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FreeCAD/src/Gui/InputField.cpp

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/***************************************************************************
* Copyright (c) 2013 Juergen Riegel *
* *
* 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., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <QContextMenuEvent>
# include <QMenu>
# include <QPixmapCache>
#endif
#include <Base/Console.h>
#include <Base/Quantity.h>
#include <Base/Exception.h>
#include <App/Application.h>
#include "InputField.h"
#include "BitmapFactory.h"
using namespace Gui;
using namespace Base;
// --------------------------------------------------------------------
namespace Gui {
class InputValidator : public QValidator
{
public:
InputValidator(InputField* parent);
~InputValidator();
void fixup(QString& input) const;
State validate(QString& input, int& pos) const;
private:
InputField* dptr;
};
}
// --------------------------------------------------------------------
InputField::InputField(QWidget * parent)
: QLineEdit(parent),
validInput(true),
actUnitValue(0),
Maximum(DOUBLE_MAX),
Minimum(-DOUBLE_MAX),
StepSize(1.0),
HistorySize(5),
SaveSize(5)
{
setValidator(new InputValidator(this));
iconLabel = new QLabel(this);
iconLabel->setCursor(Qt::ArrowCursor);
QPixmap pixmap = getValidationIcon(":/icons/button_valid.svg", QSize(sizeHint().height(),sizeHint().height()));
iconLabel->setPixmap(pixmap);
iconLabel->setStyleSheet(QString::fromAscii("QLabel { border: none; padding: 0px; }"));
iconLabel->hide();
connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateIconLabel(const QString&)));
int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
setStyleSheet(QString::fromAscii("QLineEdit { padding-right: %1px } ").arg(iconLabel->sizeHint().width() + frameWidth + 1));
QSize msz = minimumSizeHint();
setMinimumSize(qMax(msz.width(), iconLabel->sizeHint().height() + frameWidth * 2 + 2),
qMax(msz.height(), iconLabel->sizeHint().height() + frameWidth * 2 + 2));
this->setContextMenuPolicy(Qt::DefaultContextMenu);
QObject::connect(this, SIGNAL(textChanged(QString)),
this, SLOT(newInput(QString)));
}
InputField::~InputField()
{
}
QPixmap InputField::getValidationIcon(const char* name, const QSize& size) const
{
QString key = QString::fromAscii("%1_%2x%3")
.arg(QString::fromAscii(name))
.arg(size.width())
.arg(size.height());
QPixmap icon;
if (QPixmapCache::find(key, icon))
return icon;
icon = BitmapFactory().pixmapFromSvg(name, size);
if (!icon.isNull())
QPixmapCache::insert(key, icon);
return icon;
}
void InputField::updateText(const Base::Quantity& quant)
{
double dFactor;
QString txt = quant.getUserString(dFactor,actUnitStr);
actUnitValue = quant.getValue()/dFactor;
setText(txt);
}
void InputField::resizeEvent(QResizeEvent *)
{
QSize sz = iconLabel->sizeHint();
int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
iconLabel->move(rect().right() - frameWidth - sz.width(),
(rect().bottom() + 1 - sz.height())/2);
}
void InputField::updateIconLabel(const QString& text)
{
iconLabel->setVisible(!text.isEmpty());
}
void InputField::contextMenuEvent(QContextMenuEvent *event)
{
QMenu *editMenu = createStandardContextMenu();
editMenu->setTitle(tr("Edit"));
QMenu* menu = new QMenu(QString::fromAscii("InputFieldContextmenu"));
menu->addMenu(editMenu);
menu->addSeparator();
// datastructure to remember actions for values
std::vector<QString> values;
std::vector<QAction *> actions;
// add the history menu part...
std::vector<QString> history = getHistory();
for(std::vector<QString>::const_iterator it = history.begin();it!= history.end();++it){
actions.push_back(menu->addAction(*it));
values.push_back(*it);
}
// add the save value portion of the menu
menu->addSeparator();
QAction *SaveValueAction = menu->addAction(tr("Save value"));
std::vector<QString> savedValues = getSavedValues();
for(std::vector<QString>::const_iterator it = savedValues.begin();it!= savedValues.end();++it){
actions.push_back(menu->addAction(*it));
values.push_back(*it);
}
// call the menu and wait until its back
QAction *saveAction = menu->exec(event->globalPos());
// look what the user has choosen
if(saveAction == SaveValueAction)
pushToSavedValues();
else{
int i=0;
for(std::vector<QAction *>::const_iterator it = actions.begin();it!=actions.end();++it,i++)
if(*it == saveAction)
this->setText(values[i]);
}
delete menu;
}
void InputField::newInput(const QString & text)
{
Quantity res;
try {
QString input = text;
fixup(input);
res = Quantity::parse(input);
}
catch(Base::Exception &e){
ErrorText = e.what();
this->setToolTip(QString::fromAscii(ErrorText.c_str()));
QPixmap pixmap = getValidationIcon(":/icons/button_invalid.svg", QSize(sizeHint().height(),sizeHint().height()));
iconLabel->setPixmap(pixmap);
parseError(QString::fromAscii(ErrorText.c_str()));
validInput = false;
return;
}
if (res.getUnit().isEmpty())
res.setUnit(this->actUnit);
// check if unit fits!
