Microsoft-3D-Movie-Maker/kauai/SRC/DLG.CPP

/* Copyright (c) Microsoft Corporation.
   Licensed under the MIT License. */

/***************************************************************************
	Author: ShonK
	Project: Kauai
	Reviewed:
	Copyright (c) Microsoft Corporation

	Standard dialogs.

***************************************************************************/
#include "frame.h"
ASSERTNAME


RTCLASS(DLG)

/***************************************************************************
	Constructor for a dialog object.
***************************************************************************/
DLG::DLG(long rid) : GG(size(DIT))
{
	_rid = rid;
}


/***************************************************************************
	Static method to create a new DLG.  Does NewObj then calls _FInit.
***************************************************************************/
PDLG DLG::PdlgNew(long rid, PFNDLG pfn, void *pv)
{
	PDLG pdlg;

	if ((pdlg = NewObj DLG(rid)) == pvNil)
		return pvNil;

	pdlg->_pfn = pfn;
	pdlg->_pv = pv;

	if (!pdlg->_FInit())
		ReleasePpo(&pdlg);

	return pdlg;
}


/***************************************************************************
	Get the values for [iditMin, iditLim) from the actual dialog and put
	them in the GGDIT.
***************************************************************************/
bool DLG::FGetValues(long iditMin, long iditLim)
{
	AssertThis(0);
	long idit;
	DIT dit;
	long lw;
	STN stn;

	AssertIn(iditMin, 0, iditLim);
	if (_pgob == pvNil)
		{
		Bug("why are you calling this when the dialog doesn't exist?");
		return fFalse;
		}

	iditLim = LwMin(iditLim, IvMac());
	for (idit = iditMin; idit < iditLim; idit++)
		{
		GetDit(idit, &dit);
		switch (dit.ditk)
			{
		case ditkCheckBox:
			lw = _FGetCheckBox(idit);
			goto LPutLw;

		case ditkRadioGroup:
			lw = _LwGetRadioGroup(idit);
LPutLw:
			PutRgb(idit, 0, size(lw), &lw);
			break;

		case ditkEditText:
		case ditkCombo:
			_GetEditText(idit, &stn);
			if (!FPutStn(idit, &stn))
				return fFalse;
			break;
			}
		}

	return fTrue;
}


/***************************************************************************
	Set the values for [iditMin, iditLim) from the GGDIT into the actual
	dialog.
***************************************************************************/
void DLG::SetValues(long iditMin, long iditLim)
{
	AssertThis(0);
	long idit;
	DIT dit;
	STN stn;
	long lw;
	long cb, cbT, ib;
	byte *prgb;

	if (_pgob == pvNil)
		{
		Bug("why are you calling this when the dialog doesn't exist?");
		return;
		}

	iditLim = LwMin(iditLim, IvMac());
	for (idit = iditMin; idit < iditLim; idit++)
		{
		GetDit(idit, &dit);
		switch (dit.ditk)
			{
		case ditkCheckBox:
			GetRgb(idit, 0, size(lw), &lw);
			_SetCheckBox(idit, lw);
			break;

		case ditkRadioGroup:
			GetRgb(idit, 0, size(lw), &lw);
			_SetRadioGroup(idit, lw);
			break;

		case ditkEditText:
			GetStn(idit, &stn);
			_SetEditText(idit, &stn);
			break;

		case ditkCombo:
			_ClearList(idit);
			cb = Cb(idit);
			if (cb <= 0)
				{
				stn.SetNil();
				_SetEditText(idit, &stn);
				break;
				}
			prgb = (byte *)PvLock(idit);
			if (!stn.FSetData(prgb, cb, &cbT))
				{
				Bug("bad combo item");
				cbT = cb;
				}
			_SetEditText(idit, &stn);
			for (ib = cbT; ib < cb; )
				{
				if (!stn.FSetData(prgb + ib, cb - ib, &cbT))
					{
					BugVar("bad combo item", &ib);
					break;
					}
				ib += cbT;
				_FAddToList(idit, &stn);
				}
			Unlock();
			break;
			}
		}
}


/***************************************************************************
	Get the item number from a system item number.
***************************************************************************/
long DLG::IditFromSit(long sit)
{
	long idit;
	DIT dit;

	for (idit = IvMac(); idit-- != 0; )
		{
		GetDit(idit, &dit);
		if (sit >= dit.sitMin && sit < dit.sitLim)
			return idit;
		}
	return ivNil;
}


/***************************************************************************
	Calls the PFNDLG (if not nil) to notify of a change.  PFNDLG should
	return true if the dialog should be dismissed.  The PFNDLG is free
	to change *pidit.  If a nil PFNDLG was specified (in PdlgNew),
	this returns true (dismisses the dialog) on any button hit.
***************************************************************************/
bool DLG::_FDitChange(long *pidit)
{
	if (pvNil == _pfn)
		{
		DIT dit;

		if (ivNil == *pidit)
			return fFalse;

		GetDit(*pidit, &dit);
		return dit.ditk == ditkButton;
		}

	return (*_pfn)(this, pidit, _pv);
}


/***************************************************************************
	Get the stn (for an edit item).
***************************************************************************/
void DLG::GetStn(long idit, PSTN pstn)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());
	AssertPo(pstn, 0);
	long cb;

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkEditText == dit.ditk || dit.ditk == ditkCombo,
		"not a text item or combo");
#endif //DEBUG

	cb = Cb(idit);
	if (cb <= 0)
		pstn->SetNil();
	else
		{
		AssertDo(pstn->FSetData(PvLock(idit), cb, &cb), 0);
		Unlock();
		}
}


