Gondwana Game Engine Development (master) - 2.6.1
Gondwana is a cross-platform 2.5D game and rendering engine written in C#/.NET 8. It provides fine-grained control over rendering, timing, and scene composition, with built-in support for parallax, z-ordering, pixel overhang, collision detection, and particle effects. Gondwana targets desktop and web platforms using SkiaSharp for graphics and pluggable audio backends for desktop and browser targets.
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Gondwana.Widgets.Overlays.TooltipWidget Class Referencesealed

Displays a lightweight view-level text tooltip near a screen position. More...

Inheritance diagram for Gondwana.Widgets.Overlays.TooltipWidget:
Gondwana.Widgets.WidgetBase Gondwana.Drawing.Direct.DirectComposite Gondwana.Drawing.Direct.IDirectCompositeChild Gondwana.Drawing.Direct.IDirectCompositeContainer Gondwana.Drawing.Direct.IDirectDrawable Gondwana.Physics.Movement.IMovable Gondwana.Drawing.IDrawable

Public Member Functions

 TooltipWidget (RenderSurfaceHostBase renderSurfaceHost, View view, Size size, string? nickname=null)
 Creates a hidden view-level tooltip.
TooltipWidget ShowTooltip (string text, Point screenPositionPx)
 Shows text near the supplied pointer position, clamped to the owning view.
TooltipWidget HideTooltip ()
 Hides the tooltip.
TooltipWidget SetTooltipZOrder (int zOrder)
 Sets the drawing Z-order for the tooltip.
Public Member Functions inherited from Gondwana.Widgets.WidgetBase
virtual bool HitTest (View view, Point screenPositionPx)
 Determines whether the widget can be hit at the specified screen position within the specified view.
virtual bool HitTest (Point screenPositionPx)
 Determines whether the widget can be hit at the specified screen position.
WidgetBase Show ()
 Shows the widget and registers it for input routing.
WidgetBase Hide ()
 Hides the widget and releases any routed input state.
WidgetBase Activate ()
 Activates the widget and brings it to the front of the input order.
WidgetBase Cancel ()
 Cancels the widget.
Public Member Functions inherited from Gondwana.Drawing.Direct.DirectComposite
 DirectComposite (RenderSurfaceHostBase renderSurfaceHost, DirectDrawingMode mode, PointF anchor=default, string? nickname=null)
 Initializes a new instance of the DirectComposite class.
Vector2 GetPosition ()
 Gets the current composite anchor.
void SetPosition (Vector2 position)
 Sets the composite anchor and repositions all children from their stored offsets.
DirectComposite SetPosition (float x, float y)
 Sets the composite anchor and repositions all children from their stored offsets.
virtual DirectComposite Add (IDirectCompositeChild child, bool keepCurrentOffset=true, Vector2? explicitLocalOffsetPx=null)
 Adds a composite-compatible direct drawable as a child.
virtual DirectComposite Remove (IDirectCompositeChild child)
 Removes a child without disposing it.
virtual DirectComposite Clear ()
 Removes every child without disposing them.
DirectComposite SetLocalOffset (IDirectCompositeChild child, Vector2 newLocalOffsetPx)
 Changes one child's local offset and reapplies its position.
DirectComposite SetZOrder (int zOrder)
 Applies one Z-order to every descendant.
DirectComposite SetOpacity (float opacity)
 Applies one opacity to every descendant.
DirectComposite SetIsVisible (bool visible)
 Applies one visibility value to every descendant.
DirectComposite FadeTo (float targetOpacity, float durationSec)
 Fades every descendant to the requested opacity.
DirectComposite FadeIn (float durationSec)
 Fades every descendant to full opacity.
DirectComposite FadeOut (float durationSec)
 Fades every descendant to zero opacity.
RectangleF GetDrawLocationScreen (View view)
 Gets the union of all visible descendants as projected through a view.
void Draw (BackbufferBase backbuffer, RectangleF destRectScreen)
 Performs no direct rendering because descendants render independently.
virtual void Update (long tick)
 Advances composite movement.
virtual void Dispose ()
 Disposes the composite and every child it owns.

