www.pudn.com > CDrawLine.zip > Graph.cpp
// Graph.cpp : implementation file
#include "stdafx.h"
#include "CDrawLine.h"//应改为对应应用程序的头文件
#include "GraphSeries.h"
#include "GraphLegend.h"
#include "math.h"
#include "Graph.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define GREEN RGB(0,255,0)
#define BLUE RGB(0,0,255)
#define RED RGB(255,0,0)
#define YELLOW RGB(255,255,0)
#define ORANGE RGB(255,153,51)
#define HOT_PINK RGB(255,51,153)
#define PURPLE RGB(153,0,204)
#define CYAN RGB(0,255,255)
#define BLACK RGB(0,0,0)
#define WHITE RGB(255,255,255)
/////////////////////////////////////////////////////////////////////////////
// CGraph
CGraph::CGraph()
{
graphSeries = new CObList();
tickRange = 100;
seriesSize = 0;
graphHasLegend = FALSE;
legendWidth = 0;
graphType = 0;
//以下为设置图例的背景色
dataColor[0] = GREEN; //green
dataColor[1] = BLUE; //blue
dataColor[2] = RED; //red
dataColor[3] = YELLOW; //yellow
dataColor[4] = ORANGE; //orange
dataColor[5] = HOT_PINK; //hot pink
dataColor[6] = PURPLE; //purple
dataColor[7] = CYAN; //cyan
dataColor[8] = BLACK; //black
dataColor[9] = WHITE; //white
//以上为图例的背景色
xAxisAlign = 0; //horizontal
xAxisLabelLength = 0;
xTickFontSize = 12;//x轴的单元格字体大小
yTickFontSize = 12;//y轴的单元格字体
legendFontSize = 12;//图例中的字体大小
m_DrawMode=DEFAULTMODE;
}
CGraph::CGraph(int type,int drawmode)
{
graphSeries = new CObList();
tickRange = 100;
seriesSize = 0;
graphHasLegend = FALSE;
legendWidth = 0;
m_DrawMode=drawmode;
graphType = type;
//以下为设置图例的背景色
dataColor[0] = GREEN; //green
dataColor[1] = BLUE; //blue
dataColor[2] = RED; //red
dataColor[3] = YELLOW; //yellow
dataColor[4] = ORANGE; //orange
dataColor[5] = HOT_PINK; //hot pink
dataColor[6] = PURPLE; //purple
dataColor[7] = CYAN; //cyan
dataColor[8] = BLACK; //black
dataColor[9] = WHITE; //white
//以上为图例的背景色
xAxisAlign = 0; //horizontal
xAxisLabelLength = 0;
xTickFontSize = 12;//x轴的单元格字体大小
yTickFontSize = 12;//y轴的单元格字体大小
legendFontSize =16;//图例中的字体大小
}
CGraph::~CGraph()
{
POSITION pos;
CGraphSeries* pSeries;
for( pos = graphSeries->GetHeadPosition(); pos != NULL; )
{
pSeries = (CGraphSeries*) graphSeries->GetNext( pos );
delete pSeries;
}
graphSeries->RemoveAll();
delete graphSeries;
}
BEGIN_MESSAGE_MAP(CGraph, CStatic)
//{{AFX_MSG_MAP(CGraph)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CGraph message handlers
void CGraph::SetTickSpace(int yDist)
{
tickSpace = yDist;
}
void CGraph::SetTickRange(int maxTick)
{
tickRange = maxTick;
}
void CGraph::SetGraphType(int gType)
{
graphType = gType;
}
void CGraph::SetXAxisAlignment(int alignValue)
{
xAxisAlign = alignValue;
}
int CGraph::GetXAxisAlignment()
{
return xAxisAlign;
}
void CGraph::DrawGraph(CDC* pDC)
{
CString tickLabel;
CWnd* graphWnd = pDC->GetWindow();//此调用得到pDC对应的窗口，即此绘图的区域
CRect graphRect;
graphWnd->GetClientRect(&graphRect);
//reset graph to be clear background
COLORREF backColor;
backColor = RGB(255,255,255); //设置你所希望的背景色
m_background=backColor;
CBrush backBrush (backColor);
CBrush* pOldBackBrush;
pOldBackBrush = pDC->SelectObject(&backBrush);
pDC->Rectangle(0, 0, graphRect.Width(), graphRect.Height());
pDC->SelectObject(pOldBackBrush);
pDC->SetBkMode(TRANSPARENT);
maxHeight = graphRect.Height() - 20; //for frame window and status bar
maxWidth = graphRect.Width() - 5; //for frame window
//We will leave 5 pixels blank on all sides of the graph. So
//top-left side of graph is at 5,5 and the bottom-right side of
//graph is at ((maxHeight - 5), (maxWidth - 5))
//these settings are altered by axis labels and legends.
//draw graph title
CFont titleFont;//设置标题的自体
titleFont.CreateFont(28, 0, 0, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
CFont* pOldFont = (CFont*) pDC->SelectObject(&titleFont);
pDC->TextOut((maxWidth / 2) - ((graphTitle.GetLength() * 12) / 2),
10, graphTitle);//绘制标题的位置
pDC->SelectObject(pOldFont);
if(graphType == 2) //pie
{
//since pie does not have axis lines, set to full size minus 5 on each side
//these are needed for legend to plot itself
xAxisWidth = maxWidth - 10;
yAxisHeight = maxHeight - 20; //10 buffer and 20 for title
xApexPoint = 5;
yApexPoint = maxHeight - 5;
}
else
{
//X-axis will be raised by 20 pixels for tick-labels
//Y-axis will be shifted by (max(tick-label size) * 10) + label * 10
tickLabel.Format("%d", tickRange);
//determine axis specifications
//tick label offset is 4 (for the tick) + 6 (total 10) from axis line
xApexPoint = 5 + (tickLabel.GetLength() * (yTickFontSize/ 2 )) + 10 + 30/*(axisYLabel.GetLength() * 8)*/ + 5; //allowing 8 pixels per char in tick label
//y apex based on 5 + 15 (x label) + 4 (for the tick) + 4 (text below tick) + 12 (tick label) + 10
if(!xAxisAlign) //horizontal
yApexPoint = (maxHeight - 5) - 45; //apex points are the cross section of axis lines
else
yApexPoint = (maxHeight - 5) - (xAxisLabelLength * (xTickFontSize / 2)) - 10;
yAxisHeight = yApexPoint - 40;//从客户区往下40个像素
xAxisWidth = (maxWidth - 5) - xApexPoint;//实际长度为maxwidth-5
}
//draw legend
if(graphHasLegend)
DrawLegend(pDC);
if(graphType != 2) //pie
{
//draw axis lines
DrawAxis(pDC);
}
//draw series data and labels
DrawSeries(pDC);
}
void CGraph::DrawAxis(CDC* pDC)
{
pDC->SetTextColor(RGB(0,0,0));
BOOL drawarrow=FALSE;
//draw y axis
double tickScale = 0.00;//tickScale按比例缩小y轴单元
if(tickRange > yAxisHeight)
tickScale = ((yAxisHeight * 1.00) / (tickRange * 1.00)) * tickSpace;
else tickScale = tickSpace;
int ymutiple;
ymutiple = tickRange / tickSpace;
m_nUnits=yAxisHeight/ymutiple;//设置每个逻辑单元的像素数目
int ylength = yApexPoint - (ymutiple* tickScale);
if(m_DrawMode==DEFAULTMODE)
{
pDC->MoveTo(xApexPoint, yApexPoint);
pDC->LineTo(xApexPoint, ylength);//(yApexPoint - yAxisHeight)被ylength替换
}
else
{
pDC->MoveTo(xApexPoint, yApexPoint);
pDC->LineTo(xApexPoint, yApexPoint - yAxisHeight);
}
//draw x axis
POINT xaxisRight;
pDC->MoveTo(xApexPoint, yApexPoint);
if(graphHasLegend)
{
pDC->LineTo(xApexPoint + (xAxisWidth - legendWidth - 10), yApexPoint);
xaxisRight.x=xApexPoint+ (xAxisWidth - legendWidth - 10);
}
else
{
pDC->LineTo(xApexPoint + xAxisWidth, yApexPoint);
xaxisRight.x=xApexPoint + xAxisWidth;
}
xaxisRight.y =yApexPoint;
//绘制x轴的箭头
POINT pointx4[4];
pointx4[0].x=xaxisRight.x;
pointx4[0].y=xaxisRight.y;
pointx4[1].x=xaxisRight.x-10;
pointx4[1].y=xaxisRight.y+4;
pointx4[2].x=xaxisRight.x-8;
pointx4[2].y=xaxisRight.y;
pointx4[3].x=xaxisRight.x-10;
pointx4[3].y=xaxisRight.y-4;
HRGN arrowrgnx;
arrowrgnx=::CreatePolygonRgn(pointx4,4,WINDING);
::Polygon(pDC->m_hDC,pointx4,4);
::InvertRgn(pDC->m_hDC,arrowrgnx);
//以上绘制x轴的箭头
//draw labels
CFont sideFont;
sideFont.CreateFont(16, 0, 900, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");//创建y轴标签字体
CFont* pOldFont = (CFont*) pDC->SelectObject(&sideFont);
pDC->TextOut(10, (maxHeight / 2) + ((axisYLabel.GetLength() / 2) * 4), axisYLabel);
pDC->SelectObject(pOldFont);
pDC->TextOut(xApexPoint + (xAxisWidth / 2) - ((axisXLabel.GetLength() / 2) * 19), maxHeight - 5 - 6, axisXLabel);
//draw y axis ticks
for(int y = 1; y <= tickRange / tickSpace; y++) //no tick at 0
{
int tickYLocation = yApexPoint - (y * tickScale);
if(y < tickRange / tickSpace&&m_DrawMode==DEFAULTMODE)
{
pDC->MoveTo(xApexPoint - 4, tickYLocation);
pDC->LineTo(xApexPoint + 4, tickYLocation);
}
else if(m_DrawMode==DEFAULTMODE)//绘制y轴顶端的箭头(其中点为坐标值)
{
POINT point4[4];
point4[0].x=xApexPoint;
point4[0].y=tickYLocation-6;
point4[1].x=xApexPoint-4;
point4[1].y=tickYLocation+6;
point4[2].x=xApexPoint;
point4[2].y=tickYLocation+2;
point4[3].x=xApexPoint+4;
point4[3].y=tickYLocation+6;
HRGN arrowrgn;
arrowrgn=::CreatePolygonRgn(point4,4,WINDING);
::Polygon(pDC->m_hDC,point4,4);
::InvertRgn(pDC->m_hDC,arrowrgn);
}
else
{
tickYLocation = yApexPoint - (y *m_nUnits);
if(drawarrow==FALSE)
{
POINT point4[4];
point4[0].x=xApexPoint;
point4[0].y=yApexPoint -yAxisHeight-6;
point4[1].x=xApexPoint-4;
point4[1].y=yApexPoint -yAxisHeight+6;
point4[2].x=xApexPoint;
point4[2].y=yApexPoint -yAxisHeight+2;
point4[3].x=xApexPoint+4;
point4[3].y=yApexPoint -yAxisHeight+6;
HRGN arrowrgn;
arrowrgn=::CreatePolygonRgn(point4,4,WINDING);
