Draggable mixin
- Superclass constraints
- Mixin applications
Properties
- children → ComponentSet
-
The children of the current component.
no setterinherited
- debugColor ↔ Color
-
The color that the debug output should be rendered with.
getter/setter pairinherited
- debugCoordinatesPrecision → int?
-
How many decimal digits to print when displaying coordinates in the
debug mode. Setting this to null will suppress all coordinates from
the output.
no setterinherited
- debugMode ↔ bool
-
Returns whether this Component is in debug mode or not.
When a child is added to the Component it gets the same debugMode as
its parent has when it is prepared.
getter/setter pairinherited
- debugPaint → Paint
-
The debugColor represented as a Paint object.
no setterinherited
- debugTextPaint → TextPaint
-
Returns a TextPaint object with the debugColor set as color for the
text.
no setterinherited
- hasChildren → bool
-
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasPendingLifecycleEvents → bool
-
no setterinherited
- isDragged → bool
-
no setter
- isLoaded → bool
-
Whether this component has completed its onLoad step.
no setterinherited
- isMounted → bool
-
Whether this component is currently added to a component tree.
no setterinherited
- lifecycle → _LifecycleManager
-
no setterinherited
-
loaded
→ Future<
void> -
A future that will complete once this component has finished loading.
no setterinherited
-
mounted
→ Future<
void> -
A future that will complete once the component is mounted on its parent
no setterinherited
- parent → Component?
-
The current parent of the component, or null if there is none.
no setterinherited
- positionType ↔ PositionType
-
What coordinate system this component should respect (i.e. should it
observe camera, viewport, or use the raw canvas).
getter/setter pairinherited
- priority ↔ int
-
Render priority of this component. This allows you to control the order in
which your components are rendered.
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shouldRemove ↔ bool
-
Whether this component should be removed or not.
getter/setter pairinherited
Methods
-
add(
Component component) → Future< void> ? -
Schedules
componentto be added as a child to this component.inherited -
addAll(
Iterable< Component> components) → Future<void> -
A convenience method to add multiple children at once.
inherited
-
addToParent(
Component parent) → Future< void> ? -
Adds this component to the provided
parent(see add for details).inherited -
ancestors(
{bool includeSelf = false}) → Iterable< Component> -
An iterator producing this component's parent, then its parent's parent,
then the great-grand-parent, and so on, until it reaches a component
without a parent.
inherited
-
changeParent(
Component newParent) → void -
Changes the current parent for another parent and prepares the tree under
the new root.
inherited
-
changePriorityWithoutResorting(
int priority) → void -
Usually this is not something that the user would want to call since the
component list isn't re-ordered when it is called.
See FlameGame.changePriority instead.
inherited
-
contains(
Component c) → bool -
Whether the children list contains the given component.
inherited
-
containsPoint(
Vector2 point) → bool -
Called to check whether the point is to be counted as within the component
It needs to be overridden to have any effect, like it is in
PositionComponent.
inherited
-
createComponentSet(
) → ComponentSet -
This method creates the children container for the current component.
Override this method if you need to have a custom ComponentSet within
a particular class.
inherited
-
descendants(
{bool includeSelf = false, bool reversed = false}) → Iterable< Component> -
Recursively enumerates all nested children.
inherited
-
eventPosition(
PositionInfo info) → Vector2 -
inherited
-
findGame(
) → Game? -
inherited
-
findParent<
T extends Component> () → T? -
Returns the closest parent further up the hierarchy that satisfies type=T,
or null if no such parent can be found.
inherited
-
firstChild<
T extends Component> () → T? -
Returns the first child that matches the given type
T.inherited -
handleDragCanceled(
int pointerId) → bool -
handleDragEnded(
int pointerId, DragEndInfo info) → bool -
handleDragStart(
int pointerId, DragStartInfo info) → bool -
handleDragUpdated(
int pointerId, DragUpdateInfo info) → bool -
lastChild<
T extends Component> () → T? -
Returns the last child that matches the given type
T.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
onDragCancel(
) → bool -
Override this to handle if a drag/pan gesture is cancelled that was
previously started on the component that this mixin is used on.
Return
trueif you want this event to continue to be passed on to components underneath (lower priority) this component. -
onDragEnd(
DragEndInfo info) → bool -
Override this to handle the end of a drag/pan gesture that is within
the boundaries (determined by Component.containsPoint) of the component
that this mixin is used on.
Return
trueif you want this event to continue to be passed on to components underneath (lower priority) this component. -
onDragStart(
DragStartInfo info) → bool -
Override this to handle the start of a drag/pan gesture that is within the
boundaries (determined by Component.containsPoint) of the component that
this mixin is used on.
Return
trueif you want this event to continue to be passed on to components underneath (lower priority) this component. -
onDragUpdate(
DragUpdateInfo info) → bool -
Override this to handle the update of a drag/pan gesture that is within
the boundaries (determined by Component.containsPoint) of the component
that this mixin is used on.
Return
trueif you want this event to continue to be passed on to components underneath (lower priority) this component. -
onGameResize(
Vector2 size) → void -
Called whenever the size of the top-level Canvas changes.
inherited
-
onLoad(
) → Future< void> ? -
Late initialization method for Component.
inherited
-
onMount(
) → void -
Called when the component is added to its parent.
override
-
onRemove(
) → void -
Called right before the component is removed from the game.
inherited
-
processPendingLifecycleEvents(
) → void -
Attempt to resolve any pending lifecycle events on this component.
inherited
-
propagateToChildren<
T extends Component> (bool handler(T), {bool includeSelf = false}) → bool -
This method first calls the passed handler on the leaves in the tree,
the children without any children of their own.
Then it continues through all other children. The propagation continues
until the handler returns false, which means "do not continue", or when
the handler has been called with all children.
inherited
-
remove(
Component component) → void -
Removes a component from the component tree, calling onRemove for it and
its children.
inherited
-
removeAll(
Iterable< Component> components) → void -
Removes all the children in the list and calls onRemove for all of them
and their children.
inherited
-
removeFromParent(
) → void -
Remove the component from its parent in the next tick.
inherited
-
render(
Canvas canvas) → void -
inherited
-
renderDebugMode(
Canvas canvas) → void -
inherited
-
renderTree(
Canvas canvas) → void -
inherited
-
reorderChildren(
) → void -
Call this if any of this component's children priorities have changed
at runtime.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
update(
double dt) → void -
This method is called periodically by the game engine to request that your
component updates itself.
inherited
-
updateTree(
double dt) → void -
This method traverses the component tree and calls update on all its
children according to their priority order, relative to the
priority of the direct siblings, not the children or the ancestors.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited