📄 drawview.cpp
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// The following command handler provides the standard keyboard
// user interface to cancel an in-place editing session. Here,
// the container (not the server) causes the deactivation.
void CDrawView::OnCancelEditCntr()
{
// Close any in-place active item on this view.
COleClientItem* pActiveItem = GetDocument()->GetInPlaceActiveItem(this);
if (pActiveItem != NULL)
{
pActiveItem->Close();
}
ASSERT(GetDocument()->GetInPlaceActiveItem(this) == NULL);
}
// Special handling of OnSetFocus and OnSize are required for a container
// when an object is being edited in-place.
void CDrawView::OnSetFocus(CWnd* pOldWnd)
{
COleClientItem* pActiveItem = GetDocument()->GetInPlaceActiveItem(this);
if (pActiveItem != NULL &&
pActiveItem->GetItemState() == COleClientItem::activeUIState)
{
// need to set focus to this item if it is in the same view
CWnd* pWnd = pActiveItem->GetInPlaceWindow();
if (pWnd != NULL)
{
pWnd->SetFocus(); // don't call the base class
return;
}
}
CView::OnSetFocus(pOldWnd);
}
//当视图的大小变化时被调用，cx,cy为变化后屏幕顶长、宽（像素）
void CDrawView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
CDrawDoc *pDoc=(CDrawDoc *)GetDocument();
p_Screen=pDoc->m_Screen;
m_wScreen=cx;
m_hScreen=cy;
nXPage=m_hScreen/nScrollMin; //横向一屏的滚动范围
nYPage=m_wScreen/nScrollMin; //纵向一屏的滚动范围
InitVScroll();
InitHScroll();
}
/////////////////////////////////////////////////////////////////////////////
// CDrawView diagnostics
#ifdef _DEBUG
void CDrawView::AssertValid() const
{
CView::AssertValid();
}
void CDrawView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CDrawDoc* CDrawView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawDoc)));
return (CDrawDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CDrawView message handlers
void CDrawView::InitVScroll()
{
//得到滚动条的最大范围
nVScrollMax=(int)(((float)m_hScreen*p_Screen[0].blc)/(blc*nScrollMin));
//得到当前的滚动条范围
nVScrollPos=nVScrollMax-(int)((m_yStart-p_Screen[0].sy)/(blc*nScrollMin));
//设置滚动条最大范围和当前位置
SetScrollRange(SB_VERT,0,nVScrollMax,TRUE);
SetScrollPos(SB_VERT,nVScrollPos);//rrr.top=0;
UpdateWindow();
}
void CDrawView::InitHScroll()
{
//得到滚动条的最大范围
nHScrollMax=(int)(((float)m_hScreen*p_Screen[0].blc/blc)/nScrollMin);
//得到当前的滚动条范围
nHScrollPos=(int)((m_xStart-p_Screen[0].sx)/blc/nScrollMin);
//设置滚动条最大范围和当前位置
SetScrollRange(SB_HORZ,0,nHScrollMax,TRUE);
