tsai
/
ImageSharp
mirror of https://github.com/SixLabors/ImageSharp
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

Move resolution related methods to the extensions

pull/1570/head
Ildar Khayrutdinov 5 years ago
parent
a16fa9ece2
commit
c14b7eb31f
2 changed files with 103 additions and 94 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 96
      src/ImageSharp/Formats/Tiff/TiffFrameMetadata.cs
  2. 101
      src/ImageSharp/Formats/Tiff/TiffFrameMetadataResolutionExtensions.cs

96
src/ImageSharp/Formats/Tiff/TiffFrameMetadata.cs
View File

@ -3,7 +3,6 @@
using System.Collections.Generic;
using SixLabors.ImageSharp.Common.Helpers;
using SixLabors.ImageSharp.Formats.Experimental.Tiff.Constants;
using SixLabors.ImageSharp.Metadata;
using SixLabors.ImageSharp.Metadata.Profiles.Exif;
@ -16,7 +15,7 @@ namespace SixLabors.ImageSharp.Formats.Experimental.Tiff
public class TiffFrameMetadata : IDeepCloneable
{
// 2 (Inch)
private const ushort DefaultResolutionUnit = 2;
internal const ushort DefaultResolutionUnit = 2;
private const TiffPlanarConfiguration DefaultPlanarConfiguration = TiffPlanarConfiguration.Chunky;
@ -168,18 +167,7 @@ namespace SixLabors.ImageSharp.Formats.Experimental.Tiff
/// <summary>
/// Gets the unit of measurement for XResolution and YResolution.
/// </summary>
public PixelResolutionUnit ResolutionUnit
{
get
{
if (!this.TryGetSingle(ExifTag.ResolutionUnit, out ushort res))
{
res = DefaultResolutionUnit;
}
return (PixelResolutionUnit)(res - 1);
}
}
public PixelResolutionUnit ResolutionUnit => this.GetResolutionUnit();
/// <summary>
/// Gets or sets the name and version number of the software package(s) used to create the image.
@ -247,7 +235,6 @@ namespace SixLabors.ImageSharp.Formats.Experimental.Tiff
/// </summary>
public TiffSampleFormat[] SampleFormat => this.GetEnumArray<TiffSampleFormat, ushort>(ExifTag.SampleFormat, true);
/// <summary>
/// Clears the metadata.
/// </summary>
@ -288,84 +275,5 @@ namespace SixLabors.ImageSharp.Formats.Experimental.Tiff
return new TiffFrameMetadata() { FrameTags = tags };
}
internal void SetResolutions(PixelResolutionUnit unit, double horizontal, double vertical)
{
switch (unit)
{
case PixelResolutionUnit.AspectRatio:
case PixelResolutionUnit.PixelsPerInch:
case PixelResolutionUnit.PixelsPerCentimeter:
break;
case PixelResolutionUnit.PixelsPerMeter:
{
unit = PixelResolutionUnit.PixelsPerCentimeter;
horizontal = UnitConverter.MeterToCm(horizontal);
vertical = UnitConverter.MeterToCm(vertical);
}
break;
default:
unit = PixelResolutionUnit.PixelsPerInch;
break;
}
this.SetSingle(ExifTag.ResolutionUnit, (ushort)unit + 1);
this.SetResolution(ExifTag.XResolution, horizontal);
this.SetResolution(ExifTag.YResolution, vertical);
}
private double? GetResolution(ExifTag tag)
{
if (!this.TryGetSingle(tag, out Rational resolution))
{
return null;
}
double res = resolution.ToDouble();
switch (this.ResolutionUnit)
{
case PixelResolutionUnit.AspectRatio:
return 0;
case PixelResolutionUnit.PixelsPerCentimeter:
return UnitConverter.CmToInch(res);
case PixelResolutionUnit.PixelsPerMeter:
return UnitConverter.MeterToInch(res);
case PixelResolutionUnit.PixelsPerInch:
default:
// DefaultResolutionUnit is Inch
return res;
}
}
private void SetResolution(ExifTag tag, double? value)
{
if (value == null)
{
this.Remove(tag);
return;
}
else
{
double res = value.Value;
switch (this.ResolutionUnit)
{
case PixelResolutionUnit.AspectRatio:
res = 0;
break;
case PixelResolutionUnit.PixelsPerCentimeter:
res = UnitConverter.InchToCm(res);
break;
case PixelResolutionUnit.PixelsPerMeter:
res = UnitConverter.InchToMeter(res);
break;
case PixelResolutionUnit.PixelsPerInch:
default:
break;
}
this.SetSingle(tag, new Rational(res));
}
}
}
}

