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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>
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parent
d7878dad36
commit
785d5189f6
8 changed files with 53 additions and 58 deletions
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@ -4,6 +4,7 @@
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#include "statscolors.h"
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#include "statshelper.h"
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#include "statstranslations.h"
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#include "statsview.h"
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#include "zvalues.h"
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#include <math.h> // for lrint()
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@ -403,7 +404,7 @@ bool BarSeries::hover(QPointF pos)
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Item &item = items[highlighted.bar];
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item.highlight(index.subitem, true, binCount());
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if (!information)
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information = createItemPtr<InformationBox>(scene);
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information = view.createChartItem<InformationBox>();
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information->setText(makeInfo(item, highlighted.subitem), pos);
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} else {
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information.reset();
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@ -4,6 +4,7 @@
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#include "statscolors.h"
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#include "statshelper.h"
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#include "statstranslations.h"
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#include "statsview.h"
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#include "zvalues.h"
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#include <QLocale>
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@ -149,7 +150,7 @@ bool BoxSeries::hover(QPointF pos)
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Item &item = *items[highlighted];
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item.highlight(true);
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if (!information)
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information = createItemPtr<InformationBox>(scene);
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information = view.createChartItem<InformationBox>();
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information->setText(formatInformation(item), pos);
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} else {
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information.reset();
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@ -1,9 +1,9 @@
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#include "informationbox.h"
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#include "statscolors.h"
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#include "statsview.h"
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#include "zvalues.h"
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#include <QFontMetrics>
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#include <QGraphicsScene>
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static const QColor informationBorderColor(Qt::black);
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static const QColor informationColor(0xff, 0xff, 0x00, 192); // Note: fourth argument is opacity
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@ -11,74 +11,65 @@ static const int informationBorder = 2;
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static const double informationBorderRadius = 4.0; // Radius of rounded corners
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static const int distanceFromPointer = 10; // Distance to place box from mouse pointer or scatter item
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InformationBox::InformationBox() : RoundRectItem(informationBorderRadius, nullptr)
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InformationBox::InformationBox(StatsView &v) :
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ChartRectItem(v, QPen(informationBorderColor, informationBorder),
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QBrush(informationColor), informationBorderRadius)
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{
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setPen(QPen(informationBorderColor, informationBorder));
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setBrush(informationColor);
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setZValue(ZValues::informationBox);
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}
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void InformationBox::setText(const std::vector<QString> &text, QPointF pos)
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{
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width = height = 0.0;
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textItems.clear();
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QFontMetrics fm(font);
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double fontHeight = fm.height();
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std::vector<double> widths;
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widths.reserve(text.size());
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width = 0.0;
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for (const QString &s: text) {
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if (!s.isEmpty())
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addLine(s);
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widths.push_back(static_cast<double>(fm.size(Qt::TextSingleLine, s).width()));
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width = std::max(width, widths.back());
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}
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width += 4.0 * informationBorder;
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height += 4.0 * informationBorder;
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height = widths.size() * fontHeight + 4.0 * informationBorder;
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// Setting the position will also set the proper size
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setPos(pos);
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ChartRectItem::resize(QSizeF(width, height));
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painter->setPen(QPen(darkLabelColor)); // QPainter uses QPen to set text color!
