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skia/external/github.com/rive-app/rive-cpp/4ca3b88a34e02d534bb800a803e81217ee11cc60/./src/animation/state_machine_instance.cpp
blob: 26648c5c25913f4cd6e626452d11700b1f2981c0 [file]
#include "rive/animation/animation_reset.hpp"
#include "rive/animation/animation_reset_factory.hpp"
#include "rive/animation/animation_state_instance.hpp"
#include "rive/animation/animation_state.hpp"
#include "rive/animation/any_state.hpp"
#include "rive/animation/keyframe_interpolator.hpp"
#include "rive/animation/keyed_object.hpp"
#include "rive/animation/keyed_property.hpp"
#include "rive/animation/linear_animation.hpp"
#include "rive/animation/linear_animation_instance.hpp"
#include "rive/data_bind/bindable_property_number.hpp"
#include "rive/data_bind/converters/data_converter.hpp"
#include "rive/animation/entry_state.hpp"
#include "rive/animation/exit_state.hpp"
#include "rive/animation/layer_state_flags.hpp"
#include "rive/animation/nested_linear_animation.hpp"
#include "rive/animation/nested_state_machine.hpp"
#include "rive/animation/scripted_transition_condition.hpp"
#include "rive/animation/state_instance.hpp"
#include "rive/animation/state_machine_bool.hpp"
#include "rive/animation/state_machine_input_instance.hpp"
#include "rive/animation/state_machine_input.hpp"
#include "rive/animation/state_machine_instance.hpp"
#include "rive/animation/state_machine_instance_clusters.hpp"
#include "rive/animation/state_machine_layer.hpp"
#include "rive/animation/listener_invocation.hpp"
#include "rive/animation/state_machine_listener.hpp"
#include "rive/animation/state_machine_listener_single.hpp"
#include "rive/animation/state_machine_number.hpp"
#include "rive/animation/state_machine_trigger.hpp"
#include "rive/animation/state_machine.hpp"
#include "rive/animation/state_transition.hpp"
#include "rive/animation/listener_action.hpp"
#include "rive/animation/listener_types/listener_input_type_viewmodel.hpp"
#include "rive/animation/scripted_listener_action.hpp"
#include "rive/animation/transition_condition.hpp"
#include "rive/animation/transition_comparator.hpp"
#include "rive/animation/transition_property_viewmodel_comparator.hpp"
#include "rive/animation/transition_viewmodel_condition.hpp"
#include "rive/animation/state_machine_fire_event.hpp"
#include "rive/viewmodel/viewmodel_instance_trigger.hpp"
#include "rive/artboard_component_list.hpp"
#include "rive/constraints/draggable_constraint.hpp"
#include "rive/data_bind/data_bind_context.hpp"
#include "rive/data_bind/data_bind.hpp"
#include "rive/data_bind/context/context_value.hpp"
#include "rive/data_bind/data_values/data_value_number.hpp"
#include "rive/data_bind_flags.hpp"
#include "rive/event_report.hpp"
#include "rive/hit_result.hpp"
#include "rive/listener_group.hpp"
#include "rive/math/aabb.hpp"
#include "rive/math/random.hpp"
#include "rive/math/hit_test.hpp"
#include "rive/nested_animation.hpp"
#include "rive/nested_artboard.hpp"
#include "rive/process_event_result.hpp"
#include "rive/scripted/scripted_drawable.hpp"
#include "rive/shapes/shape.hpp"
#include "rive/text/text.hpp"
#include "rive/math/math_types.hpp"
#include "rive/audio_event.hpp"
#include "rive/dirtyable.hpp"
#include "rive/profiler/profiler_macros.h"
#include "rive/text/text_input.hpp"
#include "rive/refcnt.hpp"
#include "rive/animation/focus_listener_group.hpp"
#include "rive/animation/text_input_listener_group.hpp"
#include "rive/animation/listener_types/listener_input_type_event.hpp"
#include "rive/focus_data.hpp"
#include "rive/node.hpp"
#include "rive/semantic/semantic_data.hpp"
#include "rive/view_model_type.hpp"
#include "rive/viewmodel/viewmodel.hpp"
#include "rive/file.hpp"
#include "rive/data_bind/data_context.hpp"
#include <array>
#include <memory>
#include <unordered_map>
#include <vector>
#include <chrono>
#include <cmath>
using namespace rive;
// ArtboardComponentList builds one StateMachineInstance per row, so a 1000-row
// list pays sizeof(StateMachineInstance) a thousand times over before any
// content exists. The clusters in state_machine_instance_clusters.hpp exist to
// keep it small: 1080 B before that work, 368 B after, which the allocator
// rounds to 384 instead of 1280.
//
// Before adding an inline member, check whether it belongs in one of the
// SMI* sidecar clusters instead — anything that is only populated for a
// specific authored feature (events, bindables, focus/keyboard/gamepad/
// semantics, scripting) does. Note also that nothing inline here is a
// std::unordered_map any more, which is what makes this type the same size on
// libc++ and libstdc++; an inline hash container would give that up.
#ifdef RIVE_MICROPROFILE
#include "rive/profiler/rive_profile.hpp"
static std::string getStateName(const StateInstance* stateInstance)
{
if (stateInstance == nullptr)
{
return "(null)";
}
auto state = stateInstance->state();
if (state->is<AnimationState>())
{
auto anim = state->as<AnimationState>()->animation();
return anim != nullptr ? anim->name() : "Animation";
}
if (state->is<EntryState>())
{
return "Entry";
}
if (state->is<ExitState>())
{
return "Exit";
}
if (state->is<AnyState>())
{
return "Any";
}
return "Blend";
}
#endif
namespace rive
{
class StateMachineLayerInstance
{
public:
~StateMachineLayerInstance()
{
delete m_anyStateInstance;
delete m_currentState;
delete m_stateFrom;
}
void init(StateMachineInstance* stateMachineInstance,
const StateMachineLayer* layer,
ArtboardInstance* instance)
{
if (File::deterministicMode)
{
srand((unsigned int)1);
}
else
{
auto now = std::chrono::high_resolution_clock::now();
auto nanos = std::chrono::duration_cast<std::chrono::nanoseconds>(
now.time_since_epoch())
.count();
srand((unsigned int)nanos);
}
m_stateMachineInstance = stateMachineInstance;
m_artboardInstance = instance;
assert(m_layer == nullptr);
// A layer without an any state is degenerate but not fatal: every
// other use of m_anyStateInstance is either a delete guard or a
// tryChangeState call, both of which handle null. Keeping this
// tolerant is what lets StateMachineLayer stop requiring the state
// to be present, so exports can eventually omit unused ones.
auto anyState = layer->anyState();
m_anyStateInstance = anyState == nullptr
? nullptr
: anyState->makeInstance(instance).release();
m_layer = layer;
changeState(m_layer->entryState());
}
void resetState()
{
if (m_stateFrom != m_anyStateInstance && m_stateFrom != m_currentState)
{
delete m_stateFrom;
}
m_stateFrom = nullptr;
if (m_currentState != m_anyStateInstance)
{
delete m_currentState;
}
m_currentState = nullptr;
changeState(m_layer->entryState());
}
void updateMix(float seconds)
{
if (m_transition != nullptr && m_stateFrom != nullptr &&
resolvedDuration() != 0)
{
auto mixTime = resolvedMixTime();
if (mixTime == 0.0f)
{
m_mix = 1.0f;
}
else
{
m_mix =
std::min(1.0f, std::max(0.0f, (m_mix + seconds / mixTime)));
}
if (m_mix == 1.0f && !m_transitionCompleted)
{
m_transitionCompleted = true;
clearAnimationReset();
fireEvents(StateMachineFireOccurance::atEnd,
m_transition->events());
performListenerActions(StateMachineFireOccurance::atEnd,
m_transition->listenerActions());
}
}
else
{
m_mix = 1.0f;
}
}
bool advance(float seconds, bool newFrame)
{
if (newFrame)
{
m_stateMachineChangedOnAdvance = false;
}
m_currentState->advance(seconds, m_stateMachineInstance);
updateMix(seconds);
if (m_stateFrom != nullptr && m_mix < 1.0f && !m_holdAnimationFrom)
{
// This didn't advance during our updateState, but it should now
// that we realize we need to mix it in.
m_stateFrom->advance(seconds, m_stateMachineInstance);
}
apply();
bool changedState = false;
for (int i = 0; updateState(); i++)
{
changedState = true;
apply();
if (i == maxIterations)
{
auto stateMachineName =
m_stateMachineInstance->stateMachine() == nullptr
? "[SM Not found]"
: m_stateMachineInstance->stateMachine()
->name()
.c_str();
auto layerName = m_layer == nullptr ? "[LY Not found]"
: m_layer->name().c_str();
auto artboardName =
m_stateMachineInstance->artboard() == nullptr
? "[AB Not found]"
: m_stateMachineInstance->artboard()->name().c_str();
fprintf(stderr,
"%s StateMachine exceeded max iterations in layer %s "
"on artboard %s\n",
stateMachineName,
layerName,
artboardName);
return false;
}
}
m_currentState->clearSpilledTime();
return changedState || m_mix != 1.0f || m_waitingForExit ||
(m_currentState != nullptr && m_currentState->keepGoing());
}
/// Returns the per-instance transition duration, resolving any data
/// binding override. Falls back to the shared definition value when
/// no binding exists.
uint32_t resolvedDuration() const
{
if (m_transitionDurationProperty != nullptr)
{
float val = m_transitionDurationProperty->propertyValue();
return val < 0 ? 0 : static_cast<uint32_t>(std::round(val));
}
return m_transition->duration();
}
/// Computes the mix time using the per-instance resolved duration.
float resolvedMixTime() const
{
auto dur = resolvedDuration();
if (dur == 0)
{
return 0;
}
if (m_transition->durationIsPercentage())
{
float animationDuration = 0.0f;
auto state = m_stateFrom->state();
if (state->is<AnimationState>())
{
auto animation = state->as<AnimationState>()->animation();
if (animation != nullptr)
{
animationDuration = animation->durationSeconds();
}
}
return (float)dur / 100.0f * animationDuration;
}
return (float)dur / 1000.0f;
}
bool isTransitioning()
{
return m_transition != nullptr && m_stateFrom != nullptr &&
resolvedDuration() != 0 && m_mix < 1.0f;
}
bool updateState()
{
// Don't allow changing state while a transition is taking place
// (we're mixing one state onto another) if enableEarlyExit is not true.
if (isTransitioning() && !m_transition->enableEarlyExit())
{
return false;
}
m_waitingForExit = false;
if (tryChangeState(m_anyStateInstance))
{
return true;
}
return tryChangeState(m_currentState);
}
void fireEvents(StateMachineFireOccurance occurs,
const std::vector<StateMachineFireAction*>& fireEvents)
{
for (auto event : fireEvents)
{
if (event->occurs() == occurs)
{
event->perform(m_stateMachineInstance);
}
}
}
void performListenerActions(
StateMachineFireOccurance occurs,
const std::vector<std::unique_ptr<ListenerAction>>& listenerActions)
{
for (const auto& action : listenerActions)
{
if (action->matchesScheduledOccurrence(occurs))
{
action->perform(m_stateMachineInstance,
ListenerInvocation::none());
}
}
}
bool canChangeState(const LayerState* stateTo)
{
return !(
(m_currentState == nullptr ? nullptr : m_currentState->state()) ==
stateTo);
}
double randomValue() { return RandomProvider::generateRandomFloat(); }
void changeState(const LayerState* stateTo)
{
if ((m_currentState == nullptr ? nullptr : m_currentState->state()) ==
stateTo)
{
return;
}
// Fire end events for the state we're changing from.
