Work/wave/MAINWND.CPP

#include <wave/mainwnd.hpp>
#include <wave/wave.hpp>
#include <common/opendlg.hpp>
#include <common/pen.hpp>
#include <common/purehdc.hpp>

#include <sample/puresmpl.hpp>
#include <sample/wave.hpp>               
#include <sample/purewave.hpp>

char MainWindow::szClassName[]="WaveUtil";
char MainWindow::szMenuName[]="WaveMenu";

MainWindow::MainWindow(HINSTANCE hInstance)
: mPaintHandler(this,&MainWindow::paintHandler),
	mDestroyHandler(this,&MainWindow::destroyHandler),
	mCommandHandler(this,&MainWindow::commandHandler),
	mKeyDownHandler(this,&MainWindow::keyDownHandler),
	mSizeHandler(this,&MainWindow::sizeHandler),
	mCreateHandler(this,&MainWindow::createHandler),
	mTimerHandler(this,&MainWindow::timerHandler),
  mDrawItemHandler(this,&MainWindow::drawItemHandler),	
	mNotifyHandler(this,&MainWindow::notifyHandler),
	mhInstance(hInstance), mOwnerDraw(OwnerDraw::UseInstance)
{
	insertHandlers();
	registerClass();
	createWindow(WS_EX_ACCEPTFILES|WS_EX_WINDOWEDGE|WS_EX_LEFT|WS_EX_LTRREADING|WS_EX_RIGHTSCROLLBAR,szClassName,szClassName,
	  WS_VISIBLE|WS_CLIPSIBLINGS|WS_BORDER|WS_CLIPCHILDREN|WS_BORDER|WS_DLGFRAME|WS_SYSMENU|WS_THICKFRAME|WS_GROUP,
		Rect(CW_USEDEFAULT,CW_USEDEFAULT,InitialWidth,InitialHeight),
		NULL,NULL,mhInstance,(LPSTR)this);
	show(SW_SHOW);
	update();
  if(!mTrackBar.createTrackBar(*this,Rect(10,12,348,30),TrackBarID,TRUE))::MessageBeep(0);
	mTrackBar.setRange(1,100);
	mTrackBar.setPos(1);
	mTrackBar.insertHandler(TrackBar::NotifyEndTrack,&mNotifyHandler);
	mControl.createControl("BUTTON","",WS_VISIBLE|WS_DISABLED|BS_OWNERDRAW,Rect(10,42,16,16),*this,PlayID);
}

MainWindow::~MainWindow()
{
	destroy();
}

void MainWindow::insertHandlers(void)
{
	insertHandler(VectorHandler::DestroyHandler,&mDestroyHandler);
	insertHandler(VectorHandler::PaintHandler,&mPaintHandler);
	insertHandler(VectorHandler::CommandHandler,&mCommandHandler);
	insertHandler(VectorHandler::SizeHandler,&mSizeHandler);
	insertHandler(VectorHandler::KeyDownHandler,&mKeyDownHandler);
	insertHandler(VectorHandler::CreateHandler,&mCreateHandler);
	insertHandler(VectorHandler::TimerHandler,&mTimerHandler);
	insertHandler(VectorHandler::DrawItemHandler,&mDrawItemHandler);
}

void MainWindow::removeHandlers(void)
{
	removeHandler(VectorHandler::DestroyHandler,&mDestroyHandler);
	removeHandler(VectorHandler::PaintHandler,&mPaintHandler);
	removeHandler(VectorHandler::CommandHandler,&mCommandHandler);
	removeHandler(VectorHandler::SizeHandler,&mSizeHandler);
	removeHandler(VectorHandler::KeyDownHandler,&mKeyDownHandler);
	removeHandler(VectorHandler::CreateHandler,&mCreateHandler);
	removeHandler(VectorHandler::TimerHandler,&mTimerHandler);
	removeHandler(VectorHandler::DrawItemHandler,&mDrawItemHandler);
}

void MainWindow::registerClass(void)const
{
	WNDCLASS wndClass;