SetScrollPos(SB_HORZ,nHScrollPos);//rrr.top=0;
UpdateWindow();
}
//选中菜单“绘制圆弧”时被调用
void CDrawView::OnDrawArc()
{
PushNumb=0; //鼠标左键按下次数
m_DrawCurrent=6; //标识进行圆弧绘制操作
}
//选中菜单“绘制圆”时被调用
void CDrawView::OnDrawCircle()
{
PushNumb=0; //鼠标左键按下次数
m_DrawCurrent=4; //标识进行圆绘制操作
}
//选中菜单“绘制圆形区域”时被调用
void CDrawView::OnDrawCircle1()
{
PushNumb=0; //鼠标左键按下次数
m_DrawCurrent=5; //标识进行圆形区域操作
}
//选中菜单“绘制直线”时被调用
void CDrawView::OnDrawLine()
{
PushNumb=0;
m_DrawCurrent=1; //标识进行直线绘制操作
}
//选中菜单“绘制连续直线”时被调用
void CDrawView::OnDrawPline()
{
PushNumb=0;
m_DrawCurrent=2; //标识进行连续直线绘制操作
}
//选中菜单“绘制多边形区域”时被调用
void CDrawView::OnDrawRgn()
{
PushNumb=0;
m_DrawCurrent=3; //标识进行多边形区域绘制操作
}
//选中菜单“标注文字”时被调用
void CDrawView::OnDrawText()
{
PushNumb=0;
m_DrawCurrent=7; //标识进行文字标注操作
}
//在标注文字对话框中填入文字时被调用在屏幕上写文字
void CDrawView::DrawText()
{
CClientDC ht(this);
//以下从标注文字对话框中得到字体参数
m_TextString=pTextDlg->m_Text;
m_FontHeight=pTextDlg->m_FontHeight;
m_FontWide=pTextDlg->m_FontWide;
m_TextAngle=pTextDlg->m_Angle1;
m_FontAngle=pTextDlg->m_Angle2;
m_FontBetween=pTextDlg->m_FontBetween;
//对一个字体类的参数重新进行辅值
m_Text1->Init(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,m_TextX,m_TextY
,m_TextAngle,m_FontAngle,m_FontHeight,m_FontWide,m_FontBetween,0,m_TextString);
m_Text1->Draw(&ht,0,0,m_bColor);//绘制标注信息
}
//按‘确定'退出标注文字对话框时被调用的函数，用来增加一个标注文字项
void CDrawView::DrawTextOnOk()
{
CDrawDoc* pDoc = GetDocument();
CClientDC ht(this);
int TextLong;
PushNumb=0;
m_TextString=pTextDlg->m_Text; //得到标注的文字信息
TextLong=m_TextString.GetLength(); //标注文字的长度
if(TextLong>0)
{
//增加并重新绘制标注的文字
int id=pDoc->GetTextId();
pDoc->AddText(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,id,m_TextX,
m_TextY,m_TextAngle,m_FontAngle,m_FontHeight,m_FontWide,
m_FontBetween,0,TextLong,m_TextString)
->Draw(&ht,0,0,m_bColor);
pTextDlg->m_Text.Empty(); //清空标注文字对话框中编辑框中顶文字
pTextDlg->SendMessage(WM_INITDIALOG);
//以下是记录增加标注信息这一操作，供逆操作时用
GraphUndo[0].Index=pDoc->GetMaxIndex(5);//此标注文字的位置
GraphUndo[0].Lb=5; //标注文字
pDoc->AddUndo(2,1,GraphUndo);
ReleaseCapture(); //释放捕捉的鼠标
}
}
//按‘放弃'退出标注文字对话框时被调用的函数
void CDrawView::DrawTextOnCancel()
{
pTextDlg->m_Text.Empty(); ////清空标注文字对话框中编辑框中顶文字
pTextDlg->SendMessage(WM_INITDIALOG);
}
//按下鼠标左键时被调用，ON_WM_LBUTTONDOWN消息的映射函数
void CDrawView::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
float r;
float xx1,yy1,xx2,yy2;
int x1,x2,y1,y2,Lb,Index,pbh;
BOOL m_Fill;
