block.cpp

VC做的矢量画图程序！

// BlockDialog.cpp : implementation file
//

#include "stdafx.h"
#include "draw.h"
#include "drawdoc.h"
#include "drawview.h"
#include "Block.h"
#include "tag.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// BlockDialog dialog
extern int	nCharHeight,nCharWidth;
extern CDrawView *p_View;

//类的构造函数
//参数：pDoc-指向当前文档对象的指针；
//		BlockIndex-当前选择的图形块的序号；
//		bModify-识别是否能够在对话框中修改图形块1-正常操作0-只能从对话框中选择图形块
BlockDialog::BlockDialog(CDrawDoc* p_Doc,int BlockIndex,BOOL bModify,CWnd* pParent /*=NULL*/)
	: CDialog(BlockDialog::IDD, pParent)
{
	pDoc=p_Doc;
	int nn=pDoc->GetBlockUpperbound();
	n_Block=0;
	m_BlockIndex=BlockIndex;
	m_bModify=bModify;
	m_BlockIndex1=-1;
	for(int i=0;i<nn;i++)	//得到各个图形块在对象数组中存储的序号
	{
		if(pDoc->GetBlock(i))
		{
			if(m_BlockIndex==i)	
				m_BlockIndex1=n_Block;	//得到选中的图例的序号
			Index[n_Block++]=i;
		}
	}
	//{{AFX_DATA_INIT(BlockDialog)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void BlockDialog::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(BlockDialog)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

//设置对话框中按钮的状态
void BlockDialog::OnUpdate1(CCmdUI* pCmdUI)
{
	if(m_bModify&&m_BlockIndex1>=0)		//如果能够修改图形块并且选中了图形块
		pCmdUI->Enable(TRUE);
 	else								//如果没有选中图形块或者不能进行修改操作
		pCmdUI->Enable(FALSE);
}      

//制作新图形块
void BlockDialog::OnBlockNew()
{
	map.DeleteObject();		//删除存储的图象
	m_BlockIndex=Index[m_BlockIndex1];
	EndDialog(ID_BLOCK_NEW);
}

//修改既有图形块
void BlockDialog::OnBlockModify()
{
	map.DeleteObject();
	m_BlockIndex=Index[m_BlockIndex1];
	EndDialog(IDD_BLOCK_MODIFY);
}  

//对话框的绘制函数，绘制对话框中的各个图形块
void BlockDialog::draw()
{
	int i;
	CPaintDC ddd(this);
	CPen pen(0,1,RGB(255,128,0));
	CPen *pOldPen;
	pOldPen=ddd.SelectObject(&pen);
	ddd.SetBkMode(TRANSPARENT);
	ddd.SetROP2(R2_COPYPEN);
	POINT bc1[4];
	if(b_DrawAllBlock==1||b_DrawSelectBlock==1)
	{
		bc1[0].x=-2;
		bc1[0].y=-2;
		bc1[1].x=rectwidth*10;
		bc1[1].y=-2;
		bc1[2].x=rectwidth*10;
		bc1[2].y=rectheight*10;
		bc1[3].x=-2;
		bc1[3].y=rectheight*10;
		for(i=0;i<6;i++)	//绘制各个对话框中的方格
		{
			ddd.MoveTo((i+1)*rectwidth,0);
			ddd.LineTo((i+1)*rectwidth,6*rectheight);
			ddd.MoveTo(0,(i+1)*rectheight);
			ddd.LineTo(rectwidth*6,(i+1)*rectheight);
		}
	}
	ddd.SelectObject(pOldPen);
	draw1();				//绘制各个图形块
}

//绘制图形块
void BlockDialog::draw1()
{
	int i,i1,i2;
	CClientDC ddd(this);
	if(b_DrawAllBlock==1)	//如果绘制所有的图形块
	{
		SetCapture();
		SetCursor(LoadCursor(NULL,IDC_WAIT));
		for(i=0;i<n_Block;i++)	//绘制各个图形块
		{
			i1=(i-1)/10;
			i2=i-i1*10;
			pDoc->GetBlock(Index[i])->Draw1(&ddd,i2*rectwidth,i1*rectheight,rectwidth,rectheight,rectheight*10,0,0);
		}
		SetCursor(LoadCursor(NULL,IDC_ARROW));
		ReleaseCapture();
		b_DrawAllBlock=0;
	}
	if(m_BlockIndex1>=0)	//反色显示选中的图形块
	{
		i1=m_BlockIndex1/10;
		i2=m_BlockIndex1-i1*10;
		r1.top=i1*rectheight;
		r1.bottom=i1*rectheight+rectheight;
		r1.left=i2*rectwidth;
		r1.right=i2*rectwidth+rectwidth;
		ddd.InvertRect(r1);
	}
}

/*void BlockDialog::OnBlockDelete()	//删除图例快
{
//	暂不进行删除图形块操作
}*/

//保存对图形块的选择退出对话框
void BlockDialog::OnOk()
{
	map.DeleteObject();
	m_BlockIndex=Index[m_BlockIndex1];
	EndDialog(IDOK);
}

//放弃退出对话框
void BlockDialog::OnCancel()
{
	map.DeleteObject();
	EndDialog(IDCANCEL);
}

//
void BlockDialog::InitNamesLst()
{
	b_DrawAllBlock=1;
	if(m_BlockIndex1>=0)
		b_DrawSelectBlock=1;
	else
	    b_DrawSelectBlock=0;
	UpdateDialogControls(this,TRUE);
}

