QGIS API Documentation  2.18.21-Las Palmas (9fba24a)
Public Slots | Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
QgsHistogramWidget Class Reference

Graphical histogram for displaying distributions of field values. More...

#include <qgshistogramwidget.h>

Inheritance diagram for QgsHistogramWidget:
Inheritance graph
[legend]

Public Slots

void refresh ()
 Redraws the histogram. More...
 
void refreshValues ()
 Refreshes the values for the histogram by fetching them from the layer. More...
 
void setLayer (QgsVectorLayer *layer)
 Sets the vector layer associated with the histogram. More...
 
void setSourceFieldExp (const QString &fieldOrExp)
 Sets the source field or expression to use for values in the histogram. More...
 

Public Member Functions

 QgsHistogramWidget (QWidget *parent=nullptr, QgsVectorLayer *layer=nullptr, const QString &fieldOrExp=QString())
 QgsHistogramWidget constructor. More...
 
 ~QgsHistogramWidget ()
 
QBrush brush () const
 Returns the brush used when drawing histogram bars. More...
 
QgsRangeList graduatedRanges () const
 Returns the graduated ranges associated with the histogram. More...
 
QgsVectorLayerlayer ()
 Returns the layer currently associated with the widget. More...
 
QPen pen () const
 Returns the pen used when drawing histogram bars. More...
 
void setBrush (const QBrush &brush)
 Sets the brush used for drawing histogram bars. More...
 
void setGraduatedRanges (const QgsRangeList &ranges)
 Sets the graduated ranges associated with the histogram. More...
 
void setPen (const QPen &pen)
 Sets the pen to use when drawing histogram bars. More...
 
void setXAxisTitle (const QString &title)
 Sets the title for the histogram's x-axis. More...
 
void setYAxisTitle (const QString &title)
 Sets the title for the histogram's y-axis. More...
 
QString sourceFieldExp () const
 Returns the source field name or expression used to calculate values displayed in the histogram. More...
 
QString xAxisTitle () const
 Returns the title for the histogram's x-axis. More...
 
QString yAxisTitle () const
 Returns the title for the histogram's y-axis. More...
 
- Public Member Functions inherited from QWidget
 QWidget (QWidget *parent, QFlags< Qt::WindowType > f)
 
 QWidget (QWidget *parent, const char *name, QFlags< Qt::WindowType > f)
 
 ~QWidget ()
 
bool acceptDrops () const
 
QString accessibleDescription () const
 
QString accessibleName () const
 
QList< QAction * > actions () const
 
void activateWindow ()
 
void addAction (QAction *action)
 
void addActions (QList< QAction * > actions)
 
void adjustSize ()
 
bool autoFillBackground () const
 
Qt::BackgroundMode backgroundMode () const
 
QPoint backgroundOffset () const
 
BackgroundOrigin backgroundOrigin () const
 
QPalette::ColorRole backgroundRole () const
 
QSize baseSize () const
 
QString caption () const
 
QWidgetchildAt (int x, int y, bool includeThis) const
 
QWidgetchildAt (const QPoint &p, bool includeThis) const
 
QWidgetchildAt (int x, int y) const
 
QWidgetchildAt (const QPoint &p) const
 
QRect childrenRect () const
 
QRegion childrenRegion () const
 
void clearFocus ()
 
void clearMask ()
 
bool close (bool alsoDelete)
 
bool close ()
 
QColorGroup colorGroup () const
 
void constPolish () const
 
QMargins contentsMargins () const
 
QRect contentsRect () const
 
Qt::ContextMenuPolicy contextMenuPolicy () const
 
QCursor cursor () const
 
void customContextMenuRequested (const QPoint &pos)
 
void drawText (const QPoint &p, const QString &s)
 
void drawText (int x, int y, const QString &s)
 
WId effectiveWinId () const
 
void ensurePolished () const
 
void erase ()
 
void erase (const QRect &rect)
 
void erase (const QRegion &rgn)
 
void erase (int x, int y, int w, int h)
 
