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[ui] Add a set to null / clear current symbol action to the symbol button

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This commit is contained in:
Mathieu Pellerin 2022-05-09 12:31:36 +07:00
parent 3ed4b3c3ec
commit 0a53f86206
3 changed files with 109 additions and 0 deletions
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46
python/gui/auto_generated/qgssymbolbutton.sip.in
View File

@ -179,6 +179,52 @@ Pastes a color from the clipboard to the symbol. If clipboard does not contain a
color or string representation of a color, then no change is applied.
.. seealso:: :py:func:`copyColor`
%End
void setShowNull( bool showNull );
%Docstring
Sets whether a set to null (clear) option is shown in the button's drop-down menu.
:param showNull: set to ``True`` to show a null option
.. seealso:: :py:func:`showNull`
.. seealso:: :py:func:`isNull`
.. versionadded:: 3.26
%End
bool showNull() const;
%Docstring
Returns whether the set to null (clear) option is shown in the button's drop-down menu.
.. seealso:: :py:func:`setShowNull`
.. seealso:: :py:func:`isNull`
.. versionadded:: 3.26
%End
bool isNull() const;
%Docstring
Returns ``True`` if the current color is null.
.. seealso:: :py:func:`setShowNull`
.. seealso:: :py:func:`showNull`
.. versionadded:: 3.26
%End
void setToNull();
%Docstring
Sets symbol to to null.
.. seealso:: :py:func:`setShowNull`
.. seealso:: :py:func:`showNull`
.. versionadded:: 3.26
%End
signals:

28
src/gui/qgssymbolbutton.cpp
View File

@ -421,6 +421,14 @@ void QgsSymbolButton::prepareMenu()
mMenu->addAction( pasteSymbolAction );
connect( pasteSymbolAction, &QAction::triggered, this, &QgsSymbolButton::pasteSymbol );
if ( mShowNull )
{
QAction *nullAction = new QAction( tr( "Clear Current Symbol" ), this );
nullAction->setEnabled( !isNull() );
mMenu->addAction( nullAction );
connect( nullAction, &QAction::triggered, this, &QgsSymbolButton::setToNull );
}
mMenu->addSeparator();
QgsColorWheel *colorWheel = new QgsColorWheel( mMenu );
@ -717,3 +725,23 @@ QgsSymbol *QgsSymbolButton::symbol()
{
return mSymbol.get();
}
void QgsSymbolButton::setShowNull( bool showNull )
{
mShowNull = showNull;
}
bool QgsSymbolButton::showNull() const
{
return mShowNull;
}
bool QgsSymbolButton::isNull() const
{
return !mSymbol;
}
void QgsSymbolButton::setToNull()
{
setSymbol( nullptr );
}

35
src/gui/qgssymbolbutton.h
View File

@ -204,6 +204,39 @@ class GUI_EXPORT QgsSymbolButton : public QToolButton
*/
void pasteColor();
/**
* Sets whether a set to null (clear) option is shown in the button's drop-down menu.
* \param showNull set to TRUE to show a null option
* \see showNull()
* \see isNull()
* \since QGIS 3.26
*/
void setShowNull( bool showNull );
/**
* Returns whether the set to null (clear) option is shown in the button's drop-down menu.
* \see setShowNull()
* \see isNull()
* \since QGIS 3.26
*/
bool showNull() const;
/**
* Returns TRUE if the current color is null.
* \see setShowNull()
* \see showNull()
* \since QGIS 3.26
*/
bool isNull() const;
/**
* Sets symbol to to null.
* \see setShowNull()
* \see showNull()
* \since QGIS 3.26
*/
void setToNull();
signals:
/**
@ -277,6 +310,8 @@ class GUI_EXPORT QgsSymbolButton : public QToolButton
bool mPickingColor = false;
bool mShowNull = false;
/**
* Regenerates the text preview. If \a color is specified, a temporary color preview
* is shown instead.