/jEdit/tags/jedit-4-5-pre1/org/gjt/sp/jedit/textarea/ShapedFoldPainter.java

/*

 * ShapedFoldPainter.java

 * :tabSize=8:indentSize=8:noTabs=false:

 * :folding=explicit:collapseFolds=0:

 *

 * Copyright (C) 2008 Shlomy Reinstein

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

 */



package org.gjt.sp.jedit.textarea;



import java.awt.Graphics2D;



import org.gjt.sp.jedit.buffer.JEditBuffer;



// {{{ ShapedFoldPainter class

/**

 * Fold Painter

 */

public abstract class ShapedFoldPainter implements FoldPainter 

{

	// {{{ paintFoldEnd()

	public void paintFoldEnd(Gutter gutter, Graphics2D gfx, int screenLine,

			int physicalLine, int y, int lineHeight, JEditBuffer buffer)

	{

		gfx.setColor(gutter.getFoldColor());

		int _y = y + lineHeight / 2;

		int _x = 5;

		gfx.drawLine(_x,y,_x,_y+3);

		gfx.drawLine(_x,_y+3,_x+4,_y+3);

		boolean nested = (physicalLine < buffer.getLineCount() - 1 &&

			buffer.getFoldLevel(physicalLine + 1) > 0);

		if (nested)

			gfx.drawLine(_x,y+4,_x,y+lineHeight-1);

	}// }}}



	// {{{ paintFoldMiddle()

	public void paintFoldMiddle(Gutter gutter, Graphics2D gfx, int screenLine,

			int physicalLine, int y, int lineHeight, JEditBuffer buffer)

	{

		gfx.setColor(gutter.getFoldColor());

		gfx.drawLine(5,y,5,y+lineHeight-1);

	}// }}}



	// {{{ paintFoldStart()

	public void paintFoldStart(Gutter gutter, Graphics2D gfx, int screenLine,

			int physicalLine, boolean nextLineVisible, int y, int lineHeight,

			JEditBuffer buffer)

	{

		int _y = y + lineHeight / 2;

		int _x = 5;

		gfx.setColor(gutter.getFoldColor());

		paintFoldShape(gfx, _y - 4, _y + 4);

		gfx.drawLine(_x-2,_y,_x+2,_y);

		boolean nested = (buffer.getFoldLevel(physicalLine) > 0);

		if (nested)

			gfx.drawLine(_x,y,_x,_y-5);

		if (nextLineVisible)

			gfx.drawLine(_x,_y+5,_x,y+lineHeight-1);

		else

		{

			gfx.drawLine(_x,_y-2,_x,_y+2);

			if (nested)

				gfx.drawLine(_x,_y+4,_x,y+lineHeight-1);

		}

	}// }}}



	protected abstract void paintFoldShape(Graphics2D gfx, int top, int bottom);



} // }}}