417 lines
11 KiB
C++
417 lines
11 KiB
C++
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/*++
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Copyright (C) 1996-1999 Microsoft Corporation
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Module Name:
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statbar.cpp
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Abstract:
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Implementation of the value bar class.
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--*/
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#include <stdio.h>
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#include "polyline.h"
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#include "statbar.h"
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#define MAX_STAT_LABEL_LEN 32
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static TCHAR aszItemLabel[STAT_ITEM_CNT][MAX_STAT_LABEL_LEN];
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static BOOLEAN fInitDone = FALSE;
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CStatsBar::CStatsBar(void)
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: m_pCtrl ( NULL ),
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m_iFontHeight ( 0 ),
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m_iValueWidth ( 0 ),
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m_pGraphItemToInit ( NULL )
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{
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memset (&m_Rect, 0, sizeof(m_Rect));
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}
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CStatsBar::~CStatsBar(void)
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{
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}
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BOOL CStatsBar::Init (PSYSMONCTRL pCtrl, HWND /* hWnd */ )
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{
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INT i;
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// save pointer to primary object
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m_pCtrl = pCtrl;
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// First time through, load the item labels
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if (!fInitDone) {
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fInitDone = TRUE;
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for (i=0; i<STAT_ITEM_CNT; i++) {
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LoadString(g_hInstance, (IDS_STAT_BASE + i), aszItemLabel[i], MAX_STAT_LABEL_LEN);
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}
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}
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// Initialze the stat values
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Clear();
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return TRUE;
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}
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void CStatsBar::SizeComponents(LPRECT pRect)
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{
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// Just save the rectangle
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m_Rect = *pRect;
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}
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void CStatsBar::SetTimeSpan(double dSeconds)
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{
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m_StatItem[STAT_TIME].dNewValue = dSeconds;
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}
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void CStatsBar::Update(HDC hDC, PCGraphItem pGraphItem)
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{
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double dMin, dMax, dAvg, dVal;
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PSTAT_ITEM pItem;
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INT i;
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HRESULT hr;
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PDH_STATUS stat;
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LONG lCtrStat;
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// if no space assigned, return
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if (m_Rect.top == m_Rect.bottom) {
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m_pGraphItemToInit = pGraphItem;
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m_StatItem[0].iInitialized = 0;
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return;
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}
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if (pGraphItem == NULL) {
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pItem = &m_StatItem[0];
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for (i=0; i<STAT_ITEM_CNT-1; i++, pItem++) {
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pItem->dNewValue = 0.0;
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pItem->iInitialized = 0;
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}
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} else {
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stat = pGraphItem->GetValue(&dVal, &lCtrStat);
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if (stat == 0 && IsSuccessSeverity(lCtrStat))
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m_StatItem[STAT_LAST].dNewValue = dVal;
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else
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m_StatItem[STAT_LAST].dNewValue = 0.0;
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hr = pGraphItem->GetStatistics(&dMax, &dMin, &dAvg, &lCtrStat);
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if (SUCCEEDED(hr) && IsSuccessSeverity(lCtrStat)) {
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m_StatItem[STAT_MIN].dNewValue = dMin;
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m_StatItem[STAT_MAX].dNewValue = dMax;
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m_StatItem[STAT_AVG].dNewValue = dAvg;
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} else {
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m_StatItem[STAT_MIN].dNewValue = 0.0;
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m_StatItem[STAT_MAX].dNewValue = 0.0;
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m_StatItem[STAT_AVG].dNewValue = 0.0;
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}
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m_StatItem[0].dwCounterType = pGraphItem->m_CounterInfo.dwType;
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m_StatItem[0].iInitialized = 1;
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}
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// hDC is null if updating only values.
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if (hDC != NULL) {
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SetBkColor(hDC, m_pCtrl->clrBackCtl());
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SetTextColor(hDC, m_pCtrl->clrFgnd());
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DrawValues(hDC,FALSE);
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}
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}
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void CStatsBar::Clear( void )
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{
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PSTAT_ITEM pItem;
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INT i;
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pItem = &m_StatItem[0];
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for (i=0; i<STAT_ITEM_CNT-1; i++, pItem++) {
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pItem->dValue = pItem->dNewValue = 0.0;
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pItem->iInitialized = 0;
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}
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}
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void CStatsBar::Draw (HDC hDC, HDC /* hAttribDC */, PRECT prcUpdate)
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{
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RECT rectFrame;
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PSTAT_ITEM pItem;
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HFONT hFontOld;
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INT i;
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RECT rectPaint;
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RECT rectClip;
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// if no space assigned, return
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if (m_Rect.top == m_Rect.bottom)
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return;
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// if no painting needed, return
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if (!IntersectRect(&rectPaint, &m_Rect, prcUpdate))
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return;
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SetBkMode(hDC, TRANSPARENT);
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SetTextColor(hDC, m_pCtrl->clrFgnd());
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SetTextAlign(hDC, TA_LEFT|TA_TOP);
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hFontOld = SelectFont(hDC, m_pCtrl->Font());
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pItem = &m_StatItem[0];
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// If the stat bar was hidden on Update, for example if
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// the control was loaded from a property bag, or if a
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// counter was selected while the stat bar was hidden,
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// initialize it here.
