1 // Copyright (C) 2014-2017 CEA/DEN, EDF R&D
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or
18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
21 #include "ModuleBase_ParamSpinBox.h"
27 #include <QApplication>
29 #include <QStringListModel>
31 #include <QAbstractItemView>
39 bool isVariableSymbol(const QChar& theChar) {
40 if (theChar.isLetterOrNumber())
47 ModuleBase_ParamSpinBox::ModuleBase_ParamSpinBox(QWidget* theParent, int thePrecision)
48 : QAbstractSpinBox(theParent),
50 myAcceptVariables(true),
55 myCompleter = new QCompleter(this);
56 myCompleter->setWidget(lineEdit());
57 myCompleter->setCompletionMode(QCompleter::PopupCompletion);
59 myCompleterModel = new QStringListModel(this);
60 myCompleter->setModel(myCompleterModel);
61 connect(myCompleter, SIGNAL(highlighted(const QString&)),
62 this, SLOT(insertCompletion(const QString&)));
64 QAbstractItemView* aPopup = myCompleter->popup();
65 aPopup->installEventFilter(this);
67 // connectSignalsAndSlots();
68 myEnabledBaseColor = palette().color(QPalette::Active, QPalette::Base);
69 connect(lineEdit(), SIGNAL(textChanged(const QString&)),
70 this, SLOT(onTextChanged(const QString&)));
72 setLocale(QLocale::c());
74 myValidator = new QDoubleValidator(this);
75 myValidator->setLocale(locale());
76 myValidator->setRange(myMinimum, myMaximum);
77 myValidator->setDecimals(thePrecision);
80 void ModuleBase_ParamSpinBox::setCompletionList(QStringList& theList)
82 theList.removeDuplicates();
84 myCompleterModel->setStringList(theList);
90 ModuleBase_ParamSpinBox::~ModuleBase_ParamSpinBox()
96 \brief Perform \a steps increment/decrement steps.
98 Re-implemented to handle cases when Notebook variable
99 name is specified by the user as the widget text.
100 Otherwise, simply calls the base implementation.
102 \param steps number of increment/decrement steps
104 void ModuleBase_ParamSpinBox::stepBy(int steps)
109 double aVal = lineEdit()->text().toDouble();
110 aVal += steps * mySingleStep;
112 //QAbstractSpinBox::stepBy(steps);
115 void ModuleBase_ParamSpinBox::onTextChanged(const QString& theText)
117 myIsEquation = hasVariable(theText);
118 emit textChanged(theText);
123 \brief This function is used to determine whether input is valid.
124 \param str currently entered value
125 \param pos cursor position in the string
126 \return validating operation result
128 QValidator::State ModuleBase_ParamSpinBox::validate(QString& str, int& pos) const
130 // Trying to interpret the current input text as a numeric value
131 if (!hasVariable(str)) {
132 /// If decimals = 0 do not accept '.' (interpret as int)
133 if ((myValidator->decimals() == 0) && str.endsWith('.'))
134 return QValidator::Invalid;
135 return myValidator->validate(str, pos);
138 return isAcceptVariables() ? QValidator::Acceptable : QValidator::Invalid;
142 \brief This function is used to set a current value for this spinbox.
143 \param value current value
145 The new value is ignored if the spinbox has a variable.
147 void ModuleBase_ParamSpinBox::setValue(double value)
149 myIsEquation = false;
151 if (aVal < myMinimum)
153 else if (aVal > myMaximum)
155 QString aText = (myValidator->decimals() == 0) ? QString::number((int)aVal) :
156 QString::number(aVal, 'g', decimals());
157 lineEdit()->blockSignals(true);
158 lineEdit()->setText(aText);
159 lineEdit()->blockSignals(false);
160 emit textChanged(aText);
163 double ModuleBase_ParamSpinBox::value() const
165 return lineEdit()->text().toDouble();
169 \brief This function is used to set a text for this spinbox.
