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windows-nt/Source/XPSP1/NT/admin/controls/smonctrl/legend.cpp

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/*++
Copyright (C) 1992-1999 Microsoft Corporation
Module Name:
legend.cpp
Abstract:
This file contains code creating the legend window, which is
a child of the graph windows. The legend window displays a
legend line for each line in the associated graph. It also
includes an area called the label, which are headers for those
lines.
--*/
//==========================================================================//
// Includes //
//==========================================================================//
#include "polyline.h"
#include "utils.h"
#include <stdio.h> // for sprintf
#include <uxtheme.h>
#include "winhelpr.h"
#include "owndraw.h"
#include "unihelpr.h"
#define eScaleValueSpace TEXT(">9999999999.0")
#define szGraphLegendClass TEXT("PerfLegend")
#define szGraphLegendClassA "PerfLegend"
#define MAX_COL_CHARS (64)
LRESULT APIENTRY HdrWndProc (HWND, UINT, WPARAM, LPARAM);
//==========================================================================//
// Constants //
//==========================================================================//
enum Orientation
{
LEFTORIENTATION = TA_LEFT,
CENTERORIENTATION = TA_CENTER,
RIGHTORIENTATION = TA_RIGHT
};
enum ColumnType
{
eLegendColorCol = 0,
eLegendScaleCol = 1,
eLegendCounterCol = 2,
eLegendInstanceCol = 3,
eLegendParentCol = 4,
eLegendObjectCol = 5,
eLegendSystemCol = 6,
eLegendExtraCol = 7 // If control wider than combined columns
};
enum SortType
{
NO_SORT,
INCREASING_SORT,
DECREASING_SORT
};
enum WindowType
{
LIST_WND = 1000,
HDR_WND
};
#define NULL_WIDTH -1
#define dwGraphLegendClassStyle (CS_HREDRAW | CS_VREDRAW)
#define iGraphLegendClassExtra (0)
#define iGraphLegendWindowExtra (sizeof (PLEGEND))
#define dwGraphLegendWindowStyle (WS_CHILD | WS_VISIBLE)
#define ThreeDPad 2
#define iMaxVisibleItems 8
#define dwGraphLegendItemsWindowClass TEXT("ListBox")
#define dwGraphLegendItemsWindowStyle \
(LBS_NOTIFY | LBS_NOINTEGRALHEIGHT | LBS_OWNERDRAWFIXED | \
WS_VISIBLE | WS_CHILD | WS_VSCROLL)
#define WM_DELAYED_SELECT WM_USER + 100
#define LegendBottomMargin() (ThreeDPad)
#define LegendLeftMargin() (ThreeDPad)
#define LegendHorzMargin() (10)
typedef struct {
PCGraphItem pGItem;
LPCTSTR pszKey;
} SORT_ITEM, *PSORT_ITEM;
//==========================================================================//
// Local Variables //
//==========================================================================//
static INT xBorderWidth = GetSystemMetrics(SM_CXBORDER);
static INT yBorderHeight = GetSystemMetrics(SM_CYBORDER);
#define MAX_COL_HEADER_LEN 32
static TCHAR aszColHeader[iLegendNumCols][MAX_COL_HEADER_LEN];
//
// Sorting function
//
INT __cdecl
LegendSortFunc(
const void *elem1,
const void *elem2
)
{
return lstrcmp(((PSORT_ITEM)elem1)->pszKey, ((PSORT_ITEM)elem2)->pszKey);
}
//
// Constructor
//
CLegend::CLegend ( void )
: m_pCtrl ( NULL ),
m_hWnd ( NULL ),
m_hWndHeader ( NULL ),
m_DefaultWndProc ( NULL ),
m_hWndItems ( NULL ),
m_hFontItems ( NULL ),
m_hFontLabels ( NULL ),
m_iNumItemsVisible ( 0 ),
m_pCurrentItem ( NULL ),
m_iSortDir ( NO_SORT ),
m_parrColWidthFraction( NULL )
{
m_fMetafile = FALSE;
m_aCols[0].xWidth = -1;
}
//
// Destructor
//
CLegend::~CLegend (void )
{
// Restore default window proc
// so we don't get called post-mortum
if (m_hWndHeader != NULL) {
SetWindowLongPtr(m_hWndHeader, GWLP_WNDPROC, (INT_PTR)m_DefaultWndProc);
}
if (m_hWnd != NULL) {
DestroyWindow(m_hWnd);
}
if ( NULL != m_parrColWidthFraction ) {
delete m_parrColWidthFraction;
}
}
//
// Initialization
//
BOOL CLegend::Init ( PSYSMONCTRL pCtrl, HWND hWndParent )
{
INT iCol ;
HD_ITEM hdi;
HDC hDC;
BOOL fComputeWidths;
WNDCLASS wc ;
LONG lExStyles;
// Save pointer to parent control
m_pCtrl = pCtrl;
BEGIN_CRITICAL_SECTION
// Register window class once
if (pstrRegisteredClasses[LEGEND_WNDCLASS] == NULL) {
wc.style = dwGraphLegendClassStyle ;
wc.lpfnWndProc = (WNDPROC) GraphLegendWndProc ;
wc.hInstance = g_hInstance ;
wc.cbClsExtra = iGraphLegendClassExtra ;
wc.cbWndExtra = iGraphLegendWindowExtra ;
wc.hIcon = NULL ;
wc.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wc.hbrBackground = NULL ;
wc.lpszMenuName = NULL ;
wc.lpszClassName = szGraphLegendClass ;
if (RegisterClass (&wc)) {
pstrRegisteredClasses[LEGEND_WNDCLASS] = szGraphLegendClass;
}
// Ensure controls are initialized
InitCommonControls();
// Load the column header strings just once also
for (iCol=0; iCol<iLegendNumCols; iCol++) {
LoadString(g_hInstance, (IDS_LEGEND_BASE + iCol), aszColHeader[iCol], MAX_COL_HEADER_LEN);
}
}
END_CRITICAL_SECTION
if (pstrRegisteredClasses[LEGEND_WNDCLASS] == NULL)
return FALSE;
// Create our window
m_hWnd = CreateWindow (szGraphLegendClass, // class
NULL, // caption
dwGraphLegendWindowStyle, // window style
0, 0, // position
0, 0, // size
hWndParent, // parent window
NULL, // menu
g_hInstance, // program instance
(LPVOID) this ); // user-supplied data
if (m_hWnd == NULL)
return FALSE;
// Turn off layout mirroring if it is enabled
lExStyles = GetWindowLong(m_hWnd, GWL_EXSTYLE);
if ( 0 != ( lExStyles & WS_EX_LAYOUTRTL ) ) {
lExStyles &= ~WS_EX_LAYOUTRTL;
SetWindowLong(m_hWnd, GWL_EXSTYLE, lExStyles);
}
// Turn off XP window theme for the owner drawn list header and cells.
