void
GraphColumn::DrawField(BField* field, BRect rect, BView* parent)
{
int number = ((BIntegerField*)field)->Value();
if (number > 100)
number = 100;
else if (number < 0)
number = 0;
BRect graphRect(rect);
graphRect.InsetBy(5, 3);
parent->StrokeRect(graphRect);
if (number > 0) {
graphRect.InsetBy(1, 1);
float val = graphRect.Width() * (float) number / 100;
graphRect.right = graphRect.left + val;
parent->SetHighColor(0, 0, 190);
parent->FillRect(graphRect);
}
parent->SetDrawingMode(B_OP_INVERT);
parent->SetHighColor(128, 128, 128);
char numstr[256];
sprintf(numstr, "%d%%", number);
float width = be_plain_font->StringWidth(numstr);
parent->MovePenTo(rect.left + rect.Width() / 2 - width / 2, rect.bottom - FontHeight());
parent->DrawString(numstr);
}
// Move relative graph use point p as a vector
void AppWindow::MoveGraphRect(BPoint p) {
float delta;
BRect rect = view->Bounds(),
graphRect(view->graph->GetRect());
if ((p.x == 0) && (p.y == 0)) return;
delta = (graphRect.right-graphRect.left) * p.x / (rect.right-rect.left);
graphRect.right += delta; graphRect.left += delta;
delta = (graphRect.bottom-graphRect.top) * p.y / (rect.bottom-rect.top);
graphRect.top += delta; graphRect.bottom += delta;
UpdateGraphRect(graphRect);
view->Invalidate();
}
// Zoom in or out
void AppWindow::Zoom(float factor) {
double m, d;
BRect graphRect(view->graph->GetRect());
d = factor * (graphRect.bottom - graphRect.top) / 2.0;
m = (graphRect.bottom + graphRect.top) / 2.0;
graphRect.bottom = m + d; graphRect.top = m - d;
d = factor * (graphRect.right - graphRect.left) / 2.0;
m = (graphRect.right + graphRect.left) / 2.0;
graphRect.left = m - d; graphRect.right = m + d;
UpdateGraphRect(graphRect);
view->Invalidate();
}
void CIndicator::drawGraph(QPainter *painter)
{
painter->save();
painter->setPen(QPen(Qt::transparent,INDICATOR_PEN_WIDTH));
QLinearGradient graphGradient(m_rectTopLeft,QPointF(m_rectTopLeft.x(),m_rectBottomRight.y()));
graphGradient.setColorAt(0.0,forecolor);
painter->setBrush(graphGradient);
qreal dY=(qreal)(m_rectTopLeft.y()-m_rectBottomRight.y())/100;
qreal yValue=dY*m_currValue;
QPointF topLeftPot(m_rectTopLeft.x()+INDICATOR_PEN_WIDTH,m_rectBottomRight.y()+yValue);
QPointF bottomRightPot(m_rectBottomRight.x()-INDICATOR_PEN_WIDTH,m_rectBottomRight.y());
QRectF graphRect(topLeftPot,bottomRightPot);
painter->drawRect(graphRect);
QString strCurrValue;
strCurrValue=tr("%1").arg((m_currValue));
if(m_currValue<10)
{
lcd[0]->setValue(0);
lcd[1]->setValue(0);
lcd[2]->setValue(m_currValue);
}
else if(m_currValue < 100 && m_currValue >= 10)
{
lcd[0]->setValue(0);
lcd[1]->setValue(strCurrValue.at(0).digitValue());
lcd[2]->setValue(strCurrValue.at(1).digitValue());
}
else
{
lcd[0]->setValue(1);
lcd[1]->setValue(0);
lcd[2]->setValue(0);
}
painter->restore();
}
void CThermoMeterItem::drawGraph(QPainter *painter)
{
painter->save();
qreal bucketHeight=m_bucketRect.height();
qreal increment=(qreal)bucketHeight/100;
QPointF bottomRightPot(m_bucketRect.bottomRight());
qreal currentY=m_currentValue*increment;
QPointF topLeftPot(m_bucketRect.topLeft().x(),m_bucketRect.bottomLeft().y()-currentY);
QRectF graphRect(topLeftPot,bottomRightPot);
painter->setPen(Qt::NoPen);
QLinearGradient graphGradient(graphRect.topLeft(),graphRect.topRight());
painter->setOpacity(0.7);
graphGradient.setColorAt(0.0,this->graphcolor);
painter->setBrush(graphGradient);
painter->drawRect(graphRect);
painter->restore();
}