using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;namespace WpfOfdReader.OfdFileType
{class OfdFileReader{ZipArchive _zipArchive;public void ReadZipFile(string fileName){_zipArchive = ZipFile.OpenRead(fileName);}public void Close(){if (_zipArchive != null)_zipArchive.Dispose();}public List<OfdFileItemInfo> AllFileItem{get{return _zipArchive.Entries.Select(o => new OfdFileItemInfo(o)).ToList();}}private ZipArchiveEntry GetArchiveEntry(ZipFilePath path){foreach (ZipArchiveEntry entry in _zipArchive.Entries){if (entry.FullName == path.FulleName){return entry;}}return null;}public static byte[] GetFileBuffer(ZipArchiveEntry entry){List<byte[]> listBuffer = new List<byte[]>();using (Stream s = entry.Open()){while (true){byte[] buffer = new byte[10];int n = s.Read(buffer, 0, buffer.Length);if (n <= 0)break;if (n == buffer.Length){listBuffer.Add(buffer);}else{Array.Resize(ref buffer, n);listBuffer.Add(buffer);break;}}}int totalLen = 0;listBuffer.ForEach(o => totalLen += o.Length);byte[] result = new byte[totalLen];int index = 0;foreach (byte[] buffer in listBuffer){Buffer.BlockCopy(buffer, 0, result, index, buffer.Length);index += buffer.Length;}return result;}}
}

    public class PageObject{public string ID { get; set; }public PageLayer ParentLayer { get; set; }public string PageFileLoc => ParentLayer.ParentPage.PageFileLoc;XmlNode _xmlNode;public string Boundary { get; set; }public string CTM { get; set; }public OfdClipsGroup ClipsGroup { get; set; }public void SetPageObject(PageLayer layer, XmlNode xmlNode){_xmlNode = xmlNode;ID = XmlHelper.GetXmlAttributeValue(xmlNode, "ID");ParentLayer = layer;Boundary = XmlHelper.GetXmlAttributeValue(xmlNode, "Boundary");CTM = XmlHelper.GetXmlAttributeValue(xmlNode, "CTM");foreach (XmlNode childNode in xmlNode.ChildNodes){if (childNode.Name == OfdClipsGroup.XML_Name){ClipsGroup = OfdClipsGroup.FromXml(childNode);break;}}}public string GetAttributeValue(string name){string result = XmlHelper.GetXmlAttributeValue(_xmlNode, name);return result;}}

    public class OfdVisual : DrawingVisual{public OfdVisual(){}protected DrawingCanvas _drawingCanvas;public DrawingCanvas DrawingCanvas{get{return _drawingCanvas;}}public bool IsAddToCanvas{get{return _drawingCanvas != null;}}internal void AddToCanvas(DrawingCanvas drawingCanvas){if (_drawingCanvas == drawingCanvas)return;_drawingCanvas = drawingCanvas;_drawingCanvas.AddVisual(this);}public void ReomveFromCanvas(){if (_drawingCanvas != null){_drawingCanvas.DeleteVisual(this);}}public virtual void Show(bool visiable, bool even = false){}public Point BoundaryLocation { get; set; }public Size BoundarySize { get; set; }public MatrixTransform ObjectTransform { get; protected set; }public VisualClipsGroup ObjectClipsGroup { get; protected set; }public void SetPageObject(PageObject pageObject){OfdHelper.ParseBoundary(pageObject.Boundary, out Point location, out Size size);BoundaryLocation = location;BoundarySize = size;if (!string.IsNullOrEmpty(pageObject.CTM)){ObjectTransform = OfdHelper.OfdTextToTransform(pageObject.CTM);}if (pageObject.ClipsGroup != null){ObjectClipsGroup = new VisualClipsGroup() { ClipsGroup = pageObject.ClipsGroup };}}protected Rect ClipRect{get{return new Rect(0, 0, BoundarySize.Width, BoundarySize.Height);}}protected RectangleGeometry ClipGeometry{get{RectangleGeometry geometry = new RectangleGeometry(ClipRect);return geometry;}}protected void PutBoundary(DrawingContext dc){TranslateTransform translateBoundary = new TranslateTransform(BoundaryLocation.X, BoundaryLocation.Y);dc.PushTransform(translateBoundary);dc.PushClip(ClipGeometry);}protected void PopBoundary(DrawingContext dc){dc.Pop();dc.Pop();}protected void PutTransform(DrawingContext dc){if (ObjectTransform != null){dc.PushTransform(ObjectTransform);}}protected void PopTransform(DrawingContext dc){if (ObjectTransform != null){dc.Pop();}}}

 void DrawText(){using (DrawingContext dc = RenderOpen()){if (ObjectClipsGroup == null){PutBoundary(dc);PutTransform(dc);DrawTextInner(dc);PopTransform(dc);PopBoundary(dc);}else{foreach (VisulClip visulClip in ObjectClipsGroup){PutBoundary(dc);visulClip.PutClip(dc);PutTransform(dc);DrawTextInner(dc);PopTransform(dc);visulClip.PopClip(dc);PopBoundary(dc);}}}}private void DrawTextInner(DrawingContext dc){int i = -1;double deltaXTotal = 0;double deltaYTotal = 0;Point pt = new Point();foreach (FormattedText formattedText in FormattedTextCollection){i++;if (i != 0){if (DeltaCollectionX != null){double deltaX = DeltaCollectionX.GetValue(i - 1);deltaXTotal += deltaX;}if (DeltaCollectionY != null){double deltaY = DeltaCollectionY.GetValue(i - 1);deltaYTotal += deltaY;}}pt.X = TextLocation.X + deltaXTotal;pt.Y = TextLocation.Y + deltaYTotal - FormattedTextCollection.FontBaseLine;dc.DrawText(formattedText, pt);}}