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Sweden-Number/programs/taskmgr/graphctl.c

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/*
* ReactOS Task Manager
*
* graphctl.c
*
* Copyright (C) 2002 Robert Dickenson <robd@reactos.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <windows.h>
#include <commctrl.h>
#include "graphctl.h"
#include "taskmgr.h"
WNDPROC OldGraphCtrlWndProc;
static void GraphCtrl_Init(TGraphCtrl* this)
{
int i;
this->m_hWnd = 0;
this->m_hParentWnd = 0;
this->m_dcGrid = 0;
this->m_dcPlot = 0;
this->m_bitmapOldGrid = 0;
this->m_bitmapOldPlot = 0;
this->m_bitmapGrid = 0;
this->m_bitmapPlot = 0;
this->m_brushBack = 0;
this->m_penPlot[0] = 0;
this->m_penPlot[1] = 0;
this->m_penPlot[2] = 0;
this->m_penPlot[3] = 0;
/* since plotting is based on a LineTo for each new point
* we need a starting point (i.e. a "previous" point)
* use 0.0 as the default first point.
* these are public member variables, and can be changed outside
* (after construction). Therefore m_dPreviousPosition could be set to
* a more appropriate value prior to the first call to SetPosition.
*/
this->m_dPreviousPosition[0] = 0.0;
this->m_dPreviousPosition[1] = 0.0;
this->m_dPreviousPosition[2] = 0.0;
this->m_dPreviousPosition[3] = 0.0;
/* public variable for the number of decimal places on the y axis */
this->m_nYDecimals = 3;
/* set some initial values for the scaling until "SetRange" is called.
* these are protected variables and must be set with SetRange
* in order to ensure that m_dRange is updated accordingly
*/
/* m_dLowerLimit = -10.0; */
/* m_dUpperLimit = 10.0; */
this->m_dLowerLimit = 0.0;
this->m_dUpperLimit = 100.0;
this->m_dRange = this->m_dUpperLimit - this->m_dLowerLimit; /* protected member variable */
/* m_nShiftPixels determines how much the plot shifts (in terms of pixels) */
/* with the addition of a new data point */
this->m_nShiftPixels = 4;
this->m_nHalfShiftPixels = this->m_nShiftPixels/2; /* protected */
this->m_nPlotShiftPixels = this->m_nShiftPixels + this->m_nHalfShiftPixels; /* protected */
/* background, grid and data colors */
/* these are public variables and can be set directly */
this->m_crBackColor = RGB( 0, 0, 0); /* see also SetBackgroundColor */
this->m_crGridColor = RGB( 0, 255, 255); /* see also SetGridColor */
this->m_crPlotColor[0] = RGB(255, 255, 255); /* see also SetPlotColor */
this->m_crPlotColor[1] = RGB(100, 255, 255); /* see also SetPlotColor */
this->m_crPlotColor[2] = RGB(255, 100, 255); /* see also SetPlotColor */
this->m_crPlotColor[3] = RGB(255, 255, 100); /* see also SetPlotColor */
/* protected variables */
for (i = 0; i < MAX_PLOTS; i++)
{
this->m_penPlot[i] = CreatePen(PS_SOLID, 0, this->m_crPlotColor[i]);
}
this->m_brushBack = CreateSolidBrush(this->m_crBackColor);
/* public member variables, can be set directly */
strcpy(this->m_strXUnitsString, "Samples"); /* can also be set with SetXUnits */
strcpy(this->m_strYUnitsString, "Y units"); /* can also be set with SetYUnits */
/* protected bitmaps to restore the memory DC's */
this->m_bitmapOldGrid = NULL;
this->m_bitmapOldPlot = NULL;
}
static void GraphCtrl_Resize(TGraphCtrl* this)
{
/* NOTE: Resize automatically gets called during the setup of the control */
GetClientRect(this->m_hWnd, &this->m_rectClient);