Qt::FocusPolicy focusPolicy () const
 
QWidgetfocusProxy () const
 
QWidgetfocusWidget () const
 
const QFontfont () const
 
QFontInfo fontInfo () const
 
QFontMetrics fontMetrics () const
 
QPalette::ColorRole foregroundRole () const
 
QRect frameGeometry () const
 
QSize frameSize () const
 
const QRectgeometry () const
 
void getContentsMargins (int *left, int *top, int *right, int *bottom) const
 
virtual HDC getDC () const
 
void grabGesture (Qt::GestureType gesture, QFlags< Qt::GestureFlag > flags)
 
void grabKeyboard ()
 
void grabMouse ()
 
void grabMouse (const QCursor &cursor)
 
int grabShortcut (const QKeySequence &key, Qt::ShortcutContext context)
 
QGraphicsEffectgraphicsEffect () const
 
QGraphicsProxyWidgetgraphicsProxyWidget () const
 
bool hasEditFocus () const
 
bool hasFocus () const
 
bool hasMouse () const
 
bool hasMouseTracking () const
 
int height () const
 
virtual int heightForWidth (int w) const
 
void hide ()
 
const QPixmapicon () const
 
void iconify ()
 
QString iconText () const
 
QInputContextinputContext ()
 
Qt::InputMethodHints inputMethodHints () const
 
virtual QVariant inputMethodQuery (Qt::InputMethodQuery query) const
 
void insertAction (QAction *before, QAction *action)
 
void insertActions (QAction *before, QList< QAction * > actions)
 
bool isActiveWindow () const
 
bool isAncestorOf (const QWidget *child) const
 
bool isDesktop () const
 
bool isDialog () const
 
bool isEnabled () const
 
bool isEnabledTo (QWidget *ancestor) const
 
bool isEnabledToTLW () const
 
bool isFullScreen () const
 
bool isHidden () const
 
bool isInputMethodEnabled () const
 
bool isMaximized () const
 
bool isMinimized () const
 
bool isModal () const
 
bool isPopup () const
 
bool isShown () const
 
bool isTopLevel () const
 
bool isUpdatesEnabled () const
 
bool isVisible () const
 
bool isVisibleTo (QWidget *ancestor) const
 
bool isVisibleToTLW () const
 
bool isWindow () const
 
bool isWindowModified () const
 
QLayoutlayout () const
 
Qt::LayoutDirection layoutDirection () const
 
QLocale locale () const
 
void lower ()
 
Qt::HANDLE macCGHandle () const
 
Qt::HANDLE macQDHandle () const
 
QPoint mapFrom (QWidget *parent, const QPoint &pos) const
 
QPoint mapFromGlobal (const QPoint &pos) const
 
QPoint mapFromParent (const QPoint &pos) const
 
QPoint mapTo (QWidget *parent, const QPoint &pos) const
 
QPoint mapToGlobal (const QPoint &pos) const
 
QPoint mapToParent (const QPoint &pos) const
 
QRegion mask () const
 
int maximumHeight () const
 
QSize maximumSize () const
 
int maximumWidth () const
 
int minimumHeight () const
 
QSize minimumSize () const
 
virtual QSize minimumSizeHint () const
 
int minimumWidth () const
 
void move (int x, int y)
 
void move (const QPoint &)
 
QWidgetnativeParentWidget () const
 
QWidgetnextInFocusChain () const
 
QRect normalGeometry () const
 
void overrideWindowFlags (QFlags< Qt::WindowType > flags)
 
bool ownCursor () const
 
bool ownFont () const
 
bool ownPalette () const
 
virtual QPaintEnginepaintEngine () const
 
const QPalettepalette () const
 
QWidgetparentWidget (bool sameWindow) const
 
QWidgetparentWidget () const
 
QPlatformWindow * platformWindow () const
 
QPlatformWindowFormat platformWindowFormat () const
 
void polish ()
 
QPoint pos () const
 
QWidgetpreviousInFocusChain () const
 
void raise ()
 
void recreate (QWidget *parent, QFlags< Qt::WindowType > f, const QPoint &p, bool showIt)
 
QRect rect () const
 
virtual void releaseDC (HDC hdc) const
 
void releaseKeyboard ()
 
void releaseMouse ()
 
void releaseShortcut (int id)
 
void removeAction (QAction *action)
 
void render (QPaintDevice *target, const QPoint &targetOffset, const QRegion &sourceRegion, QFlags< QWidget::RenderFlag > renderFlags)
 
void render (QPainter *painter, const QPoint &targetOffset, const QRegion &sourceRegion, QFlags< QWidget::RenderFlag > renderFlags)
 
void repaint (int x, int y, int w, int h, bool b)
 
void repaint (const QRegion &rgn, bool b)
 
void repaint ()
 
void repaint (int x, int y, int w, int h)
 
void repaint (const QRegion &rgn)
 
void repaint (bool b)
 
void repaint (const QRect &rect)
 
void repaint (const QRect &r, bool b)
 
void reparent (QWidget *parent, QFlags< Qt::WindowType > f, const QPoint &p, bool showIt)
 
void reparent (QWidget *parent, const QPoint &p, bool showIt)
 
void resize (int w, int h)
 
void resize (const QSize &)
 
bool restoreGeometry (const QByteArray &geometry)
 