::Polygon(pDC->m_hDC,point4,4);
::InvertRgn(pDC->m_hDC,arrowrgn);
drawarrow=TRUE;
}
pDC->MoveTo(xApexPoint - 4, tickYLocation);
pDC->LineTo(xApexPoint + 4, tickYLocation);
}
//draw tick label
CString tickLabel;
tickLabel.Format("%d", y * tickSpace);
CFont yFont;
yFont.CreateFont(yTickFontSize, 0, 0, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
pOldFont = (CFont*) pDC->SelectObject(&yFont);
pDC->TextOut(xApexPoint - 10 - (tickLabel.GetLength() * (yTickFontSize / 2)), tickYLocation - 6, tickLabel);
pDC->SelectObject(pOldFont);
}
//draw X axis tick marks
POSITION pos;
pos = graphSeries->GetHeadPosition();
CGraphSeries* tmpSeries;
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
int seriesSpace;
int tickXLocation;
if(graphHasLegend)
seriesSpace= (xAxisWidth - legendWidth - 10) / graphSeries->GetCount();
else
seriesSpace= xAxisWidth / graphSeries->GetCount();
tickXLocation = xApexPoint + ((x * seriesSpace) - (seriesSpace / 2));
pDC->MoveTo(tickXLocation,yApexPoint - 4);
pDC->LineTo(tickXLocation,yApexPoint + 4);
//draw tick label
CString tickLabel;
tickLabel = tmpSeries->GetLabel();
if(!xAxisAlign) //horizontal
pDC->TextOut(tickXLocation - ((tickLabel.GetLength() * 8) / 2), yApexPoint + 8, tickLabel);
else
{
CFont sideFont2;
sideFont2.CreateFont(xTickFontSize, 0, (xAxisAlign * 10), 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
pOldFont = (CFont*) pDC->SelectObject(&sideFont2);
if(xAxisAlign < 180)
pDC->TextOut(tickXLocation - 8, yApexPoint + 8 + (xAxisLabelLength * (xTickFontSize / 2)), tickLabel);
else
pDC->TextOut(tickXLocation + 2, yApexPoint + 8, tickLabel);
pDC->SelectObject(pOldFont);
}
}
}
void CGraph::AddSeries(CGraphSeries* dataSet)
{
int numData = 0;
for(int i = 0; i < 10; i++)
{
if(dataSet->GetData(i) > 0)
numData++;
if(dataSet->GetLabel().GetLength() > xAxisLabelLength)
xAxisLabelLength = dataSet->GetLabel().GetLength();
}
if(numData > seriesSize)
seriesSize = numData;
graphSeries->AddTail(dataSet);
}
void CGraph::SetXAxisLabel(CString label)
{
axisXLabel = label;
}
void CGraph::SetYAxisLabel(CString label)
{
axisYLabel = label;
}
void CGraph::SetColor(int group, COLORREF groupColor)
{
dataColor[group] = groupColor;
}
COLORREF CGraph::GetColor(int group)
{
return dataColor[group];
}
void CGraph::DrawSeries(CDC* pDC)
{
int barWidth;
int dataPlotSize; //used to plot rects of data
int barL, barT, barR, barB;
int tickXLocation;
int seriesSpace;
double barHeight; //for scalability
POSITION pos;
CGraphSeries* tmpSeries;
if(graphType == 0) //bar
{
//determine width of barchart data blocks每个系列占等宽，好象有缺陷
if(graphHasLegend)
seriesSpace = (xAxisWidth - legendWidth - 10) / graphSeries->GetCount();
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
barWidth = (seriesSpace * .6) / seriesSize;
dataPlotSize = seriesSize * barWidth;//图块区占.6
pos = graphSeries->GetHeadPosition();
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
tickXLocation = xApexPoint + ((x * seriesSpace) - (seriesSpace/2));
for(int s = 0; s < seriesSize; s++)
{
barHeight = 0.00;
//to allow scalability (height may be less than tickRange)
double dataScale = 0.00;
if(tickRange > yAxisHeight)
dataScale = (yAxisHeight * 1.00) / (tickRange * 1.00);
else dataScale = 1;
if(tickRange > tmpSeries->GetData(s))
barHeight = (tmpSeries->GetData(s) * 1.00) * dataScale;
else barHeight = tickRange * dataScale;
if(m_DrawMode==RELATIVEMODE)
{
barHeight =(tmpSeries->GetData(s)*1.00)*m_nUnits/(tickSpace * 1.00);
if(tmpSeries->GetData(s)>=tickRange)
barHeight=yAxisHeight;//警告，此时数据可能越界，截断越界高度
}
barL = tickXLocation - (dataPlotSize / 2) + (s * barWidth);
barT = yApexPoint - barHeight;
barR = barL + barWidth;
barB = yApexPoint;
COLORREF barColor;
barColor = GetColor(s);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
pDC->Rectangle(barL, barT, barR, barB);
pDC->SelectObject(pOldBrush);
}
}
}
if(graphType == 1) //line
{
int lastXLoc, lastYLoc;
BOOL samsaratag=FALSE;//用于绘制线段标题时其位置的轮换
int Count=graphSeries->GetCount();
POINT linepoints[10][50];//储存所有顶点
for (int i=0;i<10;i++)
for(int j=0;j<50;j++)
{
linepoints[i][j].x=0;
linepoints[i][j].y=0;
}
for(int s = 0; s < seriesSize; s++)
{
//determine width of barchart data blocks
if(graphHasLegend)
seriesSpace = (xAxisWidth - legendWidth - 10) / graphSeries->GetCount();
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
barWidth = (seriesSpace * .6) / seriesSize;
dataPlotSize = seriesSize * barWidth;
pos = graphSeries->GetHeadPosition();
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
