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#include "informationbox.h"
#include "statscolors.h"
#include "statsview.h"
#include "zvalues.h"
#include <QFontMetrics>
static const int informationBorder = 2;
static const double informationBorderRadius = 4.0; // Radius of rounded corners
static const int distanceFromPointer = 10; // Distance to place box from mouse pointer or scatter item
InformationBox::InformationBox(StatsView &v) :
ChartRectItem(v, ChartZValue::InformationBox,
QPen(informationBorderColor, informationBorder),
QBrush(informationColor), informationBorderRadius),
width(0.0),
height(0.0)
{
}
void InformationBox::setText(const std::vector<QString> &text, QPointF pos)
{
QFontMetrics fm(font);
double fontHeight = fm.height();
std::vector<double> widths;
widths.reserve(text.size());
width = 0.0;
for (const QString &s: text) {
widths.push_back(static_cast<double>(fm.size(Qt::TextSingleLine, s).width()));
width = std::max(width, widths.back());
}
width += 4.0 * informationBorder;
height = widths.size() * fontHeight + 4.0 * informationBorder;
ChartRectItem::resize(QSizeF(width, height));
painter->setPen(QPen(darkLabelColor)); // QPainter uses QPen to set text color!
double y = 2.0 * informationBorder;
for (size_t i = 0; i < widths.size(); ++i) {
QRectF rect(2.0 * informationBorder, y, widths[i], fontHeight);
painter->drawText(rect, text[i]);
y += fontHeight;
}
}
void InformationBox::setPos(QPointF pos)
{
QSizeF size = sceneSize();
double x = pos.x() + distanceFromPointer;
if (x + width >= size.width()) {
if (pos.x() - width >= 0.0)
x = pos.x() - width;
else
x = pos.x() - width / 2.0;
}
double y = pos.y() + distanceFromPointer;
if (y + height >= size.height()) {
if (pos.y() - height >= 0.0)
y = pos.y() - height;
else
y = pos.y() - height / 2.0;
}
ChartRectItem::setPos(QPointF(x, y));
}
// Try to stay within three-thirds of the chart height
int InformationBox::recommendedMaxLines() const
{
QFontMetrics fm(font);
int maxHeight = static_cast<int>(sceneSize().height());
return maxHeight * 2 / fm.height() / 3;
}
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