SetWindowTheme (m_hWnd, TEXT (" "), TEXT (" "));
m_hWndHeader = CreateWindow(WC_HEADER,
NULL,
WS_CHILD | WS_BORDER | HDS_BUTTONS | HDS_HORZ,
0, 0, 0, 0,
m_hWnd,
(HMENU)HDR_WND,
g_hInstance,
(LPVOID) NULL);
if (m_hWndHeader == NULL)
return FALSE;
// Turn off XP window theme for the owner drawn list header and cells.
SetWindowTheme (m_hWndHeader, TEXT (" "), TEXT (" "));
// Insert our own window procedure for special processing
m_DefaultWndProc = (WNDPROC)SetWindowLongPtr(m_hWndHeader, GWLP_WNDPROC, (INT_PTR)HdrWndProc);
// Create Legend Items Listbox
m_hWndItems = CreateWindow (TEXT("ListBox"), // window class
NULL, // window caption
dwGraphLegendItemsWindowStyle, // window style
0, 0, 0, 0, // window size and pos
m_hWnd, // parent window
(HMENU)LIST_WND, // child ID
g_hInstance, // program instance
(LPVOID) TRUE) ; // user-supplied data
if (m_hWndItems == NULL)
return FALSE;
// Turn off XP window theme for the owner drawn list header and cells.
SetWindowTheme (m_hWndItems, TEXT (" "), TEXT (" "));
// Set up DC for text measurements
hDC = GetDC (m_hWndHeader);
if ( NULL != hDC ) {
// Compute initial sizes based on font
ChangeFont(hDC);
}
// Set column widths and header labels
m_aCols[0].xPos = 0;
fComputeWidths = (m_aCols[0].xWidth == -1);
for (iCol = 0; iCol < iLegendNumCols; iCol++)
{
// If width not loaded, calculate one based on label
if ( fComputeWidths && NULL != hDC ) {
m_aCols[iCol].xWidth = TextWidth (hDC, aszColHeader[iCol]) + 2 * LegendHorzMargin () ;
}
m_aCols[iCol].iOrientation = LEFTORIENTATION;
if (iCol > 0) {
m_aCols[iCol].xPos = m_aCols[iCol-1].xPos + m_aCols[iCol-1].xWidth;
}
hdi.mask = HDI_FORMAT | HDI_WIDTH;
hdi.pszText = NULL;
hdi.cxy = m_aCols[iCol].xWidth;
hdi.fmt = HDF_OWNERDRAW | HDF_LEFT;
Header_InsertItem(m_hWndHeader, iCol, &hdi);
}
if ( NULL != hDC ) {
ReleaseDC ( m_hWndHeader, hDC );
}
return TRUE;
}
HRESULT CLegend::LoadFromStream(LPSTREAM pIStream)
{
HRESULT hr;
ULONG bc;
INT iCol;
LEGEND_DATA LegendData;
HD_ITEM hdi;
hr = pIStream->Read(&LegendData, sizeof(LegendData), &bc);
if (FAILED(hr))
return hr;
if (bc != sizeof(LegendData))
return E_FAIL;
hdi.mask = HDI_WIDTH;
for (iCol=0; iCol<iLegendNumCols; iCol++) {
m_aCols[iCol].xWidth = LegendData.xColWidth[iCol];
if (iCol > 0) {
m_aCols[iCol].xPos = m_aCols[iCol-1].xPos + m_aCols[iCol-1].xWidth;
}
hdi.cxy = m_aCols[iCol].xWidth;
Header_SetItem(m_hWndHeader, iCol, &hdi);
}
m_iSortCol = LegendData.iSortCol;
m_iSortDir = LegendData.iSortDir;
return NOERROR;
}
HRESULT
CLegend::SaveToStream(LPSTREAM pIStream)
{
HRESULT hr;
INT iCol;
LEGEND_DATA LegendData;
for (iCol=0; iCol<iLegendNumCols; iCol++) {
LegendData.xColWidth[iCol] = m_aCols[iCol].xWidth;
}
LegendData.iSortCol = m_iSortCol;
LegendData.iSortDir = m_iSortDir;
hr = pIStream->Write(&LegendData, sizeof(LegendData), NULL);
if (FAILED(hr))
return hr;
return NOERROR;
}
HRESULT
CLegend::LoadFromPropertyBag (
IPropertyBag* pIPropBag,
IErrorLog* pIErrorLog )
{
HRESULT hr = S_OK;
LPTSTR pszData = NULL;
int iBufSizeCurrent = 0;
int iBufSize;
hr = IntegerFromPropertyBag ( pIPropBag, pIErrorLog, L"LegendSortDirection", m_iSortDir );
hr = IntegerFromPropertyBag ( pIPropBag, pIErrorLog, L"LegendSortColumn", m_iSortCol );
iBufSize = iBufSizeCurrent;
hr = StringFromPropertyBag (
pIPropBag,
pIErrorLog,
L"LegendColumnWidths",
pszData,
iBufSize );
if ( SUCCEEDED(hr) &&
iBufSize > iBufSizeCurrent ) {
// Width data exists.
