86 lines
2.7 KiB
C#
86 lines
2.7 KiB
C#
namespace Age.Engine.Model;
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[Flags]
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public enum AdvTextOverflowFlags
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{
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None = 0,
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Horizontal = 1,
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Vertical = 2,
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}
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/// <summary>
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/// Native AGE's 20-byte live ADV glyph record. Rectangle values are edges, matching the
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/// retained-object bind ABI; they are not x/y/width/height values.
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/// </summary>
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public readonly record struct AdvRetainedGlyphRecord(
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int PublicationChainFlag,
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int Left,
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int Top,
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int Right,
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int Bottom)
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{
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public int Width => Right - Left;
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public int Height => Bottom - Top;
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public bool PublishesNextInSameTick => PublicationChainFlag == 1;
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}
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/// <summary>The script-owned retained-object binding associated with one live ADV layout.</summary>
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public readonly record struct AdvTextLayoutPresentationBinding(
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int LayoutSlot,
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int SourceSurfaceSlot,
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long FirstObjectHandle,
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long ObjectCapacity,
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long WaitIndicatorObjectHandle,
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int ResetCursorX,
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int ResetCursorY);
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/// <summary>
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/// Transient publication crop. Native records retain measured cell edges, but a backend mask/effect can
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/// carry ink outside that cell. Keeping the expanded crop separate preserves the native layout ABI.
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/// </summary>
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public readonly record struct AdvRetainedGlyphPresentationRect(
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int Left,
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int Top,
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int Right,
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int Bottom)
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{
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public int Width => Right - Left;
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public int Height => Bottom - Top;
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}
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public readonly record struct AdvRetainedGlyphPlacement(
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AdvRetainedGlyphRecord Record,
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AdvRetainedGlyphPresentationRect PresentationRect,
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int LayoutOriginX,
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int LayoutOriginY);
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public readonly record struct AdvRetainedTextRunResult(
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int LayoutSlot,
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int FirstGlyphIndex,
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int GlyphCount,
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int CursorX,
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int CursorY);
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/// <summary>Platform-neutral rules established from AGE's native retained-glyph workers.</summary>
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public static class AdvRetainedTextContract
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{
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public static AdvTextOverflowFlags CheckOverflow(
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int rightBound, int bottomBound, int glyphRight, int glyphBottom)
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{
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var result = AdvTextOverflowFlags.None;
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if (rightBound < glyphRight) result |= AdvTextOverflowFlags.Horizontal;
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if (bottomBound < glyphBottom) result |= AdvTextOverflowFlags.Vertical;
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return result;
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}
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/// <summary>
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/// CP932 closing punctuation which AGE keeps on the preceding horizontal line even when the
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/// current glyph crosses the right bound.
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/// </summary>
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public static bool PreventsHorizontalWrapBefore(ushort cp932)
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=> cp932 is 0x8141 or 0x8142 or 0x8176; // 、 。 」
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public static bool TimedPublicationHandleExists(int revealIndex, long objectCapacity)
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=> revealIndex >= 0 && revealIndex < objectCapacity;
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}
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