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1993 行
66 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using AOT;
using Unity.UIWidgets.async;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.services;
using UnityEngine;
namespace Unity.UIWidgets.ui {
public enum FontStyle {
normal,
italic
}
public class FontWeight {
public static readonly FontWeight w100 = new FontWeight(0);
public static readonly FontWeight w200 = new FontWeight(1);
public static readonly FontWeight w300 = new FontWeight(2);
public static readonly FontWeight w400 = new FontWeight(3);
public static readonly FontWeight w500 = new FontWeight(4);
public static readonly FontWeight w600 = new FontWeight(5);
public static readonly FontWeight w700 = new FontWeight(6);
public static readonly FontWeight w800 = new FontWeight(7);
public static readonly FontWeight w900 = new FontWeight(8);
public static readonly FontWeight normal = w400;
public static readonly FontWeight bold = w700;
public static readonly List<FontWeight> values = new List<FontWeight> {
w100, w200, w300, w400, w500, w600, w700, w800, w900
};
public static readonly Dictionary<int, string> map = new Dictionary<int, string> {
{0, "FontWeight.w100"},
{1, "FontWeight.w200"},
{2, "FontWeight.w300"},
{3, "FontWeight.w400"},
{4, "FontWeight.w500"},
{5, "FontWeight.w600"},
{6, "FontWeight.w700"},
{7, "FontWeight.w800"},
{8, "FontWeight.w900"}
};
public readonly int index;
public FontWeight(int index) {
this.index = index;
}
public static FontWeight lerp(FontWeight a, FontWeight b, float t) {
if (a == null && b == null) {
return null;
}
return values[
MathUtils.lerpNullableFloat(a?.index ?? normal.index, b?.index ?? normal.index, t: t).round()
.clamp(0, 8)];
}
public override string ToString() {
return map[key: index];
}
}
public class FontFeature : IEquatable<FontFeature> {
internal static readonly int _kEncodedSize = 8;
public readonly string feature;
public readonly int value;
public FontFeature(string feature, int value = 1) {
D.assert(feature != null);
D.assert(feature.Length == 4);
D.assert(value >= 0);
this.feature = feature;
this.value = value;
}
public bool Equals(FontFeature other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return feature == other.feature && value == other.value;
}
public FontFeature enable(string feature) {
return new FontFeature(feature: feature);
}
public FontFeature disable(string feature) {
return new FontFeature(feature: feature, 0);
}
public FontFeature randomize() {
return new FontFeature("rand");
}
public static FontFeature stylisticSet(int value) {
D.assert(value >= 1);
D.assert(value <= 20);
return new FontFeature($"ss{value.ToString().PadLeft(2, '0')}");
}
public FontFeature slashedZero() {
return new FontFeature("zero");
}
public FontFeature oldstyleFigures() {
return new FontFeature("onum");
}
public FontFeature proportionalFigures() {
return new FontFeature("pnum");
}
public FontFeature tabularFigures() {
return new FontFeature("tnum");
}
internal void _encode(byte[] byteData) {
D.assert(() => {
foreach (var charUnit in feature.ToCharArray()) {
if (charUnit <= 0x20 && charUnit >= 0x7F) {
return false;
}
}
return true;
});
for (var i = 0; i < 4; i++) {
byteData[i] = (byte) feature[index: i];
}
byteData[4] = (byte) (value >> 0);
byteData[5] = (byte) (value >> 8);
byteData[6] = (byte) (value >> 16);
byteData[7] = (byte) (value >> 24);
}
public override string ToString() {
return $"FontFeature({feature}, {value})";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((FontFeature) obj);
}
public override int GetHashCode() {
unchecked {
return ((feature != null ? feature.GetHashCode() : 0) * 397) ^ value;
}
}
}
public enum TextAlign {
left,
right,
center,
justify,
start,
end
}
public enum TextBaseline {
alphabetic,
ideographic
}
public class TextDecoration : IEquatable<TextDecoration> {
public static readonly TextDecoration none = new TextDecoration(0x0);
public static readonly TextDecoration underline = new TextDecoration(0x1);
public static readonly TextDecoration overline = new TextDecoration(0x2);
public static readonly TextDecoration lineThrough = new TextDecoration(0x4);
internal readonly int _mask;
public TextDecoration(int _mask) {
this._mask = _mask;
}
public bool Equals(TextDecoration other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return _mask == other._mask;
}
public TextDecoration combine(List<TextDecoration> decorations) {
var mask = 0;
foreach (var decoration in decorations) {
mask |= decoration._mask;
}
return new TextDecoration(_mask: mask);
}
public bool contains(TextDecoration other) {
return (_mask | other._mask) == _mask;
}
public override string ToString() {
if (_mask == 0) {
return "TextDecoration.none";
}
var values = new List<string>();
if ((_mask & underline._mask) != 0) {
values.Add("underline");
}
if ((_mask & overline._mask) != 0) {
values.Add("overline");
}
if ((_mask & lineThrough._mask) != 0) {
values.Add("lineThrough");
}
if (values.Count == 1) {
return $"TextDecoration.{values[0]}";
}
return $"TextDecoration.combine([{string.Join(", ", values: values)}])";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((TextDecoration) obj);
}
public override int GetHashCode() {
return _mask;
}
}
public enum TextDecorationStyle {
solid,
doubleLine,
dotted,
dashed,
wavy
}
public class TextHeightBehavior : IEquatable<TextHeightBehavior> {
public readonly bool applyHeightToFirstAscent;
public readonly bool applyHeightToLastDescent;
public TextHeightBehavior(
bool applyHeightToFirstAscent = true,
bool applyHeightToLastDescent = true
) {
this.applyHeightToFirstAscent = applyHeightToFirstAscent;
this.applyHeightToLastDescent = applyHeightToLastDescent;
}
public bool Equals(TextHeightBehavior other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return applyHeightToFirstAscent == other.applyHeightToFirstAscent &&
applyHeightToLastDescent == other.applyHeightToLastDescent;
}
public static TextHeightBehavior fromEncoded(int encoded) {
return new TextHeightBehavior((encoded & 0x1) == 0, (encoded & 0x2) == 0);
}
public int encode() {
return (applyHeightToFirstAscent ? 0 : 1 << 0) | (applyHeightToLastDescent ? 0 : 1 << 1);
}
public override string ToString() {
return "TextHeightBehavior(\n" +
$" applyHeightToFirstAscent: {applyHeightToFirstAscent}, \n" +
$" applyHeightToLastDescent: {applyHeightToLastDescent} \n" +
")";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((TextHeightBehavior) obj);
}
public override int GetHashCode() {
unchecked {
return (applyHeightToFirstAscent.GetHashCode() * 397) ^ applyHeightToLastDescent.GetHashCode();
}
}
}
[StructLayout(LayoutKind.Sequential)]
public struct Float32List {
public IntPtr data;
public int length;
}
public static partial class ui_ {
static readonly object VoidObject = new object();
static readonly byte[] _fontChangeMessage = JSONMessageCodec.instance.encodeMessage(
new Dictionary<string, string> {
{"type", "fontsChange"}
});
internal static int[] _encodeTextStyle(
Color color,
TextDecoration decoration,
Color decorationColor,
TextDecorationStyle? decorationStyle,
float? decorationThickness,
FontWeight fontWeight,
FontStyle? fontStyle,
TextBaseline? textBaseline,
string fontFamily,
List<string> fontFamilyFallback,
float? fontSize,
float? letterSpacing,
float? wordSpacing,
float? height,
Locale locale,
Paint background,
Paint foreground,
List<Shadow> shadows,
List<FontFeature> fontFeatures
) {
var result = new int[8];
if (color != null) {
result[0] |= 1 << 1;
result[1] = (int) color.value;
}
if (decoration != null) {
result[0] |= 1 << 2;
result[2] = decoration._mask;
}
if (decorationColor != null) {
result[0] |= 1 << 3;
result[3] = (int) decorationColor.value;
}
if (decorationStyle != null) {
result[0] |= 1 << 4;
result[4] = (int) decorationStyle;
}
if (fontWeight != null) {
result[0] |= 1 << 5;
result[5] = fontWeight.index;
}
if (fontStyle != null) {
result[0] |= 1 << 6;
result[6] = (int) fontStyle;
}
if (textBaseline != null) {
result[0] |= 1 << 7;
result[7] = (int) textBaseline;
}
if (decorationThickness != null) {
result[0] |= 1 << 8;
}
if (fontFamily != null || fontFamilyFallback != null && fontFamilyFallback.isNotEmpty()) {
result[0] |= 1 << 9;
// Passed separately to native.
}
if (fontSize != null) {
result[0] |= 1 << 10;
// Passed separately to native.
}
if (letterSpacing != null) {
result[0] |= 1 << 11;
// Passed separately to native.
}
if (wordSpacing != null) {
result[0] |= 1 << 12;
// Passed separately to native.
}
if (height != null) {
result[0] |= 1 << 13;
// Passed separately to native.
}
if (locale != null) {
result[0] |= 1 << 14;
// Passed separately to native.
}
if (background != null) {
result[0] |= 1 << 15;
// Passed separately to native.
}
if (foreground != null) {
result[0] |= 1 << 16;
// Passed separately to native.
}
if (shadows != null) {
result[0] |= 1 << 17;
// Passed separately to native.
}
if (fontFeatures != null) {
result[0] |= 1 << 18;
// Passed separately to native.
}
return result;
}
internal static List<int> _encodeParagraphStyle(
TextAlign? textAlign,
TextDirection? textDirection,
int? maxLines,
string fontFamily,
float? fontSize,
float? height,
TextHeightBehavior textHeightBehavior,
FontWeight fontWeight,
FontStyle? fontStyle,
StrutStyle strutStyle,
string ellipsis,
Locale locale
) {
var result = new List<int>(new int[7]);
if (textAlign != null) {
result[0] |= 1 << 1;
result[1] = (int) textAlign;
}
if (textDirection != null) {
result[0] |= 1 << 2;
result[2] = (int) textDirection;
}
if (fontWeight != null) {
result[0] |= 1 << 3;
result[3] = fontWeight.index;
}
if (fontStyle != null) {
result[0] |= 1 << 4;
result[4] = (int) fontStyle;
}
if (maxLines != null) {
result[0] |= 1 << 5;
result[5] = maxLines.Value;
}
if (textHeightBehavior != null) {
result[0] |= 1 << 6;
result[6] = textHeightBehavior.encode();
}
if (fontFamily != null) {
result[0] |= 1 << 7;
// Passed separately to native.
}
if (fontSize != null) {
result[0] |= 1 << 8;
// Passed separately to native.
}
if (height != null) {
result[0] |= 1 << 9;
// Passed separately to native.
}
if (strutStyle != null) {
result[0] |= 1 << 10;
// Passed separately to native.
}
if (ellipsis != null) {
result[0] |= 1 << 11;
// Passed separately to native.
}
if (locale != null) {
result[0] |= 1 << 12;
// Passed separately to native.
}
return result;
}
internal static unsafe void setFloat(this byte[] bytes, int byteOffset, float value) {
D.assert(byteOffset >= 0 && byteOffset + 4 < bytes.Length);
#if UNITY_ANDROID
byte[] vOut = BitConverter.GetBytes(value);
for (int i = 0; i < vOut.Length; i++) {
bytes[byteOffset + i] = vOut[i];
}
#else
fixed (byte* b = &bytes[byteOffset]) {
*(float*) b = value;
}
#endif
}
internal static byte[] _encodeStrut(
string fontFamily,
List<string> fontFamilyFallback,
float? fontSize,
float? height,
float? leading,
FontWeight fontWeight,
FontStyle? fontStyle,
bool? forceStrutHeight) {
if (fontFamily == null &&
fontSize == null &&
height == null &&
leading == null &&
fontWeight == null &&
fontStyle == null &&
forceStrutHeight == null) {
return new byte[0];
}
var data = new byte[15]; // Max size is 15 bytes
var bitmask = 0; // 8 bit mask
var byteCount = 1;
if (fontWeight != null) {
bitmask |= 1 << 0;
data[byteCount] = (byte) fontWeight.index;
byteCount += 1;
}
if (fontStyle != null) {
bitmask |= 1 << 1;
data[byteCount] = (byte) fontStyle;
byteCount += 1;
}
if (fontFamily != null || fontFamilyFallback != null && fontFamilyFallback.isNotEmpty()) {
bitmask |= 1 << 2;
// passed separately to native
}
if (fontSize != null) {
bitmask |= 1 << 3;
data.setFloat(byteOffset: byteCount, (float) fontSize);
byteCount += 4;
}
if (height != null) {
bitmask |= 1 << 4;
data.setFloat(byteOffset: byteCount, (float) height);
byteCount += 4;
}
if (leading != null) {
bitmask |= 1 << 5;
data.setFloat(byteOffset: byteCount, (float) leading);
byteCount += 4;
}
if (forceStrutHeight != null) {
bitmask |= 1 << 6;
// We store this boolean directly in the bitmask since there is
// extra space in the 16 bit int.
