programs/taskmgr/graphctl.c

   1 /*
   2  *  ReactOS Task Manager
   3  *
   4  *  graphctl.c
   5  *
   6  *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #define WIN32_LEAN_AND_MEAN        /* Exclude rarely-used stuff from Windows headers */
  24 #include <windows.h>
  25 #include <commctrl.h>
  26 #include <stdlib.h>
  27 #include <malloc.h>
  28 #include <memory.h>
  29 #include <tchar.h>
  30 #include <stdio.h>
  31
  32 #include <math.h>
  33 #include "graphctl.h"
  34 #include "taskmgr.h"
  35
  36 WNDPROC OldGraphCtrlWndProc;
  37
  38 static void GraphCtrl_Init(TGraphCtrl* this)
  39 {
  40     int i;
  41
  42     this->m_hWnd = 0;
  43     this->m_hParentWnd = 0;
  44     this->m_dcGrid = 0;
  45     this->m_dcPlot = 0;
  46     this->m_bitmapOldGrid = 0;
  47     this->m_bitmapOldPlot = 0;
  48     this->m_bitmapGrid = 0;
  49     this->m_bitmapPlot = 0;
  50     this->m_brushBack = 0;
  51
  52     this->m_penPlot[0] = 0;
  53     this->m_penPlot[1] = 0;
  54     this->m_penPlot[2] = 0;
  55     this->m_penPlot[3] = 0;
  56
  57     /* since plotting is based on a LineTo for each new point
  58      * we need a starting point (i.e. a "previous" point)
  59      * use 0.0 as the default first point.
  60      * these are public member variables, and can be changed outside
  61      * (after construction).  Therefore m_perviousPosition could be set to
  62      * a more appropriate value prior to the first call to SetPosition.
  63      */
  64     this->m_dPreviousPosition[0] = 0.0;
  65     this->m_dPreviousPosition[1] = 0.0;
  66     this->m_dPreviousPosition[2] = 0.0;
  67     this->m_dPreviousPosition[3] = 0.0;
  68
  69     /*  public variable for the number of decimal places on the y axis */
  70     this->m_nYDecimals = 3;
  71
  72     /*  set some initial values for the scaling until "SetRange" is called.
  73      *  these are protected varaibles and must be set with SetRange
  74      *  in order to ensure that m_dRange is updated accordingly
  75      */
  76     /*   m_dLowerLimit = -10.0; */
  77     /*   m_dUpperLimit =  10.0; */
  78     this->m_dLowerLimit = 0.0;
  79     this->m_dUpperLimit = 100.0;
  80     this->m_dRange      =  this->m_dUpperLimit - this->m_dLowerLimit;   /*  protected member variable */
  81
  82     /*  m_nShiftPixels determines how much the plot shifts (in terms of pixels)  */
  83     /*  with the addition of a new data point */
  84     this->m_nShiftPixels     = 4;
  85     this->m_nHalfShiftPixels = this->m_nShiftPixels/2;                     /*  protected */
  86     this->m_nPlotShiftPixels = this->m_nShiftPixels + this->m_nHalfShiftPixels;  /*  protected */
  87
  88     /*  background, grid and data colors */
  89     /*  these are public variables and can be set directly */
  90     this->m_crBackColor = RGB(  0,   0,   0);  /*  see also SetBackgroundColor */
  91     this->m_crGridColor = RGB(  0, 255, 255);  /*  see also SetGridColor */
  92     this->m_crPlotColor[0] = RGB(255, 255, 255);  /*  see also SetPlotColor */
  93     this->m_crPlotColor[1] = RGB(100, 255, 255);  /*  see also SetPlotColor */
  94     this->m_crPlotColor[2] = RGB(255, 100, 255);  /*  see also SetPlotColor */
  95     this->m_crPlotColor[3] = RGB(255, 255, 100);  /*  see also SetPlotColor */