//初始化函数
BOOL BlockDialog::OnInitDialog()
{
	CClientDC ddd(this);
	CRgn rgn;
	int i;
	CButton* pbut;
	//以下设置对话框中各按钮的状态
	pbut=(CButton *)GetDlgItem(IDD_BLOCK_NEW);
	pbut->EnableWindow(m_bModify);
	//pbut=(CButton *)GetDlgItem(IDD_BLOCK_DELETE);
	pbut->EnableWindow(m_bModify);
	pbut=(CButton *)GetDlgItem(IDD_BLOCK_MODIFY);
	pbut->EnableWindow(m_bModify);

	rectwidth=40*nCharWidth/7;		//得到每个方格的宽度
	rectheight=40*nCharHeight/16;	//得到每个方格的高度
	POINT bb[4];
	b_RestoreBmp=0;
	bb[0].x=0;
	bb[0].y=0;
	bb[1].x=0;
	bb[1].y=rectheight*10-1;
	bb[2].x=rectwidth*10-1;
	bb[2].y=rectheight*10-1;
	bb[3].x=rectwidth*10-1;
	bb[3].y=0;
	rgn.CreatePolygonRgn(bb,4,0);	
	//以下创建一个位图对象，用来把显示图形块的区域保存（用来在全屏显示一个图形块后，快速恢复屏幕）
	i=map.CreateCompatibleBitmap(&ddd,rectwidth*10,rectheight*10);
	if(i!=0)
	{
	    b_RestoreBmp=1;
		pDc.CreateCompatibleDC(&ddd);
		pDc.SelectObject(&map);
	}
	InitNamesLst();
	return TRUE;
}

//按下鼠标左键的消息处理函数
void BlockDialog::OnLButtonDown(UINT nFlags,CPoint point)
{
	int i,j,ii;
	int OldIndex;
	CClientDC ddd(this);
	r1.left=0;
	r1.bottom=0;
	r1.right=rectwidth*10;
	r1.top=rectheight*10;
	if(point.x>rectwidth*10||point.x<0||point.y<0||point.y>rectheight*10)
		return;
	if(b_DrawZoom==1)	//如果当前屏幕上正在全屏显示一个图形块
	{
		b_DrawZoom=0;
		b_DrawAllBlock=1;
		b_DrawSelectBlock=0;
		if(b_RestoreBmp==1)	//如果原来的屏幕存在位图对象中
			ddd.StretchBlt(0,0,rectwidth*10,rectheight*10,&pDc,0,0,rectwidth*10,rectheight*10,SRCCOPY);
		else				//否则，重画视图
			Invalidate();
		return;
	}
	i=point.y/rectheight*10+point.x/rectwidth;
	if(i>=n_Block)
		return;
	if(i==m_BlockIndex1)	//如果点中的是已经点中的图形块，则全屏显示这个图形块
	{
		b_DrawZoom=1;
		b_DrawSelectBlock=0;
		b_DrawAllBlock=0;
		if(b_RestoreBmp==1)
			pDc.BitBlt(0,0,rectwidth*10,rectheight*10,&ddd,0,0,SRCCOPY);
		ddd.PatBlt(0,0,rectwidth*10,rectheight*10,0);
		pDoc->GetBlock(Index[i])->Draw1(&ddd,0,0,10*rectwidth,10*rectheight,rectheight*10,0,0);
	}
	else	 //点中的是另外一个图形块
	{
		//
		OldIndex=m_BlockIndex1;
		//以下将点中的图形块反色显示
		m_BlockIndex1=i;
		b_DrawSelectBlock=1;
		b_DrawAllBlock=0;
		b_DrawZoom=0;
		j=(i)/10;
		ii=i-j*10;
		r1.top=j*rectheight;
		r1.bottom=j*rectheight+rectheight;
		r1.left=ii*rectwidth;
		r1.right=ii*rectwidth+rectwidth;
		ddd.InvertRect(r1);
		if(OldIndex>=0)	//以下将原来点中的图形块反色显示（去掉原来的反色显示）
		{
			j=(OldIndex)/10;
			ii=OldIndex-j*10;
			r1.top=j*rectheight;
			r1.bottom=j*rectheight+rectheight;
			r1.left=ii*rectwidth;
			r1.right=ii*rectwidth+rectwidth;
			ddd.InvertRect(r1);
		}
	}
	UpdateDialogControls(this,TRUE);
}


BEGIN_MESSAGE_MAP(BlockDialog, CDialog)
	//{{AFX_MSG_MAP(BlockDialog)
	//ON_UPDATE_COMMAND_UI(ID_BLOCK_DELETE,OnUpdate1)
	ON_UPDATE_COMMAND_UI(IDD_BLOCK_MODIFY,OnUpdate1) 
	ON_BN_CLICKED(IDOK,OnOk)
	ON_BN_CLICKED(IDCANCEL,OnCancel)
	ON_BN_CLICKED(IDD_BLOCK_NEW,OnBlockNew)
//	ON_BN_CLICKED(IDD_BLOCK_DELETE,OnBlockDelete)
	ON_BN_CLICKED(IDD_BLOCK_MODIFY,OnBlockModify)
	ON_WM_PAINT()
	ON_WM_LBUTTONDOWN()
		// NOTE: the ClassWizard will add message map macros here
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// BlockDialog message handlers