qwtplotprintfilter(3) [debian man page]
QwtPlotPrintFilter(3) Qwt User's Guide QwtPlotPrintFilter(3) NAME
QwtPlotPrintFilter - A base class for plot print filters. SYNOPSIS
#include <qwt_plot_printfilter.h> Public Types enum Item { Title, Legend, Curve, CurveSymbol, Marker, MarkerSymbol, MajorGrid, MinorGrid, CanvasBackground, AxisScale, AxisTitle, WidgetBackground } enum Options { PrintMargin = 1, PrintTitle = 2, PrintLegend = 4, PrintGrid = 8, PrintBackground = 16, PrintFrameWithScales = 32, PrintAll = ~PrintFrameWithScales } Public Member Functions virtual void apply (QwtPlot *) const virtual void apply (QwtPlotItem *) const virtual QColor color (const QColor &, Item item) const virtual QFont font (const QFont &, Item item) const int options () const QwtPlotPrintFilter () virtual void reset (QwtPlotItem *) const virtual void reset (QwtPlot *) const void setOptions (int options) virtual ~QwtPlotPrintFilter () Detailed Description A base class for plot print filters. A print filter can be used to customize QwtPlot::print(). Deprecated In Qwt 5.0 the design of QwtPlot allows/recommends writing individual QwtPlotItems, that are not known to QwtPlotPrintFilter. So this concept is outdated and QwtPlotPrintFilter will be removed/replaced in Qwt 6.x. Member Enumeration Documentation enum QwtPlotPrintFilter::Item Print items. enum QwtPlotPrintFilter::Options Print options. Constructor &; Destructor Documentation QwtPlotPrintFilter::QwtPlotPrintFilter () [explicit] Sets filter options to PrintAll QwtPlotPrintFilter::~QwtPlotPrintFilter () [virtual] Destructor. Member Function Documentation void QwtPlotPrintFilter::apply (QwtPlot *plot) const [virtual] Change color and fonts of a plot See also: apply() QColor QwtPlotPrintFilter::color (const QColor &c, Itemitem) const [virtual] Modifies a color for printing. Parameters: c Color to be modified item Type of item where the color belongs Returns: Modified color. In case of !(QwtPlotPrintFilter::options() & PrintBackground) MajorGrid is modified to Qt::darkGray, MinorGrid to Qt::gray. All other colors are returned unmodified. QFont QwtPlotPrintFilter::font (const QFont &f, Itemitem) const [virtual] Modifies a font for printing. Parameters: f Font to be modified item Type of item where the font belongs All fonts are returned unmodified int QwtPlotPrintFilter::options () const Get plot print options. See also: setOptions() void QwtPlotPrintFilter::reset (QwtPlot *plot) const [virtual] Reset color and fonts of a plot See also: apply() void QwtPlotPrintFilter::setOptions (intoptions) Set plot print options. Parameters: options Or'd QwtPlotPrintFilter::Options values See also: options() Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 5.2.2 Mon Aug 1 2011 QwtPlotPrintFilter(3)
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QwtPlotRescaler(3) Qwt User's Guide QwtPlotRescaler(3) NAME
QwtPlotRescaler - QwtPlotRescaler takes care of fixed aspect ratios for plot scales. SYNOPSIS
#include <qwt_plot_rescaler.h> Public Types enum ExpandingDirection { ExpandUp, ExpandDown, ExpandBoth } enum RescalePolicy { Fixed, Expanding, Fitting } Public Member Functions double aspectRatio (int axis) const QwtPlotCanvas * canvas () const QwtPlotCanvas * canvas () const virtual bool eventFilter (QObject *, QEvent *) ExpandingDirection expandingDirection (int axis) const QwtDoubleInterval intervalHint (int axis) const bool isEnabled () const QwtPlot * plot () const QwtPlot * plot () const QwtPlotRescaler (QwtPlotCanvas *, int referenceAxis=QwtPlot::xBottom, RescalePolicy=Expanding) int referenceAxis () const void rescale () const RescalePolicy rescalePolicy () const void setAspectRatio (int axis, double ratio) void setAspectRatio (double ratio) void setEnabled (bool) void setExpandingDirection (int axis, ExpandingDirection) void setExpandingDirection (ExpandingDirection) void setIntervalHint (int axis, const QwtDoubleInterval &) void setReferenceAxis (int axis) void setRescalePolicy (RescalePolicy) virtual ~QwtPlotRescaler () Protected Member Functions virtual void canvasResizeEvent (QResizeEvent *) QwtDoubleInterval expandInterval (const QwtDoubleInterval &, double width, ExpandingDirection) const virtual QwtDoubleInterval expandScale (int axis, const QSize &oldSize, const QSize &newSize) const QwtDoubleInterval interval (int axis) const Qt::Orientation orientation (int axis) const virtual void rescale (const QSize &oldSize, const QSize &newSize) const virtual QwtDoubleInterval syncScale (int axis, const QwtDoubleInterval &reference, const QSize &size) const virtual void updateScales (QwtDoubleInterval intervals[QwtPlot::axisCnt]) const Detailed Description QwtPlotRescaler takes care of fixed aspect ratios for plot scales. QwtPlotRescaler autoadjusts the axes of a QwtPlot according to fixed aspect ratios. Member Enumeration Documentation enum QwtPlotRescaler::RescalePolicy Rescale Policy. The rescale policy defines how to rescale the reference axis and their depending axes. o Fixed The interval of the reference axis remains unchanged, when the geometry of the canvas changes. All other axes will be adjusted according to their aspect ratio. o Expanding The interval