if (m_currentState != nullptr)
{
fireEvents(StateMachineFireOccurance::atEnd,
m_currentState->state()->events());
performListenerActions(StateMachineFireOccurance::atEnd,
m_currentState->state()->listenerActions());
}
m_currentState =
stateTo == nullptr
? nullptr
: stateTo->makeInstance(m_artboardInstance).release();
// Fire start events for the state we're changing to.
if (m_currentState != nullptr)
{
fireEvents(StateMachineFireOccurance::atStart,
m_currentState->state()->events());
performListenerActions(StateMachineFireOccurance::atStart,
m_currentState->state()->listenerActions());
}
return;
}
StateTransition* findRandomTransition(StateInstance* stateFromInstance)
{
uint32_t totalWeight = 0;
auto stateFrom = stateFromInstance->state();
for (size_t i = 0, length = stateFrom->transitionCount(); i < length;
i++)
{
auto transition = stateFrom->transition(i);
if (canChangeState(transition->stateTo()))
{
auto allowed = transition->allowed(stateFromInstance,
m_stateMachineInstance,
this);
if (allowed == AllowTransition::yes)
{
transition->evaluatedRandomWeight(
transition->randomWeight());
totalWeight += transition->randomWeight();
}
else
{
transition->evaluatedRandomWeight(0);
if (allowed == AllowTransition::waitingForExit)
{
m_waitingForExit = true;
}
}
}
else
{
transition->evaluatedRandomWeight(0);
}
}
if (totalWeight > 0)
{
double randomWeight = randomValue() * totalWeight * 1.0;
double currentWeight = 0;
size_t index = 0;
StateTransition* transition;
while (index < stateFrom->transitionCount())
{
transition = stateFrom->transition(index);
double transitionWeight =
(double)transition->evaluatedRandomWeight();
if (currentWeight + transitionWeight > randomWeight)
{
transition->useLayerInConditions(m_stateMachineInstance,
this);
return transition;
}
currentWeight += transitionWeight;
index++;
}
}
return nullptr;
}
StateTransition* findAllowedTransition(StateInstance* stateFromInstance)
{
auto stateFrom = stateFromInstance->state();
// If it should randomize
if ((static_cast<LayerStateFlags>(stateFrom->flags()) &
LayerStateFlags::Random) == LayerStateFlags::Random)
{
return findRandomTransition(stateFromInstance);
}
// Else search the first valid transition
for (size_t i = 0, length = stateFrom->transitionCount(); i < length;
i++)
{
auto transition = stateFrom->transition(i);
if (canChangeState(transition->stateTo()))
{
auto allowed = transition->allowed(stateFromInstance,
m_stateMachineInstance,
this);
if (allowed == AllowTransition::yes)
{
transition->evaluatedRandomWeight(
transition->randomWeight());
transition->useLayerInConditions(m_stateMachineInstance,
this);
return transition;
}
else
{
transition->evaluatedRandomWeight(0);
if (allowed == AllowTransition::waitingForExit)
{
m_waitingForExit = true;
}
}
}
}
return nullptr;
}
void buildAnimationResetForTransition()
{
m_animationReset =
AnimationResetFactory::fromStates(m_stateFrom,
m_currentState,
m_artboardInstance);
}
void clearAnimationReset()
{
if (m_animationReset != nullptr)
{
AnimationResetFactory::release(std::move(m_animationReset));
m_animationReset = nullptr;
}
}
bool tryChangeState(StateInstance* stateFromInstance)
{
if (stateFromInstance == nullptr)
{
return false;
}
auto outState = m_currentState;
auto transition = findAllowedTransition(stateFromInstance);
if (transition != nullptr)
{
clearAnimationReset();
changeState(transition->stateTo());
m_stateMachineChangedOnAdvance = true;
#ifdef RIVE_MICROPROFILE
RiveProfile::instance().recordTransition(
m_stateMachineInstance->artboard()->name(),
m_stateMachineInstance->name(),
m_layer->name(),
getStateName(outState),
getStateName(m_currentState),
m_stateMachineInstance->artboard());
#endif
// state actually has changed
m_transition = transition;
m_transitionDurationProperty =
m_stateMachineInstance->findTransitionPropertyInstance(
transition,
StateTransitionBase::durationPropertyKey);
fireEvents(StateMachineFireOccurance::atStart,
transition->events());
performListenerActions(StateMachineFireOccurance::atStart,
transition->listenerActions());
if (resolvedDuration() == 0)
{
m_transitionCompleted = true;
fireEvents(StateMachineFireOccurance::atEnd,
transition->events());
performListenerActions(StateMachineFireOccurance::atEnd,
transition->listenerActions());
}
else
{
m_transitionCompleted = false;
}
if (m_stateFrom != m_anyStateInstance)
{
// Old state from is done.
delete m_stateFrom;
}
m_stateFrom = outState;
if (!m_transitionCompleted)
{
buildAnimationResetForTransition();
}
// If we had an exit time and wanted to pause on exit, make
// sure to hold the exit time. Delegate this to the
// transition by telling it that it was completed.
if (outState != nullptr && transition->applyExitCondition(outState))
{
// Make sure we apply this state. This only returns true
// when it's an animation state instance.
auto instance =
static_cast<AnimationStateInstance*>(m_stateFrom)
->animationInstance();
m_holdAnimation = instance->animation();
m_holdTime = instance->time();
}
m_mixFrom = m_mix;
// Keep mixing last animation that was mixed in.
if (m_mix != 0.0f)
{
m_holdAnimationFrom = transition->pauseOnExit();
}
if (m_currentState != nullptr)
{
auto advanceTime = 0.0f;
if (m_stateFrom != nullptr)
{
if (m_stateFrom->state()->is<AnimationState>())
{
auto instance =
static_cast<AnimationStateInstance*>(m_stateFrom)
->animationInstance();
advanceTime = instance->spilledTime();
}
}
m_currentState->advance(advanceTime, m_stateMachineInstance);
}
m_mix = 0.0f;
updateMix(0.0f);
m_waitingForExit = false;
return true;
}
return false;
}
void apply(/*Artboard* artboard*/)
{
if (m_animationReset != nullptr)
{
m_animationReset->apply(m_artboardInstance);
}
if (m_holdAnimation != nullptr)
{
m_holdAnimation->apply(m_artboardInstance, m_holdTime, m_mixFrom);
m_holdAnimation = nullptr;
}
KeyFrameInterpolator* interpolator = nullptr;
if (m_transition != nullptr && m_transition->interpolator() != nullptr)
{
interpolator = m_transition->interpolator();
}
if (m_stateFrom != nullptr && m_mix < 1.0f)
{
auto fromMix = interpolator != nullptr
? interpolator->transform(m_mixFrom)
: m_mixFrom;
m_stateFrom->apply(m_artboardInstance, fromMix);
}
if (m_currentState != nullptr)
{
auto mix = interpolator != nullptr ? interpolator->transform(m_mix)
: m_mix;
m_currentState->apply(m_artboardInstance, mix);
}
}
bool stateChangedOnAdvance() const
{
return m_stateMachineChangedOnAdvance;
}
const LayerState* currentState()
{
return m_currentState == nullptr ? nullptr : m_currentState->state();
}
const LinearAnimationInstance* currentAnimation() const
{
if (m_currentState == nullptr ||
!m_currentState->state()->is<AnimationState>())
{
return nullptr;
}
return static_cast<AnimationStateInstance*>(m_currentState)
->animationInstance();
}
private:
static const int maxIterations = 100;
StateMachineInstance* m_stateMachineInstance = nullptr;
const StateMachineLayer* m_layer = nullptr;
ArtboardInstance* m_artboardInstance = nullptr;
StateInstance* m_anyStateInstance = nullptr;
StateInstance* m_currentState = nullptr;
StateInstance* m_stateFrom = nullptr;
const StateTransition* m_transition = nullptr;
BindablePropertyNumber* m_transitionDurationProperty = nullptr;
std::unique_ptr<AnimationReset> m_animationReset = nullptr;
bool m_transitionCompleted = false;
bool m_holdAnimationFrom = false;
float m_mix = 1.0f;
float m_mixFrom = 1.0f;
bool m_stateMachineChangedOnAdvance = false;
bool m_waitingForExit = false;
/// Used to ensure a specific animation is applied on the next apply.
const LinearAnimation* m_holdAnimation = nullptr;
float m_holdTime = 0.0f;
};
/// Representation of a Component from the Artboard Instance and all the
/// listeners it triggers. Allows tracking hover and performing hit detection
/// only once on components that trigger multiple listeners.
class HitDrawable : public HitComponent
{
public:
HitDrawable(Drawable* drawable,
Component* component,
StateMachineInstance* stateMachineInstance,
bool isOpaque) :
HitComponent(component, stateMachineInstance)
{
this->m_drawable = drawable;
this->isOpaque = isOpaque;
if (drawable->isTargetOpaque())
{
canEarlyOut = false;
}
}
float hitRadius = 2;
bool isHovered = false;
bool canEarlyOut = true;
bool hasDownListener = false;
bool hasUpListener = false;
bool isOpaque = false;
Drawable* m_drawable;
std::vector<ListenerGroup*> listeners;
bool hitTest(Vec2D position) const override { return false; }
void prepareEvent(Vec2D position,
ListenerType hitType,
int pointerId) override
{
if (canEarlyOut &&
(hitType != ListenerType::down || !hasDownListener) &&
(hitType != ListenerType::up || !hasUpListener))
{
#ifdef TESTING
earlyOutCount++;
#endif
return;
}
isHovered = hitType != ListenerType::exit && hitTest(position);
// // iterate all listeners associated with this hit shape
if (isHovered)
{
for (auto listenerGroup : listeners)
{
listenerGroup->hover(pointerId);
}
}
}
HitResult processGamepadInvocation(
const ListenerInvocation& invocation,
ScriptedDrawable* alreadyDispatched) override
{
return HitResult::none;
}
HitResult processEvent(Vec2D position,
ListenerType hitType,
bool canHit,
float timeStamp,
int pointerId) override
{
// If the shape doesn't have any ListenerType::move / enter / exit and
// the event being processed is not of the type it needs to handle.