170 \param value current value
172 void ModuleBase_ParamSpinBox::setText(const QString& value)
174 myIsEquation = hasVariable(value);
175 if (myAcceptVariables && myIsEquation) {
176 lineEdit()->setText(value);
177 emit textChanged(value);
181 double aVal = value.toDouble(&isConv);
188 \brief Enables or disables variable names in the spin box.
189 By default, variable names are enabled.
190 \param flag If true, variable names are enabled.
192 void ModuleBase_ParamSpinBox::setAcceptVariables(const bool flag)
194 myAcceptVariables = flag;
195 if ((!myAcceptVariables) && myIsEquation) {
201 \brief Returns true if the spin box accepts variable names.
203 bool ModuleBase_ParamSpinBox::isAcceptVariables() const
205 return myAcceptVariables;
208 bool ModuleBase_ParamSpinBox::hasVariable() const
213 bool ModuleBase_ParamSpinBox::hasVariable(const QString& theText) const
215 bool isDouble = false;
216 QLocale::c().toDouble(theText, &isDouble);
220 void ModuleBase_ParamSpinBox::showCompletion(bool checkPrefix)
222 myCompletePos = lineEdit()->cursorPosition();
225 aPrefix = getPrefix(aStart, aEnd);
227 if (aPrefix.length() > 0) {
228 myCompleter->setCompletionPrefix(aPrefix);
229 myCompleter->complete();
232 myCompleter->setCompletionPrefix(aPrefix);
233 myCompleter->complete();
237 void ModuleBase_ParamSpinBox::keyReleaseEvent(QKeyEvent* e)
242 case Qt::Key_Backspace:
243 if (myCompleter->popup()->isVisible()) {
244 myCompleter->popup()->hide();
246 showCompletion(true);
250 if (myCompleter->popup()->isVisible()) {
251 myCompleter->popup()->hide();
254 emit textChanged(lineEdit()->text());
257 if (e->modifiers() & Qt::ControlModifier) {
258 showCompletion(false);
262 if (aText.length() == 1) {
263 QChar aChar = aText.at(0);
264 if (isVariableSymbol(aChar)) {
265 showCompletion(true);
269 QAbstractSpinBox::keyReleaseEvent(e);
272 bool ModuleBase_ParamSpinBox::eventFilter(QObject* theObj, QEvent* theEvent)
274 if (theEvent->type() == QEvent::KeyRelease) {
275 keyReleaseEvent((QKeyEvent*)theEvent);
277 return QAbstractSpinBox::eventFilter(theObj, theEvent);
281 QString ModuleBase_ParamSpinBox::getPrefix(int& theStart, int& theEnd) const
284 QString aText = lineEdit()->text();
285 theStart = theEnd = myCompletePos;
286 const int aLen = aText.length();
288 if (myCompletePos > 0) {
289 int aLastChar = myCompletePos - 1;
290 QChar aChar = aText.at(aLastChar);
291 while (isVariableSymbol(aChar)) {
292 aPrefix.prepend(aText.at(aLastChar));
296 aChar = aText.at(aLastChar);
298 theStart = aLastChar + 1;
300 if (myCompletePos < aLen) {
301 int aLastChar = myCompletePos;
302 QChar aChar = aText.at(aLastChar);
303 while (isVariableSymbol(aChar)) {
304 aPrefix.append(aText.at(aLastChar));
306 if (aLastChar >= aLen)
308 aChar = aText.at(aLastChar);
317 void ModuleBase_ParamSpinBox::insertCompletion(const QString& theText)
319 QString aText = lineEdit()->text();
321 QString aPrefix = getPrefix(aStart, aEnd);
324 int aPrefLen = aPrefix.length();
326 aResult = aText.insert(myCompletePos, theText);
328 aResult = aText.left(aStart) + theText + aText.right(aText.length() - aEnd);
330 lineEdit()->setText(aResult);
335 void ModuleBase_ParamSpinBox::setValueEnabled(bool theEnable)
337 setReadOnly(!theEnable);
339 QPalette aPal = palette();
340 aPal.setColor(QPalette::All, QPalette::Base,
341 theEnable ? myEnabledBaseColor : aPal.color(QPalette::Disabled, QPalette::Base));