lyx_mirror/src/frontends/qt2/qsetborder.C

/**
 * \file QSetBorder.C
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Edwin Leuven
 *
 * Full author contact details are available in file CREDITS
 */

#include <qpainter.h>
#include <qpixmap.h>
#include <qimage.h>
#include "qsetborder.h"


QSetBorder::QSetBorder( QWidget* parent,  const char* name, WFlags fl )
	: QWidget( parent, name, fl ),
	  left_(false), right_(false), top_(false), bottom_(false), buffer(75,75)
{
	/* length of corner line */
	l = buffer.width()/10;
	/* margin */
	m = buffer.height()/10;
	
	w = buffer.width();
	h = buffer.height();

	init();
	
	setMinimumSize(w,h);
	setMaximumSize(w,h);
}

void QSetBorder::paintEvent( QPaintEvent *e )
{
	QWidget::paintEvent( e );
	bitBlt( this, 0, 0, &buffer, 0, 0, width(), height() );
}

void QSetBorder::init()
{
	buffer.fill();
	QPainter paint;
	paint.begin( &buffer );
	paint.setPen( Qt::black );
	
	paint.drawLine(   m+l ,m,   m+l ,m+l);
	paint.drawLine(w-(m+l),m,w-(m+l),m+l);

	paint.drawLine(m,   m+l ,m+l,   m+l);
	paint.drawLine(m,h-(m+l),m+l,h-(m+l));

	paint.drawLine(   m+l , h-m,   m+l ,h-(m+l));
	paint.drawLine(w-(m+l),h-m,w-(m+l),h-(m+l));

	paint.drawLine(h-m,   m+l ,h-(m+l),   m+l);
	paint.drawLine(h-m,h-(m+l),h-(m+l),h-(m+l));

	paint.end();
}
void QSetBorder::mousePressEvent( QMouseEvent *e)
{
	if ( e->y() > e->x()) {
		if (e->y() < height() - e->x() ) {
			drawLeft(!left_);
			left_ = !left_;
			emit leftSet(left_);
		} else {
			drawBottom(!bottom_);
			bottom_ = !bottom_;
			emit bottomSet(bottom_);
		}
	} else {
		if ( e->y() < height() - e->x() ) {
			drawTop(!top_);
			top_ = !top_;
			emit topSet(top_);
		} else {
			drawRight(!right_);
			right_ = !right_;
			emit rightSet(right_);
		}
	}
	update();
}

void QSetBorder::drawLeft(bool draw)
{
	QPainter paint;
	paint.begin( &buffer );
	QPen p = paint.pen();
	p.setWidth(2);
	p.setColor( draw ? Qt::black : Qt::white );
	paint.setPen(p);
	paint.drawLine(m+l,m+l+2,m+l,h-m-l-1);
	paint.end();
}

void QSetBorder::drawRight(bool draw)
{
	QPainter paint;
	paint.begin( &buffer );
	QPen p = paint.pen();
	p.setWidth(2);
	p.setColor( draw ? Qt::black : Qt::white );
	paint.setPen(p);
	paint.drawLine(h-m-l+1,m+l+2,h-m-l+1,h-m-l-1);
	paint.end();
}

void QSetBorder::drawTop(bool draw)
{
	QPainter paint;
	paint.begin( &buffer );
	QPen p = paint.pen();
	p.setWidth(2);
	p.setColor( draw ? Qt::black : Qt::white );
	paint.setPen(p);
	paint.drawLine(m+l+2,m+l,w-m-l-1,m+l);
	paint.end();
}

void QSetBorder::drawBottom(bool draw)
{
	QPainter paint;
	paint.begin( &buffer );
	QPen p = paint.pen();
	p.setWidth(2);
	p.setColor( draw ? Qt::black : Qt::white );
	paint.setPen(p);
	paint.drawLine(m+l+2,w-m-l+1,w-m-l-1,w-m-l+1);
	paint.end();
}

void QSetBorder::setLeft(bool border)
{
	left_ = border;
}

void QSetBorder::setRight(bool border)
{
	right_ = border;
}

void QSetBorder::setTop(bool border)
{
	top_ = border;
}

void QSetBorder::setBottom(bool border)
{
	bottom_ = border;
}

bool QSetBorder::getLeft()
{
	return left_;
}

bool QSetBorder::getRight()
{
	return right_;
}

bool QSetBorder::getTop()
{
	return top_;
}

bool QSetBorder::getBottom()
{
	return bottom_;
}