Qt 导出图像（代码保存）

来源：互联网发布：java 多重继承编辑：程序博客网时间：2024/06/05 23:08

bool CSSCEViewerMainFrame::SaveCurrentPageToPicture( int eType, QSize szDest )

    QImage image( szDest, QImage::Format_RGB32 );

    ExportCurrentPageToBMP( image, szDest );

    CSSEMainViewPro* pView = m_pMultiViewManager->GetFirstValidView( true );

    QString strFileName;

    strFileName = QString("%1_[%2]_%3").arg( pView == NULL ? "" : pView->GetDcmTagValueList( "0010,0020_0010,0010_0010,0040_0010,1010_0008,0060_0008,0020", "_" ) )

            .arg( CSSECfgSessionInfo::GetUserName() ).arg( CSpiderGUID::HashPJW() );

    QString str = m_pCfgFileDirectory->GetDirectory( "DIRECTORY_GLOBAL_EXPORT", true );

str.replace("/","\\");

    QString strDir, strExtFilname;

    switch( eType )

        case IDN_METRO_EXPORT_IMAGEFILE_BTN_JPEG:

            strFileName = str + "JPEG" + "\\" + strFileName + "." + "jpeg" ;

            strDir = str + "JPEG";

            strExtFilname = "JPEG";

            break;

        case IDN_METRO_EXPORT_IMAGEFILE_BTN_BMP:

            strFileName = str + "BMP" + "\\" + strFileName + "." + "bmp" ;

            strDir = str + "BMP";

            strExtFilname = "BMP";

            break;

        case IDN_METRO_EXPORT_IMAGEFILE_BTN_PNG:

            strFileName = str + "PNG" + "\\" + strFileName + "." + "png" ;

            strDir = str + "PNG";

            strExtFilname = "PNG";

            break;

        case IDN_METRO_EXPORT_IMAGEFILE_BTN_TIFF:

            strFileName = str + "TIFF" + "\\" + strFileName + "." + "tiff" ;

            strDir = str + "TIFF";

            strExtFilname = "TIFF";

            break;

        case IDN_METRO_EXPORT_IMAGEFILE_BTN_PGM:

            strFileName = str + "PGM" + "\\" + strFileName + "." + "pgm" ;

            strDir = str + "PGM";

            strExtFilname = "PGM";

            break;

        case IDN_METRO_EXPORT_IMAGEFILE_BTN_PPM:

            strFileName = str + "PPM" + "\\" + strFileName + "." + "ppm" ;

            strDir = str + "PPM";

            strExtFilname = "PPM";

            break;

    QDir *imageDir = new QDir( strDir );

    bool exist = imageDir->exists( strDir );

    if( !exist )

      imageDir->mkpath( strDir );

    delete imageDir;

    imageDir = NULL;

    bool  bResult = false;

    bResult = image.save( strFileName );

    if( bResult )

        m_hitText  = new  CSSCEViewerLabel( this , strFileName );

    else

        m_hitText  = new  CSSCEViewerLabel( this , "图像导出失败！" );

    return bResult;

 ExportCurrentPageToBMP( image, szDest )  调用   ExportCurrentPage  函数
bool CSSCEBaseExMultiViewManager::ExportCurrentPage( QSize szImage, QImage* pImage )
{
    float fScaleX = float(szImage.width()) / float(m_rcRealClient.width());
    float fScaleY = float(szImage.height()) / float(m_rcRealClient.height());
    float fScale = fScaleX > fScaleY ? fScaleX : fScaleY;
    QVector<QRect> vtrLayout;
    intnFirstView;
    GetCurrentPageLayout( QRect( QPoint(0,0), szImage ), vtrLayout, nFirstView );  // 获得不同分格的View窗口布局，许多个小窗格
    QPainter pPainter(pImage);
    pPainter.setRenderHint(QPainter::Antialiasing, false);
    pPainter.setRenderHint(QPainter::HighQualityAntialiasing, false);
    for( int i=0; i< vtrLayout.size(); i++ )           //把View中每个小的窗格画到不同的QImage上，再把这些小的QImage画到同一个大的QImage上
    {
        QRect rcNew = vtrLayout[i];
        QImage signalImage( rcNew.size(), QImage::Format_RGB32 );
        QImage * psignalImage = &signalImage;
        CSSEMainView * pView = GetView(nFirstView+i);
        pView->DrawCoreToQImage( psignalImage, QRect( QPoint(0,0), rcNew.size() ) , fScale );
        pPainter.drawImage( QRectF(rcNew), *psignalImage, QRectF(psignalImage->rect()) );
    }
    return true;
}

