OpenGLTexture class

A widget that contains the Texture widget.

The size of this widget is not related to the texture size. It grabs also the mouse events to pass to the shader.

First get the id calling OpenGLController().flutterOpenglPlugin.createSurface then feed this widget with id got:

'''dart SizedBox( width: 400, height: 300, child: FutureBuilder( /// The surface size identifies the real texture size and /// it is not related to the above SizedBox size future: OpenGLController().openglPlugin.createSurface(300, 200), builder: (_, snapshot) { if (snapshot.hasError || !snapshot.hasData) { return const SizedBox.shrink(); } /// When the texture id is retrieved, it will be possible /// to start the renderer, set a shader and display it.

  /// Start renderer thread
  OpenGLController().openglFFI.startThread();

  /// Set the fragment shader
  OpenGLController().openglFFI.setShaderToy(fShader);

  /// build the texture widget
  return OpenGLTexture(id: snapshot.data!);
},

), ) '''

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• OpenGLTexture

Constructors

OpenGLTexture({Key? key, required int id})

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

id → int

the texture id got by OpenGLController().flutterOpenglPlugin.createSurface

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited