public PageInfoModel(PdfPageModel pdfPageModel)
{
this.pdfPageModel = pdfPageModel;
var filteredLetters = pdfPageModel.GetLetters().Where(l => !string.IsNullOrEmpty(l.Value.Trim())).ToList();
HeightDistribution = new Distribution(filteredLetters.Select(l => l.GlyphRectangle.Height));
WidthDistribution = new Distribution(filteredLetters.Select(l => l.GlyphRectangle.Width));
}
private bool LoadPage(int pageNo)
{
if (_pdfDocumentModel == null)
{
return(false);
}
_pdfPageModel = _pdfDocumentModel.GetPage(pageNo);
if (_pdfPageModel == null)
{
return(false);
}
// set remove duplicate letters
_pdfPageModel.SetRemoveDuplicateLetters(_removeDuplicateLetters);
// set word extractor
_pdfPageModel.SetWordExtractor(WordExtractor);
// set page segmenter
_pdfPageModel.SetPageSegmenter(PageSegmenter);
var pageInfoModel = _pdfPageModel.GetPageInfo();
// Plot height distrib
HeightHistoPlotModel = pageInfoModel.HeightDistribution?.GetPlotModel("Letters height distribution");
WidthHistoPlotModel = pageInfoModel.WidthDistribution?.GetPlotModel("Letters width distribution");
// Plot page
var pagePlotModel = new PlotModel {
IsLegendVisible = false
};
pagePlotModel.Axes.Add(new LinearAxis {
Position = AxisPosition.Left, Minimum = 0, Maximum = _pdfPageModel.Height
});
pagePlotModel.Axes.Add(new LinearAxis {
Position = AxisPosition.Bottom, Minimum = 0, Maximum = _pdfPageModel.Width
});
// Add background image
try
{
using (var stream = _pdfImageConverter.GetPageStream(pageNo, 2))
{
PageImage = new OxyImage(stream);
}
pagePlotModel.Annotations.Add(new ImageAnnotation
{
ImageSource = PageImage,
Opacity = 0.5,
X = new PlotLength(_pdfPageModel.CropBox.Bounds.BottomLeft.X, PlotLengthUnit.Data),
Y = new PlotLength(_pdfPageModel.CropBox.Bounds.BottomLeft.Y, PlotLengthUnit.Data),
Width = new PlotLength(_pdfPageModel.CropBox.Bounds.Width, PlotLengthUnit.Data),
Height = new PlotLength(_pdfPageModel.CropBox.Bounds.Height, PlotLengthUnit.Data),
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Bottom
});
}
catch (Exception)
{
throw;
}
this.PagePlotModel = pagePlotModel;
if (IsDisplayLetters)
{
DisplayLetters();
}
if (IsDisplayWords)
{
DisplayWords();
}
if (IsDisplayTextLines)
{
DisplayTextLines();
}
if (IsDisplayTextBlocks)
{
DisplayTextBlocks();
}
if (IsDisplayPaths)
{
DisplayPaths();
}
if (IsDisplayImages)
{
DisplayImages();
}
return(true);
}
