JuniorHighClient/HJHomework/ImageEx.cpp

// ImageEx.cpp : 实现文件
//

#include "stdafx.h"
#include "ImageEx.h"


// CImageEx

CImageEx::CImageEx(IN const WCHAR* filename,IN BOOL useEmbeddedColorManagement/* = FALSE*/)
	:Image(filename,useEmbeddedColorManagement)
{

}

CImageEx::CImageEx(IN IStream* stream,IN BOOL useEmbeddedColorManagement/* = FALSE*/)
	:Image(stream,useEmbeddedColorManagement)
{

}

CImageEx::~CImageEx()
{
}


//绘画图像
bool CImageEx::DrawImage(CDC * pDC, INT nXPos, INT nYPos)
{

	if(IsNull())
		return false;

	//创建屏幕
	ASSERT(pDC!=NULL);
	Graphics graphics(pDC->GetSafeHdc());

	//获取属性
	INT nImageWidth=this->GetWidth();
	INT nImageHeight=this->GetHeight();

	//构造位置
	RectF rcDrawRect;
	rcDrawRect.X=(REAL)nXPos;
	rcDrawRect.Y=(REAL)nYPos;
	rcDrawRect.Width=(REAL)nImageWidth;
	rcDrawRect.Height=(REAL)nImageHeight;

	//绘画图像
	graphics.DrawImage(this,rcDrawRect,0,0,(REAL)nImageWidth,(REAL)nImageHeight,UnitPixel);

	return true;
}

//绘画图像
bool CImageEx::DrawImage( CDC * pDC, INT nXPos, INT nYPos, INT nDestWidth, INT nDestHeight )
{
	if(IsNull())
		return false;
	//创建屏幕
	ASSERT(pDC!=NULL);
	Graphics graphics(pDC->GetSafeHdc());

	//构造位置
	RectF rcDrawRect;
	rcDrawRect.X=(REAL)nXPos;
	rcDrawRect.Y=(REAL)nYPos;
	rcDrawRect.Width=(REAL)nDestWidth;
	rcDrawRect.Height=(REAL)nDestHeight;

	//绘画图像
	graphics.DrawImage(this,rcDrawRect,0,0,(REAL)GetWidth(),(REAL)GetHeight(),UnitPixel);

	return true;
}

//绘画图像
bool CImageEx::DrawImage( CDC * pDC, RECT &rc )
{
	if(IsNull())
		return false;

	//创建屏幕
	ASSERT(pDC!=NULL);
	Graphics graphics(pDC->GetSafeHdc());

	//构造位置
	RectF rcDrawRect;
	rcDrawRect.X=(REAL)rc.left;
	rcDrawRect.Y=(REAL)rc.top;
	rcDrawRect.Width=(REAL)(rc.right-rc.left);
	rcDrawRect.Height=(REAL)(rc.bottom-rc.top);

	//绘画图像
	graphics.DrawImage(this,rcDrawRect,0,0,(REAL)GetWidth(),(REAL)GetHeight(),UnitPixel);

	return true;
}

//绘画图像
bool CImageEx::DrawImage(CDC * pDC, INT nXDest, INT nYDest, INT nDestWidth, INT nDestHeight, INT nXScr, INT nYSrc)
{
	if(IsNull())
		return false;

	//创建屏幕
	ASSERT(pDC!=NULL);
	Graphics graphics(pDC->GetSafeHdc());

	//构造位置
	RectF rcDrawRect;
	rcDrawRect.X=(REAL)nXDest;
	rcDrawRect.Y=(REAL)nYDest;
	rcDrawRect.Width=(REAL)nDestWidth;
	rcDrawRect.Height=(REAL)nDestHeight;

	//绘画图像
	graphics.DrawImage(this,rcDrawRect,(REAL)nXScr,(REAL)nYSrc,(REAL)nDestWidth,(REAL)nDestHeight,UnitPixel);

	return true;
}

//绘画图像
bool CImageEx::DrawImage(CDC * pDC, INT nXDest, INT nYDest, INT nDestWidth, INT nDestHeight, INT nXScr, INT nYSrc, INT nSrcWidth, INT nSrcHeight)
{
	if(IsNull())
		return false;

	//创建屏幕
	ASSERT(pDC!=NULL);
	Graphics graphics(pDC->GetSafeHdc());

	//构造位置
	RectF rcDrawRect;
	rcDrawRect.X=(REAL)nXDest;
	rcDrawRect.Y=(REAL)nYDest;
	rcDrawRect.Width=(REAL)nDestWidth;
	rcDrawRect.Height=(REAL)nDestHeight;

	//绘画图像
	graphics.DrawImage(this,rcDrawRect,(REAL)nXScr,(REAL)nYSrc,(REAL)nSrcWidth,(REAL)nSrcHeight,UnitPixel);

	return true;
}

//	是否为空图借
BOOL CImageEx::IsNull()
{
	return this->lastResult != Ok;
}