openmsx::Layer Class Reference

Interface for display layers. More...

#include <Layer.hh>

Inheritance diagram for openmsx::Layer:

Public Types
enum	ZIndex {   Z_DUMMY = -1 , Z_BACKGROUND = 0 , Z_MSX_PASSIVE = 30 , Z_MSX_ACTIVE = 40 ,   Z_OSDGUI = 50 , Z_IMGUI = 60 }
	Determines stacking order of layers: layers with higher Z-indices are closer to the viewer. More...
enum	Coverage { COVER_FULL , COVER_PARTIAL , COVER_NONE }
	Describes how much of the screen is currently covered by a particular layer. More...

Public Member Functions
virtual	~Layer ()=default
virtual void	paint (OutputSurface &output)=0
	Paint this layer.
ZIndex	getZ () const
	Query the Z-index of this layer.
bool	isActive () const
Coverage	getCoverage () const
	Query the coverage of this layer.
void	setDisplay (LayerListener &display_)
	Store pointer to Display.

Protected Member Functions
	Layer (Coverage coverage_=COVER_NONE, ZIndex z_=Z_DUMMY)
	Construct a layer.
void	setCoverage (Coverage coverage_)
	Changes the current coverage of this layer.
void	setZ (ZIndex z)
	Changes the current Z-index of this layer.

Friends
class	ScopedLayerHider

Detailed Description

Interface for display layers.

Definition at line 11 of file Layer.hh.

Member Enumeration Documentation

Coverage

enum openmsx::Layer::Coverage

Describes how much of the screen is currently covered by a particular layer.

Enumerator
COVER_FULL	Layer fully covers the screen: any underlying layers are invisible.
COVER_PARTIAL	Layer partially covers the screen: it may cover only part of the screen area, or it may be (semi-)transparent in places.
COVER_NONE	Layer is not visible, that is completely transparent.

Definition at line 29 of file Layer.hh.

ZIndex

enum openmsx::Layer::ZIndex

Determines stacking order of layers: layers with higher Z-indices are closer to the viewer.

Enumerator
Z_DUMMY
Z_BACKGROUND
Z_MSX_PASSIVE
Z_MSX_ACTIVE
Z_OSDGUI
Z_IMGUI

Definition at line 17 of file Layer.hh.

Constructor & Destructor Documentation

~Layer()

virtual openmsx::Layer::~Layer ( )

virtualdefault

Layer()

openmsx::Layer::Layer ( Coverage  coverage_ = COVER_NONE, ZIndex  z_ = Z_DUMMY  )

inlineexplicitprotected

Construct a layer.

Definition at line 64 of file Layer.hh.

Member Function Documentation

getCoverage()

Coverage openmsx::Layer::getCoverage ( ) const

inline

Query the coverage of this layer.

Definition at line 55 of file Layer.hh.

getZ()

ZIndex openmsx::Layer::getZ ( ) const

inline

Query the Z-index of this layer.

Definition at line 50 of file Layer.hh.

Referenced by openmsx::Display::addLayer(), and isActive().

isActive()

bool openmsx::Layer::isActive ( ) const

inline

Definition at line 51 of file Layer.hh.

References getZ(), and Z_MSX_ACTIVE.

Referenced by openmsx::Display::findActiveLayer().

paint()

virtual void openmsx::Layer::paint ( OutputSurface &  output )

pure virtual

Paint this layer.

Implemented in openmsx::OSDGUILayer, openmsx::DummyRenderer, openmsx::GLSnow, and openmsx::PostProcessor.

setCoverage()

void openmsx::Layer::setCoverage ( Coverage  coverage_ )

inlineprotected

Changes the current coverage of this layer.

Definition at line 71 of file Layer.hh.

Referenced by openmsx::ScopedLayerHider::ScopedLayerHider(), and openmsx::ScopedLayerHider::~ScopedLayerHider().

setDisplay()

void openmsx::Layer::setDisplay ( LayerListener &  display_ )

inline

Store pointer to Display.

Will be called by Display::addLayer().

Definition at line 60 of file Layer.hh.

Referenced by openmsx::Display::addLayer().

setZ()

void openmsx::Layer::setZ ( ZIndex  z )

protected

Changes the current Z-index of this layer.

Definition at line 6 of file Layer.cc.

References openmsx::LayerListener::updateZ().

Friends And Related Symbol Documentation

ScopedLayerHider

friend class ScopedLayerHider

friend

Definition at line 89 of file Layer.hh.

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

• Layer.hh
• Layer.cc