#include <image_shader.h>

Inheritance diagram for flutter::ImageShader:

Public Member Functions
	~ImageShader () override

Dart_Handle	initWithImage (CanvasImage *image, DlTileMode tmx, DlTileMode tmy, int filter_quality_index, Dart_Handle matrix_handle)

std::shared_ptr< DlColorSource >	shader (DlImageSampling) override

int	width ()

int	height ()

void	dispose ()

Public Member Functions inherited from flutter::Shader
	~Shader () override

Public Member Functions inherited from flutter::RefCountedDartWrappable< Shader >
virtual void	RetainDartWrappableReference () const override

virtual void	ReleaseDartWrappableReference () const override

Public Member Functions inherited from fml::RefCountedThreadSafe< T >
void	Release () const

Public Member Functions inherited from fml::internal::RefCountedThreadSafeBase
void	AddRef () const

bool	HasOneRef () const

void	AssertHasOneRef () const

Public Member Functions inherited from tonic::DartWrappable
	DartWrappable ()

virtual const DartWrapperInfo &	GetDartWrapperInfo () const =0

Dart_Handle	CreateDartWrapper (DartState *dart_state)

void	AssociateWithDartWrapper (Dart_Handle wrappable)

void	ClearDartWrapper ()

Dart_WeakPersistentHandle	dart_wrapper () const

Static Public Member Functions
static void	Create (Dart_Handle wrapper)

Additional Inherited Members
Public Types inherited from tonic::DartWrappable
enum	DartNativeFields { kPeerIndex , kNumberOfNativeFields }

Protected Member Functions inherited from flutter::Shader
	Shader ()

Protected Member Functions inherited from fml::RefCountedThreadSafe< T >
	RefCountedThreadSafe ()

	~RefCountedThreadSafe ()

Protected Member Functions inherited from fml::internal::RefCountedThreadSafeBase
	RefCountedThreadSafeBase ()

	~RefCountedThreadSafeBase ()

bool	Release () const

void	Adopt ()

Protected Member Functions inherited from tonic::DartWrappable
virtual	~DartWrappable ()

Static Protected Member Functions inherited from tonic::DartWrappable
static Dart_PersistentHandle	GetTypeForWrapper (tonic::DartState *dart_state, const tonic::DartWrapperInfo &wrapper_info)

Detailed Description

Definition at line 19 of file image_shader.h.

Constructor & Destructor Documentation

◆ ~ImageShader()

flutter::ImageShader::~ImageShader ( )

overridedefault

References shader().

Member Function Documentation

◆ Create()

void flutter::ImageShader::Create ( Dart_Handle wrapper )

static

Definition at line 22 of file image_shader.cc.

                                            {
  auto res = fml::MakeRefCounted<ImageShader>();
  res->AssociateWithDartWrapper(wrapper);
}

◆ dispose()

void flutter::ImageShader::dispose ( )

Definition at line 68 of file image_shader.cc.

                          {
  cached_shader_.reset();
  image_.reset();
  ClearDartWrapper();
}

References tonic::DartWrappable::ClearDartWrapper().

◆ height()

int flutter::ImageShader::height ( )

Definition at line 64 of file image_shader.cc.

                        {
  return image_->height();
}

◆ initWithImage()

Dart_Handle flutter::ImageShader::initWithImage	(	CanvasImage *	image,
		DlTileMode	tmx,
		DlTileMode	tmy,
		int	filter_quality_index,
		Dart_Handle	matrix_handle
	)

Definition at line 27 of file image_shader.cc.

                                                                  {
  // CanvasImage should have already checked for a UI thread safe image.
  if (!image || !image->image()->isUIThreadSafe()) {
    return ToDart("ImageShader constructor called with non-genuine Image.");
  }
 
  image_ = image->image();
  tonic::Float64List matrix4(matrix_handle);
  DlMatrix local_matrix = ToDlMatrix(matrix4);
  matrix4.Release();
  sampling_is_locked_ = filter_quality_index >= 0;
  DlImageSampling sampling =
      sampling_is_locked_ ? ImageFilter::SamplingFromIndex(filter_quality_index)
                          : DlImageSampling::kLinear;
  cached_shader_ =
      DlColorSource::MakeImage(image_, tmx, tmy, sampling, &local_matrix);
  FML_DCHECK(cached_shader_->isUIThreadSafe());
  return Dart_Null();
}

References FML_DCHECK, FlutterVulkanImage::image, image, flutter::kLinear, flutter::DlColorSource::MakeImage(), flutter::ImageFilter::SamplingFromIndex(), and flutter::ToDlMatrix().

◆ shader()

std::shared_ptr< DlColorSource > flutter::ImageShader::shader ( DlImageSampling sampling )

overridevirtual

Implements flutter::Shader.

Definition at line 51 of file image_shader.cc.

                                                                         {
  const DlImageColorSource* image_shader = cached_shader_->asImage();
  FML_DCHECK(image_shader);
  if (sampling_is_locked_ || sampling == image_shader->sampling()) {
    return cached_shader_;
  }
  return image_shader->WithSampling(sampling);
}

References FML_DCHECK, flutter::DlImageColorSource::sampling(), and flutter::DlImageColorSource::WithSampling().

Referenced by ~ImageShader().

◆ width()

int flutter::ImageShader::width ( )

Definition at line 60 of file image_shader.cc.

                       {
  return image_->width();
}

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

lib/ui/painting/image_shader.h
lib/ui/painting/image_shader.cc

Public Member Functions

Static Public Member Functions

Additional Inherited Members