コード例 #1
0
ファイル: ImageQt.cpp プロジェクト: DreamOnTheGo/src
void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& tileRect, const AffineTransform& patternTransform,
                        const FloatPoint& phase, ColorSpace, CompositeOperator op, const FloatRect& destRect)
{
    QPixmap* framePixmap = nativeImageForCurrentFrame();
    if (!framePixmap) // If it's too early we won't have an image yet.
        return;

    // Qt interprets 0 width/height as full width/height so just short circuit.
    QRectF dr = QRectF(destRect).normalized();
    QRect tr = QRectF(tileRect).toRect().normalized();
    if (!dr.width() || !dr.height() || !tr.width() || !tr.height())
        return;

    QPixmap pixmap = *framePixmap;
    if (tr.x() || tr.y() || tr.width() != pixmap.width() || tr.height() != pixmap.height())
        pixmap = pixmap.copy(tr);

    CompositeOperator previousOperator = ctxt->compositeOperation();

    ctxt->setCompositeOperation(!pixmap.hasAlpha() && op == CompositeSourceOver ? CompositeCopy : op);

    QPainter* p = ctxt->platformContext();
    QTransform transform(patternTransform);

    // If this would draw more than one scaled tile, we scale the pixmap first and then use the result to draw.
    if (transform.type() == QTransform::TxScale) {
        QRectF tileRectInTargetCoords = (transform * QTransform().translate(phase.x(), phase.y())).mapRect(tr);

        bool tileWillBePaintedOnlyOnce = tileRectInTargetCoords.contains(dr);
        if (!tileWillBePaintedOnlyOnce) {
            QSizeF scaledSize(float(pixmap.width()) * transform.m11(), float(pixmap.height()) * transform.m22());
            QPixmap scaledPixmap(scaledSize.toSize());
            if (pixmap.hasAlpha())
                scaledPixmap.fill(Qt::transparent);
            {
                QPainter painter(&scaledPixmap);
                painter.setCompositionMode(QPainter::CompositionMode_Source);
                painter.setRenderHints(p->renderHints());
                painter.drawPixmap(QRect(0, 0, scaledPixmap.width(), scaledPixmap.height()), pixmap);
            }
            pixmap = scaledPixmap;
            transform = QTransform::fromTranslate(transform.dx(), transform.dy());
        }
    }

    /* Translate the coordinates as phase is not in world matrix coordinate space but the tile rect origin is. */
    transform *= QTransform().translate(phase.x(), phase.y());
    transform.translate(tr.x(), tr.y());

    QBrush b(pixmap);
    b.setTransform(transform);
    p->fillRect(dr, b);

    ctxt->setCompositeOperation(previousOperator);

    if (imageObserver())
        imageObserver()->didDraw(this);
}
コード例 #2
0
void QuizFrame::resizeImageBox() {
    imageBox->resize( imageBox->width(), topLeftPanel->height() );
    if( movie ) {
        // Use the pixmap to compute the scaled size.
        int proportionalWidth = ( image->height() - 20 ) * pixmap->width() / pixmap->height();
        movie->setScaledSize( QSize( proportionalWidth, image->height() ) );
        image->setMovie( movie );
        movie->start();
    }
    else if( pixmap ) {
        QPixmap scaledPixmap( pixmap->scaledToHeight( image->height() - 20, Qt::SmoothTransformation ) );
        image->setPixmap( scaledPixmap  ); 
    }
    imageStack->updateGeometry(); // To resize the imageButton.
}
コード例 #3
0
ファイル: mainwindow.cpp プロジェクト: alsaibie/Qt_RescueBot
QPixmap MainWindow::scalePixmap(QPixmap *pixmapOriginal, float scale)
{
    QSize   scaledsize = QSize(pixmapOriginal->size());
    scaledsize.setHeight(scaledsize.height()*scale);
    scaledsize.setWidth(scaledsize.width()*scale);
    QPixmap scaledPixmap(scaledsize);
    scaledPixmap.fill(Qt::transparent);
    QPainter p(&scaledPixmap);
    p.setRenderHint(QPainter::Antialiasing);
    p.setRenderHint(QPainter::SmoothPixmapTransform);
    p.setRenderHint(QPainter::HighQualityAntialiasing);
    p.scale(scale,scale);
    p.drawPixmap(0, 0, *pixmapOriginal);
    p.end();
    return scaledPixmap;
}
コード例 #4
0
ファイル: movielabel.cpp プロジェクト: k8/ChromaKey
void MovieLabel::scalePixmap()
{
    QLabel::setPixmap(scaledPixmap(orgPixmap));
}
コード例 #5
0
int QgsComposerPictureWidget::addDirectoryToPreview( const QString& path )
{
  //go through all files of a directory
  QDir directory( path );
  if ( !directory.exists() || !directory.isReadable() )
  {
    return 1; //error
  }

  QFileInfoList fileList = directory.entryInfoList( QDir::Files );
  QFileInfoList::const_iterator fileIt = fileList.constBegin();

  QProgressDialog progress( "Adding Icons...", "Abort", 0, fileList.size() - 1, this );
  //cancel button does not seem to work properly with modal dialog
  //progress.setWindowModality(Qt::WindowModal);

  int counter = 0;
  for ( ; fileIt != fileList.constEnd(); ++fileIt )
  {

    progress.setLabelText( tr( "Creating icon for file %1" ).arg( fileIt->fileName() ) );
    progress.setValue( counter );
    QCoreApplication::processEvents();
    if ( progress.wasCanceled() )
    {
      break;
    }
    QString filePath = fileIt->absoluteFilePath();

    //test if file is svg or pixel format
    bool fileIsPixel = false;
    bool fileIsSvg = testSvgFile( filePath );
    if ( !fileIsSvg )
    {
      fileIsPixel = testImageFile( filePath );
    }

    //exclude files that are not svg or image
    if ( !fileIsSvg && !fileIsPixel )
    {
      ++counter; continue;
    }

    QListWidgetItem * listItem = new QListWidgetItem( mPreviewListWidget );
    listItem->setFlags( Qt::ItemIsSelectable | Qt::ItemIsEnabled );

    if ( fileIsSvg )
    {
      QIcon icon( filePath );
      listItem->setIcon( icon );
    }
    else //for pixel formats: create icon from scaled pixmap
    {
      QPixmap iconPixmap( filePath );
      if ( iconPixmap.isNull() )
      {
        ++counter; continue; //unknown file format or other problem
      }
      //set pixmap hardcoded to 30/30, same as icon size for mPreviewListWidget
      QPixmap scaledPixmap( iconPixmap.scaled( QSize( 30, 30 ), Qt::KeepAspectRatio ) );
      QIcon icon( scaledPixmap );
      listItem->setIcon( icon );
    }

    listItem->setText( "" );
    //store the absolute icon file path as user data
    listItem->setData( Qt::UserRole, fileIt->absoluteFilePath() );
    ++counter;
  }

  return 0;
}