DrawCoreToQImage 调用 DrawCoreToUnknow  函数

void CSSEMainView::DrawCoreToUnknow( QPainter* pPainter, QImage* &pImage, bool bToPainter, QRect rcNewSize, float fScale )
{    
if ( m_pSSEImage->IsValid() )
{//BEGIN
QRect rcOrgView = m_rcClient;
float fOrgZoomScale = m_pSSEImage->GetZoomScale();
// 图像先放大
if( fScale != 1.0f )
{
m_rcClient = rcNewSize;
m_pSSEImage->OnSize( m_rcClient );
m_pSSEImage->ZoomImageEx( fScale );
}
if( bToPainter )
{
QDateTime dtStart = QDateTime::currentDateTime();
QPainter* pLocalPainter = NULL;
if( pPainter == NULL )
{
pLocalPainter = new QPainter(this);
pPainter = pLocalPainter;
}
pPainter->setRenderHint(QPainter::Antialiasing, false);
pPainter->setRenderHint(QPainter::HighQualityAntialiasing, false);
#if defined(WIN32)
pPainter->setRenderHint(QPainter::SmoothPixmapTransform, !CMouseUtility::IsAnyButtonDown() );
            pPainter->drawImage( m_pSSEImage->GetDisplayImageViewRect().toRect(), *(m_pSSEImage->GetMappedImage()), m_pSSEImage->GetDisplayImageVisibleRect() );
//pPainter->drawPixmap( m_pSSEImage->GetDisplayImageViewRect(), *(m_pSSEImage->GetDisplayImage()), m_pSSEImage->GetDisplayImageVisibleRect() );
#else
pPainter->setRenderHint(QPainter::SmoothPixmapTransform, !CMouseUtility::IsAnyButtonDown() );
            pPainter->drawImage( m_pSSEImage->GetDisplayImageViewRect().toRect(), *(m_pSSEImage->GetMappedImage()), m_pSSEImage->GetDisplayImageVisibleRect() );
#endif
            //if( !CMouseUtility::IsAnyButtonWorking() )zqj
{
DrawElements( pPainter );
}
{
//QDateTime dtCurrent = QDateTime::currentDateTime();
//QPen pen( QColor( 255, 100, 0 ) );
//pPainter->setPen(pen);
//pLocalPainter->drawText( QPoint( 10, 20 ), QString::number( dtStart.msecsTo( dtCurrent  ) ) );
//dtStart = dtCurrent;
//qDebug() << "Draw View: " <<  m_nViewID;
}
if( pLocalPainter != NULL )
{
delete pLocalPainter;
}
}
else
{
            if( pImage == NULL )
            {
              pImage = new QImage( m_rcClient.size(), QImage::Format_RGB32 );
            }
            QPainter localPainter(pImage);
            localPainter.setRenderHint(QPainter::Antialiasing, true);
            localPainter.setRenderHint(QPainter::HighQualityAntialiasing, true);
            localPainter.setRenderHint(QPainter::SmoothPixmapTransform, true );
            localPainter.drawImage(m_pSSEImage->GetDisplayImageViewRect(), *(m_pSSEImage->GetMappedImage()), m_pSSEImage->GetDisplayImageVisibleRect() );
            DrawElements( &localPainter );
}
// 图像缩小
if( fScale != 1.0f )
{
m_rcClient = rcOrgView;
m_pSSEImage->OnSize( m_rcClient );
m_pSSEImage->ZoomImage( fOrgZoomScale );
}
}//END
else
{
QRect rcOrgView = m_rcClient;
// 图像先放大
if( fScale != 1.0f )
{
m_rcClient = rcNewSize;
}
if( bToPainter )
{
QPainter* pLocalPainter = NULL;
if( pPainter == NULL )
{
pLocalPainter = new QPainter(this);
pPainter = pLocalPainter;
}
            DrawElements( pPainter );
// 绘制外边框
            {
                QPen pen( QColor( 109, 140, 231, 255 ) );
pPainter->setPen( pen );
                //liyanbo 画笔和预留一个像素
//                pPainter->drawRect( rect().adjusted( 0, 0, -1, -1 )  );
}
delete pLocalPainter;
}
else
{
            if( pImage == NULL )
            {
                pImage = new QImage( m_rcClient.size(), QImage::Format_RGB32 );
            }
QPainter localPainter(pImage);
DrawElements( &localPainter );
}
// 图像缩小
if( fScale != 1.0f )
{
m_rcClient = rcOrgView;
}
}
}