deki-2d/ButtonComponent.cpp at master · dekiengine/deki-2d · GitHub

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#include"ButtonComponent.h"
#include"deki-input/InputCollider.h"
#include"DekiObject.h"
#include"DekiLogSystem.h"

ButtonComponent::ButtonComponent()
 : state(ButtonState::Normal),
 isEnabled(true),
 m_WasPressedInside(false)
{
}

ButtonComponent::~ButtonComponent()
{
}

voidButtonComponent::Start()
{
 InputCollider* collider = inputCollider.Get();
if (!collider)
 {
DEKI_LOG_WARNING("ButtonComponent: No InputCollider referenced on '%s'",
GetOwner()->GetName().c_str());
return;
 }

// Register pointer callbacks on InputCollider
 collider->onPointerDown.push_back([this](float x, float y) {
 (void)x; (void)y;
if (!isEnabled) return;
 m_WasPressedInside = true;
SetState(ButtonState::Pressed);
InvokeCallbacks(onPress);
 });

 collider->onPointerUp.push_back([this](float x, float y) {
 (void)x; (void)y;
if (!isEnabled) return;
if (m_WasPressedInside)
 {
InvokeCallbacks(onRelease);

// Click = was pressed inside and released inside collider
 InputCollider* col = inputCollider.Get();
if (col && col->IsPointerInside())
 {
SetState(ButtonState::Normal);
InvokeCallbacks(onClick);
 }
else
 {
SetState(ButtonState::Normal);
 }
 m_WasPressedInside = false;
 }
 });

 collider->onPointerEnter.push_back([this](float x, float y) {
 (void)x; (void)y;
if (!isEnabled) return;
if (!m_WasPressedInside)
 {
SetState(ButtonState::Hovered);
 }
 });

 collider->onPointerExit.push_back([this](float x, float y) {
 (void)x; (void)y;
if (!isEnabled) return;
if (m_WasPressedInside)
 {
SetState(ButtonState::Normal);
 }
elseif (state == ButtonState::Hovered)
 {
SetState(ButtonState::Normal);
 }
 });
}

voidButtonComponent::SetState(ButtonState new_state)
{
if (state == new_state)
return;

 ButtonState old_state = state;
 state = new_state;

// Trigger hover callbacks
if (old_state != ButtonState::Hovered && new_state == ButtonState::Hovered)
 {
InvokeCallbacks(onHoverEnter);
 }
elseif (old_state == ButtonState::Hovered && new_state != ButtonState::Hovered)
 {
InvokeCallbacks(onHoverExit);
 }

// Notify state change listeners
for (constauto& cb : on_state_changed)
 {
if (cb) cb(new_state);
 }
}

voidButtonComponent::SetEnabled(bool enabled)
{
 isEnabled = enabled;
if (!enabled)
 {
SetState(ButtonState::Disabled);
 m_WasPressedInside = false;
 }
elseif (state == ButtonState::Disabled)
 {
SetState(ButtonState::Normal);
 }
}


voidButtonComponent::AddOnClickCallback(const ButtonCallback& callback)
{
 onClick.push_back(callback);
}

voidButtonComponent::AddOnPressCallback(const ButtonCallback& callback)
{
 onPress.push_back(callback);
}

voidButtonComponent::AddOnReleaseCallback(const ButtonCallback& callback)
{
 onRelease.push_back(callback);
}

voidButtonComponent::AddOnHoverEnterCallback(const ButtonCallback& callback)
{
 onHoverEnter.push_back(callback);
}

voidButtonComponent::AddOnHoverExitCallback(const ButtonCallback& callback)
{
 onHoverExit.push_back(callback);
}

voidButtonComponent::AddOnStateChangedCallback(const std::function<void(ButtonState)>& callback)
{
 on_state_changed.push_back(callback);
}

voidButtonComponent::CancelPress()
{
if (m_WasPressedInside)
 {
 m_WasPressedInside = false;
SetState(ButtonState::Normal);
InvokeCallbacks(onRelease);
 }
}

voidButtonComponent::InvokeCallbacks(const std::vector<ButtonCallback>& callbacks)
{
for (constauto& cb : callbacks)
 {
if (cb) cb();
 }
}