/* set some member variables to avoid multiple function calls */
this->m_nClientHeight = this->m_rectClient.bottom - this->m_rectClient.top;/* m_rectClient.Height(); */
this->m_nClientWidth = this->m_rectClient.right - this->m_rectClient.left;/* m_rectClient.Width(); */
/* the "left" coordinate and "width" will be modified in */
/* InvalidateCtrl to be based on the width of the y axis scaling */
SetRect(&this->m_rectPlot, 0, -1, this->m_rectClient.right, this->m_rectClient.bottom);
/* set some member variables to avoid multiple function calls */
this->m_nPlotHeight = this->m_rectPlot.bottom - this->m_rectPlot.top;/* m_rectPlot.Height(); */
this->m_nPlotWidth = this->m_rectPlot.right - this->m_rectPlot.left;/* m_rectPlot.Width(); */
/* set the scaling factor for now, this can be adjusted */
/* in the SetRange functions */
this->m_dVerticalFactor = (double)this->m_nPlotHeight / this->m_dRange;
}
void GraphCtrl_Create(TGraphCtrl* this, HWND hWnd, HWND hParentWnd, UINT nID)
{
GraphCtrl_Init(this);
this->m_hParentWnd = hParentWnd;
this->m_hWnd = hWnd;
GraphCtrl_Resize(this);
}
static void GraphCtrl_InvalidateCtrl(TGraphCtrl* this)
{
/* There is a lot of drawing going on here - particularly in terms of */
/* drawing the grid. Don't panic, this is all being drawn (only once) */
/* to a bitmap. The result is then BitBlt'd to the control whenever needed. */
int i, j;
int nCharacters;
int nTopGridPix, nMidGridPix, nBottomGridPix;
HPEN oldPen;
HPEN solidPen = CreatePen(PS_SOLID, 0, this->m_crGridColor);
/* HFONT axisFont, yUnitFont, oldFont; */
/* char strTemp[50]; */
/* in case we haven't established the memory dc's */
/* CClientDC dc(this); */
HDC dc = GetDC(this->m_hParentWnd);
/* if we don't have one yet, set up a memory dc for the grid */
if (this->m_dcGrid == NULL)
{
this->m_dcGrid = CreateCompatibleDC(dc);
this->m_bitmapGrid = CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
this->m_bitmapOldGrid = SelectObject(this->m_dcGrid, this->m_bitmapGrid);
}
SetBkColor(this->m_dcGrid, this->m_crBackColor);
/* fill the grid background */
FillRect(this->m_dcGrid, &this->m_rectClient, this->m_brushBack);
/* draw the plot rectangle: */
/* determine how wide the y axis scaling values are */
nCharacters = abs((int)log10(fabs(this->m_dUpperLimit)));
nCharacters = max(nCharacters, abs((int)log10(fabs(this->m_dLowerLimit))));
/* add the units digit, decimal point and a minus sign, and an extra space */
/* as well as the number of decimal places to display */
nCharacters = nCharacters + 4 + this->m_nYDecimals;
/* adjust the plot rectangle dimensions */
/* assume 6 pixels per character (this may need to be adjusted) */
/* m_rectPlot.left = m_rectClient.left + 6*(nCharacters); */
this->m_rectPlot.left = this->m_rectClient.left;
this->m_nPlotWidth = this->m_rectPlot.right - this->m_rectPlot.left;/* m_rectPlot.Width(); */
/* draw the plot rectangle */
oldPen = SelectObject(this->m_dcGrid, solidPen);
MoveToEx(this->m_dcGrid, this->m_rectPlot.left, this->m_rectPlot.top, NULL);
LineTo(this->m_dcGrid, this->m_rectPlot.right+1, this->m_rectPlot.top);
LineTo(this->m_dcGrid, this->m_rectPlot.right+1, this->m_rectPlot.bottom+1);
LineTo(this->m_dcGrid, this->m_rectPlot.left, this->m_rectPlot.bottom+1);