// There is no need to perform a hitTest (which is relatively expensive
// and would be happening on every pointer move) so we early out.
if (canEarlyOut &&
(hitType != ListenerType::down || !hasDownListener) &&
(hitType != ListenerType::up || !hasUpListener))
{
return HitResult::none;
}
bool isBlockingEvent = false;
// // iterate all listeners associated with this hit shape
for (auto listenerGroup : listeners)
{
if (listenerGroup->isConsumed())
{
continue;
}
if (listenerGroup->processEvent(m_component,
position,
pointerId,
hitType,
canHit,
timeStamp,
m_stateMachineInstance) ==
ProcessEventResult::scroll)
{
isBlockingEvent = true;
}
}
return (isHovered && canHit)
? (isOpaque || m_drawable->isTargetOpaque() ||
isBlockingEvent)
? HitResult::hitOpaque
: HitResult::hit
: HitResult::none;
}
void addListener(ListenerGroup* listenerGroup)
{
if (!listenerGroup->canEarlyOut(m_component))
{
canEarlyOut = false;
}
else
{
if (listenerGroup->needsDownListener(m_component))
{
hasDownListener = true;
}
if (listenerGroup->needsUpListener(m_component))
{
hasUpListener = true;
}
}
listeners.push_back(listenerGroup);
}
void enablePointerEvents(int pointerId) override
{
for (auto listenerGroup : listeners)
{
listenerGroup->enable(pointerId);
}
}
void disablePointerEvents(int pointerId) override
{
for (auto listenerGroup : listeners)
{
listenerGroup->disable(pointerId);
}
}
};
/// Representation of a HitDrawable with a Hittable component
class HitExpandable : public HitDrawable
{
public:
HitExpandable(Drawable* drawable,
Component* component,
StateMachineInstance* stateMachineInstance,
bool isOpaque = false) :
HitDrawable(drawable, component, stateMachineInstance, isOpaque)
{}
bool hitTest(Vec2D position) const override
{
return m_component->hitTestPoint(position, true, true);
}
};
class HitTextRun : public HitExpandable
{
public:
HitTextRun(Drawable* drawable,
TextValueRun* component,
StateMachineInstance* stateMachineInstance,
bool isOpaque = false) :
HitExpandable(drawable, component, stateMachineInstance, isOpaque)
{
if (component)
{
component->isHitTarget(true);
}
}
};
class HitLayout : public HitDrawable
{
public:
HitLayout(Drawable* layout,
StateMachineInstance* stateMachineInstance,
bool isOpaque = false) :
HitDrawable(layout, layout, stateMachineInstance, isOpaque)
{}
bool hitTest(Vec2D position) const override
{
return m_component->hitTestPoint(position, false, true);
}
};
class HitNestedArtboard : public HitComponent
{
public:
HitNestedArtboard(Component* nestedArtboard,
StateMachineInstance* stateMachineInstance) :
HitComponent(nestedArtboard, stateMachineInstance)
{}
~HitNestedArtboard() override {}
bool hitTest(Vec2D position) const override
{
auto nestedArtboard = m_component->as<NestedArtboard>();
if (nestedArtboard->isCollapsed() || nestedArtboard->isPaused())
{
return false;
}
Vec2D nestedPosition;
if (!nestedArtboard->worldToLocal(position, &nestedPosition))
{
// Mounted artboard isn't ready or has a 0 scale transform.
return false;
}
for (auto nestedAnimation : nestedArtboard->nestedAnimations())
{
if (nestedAnimation->is<NestedStateMachine>())
{
auto nestedStateMachine =
nestedAnimation->as<NestedStateMachine>();
if (nestedStateMachine->hitTest(nestedPosition))
{
return true;
}
}
}
return false;
}
HitResult processGamepadInvocation(
const ListenerInvocation& invocation,
ScriptedDrawable* alreadyDispatched) override
{
auto hitResult = HitResult::none;
auto nestedArtboard = m_component->as<NestedArtboard>();
for (auto nestedAnimation : nestedArtboard->nestedAnimations())
{
if (nestedAnimation->is<NestedStateMachine>())
{
auto nestedStateMachine =
nestedAnimation->as<NestedStateMachine>();
nestedStateMachine->stateMachineInstance()
->broadcastGamepadToScriptedDrawables(invocation,
alreadyDispatched);
}
}
return hitResult;
}
HitResult processEvent(Vec2D position,
ListenerType hitType,
bool canHit,
float timeStamp,
int pointerId) override
{
auto nestedArtboard = m_component->as<NestedArtboard>();
HitResult hitResult = HitResult::none;
if (nestedArtboard->isCollapsed() || nestedArtboard->isPaused())
{
return hitResult;
}
Vec2D nestedPosition;
if (!nestedArtboard->worldToLocal(position, &nestedPosition))
{
// Mounted artboard isn't ready or has a 0 scale transform.
return hitResult;
}
for (auto nestedAnimation : nestedArtboard->nestedAnimations())
{
if (nestedAnimation->is<NestedStateMachine>())
{
auto nestedStateMachine =
nestedAnimation->as<NestedStateMachine>();
if (canHit)
{
switch (hitType)
{
case ListenerType::down:
hitResult =
nestedStateMachine->pointerDown(nestedPosition,
pointerId);
break;
case ListenerType::up:
hitResult =
nestedStateMachine->pointerUp(nestedPosition,
pointerId);
break;
case ListenerType::move:
hitResult =
nestedStateMachine->pointerMove(nestedPosition,
timeStamp,
pointerId);
break;
case ListenerType::dragStart:
nestedStateMachine->dragStart(nestedPosition,
timeStamp,
pointerId);
break;
case ListenerType::dragEnd:
nestedStateMachine->dragEnd(nestedPosition,
timeStamp,
pointerId);
break;
case ListenerType::exit:
hitResult =
nestedStateMachine->pointerExit(nestedPosition,
pointerId);
break;
case ListenerType::enter:
case ListenerType::event:
case ListenerType::click:
case ListenerType::componentProvided:
case ListenerType::textInput:
case ListenerType::viewModel:
case ListenerType::drag:
case ListenerType::focus:
case ListenerType::blur:
case ListenerType::keyboard:
case ListenerType::semanticAction:
case ListenerType::gamepad:
break;
}
}
else
{
switch (hitType)
{
case ListenerType::down:
case ListenerType::up:
case ListenerType::move:
case ListenerType::exit:
nestedStateMachine->pointerExit(nestedPosition,
pointerId);
break;
case ListenerType::dragStart:
case ListenerType::dragEnd:
case ListenerType::enter:
case ListenerType::event:
case ListenerType::click:
case ListenerType::componentProvided:
case ListenerType::textInput:
case ListenerType::viewModel:
case ListenerType::drag:
case ListenerType::focus:
case ListenerType::blur:
case ListenerType::keyboard:
case ListenerType::semanticAction:
case ListenerType::gamepad:
break;
}
}
}
}
return hitResult;
}
void prepareEvent(Vec2D position,
ListenerType hitType,
int pointerId) override
{}
};
class HitComponentList : public HitComponent
{
public:
HitComponentList(Component* componentList,
StateMachineInstance* stateMachineInstance) :
HitComponent(componentList, stateMachineInstance)
{}
~HitComponentList() override {}
bool hitTest(Vec2D position) const override
{
auto componentList = m_component->as<ArtboardComponentList>();
if (componentList->isCollapsed())
{
return false;
}
const auto& order = componentList->orderedListIndices();
for (auto it = order.rbegin(); it != order.rend(); ++it)
{
const int i = *it;
Vec2D listPosition;
if (!componentList->worldToLocal(position, &listPosition, i))
{
// Mounted artboard isn't ready or has a 0 scale transform.
continue;
}
auto stateMachine = componentList->stateMachineInstance(i);
if (stateMachine != nullptr && stateMachine->hitTest(listPosition))
{
return true;
}
}
return false;
}
HitResult processEvent(Vec2D position,
ListenerType hitType,
bool canHit,
float timeStamp,
int pointerId) override
{
auto componentList = m_component->as<ArtboardComponentList>();
HitResult hitResult = HitResult::none;
bool runningCanHit = canHit;
if (componentList->isCollapsed())
{
return hitResult;
}
const auto& order = componentList->orderedListIndices();
for (auto it = order.rbegin(); it != order.rend(); ++it)
{
const int i = *it;
Vec2D listPosition;
bool hit = componentList->worldToLocal(position, &listPosition, i);
if (!hit)
{
continue;
}
auto stateMachine = componentList->stateMachineInstance(i);
if (stateMachine != nullptr)
{
HitResult itemHitResult = HitResult::none;
if (runningCanHit)
{
switch (hitType)
{
case ListenerType::down:
itemHitResult =
stateMachine->pointerDown(listPosition,
pointerId);
break;
case ListenerType::up:
itemHitResult =
stateMachine->pointerUp(listPosition,
pointerId);
break;
case ListenerType::move:
itemHitResult =
stateMachine->pointerMove(listPosition,
timeStamp,
pointerId);
break;
case ListenerType::exit:
itemHitResult =
stateMachine->pointerExit(listPosition,
pointerId);
break;
case ListenerType::dragStart:
stateMachine->dragStart(listPosition,
0,
true,
pointerId);
break;
case ListenerType::dragEnd:
stateMachine->dragEnd(listPosition, 0, pointerId);
break;
case ListenerType::enter:
case ListenerType::event:
case ListenerType::click:
case ListenerType::componentProvided:
case ListenerType::textInput:
case ListenerType::viewModel:
case ListenerType::drag:
case ListenerType::focus:
case ListenerType::blur:
case ListenerType::keyboard:
case ListenerType::semanticAction:
case ListenerType::gamepad:
break;
}
}
else
{
switch (hitType)
{
case ListenerType::down:
case ListenerType::up:
case ListenerType::move:
case ListenerType::exit:
stateMachine->pointerExit(listPosition, pointerId);
break;
case ListenerType::dragStart:
case ListenerType::dragEnd:
case ListenerType::enter:
case ListenerType::event:
case ListenerType::click:
case ListenerType::componentProvided:
case ListenerType::textInput:
case ListenerType::viewModel:
case ListenerType::drag:
case ListenerType::focus:
case ListenerType::blur:
case ListenerType::keyboard:
case ListenerType::semanticAction:
case ListenerType::gamepad:
break;
}
}
if ((hitResult == HitResult::none &&
(itemHitResult == HitResult::hit ||
itemHitResult == HitResult::hitOpaque)) ||
(hitResult == HitResult::hit &&
itemHitResult == HitResult::hitOpaque))
{
hitResult = itemHitResult;
}
if (hitResult == HitResult::hitOpaque)
{
runningCanHit = false;
}
}
}
return hitResult;
}
HitResult processGamepadInvocation(
const ListenerInvocation& invocation,
ScriptedDrawable* alreadyDispatched) override
{
auto componentList = m_component->as<ArtboardComponentList>();
HitResult hitResult = HitResult::none;
bool runningCanHit = true;
if (componentList->isCollapsed())
{
return hitResult;
}
const auto& order = componentList->orderedListIndices();
for (auto it = order.rbegin(); it != order.rend(); ++it)
{
const int i = *it;
auto stateMachine = componentList->stateMachineInstance(i);
if (stateMachine != nullptr)
{
HitResult itemHitResult = HitResult::none;
if (runningCanHit)
{
itemHitResult =
stateMachine->broadcastGamepadToScriptedDrawables(
invocation,
alreadyDispatched);
}
if ((hitResult == HitResult::none &&
(itemHitResult == HitResult::hit ||
itemHitResult == HitResult::hitOpaque)) ||
(hitResult == HitResult::hit &&
itemHitResult == HitResult::hitOpaque))
{
hitResult = itemHitResult;
}
if (hitResult == HitResult::hitOpaque)
{
runningCanHit = false;
}
}
}
return hitResult;
}
void prepareEvent(Vec2D position,
ListenerType hitType,
int pointerId) override
{}
};
class ListenerViewModel;
// Helper that holds one view model property reference, listens to its dirt,
// and reports the parent ListenerViewModel when the property changes.
