GradientProgressCtrl.rar_GradientProgressCtrl_渐变色 进度条

// GradientProgressCtrl.cpp : implementation file // #include "stdafx.h" #include "GradientProgressCtrl.h" #include "MemDC.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CGradientProgressCtrl CGradientProgressCtrl::CGradientProgressCtrl() { int i; m_dwStyle = GPBS_HORIZONTAL; for(i=0; i<GPBS_MAXDETAIL; i++){ m_bDetail[i] = FALSE; } m_nLower=0; m_nUpper=100; m_nCurrentPosition=0; m_nStep=10; //Initial Color of show m_clrStart= COLORREF(RGB(255,0,0)); m_clrEnd= COLORREF(RGB(0,0,255)); m_clrBkGround=::GetSysColor(COLOR_3DFACE); m_clrText=COLORREF(RGB(255,255,255)); //Not show Word m_bShowPercent=FALSE; } CGradientProgressCtrl::~CGradientProgressCtrl() { } BEGIN_MESSAGE_MAP(CGradientProgressCtrl, CProgressCtrl) //{{AFX_MSG_MAP(CGradientProgressCtrl) ON_WM_ERASEBKGND() ON_WM_PAINT() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CGradientProgressCtrl message handlers void CGradientProgressCtrl::SetRange(int nLower,int nUpper) { //This Function is to Set Range of the progress m_nLower=nLower; m_nUpper=nUpper; if (m_dwStyle == GPBS_DETAIL) { m_nLower = 0; if (m_nUpper>GPBS_MAXDETAIL) { m_nUpper = GPBS_MAXDETAIL; } } m_nCurrentPosition=nLower; CProgressCtrl::SetRange(nLower,nUpper); } int CGradientProgressCtrl::SetStep(int nStep) { m_nStep=nStep; return (CProgressCtrl::SetStep(nStep)); } BOOL CGradientProgressCtrl::OnEraseBkgnd(CDC* pDC) { // TODO: Add your message handler code here and/or call default return TRUE;//CProgressCtrl::OnEraseBkgnd(pDC); } void CGradientProgressCtrl::DrawGradient(CPaintDC *pDC, const RECT &rectClient, const int &nMaxWidth) { RECT rectFill; //显示区域 float fStep; //每一步的幅宽 CBrush brush; //显示的颜色画刷 CMemDC memDC(pDC); int r,g,b; float rStep,gStep,bStep; //得到不同颜色并相减，返回颜色之间的最大差值 r=(GetRValue(m_clrEnd)-GetRValue(m_clrStart)); g=(GetGValue(m_clrEnd)-GetGValue(m_clrStart)); b=(GetBValue(m_clrEnd)-GetBValue(m_clrStart)); //使进程条显示的总数 等于最大的颜色差值 int nSteps=max(abs(r),max(abs(g),abs(b))); //确定每一颜色填充多大的矩形区域 fStep=(float)rectClient.right/(float)nSteps; //设置每一颜色填充的步数 rStep=r/(float)nSteps; gStep=g/(float)nSteps; bStep=b/(float)nSteps; r=GetRValue(m_clrStart); g=GetGValue(m_clrStart); b=GetBValue(m_clrStart); //绘制颜色渐变的进程条 for(int iOnBand=0;iOnBand<nSteps;iOnBand++) { ::SetRect(&rectFill, //以下为填充矩形区域的左上角x,y和右下角x,y (int)(iOnBand*fStep), 0, (int)((iOnBand+1)*fStep), rectClient.bottom+1); VERIFY(brush.CreateSolidBrush(RGB(r+rStep*iOnBand,g+gStep*iOnBand,b+bStep*iOnBand))); memDC.FillRect(&rectFill,&brush); VERIFY(brush.DeleteObject()); //在结束绘制之前，使用背景色填充乘下的的客户区域 if(rectFill.right>nMaxWidth) { ::SetRect(&rectFill,rectFill.right,0,rectClient.right,rectClient.bottom); VERIFY(brush.CreateSolidBrush(m_clrBkGround)); memDC.FillRect(&rectFill,&brush); VERIFY(brush.DeleteObject()); return; } } } void CGradientProgressCtrl::DrawGradientVertical(CPaintDC *pDC,const RECT& rectClient,const int & nMaxWidth) { RECT rectFill; //显示区域 float fStep; //每一步的幅宽 CBrush brush; //显示的颜色画刷 CMemDC memDC(pDC); int r,g,b; float rStep,gStep,bStep; //得到不同颜色并相减，返回颜色之间的最大差值 r=(GetRValue(m_clrEnd)-GetRValue(m_clrStart)); g=(GetGValue(m_clrEnd)-GetGValue(m_clrStart)); b=(GetBValue(m_clrEnd)-GetBValue(m_clrStart)); //使进程条显示的总数 等于最大的颜色差值 int nSteps=max(abs(r),max(abs(g),abs(b))); //确定每一颜色填充多大的矩形区域 fStep=(float)rectClient.bottom/(float)nSteps; //设置每一颜色填充的步数 