src/OScopeCtrl.cpp

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2003-2011 aMule Team ( admin@amule.org / http://www.amule.org )
   5 // Copyright (c) 2002-2011 Merkur ( devs@emule-project.net / http://www.emule-project.net )
   6 //
   7 // Any parts of this program derived from the xMule, lMule or eMule project,
   8 // or contributed by third-party developers are copyrighted by their
   9 // respective authors.
  10 //
  11 // This program is free software; you can redistribute it and/or modify
  12 // it under the terms of the GNU General Public License as published by
  13 // the Free Software Foundation; either version 2 of the License, or
  14 // (at your option) any later version.
  15 //
  16 // This program is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20 //
  21 // You should have received a copy of the GNU General Public License
  22 // along with this program; if not, write to the Free Software
  23 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  24 //
  25
  26 #include <cmath>
  27 #include <wx/dcmemory.h>
  28 #include <wx/dcclient.h>
  29 #include <wx/dcbuffer.h>
  30
  31 #include <common/Format.h>
  32
  33 #include "amule.h"              // Needed for theApp
  34 #include "amuleDlg.h"           // Needed for CamuleDlg
  35 #include "Logger.h"             // Needed for AddLogLineM
  36 #include "OScopeCtrl.h"         // Interface declarations
  37 #include "OtherFunctions.h"     // Needed for CastSecondsToHM
  38 #include "Statistics.h"
  39
  40
  41 BEGIN_EVENT_TABLE(COScopeCtrl,wxControl)
  42         EVT_PAINT(COScopeCtrl::OnPaint)
  43         EVT_SIZE(COScopeCtrl::OnSize)
  44 END_EVENT_TABLE()
  45
  46
  47 const wxColour crPreset [ 16 ] = {
  48         wxColour( 0xFF, 0x00, 0x00 ),  wxColour( 0xFF, 0xC0, 0xC0 ),
  49         wxColour( 0xFF, 0xFF, 0x00 ),  wxColour( 0xFF, 0xA0, 0x00 ),
  50         wxColour( 0xA0, 0x60, 0x00 ),  wxColour( 0x00, 0xFF, 0x00 ),
  51         wxColour( 0x00, 0xA0, 0x00 ),  wxColour( 0x00, 0x00, 0xFF ),
  52         wxColour( 0x00, 0xA0, 0xFF ),  wxColour( 0x00, 0xFF, 0xFF ),
  53         wxColour( 0x00, 0xA0, 0xA0 ),  wxColour( 0xC0, 0xC0, 0xFF ),
  54         wxColour( 0xFF, 0x00, 0xFF ),  wxColour( 0xA0, 0x00, 0xA0 ),
  55         wxColour( 0xFF, 0xFF, 0xFF ),  wxColour( 0x80, 0x80, 0x80 )
  56 };
  57
  58 COScopeCtrl::COScopeCtrl(int cntTrends, int nDecimals, StatsGraphType type, wxWindow* parent)
  59         : wxControl(parent, -1, wxDefaultPosition, wxDefaultSize)
  60         , timerRedraw(this)
  61 {
  62         // since plotting is based on a LineTo for each new point
  63         // we need a starting point (i.e. a "previous" point)
  64         // use 0.0 as the default first point.
  65         // these are public member variables, and can be changed outside
  66         // (after construction).
