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+/***************************************************************************
+ exerciseconvert.h
+ -------------------
+ begin : 2004/06/04
+ copyright : (C) 2004 by Sebastian Stein
+ email : seb.kde@hpfsc.de
+ ***************************************************************************/
+
+/***************************************************************************
+ * *
+ * 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. *
+ * *
+ ***************************************************************************/
+
+#include "exercisefactorize.h"
+#include "exercisefactorize.moc"
+
+/* these includes are needed for KDE support */
+#include <kapplication.h>
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <knumvalidator.h>
+
+/* these includes are needed for Qt support */
+#include <qlabel.h>
+#include <qlayout.h>
+#include <qlineedit.h>
+#include <qpushbutton.h>
+#include <qtooltip.h>
+#include <qwhatsthis.h>
+
+/* standard C++ library includes */
+#include <stdlib.h>
+
+#include "factorizedwidget.h"
+#include "primenumber.h"
+#include "rationalwidget.h"
+#include "resultwidget.h"
+#include "settingsclass.h"
+
+/* ----- public member functions ----- */
+
+/* constructor */
+ExerciseFactorize::ExerciseFactorize(QWidget * parent, const char * name):
+ ExerciseBase(parent, name)
+{
+ QPalette pal;
+ QColorGroup cg;
+#ifdef DEBUG
+ kdDebug() << "constructor ExerciseFactorize()" << endl;
+#endif
+
+ /* create a new task */
+ QApplication::setOverrideCursor(waitCursor); /* show the sand clock */
+ createTask();
+ QApplication::restoreOverrideCursor(); /* show the normal cursor */
+
+ // the next thing to do on a button click would be to check the entered
+ // result
+ m_currentState = _CHECK_TASK;
+
+ Form1Layout = new QVBoxLayout( this, 11, 6, "Form1Layout");
+
+ layout9 = new QVBoxLayout( 0, 0, 6, "layout9");
+
+ // The following method fix the problem in
+ // bug #116831, reverse order in RTL desktops.
+ // Amit Ramon amit.ramon@kdemail.net
+ layout4 = createFactorsLayout();
+ layout9->addLayout(layout4);
+
+ spacer2 = new QSpacerItem( 20, 21, QSizePolicy::Minimum, QSizePolicy::Expanding );
+ layout9->addItem( spacer2 );
+
+ layout2 = new QVBoxLayout( 0, 0, 6, "layout2");
+
+ // The following method fix the problem in
+ // bug #116831, reverse order in RTL desktops.
+ // Amit Ramon amit.ramon@kdemail.net
+ layout1 = createButtonsLayout();
+ layout2->addLayout(layout1);
+
+ m_removeLastFactorButton = new QPushButton( this, "m_removeLastFactorButton" );
+ layout2->addWidget( m_removeLastFactorButton );
+ layout9->addLayout( layout2 );
+
+ spacer4 = new QSpacerItem( 20, 21, QSizePolicy::Minimum, QSizePolicy::Expanding );
+ layout9->addItem( spacer4 );
+
+ layout7 = new QHBoxLayout( 0, 0, 6, "layout7");
+ spacer3 = new QSpacerItem( 361, 20, QSizePolicy::Expanding, QSizePolicy::Minimum );
+ layout7->addItem( spacer3 );
+
+ m_checkButton = new QPushButton( this, "m_checkButton" );
+ layout7->addWidget( m_checkButton );
+ layout9->addLayout( layout7 );
+ Form1Layout->addLayout( layout9 );
+
+ // the current task
+ QString tmp_str;
+ tmp_str.setNum(m_taskNumber);
+ m_taskLabel->setText(tmp_str);
+
+ // now set the color for the task label
+ m_taskLabel->setPaletteForegroundColor(SettingsClass::numberColor());
+
+ // the equal sign
+ m_equalSignLabel->setText("=");
+
+ // now set the color for the equal sign
+ m_equalSignLabel->setPaletteForegroundColor(SettingsClass::operationColor());
+
+ // the wrong/correct label, we hide it
+ result_label->setText(i18n("WRONG"));
+ result_label->hide();
+
+ // the prime factor buttons
+ m_factor2Button->setText( i18n( "2" ) );
+ m_factor3Button->setText( i18n( "3" ) );
+ m_factor5Button->setText( i18n( "5" ) );
+ m_factor7Button->setText( i18n( "7" ) );
+ m_factor11Button->setText( i18n( "11" ) );
+ m_factor13Button->setText( i18n( "13" ) );
+ m_factor17Button->setText( i18n( "17" ) );
+ m_factor19Button->setText( i18n( "19" ) );
+ QObject::connect(m_factor2Button, SIGNAL(clicked()), this, SLOT(slotFactor2ButtonClicked()));
+ QObject::connect(m_factor3Button, SIGNAL(clicked()), this, SLOT(slotFactor3ButtonClicked()));
+ QObject::connect(m_factor5Button, SIGNAL(clicked()), this, SLOT(slotFactor5ButtonClicked()));
+ QObject::connect(m_factor7Button, SIGNAL(clicked()), this, SLOT(slotFactor7ButtonClicked()));
+ QObject::connect(m_factor11Button, SIGNAL(clicked()), this, SLOT(slotFactor11ButtonClicked()));
+ QObject::connect(m_factor13Button, SIGNAL(clicked()), this, SLOT(slotFactor13ButtonClicked()));
+ QObject::connect(m_factor17Button, SIGNAL(clicked()), this, SLOT(slotFactor17ButtonClicked()));
+ QObject::connect(m_factor19Button, SIGNAL(clicked()), this, SLOT(slotFactor19ButtonClicked()));
+
+ // add tooltips to the factor buttons
+ QToolTip::add(m_factor2Button, i18n("Add prime factor 2."));
+ QToolTip::add(m_factor3Button, i18n("Add prime factor 3."));
+ QToolTip::add(m_factor5Button, i18n("Add prime factor 5."));
+ QToolTip::add(m_factor7Button, i18n("Add prime factor 7."));
+ QToolTip::add(m_factor11Button, i18n("Add prime factor 11."));
+ QToolTip::add(m_factor13Button, i18n("Add prime factor 13."));
+ QToolTip::add(m_factor17Button, i18n("Add prime factor 17."));
+ QToolTip::add(m_factor19Button, i18n("Add prime factor 19."));
+
+ // the remove last factor button
+ m_removeLastFactorButton->setText( i18n( "&Remove Last Factor" ) );
+ m_removeLastFactorButton->setEnabled(false);
+ QObject::connect(m_removeLastFactorButton, SIGNAL(clicked()), this, SLOT(slotRemoveLastFactorButtonClicked()));
+ QToolTip::add(m_removeLastFactorButton, i18n("Removes the last entered prime factor."));
+
+ // the check task button
+ m_checkButton->setText( i18n( "&Check Task" ) );
+ QToolTip::add(m_checkButton, i18n("Click on this button to check your result. The button will not work if you have not entered a result yet."));
+ QObject::connect(m_checkButton, SIGNAL(clicked()), this, SLOT(slotCheckButtonClicked()));
+ m_checkButton->setDefault(true); // is the default button of the dialog
+
+ // that the user can start choosing the prime factors
+ m_factor2Button->setFocus();
+
+ // set the tab order
+ setTabOrder(m_factor2Button, m_factor3Button);
+ setTabOrder(m_factor3Button, m_factor5Button);
+ setTabOrder(m_factor5Button, m_factor7Button);
+ setTabOrder(m_factor7Button, m_factor11Button);
+ setTabOrder(m_factor13Button, m_factor17Button);
+ setTabOrder(m_factor17Button, m_factor19Button);
+ setTabOrder(m_factor19Button, m_removeLastFactorButton);
+
+ // add tooltip and qwhatsthis help to the widget
+ QToolTip::add(this, i18n("In this exercise you have to factorize a given number."));
+ QWhatsThis::add(this, i18n("In this exercise you have to factorize a given number. You have to enter all prime factors of the number. You can add a prime factor by clicking on the corresponding button. The chosen prime factors will be shown in the input field. Do not forget to enter all prime factors, even when a prime factor repeats several times!"));
+}
+
+/* destructor */
+ExerciseFactorize::~ExerciseFactorize()
+{
+#ifdef DEBUG
+ kdDebug() << "destructor ExerciseFactorize()" << endl;
+#endif
+
+ /* no need to delete any child widgets, Qt does it by itself */
+}
+
+/** resets the current state, creates a new task and count the last task as
+ * wrong, if it wasn't solved (in _NEXT_TASK state) yet
+ * mainly used after changing the task parameters */
+void ExerciseFactorize::forceNewTask()
+{
+#ifdef DEBUG