  96
  97     /*  protected variables */
  98     for (i = 0; i < MAX_PLOTS; i++)
  99     {
 100         this->m_penPlot[i] = CreatePen(PS_SOLID, 0, this->m_crPlotColor[i]);
 101     }
 102     this->m_brushBack = CreateSolidBrush(this->m_crBackColor);
 103
 104     /*  public member variables, can be set directly  */
 105     strcpy(this->m_strXUnitsString, "Samples");  /*  can also be set with SetXUnits */
 106     strcpy(this->m_strYUnitsString, "Y units");  /*  can also be set with SetYUnits */
 107
 108     /*  protected bitmaps to restore the memory DC's */
 109     this->m_bitmapOldGrid = NULL;
 110     this->m_bitmapOldPlot = NULL;
 111 }
 112
 113 #if 0
 114 TGraphCtrl::~TGraphCtrl()
 115 {
 116     /*  just to be picky restore the bitmaps for the two memory dc's */
 117     /*  (these dc's are being destroyed so there shouldn't be any leaks) */
 118     if (m_bitmapOldGrid != NULL) SelectObject(m_dcGrid, m_bitmapOldGrid);
 119     if (m_bitmapOldPlot != NULL) SelectObject(m_dcPlot, m_bitmapOldPlot);
 120     if (m_bitmapGrid    != NULL) DeleteObject(m_bitmapGrid);
 121     if (m_bitmapPlot    != NULL) DeleteObject(m_bitmapPlot);
 122     if (m_dcGrid        != NULL) DeleteDC(m_dcGrid);
 123     if (m_dcPlot        != NULL) DeleteDC(m_dcPlot);
 124     if (m_brushBack     != NULL) DeleteObject(m_brushBack);
 125 }
 126 #endif
 127
 128 BOOL GraphCtrl_Create(TGraphCtrl* this, HWND hWnd, HWND hParentWnd, UINT nID)
 129 {
 130     BOOL result = 0;
 131
 132     GraphCtrl_Init(this);
 133     this->m_hParentWnd = hParentWnd;
 134     this->m_hWnd = hWnd;
 135     GraphCtrl_Resize(this);
 136     if (result != 0)
 137         GraphCtrl_InvalidateCtrl(this);
 138     return result;
 139 }
 140
 141 void GraphCtrl_SetRange(TGraphCtrl* this, double dLower, double dUpper, int nDecimalPlaces)
 142 {
 143     /* ASSERT(dUpper > dLower); */
 144     this->m_dLowerLimit     = dLower;
 145     this->m_dUpperLimit     = dUpper;
 146     this->m_nYDecimals      = nDecimalPlaces;
 147     this->m_dRange          = this->m_dUpperLimit - this->m_dLowerLimit;
 148     this->m_dVerticalFactor = (double)this->m_nPlotHeight / this->m_dRange;
 149     /*  clear out the existing garbage, re-start with a clean plot */
 150     GraphCtrl_InvalidateCtrl(this);
 151 }
 152
 153 #if 0
 154 void TGraphCtrl::SetXUnits(const char* string)
 155 {
 156     lstrcpynA(m_strXUnitsString, string, sizeof(m_strXUnitsString));
 157     /*  clear out the existing garbage, re-start with a clean plot */
 158     InvalidateCtrl();
 159 }
 160
 161 void TGraphCtrl::SetYUnits(const char* string)
 162 {
 163     lstrcpynA(m_strYUnitsString, string, sizeof(m_strYUnitsString));
 164     /*  clear out the existing garbage, re-start with a clean plot */
 165     InvalidateCtrl();
 166 }
 167 #endif
 168
 169 void GraphCtrl_SetGridColor(TGraphCtrl* this, COLORREF color)
 170 {
 171     this->m_crGridColor = color;
 172     /*  clear out the existing garbage, re-start with a clean plot */
 173     GraphCtrl_InvalidateCtrl(this);
 174 }
 175
 176 void GraphCtrl_SetPlotColor(TGraphCtrl* this, int plot, COLORREF color)
 177 {
 178     this->m_crPlotColor[plot] = color;
 179     DeleteObject(this->m_penPlot[plot]);
