XCEngine/editor/include/XCEditor/Fields/UIEditorVector2Field.h

#pragma once

#include <XCEditor/Foundation/UIEditorTextMeasurement.h>

#include <XCEngine/UI/DrawData.h>

#include <array>
#include <cstddef>
#include <cstdint>
#include <string>

namespace XCEngine::UI::Editor::Widgets {

inline constexpr std::size_t UIEditorVector2FieldInvalidComponentIndex = static_cast<std::size_t>(-1);

enum class UIEditorVector2FieldHitTargetKind : std::uint8_t {
    None = 0,
    Row,
    Component
};

struct UIEditorVector2FieldSpec {
    std::string fieldId = {};
    std::string label = {};
    std::array<double, 2u> values = { 0.0, 0.0 };
    std::array<std::string, 2u> componentLabels = { std::string("X"), std::string("Y") };
    double step = 0.1;
    double minValue = -1000000.0;
    double maxValue = 1000000.0;
    bool integerMode = false;
    bool readOnly = false;
};

struct UIEditorVector2FieldState {
    UIEditorVector2FieldHitTargetKind hoveredTarget = UIEditorVector2FieldHitTargetKind::None;
    UIEditorVector2FieldHitTargetKind activeTarget = UIEditorVector2FieldHitTargetKind::None;
    std::size_t hoveredComponentIndex = UIEditorVector2FieldInvalidComponentIndex;
    std::size_t activeComponentIndex = UIEditorVector2FieldInvalidComponentIndex;
    std::size_t selectedComponentIndex = UIEditorVector2FieldInvalidComponentIndex;
    bool focused = false;
    bool editing = false;
    std::size_t caretOffset = 0u;
    std::uint64_t caretBlinkStartNanoseconds = 0u;
    std::array<std::string, 2u> displayTexts = { std::string(), std::string() };
};

struct UIEditorVector2FieldMetrics {
    float rowHeight = 22.0f;
    float horizontalPadding = 12.0f;
    float labelControlGap = 20.0f;
    float controlColumnStart = 236.0f;
    float controlMinWidth = 0.0f;
    float controlTrailingInset = 8.0f;
    float controlInsetY = 1.0f;
    float componentGap = 6.0f;
    float componentMinWidth = 72.0f;
    float componentPrefixWidth = 9.0f;
    float componentLabelGap = 4.0f;
    float labelTextInsetY = 0.0f;
    float labelFontSize = 11.0f;
    float valueTextInsetX = 5.0f;
    float valueTextInsetY = 0.0f;
    float valueFontSize = 12.0f;
    float prefixTextInsetX = 0.0f;
    float prefixTextInsetY = -1.0f;
    float prefixFontSize = 11.0f;
    float cornerRounding = 0.0f;
    float componentRounding = 2.0f;
    float borderThickness = 1.0f;
    float focusedBorderThickness = 1.0f;
};

struct UIEditorVector2FieldPalette {
    ::XCEngine::UI::UIColor surfaceColor =
        ::XCEngine::UI::UIColor(0.0f, 0.0f, 0.0f, 0.0f);
    ::XCEngine::UI::UIColor borderColor =
        ::XCEngine::UI::UIColor(0.0f, 0.0f, 0.0f, 0.0f);
    ::XCEngine::UI::UIColor focusedBorderColor =
        ::XCEngine::UI::UIColor(0.0f, 0.0f, 0.0f, 0.0f);
    ::XCEngine::UI::UIColor rowHoverColor =
        ::XCEngine::UI::UIColor(0.0f, 0.0f, 0.0f, 0.0f);
    ::XCEngine::UI::UIColor rowActiveColor =
        ::XCEngine::UI::UIColor(0.0f, 0.0f, 0.0f, 0.0f);
    ::XCEngine::UI::UIColor componentColor =
        ::XCEngine::UI::UIColor(0.12f, 0.12f, 0.12f, 1.0f);
    ::XCEngine::UI::UIColor componentHoverColor =
        ::XCEngine::UI::UIColor(0.14f, 0.14f, 0.14f, 1.0f);
    ::XCEngine::UI::UIColor componentEditingColor =
        ::XCEngine::UI::UIColor(0.17f, 0.17f, 0.17f, 1.0f);
    ::XCEngine::UI::UIColor readOnlyColor =
        ::XCEngine::UI::UIColor(0.10f, 0.10f, 0.10f, 1.0f);
    ::XCEngine::UI::UIColor componentBorderColor =
        ::XCEngine::UI::UIColor(0.15f, 0.15f, 0.15f, 1.0f);
    ::XCEngine::UI::UIColor componentFocusedBorderColor =
        ::XCEngine::UI::UIColor(0.19f, 0.19f, 0.19f, 1.0f);
    ::XCEngine::UI::UIColor prefixColor =
        ::XCEngine::UI::UIColor(0.13f, 0.13f, 0.13f, 1.0f);
    ::XCEngine::UI::UIColor prefixBorderColor =
        ::XCEngine::UI::UIColor(0.15f, 0.15f, 0.15f, 1.0f);
    ::XCEngine::UI::UIColor labelColor =
        ::XCEngine::UI::UIColor(0.72f, 0.72f, 0.72f, 1.0f);
    ::XCEngine::UI::UIColor valueColor =
        ::XCEngine::UI::UIColor(0.92f, 0.92f, 0.92f, 1.0f);
    ::XCEngine::UI::UIColor readOnlyValueColor =
        ::XCEngine::UI::UIColor(0.60f, 0.60f, 0.60f, 1.0f);
    ::XCEngine::UI::UIColor axisXColor =
        ::XCEngine::UI::UIColor(0.78f, 0.42f, 0.42f, 1.0f);
    ::XCEngine::UI::UIColor axisYColor =
        ::XCEngine::UI::UIColor(0.56f, 0.72f, 0.46f, 1.0f);
};

