module sapp

// Shared state structs for the V sokol_app backends.
// Platform-specific state (SappState, g_sapp_state, SappWayland, SappWin32, etc.)
// lives in sapp_state_linux.v / sapp_state_windows.v respectively.

const ring_num_slots = 256
const max_title_length = 128
const mousecursor_num = 27

// Timing state for frame duration averaging
struct SappTiming {
mut:
    last        f64
    accum       f64
    avg         f64
    spike_count int
    num         int
    ring_head   int
    ring_tail   int
    ring_buf    [ring_num_slots]f64
}

// Mouse state
struct SappMouse {
mut:
    x              f32
    y              f32
    dx             f32
    dy             f32
    shown          bool
    locked         bool
    pos_valid      bool
    current_cursor MouseCursor
}

// Clipboard state
struct SappClipboard {
mut:
    enabled  bool
    buf_size int
    buffer   &char = unsafe { nil }
}

// Drag and drop state
struct SappDrop {
mut:
    enabled         bool
    max_files       int
    max_path_length int
    num_files       int
    buf_size        int
    buffer          &char = unsafe { nil }
}

// GL state
struct SappGl {
mut:
    framebuffer u32
    major       int
    minor       int
}