C++ FileLoader::testFile方法代码示例

void FDialogPreview::GenPreview(QString name)
{
	QPixmap pm;
	QString Buffer = "";
	updtPix();
	if (name.isEmpty())
		return;
	QFileInfo fi = QFileInfo(name);
	if (fi.isDir())
		return;
	int w = pixmap()->width();
	int h = pixmap()->height();
	bool mode = false;
	QString ext = fi.suffix().toLower();
	QString formatD(FormatsManager::instance()->extensionListForFormat(FormatsManager::IMAGESIMGFRAME, 1));
 	QStringList formats = formatD.split("|");
	formats.append("pat");
	formats.removeAll("pdf");
	
	QStringList allFormatsV = LoadSavePlugin::getExtensionsForPreview(FORMATID_FIRSTUSER);
	if (ext.isEmpty())
		ext = getImageType(name);
	if (formats.contains(ext.toUtf8()))
	{
		ScImage im;
		//No doc to send data anyway, so no doc to get into scimage.
		CMSettings cms(0, "", Intent_Perceptual);
		cms.allowColorManagement(false);
		if (im.loadPicture(name, 1, cms, ScImage::Thumbnail, 72, &mode))
		{
			int ix,iy;
			if ((im.imgInfo.exifDataValid) && (!im.imgInfo.exifInfo.thumbnail.isNull()))
			{
				ix = im.imgInfo.exifInfo.width;
				iy = im.imgInfo.exifInfo.height;
			}
			else
			{
				ix = im.width();
				iy = im.height();
			}
			int xres = im.imgInfo.xres;
			int yres = im.imgInfo.yres;
			QString tmp = "";
			QString tmp2 = "";
			QImage im2 = im.scaled(w - 5, h - 44, Qt::KeepAspectRatio, Qt::SmoothTransformation);
			QPainter p;
			QBrush b(QColor(205,205,205), IconManager::instance()->loadPixmap("testfill.png"));
			// Qt4 FIXME imho should be better
			pm = *pixmap();
			p.begin(&pm);
			p.fillRect(0, 0, w, h-44, b);
			p.fillRect(0, h-44, w, 44, QColor(255, 255, 255));
			p.drawImage((w - im2.width()) / 2, (h - 44 - im2.height()) / 2, im2);
			p.drawText(2, h-29, tr("Size:")+" "+tmp.setNum(ix)+" x "+tmp2.setNum(iy));
			if (!(extensionIndicatesPDF(ext) || extensionIndicatesEPSorPS(ext)))
				p.drawText(2, h-17, tr("Resolution:")+" "+tmp.setNum(xres)+" x "+tmp2.setNum(yres)+" "+ tr("DPI"));
			QString cSpace;
			if ((extensionIndicatesPDF(ext) || extensionIndicatesEPSorPS(ext)) && (im.imgInfo.type != ImageType7))
				cSpace = tr("Unknown");
			else
				cSpace=colorSpaceText(im.imgInfo.colorspace);
			p.drawText(2, h-5, tr("Colorspace:")+" "+cSpace);
			p.end();
			setPixmap(pm);
			repaint();
		}
	}
	else if (allFormatsV.contains(ext.toUtf8()))
	{
		FileLoader *fileLoader = new FileLoader(name);
		int testResult = fileLoader->testFile();
		delete fileLoader;
		if ((testResult != -1) && (testResult >= FORMATID_FIRSTUSER))
		{
			const FileFormat * fmt = LoadSavePlugin::getFormatById(testResult);
			if( fmt )
			{
				QImage im = fmt->readThumbnail(name);
				if (!im.isNull())
				{
					QString desc = tr("Size:")+" ";
					desc += value2String(im.text("XSize").toDouble(), PrefsManager::instance()->appPrefs.docSetupPrefs.docUnitIndex, true, true);
					desc += " x ";
					desc += value2String(im.text("YSize").toDouble(), PrefsManager::instance()->appPrefs.docSetupPrefs.docUnitIndex, true, true);
					im = im.scaled(w - 5, h - 21, Qt::KeepAspectRatio, Qt::SmoothTransformation);
					QPainter p;
					QBrush b(QColor(205,205,205), IconManager::instance()->loadPixmap("testfill.png"));
					pm = *pixmap();
					p.begin(&pm);
					p.fillRect(0, 0, w, h-21, b);
					p.fillRect(0, h-21, w, 21, QColor(255, 255, 255));
					p.drawImage((w - im.width()) / 2, (h - 21 - im.height()) / 2, im);
					p.drawText(2, h-5, desc);
					p.end();
					setPixmap(pm);
					repaint();
				}
			}
		}
//.........这里部分代码省略.........

