Quantum GIS API Documentation  1.7.4
Public Slots | Public Member Functions | Protected Member Functions | Protected Attributes
QgsComposerScaleBar Class Reference

A scale bar item that can be added to a map composition. More...

#include <qgscomposerscalebar.h>

Inheritance diagram for QgsComposerScaleBar:
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List of all members.

Public Slots

void updateSegmentSize ()
void invalidateCurrentMap ()
 Sets mCompositionMap to 0 if the map is deleted.

Public Member Functions

 QgsComposerScaleBar (QgsComposition *composition)
 ~QgsComposerScaleBar ()
virtual int type () const
 return correct graphics item type.
void paint (QPainter *painter, const QStyleOptionGraphicsItem *itemStyle, QWidget *pWidget)
 Reimplementation of QCanvasItem::paint.
int numSegments () const
void setNumSegments (int nSegments)
int numSegmentsLeft () const
void setNumSegmentsLeft (int nSegmentsLeft)
double numUnitsPerSegment () const
void setNumUnitsPerSegment (double units)
double numMapUnitsPerScaleBarUnit () const
void setNumMapUnitsPerScaleBarUnit (double d)
QString unitLabeling () const
void setUnitLabeling (const QString &label)
QFont font () const
void setFont (const QFont &font)
QPen pen () const
void setPen (const QPen &pen)
QBrush brush () const
void setBrush (const QBrush &brush)
double height () const
void setHeight (double h)
void setComposerMap (const QgsComposerMap *map)
const QgsComposerMapcomposerMap () const
double labelBarSpace () const
void setLabelBarSpace (double space)
double boxContentSpace () const
void setBoxContentSpace (double space)
double segmentMillimeters () const
void applyDefaultSettings ()
 Apply default settings.
void applyDefaultSize ()
 Apply default size (scale bar 1/5 of map item width)
void setStyle (const QString &styleName)
 Sets style by name.
QString style () const
 Returns style name.
void segmentPositions (QList< QPair< double, double > > &posWidthList) const
 Returns the x - positions of the segment borders (in item coordinates) and the width of the segment.
void adjustBoxSize ()
 Sets box size suitable to content.
void update ()
 Adjusts box size and calls QgsComposerItem::update()
QString firstLabelString () const
 Returns string of first label (important for drawing, labeling, size calculation.
bool writeXML (QDomElement &elem, QDomDocument &doc) const
 stores state in Dom element
bool readXML (const QDomElement &itemElem, const QDomDocument &doc)
 sets state from Dom document

Protected Member Functions

void refreshSegmentMillimeters ()
 Calculates with of a segment in mm and stores it in mSegmentMillimeters.

Protected Attributes

const QgsComposerMapmComposerMap
 Reference to composer map object.
int mNumSegments
 Number of segments on right side.
int mNumSegmentsLeft
 Number of segments on left side.
double mNumUnitsPerSegment
 Size of a segment (in map units)
double mNumMapUnitsPerScaleBarUnit
 Number of map units per scale bar units (e.g.
QString mUnitLabeling
 Labeling of map units.
QFont mFont
 Font.
QPen mPen
 Outline.
QBrush mBrush
 Fill.
double mHeight
 Height of bars/lines.
QgsScaleBarStylemStyle
 Scalebar style.
double mLabelBarSpace
 Space between bar and Text labels.
double mBoxContentSpace
 Space between content and item box.
double mSegmentMillimeters
 Width of a segment (in mm)

Detailed Description

A scale bar item that can be added to a map composition.

Definition at line 28 of file qgscomposerscalebar.h.


Constructor & Destructor Documentation

Definition at line 31 of file qgscomposerscalebar.cpp.

References applyDefaultSettings(), and applyDefaultSize().

Definition at line 37 of file qgscomposerscalebar.cpp.

References mStyle.


Member Function Documentation

Sets box size suitable to content.

Definition at line 154 of file qgscomposerscalebar.cpp.

References QgsScaleBarStyle::calculateBoxSize(), mStyle, and QgsComposerItem::setSceneRect().

Referenced by applyDefaultSize(), setFont(), and update().

Apply default size (scale bar 1/5 of map item width)

Note:
this method was added in version 1.7

Definition at line 136 of file qgscomposerscalebar.cpp.

References adjustBoxSize(), QgsComposerMap::extent(), mComposerMap, mNumSegments, mNumUnitsPerSegment, refreshSegmentMillimeters(), and QgsRectangle::width().

