/**
 * Copyright (c) 2021 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#pragma once
#include "../libs.h"

/** Maximum number of breakpoints a grid can support */
#define GRID_BREAKPOINT_COUNT 4

/** Max number of children that a grid can support */
#define GRID_CHILD_COUNT 32

/** Definition of a breakpoint */
typedef struct {
  float width;
} breakpointsize_t;

/** Definition of a grid breakpoint */
typedef struct {
  uint8_t rows;
  uint8_t columns;
  float gutterX;
  float gutterY;
} gridbreakpoint_t;

/** Callback to receive when a grid child is to be resized */
typedef void gridchildresizecallback_t(
  void *user, uint8_t i,
  float screenWidth, float screenHeight,
  float x, float y,
  float width, float height
);

/** Definition of a grid child's breakpoint */
typedef struct {
  uint8_t columns;
  uint8_t rows;
  uint8_t x;
  uint8_t y;
} gridchildbreakpoint_t;

/** Definition of a grid child */
typedef struct {
  gridchildbreakpoint_t breakpoints[GRID_BREAKPOINT_COUNT];
  uint8_t breakpointCount;
} gridchild_t;

/** Definitio of a grid */
typedef struct {
  /** Breakpoints */
  gridbreakpoint_t breakpoints[GRID_BREAKPOINT_COUNT];
  breakpointsize_t breakpointSizes[GRID_BREAKPOINT_COUNT];
  uint8_t breakpointCount;
  uint8_t breakpointCurrent;

  /** Child items of the grid */
  gridchild_t children[GRID_CHILD_COUNT];
  uint8_t childCount;

  /** Internal size reference, used for caching resize events */
  float width;
  float height;

  /** Pointer to any custom user data */
  void *user;

  /** Callback to listen for when children are resized */
  gridchildresizecallback_t *onResize;
} grid_t;