XCEngine/new_editor/include/XCEditor/Collections/UIEditorScrollViewInteraction.h

#pragma once

#include <XCEditor/Collections/UIEditorScrollView.h>

#include <XCEngine/UI/Types.h>

#include <vector>

namespace XCEngine::UI::Editor {

struct UIEditorScrollViewInteractionState {
    Widgets::UIEditorScrollViewState scrollViewState = {};
    ::XCEngine::UI::UIPoint pointerPosition = {};
    float thumbDragStartPointerY = 0.0f;
    float thumbDragStartOffset = 0.0f;
    bool hasPointerPosition = false;
};

struct UIEditorScrollViewInteractionResult {
    bool consumed = false;
    bool offsetChanged = false;
    bool focusChanged = false;
    bool startedThumbDrag = false;
    bool endedThumbDrag = false;
    Widgets::UIEditorScrollViewHitTarget hitTarget = {};
    float verticalOffset = 0.0f;
};

struct UIEditorScrollViewInteractionFrame {
    Widgets::UIEditorScrollViewLayout layout = {};
    UIEditorScrollViewInteractionResult result = {};
};

UIEditorScrollViewInteractionFrame UpdateUIEditorScrollViewInteraction(
    UIEditorScrollViewInteractionState& state,
    float& verticalOffset,
    const ::XCEngine::UI::UIRect& bounds,
    float contentHeight,
    const std::vector<::XCEngine::UI::UIInputEvent>& inputEvents,
    const Widgets::UIEditorScrollViewMetrics& metrics = {});

} // namespace XCEngine::UI::Editor