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#include "CPieChartView.h"
#include "T2Archive.h"
#include "URect.h"
/*static*/ CPieChartView* CPieChartView::CreateCPieChartViewStream(T2Archive* inStream) {
return new CPieChartView(inStream);
}
CPieChartView::CPieChartView(T2Archive* inStream)
: mPie(NULL)
{
inStream->Read(&mTextTraits, sizeof(mTextTraits));
inStream->Read(&mBorderWidth, sizeof(mBorderWidth));
}
/*virtual*/ CPieChartView::~CPieChartView() {
}
void CPieChartView::DrawSelf() {
double pi = 3.14159265358979;
CRect theFrameRect;
GetClientRect(theFrameRect);
if (!theFrameRect.IsRectEmpty()) {
#line 47
_ASSERT(URect::Width(theFrameRect) == URect::Height(theFrameRect));
int unknownValue = 0; // not used for anything
CWnd *parent = GetParent();
CDC *parentDC = parent->GetDC();
COLORREF theBackColor = parentDC->GetBkColor();
parent->ReleaseDC(parentDC);
CDC *pDC = GetDC();
CPen thePen(PS_SOLID, 1, RGB(0, 0, 0));
CBrush theBrush(theBackColor);
CPen *oldPen = (CPen *) pDC->SelectStockObject(NULL_PEN);
CBrush *oldBrush = pDC->SelectObject(&theBrush);
pDC->Ellipse(theFrameRect);
CRect pieArea = theFrameRect;
pieArea.DeflateRect(mBorderWidth, mBorderWidth);
CPoint center = pieArea.CenterPoint();
if (mPie && mPie->totalValue != 0) {
int i;
int sumOfValue = 0;
CPoint ptStart(center.x, pieArea.top);
for (i = 0; i < mPie->sliceCount; i++) {
if (mPie->slices[i].value == 0)
continue;
sumOfValue += mPie->slices[i].value;
int angleEnd = (sumOfValue * 360) / mPie->totalValue;
CPoint ptEnd = center;
CSize size(
cos((angleEnd * pi) / 180.0),
sin((angleEnd * pi) / 180.0)
);
ptEnd += size;
CBrush brush(mPie->slices[i].color);
pDC->SelectObject(brush);
pDC->Pie(pieArea, ptStart, ptEnd);
ptStart = ptEnd;
}
CSize textExtent = pDC->GetTextExtent("100%", 4);
SIZE maxNumberSize = textExtent;
int percentagePos = (URect::Width(pieArea) - maxNumberSize.cx) / 2;
CPoint anotherCenter = center;
pDC->SetTextColor(RGB(0, 0, 0));
pDC->SetBkMode(TRANSPARENT);
int currAngle = 0;
sumOfValue = 0;
for (i = 0; i < mPie->sliceCount; i++) {
if (mPie->slices[i].value == 0)
continue;
sumOfValue += mPie->slices[i].value;
int endAngle = (sumOfValue * 360) / mPie->totalValue;
int midAngle = (currAngle + endAngle) / 2;
CString str((mPie->slices[i].value * 100) / mPie->totalValue, 1);
str += '%';
CPoint textCenter = center;
CSize sliceSize(
percentagePos * cos((midAngle * pi) / 180.0),
percentagePos * sin((midAngle * pi) / 180.0)
);
textCenter += sliceSize;
CRect drawRect(textCenter.x - maxNumberSize.cx / 2, textCenter.y - maxNumberSize.cy / 2, textCenter.x + maxNumberSize.cx / 2, textCenter.y + maxNumberSize.cy / 2);
pDC->DrawText(str, drawRect, DT_CENTER);
currAngle = endAngle;
}
}
pDC->SelectStockObject(BLACK_PEN);
pDC->SelectStockObject(NULL_BRUSH);
pDC->Ellipse(pieArea);
pDC->SelectObject(oldPen);
pDC->SelectObject(oldBrush);
ReleaseDC(pDC);
}
}
void CPieChartView::CutPie(const Pie* inPie) {
mPie = inPie;
CRect rect;
GetClientRect(rect);
InvalidateRect(rect);
}
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