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efc89b9d9c
Use variable intervals for printing temperature and heart beat labels. Obviously, so that the labels don't become sparse on zooming, but also to make them not too crowded on mobile / small screens. This doesn't work for depth labels, because these labels use data provided from the profile.c core that doesn't know about the size of the chart. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
85 lines
2.7 KiB
C++
85 lines
2.7 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 class Position {
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Left, Right, Bottom
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};
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DiveCartesianAxis(Position position, bool inverted, int integralDigits, int fractionalDigits, color_index_t gridColor,
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QColor textColor, bool textVisible, bool linesVisible,
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double dpr, 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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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 setPosition(const QRectF &rect);
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void setTextVisible(bool arg1);
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void setLinesVisible(bool arg1);
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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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// The minimum space between two labels on the plot in seconds
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int getMinLabelDistance(const DiveCartesianAxis &timeAxis) const;
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private:
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Position position;
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bool inverted; // Top-to-bottom or right-to-left axis.
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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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QColor textColor;
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ProfileScene &scene;
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QString textForValue(double value) const;
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QList<DiveTextItem *> labels;
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QList<DiveLineItem *> lines;
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double dataMin, dataMax;
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double min, max;
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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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void updateLabels(int numTicks, double firstPosScreen, double firstValue, double stepScreen, double stepValue, int animSpeed);
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void updateLines(int numTicks, double firstPosScreen, double stepScreen, int animSpeed);
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};
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#endif // DIVECARTESIANAXIS_H
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