klineobject.cpp

我做的一个简单的读取*.day股票历史数据的显示成KLine的小例子。

// KLineObject.cpp : 实现文件
//

#include "stdafx.h"
#include "KLine.h"
#include "KLineObject.h"
#include ".\klineobject.h"


// CKLineObject

IMPLEMENT_DYNAMIC(CKLineObject, CWnd)
CKLineObject::CKLineObject()
: m_GraphFillType(0)
{
	m_GraphDC = NULL;
	m_GraphBitmap = NULL;

	m_GradientDC = NULL;
	m_GradientBitmap = NULL;

	m_GraphGradientColor1 = RGB(0,0,64);
	m_GraphGradientColor2 = RGB(0,0,216);

	m_GraphFillType = GB_SOLID;
}

CKLineObject::~CKLineObject()
{
	delete m_2DKLineGraph;
	m_2DKLineGraph = NULL;

	// Delete graph DC and bitmap
	m_GraphDC->DeleteDC();
	delete m_GraphDC;
	m_GraphDC = NULL;

	m_GraphBitmap->DeleteObject();
	delete m_GraphBitmap;
	m_GraphBitmap = NULL;

	// Delete gradient DC and bitmap
	m_GradientDC->DeleteDC();
	delete m_GradientDC;
	m_GradientDC = NULL;

	m_GradientBitmap->DeleteObject();
	delete m_GradientBitmap;
	m_GradientBitmap = NULL;

}


BEGIN_MESSAGE_MAP(CKLineObject, CWnd)
	ON_WM_PAINT()
//	ON_WM_SIZE()
END_MESSAGE_MAP()



// CKLineObject 消息处理程序

BOOL CKLineObject::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext)
{
	CRect rectGraph( rect);

	m_Position = CPoint(rectGraph.left,rectGraph.top);
	m_Size = CSize(rectGraph.right,rectGraph.bottom);

	m_GraphBackgroundColor = RGB(0,0,0);
	m_GraphRedLineColor = RGB(255,0,0);
	m_GraphGreenLineColor = RGB(0,255,255);

	return CWnd::Create(lpszClassName, lpszWindowName, WS_CHILD | WS_VISIBLE | WS_BORDER | WS_CLIPSIBLINGS, rectGraph, pParentWnd, nID, pContext);
}


void CKLineObject::CreateGraph(int g_type)
{
	switch(g_type)
	{
	case GT_2DKLINE:
		m_2DKLineGraph = new C2DKLineGraph(m_Size);
		break;
	}

	CDC* pDC = GetDC();

	m_GraphDC = new CDC();
	m_GraphDC->CreateCompatibleDC(pDC);
	m_GraphBitmap = new CBitmap();
	m_GraphBitmap->CreateCompatibleBitmap(pDC,m_Size.cx,m_Size.cy);
	m_GraphDC->SelectObject(m_GraphBitmap);

	m_GradientDC = new CDC();
	m_GradientDC->CreateCompatibleDC(pDC);
	m_GradientBitmap = new CBitmap();
	m_GradientBitmap->CreateCompatibleBitmap(pDC,m_Size.cx,m_Size.cy);
	m_GradientDC->SelectObject(m_GradientBitmap);

	GRADIENT_RECT gRect;
	TRIVERTEX gVert[2];

	gVert[0].x = 0;
	gVert[0].y = 0;
	gVert[0].Red = (GetRValue(m_GraphGradientColor1)<<8);
	gVert[0].Green = (GetGValue(m_GraphGradientColor1)<<8);
	gVert[0].Blue = (GetBValue(m_GraphGradientColor1)<<8);
	gVert[0].Alpha = 0x0000;

	gVert[1].x = m_Size.cx;
	gVert[1].y = m_Size.cy;
	gVert[1].Red = (GetRValue(m_GraphGradientColor2)<<8);
	gVert[1].Green = (GetGValue(m_GraphGradientColor2)<<8);
	gVert[1].Blue = (GetBValue(m_GraphGradientColor2)<<8);
	gVert[1].Alpha = 0x0000;

	gRect.UpperLeft = 0;
	gRect.LowerRight = 1;
	GradientFill(m_GradientDC->m_hDC,gVert,2,&gRect,1,GRADIENT_FILL_RECT_V);

	CWnd::ReleaseDC(pDC);
}

void CKLineObject::OnPaint()
{
	CPaintDC dc(this); // device context for painting

	CDC * pDC = GetDC();

	CRect gRect;
	this->GetClientRect(gRect);


	CBrush bgBrush(m_GraphBackgroundColor);
	pDC->SelectObject(bgBrush);
	FillRect(pDC->m_hDC,&gRect,bgBrush);

	//Begin BuildGraph
	m_2DKLineGraph->SetGraphSize(CSize(gRect.Width(),gRect.Height()));
	m_2DKLineGraph->CreateGraph(pDC);
	//End BuildGraph

	pDC->SelectObject(bgBrush);

	CWnd::ReleaseDC(pDC);
}


void CKLineObject::SetGraphFillType(int g_fill)
{
	switch(g_fill)
	{
	case GB_SOLID:
		m_GraphFillType = GB_SOLID;
		break;
	case GB_GRADIENT:
		m_GraphFillType = GB_GRADIENT;
		break;
	default:
		m_GraphFillType = GB_SOLID;
		break;
	}
}


int CKLineObject::GetGraphFillType()
{
	return m_GraphFillType;
}

void CKLineObject::SetC2DKLineGraphValue(__time64_t t, double startvalue, double maxvalue, double minvalue, double endvalue)
{
	if (m_2DKLineGraph!=NULL)
	{
		m_2DKLineGraph->SetValue(t,startvalue,maxvalue,minvalue,endvalue);
	}
}