Leaked source code of windows server 2003
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//-------------------------------------------------------------------------
// NtlEng.cpp - support for Native Theme Language runtime graphics engine
//-------------------------------------------------------------------------
#include "stdafx.h"
#include "ntleng.h"
//---------------------------------------------------------------------------
#define COLORNULL 0xff000000
//---------------------------------------------------------------------------
POINT TranslateLogPoint(POINT &pt, RECT &rcLogRect, RECT &rcCaller)
{
POINT ptNew;
ptNew.x = rcCaller.left + (WIDTH(rcCaller) * (pt.x - rcLogRect.left))/WIDTH(rcLogRect);
ptNew.y = rcCaller.top + (HEIGHT(rcCaller) * (pt.y - rcLogRect.top))/HEIGHT(rcLogRect);
return ptNew;
}
//---------------------------------------------------------------------------
int TranslateLogSize(int iSize, RECT &rcLogRect, RECT &rcCaller)
{
//---- "iSize" is somewhere between width & height ----
int iWidthSize = (WIDTH(rcCaller) * iSize)/WIDTH(rcLogRect);
int iHeightSize = (HEIGHT(rcCaller) * iSize)/HEIGHT(rcLogRect);
return min(iWidthSize, iHeightSize);
}
//---------------------------------------------------------------------------
COLORREF GetParamColor(MIXEDPTRS &u)
{
COLORREF crVal = 0;
if (*u.pb == PT_COLORREF)
crVal = *u.pi++;
else if (*u.pb == PT_SYSCOLORINDEX)
crVal = GetSysColor(*u.ps++);
else if (*u.pb == PT_COLORNULL)
crVal = COLORNULL;
else
{
Log(LOG_ERROR, L"Bad color param value in NTL stream: 0x%0x", *u.pb);
}
return crVal;
}
//---------------------------------------------------------------------------
int GetParamInt(MIXEDPTRS &u)
{
int iVal;
if (*u.pb == PT_INT)
iVal = *u.pi++;
else
iVal = ClassicGetSystemMetrics(*u.ps++);
return iVal;
}
//---------------------------------------------------------------------------
POINT GetParamPoint(MIXEDPTRS &u, RECT &rcCaller, RECT &rcLogRect)
{
POINT pt = *u.ppt++;
pt = TranslateLogPoint(pt, rcCaller, rcLogRect);
return pt;
}
//---------------------------------------------------------------------------
void SetPen(HDC hdc, HPEN &hPen, COLORREF crLine, int iLineWidth)
{
DeleteObject(hPen);
if (crLine == COLORNULL)
hPen = (HPEN)GetStockObject(NULL_PEN);
else
hPen = CreatePen(PS_SOLID, iLineWidth, crLine);
SelectObject(hdc, hPen);
}
//---------------------------------------------------------------------------
HRESULT GetImageBrush(HDC hdc, int iPartId, int iStateId, int iIndex,
INtlEngCallBack *pCallBack, HBRUSH *phbr)
{
HRESULT hr;
if (! pCallBack)
{
Log(LOG_ERROR, L"No callback for NtlRun specified");
hr = MakeError32(ERROR_INTERNAL_ERROR);
}
else
hr = pCallBack->CreateImageBrush(hdc, iPartId, iStateId, iIndex, phbr);
return hr;
}
//---------------------------------------------------------------------------
HRESULT GetFillBrush(HDC hdc, MIXEDPTRS &u, int iPartId, int iStateId,
INtlEngCallBack *pCallBack, HBRUSH *phbr)