if ( NULL != pszData ) {
delete pszData;
pszData = NULL;
}
pszData = new TCHAR[ iBufSize ];
if ( NULL == pszData ) {
hr = E_OUTOFMEMORY;
} else {
lstrcpy ( pszData, _T("") );
iBufSizeCurrent = iBufSize;
hr = StringFromPropertyBag (
pIPropBag,
pIErrorLog,
L"LegendColumnWidths",
pszData,
iBufSize );
}
if ( SUCCEEDED(hr) ) {
m_parrColWidthFraction = new DOUBLE[iLegendNumCols];
if ( NULL == m_parrColWidthFraction )
hr = E_OUTOFMEMORY;
}
if ( SUCCEEDED(hr) ) {
INT iDataIndex;
DOUBLE dValue = 0;
TCHAR* pNextData;
TCHAR* pDataEnd;
pNextData = pszData;
pDataEnd = pszData + lstrlen(pszData);
for ( iDataIndex = 0; SUCCEEDED(hr) && iDataIndex < iLegendNumCols; iDataIndex++ ) {
if ( pNextData < pDataEnd ) {
hr = GetNextValue ( pNextData, dValue );
if ( SUCCEEDED(hr) ) {
m_parrColWidthFraction[iDataIndex] = dValue;
} else {
hr = S_OK;
}
} else {
hr = E_FAIL;
}
}
}
}
if (pszData != NULL) {
delete pszData;
}
return NOERROR;
}
HRESULT
CLegend::SaveToPropertyBag (
IPropertyBag* pIPropBag,
BOOL /* fClearDirty */,
BOOL /* fSaveAllProps */ )
{
HRESULT hr = NOERROR;
TCHAR szData[MAX_COL_CHARS*iLegendNumCols + 1];
TCHAR* pszTemp;
INT iIndex;
VARIANT vValue;
INT xWidth;
xWidth = m_Rect.right - m_Rect.left - 2 * LegendLeftMargin();
// Continue even if error, using defaults in those cases.
lstrcpy ( szData,L"" );
for ( iIndex = 0; SUCCEEDED(hr) && iIndex < iLegendNumCols; iIndex++ ) {
DOUBLE dFractionWidth;
dFractionWidth = ( (DOUBLE)m_aCols[iIndex].xWidth ) / xWidth;
if ( iIndex > 0 ) {
lstrcat ( szData, L"\t" );
}
VariantInit( &vValue );
vValue.vt = VT_R8;
vValue.dblVal = dFractionWidth;
hr = VariantChangeTypeEx( &vValue, &vValue, LCID_SCRIPT, VARIANT_NOUSEROVERRIDE, VT_BSTR );
pszTemp = W2T( vValue.bstrVal);
lstrcat ( szData, pszTemp );
VariantClear( &vValue );
}
if ( SUCCEEDED( hr ) ){
hr = StringToPropertyBag ( pIPropBag, L"LegendColumnWidths", szData );
}
hr = IntegerToPropertyBag ( pIPropBag, L"LegendSortDirection", m_iSortCol );
hr = IntegerToPropertyBag ( pIPropBag, L"LegendSortColumn", m_iSortDir );
return NOERROR;
}
//
// Get list index of item
//
INT CLegend::GetItemIndex(PCGraphItem pGItem)
{
INT nItems;
INT i;
nItems = LBNumItems(m_hWndItems);
for (i=0; i<nItems; i++)
{
if (pGItem == (PCGraphItem)LBData(m_hWndItems, i))
return i;
}
return LB_ERR;
}
//
// Select list item
//
BOOL CLegend::SelectItem(PCGraphItem pGItem)
{
INT iIndex;
// Don't reselect the current selection
// This is our parent echoing the change
if (pGItem == m_pCurrentItem)
return TRUE;
iIndex = GetItemIndex(pGItem);
if (iIndex == LB_ERR)
return FALSE;
LBSetSelection (m_hWndItems, iIndex) ;
m_pCurrentItem = pGItem;
return TRUE;
}
//
// Add new item to legend
//
BOOL CLegend::AddItem (PCGraphItem pItem)
{
INT iHigh,iLow,iMid;
INT iComp;
LPCTSTR pszItemKey;
LPCTSTR pszItemKey2;
PCGraphItem pListItem;
BOOL bSorted = TRUE;
if (m_iSortDir == NO_SORT) {
bSorted = FALSE;
}
else {
//
// If we need to sort, we must sort based upon a sortable
// column. So check to make sure we have a sortable column.
// If we don't have a sortable column, just add the item
//
pszItemKey = GetSortKey(pItem);
if (pszItemKey == NULL) {
bSorted = FALSE;
}
}
if (bSorted == TRUE) {
//
// Binary search search for insertion point
//
iLow = 0;
iHigh = LBNumItems(m_hWndItems);
iMid = (iHigh + iLow) / 2;
while (iLow < iHigh) {
pListItem = (PCGraphItem)LBData(m_hWndItems, iMid);
pszItemKey2 = GetSortKey(pListItem);
//
// pszItemKey2 should not be NULL if we come this point.