+ kdDebug() << "forceNewTask ExerciseFactorize()" << endl;
+#endif
+
+ if (m_currentState == _CHECK_TASK)
+ {
+ // emit the signal for wrong
+ signalExerciseSolvedWrong();
+ }
+ m_currentState = _CHECK_TASK;
+ m_checkButton->setText(i18n("&Check Task"));
+
+ // generate next task
+ (void) nextTask();
+}
+
+
+/* ------ public slots ------ */
+
+void ExerciseFactorize::update()
+{
+ // now set the color for the task label
+ m_taskLabel->setPaletteForegroundColor(SettingsClass::numberColor());
+
+ // now set the color for the equal sign
+ m_equalSignLabel->setPaletteForegroundColor(SettingsClass::operationColor());
+
+ // and the factors
+ m_factorsWidget->updateAndRepaint();
+
+ // update for itself
+ ((QWidget *) this)->update();
+}
+
+
+/* ------ private member functions ------ */
+
+//
+// The following method was added to fix
+// bug #116831 (reverse layout in RTL desktops)
+// Amit Ramon amit.ramon@kdemail.net
+//
+
+/** Create the layout that hold the exercise widgets
+ */
+QHBoxLayout* ExerciseFactorize::createFactorsLayout()
+{
+ // first create all widgets
+ QHBoxLayout* layout = new QHBoxLayout( 0, 0, 6, "layout4");
+
+ m_taskLabel = new QLabel( this, "m_taskLabel" );
+
+ m_equalSignLabel = new QLabel( this, "m_equalSignLabel" );
+
+ m_factorsEnteredEdit = new QLineEdit( this, "m_factorsEnteredEdit" );
+ m_factorsEnteredEdit->setReadOnly(true);
+ m_factorsEnteredEdit->setEnabled(false);
+ m_factorsEnteredEdit->setPaletteForegroundColor(QColor(0, 0, 0));
+
+ m_factorsWidget =
+ new FactorizedWidget( this, "m_factorsWidget", m_factorsResult);
+
+ m_factorsWidget->hide();
+
+ result_label = new QLabel( this, "result_label" );
+
+ spacer1 = new QSpacerItem( 25, 20, QSizePolicy::Expanding,
+ QSizePolicy::Minimum );
+
+ // now add the widgets to the layout.
+ // if we are in a RTL desktop, add them
+ // in a reverse order
+ if (QApplication::reverseLayout())
+ {
+ layout->addItem( spacer1 );
+ layout->addWidget( result_label );
+ layout->addWidget( m_factorsWidget );
+ layout->addWidget( m_factorsEnteredEdit );
+ layout->addWidget( m_equalSignLabel );
+ layout->addWidget( m_taskLabel );
+ }
+ else
+ {
+ layout->addWidget( m_taskLabel );
+ layout->addWidget( m_equalSignLabel );
+ layout->addWidget( m_factorsEnteredEdit );
+ layout->addWidget( m_factorsWidget );
+ layout->addWidget( result_label );
+ layout->addItem( spacer1 );
+ }
+
+ return layout;
+}
+
+
+//
+// The following method was added to fix
+// bug #116831 (reverse layout in RTL desktops)
+// Amit Ramon amit.ramon@kdemail.net
+//
+
+/** Create the layout that hold the exercise widgets
+ */
+QGridLayout* ExerciseFactorize::createButtonsLayout()
+{
+ const int _COLS = 4; // number of buttons in each row
+ const int _ROWS = 2; // number of rows
+
+ QGridLayout* layout = new QGridLayout( 0, 1, 1, 0, 6, "layout1");
+
+ // first row buttons
+ m_factor2Button = new QPushButton( this, "m_factor2Button" );
+ m_factor3Button = new QPushButton( this, "m_factor3Button" );
+ m_factor5Button = new QPushButton( this, "m_factor5Button" );
+ m_factor7Button = new QPushButton( this, "m_factor7Button" );
+
+ // second row buttons
+ m_factor11Button = new QPushButton( this, "m_factor11Button" );
+ m_factor13Button = new QPushButton( this, "m_factor13Button" );
+ m_factor17Button = new QPushButton( this, "m_factor17Button" );
+ m_factor19Button = new QPushButton( this, "m_factor19Button" );
+
+ // temp array to help with adding the buttons
+ // to the grid
+ QPushButton* buttons[_ROWS][_COLS] =
+ {
+ {
+ m_factor2Button,
+ m_factor3Button,
+ m_factor5Button,
+ m_factor7Button
+ },
+ {
+ m_factor11Button,
+ m_factor13Button,
+ m_factor17Button,
+ m_factor19Button
+ }
+ };
+
+
+ int buttonIdxStart = 0;
+ int step = 1;
+
+ // if we are in a RTL desktop, this helps adding the
