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Added expression support to QuantitySpinBox and InputField classes.

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This commit is contained in:
Eivind Kvedalen
2015-09-07 00:08:54 +02:00
committed by wmayer
parent ea9fe65c14
commit 8e5619f7a0
13 changed files with 1153 additions and 19 deletions
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src/Gui/DlgExpressionInput.cpp Normal file
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/***************************************************************************
* Copyright (c) 2015 Eivind Kvedalen <eivind@kvedalen.name> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 51 Franklin Street, *
* Fifth Floor, Boston, MA 02110-1301, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#include <QPainter>
#include <QDesktopWidget>
#include "DlgExpressionInput.h"
#include "ui_DlgExpressionInput.h"
#include "ExpressionCompleter.h"
#include <Base/Tools.h>
#include <App/Expression.h>
#include <App/DocumentObject.h>
using namespace App;
using namespace Gui::Dialog;
const int DlgExpressionInput::h = 15;
const int DlgExpressionInput::l = 30;
const int DlgExpressionInput::r = 30;
const int DlgExpressionInput::d = 7;
DlgExpressionInput::DlgExpressionInput(const App::ObjectIdentifier & _path, boost::shared_ptr<const Expression> _expression, const Base::Unit & _impliedUnit, QWidget *parent) :
QDialog(parent),
ui(new Ui::DlgExpressionInput),
expression(_expression ? _expression->copy() : 0),
path(_path),
discarded(false),
impliedUnit(_impliedUnit)
{
assert(path.getDocumentObject() != 0);
// Setup UI
ui->setupUi(this);
if (expression) {
ui->expression->setText(Base::Tools::fromStdString(expression->toString()));
textChanged(Base::Tools::fromStdString(expression->toString()));
}
// Connect signal(s)
connect(ui->expression, SIGNAL(textChanged(QString)), this, SLOT(textChanged(QString)));
connect(ui->discardBtn, SIGNAL(clicked()), this, SLOT(setDiscarded()));
// Set document object on line edit to create auto completer
DocumentObject * docObj = path.getDocumentObject();
ui->expression->setDocumentObject(docObj);
setWindowFlags(Qt::Widget | Qt::FramelessWindowHint);
setAttribute(Qt::WA_NoSystemBackground, true);
setAttribute(Qt::WA_TranslucentBackground, true);
setParent(0);
ui->expression->setFocus();
QDesktopWidget widget;
setMinimumWidth(widget.availableGeometry(widget.primaryScreen()).width()/2);
#ifndef FC_DEBUG
ui->parsedExpr->setVisible(false);
#endif
}
DlgExpressionInput::~DlgExpressionInput()
{
delete ui;
}
QPoint DlgExpressionInput::tip() const
{
return QPoint(l - d, 0);
}
void DlgExpressionInput::paintEvent(QPaintEvent * event) {
QPainter painter(this);
QPainterPath path;
path.moveTo(0, h + r / 2);
path.arcTo(QRect(0, h, r, r), 180, -90);
path.lineTo(l, h);
path.lineTo(l - d, 0);
path.lineTo(l + d, h);
path.lineTo(width() - r - 1, h);
path.arcTo(QRect(width() - r - 1, h, r, r), 90, -90);
path.lineTo(width() - 1, height() - r);
path.arcTo(QRect(width() - r - 1, height() - r - 1, r, r), 0, -90);
path.lineTo(r, height() - 1);
path.arcTo(QRect(0, height() - r - 1, r, r), -90, -90);
path.lineTo(0, h + r/2);
QPen pen(Qt::black);
QBrush brush(QColor(250, 250, 180));
pen.setWidthF(2.0);
painter.setBrush(brush);
painter.setPen(pen);
painter.fillPath(path, brush);
painter.drawPath(path);
}
void DlgExpressionInput::textChanged(const QString &text)
{
try {
boost::shared_ptr<Expression> expr(ExpressionParser::parse(path.getDocumentObject(), text.toUtf8().constData()));
if (expr) {
std::string error = path.getDocumentObject()->ExpressionEngine.validateExpression(path, expr);
if (error.size() > 0)
throw Base::Exception(error.c_str());
#ifdef FC_DEBUG
ui->parsedExpr->setText(Base::Tools::fromStdString(expr->toString()));
#endif
std::auto_ptr<Expression> result(expr->eval());
expression = expr;
ui->okBtn->setEnabled(true);
ui->errorMsg->setText(QString::fromUtf8(""));
NumberExpression * n = Base::freecad_dynamic_cast<NumberExpression>(result.get());
if (n) {
Base::Quantity value = n->getQuantity();
if (!value.getUnit().isEmpty() && value.getUnit() != impliedUnit)
throw Base::Exception("Unit mismatch between result and required unit");
value.setUnit(impliedUnit);
ui->result->setText(value.getUserString());
}
else
ui->result->setText(Base::Tools::fromStdString(result->toString()));
}
}
catch (Base::Exception & e) {
ui->errorMsg->setText(QString::fromUtf8(e.what()));
QPalette p(ui->errorMsg->palette());
p.setColor(QPalette::WindowText, Qt::red);
ui->errorMsg->setPalette(p);
ui->okBtn->setDisabled(true);
ui->result->setText(QString::fromAscii("--"));
}
}
void DlgExpressionInput::setDiscarded()
{
discarded = true;
reject();
}
#include "moc_DlgExpressionInput.cpp"