class ListenerViewModelPropertyBinding : public ViewModelValueDependent
{
public:
ListenerViewModelPropertyBinding(ListenerViewModel* parent,
ViewModelInstanceValue* vmProp);
virtual ~ListenerViewModelPropertyBinding();
void addDirt(ComponentDirt value, bool recurse) override;
void relinkDataBind() override;
ViewModelInstanceValue* value() { return m_viewModelInstanceValue.get(); }
protected:
ListenerViewModel* m_parent = nullptr;
rive::rcp<ViewModelInstanceValue> m_viewModelInstanceValue = nullptr;
void clearDataContext();
};
class ListenerViewModelPropertyBindingListener
: public ListenerViewModelPropertyBinding
{
public:
ListenerViewModelPropertyBindingListener(
ListenerViewModel* parent,
ViewModelInstanceValue* vmProp,
const StateMachineListenerSingle* listener);
void relinkDataBind() override;
private:
const StateMachineListenerSingle* m_listener;
};
class ListenerViewModelPropertyBindingInput
: public ListenerViewModelPropertyBinding
{
public:
ListenerViewModelPropertyBindingInput(
ListenerViewModel* parent,
ViewModelInstanceValue* vmProp,
const ListenerInputTypeViewModel* listenerInput);
void relinkDataBind() override;
private:
const ListenerInputTypeViewModel* m_listenerInput;
};
class ListenerViewModel
{
public:
virtual ~ListenerViewModel();
ListenerViewModel(StateMachineInstance* smInstance,
const StateMachineListener* listener) :
m_stateMachineInstance(smInstance), m_listener(listener)
{}
void clearDataContext() { m_propertyBindings.clear(); }
void bindFromContext(rcp<DataContext> dataContext)
{
m_dataContext = dataContext;
clearDataContext();
if (m_listener->is<StateMachineListenerSingle>())
{
auto vmProp = dataContext->getViewModelProperty(
m_listener->as<StateMachineListenerSingle>()->dataBindPath());
if (vmProp != nullptr)
{
m_propertyBindings.push_back(
std::make_unique<ListenerViewModelPropertyBindingListener>(
this,
vmProp,
m_listener->as<StateMachineListenerSingle>()));
}
}
else
{
size_t index = 0;
while (index < m_listener->listenerInputTypeCount())
{
auto listenerInputType = m_listener->listenerInputType(index);
if (listenerInputType->is<ListenerInputTypeViewModel>())
{
auto listenerInputTypeVM =
listenerInputType->as<ListenerInputTypeViewModel>();
auto vmProp = dataContext->getViewModelProperty(
listenerInputTypeVM->dataBindPath());
if (vmProp != nullptr)
{
m_propertyBindings.push_back(
std::make_unique<
ListenerViewModelPropertyBindingInput>(
this,
vmProp,
listenerInputTypeVM));
}
}
index++;
}
}
// A trigger fired before this bind (e.g. during script init) stays
// pending until the frame resets it; report it so it isn't lost.
for (auto& binding : m_propertyBindings)
{
auto value = binding->value();
if (value != nullptr && value->is<ViewModelInstanceTrigger>() &&
value->as<ViewModelInstanceTrigger>()->propertyValue() != 0)
{
reportToStateMachine(value);
}
}
}
void reportToStateMachine(ViewModelInstanceValue* value)
{
if (!value->is<ViewModelInstanceTrigger>() ||
value->as<ViewModelInstanceTrigger>()->propertyValue() != 0)
{
m_stateMachineInstance->reportListenerViewModel(this);
}
}
const StateMachineListener* listener() { return m_listener; }
DataContext* dataContext()
{
if (m_dataContext)
{
return m_dataContext.get();
}
return nullptr;
}
private:
StateMachineInstance* m_stateMachineInstance = nullptr;
const StateMachineListener* m_listener = nullptr;
rcp<DataContext> m_dataContext = nullptr;
std::vector<std::unique_ptr<ListenerViewModelPropertyBinding>>
m_propertyBindings;
};
ListenerViewModelPropertyBinding::ListenerViewModelPropertyBinding(
ListenerViewModel* parent,
ViewModelInstanceValue* vmProp) :
m_parent(parent), m_viewModelInstanceValue(rive::ref_rcp(vmProp))
{
vmProp->addDependent(this);
}
void ListenerViewModelPropertyBinding::relinkDataBind() {}
ListenerViewModelPropertyBinding::~ListenerViewModelPropertyBinding()
{
clearDataContext();
}
void ListenerViewModelPropertyBinding::clearDataContext()
{
if (m_viewModelInstanceValue != nullptr)
{
m_viewModelInstanceValue->removeDependent(this);
m_viewModelInstanceValue = nullptr;
}
}
ListenerViewModelPropertyBindingListener::
ListenerViewModelPropertyBindingListener(
ListenerViewModel* parent,
ViewModelInstanceValue* vmProp,
const StateMachineListenerSingle* listener) :
ListenerViewModelPropertyBinding(parent, vmProp), m_listener(listener)
{}
void ListenerViewModelPropertyBindingListener::relinkDataBind()
{
auto dataContext = m_parent->dataContext();
if (dataContext)
{
auto vmProp =
dataContext->getViewModelProperty(m_listener->dataBindPath());
if (vmProp != m_viewModelInstanceValue.get())
{
clearDataContext();
if (vmProp != nullptr)
{
m_viewModelInstanceValue = ref_rcp(vmProp);
vmProp->addDependent(this);
}
}
}
}
ListenerViewModelPropertyBindingInput::ListenerViewModelPropertyBindingInput(
ListenerViewModel* parent,
ViewModelInstanceValue* vmProp,
const ListenerInputTypeViewModel* listenerInput) :
ListenerViewModelPropertyBinding(parent, vmProp),
m_listenerInput(listenerInput)
{}
void ListenerViewModelPropertyBindingInput::relinkDataBind()
{
auto dataContext = m_parent->dataContext();
if (dataContext)
{
auto vmProp =
dataContext->getViewModelProperty(m_listenerInput->dataBindPath());
if (vmProp != m_viewModelInstanceValue.get())
{
clearDataContext();
if (vmProp != nullptr)
{
m_viewModelInstanceValue = ref_rcp(vmProp);
vmProp->addDependent(this);
}
}
}
}
void ListenerViewModelPropertyBinding::addDirt(ComponentDirt value,
bool recurse)
{
if (m_parent != nullptr && m_viewModelInstanceValue != nullptr)
{
m_parent->reportToStateMachine(m_viewModelInstanceValue.get());
}
}
ListenerViewModel::~ListenerViewModel() { clearDataContext(); }
} // namespace rive
HitResult StateMachineInstance::updateListeners(Vec2D position,
ListenerType hitType,
int pointerId,
float timeStamp)
{
if (m_artboardInstance->frameOrigin())
{
position -= Vec2D(
m_artboardInstance->originX() * m_artboardInstance->layoutWidth(),
m_artboardInstance->originY() * m_artboardInstance->layoutHeight());
}
// Invert the artboard's own rotation/scale (applied in drawInternal after
// the frame-origin translation) so listener hit-testing maps into content
// space. Mirrors the adjustment in hitTest(Vec2D).
if (m_artboardInstance->hasSelfTransform())
{
Mat2D inverse;
if (m_artboardInstance->selfTransform().invert(&inverse))
{
position = inverse * position;
}
}
// First reset all listener groups before processing the events
for (const auto& listenerGroup : m_listenerGroups)
{
listenerGroup.get()->reset(pointerId);
}
// Next prepare the event to set the common hover status for each group
for (const auto& hitShape : m_hitComponents)
{
hitShape->prepareEvent(position, hitType, pointerId);
}
bool hitSomething = false;
bool hitOpaque = false;
// Process the events
for (const auto& hitShape : m_hitComponents)
{
HitResult hitResult = hitShape->processEvent(position,
hitType,
!hitOpaque,
timeStamp,
pointerId);
if (hitResult != HitResult::none)
{
hitSomething = true;
if (hitResult == HitResult::hitOpaque)
{
hitOpaque = true;
}
}
}
// Finally release events that are complete
if (hitType == ListenerType::exit)
{
for (const auto& listenerGroup : m_listenerGroups)
{
listenerGroup.get()->releaseEvent(pointerId);
}
}
return hitSomething ? hitOpaque ? HitResult::hitOpaque : HitResult::hit
: HitResult::none;
}
bool StateMachineInstance::hitTest(Vec2D position) const
{
if (m_artboardInstance->frameOrigin())
{
position -= Vec2D(
m_artboardInstance->originX() * m_artboardInstance->layoutWidth(),
m_artboardInstance->originY() * m_artboardInstance->layoutHeight());
}
// Invert the artboard's own rotation/scale (applied in drawInternal after
// the frame-origin translation) so the pointer maps into content space.
// Covers nested state machines too, which funnel through here.
if (m_artboardInstance->hasSelfTransform())
{
Mat2D inverse;
if (m_artboardInstance->selfTransform().invert(&inverse))
{
position = inverse * position;
}
}
for (const auto& hitShape : m_hitComponents)
{
// TODO: quick reject.
if (hitShape->hitTest(position))
{
return true;
}
}
return false;
}
HitResult StateMachineInstance::pointerMove(Vec2D position,
float timeStamp,
int id)
{
return updateListeners(position, ListenerType::move, id, timeStamp);
}
HitResult StateMachineInstance::pointerDown(Vec2D position, int id)
{
return updateListeners(position, ListenerType::down, id);
}
HitResult StateMachineInstance::pointerUp(Vec2D position, int id)
{
return updateListeners(position, ListenerType::up, id);
}
HitResult StateMachineInstance::pointerExit(Vec2D position, int id)
{
return updateListeners(position, ListenerType::exit, id);
}
HitResult StateMachineInstance::dragStart(Vec2D position,
float timeStamp,
bool disablePointer,
int pointerId)
{
if (disablePointer)
{
disablePointerEvents(pointerId);
}
auto hit = updateListeners(position, ListenerType::dragStart, pointerId);
return hit;
}
HitResult StateMachineInstance::dragEnd(Vec2D position,
float timeStamp,
int pointerId)
{
enablePointerEvents(pointerId);
auto hit = updateListeners(position, ListenerType::dragEnd, pointerId);
pointerMove(position, timeStamp, pointerId);
return hit;
}
#ifdef TESTING
const LayerState* StateMachineInstance::layerState(size_t index)
{
if (index < m_machine->layerCount())
{
return m_layers[index].currentState();
}
return nullptr;
}
#endif
void StateMachineInstance::addToHitLookup(
Component* target,
bool isLayoutComponent,
std::unordered_map<Component*, HitDrawable*>& hitLookup,
ListenerGroup* listenerGroup,
bool isOpaque)
{
// target could either be a LayoutComponent or a DrawableProxy
if (isLayoutComponent)
{
HitLayout* hitLayout;
auto itr = hitLookup.find(target);
if (itr == hitLookup.end())
{
auto hs = std::make_unique<HitLayout>(target->as<Drawable>(),
this,
isOpaque);
hitLookup[target] = hitLayout = hs.get();
m_hitComponents.push_back(std::move(hs));
}
else
{
hitLayout = static_cast<HitLayout*>(itr->second);
}
hitLayout->addListener(listenerGroup);
if (isOpaque)
{
hitLayout->isOpaque = true;
}
return;
}
if (target->is<Shape>())
{
HitExpandable* hitShape;
auto itr = hitLookup.find(target);
if (itr == hitLookup.end())
{
Shape* shape = target->as<Shape>();
shape->addFlags(PathFlags::neverDeferUpdate);
shape->addDirt(ComponentDirt::Path, true);
auto hs = std::make_unique<HitExpandable>(shape, shape, this);
hitLookup[target] = hitShape = hs.get();
m_hitComponents.push_back(std::move(hs));
}
else
{
hitShape = static_cast<HitExpandable*>(itr->second);
}
hitShape->addListener(listenerGroup);
return;
}
if (target->is<TextValueRun>())
{
HitTextRun* hitTextRun;
auto itr = hitLookup.find(target);
if (itr == hitLookup.end())
{
TextValueRun* run = target->as<TextValueRun>();
run->textComponent()->addDirt(ComponentDirt::Path, true);
auto hs =
std::make_unique<HitTextRun>(run->textComponent(), run, this);
hitLookup[target] = hitTextRun = hs.get();
m_hitComponents.push_back(std::move(hs));
}
else
{
hitTextRun = static_cast<HitTextRun*>(itr->second);
}
hitTextRun->addListener(listenerGroup);
return;
}
if (target->is<ContainerComponent>())
{
target->as<ContainerComponent>()->forEachChild([&](Component* child) {
addToHitLookup(child,
child->is<LayoutComponent>(),
hitLookup,
listenerGroup,
isOpaque);
return false;
});
return;
}
}
StateMachineInstance::StateMachineInstance(const StateMachine* machine,
ArtboardInstance* instance) :
Scene(instance), m_machine(machine)
{
const auto count = machine->inputCount();
m_inputInstances.resize(count);
for (size_t i = 0; i < count; i++)
{
auto input = machine->input(i);
if (input == nullptr)
{
continue;
}
switch (input->coreType())
{
case StateMachineBool::typeKey:
m_inputInstances[i] =
new SMIBool(input->as<StateMachineBool>(), this);
break;
case StateMachineNumber::typeKey:
m_inputInstances[i] =
new SMINumber(input->as<StateMachineNumber>(), this);
break;
case StateMachineTrigger::typeKey:
m_inputInstances[i] =
new SMITrigger(input->as<StateMachineTrigger>(), this);
break;
default:
// Sanity check.