// But if somehow it is NULL, then add the item
//
if (pszItemKey2 == NULL) {
bSorted = FALSE;
break;
}
iComp = lstrcmp(pszItemKey, pszItemKey2);
if (m_iSortDir == DECREASING_SORT) {
iComp = -iComp;
}
if (iComp > 0) {
iLow = iMid + 1;
}
else {
iHigh = iMid;
}
iMid = (iHigh + iLow) / 2;
}
}
if (bSorted == TRUE) {
LBInsert (m_hWndItems, iMid, pItem) ;
}
else {
LBAdd(m_hWndItems, pItem);
}
return TRUE;
}
//
// Delete item from legend
//
void CLegend::DeleteItem (PCGraphItem pItem)
{
INT iIndex ;
// Calling procedure checks for NULL pItem
assert ( NULL != pItem );
iIndex = GetItemIndex (pItem) ;
if (iIndex != LB_ERR) {
LBDelete (m_hWndItems, iIndex) ;
// If deleted the current item
// select the next one (or prev if no next)
if (pItem == m_pCurrentItem) {
if (iIndex == LBNumItems(m_hWndItems))
iIndex--;
if (iIndex >= 0)
m_pCurrentItem = (PCGraphItem)LBData(m_hWndItems, iIndex);
else
m_pCurrentItem = NULL;
LBSetSelection (m_hWndItems, iIndex) ;
m_pCtrl->SelectCounter(m_pCurrentItem);
}
}
}
//
// Clear all items from legend
//
void CLegend::Clear ( void )
{
LBReset (m_hWndItems) ;
m_pCurrentItem = NULL ;
}
//
// Get currently selected item
//
PCGraphItem CLegend::CurrentItem ( void )
{
return (m_pCurrentItem) ;
}
//
// Get legend window
//
HWND CLegend::Window ( void )
{
return m_hWnd;
}
//
// Draw the header for a column
//
void
CLegend::DrawColHeader(
INT iCol,
HDC hDC,
HDC hAttribDC,
RECT& rRect,
BOOL bItemState )
{
HFONT hFontPrev;
INT xBorderWidth, yBorderHeight;
RECT rc = rRect;
xBorderWidth = GetSystemMetrics(SM_CXBORDER);
yBorderHeight = GetSystemMetrics(SM_CYBORDER);
if ( m_fMetafile ) {
if ( eAppear3D == m_pCtrl->Appearance() ) {
DrawEdge(hDC, &rc, EDGE_RAISED, BF_RECT);
} else {
Rectangle (hDC, rc.left, rc.top,
rc.right, rc.bottom );
}
}
if ( iCol < iLegendNumCols ) {
rc.top += yBorderHeight + 1; // Extra pixel so that tops of letters don't get clipped.
rc.bottom -= yBorderHeight;
rc.left += 6 * xBorderWidth;
rc.right -= 6 * xBorderWidth;
if ( bItemState )
OffsetRect(&rc, xBorderWidth, yBorderHeight);
SetTextColor (hDC, m_pCtrl->clrFgnd()) ;
SetBkColor(hDC, m_pCtrl->clrBackCtl()) ;
SetTextAlign (hDC, m_aCols[iCol].iOrientation) ;
hFontPrev = (HFONT)SelectFont(hDC, m_pCtrl->Font());
FitTextOut (
hDC,
hAttribDC,
0,
&rc,
aszColHeader[iCol],
lstrlen(aszColHeader[iCol]),
m_aCols[iCol].iOrientation, FALSE );
SelectFont (hDC, hFontPrev);
}
}
//
// Draw the headers for all columns
//
void
CLegend::DrawHeader(
HDC hDC,
HDC hAttribDC,
RECT& /* rUpdateRect */ )
{
INT iCol;
RECT rectCol;
INT iSumColWidths;
iSumColWidths = 0;
for ( iCol = 0; iCol < iLegendNumCols; iCol++ ) {
INT iColWidth;
Header_GetItemRect( m_hWndHeader, iCol, &rectCol );
iColWidth = rectCol.right - rectCol.left;
if ( 0 < iColWidth ) {
iSumColWidths += iColWidth;
OffsetRect ( &rectCol, m_Rect.left, m_Rect.top );
// Don't draw past the legend bounds.
if ( rectCol.bottom > m_Rect.bottom ) {
break;
} else if ( rectCol.left >= m_Rect.right ) {
break;
} else if ( m_Rect.right < rectCol.right ) {
rectCol.right = m_Rect.right;
}
DrawColHeader( iCol, hDC, hAttribDC, rectCol, FALSE );
}
}
// Handle extra width past last column
if ( iSumColWidths < ( m_Rect.right - m_Rect.left ) ) {
rectCol.left = m_Rect.left + iSumColWidths;
rectCol.right = m_Rect.right;
DrawColHeader( iLegendNumCols, hDC, hAttribDC, rectCol, FALSE );
}
}
//
// Draw the color column for a legend item
//
void
CLegend::DrawColorCol (
PCGraphItem pItem,
INT iCol,
HDC hDC,
HDC hAttribDC,
INT yPos)
{
RECT rect ;
HRGN hRgnOld;
INT iRgn;
INT yMiddle;
if ( 0 < m_aCols[iCol].xWidth ) {
rect.left = m_aCols[iCol].xPos + LegendLeftMargin () ;
rect.top = yPos + 1 ;
rect.right = rect.left + m_aCols[iCol].xWidth - 2 * LegendLeftMargin () ;
rect.bottom = yPos + m_yItemHeight - 1 ;
if( m_fMetafile ) {
OffsetRect ( &rect, m_Rect.left, m_Rect.top );
// Handle clipping.
if ( rect.bottom > m_Rect.bottom ) {
return;
} else if ( rect.left >= m_Rect.right ) {
return;
} else if ( m_Rect.right < rect.right ) {
rect.right = m_Rect.right;
}
}
yMiddle = (rect.top + rect.bottom) / 2;
if ( m_fMetafile ) {
Line (hDC, pItem->Pen(),
rect.left + 1, yMiddle, rect.right - 1, yMiddle) ;
} else {
if ( NULL != hAttribDC && NULL != hDC ) {
hRgnOld = CreateRectRgn(0,0,0,0);
if ( NULL != hRgnOld ) {
iRgn = GetClipRgn(hAttribDC, hRgnOld);
if ( -1 != iRgn ) {
if ( ERROR != IntersectClipRect (hDC, rect.left + 1, rect.top + 1,
rect.right - 1, rect.bottom - 1) ) {
Line (hDC, pItem->Pen(),
rect.left + 1, yMiddle, rect.right - 1, yMiddle) ;
}
// Old clip region is for the ListBox item window, so can't
// use this for printing.
if ( 1 == iRgn ) {
SelectClipRgn(hDC, hRgnOld);
}
}
DeleteObject(hRgnOld);
}
}
}
}
}
void
CLegend::DrawCol (
INT iCol,
HDC hDC,
HDC hAttribDC,
INT yPos,
LPCTSTR lpszValue)
/*
Effect: Draw the value lpszValue for the column iCol on hDC.