101
src/ImageSharp/Formats/Tiff/TiffFrameMetadataResolutionExtensions.cs
View File

@ -0,0 +1,101 @@
// Copyright (c) Six Labors.
// Licensed under the Apache License, Version 2.0.
using SixLabors.ImageSharp.Common.Helpers;
using SixLabors.ImageSharp.Metadata;
using SixLabors.ImageSharp.Metadata.Profiles.Exif;
namespace SixLabors.ImageSharp.Formats.Experimental.Tiff
{
internal static class TiffFrameMetadataResolutionExtensions
{
public static void SetResolutions(this TiffFrameMetadata meta, PixelResolutionUnit unit, double horizontal, double vertical)
{
switch (unit)
{
case PixelResolutionUnit.AspectRatio:
case PixelResolutionUnit.PixelsPerInch:
case PixelResolutionUnit.PixelsPerCentimeter:
break;
case PixelResolutionUnit.PixelsPerMeter:
{
unit = PixelResolutionUnit.PixelsPerCentimeter;
horizontal = UnitConverter.MeterToCm(horizontal);
vertical = UnitConverter.MeterToCm(vertical);
}
break;
default:
unit = PixelResolutionUnit.PixelsPerInch;
break;
}
meta.SetSingle(ExifTag.ResolutionUnit, (ushort)unit + 1);
meta.SetResolution(ExifTag.XResolution, horizontal);
meta.SetResolution(ExifTag.YResolution, vertical);
}
public static PixelResolutionUnit GetResolutionUnit(this TiffFrameMetadata meta)
{
if (!meta.TryGetSingle(ExifTag.ResolutionUnit, out ushort res))
{
res = TiffFrameMetadata.DefaultResolutionUnit;
}
return (PixelResolutionUnit)(res - 1);
}
public static double? GetResolution(this TiffFrameMetadata meta, ExifTag tag)
{
if (!meta.TryGetSingle(tag, out Rational resolution))
{
return null;
}
double res = resolution.ToDouble();
switch (meta.ResolutionUnit)
{
case PixelResolutionUnit.AspectRatio:
return 0;
case PixelResolutionUnit.PixelsPerCentimeter:
return UnitConverter.CmToInch(res);
case PixelResolutionUnit.PixelsPerMeter:
return UnitConverter.MeterToInch(res);
case PixelResolutionUnit.PixelsPerInch:
default:
// DefaultResolutionUnit is Inch
return res;
}
}
private static void SetResolution(this TiffFrameMetadata meta, ExifTag tag, double? value)
{
if (value == null)
{
meta.Remove(tag);
return;
}
else
{
double res = value.Value;
switch (meta.ResolutionUnit)
{
case PixelResolutionUnit.AspectRatio:
res = 0;
break;
case PixelResolutionUnit.PixelsPerCentimeter:
res = UnitConverter.InchToCm(res);
break;
case PixelResolutionUnit.PixelsPerMeter:
res = UnitConverter.InchToMeter(res);
break;
case PixelResolutionUnit.PixelsPerInch:
default:
break;
}
meta.SetSingle(tag, new Rational(res));
}
}
}
}
Write Preview
Loading…
Cancel
Save