/***************************************************************************
	Put the stn into the DLG.
***************************************************************************/
bool DLG::FPutStn(long idit, PSTN pstn)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());
	AssertPo(pstn, 0);
	DIT dit;
	long cbOld, cbNew;

	GetDit(idit, &dit);
	cbOld = Cb(idit);
	cbNew = pstn->CbData();
	switch (dit.ditk)
		{
	default:
		Bug("not a text item or combo");
		return fFalse;

	case ditkEditText:
		if (cbOld != cbNew && !FPut(idit, cbNew, pvNil))
			return fFalse;
		break;

	case ditkCombo:
		if (cbOld > 0)
			{
			STN stn;

			if (!stn.FSetData(PvLock(idit), cbOld, &cbOld))
				{
				Bug("why did setting the data fail?");
				cbOld = Cb(idit);
				}
			Unlock();
			}
		if (cbOld > cbNew)
			DeleteRgb(idit, 0, cbOld - cbNew);
		else if (cbOld < cbNew && !FInsertRgb(idit, 0, cbNew - cbOld, pvNil))
			return fFalse;
		break;
		}

	pstn->GetData(PvLock(idit));
	Unlock();
	return fTrue;
}


/***************************************************************************
	Get the value of a radio group.
***************************************************************************/
long DLG::LwGetRadio(long idit)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());
	long lw;

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkRadioGroup == dit.ditk, "not a radio group");
#endif //DEBUG

	GetRgb(idit, 0, size(long), &lw);
	return lw;
}


/***************************************************************************
	Set the value of the radio group.
***************************************************************************/
void DLG::PutRadio(long idit, long lw)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkRadioGroup == dit.ditk, "not a radio group");
	AssertIn(lw, 0, dit.sitLim - dit.sitMin);
#endif //DEBUG

	PutRgb(idit, 0, size(long), &lw);
}


/***************************************************************************
	Get the value of a check box.
***************************************************************************/
bool DLG::FGetCheck(long idit)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());
	long lw;

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkCheckBox == dit.ditk, "not a check box");
#endif //DEBUG

	GetRgb(idit, 0, size(long), &lw);
	return lw;
}


/***************************************************************************
	Set the value of a check box item.
***************************************************************************/
void DLG::PutCheck(long idit, bool fOn)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());
	long lw;

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkCheckBox == dit.ditk, "not a check box");
#endif //DEBUG

	lw = FPure(fOn);
	PutRgb(idit, 0, size(long), &lw);
}


/***************************************************************************
	Get the indicated edit item from the dialog and convert it to a long.
	If the string is empty, sets *plw to zero and sets *pfEmpty (if pfEmpty
	is not nil) and returns false.  If the string doesn't parse as a number,
	returns false.
***************************************************************************/
bool DLG::FGetLwFromEdit(long idit, long *plw, bool *pfEmpty)
{
	AssertThis(0);
	AssertVarMem(plw);
	AssertNilOrVarMem(pfEmpty);
	STN stn;

	GetStn(idit, &stn);
	if (0 == stn.Cch())
		{
		if (pvNil != pfEmpty)
			*pfEmpty = fTrue;
		*plw = 0;
		return fFalse;
		}
	if (pvNil != pfEmpty)
		*pfEmpty = fFalse;
	if (!stn.FGetLw(plw, 0))
		{
		TrashVar(plw);
		return fFalse;
		}
	return fTrue;
}


/***************************************************************************
	Put the long into the indicated edit item (in decimal).
***************************************************************************/
bool DLG::FPutLwInEdit(long idit, long lw)
{
	AssertThis(0);
	STN stn;

	stn.FFormatSz(PszLit("%d"), lw);
	return FPutStn(idit, &stn);
}


/***************************************************************************
	Add the string to the given list item.
***************************************************************************/
bool DLG::FAddToList(long idit, PSTN pstn)
{
	AssertThis(0);
	long cb, cbTot;

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkCombo == dit.ditk, "not a combo");
#endif //DEBUG

	cbTot = Cb(idit);
	if (cbTot == 0)
		{
		STN stn;

		stn.SetNil();
		if (!FPut(idit, cbTot = stn.CbData(), pvNil))
			return fFalse;
		stn.GetData(PvLock(idit));
		Unlock();
		}
	cb = pstn->CbData();
	if (!FInsertRgb(idit, cbTot, cb, pvNil))
		return fFalse;

	pstn->GetData(PvAddBv(PvLock(idit), cbTot));
	Unlock();
	return fTrue;
}


/***************************************************************************
	Empty the list of options for the list item.
***************************************************************************/
void DLG::ClearList(long idit)
{
	AssertThis(0);
	AssertIn(idit, 0, IvMac());
	long cbOld, cbNew;
	STN stn;

#ifdef DEBUG
	DIT dit;
	GetDit(idit, &dit);
	Assert(ditkCombo == dit.ditk, "not a combo");
#endif //DEBUG

	cbOld = Cb(idit);
	if (cbOld <= 0)
		return;

	if (!stn.FSetData(PvLock(idit), cbOld, &cbNew))
		{
		Bug("why did setting the data fail?");
		cbNew = 0;
		}
	Unlock();
	if (cbOld > cbNew)
		DeleteRgb(idit, cbNew, cbOld - cbNew);
}