularity, step, delta);
}
/*!\reimp
*/
void QSlider::paintEvent( QPaintEvent * )
{
QPainter p( this );
const QRect & sliderR = sliderRect();
const QColorGroup & g = colorGroup();
int mid = thickness()/2;
if ( ticks & Above )
mid += style().sliderLength() / 8;
if ( ticks & Below )
mid -= style().sliderLength() / 8;
if ( orient == Horizontal ) {
style().drawSliderGroove(&p, 0, tickOffset, width(), thickness(),
g, mid, Horizontal );
// p.fillRect( 0, 0, width(), tickOffset, g.background() );
// p.fillRect( 0, tickOffset + thickness(),
// width(), height()/*###*/, g.background() );
erase( 0, 0, width(), tickOffset );
erase( 0, tickOffset + thickness(), width(), height() );
}
else {
style().drawSliderGroove( &p, tickOffset, 0, thickness(), height(),
g, mid, Vertical );
// p.fillRect( 0, 0, tickOffset, height(), g.background() );
// p.fillRect( tickOffset + thickness(), 0,
// width()/*###*/, height(), g.background() );
erase( 0, 0, tickOffset, height() );
erase( tickOffset + thickness(), 0, width()/*###*/, height() );
}
int interval = tickInt;
if ( interval <= 0 ) {
interval = lineStep();
if ( positionFromValue( interval ) - positionFromValue( 0 ) < 3 )
interval = pageStep();
}
if ( ticks & Above )
drawTicks( &p, g, 0, tickOffset - 2, interval );
if ( ticks & Below ) {
int avail = (orient == Horizontal) ? height() : width();
avail -= tickOffset + thickness();
drawTicks( &p, g, tickOffset + thickness() + 1, avail - 2, interval );
}
if ( hasFocus() ) {
QRect r;
if ( orient == Horizontal )
r.setRect( 0, tickOffset-1, width(), thickness()+2 );
else
r.setRect( tickOffset-1, 0, thickness()+2, height() );
r = r.intersect( rect() );
if (style() == MotifStyle)
style().drawFocusRect(&p, QRect(r.x()+1, r.y()+1, r.width()-2, r.height()-2), g);
else
style().drawFocusRect(&p, r, g);
}
paintSlider( &p, g, sliderR );
}
void Knob::wheelEvent ( QWheelEvent *pWheelEvent )
{
if (m_dialMode == QDialMode) {
QDial::wheelEvent(pWheelEvent);
} else {
int iValue = sliderPosition();
if (pWheelEvent->delta() > 0)
iValue -= pageStep();
else
iValue += pageStep();
if (iValue > maximum())
iValue = maximum();
else
if (iValue < minimum())
iValue = minimum();
updatePosition(iValue);
}
}
void Knob::wheelEvent ( QWheelEvent *pWheelEvent )
{
if (m_dialMode == QDialMode) {
QDial::wheelEvent(pWheelEvent);
} else {
int iValue = value();
if (pWheelEvent->delta() > 0)
iValue -= pageStep();
else
iValue += pageStep();
if (iValue > maximum())
iValue = maximum();
else
if (iValue < minimum())
iValue = minimum();
setValue(iValue);
}
}
void RichHScrollBar::sliderChange(SliderChange change)
{
updateLeftRight();
if (change == QAbstractSlider::SliderStepsChange)
{
emit pageStepChanged(pageStep());
}
update();
}
void ScrollBar::sliderRange(int value, double &min, double &max) const
{
if ( isInverted() )
value = d_baseTicks - value;
const int visibleTicks = pageStep();
min = mapFromTick(value - visibleTicks / 2);
max = mapFromTick(value + visibleTicks / 2);
}
void TickSlider::addDefaultTickLabels()
{
int interval = tickInterval();
if (interval == 0) {
interval = pageStep();
}
for (int i = minimum(); i <= maximum(); i += interval) {
m_tick_labels[i] = QString::number(i);
}
}
int QDial::notchSize() const
{
// radius of the arc
int r = QMIN( width(), height() )/2;
// length of the whole arc
int l = (int)(r*(d->wrapping ? 6 : 5)*m_pi/6);
// length of the arc from minValue() to minValue()+pageStep()
if ( maxValue() > minValue()+pageStep() )
l = (int)(0.5 + l * pageStep() / (maxValue()-minValue()));
// length of a lineStep() arc
l = l * lineStep() / pageStep();
if ( l < 1 )
l = 1;
// how many times lineStep can be draw in d->target pixels
l = (int)(0.5 + d->target / l);
// we want notchSize() to be a non-zero multiple of lineStep()
if ( !l )
l = 1;
return lineStep() * l;
}
void OverlayScrollBar::mouseReleaseEvent(QMouseEvent *event)
{
QRect pm_r(0, 0, packet_map_width_, height());
if (pm_r.contains(event->pos())) {
qreal map_ratio = qreal(end_pos_ - start_pos_) / geometry().height();
// Try to put the clicked packet near but not at the top.