QByteArray saveGeometry () const
 
void scroll (int dx, int dy)
 
void scroll (int dx, int dy, const QRect &r)
 
void setAcceptDrops (bool on)
 
void setAccessibleDescription (const QString &description)
 
void setAccessibleName (const QString &name)
 
void setActiveWindow ()
 
void setAttribute (Qt::WidgetAttribute attribute, bool on)
 
void setAutoFillBackground (bool enabled)
 
void setBackgroundColor (const QColor &color)
 
void setBackgroundMode (Qt::BackgroundMode widgetBackground, Qt::BackgroundMode paletteBackground)
 
void setBackgroundOrigin (BackgroundOrigin background)
 
void setBackgroundPixmap (const QPixmap &pixmap)
 
void setBackgroundRole (QPalette::ColorRole role)
 
void setBaseSize (const QSize &)
 
void setBaseSize (int basew, int baseh)
 
void setCaption (const QString &c)
 
void setContentsMargins (int left, int top, int right, int bottom)
 
void setContentsMargins (const QMargins &margins)
 
void setContextMenuPolicy (Qt::ContextMenuPolicy policy)
 
void setCursor (const QCursor &)
 
void setDisabled (bool disable)
 
void setEditFocus (bool enable)
 
void setEnabled (bool)
 
void setEraseColor (const QColor &color)
 
void setErasePixmap (const QPixmap &pixmap)
 
void setFixedHeight (int h)
 
void setFixedSize (const QSize &s)
 
void setFixedSize (int w, int h)
 
void setFixedWidth (int w)
 
void setFocus (Qt::FocusReason reason)
 
void setFocus ()
 
void setFocusPolicy (Qt::FocusPolicy policy)
 
void setFocusProxy (QWidget *w)
 
void setFont (const QFont &)
 
void setFont (const QFont &f, bool b)
 
void setForegroundRole (QPalette::ColorRole role)
 
void setGeometry (int x, int y, int w, int h)
 
void setGeometry (const QRect &)
 
void setGraphicsEffect (QGraphicsEffect *effect)
 
void setHidden (bool hidden)
 
void setIcon (const QPixmap &i)
 
void setIconText (const QString &it)
 
void setInputContext (QInputContext *context)
 
void setInputMethodEnabled (bool enabled)
 
void setInputMethodHints (QFlags< Qt::InputMethodHint > hints)
 
void setKeyCompression (bool b)
 
void setLayout (QLayout *layout)
 
void setLayoutDirection (Qt::LayoutDirection direction)
 
void setLocale (const QLocale &locale)
 
void setMask (const QBitmap &bitmap)
 
void setMask (const QRegion &region)
 
void setMaximumHeight (int maxh)
 
void setMaximumSize (const QSize &)
 
void setMaximumSize (int maxw, int maxh)
 
void setMaximumWidth (int maxw)
 
void setMinimumHeight (int minh)
 
void setMinimumSize (int minw, int minh)
 
void setMinimumSize (const QSize &)
 
void setMinimumWidth (int minw)
 
void setMouseTracking (bool enable)
 
void setPalette (const QPalette &)
 
void setPalette (const QPalette &p, bool b)
 
void setPaletteBackgroundColor (const QColor &color)
 
void setPaletteBackgroundPixmap (const QPixmap &pixmap)
 
void setPaletteForegroundColor (const QColor &color)
 
void setParent (QWidget *parent)
 
void setParent (QWidget *parent, QFlags< Qt::WindowType > f)
 
void setPlatformWindow (QPlatformWindow *window)
 
void setPlatformWindowFormat (const QPlatformWindowFormat &format)
 
void setShortcutAutoRepeat (int id, bool enable)
 
void setShortcutEnabled (int id, bool enable)
 
void setShown (bool shown)
 
void setSizeIncrement (const QSize &)
 
void setSizeIncrement (int w, int h)
 
void setSizePolicy (QSizePolicy::Policy hor, QSizePolicy::Policy ver, bool hfw)
 
void setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)
 
void setSizePolicy (QSizePolicy)
 
void setStatusTip (const QString &)
 
void setStyle (QStyle *style)
 