of the reference axis will be shrinked/expanded, when the geometry of the canvas changes. All other axes will be adjusted according to their aspect ratio. The interval, that is represented by one pixel is fixed. o Fitting The intervals of the axes are calculated, so that all axes include their minimal interval. Constructor &; Destructor Documentation QwtPlotRescaler::QwtPlotRescaler (QwtPlotCanvas *canvas, intreferenceAxis = QwtPlot::xBottom, RescalePolicypolicy = Expanding) [explicit] Constructor Parameters: canvas Canvas referenceAxis Reference axis, see RescalePolicy policy Rescale policy See also: setRescalePolicy(), setReferenceAxis() QwtPlotRescaler::~QwtPlotRescaler () [virtual] Destructor. Member Function Documentation double QwtPlotRescaler::aspectRatio (intaxis) const Return aspect ratio between an axis and the reference axis. Parameters: axis Axis index ( see QwtPlot::AxisId ) See also: setAspectRatio() const QwtPlotCanvas * QwtPlotRescaler::canvas () const Returns: plot canvas QwtPlotCanvas * QwtPlotRescaler::canvas () Returns: plot canvas bool QwtPlotRescaler::eventFilter (QObject *o, QEvent *e) [virtual] Event filter for the plot canvas. QwtPlotRescaler::ExpandingDirection QwtPlotRescaler::expandingDirection (intaxis) const Return direction in which an axis should be expanded Parameters: axis Axis index ( see QwtPlot::AxisId ) See also: setExpandingDirection() QwtDoubleInterval QwtPlotRescaler::expandInterval (const QwtDoubleInterval &interval, doublewidth, ExpandingDirectiondirection) const [protected] Expand the interval Parameters: interval Interval to be expanded width Distance to be added to the interval direction Direction of the expand operation Returns: Expanded interval QwtDoubleInterval QwtPlotRescaler::expandScale (intaxis, const QSize &oldSize, const QSize &newSize) const [protected, virtual] Calculate the new scale interval of a plot axis Parameters: axis Axis index ( see QwtPlot::AxisId ) oldSize Previous size of the canvas newSize New size of the canvas Returns: Calculated new interval for the axis QwtDoubleInterval QwtPlotRescaler::interval (intaxis) const [protected] Return interval of an axis Parameters: axis Axis index ( see QwtPlot::AxisId ) bool QwtPlotRescaler::isEnabled () const Returns: true when enabled, false otherwise See also: setEnabled, eventFilter() Qt::Orientation QwtPlotRescaler::orientation (intaxis) const [protected] Return orientation of an axis Parameters: axis Axis index ( see QwtPlot::AxisId ) QwtPlot * QwtPlotRescaler::plot () Returns: plot widget const QwtPlot * QwtPlotRescaler::plot () const Returns: plot widget int QwtPlotRescaler::referenceAxis () const Returns: Reference axis ( see RescalePolicy ) See also: setReferenceAxis() void QwtPlotRescaler::rescale () const Adjust the plot axes scales. void QwtPlotRescaler::rescale (const QSize &oldSize, const QSize &newSize) const [protected, virtual] Adjust the plot axes scales Parameters: oldSize Previous size of the canvas newSize New size of the canvas QwtPlotRescaler::RescalePolicy QwtPlotRescaler::rescalePolicy () const Returns: Rescale policy See also: setRescalePolicy() void QwtPlotRescaler::setAspectRatio (intaxis, doubleratio) Set the aspect ratio between the scale of the reference axis and another scale. The default ratio is 1.0 Parameters: axis Axis index ( see QwtPlot::AxisId ) ratio Aspect ratio See also: aspectRatio() void QwtPlotRescaler::setAspectRatio (doubleratio) Set the aspect ratio between the scale of the reference axis and the other scales. The default ratio is 1.0 Parameters: ratio Aspect ratio See also: aspectRatio() void QwtPlotRescaler::setEnabled (boolon) En/disable the rescaler. When enabled is true an event filter is installed for the canvas, otherwise the event filter is removed. Parameters: on true or false See also: isEnabled(), eventFilter() void QwtPlotRescaler::setExpandingDirection (intaxis, ExpandingDirectiondirection) Set the direction in which an axis should be expanded Parameters: axis Axis index ( see QwtPlot::AxisId ) direction Direction See also: expandingDirection() void QwtPlotRescaler::setExpandingDirection (ExpandingDirectiondirection) Set the direction in which all axis should be expanded Parameters: direction Direction See also: expandingDirection() void QwtPlotRescaler::setReferenceAxis (intaxis) Set the reference axis ( see RescalePolicy ) Parameters: axis Axis index ( QwtPlot::Axis ) See also: referenceAxis() void QwtPlotRescaler::setRescalePolicy (RescalePolicypolicy) Change the rescale policy Parameters: policy Rescale policy See also: rescalePolicy() QwtDoubleInterval QwtPlotRescaler::syncScale (intaxis, const QwtDoubleInterval &reference, const QSize &size) const [protected, virtual] Synchronize an axis scale according to the scale of the reference axis Parameters: axis Axis index ( see QwtPlot::AxisId ) reference Interval of the reference axis size Size of the canvas void QwtPlotRescaler::updateScales (QwtDoubleIntervalintervals[QwtPlot::axisCnt]) const [protected, virtual] Update the axes scales Parameters: intervals Scale intervals Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 5.2.2 Mon Aug 1 2011 QwtPlotRescaler(3)