break;
}
#ifdef WITH_RIVE_TOOLS
auto instance = m_inputInstances[i];
if (instance != nullptr)
{
instance->m_index = i;
}
#endif
}
m_layerCount = static_cast<uint32_t>(machine->layerCount());
m_layers = new StateMachineLayerInstance[m_layerCount];
for (size_t i = 0; i < m_layerCount; i++)
{
m_layers[i].init(this, machine->layer(i), m_artboardInstance);
}
// Initialize dataBinds. All databinds are cloned for the state machine
// instance. That enables binding each instance to its own context without
// polluting the rest.
auto dataBindCount = machine->dataBindCount();
for (size_t i = 0; i < dataBindCount; i++)
{
auto dataBind = machine->dataBind(i);
if (!dataBind->target())
{
continue;
}
auto dataBindClone = static_cast<DataBind*>(dataBind->clone());
dataBindClone->file(dataBind->file());
if (dataBind->converter() != nullptr)
{
dataBindClone->converter(
dataBind->converter()->clone()->as<DataConverter>());
}
addDataBind(dataBindClone);
if (dataBind->target()->is<BindableProperty>())
{
auto& bindables = ensureBindables();
auto bindableProperty = dataBind->target()->as<BindableProperty>();
auto bindablePropertyInstance =
bindables.propertyInstances.find(bindableProperty);
BindableProperty* bindablePropertyClone;
if (bindablePropertyInstance == bindables.propertyInstances.end())
{
bindablePropertyClone =
bindableProperty->clone()->as<BindableProperty>();
bindables.propertyInstances[bindableProperty] =
bindablePropertyClone;
}
else
{
bindablePropertyClone = bindablePropertyInstance->second;
}
dataBindClone->target(bindablePropertyClone);
// We are only storing in this unordered map data binds that are
// targetting the source. For now, this is only the case for
// listener actions.
if ((static_cast<DataBindFlags>(dataBindClone->flags()) &
DataBindFlags::ToSource) == DataBindFlags::ToSource)
{
bindables.dataBindsToSource[bindablePropertyClone] =
dataBindClone;
}
else
{
bindables.dataBindsToTarget[bindablePropertyClone] =
dataBindClone;
}
}
else
{
auto* originalTarget = dataBind->target();
dataBindClone->target(originalTarget);
if (originalTarget->is<StateTransitionBase>())
{
// Create a per-instance BindablePropertyNumber to
// receive the data-bound value instead of writing
// to the shared StateTransition. Swap the target
// and propertyKey so the normal apply() path writes
// to our instance-local property.
auto* prop = new BindablePropertyNumber();
auto& transitionProps =
ensureBindables().transitionPropertyInstances;
transitionProps[originalTarget][dataBind->propertyKey()] = prop;
dataBindClone->target(prop);
dataBindClone->propertyKey(
BindablePropertyNumberBase::propertyValuePropertyKey);
}
}
}
// Initialize listeners. Store a lookup table of shape id to hit shape
// representation (an object that stores all the listeners triggered by the
// shape producing a listener).
std::unordered_map<Component*, HitDrawable*> hitLookup;
for (std::size_t i = 0; i < machine->listenerCount(); i++)
{
auto listener = machine->listener(i);
if (listener->hasListener(ListenerType::event))
{
continue;
}
if (listener->hasListener(ListenerType::viewModel))
{
auto vmListener = new ListenerViewModel(this, listener);
ensureReporting().listenerViewModels.push_back(vmListener);
continue;
}
// Handle focus/blur listeners - they're driven by FocusManager,
// not pointer events.
if (listener->hasListener(ListenerType::focus) ||
listener->hasListener(ListenerType::blur))
{
auto target = m_artboardInstance->resolve(listener->targetId());
if (target != nullptr && target->is<Node>())
{
auto node = target->as<Node>();
// Find FocusData child of the node
FocusData* focusData = nullptr;
for (auto child : node->children())
{
if (child->is<FocusData>())
{
focusData = child->as<FocusData>();
break;
}
}
if (focusData != nullptr)
{
auto focusGroup =
std::make_unique<FocusListenerGroup>(focusData,
listener,
this);
ensureInputExtras().focusListenerGroups.push_back(
std::move(focusGroup));
}
}
}
if (listener->hasListener(ListenerType::keyboard) ||
listener->hasListener(ListenerType::textInput))
{
auto target = m_artboardInstance->resolve(listener->targetId());
if (target != nullptr && target->is<Node>())
{
auto node = target->as<Node>();
// Find FocusData child of the node
FocusData* focusData = nullptr;
for (auto child : node->children())
{
if (child->is<FocusData>())
{
focusData = child->as<FocusData>();
break;
}
}
if (focusData != nullptr)
{
auto keyboardGroup =
std::make_unique<KeyboardListenerGroup>(focusData,
listener,
this);
ensureInputExtras().keyboardListenerGroups.push_back(
std::move(keyboardGroup));
}
}
}
// Semantic listeners are driven by accessibility actions rather
// than pointer events. The editor enforces that the listener's
// target Node owns a SemanticData child directly; no ancestor
// walk is performed here.
if (listener->hasListener(ListenerType::semanticAction))
{
auto target = m_artboardInstance->resolve(listener->targetId());
if (target != nullptr && target->is<Node>())
{
for (auto* child : target->as<Node>()->children())
{
if (child->is<SemanticData>())
{
ensureInputExtras().semanticListenerGroups.push_back(
std::make_unique<SemanticListenerGroup>(
child->as<SemanticData>(),
listener,
this));
break;
}
}
}
}
if (listener->hasPointerListeners())
{
auto listenerGroup = std::make_unique<ListenerGroup>(listener);
auto target = m_artboardInstance->resolve(listener->targetId());
if (target != nullptr && target->is<Component>())
{
bool isLayoutComponent = false;
if (target->is<LayoutComponent>())
{
isLayoutComponent = true;
target = target->as<LayoutComponent>()->proxy();
}
addToHitLookup(target->as<Component>(),
isLayoutComponent,
hitLookup,
listenerGroup.get(),
false);
}
m_listenerGroups.push_back(std::move(listenerGroup));
}
if (listener->hasListener(ListenerType::gamepad))
{
auto target = m_artboardInstance->resolve(listener->targetId());
if (target != nullptr && target->is<Node>())
{
auto node = target->as<Node>();
FocusData* focusData = nullptr;
for (auto child : node->children())
{
if (child->is<FocusData>())
{
focusData = child->as<FocusData>();
break;
}
}
if (focusData != nullptr)
{
auto gamepadGroup =
std::make_unique<GamepadListenerGroup>(focusData,
listener,
this);
ensureInputExtras().gamepadListenerGroups.push_back(
std::move(gamepadGroup));
}
}
}
}
std::vector<ListenerGroupProvider*> componentProvidedListenerGroups;
for (auto core : m_artboardInstance->objects())
{
if (core == nullptr)
{
continue;
}
auto provider = ListenerGroupProvider::from(core);
if (provider != nullptr)
{
componentProvidedListenerGroups.push_back(provider);
}
}
for (auto component : componentProvidedListenerGroups)
{
auto groupsWithTargets = component->listenerGroups();
for (auto groupWithTargets : groupsWithTargets)
{
auto group = groupWithTargets->group();
auto targets = groupWithTargets->targets();
for (auto target : targets)
{
auto component = target->component();
bool isLayoutComponent = component->is<LayoutComponent>() ||
(component->is<Drawable>() &&
component->as<Drawable>()->isProxy());
addToHitLookup(target->component(),
isLayoutComponent,
hitLookup,
group,
target->isOpaque());
}
m_listenerGroups.push_back(std::unique_ptr<ListenerGroup>(group));
for (auto target : targets)
{
delete target;
}
delete groupWithTargets;
}
auto hitComponents = component->hitComponents(this);
for (auto* hitComponent : hitComponents)
{
m_hitComponents.push_back(
std::unique_ptr<HitComponent>(hitComponent));
}
}
for (auto nestedArtboard : instance->nestedArtboards())
{
// TODO: @hernan as an optimization only create a HitNestedArtboard if
// the nested artboard has state machines or if it is bound via data
// binding
auto hn =
std::make_unique<HitNestedArtboard>(nestedArtboard->as<Component>(),
this);
m_hitComponents.push_back(std::move(hn));
for (auto animation : nestedArtboard->nestedAnimations())
{
if (animation->is<NestedStateMachine>())
{
if (auto notifier = animation->as<NestedStateMachine>()
->stateMachineInstance())
{
notifier->setNestedArtboard(nestedArtboard);
notifier->addNestedEventListener(this);
}
}
else if (animation->is<NestedLinearAnimation>())
{
if (auto notifier = animation->as<NestedLinearAnimation>()
->animationInstance())
{
notifier->setNestedArtboard(nestedArtboard);
notifier->addNestedEventListener(this);
}
}
}
}
for (auto componentList : instance->artboardComponentLists())
{
auto hc =
std::make_unique<HitComponentList>(componentList->as<Component>(),
this);
m_hitComponents.push_back(std::move(hc));
}
#ifdef WITH_RIVE_TEXT
// Register TextInputs as hit targets for drag-to-select functionality
for (auto textInput : instance->objects<TextInput>())
{
auto textInputGroup =
std::make_unique<TextInputListenerGroup>(textInput, this);
auto hitExpandable = std::make_unique<HitExpandable>(
textInput->as<Drawable>(),
textInput->as<Component>(),
this,
true); // isOpaque - TextInput blocks hits behind it
hitExpandable->addListener(textInputGroup.get());
m_hitComponents.push_back(std::move(hitExpandable));
m_listenerGroups.push_back(std::move(textInputGroup));
}
#endif
// Initialize local instances of ScriptedObjects, in the state machine's
// authored order so every downstream walk (dataContext, Lua init) is
// deterministic.
auto sharedScriptedObjects = machine->scriptedObjects();
if (!sharedScriptedObjects.empty())
{
auto& scripting = ensureScripting();
scripting.objects.reserve(sharedScriptedObjects.size());
for (auto& scriptedOb : sharedScriptedObjects)
{
scripting.objects.emplace_back(
scriptedOb,
scriptedOb->cloneScriptedObject(this));
}
for (auto& scriptedPair : scripting.objects)
{
scriptedPair.second->dataContext(m_artboardInstance->dataContext());
}
initScriptedObjects();
}
// Register Scripted objects as keyboard and text targets when expected,
// and collect every scripted drawable that wants gamepad events so we can
// broadcast to it later regardless of focus.
