/// A color identifier for styling
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiCol {
    Text,
    TextDisabled,
    /// Background of normal windows
    WindowBg,
    /// Background of child windows
    ChildBg,
    /// Background of popups, menus, tooltips windows
    PopupBg,
    Border,
    BorderShadow,
    /// Background of checkbox, radio button, plot, slider, text input
    FrameBg,
    FrameBgHovered,
    FrameBgActive,
    TitleBg,
    TitleBgActive,
    TitleBgCollapsed,
    MenuBarBg,
    ScrollbarBg,
    ScrollbarGrab,
    ScrollbarGrabHovered,
    ScrollbarGrabActive,
    CheckMark,
    SliderGrab,
    SliderGrabActive,
    Button,
    ButtonHovered,
    ButtonActive,
    Header,
    HeaderHovered,
    HeaderActive,
    Separator,
    SeparatorHovered,
    SeparatorActive,
    ResizeGrip,
    ResizeGripHovered,
    ResizeGripActive,
    PlotLines,
    PlotLinesHovered,
    PlotHistogram,
    PlotHistogramHovered,
    TextSelectedBg,
    DragDropTarget,
    /// Gamepad/keyboard: current highlighted item
    NavHighlight,
    /// Highlight window when using CTRL+TAB
    NavWindowingHighlight,
    /// Darken/colorize entire screen behind the CTRL+TAB window list, when active
    NavWindowingDimBg,
    /// Darken/colorize entire screen behind a modal window, when one is active
    ModalWindowDimBg,
}
impl ImGuiCol {
    /// All possible `ImGuiCol` variants
    pub const VARIANTS: [ImGuiCol; 43] = [
        ImGuiCol::Text,
        ImGuiCol::TextDisabled,
        ImGuiCol::WindowBg,
        ImGuiCol::ChildBg,
        ImGuiCol::PopupBg,
        ImGuiCol::Border,
        ImGuiCol::BorderShadow,
        ImGuiCol::FrameBg,
        ImGuiCol::FrameBgHovered,
        ImGuiCol::FrameBgActive,
        ImGuiCol::TitleBg,
        ImGuiCol::TitleBgActive,
        ImGuiCol::TitleBgCollapsed,
        ImGuiCol::MenuBarBg,
        ImGuiCol::ScrollbarBg,
        ImGuiCol::ScrollbarGrab,
        ImGuiCol::ScrollbarGrabHovered,
        ImGuiCol::ScrollbarGrabActive,
        ImGuiCol::CheckMark,
        ImGuiCol::SliderGrab,
        ImGuiCol::SliderGrabActive,
        ImGuiCol::Button,
        ImGuiCol::ButtonHovered,
        ImGuiCol::ButtonActive,
        ImGuiCol::Header,
        ImGuiCol::HeaderHovered,
        ImGuiCol::HeaderActive,
        ImGuiCol::Separator,
        ImGuiCol::SeparatorHovered,
        ImGuiCol::SeparatorActive,
        ImGuiCol::ResizeGrip,
        ImGuiCol::ResizeGripHovered,
        ImGuiCol::ResizeGripActive,
        ImGuiCol::PlotLines,
        ImGuiCol::PlotLinesHovered,
        ImGuiCol::PlotHistogram,
        ImGuiCol::PlotHistogramHovered,
        ImGuiCol::TextSelectedBg,
        ImGuiCol::DragDropTarget,
        ImGuiCol::NavHighlight,
        ImGuiCol::NavWindowingHighlight,
        ImGuiCol::NavWindowingDimBg,
        ImGuiCol::ModalWindowDimBg,
    ];
    pub const COUNT: usize = 43;
}

/// A primary data type
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiDataType {
    /// `i32` (C data type `int`)
    S32,
    /// `u32` (C data type `unsigned int`)
    U32,
    /// `i64` (C data type `long long`, `__int64`)
    S64,
    /// `u64` (C data type `unsigned long long`, `unsigned __int64`)
    U64,
    /// `f32` (C data type `float`)
    Float,
    /// `f64` (C data type `double`)
    Double,
}
impl ImGuiDataType {
    /// All possible `ImGuiDataType` variants
    pub const VARIANTS: [ImGuiDataType; 6] = [
        ImGuiDataType::S32,
        ImGuiDataType::U32,
        ImGuiDataType::S64,
        ImGuiDataType::U64,
        ImGuiDataType::Float,
        ImGuiDataType::Double,
    ];
}