QStylesetStyle (const QString &style)
 
void setStyleSheet (const QString &styleSheet)
 
void setToolTip (const QString &)
 
void setUpdatesEnabled (bool enable)
 
void setupUi (QWidget *widget)
 
virtual void setVisible (bool visible)
 
void setWhatsThis (const QString &)
 
void setWindowFilePath (const QString &filePath)
 
void setWindowFlags (QFlags< Qt::WindowType > type)
 
void setWindowIcon (const QIcon &icon)
 
void setWindowIconText (const QString &)
 
void setWindowModality (Qt::WindowModality windowModality)
 
void setWindowModified (bool)
 
void setWindowOpacity (qreal level)
 
void setWindowRole (const QString &role)
 
void setWindowState (QFlags< Qt::WindowState > windowState)
 
void setWindowSurface (QWindowSurface *surface)
 
void setWindowTitle (const QString &)
 
void show ()
 
void showFullScreen ()
 
void showMaximized ()
 
void showMinimized ()
 
void showNormal ()
 
QSize size () const
 
virtual QSize sizeHint () const
 
QSize sizeIncrement () const
 
QSizePolicy sizePolicy () const
 
void stackUnder (QWidget *w)
 
QString statusTip () const
 
QStylestyle () const
 
QString styleSheet () const
 
bool testAttribute (Qt::WidgetAttribute attribute) const
 
QString toolTip () const
 
QWidgettopLevelWidget () const
 
bool underMouse () const
 
void ungrabGesture (Qt::GestureType gesture)
 
void unsetCursor ()
 
void unsetFont ()
 
void unsetLayoutDirection ()
 
void unsetLocale ()
 
void unsetPalette ()
 
void update (const QRect &rect)
 
void update (const QRegion &rgn)
 
void update (int x, int y, int w, int h)
 
void update ()
 
void updateGeometry ()
 
bool updatesEnabled () const
 
QRect visibleRect () const
 
QRegion visibleRegion () const
 
QString whatsThis () const
 
int width () const
 
QWidgetwindow () const
 
QString windowFilePath () const
 
Qt::WindowFlags windowFlags () const
 
QIcon windowIcon () const
 
QString windowIconText () const
 
Qt::WindowModality windowModality () const
 
qreal windowOpacity () const
 
QString windowRole () const
 
Qt::WindowStates windowState () const
 
QWindowSurface * windowSurface () const
 
QString windowTitle () const
 
Qt::WindowType windowType () const
 
WId winId () const
 
int x () const
 
const QX11Infox11Info () const
 
Qt::HANDLE x11PictureHandle () const
 
int y () const
 
- Public Member Functions inherited from QObject
 QObject (QObject *parent)
 
 QObject (QObject *parent, const char *name)
 
virtual ~QObject ()
 
bool blockSignals (bool block)
 
QObjectchild (const char *objName, const char *inheritsClass, bool recursiveSearch) const
 
const QObjectList & children () const
 
const char * className () const
 
bool connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const
 
void deleteLater ()
 
void destroyed (QObject *obj)
 
bool disconnect (const QObject *receiver, const char *method)
 
bool disconnect (const char *signal, const QObject *receiver, const char *method)
 
void dumpObjectInfo ()
 
void dumpObjectTree ()
 
QList< QByteArraydynamicPropertyNames () const
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 
findChild (const QString &name) const
 
QList< T > findChildren (const QRegExp &regExp) const
 
QList< T > findChildren (const QString &name) const
 
bool inherits (const char *className) const
 
void insertChild (QObject *object)
 
void installEventFilter (QObject *filterObj)
 
bool isA (const char *className) const
 
bool isWidgetType () const
 
void killTimer (int id)
 
virtual const QMetaObjectmetaObject () const
 
void moveToThread (QThread *targetThread)
 
const char * name () const
 
const char * name (const char *defaultName) const
 
QString objectName () const
 
QObjectparent () const
 
QVariant property (const char *name) const
 
void removeChild (QObject *object)
 
void removeEventFilter (QObject *obj)
 
void setName (const char *name)
 
void setObjectName (const QString &name)
 
void setParent (QObject *parent)
 
bool setProperty (const char *name, const QVariant &value)
 
bool signalsBlocked () const
 
int startTimer (int interval)
 