struct UIEditorVector2FieldLayout {
    ::XCEngine::UI::UIRect bounds = {};
    ::XCEngine::UI::UIRect labelRect = {};
    ::XCEngine::UI::UIRect controlRect = {};
    std::array<::XCEngine::UI::UIRect, 2u> componentRects = {};
    std::array<::XCEngine::UI::UIRect, 2u> componentPrefixRects = {};
    std::array<::XCEngine::UI::UIRect, 2u> componentValueRects = {};
};

struct UIEditorVector2FieldHitTarget {
    UIEditorVector2FieldHitTargetKind kind = UIEditorVector2FieldHitTargetKind::None;
    std::size_t componentIndex = UIEditorVector2FieldInvalidComponentIndex;
};

bool IsUIEditorVector2FieldPointInside(
    const ::XCEngine::UI::UIRect& rect,
    const ::XCEngine::UI::UIPoint& point);

double NormalizeUIEditorVector2FieldComponentValue(
    const UIEditorVector2FieldSpec& spec,
    double value);

bool TryParseUIEditorVector2FieldComponentValue(
    const UIEditorVector2FieldSpec& spec,
    std::string_view text,
    double& outValue);

std::string FormatUIEditorVector2FieldComponentValue(
    const UIEditorVector2FieldSpec& spec,
    std::size_t componentIndex);

UIEditorVector2FieldLayout BuildUIEditorVector2FieldLayout(
    const ::XCEngine::UI::UIRect& bounds,
    const UIEditorVector2FieldSpec& spec,
    const UIEditorVector2FieldMetrics& metrics = {});

UIEditorVector2FieldHitTarget HitTestUIEditorVector2Field(
    const UIEditorVector2FieldLayout& layout,
    const ::XCEngine::UI::UIPoint& point);

void AppendUIEditorVector2FieldBackground(
    ::XCEngine::UI::UIDrawList& drawList,
    const UIEditorVector2FieldLayout& layout,
    const UIEditorVector2FieldSpec& spec,
    const UIEditorVector2FieldState& state,
    const UIEditorVector2FieldPalette& palette = {},
    const UIEditorVector2FieldMetrics& metrics = {});

void AppendUIEditorVector2FieldForeground(
    ::XCEngine::UI::UIDrawList& drawList,
    const UIEditorVector2FieldLayout& layout,
    const UIEditorVector2FieldSpec& spec,
    const UIEditorVector2FieldState& state,
    const UIEditorVector2FieldPalette& palette = {},
    const UIEditorVector2FieldMetrics& metrics = {},
    const ::XCEngine::UI::Editor::UIEditorTextMeasurer* textMeasurer = nullptr);

void AppendUIEditorVector2Field(
    ::XCEngine::UI::UIDrawList& drawList,
    const ::XCEngine::UI::UIRect& bounds,
    const UIEditorVector2FieldSpec& spec,
    const UIEditorVector2FieldState& state,
    const UIEditorVector2FieldPalette& palette = {},
    const UIEditorVector2FieldMetrics& metrics = {},
    const ::XCEngine::UI::Editor::UIEditorTextMeasurer* textMeasurer = nullptr);

} // namespace XCEngine::UI::Editor::Widgets