  67
  68         // G.Hayduk: NTrends is the number of trends that will be drawn on
  69         // the plot. First 15 plots have predefined colors, but others will
  70         // be drawn with white, unless you call SetPlotColor
  71         nTrends = cntTrends;
  72         pdsTrends = new PlotData_t[nTrends];
  73
  74         PlotData_t* ppds = pdsTrends;
  75         for(unsigned i=0; i<nTrends; ++i, ++ppds){
  76                 ppds->crPlot = (i<15 ? crPreset[i] : *wxWHITE);
  77                 ppds->penPlot=*(wxThePenList->FindOrCreatePen(ppds->crPlot, 1, wxSOLID));
  78                 ppds->fPrev = ppds->fLowerLimit = ppds->fUpperLimit = 0.0;
  79         }
  80
  81         bRecreateGraph = bRecreateGrid = bRecreateAll = bStopped = false;
  82         m_onPaint = false;
  83         nDelayedPoints = 0;
  84         sLastTimestamp = 0.0;
  85         sLastPeriod = 1.0;
  86         nShiftPixels = 1;
  87         nYDecimals = nDecimals;
  88         m_bgColour  = wxColour(  0,   0,   0) ;  // see also SetBackgroundColor
  89         m_gridColour  = wxColour(  0, 255, 255) ;  // see also SetGridColor
  90         brushBack = *wxBLACK_BRUSH;
  91
  92         strXUnits = wxT("X");  // can also be set with SetXUnits
  93         strYUnits = wxT("Y");  // can also be set with SetYUnits
  94
  95         nXGrids = 6;
  96         nYGrids = 5;
  97
  98         graph_type = type;
  99
 100         // Connect the timer (dynamically, so the Controls don't have to share a common timer id)
 101         Connect(timerRedraw.GetId(), wxEVT_TIMER, (wxObjectEventFunction) &COScopeCtrl::OnTimer);
 102         // Don't draw background (avoid ugly flickering on wxMSW on resize)
 103         SetBackgroundStyle(wxBG_STYLE_CUSTOM);
 104
 105         // Ensure that various size-constraints are calculated (via OnSize).
 106         SetClientSize(GetClientSize());
 107 }
 108
 109
 110 COScopeCtrl::~COScopeCtrl()
 111 {
 112         delete [] pdsTrends;
 113 }
 114
 115
 116 void COScopeCtrl::SetRange(float fLower, float fUpper, unsigned iTrend)
 117 {
 118         PlotData_t* ppds = pdsTrends+iTrend;
 119         if ((ppds->fLowerLimit == fLower) && (ppds->fUpperLimit == fUpper))
 120                 return;
 121         ppds->fLowerLimit = fLower;
 122         ppds->fUpperLimit = fUpper;
 123         ppds->fVertScale = (float)m_rectPlot.GetHeight() / (fUpper-fLower);
 124         ppds->yPrev = GetPlotY(ppds->fPrev, ppds);
 125
 126         if (iTrend == 0) {
 127                 InvalidateCtrl();
 128         } else {
 129                 InvalidateGraph();
 130         }
 131 }
 132
 133
 134 void COScopeCtrl::SetRanges(float fLower, float fUpper)
 135 {
 136         for (unsigned iTrend = 0; iTrend < nTrends; ++iTrend) {
 137                 SetRange(fLower, fUpper, iTrend);
 138         }
 139 }
 140
 141
 142 void COScopeCtrl::SetYUnits(const wxString& strUnits, const wxString& strMin, const wxString& strMax)
 143 {
 144         strYUnits = strUnits;
 145         strYMin = strMin;
 146         strYMax = strMax;
 147         InvalidateGrid();
 148 }
 149
 150
 151 void COScopeCtrl::SetGridColor(const wxColour& cr)
 152 {
 153
 154         if (cr == m_gridColour) {
 155                 return;
 156         }
 157
 158         m_gridColour = cr;
 159         InvalidateGrid() ;
 160 }
 161
 162
 163 void COScopeCtrl::SetPlotColor(const wxColour& cr, unsigned iTrend)
 164 {
 165         PlotData_t* ppds = pdsTrends+iTrend;
 166         if (ppds->crPlot == cr)
 167                 return;
 168         ppds->crPlot = cr;
 169         ppds->penPlot=*(wxThePenList->FindOrCreatePen(ppds->crPlot, 1, wxSOLID));
 170         InvalidateGraph();
 171 }
 172
 173
 174 void COScopeCtrl::SetBackgroundColor(const wxColour& cr)
 175 {
 176
 177         if (m_bgColour == cr) {
 178                 return;
 179         }
 180
 181         m_bgColour = cr;
 182         brushBack= *(wxTheBrushList->FindOrCreateBrush(cr, wxSOLID));
 183         InvalidateCtrl() ;
 184 }
 185
 186
 187 void COScopeCtrl::RecreateGrid()
 188 {
 189         // There is a lot of drawing going on here - particularly in terms of
 190         // drawing the grid.  Don't panic, this is all being drawn (only once)
 191         // to a bitmap.  The result is then BitBlt'd to the control whenever needed.
