#include "copyProgress.h"

#include <windows.h>
#include <commctrl.h>

#include <stdio.h>

extern HINSTANCE app_instance;
extern void gsInstall_getDesktopExt(int *x, int *y);

LRESULT CALLBACK copyProgressBar_windowProc(HWND window, UINT message,
					    WPARAM wParam, LPARAM lParam)
{	
  switch (message)
    {	
    case WM_CREATE:
      {	
	CREATESTRUCT *createStruct = (CREATESTRUCT *) lParam;
    	long *createParams;
    	copyProgressBar *progressBar;

	createParams = (long *) createStruct->lpCreateParams;
	
	SetWindowLong(window, GWL_USERDATA, createParams[0]);
	progressBar = (copyProgressBar *) GetWindowLong(window, GWL_USERDATA);
	if (progressBar == NULL)
	  { 
	    MessageBox(0, "A", "A", MB_OK);
	  }

	CreateWindowEx( 0, "STATIC", (char *) createParams[1], WS_CHILD | WS_VISIBLE,
			10, 5, 180, 20, window, (HMENU) 0,
			app_instance, NULL);
      }
      break;

    default:
      return(DefWindowProc(window, message, wParam, lParam));
    }

  return 0;
}

void copyProgressBar::registerClass()
{	static bool registered = false;

	if (registered == false)
  {	WNDCLASS classdef;

  	classdef.style 				= 0;
    classdef.lpfnWndProc	= copyProgressBar_windowProc;
    classdef.cbClsExtra		= 0;
    classdef.cbWndExtra		= sizeof(copyProgressBar *) + sizeof(long);
    classdef.hInstance		= app_instance;
    classdef.hIcon				= 0;
    classdef.hCursor			= NULL;
    classdef.hbrBackground	= (HBRUSH) (COLOR_BTNFACE + 1);
    classdef.lpszMenuName	= NULL;
    classdef.lpszClassName	= "CopyProgressBar";
    RegisterClass(&classdef);
  	registered	= true;
  }
}

copyProgressBar::copyProgressBar(unsigned long totalSize)
{	this->total		= totalSize;
	this->copied	= 0;
}

copyProgressBar::copyProgressBar()
{	this->total		= 0;
	this->copied	= 0;
}

void copyProgressBar::init(unsigned long totalSize)
{	this->total		= totalSize;
	this->copied	= 0;
}

void copyProgressBar::done(unsigned long bytesDone)
{ unsigned int percent;
  this->copied += bytesDone;

  percent =(this->copied  * 100 / this->total);

	SendMessage(this->progressBar, PBM_SETPOS, percent, 0L);
}

void copyProgressBar::show()
{ long params[2];
  int sx, sy, dx, dy;

	params[0] = (long) this;
  params[1] = (long) "Copying files....";
  this->registerClass();

  gsInstall_getDesktopExt(&sx, &sy);

  dx = (sx - 200) >> 1;
  dy = (sy - 80) >> 1;

	this->progressParent	= CreateWindowEx(	WS_EX_APPWINDOW, "CopyProgressBar",
  																				"GreenStone Installer", WS_VISIBLE,
																		 			dx, dy, 200, 80,
                                          0, (HMENU) 0,
                         		         			app_instance, (void *) params);
	this->progressBar	= CreateWindowEx(0, PROGRESS_CLASS, NULL, WS_CHILD | WS_VISIBLE,
																		 10, 30, 180, GetSystemMetrics(SM_CYVSCROLL),
                                     this->progressParent, (HMENU) 0,
                         		         app_instance, NULL);
}

void copyProgressBar::close()
{ return;
	ShowWindow(this->progressBar, SW_HIDE);
	DestroyWindow(this->progressBar);

  ShowWindow(this->progressParent, SW_HIDE);
  DestroyWindow(this->progressParent);
}