lyx_mirror/src/frontends/qt2/qsetborder.C

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/**
* \file qsetborder.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Edwin Leuven
* \author John Levon
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include <qpainter.h>
#include "qsetborder.h"
QSetBorder::QSetBorder(QWidget * parent, char const * name, WFlags fl)
: QWidget(parent, name, fl), 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);
// FIXME: wow, readable !! :)
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()) {
if (left_.enabled) {
setLeft(!left_.set);
emit leftSet(left_.set);
}
} else {
if (bottom_.enabled) {
setBottom(!bottom_.set);
emit bottomSet(bottom_.set);
}
}
} else {
if (e->y() < height() - e->x()) {
if (top_.enabled) {
setTop(!top_.set);
emit topSet(top_.set);
}
} else {
if (right_.enabled) {
setRight(!right_.set);
emit rightSet(right_.set);
}
}
}
update();
emit clicked();
}
void QSetBorder::drawLine(QColor const & col, int x, int y, int x2, int y2)
{
QPainter paint;
paint.begin(&buffer);
QPen p = paint.pen();
p.setWidth(2);
p.setColor(col);
paint.setPen(p);
paint.drawLine(x, y, x2, y2);
paint.end();
}
void QSetBorder::drawLeft(bool draw)
{
QColor col(draw ? Qt::black : Qt::white);
if (!left_.enabled)
col = QColor("grey");
drawLine(col, m + l, m + l + 2, m + l, h - m - l - 1);
}
void QSetBorder::drawRight(bool draw)
{
QColor col(draw ? Qt::black : Qt::white);
if (!right_.enabled)
col = QColor("grey");
drawLine(col, h - m - l + 1, m + l + 2, h - m - l + 1, h - m - l - 1);
}
void QSetBorder::drawTop(bool draw)
{
QColor col(draw ? Qt::black : Qt::white);
if (!top_.enabled)
col = QColor("grey");
drawLine(col, m + l + 2, m + l, w - m - l - 1, m + l);
}
void QSetBorder::drawBottom(bool draw)
{
QColor col(draw ? Qt::black : Qt::white);
if (!bottom_.enabled)
col = QColor("grey");
drawLine(col, m + l + 2, w - m - l + 1, w - m - l - 1, w - m - l + 1);
}
void QSetBorder::setLeftEnabled(bool border)
{
left_.enabled = border;
drawLeft(border);
}
void QSetBorder::setRightEnabled(bool border)
{
right_.enabled = border;
drawRight(border);
}
void QSetBorder::setTopEnabled(bool border)
{
top_.enabled = border;
drawTop(border);
}
void QSetBorder::setBottomEnabled(bool border)
{
bottom_.enabled = border;
drawBottom(border);
}
void QSetBorder::setLeft(bool border)
{
left_.set = border;
drawLeft(border);
}
void QSetBorder::setRight(bool border)
{
right_.set = border;
drawRight(border);
}
void QSetBorder::setTop(bool border)
{
top_.set = border;
drawTop(border);
}
void QSetBorder::setBottom(bool border)
{
bottom_.set = border;
drawBottom(border);
}
void QSetBorder::setAll(bool border)
{
setLeft(border);
setRight(border);
setTop(border);
setBottom(border);
}
bool QSetBorder::getLeft()
{
return left_.set;
}
bool QSetBorder::getRight()
{
return right_.set;
}
bool QSetBorder::getTop()
{
return top_.set;
}
bool QSetBorder::getBottom()
{
return bottom_.set;
}