177df72d33
Instead of a host of virtual functions, let the base class (DiveCartesianAxis) do the formatting of the axis labels. To do so, it needs to know how to convert the internal representation (e.g. mm) into the displayed value (e.g. feet). Moreover, this transformation has to be adapted when changing the locale-setting, therefore do it for every plot() call. The transformation itself cannot be a simple linear translation, because we have non-absolute display units, namely °C and °F. Thankfully affine transformations are enough though. Only one custom formatter remains: the time axis. It might be a good idea to remove the virtual function and do this via a flag. This is all done not so much for code simplification, but because for a general layout of the axis labels, the axis has to understand the values of the labels and not only handle them as opaque texts. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#ifndef DIVECARTESIANAXIS_H
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#define DIVECARTESIANAXIS_H
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#include <QObject>
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#include <QGraphicsLineItem>
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#include <QPen>
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#include "core/color.h"
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#include "core/units.h"
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class ProfileScene;
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class QPropertyAnimation;
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class DiveTextItem;
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class DiveLineItem;
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class DivePlotDataModel;
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class DiveCartesianAxis : public QObject, public QGraphicsLineItem {
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Q_OBJECT
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Q_PROPERTY(QLineF line WRITE setLine READ line)
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Q_PROPERTY(QPointF pos WRITE setPos READ pos)
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Q_PROPERTY(qreal x WRITE setX READ x)
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Q_PROPERTY(qreal y WRITE setY READ y)
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private:
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bool printMode;
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public:
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enum Orientation {
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TopToBottom,
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BottomToTop,
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LeftToRight,
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RightToLeft
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};
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enum class Position {
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Left, Right, Bottom
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};
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DiveCartesianAxis(Position position, int integralDigits, int fractionalDigits, color_index_t gridColor, double dpr,
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double labelScale, bool printMode, bool isGrayscale, ProfileScene &scene);
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~DiveCartesianAxis();
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void setBounds(double min, double max);
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void setTransform(double a, double b = 0.0);
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void setTickInterval(double interval);
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void setOrientation(Orientation orientation);
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double minimum() const;
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double maximum() const;
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std::pair<double, double> screenMinMax() const;
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qreal valueAt(const QPointF &p) const;
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qreal posAtValue(qreal value) const;
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void animateChangeLine(const QRectF &rect, int animSpeed);
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void setTextVisible(bool arg1);
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void setLinesVisible(bool arg1);
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void setLine(const QLineF &line);
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virtual void updateTicks(int animSpeed);
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double width() const; // only for vertical axes
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double height() const; // only for horizontal axes
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signals:
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void sizeChanged();
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protected:
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Position position;
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int fractionalDigits;
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QRectF rect; // Rectangle to fill with grid lines
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QPen gridPen;
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color_index_t gridColor;
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ProfileScene &scene;
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virtual QString textForValue(double value) const;
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virtual QColor colorForValue(double value) const;
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Orientation orientation;
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QList<DiveTextItem *> labels;
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QList<DiveLineItem *> lines;
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double min;
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double max;
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double interval;
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bool textVisibility;
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bool lineVisibility;
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double labelScale;
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bool changed;
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double dpr;
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double labelWidth, labelHeight; // maximum expected sizes of label width and height
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// To format the labels and choose the label positions, the
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// axis has to be aware of the displayed values. Thankfully,
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// the conversion between internal data (eg. mm) and displayed
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// data (e.g. ft) can be represented by an affine map ax+b.
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struct Transform {
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double a, b;
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double to(double x) const;
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double from(double y) const;
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} transform;
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};
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class DepthAxis : public DiveCartesianAxis {
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Q_OBJECT
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public:
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using DiveCartesianAxis::DiveCartesianAxis;
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private:
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QColor colorForValue(double value) const override;
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};
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class TimeAxis : public DiveCartesianAxis {
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Q_OBJECT
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public:
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using DiveCartesianAxis::DiveCartesianAxis;
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void updateTicks(int animSpeed) override;
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private:
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QString textForValue(double value) const override;
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QColor colorForValue(double value) const override;
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};
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class TemperatureAxis : public DiveCartesianAxis {
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Q_OBJECT
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public:
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using DiveCartesianAxis::DiveCartesianAxis;
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};
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class PartialGasPressureAxis : public DiveCartesianAxis {
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Q_OBJECT
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public:
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PartialGasPressureAxis(const DivePlotDataModel &model, Position position, int integralDigits, int fractionalDigits,
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color_index_t gridColor, double dpr, double labelScale, bool printMode, bool isGrayscale, ProfileScene &scene);
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void update(int animSpeed);
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private:
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const DivePlotDataModel &model;
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};
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#endif // DIVECARTESIANAXIS_H
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