for (auto object : instance->objects<ContainerComponent>())
{
auto scriptedObject = ScriptedObject::from(object);
if (!scriptedObject)
{
continue;
}
if (scriptedObject->wantsKeyboardInput() ||
scriptedObject->wantsTextInput())
{
for (auto& child : object->as<ContainerComponent>()->children())
{
if (child->is<FocusData>())
{
auto keyboardGroup =
std::make_unique<KeyboardListenerGroup>(
child->as<FocusData>(),
nullptr,
this);
ensureInputExtras().keyboardListenerGroups.push_back(
std::move(keyboardGroup));
break;
}
}
}
if ((scriptedObject->wantsGamePadConnect() ||
scriptedObject->wantsGamePadDisconnect() ||
scriptedObject->wantsGamePadEvent()) &&
object->is<ScriptedDrawable>())
{
ensureInputExtras().gamepadScriptedDrawables.push_back(
object->as<ScriptedDrawable>());
}
}
sortHitComponents();
}
FocusManager* StateMachineInstance::focusManager()
{
return m_artboardInstance != nullptr ? m_artboardInstance->focusManager()
: nullptr;
}
const FocusManager* StateMachineInstance::focusManager() const
{
return m_artboardInstance != nullptr ? m_artboardInstance->focusManager()
: nullptr;
}
SMIReporting& StateMachineInstance::ensureReporting()
{
return *m_reporting.ensureAllocated();
}
SMIBindables& StateMachineInstance::ensureBindables()
{
return *m_bindables.ensureAllocated();
}
SMIInputExtras& StateMachineInstance::ensureInputExtras()
{
return *m_inputExtras.ensureAllocated();
}
SMIScripting& StateMachineInstance::ensureScripting()
{
return *m_scripting.ensureAllocated();
}
SemanticManager* StateMachineInstance::semanticManager() const
{
auto* extras = inputExtras();
if (extras == nullptr)
{
return nullptr;
}
return extras->externalSemanticManager ? extras->externalSemanticManager
: extras->semanticManager.get();
}
ScriptedObject* StateMachineInstance::scriptedObject(
const ScriptedObject* source) const
{
auto* scripting = this->scripting();
return scripting != nullptr ? scripting->find(source) : nullptr;
}
StateMachineInstance::~StateMachineInstance()
{
// Clean up semantic tree BEFORE the internal SemanticManager is destroyed.
// Only needed when we own the manager; if external, the parent cleans up.
if (auto* extras = inputExtras())
{
if (extras->externalSemanticManager == nullptr &&
extras->semanticManager != nullptr && m_artboardInstance != nullptr)
{
m_artboardInstance->cleanupSemanticTree();
}
extras->embedderGamepads.clear();
}
unbind();
for (auto inst : m_inputInstances)
{
delete inst;
}
for (auto& listenerGroup : m_listenerGroups)
{
listenerGroup.reset();
}
deleteDataBinds();
delete[] m_layers;
// The bindable clones and per-transition property instances are raw-owning,
// so they are deleted here rather than by the cluster's destructor.
if (auto* bindables = m_bindables.get())
{
for (auto& pair : bindables->propertyInstances)
{
delete pair.second;
}
for (auto& outer : bindables->transitionPropertyInstances)
{
for (auto& inner : outer.second)
{
delete inner.second;
}
}
bindables->transitionPropertyInstances.clear();
bindables->propertyInstances.clear();
}
if (auto* reporting = this->reporting())
{
for (auto& listenerViewModel : reporting->listenerViewModels)
{
delete listenerViewModel;
}
reporting->listenerViewModels.clear();
}
if (auto* scripting = m_scripting.get())
{
for (auto& pair : scripting->objects)
{
delete pair.second;
}
scripting->objects.clear();
}
}
// When a state machine instanced by a higher level runtime is destroyed, we
// need to clean up all its references from the nested artboard children. The
// reason is that the artboard might still be kept alive and it might have
// invalid pointers. This is not necessary for nested state machines because
// they are destroyed altogether.
void StateMachineInstance::dispose() { removeEventListeners(); }
void StateMachineInstance::removeEventListeners()
{
if (m_artboardInstance != nullptr)
{
for (auto nestedArtboard : m_artboardInstance->nestedArtboards())
{
if (nestedArtboard == nullptr)
{
continue;
}
for (auto animation : nestedArtboard->nestedAnimations())
{
if (animation == nullptr)
{
continue;
}
if (animation->is<NestedStateMachine>())
{
if (auto notifier = animation->as<NestedStateMachine>()
->stateMachineInstance())
{
notifier->removeNestedEventListener(this);
}
}
else if (animation->is<NestedLinearAnimation>())
{
if (auto notifier = animation->as<NestedLinearAnimation>()
->animationInstance())
{
notifier->removeNestedEventListener(this);
}
}
}
}
}
}
#ifdef WITH_RIVE_TOOLS
void StateMachineInstance::onDataBindChanged(DataBindChanged callback)
{
// dataBinds() is the DataBindContainer base's list — the one addDataBind()
// actually fills. A same-named member used to shadow it here, and it was
// never written, so this callback silently never got installed.
for (auto databind : dataBinds())
{
databind->onChanged(callback);
}
}
#endif
void StateMachineInstance::sortHitComponents()
{
auto hitShapesCount = m_hitComponents.size();
auto currentSortedIndex = 0;
auto count = 0;
// Since the Artboard is not a drawable, we move all hit components
// pointing to the artboard to the front of the list
for (auto& comp : m_hitComponents)
{
if (comp->component() != nullptr && comp->component()->is<Artboard>())
{
if (currentSortedIndex != count)
{
std::iter_swap(m_hitComponents.begin() + currentSortedIndex,
m_hitComponents.begin() + count);
}
currentSortedIndex++;
}
count++;
}
Drawable* last = m_artboardInstance->firstDrawable();
if (last)
{
// walk to the end, so we can visit in reverse-order
while (last->prev)
{
last = last->prev;
}
}
for (auto drawable = last; drawable; drawable = drawable->next)
{
for (size_t i = currentSortedIndex; i < hitShapesCount; i++)
{
if (m_hitComponents[i]->component() == drawable)
{
if (currentSortedIndex != i)
{
std::iter_swap(m_hitComponents.begin() + currentSortedIndex,
m_hitComponents.begin() + i);
}
currentSortedIndex++;
}
}
if (currentSortedIndex == hitShapesCount)
{
break;
}
}
}
bool StateMachineInstance::tryChangeState()
{
updateDataBinds(false);
bool hasChangedState = false;
for (size_t i = 0; i < m_layerCount; i++)
{
if (m_layers[i].updateState())
{
hasChangedState = true;
}
}
return hasChangedState;
}
void StateMachineInstance::applyEvents()
{
auto* reporting = this->reporting();
if (reporting == nullptr)
{
// Nothing has ever reported on this instance, so there is provably
// nothing to apply and nothing stale to clear.
return;
}
reporting->eventsAppliedDuringLoop.clear();
int maxIterations = 100;
int currentIteration = 0;
while ((reporting->reportedEvents.size() > 0 ||
reporting->reportedListenerViewModels.size() > 0) &&
currentIteration++ < maxIterations)
{
updateDataBinds(false);
// The reported/reporting split is load-bearing: notifying below can
// re-enter reportEvent(), and those events must queue for the next
// pass rather than mutate the batch being delivered.
reporting->reportingEvents = reporting->reportedEvents;
reporting->reportingListenerViewModels =
reporting->reportedListenerViewModels;
reporting->reportedEvents.clear();
reporting->reportedListenerViewModels.clear();
if (currentIteration > 1)
{
// These were reported during the loop, so no host has seen them
// yet; keep them visible until the next applyEvents.
reporting->eventsAppliedDuringLoop.insert(
reporting->eventsAppliedDuringLoop.end(),
reporting->reportingEvents.begin(),
reporting->reportingEvents.end());
}
this->notifyEventListeners(reporting->reportingEvents, nullptr);
this->notifyListenerViewModels(reporting->reportingListenerViewModels);
}
if (currentIteration >= maxIterations)
{
fprintf(stderr,
"%s StateMachine exceeded max event iterations"
"on artboard %s\n",
stateMachine()->name().c_str(),
artboard()->name().c_str());
}
}
void StateMachineInstance::setExternalFocusManager(FocusManager* manager)
{
if (m_artboardInstance != nullptr)
{
m_artboardInstance->adoptFocusManager(manager);
}
}
void StateMachineInstance::enableSemantics()
{
if (semanticManager() != nullptr)
{
return;
}
ensureInputExtras().semanticManager = std::make_unique<SemanticManager>();
if (m_artboardInstance != nullptr)
{
m_artboardInstance->buildSemanticTree(semanticManager(), nullptr);
}
}
void StateMachineInstance::setExternalSemanticManager(
SemanticManager* manager,
rcp<SemanticNode> parentNode)
{
// An unallocated cluster means no external manager is set, so clearing one
// on such an instance is a no-op — check before allocating.
auto* existing = inputExtras();
if ((existing != nullptr ? existing->externalSemanticManager : nullptr) ==
manager)
{
return;
}
auto& extras = ensureInputExtras();
// Clean up the old semantic tree if one was built with a different manager.
if (m_artboardInstance != nullptr &&
m_artboardInstance->semanticManager() != nullptr)
{
m_artboardInstance->cleanupSemanticTree();
}
extras.externalSemanticManager = manager;
// Rebuild with the new manager. semanticManager() now returns the external
// manager if set, or the internal one if null.
if (m_artboardInstance != nullptr)
{
m_artboardInstance->buildSemanticTree(semanticManager(), parentNode);
}
}
void StateMachineInstance::queueFocusEvent(FocusListenerGroup* group,
bool isFocus)
{
ensureInputExtras().queuedFocusEvents.push_back({group, isFocus});
m_needsAdvance = true;
}
void StateMachineInstance::setFocus(FocusData* focusData)
{
if (!focusManager())
{
return;
}
if (focusData != nullptr)
{
auto node = focusData->focusNode();
auto* fm = focusManager();
fm->setFocus(node);
}
else
{
focusManager()->clearFocus();
}
}
StateMachineInstance::FocusState StateMachineInstance::focusState() const
{
FocusState state;
const FocusManager* fm = focusManager();
if (fm == nullptr)
{
return state;
}
// primaryFocusPtr() avoids a refcount bump on this poll-friendly path.