tickXLocation = xApexPoint + ((x * seriesSpace) - (seriesSpace / 2));
barHeight = 0.00;
//to allow scalability (height may be less than tickRange)
double dataScale = 0.00;
if(tickRange > yAxisHeight)
dataScale = (yAxisHeight * 1.00) / (tickRange * 1.00);
else dataScale = 1;
barHeight = (tmpSeries->GetData(s) * 1.00) * dataScale;
if(m_DrawMode==RELATIVEMODE)
{
barHeight = (tmpSeries->GetData(s)*1.00)*m_nUnits/(tickSpace * 1.00);
if(tmpSeries->GetData(s)>=tickRange)
barHeight=yAxisHeight;//警告，此时数据可能越界，截断越界高度
}
int yDataLocation = yApexPoint - barHeight;
//now have x and y location of center of ellipse
COLORREF barColor;
barColor = GetColor(s);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
//draw line back to last data member
if(x > 1)
{
CPen* pOldPen;
CPen linePen (PS_SOLID, 1, barColor);
pOldPen = pDC->SelectObject(&linePen);
pDC->MoveTo(lastXLoc + 2, lastYLoc - 1);
pDC->LineTo(tickXLocation - 3, yDataLocation - 1);
linepoints[s][x-1].x =tickXLocation;
linepoints[s][x-1].y =yDataLocation;
if(x==graphSeries->GetCount())
{//以下为调整linetitle，避免它们互相重叠
CString title;
if (s>0)
{
for(int i=0;i<=s-1;i++)
{
if( abs(tickXLocation -linepoints[i][graphSeries->GetCount()-1].x)<30&&abs(yDataLocation -linepoints[i][graphSeries->GetCount()-1].y)<30)//标题间区域至少(30,30)
{
samsaratag=TRUE;//需要调整
break;
}
}
}
if(samsaratag==FALSE)//默认绘在线段的末尾
{
title=CGraphSeries::GetLineTitle(s);
pDC->SetTextColor(barColor);
if( CGraphSeries::GetTitleFlag()!=FALSE)
pDC->TextOut(tickXLocation + 6, yDataLocation - 8,title);
}
else
{
POINT ptext;
ptext.x =linepoints[s][graphSeries->GetCount()-2].x;
ptext.y =linepoints[s][graphSeries->GetCount()-2].y;
linepoints[s][graphSeries->GetCount()-1].x=ptext.x;
linepoints[s][graphSeries->GetCount()-1].y=ptext.y;
for(int i=0;i<=s-1;i++)
{
if( abs(ptext.x -linepoints[i][graphSeries->GetCount()-1].x)<30&&abs(ptext.y -linepoints[i][graphSeries->GetCount()-1].y)<30)
{
BOOL exitflag=TRUE;
ptext.x =linepoints[s][graphSeries->GetCount()-3-i].x;
ptext.y =linepoints[s][graphSeries->GetCount()-3-i].y;
linepoints[s][graphSeries->GetCount()-1].x=ptext.x;
linepoints[s][graphSeries->GetCount()-1].y=ptext.y;
for(int j=0;jGetCount()-1].x)<30&&abs(ptext.y -linepoints[j][graphSeries->GetCount()-1].y)<30)
exitflag=FALSE;
}
if(exitflag)
break;
}
}
title=CGraphSeries::GetLineTitle(s);
pDC->SetTextColor(barColor);
if( CGraphSeries::GetTitleFlag()!=FALSE)
pDC->TextOut(ptext.x + 6, ptext.y - 8,title);
samsaratag=FALSE;
}//调整完毕
}
pDC->SelectObject(pOldPen);
}
//now draw ellipse...
pDC->Ellipse(tickXLocation - 3, yDataLocation - 3,
tickXLocation + 3, yDataLocation + 3);
linepoints[s][x-2].x= lastXLoc = tickXLocation;
linepoints[s][x-2].y=lastYLoc = yDataLocation;
pDC->SelectObject(pOldBrush);
}
}
}
if(graphType == 2) //pie
{
double dataSum = 0.00; //for storing cumulative sum
int lastXLocation, lastYLocation;
int newXLocation, newYLocation;
double percent = 0.00;
int degrees;
double totalSum = 0.00;
int deltaXY;
int radius;
lastXLocation = 0;
lastYLocation = 0;
//determine width of pie display area
if(graphHasLegend)
if(((xAxisWidth - legendWidth/* - 10*/) / graphSeries->GetCount())
> (yAxisHeight - 10))
seriesSpace = (yAxisHeight - 10)/* / graphSeries->GetCount()*/;
else
seriesSpace = (xAxisWidth - legendWidth/* - 10*/) / graphSeries->GetCount();
else
if(xAxisWidth > yAxisHeight)
seriesSpace = yAxisHeight / graphSeries->GetCount();
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
double tmpD = (seriesSpace - /*60*/20)* .8; //max width of any pie
radius = tmpD / 2;
int centerYPie = (yAxisHeight + 60) / 2;
pos = graphSeries->GetHeadPosition();
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
totalSum = 0;
for(int s = 0; s < 10; s++)
totalSum += tmpSeries->GetData(s);
int pieLeft, pieRight;
if(graphSeries->GetCount() == 1)
{
pieLeft = ((xAxisWidth - legendWidth - 10) / 2) - radius/* - 25*/;
}
else
{
pieLeft = xApexPoint + 15 + (x * /*50*/20) + ((x - 1) * (2 * radius));
}
pieRight = pieLeft + (2 * radius);
CRect pieRect (pieLeft,
centerYPie - radius,
pieRight,
centerYPie + radius);
int centerXPie = pieLeft + radius;
//plot series label
pDC->TextOut(centerXPie - ((tmpSeries->GetLabel().GetLength() * 8) / 2),
centerYPie + radius + 15, tmpSeries->GetLabel());
lastXLocation = pieLeft;
lastYLocation = centerYPie;
dataSum = 0;
for(s = 0; s < 10; s++)
{
if(tmpSeries->GetData(s) > 0)
{
dataSum += tmpSeries->GetData(s);
percent = (dataSum * 100) / totalSum;
degrees = (360 * percent) / 100;
//degress / 90 will never exceed 4.