 180     this->m_penPlot[plot] = CreatePen(PS_SOLID, 0, this->m_crPlotColor[plot]);
 181     /*  clear out the existing garbage, re-start with a clean plot */
 182     GraphCtrl_InvalidateCtrl(this);
 183 }
 184
 185 void GraphCtrl_SetBackgroundColor(TGraphCtrl* this, COLORREF color)
 186 {
 187     this->m_crBackColor = color;
 188     DeleteObject(this->m_brushBack);
 189     this->m_brushBack = CreateSolidBrush(this->m_crBackColor);
 190     /*  clear out the existing garbage, re-start with a clean plot */
 191     GraphCtrl_InvalidateCtrl(this);
 192 }
 193
 194 void GraphCtrl_InvalidateCtrl(TGraphCtrl* this)
 195 {
 196     /*  There is a lot of drawing going on here - particularly in terms of  */
 197     /*  drawing the grid.  Don't panic, this is all being drawn (only once) */
 198     /*  to a bitmap.  The result is then BitBlt'd to the control whenever needed. */
 199     int i, j;
 200     int nCharacters;
 201     int nTopGridPix, nMidGridPix, nBottomGridPix;
 202
 203     HPEN oldPen;
 204     HPEN solidPen = CreatePen(PS_SOLID, 0, this->m_crGridColor);
 205     /* HFONT axisFont, yUnitFont, oldFont; */
 206     /* char strTemp[50]; */
 207
 208     /*  in case we haven't established the memory dc's */
 209     /* CClientDC dc(this); */
 210     HDC dc = GetDC(this->m_hParentWnd);
 211
 212     /*  if we don't have one yet, set up a memory dc for the grid */
 213     if (this->m_dcGrid == NULL)
 214     {
 215         this->m_dcGrid = CreateCompatibleDC(dc);
 216         this->m_bitmapGrid = CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
 217         this->m_bitmapOldGrid = (HBITMAP)SelectObject(this->m_dcGrid, this->m_bitmapGrid);
 218     }
 219
 220     SetBkColor(this->m_dcGrid, this->m_crBackColor);
 221
 222     /*  fill the grid background */
 223     FillRect(this->m_dcGrid, &this->m_rectClient, this->m_brushBack);
 224
 225     /*  draw the plot rectangle: */
 226     /*  determine how wide the y axis scaling values are */
 227     nCharacters = abs((int)log10(fabs(this->m_dUpperLimit)));
 228     nCharacters = max(nCharacters, abs((int)log10(fabs(this->m_dLowerLimit))));
 229
 230     /*  add the units digit, decimal point and a minus sign, and an extra space */
 231     /*  as well as the number of decimal places to display */
 232     nCharacters = nCharacters + 4 + this->m_nYDecimals;
 233
 234     /*  adjust the plot rectangle dimensions */
 235     /*  assume 6 pixels per character (this may need to be adjusted) */
 236     /*   m_rectPlot.left = m_rectClient.left + 6*(nCharacters); */
 237     this->m_rectPlot.left = this->m_rectClient.left;
 238     this->m_nPlotWidth    = this->m_rectPlot.right - this->m_rectPlot.left;/* m_rectPlot.Width(); */
 239
 240     /*  draw the plot rectangle */
 241     oldPen = (HPEN)SelectObject(this->m_dcGrid, solidPen);
 242     MoveToEx(this->m_dcGrid, this->m_rectPlot.left, this->m_rectPlot.top, NULL);
 243     LineTo(this->m_dcGrid, this->m_rectPlot.right+1, this->m_rectPlot.top);
 244     LineTo(this->m_dcGrid, this->m_rectPlot.right+1, this->m_rectPlot.bottom+1);
 245     LineTo(this->m_dcGrid, this->m_rectPlot.left, this->m_rectPlot.bottom+1);
 246     /*   LineTo(m_dcGrid, m_rectPlot.left, m_rectPlot.top); */