Referenced by QgsComposerView::addComposerScaleBar(), and QgsComposerScaleBar().

double QgsComposerScaleBar::boxContentSpace ( ) const [inline]
QBrush QgsComposerScaleBar::brush ( ) const [inline]

Definition at line 74 of file qgscomposerscalebar.h.

Referenced by readXML(), and QgsNumericScaleBarStyle::scaleText().

Returns string of first label (important for drawing, labeling, size calculation.

Definition at line 246 of file qgscomposerscalebar.cpp.

References mNumMapUnitsPerScaleBarUnit, mNumSegmentsLeft, and mNumUnitsPerSegment.

Referenced by QgsScaleBarStyle::calculateBoxSize(), QgsScaleBarStyle::drawLabels(), and paint().

QFont QgsComposerScaleBar::font ( ) const
double QgsComposerScaleBar::height ( ) const [inline]

Sets mCompositionMap to 0 if the map is deleted.

Definition at line 89 of file qgscomposerscalebar.cpp.

References mComposerMap, and updateSegmentSize().

Referenced by readXML(), and setComposerMap().

double QgsComposerScaleBar::labelBarSpace ( ) const [inline]
int QgsComposerScaleBar::numSegments ( ) const [inline]

Definition at line 45 of file qgscomposerscalebar.h.

Referenced by QgsScaleBarStyle::calculateBoxSize().

int QgsComposerScaleBar::numSegmentsLeft ( ) const [inline]

Definition at line 48 of file qgscomposerscalebar.h.

Referenced by QgsScaleBarStyle::drawLabels().

double QgsComposerScaleBar::numUnitsPerSegment ( ) const [inline]
void QgsComposerScaleBar::paint ( QPainter *  painter,
const QStyleOptionGraphicsItem *  itemStyle,
QWidget *  pWidget 
)
QPen QgsComposerScaleBar::pen ( ) const [inline]
bool QgsComposerScaleBar::readXML ( const QDomElement &  itemElem,
const QDomDocument &  doc 
) [virtual]

Calculates with of a segment in mm and stores it in mSegmentMillimeters.

Definition at line 96 of file qgscomposerscalebar.cpp.

References QgsComposerMap::extent(), mComposerMap, mNumUnitsPerSegment, mSegmentMillimeters, and QgsRectangle::width().

Referenced by applyDefaultSize(), readXML(), setComposerMap(), setNumUnitsPerSegment(), and updateSegmentSize().

double QgsComposerScaleBar::segmentMillimeters ( ) const [inline]
void QgsComposerScaleBar::segmentPositions ( QList< QPair< double, double > > &  posWidthList) const

Returns the x - positions of the segment borders (in item coordinates) and the width of the segment.

Definition at line 177 of file qgscomposerscalebar.cpp.

References mBoxContentSpace, mNumSegments, mNumSegmentsLeft, mPen, and mSegmentMillimeters.

Referenced by QgsScaleBarStyle::calculateBoxSize(), QgsDoubleBoxScaleBarStyle::draw(), QgsSingleBoxScaleBarStyle::draw(), QgsTicksScaleBarStyle::draw(), and QgsScaleBarStyle::drawLabels().

void QgsComposerScaleBar::setBoxContentSpace ( double  space) [inline]

Definition at line 80 of file qgscomposerscalebar.h.

void QgsComposerScaleBar::setBrush ( const QBrush &  brush) [inline]

Definition at line 68 of file qgscomposerscalebar.h.

void QgsComposerScaleBar::setFont ( const QFont &  font)

Definition at line 263 of file qgscomposerscalebar.cpp.

References adjustBoxSize(), font(), mFont, and update().

void QgsComposerScaleBar::setHeight ( double  h) [inline]

Definition at line 71 of file qgscomposerscalebar.h.

void QgsComposerScaleBar::setLabelBarSpace ( double  space) [inline]

Definition at line 77 of file qgscomposerscalebar.h.

Definition at line 55 of file qgscomposerscalebar.h.

void QgsComposerScaleBar::setNumSegments ( int  nSegments) [inline]

Definition at line 46 of file qgscomposerscalebar.h.

void QgsComposerScaleBar::setNumSegmentsLeft ( int  nSegmentsLeft) [inline]

Definition at line 49 of file qgscomposerscalebar.h.

Definition at line 66 of file qgscomposerscalebar.cpp.

References mNumUnitsPerSegment, and refreshSegmentMillimeters().

void QgsComposerScaleBar::setPen ( const QPen &  pen) [inline]

Definition at line 65 of file qgscomposerscalebar.h.

void QgsComposerScaleBar::setStyle ( const QString &  styleName)

Sets style by name.

