442 lines
14 KiB
C++
442 lines
14 KiB
C++
/*
|
|
* KSysGuard, the KDE System Guard
|
|
*
|
|
* Copyright 1999 - 2001 Chris Schlaeger <cs@kde.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Library General Public License as
|
|
* published by the Free Software Foundation; either version 2, or
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef SIGNALPLOTTER_H
|
|
#define SIGNALPLOTTER_H
|
|
|
|
#include <QtGui/QFont>
|
|
#include <QtGui/QGraphicsWidget>
|
|
#include <plasma/plasma_export.h>
|
|
|
|
namespace Plasma
|
|
{
|
|
|
|
struct PlotColor
|
|
{
|
|
QColor color;
|
|
QColor darkColor;
|
|
};
|
|
|
|
class PLASMA_EXPORT SignalPlotter : public QGraphicsWidget
|
|
{
|
|
Q_OBJECT
|
|
Q_PROPERTY( QString title READ title WRITE setTitle )
|
|
Q_PROPERTY( QString unit READ unit WRITE setUnit )
|
|
Q_PROPERTY( qreal scale READ scaledBy WRITE scale ) // Note: The naming of the functions here is poor
|
|
Q_PROPERTY( bool useAutoRange READ useAutoRange WRITE setUseAutoRange )
|
|
Q_PROPERTY( uint horizontalScale READ horizontalScale WRITE setHorizontalScale )
|
|
Q_PROPERTY( bool showVerticalLines READ showVerticalLines WRITE setShowVerticalLines )
|
|
Q_PROPERTY( QColor verticalLinesColor READ verticalLinesColor WRITE setVerticalLinesColor )
|
|
Q_PROPERTY( uint verticalLinesDistance READ verticalLinesDistance WRITE setVerticalLinesDistance )
|
|
Q_PROPERTY( bool verticalLinesScroll READ verticalLinesScroll WRITE setVerticalLinesScroll )
|
|
Q_PROPERTY( bool showHorizontalLines READ showHorizontalLines WRITE setShowHorizontalLines )
|
|
Q_PROPERTY( QColor horizontalLinesColor READ horizontalLinesColor WRITE setHorizontalLinesColor )
|
|
Q_PROPERTY( QColor fontColor READ fontColor WRITE setFontColor )
|
|
Q_PROPERTY( QFont font READ font WRITE setFont )
|
|
Q_PROPERTY( uint horizontalLinesCount READ horizontalLinesCount WRITE setHorizontalLinesCount )
|
|
Q_PROPERTY( bool showLabels READ showLabels WRITE setShowLabels )
|
|
Q_PROPERTY( bool showTopBar READ showTopBar WRITE setShowTopBar )
|
|
Q_PROPERTY( QColor backgroundColor READ backgroundColor WRITE setBackgroundColor )
|
|
Q_PROPERTY( QString svgBackground READ svgBackground WRITE setSvgBackground )
|
|
Q_PROPERTY( bool thinFrame WRITE setThinFrame )
|
|
Q_PROPERTY( bool stackPlots READ stackPlots WRITE setStackPlots )
|
|
|
|
public:
|
|
SignalPlotter(QGraphicsItem *parent = 0);
|
|
~SignalPlotter();
|
|
|
|
/**
|
|
* Add a new line to the graph plotter, with the specified color.
|
|
* Note that the order you add the plots must be the same order that
|
|
* the same data is given in (unless you reorder the plots).
|
|
* @param color the color to use for this plot
|
|
*/
|
|
void addPlot(const QColor &color);
|
|
|
|
/**
|
|
* Add data to the graph, and advance the graph by one time period.
|
|
* The data must be given as a list in the same order that the plots were
|
|
* added (or consequently reordered).
|
|
* @param samples a list with the new value for each plot
|
|
*/
|
|
void addSample(const QList<double> &samples);
|
|
|
|
/**
|
|
* Reorder the plots into the order given. For example:
|
|
* \code
|
|
* KSignalPlotter *s = KSignalPlotter(parent);
|
|
* s->addPlot(Qt::Blue);
|
|
* s->addPlot(Qt::Green);
|
|
* QList neworder;
|
|
* neworder << 1 << 0;
|
|
* reorderPlots(newOrder);
|
|
* //Now the order is Green then Blue
|
|
* \endcode
|
|
* @param newOrder a list with the new position of each plot
|
|
*/
|
|
void reorderPlots(const QList<uint>& newOrder);
|
|
|
|
/**
|
|
* Removes the plot at the specified index.