Assert: The foreground and background text colors of hDC are
properly set.
*/
{
static TCHAR szMissing[4] = TEXT("---");
RECT rect ;
INT xPos ;
BOOL bNeedEllipses = FALSE;
INT cChars = 0;
TCHAR achBuf[MAX_COL_CHARS + sizeof(ELLIPSES)/sizeof(TCHAR) + 1];
if ( 0 < m_aCols[iCol].xWidth ) {
rect.left = m_aCols[iCol].xPos + LegendLeftMargin() ;
rect.top = yPos ;
rect.right = rect.left + m_aCols[iCol].xWidth - 3 * LegendLeftMargin() ;
rect.bottom = yPos + m_yItemHeight ;
if( m_fMetafile ) {
OffsetRect ( &rect, m_Rect.left, m_Rect.top );
// Don't draw past the legend bounds.
if ( rect.bottom > m_Rect.bottom ) {
return;
} else if ( rect.left >= m_Rect.right ) {
return;
} else if ( m_Rect.right < rect.right ) {
rect.right = m_Rect.right;
}
DrawEdge(hDC, &rect, BDR_SUNKENOUTER, BF_RECT);
}
switch (m_aCols[iCol].iOrientation)
{ // switch
case LEFTORIENTATION:
SetTextAlign (hDC, TA_LEFT) ;
xPos = rect.left ;
break ;
case CENTERORIENTATION:
SetTextAlign (hDC, TA_CENTER) ;
xPos = (rect.left + rect.right) / 2 ;
break ;
case RIGHTORIENTATION:
SetTextAlign (hDC, TA_RIGHT) ;
xPos = rect.right ;
break ;
default:
xPos = rect.left ;
break ;
} // switch
if (lpszValue[0] == 0)
lpszValue = szMissing;
bNeedEllipses = NeedEllipses (
hAttribDC,
lpszValue,
lstrlen(lpszValue),
rect.right - rect.left,
m_xEllipses,
&cChars );
if ( bNeedEllipses ) {
cChars = min(cChars,MAX_COL_CHARS);
memcpy(achBuf,lpszValue,cChars * sizeof(TCHAR));
lstrcpy(&achBuf[cChars],ELLIPSES);
lpszValue = achBuf;
cChars += ELLIPSES_CNT;
}
ExtTextOut (hDC, xPos, rect.top + yBorderHeight, ETO_OPAQUE | ETO_CLIPPED,
&rect, lpszValue, cChars, NULL) ;
}
}
//
// Draw one legend line
//
void
CLegend::DrawItem (
PCGraphItem pItem,
INT yPos,
HDC hDC,
HDC hAttribDC)
{
TCHAR szName[MAX_PATH];
INT iMinWidth = 3;
INT iPrecision = 3;
// Draw Color
DrawColorCol (pItem, eLegendColorCol, hDC, hAttribDC, yPos) ;
// Draw Scale
#if PDH_MIN_SCALE != -7
// display a message if the scale format string gets out of sync with
// the PDH limits
#pragma message ("\nLEGEND.CPP: the scale format statement does not match the PDH\n")
#endif
if ( pItem->Scale() < (FLOAT) 1.0 ) {
iMinWidth = 7;
iPrecision = 7;
} else {
iMinWidth = 3;
iPrecision = 3;
}
FormatNumber (
pItem->Scale(),
szName,
MAX_PATH,
iMinWidth,
iPrecision );
SetTextAlign (hDC, TA_TOP) ;
DrawCol ( eLegendScaleCol, hDC, hAttribDC, yPos, szName) ;
// Draw Counter
DrawCol ( eLegendCounterCol, hDC, hAttribDC, yPos, pItem->Counter()->Name()) ;
// Draw Instance
pItem->Instance()->GetInstanceName(szName);
DrawCol ( eLegendInstanceCol, hDC, hAttribDC, yPos, szName) ;
// Draw Parent
pItem->Instance()->GetParentName(szName);
DrawCol (eLegendParentCol, hDC, hAttribDC, yPos, szName) ;
// Draw Object
DrawCol (eLegendObjectCol, hDC, hAttribDC, yPos, pItem->Object()->Name()) ;
// Draw System
DrawCol (eLegendSystemCol, hDC, hAttribDC, yPos, pItem->Machine()->Name()) ;
}
//
// Resize parts of legend
//
void CLegend::SizeComponents (LPRECT pRect)
{
INT xWidth;
INT yHeight;
m_Rect = *pRect;
xWidth = pRect->right - pRect->left;
yHeight = pRect->bottom - pRect->top;
// If no space, hide window and leave
if (xWidth == 0 || yHeight == 0) {
WindowShow(m_hWnd, FALSE);
return;
}
// If loaded from property bag, set column sizes.
if ( NULL != m_parrColWidthFraction ) {
INT iColTotalWidth;
INT iCol;
HD_ITEM hdi;
hdi.mask = HDI_WIDTH;
iColTotalWidth = xWidth - 2 * LegendLeftMargin();
for ( iCol = 0; iCol < iLegendNumCols; iCol++ ) {
m_aCols[iCol].xWidth = (INT)(m_parrColWidthFraction[iCol] * iColTotalWidth);
hdi.cxy = m_aCols[iCol].xWidth;
Header_SetItem(m_hWndHeader, iCol, &hdi);
}
AdjustColumnWidths ();
delete m_parrColWidthFraction;
m_parrColWidthFraction = NULL;
}
// Show window to assigned position
MoveWindow(m_hWnd, pRect->left, pRect->top, xWidth, yHeight, FALSE);
WindowShow(m_hWnd, TRUE);
// Set the size, position, and visibility of the header control.