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double y = 2.0 * informationBorder;
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for (size_t i = 0; i < widths.size(); ++i) {
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QRectF rect(2.0 * informationBorder, y, widths[i], fontHeight);
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painter->drawText(rect, text[i]);
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y += fontHeight;
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}
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}
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void InformationBox::setPos(QPointF pos)
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{
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QRectF plotArea = scene()->sceneRect();
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QSizeF size = sceneSize();
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double x = pos.x() + distanceFromPointer;
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if (x + width >= plotArea.right()) {
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if (pos.x() - width >= plotArea.x())
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if (x + width >= size.width()) {
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if (pos.x() - width >= 0.0)
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x = pos.x() - width;
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else
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x = pos.x() - width / 2.0;
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}
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double y = pos.y() + distanceFromPointer;
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if (y + height >= plotArea.bottom()) {
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if (pos.y() - height >= plotArea.y())
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if (y + height >= size.height()) {
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if (pos.y() - height >= 0.0)
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y = pos.y() - height;
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else
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y = pos.y() - height / 2.0;
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}
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setRect(x, y, width, height);
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double actY = y + 2.0 * informationBorder;
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for (auto &item: textItems) {
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item->setPos(QPointF(x + 2.0 * informationBorder, actY));
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actY += item->boundingRect().height();
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}
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}
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void InformationBox::addLine(const QString &s)
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{
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textItems.emplace_back(new QGraphicsSimpleTextItem(s, this));
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QGraphicsSimpleTextItem &item = *textItems.back();
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item.setBrush(QBrush(darkLabelColor));
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item.setPos(QPointF(0.0, height));
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item.setFont(font);
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item.setZValue(ZValues::informationBox);
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QRectF rect = item.boundingRect();
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width = std::max(width, rect.width());
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height += rect.height();
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ChartRectItem::setPos(QPointF(x, y));
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}
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// Try to stay within three-thirds of the chart height
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int InformationBox::recommendedMaxLines() const
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{
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QFontMetrics fm(font);
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int maxHeight = static_cast<int>(scene()->sceneRect().height());
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int maxHeight = static_cast<int>(sceneSize().height());
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return maxHeight * 2 / fm.height() / 3;
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}
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@ -4,26 +4,24 @@
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#ifndef INFORMATION_BOX_H
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#define INFORMATION_BOX_H
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#include "backend-shared/roundrectitem.h"
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#include "chartitem.h"
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#include <vector>
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#include <memory>
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#include <QFont>
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struct dive;
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class QGraphicsScene;
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class StatsView;
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// Information window showing data of highlighted dive
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struct InformationBox : RoundRectItem {
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InformationBox();
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struct InformationBox : ChartRectItem {
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InformationBox(StatsView &);
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void setText(const std::vector<QString> &text, QPointF pos);
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void setPos(QPointF pos);
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int recommendedMaxLines() const;
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private:
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QFont font; // For future specialization.
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double width, height;
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void addLine(const QString &s);
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std::vector<std::unique_ptr<QGraphicsSimpleTextItem>> textItems;
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};
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#endif
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@ -4,6 +4,7 @@
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#include "statscolors.h"
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#include "statshelper.h"
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#include "statstranslations.h"
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#include "statsview.h"
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#include "zvalues.h"
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#include <numeric>
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@ -246,7 +247,7 @@ bool PieSeries::hover(QPointF pos)
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if (highlighted >= 0 && highlighted < (int)items.size()) {
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items[highlighted].highlight(highlighted, true, (int)items.size());
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if (!information)
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information = createItemPtr<InformationBox>(scene);
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information = view.createChartItem<InformationBox>();
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information->setText(makeInfo(highlighted), pos);
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} else {
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information.reset();
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@ -5,6 +5,7 @@
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#include "statshelper.h"
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#include "statstranslations.h"
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#include "statsvariables.h"
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#include "statsview.h"
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#include "zvalues.h"
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#include "core/dive.h"
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#include "core/divelist.h"
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@ -173,7 +174,7 @@ bool ScatterSeries::hover(QPointF pos)
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return false;
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} else {
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if (!information)
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information = createItemPtr<InformationBox>(scene);
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information = view.createChartItem<InformationBox>();
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std::vector<QString> text;
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text.reserve(highlighted.size() * 5);
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@ -279,14 +279,6 @@ T *StatsView::createAxis(const QString &title, Args&&... args)
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return res;
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}
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template <typename T, class... Args>
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std::unique_ptr<T> StatsView::createChartItem(Args&&... args)
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{
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std::unique_ptr<T> res(new T(*this, std::forward<Args>(args)...));
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items.push_back(res.get());
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return res;
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}
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void StatsView::setAxes(StatsAxis *x, StatsAxis *y)
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{
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xAxis = x;
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@ -52,6 +52,9 @@ public:
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QSizeF size() const;
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void addQSGNode(QSGNode *node, int z); // Must only be called in render thread!
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void unregisterChartItem(const ChartItem *item);
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template <typename T, class... Args>
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std::unique_ptr<T> createChartItem(Args&&... args);
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private slots:
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void replotIfVisible();
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private:
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template <typename T, class... Args>
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T *createAxis(const QString &title, Args&&... args);
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template <typename T, class... Args>
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std::unique_ptr<T> createChartItem(Args&&... args);
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template<typename T>
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CategoryAxis *createCategoryAxis(const QString &title, const StatsBinner &binner,
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const std::vector<T> &bins, bool isHorizontal);
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@ -179,4 +179,14 @@ private:
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QSGImageNode *rootNode;
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};
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// This implementation detail must be known to users of the class.
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// Perhaps move it into a statsview_impl.h file.
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template <typename T, class... Args>
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std::unique_ptr<T> StatsView::createChartItem(Args&&... args)
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{
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std::unique_ptr<T> res(new T(*this, std::forward<Args>(args)...));
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items.push_back(res.get());
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return res;
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}
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#endif
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