if(!actUnit.isEmpty() && !res.getUnit().isEmpty() && actUnit != res.getUnit()){
this->setToolTip(QString::fromAscii("Wrong unit"));
QPixmap pixmap = getValidationIcon(":/icons/button_invalid.svg", QSize(sizeHint().height(),sizeHint().height()));
iconLabel->setPixmap(pixmap);
parseError(QString::fromAscii("Wrong unit"));
validInput = false;
return;
}
QPixmap pixmap = getValidationIcon(":/icons/button_valid.svg", QSize(sizeHint().height(),sizeHint().height()));
iconLabel->setPixmap(pixmap);
ErrorText = "";
validInput = true;
if (res.getValue() > Maximum){
res.setValue(Maximum);
ErrorText = "Maximum reached";
}
if (res.getValue() < Minimum){
res.setValue(Minimum);
ErrorText = "Minimum reached";
}
this->setToolTip(QString::fromAscii(ErrorText.c_str()));
double dFactor;
res.getUserString(dFactor,actUnitStr);
actUnitValue = res.getValue()/dFactor;
actQuantity = res;
// signaling
valueChanged(res);
valueChanged(res.getValue());
}
void InputField::pushToHistory(const QString &valueq)
{
QString val;
if(valueq.isEmpty())
val = this->text();
else
val = valueq;
// check if already in:
std::vector<QString> hist = InputField::getHistory();
for(std::vector<QString>::const_iterator it = hist.begin();it!=hist.end();++it)
if( *it == val)
return;
std::string value(val.toUtf8());
if(_handle.isValid()){
char hist1[21];
char hist0[21];
for(int i = HistorySize -1 ; i>=0 ;i--){
snprintf(hist1,20,"Hist%i",i+1);
snprintf(hist0,20,"Hist%i",i);
std::string tHist = _handle->GetASCII(hist0,"");
if(tHist != "")
_handle->SetASCII(hist1,tHist.c_str());
}
_handle->SetASCII("Hist0",value.c_str());
}
}
std::vector<QString> InputField::getHistory(void)
{
std::vector<QString> res;
if(_handle.isValid()){
std::string tmp;
char hist[21];
for(int i = 0 ; i< HistorySize ;i++){
snprintf(hist,20,"Hist%i",i);
tmp = _handle->GetASCII(hist,"");
if( tmp != "")
res.push_back(QString::fromUtf8(tmp.c_str()));
else
break; // end of history reached
}
}
return res;
}
void InputField::setToLastUsedValue(void)
{
std::vector<QString> hist = getHistory();
if(!hist.empty())
this->setText(hist[0]);
}
void InputField::pushToSavedValues(const QString &valueq)
{
std::string value;
if(valueq.isEmpty())
value = this->text().toUtf8().constData();
else
value = valueq.toUtf8().constData();
if(_handle.isValid()){
char hist1[21];
char hist0[21];
for(int i = SaveSize -1 ; i>=0 ;i--){
snprintf(hist1,20,"Save%i",i+1);
snprintf(hist0,20,"Save%i",i);
std::string tHist = _handle->GetASCII(hist0,"");
if(tHist != "")
_handle->SetASCII(hist1,tHist.c_str());
}
_handle->SetASCII("Save0",value.c_str());
}
}
std::vector<QString> InputField::getSavedValues(void)
{
std::vector<QString> res;
if(_handle.isValid()){
std::string tmp;
char hist[21];
for(int i = 0 ; i< SaveSize ;i++){
snprintf(hist,20,"Save%i",i);
tmp = _handle->GetASCII(hist,"");
if( tmp != "")
res.push_back(QString::fromUtf8(tmp.c_str()));
else
break; // end of history reached
}
}
return res;
}
/** Sets the preference path to \a path. */
void InputField::setParamGrpPath( const QByteArray& path )
{
_handle = App::GetApplication().GetParameterGroupByPath( path);
if (_handle.isValid())
sGroupString = (const char*)path;
}
/** Returns the widget's preferences path. */
QByteArray InputField::paramGrpPath() const
{
if(_handle.isValid())
return sGroupString.c_str();
return QByteArray();
}
/// sets the field with a quantity
void InputField::setValue(const Base::Quantity& quant)
{
actQuantity = quant;
// check limits
if (actQuantity.getValue() > Maximum)
actQuantity.setValue(Maximum);
if (actQuantity.getValue() < Minimum)
actQuantity.setValue(Minimum);
actUnit = quant.getUnit();
updateText(quant);
}
void InputField::setValue(const double& value)
{
setValue(Base::Quantity(value, actUnit));
}
void InputField::setUnit(const Base::Unit& unit)
{
actUnit = unit;
actQuantity.setUnit(unit);
updateText(actQuantity);
}
const Base::Unit& InputField::getUnit() const
{
return actUnit;
}
/// get the value of the singleStep property
double InputField::singleStep(void)const
{
return StepSize;
}