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if ( 0 == pItem->iInitialized ) {
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Update ( NULL, m_pGraphItemToInit );
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}
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// Draw Label and 3D box for each item
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for (i=0; i<STAT_ITEM_CNT; i++, pItem++) {
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rectClip.top = m_Rect.top + pItem->yPos + RECT_BORDER;
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rectClip.bottom = rectClip.top + m_iFontHeight;
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rectClip.left = m_Rect.left + pItem->xPos;
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rectClip.right = rectClip.left + pItem->xLabelWidth;
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ExtTextOut(
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hDC,
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m_Rect.left + pItem->xPos,
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m_Rect.top + pItem->yPos + RECT_BORDER,
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0,
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&rectClip,
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aszItemLabel[i],
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lstrlen(aszItemLabel[i]),
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NULL );
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if ( eAppear3D == m_pCtrl->Appearance() ) {
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rectFrame.left = m_Rect.left + pItem->xPos + pItem->xLabelWidth + VALUE_MARGIN;
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rectFrame.right = rectFrame.left + m_iValueWidth + 2 * RECT_BORDER;
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rectFrame.top = m_Rect.top + pItem->yPos;
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rectFrame.bottom = rectFrame.top + m_iFontHeight + 2 * RECT_BORDER;
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DrawEdge(hDC, &rectFrame, BDR_SUNKENOUTER, BF_RECT);
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}
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}
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SelectFont(hDC, hFontOld);
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SetBkMode(hDC, OPAQUE);
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SetBkColor(hDC, m_pCtrl->clrBackCtl());
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DrawValues(hDC, TRUE);
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}
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void CStatsBar::DrawValues(HDC hDC, BOOL bForce)
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{
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RECT rectValue ;
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TCHAR szValue [20] ;
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HFONT hFontOld;
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PSTAT_ITEM pItem;
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INT i;
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INT nSecs, nMins, nHours, nDays;
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SetTextAlign(hDC, TA_RIGHT | TA_TOP);
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hFontOld = SelectFont(hDC, m_pCtrl->Font());
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pItem = &m_StatItem[0];
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for (i=0; i<STAT_ITEM_CNT; i++,pItem++) {
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if ((pItem->dValue == pItem->dNewValue) && !bForce)
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continue;
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pItem->dValue = pItem->dNewValue;
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rectValue.top = m_Rect.top + pItem->yPos + RECT_BORDER;
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rectValue.bottom = rectValue.top + m_iFontHeight;
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rectValue.left = m_Rect.left + pItem->xPos + pItem->xLabelWidth + VALUE_MARGIN + RECT_BORDER;
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rectValue.right = rectValue.left + m_iValueWidth - 1;
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if (i == STAT_TIME) {
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LPTSTR pszTimeSep = NULL;
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pszTimeSep = GetTimeSeparator ( );
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nSecs = (INT)pItem->dValue;
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nMins = nSecs / 60;
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nSecs -= nMins * 60;
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nHours = nMins / 60;
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nMins -= nHours * 60;
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nDays = nHours / 24;
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nHours -= nDays * 24;
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if (nDays != 0) {
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_stprintf(szValue, SZ_DAYTIME_FORMAT, nDays, nHours, pszTimeSep, nMins);
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} else {
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if (nHours != 0)
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_stprintf(szValue, SZ_HRTIME_FORMAT, nHours, pszTimeSep, nMins, pszTimeSep, nSecs);
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else
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_stprintf(szValue, SZ_MINTIME_FORMAT, nMins, pszTimeSep, nSecs);
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}
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} else {
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if (pItem->dValue > E_MEDIUM_VALUE) {
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if (pItem->dValue > E_TOO_LARGE_VALUE) {
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lstrcpy (szValue, SZ_VALUE_TOO_HIGH) ;
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} else {
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if ( pItem->dValue <= E_LARGE_VALUE ) {
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FormatNumber (
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pItem->dValue,
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szValue,
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20,
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eMinimumWidth,
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eMediumPrecision );
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} else {
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FormatScientific (
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pItem->dValue,
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szValue,
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20,
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eMinimumWidth,
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eLargePrecision );
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}
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}
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} else if (pItem->dValue < -E_MEDIUM_VALUE) {
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if (pItem->dValue < -E_TOO_LARGE_VALUE) {