 247     SelectObject(this->m_dcGrid, oldPen);
 248     DeleteObject(solidPen);
 249
 250     /*  draw the dotted lines,
 251      *  use SetPixel instead of a dotted pen - this allows for a
 252      *  finer dotted line and a more "technical" look
 253      */
 254     nMidGridPix    = (this->m_rectPlot.top + this->m_rectPlot.bottom)/2;
 255     nTopGridPix    = nMidGridPix - this->m_nPlotHeight/4;
 256     nBottomGridPix = nMidGridPix + this->m_nPlotHeight/4;
 257
 258     for (i=this->m_rectPlot.left; i<this->m_rectPlot.right; i+=2)
 259     {
 260         SetPixel(this->m_dcGrid, i, nTopGridPix,    this->m_crGridColor);
 261         SetPixel(this->m_dcGrid, i, nMidGridPix,    this->m_crGridColor);
 262         SetPixel(this->m_dcGrid, i, nBottomGridPix, this->m_crGridColor);
 263     }
 264
 265     for (i=this->m_rectPlot.left; i<this->m_rectPlot.right; i+=10)
 266     {
 267         for (j=this->m_rectPlot.top; j<this->m_rectPlot.bottom; j+=2)
 268         {
 269             SetPixel(this->m_dcGrid, i, j, this->m_crGridColor);
 270             /*       SetPixel(m_dcGrid, i, j, m_crGridColor); */
 271             /*       SetPixel(m_dcGrid, i, j, m_crGridColor); */
 272         }
 273     }
 274
 275 #if 0
 276     /*  create some fonts (horizontal and vertical) */
 277     /*  use a height of 14 pixels and 300 weight  */
 278     /*  (these may need to be adjusted depending on the display) */
 279     axisFont = CreateFont (14, 0, 0, 0, 300,
 280                            FALSE, FALSE, 0, ANSI_CHARSET,
 281                            OUT_DEFAULT_PRECIS,
 282                            CLIP_DEFAULT_PRECIS,
 283                            DEFAULT_QUALITY,
 284                            DEFAULT_PITCH|FF_SWISS, "Arial");
 285     yUnitFont = CreateFont (14, 0, 900, 0, 300,
 286                             FALSE, FALSE, 0, ANSI_CHARSET,
 287                             OUT_DEFAULT_PRECIS,
 288                             CLIP_DEFAULT_PRECIS,
 289                             DEFAULT_QUALITY,
 290                             DEFAULT_PITCH|FF_SWISS, "Arial");
 291
 292     /*  grab the horizontal font */
 293     oldFont = (HFONT)SelectObject(m_dcGrid, axisFont);
 294
 295     /*  y max */
 296     SetTextColor(m_dcGrid, m_crGridColor);
 297     SetTextAlign(m_dcGrid, TA_RIGHT|TA_TOP);
 298     sprintf(strTemp, "%.*lf", m_nYDecimals, m_dUpperLimit);
 299     TextOut(m_dcGrid, m_rectPlot.left-4, m_rectPlot.top, strTemp, _tcslen(strTemp));
 300
 301     /*  y min */
 302     SetTextAlign(m_dcGrid, TA_RIGHT|TA_BASELINE);
 303     sprintf(strTemp, "%.*lf", m_nYDecimals, m_dLowerLimit);
 304     TextOut(m_dcGrid, m_rectPlot.left-4, m_rectPlot.bottom, strTemp, _tcslen(strTemp));
 305
 306     /*  x min */
 307     SetTextAlign(m_dcGrid, TA_LEFT|TA_TOP);
 308     TextOut(m_dcGrid, m_rectPlot.left, m_rectPlot.bottom+4, "0", 1);
 309
 310     /*  x max */
 311     SetTextAlign(m_dcGrid, TA_RIGHT|TA_TOP);
 312     sprintf(strTemp, "%d", m_nPlotWidth/m_nShiftPixels);
 313     TextOut(m_dcGrid, m_rectPlot.right, m_rectPlot.bottom+4, strTemp, _tcslen(strTemp));
 314
 315     /*  x units */
 316     SetTextAlign(m_dcGrid, TA_CENTER|TA_TOP);
 317     TextOut(m_dcGrid, (m_rectPlot.left+m_rectPlot.right)/2,