|
|
* @param pos the index of the plot to be removed
|
|
*/
|
|
void removePlot(uint pos);
|
|
|
|
/**
|
|
* Return the list of plot colors, in the order that the plots
|
|
* were added (or later reordered).
|
|
* @return a list containing the color of every plot
|
|
*/
|
|
QList<PlotColor> &plotColors();
|
|
|
|
/**
|
|
* Set the title of the graph. Drawn in the top left.
|
|
* @param title the title to use in the plotter
|
|
*/
|
|
void setTitle(const QString &title);
|
|
|
|
/**
|
|
* Get the title of the graph. Drawn in the top left.
|
|
* @return the title to use in the plotter
|
|
*/
|
|
QString title() const;
|
|
|
|
/**
|
|
* Set the units. Drawn on the vertical axis of the graph.
|
|
* Must be already translated into the local language.
|
|
* @param unit the unit string to use
|
|
*/
|
|
void setUnit(const QString &unit);
|
|
|
|
/**
|
|
* Return the units used on the vertical axis of the graph.
|
|
* @return the unit string used
|
|
*/
|
|
QString unit() const;
|
|
|
|
/**
|
|
* Scale all the values down by the given amount. This is useful
|
|
* when the data is given in, say, kilobytes, but you set the
|
|
* units as megabytes. Thus you would have to call this with @p value
|
|
* set to 1024. This affects all the data already entered.
|
|
* @param delta the factor used to scale down the values
|
|
*/
|
|
void scale(qreal delta);
|
|
|
|
/**
|
|
* Amount scaled down by. @see scale
|
|
* @return the factor used to scale down the values
|
|
*/
|
|
qreal scaledBy() const;
|
|
|
|
/**
|
|
* Set the minimum and maximum values on the vertical axis
|
|
* automatically from the data available.
|
|
* @param value true if the plotter should calculate its own
|
|
* min and max values, otherwise false
|
|
*/
|
|
void setUseAutoRange(bool value);
|
|
|
|
/**
|
|
* Whether the vertical axis range is set automatically.
|
|
* @return true if the plotter calculates its own min and max
|
|
* values, otherwise false
|
|
*/
|
|
bool useAutoRange() const;
|
|
|
|
/**
|
|
* Change the minimum and maximum values drawn on the graph.
|
|
* Note that these values are sanitised. For example, if you
|
|
* set the minimum as 3, and the maximum as 97, then the graph
|
|
* would be drawn between 0 and 100. The algorithm to determine
|
|
* this "nice range" attempts to minimize the number of non-zero
|
|
* digits.
|
|
*
|
|
* Use setAutoRange instead to determine the range automatically
|
|
* from the data.
