//?Context.cpp:?implementation?of?the?CContext?class.
//
//////////////////////////////////////////////////////////////////////

#include?“stdafx.h“
#include?“Context.h“

//?根據(jù)繪圖模式設(shè)置繪圖環(huán)境：設(shè)置設(shè)備環(huán)境的模式并創(chuàng)建畫筆
void	SetDrawEnvir（CDC*	pDC?int?drawMode?CPen*?pPen）
{
	int			linestyle?lineWidth;
	COLORREF	color;
	switch（drawMode）?
	{
		case?dmSelect:?//?選中狀態(tài)
		{
			pDC->SetROP2（R2_COPYPEN）;
			linestyle?=?PS_SOLID;
			lineWidth?=?1;
			color?=?RGB（25500）;
			break;
		}
		case?dmPrompt:?//?提示狀態(tài)
		{
			pDC->SetROP2（R2_COPYPEN）;
			linestyle?=?PS_DASH;
			lineWidth?=?1;
			color?=?RGB（0255255）;
			break;
		}
		case?dmDrag:?//?拖動(dòng)狀態(tài)
		{
			pDC->SetROP2（R2_XORPEN）;
			linestyle?=?PS_SOLID;
			lineWidth?=?1;
			color?=?RGB（1921920）;
			break;
		}
		case?dmInvalid:?//?擦除狀態(tài)
		{
			pDC->SetROP2（R2_COPYPEN）;
			linestyle?=?PS_SOLID;
			lineWidth?=?1;
			color?=?::GetBkColor（*pDC）;?//?用背景色畫
			break;
		}
		case?dmNormal:???
		default:
		{
			pDC->SetROP2（R2_COPYPEN）;
			linestyle?=?PS_SOLID;
			lineWidth?=?1;
			color?=?RGB（000）;
			break;
		}		
	}
	pPen->CreatePen（linestylelineWidthcolor）?;
}

//////////////////////////////////////////////////////////////////////
//?Construction/Destruction
//////////////////////////////////////////////////////////////////////
/*
CContext::CContext（）
{

}
*/
CContext::~CContext（）
{
	g_pView->ReleaseDC（pDC）;
}

void?CContext::MoveTo（const?Position?&pt）
{
	g_pView->WorldtoScreen（pt?ptCurrent）;?//?將世界坐標(biāo)轉(zhuǎn)化為屏幕坐標(biāo)

	pDC->SetMapMode（MM_LOENGLISH）;?
	pDC->MoveTo（ptCurrent）;?//?移動(dòng)到ptCurrent
}

void?CContext::LineTo（const?Position?&pt）
{
	g_pView->WorldtoScreen（pt?ptCurrent）;?//?將世界坐標(biāo)轉(zhuǎn)化為屏幕坐標(biāo)

	pDC->SetMapMode（MM_LOENGLISH）;?

	int		n?=?GetROP2（pDC->GetSafeHdc（））;?//?得到原來的繪圖模式
	CPen	pen;?
	if（?drawMode?==?dmNormal?）??//?如果為正常狀態(tài)的繪制，根據(jù)成員變量創(chuàng)建畫筆
		pen.CreatePen（m_linestylem_lineWidthm_color）?;
	else?//?非正常狀態(tài)調(diào)用SetDrawEnvir函數(shù)設(shè)置繪圖環(huán)境
		::SetDrawEnvir（pDC?drawMode?&pen）;
	
	CPen*?pOldPen?=?pDC->Selectobject（&pen）;?//?得到原來的畫筆
	
	pDC->LineTo（ptCurrent）;
	pDC->Selectobject（pOldPen）;?//?恢復(fù)原來的畫筆?
	pDC->SetROP2（n）;?//?恢復(fù)原來的繪圖模式
}

void?CContext::Circle（const?Position?¢er?double?radius）
{
	Position?ltpos（center.x?-?radius?center.y?+?radius?）?;
	Position?rbpos（center.x?+?radius?center.y?-?radius?）?;
	CPoint?ssp?sep?scenp;

	g_pView->WorldtoScreen（ltposssp）?;
	g_pView->WorldtoScreen（rbpossep）?;
//	g_pView->WorldtoScreen（center?scenp）?;	

	int		n?=?GetROP2（pDC->GetSafeHdc（））;
	//?create?a?pen?by?following?rules:
	//?if?in?normal?draw?mode?create?a?pen?by?its?member?variables?
	//?if?else?create?a?pen?using?global?funtion?“SetDrawEnvir“
	CPen	pen;?
	if（?drawMode?==?dmNormal?）?
		pen.CreatePen（m_linestylem_lineWidthm_color）?;
	else
		::SetDrawEnvir（pDC?drawMode?&pen）;

	CPen*?pOldPen?=?pDC->Selectobject（&pen）?;
	pDC->SetMapMode（MM_LOENGLISH）;?
	pDC->SelectStockobject（NULL_BRUSH）?;
	pDC->Ellipse（ssp.x?ssp.y?se

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????2962??2000-10-16?23:40??VCADVIEW.H

?????文件????????326??2006-04-16?22:59??RES\cur00001.cur

?????文件????????326??2000-10-16?23:29??RES\CURSOR1.CUR

?????文件????????326??2000-10-16?20:03??RES\DRAW_ARC.CUR

?????文件????????326??2000-10-16?20:04??RES\DRAW_CIR.CUR

?????文件????????326??2000-10-16?20:02??RES\DRAW_LIN.CUR

?????文件????????326??2000-10-16?20:04??RES\DRAW_REC.CUR

?????文件????????838??2000-10-16?18:58??RES\MODIFY.BMP

?????文件????????326??2000-10-16?23:31??RES\PROMPT_C.CUR

?????文件????????326??2000-10-16?23:31??RES\PROMPT_L.CUR

?????文件????????326??2000-10-16?23:31??RES\PROMPT_R.CUR

?????文件????????326??2006-04-16?22:59??RES\prompt_t.cur

?????文件????????238??2000-10-17?18:44??RES\PROPERTY.BMP

?????文件???????1078??2000-08-20?05:03??RES\TOOLBAR.BMP

?????文件????????718??2010-05-02?15:32??RES\toolbar1.bmp

?????文件???????1078??2000-08-20?05:03??RES\VCAD.ICO

?????文件????????396??2000-08-20?05:03??RES\VCAD.RC2

?????文件???????1078??2000-08-20?05:03??RES\VCADDOC.ICO

?????文件????????718??2000-10-16?19:03??RES\VIEW.BMP

?????文件???????5775??2007-03-15?13:33??ARC.CPP

?????文件???????4735??2007-04-29?22:57??base.CPP

?????文件????????269??2007-03-01?08:11??base.H

?????文件???????4027??2007-03-01?16:24??CIRCLE.CPP

?????文件????????896??2007-03-01?17:45??COMMAND.H

?????文件???????4281??2007-03-01?10:56??Context.cpp

?????文件???????2900??2007-03-01?10:54??Context.h

?????文件???????4660??2007-03-02?13:38??CREATEARC.CPP

?????文件???????3441??2007-03-02?13:40??CREATECIRCLE.CPP

?????文件???????2629??2010-05-02?22:39??CREATECMD.H

?????文件???????3993??2007-03-02?13:47??CREATELINE.CPP

............此處省略40個(gè)文件信息