bitmask |= (forceStrutHeight.Value ? 1 : 0) << 7;
}
data[0] = (byte) bitmask;
return data.range(0, length: byteCount);
}
public static unsafe Future loadFontFromList(byte[] list, string fontFamily = null) {
return _futurize((_Callback<object> callback) => {
// var completer = new Promise(true);
var completerHandle = GCHandle.Alloc(value: callback);
fixed (byte* listPtr = list) {
Font_LoadFontFromList(list: listPtr, size: list.Length, callback: _loadFontCallback,
(IntPtr) completerHandle,
fontFamily: fontFamily);
}
return null;
});
}
[MonoPInvokeCallback(typeof(_loadFontFromListCallback))]
static void _loadFontCallback(IntPtr callbackHandle) {
var completerHandle = (GCHandle) callbackHandle;
var callback = (_Callback<object>) completerHandle.Target;
completerHandle.Free();
_sendFontChangeMessage();
try {
callback(result: VoidObject);
}
catch (Exception ex) {
Debug.LogException(exception: ex);
}
}
static void _sendFontChangeMessage() {
Window.instance.onPlatformMessage?.Invoke("uiwidgets/system", data: _fontChangeMessage,
_ => { });
}
[DllImport(dllName: NativeBindings.dllName)]
static extern unsafe void Font_LoadFontFromList(byte* list, int size, _loadFontFromListCallback callback,
IntPtr callbackHandle,
string fontFamily);
public static float[] toFloatArrayAndFree(this Float32List data) {
var result = new float[data.length];
Marshal.Copy(source: data.data, destination: result, 0, length: data.length);
Lists_Free(data: data.data);
return result;
}
[DllImport(dllName: NativeBindings.dllName)]
public static extern void Lists_Free(IntPtr data);
delegate void _loadFontFromListCallback(IntPtr callbackHandle);
}
public class TextStyle : IEquatable<TextStyle> {
internal readonly Paint _background;
internal readonly float? _decorationThickness;
internal readonly int[] _encoded;
internal readonly string _fontFamily;
internal readonly List<string> _fontFamilyFallback;
internal readonly List<FontFeature> _fontFeatures;
internal readonly float? _fontSize;
internal readonly Paint _foreground;
internal readonly float? _height;
internal readonly float? _letterSpacing;
internal readonly Locale _locale;
internal readonly List<Shadow> _shadows;
internal readonly float? _wordSpacing;
public TextStyle(
Color color = null,
TextDecoration decoration = null,
Color decorationColor = null,
TextDecorationStyle? decorationStyle = null,
float? decorationThickness = null,
FontWeight fontWeight = null,
FontStyle? fontStyle = null,
TextBaseline? textBaseline = null,
string fontFamily = null,
List<string> fontFamilyFallback = null,
float? fontSize = null,
float? letterSpacing = null,
float? wordSpacing = null,
float? height = null,
Locale locale = null,
Paint background = null,
Paint foreground = null,
List<Shadow> shadows = null,
List<FontFeature> fontFeatures = null
) {
D.assert(color == null || foreground == null, () =>
"Cannot provide both a color and a foreground\n" +
"The color argument is just a shorthand for \"foreground: Paint()..color = color\"."
);
_encoded = ui_._encodeTextStyle(
color: color,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
decorationThickness: decorationThickness,
fontWeight: fontWeight,
fontStyle: fontStyle,
textBaseline: textBaseline,
fontFamily: fontFamily,
fontFamilyFallback: fontFamilyFallback,
fontSize: fontSize,
letterSpacing: letterSpacing,
wordSpacing: wordSpacing,
height: height,
locale: locale,
background: background,
foreground: foreground,
shadows: shadows,
fontFeatures: fontFeatures
);
_fontFamily = fontFamily ?? "";
_fontFamilyFallback = fontFamilyFallback;
_fontSize = fontSize;
_letterSpacing = letterSpacing;
_wordSpacing = wordSpacing;
_height = height;
_decorationThickness = decorationThickness;
_locale = locale;
_background = background;
_foreground = foreground;
_shadows = shadows;
_fontFeatures = fontFeatures;
}
public bool Equals(TextStyle other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return _encoded.equalsList(list: other._encoded) && Equals(objA: _fontFamily, objB: other._fontFamily) &&
_fontFamilyFallback.equalsList(list: other._fontFamilyFallback) &&
Nullable.Equals(n1: _fontSize, n2: other._fontSize) &&
Nullable.Equals(n1: _letterSpacing, n2: other._letterSpacing) &&
Nullable.Equals(n1: _wordSpacing, n2: other._wordSpacing) &&
Nullable.Equals(n1: _height, n2: other._height) &&
Nullable.Equals(n1: _decorationThickness, n2: other._decorationThickness) &&
Equals(objA: _locale, objB: other._locale) && Equals(objA: _background, objB: other._background) &&
Equals(objA: _foreground, objB: other._foreground) && _shadows.equalsList(list: other._shadows) &&
_fontFeatures.equalsList(list: other._fontFeatures);
}
public override string ToString() {
var color = (_encoded[0] & 0x00002) == 0x00002
? new Color((uint) _encoded[1]).ToString()
: "unspecified";
var decoration = (_encoded[0] & 0x00004) == 0x00004
? new TextDecoration(_encoded[2]).ToString()
: "unspecified";
var decorationColor = (_encoded[0] & 0x00008) == 0x00008
? new Color((uint) _encoded[3]).ToString()
: "unspecified";
var decorationStyle = (_encoded[0] & 0x00010) == 0x00010
? ((TextDecorationStyle) _encoded[4]).ToString()
: "unspecified";
// The decorationThickness is not in encoded order in order to keep it near the other decoration properties.
