Added "tab-size" property

CHANGELOG.md

@@ -2,10 +2,10 @@
 
 * Requires go 1.18 or higher
 * The "interface{}" type replaced by "any"
-* Added "accent-color", "overflow", "arrow", "arrow-align", "arrow-size", "arrow-width", and "arrow-offset" properties 
+* Added "accent-color", "tab-size", "overflow", "arrow", "arrow-align", "arrow-size", "arrow-width", and "arrow-offset" properties 
 * Added "@ruiArrowSize" and "@ruiArrowWidth" constants to the default theme
 * Added Transition, Transitions, and SetTransition functions to the ViewStyle interface
-* Added GetAccentColor, GetOverflow, IsTimingFunctionValid, and GetTransitions functions
+* Added GetAccentColor, GetTabSize, GetOverflow, IsTimingFunctionValid, and GetTransitions functions
 * Changed GetTransition functions
 * Added the OpenURL function to the Session interface
 

README-ru.md

@@ -1408,6 +1408,11 @@ radius необходимо передать nil
 | WhiteSpacePreLine     | Сохраняются как в источнике | Объединяются в один пробел  | Переносится       | Удаляются                   |
 | WhiteSpaceBreakSpaces | Сохраняются как в источнике | Сохраняются как в источнике | Переносится       | Переносятся                 |
 
+#### Свойство "tab-size"
+
+Свойство "tab-size" (константа TabSize) типа int задает размер символа табуляции (U+0009) в пробелах.
+Значение свойства "tab-size" должно быть больше 0.
+
 #### Свойство "word-break"
 
 Свойство "word-break" (константа WordBreak) типа int определяет, где будет установлен перевод

README.md

@@ -1391,20 +1391,25 @@ The table below shows the behavior of various values of the "white-space" proper
 | WhiteSpacePreLine     | Preserve  | Collapse        | Wrap          | Remove             | Hang                               |
 | WhiteSpaceBreakSpaces | Preserve  | Preserve        | Wrap          | Wrap               | Wrap                               |
 
+#### "tab-size" property
+
+The "tab-size" int property (TabSize constant) specifies the size of the tab character (U+0009) in spaces.
+The value of the "tab-size" property must be greater than 0. The default value is 8
+
 #### "word-break" property
 
 The "word-break" int property (WordBreak constant) determines where the newline will be set if the text exceeds the block boundaries.
 The "white-space" property can take the following values:
 
-0 (constant WordBreak, name "normal) - default behavior for linefeed placement.
+0 (WordBreak constant, "normal" name) - default behavior for linefeed placement.
 
-1 (constant WordBreakAll, name "break-all) - if the block boundaries are exceeded, 
+1 (WordBreakAll constant, "break-all" name) - if the block boundaries are exceeded, 
 a line break will be inserted between any two characters (except for Chinese/Japanese/Korean text).
 
-2 (constant WordBreakKeepAll, name "keep-all) - Line break will not be used in Chinese/Japanese/ Korean text. 
+2 (WordBreakKeepAll constant, "keep-all" name) - Line break will not be used in Chinese/Japanese/ Korean text. 
 For text in other languages, the default behavior (normal) will be applied.
 
-3 (constant WordBreakWord, name "break-word) - when the block boundaries are exceeded, 
+3 (WordBreakWord constant, "break-word" name) - when the block boundaries are exceeded, 
 the remaining whole words can be broken in an arbitrary place, if a more suitable place for line break is not found.
 
 #### "strikethrough", "overline", "underline" properties

propertyGet.go

@@ -42,6 +42,16 @@ func valueToSizeUnit(value any, session Session) (SizeUnit, bool) {
 			if text, ok := session.resolveConstants(value); ok {
 				return StringToSizeUnit(text)
 			}
+
+		case float64:
+			return Px(value), true
+
+		case float32:
+			return Px(float64(value)), true
+		}
+
+		if n, ok := isInt(value); ok {
+			return Px(float64(n)), true
 		}
 	}
 

propertyNames.go

@@ -359,6 +359,11 @@ const (
 	// This is an inherited property, i.e. if it is not defined, then the value of the parent view is used.
 	TextShadow = "text-shadow"
 
+	// TabSize is the constant for the "tab-size" property tag.
+	// The "tab-size" int property sets the width of tab characters (U+0009) in spaces.
+	// This is an inherited property, i.e. if it is not defined, then the value of the parent view is used.
+	TabSize = "tab-size"
+
 	// LetterSpacing is the constant for the "letter-spacing" property tag.
 	// The "letter-spacing" SizeUnit property sets the horizontal spacing behavior between text characters.
 	// This value is added to the natural spacing between characters while rendering the text.

propertySet.go

@@ -67,6 +67,7 @@ var boolProperties = []string{
 
 var intProperties = []string{
 	ZIndex,
+	TabSize,
 	HeadHeight,
 	FootHeight,
 	RowSpan,

view.go

@@ -591,9 +591,9 @@ func viewPropertyChanged(view *viewData, tag string) {
 		}
 		return
 
-	case ZIndex:
+	case ZIndex, TabSize:
-		if i, ok := intProperty(view, ZIndex, session, 0); ok {
+		if i, ok := intProperty(view, tag, session, 0); ok {
-			updateCSSProperty(htmlID, ZIndex, strconv.Itoa(i), session)
+			updateCSSProperty(htmlID, tag, strconv.Itoa(i), session)
 		}
 		return
 

viewStyle.go

@@ -279,6 +279,10 @@ func (style *viewStyle) cssViewStyle(builder cssBuilder, session Session) {
 		}
 	}
 
+	if tabSize, ok := intProperty(style, TabSize, session, 8); ok && tabSize > 0 {
+		builder.add(TabSize, strconv.Itoa(tabSize))
+	}
+
 	if text := style.cssTextDecoration(session); text != "" {
 		builder.add("text-decoration", text)
 	}

viewUtils.go

@@ -156,7 +156,7 @@ func GetOverflow(view View, subviewID string) int {
 // GetZIndex returns the subview z-order.
 // If the second argument (subviewID) is "" then a z-order of the first argument (view) is returned
 func GetZIndex(view View, subviewID string) int {
-	return intStyledProperty(view, subviewID, Visibility, 0)
+	return intStyledProperty(view, subviewID, ZIndex, 0)
 }
 
 // GetWidth returns the subview width.
@@ -366,6 +366,12 @@ func GetTextSize(view View, subviewID string) SizeUnit {
 	return sizeStyledProperty(view, subviewID, TextSize, true)
 }
 
+// GetTabSize returns the subview width of tab characters (U+0009) in spaces.
+// If the second argument (subviewID) is "" then a width of the first argument (view) is returned
+func GetTabSize(view View, subviewID string) int {
+	return intStyledProperty(view, subviewID, TabSize, 8)
+}
+
 // GetTextWeight returns a text weight of the subview. Returns one of next values:
 // 1, 2, 3, 4 (normal text), 5, 6, 7 (bold text), 8 and 9
 // If the second argument (subviewID) is "" then a value from the first argument (view) is returned.