QThreadthread () const
 
- Public Member Functions inherited from QPaintDevice
virtual ~QPaintDevice ()
 
int colorCount () const
 
int depth () const
 
int height () const
 
int heightMM () const
 
int logicalDpiX () const
 
int logicalDpiY () const
 
int numColors () const
 
virtual QPaintEnginepaintEngine () const=0
 
bool paintingActive () const
 
int physicalDpiX () const
 
int physicalDpiY () const
 
int width () const
 
int widthMM () const
 
int x11Cells () const
 
Qt::HANDLE x11Colormap () const
 
bool x11DefaultColormap () const
 
bool x11DefaultVisual () const
 
int x11Depth () const
 
Display * x11Display () const
 
int x11Screen () const
 
void * x11Visual () const
 

Protected Member Functions

virtual void drawHistogram ()
 Updates and redraws the histogram. More...
 
- Protected Member Functions inherited from QWidget
virtual void actionEvent (QActionEvent *event)
 
virtual void changeEvent (QEvent *event)
 
virtual void closeEvent (QCloseEvent *event)
 
virtual void contextMenuEvent (QContextMenuEvent *event)
 
void create (WId window, bool initializeWindow, bool destroyOldWindow)
 
void destroy (bool destroyWindow, bool destroySubWindows)
 
virtual void dragEnterEvent (QDragEnterEvent *event)
 
virtual void dragLeaveEvent (QDragLeaveEvent *event)
 
virtual void dragMoveEvent (QDragMoveEvent *event)
 
virtual void dropEvent (QDropEvent *event)
 
virtual void enterEvent (QEvent *event)
 
virtual bool event (QEvent *event)
 
virtual void focusInEvent (QFocusEvent *event)
 
bool focusNextChild ()
 
virtual bool focusNextPrevChild (bool next)
 
virtual void focusOutEvent (QFocusEvent *event)
 
bool focusPreviousChild ()
 
virtual void hideEvent (QHideEvent *event)
 
virtual void inputMethodEvent (QInputMethodEvent *event)
 
virtual void keyPressEvent (QKeyEvent *event)
 
virtual void keyReleaseEvent (QKeyEvent *event)
 
virtual void languageChange ()
 
virtual void leaveEvent (QEvent *event)
 
virtual bool macEvent (EventHandlerCallRef caller, EventRef event)
 
virtual int metric (PaintDeviceMetric m) const
 
virtual void mouseDoubleClickEvent (QMouseEvent *event)
 
virtual void mouseMoveEvent (QMouseEvent *event)
 
virtual void mousePressEvent (QMouseEvent *event)
 
virtual void mouseReleaseEvent (QMouseEvent *event)
 
virtual void moveEvent (QMoveEvent *event)
 
virtual void paintEvent (QPaintEvent *event)
 
virtual bool qwsEvent (QWSEvent *event)
 
void resetInputContext ()
 
virtual void resizeEvent (QResizeEvent *event)
 
virtual void showEvent (QShowEvent *event)
 
virtual void tabletEvent (QTabletEvent *event)
 
void updateMicroFocus ()
 
virtual void wheelEvent (QWheelEvent *event)
 
virtual bool winEvent (MSG *message, long *result)
 
virtual bool x11Event (XEvent *event)
 
- Protected Member Functions inherited from QObject
bool checkConnectArgs (const char *signal, const QObject *object, const char *method)
 
virtual void childEvent (QChildEvent *event)
 
virtual void connectNotify (const char *signal)
 
virtual void customEvent (QEvent *event)
 
virtual void disconnectNotify (const char *signal)
 
int receivers (const char *signal) const
 
QObjectsender () const
 
int senderSignalIndex () const
 
virtual void timerEvent (QTimerEvent *event)
 
- Protected Member Functions inherited from QPaintDevice
 QPaintDevice ()
 

Protected Attributes

QwtPlot * mPlot
 
QList< QwtPlotMarker *> mRangeMarkers
 
QgsRangeList mRanges
 

Additional Inherited Members

- Static Public Member Functions inherited from QWidget
QWidgetfind (WId id)
 
QWidgetkeyboardGrabber ()
 
QWidgetmouseGrabber ()
 
void setTabOrder (QWidget *first, QWidget *second)
 
