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textbox.hpp

/*      _______   __   __   __   ______   __   __   _______   __   __
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 * Copyright (c) 2004, 2005, 2006, 2007 Olof Naessén and Per Larsson
 *
 *                                                         Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
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#ifndef GCN_TEXTBOX_HPP
#define GCN_TEXTBOX_HPP

#include <ctime>
#include <string>
#include <vector>

#include "guichan/keylistener.hpp"
#include "guichan/mouselistener.hpp"
#include "guichan/platform.hpp"
#include "guichan/widget.hpp"

namespace gcn
{
    /**
     * A TextBox in which you can write and/or display a lines of text.
     *
     * NOTE: A plain TextBox is really uggly and looks much better inside a
     *       ScrollArea.
     */
00077     class GCN_CORE_DECLSPEC TextBox:
        public Widget,
        public MouseListener,
        public KeyListener
    {
    public:
        /**
         * Constructor.
         */
        TextBox();

        /**
         * Constructor.
         *
         * @param text the text of the TextBox.
         */
        TextBox(const std::string& text);

        /**
         * Sets the text.
         *
         * @param text the text of the TextBox.
         */
        virtual void setText(const std::string& text);

        /**
         * Gets the text.
         * @return the text of the TextBox.
         */
        virtual std::string getText() const;

        /**
         * Gets the row of a text.
         *
         * @return the text of a certain row in the TextBox.
         */
        virtual const std::string& getTextRow(int row) const;

        /**
         * Sets the text of a certain row in a TextBox.
         *
         * @param row the row number.
         * @param text the text of a certain row in the TextBox.
         */
        virtual void setTextRow(int row, const std::string& text);

        /**
         * Gets the number of rows in the text.
         *
         * @return the number of rows in the text.
         */
        virtual unsigned int getNumberOfRows() const;

        /**
         * Gets the caret position in the text.
         *
         * @return the caret position in the text.
         */
        virtual unsigned int getCaretPosition() const;

        /**
         * Sets the position of the caret in the text.
         *
         * @param position the positon of the caret.
         */
        virtual void setCaretPosition(unsigned int position);

        /**
         * Gets the row the caret is in in the text.
         *
         * @return the row the caret is in in the text.
         */
        virtual unsigned int getCaretRow() const;

        /**
         * Sets the row the caret should be in in the text.
         *
         * @param row the row number.
         */
        virtual void setCaretRow(int row);

        /**
         * Gets the column the caret is in in the text.
         *
         * @return the column the caret is in in the text.
         */
        virtual unsigned int getCaretColumn() const;

        /**
         * Sets the column the caret should be in in the text.
         *
         * @param column the column number.
         */
        virtual void setCaretColumn(int column);

        /**
         * Sets the row and the column the caret should be in in the text.
         *
         * @param row the row number.
         * @param column the column number.
         */
        virtual void setCaretRowColumn(int row, int column);

        /**
         * Scrolls the text to the caret if the TextBox is in a ScrollArea.
         */
        virtual void scrollToCaret();

        /**
         * Checks if the TextBox is editable.
         *
         * @return true it the TextBox is editable.
         */
        virtual bool isEditable() const;

        /**
         * Sets if the TextBox should be editable or not.
         *
         * @param editable true if the TextBox should be editable.
         */
        virtual void setEditable(bool editable);

        /**
         * Adds a text row to the text.
         *
         * @param row a row.
         */
        virtual void addRow(const std::string row);

        /**
         * Checks if the TextBox is opaque
         *
         * @return true if the TextBox is opaque
         */
        virtual bool isOpaque();

        /**
         * Sets the TextBox to be opaque.
         *
         * @param opaque true if the TextBox should be opaque.
         */
        virtual void setOpaque(bool opaque);


        // Inherited from Widget

        virtual void draw(Graphics* graphics);

        virtual void drawBorder(Graphics* graphics);

        virtual void fontChanged();


        // Inherited from KeyListener

        virtual void keyPressed(KeyEvent& keyEvent);


        // Inherited from MouseListener

        virtual void mousePressed(MouseEvent& mouseEvent);

        virtual void mouseDragged(MouseEvent& mouseEvent);

    protected:
        /**
         * Draws the caret.
         *
         * @param graphics a Graphics object to draw with.
         * @param x the x position.
         * @param y the y position.
         */
        virtual void drawCaret(Graphics* graphics, int x, int y);

        /**
         * Adjusts the TextBox size to fit the font size.
         */
        virtual void adjustSize();

        std::vector<std::string> mTextRows;
        int mCaretColumn;
        int mCaretRow;
        bool mEditable;
        bool mOpaque;
    };
}

#endif // end GCN_TEXTBOX_HPP

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