var decorationThickness = (_encoded[0] & 0x00100) == 0x00100
? _decorationThickness.ToString()
: "unspecified";
var fontWeight = (_encoded[0] & 0x00020) == 0x00020
? FontWeight.values[_encoded[5]].ToString()
: "unspecified";
var fontStyle = (_encoded[0] & 0x00040) == 0x00040
? ((FontStyle) _encoded[6]).ToString()
: "unspecified";
var textBaseline = (_encoded[0] & 0x00080) == 0x00080
? ((TextBaseline) _encoded[7]).ToString()
: "unspecified";
var fontFamily = (_encoded[0] & 0x00200) == 0x00200
&& _fontFamily != null
? _fontFamily
: "unspecified";
var fontFamilyFallback = (_encoded[0] & 0x00200) == 0x00200
&& _fontFamilyFallback != null
&& _fontFamilyFallback.isNotEmpty()
? _fontFamilyFallback.ToString()
: "unspecified";
var fontSize = (_encoded[0] & 0x00400) == 0x00400 ? _fontSize.ToString() : "unspecified";
var letterSpacing = (_encoded[0] & 0x00800) == 0x00800 ? "_letterSpacing}x" : "unspecified";
var wordSpacing = (_encoded[0] & 0x01000) == 0x01000 ? "_wordSpacing}x" : "unspecified";
var height = (_encoded[0] & 0x02000) == 0x02000 ? "_height}x" : "unspecified";
var locale = (_encoded[0] & 0x04000) == 0x04000 ? _locale.ToString() : "unspecified";
var background = (_encoded[0] & 0x08000) == 0x08000 ? _locale.ToString() : "unspecified";
var foreground = (_encoded[0] & 0x10000) == 0x10000 ? _locale.ToString() : "unspecified";
var shadows = (_encoded[0] & 0x20000) == 0x20000 ? _locale.ToString() : "unspecified";
var fontFeatures =
(_encoded[0] & 0x40000) == 0x40000 ? _fontFeatures.ToString() : "unspecified";
return "TextStyle(\n" +
$"color: {color}\n" +
$"decoration: {decoration}\n" +
$"decorationColor: {decorationColor}\n" +
$"decorationStyle: {decorationStyle}\n" +
// The decorationThickness is not in encoded order in order to keep it near the other decoration properties.
$"decorationThickness: {decorationThickness}\n" +
$"fontWeight: {fontWeight}\n" +
$"fontStyle: {fontStyle}\n" +
$"textBaseline: {textBaseline}\n" +
$"fontFamily: {fontFamily}\n" +
$"fontFamilyFallback: {fontFamilyFallback}\n" +
$"fontSize: {fontSize}\n" +
$"letterSpacing: {letterSpacing}\n" +
$"wordSpacing: {wordSpacing}\n" +
$"height: {height}\n" +
$"locale: {locale}\n" +
$"background: {background}\n" +
$"foreground: {foreground}\n" +
$"shadows: {shadows}\n" +
$"fontFeatures: {fontFeatures}\n" +
")";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((TextStyle) obj);
}
public override int GetHashCode() {
unchecked {
var hashCode = _encoded != null ? _encoded.GetHashCode() : 0;
hashCode = (hashCode * 397) ^ (_fontFamily != null ? _fontFamily.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_fontFamilyFallback != null ? _fontFamilyFallback.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ _fontSize.GetHashCode();
hashCode = (hashCode * 397) ^ _letterSpacing.GetHashCode();
hashCode = (hashCode * 397) ^ _wordSpacing.GetHashCode();
hashCode = (hashCode * 397) ^ _height.GetHashCode();
hashCode = (hashCode * 397) ^ _decorationThickness.GetHashCode();
hashCode = (hashCode * 397) ^ (_locale != null ? _locale.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_background != null ? _background.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_foreground != null ? _foreground.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_shadows != null ? _shadows.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_fontFeatures != null ? _fontFeatures.GetHashCode() : 0);
return hashCode;
}
}
}
public class ParagraphStyle : IEquatable<ParagraphStyle> {
internal readonly string _ellipsis;
internal readonly List<int> _encoded;
internal readonly string _fontFamily;
internal readonly float? _fontSize;
internal readonly float? _height;
internal readonly Locale _locale;
internal readonly StrutStyle _strutStyle;
public ParagraphStyle(
TextAlign? textAlign = null,
TextDirection? textDirection = null,
int? maxLines = null,
string fontFamily = null,
float? fontSize = null,
float? height = null,
TextHeightBehavior textHeightBehavior = null,
FontWeight fontWeight = null,
FontStyle? fontStyle = null,
StrutStyle strutStyle = null,
string ellipsis = null,
Locale locale = null
) {
_encoded = ui_._encodeParagraphStyle(
textAlign: textAlign,
textDirection: textDirection,
maxLines: maxLines,
fontFamily: fontFamily,
fontSize: fontSize,
height: height,
textHeightBehavior: textHeightBehavior,
fontWeight: fontWeight,
fontStyle: fontStyle,
strutStyle: strutStyle,
ellipsis: ellipsis,
locale: locale
);
_fontFamily = fontFamily;
_fontSize = fontSize;
_height = height;
_strutStyle = strutStyle;
_ellipsis = ellipsis;
_locale = locale;
}
public bool Equals(ParagraphStyle other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return _encoded.equalsList(list: other._encoded) && _fontFamily == other._fontFamily &&
Nullable.Equals(n1: _fontSize, n2: other._fontSize) &&
Nullable.Equals(n1: _height, n2: other._height) &&
Equals(objA: _strutStyle, objB: other._strutStyle) && _ellipsis == other._ellipsis &&
Equals(objA: _locale, objB: other._locale);
}
public override string ToString() {
var textAlign = (_encoded[0] & 0x002) == 0x002
? ((TextAlign) _encoded[1]).ToString()
: "unspecified";
var textDirection = (_encoded[0] & 0x004) == 0x004
? ((TextDirection) _encoded[2]).ToString()
: "unspecified";
var fontWeight = (_encoded[0] & 0x008) == 0x008
? FontWeight.values[_encoded[3]].ToString()
: "unspecified";
var fontStyle = (_encoded[0] & 0x010) == 0x010
? ((FontStyle) _encoded[4]).ToString()
: "unspecified";
var maxLines = (_encoded[0] & 0x020) == 0x020 ? _encoded[5].ToString() : "unspecified";
var textHeightBehavior = (_encoded[0] & 0x040) == 0x040
? TextHeightBehavior.fromEncoded(_encoded[6]).ToString()
: "unspecified";
var fontFamily = (_encoded[0] & 0x080) == 0x080 ? _fontFamily : "unspecified";
var fontSize = (_encoded[0] & 0x100) == 0x100 ? _fontSize.ToString() : "unspecified";
var height = (_encoded[0] & 0x200) == 0x200 ? $"{_height}x" : "unspecified";
var ellipsis = (_encoded[0] & 0x400) == 0x400 ? _ellipsis : "unspecified";
var locale = (_encoded[0] & 0x800) == 0x800 ? _locale.ToString() : "unspecified";
return "ParagraphStyle(\n" +
$"textAlign: {textAlign}\n" +
$"textDirection: {textDirection}\n" +
$"fontWeight: {fontWeight}\n" +
$"fontStyle: {fontStyle}\n" +
$"maxLines: {maxLines}\n" +