+ // buttons in a reverse order
+ if (QApplication::reverseLayout())
+ {
+ buttonIdxStart = _COLS - 1;
+ step = -1;
+ }
+
+ // now add the buttons to the grid
+ for (int row = 0; row < _ROWS; row++)
+ {
+ int buttonIdx = buttonIdxStart;
+
+ for (int col = 0; col < _COLS; col++)
+ {
+ layout->addWidget(buttons[row][buttonIdx], row, col );
+ buttonIdx += step;
+ }
+ }
+
+ return layout;
+}
+
+
+void ExerciseFactorize::createTask()
+{
+ uint uint_number;
+ primenumber tmp_primenumber;
+
+ // just pick one number out of the possible numbers to factorize
+ m_taskNumber = possibleTasks[uint((double(rand()) / RAND_MAX) * numberPossibleTasks)];
+
+ // now get the primefactors of the taskNumber
+ m_factorsResult.clear();
+ uint_number = m_taskNumber;
+ tmp_primenumber.move_first();
+ do
+ {
+ // check if the current primenumber is a divisor
+ if (uint_number % tmp_primenumber.get_current() != 0)
+ {
+ // no, it is not a divisor, go on with next primenumber
+ tmp_primenumber.move_forward();
+ } else {
+ // current primenumber is a divisor
+ m_factorsResult.append(tmp_primenumber.get_current());
+ uint_number = uint(uint_number / tmp_primenumber.get_current());
+ }
+ } while (uint_number != 1);
+
+ return;
+}
+
+/** - checks, if the user solved the task correctly
+ - emits signals if task was solved correctly or wrong */
+void ExerciseFactorize::showResult()
+{
+ QString tmp_str, tmp_str2; /* to build a string for a label */
+ QPalette pal;
+ QColorGroup cg;
+ uint uint_result = 0;
+
+ // change the tooltip of the check button
+ QToolTip::add(m_checkButton, i18n("Click on this button to get to the next task."));
+
+ // disable prime factor buttons
+ m_factor2Button->setEnabled(false);
+ m_factor3Button->setEnabled(false);
+ m_factor5Button->setEnabled(false);
+ m_factor7Button->setEnabled(false);
+ m_factor11Button->setEnabled(false);
+ m_factor13Button->setEnabled(false);
+ m_factor17Button->setEnabled(false);
+ m_factor19Button->setEnabled(false);
+
+ // disable factor removal button as well
+ m_removeLastFactorButton->setEnabled(false);
+
+ // show the result
+ m_factorsWidget->setFactors(m_factorsResult);
+ m_factorsWidget->show();
+
+ // now calculate the product of the prime factors entered by the user
+ for (uint tmp_uint = 0; tmp_uint < m_factorsEntered.count(); tmp_uint++)
+ {
+ if (tmp_uint == 0)
+ {
+ uint_result = m_factorsEntered[0];
+ } else {
+ uint_result *= m_factorsEntered[tmp_uint];
+ }
+ }
+
+ if (uint_result == m_taskNumber)
+ {
+ // emit the signal for correct
+ signalExerciseSolvedCorrect();
+
+ /* yes, the user entered the correct result */
+ result_label->setText(i18n("CORRECT"));
+ pal = result_label->palette(); /* set green font color */
+ cg = pal.active();
+ cg.setColor(QColorGroup::Foreground, QColor(6, 179, 0));
+ pal.setActive(cg);
+ cg = pal.inactive();
+ cg.setColor(QColorGroup::Foreground, QColor(6, 179, 0));
+ pal.setInactive(cg);
+ result_label->setPalette(pal);
+ } else {
+ // emit the signal for wrong
+ signalExerciseSolvedWrong();
+
+ /* no, the user entered the wrong result */
+ result_label->setText(i18n("WRONG"));
+ pal = result_label->palette(); /* set red font color */
+ cg = pal.active();
+ cg.setColor(QColorGroup::Foreground, QColor(red));
+ pal.setActive(cg);
+ cg = pal.inactive();
+ cg.setColor(QColorGroup::Foreground, QColor(red));
+ pal.setInactive(cg);
+ result_label->setPalette(pal);
+
+ } /* if (entered_result == result) */
+
+ result_label->show(); /* show the result at the end of the task */
+
+ return;
+}
+
+/** generate the next task and show it to the user */
+void ExerciseFactorize::nextTask()
+{
+ // change the tooltip of the check button
+ QToolTip::add(m_checkButton, i18n("Click on this button to check your result. The button will not work if you have not entered a result yet."));