Properties

DirectRectangle Background [get]
 Gets the tooltip background drawing.
TextBlock Label [get]
 Gets the tooltip text drawing.
Rectangle Bounds [get]
 Gets the current tooltip bounds in screen pixels.
Size Size [get, set]
 Gets or sets the tooltip size in screen pixels.
int PointerOffsetPx [get, set]
 Gets or sets the gap between the pointer and tooltip.
Properties inherited from Gondwana.Widgets.WidgetBase
bool IsInputEnabled [get, set]
 Gets or sets a value indicating whether the widget can participate in input routing.
bool IsPointerInputEnabled [get, set]
 Gets or sets a value indicating whether the widget can receive pointer input.
bool IsKeyboardInputEnabled [get, set]
 Gets or sets a value indicating whether the widget can receive keyboard input.
bool CanReceiveFocus [get, set]
 Gets or sets a value indicating whether the widget can receive keyboard focus.
bool IsFocused [get, set]
 Gets a value indicating whether the widget currently has keyboard focus.
Properties inherited from Gondwana.Drawing.Direct.DirectComposite
Guid Id = Guid.NewGuid() [get]
 Gets the unique identifier of the composite.
string? Nickname [get]
 Gets the optional diagnostic nickname of the composite.
RenderSurfaceHostBase RenderSurfaceHost [get]
 Gets the render surface host shared by the composite and its children.
DirectDrawingMode Mode [get]
 Gets the coordinate mode shared by the composite and its children.
SceneLayer? SceneLayer [get]
 Gets the scene layer shared by all children in scene-layer mode.
View? View [get]
 Gets the view shared by all children in view mode.
ReadOnlyCollection< IDirectCompositeChild > Children [get]
 Gets the children owned by the composite.
MovementController Movement [get]
 Gets the movement controller used to move the composite anchor.
MovementSpace PositionSpace [get]
 Gets the coordinate space used by the movement controller.
bool Visible [get, set]
 Gets or sets the visibility of all descendants.
int ZOrder [get]
 Gets the composite Z-order.
Rectangle ScreenBounds [get]
 Gets the union of all visible descendants' screen-space bounds.
Rectangle WorldBounds [get]
 Gets the union of all visible descendants' world-space bounds.

Additional Inherited Members

Protected Member Functions inherited from Gondwana.Widgets.WidgetBase
 WidgetBase (RenderSurfaceHostBase renderSurfaceHost, DirectDrawingMode mode, PointF anchor=default, string? nickname=null)
 Initializes a new instance of the WidgetBase class.
virtual void ProcessShown ()
 Performs processing when the widget is shown before notification callbacks are invoked.
virtual void ProcessHidden ()
 Performs processing when the widget is hidden before notification callbacks are invoked.
virtual void ProcessActivated ()
 Performs processing when the widget is activated before notification callbacks are invoked.
virtual void ProcessCancelled ()
 Performs processing when the widget is cancelled before notification callbacks are invoked.
virtual void ProcessPointerEnter (WidgetPointerEventArgs args)
 Performs processing when a pointer enters the widget before notification callbacks are invoked.
virtual void ProcessPointerLeave (WidgetPointerEventArgs args)
 Performs processing when a pointer leaves the widget before notification callbacks are invoked.
virtual void ProcessPointerDown (WidgetPointerEventArgs args)
 Performs processing when a pointer press begins on the widget before notification callbacks are invoked.
virtual void ProcessPointerMove (WidgetPointerEventArgs args)
 Performs processing when pointer movement is routed to the widget before notification callbacks are invoked.
virtual void ProcessPointerUp (WidgetPointerEventArgs args)
 Performs processing when a pointer press is released for the widget before notification callbacks are invoked.
virtual void ProcessFocusGained ()
 Performs processing when the widget gains focus before notification callbacks are invoked.
virtual void ProcessFocusLost ()
 Performs processing when the widget loses focus before notification callbacks are invoked.
virtual void ProcessKeyboardInput (WidgetKeyboardEventArgs args)
 Performs processing when keyboard input is routed to the widget before notification callbacks are invoked.
virtual bool ShouldDispatchPointerClick (WidgetPointerEventArgs args)
 Determines whether a pointer-click event should be dispatched for the specified pointer event data.
virtual void OnShown ()
 Called when the widget is shown.
virtual void OnHidden ()
 Called when the widget is hidden.
virtual void OnActivated ()
 Called when the widget is activated.
virtual void OnCancelled ()
 Called when the widget is cancelled.
virtual void OnPointerEnter (WidgetPointerEventArgs args)
 Called when a pointer enters the widget bounds.
virtual void OnPointerLeave (WidgetPointerEventArgs args)
 Called when a pointer leaves the widget bounds.
virtual void OnPointerDown (WidgetPointerEventArgs args)
 Called when a pointer press begins on the widget.
virtual void OnPointerMove (WidgetPointerEventArgs args)
 Called when pointer movement is routed to the widget.
virtual void OnPointerUp (WidgetPointerEventArgs args)
 Called when a pointer press is released for the widget.
virtual void OnMouseWheel (WidgetMouseWheelEventArgs args)
 Called when mouse-wheel input is routed to the widget.
virtual void OnPointerClick (WidgetPointerEventArgs args)
 Called when a pointer click is dispatched to the widget.
virtual void OnFocusGained ()
 Called when the widget gains focus.
virtual void OnFocusLost ()
 Called when the widget loses focus.
virtual void OnKeyboardInput (WidgetKeyboardEventArgs args)
 Called when keyboard input is routed to the widget.
Protected Member Functions inherited from Gondwana.Drawing.Direct.DirectComposite
virtual void OnChildAdded (IDirectCompositeChild child)
 Called after a child has been successfully added.
virtual void OnChildRemoved (IDirectCompositeChild child)
 Called after a child has been removed from the composite.
Events inherited from Gondwana.Widgets.WidgetBase
Action? Shown
 Occurs when the widget is shown.
Action? Hidden
 Occurs when the widget is hidden.
Action? Activated
 Occurs when the widget is activated.
Action? Cancelled
 Occurs when the widget is cancelled.
Action< WidgetPointerEventArgs >? PointerEnter
 Occurs when a pointer enters the widget bounds.
Action< WidgetPointerEventArgs >? PointerLeave
 Occurs when a pointer leaves the widget bounds.
Action< WidgetPointerEventArgs >? PointerDown
 Occurs when a pointer button or touch press begins on the widget.
Action< WidgetPointerEventArgs >? PointerMove
 Occurs when a pointer moves while routed to the widget.
Action< WidgetPointerEventArgs >? PointerUp
 Occurs when a pointer button or touch press is released for the widget.
Action< WidgetPointerEventArgs >? PointerClick
 Occurs when a pointer press and release completes as a click on the widget.
Action< WidgetMouseWheelEventArgs >? MouseWheel
 Occurs when mouse-wheel input is routed to the widget while the pointer is over it.
Action? FocusGained
 Occurs when the widget gains keyboard focus.
Action? FocusLost
 Occurs when the widget loses keyboard focus.
Action< WidgetKeyboardEventArgs >? KeyboardInput
 Occurs when keyboard input is routed to the widget.
Events inherited from Gondwana.Drawing.Direct.DirectComposite
EventHandler< IDirectDrawable >? Disposing
 Occurs when the composite is being disposed.
Events inherited from Gondwana.Drawing.Direct.IDirectDrawable
EventHandler< IDirectDrawable >? Disposing
 Occurs when the object is being disposed.

