//
// Rectangle drawing routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2016 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
//     https://www.fltk.org/bugs.php
//


#include "../../config_lib.h"
#include "Fl_PicoAndroid_Graphics_Driver.h"

#include <jni.h>
#include <errno.h>

#include <EGL/egl.h>
#include <GLES/gl.h>

#include <android/log.h>
#include <android_native_app_glue.h>

#include <FL/Fl.H>

#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "native-activity", __VA_ARGS__))


/*
 By linking this module, the following static method will instantiate the
 PicoSDL Graphics driver as the main display driver.
 */
Fl_Graphics_Driver *Fl_Graphics_Driver::newMainGraphicsDriver()
{
  return new Fl_PicoAndroid_Graphics_Driver();
}


void Fl_PicoAndroid_Graphics_Driver::rectf(int x, int y, int w, int h)
{
  GLfloat q3[] = {
    x,     y,
    x,     y+h-3,
    x+w-3, y+h-3,
    x+w-3, y
  };

  uchar r, g, b;
  Fl::get_color(Fl_Graphics_Driver::color(), r, g, b);
  glColor4ub(r, g, b, 255);

  glEnableClientState(GL_VERTEX_ARRAY);
  glVertexPointer(2, GL_FLOAT, 0, q3);
  glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
  glDisableClientState(GL_VERTEX_ARRAY);
}


void Fl_PicoAndroid_Graphics_Driver::line(int x, int y, int x1, int y1)
{
  GLfloat q3[] = {
    x,   y,
    x1, y1
  };

  uchar r, g, b;
  Fl::get_color(Fl_Graphics_Driver::color(), r, g, b);
  glColor4ub(r, g, b, 255);

  glEnableClientState(GL_VERTEX_ARRAY);
  glVertexPointer(2, GL_FLOAT, 0, q3);
  glDrawArrays(GL_LINES, 0, 2);
  glDisableClientState(GL_VERTEX_ARRAY);
}


void Fl_PicoAndroid_Graphics_Driver::point(int x, int y)
{
  GLfloat q3[] = {
    x, y
  };

  uchar r, g, b;
  Fl::get_color(Fl_Graphics_Driver::color(), r, g, b);
  glColor4ub(r, g, b, 255);

  glEnableClientState(GL_VERTEX_ARRAY);
  glVertexPointer(2, GL_FLOAT, 0, q3);
  glDrawArrays(GL_POINTS, 0, 1);
  glDisableClientState(GL_VERTEX_ARRAY);
}