$"textHeightBehavior: {textHeightBehavior}$\n" +
$"fontFamily: {fontFamily}\n" +
$"fontSize: {fontSize}\n" +
$"height: {height}\n" +
$"ellipsis: {ellipsis}\n" +
$"locale: {locale}\n" +
")";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((ParagraphStyle) obj);
}
public override int GetHashCode() {
unchecked {
var hashCode = _encoded != null ? _encoded.GetHashCode() : 0;
hashCode = (hashCode * 397) ^ (_fontFamily != null ? _fontFamily.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ _fontSize.GetHashCode();
hashCode = (hashCode * 397) ^ _height.GetHashCode();
hashCode = (hashCode * 397) ^ (_strutStyle != null ? _strutStyle.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_ellipsis != null ? _ellipsis.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_locale != null ? _locale.GetHashCode() : 0);
return hashCode;
}
}
}
public class StrutStyle : IEquatable<StrutStyle> {
internal readonly byte[] _encoded; // Most of the data for strut is encoded.
internal readonly string _fontFamily;
internal readonly List<string> _fontFamilyFallback;
public StrutStyle(
string fontFamily = null,
List<string> fontFamilyFallback = null,
float? fontSize = null,
float? height = null,
float? leading = null,
FontWeight fontWeight = null,
FontStyle? fontStyle = null,
bool? forceStrutHeight = null
) {
_encoded = ui_._encodeStrut(
fontFamily: fontFamily,
fontFamilyFallback: fontFamilyFallback,
fontSize: fontSize,
height: height,
leading: leading,
fontWeight: fontWeight,
fontStyle: fontStyle,
forceStrutHeight: forceStrutHeight
);
_fontFamily = fontFamily;
_fontFamilyFallback = fontFamilyFallback;
}
public bool Equals(StrutStyle other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return _encoded.equalsList(list: other._encoded) && _fontFamily == other._fontFamily &&
_fontFamilyFallback.equalsList(list: other._fontFamilyFallback);
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((StrutStyle) obj);
}
public override int GetHashCode() {
unchecked {
var hashCode = _encoded != null ? _encoded.GetHashCode() : 0;
hashCode = (hashCode * 397) ^ (_fontFamily != null ? _fontFamily.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (_fontFamilyFallback != null ? _fontFamilyFallback.GetHashCode() : 0);
return hashCode;
}
}
}
public enum TextDirection {
rtl,
ltr,
}
public class TextBox : IEquatable<TextBox> {
public readonly float bottom;
public readonly TextDirection direction;
public readonly float left;
public readonly float right;
public readonly float top;
TextBox(
float left,
float top,
float right,
float bottom,
TextDirection direction) {
this.left = left;
this.top = top;
this.right = right;
this.bottom = bottom;
this.direction = direction;
}
public float start {
get { return direction == TextDirection.ltr ? left : right; }
}
public float end {
get { return direction == TextDirection.ltr ? right : left; }
}
public bool Equals(TextBox other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return left.Equals(obj: other.left) && top.Equals(obj: other.top) && right.Equals(obj: other.right) &&
bottom.Equals(obj: other.bottom) && direction == other.direction;
}
public static TextBox fromLTRBD(
float left,
float top,
float right,
float bottom,
TextDirection direction) {
return new TextBox(left: left, top: top, right: right, bottom: bottom, direction: direction);
}
public Rect toRect() {
return Rect.fromLTRB(left: left, top: top, right: right, bottom);
}
public override string ToString() {
return
$"TextBox.fromLTRBD({left.ToString("N1")}, {top.ToString("N1")}, {right.ToString("N1")}, {bottom.ToString("N1")}, {direction})";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((TextBox) obj);
}
public override int GetHashCode() {
unchecked {
var hashCode = left.GetHashCode();
hashCode = (hashCode * 397) ^ top.GetHashCode();
hashCode = (hashCode * 397) ^ right.GetHashCode();
hashCode = (hashCode * 397) ^ bottom.GetHashCode();
hashCode = (hashCode * 397) ^ (int) direction;
return hashCode;
}
}
}
public enum TextAffinity {
upstream,
downstream
}
public class TextPosition : IEquatable<TextPosition> {
public readonly TextAffinity affinity;
public readonly int offset;
public TextPosition(
int offset,
TextAffinity affinity = TextAffinity.downstream) {
this.offset = offset;
this.affinity = affinity;
}
public bool Equals(TextPosition other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return offset == other.offset && affinity == other.affinity;
}
public override string ToString() {
return $"TextPosition(offset: {offset}, affinity: {affinity})";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((TextPosition) obj);
}
public override int GetHashCode() {
unchecked {
return (offset * 397) ^ (int) affinity;
}
}
}
public class TextRange : IEquatable<TextRange> {
public static readonly TextRange empty = new TextRange(-1, -1);
public readonly int end;
public readonly int start;
public TextRange(
int start, int end) {
D.assert(start >= -1);
D.assert(end >= -1);
this.start = start;
this.end = end;
}
public bool isValid {
get { return start >= 0 && end >= 0; }
}
public bool isCollapsed {
get { return start == end; }
}
public bool isNormalized {
get { return end >= start; }
}
public bool Equals(TextRange other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return start == other.start && end == other.end;
}
public static TextRange collapsed(int offset) {
D.assert(offset >= -1);
return new TextRange(start: offset, end: offset);
}
public string textBefore(string text) {
D.assert(result: isNormalized);
return text.Substring(0, length: start);
}
public string textAfter(string text) {
D.assert(result: isNormalized);
return text.Substring(startIndex: end);
}
public string textInside(string text) {
D.assert(result: isNormalized);
return text.Substring(startIndex: start, end - start);
}
public override string ToString() {
return $"TextRange(start: {start}, end: {end})";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((TextRange) obj);
}
public override int GetHashCode() {
unchecked {
return (start * 397) ^ end;
}
}
}
public class ParagraphConstraints : IEquatable<ParagraphConstraints> {
public readonly float width;
public ParagraphConstraints(float width) {
this.width = width;
}
public bool Equals(ParagraphConstraints other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return width.Equals(obj: other.width);