	if(::GetClassInfo(mhInstance,className(),(WNDCLASS FAR*)&wndClass))return;
	wndClass.style         =CS_VREDRAW|CS_HREDRAW||CS_DBLCLKS;
	wndClass.lpfnWndProc   =(WNDPROC)Window::WindowWndProc;
	wndClass.cbClsExtra    =0;
	wndClass.cbWndExtra    =sizeof(MainWindow*);
	wndClass.hInstance     =mhInstance;
	wndClass.hIcon         =::LoadIcon(NULL,IDI_APPLICATION);
	wndClass.hCursor       =::LoadCursor(NULL,IDC_ARROW);
	wndClass.hbrBackground =(HBRUSH)::GetStockObject(LTGRAY_BRUSH);
	wndClass.lpszMenuName  =szMenuName;
	wndClass.lpszClassName =szClassName;
	::RegisterClass(&wndClass);
	assert(0!=::GetClassInfo(mhInstance,className(),(WNDCLASS FAR*)&wndClass));
}

CallbackData::ReturnType MainWindow::destroyHandler(CallbackData &/*someCallbackData*/)
{
	removeHandlers();
	::PostQuitMessage(0);
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::sizeHandler(CallbackData &/*someCallbackData*/)
{
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::keyDownHandler(CallbackData &/*someCallbackData*/)
{
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::paintHandler(CallbackData &someCallbackData)
{
	Rect winRect;
  Pen whitePen(RGBColor(255,255,255));
  PaintInformation &paintInformation=(*((PaintInformation*)someCallbackData.lParam()));
	windowRect(winRect);
  ((PureDevice&)paintInformation).line(Point(1,5),Point(winRect.right(),5),whitePen);
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::timerHandler(CallbackData &/*someCallbackData*/)
{
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::drawItemHandler(CallbackData &someCallbackData)
{
	if(PlayID==((LPDRAWITEMSTRUCT)someCallbackData.lParam())->CtlID)
		mOwnerDraw.handleOwnerButton(PlayID,someCallbackData.lParam());
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::createHandler(CallbackData &/*someCallbackData*/)
{
	mOwnerDraw.associate(PlayID,String("PLAY"),String("PLAY"),String("PLAYDN"),String("PLAYDA"),OwnerDraw::NOFOCUS);
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::notifyHandler(CallbackData &someCallbackData)
{
  int sliderPos(mTrackBar.getPos());
	if(!sliderPos)return (CallbackData::ReturnType)sliderPos;
	return (CallbackData::ReturnType)FALSE;
}

CallbackData::ReturnType MainWindow::commandHandler(CallbackData &someCallbackData)
{
  switch(someCallbackData.wmCommandID())
	{
	  case WAVEMENU_OPEN :
		  handleFileOpenEvent();
		  break;
		case WAVEMENU_EXIT :
		  postMessage(*this,WM_CLOSE,0,0L);
		  break;
	  case PlayID :
		 handlePlay();
			break;
	}
	return (CallbackData::ReturnType)FALSE;
}

void MainWindow::handleFileOpenEvent(void)
{
	String fileHeading("FILES");
	String exeSection("WAV");
	OpenDialog openFileName;

	openFileName.owner(0);
	openFileName.instance(processInstance());
	openFileName.filter("Wav");
	openFileName.filterPattern("*.wav");
	openFileName.fileName("*.WAV");
	openFileName.fileTitle("FOO");
	openFileName.initialDirectory(".");
	openFileName.title("Open File");
	openFileName.creationFlags(OpenDialog::EXPLORER);
	if(!openFileName.getOpenFileName())return;
	PureWave pureWave(processInstance());
	WaveForm waveForm(openFileName.fileName());
  if(!waveForm.isOkay())
	{
	  ::MessageBox(*this,openFileName.fileName(),(LPSTR)"Unknown format",MB_OK);
		return;
	}
	mPathFileName=openFileName.fileName();
	::EnableWindow(mControl,TRUE);
}

void MainWindow::handlePlay(void)
{
  if(mPathFileName.isNull())return;
	PureWave pureWave(processInstance());
	WaveForm waveForm(mPathFileName);
	if(!waveForm.isOkay())return;
	((FormatChunk&)waveForm).samplesPerSecond(((FormatChunk&)waveForm).samplesPerSecond()/2);
  ((FormatChunk&)waveForm).averageBytesPerSecond(((FormatChunk&)waveForm).averageBytesPerSecond()/2);
	pureWave.play(waveForm,DeviceHandler::Wait);
}