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[#40] Track Map: General improvements and bugfixes (Part 18.1: Determ…
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…ining actual time from cursor position)
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@tomas-nestorovic
tomas-nestorovic committed Aug 20, 2020
1 parent 1c3982e commit fc0f5b7
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Showing 2 changed files with 45 additions and 27 deletions.
68 changes: 43 additions & 25 deletions Main/src/ViewTrackMap.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -245,11 +245,11 @@

void CTrackMapView::TimesToPixels(TSector nSectors,PINT pInOutBuffer,PCWORD pInSectorLengths) const{
// converts times (in nanoseconds) in Buffer to pixels
const int nNanosecondsPerByte=IMAGE->EstimateNanosecondsPerOneByte();
if (showTimed)
if (showTimed){
const int nNanosecondsPerByte=IMAGE->EstimateNanosecondsPerOneByte();
for( TSector s=0; s<nSectors; s++ )
pInOutBuffer[s] = SECTOR1_X + (pInOutBuffer[s]/nNanosecondsPerByte>>zoomLengthFactor);
else
}else
for( TSector s=0; s<nSectors; s++ )
pInOutBuffer[s] = s>0
? pInOutBuffer[s-1]+(pInSectorLengths[s-1]>>zoomLengthFactor)+SECTOR_MARGIN
Expand Down Expand Up @@ -411,7 +411,7 @@
const POINT ptZ={ ptA.x+TTrackLength::FromTime(longestTrackNanoseconds,nNanosecondsPerByte).GetPixelCount(zoomLengthFactor), ptA.y };
pDC->LineTo(ptZ);
// . determinining the primary granuality of the timeline
static const TCHAR TimePrefixes[]=_T("nnnuuummm"); // nano, micro, milli
static const TCHAR TimePrefixes[]=_T("nnnµµµmmm"); // nano, micro, milli
TCHAR label[16];
int intervalBig=1, unitPrefix=0;
for( int ns=longestTrackNanoseconds; true; intervalBig*=10 ){
Expand Down Expand Up @@ -463,7 +463,7 @@
//nop (View destroyed by its owner)
}

void CTrackMapView::__updateStatusBarIfCursorOutsideAnySector__() const{
void CTrackMapView::ResetStatusBarMessage() const{
// updates the MainWindow's StatusBar when cursor isn't over any Sector
CMainWindow::__setStatusBarText__(nullptr);
}
Expand All @@ -478,7 +478,7 @@
SetScrollPos( SB_HORZ, iScrollX, FALSE );
SetScrollPos( SB_VERT, iScrollY, FALSE );
// - updating the MainWindow's StatusBar
__updateStatusBarIfCursorOutsideAnySector__();
ResetStatusBarMessage();
// - creating RainbowBrushes, see "Using out-of-phase sine waves to make rainbows" at http://krazydad.com/tutorials/makecolors.php
for( int t=TRACK_MAP_COLORS_COUNT; t--; )
rainbowBrushes[t]=(HBRUSH)CBrush( RGB( 128 + 127*sin( (float)2*M_PI*t/TRACK_MAP_COLORS_COUNT ),
Expand All @@ -503,17 +503,24 @@
: longestTrack.GetZoomFactorToFitWidth(cx);
}

bool CTrackMapView::__getPhysicalAddressFromPoint__(POINT point,TPhysicalAddress &rOutChs,BYTE &rnOutSectorsToSkip){
bool CTrackMapView::GetPhysicalAddressAndNanosecondsFromPoint(POINT point,TPhysicalAddress &rOutChs,BYTE &rnOutSectorsToSkip,int &rOutNanoseconds){
// True <=> given actual scroll position, the Point falls into a Sector, otherwise False
CClientDC dc(this);
OnPrepareDC(&dc);
dc.DPtoLP(&point);
point.y-=TRACK0_Y;
if (point.y>=0 && point.y<IMAGE->GetTrackCount()*TRACK_HEIGHT){
// cursor over a Track
// . estimating the time on timeline at which the cursor points to
if (showTimed){
const int ns=((point.x-SECTOR1_X)<<zoomLengthFactor)*IMAGE->EstimateNanosecondsPerOneByte();
rOutNanoseconds= ns<=longestTrackNanoseconds ? ns : -1;
}else
rOutNanoseconds=-1;
// . determining the Sector on which the cursor hovers
const TTrack track=point.y/TRACK_HEIGHT;
const THead nSides=__getNumberOfFormattedSidesInImage__(IMAGE);
const div_t d=div((int)track,nSides);
const div_t d=div(track,nSides);
TSectorId bufferId[(TSector)-1];
WORD bufferLength[(TSector)-1];
int bufferStarts[(TSector)-1];
Expand All @@ -533,33 +540,44 @@