SetWindowPos(m_hWndHeader, HWND_TOP, 0, 0, xWidth, m_yHeaderHeight, SWP_SHOWWINDOW);
// Resize legend items window
MoveWindow (m_hWndItems,
LegendLeftMargin (), m_yHeaderHeight + ThreeDPad,
xWidth - 2 * LegendLeftMargin (),
yHeight - m_yHeaderHeight - ThreeDPad - LegendBottomMargin(),
TRUE) ;
}
//
// Repaint legend area
//
void CLegend::OnPaint ( void )
{ // OnPaint
HDC hDC ;
RECT rectFrame;
PAINTSTRUCT ps ;
hDC = BeginPaint (m_hWnd, &ps) ;
if ( eAppear3D == m_pCtrl->Appearance() ) {
// Draw 3D border
GetClientRect(m_hWnd, &rectFrame);
//rectFrame.bottom -= ThreeDPad;
//rectFrame.right -= ThreeDPad;
DrawEdge(hDC, &rectFrame, BDR_SUNKENOUTER, BF_RECT);
}
if (LBNumItems (m_hWndItems) == 0) {
WindowInvalidate(m_hWndItems) ;
}
EndPaint (m_hWnd, &ps) ;
} // OnPaint
//
// Handle user drawn header
//
void CLegend::OnDrawHeader(LPDRAWITEMSTRUCT lpDI)
{
INT iCol = DIIndex(lpDI);
HDC hDC = lpDI->hDC;
RECT rc = lpDI->rcItem;
BOOL bItemState = lpDI->itemState;
// The screen DC is used for the attribute DC.
DrawColHeader( iCol, hDC, hDC, rc, bItemState );
}
//
// Handle user drawn item message
//
void CLegend::OnDrawItem (LPDRAWITEMSTRUCT lpDI)
{
HFONT hFontPrevious ;
HDC hDC ;
PCGraphItem pItem ;
INT iLBIndex ;
COLORREF preBkColor = m_pCtrl->clrBackCtl();
COLORREF preTextColor = m_pCtrl->clrFgnd();
BOOL ResetColor = FALSE ;
hDC = lpDI->hDC ;
iLBIndex = DIIndex (lpDI) ;
if (iLBIndex == -1)
pItem = NULL ;
else
pItem = (PCGraphItem) LBData (m_hWndItems, iLBIndex) ;
// If only a focus change, flip focus rect and leave
if (lpDI->itemAction == ODA_FOCUS) {
DrawFocusRect (hDC, &(lpDI->rcItem)) ;
return;
}
// If item is selected use highlight colors
if (DISelected (lpDI) || pItem == NULL) {
preTextColor = SetTextColor (hDC, GetSysColor (COLOR_HIGHLIGHTTEXT)) ;
preBkColor = SetBkColor (hDC, GetSysColor (COLOR_HIGHLIGHT)) ;
ResetColor = TRUE;
} // Else set BkColor to BackColorLegend selected by the user.
// Clear area
ExtTextOut (hDC, lpDI->rcItem.left, lpDI->rcItem.top,
ETO_OPAQUE, &(lpDI->rcItem), NULL, 0, NULL ) ;
// Draw Legend Item
if (pItem) {
hFontPrevious = SelectFont (hDC, m_pCtrl->Font()) ;
// The screen DC is used as the attribute DC
DrawItem (pItem, lpDI->rcItem.top, hDC, hDC) ;
SelectFont (hDC, hFontPrevious) ;
}
// Draw Focus rect
if (DIFocus (lpDI))
DrawFocusRect (hDC, &(lpDI->rcItem)) ;
// Restore original colors
if (ResetColor == TRUE) {
SetTextColor (hDC, preTextColor) ;
SetBkColor (hDC, preBkColor) ;
}
}
void CLegend::OnMeasureItem (LPMEASUREITEMSTRUCT lpMI) {
lpMI->itemHeight = m_yItemHeight ;
} // OnMeasureItem
void CLegend::OnDblClick ( void )
{
m_pCtrl->DblClickCounter ( m_pCurrentItem );
}
//
// Handle selection change message
//
void CLegend::OnSelectionChanged ( void )
{
INT iIndex ;
PCGraphItem pGItem;
// Get the new selection
iIndex = LBSelection (m_hWndItems) ;
pGItem = (PCGraphItem) LBData (m_hWndItems, iIndex) ;
// if it's bad, reselect the current one
// else request parent control to select new item
if (pGItem == (PCGraphItem)LB_ERR) {
SelectItem(m_pCurrentItem);
}
else {
m_pCurrentItem = pGItem;
m_pCtrl->SelectCounter(pGItem);
}
}
void CLegend::AdjustColumnWidths (
INT iCol
)
{
INT i;
// Adjust positions of following columns
for (i=iCol+1; i < iLegendNumCols; i++) {
m_aCols[i].xPos = m_aCols[i - 1].xPos + m_aCols[i - 1].xWidth ;
}
}
void CLegend::OnColumnWidthChanged (
HD_NOTIFY *phdn
)
{
INT iCol = phdn->iItem;
INT xWidth = phdn->pitem->cxy;
// Update column width
m_aCols[iCol].xWidth = xWidth;
AdjustColumnWidths ( iCol );
// Force update
WindowInvalidate(m_hWndItems) ;
}
LPCTSTR CLegend::GetSortKey (
PCGraphItem pItem
)
{
static TCHAR chNullName = 0;
switch (m_iSortCol) {
case eLegendCounterCol:
return pItem->Counter()->Name();
case eLegendInstanceCol:
if (pItem->Instance()->HasParent())
return _tcschr(pItem->Instance()->Name(), TEXT('/')) + 1;
else
return pItem->Instance()->Name();
case eLegendParentCol:
if (pItem->Instance()->HasParent())
return pItem->Instance()->Name();
else
return &chNullName;
case eLegendObjectCol:
return pItem->Object()->Name();
case eLegendSystemCol:
return pItem->Machine()->Name();
}
return NULL;
}
void
CLegend::OnColumnClicked (
HD_NOTIFY *phdn
)
{
INT i;
INT iCol = phdn->iItem;
INT nItems = LBNumItems (m_hWndItems);
PSORT_ITEM pSortItem;
PSORT_ITEM pSortItems;
BOOL bResort = FALSE;
if (nItems <= 0)
return;
// Can't sort on color or scale factor
if (iCol == eLegendColorCol || iCol == eLegendScaleCol) {
m_iSortDir = NO_SORT;
return;
}
// If repeat click, reverse sort direction
if (iCol == m_iSortCol) {
bResort = TRUE;
m_iSortDir = (m_iSortDir == INCREASING_SORT) ?
