NAME
QwtPlotLayout -
SYNOPSIS
Detailed Description
Layout class for QwtPlot.
Organizes the geometry for the different QwtPlot components.
Definition at line 25 of file qwt_plot_layout.h.
Public Types
enum Options { AlignScales = 1, IgnoreScrollbars = 2, IgnoreFrames =
4, IgnoreMargin = 8, IgnoreLegend = 16 }
Public Member Functions
QwtPlotLayout ()
virtual ~QwtPlotLayout ()
void setMargin (int)
int margin () const
void setCanvasMargin (int margin, int axis=-1)
int canvasMargin (int axis) const
void setAlignCanvasToScales (bool)
bool alignCanvasToScales () const
void setSpacing (int)
int spacing () const
void setLegendPosition (QwtPlot::Position pos, double ratio)
void setLegendPosition (QwtPlot::Position pos)
QwtPlot::Position legendPosition () const
void setLegendRatio (double ratio)
double legendRatio () const
void setLegendPos (int pos, double ratio=0.0)
int legendPos () const
virtual QSize minimumSizeHint (const QwtPlot *) const
virtual void activate (const QwtPlot *, const QRect &rect, int
options=0)
virtual void invalidate ()
const QRect & titleRect () const
const QRect & legendRect () const
const QRect & scaleRect (int axis) const
const QRect & canvasRect () const
Protected Member Functions
QRect layoutLegend (int options, const QRect &) const
QRect alignLegend (const QRect &canvasRect, const QRect &legendRect)
const
void expandLineBreaks (int options, const QRect &rect, int &dimTitle,
int dimAxes[QwtPlot::axisCnt]) const
void alignScales (int options, QRect &canvasRect, QRect
scaleRect[QwtPlot::axisCnt]) const
Protected Attributes
QRect d_titleRect
QRect d_legendRect
QRect d_scaleRect [QwtPlot::axisCnt]
QRect d_canvasRect
QwtPlotLayoutData * d_layoutData
Constructor & Destructor Documentation
QwtPlotLayout::QwtPlotLayout ()
Constructor.
Definition at line 66 of file qwt_plot_layout.cpp.
References invalidate(), setCanvasMargin(), and setLegendPosition().
QwtPlotLayout::~QwtPlotLayout () [virtual]
Destructor.
Definition at line 79 of file qwt_plot_layout.cpp.
Member Function Documentation
void QwtPlotLayout::activate (const QwtPlot * plot, const QRect & plotRect,
int options = 0) [virtual]
Recalculate the geometry of all components.
Parameters:
plot Plot to be layout
plotRect Rect where to place the components
options Options
See also:
QwtPlotLayout::invalidate(), QwtPlotLayout::titleRect(),
QwtPlotLayout::legendRect(), QwtPlotLayout::scaleRect(),
QwtPlotLayout::canvasRect()
Definition at line 910 of file qwt_plot_layout.cpp.
References alignLegend(), alignScales(), expandLineBreaks(),
invalidate(), QwtLegend::isEmpty(), layoutLegend(), QwtPlot::legend(),
and scaleRect().
Referenced by QwtPlot::print(), and QwtPlot::updateLayout().
bool QwtPlotLayout::alignCanvasToScales () const
Return the align-canvas-to-axis-scales setting. The canvas may:
· extend beyond the axis scale ends to maximize its size
· align with the axis scale ends to control its size.
Returns:
align-canvas-to-axis-scales setting
See also:
QwtPlotLayout::setAlignCanvasToScales,
QwtPlotLayout::setCanvasMargin()
Note:
In this context the term ’scale’ means the backbone of a scale.
Definition at line 180 of file qwt_plot_layout.cpp.
QRect QwtPlotLayout::alignLegend (const QRect & canvasRect, const QRect &
legendRect) const [protected]
Align the legend to the canvas
Parameters:
canvasRect Geometry of the canvas
legendRect Maximum geometry for the legend
Returns:
Geometry for the aligned legend
Definition at line 630 of file qwt_plot_layout.cpp.
Referenced by activate().
void QwtPlotLayout::alignScales (int options, QRect & canvasRect, QRect
scaleRect[QwtPlot::axisCnt]) const [protected]
Align the ticks of the axis to the canvas borders using the empty
corners. Definition at line 773 of file qwt_plot_layout.cpp.
References scaleRect().
Referenced by activate().
int QwtPlotLayout::canvasMargin (int axis) const
Returns:
Margin around the scale tick borders
See also:
QwtPlotLayout::setCanvasMargin()
Definition at line 143 of file qwt_plot_layout.cpp.
Referenced by QwtPlot::canvasMap(), and QwtPlot::print().
const QRect & QwtPlotLayout::canvasRect () const
Returns:
Geometry for the canvas
See also:
QwtPlotLayout::activate(), QwtPlotLayout::invalidate()
Definition at line 374 of file qwt_plot_layout.cpp.
Referenced by QwtPlot::print(), and QwtPlot::updateLayout().
void QwtPlotLayout::expandLineBreaks (int options, const QRect & rect, int
& dimTitle, int dimAxis[QwtPlot::axisCnt]) const [protected]
Expand all line breaks in text labels, and calculate the height of
their widgets in orientation of the text.
Parameters:
options Options how to layout the legend
rect Bounding rect for title, axes and canvas.
dimTitle Expanded height of the title widget
dimAxis Expanded heights of the axis in axis orientation.
Definition at line 664 of file qwt_plot_layout.cpp.
Referenced by activate().
void QwtPlotLayout::invalidate () [virtual]
Invalidate the geometry of all components.
See also:
QwtPlotLayout::activate()
Definition at line 383 of file qwt_plot_layout.cpp.
Referenced by activate(), QwtPlot::print(), and QwtPlotLayout().
QRect QwtPlotLayout::layoutLegend (int options, const QRect & rect) const
[protected]
Find the geometry for the legend
Parameters:
options Options how to layout the legend
rect Rectangle where to place the legend
Returns:
Geometry for the legend
Definition at line 572 of file qwt_plot_layout.cpp.
References legendRect().
Referenced by activate().
int QwtPlotLayout::legendPos () const
Returns:
Position of the legend
See also:
QwtPlotLayout::setLegendPosition(), QwtPlot::setLegendPosition(),
QwtPlot::legendPosition()
Warning:
This function is deprecated. Use
QwtPlotLayout::setLegendPosition().
Definition at line 300 of file qwt_plot_layout.cpp.
QwtPlot::Position QwtPlotLayout::legendPosition () const
Returns:
Position of the legend
See also:
QwtPlotLayout::setLegendPosition(), QwtPlot::setLegendPosition(),
QwtPlot::legendPosition()
Definition at line 266 of file qwt_plot_layout.cpp.
Referenced by QwtPlot::legendPos(), QwtPlot::legendPosition(),
QwtPlot::setLegendPosition(), setLegendRatio(), and
QwtPlot::updateTabOrder().
double QwtPlotLayout::legendRatio () const
Returns:
The relative size of the legend in the plot.
See also:
QwtPlotLayout::setLegendPos(), QwtPlot::setLegendPos()
Definition at line 328 of file qwt_plot_layout.cpp.
const QRect & QwtPlotLayout::legendRect () const
Returns:
Geometry for the legend
See also:
QwtPlotLayout::activate(), QwtPlotLayout::invalidate()
Definition at line 348 of file qwt_plot_layout.cpp.
Referenced by layoutLegend(), QwtPlot::print(), and
QwtPlot::updateLayout().
int QwtPlotLayout::margin () const
Returns:
margin
See also:
QwtPlotLayout::setMargin(), QwtPlotLayout::spacing(),
QwtPlot::margin()
Definition at line 106 of file qwt_plot_layout.cpp.
Referenced by QwtPlot::margin(), and QwtPlot::setMargin().
QSize QwtPlotLayout::minimumSizeHint (const QwtPlot * plot) const [virtual]
Return a minimum size hint.
See also:
QwtPlot::minimumSizeHint()
Definition at line 395 of file qwt_plot_layout.cpp.
References QwtPlot::axis(), QwtScale::baseLineDist(),
QwtPlot::canvas(), QwtLegend::heightForWidth(), QwtLegend::isEmpty(),
QwtPlot::legend(), QwtScaleDraw::majTickLength(),
QwtScale::minBorderDist(), QwtScale::minimumSizeHint(),
QwtScale::scaleDraw(), QwtLegend::sizeHint(), and
QwtPlot::titleLabel().
Referenced by QwtPlot::minimumSizeHint().
const QRect & QwtPlotLayout::scaleRect (int axis) const
Parameters:
axis Axis index
Returns:
Geometry for the scale
See also:
QwtPlotLayout::activate(), QwtPlotLayout::invalidate()
Definition at line 359 of file qwt_plot_layout.cpp.
Referenced by activate(), alignScales(), QwtPlot::print(), and
QwtPlot::updateLayout().
void QwtPlotLayout::setAlignCanvasToScales (bool alignCanvasToScales)
Change the align-canvas-to-axis-scales setting. The canvas may:
· extend beyond the axis scale ends to maximize its size,
· align with the axis scale ends to control its size.
