mirror of
https://github.com/UglyToad/PdfPig.git
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c495065178
- begin adding support for extended graphics state (the 'gs' operator) including setting the font #39. - apply page level rotation to the glyph bounding box and width to get correct glyph sizes #41. - wrap page rotation in a value type to ensure the value is restricted to right angle rotations and provide convenience members #42. - fix bug where system font finder never worked for truetype fonts because it began reading the file from the wrong offset.
98 lines
3.6 KiB
C#
98 lines
3.6 KiB
C#
// ReSharper disable RedundantDefaultMemberInitializer
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namespace UglyToad.PdfPig.Graphics
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{
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using Core;
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using Operations.SpecialGraphicsState;
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using PdfPig.Core;
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using Tokens;
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/// <summary>
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/// The current state of text related parameters for a content stream.
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/// </summary>
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public class CurrentFontState : IDeepCloneable<CurrentFontState>
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{
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/// <summary>
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/// Whether the font comes from the extended graphics state via the <see cref="SetGraphicsStateParametersFromDictionary"/> operator.
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/// </summary>
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public bool FromExtendedGraphicsState { get; set; } = false;
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/// <summary>
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/// A value in unscaled text space units which is added to the horizontal (or vertical if in vertical writing mode)
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/// glyph displacement.
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/// </summary>
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/// <remarks>
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/// In horizontal writing mode a positive value will expand the distance between letters/glyphs.
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/// Default value 0.
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/// </remarks>
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public decimal CharacterSpacing { get; set; } = 0;
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/// <summary>
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/// As for <see cref="CharacterSpacing"/> but applies only for the space character (32).
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/// </summary>
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/// <remarks>
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/// Default value 0.
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/// </remarks>
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public decimal WordSpacing { get; set; } = 0;
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/// <summary>
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/// Adjusts the width of glyphs/letters by stretching (or compressing) them horizontally.
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/// Value is a percentage of the normal width.
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/// </summary>
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public decimal HorizontalScaling { get; set; } = 100;
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/// <summary>
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/// The vertical distance in unscaled text space units between the baselines of lines of text.
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/// </summary>
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public decimal Leading { get; set; }
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/// <summary>
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/// The name of the currently active font.
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/// </summary>
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public NameToken FontName { get; set; }
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/// <summary>
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/// The current font size.
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/// </summary>
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public decimal FontSize { get; set; }
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/// <summary>
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/// The <see cref="TextRenderingMode"/> for glyph outlines.
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/// </summary>
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/// <remarks>
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/// When the rendering mode requires filling the current non-stroking color in the state is used.<br/>
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/// When the rendering mode requires stroking the current stroking color in the state is used.<br/>
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/// The rendering mode has no impact on Type 3 fonts.
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/// </remarks>
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public TextRenderingMode TextRenderingMode { get; set; } = TextRenderingMode.Fill;
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/// <summary>
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/// The distance in unscaled text space units to move the default baseline either up or down.
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/// </summary>
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/// <remarks>
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/// Always applies to the vertical coordinate irrespective or writing mode.
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/// </remarks>
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public decimal Rise { get; set; }
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/// <summary>
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/// Are all glyphs in a text object treated as a single elementary object for the purpose of the transparent imaging model?
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/// </summary>
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public bool Knockout { get; set; }
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/// <inheritdoc />
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public CurrentFontState DeepClone()
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{
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return new CurrentFontState
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{
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CharacterSpacing = CharacterSpacing,
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TextRenderingMode = TextRenderingMode,
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Rise = Rise,
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Leading = Leading,
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WordSpacing = WordSpacing,
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FontName = FontName,
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FontSize = FontSize,
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HorizontalScaling = HorizontalScaling,
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Knockout = Knockout
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};
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}
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}
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} |