//// This code is part of Document Solutions for Imaging demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System.IO;using System.Drawing;using GrapeCity.Documents.Drawing;using GrapeCity.Documents.Text;using GrapeCity.Documents.Imaging;using GrapeCity.Documents.Imaging.Exif;using GCTEXT = GrapeCity.Documents.Text;
namespace DsImagingWeb.Demos{    // Clear all Exif tags found in an image.    // This sample is almost identical to @(ShowExif} but prior to printing    // Exif tags found in the image it clears all those tags.    // The expected result is that no tags are found.    public class ClearExif    {        public GcBitmap GenerateImage(Size pixelSize, float dpi, bool opaque, string[] sampleParams = null)        {            var pad = 20;            var side = pixelSize.Width / 3;            var bmp = new GcBitmap(pixelSize.Width, pixelSize.Height, true, dpi, dpi);            using (var g = bmp.CreateGraphics(Color.White))            using (var testImage = new GcBitmap(Path.Combine("Resources", "ImagesBis", "fire.jpg")))            {                // Remove all existing values from the image's Exif profile:                testImage.ExifProfile.Clear();                // Note: Individual tags can be removed via testImage.ExifProfile.RemoveValue(tag);
                // The remaining code is same as in ShowExif:                var tl = g.CreateTextLayout();                tl.DefaultFormat.Font = GCTEXT.Font.FromFile(Path.Combine("Resources", "Fonts", "FreeSerif.ttf"));                tl.DefaultFormat.FontSize = 11;                tl.DefaultTabStops = 160;                tl.MarginTop = pad;                tl.MarginBottom = pad;                tl.MarginLeft = pad * 2 + side;                tl.MarginRight = pad;                tl.MaxWidth = pixelSize.Width;                AppendExifData(tl, testImage.ExifProfile);                g.DrawImage(testImage, new RectangleF(pad, pad, side, side), null, ImageAlign.ScaleImage);                if (tl.Lines.Count == 0)                    tl.AppendLine("No EXIF tags found.");                g.DrawTextLayout(tl, PointF.Empty);            }            return bmp;        }
        void AppendExifData(TextLayout tl, ExifProfile ep)        {            Append(tl, ep, ExifTag.Make, ep.Make);            Append(tl, ep, ExifTag.Model, ep.Model);            Append(tl, ep, ExifTag.XResolution, ep.XResolution?.ToString());            Append(tl, ep, ExifTag.YResolution, ep.YResolution?.ToString());            Append(tl, ep, ExifTag.ResolutionUnit, ep.ResolutionUnit.ToString());            Append(tl, ep, ExifTag.Software, ep.Software);            Append(tl, ep, ExifTag.DateTime, ep.DateTimeRaw);            Append(tl, ep, ExifTag.Artist, ep.Artist);            Append(tl, ep, ExifTag.Copyright, ep.Copyright);            Append(tl, ep, ExifTag.ExposureTime, ep.ExposureTime?.ToString());            Append(tl, ep, ExifTag.FNumber, ep.FNumber?.ToString());            Append(tl, ep, ExifTag.ExposureProgram, ep.ExposureProgram.ToString());            Append(tl, ep, ExifTag.PhotographicSensitivity, ep.PhotographicSensitivity?.ToString());            Append(tl, ep, ExifTag.ExifVersion, ep.ExifVersion);            Append(tl, ep, ExifTag.DateTimeOriginal, ep.DateTimeOriginalRaw);            Append(tl, ep, ExifTag.DateTimeDigitized, ep.DateTimeDigitizedRaw);            Append(tl, ep, ExifTag.ShutterSpeedValue, ep.ShutterSpeedValue?.ToString());            Append(tl, ep, ExifTag.ApertureValue, ep.ApertureValue?.ToString());            Append(tl, ep, ExifTag.ExposureBiasValue, ep.ExposureBiasValue?.ToString());            Append(tl, ep, ExifTag.MaxApertureValue, ep.MaxApertureValue?.ToString());            Append(tl, ep, ExifTag.MeteringMode, ep.MeteringMode.ToString());            Append(tl, ep, ExifTag.LightSource, ep.LightSource.ToString());            Append(tl, ep, ExifTag.Flash, ep.Flash.ToString());            Append(tl, ep, ExifTag.FocalLength, ep.FocalLength?.ToString());            // First 8 symbols in UserComment specify encoding:            Append(tl, ep, ExifTag.UserComment, ep.UserComment?.Substring(8));            Append(tl, ep, ExifTag.SubsecTimeOriginal, ep.SubsecTimeOriginal?.ToString());            Append(tl, ep, ExifTag.SubsecTimeDigitized, ep.SubsecTimeDigitized?.ToString());            Append(tl, ep, ExifTag.ColorSpace, ep.ColorSpace.ToString());            Append(tl, ep, ExifTag.SensingMethod, ep.SensingMethod.ToString());            Append(tl, ep, ExifTag.FileSource, ep.FileSource.ToString());            Append(tl, ep, ExifTag.SceneType, ep.SceneType?.ToString());            Append(tl, ep, ExifTag.CFAPattern, ep[ExifTag.CFAPattern]?.ToString());            Append(tl, ep, ExifTag.CustomRendered, ep.CustomRendered.ToString());            Append(tl, ep, ExifTag.ExposureMode, ep.ExposureMode.ToString());            Append(tl, ep, ExifTag.WhiteBalance, ep.WhiteBalance.ToString());            Append(tl, ep, ExifTag.DigitalZoomRatio, ep.DigitalZoomRatio?.ToString());            Append(tl, ep, ExifTag.FocalLengthIn35mmFilm, ep.FocalLengthIn35mmFilm?.ToString());            Append(tl, ep, ExifTag.SceneCaptureType, ep.SceneCaptureType.ToString());            Append(tl, ep, ExifTag.Contrast, ep.Contrast.ToString());            Append(tl, ep, ExifTag.Saturation, ep.Saturation.ToString());            Append(tl, ep, ExifTag.Sharpness, ep.Sharpness.ToString());            Append(tl, ep, ExifTag.SubjectDistanceRange, ep.SubjectDistanceRange.ToString());            Append(tl, ep, ExifTag.BodySerialNumber, ep.BodySerialNumber);            Append(tl, ep, ExifTag.LensSpecification, ep[ExifTag.LensSpecification]?.ToString());            Append(tl, ep, ExifTag.LensModel, ep.LensModel);        }
        void Append(TextLayout tl, ExifProfile ep, ExifTag tag, string text)        {            if (ep.HasValue(tag))            {                tl.AppendLine(tag.ToString() + '\t' + text);            }        }    }}