FocusNode* focus = fm->primaryFocusPtr();
if (focus == nullptr)
{
return state;
}
state.hasFocus = true;
if (Focusable* focusable = focus->focusable())
{
state.expectsKeyboardInput = focusable->acceptsKeyboardInput();
}
return state;
}
const Artboard* StateMachineInstance::rootArtboard() const
{
const Artboard* artboard = m_artboardInstance;
while (artboard != nullptr && artboard->host() != nullptr &&
artboard->host()->parentArtboard() != nullptr)
{
artboard = artboard->host()->parentArtboard();
}
return artboard;
}
void StateMachineInstance::queueFocusTarget(FocusData* focusData)
{
if (focusData == nullptr)
{
return;
}
if (!focusManager())
{
return;
}
focusManager()->requestFocus(focusData->focusNode(), rootArtboard());
m_needsAdvance = true;
}
void StateMachineInstance::queueClearFocus()
{
if (!focusManager())
{
return;
}
focusManager()->requestClearFocus(rootArtboard());
m_needsAdvance = true;
}
void StateMachineInstance::queueFocusTraversal(uint32_t traversalKind)
{
if (!focusManager())
{
return;
}
focusManager()->requestTraversal(traversalKind, rootArtboard());
m_needsAdvance = true;
}
void StateMachineInstance::processFocusEvents()
{
auto* extras = inputExtras();
if (extras == nullptr || extras->queuedFocusEvents.empty())
{
return;
}
// Moved out before dispatch: a listener action can queue further focus
// events, and those belong to the next advance, not this drain.
auto events = std::move(extras->queuedFocusEvents);
extras->queuedFocusEvents.clear();
for (const auto& event : events)
{
auto listener = event.group->listener();
bool isFocusEvent = event.isFocus;
// Match listener type to event type
if ((isFocusEvent && listener->hasListener(ListenerType::focus)) ||
(!isFocusEvent && listener->hasListener(ListenerType::blur)))
{
listener->performChanges(
this,
ListenerInvocation::focus(event.group, event.isFocus));
}
}
}
void StateMachineInstance::queueSemanticEvent(SemanticListenerGroup* group,
SemanticActionType actionType)
{
ensureInputExtras().queuedSemanticEvents.push_back({group, actionType});
m_needsAdvance = true;
}
void StateMachineInstance::processSemanticEvents()
{
auto* extras = inputExtras();
if (extras == nullptr || extras->queuedSemanticEvents.empty())
{
return;
}
auto events = std::move(extras->queuedSemanticEvents);
extras->queuedSemanticEvents.clear();
for (const auto& event : events)
{
if (event.group == nullptr)
{
continue;
}
auto* listener = event.group->listener();
if (listener == nullptr)
{
continue;
}
listener->performChanges(
this,
ListenerInvocation::semantic(event.group, event.actionType));
}
}
void StateMachineInstance::fireSemanticAction(uint32_t semanticNodeId,
SemanticActionType actionType)
{
// The unified SemanticManager indexes every SD in the tree — top-level,
// nested-artboard, and data-bound list items — so this lookup handles
// all dispatch targets uniformly. SemanticData::fire*() routes the
// event to listeners, which queue on their own owning state machine.
auto* mgr = semanticManager();
if (mgr == nullptr)
{
return;
}
auto* node = mgr->nodeById(semanticNodeId);
if (node == nullptr)
{
return;
}
auto* sd = node->semanticData();
if (sd == nullptr)
{
// Boundary nodes have no owning SemanticData.
return;
}
switch (actionType)
{
case SemanticActionType::tap:
sd->fireSemanticTap();
break;
case SemanticActionType::increase:
sd->fireSemanticIncrease();
break;
case SemanticActionType::decrease:
sd->fireSemanticDecrease();
break;
}
}
bool StateMachineInstance::advance(float seconds, bool newFrame)
{
RIVE_PROF_SCOPE()
if (m_drawOrderChangeCounter !=
m_artboardInstance->drawOrderChangeCounter())
{
m_drawOrderChangeCounter = m_artboardInstance->drawOrderChangeCounter();
sortHitComponents();
}
if (newFrame)
{
processFocusEvents();
processSemanticEvents();
applyEvents();
m_needsAdvance = false;
}
updateDataBinds(false);
for (size_t i = 0; i < m_layerCount; i++)
{
if (m_layers[i].advance(seconds, newFrame))
{
m_needsAdvance = true;
}
}
if (advanceDataBinds(seconds))
{
m_needsAdvance = true;
}
if (m_inputInstances.size() > 0)
{
for (auto inst : m_inputInstances)
{
inst->advanced();
}
}
return m_needsAdvance || hasPendingReports();
}
void StateMachineInstance::advancedDataContext()
{
if (m_DataContext != nullptr)
{
m_DataContext->advanced();
}
}
void StateMachineInstance::reset()
{
advancedDataContext();
m_artboardInstance->reset();
}
bool StateMachineInstance::advanceAndApply(float seconds)
{
return advanceAndApply(seconds, true);
}
bool StateMachineInstance::advanceAndApply(float seconds,
bool advanceViewModels)
{
RIVE_PROF_SCOPE_L(1)
// Advancing by 0 could return false, when it shouldn't. Force keepGoing
// to true.
bool keepGoing = this->advance(seconds, true) || seconds == 0.0f;
if (focusManager())
{
focusManager()->dropFocusIfFocusTargetHidden();
}
if (m_artboardInstance->advanceInternal(
seconds,
AdvanceFlags::IsRoot | AdvanceFlags::Animate |
AdvanceFlags::AdvanceNested | AdvanceFlags::NewFrame))
{
keepGoing = true;
}
for (int outerOptionC = 0; outerOptionC < 5; outerOptionC++)
{
if (m_artboardInstance->updatePass(true))
{
keepGoing = true;
}
// Authoritative drain: updatePass has recomputed renderOpacity and
// propagated collapse, so target eligibility can be measured against
// real values. Reaches nested artboards and artboard-component-list
// items too, since they share this manager. A target can still need
// several passes to settle, so a request that doesn't take here is
// kept for the next iteration.
if (focusManager())
{
focusManager()->processPendingFocusRequests(rootArtboard());
focusManager()->dropFocusIfFocusTargetHidden(rootArtboard());
focusManager()->descendFocusToLeaf(rootArtboard());
}
// Advance all animations.
if (this->tryChangeState())
{
this->advance(0.0f, false);
keepGoing = true;
}
if (m_artboardInstance->advanceInternal(
0.0f,
AdvanceFlags::IsRoot | AdvanceFlags::Animate |
AdvanceFlags::AdvanceNested))
{
keepGoing = true;
}
if (advanceViewModels)
{
reset(); // advancedDataContext() (VM consume) + artboard reset
}
else
{
m_artboardInstance->reset(); // artboard component reset only
}
if (!m_artboardInstance->hasDirt(ComponentDirt::Components))
{
break;
}
}
// Last chance for this frame: picks up a request queued by the loop's
// final tryChangeState, and drops anything that still can't take so an
// unreachable target doesn't leave a request queued indefinitely.
if (focusManager())
{
focusManager()->finishPendingFocusRequests(rootArtboard());
}
if (advanceViewModels)
{
// Advance detached scripted view models (created via scripts, not part
// of the bound view model tree) at the end of the frame.
m_artboardInstance->advanceScriptedViewModels();
}
return keepGoing || hasPendingReports();
}
void StateMachineInstance::markNeedsAdvance() { m_needsAdvance = true; }
bool StateMachineInstance::needsAdvance() const { return m_needsAdvance; }
void StateMachineInstance::resetState()
{
for (size_t i = 0; i < m_layerCount; i++)
{
m_layers[i].resetState();
}
}
std::string StateMachineInstance::name() const { return m_machine->name(); }
SMIInput* StateMachineInstance::input(size_t index) const
{
if (index < m_inputInstances.size())
{
return m_inputInstances[index];
}
return nullptr;
}
template <typename SMType, typename InstType>
InstType* StateMachineInstance::getNamedInput(const std::string& name) const
{
for (const auto inst : m_inputInstances)
{
auto input = inst->input();
if (input->is<SMType>() && input->name() == name)
{
return static_cast<InstType*>(inst);
}
}
return nullptr;
}
SMIBool* StateMachineInstance::getBool(const std::string& name) const
{
return getNamedInput<StateMachineBool, SMIBool>(name);
}
SMINumber* StateMachineInstance::getNumber(const std::string& name) const
{
return getNamedInput<StateMachineNumber, SMINumber>(name);
}
SMITrigger* StateMachineInstance::getTrigger(const std::string& name) const
{
return getNamedInput<StateMachineTrigger, SMITrigger>(name);
}
void StateMachineInstance::setViewModelInstance(
rcp<ViewModelInstance> viewModelInstance)
{
if (viewModelInstance == nullptr)
{
return;
}
if (m_DataContext == nullptr)
{
m_DataContext = make_rcp<DataContext>(viewModelInstance);
m_DataContext->addDependentContainer(this);
return;
}
// The data context re-points every attached container (this state machine,
// the artboard, and any sibling state machines sharing the context) off the
// old main and onto the new one.
m_DataContext->setMainViewModelInstance(viewModelInstance);
}
bool StateMachineInstance::setGlobalViewModelInstance(
const std::string& name,
rcp<ViewModelInstance> viewModelInstance)
{
// A null instance is allowed: it empties the named slot below.
auto file = m_artboardInstance->file();
if (file == nullptr)
{
return false;
}
// The slot is addressed by the named view model (its file index), not by
// the instance's own view model — so an override instance of a different
// view model can be placed on the slot.
uint32_t slotKey = file->viewModelId(name);
if (slotKey >= file->viewModelCount())
{
return false;
}
// Only global view models get a slot; a non-global name is not a valid
// global slot and must not be slotted.
auto slotViewModel = file->viewModel(slotKey);
if (slotViewModel == nullptr ||
static_cast<ViewModelType>(slotViewModel->viewModelType()) !=
ViewModelType::global)
{
return false;
}
if (m_DataContext == nullptr)
{
// Nothing to clear when there is no context yet; only create one when
// actually placing an instance.
if (viewModelInstance == nullptr)
{
return true;
}
m_DataContext = make_rcp<DataContext>(rcp<ViewModelInstance>(nullptr));
m_DataContext->addDependentContainer(this);
}
// The data context re-points every attached container off any previous
// instance occupying this slot and onto the new one (or empties the slot
// when the instance is null).
m_DataContext->setViewModelInstanceForSlot(slotKey, viewModelInstance);
return true;
}
void StateMachineInstance::bind()
{
if (m_DataContext == nullptr)
{
// No data context yet: create an empty one so the view model
// instances it needs can be completed on the fly below.
m_DataContext = make_rcp<DataContext>(rcp<ViewModelInstance>(nullptr));
m_DataContext->addDependentContainer(this);
}
// Make sure every view model instance the data context needs exists before
// it is applied: the main instance plus one for each global view model.
// Any that are missing are created (completed) on the fly.
completeViewModelInstances();
// Apply the current data context: rebind the artboard and state machine
// data binds in a single pass.
m_artboardInstance->internalDataContext(m_DataContext);
internalDataContext(m_DataContext);
}
void StateMachineInstance::completeViewModelInstances()
{
auto file = m_artboardInstance->file();
if (file == nullptr)
{
return;
}
// Ensure a main instance is present. The main is the entry not on the slot
// keys; if there is none, create the artboard's default and place it first.
if (m_DataContext->mainViewModelInstance() == nullptr)
{
auto main = file->createDefaultViewModelInstance(m_artboardInstance);
if (main != nullptr)
{
// setMainViewModelInstance re-points every attached container onto
// the new instance.
m_DataContext->setMainViewModelInstance(main);
}
}
// Ensure an instance exists for each global view model slot, creating any
// missing ones. Occupancy is checked by slot key, so a cross-view-model
// override already sitting in a slot is not treated as empty.
for (auto* viewModel : file->globalViewModels())
{
uint32_t slotKey = file->viewModelId(viewModel->name());
if (m_DataContext->instanceForSlot(slotKey) != nullptr)
{
continue;
}
auto instance = file->createDefaultViewModelInstance(viewModel);
if (instance != nullptr)
{
// setViewModelInstanceForSlot re-points every attached container
// onto the new instance.
m_DataContext->setViewModelInstanceForSlot(slotKey, instance);
}
}
}
void StateMachineInstance::bindViewModelInstance(
rcp<ViewModelInstance> viewModelInstance)
{
if (viewModelInstance == nullptr)
{
clearDataContext();
m_artboardInstance->unbind();
return;
}
setViewModelInstance(std::move(viewModelInstance));
bind();
}
rcp<ViewModelInstance> StateMachineInstance::globalViewModelInstance(
const std::string& name)
{
// Pure read: returns the instance in the named slot only if one has been
// set/bound; never creates.