//this can tell us the quadrant of destination
deltaXY = (degrees * radius) / 90;
//deltaXY is change from start point of pie 0
//this value is total change. so if radius is 300
//and degrees is 270, delta is 300. The change
//would move both x and y 300 pixels. For x, 100
//to right is center, another 100 to right edge,
//100 back to center. For y, 100 to bottom, 100
//back to center, 100 to top. thus gives 270 degree
//rotation.
//determine destination quadrant...
//and set newXLocation and newYLocation values...
int quadrant = degrees / 90; //truncates decimal
switch(quadrant)
{
//in the computations below, the remarked line is
//the original computation. The line above it, for
//actual use, is the simplified line, and gives the
//exact same result
case 0 : newXLocation = pieLeft + deltaXY;
newYLocation = centerYPie + deltaXY;
break;
case 1 : newXLocation = pieLeft + deltaXY;
newYLocation = centerYPie + (2 * radius) - deltaXY;
// newYLocation = centerYPie + radius - (deltaXY - radius);
break;
case 2 : newXLocation = pieLeft + (4 * radius) - deltaXY;
// newXLocation = pieLeft + (2 * radius) - (deltaXY - (2 * radius));
newYLocation = centerYPie + (2 * radius) - deltaXY;
// newYLocation = centerYPie - (deltaXY - (2 * radius));
break;
case 3 : newXLocation = pieLeft + (4 * radius) - deltaXY;
// newXLocation = pieLeft + radius - (deltaXY - (3 * radius));
newYLocation = centerYPie - (4 * radius) + deltaXY;
// newYLocation = centerYPie - radius + (deltaXY - (3 * radius));
break;
case 4 : newXLocation = pieLeft;
newYLocation = centerYPie - 1;
break;
}
if(s == 0)
lastYLocation -= 1;
CPoint p1 (lastXLocation, lastYLocation);
CPoint p2 (newXLocation, newYLocation);
COLORREF barColor;
barColor = GetColor(s);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
pDC->Pie(pieRect, p1, p2);
pDC->SelectObject(pOldBrush);
lastXLocation = newXLocation;
lastYLocation = newYLocation;
}
}
}
}
}
void CGraph::SetLegend(int datagroup, CString label)
{
graphLegend.SetLegendText(datagroup, label);
graphHasLegend = TRUE;
}
void CGraph::DrawLegend(CDC* pDC)
{
//determine size of legend
//12 chars per seriesSize + 6 for spacing (3 top and bottom)
//+ 1 set for label title(3+12+6) + rectangle (2 chars) + 3 for final bottom buffer
int legendHeight = 23 + (seriesSize * 18) + 3;
int legendL, legendT, legendR, legendB;
int barL, barT, barR, barB;
legendT = (maxHeight / 2) - (legendHeight / 2);
legendB = legendT + legendHeight;
legendR = maxWidth - 5;
legendL = legendR - ((graphLegend.GetLegendLength() * (legendFontSize * .66)) + 25);
//allows 50 pixels for display of legend bar 45 + 5 space.
legendWidth = legendR - legendL;
pDC->Rectangle(legendL, legendT, legendR, legendB);
pDC->TextOut(legendL + (legendWidth / 2) - 24,
legendT + 3, "图例");//Legend
for(int i = 0; i < seriesSize; i++)
{
//top "Legend" text will use 12 + 3 top + 6 bottom (21 total)
//each legend label will need 3 chars on top, so the 24 in the offset
//each label than uses 12 + 3 below + 3 above next label, so 18
// in the i * offset.
CFont legendFont;
legendFont.CreateFont(legendFontSize, 0, 0, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
CFont* pOldFont = (CFont*) pDC->SelectObject(&legendFont);
pDC->TextOut(legendL + 5, legendT + 24 + (i * 18), graphLegend.GetLegendText(i));
pDC->SelectObject(pOldFont);
//draw bar
COLORREF barColor;
barColor = GetColor(i);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
barL = legendL + 5 + (graphLegend.GetLegendText(i).GetLength() * 6) + 5;
barT = legendT + 24 + (i * 18) + 1, graphLegend.GetLegendText(i);
barR = legendR - 5;
barB = barT + 12;
pDC->Rectangle(barL, barT, barR, barB);
pDC->SelectObject(pOldBrush);
}
}
void CGraph::SetGraphTitle(CString title)
{
graphTitle = title;
}
void CGraph::SetXTickFontSize(int size)
{
xTickFontSize = size;
}
void CGraph::SetYTickFontSize(int size)
{
yTickFontSize = size;
}
void CGraph::SetLegendFontSize(int size)
{
legendFontSize = size;
}
int CGraph::PrintGraph(CDC* pDC, CPrintInfo* pInfo)
{
CString str;
char tmpStr[10];
CFont graphTitleFont, textFont;
TEXTMETRIC tm;
CString tickLabel;
//titleFont is 24 point, bold
graphTitleFont.CreateFont(-480, 0, 0, 0, 700, FALSE, FALSE, 0, ANSI_CHARSET,
OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH || FF_ROMAN,
"Times New Roman");
//textFont is 12 point
textFont.CreateFont(-240, 0, 0, 0, 400, FALSE, FALSE, 0, ANSI_CHARSET,
OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH || FF_ROMAN,
"Times New Roman");
pDC->SetMapMode(MM_TWIPS);
if(pInfo->m_nCurPage == 1)
{
CFont* pOldFont = (CFont*) pDC->SelectObject(&graphTitleFont);
pDC->GetTextMetrics(&tm);
int charWidth = tm.tmMaxCharWidth;
//next line is centered....trust me !!
