juce::detail::StandardCachedComponentImage Struct Reference

#include <juce_StandardCachedComponentImage.h>

Inheritance diagram for juce::detail::StandardCachedComponentImage:

Collaboration diagram for juce::detail::StandardCachedComponentImage:

Public Member Functions
	StandardCachedComponentImage (Component &c) noexcept
bool	invalidate (const Rectangle< int > &area) override
	Invalidates a section of the cached image data.
bool	invalidateAll () override
	Invalidates all cached image data.
void	paint (Graphics &g) override
	Called as part of the parent component's paint method, this must draw the given component into the target graphics context, using the cached version where possible.
void	releaseResources () override
	Called to indicate that the component is no longer active, so any cached data should be released if possible.

Private Attributes
Image	image
Component &	owner
float	scale = 1.0f
RectangleList< int >	validArea

Constructor & Destructor Documentation

StandardCachedComponentImage()

juce::detail::StandardCachedComponentImage::StandardCachedComponentImage ( Component &  c )

inlineexplicitnoexcept

Member Function Documentation

invalidate()

bool juce::detail::StandardCachedComponentImage::invalidate ( const Rectangle< int > &  area )

inlineoverridevirtual

Invalidates a section of the cached image data.

Returns

true if the peer should also be repainted, or false if this object handles all repaint work internally.

Implements juce::CachedComponentImage.

References juce::RectangleList< ValueType >::subtract(), and validArea.

invalidateAll()

bool juce::detail::StandardCachedComponentImage::invalidateAll ( )

inlineoverridevirtual

Invalidates all cached image data.

Returns

true if the peer should also be repainted, or false if this object handles all repaint work internally.

Implements juce::CachedComponentImage.

References juce::RectangleList< ValueType >::clear(), and validArea.

paint()

void juce::detail::StandardCachedComponentImage::paint ( Graphics &  )

inlineoverridevirtual

Called as part of the parent component's paint method, this must draw the given component into the target graphics context, using the cached version where possible.

Implements juce::CachedComponentImage.

References juce::LowLevelGraphicsContext::addTransform(), juce::Image::ARGB, juce::Colours::black, juce::RectangleList< ValueType >::clear(), juce::RectangleList< ValueType >::containsRectangle(), juce::Component::getAlpha(), juce::Image::getBounds(), juce::Graphics::getInternalContext(), juce::Component::getLocalBounds(), juce::Image::getPixelData(), image, juce::Image::isNull(), juce::Component::isOpaque(), juce::jmax(), owner, juce::Component::paintEntireComponent(), juce::Image::RGB, juce::AffineTransform::scale(), scale, juce::Image::setBackupEnabled(), juce::Colours::transparentBlack, and validArea.

releaseResources()

void juce::detail::StandardCachedComponentImage::releaseResources ( )

inlineoverridevirtual

Called to indicate that the component is no longer active, so any cached data should be released if possible.

Implements juce::CachedComponentImage.

References image.

Member Data Documentation

image

Image juce::detail::StandardCachedComponentImage::image

private

Referenced by paint(), and releaseResources().

owner

Component& juce::detail::StandardCachedComponentImage::owner

private

Referenced by paint().

scale

float juce::detail::StandardCachedComponentImage::scale = 1.0f

private

Referenced by paint().

validArea

RectangleList<int> juce::detail::StandardCachedComponentImage::validArea

private

Referenced by invalidate(), invalidateAll(), and paint().

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The documentation for this struct was generated from the following file:

• juce_StandardCachedComponentImage.h