HaikuDepot: Added TextSpan class

src/apps/haiku-depot/Jamfile

@@ -31,6 +31,7 @@ Application HaikuDepot :
 	ParagraphStyle.cpp
 	ParagraphStyleData.cpp
 	TextLayout.cpp
+	TextSpan.cpp
 	TextStyle.cpp
 	TextView.cpp
 	

src/apps/haiku-depot/textview/TextSpan.cpp

@@ -0,0 +1,92 @@
+/*
+ * Copyright 2013, Stephan Aßmus <superstippi@gmx.de>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+
+#include "TextSpan.h"
+
+
+TextSpan::TextSpan()
+	:
+	fText(),
+	fStyle()
+{
+}
+
+
+TextSpan::TextSpan(const BString& text, const TextStyle& style)
+	:
+	fText(text),
+	fStyle(style)
+{
+}
+
+
+TextSpan::TextSpan(const TextSpan& other)
+	:
+	fText(other.fText),
+	fStyle(other.fStyle)
+{
+}
+
+
+TextSpan&
+TextSpan::operator=(const TextSpan& other)
+{
+	fText = other.fText;
+	fStyle = other.fStyle;
+
+	return *this;
+}
+
+
+bool
+TextSpan::operator==(const TextSpan& other) const
+{
+	return fText == other.fText
+		&& fStyle == other.fStyle;
+}
+
+
+bool
+TextSpan::operator!=(const TextSpan& other) const
+{
+	return !(*this == other);
+}
+
+
+void
+TextSpan::SetText(const BString& text)
+{
+	fText = text;
+}
+
+
+void
+TextSpan::SetStyle(const TextStyle& style)
+{
+	fStyle = style;
+}
+
+
+TextSpan
+TextSpan::SubSpan(int32 start, int32 count) const
+{
+	if (start < 0) {
+		count += start;
+		start = 0;
+	}
+
+	BString subString;
+	
+	int32 charCount = fText.CountChars();
+	if (start < charCount) {
+		if (start + count > charCount)
+			count = charCount - start;
+
+		fText.CopyCharsInto(subString, start, count);
+	}
+
+	return TextSpan(subString, fStyle);
+}
+

src/apps/haiku-depot/textview/TextSpan.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2013, Stephan Aßmus <superstippi@gmx.de>.
+ * All rights reserved. Distributed under the terms of the MIT License.
+ */
+#ifndef TEXT_SPAN_H
+#define TEXT_SPAN_H
+
+
+#include <String.h>
+
+#include "TextStyle.h"
+
+
+class TextSpan {
+public:
+								TextSpan();
+								TextSpan(const BString& text,
+									const TextStyle& style);
+								TextSpan(const TextSpan& other);
+
+			TextSpan&			operator=(const TextSpan& other);
+			bool				operator==(const TextSpan& other) const;
+			bool				operator!=(const TextSpan& other) const;
+
+			void				SetText(const BString& text);
+	inline	const BString&		Text() const
+									{ return fText; }
+
+			void				SetStyle(const TextStyle& style);
+	inline	const TextStyle&	Style() const
+									{ return fStyle; }
+
+			TextSpan			SubSpan(int32 start, int32 count) const;
+
+private:
+			BString				fText;
+			TextStyle			fStyle;
+};
+
+
+#endif // TEXT_SPAN_H