GDI+图像文件分解与合并

//合并

void CBmp2MDlg::ImagePack(LPCTSTR sPath,LPCTSTR sType)

{

int i,n = m_list.GetItemCount();

if( n<=1 ) return;

CLSID clsid;

GetEncoderClsid( sType,&clsid );

//

int w,h;

CString ss,sFile;

sFile.Format( _T("%s_Packs.%s"),sPath,GetType(sType) );

int iW,iH; //总宽度、总高度

iW = iH = 0;

CArray<Bitmap*,Bitmap*> arr;

//以第一个为准

ss = m_list.GetItemText(0,0);

Bitmap bt( ss );

w = bt.GetWidth();

h = bt.GetHeight();

iW = w;

iH = h;

Bitmap *bts = bt.Clone(0,0,bt.GetWidth(),bt.GetHeight(),0);

arr.Add( bts );

for( i=1;i<n;i++ )

{

ss = m_list.GetItemText(i,0);

Bitmap bt( ss );

iW += bt.GetWidth(); //总宽度，只考虑横向

Bitmap *bts = bt.Clone(0,0,bt.GetWidth(),bt.GetHeight(),0);

arr.Add( bts );

}

//新建指定大小的图片

Bitmap bmp( iW,iH );

//从它得到绘制设备

Graphics *gc = Graphics::FromImage( &bmp );

iW = 0;

for( i=0;i<arr.GetCount();i++ )

{

Bitmap *bt = arr[i];

//从指定长度开始叠加图片

gc->DrawImage( bt,iW,0 );

iW += bt->GetWidth();

}

bmp.Save( sFile,&clsid,NULL );

//

for( i=0;i<arr.GetCount();i++ )

{

delete arr[i];

arr[i] = NULL;

}

arr.RemoveAll();

arr.FreeExtra();

ShellExecute( NULL,_T("open"),sPath,NULL,NULL,SW_SHOW );

}

//--------------------------------------------------

//分解，目前仅考虑 BMP 格式

void CBmp2MDlg::ImageUnPack(LPCTSTR sPath,LPCTSTR sType,int x,int y)

{

if( NULL==m_bitmap ) return; //must!

//

Bitmap *bmp = m_bitmap;

int w = bmp->GetWidth();

int h = bmp->GetHeight();

CLSID clsid;

GetEncoderClsid( sType,&clsid );

CString ss;

int i,k=1;

for( i=0;i<w;i+=x,k++ ) //只考虑横向

{

//新建指定大小的图片

Bitmap bt(x,y);

//从它得到绘制设备

Graphics *gc = Graphics::FromImage( &bt );

//从原图片上截取指定大小的图片贴到这个新建的图片的上面

gc->DrawImage( bmp,RectF(0,0,x,y),i,0,x,y,UnitPixel );

//

ss.Format( _T("%s%s_%d.%s"),sPath,m_sFileTitle,k,GetType(sType) );

//保存到指定路径

bt.Save( ss,&clsid,NULL );

//

delete gc;

gc = NULL;

}

ShellExecute( NULL,_T("open"),sPath,NULL,NULL,SW_SHOW );

}