rStep=r/(float)nSteps; gStep=g/(float)nSteps; bStep=b/(float)nSteps; r=GetRValue(m_clrStart); g=GetGValue(m_clrStart); b=GetBValue(m_clrStart); //绘制颜色渐变的进程条 for(int iOnBand=0;iOnBand<nSteps;iOnBand++) { ::SetRect(&rectFill, //以下为填充矩形区域的左上角x,y和右下角x,y 0, rectClient.bottom - (int)((iOnBand+1)*fStep), rectClient.right, rectClient.bottom - (int)(iOnBand*fStep) ); VERIFY(brush.CreateSolidBrush(RGB(r+rStep*iOnBand,g+gStep*iOnBand,b+bStep*iOnBand))); memDC.FillRect(&rectFill,&brush); VERIFY(brush.DeleteObject()); //在结束绘制之前，使用背景色填充乘下的的客户区域 if((rectClient.bottom - rectFill.top) >nMaxWidth) { ::SetRect(&rectFill,rectClient.left,rectClient.top,rectFill.left,rectFill.top); VERIFY(brush.CreateSolidBrush(m_clrBkGround)); memDC.FillRect(&rectFill,&brush); VERIFY(brush.DeleteObject()); break; } } VERIFY(brush.CreateSolidBrush(m_clrEnd)); ::SetRect(&rectFill,rectClient.left+1,rectClient.bottom/2,rectClient.right-1,rectClient.bottom/2+1); memDC.FillRect(&rectFill,&brush); VERIFY(brush.DeleteObject()); return; } void CGradientProgressCtrl::DrawGradientDetail(CPaintDC *pDC, const RECT &rectClient) { RECT rectFill; //显示区域 float fStep; //每一步的幅宽 CBrush brush; //显示的颜色画刷 CMemDC memDC(pDC); int nSteps; //使进程条显示的总数 等于元素数 nSteps=m_nUpper; //确定每一颜色填充多大的矩形区域 fStep=(float)rectClient.right/(float)nSteps; //绘制细节进程条 for(int iOnBand=0;iOnBand<nSteps;iOnBand++) { ::SetRect(&rectFill, //以下为填充矩形区域的左上角x,y和右下角x,y (int)(iOnBand*fStep),0,(int)((iOnBand+1)*fStep),rectClient.bottom ); if (iOnBand == m_nCurrentPosition) { //使用背景色填充当前位值元素区域 VERIFY(brush.CreateSolidBrush(m_clrBkGround)); }else if (m_bDetail[iOnBand]) { VERIFY(brush.CreateSolidBrush(m_clrStart)); }else { VERIFY(brush.CreateSolidBrush(m_clrEnd)); } memDC.FillRect(&rectFill,&brush); VERIFY(brush.DeleteObject()); } return; } void CGradientProgressCtrl::OnPaint() { float maxWidth; CPaintDC dc(this); // device context for painting // TODO: Add your message handler code here if(m_nCurrentPosition<m_nLower||m_nCurrentPosition>m_nUpper || m_nUpper<= m_nLower) { CRect rect; GetClientRect(rect); CBrush brush; brush.CreateSolidBrush(::GetSysColor(COLOR_3DFACE)); dc.FillRect(&rect,&brush); VERIFY(brush.DeleteObject()); return; } CRect rectClient; GetClientRect(rectClient); switch(m_dwStyle) { case GPBS_VERTICAL: maxWidth = ((float)m_nCurrentPosition/(float)(m_nUpper-m_nLower)*(float)rectClient.bottom); //绘制 DrawGradientVertical(&dc,rectClient,(int)maxWidth); break; case GPBS_HORIZONTAL: maxWidth = ((float)m_nCurrentPosition/(float)(m_nUpper-m_nLower)*(float)rectClient.right); //绘制 DrawGradient(&dc,rectClient,(int)maxWidth); break; case GPBS_DETAIL: DrawGradientDetail(&dc,rectClient); break; default: ; } //显示进程条进度文字 if(m_bShowPercent) { CString percent; percent.Format("%d%%",(int)(100*(float)m_nCurrentPosition/m_nUpper)); dc.SetTextColor(m_clrText); dc.SetBkMode(TRANSPARENT); dc.DrawText(percent,&rectClient,DT_VCENTER|DT_CENTER|DT_SINGLELINE); percent.Empty(); } // Do not call CProgressCtrl::OnPaint() for painting messages } int CGradientProgressCtrl::SetPos(int nPos) { //Set the Position of the Progress m_nCurrentPosition=nPos; return (CProgressCtrl::SetPos(nPos)); } int CGradientProgressCtrl::SetStyle(DWORD style) { switch(style) { case GPBS_HORIZONTAL: m_dwStyle = style; break; case GPBS_VERTICAL: m_dwStyle = style; break; case GPBS_DETAIL: m_dwStyle = style; m_nStep=1; break; default: return -1; break; } return style; } int CGradientProgressCtrl::SetDet