Software Development Kit - User Manual

class TutorialBrowser in Tinman.Demo.Tutorials.Framework

A GUI widget that lets the user pick a tutorial from a list and start it.

sealed class TutorialBrowser implements IEventListenerGeneric<Component>
  extends Widget



Returns the configuration value that describes this object.

public override method ToConfig ()
type ConfigValue
returns [not-null] The configuration value.
implements Widget.ToConfig


All configurable objects need to implement this interface. For simple types, it is preferable to delegate to ToValue.

The returned value may be of type Invalid, which means that this object in its current state cannot be described with the configuration API.

Before returning the resulting configuration value, Cache must be called on it, passing this IConfigurable object as parameter.


Public / Attributes


Returns the actual pixel bounds of this widget.

public property ActualBounds { get }
type Box2I
value The actual pixel bounds or Empty.
inherited Widget.ActualBounds


The pixel bounds of this widget.

public virtual property Bounds { get set }
type IWidgetBounds
value [not-null] The pixel bounds.
inherited Widget.Bounds


Defaults to FullScreen.


A machine-readable unique identifier for the user help of this component.

public override property HelpId { get }
type string
value The help ID or null if none.
overrides Widget.HelpId


Will this object be disposed upon the next call to Dispose?

public property IsSoleOwnership { get }
type bool
value true if the object will be disposed when Dispose is called,
false if the object will not be disposed, because some other code is still holding shared ownership (see AcquireBase).
inherited Disposable.IsSoleOwnership


Returns the lifecycle state of this object.

public property LifecycleState { get }
type LifecycleState
value The lifecycle state.
inherited Disposable.LifecycleState


The mouse cursor to show for this widget.

public override property MouseCursor { get }
type MouseCursor
value The mouse cursor
overrides Widget.MouseCursor


Returns the screen region that is not occluded by any opaque user-interface components.

public property NonUserInterfaceBounds { get }
type Box2I
value The non-UI pixel bounds.
inherited Widget.NonUserInterfaceBounds


If there is not user-interface, the screen region is returned.


Path to a directory that this widget can use to store own data and settings.

public property SettingsPath { get set }
type Path
value Canonical path to the settings directory or null.
inherited Widget.SettingsPath


The settings path may only be set before Initialize is called on the widget. Afterwards, the settings path cannot be changed.

See also:



Should the mouse be captured, because this input consumer only processes relative input?

public override property ShouldCaptureMouse { get }
type bool
value true if the mouse should be captured, false if not.
overrides Widget.ShouldCaptureMouse

See also:



The tutorials that have been added to the browser.

public property Tutorials { get }
type IVectorConst<TutorialInfoBase>
value [not-null] The list of tutorials.

Public / Constructors


Creates a new instance of TutorialBrowser.

public constructor TutorialBrowser ()

Public / Methods


Acquires a strong reference to this disposable object.

[OwnerReturn, Pure]
public method AcquireBase (bool allowNull = false)
type IDisposable
params allowNull Depicts what to do when this object is no longer valid:
true: return null
false: throw an exception
returns The strong reference to this disposable object or null iff allowNull is true and this object is no longer valid.
inherited Disposable.AcquireBase


The object will not be actually disposed by calls to IDisposable when there is at least one strong reference left. Code that calls this method is responsible for calling the IDisposable method accordingly.

This method is not intended to be used in performance-critical code. It should only be used to high-level resource management.

Using this method usually requires type casting. Subclasses may additionally implement IDisposableGeneric, in order to provide some syntactic sugar for that.



Adds a tutorial to the browser.

public method Add (TutorialInfoBase info)
params info [not-null] The tutorial info to add.


Adds the default tutorials to the browser.

public method AddDefault ()


Consumes the given user input event.

public method ConsumeInput (InputEvent inputEvent)
type bool
params inputEvent The user input event.
returns true if the input event has been consumed, false if not.
inherited Widget.ConsumeInput


Input events are provided to an IInputConsumer object only if it has the input focus (see FocusGained and FocusLost). Mouse events are provided when the mouse cursor is inside of the input bounds (MouseEnter and MouseLeave). The Closing event can be provided at any time.

  1. FocusGained: gained input focus
  2. Keyboard events:
  3. Mouse events:
    1. MouseEnter
    2. Mouse events:
    3. MouseLeave
  4. FocusLost: lost input focus
  5. Closing: user request to shut down


Releases all resources held by this object if there are no more strong references to it, decrements the reference counter by one otherwise.

[Dispose, OwnerThis, ThreadSafe]
public method Dispose ()
inherited Disposable.Dispose


The Dispose method silently returns if the object has already been disposed.

Implementing methods must not throw any exceptions.


Attaches this component to the given Graphics context.

public override method GraphicsAttach (Graphics graphics)
params graphics [not-null] The graphics context.
overrides Widget.GraphicsAttach


All graphics-related resources should be created here.

Do not use the screen size of graphics here, as it may not be valid (see Graphics for details). Instead, use the screen size that is provided by GraphicsResize.


Detaches this user interface component from its Graphics context.

public virtual method GraphicsDetach ()
inherited Widget.GraphicsDetach


All graphics-related resources should be disposed here.


The screen size has changed.

public method GraphicsResize (Vec2I screenSize)
params screenSize The new screen size, in pixels.
inherited Widget.GraphicsResize


Initializes the object, if necessary.

public method Initialize ()
inherited Initializable.Initialize


The Initialize method returns silently if the object is already in the state Initialized.