Parameters:
alignCanvasToScales New align-canvas-to-axis-scales setting
See also:
QwtPlotLayout::alignCanvasToTicks, QwtPlotLayout::setCanvasMargin()
Note:
In this context the term ’scale’ means the backbone of a scale.
Warning:
In case of alignCanvasToScales == TRUE canvasMargin will have no
effect
Definition at line 165 of file qwt_plot_layout.cpp.
void QwtPlotLayout::setCanvasMargin (int margin, int axis = -1)
Change a margin of the canvas. The margin is the space above/below the
scale ticks. A negative margin will be set to -1, excluding the borders
of the scales.
Parameters:
margin New margin
axis One of QwtPlot::Axis. Specifies where the position of the
margin. -1 means margin at all borders.
See also:
QwtPlotLayout::canvasMargin()
Warning:
The canvas will have no effect when alignCanvasToScales is TRUE
Definition at line 124 of file qwt_plot_layout.cpp.
Referenced by QwtPlotLayout().
void QwtPlotLayout::setLegendPos (int pos, double ratio = 0.0)
Specify the position of the legend.
Parameters:
pos The legend’s position. Valid values are Qwt::Left, Qwt::Right,
Qwt::Top, QwtBottom.
ratio Ratio between legend and the bounding rect of title, canvas
and axes. The legend will be shrinked if it would need more space
than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case
of <= 0.0 it will be reset to the default ratio. The default
vertical/horizontal ratio is 0.33/0.5.
See also:
QwtPlot::setLegendPosition()
Warning:
This function is deprecated. Use
QwtPlotLayout::setLegendPosition().
Definition at line 288 of file qwt_plot_layout.cpp.
References setLegendPosition().
void QwtPlotLayout::setLegendPosition (QwtPlot::Position pos)
Specify the position of the legend.
Parameters:
pos The legend’s position. Valid values are QwtPlot::Left,
QwtPlot::Right, QwtPlot::Top, QwtPlot::Bottom.
See also:
QwtPlot::setLegendPosition()
Definition at line 255 of file qwt_plot_layout.cpp.
References setLegendPosition().
void QwtPlotLayout::setLegendPosition (QwtPlot::Position pos, double ratio)
Specify the position of the legend.
Parameters:
pos The legend’s position. Valid values are QwtPlot::Left,
QwtPlot::Right, QwtPlot::Top, QwtPlot::Bottom.
ratio Ratio between legend and the bounding rect of title, canvas
and axes. The legend will be shrinked if it would need more space
than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case
of <= 0.0 it will be reset to the default ratio. The default
vertical/horizontal ratio is 0.33/0.5.
See also:
QwtPlot::setLegendPosition()
Definition at line 221 of file qwt_plot_layout.cpp.
Referenced by QwtPlotLayout(), setLegendPos(), setLegendPosition(),
QwtPlot::setLegendPosition(), and setLegendRatio().
void QwtPlotLayout::setLegendRatio (double ratio)
Specify the relative size of the legend in the plot
Parameters:
ratio Ratio between legend and the bounding rect of title, canvas
and axes. The legend will be shrinked if it would need more space
than the given ratio. The ratio is limited to ]0.0 .. 1.0]. In case
of <= 0.0 it will be reset to the default ratio. The default
vertical/horizontal ratio is 0.33/0.5.
See also:
QwtPlot::setLegendPosition()
Definition at line 318 of file qwt_plot_layout.cpp.
References legendPosition(), and setLegendPosition().
void QwtPlotLayout::setMargin (int margin)
Change the margin of the plot. The margin is the space around all
components.
Parameters:
margin new margin
See also:
QwtPlotLayout::margin(), QwtPlotLayout::setSpacing(),
QwtPlot::setMargin()
Definition at line 93 of file qwt_plot_layout.cpp.
Referenced by QwtPlot::setMargin().
void QwtPlotLayout::setSpacing (int spacing)
Change the spacing of the plot. The spacing is the distance between the
plot components.
Parameters:
spacing new spacing
See also:
QwtPlotLayout::setMargin(), QwtPlotLayout::spacing()
Definition at line 193 of file qwt_plot_layout.cpp.
int QwtPlotLayout::spacing () const
Returns:
spacing
See also:
QwtPlotLayout::margin(), QwtPlotLayout::setSpacing()
Definition at line 202 of file qwt_plot_layout.cpp.
const QRect & QwtPlotLayout::titleRect () const
Returns:
Geometry for the title
See also:
QwtPlotLayout::activate(), QwtPlotLayout::invalidate()
Definition at line 338 of file qwt_plot_layout.cpp.
Referenced by QwtPlot::print(), and QwtPlot::updateLayout().
Author
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