A button for creating and modifying QgsSymbol settings. More...

#include <qgssymbolbutton.h>

Inheritance diagram for QgsSymbolButton:

Public Slots
void	copyColor ()
	Copies the current symbol color to the clipboard.

void	copySymbol ()
	Copies the current symbol to the clipboard.

void	pasteColor ()
	Pastes a color from the clipboard to the symbol.

void	pasteSymbol ()
	Pastes a symbol from the clipboard.

void	setColor (const QColor &color)
	Sets the current color for the symbol.

void	setShowNull (bool showNull)
	Sets whether a set to null (clear) option is shown in the button's drop-down menu.

void	setSymbol (QgsSymbol *symbol)
	Sets the symbol for the button.

void	setToDefaultSymbol ()
	Sets symbol to the button's default symbol, if set.

void	setToNull ()
	Sets symbol to to null.

Signals
void	changed ()
	Emitted when the symbol's settings are changed.

Public Member Functions
	QgsSymbolButton (QWidget *parent=nullptr, const QString &dialogTitle=QString())
	Construct a new symbol button.

	~QgsSymbolButton ()

template<class SymbolType >
SymbolType *	clonedSymbol ()
	Returns a clone of the current symbol (as the specified template type) defined by the button.

const QgsSymbol *	defaultSymbol () const
	Returns the default symbol for the button, which is shown in the button's drop-down menu for the "default symbol" option.

QString	dialogTitle () const
	Returns the title for the symbol settings dialog window.

bool	isNull () const
	Returns `true` if the current symbol is null.

QgsVectorLayer *	layer () const
	Returns the layer associated with the widget.

QgsMapCanvas *	mapCanvas () const
	Returns the map canvas associated with the widget.

QgsMessageBar *	messageBar () const
	Returns the message bar associated with the widget.

QSize	minimumSizeHint () const override

void	registerExpressionContextGenerator (QgsExpressionContextGenerator *generator)
	Register an expression context generator class that will be used to retrieve an expression context for the button when required.

void	setDefaultSymbol (QgsSymbol *symbol)
	Sets the default symbol for the button, which is shown in the button's drop-down menu for the "default symbol" option.

void	setDialogTitle (const QString &title)
	Sets the title for the symbol settings dialog window.

void	setLayer (QgsVectorLayer *layer)
	Sets a layer to associate with the widget.

void	setMapCanvas (QgsMapCanvas *canvas)
	Sets a map canvas to associate with the widget.

void	setMessageBar (QgsMessageBar *bar)
	Sets the message bar associated with the widget.

void	setSymbolType (Qgis::SymbolType type)
	Sets the symbol type which the button requires.

bool	showNull () const
	Returns whether the set to null (clear) option is shown in the button's drop-down menu.

QSize	sizeHint () const override

QgsSymbol *	symbol ()
	Returns the current symbol defined by the button.

Qgis::SymbolType	symbolType () const
	Returns the symbol type which the button requires.

Protected Member Functions
void	changeEvent (QEvent *e) override

void	dragEnterEvent (QDragEnterEvent *e) override

void	dragLeaveEvent (QDragLeaveEvent *e) override

void	dropEvent (QDropEvent *e) override

void	keyPressEvent (QKeyEvent *e) override

void	mouseMoveEvent (QMouseEvent *e) override

void	mousePressEvent (QMouseEvent *e) override

void	mouseReleaseEvent (QMouseEvent *e) override

void	resizeEvent (QResizeEvent *event) override

void	showEvent (QShowEvent *e) override

void	wheelEvent (QWheelEvent *event) override

Properties
QString	dialogTitle

Detailed Description

A button for creating and modifying QgsSymbol settings.

The button shows a preview icon for the current symbol, and will open a detailed symbol editor dialog (or panel widget) when clicked.

Definition at line 44 of file qgssymbolbutton.h.

