polybar.cpp

软件参考Windows操作系统下的画图程序

// PolyBar.cpp : implementation file
//

#include "stdafx.h"
#include "Drawing.h"
#include "PolyBar.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CPolyBar

CPolyBar::CPolyBar()
{
	m_nPick = m_nOldPick = 0;
	m_nPickMode = 0;
	m_nWidth = 1;
}

CPolyBar::~CPolyBar()
{
}


BEGIN_MESSAGE_MAP(CPolyBar, CToolBar)
	//{{AFX_MSG_MAP(CPolyBar)
	ON_WM_PAINT()
	ON_WM_LBUTTONUP()
	ON_COMMAND(ID_WIDTH_1, OnWidth1)
	ON_COMMAND(ID_WIDTH_2, OnWidth2)
	ON_COMMAND(ID_WIDTH_3, OnWidth3)
	ON_COMMAND(ID_MODE_1, OnMode1)
	ON_COMMAND(ID_MODE_2, OnMode2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPolyBar message handlers

void CPolyBar::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	//首先确定按纽在此窗口内的矩形,只需要初始化一次,因此设置了静态变量count记数
	static int count = 0;
	if(count == 0)
	{
		count++;
		for(int i=0; i<3; i++)
		{
			m_rect[2*i].SetRect(20, 20+i*33, 20+27, 20+i*33+27);
			m_rect[2*i+1].SetRect(20+27+6, 20+i*33, 20+27+6+27, 20+i*33+27);
		}
	}


	//画出每一个按纽(未按下的状态)
	for(int i=0; i<BtnCount; i++)
	{
		if(m_nPick == i)
			dc.Draw3dRect(m_rect[i], RGB(0, 0, 0), RGB(255, 255, 255));
		else
			dc.Draw3dRect(m_rect[i], RGB(255, 255, 255), RGB(0, 0, 0));

		CRgn rgn;
		CPoint pt[3] = { CPoint(m_rect[i].right-6, m_rect[i].bottom-7),
			CPoint(m_rect[i].right-6, m_rect[i].bottom-2), 
			CPoint(m_rect[i].right-2, m_rect[i].bottom-4) 
		};
		rgn.CreatePolygonRgn(pt, 3, ALTERNATE);	//WINDING
		CBrush bru(RGB(0, 0, 0));
		dc.FillRgn(&rgn, &bru);
		rgn.DeleteObject();
	}

	//在按纽矩形上画出点.直线.矩形.圆.多边形等图元,表示代表什么按纽
	GeoPoint pt(20+27/2, 20+27/2);//点按纽
	pt.SetWidth(2);
	pt.Draw(dc);

	GeoLine line;				  //线按纽
	line.SetTwoPoint(m_rect[1].left+8, m_rect[1].top+8, m_rect[1].right-8, m_rect[1].bottom-8);
	line.SetWidth(2);
	line.Draw(dc);

	GeoRect rect;				  //矩形按纽
	rect.SetTwoPoint(m_rect[2].left+8, m_rect[2].top+8, m_rect[2].right-8, m_rect[2].bottom-8);
	rect.SetWidth(1);
	rect.Draw(dc);

	GeoCircle circle;			  //圆按纽
	circle.SetTwoPoint(m_rect[3].left+8, m_rect[3].top+8, m_rect[3].right-8, m_rect[3].bottom-8);
	circle.SetWidth(1);
	circle.Draw(dc);

	GeoPolygon polygon;			  //多边形按纽
	polygon.AddPoint(CPoint(m_rect[4].left+4, m_rect[4].bottom-4));
	polygon.AddPoint(CPoint(m_rect[4].right-8, m_rect[4].bottom-4));
	polygon.AddPoint(CPoint(m_rect[4].right-4, m_rect[4].bottom-12));
	polygon.AddPoint(CPoint(m_rect[4].right-12, m_rect[4].bottom-12));
	polygon.AddPoint(CPoint(m_rect[4].right-8, m_rect[4].top+4));
	polygon.AddPoint(CPoint(m_rect[4].right-16, m_rect[4].top+4));
	polygon.SetClose();
	polygon.SetWidth(1);
	polygon.Draw(dc);

	//第6个本打算写字用,限于时间,省略了...
	dc.SetTextColor(RGB(255, 0, 0));
	dc.SetBkMode(TRANSPARENT);
	dc.TextOut(m_rect[5].left+4, m_rect[5].top+5, "NO");

	// Do not call CToolBar::OnPaint() for painting messages
}

//当鼠标在按纽上点击后释放的消息处理
void CPolyBar::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	for(int i=0; i<BtnCount; i++)
	{
		//判断鼠标电击的点在哪个矩形按纽内
		if(m_rect[i].PtInRect(point))
		{
			CClientDC dc(this);
			if(m_nPick != -1)
				dc.Draw3dRect(&m_rect[m_nPick], RGB(255, 255, 255), RGB(0, 0, 0));
			m_nOldPick = m_nPick;
			m_nPick = i;
			//画出鼠标按下的状态
			dc.Draw3dRect(&m_rect[i], RGB(0, 0, 0), RGB(255, 255, 255));
			//然后弹出popmenu
			CPoint pt(m_rect[i].right, m_rect[i].bottom);
			ClientToScreen(&pt);
			CMenu menu;
			menu.LoadMenu(IDR_POPMENU);//载取popmenu
			if(i==5)//写字
			{
				menu.GetSubMenu(0)->GetSubMenu(1)->TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON, pt.x, pt.y, this, NULL); 
				menu.DestroyMenu();
				break;
			}
			if(i==0 || i==1)
			{
				menu.GetSubMenu(0)->GetSubMenu(0)->TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON, pt.x, pt.y, this, NULL); 
				menu.DestroyMenu();
				break;
			}
			menu.GetSubMenu(0)->TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON, pt.x, pt.y, this, NULL); 
			menu.DestroyMenu();
			break;
		}
	}
	CToolBar::OnLButtonUp(nFlags, point);
}

//宽度及模式的选择消息
void CPolyBar::OnWidth1() 
{
	// TODO: Add your command handler code here
	m_nWidth = 1;
}

void CPolyBar::OnWidth2() 
{
	// TODO: Add your command handler code here
	m_nWidth = 2;	
}

void CPolyBar::OnWidth3() 
{
	// TODO: Add your command handler code here
	m_nWidth = 3;
}

void CPolyBar::OnMode1() 
{
	// TODO: Add your command handler code here
	m_nPickMode = 0;
}

void CPolyBar::OnMode2() 
{
	// TODO: Add your command handler code here
	m_nPickMode = 1;
}