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/* $Id$ */

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/** @file textbuf_gui.h Stuff related to the text buffer GUI. */

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#ifndef TEXTBUF_GUI_H

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#define TEXTBUF_GUI_H

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#include "window_type.h"

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#include "string_type.h"

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#include "strings_type.h"

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struct Textbuf {

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	char *buf;                  ///< buffer in which text is saved

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	uint16 maxlength, maxwidth; ///< the maximum size of the buffer. Maxwidth specifies screensize in pixels, maxlength is in bytes

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	uint16 length, width;       ///< the current size of the string. Width specifies screensize in pixels, length is in bytes

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	bool caret;                 ///< is the caret ("_") visible or not

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	uint16 caretpos;            ///< the current position of the caret in the buffer, in bytes

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	uint16 caretxoffs;          ///< the current position of the caret in pixels

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};

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bool HandleCaret(Textbuf *tb);

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void DeleteTextBufferAll(Textbuf *tb);

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bool DeleteTextBufferChar(Textbuf *tb, int delmode);

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bool InsertTextBufferChar(Textbuf *tb, uint32 key);

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bool InsertTextBufferClipboard(Textbuf *tb);

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bool MoveTextBufferPos(Textbuf *tb, int navmode);

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void InitializeTextBuffer(Textbuf *tb, const char *buf, uint16 maxlength, uint16 maxwidth);

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void UpdateTextBufferSize(Textbuf *tb);

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typedef void QueryCallbackProc(Window*, bool);

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void ShowQueryString(StringID str, StringID caption, uint maxlen, uint maxwidth, Window *parent, CharSetFilter afilter);

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void ShowQuery(StringID caption, StringID message, Window *w, QueryCallbackProc *callback);

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/** The number of 'characters' on the on-screen keyboard. */

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static const uint OSK_KEYBOARD_ENTRIES = 50;

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/**

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 * The number of characters has to be OSK_KEYBOARD_ENTRIES. However, these

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 * have to be UTF-8 encoded, which means up to 4 bytes per character.

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 * Furthermore the string needs to be '\0'-terminated.

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 */

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extern char _keyboard_opt[2][OSK_KEYBOARD_ENTRIES * 4 + 1];

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#endif /* TEXTBUF_GUI_H */