setValue((event->pos().y() * map_ratio) + start_pos_ - (pageStep() / 4));
}
}
double RullerSlider::rullerScale() const
{
int length = maximum() + pageStep() - minimum();
double scale = double(length);
if (orientation() == Qt::Horizontal)
scale /= m_view->scene()->width();
else
scale /= m_view->scene()->height();
return scale;
}
/*!\reimp
*/
void QSlider::wheelEvent( QWheelEvent * e){
static float offset = 0;
static QSlider* offset_owner = 0;
if (offset_owner != this){
offset_owner = this;
offset = 0;
}
offset += -e->delta()*QMAX(pageStep(),lineStep())/120;
if (QABS(offset)<1)
return;
setValue( value() + int(offset) );
offset -= int(offset);
}
/*!
\reimp
*/
void KScrollBar::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (m_pressedValue == -1 || m_initialDelayTimer.isActive() || m_repeatActionTimer.isActive())
return;
QRect rect = subControlRect(QStyle::SC_ScrollBarGroove);
QPointF pos = event->pos();
QPointF downPos = event->buttonDownPos(Qt::LeftButton);
QPointF delta = event->pos() - event->buttonDownPos(Qt::LeftButton);
qreal range = maximum() - minimum();
if (orientation() == Qt::Vertical)
{
qreal scale = rect.height() / (range + pageStep());
setValue((delta.y() / scale) + m_pressedValue);
}
else
{
qreal scale = rect.width() / (range + pageStep());
setValue((delta.x() / scale) + m_pressedValue);
}
}
void ScrollBar::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
Q_D(ScrollBar);
QPainter painter(this);
painter.fillRect(rect(), palette().color(QPalette::Window));
int x, y, w, h;
rect().getRect(&x, &y, &w, &h);
QMargins margins(2, 2, 2, 2);
QBrush brush;
brush.setStyle(Qt::SolidPattern);
brush.setColor(backgroundColor());
painter.setBrush(brush);
painter.setPen(Qt::NoPen);
if (d->hideOnMouseOut) {
painter.setOpacity(d->machine->opacity());
}
painter.drawRect(rect().marginsRemoved(margins));
const qreal q = h / static_cast<qreal>(maximum() - minimum() + pageStep());
QRect handle = Qt::Horizontal == orientation()
? QRect(sliderPosition()*q, y, pageStep()*q, h)
: QRect(x, sliderPosition()*q, w, pageStep()*q);
brush.setColor(sliderColor());
painter.setBrush(brush);
painter.drawRect(handle.marginsRemoved(margins));
}
void AbstractSlider::keyPressEvent(QKeyEvent* ev)
{
double oval = _value;
switch (ev->key()) {
case Qt::Key_Home: _value = _minValue; break;
case Qt::Key_End: _value = _maxValue; break;
case Qt::Key_Up:
case Qt::Key_Left: _value += lineStep(); break;
case Qt::Key_Down:
case Qt::Key_Right: _value -= lineStep(); break;
case Qt::Key_PageDown: _value -= pageStep(); break;
case Qt::Key_PageUp: _value += pageStep(); break;
default:
break;
}
if (_value < _minValue)
_value = _minValue;
else if (_value > _maxValue)
_value = _maxValue;
if (oval != _value)
valueChange();
}
void RichHScrollBar::updateLeftRight()
{
int w = total();
if(w > 0)
{
_left = HBorder + (value() - minimum()) * useableWidth() / w;
_right = HBorder + (value() - minimum() + pageStep()) * useableWidth() / w;
}
else
{
_left = HBorder;
_right = width() - HBorder;
}
}
void
QvisOpacitySlider::wheelEvent(QWheelEvent * e)
{
static float offset = 0;
static QvisOpacitySlider* offset_owner = 0;
if(offset_owner != this)
{
offset_owner = this;
offset = 0;
}
offset += -e->delta()*qMax(pageStep(),singleStep())/120;
if(qAbs(offset)<1)
return;
setValue( value() + int(offset) );
offset -= int(offset);
}
void
QvisOpacitySlider::paintEvent(QPaintEvent *)
{
QPainter p(this);
int mid = thickness()/2 + sliderLength() / 8;
// Draw the gradient pixmap.