 192         bRecreateGrid = false;
 193         if (m_rectClient.GetWidth() == 0 || m_rectClient.GetHeight() == 0) {
 194                 return;
 195         }
 196
 197         wxMemoryDC dcGrid(m_bmapGrid);
 198
 199         wxPen solidPen = *(wxThePenList->FindOrCreatePen(m_gridColour, 1, wxSOLID));
 200         wxString strTemp;
 201
 202         // fill the grid background
 203         dcGrid.SetBrush(brushBack);
 204         dcGrid.SetPen(*wxTRANSPARENT_PEN);
 205         dcGrid.DrawRectangle(m_rectClient);
 206
 207         // adjust the plot rectangle dimensions
 208         // assume 6 pixels per character (this may need to be adjusted)
 209         m_rectPlot.x    = m_rectClient.GetLeft() + 6*7+4;
 210         // draw the plot rectangle
 211         dcGrid.SetPen(solidPen);
 212         dcGrid.DrawRectangle(m_rectPlot.x - 1, m_rectPlot.y - 1, m_rectPlot.GetWidth() + 2, m_rectPlot.GetHeight() + 2);
 213         dcGrid.SetPen(wxNullPen);
 214
 215         // create some fonts (horizontal and vertical)
 216         wxFont axisFont(10, wxSWISS, wxNORMAL, wxNORMAL, false);
 217         dcGrid.SetFont(axisFont);
 218
 219         // y max
 220         dcGrid.SetTextForeground(m_gridColour);
 221         if( strYMax.IsEmpty() ) {
 222                 strTemp = wxString::Format(wxT("%.*f"), nYDecimals, pdsTrends[ 0 ].fUpperLimit);
 223         } else {
 224                 strTemp = strYMax;
 225         }
 226         wxCoord sizX,sizY;
 227         dcGrid.GetTextExtent(strTemp,&sizX,&sizY);
 228         dcGrid.DrawText(strTemp,m_rectPlot.GetLeft()-4-sizX,m_rectPlot.GetTop()-7);
 229         // y min
 230         if( strYMin.IsEmpty() ) {
 231                 strTemp = wxString::Format(wxT("%.*f"), nYDecimals, pdsTrends[ 0 ].fLowerLimit) ;
 232         } else {
 233                 strTemp = strYMin;
 234         }
 235         dcGrid.GetTextExtent(strTemp,&sizX,&sizY);
 236         dcGrid.DrawText(strTemp,m_rectPlot.GetLeft()-4-sizX, m_rectPlot.GetBottom());
 237
 238         // x units
 239         strTemp = CastSecondsToHM((m_rectPlot.GetWidth()/nShiftPixels) * (int)floor(sLastPeriod+0.5));
 240                 // floor(x + 0.5) is a way of doing round(x) that works with gcc < 3 ...
 241         if (bStopped) {
 242                 strXUnits = CFormat( _("Disabled [%s]") ) % strTemp;
 243         } else {
 244                 strXUnits = strTemp;
 245         }
 246
 247         dcGrid.GetTextExtent(strXUnits,&sizX,&sizY);
 248         dcGrid.DrawText(strXUnits,(m_rectPlot.GetLeft() + m_rectPlot.GetRight())/2-sizX/2,m_rectPlot.GetBottom()+4);
 249
 250         // y units
 251         if (!strYUnits.IsEmpty()) {
 252                 dcGrid.GetTextExtent(strYUnits,&sizX,&sizY);
 253                 dcGrid.DrawText(strYUnits, m_rectPlot.GetLeft()-4-sizX, (m_rectPlot.GetTop()+m_rectPlot.GetBottom())/2-sizY/2);
 254         }
 255         // no more drawing to this bitmap is needed until the setting are changed
 256
 257         if (bRecreateGraph) {
 258                 RecreateGraph(false);
 259         }
 260
 261         // finally, force the plot area to redraw
 262         Refresh(false);
 263 }
 264
 265
 266 void COScopeCtrl::AppendPoints(double sTimestamp, const std::vector<float *> &apf)
 267 {
 268         sLastTimestamp = sTimestamp;
 269
 270         if (nDelayedPoints) {
 271                 // Ensures that delayed points get added before the new point.
 272                 // We do this by simply drawing the history up to and including
 273                 // the new point.