 318             m_rectPlot.bottom+4, m_strXUnitsString, _tcslen(m_strXUnitsString));
 319
 320     /*  restore the font */
 321     SelectObject(m_dcGrid, oldFont);
 322
 323     /*  y units */
 324     oldFont = (HFONT)SelectObject(m_dcGrid, yUnitFont);
 325     SetTextAlign(m_dcGrid, TA_CENTER|TA_BASELINE);
 326     TextOut(m_dcGrid, (m_rectClient.left+m_rectPlot.left)/2,
 327             (m_rectPlot.bottom+m_rectPlot.top)/2, m_strYUnitsString, _tcslen(m_strYUnitsString));
 328     SelectObject(m_dcGrid, oldFont);
 329 #endif
 330     /*  at this point we are done filling the the grid bitmap,  */
 331     /*  no more drawing to this bitmap is needed until the setting are changed */
 332
 333     /*  if we don't have one yet, set up a memory dc for the plot */
 334     if (this->m_dcPlot == NULL)
 335     {
 336         this->m_dcPlot = CreateCompatibleDC(dc);
 337         this->m_bitmapPlot = CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
 338         this->m_bitmapOldPlot = (HBITMAP)SelectObject(this->m_dcPlot, this->m_bitmapPlot);
 339     }
 340
 341     /*  make sure the plot bitmap is cleared */
 342     SetBkColor(this->m_dcPlot, this->m_crBackColor);
 343     FillRect(this->m_dcPlot, &this->m_rectClient, this->m_brushBack);
 344
 345     /*  finally, force the plot area to redraw */
 346     InvalidateRect(this->m_hParentWnd, &this->m_rectClient, TRUE);
 347     ReleaseDC(this->m_hParentWnd, dc);
 348 }
 349
 350 double GraphCtrl_AppendPoint(TGraphCtrl* this,
 351                              double dNewPoint0, double dNewPoint1,
 352                              double dNewPoint2, double dNewPoint3)
 353 {
 354     /*  append a data point to the plot & return the previous point */
 355     double dPrevious;
 356
 357     dPrevious = this->m_dCurrentPosition[0];
 358     this->m_dCurrentPosition[0] = dNewPoint0;
 359     this->m_dCurrentPosition[1] = dNewPoint1;
 360     this->m_dCurrentPosition[2] = dNewPoint2;
 361     this->m_dCurrentPosition[3] = dNewPoint3;
 362     GraphCtrl_DrawPoint(this);
 363     /* Invalidate(); */
 364     return dPrevious;
 365 }
 366
 367 void GraphCtrl_Paint(TGraphCtrl* this, HWND hWnd, HDC dc)
 368 {
 369     HDC memDC;
 370     HBITMAP memBitmap;
 371     HBITMAP oldBitmap; /*  bitmap originally found in CMemDC */
 372
 373 /*   RECT rcClient; */
 374 /*   GetClientRect(hWnd, &rcClient); */
 375 /*   FillSolidRect(dc, &rcClient, RGB(255, 0, 255)); */
 376 /*   m_nClientWidth = rcClient.right - rcClient.left; */
 377 /*   m_nClientHeight = rcClient.bottom - rcClient.top; */
 378
 379     /*  no real plotting work is performed here,  */
 380     /*  just putting the existing bitmaps on the client */
 381
 382     /*  to avoid flicker, establish a memory dc, draw to it */
 383     /*  and then BitBlt it to the client */
 384     memDC = CreateCompatibleDC(dc);
 385     memBitmap = (HBITMAP)CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
 386     oldBitmap = (HBITMAP)SelectObject(memDC, memBitmap);
 387
 388     if (memDC != NULL)
 389     {
 390         /*  first drop the grid on the memory dc */
 391         BitBlt(memDC, 0, 0, this->m_nClientWidth, this->m_nClientHeight, this->m_dcGrid, 0, 0, SRCCOPY);
 392         /*  now add the plot on top as a "pattern" via SRCPAINT. */
