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https://github.com/tumic0/GPXSee.git
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97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
#include <QPainter>
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#include "font.h"
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#include "sliderinfoitem.h"
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#define SIZE 5
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SliderInfoItem::SliderInfoItem(QGraphicsItem *parent) : QGraphicsItem(parent)
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{
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_side = Right;
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_color = Qt::red;
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_font.setPixelSize(FONT_SIZE);
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_font.setFamily(FONT_FAMILY);
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}
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void SliderInfoItem::updateBoundingRect()
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{
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QFontMetrics fm(_font);
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qreal width = qMax(fm.width(_x), fm.width(_y));
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qreal height = 2 * fm.height() - 2*fm.descent();
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_boundingRect = (_side == Right)
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? QRectF(-SIZE/2, -height/2, width + 1.5*SIZE, height)
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: QRectF(-(width + SIZE), -height/2, width + 1.5*SIZE, height);
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}
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void SliderInfoItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
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*option, QWidget *widget)
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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QFontMetrics fm(_font);
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QRectF rx, ry;
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qreal width = qMax(fm.width(_x), fm.width(_y));
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if (_side == Right) {
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ry = QRectF(SIZE, -fm.height() + fm.descent(), fm.width(_y),
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fm.height() - fm.descent());
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rx = QRectF(SIZE, 0, fm.width(_x), fm.height()
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- fm.descent());
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} else {
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ry = QRectF(-(width + SIZE), -fm.height() + fm.descent(), fm.width(_y),
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fm.height() - fm.descent());
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rx = QRectF(-(width + SIZE), 0, fm.width(_x), fm.height()
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- fm.descent());
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}
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painter->setPen(Qt::NoPen);
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QColor bc(painter->background().color());
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bc.setAlpha(196);
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painter->setBrush(QBrush(bc));
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painter->drawRect(ry);
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painter->drawRect(rx);
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painter->setBrush(Qt::NoBrush);
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painter->setFont(_font);
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painter->setRenderHint(QPainter::Antialiasing, false);
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painter->setPen(_color);
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if (_side == Right) {
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painter->drawText(SIZE, -fm.descent()/2, _y);
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painter->drawText(SIZE, fm.height() - fm.descent()*1.5, _x);
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} else {
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painter->drawText(-(width + SIZE), -fm.descent()/2, _y);
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painter->drawText(-(width + SIZE), fm.height() - fm.descent()*1.5, _x);
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}
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painter->drawLine(QPointF(-SIZE/2, 0), QPointF(SIZE/2, 0));
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//painter->drawRect(boundingRect());
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}
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void SliderInfoItem::setText(const QString &x, const QString &y)
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{
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prepareGeometryChange();
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_x = x; _y = y;
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updateBoundingRect();
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}
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void SliderInfoItem::setSide(Side side)
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{
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if (side == _side)
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return;
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prepareGeometryChange();
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_side = side;
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updateBoundingRect();
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}
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void SliderInfoItem::setColor(const QColor &color)
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{
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_color = color;
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update();
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}
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