Attaches this input consumer to the given input state object.

public virtual method InputAttach (IInputState input)
params input [not-null] The input state object.
inherited Widget.InputAttach


The input state object provides a snapshot of the input keys and buttons. It should not be used to detect up/down/click events.


Detached this input consumer from its input state object.

public virtual method InputDetach ()
inherited Widget.InputDetach


Restores the object state from the given JSON value.

public override method JsonDeserialize (JsonValue value)
params value [not-null] The input JSON value.
overrides Widget.JsonDeserialize


Implementations of this method must be able to consume malformed JSON values, without corrupting the object state.


Serializes the object state to an JSON value.

public override method JsonSerialize (JsonValue value)
params value [not-null] The output JSON value.
overrides Widget.JsonSerialize


public method NotifyEvent (DialogEventArgs argument)
params argument

The event has been triggered.

public method NotifyEvent (Component argument)
params argument The event argument.
implements IEventListenerGeneric.NotifyEvent


Attaches this object to the given profiler.

public virtual method ProfilerAttach (IProfiler profiler)
params profiler [not-null] The profiler to attach to.
inherited Widget.ProfilerAttach


Detaches this object from its IProfiler object.

public virtual method ProfilerDetach ()
inherited Widget.ProfilerDetach


Performs rendering of the next frame.

public override method Render ()
overrides Widget.Render


Implementing methods must not assume that any specific render state is in place when being called. Instead, the implementing method is responsible for setting up all state that is required for rendering.

Usually, implementing classes receive their current graphics context directly or indirectly from GraphicsContextAttach or GraphicsAttach.

In order to maximize parallelism between the CPU and GPU, only actual rendering (using the current graphics context) should be performed here. All other preparation resp. setup should be done in RenderPrepare instead.

It is not guaranteed that the GPU will have processed all render commands of the last frame when this method is called, in order to render the next one.

See also:



Performs 2D rendering.

public override method Render2D (Graphics g)
params g [not-null] The graphics object to use.
overrides Widget.Render2D


When this method is called, the given Graphics object has already been initialized for 2D rendering:

Usually, Render2D is called from within Render.


Prepares rendering of the next frame.

public virtual method RenderPrepare ()
inherited Widget.RenderPrepare


This method is called before Render, when the graphics context has not yet begun to render the scene.

All setup work that does not require a graphics context (e.g. matrix computation, per-frame visibility determination) should be done here. This can help to maximize parallelism between the CPU and the GPU.

It is expected that the GPU is busy processing the render commands of the last frame, while this method prepares the next one.


Provides the enclosing IApplicationRunner.

public virtual method RunnerAttach (IApplicationRunner runner)
params runner [not-null] The application runner.
inherited Widget.RunnerAttach


Calling of this method is optional. Implementations of IApplication should not depend on the availability of an IApplicationRunner context object.


Clears the reference to the enclosing IApplicationRunner.

public virtual method RunnerDetach ()
inherited Widget.RunnerDetach


Takes a screenshot the next time this widget is rendered.

public virtual method Screenshot (WidgetScreenshotDelegate result)
params result [not-null] The screenshot pixels will be passed to this delegate.
inherited Widget.Screenshot


Tries to load the settings of this widget, ignoring errors.

public method SettingsLoadTry (string name = null)
type bool
params name Name of the JSON configuration file. If null or empty, 'Settings.json' will be used. Defaults to null.
returns true if the settings have been loaded, false if not.
inherited Widget.SettingsLoadTry

See also:



Tries to save the settings of this widget, ignoring errors.

public method SettingsSaveTry (string name = null)
type bool
params name Name of the JSON configuration file. If null or empty, 'Settings.json' will be used. Defaults to null.
returns true if the settings have been saved, false if not.
inherited Widget.SettingsSaveTry

See also:



This method is called once per application frame.

public override method UpdateFrameTime (float32 time)
type bool
params time [>0] The amount of time that has elapsed since the last frame, in seconds.
returns true if the object needs to be presented again, false if the current presentation is still valid.
overrides Widget.UpdateFrameTime


Updates GUI components, according to current values in the data model.

public method UpdateGui (bool valuesOnly)
params valuesOnly true to update values in the existing GUI structure,
false to rebuild the GUI structure before updating values.
inherited Widget.UpdateGui


Implementing method are expected to be fail-safe, i.e. their behaviour is well-defined, even if there is not GUI or the data model is empty. Thus, the UpdateGui method may be called at any time.

This method may be called repeatedly when valuesOnly is true. Implementing methods are expected to perform efficient in this case.


Attaches this object to the given WidgetGui instance.

public override method WidgetGuiAttach (IWidgetGui widgetGui)
params widgetGui [not-null] The WidgetGui instance.
overrides Widget.WidgetGuiAttach


As best practice, implementing classes should create their user interface components in this method and call PanelAdd accordingly.

The calls to WidgetGuiAttach resp. WidgetGuiDetach may be omitted, for example when running without a widget GUI overlay. Implementing classes must take this into account and should not rely on the premise that this method is always called.


Detaches this object from its WidgetGui instance.

public override method WidgetGuiDetach ()
overrides Widget.WidgetGuiDetach


Implementing classes must remove all panels via PanelRemove that they have added to the widget GUI.



The logger object of this class.

public static readonly field Logger
type ILogger