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lstrcpy (szValue, SZ_VALUE_TOO_LOW) ;
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} else {
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if ( pItem->dValue >= -E_LARGE_VALUE ) {
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FormatNumber (
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pItem->dValue,
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szValue,
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20,
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eMinimumWidth,
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eMediumPrecision );
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} else {
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FormatScientific (
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pItem->dValue,
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szValue,
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20,
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eMinimumWidth,
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eLargePrecision );
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}
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}
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} else {
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if ( ( m_StatItem[0].dwCounterType &
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( PERF_TYPE_COUNTER | PERF_TYPE_TEXT ) ) ) {
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FormatNumber (
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pItem->dValue,
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szValue,
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20,
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eMinimumWidth,
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eSmallPrecision );
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} else {
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FormatNumber (
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pItem->dValue,
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szValue,
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20,
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eMinimumWidth,
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eIntegerPrecision );
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}
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}
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}
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// TextOut (hDC, rectValue.right, rectValue.top, szValue, lstrlen (szValue)) ;
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ExtTextOut (hDC, rectValue.right, rectValue.top, ETO_OPAQUE, &rectValue,
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szValue, lstrlen (szValue), NULL) ;
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}
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SelectFont(hDC, hFontOld);
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}
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INT CStatsBar::Height (INT iMaxHeight, INT iMaxWidth)
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{
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INT iHeight;
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INT xPos,yPos;
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PSTAT_ITEM pItem;
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INT i,j;
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INT iItemWidth;
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INT iFirst;
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INT iRemainder;
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iMaxWidth -= 2 * RECT_BORDER;
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xPos = 0;
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yPos = 0;
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iFirst = 0;
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pItem = &m_StatItem[0];
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for (i=0; i<STAT_ITEM_CNT; i++,pItem++) {
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iItemWidth = pItem->xLabelWidth + VALUE_MARGIN + m_iValueWidth;
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if (iItemWidth > iMaxWidth)
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return 0;
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if (xPos + iItemWidth > iMaxWidth) {
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iRemainder = iMaxWidth - xPos + LABEL_MARGIN;
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xPos = 0;
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yPos += m_iFontHeight + LINE_SPACING;
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for (j=iFirst; j<i; j++) {
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m_StatItem[j].xPos += iRemainder;
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}
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iFirst = i;
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}
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pItem->xPos = xPos;
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pItem->yPos = yPos;
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xPos += (iItemWidth + LABEL_MARGIN);
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}
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iRemainder = (iMaxWidth - xPos) + LABEL_MARGIN;
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for (j=iFirst; j<STAT_ITEM_CNT; j++) {
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m_StatItem[j].xPos += iRemainder;
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}
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// if allowed height is not enough, return zero
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iHeight = yPos + m_iFontHeight + 2 * RECT_BORDER;
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return (iHeight <= iMaxHeight) ? iHeight : 0;
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}
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void CStatsBar::ChangeFont(
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HDC hDC
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)
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{
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INT xPos,yPos;
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TCHAR szValue[20];
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HFONT hFontOld;
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PSTAT_ITEM pItem;
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INT i;
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SIZE size;
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|
||
|
|
hFontOld = (HFONT)SelectFont(hDC, m_pCtrl->Font());
|
||
|
|
|
||
|
|
// Get width/height of longest value string
|
||
|
|
FormatNumber (
|
||
|
|
E_LARGE_VALUE,
|
||
|
|
szValue,
|
||
|
|
20,
|
||
|
|
eMinimumWidth,
|
||
|
|
eLargePrecision );
|
||
|
|
|
||
|
|
GetTextExtentPoint32(hDC, szValue, lstrlen(szValue), &size);
|
||
|
|
m_iValueWidth = size.cx;
|
||
|
|
m_iFontHeight = size.cy;
|
||
|
|
|
||
|
|
// Do for all stat items
|
||
|
|
xPos = 0;
|
||
|
|
yPos = 0;
|
||
|
|
pItem = &m_StatItem[0];
|
||
|
|
|
||
|
|
for (i=0; i<STAT_ITEM_CNT; i++,pItem++) {
|
||
|
|
pItem->xLabelWidth = TextWidth(hDC, aszItemLabel[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
SelectFont(hDC, hFontOld);
|
||
|
|
}
|