Constructor & Destructor Documentation

◆ QgsSymbolButton()

QgsSymbolButton::QgsSymbolButton	(	QWidget *	parent = `nullptr`,
		const QString &	dialogTitle = `QString()`
	)

Construct a new symbol button.

Use dialogTitle string to define the title to show in the symbol settings dialog.

Definition at line 41 of file qgssymbolbutton.cpp.

◆ ~QgsSymbolButton()

QgsSymbolButton::~QgsSymbolButton ( )

default

Member Function Documentation

◆ changed

void QgsSymbolButton::changed ( )

signal

Emitted when the symbol's settings are changed.

See also: symbol(); setSymbol()

◆ changeEvent()

void QgsSymbolButton::changeEvent ( QEvent * e )

overrideprotected

Definition at line 609 of file qgssymbolbutton.cpp.

◆ clonedSymbol()

template<class SymbolType >

SymbolType * QgsSymbolButton::clonedSymbol ( )

inline

Returns a clone of the current symbol (as the specified template type) defined by the button.

See also: setSymbol(); changed()

Note: Not available in Python bindings.

Definition at line 101 of file qgssymbolbutton.h.

◆ copyColor

void QgsSymbolButton::copyColor ( )

slot

Copies the current symbol color to the clipboard.

See also: pasteColor()

Definition at line 280 of file qgssymbolbutton.cpp.

◆ copySymbol

void QgsSymbolButton::copySymbol ( )

slot

Copies the current symbol to the clipboard.

See also: pasteSymbol()

Definition at line 268 of file qgssymbolbutton.cpp.

◆ defaultSymbol()

const QgsSymbol * QgsSymbolButton::defaultSymbol ( ) const

Returns the default symbol for the button, which is shown in the button's drop-down menu for the "default symbol" option.

Returns: default symbol for the button. Returns nullptr if the default symbol option is disabled.

See also: setDefaultSymbol()

Since: QGIS 3.30

Definition at line 239 of file qgssymbolbutton.cpp.

◆ dialogTitle()

QString QgsSymbolButton::dialogTitle ( ) const

Returns the title for the symbol settings dialog window.

See also: setDialogTitle()

Definition at line 810 of file qgssymbolbutton.cpp.

◆ dragEnterEvent()

void QgsSymbolButton::dragEnterEvent ( QDragEnterEvent * e )

overrideprotected

Definition at line 377 of file qgssymbolbutton.cpp.

◆ dragLeaveEvent()

void QgsSymbolButton::dragLeaveEvent ( QDragLeaveEvent * e )

overrideprotected

Definition at line 393 of file qgssymbolbutton.cpp.

◆ dropEvent()

void QgsSymbolButton::dropEvent ( QDropEvent * e )

overrideprotected

Definition at line 400 of file qgssymbolbutton.cpp.

◆ isNull()

bool QgsSymbolButton::isNull ( ) const

Returns true if the current symbol is null.

See also: setShowNull(); showNull()

Since: QGIS 3.26

Definition at line 830 of file qgssymbolbutton.cpp.

◆ keyPressEvent()

void QgsSymbolButton::keyPressEvent ( QKeyEvent * e )

overrideprotected

Definition at line 364 of file qgssymbolbutton.cpp.

◆ layer()

QgsVectorLayer * QgsSymbolButton::layer ( ) const

Returns the layer associated with the widget.

See also: setLayer()

Definition at line 219 of file qgssymbolbutton.cpp.

◆ mapCanvas()

QgsMapCanvas * QgsSymbolButton::mapCanvas ( ) const

Returns the map canvas associated with the widget.

See also: setMapCanvas()

Definition at line 199 of file qgssymbolbutton.cpp.

◆ messageBar()

QgsMessageBar * QgsSymbolButton::messageBar ( ) const

Returns the message bar associated with the widget.

See also: setMessageBar()

Since: QGIS 3.6

Definition at line 214 of file qgssymbolbutton.cpp.

◆ minimumSizeHint()

QSize QgsSymbolButton::minimumSizeHint ( ) const

override

Definition at line 95 of file qgssymbolbutton.cpp.

