fullfilled requirements

sources/mainwindow.cpp

@@ -6,6 +6,7 @@ MainWindow::MainWindow(QWidget *parent)
     , ui(new Ui::MainWindow)
 {
     ui->setupUi(this);
+    setWindowTitle("Square Multiply Calculator");
 
     spinBase = ui->spinBase;
     spinExp = ui->spinExp;

sources/mainwindow.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>333</width>
-    <height>564</height>
+    <height>416</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -20,34 +20,42 @@
       <x>10</x>
       <y>10</y>
       <width>311</width>
-      <height>71</height>
+      <height>31</height>
      </rect>
     </property>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
       <widget class="QLabel" name="labBase">
        <property name="text">
-        <string>Base:</string>
+        <string>base:</string>
        </property>
       </widget>
      </item>
      <item>
-      <widget class="QSpinBox" name="spinBase"/>
+      <widget class="QSpinBox" name="spinBase">
+       <property name="maximum">
+        <number>9999</number>
+       </property>
+      </widget>
      </item>
      <item>
       <widget class="QLabel" name="labExp">
        <property name="text">
-        <string>Exponent:</string>
+        <string>exponent:</string>
        </property>
       </widget>
      </item>
      <item>
-      <widget class="QSpinBox" name="spinExp"/>
+      <widget class="QSpinBox" name="spinExp">
+       <property name="maximum">
+        <number>9999</number>
+       </property>
+      </widget>
      </item>
      <item>
       <widget class="QLabel" name="labMod">
        <property name="text">
-        <string>Modulus:</string>
+        <string>modulos:</string>
        </property>
       </widget>
      </item>
@@ -56,6 +64,9 @@
        <property name="minimum">
         <number>1</number>
        </property>
+       <property name="maximum">
+        <number>9999</number>
+       </property>
       </widget>
      </item>
     </layout>
@@ -64,11 +75,14 @@
     <property name="geometry">
      <rect>
       <x>10</x>
-      <y>90</y>
+      <y>50</y>
       <width>311</width>
-      <height>421</height>
+      <height>321</height>
      </rect>
     </property>
+    <property name="selectionMode">
+     <enum>QAbstractItemView::NoSelection</enum>
+    </property>
     <attribute name="verticalHeaderStretchLastSection">
      <bool>false</bool>
     </attribute>

sources/sqmtablemodel.cpp

@@ -1,6 +1,7 @@
 #include "sqmtablemodel.h"
 #include <algorithm>
 #include <QColor>
+#include <QRegularExpression>
 
 
 SQMTableModel::SQMTableModel(QObject *parent)
@@ -32,28 +33,16 @@ QVariant SQMTableModel::data(const QModelIndex &index, int role) const {
 
         break;
     case Qt::ForegroundRole:
-        if (changedHere.isValid()) {
-
-
+        if (changedHere.isValid() && highlightChanged) {
             if ((row > changedHere.row() || (col >= changedHere.column() && row == changedHere.row())) && (col != 0 || changedHere.column() == 0)) {
                 result = QColor(Qt::red);
             }
         }
         break;
+    case Qt::TextAlignmentRole:
+        result = Qt::AlignRight;
+        break;
     }
-
-//    if (role == Qt::DisplayRole) {
-//        int row = index.row();
-//        int col = index.column();
-//        QString result;
-//        try {
-//            result = QString::number(sqmMatrix.at(col).at(row));
-//        } catch (...) {
-//            result = "x";
-//        }
-
-//        return result;
-//    }
     return result;
 
 }
@@ -81,14 +70,14 @@ bool SQMTableModel::setData(const QModelIndex &index, const QVariant &value, int
         int row = index.row();
         int col = index.column();
 
-        if (col == 0 && value.toInt() != 0 && value.toInt() != 1) {
+        if (col == 0 && value.toInt() != 0 && value.toInt() != 1)  {
             return false;
         }
 
         // call calculateSqmMatrix
         sqmMatrix.at(col).at(row) = value.toInt();
         changedHere = index;
-
+        highlightChanged = true;
         UpdateSqmMatrix(index);
         return true;
     }
@@ -106,7 +95,7 @@ void SQMTableModel::SetStartValues(int pBase, int pExp, int pMod) {
     base = pBase;
     exp = pExp;
     mod = pMod;
-
+    highlightChanged = false;
     //changedHere.model()->index(-1, -1, QModelIndex());
     CalculateSqmMatrix();
 }

sources/sqmtablemodel.h

@@ -27,6 +27,7 @@ private:
     int exp;
     int mod;
     int binLen = 0;
+    bool highlightChanged;
     QModelIndex changedHere;
 
     vector<vector <int>> sqmMatrix;