 274                 int n = std::min(m_rectPlot.GetWidth(), nDelayedPoints + 1);
 275                 nDelayedPoints = 0;
 276                 PlotHistory(n, true, false);
 277         } else {
 278                 ShiftGraph(1);
 279                 DrawPoints(apf, 1);
 280         }
 281
 282         Refresh(false);
 283 }
 284
 285
 286 void COScopeCtrl::OnPaint(wxPaintEvent& WXUNUSED(evt))
 287 {
 288         m_onPaint = true;
 289
 290         // no real plotting work is performed here unless we are coming out of a hidden state;
 291         // normally, just putting the existing bitmaps on the client to avoid flicker,
 292         // establish a memory dc and then BitBlt it to the client
 293         wxBufferedPaintDC dc(this);
 294
 295         if (bRecreateAll) {
 296                 return;
 297         }
 298
 299         if (bRecreateGrid) {
 300                 RecreateGrid();  // this will also recreate the graph if that flag is set
 301         } else if (bRecreateGraph) {
 302                 RecreateGraph(true);
 303         }
 304
 305         if (nDelayedPoints) {                           // we've just come out of hiding, so catch up
 306                 int n = std::min(m_rectPlot.GetWidth(), nDelayedPoints);
 307                 nDelayedPoints = 0;                             // (this is more efficient than plotting in the
 308                 PlotHistory(n, true, false);    // background because the bitmap is shifted only
 309         }                                                                       // once for all delayed points together)
 310
 311         // We have assured that we have a valid and resized if needed
 312         // wxDc and bitmap. Proceed to blit.
 313         dc.DrawBitmap(m_bmapGrid, 0, 0, false);
 314
 315         // Overwrites the plot section of the image
 316         dc.DrawBitmap(m_bmapPlot, m_rectPlot.x, m_rectPlot.y, false);
 317
 318         // draw the dotted lines.
 319         // This is done last because wxMAC does't support the wxOR logical
 320         // operation, preventing us from simply blitting the plot on top of
 321         // the grid bitmap.
 322
 323         dc.SetPen(*(wxThePenList->FindOrCreatePen(m_gridColour, 1, wxLONG_DASH)));
 324         for (unsigned j = 1; j < (nYGrids + 1); ++j) {
 325                 unsigned GridPos = (m_rectPlot.GetHeight())*j/( nYGrids + 1 ) + m_rectPlot.GetTop();
 326
 327                 dc.DrawLine(m_rectPlot.GetLeft(), GridPos, m_rectPlot.GetRight(), GridPos);
 328         }
 329 }
 330
 331
 332 void COScopeCtrl::OnSize(wxSizeEvent& WXUNUSED(evt))
 333 {
 334         // This gets called repeatedly as the user resizes the app;
 335         // we use the timer mechanism through InvalidateCtrl to avoid unnecessary redrawing
 336         // NOTE: OnSize automatically gets called during the setup of the control
 337         if(GetClientRect() == m_rectClient) {
 338                 return;
 339         }
 340
 341         m_rectClient = GetClientRect();
 342         if (m_rectClient.GetWidth() < 1 || m_rectClient.GetHeight() < 1) {
 343                 return;
 344         }
 345
 346         // the "left" coordinate and "width" will be modified in
 347         // InvalidateCtrl to be based on the y axis scaling
 348         m_rectPlot.SetLeft(20);
 349         m_rectPlot.SetTop(10);
 350         m_rectPlot.SetRight(std::max<int>(m_rectPlot.GetLeft() + 1, m_rectClient.GetRight() - 40));
 351         m_rectPlot.SetBottom(std::max<int>(m_rectPlot.GetTop() + 1, m_rectClient.GetBottom() - 25));
 352
 353         PlotData_t* ppds = pdsTrends;
 354         for(unsigned iTrend=0; iTrend<nTrends; ++iTrend, ++ppds) {
 355                 ppds->fVertScale = (float)m_rectPlot.GetHeight() / (ppds->fUpperLimit-ppds->fLowerLimit);
 356                 ppds->yPrev = GetPlotY(ppds->fPrev, ppds);
 357         }
 358
 359         if (!m_bmapGrid.IsOk() || (m_rectClient != wxSize(m_bmapGrid.GetWidth(), m_bmapGrid.GetHeight()))) {
 360                 m_bmapGrid.Create(m_rectClient.GetWidth(), m_rectClient.GetHeight());