if(gradientImage == 0)
createGradientImage();
p.drawImage(0, tickOffset, *gradientImage);
// Draw the groove on which the slider slides.
drawSliderGroove(&p, 0, tickOffset, imageWidth(), thickness(), mid);
// Figure out the interval between the tick marks.
int interval = tickInt;
if(interval <= 0)
{
interval = singleStep();
if(positionFromValue(interval) - positionFromValue(0) < 3)
interval = pageStep();
}
// Draw the tick marks.
p.fillRect(0, 0, imageWidth(), tickOffset,
palette().brush(QPalette::Background));
p.fillRect(0, tickOffset + thickness(), imageWidth(), height(),
palette().brush(QPalette::Background));
drawTicks(&p, palette(), 0, tickOffset - 2, interval);
// Draw the slider
paintSlider(&p, palette(), sliderRect());
// Draw the value text.
paintValueText(&p, palette(), imageWidth(), height());
// If this widget has focus, draw the focus rectangle.
if(hasFocus())
{
QStyleOptionFocusRect so;
so.initFrom(this);
style()->drawPrimitive(QStyle::PE_FrameFocusRect,
&so,
&p);
}
}
int ScrollBar::extent() const
{
QStyleOptionSlider opt;
opt.init(this);
opt.subControls = QStyle::SC_None;
opt.activeSubControls = QStyle::SC_None;
opt.orientation = orientation();
opt.minimum = minimum();
opt.maximum = maximum();
opt.sliderPosition = sliderPosition();
opt.sliderValue = value();
opt.singleStep = singleStep();
opt.pageStep = pageStep();
opt.upsideDown = invertedAppearance();
if (orientation() == Qt::Horizontal)
opt.state |= QStyle::State_Horizontal;
return style()->pixelMetric(QStyle::PM_ScrollBarExtent, &opt, this);
}
/*!
Reimplementation of QWidget::updateMask(). Draws the mask of the
slider when transparency is required.
\sa QWidget::setAutoMask()
*/
void QSlider::updateMask()
{
QBitmap bm( size() );
bm.fill( color0 );
{
QPainter p( &bm, this );
QRect sliderR = sliderRect();
QColorGroup g(color1, color1, color1, color1, color1, color1, color1, color1, color0);
int mid = tickOffset + thickness()/2;
if ( ticks & Above )
mid += style().sliderLength() / 8;
if ( ticks & Below )
mid -= style().sliderLength() / 8;
if ( orient == Horizontal ) {
style().drawSliderGrooveMask(&p, 0, tickOffset, width(), thickness(),
mid, Horizontal );
}
else {
style().drawSliderGrooveMask( &p, tickOffset, 0, thickness(), height(),
mid, Vertical );
}
style().drawSliderMask( &p, sliderR.x(), sliderR.y(),
sliderR.width(), sliderR.height(),
orient, ticks & Above, ticks & Below );
int interval = tickInt;
if ( interval <= 0 ) {
interval = lineStep();
if ( positionFromValue( interval ) - positionFromValue( 0 ) < 3 )
interval = pageStep();
}
if ( ticks & Above )
drawTicks( &p, g, 0, tickOffset - 2, interval );
if ( ticks & Below ) {
int avail = (orient == Horizontal) ? height() : width();
avail -= tickOffset + thickness();
drawTicks( &p, g, tickOffset + thickness() + 1, avail - 2, interval );
}
}
setMask( bm );
}
void RullerSlider::paintEvent(QPaintEvent* event)
{
Q_UNUSED(event);
QPainter painter(this);
QColor backgroundColor(245, 245, 200);
QBrush backgroundBrush(backgroundColor);