/// A cardinal direction
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiDir {
    None = -1,
    Left = 0,
    Right,
    Up,
    Down,
}
impl ImGuiDir {
    /// All possible `ImGuiDir` variants, except None
    pub const VARIANTS: [ImGuiDir; 4] = [
        // None variant intentionally skipped
        ImGuiDir::Left,
        ImGuiDir::Right,
        ImGuiDir::Up,
        ImGuiDir::Down,
    ];
}

/// A key identifier (ImGui-side enum)
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiKey {
    Tab,
    LeftArrow,
    RightArrow,
    UpArrow,
    DownArrow,
    PageUp,
    PageDown,
    Home,
    End,
    Insert,
    Delete,
    Backspace,
    Space,
    Enter,
    Escape,
    /// for text edit CTRL+A: select all
    A,
    /// for text edit CTRL+C: copy
    C,
    /// for text edit CTRL+V: paste
    V,
    /// for text edit CTRL+X: cut
    X,
    /// for text edit CTRL+Y: redo
    Y,
    /// for text edit CTRL+Z: undo
    Z,
}
impl ImGuiKey {
    /// All possible `ImGuiKey` variants
    pub const VARIANTS: [ImGuiKey; 21] = [
        ImGuiKey::Tab,
        ImGuiKey::LeftArrow,
        ImGuiKey::RightArrow,
        ImGuiKey::UpArrow,
        ImGuiKey::DownArrow,
        ImGuiKey::PageUp,
        ImGuiKey::PageDown,
        ImGuiKey::Home,
        ImGuiKey::End,
        ImGuiKey::Insert,
        ImGuiKey::Delete,
        ImGuiKey::Backspace,
        ImGuiKey::Space,
        ImGuiKey::Enter,
        ImGuiKey::Escape,
        ImGuiKey::A,
        ImGuiKey::C,
        ImGuiKey::V,
        ImGuiKey::X,
        ImGuiKey::Y,
        ImGuiKey::Z,
    ];
    pub const COUNT: usize = 21;
}

/// A mouse cursor identifier
///
/// User code may request binding to display given cursor, which is why we have some cursors that
/// are marked unused here
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiMouseCursor {
    None = -1,
    Arrow = 0,
    /// When hovering over InputText, etc.
    TextInput,
    /// (Unused by imgui functions)
    ResizeAll,
    /// When hovering over an horizontal border
    ResizeNS,
    /// When hovering over a vertical border or a column
    ResizeEW,
    /// When hovering over the bottom-left corner of a window
    ResizeNESW,
    /// When hovering over the bottom-right corner of a window
    ResizeNWSE,
    /// (Unused by imgui functions. Use for e.g. hyperlinks)
    Hand,
}
impl ImGuiMouseCursor {
    /// All possible `ImGuiMouseCursor` variants, except None
    pub const VARIANTS: [ImGuiMouseCursor; 8] = [
        // None variant intentionally skipped
        ImGuiMouseCursor::Arrow,
        ImGuiMouseCursor::TextInput,
        ImGuiMouseCursor::ResizeAll,
        ImGuiMouseCursor::ResizeNS,
        ImGuiMouseCursor::ResizeEW,
        ImGuiMouseCursor::ResizeNESW,
        ImGuiMouseCursor::ResizeNWSE,
        ImGuiMouseCursor::Hand,
    ];
}