 361         }
 362         if (!m_bmapPlot.IsOk() || (m_rectPlot != wxSize(m_bmapPlot.GetWidth(), m_bmapPlot.GetHeight()))) {
 363                 m_bmapPlot.Create(m_rectPlot.GetWidth(), m_rectPlot.GetHeight());
 364         }
 365
 366         InvalidateCtrl();
 367 }
 368
 369
 370 void COScopeCtrl::ShiftGraph(unsigned cntPoints)
 371 {
 372         wxMemoryDC dcPlot(m_bmapPlot);
 373
 374         unsigned cntPixelOffset = cntPoints*nShiftPixels;
 375         if (cntPixelOffset >= (unsigned)m_rectPlot.GetWidth()) {
 376                 cntPixelOffset = m_rectPlot.GetWidth();
 377         } else {
 378                 dcPlot.Blit(0, 0, m_rectPlot.GetWidth(), m_rectPlot.GetHeight(), &dcPlot,
 379                         cntPixelOffset, 0);     // scroll graph to the left
 380         }
 381
 382         // clear a rectangle over the right side of plot prior to adding the new points
 383         dcPlot.SetPen(*wxTRANSPARENT_PEN);
 384         dcPlot.SetBrush(brushBack);     // fill with background color
 385         dcPlot.DrawRectangle(m_rectPlot.GetWidth()-cntPixelOffset, 0,
 386                 cntPixelOffset, m_rectPlot.GetHeight());
 387 }
 388
 389
 390 unsigned COScopeCtrl::GetPlotY(float fPlot, PlotData_t* ppds)
 391 {
 392         if (fPlot <= ppds->fLowerLimit) {
 393                 return m_rectPlot.GetBottom();
 394         } else if (fPlot >= ppds->fUpperLimit) {
 395                 return m_rectPlot.GetTop() + 1;
 396         } else {
 397                 return m_rectPlot.GetBottom() - (unsigned)((fPlot - ppds->fLowerLimit) * ppds->fVertScale);
 398         }
 399 }
 400
 401
 402 void COScopeCtrl::DrawPoints(const std::vector<float *> &apf, unsigned cntPoints)
 403 {
 404         // this appends a new set of data points to a graph; all of the plotting is
 405         // directed to the memory based bitmap associated with dcPlot
 406         // the will subsequently be BitBlt'd to the client in OnPaint
 407         // draw the next line segement
 408         unsigned y, yPrev;
 409         unsigned cntPixelOffset = std::min((unsigned)(m_rectPlot.GetWidth()-1), (cntPoints-1)*nShiftPixels);
 410         PlotData_t* ppds = pdsTrends;
 411
 412         wxMemoryDC dcPlot(m_bmapPlot);
 413
 414         for (unsigned iTrend=0; iTrend<nTrends; ++iTrend, ++ppds) {
 415                 const float* pf = apf[iTrend] + cntPoints - 1;
 416                 yPrev = ppds->yPrev;
 417                 dcPlot.SetPen(ppds->penPlot);
 418
 419                 for (int x = m_rectPlot.GetRight() - cntPixelOffset; x <= m_rectPlot.GetRight(); x+=nShiftPixels) {
 420                         y = GetPlotY(*pf--, ppds);
 421
 422                         // Map onto the smaller bitmap
 423                         dcPlot.DrawLine(x - nShiftPixels - m_rectPlot.GetX(),
 424                                         yPrev - m_rectPlot.GetY(),
 425                                         x - m_rectPlot.GetX(),
 426                                         y - m_rectPlot.GetY());
 427
 428                         yPrev = y;
 429                 }
 430                 ppds->fPrev = *(pf+1);
 431                 ppds->yPrev = yPrev;
 432         }
 433 }
 434
 435
 436 #ifndef CLIENT_GUI
 437 void COScopeCtrl::PlotHistory(unsigned cntPoints, bool bShiftGraph, bool bRefresh)
 438 {
 439         wxASSERT(graph_type != GRAPH_INVALID);
 440
 441         if (graph_type != GRAPH_INVALID) {
 442                 unsigned i;
 443                 unsigned cntFilled;
 444                 std::vector<float *> apf(nTrends);
 445                 try {
 446                         for (i = 0; i < nTrends; ++i) {
 447                                 apf[i] = new float[cntPoints];
 448                         }
 449                         double sFinal = (bStopped ? sLastTimestamp : -1.0);
 450                         cntFilled = theApp->m_statistics->GetHistory(cntPoints, sLastPeriod, sFinal, apf, graph_type);
 451                         if (cntFilled >1  ||  (bShiftGraph && cntFilled!=0)) {
