Moved some headers here so they can be included by Globals.cpp in the interface kit folder

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6092 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-01-15 07:15:37 +00:00
parent 023968853e
commit f1569dbb9e
3 changed files with 235 additions and 0 deletions
@@ -0,0 +1,41 @@
+#ifndef __WIDTHBUFFER_H
+#define __WIDTHBUFFER_H
+
+#include "TextGapBuffer.h"
+#include "TextViewSupportBuffer.h"
+
+
+struct _width_table_ {
+#if B_BEOS_VERSION_DANO
+	BFont font;				// corresponding font
+#else
+	int32 fontCode;			// font code
+	float fontSize;			// font size
+#endif
+	int32 hashCount;		// number of hashed items
+	int32 tableCount;		// size of table
+	void *widths;			// width table	
+};
+
+
+class _BWidthBuffer_ : public _BTextViewSupportBuffer_<_width_table_> {
+public:
+	_BWidthBuffer_();
+	virtual ~_BWidthBuffer_();
+
+	float StringWidth(const char *inText, int32 fromOffset, int32 length,
+		const BFont *inStyle);
+	float StringWidth(_BTextGapBuffer_ &, int32 fromOffset, int32 length,
+		const BFont *inStyle);
+
+private:
+	bool FindTable(const BFont *font, int32 *outIndex);
+	int32 InsertTable(const BFont *font);
+	
+	bool GetEscapement(uint32, int32, float *);
+	float HashEscapements(const char *, int32, int32, int32, const BFont *);
+	
+	static uint32 Hash(uint32);
+};
+
+#endif // __WIDTHBUFFER_H