/* LineTo(m_dcGrid, m_rectPlot.left, m_rectPlot.top); */
SelectObject(this->m_dcGrid, oldPen);
DeleteObject(solidPen);
/* draw the dotted lines,
* use SetPixel instead of a dotted pen - this allows for a
* finer dotted line and a more "technical" look
*/
nMidGridPix = (this->m_rectPlot.top + this->m_rectPlot.bottom)/2;
nTopGridPix = nMidGridPix - this->m_nPlotHeight/4;
nBottomGridPix = nMidGridPix + this->m_nPlotHeight/4;
for (i=this->m_rectPlot.left; i<this->m_rectPlot.right; i+=2)
{
SetPixel(this->m_dcGrid, i, nTopGridPix, this->m_crGridColor);
SetPixel(this->m_dcGrid, i, nMidGridPix, this->m_crGridColor);
SetPixel(this->m_dcGrid, i, nBottomGridPix, this->m_crGridColor);
}
for (i=this->m_rectPlot.left; i<this->m_rectPlot.right; i+=10)
{
for (j=this->m_rectPlot.top; j<this->m_rectPlot.bottom; j+=2)
{
SetPixel(this->m_dcGrid, i, j, this->m_crGridColor);
/* SetPixel(m_dcGrid, i, j, m_crGridColor); */
/* SetPixel(m_dcGrid, i, j, m_crGridColor); */
}
}
/* at this point we are done filling the grid bitmap, */
/* no more drawing to this bitmap is needed until the settings are changed */
/* if we don't have one yet, set up a memory dc for the plot */
if (this->m_dcPlot == NULL)
{
this->m_dcPlot = CreateCompatibleDC(dc);
this->m_bitmapPlot = CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
this->m_bitmapOldPlot = SelectObject(this->m_dcPlot, this->m_bitmapPlot);
}
/* make sure the plot bitmap is cleared */
SetBkColor(this->m_dcPlot, this->m_crBackColor);
FillRect(this->m_dcPlot, &this->m_rectClient, this->m_brushBack);
/* finally, force the plot area to redraw */
InvalidateRect(this->m_hParentWnd, &this->m_rectClient, TRUE);
ReleaseDC(this->m_hParentWnd, dc);
}
void GraphCtrl_SetRange(TGraphCtrl* this, double dLower, double dUpper, int nDecimalPlaces)
{
/* ASSERT(dUpper > dLower); */
this->m_dLowerLimit = dLower;
this->m_dUpperLimit = dUpper;
this->m_nYDecimals = nDecimalPlaces;
this->m_dRange = this->m_dUpperLimit - this->m_dLowerLimit;
this->m_dVerticalFactor = (double)this->m_nPlotHeight / this->m_dRange;
/* clear out the existing garbage, re-start with a clean plot */
GraphCtrl_InvalidateCtrl(this);
}
void GraphCtrl_SetGridColor(TGraphCtrl* this, COLORREF color)
{
this->m_crGridColor = color;
/* clear out the existing garbage, re-start with a clean plot */
GraphCtrl_InvalidateCtrl(this);
}
void GraphCtrl_SetPlotColor(TGraphCtrl* this, int plot, COLORREF color)
{
this->m_crPlotColor[plot] = color;
DeleteObject(this->m_penPlot[plot]);
this->m_penPlot[plot] = CreatePen(PS_SOLID, 0, this->m_crPlotColor[plot]);
/* clear out the existing garbage, re-start with a clean plot */
GraphCtrl_InvalidateCtrl(this);
}
void GraphCtrl_SetBackgroundColor(TGraphCtrl* this, COLORREF color)
{
this->m_crBackColor = color;
DeleteObject(this->m_brushBack);
this->m_brushBack = CreateSolidBrush(this->m_crBackColor);
/* clear out the existing garbage, re-start with a clean plot */
GraphCtrl_InvalidateCtrl(this);
}
static void GraphCtrl_DrawPoint(TGraphCtrl* this)
{
/* this does the work of "scrolling" the plot to the left
* and appending a new data point all of the plotting is
* directed to the memory based bitmap associated with m_dcPlot
* the will subsequently be BitBlt'd to the client in Paint
*/
int currX, prevX, currY, prevY;
HPEN oldPen;