}
public override string ToString() {
return $"ParagraphConstraints(width: {width})";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((ParagraphConstraints) obj);
}
public override int GetHashCode() {
return width.GetHashCode();
}
}
public enum BoxHeightStyle {
tight,
max,
includeLineSpacingMiddle,
includeLineSpacingTop,
includeLineSpacingBottom,
strut
}
public enum BoxWidthStyle {
tight,
max
}
public enum PlaceholderAlignment {
baseline,
aboveBaseline,
belowBaseline,
top,
bottom,
middle
}
public class LineMetrics : IEquatable<LineMetrics> {
public readonly float ascent;
public readonly float baseline;
public readonly float descent;
public readonly bool hardBreak;
public readonly float height;
public readonly float left;
public readonly int lineNumber;
public readonly float unscaledAscent;
public readonly float width;
public LineMetrics(
bool hardBreak,
float ascent,
float descent,
float unscaledAscent,
float height,
float width,
float left,
float baseline,
int lineNumber) {
this.hardBreak = hardBreak;
this.ascent = ascent;
this.descent = descent;
this.unscaledAscent = unscaledAscent;
this.height = height;
this.width = width;
this.left = left;
this.baseline = baseline;
this.lineNumber = lineNumber;
}
public bool Equals(LineMetrics other) {
if (ReferenceEquals(null, objB: other)) {
return false;
}
if (ReferenceEquals(this, objB: other)) {
return true;
}
return hardBreak == other.hardBreak && ascent.Equals(obj: other.ascent) &&
descent.Equals(obj: other.descent) &&
unscaledAscent.Equals(obj: other.unscaledAscent) && height.Equals(obj: other.height) &&
width.Equals(obj: other.width) && left.Equals(obj: other.left) &&
baseline.Equals(obj: other.baseline) &&
lineNumber == other.lineNumber;
}
public override string ToString() {
return $"LineMetrics(hardBreak: {hardBreak}, \n" +
$"ascent: {ascent}, " +
$"descent: {descent}, " +
$"unscaledAscent: {unscaledAscent}, " +
$"height: {height}, " +
$"width: {width}, " +
$"left: {left}, " +
$"baseline: {baseline}, " +
$"lineNumber: {lineNumber})";
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, objB: obj)) {
return false;
}
if (ReferenceEquals(this, objB: obj)) {
return true;
}
if (obj.GetType() != GetType()) {
return false;
}
return Equals((LineMetrics) obj);
}
public override int GetHashCode() {
unchecked {
var hashCode = hardBreak.GetHashCode();
hashCode = (hashCode * 397) ^ ascent.GetHashCode();
hashCode = (hashCode * 397) ^ descent.GetHashCode();
hashCode = (hashCode * 397) ^ unscaledAscent.GetHashCode();
hashCode = (hashCode * 397) ^ height.GetHashCode();
hashCode = (hashCode * 397) ^ width.GetHashCode();
hashCode = (hashCode * 397) ^ left.GetHashCode();
hashCode = (hashCode * 397) ^ baseline.GetHashCode();
hashCode = (hashCode * 397) ^ lineNumber;
return hashCode;
}
}
}
public class Paragraph : NativeWrapper {
internal Paragraph(IntPtr ptr) {
_setPtr(ptr: ptr);
}
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_width(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_height(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_longestLine(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_minIntrinsicWidth(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_maxIntrinsicWidth(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_alphabeticBaseline(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern float Paragraph_ideographicBaseline(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
[return: MarshalAs(UnmanagedType.U1)]
static extern bool Paragraph_didExceedMaxLines(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern void Paragraph_layout(IntPtr ptr, float width);
[DllImport(dllName: NativeBindings.dllName)]
static extern Float32List Paragraph_getRectsForRange(IntPtr ptr, int start, int end,
int boxHeightStyle,
int boxWidthStyle);
[DllImport(dllName: NativeBindings.dllName)]
static extern Float32List Paragraph_getRectsForPlaceholders(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern unsafe void Paragraph_getPositionForOffset(IntPtr ptr, float dx, float dy, int* encodedPtr);
[DllImport(dllName: NativeBindings.dllName)]
static extern unsafe void Paragraph_getWordBoundary(IntPtr ptr, int offset, int* boundaryPtr);
[DllImport(dllName: NativeBindings.dllName)]
static extern unsafe void Paragraph_getLineBoundary(IntPtr ptr, int offset, int* boundaryPtr);
[DllImport(dllName: NativeBindings.dllName)]
static extern void Paragraph_paint(IntPtr ptr, IntPtr canvas, float x, float y);
[DllImport(dllName: NativeBindings.dllName)]
static extern Float32List Paragraph_computeLineMetrics(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern void Paragraph_dispose(IntPtr ptr);
public void layout(ParagraphConstraints constraints) {
_layout(width: constraints.width);
}
void _layout(float width) {
Paragraph_layout(ptr: _ptr, width: width);
}
List<TextBox> _decodeTextBoxes(float[] encoded, int size) {
var count = size / 5;
var boxes = new List<TextBox>();
var position = 0;
for (var index = 0; index < count; index += 1) {
boxes.Add(TextBox.fromLTRBD(
encoded[position++],
encoded[position++],
encoded[position++],
encoded[position++],
(TextDirection) encoded[position++]
));
}
return boxes;
}
public override void DisposePtr(IntPtr ptr) {
Paragraph_dispose(ptr: ptr);
}
public float width() {
return Paragraph_width(ptr: _ptr);
}
public float height() {
return Paragraph_height(ptr: _ptr);
}
public float longestLine() {
return Paragraph_longestLine(ptr: _ptr);
}
public float minIntrinsicWidth() {
return Paragraph_minIntrinsicWidth(ptr: _ptr);
}
public float maxIntrinsicWidth() {
return Paragraph_maxIntrinsicWidth(ptr: _ptr);
}
public float alphabeticBaseline() {
return Paragraph_alphabeticBaseline(ptr: _ptr);
}
public float ideographicBaseline() {
return Paragraph_ideographicBaseline(ptr: _ptr);
}
public bool didExceedMaxLines() {
return Paragraph_didExceedMaxLines(ptr: _ptr);
}
public List<TextBox> getBoxesForRange(int start, int end,
BoxHeightStyle boxHeightStyle = BoxHeightStyle.tight,
BoxWidthStyle boxWidthStyle = BoxWidthStyle.tight) {
var data = _getBoxesForRange(start: start, end: end, (int) boxHeightStyle, (int) boxWidthStyle)
.toFloatArrayAndFree();
return _decodeTextBoxes(encoded: data, size: data.Length);
}
// See paragraph.cc for the layout of this return value.