QWidgetMapper * wmapper ()
 
- Static Public Member Functions inherited from QObject
bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
 
bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
 
bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
 
bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
 
QString tr (const char *sourceText, const char *disambiguation, int n)
 
QString trUtf8 (const char *sourceText, const char *disambiguation, int n)
 
- Static Public Member Functions inherited from QPaintDevice
int x11AppCells (int screen)
 
Qt::HANDLE x11AppColormap (int screen)
 
bool x11AppDefaultColormap (int screen)
 
bool x11AppDefaultVisual (int screen)
 
int x11AppDepth (int screen)
 
Display * x11AppDisplay ()
 
int x11AppDpiX (int screen)
 
int x11AppDpiY (int screen)
 
Qt::HANDLE x11AppRootWindow (int screen)
 
int x11AppScreen ()
 
void * x11AppVisual (int screen)
 
void x11SetAppDpiX (int dpi, int screen)
 
void x11SetAppDpiY (int dpi, int screen)
 
- Public Attributes inherited from QWidget
typedef RenderFlags
 
- Static Protected Member Functions inherited from QObject
QByteArray normalizeSignalSlot (const char *signalSlot)
 
- Properties inherited from QWidget
 acceptDrops
 
 accessibleDescription
 
 accessibleName
 
 autoFillBackground
 
 baseSize
 
 childrenRect
 
 childrenRegion
 
 contextMenuPolicy
 
 cursor
 
 enabled
 
 focus
 
 focusPolicy
 
 font
 
 frameGeometry
 
 frameSize
 
 fullScreen
 
 geometry
 
 height
 
 inputMethodHints
 
 isActiveWindow
 
 layoutDirection
 
 locale
 
 maximized
 
 maximumHeight
 
 maximumSize
 
 maximumWidth
 
 minimized
 
 minimumHeight
 
 minimumSize
 
 minimumSizeHint
 
 minimumWidth
 
 modal
 
 mouseTracking
 
 normalGeometry
 
 palette
 
 pos
 
 rect
 
 size
 
 sizeHint
 
 sizeIncrement
 
 sizePolicy
 
 statusTip
 
 styleSheet
 
 toolTip
 
 updatesEnabled
 
 visible
 
 whatsThis
 
 width
 
 windowFilePath
 
 windowFlags
 
 windowIcon
 
 windowIconText
 
 windowModality
 
 windowModified
 
 windowOpacity
 
 windowTitle
 
 x
 
 y
 
- Properties inherited from QObject
 objectName
 

Detailed Description

Graphical histogram for displaying distributions of field values.

Note
Added in version 2.9

Definition at line 49 of file qgshistogramwidget.h.

Constructor & Destructor Documentation

◆ QgsHistogramWidget()

QgsHistogramWidget::QgsHistogramWidget ( QWidget parent = nullptr,
QgsVectorLayer layer = nullptr,
const QString fieldOrExp = QString() 
)

QgsHistogramWidget constructor.

If layer and fieldOrExp are specified then the histogram will be initially populated with the corresponding values.

Parameters
parentparent widget
layersource vector layer
fieldOrExpfield name or expression string

Definition at line 45 of file qgshistogramwidget.cpp.

◆ ~QgsHistogramWidget()

QgsHistogramWidget::~QgsHistogramWidget ( )

Definition at line 86 of file qgshistogramwidget.cpp.

Member Function Documentation

◆ brush()

QBrush QgsHistogramWidget::brush ( ) const
inline

Returns the brush used when drawing histogram bars.

See also
setBrush
pen

Definition at line 105 of file qgshistogramwidget.h.

◆ drawHistogram()

void QgsHistogramWidget::drawHistogram ( )
protectedvirtual

Updates and redraws the histogram.

Reimplemented in QgsGraduatedHistogramWidget.

Definition at line 178 of file qgshistogramwidget.cpp.

◆ graduatedRanges()

QgsRangeList QgsHistogramWidget::graduatedRanges ( ) const
inline

Returns the graduated ranges associated with the histogram.

If set, the ranges will be used to color the histogram bars and for showing vertical dividers at the histogram breaks.

Returns
graduated range list
See also
setGraduatedRanges

Definition at line 119 of file qgshistogramwidget.h.

◆ layer()

QgsVectorLayer* QgsHistogramWidget::layer ( )
inline

Returns the layer currently associated with the widget.