|
|
* @param min the minimum value to use for the vertical axis
|
|
* @param max the maximum value to use for the vertical axis
|
|
*/
|
|
void setVerticalRange(double min, double max);
|
|
|
|
/**
|
|
* Get the min value of the vertical axis. @see changeRange
|
|
* @return the minimum value to use for the vertical axis
|
|
*/
|
|
double verticalMinValue() const;
|
|
|
|
/**
|
|
* Get the max value of the vertical axis. @see changeRange
|
|
* @return the maximum value to use for the vertical axis
|
|
*/
|
|
double verticalMaxValue() const;
|
|
|
|
/**
|
|
* Set the number of pixels horizontally between data points
|
|
* @param scale the number of pixel to draw between two data points
|
|
*/
|
|
void setHorizontalScale(uint scale);
|
|
|
|
/**
|
|
* The number of pixels horizontally between data points
|
|
* @return the number of pixel drawn between two data points
|
|
*/
|
|
uint horizontalScale() const;
|
|
|
|
/**
|
|
* Whether to draw the vertical grid lines
|
|
* @param value true if the lines should be drawn, otherwise false
|
|
*/
|
|
void setShowVerticalLines(bool value);
|
|
|
|
/**
|
|
* Whether the vertical grid lines will be drawn
|
|
* @return true if the lines will be drawn, otherwise false
|
|
*/
|
|
bool showVerticalLines() const;
|
|
|
|
/**
|
|
* The color of the vertical grid lines
|
|
* @param color the color used to draw the vertical grid lines
|
|
*/
|
|
void setVerticalLinesColor(const QColor &color);
|
|
|
|
/**
|
|
* The color of the vertical grid lines
|
|
* @return the color used to draw the vertical grid lines
|
|
*/
|
|
QColor verticalLinesColor() const;
|
|
|
|
/**
|
|
* The horizontal distance between the vertical grid lines
|
|
* @param distance the distance between two vertical grid lines
|
|
*/
|
|
void setVerticalLinesDistance(uint distance);
|
|
|
|
/**
|
|
* The horizontal distance between the vertical grid lines
|
|
* @return the distance between two vertical grid lines
|
|
*/
|
|
uint verticalLinesDistance() const;
|
|
|
|
/**
|
|
* Whether the vertical lines move with the data
|
|
* @param value true if the vertical lines should move with the data
|
|
*/
|
|
void setVerticalLinesScroll(bool value);
|
|
|
|
/**
|
|
* Whether the vertical lines move with the data
|
|
* @return true if the vertical lines will move with the data
|
|
*/
|
|
bool verticalLinesScroll() const;
|
|
|
|
/**
|
|
* Whether to draw the horizontal grid lines
|
|
* @param value true if the lines should be drawn, otherwise false
|
|
*/
|
|
void setShowHorizontalLines(bool value);
|
|
/**
|
|
* Whether to draw the horizontal grid lines
|
|
* @return true if the lines will be drawn, otherwise false
|
|
*/
|
|
bool showHorizontalLines() const;
|
|
|
|
/**
|
|
* The color of the horizontal grid lines
|
|
* @param color the color used to draw the horizontal grid lines
|
|
*/
|
|
void setHorizontalLinesColor(const QColor &color);
|
|
|
|
/**
|
|
* The color of the horizontal grid lines
|
|
* @return the color used to draw the horizontal grid lines
|
|
*/
|
|
QColor horizontalLinesColor() const;
|
|
|
|
/**
|
|
* The color of the font used for the axis
|
|
* @param color the color used to draw the text of the vertical values
|
|
*/
|
|
void setFontColor(const QColor &color);
|
|
|
|
/**
|
|
* The color of the font used for the axis
|
|
* @return the color used to draw the text of the vertical values
|
|
*/
|
|
QColor fontColor() const;
|
|
|
|
/**
|
|
* The font used for the axis
|
|
* @param font the font used to draw the text of the vertical values
|
|
*/
|
|
void setFont(const QFont &font);
|
|
|
|
/**
|
|
* The font used for the axis
|
|
* @return the font used to draw the text of the vertical values
|
|
*/
|
|
QFont font() const;
|
|
|
|
/**
|
|
* The number of horizontal lines to draw. Doesn't include the top
|
|
* most and bottom most lines.
|
|
* @param count the number of horizontal lines to draw
|
|
*/
|
|
void setHorizontalLinesCount(uint count);
|
|
|
|
/**
|
|
* The number of horizontal lines to draw. Doesn't include the top
|
|
* most and bottom most lines.
|
|
* @return the number of horizontal lines that will be drawn
|
|
*/
|
|
uint horizontalLinesCount() const;
|
|
|
|
/**
|
|
* Whether to show the vertical axis labels
|
|
* @param value true if the values for the vertical axis should get drawn
|
|
*/
|
|
void setShowLabels(bool value);
|
|
|
|
/**
|
|
* Whether to show the vertical axis labels
|
|
* @return true if the values for the vertical axis will get drawn
|
|
*/
|
|
bool showLabels() const;
|
|
|
|
/**
|
|
* Whether to show the title etc at the top. Even if set, it
|
|
* won't be shown if there isn't room
|
|
* @param value true if the topbar should be shown
|
|
*/
|
|
void setShowTopBar(bool value);
|
|
|
|
/**
|
|
* Whether to show the title etc at the top. Even if set, it
|
|
* won't be shown if there isn't room
|
|
* @return true if the topbar will be shown
|
|
*/
|
|
bool showTopBar() const;
|
|
|
|
/**
|
|
* The color to set the background. This might not be seen
|
|
* if an svg is also set.