RECT rectCleanUp;
int i;
if (this->m_dcPlot != NULL)
{
/* shift the plot by BitBlt'ing it to itself
* note: the m_dcPlot covers the entire client
* but we only shift bitmap that is the size
* of the plot rectangle
* grab the right side of the plot (excluding m_nShiftPixels on the left)
* move this grabbed bitmap to the left by m_nShiftPixels
*/
BitBlt(this->m_dcPlot, this->m_rectPlot.left, this->m_rectPlot.top+1,
this->m_nPlotWidth, this->m_nPlotHeight, this->m_dcPlot,
this->m_rectPlot.left+this->m_nShiftPixels, this->m_rectPlot.top+1,
SRCCOPY);
/* establish a rectangle over the right side of plot */
/* which now needs to be cleaned up prior to adding the new point */
rectCleanUp = this->m_rectPlot;
rectCleanUp.left = rectCleanUp.right - this->m_nShiftPixels;
/* fill the cleanup area with the background */
FillRect(this->m_dcPlot, &rectCleanUp, this->m_brushBack);
/* draw the next line segment */
for (i = 0; i < MAX_PLOTS; i++)
{
/* grab the plotting pen */
oldPen = SelectObject(this->m_dcPlot, this->m_penPlot[i]);
/* move to the previous point */
prevX = this->m_rectPlot.right-this->m_nPlotShiftPixels;
prevY = this->m_rectPlot.bottom -
(int)((this->m_dPreviousPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
MoveToEx(this->m_dcPlot, prevX, prevY, NULL);
/* draw to the current point */
currX = this->m_rectPlot.right-this->m_nHalfShiftPixels;
currY = this->m_rectPlot.bottom -
(int)((this->m_dCurrentPosition[i] - this->m_dLowerLimit) * this->m_dVerticalFactor);
LineTo(this->m_dcPlot, currX, currY);
/* Restore the pen */
SelectObject(this->m_dcPlot, oldPen);
/* if the data leaks over the upper or lower plot boundaries
* fill the upper and lower leakage with the background
* this will facilitate clipping on an as needed basis
* as opposed to always calling IntersectClipRect
*/
if ((prevY <= this->m_rectPlot.top) || (currY <= this->m_rectPlot.top))
{
RECT rc;
SetRect(&rc, prevX, this->m_rectClient.top, currX + 1, this->m_rectPlot.top + 1);
FillRect(this->m_dcPlot, &rc, this->m_brushBack);
}
if ((prevY >= this->m_rectPlot.bottom) || (currY >= this->m_rectPlot.bottom))
{
RECT rc;
SetRect(&rc, prevX, this->m_rectPlot.bottom + 1, currX + 1,
this->m_rectClient.bottom + 1);
/* RECT rc(prevX, m_rectPlot.bottom+1, currX+1, m_rectClient.bottom+1); */
FillRect(this->m_dcPlot, &rc, this->m_brushBack);
}
/* store the current point for connection to the next point */
this->m_dPreviousPosition[i] = this->m_dCurrentPosition[i];
}
}
}
double GraphCtrl_AppendPoint(TGraphCtrl* this,
double dNewPoint0, double dNewPoint1,
double dNewPoint2, double dNewPoint3)
{
/* append a data point to the plot & return the previous point */
double dPrevious;
dPrevious = this->m_dCurrentPosition[0];
this->m_dCurrentPosition[0] = dNewPoint0;
this->m_dCurrentPosition[1] = dNewPoint1;
this->m_dCurrentPosition[2] = dNewPoint2;
this->m_dCurrentPosition[3] = dNewPoint3;
GraphCtrl_DrawPoint(this);
/* Invalidate(); */
return dPrevious;
}
static void GraphCtrl_Paint(TGraphCtrl* this, HWND hWnd, HDC dc)
{
HDC memDC;
HBITMAP memBitmap;
HBITMAP oldBitmap; /* bitmap originally found in CMemDC */
/* no real plotting work is performed here, */
/* just putting the existing bitmaps on the client */
/* to avoid flicker, establish a memory dc, draw to it */