/// set the value of the singleStep property
void InputField::setSingleStep(double s)
{
StepSize = s;
}
/// get the value of the maximum property
double InputField::maximum(void)const
{
return Maximum;
}
/// set the value of the maximum property
void InputField::setMaximum(double m)
{
Maximum = m;
if (actQuantity.getValue() > Maximum) {
actQuantity.setValue(Maximum);
updateText(actQuantity);
}
}
/// get the value of the minimum property
double InputField::minimum(void)const
{
return Minimum;
}
/// set the value of the minimum property
void InputField::setMinimum(double m)
{
Minimum = m;
if (actQuantity.getValue() < Minimum) {
actQuantity.setValue(Minimum);
updateText(actQuantity);
}
}
void InputField::setUnitText(const QString& str)
{
Base::Quantity quant = Base::Quantity::parse(str);
setUnit(quant.getUnit());
}
QString InputField::getUnitText(void)
{
return actUnitStr;
}
// get the value of the minimum property
int InputField::historySize(void)const
{
return HistorySize;
}
// set the value of the minimum property
void InputField::setHistorySize(int i)
{
assert(i>=0);
assert(i<100);
HistorySize = i;
}
void InputField::selectNumber(void)
{
QString str = text();
unsigned int i = 0;
QChar d = locale().decimalPoint();
QChar g = locale().groupSeparator();
QChar n = locale().negativeSign();
for (QString::iterator it = str.begin(); it != str.end(); ++it) {
if (it->isDigit())
i++;
else if (*it == d)
i++;
else if (*it == g)
i++;
else if (*it == n)
i++;
else // any non-number character
break;
}
setSelection(0, i);
}
void InputField::showEvent(QShowEvent * event)
{
QLineEdit::showEvent(event);
bool selected = this->hasSelectedText();
updateText(actQuantity);
if (selected)
selectNumber();
}
void InputField::focusInEvent(QFocusEvent * event)
{
if (event->reason() == Qt::TabFocusReason ||
event->reason() == Qt::BacktabFocusReason ||
event->reason() == Qt::ShortcutFocusReason) {
if (!this->hasSelectedText())
selectNumber();
}
QLineEdit::focusInEvent(event);
}
void InputField::keyPressEvent(QKeyEvent *event)
{
switch (event->key()) {
case Qt::Key_Up:
{
double val = actUnitValue + StepSize;
this->setText( QString::fromUtf8("%L1 %2").arg(val).arg(actUnitStr));
event->accept();
}
break;
case Qt::Key_Down:
{
double val = actUnitValue - StepSize;
this->setText( QString::fromUtf8("%L1 %2").arg(val).arg(actUnitStr));
event->accept();
}
break;
default:
QLineEdit::keyPressEvent(event);
break;
}
}
void InputField::wheelEvent (QWheelEvent * event)
{
double step = event->delta() > 0 ? StepSize : -StepSize;
double val = actUnitValue + step;
if (val > Maximum)
val = Maximum;
else if (val < Minimum)
val = Minimum;
this->setText(QString::fromUtf8("%L1 %2").arg(val).arg(actUnitStr));
selectNumber();
event->accept();
}
void InputField::fixup(QString& input) const
{
input.remove(locale().groupSeparator());
if (locale().negativeSign() != QLatin1Char('-'))
input.replace(locale().negativeSign(), QLatin1Char('-'));
if (locale().positiveSign() != QLatin1Char('+'))
input.replace(locale().positiveSign(), QLatin1Char('+'));
}
QValidator::State InputField::validate(QString& input, int& pos) const
{
try {
Quantity res;
QString text = input;
fixup(text);
res = Quantity::parse(text);
double factor;
QString unitStr;
res.getUserString(factor, unitStr);
double value = res.getValue()/factor;
// disallow to enter numbers out of range
if (value > this->Maximum || value < this->Minimum)
return QValidator::Invalid;
}
catch(Base::Exception&) {
// Actually invalid input but the newInput slot gives
// some feedback
return QValidator::Intermediate;
}
return QValidator::Acceptable;
}
// --------------------------------------------------------------------
InputValidator::InputValidator(InputField* parent) : QValidator(parent), dptr(parent)
{
}
InputValidator::~InputValidator()
{
}
void InputValidator::fixup(QString& input) const
{
dptr->fixup(input);
}
QValidator::State InputValidator::validate(QString& input, int& pos) const
{
return dptr->validate(input, pos);
}
#include "moc_InputField.cpp"
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