if (m_DataContext == nullptr)
{
return nullptr;
}
auto file = m_artboardInstance->file();
if (file == nullptr)
{
return nullptr;
}
return m_DataContext->instanceForSlot(file->viewModelId(name));
}
void StateMachineInstance::bindDataContext(rcp<DataContext> dataContext)
{
clearDataContext();
dataContext->addDependentContainer(this);
m_artboardInstance->clearDataContext();
m_artboardInstance->internalDataContext(dataContext);
internalDataContext(dataContext);
}
void StateMachineInstance::inheritDataContext(rcp<DataContext> dataContext)
{
if (dataContext == nullptr)
{
return;
}
dataContext->addDependentContainer(this);
internalDataContext(dataContext);
}
void StateMachineInstance::dataContext(rcp<DataContext> dataContext)
{
clearDataContext();
internalDataContext(dataContext);
}
void StateMachineInstance::initScriptedObjects()
{
auto* scripting = m_scripting.get();
if (scripting == nullptr)
{
return;
}
for (auto& obj : scripting->objects)
{
if (obj.second->scriptAsset() != nullptr)
{
if (!obj.second->userLuaInitDone())
{
obj.second->scriptAsset()->initScriptedObject(obj.second);
}
obj.second->hydrateScriptInputs();
}
}
}
void StateMachineInstance::internalDataContext(rcp<DataContext> dataContext)
{
m_DataContext = dataContext;
bindDataBindsFromContext(dataContext.get());
if (auto* reporting = this->reporting())
{
for (auto listenerViewModel : reporting->listenerViewModels)
{
listenerViewModel->bindFromContext(dataContext);
}
}
if (auto* scripting = m_scripting.get())
{
for (auto& scriptedObjectItr : scripting->objects)
{
scriptedObjectItr.second->dataContext(dataContext);
}
}
initScriptedObjects();
}
void StateMachineInstance::rebind()
{
m_artboardInstance->clearDataContext();
m_artboardInstance->internalDataContext(m_DataContext);
internalDataContext(m_DataContext);
};
void StateMachineInstance::clearDataContext()
{
if (m_DataContext)
{
m_DataContext->removeDependentContainer(this);
m_DataContext = nullptr;
}
if (auto* reporting = this->reporting())
{
for (auto& listenerViewModel : reporting->listenerViewModels)
{
listenerViewModel->clearDataContext();
}
}
}
void StateMachineInstance::relinkDataContext()
{
m_artboardInstance->relinkDataContext();
}
void StateMachineInstance::rebuildDataBind(DataBind* dataBind)
{
if (dataBind->is<DataBindContext>())
{
dataBind->as<DataBindContext>()->bindFromContext(m_DataContext.get());
}
};
void StateMachineInstance::unbind()
{
clearDataContext();
unbindDataBinds();
}
size_t StateMachineInstance::stateChangedCount() const
{
size_t count = 0;
for (size_t i = 0; i < m_layerCount; i++)
{
if (m_layers[i].stateChangedOnAdvance())
{
count++;
}
}
return count;
}
const LayerState* StateMachineInstance::stateChangedByIndex(size_t index) const
{
size_t count = 0;
for (size_t i = 0; i < m_layerCount; i++)
{
if (m_layers[i].stateChangedOnAdvance())
{
if (count == index)
{
return m_layers[i].currentState();
}
count++;
}
}
return nullptr;
}
size_t StateMachineInstance::currentAnimationCount() const
{
size_t count = 0;
for (size_t i = 0; i < m_layerCount; i++)
{
if (m_layers[i].currentAnimation() != nullptr)
{
count++;
}
}
return count;
}
const LinearAnimationInstance* StateMachineInstance::currentAnimationByIndex(
size_t index) const
{
size_t count = 0;
for (size_t i = 0; i < m_layerCount; i++)
{
if (m_layers[i].currentAnimation() != nullptr)
{
if (count == index)
{
return m_layers[i].currentAnimation();
}
count++;
}
}
return nullptr;
}
bool StateMachineInstance::hasPendingReports() const
{
auto* reporting = this->reporting();
return reporting != nullptr &&
(!reporting->reportedEvents.empty() ||
!reporting->reportedListenerViewModels.empty());
}
void StateMachineInstance::reportEvent(Event* event, float delaySeconds)
{
ensureReporting().reportedEvents.push_back(
EventReport(event, delaySeconds));
}
void StateMachineInstance::reportListenerViewModel(
ListenerViewModel* listenerViewModel)
{
ensureReporting().reportedListenerViewModels.push_back(listenerViewModel);
}
std::size_t StateMachineInstance::reportedEventCount() const
{
auto* reporting = this->reporting();
if (reporting == nullptr)
{
return 0;
}
return reporting->eventsAppliedDuringLoop.size() +
reporting->reportedEvents.size();
}
const EventReport StateMachineInstance::reportedEventAt(std::size_t index) const
{
auto* reporting = this->reporting();
if (reporting == nullptr)
{
return EventReport(nullptr, 0.0f);
}
if (index < reporting->eventsAppliedDuringLoop.size())
{
return reporting->eventsAppliedDuringLoop[index];
}
index -= reporting->eventsAppliedDuringLoop.size();
if (index >= reporting->reportedEvents.size())
{
return EventReport(nullptr, 0.0f);
}
return reporting->reportedEvents[index];
}
void StateMachineInstance::notify(const std::vector<EventReport>& events,
NestedArtboard* context)
{
notifyEventListeners(events, context);
updateDataBinds(false);
}
void StateMachineInstance::notifyListenerViewModels(
const std::vector<ListenerViewModel*>& events)
{
if (events.size() > 0)
{
for (auto& listenerViewModel : events)
{
listenerViewModel->listener()->performChanges(
this,
ListenerInvocation::viewModelChange(listenerViewModel));
}
}
}
void StateMachineInstance::notifyEventListeners(
const std::vector<EventReport>& events,
NestedArtboard* source)
{
if (events.size() > 0)
{
// We trigger the listeners in order
for (size_t i = 0; i < m_machine->listenerCount(); i++)
{
auto listener = m_machine->listener(i);
auto target = artboard()->resolve(listener->targetId());
if (listener != nullptr &&
listener->hasListener(ListenerType::event) &&
(source == nullptr || source == target))
{
for (const auto event : events)
{
auto sourceArtboard = source == nullptr
? artboard()
: source->artboardInstance();
// NOTE: this issue can't happen anymore because a new
// fix in the editor prevents selecting other artboard
// as target. But the fix is kept here to fix older
// files. listener->eventId() can point to an id from an
// event in the context of this artboard or the
// context of a nested artboard. Because those ids
// belong to different contexts, they can have the
// same value. So when the eventId is resolved
// within one context, but actually pointing to the
// other, it can return the wrong event object. If,
// by chance, that event exists in the other
// context, and is being reported, it will trigger
// the wrong set of actions. This validation makes
// sure that a listener must be targetting the
// current artboard to disambiguate between external
// and internal events.
if (source == nullptr)
{
auto target =
sourceArtboard->resolve(listener->targetId());
if (target && target != artboard() &&
!target->is<Event>())
{
continue;
}
}
if (listener->is<StateMachineListenerSingle>())
{
auto listenerEvent = sourceArtboard->resolve(
listener->as<StateMachineListenerSingle>()
->eventId());
if (listenerEvent == event.event())
{
listener->performChanges(
this,
ListenerInvocation::reportedEvent(
event.event(),
event.secondsDelay()));
break;
}
}
else
{
size_t index = 0;
while (index < listener->listenerInputTypeCount())
{
auto listenerInputType =
listener->listenerInputType(index);
if (listenerInputType->is<ListenerInputTypeEvent>())
{
auto listenerInputTypeEvent =
listenerInputType
->as<ListenerInputTypeEvent>();
auto listenerEvent = sourceArtboard->resolve(
listenerInputTypeEvent->eventId());
if (listenerEvent == event.event())
{
listener->performChanges(
this,
ListenerInvocation::reportedEvent(
event.event(),
event.secondsDelay()));
break;
}
}
index += 1;
}
}
}
}
}
// Bubble the event up to parent artboard state machines
// immediately
for (auto listener : nestedEventListeners())
{
listener->notify(events, nestedArtboard());
}
for (auto report : events)
{
auto event = report.event();
if (event->is<AudioEvent>())
{
event->as<AudioEvent>()->play();
}
}
}
}
void StateMachineInstance::enablePointerEvents(int pointerId)
{
for (const auto& hitShape : m_hitComponents)
{
hitShape->enablePointerEvents(pointerId);
}
}
void StateMachineInstance::disablePointerEvents(int pointerId)
{
for (const auto& hitShape : m_hitComponents)
{
hitShape->disablePointerEvents(pointerId);
}
}
BindableProperty* StateMachineInstance::bindablePropertyInstance(
BindableProperty* bindableProperty) const
{
auto* bindables = this->bindables();
if (bindables == nullptr)
{
return nullptr;
}
auto bindablePropertyInstance =
bindables->propertyInstances.find(bindableProperty);
if (bindablePropertyInstance == bindables->propertyInstances.end())
{
return nullptr;
}
return bindablePropertyInstance->second;
}
DataBind* StateMachineInstance::bindableDataBindToSource(
BindableProperty* bindableProperty) const
{
auto* bindables = this->bindables();
if (bindables == nullptr)
{
return nullptr;
}
auto dataBind = bindables->dataBindsToSource.find(bindableProperty);
if (dataBind == bindables->dataBindsToSource.end())
{
return nullptr;
}
return dataBind->second;
}
DataBind* StateMachineInstance::bindableDataBindToTarget(
BindableProperty* bindableProperty) const
{
auto* bindables = this->bindables();
if (bindables == nullptr)
{
return nullptr;
}
auto dataBind = bindables->dataBindsToTarget.find(bindableProperty);
if (dataBind == bindables->dataBindsToTarget.end())
{
return nullptr;
}
return dataBind->second;
}
BindablePropertyNumber* StateMachineInstance::findTransitionPropertyInstance(
const StateTransition* transition,
uint32_t propertyKey) const
{
auto* bindables = this->bindables();
if (bindables == nullptr)
{
return nullptr;
}
auto it = bindables->transitionPropertyInstances.find(transition);
if (it != bindables->transitionPropertyInstances.end())
{
auto propIt = it->second.find(propertyKey);
if (propIt != it->second.end())
{
return propIt->second;
}
}
return nullptr;
}
bool StateMachineInstance::hasFocusNodes()
{
if (!focusManager())
{
return false;
}
auto* fm = focusManager();
return fm->hasFocusableContent();
}
bool StateMachineInstance::focusNext()
{
if (!focusManager())
{
return false;
}
auto* fm = focusManager();
return fm->focusNext();
}
bool StateMachineInstance::focusPrevious()
{
if (!focusManager())
{
return false;
}
auto* fm = focusManager();
return fm->focusPrevious();
}
void StateMachineInstance::clearFocus()
{
if (!focusManager())
{
return;
}
auto* fm = focusManager();
fm->clearFocus();
}
bool StateMachineInstance::keyInput(Key key,
KeyModifiers modifiers,
bool isPressed,
bool isRepeat)
{
if (!focusManager())
{
return false;
}
auto* fm = focusManager();
return fm->keyInput(key, modifiers, isPressed, isRepeat);
}
bool StateMachineInstance::textInput(const std::string& text)
{
if (!focusManager())
{
return false;
}
auto* fm = focusManager();
return fm->textInput(text);
}