QgsRatioLockButton Class Reference

A cross platform button subclass used to represent a locked / unlocked ratio state. More...

#include <qgsratiolockbutton.h>

Inheritance diagram for QgsRatioLockButton:

Signals
void	lockChanged (bool locked)
	Emitted whenever the lock state changes. More...

Public Member Functions
	QgsRatioLockButton (QWidget *parent=nullptr)
	Construct a new ratio lock button. More...
bool	locked () const
	Returns whether the button state is locked. More...
void	resetRatio ()
	Resets the current width/height ratio, taking the width and height from the current values of the width and height spin boxes. More...
void	setHeightSpinBox (QDoubleSpinBox *widget)
	Registers a spin box widget as the linked "height" spin box. More...
void	setLocked (bool locked)
	Sets whether the button state is locked. More...
void	setWidthSpinBox (QDoubleSpinBox *widget)
	Registers a spin box widget as the linked "width" spin box. More...

Protected Member Functions
void	changeEvent (QEvent *e) override
void	resizeEvent (QResizeEvent *event) override
void	showEvent (QShowEvent *e) override

Properties
bool	locked

Detailed Description

A cross platform button subclass used to represent a locked / unlocked ratio state.

Since

QGIS 3.0

Definition at line 34 of file qgsratiolockbutton.h.

Constructor & Destructor Documentation

QgsRatioLockButton::QgsRatioLockButton

(

QWidget *

parent = nullptr

)

Construct a new ratio lock button.

Use parent to attach a parent QWidget to the button.

Definition at line 25 of file qgsratiolockbutton.cpp.

Member Function Documentation

void QgsRatioLockButton::changeEvent ( QEvent *  e )

overrideprotected

Definition at line 85 of file qgsratiolockbutton.cpp.

void QgsRatioLockButton::lockChanged ( bool  locked )

signal

Emitted whenever the lock state changes.

bool QgsRatioLockButton::locked ( ) const

inline

Returns whether the button state is locked.

Returns

true if the button state is locked.

See also

setLocked

Definition at line 59 of file qgsratiolockbutton.h.

void QgsRatioLockButton::resetRatio

(

)

Resets the current width/height ratio, taking the width and height from the current values of the width and height spin boxes.

Definition at line 160 of file qgsratiolockbutton.cpp.

void QgsRatioLockButton::resizeEvent ( QResizeEvent *  event )

overrideprotected

Definition at line 100 of file qgsratiolockbutton.cpp.

void QgsRatioLockButton::setHeightSpinBox

(

QDoubleSpinBox *

widget

)

Registers a spin box widget as the linked "height" spin box.

If both a width and height spin box are linked to the button, they will automatically have their values updates when if the other spin box value is changed. I.e. changing the width spin box will automatically update the height spin box to a value which keeps the same locked ratio.

See also

setWidthSpinBox()

Definition at line 153 of file qgsratiolockbutton.cpp.

void QgsRatioLockButton::setLocked

(

bool

locked

)

Sets whether the button state is locked.

Parameters

locked

locked state

See also

locked

Definition at line 37 of file qgsratiolockbutton.cpp.

void QgsRatioLockButton::setWidthSpinBox

(

QDoubleSpinBox *

widget

)

Registers a spin box widget as the linked "width" spin box.

If both a width and height spin box are linked to the button, they will automatically have their values updates when if the other spin box value is changed. I.e. changing the width spin box will automatically update the height spin box to a value which keeps the same locked ratio.

See also

setHeightSpinBox()

Definition at line 146 of file qgsratiolockbutton.cpp.

void QgsRatioLockButton::showEvent ( QShowEvent *  e )

overrideprotected

Definition at line 94 of file qgsratiolockbutton.cpp.

Property Documentation

bool QgsRatioLockButton::locked

readwrite

Definition at line 37 of file qgsratiolockbutton.h.

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

• /build/qgis-3.4.15+24xenial/src/gui/qgsratiolockbutton.h
• /build/qgis-3.4.15+24xenial/src/gui/qgsratiolockbutton.cpp