+
+ // enable prime factor buttons
+ m_factor2Button->setEnabled(true);
+ m_factor3Button->setEnabled(true);
+ m_factor5Button->setEnabled(true);
+ m_factor7Button->setEnabled(true);
+ m_factor11Button->setEnabled(true);
+ m_factor13Button->setEnabled(true);
+ m_factor17Button->setEnabled(true);
+ m_factor19Button->setEnabled(true);
+
+ // disable the factor removal button, there are no factors to be removed yet
+ m_removeLastFactorButton->setEnabled(false);
+
+ result_label->hide(); /* do not show the result at the end of the task */
+ m_factorsWidget->hide();
+
+ /* clear user input */
+ m_factorsEntered.clear();
+ m_factorsResult.clear();
+ m_factorsEnteredEdit->setText("");
+
+ m_factor2Button->setFocus();
+
+ /* create a new task */
+ QApplication::setOverrideCursor(waitCursor); /* show the sand clock */
+ createTask();
+ QApplication::restoreOverrideCursor(); /* show the normal cursor */
+
+ // update the task widget
+ QString tmp_str;
+ tmp_str.setNum(m_taskNumber);
+ m_taskLabel->setText(tmp_str);
+
+ return;
+}
+
+void ExerciseFactorize::addFactor(uint factor)
+{
+ // add the new entered factor
+ m_factorsEntered.append(factor);
+
+ // a factor was added, so the user can can remove one again
+ m_removeLastFactorButton->setEnabled(true);
+
+ // update the line edit
+ updateEnteredEdit();
+
+ return;
+}
+
+void ExerciseFactorize::updateEnteredEdit()
+{
+ // the string to be shown in the entered edit
+ QString str_output = "";
+ QString str_tmp;
+
+ // find the end of the list
+ uintList::iterator it;
+
+
+ for (it = m_factorsEntered.begin(); it != m_factorsEntered.end(); ++it)
+ {
+ // convert the factor into a string
+ str_tmp.setNum(*it);
+
+ // add the factor with a *
+ if (it == m_factorsEntered.begin())
+ {
+ str_output = str_tmp;
+ } else {
+ str_output += " * " + str_tmp;
+ }
+ }
+
+ // set the text into the line edit
+ m_factorsEnteredEdit->setText(str_output);
+
+ return;
+}
+
+/* ------ private slots ------ */
+
+void ExerciseFactorize::slotCheckButtonClicked()
+{
+ if (m_currentState == _CHECK_TASK)
+ {
+ // if nothing has been entered by the user, we don't check the result yet
+ if (m_factorsEntered.count() == 0)
+ return;
+ m_currentState = _NEXT_TASK;
+ m_checkButton->setText(i18n("N&ext Task"));
+ (void) showResult();
+ } else {
+ m_currentState = _CHECK_TASK;
+ m_checkButton->setText(i18n("&Check Task"));
+ (void) nextTask();
+ }
+
+ // update the line edit
+ updateEnteredEdit();
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor2ButtonClicked()
+{
+ addFactor(2);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor3ButtonClicked()
+{
+ addFactor(3);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor5ButtonClicked()
+{
+ addFactor(5);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor7ButtonClicked()
+{
+ addFactor(7);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor11ButtonClicked()
+{
+ addFactor(11);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor13ButtonClicked()
+{
+ addFactor(13);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor17ButtonClicked()
+{
+ addFactor(17);
+
+ return;
+}
+
+void ExerciseFactorize::slotFactor19ButtonClicked()
+{
+ addFactor(19);
+
+ return;
+}
+
+void ExerciseFactorize::slotRemoveLastFactorButtonClicked()
+{
+ if (m_factorsEntered.count() > 0)
+ {
+ // find the end of the list
+ uintList::iterator it = m_factorsEntered.end();
+ --it;
+
+ // remove last item
+ m_factorsEntered.remove(it);
+ }
+
+ // if the list is empty, we have to disable the delete button
+ if (m_factorsEntered.count() == 0)
+ m_removeLastFactorButton->setEnabled(false);
+
+ // update the line edit
+ updateEnteredEdit();
+
+ return;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-24 03:32:23 +0000