|
|
* @param color the color to use for the plotter background
|
|
*/
|
|
void setBackgroundColor(const QColor &color);
|
|
|
|
/**
|
|
* The color to set the background. This might not be seen
|
|
* if an svg is also set.
|
|
* @return the color of the plotter background
|
|
*/
|
|
QColor backgroundColor() const;
|
|
|
|
/**
|
|
* The filename of the svg background. Set to empty to disable
|
|
* again.
|
|
* @param filename the SVG file to use as a background image
|
|
*/
|
|
void setSvgBackground(const QString &filename);
|
|
|
|
/**
|
|
* The filename of the svg background. Set to empty to disable
|
|
* again.
|
|
* @return the file used as a background image
|
|
*/
|
|
QString svgBackground();
|
|
|
|
/**
|
|
* Return the last value that we have for plot i. Returns 0 if not known.
|
|
* @param i the plot we like to have the last value from
|
|
* @return the last value of this plot or 0 if not found
|
|
*/
|
|
double lastValue(uint i) const;
|
|
|
|
/**
|
|
* Return a translated string like: "34 %" or "100 KB" for plot i
|
|
* @param i the plot we like to have the value as string from
|
|
* @return the last value of this plot as a string
|
|
*/
|
|
QString lastValueAsString(uint i) const;
|
|
|
|
/**
|
|
* Whether to show a white line on the left and bottom of the widget,
|
|
* for a 3D effect
|
|
* @param set true if the frame should get drawn
|
|
*/
|
|
void setThinFrame(bool set);
|
|
|
|
/**
|
|
* Whether to stack the plots on top of each other. The first plot
|
|
* added will be at the bottom. The next plot will be drawn on top,
|
|
* and so on.
|
|
* @param stack true if the plots should be stacked
|
|
*/
|
|
void setStackPlots(bool stack);
|
|
|
|
/**
|
|
* Whether to stack the plots. @see setStackPlots
|
|
* @return true if the plots will be stacked
|
|
*/
|
|
bool stackPlots() const;
|
|
|
|
/**
|
|
* Render the graph to the specified width and height, and return it
|
|
* as an image. This is useful, for example, if you draw a small version
|
|
* of the graph, but then want to show a large version in a tooltip etc
|
|
* @param width the width of the snapshot
|
|
* @param height the height of the snapshot
|
|
* @return a snapshot of the plotter as an image
|
|
*/
|
|
QPixmap getSnapshotImage(uint width, uint height);
|
|
|
|
/**
|
|
* Overwritten to be notified of size changes. Needed to update the
|
|
* data buffers that are used to store the samples.
|
|
*/
|
|
virtual void setGeometry(const QRectF &geometry);
|
|
|
|
protected:
|
|
void updateDataBuffers();
|
|
void calculateNiceRange();
|
|
|
|
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
|
|
|
|
void drawWidget(QPainter *p, uint w, uint height, int horizontalScale);
|
|
void drawBackground(QPainter *p, int w, int h);
|
|
void drawThinFrame(QPainter *p, int w, int h);
|
|
void drawTopBarFrame(QPainter *p, int separatorX, int height);
|
|
void drawTopBarContents(QPainter *p, int x, int width, int height);
|
|
void drawVerticalLines(QPainter *p, int top, int w, int h);
|
|
void drawPlots(QPainter *p, int top, int w, int h, int horizontalScale);
|
|
void drawAxisText(QPainter *p, int top, int h);
|
|
void drawHorizontalLines(QPainter *p, int top, int w, int h);
|
|
|
|
private:
|
|
class Private;
|
|
Private *const d;
|
|
};
|
|
|
|
} // Plasma namespace
|
|
|
|
#endif
|