pDC->TextOut(((graphTitle.GetLength() / 2) * charWidth) - (leftMargin / 2), pGraphT, graphTitle);
pDC->SelectObject(pOldFont);
//draw legend
if(graphHasLegend)
PrintLegend(pDC);
maxHeight = pGraphT - pGraphB;
maxWidth = pGraphR - pGraphL - 2200;
if(graphType == 2) //pie
{
//since pie does not have axis lines, set to full size minus 5 on each side
//these are needed for legend to plot itself
xAxisWidth = pGraphR - pGraphL - legendWidth - 200;
yAxisHeight = maxHeight - 200; //100 buffer and 200 for title
xApexPoint = pGraphL + 1500;
yApexPoint = pGraphB + maxHeight + 500;
}
else
{
tickLabel.Format("%d", tickRange);
//determine axis specifications
xApexPoint = pGraphL + 350 + (tickLabel.GetLength() * 240);
yApexPoint = pGraphB + 500;
yAxisHeight = maxHeight + (pGraphB - yApexPoint) - 1000;
xAxisWidth = pGraphR - legendWidth - xApexPoint;
}
if(graphType != 2) //pie
{
//draw axis lines
PrintAxis(pDC);
}
//draw series data and labels
PrintSeries(pDC);
} //end printing for Page 1
//update pGraphB value to pad some space below the graph
pGraphB -= 90;
return pGraphB;
}
void CGraph::PrintLegend(CDC *pDC)
{
CFont legendLabelFont, legendTitleFont;
TEXTMETRIC tm;
int legendL, legendT, legendR, legendB;
int barL, barT, barR, barB;
//legendLabelFont is 10 point
legendLabelFont.CreateFont(-200, 0, 0, 0, 400, FALSE, FALSE, 0, ANSI_CHARSET,
OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH || FF_ROMAN,
"Times New Roman");
//legendTitleFont is 12 point
legendTitleFont.CreateFont(-240, 0, 0, 0, 400, FALSE, FALSE, 0, ANSI_CHARSET,
OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH || FF_ROMAN,
"Times New Roman");
// pDC->Rectangle(pGraphL, pGraphT, pGraphR, pGraphB);
legendT = (((pGraphB - pGraphT) / 2) + pGraphT) + (((seriesSize + 1) / 2) * 240 + 300);
legendB = (((pGraphB - pGraphT) / 2) + pGraphT) - (((seriesSize + 1) / 2) * 240 + 300);
legendR = pGraphR - 50;
legendL = legendR - ((legendR - pGraphL) * .15);
legendWidth = legendR - legendL;
pDC->Rectangle(legendL, legendT, legendR, legendB);
CFont* pOldFont = (CFont*) pDC->SelectObject(&legendTitleFont);
pDC->GetTextMetrics(&tm);
pDC->TextOut(legendL + (legendWidth / 2) - 360,
legendT - 160, "图例");//Legend
pDC->SelectObject(pOldFont);
for(int i = 0; i < seriesSize; i++)
{
pOldFont = (CFont*) pDC->SelectObject(&legendLabelFont);
pDC->GetTextMetrics(&tm);
int charWidth = tm.tmMaxCharWidth;
int charHeight = tm.tmHeight;
CString valuStr;
valuStr.Format("value %d", i + 1);
pDC->TextOut(legendL + 50, legendT - (2 * charHeight) - 120 - (i * charHeight), valuStr);
pDC->SelectObject(pOldFont);
//draw bar
COLORREF barColor;
barColor = GetColor(i);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
barL = legendL + (9 * 120);
barT = legendT - (2 * charHeight) - 120 - (i * charHeight) - 60;
barR = legendR - 50;
barB = barT - 120;
pDC->Rectangle(barL, barT, barR, barB);
pDC->SelectObject(pOldBrush);
}
}
void CGraph::PrintAxis(CDC *pDC)
{
pDC->SetTextColor(RGB(0,0,0));
//draw y axis
pDC->MoveTo(xApexPoint, yApexPoint);
pDC->LineTo(xApexPoint, yApexPoint + yAxisHeight - 250);
//draw x axis
pDC->MoveTo(xApexPoint, yApexPoint);
if(graphHasLegend)
pDC->LineTo(xApexPoint + (xAxisWidth - 500), yApexPoint);
else
pDC->LineTo(xApexPoint + xAxisWidth - 500, yApexPoint);
//draw labels
CFont sideFont;
sideFont.CreateFont(320, 0, 2700, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
CFont* pOldFont = (CFont*) pDC->SelectObject(&sideFont);
pDC->TextOut(pGraphL + 10, pGraphT - (maxHeight / 2) - ((axisYLabel.GetLength() / 2) * 160), axisYLabel);
pDC->SelectObject(pOldFont);
pDC->TextOut(xApexPoint + (xAxisWidth / 2) - ((axisXLabel.GetLength() / 2) * 19), maxHeight - 5 - 6, axisXLabel);
//to allow scalability (height may be less than tickRange)
double tickScale = 0.00;
if(tickRange > yAxisHeight)
tickScale = ((yAxisHeight * 1.00) / (tickRange * 1.00)) * (tickSpace * 20);
else tickScale = tickSpace * 15;
//draw y axis ticks
for(int y = 1; y <= tickRange / tickSpace; y++) //no tick at 0
{
int tickYLocation = yApexPoint + (y * tickScale);
pDC->MoveTo(xApexPoint - 75, tickYLocation);
pDC->LineTo(xApexPoint + 75, tickYLocation);
//draw tick label
CString tickLabel;
tickLabel.Format("%d", y * tickSpace);
CFont yFont;
yFont.CreateFont(yTickFontSize * 20, 0, 0, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