 393         /*  works well with dark background and a light plot */
 394         BitBlt(memDC, 0, 0, this->m_nClientWidth, this->m_nClientHeight, this->m_dcPlot, 0, 0, SRCPAINT);  /* SRCPAINT */
 395         /*  finally send the result to the display */
 396         BitBlt(dc, 0, 0, this->m_nClientWidth, this->m_nClientHeight, memDC, 0, 0, SRCCOPY);
 397     }
 398     SelectObject(memDC, oldBitmap);
 399     DeleteObject(memBitmap);
 400     DeleteDC(memDC);
 401 }
 402
 403 void GraphCtrl_DrawPoint(TGraphCtrl* this)
 404 {
 405     /*  this does the work of "scrolling" the plot to the left
 406      *  and appending a new data point all of the plotting is
 407      *  directed to the memory based bitmap associated with m_dcPlot
 408      *  the will subsequently be BitBlt'd to the client in Paint
 409      */
 410     int currX, prevX, currY, prevY;
 411     HPEN oldPen;
 412     RECT rectCleanUp;
 413     int i;
 414
 415     if (this->m_dcPlot != NULL)
 416     {
 417         /*  shift the plot by BitBlt'ing it to itself
 418          *  note: the m_dcPlot covers the entire client
 419          *        but we only shift bitmap that is the size
 420          *        of the plot rectangle
 421          *  grab the right side of the plot (exluding m_nShiftPixels on the left)
 422          *  move this grabbed bitmap to the left by m_nShiftPixels
 423          */
 424         BitBlt(this->m_dcPlot, this->m_rectPlot.left, this->m_rectPlot.top+1,
 425                this->m_nPlotWidth, this->m_nPlotHeight, this->m_dcPlot,
 426                this->m_rectPlot.left+this->m_nShiftPixels, this->m_rectPlot.top+1,
 427                SRCCOPY);
 428
 429         /*  establish a rectangle over the right side of plot */
 430         /*  which now needs to be cleaned up proir to adding the new point */
 431         rectCleanUp = this->m_rectPlot;
 432         rectCleanUp.left  = rectCleanUp.right - this->m_nShiftPixels;
 433
 434         /*  fill the cleanup area with the background */
 435         FillRect(this->m_dcPlot, &rectCleanUp, this->m_brushBack);
 436
 437         /*  draw the next line segement */
 438         for (i = 0; i < MAX_PLOTS; i++)
 439         {
 440             /*  grab the plotting pen */
 441             oldPen = (HPEN)SelectObject(this->m_dcPlot, this->m_penPlot[i]);
 442
 443             /*  move to the previous point */
 444             prevX = this->m_rectPlot.right-this->m_nPlotShiftPixels;
 445             prevY = this->m_rectPlot.bottom -
 446                 (long)((this->m_dPreviousPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
 447             MoveToEx(this->m_dcPlot, prevX, prevY, NULL);
 448
 449             /*  draw to the current point */
 450             currX = this->m_rectPlot.right-this->m_nHalfShiftPixels;
 451             currY = this->m_rectPlot.bottom -
 452                 (long)((this->m_dCurrentPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
 453             LineTo(this->m_dcPlot, currX, currY);
 454
 455             /*  Restore the pen  */
 456             SelectObject(this->m_dcPlot, oldPen);
 457
 458             /*  if the data leaks over the upper or lower plot boundaries
 459              *  fill the upper and lower leakage with the background