See also
setLayer
sourceFieldExp

Definition at line 69 of file qgshistogramwidget.h.

◆ pen()

QPen QgsHistogramWidget::pen ( ) const
inline

Returns the pen used when drawing histogram bars.

See also
setPen
brush

Definition at line 91 of file qgshistogramwidget.h.

◆ refresh

void QgsHistogramWidget::refresh ( )
slot

Redraws the histogram.

Calling this slot does not update the values for the histogram, use refreshValues to do this.

Definition at line 143 of file qgshistogramwidget.cpp.

◆ refreshValues

void QgsHistogramWidget::refreshValues ( )
slot

Refreshes the values for the histogram by fetching them from the layer.

Definition at line 104 of file qgshistogramwidget.cpp.

◆ setBrush()

void QgsHistogramWidget::setBrush ( const QBrush brush)
inline

Sets the brush used for drawing histogram bars.

If ranges have been set using setGraduatedRanges then the pen and brush will have no effect.

Parameters
brushhistogram brush
See also
brush
setPen

Definition at line 99 of file qgshistogramwidget.h.

◆ setGraduatedRanges()

void QgsHistogramWidget::setGraduatedRanges ( const QgsRangeList ranges)

Sets the graduated ranges associated with the histogram.

If set, the ranges will be used to color the histogram bars and for showing vertical dividers at the histogram breaks.

Parameters
rangesgraduated range list
See also
graduatedRanges

Definition at line 98 of file qgshistogramwidget.cpp.

◆ setLayer

void QgsHistogramWidget::setLayer ( QgsVectorLayer layer)
slot

Sets the vector layer associated with the histogram.

Parameters
layersource vector layer
See also
setSourceFieldExp

Definition at line 148 of file qgshistogramwidget.cpp.

◆ setPen()

void QgsHistogramWidget::setPen ( const QPen pen)
inline

Sets the pen to use when drawing histogram bars.

If set to Qt::NoPen then the pen will be automatically calculated. If ranges have been set using setGraduatedRanges then the pen and brush will have no effect.

Parameters
penhistogram pen
See also
pen
setBrush

Definition at line 85 of file qgshistogramwidget.h.

◆ setSourceFieldExp

void QgsHistogramWidget::setSourceFieldExp ( const QString fieldOrExp)
slot

Sets the source field or expression to use for values in the histogram.

Parameters
fieldOrExpfield name or expression string
See also
setLayer

Definition at line 169 of file qgshistogramwidget.cpp.

◆ setXAxisTitle()

void QgsHistogramWidget::setXAxisTitle ( const QString title)
inline

Sets the title for the histogram's x-axis.

Parameters
titlex-axis title, or empty string to remove title
See also
xAxisTitle
setYAxisTitle

Definition at line 132 of file qgshistogramwidget.h.

◆ setYAxisTitle()

void QgsHistogramWidget::setYAxisTitle ( const QString title)
inline

Sets the title for the histogram's y-axis.

Parameters
titley-axis title, or empty string to remove title
See also
yAxisTitle
setXAxisTitle

Definition at line 145 of file qgshistogramwidget.h.

◆ sourceFieldExp()

QString QgsHistogramWidget::sourceFieldExp ( ) const
inline

Returns the source field name or expression used to calculate values displayed in the histogram.

See also
setSourceFieldExp
layer

Definition at line 76 of file qgshistogramwidget.h.

◆ xAxisTitle()

QString QgsHistogramWidget::xAxisTitle ( ) const
inline

Returns the title for the histogram's x-axis.

See also
setXAxisTitle
yAxisTitle

Definition at line 125 of file qgshistogramwidget.h.

◆ yAxisTitle()

QString QgsHistogramWidget::yAxisTitle ( ) const
inline

Returns the title for the histogram's y-axis.

See also
setYAxisTitle
xAxisTitle

Definition at line 138 of file qgshistogramwidget.h.

Member Data Documentation

◆ mPlot

QwtPlot* QgsHistogramWidget::mPlot
protected

Definition at line 176 of file qgshistogramwidget.h.

◆ mRangeMarkers

QList< QwtPlotMarker* > QgsHistogramWidget::mRangeMarkers
protected

Definition at line 178 of file qgshistogramwidget.h.

◆ mRanges

QgsRangeList QgsHistogramWidget::mRanges
protected

Definition at line 177 of file qgshistogramwidget.h.


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