pOldFont = (CFont*) pDC->SelectObject(&yFont);
pDC->TextOut(xApexPoint - 150 - (tickLabel.GetLength() * (yTickFontSize / 2) * 20), tickYLocation + 120, tickLabel);
pDC->SelectObject(pOldFont);
}
//draw X axis tick marks
POSITION pos;
pos = graphSeries->GetHeadPosition();
CGraphSeries* tmpSeries;
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
int seriesSpace;
int tickXLocation;
if(graphHasLegend)
seriesSpace= (xAxisWidth - legendWidth - 10) / graphSeries->GetCount();
else
seriesSpace= xAxisWidth / graphSeries->GetCount();
tickXLocation = xApexPoint + ((x * seriesSpace) - (seriesSpace / 2));
pDC->MoveTo(tickXLocation,yApexPoint - 75);
pDC->LineTo(tickXLocation,yApexPoint + 75);
//draw tick label
CString tickLabel;
tickLabel = tmpSeries->GetLabel();
CFont sideFont2;
sideFont2.CreateFont(xTickFontSize * 20, 0, ((360 - xAxisAlign) * 10), 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
pOldFont = (CFont*) pDC->SelectObject(&sideFont2);
if(!xAxisAlign) //horizontal
pDC->TextOut(tickXLocation - ((tickLabel.GetLength() / 2) * (xTickFontSize * 10)), yApexPoint - 160, tickLabel);
else
{
if(xAxisAlign < 180)
pDC->TextOut(tickXLocation - ((xTickFontSize * 20) / 2), yApexPoint - (xTickFontSize * 20) - (xAxisLabelLength * ((xTickFontSize * 20) / 2)), tickLabel);
else
pDC->TextOut(tickXLocation + ((xTickFontSize * 20) / 2), yApexPoint - 160, tickLabel);
}
pDC->SelectObject(pOldFont);
}
}
void CGraph::PrintSeries(CDC *pDC)
{
int barWidth;
int dataPlotSize; //used to plot rects of data
int barL, barT, barR, barB;
int tickXLocation;
int seriesSpace;
double barHeight; //for scalability
POSITION pos;
CGraphSeries* tmpSeries;
if(graphType == 0) //bar
{
//determine width of barchart data blocks
if(graphHasLegend)
seriesSpace = (xAxisWidth - legendWidth - 10) / graphSeries->GetCount();
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
barWidth = (seriesSpace * .6) / seriesSize;
dataPlotSize = seriesSize * barWidth;
pos = graphSeries->GetHeadPosition();
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
double tickScale = 0.00;
if(tickRange > yAxisHeight)
tickScale = ((yAxisHeight * 1.00) / (tickRange * 1.00)) * (tickSpace * 20);
else tickScale = tickSpace * 15;
tickXLocation = xApexPoint + ((x * seriesSpace) - (seriesSpace / 2));
for(int s = 0; s < seriesSize; s++)
{
barHeight = 0.00;
int axisHeight = tickScale * (tickRange / tickSpace);
double barPercent = 0.00;
barPercent = (tmpSeries->GetData(s) * 1.00) / (tickRange * 1.00);
barHeight = barPercent * axisHeight;
barL = tickXLocation - (dataPlotSize / 2) + (s * barWidth);
barT = yApexPoint + barHeight;
barR = barL + barWidth;
barB = yApexPoint;
COLORREF barColor;
barColor = GetColor(s);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
pDC->Rectangle(barL, barT, barR, barB);
pDC->SelectObject(pOldBrush);
}
}
}
if(graphType == 1) //line
{
int lastXLoc, lastYLoc;
for(int s = 0; s < seriesSize; s++)
{
//determine width of barchart data blocks
if(graphHasLegend)
seriesSpace = (xAxisWidth - legendWidth - 10) / graphSeries->GetCount();
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
barWidth = (seriesSpace * .6) / seriesSize;
dataPlotSize = seriesSize * barWidth;
pos = graphSeries->GetHeadPosition();
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
tickXLocation = xApexPoint + ((x * seriesSpace) - (seriesSpace / 2));
barHeight = 0.00;
//to allow scalability (height may be less than tickRange)
double dataScale = 0.00;
if(tickRange > yAxisHeight)
dataScale = ((yAxisHeight * 1.00) / (tickRange * 1.00)) * (tickSpace * 20);
else dataScale = tickSpace * 15.00;
int axisHeight = dataScale * (tickRange / tickSpace);
double barPercent = 0.00;
barPercent = (tmpSeries->GetData(s) * 1.00) / (tickRange * 1.00);
barHeight = barPercent * axisHeight;
int yDataLocation = yApexPoint + barHeight;
//now have x and y location of center of ellipse
COLORREF barColor;
barColor = GetColor(s);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
//draw line back to last data member
if(x > 1)
{
CPen* pOldPen;
CPen linePen (PS_SOLID, 1, barColor);
pOldPen = pDC->SelectObject(&linePen);
pDC->MoveTo(lastXLoc/* - 40*/, lastYLoc/* + 20*/);
pDC->LineTo(tickXLocation/* + 60*/, yDataLocation/* + 20*/);
pDC->SelectObject(pOldPen);
}
//now draw ellipse...
