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),
49 myPrecision(thePrecision),
51 myAcceptVariables(true),
56 myCompleter = new QCompleter(this);
57 myCompleter->setWidget(lineEdit());
58 myCompleter->setCompletionMode(QCompleter::PopupCompletion);
60 myCompleterModel = new QStringListModel(this);
61 myCompleter->setModel(myCompleterModel);
62 connect(myCompleter, SIGNAL(highlighted(const QString&)),
63 this, SLOT(insertCompletion(const QString&)));
65 QAbstractItemView* aPopup = myCompleter->popup();
66 aPopup->installEventFilter(this);
68 // connectSignalsAndSlots();
69 myEnabledBaseColor = palette().color(QPalette::Active, QPalette::Base);
70 connect(lineEdit(), SIGNAL(textChanged(const QString&)),
71 this, SLOT(onTextChanged(const QString&)));
73 setLocale(QLocale::c());
75 myValidator = new QDoubleValidator(this);
76 myValidator->setLocale(locale());
77 myValidator->setRange(myMinimum, myMaximum);
78 myValidator->setDecimals(myPrecision);
81 void ModuleBase_ParamSpinBox::setCompletionList(QStringList& theList)
83 theList.removeDuplicates();
85 myCompleterModel->setStringList(theList);
91 ModuleBase_ParamSpinBox::~ModuleBase_ParamSpinBox()
97 \brief Perform \a steps increment/decrement steps.
99 Re-implemented to handle cases when Notebook variable
100 name is specified by the user as the widget text.
101 Otherwise, simply calls the base implementation.
103 \param steps number of increment/decrement steps
105 void ModuleBase_ParamSpinBox::stepBy(int steps)
110 double aVal = lineEdit()->text().toDouble();
111 aVal += steps * mySingleStep;
113 QAbstractSpinBox::stepBy(steps);
116 void ModuleBase_ParamSpinBox::onTextChanged(const QString& theText)
118 myIsEquation = hasVariable(theText);
119 emit textChanged(theText);
124 \brief This function is used to determine whether input is valid.
125 \param str currently entered value
126 \param pos cursor position in the string
127 \return validating operation result
129 QValidator::State ModuleBase_ParamSpinBox::validate(QString& str, int& pos) const
131 // Trying to interpret the current input text as a numeric value
132 if (!hasVariable(str)) {
133 /// If decimals = 0 do not accept '.' (interpret as int)
134 if ((myValidator->decimals() == 0) && str.endsWith('.'))
135 return QValidator::Invalid;
136 return myValidator->validate(str, pos);
139 return isAcceptVariables() ? QValidator::Acceptable : QValidator::Invalid;
143 \brief This function is used to set a current value for this spinbox.
144 \param value current value
146 The new value is ignored if the spinbox has a variable.
148 void ModuleBase_ParamSpinBox::setValue(double value)
150 myIsEquation = false;
152 if (aVal < myMinimum)
154 else if (aVal > myMaximum)
156 QString aText = QString::number(aVal, 'g', decimals());
157 lineEdit()->setText(aText);
158 emit textChanged(aText);
161 double ModuleBase_ParamSpinBox::value() const
163 return lineEdit()->text().toDouble();
167 \brief This function is used to set a text for this spinbox.
168 \param value current value
170 void ModuleBase_ParamSpinBox::setText(const QString& value)
172 myIsEquation = hasVariable(value);
173 if (myAcceptVariables && myIsEquation) {
174 lineEdit()->setText(value);
175 emit textChanged(value);
180 \brief Enables or disables variable names in the spin box.
181 By default, variable names are enabled.
182 \param flag If true, variable names are enabled.
184 void ModuleBase_ParamSpinBox::setAcceptVariables(const bool flag)
186 myAcceptVariables = flag;
187 if ((!myAcceptVariables) && myIsEquation) {
193 \brief Returns true if the spin box accepts variable names.
195 bool ModuleBase_ParamSpinBox::isAcceptVariables() const
197 return myAcceptVariables;
200 bool ModuleBase_ParamSpinBox::hasVariable() const
205 bool ModuleBase_ParamSpinBox::hasVariable(const QString& theText) const
207 bool isDouble = false;
208 QLocale::c().toDouble(theText, &isDouble);
212 void ModuleBase_ParamSpinBox::showCompletion()
214 myCompletePos = lineEdit()->cursorPosition();
217 aPrefix = getPrefix(aStart, aEnd);
218 if (aPrefix.length() > 0) {
219 myCompleter->setCompletionPrefix(aPrefix);
220 myCompleter->complete();
224 void ModuleBase_ParamSpinBox::keyReleaseEvent(QKeyEvent* e)
229 case Qt::Key_Backspace:
234 if (myCompleter->popup()->isVisible()) {
235 myCompleter->popup()->hide();
238 emit textChanged(lineEdit()->text());
242 if (aText.length() == 1) {
243 QChar aChar = aText.at(0);
244 if (isVariableSymbol(aChar)) {
249 QAbstractSpinBox::keyReleaseEvent(e);
252 bool ModuleBase_ParamSpinBox::eventFilter(QObject* theObj, QEvent* theEvent)
254 if (theEvent->type() == QEvent::KeyRelease) {
255 keyReleaseEvent((QKeyEvent*)theEvent);
257 return QAbstractSpinBox::eventFilter(theObj, theEvent);
261 QString ModuleBase_ParamSpinBox::getPrefix(int& theStart, int& theEnd) const
264 QString aText = lineEdit()->text();
265 theStart = theEnd = myCompletePos;
266 const int aLen = aText.length();
268 if (myCompletePos > 0) {
269 int aLastChar = myCompletePos - 1;
270 QChar aChar = aText.at(aLastChar);
271 while (isVariableSymbol(aChar)) {
272 aPrefix.prepend(aText.at(aLastChar));
276 aChar = aText.at(aLastChar);
278 theStart = aLastChar + 1;
280 if (myCompletePos < aLen) {
281 int aLastChar = myCompletePos;
282 QChar aChar = aText.at(aLastChar);
283 while (isVariableSymbol(aChar)) {
284 aPrefix.append(aText.at(aLastChar));
286 if (aLastChar >= aLen)
288 aChar = aText.at(aLastChar);
297 void ModuleBase_ParamSpinBox::insertCompletion(const QString& theText)
299 QString aText = lineEdit()->text();
301 QString aPrefix = getPrefix(aStart, aEnd);
304 int aPrefLen = aPrefix.length();
306 aResult = aText.insert(myCompletePos, theText);
308 aResult = aText.left(aStart) + theText + aText.right(aText.length() - aEnd);
310 lineEdit()->setText(aResult);
315 void ModuleBase_ParamSpinBox::setValueEnabled(bool theEnable)
317 setReadOnly(!theEnable);
319 QPalette aPal = palette();
320 aPal.setColor(QPalette::All, QPalette::Base,
321 theEnable ? myEnabledBaseColor : aPal.color(QPalette::Disabled, QPalette::Base));