{
HBRUSH hbr = NULL;
BYTE bIndex;
HRESULT hr = S_OK;
switch (*u.pb)
{
case PT_IMAGEFILE:
bIndex = *u.pb++;
hr = GetImageBrush(hdc, iPartId, iStateId, bIndex, pCallBack, &hbr);
break;
default:
COLORREF crVal = GetParamColor(u);
if (crVal == COLORNULL)
hbr = (HBRUSH)GetStockObject(NULL_BRUSH);
else
hbr = CreateSolidBrush(crVal);
break;
}
if (SUCCEEDED(hr))
*phbr = hbr;
return hr;
}
//---------------------------------------------------------------------------
void DrawRect(HDC hdc, MIXEDPTRS &u, RECT &rcCaller)
{
int iVals[4];
COLORREF crVals[4];
//---- get int params ----
for (int i=0; i < 4; i++)
{
if ((*u.pb != PT_INT) && (*u.pb != PT_SYSMETRICINDEX))
break;
iVals[i] = GetParamInt(u);
}
int cInts = i;
//---- get color param s----
for (i=0; i < 4; i++)
{
if ((*u.pb != PT_COLORREF) && (*u.pb != PT_COLORNULL)
&& (*u.pb != PT_SYSCOLORINDEX))
break;
crVals[i] = GetParamColor(u);
}
int cColors = i;
if ((cInts == 1) && (cColors == 1)) // single size/color for all 4 sides
{
if (crVals[0] != COLORNULL)
{
HPEN hpen = CreatePen(PS_SOLID | PS_INSIDEFRAME, iVals[0], crVals[0]);
HPEN hpenOld = (HPEN)SelectObject(hdc, hpen);
HBRUSH hbrOld = (HBRUSH)SelectObject(hdc, GetStockObject(NULL_BRUSH));
Rectangle(hdc, rcCaller.left, rcCaller.top, rcCaller.right, rcCaller.bottom);
SelectObject(hdc, hpenOld);
SelectObject(hdc, hbrOld);
DeleteObject(hpen);
}
InflateRect(&rcCaller, -iVals[0], -iVals[0]);
}
else // need to draw each side one at a time
{
//---- expand int's into 4 values ----
if (cInts == 1)
{
iVals[1] = iVals[2] = iVals[3] = iVals[0];
}
else if (cInts == 2)
{
iVals[2] = iVals[0];
iVals[3] = iVals[1];
}
//---- expand colors's into 4 values ----
if (cColors == 1)
{
crVals[1] = crVals[2] = crVals[3] = crVals[0];
}
else if (cColors == 2)
{
crVals[2] = crVals[0];
crVals[3] = crVals[1];
}
HBRUSH hbrOld = (HBRUSH)SelectObject(hdc, GetStockObject(NULL_BRUSH));
HBRUSH hbr = NULL;
//---- left ----
if ((crVals[0] != COLORNULL) && (iVals[0]))
{
hbr = CreateSolidBrush(crVals[0]);
SelectObject(hdc, hbr);
PatBlt(hdc, rcCaller.left, rcCaller.top, iVals[0], HEIGHT(rcCaller), PATCOPY);
}
rcCaller.left += iVals[0];
//---- top ----
if ((crVals[1] != COLORNULL) && (iVals[1]))
{
if (crVals[1] != crVals[0]) // need new brush
{
hbr = CreateSolidBrush(crVals[1]);
SelectObject(hdc, hbr);
}
PatBlt(hdc, rcCaller.left, rcCaller.top, WIDTH(rcCaller), iVals[0], PATCOPY);
}
rcCaller.top += iVals[1];
//---- right ----
if ((crVals[2] != COLORNULL) && (iVals[2]))
{
if (crVals[2] != crVals[1]) // need new brush
{
hbr = CreateSolidBrush(crVals[2]);
SelectObject(hdc, hbr);
}
PatBlt(hdc, rcCaller.right - iVals[0], rcCaller.top, iVals[0], HEIGHT(rcCaller), PATCOPY);
}
rcCaller.right -= iVals[2];
//---- bottom ----
if ((crVals[3] != COLORNULL) && (iVals[3]))
{
if (crVals[3] != crVals[2]) // need new brush
{
hbr = CreateSolidBrush(crVals[3]);
SelectObject(hdc, hbr);
}