/*
loadImagesThreadInstance::loadImagesThreadInstance()
{
}
*/
void loadImagesThread::processLoadImageJob(int row, const QString& path, int size, int tpId)
{
	ScImageCacheManager &icm = ScImageCacheManager::instance();
	bool cacheEnabled = icm.enabled();
	icm.setEnabled(false);
	//check if list of files has changed and this job is obsolete
	if (pModel->pId != tpId)
	{
		return;
	}

	if (qAbs (row - pictureBrowser->currentRow) > (2 * pictureBrowser->previewIconsVisible))
	{
		emit imageLoadError ( row, tpId, 0 );
		return;
	}

	QFileInfo fi = QFileInfo(path);
	QString ext = fi.suffix().toLower();
	QStringList allFormatsV = LoadSavePlugin::getExtensionsForPreview(FORMATID_FIRSTUSER);
	if (allFormatsV.contains(ext.toUtf8()))
	{
		FileLoader *fileLoader = new FileLoader(path);
		int testResult = fileLoader->testFile();
		delete fileLoader;
		if ((testResult != -1) && (testResult >= FORMATID_FIRSTUSER))
		{
			const FileFormat * fmt = LoadSavePlugin::getFormatById(testResult);
			if (fmt)
			{
				QImage im = fmt->readThumbnail(path);
				if (!im.isNull())
				{
					ImageInformation *imgInfo = new ImageInformation;
					imgInfo->width = im.text("XSize").toDouble();
					imgInfo->height = im.text("YSize").toDouble();
					imgInfo->type = 6;
					imgInfo->colorspace = 0;
					imgInfo->xdpi = 72;
					imgInfo->ydpi = 72;
					imgInfo->layers = 0;
					imgInfo->embedded = false;
					imgInfo->profileName = "";
					imgInfo->valid = true;

					if ((im.width() > (size - 2)) || (im.height() > (size - 2)))
					{
						emit imageLoaded(row, im.scaled (size - 2, size - 2, Qt::KeepAspectRatio, Qt::SmoothTransformation), imgInfo, tpId);
					}
					//image is <= our icon -> put it in as it is
					else
					{
						emit imageLoaded(row, im.copy(), imgInfo, tpId);
					}
				}
			}
		}
		icm.setEnabled(cacheEnabled);
		return;
	}

	ScImage image;
//no realCMYK
	bool mode=false;
//no document needs to be assigned to this
	CMSettings cms ( nullptr, "", Intent_Perceptual);
	cms.allowColorManagement(false);
	cms.setUseEmbeddedProfile(true);

	ImageInformation *imgInfo = new ImageInformation;

	//load previewimage
	if (image.loadPicture(path, 1, cms, ScImage::Thumbnail, 72, &mode))
	{
		int ix,iy;
		if ((image.imgInfo.exifDataValid) && (!image.imgInfo.exifInfo.thumbnail.isNull()))
		{
			ix = image.imgInfo.exifInfo.width;
			iy = image.imgInfo.exifInfo.height;
		}
		else
		{
			ix = image.width();
			iy = image.height();
		}
		imgInfo->width = ix;
		imgInfo->height = iy;
		imgInfo->type = image.imgInfo.type;
		imgInfo->colorspace = image.imgInfo.colorspace;
		imgInfo->xdpi = image.imgInfo.xres;
		imgInfo->ydpi = image.imgInfo.yres;
		imgInfo->layers = image.imgInfo.layerInfo.size();
		imgInfo->embedded = image.imgInfo.isEmbedded;
		imgInfo->profileName = image.imgInfo.profileName;
		imgInfo->valid = true;
//.........这里部分代码省略.........