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// Copyright (C) 2008 Lukas Lalinsky
//
// 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
// at your option) 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#include <QGraphicsScene>
#include <QDebug>
#include "databasetable.h"
#include "databasemodel.h"
#include "column.h"
DatabaseTable::DatabaseTable(QGraphicsItem *parent)
: DatabaseModelItem(parent)
{
setFlag(ItemIsMovable);
setFlag(ItemIsSelectable);
m_name = "Table";
}
QRectF
DatabaseTable::boundingRect() const
{
return m_outerRect;
}
void
DatabaseTable::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
QFont font = scene()->font();
QFont boldFont = font;
boldFont.setBold(true);
QFont boldFontWithUnderline = boldFont;
boldFontWithUnderline.setUnderline(true);
QPen pen(QPen(QColor(0, 0, 0)));
pen.setJoinStyle(Qt::MiterJoin);
QPen borderPen(pen);
if (isSelected()) {
borderPen.setColor(QColor(0, 96, 255));
borderPen.setWidth(2);
}
painter->setPen(pen);
painter->setFont(font);
painter->fillRect(m_outerRect, QColor(255, 255, 255));
// Draw the table name
painter->fillRect(m_nameBgRect, QColor(205, 205, 205));
painter->drawLine(m_nameBgRect.bottomLeft(), m_nameBgRect.bottomRight());
painter->drawText(m_namePos, m_name);
painter->drawLine(
m_leftSideWidth, m_nameBgRect.bottom(),
m_leftSideWidth, m_outerRect.bottom());
// Draw the table name
QPointF colPos = m_firstColPos;
QPointF leftSizePos = colPos - QPointF(m_leftSideWidth, 0);
foreach (Column *column, m_columns) {
painter->setFont(column->isRequired()
? (column->isPrimaryKey() ? boldFontWithUnderline : boldFont)
: font);
painter->drawText(colPos, column->name());
if (column->isPrimaryKey()) {
painter->setFont(column->isRequired() ? boldFont : font);
painter->drawText(leftSizePos, "PK");
}
colPos += m_colPosIncrement;
leftSizePos += m_colPosIncrement;
}
// Draw the outside border
painter->setPen(borderPen);
painter->drawRect(m_outerRect);
}
void
DatabaseTable::setName(const QString &name)
{
m_name = name;
updateLayout();
}
Column *
DatabaseTable::addColumn(const QString &name)
{
Column *column = new Column(this);
column->setName(name);
m_columns.append(column);
updateLayout();
return column;
}
void
DatabaseTable::setColumn(int index, const QString &name)
{
m_columns[index]->setName(name);
updateLayout();
}
void
DatabaseTable::removeColumn(int index)
{
delete m_columns.takeAt(index);
updateLayout();
}
void
DatabaseTable::swapColumns(int index1, int index2)
{
qSwap(m_columns[index1], m_columns[index2]);
updateLayout();
}
QVariant
DatabaseTable::itemChange(GraphicsItemChange change, const QVariant &value)
{
if (change == ItemSceneHasChanged) {
updateLayout();
}
if (change == ItemPositionChange) {
DatabaseModel *model = qobject_cast<DatabaseModel *>(scene());
if (model) {
emit model->tableMoved(this);
}
}
return QGraphicsItem::itemChange(change, value);
}
void
DatabaseTable::updateLayout()
{
if (!scene())
return;
prepareGeometryChange();
QFont font = scene()->font();
QFontMetricsF fontMetrics(font);
QFont boldFont = font;
boldFont.setBold(true);
QFontMetricsF boldFontMetrics(boldFont);
qreal spaceWidth = fontMetrics.width(' ');
qreal nameWidth = fontMetrics.width(m_name);
qreal height = fontMetrics.height();
m_leftSideWidth = fontMetrics.width("PK");
qreal width = nameWidth + spaceWidth * 2;
qreal maxColumnWidth = 0;
foreach (Column *column, m_columns) {
qreal columnWidth = column->isRequired() ? boldFontMetrics.width(column->name()) : fontMetrics.width(column->name());
maxColumnWidth = qMax(maxColumnWidth, columnWidth);
qreal columnLeftSideWidth = 0;
if (column->isPrimaryKey()) {
if (column->isRequired()) {
columnLeftSideWidth = boldFontMetrics.width("PK");
}
else {
columnLeftSideWidth = fontMetrics.width("PK");
}
}
m_leftSideWidth = qMax(m_leftSideWidth, columnLeftSideWidth);
}
m_leftSideWidth += spaceWidth * 2;
width = qMax(nameWidth + spaceWidth * 4, m_leftSideWidth + maxColumnWidth + spaceWidth * 2);
qreal nameHeight = height + spaceWidth;
m_outerRect = QRectF(0, 0, width, nameHeight + qMax(0.66, qreal(m_columns.size())) * fontMetrics.lineSpacing()
- fontMetrics.leading() + fontMetrics.descent());
m_nameBgRect = QRectF(0, 0, width, nameHeight);
m_namePos = QPointF((width - nameWidth) / 2, fontMetrics.ascent() + spaceWidth / 2);
m_firstColPos = QPointF(m_leftSideWidth + spaceWidth * 1 - 1, nameHeight + fontMetrics.ascent() + 2);
m_colPosIncrement = QPointF(0, fontMetrics.lineSpacing());
update();
}
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