◆ mouseMoveEvent()

void QgsSymbolButton::mouseMoveEvent ( QMouseEvent * e )

overrideprotected

Definition at line 318 of file qgssymbolbutton.cpp.

◆ mousePressEvent()

void QgsSymbolButton::mousePressEvent ( QMouseEvent * e )

overrideprotected

Definition at line 297 of file qgssymbolbutton.cpp.

◆ mouseReleaseEvent()

void QgsSymbolButton::mouseReleaseEvent ( QMouseEvent * e )

overrideprotected

Definition at line 351 of file qgssymbolbutton.cpp.

◆ pasteColor

void QgsSymbolButton::pasteColor ( )

slot

Pastes a color from the clipboard to the symbol.

If clipboard does not contain a valid color or string representation of a color, then no change is applied.

See also: copyColor()

Definition at line 285 of file qgssymbolbutton.cpp.

◆ pasteSymbol

void QgsSymbolButton::pasteSymbol ( )

slot

Pastes a symbol from the clipboard.

If clipboard does not contain a valid symbol then no change is applied.

See also: copySymbol()

Definition at line 273 of file qgssymbolbutton.cpp.

◆ registerExpressionContextGenerator()

void QgsSymbolButton::registerExpressionContextGenerator ( QgsExpressionContextGenerator * generator )

Register an expression context generator class that will be used to retrieve an expression context for the button when required.

Definition at line 229 of file qgssymbolbutton.cpp.

◆ resizeEvent()

void QgsSymbolButton::resizeEvent ( QResizeEvent * event )

overrideprotected

Definition at line 624 of file qgssymbolbutton.cpp.

◆ setColor

void QgsSymbolButton::setColor ( const QColor & color )

slot

Sets the current color for the symbol.

Will emit a changed() signal if the color is different to the previous symbol color.

Definition at line 252 of file qgssymbolbutton.cpp.

◆ setDefaultSymbol()

void QgsSymbolButton::setDefaultSymbol ( QgsSymbol * symbol )

Sets the default symbol for the button, which is shown in the button's drop-down menu for the "default symbol" option.

Parameters

symbol default symbol for the button. Set to nullptr to disable the default symbol option. Ownership of symbol is transferred to the button.

See also: defaultSymbol()

Since: QGIS 3.30

Definition at line 234 of file qgssymbolbutton.cpp.

◆ setDialogTitle()

void QgsSymbolButton::setDialogTitle ( const QString & title )

Sets the title for the symbol settings dialog window.

See also: dialogTitle()

Definition at line 805 of file qgssymbolbutton.cpp.

◆ setLayer()

void QgsSymbolButton::setLayer ( QgsVectorLayer * layer )

Sets a layer to associate with the widget.

This allows the widget to setup layer related settings within the symbol settings dialog, such as correctly populating data defined override buttons.

See also: layer()

Definition at line 224 of file qgssymbolbutton.cpp.

◆ setMapCanvas()

void QgsSymbolButton::setMapCanvas ( QgsMapCanvas * canvas )

Sets a map canvas to associate with the widget.

This allows the widget to fetch current settings from the map canvas, such as current scale.

See also: mapCanvas()

Definition at line 204 of file qgssymbolbutton.cpp.

◆ setMessageBar()

void QgsSymbolButton::setMessageBar ( QgsMessageBar * bar )

Sets the message bar associated with the widget.

This allows the widget to push feedback messages to the appropriate message bar.

See also: messageBar()

Since: QGIS 3.6

Definition at line 209 of file qgssymbolbutton.cpp.

◆ setShowNull

void QgsSymbolButton::setShowNull ( bool showNull )

slot

Sets whether a set to null (clear) option is shown in the button's drop-down menu.

Parameters

showNull set to true to show a null option

See also: showNull(); isNull()

Since: QGIS 3.26

Definition at line 820 of file qgssymbolbutton.cpp.

◆ setSymbol

void QgsSymbolButton::setSymbol ( QgsSymbol * symbol )

slot

Sets the symbol for the button.

Ownership of symbol is transferred to the button.

See also: symbol(); changed()

Definition at line 244 of file qgssymbolbutton.cpp.

◆ setSymbolType()

void QgsSymbolButton::setSymbolType ( Qgis::SymbolType type )

Sets the symbol type which the button requires.

If the type differs from the current symbol type, the symbol will be reset to a default symbol style of the new type.

See also: symbolType()

Definition at line 105 of file qgssymbolbutton.cpp.

◆ setToDefaultSymbol

void QgsSymbolButton::setToDefaultSymbol ( )

slot

Sets symbol to the button's default symbol, if set.

See also: setDefaultSymbol(); defaultSymbol(); setToNull()

Since: QGIS 3.30

Definition at line 840 of file qgssymbolbutton.cpp.

◆ setToNull

void QgsSymbolButton::setToNull ( )

slot

Sets symbol to to null.

See also: setShowNull(); setToDefaultSymbol(); showNull()

Since: QGIS 3.26

Definition at line 835 of file qgssymbolbutton.cpp.

◆ showEvent()

void QgsSymbolButton::showEvent ( QShowEvent * e )

overrideprotected

Definition at line 618 of file qgssymbolbutton.cpp.

◆ showNull()

bool QgsSymbolButton::showNull ( ) const

Returns whether the set to null (clear) option is shown in the button's drop-down menu.

See also: setShowNull(); isNull()

Since: QGIS 3.26

Definition at line 825 of file qgssymbolbutton.cpp.

◆ sizeHint()

QSize QgsSymbolButton::sizeHint ( ) const

override

Definition at line 100 of file qgssymbolbutton.cpp.

◆ symbol()

QgsSymbol * QgsSymbolButton::symbol ( )

Returns the current symbol defined by the button.

See also: setSymbol(); changed()

Definition at line 815 of file qgssymbolbutton.cpp.

◆ symbolType()

Qgis::SymbolType QgsSymbolButton::symbolType ( ) const

inline

Returns the symbol type which the button requires.

See also: setSymbolType()

Definition at line 74 of file qgssymbolbutton.h.

◆ wheelEvent()

void QgsSymbolButton::wheelEvent ( QWheelEvent * event )

overrideprotected

Definition at line 418 of file qgssymbolbutton.cpp.

Property Documentation

◆ dialogTitle

QString QgsSymbolButton::dialogTitle

readwrite

Definition at line 48 of file qgssymbolbutton.h.

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

/home/fischer/src/qgis-3.38/src/gui/qgssymbolbutton.h
/home/fischer/src/qgis-3.38/src/gui/qgssymbolbutton.cpp

Public Slots

Signals

Public Member Functions

Protected Member Functions

Properties

Detailed Description

Constructor & Destructor Documentation

◆ QgsSymbolButton()

◆ ~QgsSymbolButton()

Member Function Documentation

◆ changed

◆ changeEvent()

◆ clonedSymbol()

◆ copyColor

◆ copySymbol

◆ defaultSymbol()

◆ dialogTitle()

◆ dragEnterEvent()

◆ dragLeaveEvent()

◆ dropEvent()

◆ isNull()

◆ keyPressEvent()

◆ layer()

◆ mapCanvas()

◆ messageBar()

◆ minimumSizeHint()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ pasteColor

◆ pasteSymbol

◆ registerExpressionContextGenerator()

◆ resizeEvent()

◆ setColor

◆ setDefaultSymbol()

◆ setDialogTitle()

◆ setLayer()

◆ setMapCanvas()

◆ setMessageBar()

◆ setShowNull

◆ setSymbol

◆ setSymbolType()

◆ setToDefaultSymbol

◆ setToNull

◆ showEvent()

◆ showNull()

◆ sizeHint()

◆ symbol()

◆ symbolType()

◆ wheelEvent()

Property Documentation

◆ dialogTitle