DECREASING_SORT : INCREASING_SORT;
} else {
m_iSortCol = iCol;
m_iSortDir = INCREASING_SORT;
}
// Allocate array for sorting
pSortItems = new SORT_ITEM [nItems];
if (pSortItems == NULL) {
return;
}
// Build array of GraphItem/Key pairs
pSortItem = pSortItems;
for (i=0; i<nItems; i++,pSortItem++) {
pSortItem->pGItem = (PCGraphItem)LBData(m_hWndItems, i);
pSortItem->pszKey = GetSortKey(pSortItem->pGItem);
}
// For resort, just reload in reverse order.
if ( !bResort ) {
// Sort by key value
qsort( (PVOID)pSortItems, nItems, sizeof(SORT_ITEM), &LegendSortFunc );
}
// Disable drawing while rebuilding list
LBSetRedraw(m_hWndItems, FALSE);
// Clear list box
LBReset (m_hWndItems) ;
// Reload in sorted order
if ( !bResort && m_iSortDir == INCREASING_SORT) {
for (i=0; i<nItems; i++) {
LBAdd (m_hWndItems, pSortItems[i].pGItem);
}
} else {
for (i=nItems - 1; i>=0; i--) {
LBAdd (m_hWndItems, pSortItems[i].pGItem);
}
}
LBSetRedraw(m_hWndItems, TRUE);
delete pSortItems;
}
//
// Window procedure
//
LRESULT APIENTRY GraphLegendWndProc (HWND hWnd, UINT uiMsg, WPARAM wParam,
LPARAM lParam)
{
CLegend *pLegend;
BOOL bCallDefProc ;
LRESULT lReturnValue ;
RECT rect;
pLegend = (PLEGEND)GetWindowLongPtr(hWnd,0);
bCallDefProc = FALSE ;
lReturnValue = 0L ;
switch (uiMsg)
{
case WM_CREATE:
pLegend = (PLEGEND)((CREATESTRUCT*)lParam)->lpCreateParams;
SetWindowLongPtr(hWnd,0,(INT_PTR)pLegend);
break;
case WM_DESTROY:
pLegend->m_hWnd = NULL;
break ;
case WM_LBUTTONDBLCLK:
case WM_LBUTTONDOWN:
SendMessage(GetParent(hWnd), uiMsg, wParam, lParam);
break;
case WM_COMMAND:
switch (HIWORD (wParam))
{ // switch
case LBN_DBLCLK:
pLegend->OnDblClick () ;
break ;
case LBN_SELCHANGE:
pLegend->OnSelectionChanged () ;
break ;
case LBN_SETFOCUS:
pLegend->m_pCtrl->Activate();
break;
default:
bCallDefProc = TRUE ;
} // switch
break ;
case WM_NOTIFY:
switch (((LPNMHDR)lParam)->code)
{
case HDN_ENDTRACK:
pLegend->OnColumnWidthChanged((HD_NOTIFY*) lParam);
break;
case HDN_ITEMCLICK:
pLegend->OnColumnClicked((HD_NOTIFY*) lParam);
pLegend->m_pCtrl->Activate();
break;
}
return FALSE;
break;
case WM_DRAWITEM:
switch (((LPDRAWITEMSTRUCT)lParam)->CtlID) {
case LIST_WND:
pLegend->OnDrawItem((LPDRAWITEMSTRUCT) lParam) ;
break;
case HDR_WND:
pLegend->OnDrawHeader((LPDRAWITEMSTRUCT) lParam) ;
break;
}
break ;
case WM_MEASUREITEM:
pLegend->OnMeasureItem ((LPMEASUREITEMSTRUCT) lParam) ;
break ;
case WM_DELETEITEM:
break ;
case WM_ERASEBKGND:
GetClientRect(hWnd, &rect);
Fill((HDC)wParam, pLegend->m_pCtrl->clrBackCtl(), &rect);
return TRUE;
case WM_PAINT:
pLegend->OnPaint () ;
break ;
case WM_SETFOCUS:
SetFocus(pLegend->m_hWndItems);
break ;
default:
bCallDefProc = TRUE ;
}
if (bCallDefProc)
lReturnValue = DefWindowProc (hWnd, uiMsg, wParam, lParam) ;
return (lReturnValue);
}
LRESULT APIENTRY
HdrWndProc (
HWND hWnd,
UINT uiMsg,
WPARAM wParam,
LPARAM lParam
)
{
RECT rect;
CLegend *pLegend;
// Parent window carries the Legend object pointer
pLegend = (PLEGEND)GetWindowLongPtr(GetParent(hWnd),0);
if (uiMsg == WM_ERASEBKGND) {
GetClientRect(hWnd, &rect);
Fill((HDC)wParam, pLegend->m_pCtrl->clrBackCtl(), &rect);
return TRUE;
}
// Do the default processing
#ifdef STRICT
return CallWindowProc(pLegend->m_DefaultWndProc, hWnd, uiMsg, wParam, lParam);
#else
return CallWindowProc((FARPROC)pLegend->m_DefaultWndProc, hWnd, uiMsg, wParam, lParam);
#endif
}
//
// Compute minimum width of legend
//
INT CLegend::MinWidth ( void )
{
return 0 ;
}
//
// Compute minimum height of legend
//
INT CLegend::MinHeight ( INT yMaxHeight )
{
INT yHeight = m_yHeaderHeight + m_yItemHeight + 2*ThreeDPad
+ LegendBottomMargin();
return (yMaxHeight >= yHeight) ? yHeight : 0;
}
//
// Compute prefered height of legend
//
INT CLegend::Height (INT yMaxHeight)
{
INT nItems;
INT nPrefItems;