QPen backgroundPen(backgroundColor);
QPen mainTickPen(Qt::black);
QPen secondTickPen(Qt::lightGray);
double scale = rullerScale();
double spacing = (orientation() == Qt::Horizontal ? 0.01 : 0.00005);
int lastStep = int(double(value() + pageStep())/(scale*spacing)) + 1;
int firstStep = int(double(value())/(scale*spacing)) - 1;
painter.setBrush(backgroundBrush);
painter.setPen(backgroundPen);
painter.drawRect(rect());
painter.setPen(secondTickPen);
for (double x = double(lastStep)*spacing; x >= double(firstStep)*spacing; x -= spacing)
{
double pos = x*scale - double(value());
drawGraduation(painter, pos, 0.4);
if (abs((int(round(x/spacing)) % 10)) == 5)
drawGraduation(painter, pos, 0.65);
else if ((int(round(x/spacing)) % 10) == 0)
{
painter.setPen(mainTickPen);
drawGraduation(painter, pos, 0.8);
QString text;
text.setNum(round(x*1000.));
QRectF textRect(0., 0., 0., 0.);
textRect.moveCenter(QPointF(pos + 2., height()/2.));
textRect = painter.boundingRect(textRect, Qt::AlignLeft | Qt::AlignVCenter, text);
painter.drawText(textRect, Qt::AlignCenter, text);
painter.setPen(secondTickPen);
}
}
}
void Dial::keyPressEvent(QKeyEvent* _event) {
if (((_event->key() == Qt::Key_Enter) ||
(_event->key() == Qt::Key_Return)))
{
setEditorVisible(!editor()->hasFocus());
}
float _step = singleStep();
if (_event->modifiers() & Qt::ShiftModifier) {
_step = 1.0;
}
if (_event->modifiers() & Qt::ControlModifier) {
_step = pageStep();
}
if (_event->key() == Qt::Key_Left) {
setValue(value() - _step);
}
if (_event->key() == Qt::Key_Right) {
setValue(value() + _step);
}
}
void VanishingScrollBar::mouseMoveEvent(QMouseEvent *event)
{
if (_isDragged)
{
int validLen;
if (orientation() == Qt::Horizontal)
validLen = geometry().width() - 2 * barMargin();
else
validLen = geometry().height() - 2 * barMargin();
auto diff = double(scrollPos(event->pos(), orientation()) - _dragStartPos) / double(validLen);
auto value = _dragStartValue + diff * (maximum() - minimum() + pageStep());
setValue(value);
emit sliderMoved(value);
event->accept();
}
else
{
event->ignore();
}
}
void VanishingScrollBar::paintEvent(QPaintEvent *)
{
if (!_isAwake)
return;
QPainter painter(this);
double begin, end;
std::tie(begin, end) = scrollBarBeginEndPos(value(), minimum(), maximum(), pageStep());
_barRect = scrollBarRect(begin, end, rect(), barMargin(), orientation());
auto path = scrollBarPath(_barRect);
//auto outerPath = scrollBarPath(_barRect.adjusted(-1,-1,1,1), orientation());
//auto stroke = path.subtracted(outerPath);
painter.setRenderHint(QPainter::Antialiasing, true);
painter.setPen(Qt::NoPen);
painter.setBrush(Qt::black);
painter.setOpacity(0.5 * _barOpacity);
painter.drawPath(path);
//painter.setPen(Qt::white);
//painter.drawPath(stroke);
}
void ManuallyTaggerWindow::scrollBottom() {
auto vert = ui->scrollArea->verticalScrollBar();
vert->setValue(int(vert->value() + vert->pageStep()/8));
}
void QRangeControl::subtractPage()
{
if ( value() - pageStep() < value() )
setValue( value() - pageStep() );
else
setValue( minValue() );
}