/// An input identifier for navigation
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiNavInput {
    /// activate / open / toggle / tweak value
    ///
    /// e.g. Cross  (PS4), A (Xbox), A (Switch), Space (Keyboard)
    Activate,
    /// cancel / close / exit
    ///
    /// e.g. Circle (PS4), B (Xbox), B (Switch), Escape (Keyboard)
    Cancel,
    /// text input / on-screen keyboard
    ///
    /// e.g. Triang.(PS4), Y (Xbox), X (Switch), Return (Keyboard)
    Input,
    /// tap: toggle menu / hold: focus, move, resize
    ///
    /// e.g. Square (PS4), X (Xbox), Y (Switch), Alt (Keyboard)
    Menu,
    /// move / tweak / resize window (w/ PadMenu)
    ///
    /// e.g. D-pad Left (Gamepads), Left arrow (Keyboard)
    DpadLeft,
    /// move / tweak / resize window (w/ PadMenu)
    ///
    /// e.g. D-pad Right (Gamepads), Right arrow (Keyboard)
    DpadRight,
    /// move / tweak / resize window (w/ PadMenu)
    ///
    /// e.g. D-pad Up (Gamepads), Up arrow (Keyboard)
    DpadUp,
    /// move / tweak / resize window (w/ PadMenu)
    ///
    /// e.g. D-pad Down (Gamepads), Down arrow (Keyboard)
    DpadDown,
    /// scroll / move window (w/ PadMenu)
    ///
    /// e.g. Left Analog Stick Left
    LStickLeft,
    /// scroll / move window (w/ PadMenu)
    ///
    /// e.g. Left Analog Stick Right
    LStickRight,
    /// scroll / move window (w/ PadMenu)
    ///
    /// e.g. Left Analog Stick Up
    LStickUp,
    /// scroll / move window (w/ PadMenu)
    ///
    /// e.g. Left Analog Stick Down
    LStickDown,
    /// next window (w/ PadMenu)
    ///
    /// e.g. L1 or L2 (PS4), LB or LT (Xbox), L or ZL (Switch)
    FocusPrev,
    /// prev window (w/ PadMenu)
    ///
    /// e.g. R1 or R2 (PS4), RB or RT (Xbox), R or ZL (Switch)
    FocusNext,
    /// slower tweaks
    ///
    /// e.g. L1 or L2 (PS4), LB or LT (Xbox), L or ZL (Switch)
    TweakSlow,
    /// faster tweaks
    ///
    /// e.g. R1 or R2 (PS4), RB or RT (Xbox), R or ZL (Switch)
    TweakFast,
}
impl ImGuiNavInput {
    /// All possible `ImGuiNavInput` variants
    pub const VARIANTS: [ImGuiNavInput; 16] = [
        ImGuiNavInput::Activate,
        ImGuiNavInput::Cancel,
        ImGuiNavInput::Input,
        ImGuiNavInput::Menu,
        ImGuiNavInput::DpadLeft,
        ImGuiNavInput::DpadRight,
        ImGuiNavInput::DpadUp,
        ImGuiNavInput::DpadDown,
        ImGuiNavInput::LStickLeft,
        ImGuiNavInput::LStickRight,
        ImGuiNavInput::LStickUp,
        ImGuiNavInput::LStickDown,
        ImGuiNavInput::FocusPrev,
        ImGuiNavInput::FocusNext,
        ImGuiNavInput::TweakSlow,
        ImGuiNavInput::TweakFast,
    ];
    pub const COUNT: usize = 16;
    pub(crate) const COUNT_INTERNAL: usize = 21;
}

/// A variable identifier for styling
#[repr(C)]
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ImGuiStyleVar {
    Alpha,
    WindowPadding,
    WindowRounding,
    WindowBorderSize,
    WindowMinSize,
    WindowTitleAlign,
    ChildRounding,
    ChildBorderSize,
    PopupRounding,
    PopupBorderSize,
    FramePadding,
    FrameRounding,
    FrameBorderSize,
    ItemSpacing,
    ItemInnerSpacing,
    IndentSpacing,
    ScrollbarSize,
    ScrollbarRounding,
    GrabMinSize,
    GrabRounding,
    ButtonTextAlign,
}
impl ImGuiStyleVar {
    pub const VARIANTS: [ImGuiStyleVar; 21] = [
        ImGuiStyleVar::Alpha,
        ImGuiStyleVar::WindowPadding,
        ImGuiStyleVar::WindowRounding,
        ImGuiStyleVar::WindowBorderSize,
        ImGuiStyleVar::WindowMinSize,
        ImGuiStyleVar::WindowTitleAlign,
        ImGuiStyleVar::ChildRounding,
        ImGuiStyleVar::ChildBorderSize,
        ImGuiStyleVar::PopupRounding,
        ImGuiStyleVar::PopupBorderSize,
        ImGuiStyleVar::FramePadding,
        ImGuiStyleVar::FrameRounding,
        ImGuiStyleVar::FrameBorderSize,
        ImGuiStyleVar::ItemSpacing,
        ImGuiStyleVar::ItemInnerSpacing,
        ImGuiStyleVar::IndentSpacing,
        ImGuiStyleVar::ScrollbarSize,
        ImGuiStyleVar::ScrollbarRounding,
        ImGuiStyleVar::GrabMinSize,
        ImGuiStyleVar::GrabRounding,
        ImGuiStyleVar::ButtonTextAlign,
    ];
}