Float32List _getBoxesForRange(int start, int end, int boxHeightStyle, int boxWidthStyle) {
return Paragraph_getRectsForRange(ptr: _ptr, start: start, end: end, boxHeightStyle: boxHeightStyle,
boxWidthStyle: boxWidthStyle);
}
public List<TextBox> getBoxesForPlaceholders() {
var data = _getBoxesForPlaceholders().toFloatArrayAndFree();
return _decodeTextBoxes(encoded: data, size: data.Length);
}
Float32List _getBoxesForPlaceholders() {
return Paragraph_getRectsForPlaceholders(ptr: _ptr);
}
public unsafe TextPosition getPositionForOffset(Offset offset) {
var encoded = new int[2];
fixed (int* encodedPtr = encoded) {
_getPositionForOffset(dx: offset.dx, dy: offset.dy, encodedPtr: encodedPtr);
}
return new TextPosition(encoded[0], (TextAffinity) encoded[1]);
}
unsafe void _getPositionForOffset(float dx, float dy, int* encodedPtr) {
Paragraph_getPositionForOffset(ptr: _ptr, dx: dx, dy: dy, encodedPtr: encodedPtr);
}
public unsafe TextRange getWordBoundary(TextPosition position) {
var boundary = new int[2];
fixed (int* boundaryPtr = boundary) {
_getWordBoundary(offset: position.offset, boundaryPtr: boundaryPtr);
}
return new TextRange(boundary[0], boundary[1]);
}
unsafe void _getWordBoundary(int offset, int* boundaryPtr) {
Paragraph_getWordBoundary(ptr: _ptr, offset: offset, boundaryPtr: boundaryPtr);
}
public unsafe TextRange getLineBoundary(TextPosition position) {
var boundary = new int[2];
fixed (int* boundaryPtr = boundary) {
_getLineBoundary(offset: position.offset, boundaryPtr: boundaryPtr);
}
return new TextRange(boundary[0], boundary[1]);
}
unsafe void _getLineBoundary(int offset, int* boundaryPtr) {
Paragraph_getLineBoundary(ptr: _ptr, offset: offset, boundaryPtr: boundaryPtr);
}
internal void _paint(Canvas canvas, float x, float y) {
Paragraph_paint(ptr: _ptr, canvas: canvas._ptr, x: x, y: y);
}
public List<LineMetrics> computeLineMetrics() {
var data = _computeLineMetrics().toFloatArrayAndFree();
var count = data.Length / 9;
var position = 0;
var metrics = new List<LineMetrics>();
for (var index = 0; index < count; index += 1) {
metrics.Add(new LineMetrics(
data[position++] != 0,
data[position++],
data[position++],
data[position++],
data[position++],
data[position++],
data[position++],
data[position++],
(int) data[position++]
));
}
return metrics;
}
Float32List _computeLineMetrics() {
return Paragraph_computeLineMetrics(ptr: _ptr);
}
}
public class ParagraphBuilder : NativeWrapper {
public ParagraphBuilder(ParagraphStyle style) {
List<string> strutFontFamilies = null;
var strutStyle = style._strutStyle;
if (strutStyle != null) {
strutFontFamilies = new List<string>();
var fontFamily = strutStyle._fontFamily;
if (fontFamily != null) {
strutFontFamilies.Add(item: fontFamily);
}
if (strutStyle._fontFamilyFallback != null) {
strutFontFamilies.AddRange(collection: strutStyle._fontFamilyFallback);
}
}
_setPtr(_constructor(
style._encoded.ToArray(),
strutStyle?._encoded.ToArray(),
fontFamily: style._fontFamily,
strutFontFamilies?.ToArray(),
style._fontSize ?? 0,
style._height ?? 0,
ellipsis: style._ellipsis,
_encodeLocale(locale: style._locale)
));
}
public int placeholderCount { get; private set; }
public List<float> placeholderScales { get; } = new List<float>();
[DllImport(dllName: NativeBindings.dllName)]
static extern IntPtr ParagraphBuilder_constructor(
int[] encoded,
int encodeSize,
byte[] strutData,
int structDataSize,
string fontFamily,
string[] structFontFamily,
int structFontFamilySize,
float fontSize,
float height,
[MarshalAs(unmanagedType: UnmanagedType.LPWStr)]
string ellipsis,
string locale);
[DllImport(dllName: NativeBindings.dllName)]
static extern unsafe void ParagraphBuilder_pushStyle(
IntPtr ptr,
int[] encoded,
int encodedSize,
string[] fontFamilies,
int fontFamiliesSize,
float fontSize,
float letterSpacing,
float wordSpacing,
float height,
float decorationThickness,
string locale,
IntPtr* backgroundObjects,
byte[] backgroundData,
IntPtr* foregroundObjects,
byte[] foregroundData,
byte[] shadowsData,
int shadowDataSize,
byte[] fontFeaturesData,
int fontFeatureDataSize
);
[DllImport(dllName: NativeBindings.dllName)]
static extern void ParagraphBuilder_pop(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern IntPtr ParagraphBuilder_addText(IntPtr ptr, [MarshalAs(unmanagedType: UnmanagedType.LPWStr)]
string text);
[DllImport(dllName: NativeBindings.dllName)]
static extern IntPtr ParagraphBuilder_addPlaceholder(IntPtr ptr, float width, float height, int alignment,
float baselineOffset, int baseline);
[DllImport(dllName: NativeBindings.dllName)]
static extern IntPtr ParagraphBuilder_build(IntPtr ptr);
[DllImport(dllName: NativeBindings.dllName)]