Parameters:
styleName(untranslated) style name. Possibilities are: 'Single Box', 'Double Box', 'Line Ticks Middle', 'Line Ticks Down', 'Line Ticks Up', 'Numeric'

Definition at line 197 of file qgscomposerscalebar.cpp.

References mStyle, QgsTicksScaleBarStyle::setTickPosition(), QgsTicksScaleBarStyle::TicksDown, QgsTicksScaleBarStyle::TicksMiddle, and QgsTicksScaleBarStyle::TicksUp.

Referenced by readXML().

void QgsComposerScaleBar::setUnitLabeling ( const QString &  label) [inline]

Definition at line 58 of file qgscomposerscalebar.h.

QString QgsComposerScaleBar::style ( ) const

Returns style name.

Definition at line 234 of file qgscomposerscalebar.cpp.

References mStyle, and QgsScaleBarStyle::name().

virtual int QgsComposerScaleBar::type ( ) const [inline, virtual]

return correct graphics item type.

Added in v1.7

Reimplemented from QgsComposerItem.

Definition at line 39 of file qgscomposerscalebar.h.

References QgsComposerItem::ComposerScaleBar.

QString QgsComposerScaleBar::unitLabeling ( ) const [inline]

Adjusts box size and calls QgsComposerItem::update()

Definition at line 165 of file qgscomposerscalebar.cpp.

References adjustBoxSize().

Referenced by setFont(), and updateSegmentSize().

Definition at line 171 of file qgscomposerscalebar.cpp.

References refreshSegmentMillimeters(), and update().

Referenced by invalidateCurrentMap(), readXML(), and setComposerMap().

bool QgsComposerScaleBar::writeXML ( QDomElement &  elem,
QDomDocument &  doc 
) const [virtual]

stores state in Dom element

Parameters:
elemis Dom element corresponding to 'Composer' tag
docDom document

Implements QgsComposerItem.

Definition at line 270 of file qgscomposerscalebar.cpp.

References QgsComposerItem::_writeXML(), QgsComposerMap::id(), mBoxContentSpace, mBrush, mComposerMap, mFont, mHeight, mLabelBarSpace, mNumMapUnitsPerScaleBarUnit, mNumSegments, mNumSegmentsLeft, mNumUnitsPerSegment, mPen, mSegmentMillimeters, mStyle, mUnitLabeling, and QgsScaleBarStyle::name().


Member Data Documentation

Space between content and item box.

Definition at line 157 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), readXML(), segmentPositions(), and writeXML().

QBrush QgsComposerScaleBar::mBrush [protected]

Fill.

Definition at line 147 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), and writeXML().

Reference to composer map object.

Definition at line 130 of file qgscomposerscalebar.h.

Referenced by applyDefaultSize(), invalidateCurrentMap(), readXML(), refreshSegmentMillimeters(), setComposerMap(), and writeXML().

QFont QgsComposerScaleBar::mFont [protected]

Font.

Definition at line 143 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), font(), paint(), readXML(), setFont(), and writeXML().

double QgsComposerScaleBar::mHeight [protected]

Height of bars/lines.

Definition at line 149 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), readXML(), and writeXML().

Space between bar and Text labels.

Definition at line 154 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), readXML(), and writeXML().

Number of map units per scale bar units (e.g.

1000 to have km for a map with m units)

Definition at line 138 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), firstLabelString(), readXML(), and writeXML().

Number of segments on right side.

Definition at line 132 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), applyDefaultSize(), readXML(), segmentPositions(), and writeXML().

Number of segments on left side.

Definition at line 134 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), firstLabelString(), readXML(), segmentPositions(), and writeXML().

Size of a segment (in map units)

Definition at line 136 of file qgscomposerscalebar.h.

Referenced by applyDefaultSize(), firstLabelString(), readXML(), refreshSegmentMillimeters(), setNumUnitsPerSegment(), and writeXML().

QPen QgsComposerScaleBar::mPen [protected]

Outline.

Definition at line 145 of file qgscomposerscalebar.h.

Referenced by applyDefaultSettings(), readXML(), segmentPositions(), and writeXML().

Width of a segment (in mm)

Definition at line 160 of file qgscomposerscalebar.h.

Referenced by readXML(), refreshSegmentMillimeters(), segmentPositions(), and writeXML().

Labeling of map units.

Definition at line 141 of file qgscomposerscalebar.h.

Referenced by readXML(), and writeXML().


The documentation for this class was generated from the following files:
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