ptk/include/ptk.h

#ifndef PTK_PTK_H_
#define PTK_PTK_H_

#include <ptk_color.h>
#include <ptk_list.h>
#include <ptk_vec.h>

#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>

typedef struct {
    uint32_t major;
    uint32_t minor;
    uint32_t patch;
} PtkVersion;

bool ptk_init(const size_t width, const size_t height, const char *title, const PtkVersion application_version);

typedef struct PtkComponent *PtkHandle;
#define PTK_NULL_HANDLE (void *)0

typedef enum {
    PTK_COMPONENT_TYPE_BOX = 0,
    PTK_COMPONENT_TYPE_TRIANGLE = 1,
    PTK_COMPONENT_TYPE_RECT = 2,
    PTK_COMPONENT_TYPE_ELLIPSE = 3,
    PTK_COMPONENT_TYPE_CLICKABLE = 4,
} PtkComponentType;

PTK_LIST_DEFINE(PtkHandle);

#define PTK_COMPONENT_DEFINE(name, ...) \
    typedef struct name {\
        PtkComponentType type;\
        PtkHandle parent;\
        PTK_LIST(PtkHandle) children;\
        __VA_ARGS__\
    } name

PTK_COMPONENT_DEFINE(PtkComponent, );

PTK_COMPONENT_DEFINE(PtkTriangle,
    PtkPos vertices[3];
    PtkRGB color;
);

PTK_COMPONENT_DEFINE(PtkRect,
    PtkPos top_left;
    PtkSize size;
    PtkRGB color;
);

PTK_COMPONENT_DEFINE(PtkEllipse,
    PtkPos center;
    PtkSize radii;
    PtkRGB color;
);

typedef struct PtkClickable PtkClickable;

typedef void (*MouseButtonCallback)(PtkClickable *self, const int button, const int mods);

PTK_COMPONENT_DEFINE(PtkClickable,
    MouseButtonCallback on_press;
);

PtkHandle ptk_box(const size_t child_count, PtkHandle *children);
PtkHandle ptk_triangle(const PtkPos vertices[3], const PtkRGB color);
PtkHandle ptk_rect(const PtkPos top_left, const PtkSize size, const PtkRGB color);
PtkHandle ptk_square(const PtkPos top_left, const float size, const PtkRGB color);
PtkHandle ptk_ellipse(const PtkPos center, const PtkSize radii, const PtkRGB color);
PtkHandle ptk_circle(const PtkPos center, const float radius, const PtkRGB color);
PtkHandle ptk_clickable(PtkHandle hitbox, const MouseButtonCallback on_press);

#define PTK_BOX(...) ptk_box(sizeof((PtkHandle []){ __VA_ARGS__ }) / sizeof(PtkHandle), (PtkHandle []) { __VA_ARGS__ })

int ptk_run(PtkHandle root);

#endif // PTK_PTK_H_