static extern void ParagraphBuilder_dispose(IntPtr ptr);
IntPtr _constructor(
int[] encoded,
byte[] structData,
string fontFamily,
string[] structFontFamily,
float fontSize,
float height,
string ellipsis,
string locale
) {
return ParagraphBuilder_constructor(
encoded: encoded,
encoded == null ? 0 : encoded.Length,
strutData: structData,
structData == null ? 0 : structData.Length,
fontFamily: fontFamily,
structFontFamily: structFontFamily,
structFontFamily == null ? 0 : structFontFamily.Length,
fontSize: fontSize,
height: height,
ellipsis: ellipsis,
locale: locale
);
}
public override void DisposePtr(IntPtr ptr) {
ParagraphBuilder_dispose(ptr: ptr);
}
public void pushStyle(TextStyle style) {
var fullFontFamilies = new List<string>();
fullFontFamilies.Add(item: style._fontFamily);
if (style._fontFamilyFallback != null) {
fullFontFamilies.AddRange(collection: style._fontFamilyFallback);
}
byte[] encodedFontFeatures = null;
var fontFeatures = style._fontFeatures;
if (fontFeatures != null) {
encodedFontFeatures = new byte[fontFeatures.Count * FontFeature._kEncodedSize];
var byteOffset = 0;
foreach (var feature in fontFeatures) {
var byteFeature = new byte[FontFeature._kEncodedSize - byteOffset];
Array.Copy(sourceArray: encodedFontFeatures, 0, destinationArray: byteFeature, 0,
length: FontFeature._kEncodedSize);
feature._encode(byteData: byteFeature);
byteOffset += FontFeature._kEncodedSize;
}
}
_pushStyle(
style._encoded.ToArray(),
fullFontFamilies.ToArray(),
fontSize: style._fontSize,
letterSpacing: style._letterSpacing,
wordSpacing: style._wordSpacing,
height: style._height,
decorationThickness: style._decorationThickness,
_encodeLocale(locale: style._locale),
backgroundObjects: style._background?._objectPtrs,
backgroundData: style._background?._data,
foregroundObjects: style._foreground?._objectPtrs,
foregroundData: style._foreground?._data,
Shadow._encodeShadows(shadows: style._shadows),
fontFeaturesData: encodedFontFeatures
);
}
unsafe void _pushStyle(
int[] encoded,
string[] fontFamilies,
float? fontSize,
float? letterSpacing,
float? wordSpacing,
float? height,
float? decorationThickness,
string locale,
IntPtr[] backgroundObjects,
byte[] backgroundData,
IntPtr[] foregroundObjects,
byte[] foregroundData,
byte[] shadowsData,
byte[] fontFeaturesData
) {
fixed (IntPtr* backgroundObjectsPtr = backgroundObjects)
fixed (IntPtr* foregroundObjectsPtr = foregroundObjects) {
ParagraphBuilder_pushStyle(ptr: _ptr,
encoded: encoded,
encodedSize: encoded.Length,
fontFamilies: fontFamilies,
fontFamiliesSize: fontFamilies.Length,
fontSize.GetValueOrDefault(0),
letterSpacing.GetValueOrDefault(0),
wordSpacing.GetValueOrDefault(0),
height.GetValueOrDefault(0),
decorationThickness.GetValueOrDefault(0),
locale: locale,
backgroundObjects: backgroundObjectsPtr,
backgroundData: backgroundData,
foregroundObjects: foregroundObjectsPtr,
foregroundData: foregroundData,
shadowsData: shadowsData,
shadowsData?.Length ?? 0,
fontFeaturesData: fontFeaturesData,
fontFeaturesData?.Length ?? 0
);
}
}
static string _encodeLocale(Locale locale) {
return locale?.ToString() ?? "";
}
public void pop() {
ParagraphBuilder_pop(ptr: _ptr);
}
public void addText(string text) {
var error = _addText(text: text);
if (error != IntPtr.Zero) {
throw new Exception(Marshal.PtrToStringAnsi(ptr: error));
}
}
IntPtr _addText(string text) {
return ParagraphBuilder_addText(ptr: _ptr, text: text);
}
public void addPlaceholder(float width, float height, PlaceholderAlignment alignment,
TextBaseline? baseline,
float scale = 1.0f,
float? baselineOffset = null
) {
// Require a baseline to be specified if using a baseline-based alignment.
D.assert((alignment == PlaceholderAlignment.aboveBaseline ||
alignment == PlaceholderAlignment.belowBaseline ||
alignment == PlaceholderAlignment.baseline) ? baseline != null : true);
// Default the baselineOffset to height if null. This will place the placeholder
// fully above the baseline, similar to [PlaceholderAlignment.aboveBaseline].
var baselineOffsetFloat = baselineOffset ?? height;
_addPlaceholder(width * scale, height * scale, (int) alignment, baselineOffsetFloat * scale,
(int) (baseline ?? TextBaseline.alphabetic));
placeholderCount++;
placeholderScales.Add(item: scale);
}
IntPtr _addPlaceholder(float width, float height, int alignment, float baselineOffset,
int baseline) {
return ParagraphBuilder_addPlaceholder(ptr: _ptr, width: width, height: height, alignment: alignment,
baselineOffset: baselineOffset, baseline: baseline);
}
public Paragraph build() {
var paragraph = new Paragraph(_build());
return paragraph;
}
IntPtr _build() {
return ParagraphBuilder_build(ptr: _ptr);
}
}
}