#ifndef KEYBOARD_H

#define KEYBOARD_H

#include "graph.h"

#include "input.h"

// key flags

enum {

  KF_DOUBLE = 1 << 0,   // show two lables, insensitive for capslock

  KF_HOLD   = 1 << 1,   // key to switch layout

  KF_SHIFT  = 1 << 2,   // key to switch layout

  KF_CAPS   = 1 << 3,   // key to switch layout

  KF_LAYOUT = 1 << 4,   // key to switch layout

  KF_MOVE   = 1 << 5,   // handle to move the window

  KF_SIZE   = 1 << 6,   // key to resize the window

  KF_CLOSE  = 1 << 7 }; // key to close the window

// special layout indices

enum {

  LI_PREV   = -1,   // switch to previous layout in the list

  LI_NEXT   = -2,   // switch to next layout in the list

  LI_REVERT = -3 }; // switch to previously used layout

struct Key;

struct Layout;

struct Keyboard;

typedef struct Key Key;

typedef struct Layout Layout;

typedef struct Keyboard Keyboard;

struct Key {

  // keep these filds at the begining for easyest static initialization

  int x, y, w, h;

  unsigned int keySym;

  unsigned int keySym2;

  const char *label;

  const char *label2;

  unsigned int flags;

  int layoutIndex;

  // these fields will be set while initialization

  Layout *l;

  TextLayout tl;

  TextLayout tl2;

  // dynamic fields

  int down;

  int downKeycode;

  int mx, my; // mouse down position, relative to key origin

  Key *nextHeld, *prevHeld;

};

struct Layout {

  // keep these filds at the begining for easyest static initialization

  Key *keys;

  int keysCount;

  int w, h;

  // these fields will be set while initialization

  Keyboard *kbd;

  // dynamic fields

  Layout *prev; // previously used layout

  Key *downKey; // key that received the last mouse down event

};

struct Keyboard {

  // keep these filds at the begining for easyest static initialization

  Layout *layouts;

  int layoutsCount;

  int w, h;

  // these fields will be set while initialization

  App *app;

  // dynamic fields

  Layout *current;

  Key *firstHeld;

  int shiftsDown;

  int capslock;

};

int keyInit(Key *k, Layout *l);

void keyDeinit(Key *k);

void keyDraw(Key *k, int cx, int cy, int cw, int ch);

void keyDown(Key *k, int x, int y);

void keyMotion(Key *k, int x, int y);

void keyUp(Key *k, int force);

int layoutInit(Layout *l, Keyboard *kbd);

void layoutDeinit(Layout *l);

void layoutDraw(Layout *l, int cx, int cy, int cw, int ch);

void layoutMouseDown(Layout *l, int x, int y);

void layoutMouseMotion(Layout *l, int x, int y);

void layoutMouseUp(Layout *l);

int keyboardInit(Keyboard *kbd, App *app);

void keyboardDeinit(Keyboard *kbd);

void keyboardResize(Keyboard *kbd);

void keyboardDraw(Keyboard *kbd, int cx, int cy, int cw, int ch);

void keyboardMouseDown(Keyboard *kbd, int x, int y);

void keyboardMouseMotion(Keyboard *kbd, int x, int y);

void keyboardMouseUp(Keyboard *kbd);

void keyboardSwitchLayout(Keyboard *kbd, int index);

void keyboardRelaseHeld(Keyboard *kbd);

#endif