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authorGravatar Berthold Stoeger <bstoeger@mail.tuwien.ac.at>2021-01-13 15:17:54 +0100
committerGravatar bstoeger <32835590+bstoeger@users.noreply.github.com>2021-01-20 08:47:18 +0100
commit785d5189f617bab7d5dde668563fc4889e46f695 (patch)
tree67a3d41998725d77aadc98c1d57de4a0c7f459d8 /stats/informationbox.cpp
parentd7878dad36e176ef0e2e1c54db891e115d29b489 (diff)
downloadsubsurface-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.cpp65
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;
}