// Determine preferred number of items to show
nPrefItems = PinInclusive(LBNumItems(m_hWndItems), 1, iMaxVisibleItems);
// Determine number of items that will fit
nItems = (yMaxHeight - m_yHeaderHeight - 2*ThreeDPad - LegendBottomMargin())
/ m_yItemHeight;
// Use smaller number
nItems = min(nItems, nPrefItems);
// If no items will fit, return zero
if (nItems == 0)
return 0;
// Return height of legend with nItems
return m_yHeaderHeight + 2*ThreeDPad + nItems * m_yItemHeight
+ LegendBottomMargin();
}
#ifdef KEEP_PRINT
void CLegend::Print (HDC hDC, RECT rectLegend)
{
INT yItemHeight ;
HFONT hFontItems ;
PCGraphItem pItem ;
INT iIndex ;
INT iIndexNum ;
yItemHeight = m_yItemHeight ;
hFontItems = m_hFontItems ;
m_hFontItems = hFontPrinterScales ;
SelectFont (hDC, m_hFontItems) ;
m_yItemHeight = FontHeight (hDC, TRUE) ;
iIndexNum = LBNumItems (m_hWndItems);
for (iIndex = 0; iIndex < iIndexNum; iIndex++)
{
pItem = (PCGraphItem) LBData (m_hWndItems, iIndex) ;
DrawItem (pItem, iIndex * m_yItemHeight, hDC) ;
}
m_hFontItems = hFontItems ;
m_yItemHeight = yItemHeight ;
SelectBrush (hDC, GetStockObject (HOLLOW_BRUSH)) ;
SelectPen (hDC, GetStockObject (BLACK_PEN)) ;
Rectangle (hDC, 0, 0,
rectLegend.right - rectLegend.left,
rectLegend.bottom - rectLegend.top) ;
}
#endif
void
CLegend::ChangeFont(
HDC hDC
)
{
HD_LAYOUT hdl;
WINDOWPOS wp;
RECT rectLayout;
// Assign font to header
SetFont(m_hWndHeader, m_pCtrl->Font());
// Get prefered height of header control
// (use arbitrary rect for allowed area)
rectLayout.left = 0;
rectLayout.top = 0;
rectLayout.right = 32000;
rectLayout.bottom = 32000;
wp.cy = 0;
hdl.prc = &rectLayout;
hdl.pwpos = &wp;
Header_Layout(m_hWndHeader, &hdl);
m_yHeaderHeight = wp.cy + 2 * yBorderHeight;
// Set up DC for font measurements
SelectFont (hDC, m_pCtrl->Font()) ;
// Compute height of legend line
SelectFont (hDC, m_hFontItems) ;
m_yItemHeight = FontHeight (hDC, TRUE) + 2 * yBorderHeight;
LBSetItemHeight(m_hWndItems, m_yItemHeight);
// Compute width of "..."
m_xEllipses = TextWidth (hDC, ELLIPSES) ;
}
void
CLegend::Render(
HDC hDC,
HDC hAttribDC,
BOOL /*fMetafile*/,
BOOL /*fEntire*/,
LPRECT prcUpdate )
{
PCGraphItem pItem ;
INT iIndex ;
INT iIndexNum ;
RECT rectPaint;
HFONT hFontPrevious;
// if no space assigned, return
if (m_Rect.top == m_Rect.bottom)
return;
// if no painting needed, return
if (!IntersectRect(&rectPaint, &m_Rect, prcUpdate))
return;
m_fMetafile = TRUE;
hFontPrevious = SelectFont (hDC, m_pCtrl->Font()) ;
DrawHeader ( hDC, hAttribDC, rectPaint );
SelectFont (hDC, hFontPrevious) ;
iIndexNum = LBNumItems (m_hWndItems);
hFontPrevious = SelectFont (hDC, m_pCtrl->Font()) ;
for (iIndex = 0; iIndex < iIndexNum; iIndex++) {
pItem = (PCGraphItem) LBData (m_hWndItems, iIndex) ;
DrawItem (
pItem,
m_yHeaderHeight + ( iIndex * m_yItemHeight ),
hDC,
hAttribDC) ;
}
SelectFont (hDC, hFontPrevious) ;
m_fMetafile = FALSE;
SelectBrush (hDC, GetStockObject (HOLLOW_BRUSH)) ;
SelectPen (hDC, GetStockObject (BLACK_PEN)) ;
if ( eAppear3D == m_pCtrl->Appearance() ) {
// Draw 3D border
DrawEdge(hDC, &m_Rect, BDR_SUNKENOUTER, BF_RECT);
}
}
HRESULT
CLegend::GetNextValue (
TCHAR*& pszNext,
DOUBLE& rdValue )
{
HRESULT hr = NOERROR;
TCHAR szValue[MAX_PATH];
INT iDataLen;
INT iLen;
VARIANT vValue;
rdValue = -1;
iDataLen = wcscspn (pszNext, L"\t");
iLen = min ( iDataLen, MAX_COL_CHARS );
lstrcpyn ( szValue, pszNext, iLen + 1 );
szValue[iLen] = L'\0';
VariantInit( &vValue );
vValue.vt = VT_BSTR;
vValue.bstrVal = SysAllocString ( szValue );
hr = VariantChangeTypeEx( &vValue, &vValue, LCID_SCRIPT, VARIANT_NOUSEROVERRIDE, VT_R8 );
if ( SUCCEEDED(hr) ) {
rdValue = vValue.dblVal;
}
pszNext += iDataLen + 1 ;
VariantClear( &vValue );
return hr;
}
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