Detailed Description

Displays a lightweight view-level text tooltip near a screen position.

Tooltips are non-interactive and therefore do not intercept pointer input from the widget or game content beneath them. ShowTooltip clamps the tooltip to the owning view and flips it to the opposite side of the pointer when needed.

Definition at line 18 of file TooltipWidget.cs.

Constructor & Destructor Documentation

◆ TooltipWidget()

Gondwana.Widgets.Overlays.TooltipWidget.TooltipWidget ( RenderSurfaceHostBase renderSurfaceHost,
View view,
Size size,
string? nickname = null )

Creates a hidden view-level tooltip.

Parameters
renderSurfaceHostThe render surface host that owns the tooltip.
viewThe view in which the tooltip is displayed.
sizeThe tooltip size in screen pixels.
nicknameAn optional diagnostic nickname.

Definition at line 31 of file TooltipWidget.cs.

Member Function Documentation

◆ HideTooltip()

TooltipWidget Gondwana.Widgets.Overlays.TooltipWidget.HideTooltip ( )

Hides the tooltip.

Returns
The current tooltip.

Definition at line 142 of file TooltipWidget.cs.

◆ SetTooltipZOrder()

TooltipWidget Gondwana.Widgets.Overlays.TooltipWidget.SetTooltipZOrder ( int zOrder)

Sets the drawing Z-order for the tooltip.

Parameters
zOrderBackground Z-order.
Returns
The current tooltip.

Definition at line 153 of file TooltipWidget.cs.

◆ ShowTooltip()

TooltipWidget Gondwana.Widgets.Overlays.TooltipWidget.ShowTooltip ( string text,
Point screenPositionPx )

Shows text near the supplied pointer position, clamped to the owning view.

Parameters
textTooltip text.
screenPositionPxPointer position in screen pixels.
Returns
The current tooltip.

Definition at line 127 of file TooltipWidget.cs.

Property Documentation

◆ Background

DirectRectangle Gondwana.Widgets.Overlays.TooltipWidget.Background
get

Gets the tooltip background drawing.

Definition at line 81 of file TooltipWidget.cs.

◆ Bounds

Rectangle Gondwana.Widgets.Overlays.TooltipWidget.Bounds
get

Gets the current tooltip bounds in screen pixels.

Definition at line 87 of file TooltipWidget.cs.

◆ Label

TextBlock Gondwana.Widgets.Overlays.TooltipWidget.Label
get

Gets the tooltip text drawing.

Definition at line 84 of file TooltipWidget.cs.

◆ PointerOffsetPx

int Gondwana.Widgets.Overlays.TooltipWidget.PointerOffsetPx
getset

Gets or sets the gap between the pointer and tooltip.

Definition at line 113 of file TooltipWidget.cs.

◆ Size

Size Gondwana.Widgets.Overlays.TooltipWidget.Size
getset

Gets or sets the tooltip size in screen pixels.

Definition at line 101 of file TooltipWidget.cs.