PatBlt(hdc, rcCaller.left, rcCaller.bottom - iVals[0], WIDTH(rcCaller), iVals[0], PATCOPY);
}
rcCaller.bottom -= iVals[3];
SelectObject(hdc, hbrOld);
DeleteObject(hbr);
}
}
//---------------------------------------------------------------------------
HRESULT RunNtl(HDC hdc, RECT &rcCaller, HBRUSH hbrBkDefault, DWORD dwOptions,
int iPartId, int iStateId, BYTE *pbCode, int iCodeLen, INtlEngCallBack *pCallBack)
{
HRESULT hr = S_OK;
MIXEDPTRS u;
u.pb = pbCode;
RECT rcLogRect = {0, 0, 1000, 1000};
RESOURCE HPEN hPen = (HPEN)GetStockObject(BLACK_PEN);
RESOURCE HBRUSH hBrush = (HBRUSH)GetStockObject(GRAY_BRUSH);
BOOL fDeleteBrush = FALSE;
if (hbrBkDefault)
hBrush = hbrBkDefault;
RESOURCE HBRUSH hbrOld = (HBRUSH)SelectObject(hdc, hBrush);
RESOURCE HPEN hpenOld = (HPEN)SelectObject(hdc, hPen);
while (*u.pb != NTL_RETURN)
{
switch (*u.pb)
{
case NTL_STATEJUMPTABLE:
{
BYTE bStateCount = *u.pb++;
if ((iStateId < 1) || (iStateId > bStateCount))
iStateId = 1;
u.pb = pbCode + u.pi[iStateId-1];
}
break;
case NTL_JMPON:
{
BYTE bBitNum = *u.pb++;
int iOffset = *u.pi++;
if (dwOptions & (1 << bBitNum))
u.pb = pbCode + iOffset;
}
break;
case NTL_JMPOFF:
{
BYTE bBitNum = *u.pb++;
int iOffset = *u.pi++;
if (! (dwOptions & (1 << bBitNum)))
u.pb = pbCode + iOffset;
}
break;
case NTL_JMP:
{
int iOffset = *u.pi++;
u.pb = pbCode + iOffset;
}
break;
case NTL_LOGRECT:
rcLogRect = *u.prc++;
break;
case NTL_LINEBRUSH:
{
COLORREF crLine = GetParamColor(u);
int iLineWidth = GetParamInt(u);
BOOL fLogWidth = *u.pb++;
if (fLogWidth)
iLineWidth = TranslateLogSize(iLineWidth, rcCaller, rcLogRect);
SetPen(hdc, hPen, crLine, iLineWidth);
}
break;
case NTL_FILLBRUSH:
{
HBRUSH hbr;
hr = GetFillBrush(hdc, u, iPartId, iStateId, pCallBack, &hbr);
if (FAILED(hr))
goto exit;
SelectObject(hdc, hbr);
if (fDeleteBrush)
DeleteObject(hBrush);
hBrush = hbr;
fDeleteBrush = TRUE;
}
break;
case NTL_MOVETO:
{
POINT pt = GetParamPoint(u, rcCaller, rcLogRect);
MoveToEx(hdc, pt.x, pt.y, NULL);
}
break;
case NTL_LINETO:
{
POINT pt = GetParamPoint(u, rcCaller, rcLogRect);
LineTo(hdc, pt.x, pt.y);
}
break;
case NTL_CURVETO:
{
POINT pts[3];
pts[0] = GetParamPoint(u, rcCaller, rcLogRect);
pts[1] = GetParamPoint(u, rcCaller, rcLogRect);
pts[2] = GetParamPoint(u, rcCaller, rcLogRect);
PolyBezierTo(hdc, pts, 3);
}
break;
case NTL_SHAPE:
{
POINT pt = GetParamPoint(u, rcCaller, rcLogRect);
BeginPath(hdc);
MoveToEx(hdc, pt.x, pt.y, NULL);
}
break;
case NTL_ENDSHAPE:
{
EndPath(hdc);
StrokeAndFillPath(hdc);
}
break;
case NTL_DRAWRECT:
{
DrawRect(hdc, u, rcCaller);
}
break;
case NTL_FILLRECT:
{
HBRUSH hbr;
hr = GetFillBrush(hdc, u, iPartId, iStateId, pCallBack, &hbr);
if (FAILED(hr))
goto exit;
FillRect(hdc, &rcCaller, hbr);
DeleteObject(hbr);
}
break;
}
}
exit:
SelectObject(hdc, hbrOld);
SelectObject(hdc, hpenOld);
DeleteObject(hPen);
if (fDeleteBrush)
DeleteObject(hBrush);
return S_OK;
}
//---------------------------------------------------------------------------