 460              *  this will facilitate clipping on an as needed basis
 461              *  as opposed to always calling IntersectClipRect
 462              */
 463             if ((prevY <= this->m_rectPlot.top) || (currY <= this->m_rectPlot.top))
 464             {
 465                 RECT rc;
 466                 rc.bottom = this->m_rectPlot.top+1;
 467                 rc.left = prevX;
 468                 rc.right = currX+1;
 469                 rc.top = this->m_rectClient.top;
 470                 FillRect(this->m_dcPlot, &rc, this->m_brushBack);
 471             }
 472             if ((prevY >= this->m_rectPlot.bottom) || (currY >= this->m_rectPlot.bottom))
 473             {
 474                 RECT rc;
 475                 rc.bottom = this->m_rectClient.bottom+1;
 476                 rc.left = prevX;
 477                 rc.right = currX+1;
 478                 rc.top = this->m_rectPlot.bottom+1;
 479                 /* RECT rc(prevX, m_rectPlot.bottom+1, currX+1, m_rectClient.bottom+1); */
 480                 FillRect(this->m_dcPlot, &rc, this->m_brushBack);
 481             }
 482
 483             /*  store the current point for connection to the next point */
 484             this->m_dPreviousPosition[i] = this->m_dCurrentPosition[i];
 485         }
 486     }
 487 }
 488
 489 void GraphCtrl_Resize(TGraphCtrl* this)
 490 {
 491     /*  NOTE: Resize automatically gets called during the setup of the control */
 492     GetClientRect(this->m_hWnd, &this->m_rectClient);
 493
 494     /*  set some member variables to avoid multiple function calls */
 495     this->m_nClientHeight = this->m_rectClient.bottom - this->m_rectClient.top;/* m_rectClient.Height(); */
 496     this->m_nClientWidth  = this->m_rectClient.right - this->m_rectClient.left;/* m_rectClient.Width(); */
 497
 498     /*  the "left" coordinate and "width" will be modified in  */
 499     /*  InvalidateCtrl to be based on the width of the y axis scaling */
 500 #if 0
 501     this->m_rectPlot.left   = 20;
 502     this->m_rectPlot.top    = 10;
 503     this->m_rectPlot.right  = this->m_rectClient.right-10;
 504     this->m_rectPlot.bottom = this->m_rectClient.bottom-25;
 505 #else
 506     this->m_rectPlot.left   = 0;
 507     this->m_rectPlot.top    = -1;
 508     this->m_rectPlot.right  = this->m_rectClient.right-0;
 509     this->m_rectPlot.bottom = this->m_rectClient.bottom-0;
 510 #endif
 511
 512     /*  set some member variables to avoid multiple function calls */
 513     this->m_nPlotHeight = this->m_rectPlot.bottom - this->m_rectPlot.top;/* m_rectPlot.Height(); */
 514     this->m_nPlotWidth  = this->m_rectPlot.right - this->m_rectPlot.left;/* m_rectPlot.Width(); */
 515
 516     /*  set the scaling factor for now, this can be adjusted  */
 517     /*  in the SetRange functions */
 518     this->m_dVerticalFactor = (double)this->m_nPlotHeight / this->m_dRange;
 519 }
 520
 521 #if 0
 522 void TGraphCtrl::Reset()
 523 {
 524     /*  to clear the existing data (in the form of a bitmap) */
 525     /*  simply invalidate the entire control */
 526     InvalidateCtrl();
 527 }
 528 #endif
 529
 530 extern TGraphCtrl PerformancePageCpuUsageHistoryGraph;
 531 extern TGraphCtrl PerformancePageMemUsageHistoryGraph;
