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author | Berthold Stoeger <bstoeger@mail.tuwien.ac.at> | 2021-01-13 15:17:54 +0100 |
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committer | bstoeger <32835590+bstoeger@users.noreply.github.com> | 2021-01-20 08:47:18 +0100 |
commit | 785d5189f617bab7d5dde668563fc4889e46f695 (patch) | |
tree | 67a3d41998725d77aadc98c1d57de4a0c7f459d8 /stats/informationbox.cpp | |
parent | d7878dad36e176ef0e2e1c54db891e115d29b489 (diff) | |
download | subsurface-785d5189f617bab7d5dde668563fc4889e46f695.tar.gz |
statistics: turn infobox into a QSGNode
A small step in converting from QGraphicsScene to QQuickItem.
This is the second item to be converted (after the legend)
and for now items are drawn in order of creation, which means
that the infobox is on top of the legend. This will have
to be made deterministic in follow-up commits.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Diffstat (limited to 'stats/informationbox.cpp')
-rw-r--r-- | stats/informationbox.cpp | 65 |
1 files changed, 28 insertions, 37 deletions
diff --git a/stats/informationbox.cpp b/stats/informationbox.cpp index 189fd1ab1..c768b77b3 100644 --- a/stats/informationbox.cpp +++ b/stats/informationbox.cpp @@ -1,9 +1,9 @@ #include "informationbox.h" #include "statscolors.h" +#include "statsview.h" #include "zvalues.h" #include <QFontMetrics> -#include <QGraphicsScene> static const QColor informationBorderColor(Qt::black); static const QColor informationColor(0xff, 0xff, 0x00, 192); // Note: fourth argument is opacity @@ -11,74 +11,65 @@ 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() : RoundRectItem(informationBorderRadius, nullptr) +InformationBox::InformationBox(StatsView &v) : + ChartRectItem(v, QPen(informationBorderColor, informationBorder), + QBrush(informationColor), informationBorderRadius) { - setPen(QPen(informationBorderColor, informationBorder)); - setBrush(informationColor); - setZValue(ZValues::informationBox); } void InformationBox::setText(const std::vector<QString> &text, QPointF pos) { - width = height = 0.0; - textItems.clear(); + QFontMetrics fm(font); + double fontHeight = fm.height(); + std::vector<double> widths; + widths.reserve(text.size()); + width = 0.0; for (const QString &s: text) { - if (!s.isEmpty()) - addLine(s); + widths.push_back(static_cast<double>(fm.size(Qt::TextSingleLine, s).width())); + width = std::max(width, widths.back()); } width += 4.0 * informationBorder; - height += 4.0 * informationBorder; + height = widths.size() * fontHeight + 4.0 * informationBorder; + + ChartRectItem::resize(QSizeF(width, height)); - // Setting the position will also set the proper size - setPos(pos); + 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) { - QRectF plotArea = scene()->sceneRect(); + QSizeF size = sceneSize(); double x = pos.x() + distanceFromPointer; - if (x + width >= plotArea.right()) { - if (pos.x() - width >= plotArea.x()) + 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 >= plotArea.bottom()) { - if (pos.y() - height >= plotArea.y()) + if (y + height >= size.height()) { + if (pos.y() - height >= 0.0) y = pos.y() - height; else y = pos.y() - height / 2.0; } - setRect(x, y, width, height); - double actY = y + 2.0 * informationBorder; - for (auto &item: textItems) { - item->setPos(QPointF(x + 2.0 * informationBorder, actY)); - actY += item->boundingRect().height(); - } -} - -void InformationBox::addLine(const QString &s) -{ - textItems.emplace_back(new QGraphicsSimpleTextItem(s, this)); - QGraphicsSimpleTextItem &item = *textItems.back(); - item.setBrush(QBrush(darkLabelColor)); - item.setPos(QPointF(0.0, height)); - item.setFont(font); - item.setZValue(ZValues::informationBox); - QRectF rect = item.boundingRect(); - width = std::max(width, rect.width()); - height += rect.height(); + 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>(scene()->sceneRect().height()); + int maxHeight = static_cast<int>(sceneSize().height()); return maxHeight * 2 / fm.height() / 3; } |