/* and then BitBlt it to the client */
memDC = CreateCompatibleDC(dc);
memBitmap = CreateCompatibleBitmap(dc, this->m_nClientWidth, this->m_nClientHeight);
oldBitmap = SelectObject(memDC, memBitmap);
if (memDC != NULL)
{
/* first drop the grid on the memory dc */
BitBlt(memDC, 0, 0, this->m_nClientWidth, this->m_nClientHeight, this->m_dcGrid, 0, 0, SRCCOPY);
/* now add the plot on top as a "pattern" via SRCPAINT. */
/* works well with dark background and a light plot */
BitBlt(memDC, 0, 0, this->m_nClientWidth, this->m_nClientHeight, this->m_dcPlot, 0, 0, SRCPAINT); /* SRCPAINT */
/* finally send the result to the display */
BitBlt(dc, 0, 0, this->m_nClientWidth, this->m_nClientHeight, memDC, 0, 0, SRCCOPY);
}
SelectObject(memDC, oldBitmap);
DeleteObject(memBitmap);
DeleteDC(memDC);
}
extern TGraphCtrl PerformancePageCpuUsageHistoryGraph;
extern TGraphCtrl PerformancePageMemUsageHistoryGraph;
extern HWND hPerformancePageCpuUsageHistoryGraph;
extern HWND hPerformancePageMemUsageHistoryGraph;
INT_PTR CALLBACK
GraphCtrl_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
RECT rcClient;
HDC hdc;
PAINTSTRUCT ps;
switch (message)
{
case WM_ERASEBKGND:
return TRUE;
/*
* Filter out mouse & keyboard messages
*/
/* case WM_APPCOMMAND: */
case WM_CAPTURECHANGED:
case WM_LBUTTONDBLCLK:
case WM_LBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONDBLCLK:
case WM_MBUTTONDOWN:
case WM_MBUTTONUP:
case WM_MOUSEACTIVATE:
case WM_MOUSEHOVER:
case WM_MOUSELEAVE:
case WM_MOUSEMOVE:
/* case WM_MOUSEWHEEL: */
case WM_NCHITTEST:
case WM_NCLBUTTONDBLCLK:
case WM_NCLBUTTONDOWN:
case WM_NCLBUTTONUP:
case WM_NCMBUTTONDBLCLK:
case WM_NCMBUTTONDOWN:
case WM_NCMBUTTONUP:
/* case WM_NCMOUSEHOVER: */
/* case WM_NCMOUSELEAVE: */
case WM_NCMOUSEMOVE:
case WM_NCRBUTTONDBLCLK:
case WM_NCRBUTTONDOWN:
case WM_NCRBUTTONUP:
/* case WM_NCXBUTTONDBLCLK: */
/* case WM_NCXBUTTONDOWN: */
/* case WM_NCXBUTTONUP: */
case WM_RBUTTONDBLCLK:
case WM_RBUTTONDOWN:
case WM_RBUTTONUP:
/* case WM_XBUTTONDBLCLK: */
/* case WM_XBUTTONDOWN: */
/* case WM_XBUTTONUP: */
case WM_ACTIVATE:
case WM_CHAR:
case WM_DEADCHAR:
case WM_GETHOTKEY:
case WM_HOTKEY:
case WM_KEYDOWN:
case WM_KEYUP:
case WM_KILLFOCUS:
case WM_SETFOCUS:
case WM_SETHOTKEY:
case WM_SYSCHAR:
case WM_SYSDEADCHAR:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
return 0;
case WM_NCCALCSIZE:
return 0;
case WM_SIZE:
if (hWnd == hPerformancePageMemUsageHistoryGraph)
{
GraphCtrl_Resize(&PerformancePageMemUsageHistoryGraph);
GraphCtrl_InvalidateCtrl(&PerformancePageMemUsageHistoryGraph);
}
if (hWnd == hPerformancePageCpuUsageHistoryGraph)
{
GraphCtrl_Resize(&PerformancePageCpuUsageHistoryGraph);
GraphCtrl_InvalidateCtrl(&PerformancePageCpuUsageHistoryGraph);
}
return 0;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
GetClientRect(hWnd, &rcClient);
if (hWnd == hPerformancePageMemUsageHistoryGraph)
GraphCtrl_Paint(&PerformancePageMemUsageHistoryGraph, hWnd, hdc);
if (hWnd == hPerformancePageCpuUsageHistoryGraph)
GraphCtrl_Paint(&PerformancePageCpuUsageHistoryGraph, hWnd, hdc);
EndPaint(hWnd, &ps);
return 0;
}
/*
* We pass on all non-handled messages
*/
return CallWindowProcW(OldGraphCtrlWndProc, hWnd, message, wParam, lParam);
}
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