CDrawDoc* pDoc = GetDocument(); //得到文档指针
CClientDC ht(this);
if(m_DrawCurrent==1) //如果正在绘制直线
{
if(PushNumb==0) //如果是第一次按下左鼠标键
{
PushNumb++; //做标记表示按下鼠标左键一次
mPointOrign=point; //直线的第一点等于点中点
mPointOld=point; //记录本次点中点
SetCapture(); //捕捉鼠标输入
}
else if(PushNumb==1) //第二次按下左鼠标键(即按下直线的结束点时)
{
//以下得到直线起终点的实际坐标
VPtoDP(mPointOrign.x,mPointOrign.y,&xx1,&yy1);
VPtoDP(point.x,point.y,&xx2,&yy2);
int id=pDoc->GetLineId(); //得到直线的唯一识别号
//增加一条直线并重新绘画此直线
pDoc->AddLine(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,id,
xx1,yy1,xx2,yy2)
->Draw(&ht,0,0,m_bColor);
PushNumb=0; //鼠标按键次数为0，重新进行直线的绘制
//以下是记录增加直线这一操作，供逆操作时用
GraphUndo[0].Index=pDoc->GetMaxIndex(1);//得到此直线的序号
GraphUndo[0].Lb=1; //直线
pDoc->AddUndo(2,1,GraphUndo);
ReleaseCapture();
}
}
else if(m_DrawCurrent==2||m_DrawCurrent==3)//正在绘制连续直线或者多边形区域
{
//将点的坐标存入Pointxy中
PointXyz[PushNumb].x=m_xStart+blc*point.x;
PointXyz[PushNumb].y=m_yStart+blc*(m_hScreen-point.y);
if(PushNumb==0) //如果是第一次按下左鼠标键
{
SetCapture(); //捕捉鼠标
mPointOrign=point;//原点等于点中点
mPointOld=point; //将前一个点设为点中点的坐标
}
else //二次以上按下鼠标左键时
{
mPointOrign=mPointOld; //将上一个点设为原点
mPointOld=point; //将点中点设为原点
}
PushNumb++; //记录按下点的数目
}
else if(m_DrawCurrent==4||m_DrawCurrent==5) //如果正在绘制普通圆或者填充圆
{
if(PushNumb==0) //如果是第一次按下左鼠标键
{
mPointOrign=point; //原点等于点中点
mPointOld=point; //上一个点也等于点中点
PushNumb++;
SetCapture(); //捕捉鼠标
}
else //二次以上按下鼠标左键时
{
PushNumb=0; //鼠标按键次数为0，重新进行直线的绘制
//保存圆或填充圆
r=(float)sqrt(pow((float)(mPointOrign.x-mPointOld.x),2)+pow((float)(mPointOrign.y-mPointOld.y),2));
VPtoDP(mPointOrign.x,mPointOrign.y,&xx1,&yy1);
if(m_DrawCurrent==4) //如果是绘制一般圆
m_Fill=0;
else
m_Fill=1;
//保存圆并以覆盖模式重画圆
int id=pDoc->GetCircleId();
pDoc->AddCircle(m_pColor,m_brColor,m_LineWide,m_LineType,
m_Layer,id,xx1,yy1,r,m_Fill)
->Draw(&ht,0,0,m_bColor);
ReleaseCapture(); //释放捕捉的鼠标
//以下是记录增加圆这一操作，供逆操作时用
GraphUndo[0].Index=pDoc->GetMaxIndex(3); //此圆的序号
GraphUndo[0].Lb=3; //类别是圆
pDoc->AddUndo(2,1,GraphUndo);
ReleaseCapture();
}
}
else if(m_DrawCurrent==6)//正在绘制圆弧
{
if(PushNumb==0) //第一次按下鼠标左键
{
SetCapture();
DrawArcYes=0;
mPointOrign1=point; //记录圆弧第一点
PushNumb++;
}
else if(PushNumb==1) //第二次按下鼠标左键
{
mPointOrign=point; //记录下圆弧的第二点
PushNumb++;
}
else //第三次按下鼠标键
{
//计算圆弧的特征参数
jsarc(mPointOrign1,mPointOrign,point,&m_CircleX,&m_CircleY,
&m_CircleR,&m_Angle1,&m_Angle2);
//增加一个圆弧并重新绘制圆弧
int id=pDoc->GetArcId();
pDoc->AddArc(m_pColor,m_brColor,m_LineWide,m_LineType,m_Layer,id,