 452                                 if (bShiftGraph) {  // delayed points - we have an fPrev
 453                                         ShiftGraph(cntFilled);
 454                                 } else {  // fresh graph, we need to preset fPrev, yPrev
 455                                         PlotData_t* ppds = pdsTrends;
 456                                         for(i=0; i<nTrends; ++i, ++ppds)
 457                                                 ppds->yPrev = GetPlotY(ppds->fPrev = *(apf[i] + cntFilled - 1), ppds);
 458                                         cntFilled--;
 459                                 }
 460                                 DrawPoints(apf, cntFilled);
 461                                 if (bRefresh)
 462                                         Refresh(false);
 463                         }
 464                         for (i = 0; i < nTrends; ++i) {
 465                                 delete [] apf[i];
 466                         }
 467                 } catch(std::bad_alloc) {
 468                         // Failed memory allocation
 469                         AddLogLineC(wxString(
 470                                 wxT("Error: COScopeCtrl::PlotHistory: Insuficient memory, cntPoints == ")) <<
 471                                 cntPoints << wxT("."));
 472                         for (i = 0; i < nTrends; ++i) {
 473                                 delete [] apf[i];
 474                         }
 475                 }
 476         } else {
 477                 // No history (yet) for Kad.
 478         }
 479 }
 480 #else
 481 //#warning CORE/GUI -- EC needed
 482 void COScopeCtrl::PlotHistory(unsigned, bool, bool)
 483 {
 484 }
 485 #endif
 486
 487
 488 void COScopeCtrl::RecreateGraph(bool bRefresh)
 489 {
 490         bRecreateGraph = false;
 491         nDelayedPoints = 0;
 492
 493         wxMemoryDC dcPlot(m_bmapPlot);
 494         dcPlot.SetBackground(brushBack);
 495         dcPlot.Clear();
 496
 497         PlotHistory(m_rectPlot.GetWidth(), false, bRefresh);
 498 }
 499
 500
 501 void COScopeCtrl::Reset(double sNewPeriod)
 502 {
 503         bool bStoppedPrev = bStopped;
 504         bStopped = false;
 505         if (sLastPeriod != sNewPeriod  ||  bStoppedPrev) {
 506                 sLastPeriod = sNewPeriod;
 507                 InvalidateCtrl();
 508         }
 509 }
 510
 511
 512 void COScopeCtrl::Stop()
 513 {
 514         bStopped = true;
 515         bRecreateGraph = false;
 516         RecreateGrid();
 517 }
 518
 519
 520 void COScopeCtrl::InvalidateCtrl(bool bInvalidateGraph, bool bInvalidateGrid)
 521 {
 522         bRecreateGraph |= bInvalidateGraph;
 523         bRecreateGrid |= bInvalidateGrid;
 524         // It appears the timerRedraw logic screws up Mac, disable it there
 525 #ifndef __WXMAC__
 526         // To prevent startup problems don't start timer logic until
 527         // a native OnPaint event has been generated.
 528         if (m_onPaint) {
 529                 bRecreateAll  |= bInvalidateGraph && bInvalidateGrid;
 530                 timerRedraw.Start(100, true);   // One-shot timer
 531         }
 532 #endif
 533 }
 534
 535
 536 void COScopeCtrl::OnTimer(wxTimerEvent& WXUNUSED(evt))
 537 /*      The timer is used to consolidate redrawing of the graphs:  when the user resizes
 538         the application, we get multiple calls to OnSize.  If he changes several parameters
 539         in the Preferences, we get several individual SetXYZ calls.  If we were to try to
 540         recreate the graphs for each such event, performance would be sluggish, but with
 541         the timer, each event (if they come in quick succession) simply restarts the timer
 542         until there is a little pause and OnTimer actually gets called and does its work.
 543 */
 544 {
 545         if( !theApp->amuledlg || !theApp->amuledlg->SafeState()) {
 546                 return;
 547         }
 548         bRecreateAll = false;
 549         Refresh();
 550 }
 551
 552 // File_checked_for_headers