pDC->Ellipse(tickXLocation + 60, yDataLocation + 60,
tickXLocation - 60, yDataLocation - 60);
lastXLoc = tickXLocation;
lastYLoc = yDataLocation;
pDC->SelectObject(pOldBrush);
}
}
}
if(graphType == 2) //pie
{
double dataSum = 0.00; //for storing cumulative sum
int lastXLocation, lastYLocation;
int newXLocation, newYLocation;
double percent = 0.00;
int degrees;
double totalSum = 0.00;
int deltaXY;
int radius;
lastXLocation = 0;
lastYLocation = 0;
//determine width of pie display area
if(graphHasLegend)
if((xAxisWidth / graphSeries->GetCount())
> (yAxisHeight - 200))
seriesSpace = (yAxisHeight - 200)/* / graphSeries->GetCount()*/;
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
else
if(xAxisWidth > yAxisHeight)
seriesSpace = yAxisHeight / graphSeries->GetCount();
else
seriesSpace = xAxisWidth / graphSeries->GetCount();
double tmpD = (seriesSpace - 100) * .9; //max width of any pie
radius = tmpD / 2;
int centerYPie = pGraphT - (yAxisHeight / 2) - 300;
pos = graphSeries->GetHeadPosition();
for(int x = 1; x <= graphSeries->GetCount(); x++)
{
tmpSeries = (CGraphSeries*)graphSeries->GetNext(pos);
totalSum = 0;
for(int s = 0; s < 10; s++)
totalSum += tmpSeries->GetData(s);
int pieLeft, pieRight;
if(graphSeries->GetCount() == 1)
{
pieLeft = ((xAxisWidth - 200) / 2) - radius;
}
else
{
pieLeft = pGraphL + 15 + (x * 200) + ((x - 1) * (2 * radius));
}
pieRight = pieLeft + (2 * radius);
CRect pieRect (pieLeft,
centerYPie + radius,
pieRight,
centerYPie - radius);
int centerXPie = pieLeft + radius;
CFont pieFont;
pieFont.CreateFont(xTickFontSize * 20, 0, 0, 0, 700, FALSE, FALSE, 0,
ANSI_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN,"Arial");
CFont* pOldFont = (CFont*) pDC->SelectObject(&pieFont);
//plot series label
pDC->TextOut(centerXPie - ((tmpSeries->GetLabel().GetLength() / 2) * ((xTickFontSize / 2) * 20)),
centerYPie - radius - 300, tmpSeries->GetLabel());
pDC->SelectObject(pOldFont);
lastXLocation = pieLeft;
lastYLocation = centerYPie;
dataSum = 0;
for(s = 0; s < seriesSize; s++)
{
if(tmpSeries->GetData(s) > 0)
{
dataSum += tmpSeries->GetData(s);
percent = (dataSum * 100) / totalSum;
degrees = (360 * percent) / 100;
//degress / 90 will never exceed 4.
//this can tell us the quadrant of destination
deltaXY = (degrees * radius) / 90;
//deltaXY is change from start point of pie 0
//this value is total change. so if radius is 300
//and degrees is 270, delta is 300. The change
//would move both x and y 300 pixels. For x, 100
//to right is center, another 100 to right edge,
//100 back to center. For y, 100 to bottom, 100
//back to center, 100 to top. thus gives 270 degree
//rotation.
//determine destination quadrant...
//and set newXLocation and newYLocation values...
int quadrant = degrees / 90; //truncates decimal
switch(quadrant)
{
//in the computations below, the remarked line is
//the original computation. The line above it, for
//actual use, is the simplified line, and gives the
//exact same result
case 0 : newXLocation = pieLeft + deltaXY;
newYLocation = centerYPie - deltaXY;
break;
case 1 : newXLocation = pieLeft + deltaXY;
newYLocation = centerYPie - (2 * radius) + deltaXY;
break;
case 2 : newXLocation = pieLeft + (4 * radius) - deltaXY;
newYLocation = centerYPie - (2 * radius) + deltaXY;
break;
case 3 : newXLocation = pieLeft + (4 * radius) - deltaXY;
newYLocation = centerYPie + (4 * radius) - deltaXY;
break;
case 4 : newXLocation = pieLeft;
newYLocation = centerYPie + 1;
break;
}
if(s == 0)
lastYLocation -= 1;
CPoint p1 (lastXLocation, lastYLocation);
CPoint p2 (newXLocation, newYLocation);
COLORREF barColor;
barColor = GetColor(s);
CBrush brush (barColor);
CBrush* pOldBrush;
pOldBrush = pDC->SelectObject(&brush);
pDC->Pie(pieRect, p1, p2);
pDC->SelectObject(pOldBrush);
lastXLocation = newXLocation;
lastYLocation = newYLocation;
}
}
}
}
}
void CGraph::SetMargins(int top, int bottom, int left, int right, int graphTop)
{
//page margins for portrait or landscape distinction
topMargin = top;
bottomMargin = bottom;
leftMargin = left;
rightMargin = right;
//set up rectangle area for showing the graph
pGraphL = leftMargin;
pGraphT = graphTop;
pGraphB = pGraphT - 7200;
pGraphR = rightMargin;
if(pGraphB < bottomMargin)
pGraphB = bottomMargin;
}