 532 extern HWND hPerformancePageCpuUsageHistoryGraph;
 533 extern HWND hPerformancePageMemUsageHistoryGraph;
 534
 535 INT_PTR CALLBACK
 536 GraphCtrl_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 537 {
 538     RECT        rcClient;
 539     HDC            hdc;
 540     PAINTSTRUCT     ps;
 541
 542     switch (message)
 543     {
 544     case WM_ERASEBKGND:
 545         return TRUE;
 546     /*
 547      *  Filter out mouse  & keyboard messages
 548      */
 549     /* case WM_APPCOMMAND: */
 550     case WM_CAPTURECHANGED:
 551     case WM_LBUTTONDBLCLK:
 552     case WM_LBUTTONDOWN:
 553     case WM_LBUTTONUP:
 554     case WM_MBUTTONDBLCLK:
 555     case WM_MBUTTONDOWN:
 556     case WM_MBUTTONUP:
 557     case WM_MOUSEACTIVATE:
 558     case WM_MOUSEHOVER:
 559     case WM_MOUSELEAVE:
 560     case WM_MOUSEMOVE:
 561     /* case WM_MOUSEWHEEL: */
 562     case WM_NCHITTEST:
 563     case WM_NCLBUTTONDBLCLK:
 564     case WM_NCLBUTTONDOWN:
 565     case WM_NCLBUTTONUP:
 566     case WM_NCMBUTTONDBLCLK:
 567     case WM_NCMBUTTONDOWN:
 568     case WM_NCMBUTTONUP:
 569     /* case WM_NCMOUSEHOVER: */
 570     /* case WM_NCMOUSELEAVE: */
 571     case WM_NCMOUSEMOVE:
 572     case WM_NCRBUTTONDBLCLK:
 573     case WM_NCRBUTTONDOWN:
 574     case WM_NCRBUTTONUP:
 575     /* case WM_NCXBUTTONDBLCLK: */
 576     /* case WM_NCXBUTTONDOWN: */
 577     /* case WM_NCXBUTTONUP: */
 578     case WM_RBUTTONDBLCLK:
 579     case WM_RBUTTONDOWN:
 580     case WM_RBUTTONUP:
 581     /* case WM_XBUTTONDBLCLK: */
 582     /* case WM_XBUTTONDOWN: */
 583     /* case WM_XBUTTONUP: */
 584     case WM_ACTIVATE:
 585     case WM_CHAR:
 586     case WM_DEADCHAR:
 587     case WM_GETHOTKEY:
 588     case WM_HOTKEY:
 589     case WM_KEYDOWN:
 590     case WM_KEYUP:
 591     case WM_KILLFOCUS:
 592     case WM_SETFOCUS:
 593     case WM_SETHOTKEY:
 594     case WM_SYSCHAR:
 595     case WM_SYSDEADCHAR:
 596     case WM_SYSKEYDOWN:
 597     case WM_SYSKEYUP:
 598         return 0;
 599
 600     case WM_NCCALCSIZE:
 601         return 0;
 602
 603     case WM_SIZE:
 604         if (hWnd == hPerformancePageMemUsageHistoryGraph)
 605         {
 606             GraphCtrl_Resize(&PerformancePageMemUsageHistoryGraph);
 607             GraphCtrl_InvalidateCtrl(&PerformancePageMemUsageHistoryGraph);
 608         }
 609         if (hWnd == hPerformancePageCpuUsageHistoryGraph)
 610         {
 611             GraphCtrl_Resize(&PerformancePageCpuUsageHistoryGraph);
 612             GraphCtrl_InvalidateCtrl(&PerformancePageCpuUsageHistoryGraph);
 613         }
 614         return 0;
 615
 616     case WM_PAINT:
 617         hdc = BeginPaint(hWnd, &ps);
 618         GetClientRect(hWnd, &rcClient);
 619         if (hWnd == hPerformancePageMemUsageHistoryGraph)
 620             GraphCtrl_Paint(&PerformancePageMemUsageHistoryGraph, hWnd, hdc);
 621         if (hWnd == hPerformancePageCpuUsageHistoryGraph)
 622             GraphCtrl_Paint(&PerformancePageCpuUsageHistoryGraph, hWnd, hdc);
 623         EndPaint(hWnd, &ps);
 624         return 0;
 625     }
 626
 627     /*
 628      *  We pass on all non-handled messages
 629      */
 630     return CallWindowProc((WNDPROC)OldGraphCtrlWndProc, hWnd, message, wParam, lParam);
 631 }