afx_msg void CTrackMapView::OnMouseMove(UINT nFlags,CPoint point){
// cursor moved over this view
TPhysicalAddress chs; BYTE nSectorsToSkip;
if (__getPhysicalAddressFromPoint__(point,chs,nSectorsToSkip)){
TPhysicalAddress chs; BYTE nSectorsToSkip; int nanoseconds;
const bool cursorOverSector=GetPhysicalAddressAndNanosecondsFromPoint(point,chs,nSectorsToSkip,nanoseconds);
TCHAR buf[80], *p=buf; *p='\0';
if (showTimed && nanoseconds>=0){
// cursor in timeline range
float unit; TCHAR unitPrefix;
if (nanoseconds>TIME_MILLI(1))
unit=nanoseconds/1e6f, unitPrefix='m';
else if (nanoseconds>TIME_MICRO(1))
unit=nanoseconds/1e3f, unitPrefix='µ';
else
unit=nanoseconds, unitPrefix='n';
p+=_stprintf( buf, _T("T = approx. %.2f %cs%c "), unit, unitPrefix, cursorOverSector?',':'\0' );
}
if (cursorOverSector){
// cursor over a Sector
TCHAR buf[40];
::wsprintf( buf, _T("Tr%d, %s: "), chs.GetTrackNumber(__getNumberOfFormattedSidesInImage__(IMAGE)), (LPCTSTR)chs.sectorId.ToString() );
::wsprintf( p, _T("Tr%d, %s: "), chs.GetTrackNumber(__getNumberOfFormattedSidesInImage__(IMAGE)), (LPCTSTR)chs.sectorId.ToString() );
CDos::TSectorStatus status;
DOS->GetSectorStatuses( chs.cylinder, chs.head, 1, &chs.sectorId, &status );
switch (status){
case CDos::TSectorStatus::SYSTEM : ::lstrcat(buf,_T("System")); break;
case CDos::TSectorStatus::UNAVAILABLE: ::lstrcat(buf,_T("Unavailable")); break;
case CDos::TSectorStatus::SKIPPED : ::lstrcat(buf,_T("Skipped")); break;
case CDos::TSectorStatus::BAD : ::lstrcat(buf,_T("Bad")); break;
case CDos::TSectorStatus::OCCUPIED : ::lstrcat(buf,_T("Occupied")); break;
case CDos::TSectorStatus::RESERVED : ::lstrcat(buf,_T("Reserved")); break;
case CDos::TSectorStatus::EMPTY : ::lstrcat(buf,_T("Empty")); break;
default : ::lstrcat(buf,_T("Unknown")); break;
case CDos::TSectorStatus::SYSTEM : ::lstrcat(p,_T("System")); break;
case CDos::TSectorStatus::UNAVAILABLE: ::lstrcat(p,_T("Unavailable")); break;
case CDos::TSectorStatus::SKIPPED : ::lstrcat(p,_T("Skipped")); break;
case CDos::TSectorStatus::BAD : ::lstrcat(p,_T("Bad")); break;
case CDos::TSectorStatus::OCCUPIED : ::lstrcat(p,_T("Occupied")); break;
case CDos::TSectorStatus::RESERVED : ::lstrcat(p,_T("Reserved")); break;
case CDos::TSectorStatus::EMPTY : ::lstrcat(p,_T("Empty")); break;
default : ::lstrcat(p,_T("Unknown")); break;
}
CMainWindow::__setStatusBarText__(buf);
}else
__updateStatusBarIfCursorOutsideAnySector__();
}
CMainWindow::__setStatusBarText__(buf);
}

afx_msg void CTrackMapView::OnLButtonUp(UINT nFlags,CPoint point){
// left mouse button released
if (app.IsInGodMode() && !IMAGE->IsWriteProtected()){
TPhysicalAddress chs; BYTE nSectorsToSkip;
if (__getPhysicalAddressFromPoint__(point,chs,nSectorsToSkip)){
TPhysicalAddress chs; BYTE nSectorsToSkip; int nanoseconds;
if (GetPhysicalAddressAndNanosecondsFromPoint(point,chs,nSectorsToSkip,nanoseconds)){
// cursor over a Sector
WORD w; TFdcStatus sr;
IMAGE->GetSectorData( chs, nSectorsToSkip, false, &w, &sr );
Expand Down
4 changes: 2 additions & 2 deletions Main/src/ViewTrackMap.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -48,8 +48,8 @@
void OnDraw(CDC *pDC) override;
void PostNcDestroy() override;
void TimesToPixels(TSector nSectors,PINT pInOutBuffer,PCWORD pInSectorLengths) const;
bool __getPhysicalAddressFromPoint__(POINT point,TPhysicalAddress &rOutChs,BYTE &rnOutSectorsToSkip);
void __updateStatusBarIfCursorOutsideAnySector__() const;
bool GetPhysicalAddressAndNanosecondsFromPoint(POINT point,TPhysicalAddress &rOutChs,BYTE &rnOutSectorsToSkip,int &rOutNanoseconds);
void ResetStatusBarMessage() const;
void __updateLogicalDimensions__();
afx_msg int OnCreate(LPCREATESTRUCT lpcs);
afx_msg void OnSize(UINT nType,int cx,int cy);
Expand Down

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