#include <channeldocker_dock.h>

Inheritance diagram for ChannelDockerDock:

Public Member Functions
	ChannelDockerDock ()

QString	observerName () override

void	setCanvas (KoCanvasBase *canvas) override

void	unsetCanvas () override

Public Member Functions inherited from KoCanvasObserverBase
	KoCanvasObserverBase ()

KoCanvasBase *	observedCanvas () const

void	setObservedCanvas (KoCanvasBase *canvas)

void	unsetObservedCanvas ()

virtual	~KoCanvasObserverBase ()

Private Attributes
QPointer< KisCanvas2 >	m_canvas

ChannelDockerWidget *	m_widget {nullptr}

Additional Inherited Members

Detailed Description

Definition at line 18 of file channeldocker_dock.h.

Constructor & Destructor Documentation

◆ ChannelDockerDock()

ChannelDockerDock::ChannelDockerDock ( )

Definition at line 14 of file channeldocker_dock.cpp.

{
    setWindowTitle(i18nc("Channel as in Color Channels", "Channels"));
 
    m_widget = new ChannelDockerWidget(this);
    setWidget(m_widget);
}

References m_widget.

Member Function Documentation

◆ observerName()

QString ChannelDockerDock::observerName ( )

inlineoverridevirtual

Reimplemented from KoCanvasObserverBase.

Definition at line 23 of file channeldocker_dock.h.

23{ return "ChannelDockerDock"; }

◆ setCanvas()

void ChannelDockerDock::setCanvas ( KoCanvasBase * canvas )

overridevirtual

re-implement this method in your canvas observer. It will be called whenever a canvas becomes active. Note that you are responsible for not connecting more than one time to the signals of a canvas or any of the QObjects you can access through the canvas.

Implements KoCanvasObserverBase.

Definition at line 22 of file channeldocker_dock.cpp.

{
    if (m_canvas) {
        m_canvas->disconnectCanvasObserver(this);
        m_canvas->image()->disconnect(this);
    }
 
    KisCanvas2 *newCanvas = canvas ? dynamic_cast<KisCanvas2*>(canvas) : nullptr;
 
    m_widget->setCanvas(newCanvas);
 
    setEnabled(bool(canvas));
}

References m_canvas, m_widget, and ChannelDockerWidget::setCanvas().

◆ unsetCanvas()

void ChannelDockerDock::unsetCanvas ( )

overridevirtual

Re-implement to notify the observer that its canvas is no longer among the living. The daisies, it is pushing up. This means you don't have to disconnect, it's dead.

The old canvas should be deleted already, so if you stored a pointer to it, don't touch!

Note that currently there is a bug where in certain specific circumstances unsetCanvas can be called when it shouldn't, see for example KWStatisticsDocker for a workaround for this problem.

Implements KoCanvasObserverBase.

Definition at line 36 of file channeldocker_dock.cpp.

{
    setCanvas(0);
}

References setCanvas().

Member Data Documentation

◆ m_canvas

QPointer<KisCanvas2> ChannelDockerDock::m_canvas

private

Definition at line 29 of file channeldocker_dock.h.

◆ m_widget

ChannelDockerWidget* ChannelDockerDock::m_widget {nullptr}