m_CircleX,m_CircleY,m_CircleR,0,m_Angle1,m_Angle2)
->Draw(&ht,0,0,m_bColor);
PushNumb=0; ////鼠标按键次数为0，重新进行圆弧的绘制
ReleaseCapture(); //释放捕捉的鼠标
//以下是记录增加圆弧这一操作，供逆操作时用
GraphUndo[0].Index=pDoc->GetMaxIndex(4); //此圆弧的序号
GraphUndo[0].Lb=4; //类别是圆弧
pDoc->AddUndo(2,1,GraphUndo);
ReleaseCapture();
}
}
else if(m_DrawCurrent==7) //进行标注文字的操作
{
VPtoDP(point.x,point.y,&m_TextX,&m_TextY);
if(!pTextDlg) //如果标注文字对话框不存在，产生对话框
{
//初始画形成一个标注文字对话框
pTextDlg=new TextWriteDlg(this,m_TextString,m_FontHeight,m_FontWide,
m_TextAngle,m_FontAngle,m_FontBetween);
ASSERT(pTextDlg);
}
if(!(pTextDlg->IsOpen())) //如果对话框没有打开
{
pTextDlg->Create(ID_WRITE_TEXT,this);
}
if(!(pTextDlg->IsVisible()))//如果对话框当前不可见
{
pTextDlg->ShowWindow(SW_SHOW); //使标注文字对话框可见
}
}
else if(m_DrawCurrent==11||m_DrawCurrent==12||m_DrawCurrent==50) //正在进行图形放大或图形移动
{
if(PushNumb==0) //如果第一次按下鼠标左键
{
mPointOrign=point; //原点等于点中点
mPointOld=point; //上一个点等于点中点
PushNumb++; //按键数增加1
SetCapture(); //捕捉鼠标
}
else if(PushNumb==1)//第二次按下左键
{
if(m_DrawCurrent==11) //图形放大
{
//得到左下点和右上点
x1=min(mPointOrign.x,point.x);
y1=max(mPointOrign.y,point.y);
x2=max(mPointOrign.x,point.x);
y2=min(mPointOrign.y,point.y);
//改变原点的坐标
VPtoDP(x1,y1,&m_xStart,&m_yStart);
//改变比例
float bl1=(float)m_wScreen/(float)(x2-x1); //横向放大比例
float bl2=(float)m_hScreen/(float)(y1-y2); //纵向放大比例
if(bl2<bl1)
bl1=bl2; //取较小的变化比例
if(bl1>0)
blc=blc/bl1; //改变显示比例
pDoc->AddScreen(m_xStart,m_yStart,blc); //保存本屏的参数
InitVScroll();
InitHScroll();
Invalidate(); //使图形重画
}
else if(m_DrawCurrent==12) //图形移动操作
{
//改变原点（左下角点）的实际坐标
m_xStart=m_xStart-blc*(point.x-mPointOrign.x);
m_yStart=m_yStart+blc*(point.y-mPointOrign.y);
pDoc->AddScreen(m_xStart,m_yStart,blc); //保存本屏的参数
InitVScroll();
InitHScroll();
Invalidate(); //使图形重画
}
else if(m_DrawCurrent==50) //如果是插入OLE对象操作
{
//得到左下点和右上点
x1=min(mPointOrign.x,point.x);
y1=max(mPointOrign.y,point.y);
x2=max(mPointOrign.x,point.x);
y2=min(mPointOrign.y,point.y);
COleInsertDialog dlg;
if (dlg.DoModal() != IDOK)
return;
BeginWaitCursor();
CDrawCntrItem* pItem = NULL;
TRY
{
pItem = new CDrawCntrItem(pDoc);
ASSERT_VALID(pItem);
if (!dlg.CreateItem(pItem))
AfxThrowMemoryException(); // any exception will do
ASSERT_VALID(pItem);
if (dlg.GetSelectionType()==COleInsertDialog::createNewItem)
pItem->DoVerb(OLEIVERB_SHOW, this);
ASSERT_VALID(pItem);
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