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expressions-quadraticfrog
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Bladeren bron

Limpiando codigo. Todavia no entiendo todo

Rafael Arce Nazario 9 jaren geleden
bovenliggende
b755128b1f
commit
44c305727c
4 gewijzigde bestanden met toevoegingen van 145 en 181 verwijderingen
Zij-aan-zij weergave Toon Diff Stats
  1. 78
    97
      frog.cpp
  2. 9
    4
      frog.h
  3. 54
    80
      mainwindow.cpp
  4. 4
    0
      mainwindow.h

+ 78
- 97
frog.cpp Bestand weergeven 

@@ -7,27 +7,30 @@
7 7 
 #include "mainwindow.h"
8 8 
 #include "ui_mainwindow.h"
9 9
10 
-frog::frog(QWidget *parent) :
11 
-    QWidget(parent)
12 
-{
13 
-    myTimer= new QTimer(this);
14 
-    flag = xFlag = false;
10 
+
11 
+// Constructor for the frog class
12 
+
13 
+frog::frog(QWidget *parent) : QWidget(parent) {
14 
+
15 15 
     Ysapo = 190;
16 16 
     A = B = C = 0;
17 
+
18 
+    myTimer= new QTimer(this);
19 
+    flag = xFlag = false;
20 
+
21 
+    // These are the x positions of the background?
17 22 
     temp = 580;
18 23 
     temp2 = 0;
24 
+
19 25 
     backFlag = false;
20 26 
     moved = false;
21 
-    textBool = false;
22 
-    buttonCounter = 0;
23 
-    xnenu = -(rand() %30);
24 
-    Xsapo = xnenu;
25 
-    initialX = Xsapo;
26 
-    xnenu2 = (rand() % 100) + 100;
27 
-    xnenu3 = xnenu2 + (rand() % 100) + 200;
27 
+    showText = false;
28 
+
29 
+    computeNenuPositions();
28 30 
 }
29 31
30 
-void frog::updatenenu(){
32 
+
33 
+void frog::computeNenuPositions() {
31 34 
     xnenu = -(rand() % 30);
32 35 
     Xsapo = xnenu;
33 36 
     initialX = Xsapo;
 
@@ -43,44 +46,35 @@ void frog::reset(){
43 46 
     temp2 = 0;
44 47 
     backFlag = false;
45 48 
     moved = false;
46 
-    buttonCounter = 0;
47 
-    textBool = false;
49 
+    showText = false;
48 50 
     repaint();
49 51
50 52 
     myTimer->stop();
51 53 
     delete myTimer;
52 54 
     myTimer = new QTimer;
53 55 
     connect(myTimer, SIGNAL(timeout()), this, SLOT(mySlot()));
54 
-    xnenu = -(rand() %30);
55 
-    Xsapo = xnenu;
56 
-    initialX = Xsapo;
57 
-    xnenu2 = (rand() % 100) + 100;
58 
-    xnenu3 = xnenu2 + (rand() % 100) + 200;
59 56
57 
+    computeNenuPositions();
60 58 
 }
61 59
62 
-void frog::paintEvent(QPaintEvent *event){
60 
+void frog::paintEvent(QPaintEvent *){
63 61 
     QPainter p(this);
64 
-    QString frogger = ":/images/Frogger1.png";
62 
+    QString frogger  = ":/images/Frogger1.png";
65 63 
     QString frogger2 = ":/images/Frogger2.png";
66 64 
     QString frogger3 = ":/images/Frogger3.png";
67 
-    QString leaf = ":/images/Nenufar1.png";
68 
-    QString back = ":/images/background.jpg";
65 
+    QString leaf     = ":/images/Nenufar1.png";
66 
+    QString back     = ":/images/background.jpg";
69 67
70 
-//    Condiciones que permitian un rango de error (no caer en la x exacta de los nenufares)
68 
+    //    Condiciones que permitian un rango de error (no caer en la x exacta de los nenufares)
71 69
72 70 
     if(backFlag == true || (Xsapo <= (xnenu3 + 55) && Xsapo >= (xnenu3 - 55) && Ysapo == 190)
73 71 
             || (Xsapo > xnenu && Ysapo == 190 && Xsapo < (xnenu2-55))
74 72 
             || (Xsapo > xnenu2 && Ysapo == 190 && Xsapo < (xnenu3-55))
75 73 
             || (Xsapo > xnenu3 && Ysapo == 190)){
76 74
77 
-//    if(backFlag == true || (Ysapo == 190 && (Xsapo != xnenu && Xsapo != xnenu2))){
78 
-        if (inter1Label == NULL){
79 
-            delete inter1Label;
80 
-        }
81 
-        if (inter2Label == NULL){
82 
-            delete inter2Label;
83 
-        }
75 
+        if (inter1Label == NULL)    delete inter1Label;
76 
+        if (inter2Label == NULL)    delete inter2Label;
77 
+
84 78 
         backFlag = true;
85 79 
         myTimer->stop();
86 80 
         delete myTimer;
 
@@ -88,8 +82,6 @@ void frog::paintEvent(QPaintEvent *event){
88 82 
         QThread::msleep(5);
89 83 
         connect(myTimer, SIGNAL(timeout()), this, SLOT(mySlot()));
90 84
91 
-
92 
-
93 85 
         p.drawPixmap(temp2,-5,600,400,QPixmap(back));
94 86 
         p.drawPixmap(temp,-5,600,400,QPixmap(back));
95 87 
 
@@ -99,67 +91,57 @@ void frog::paintEvent(QPaintEvent *event){
99 91 
         p.drawPixmap(xnenu3,250,125,60,QPixmap(leaf));
100 92 
         p.drawText(xnenu3+45,290,"x2 = " + QString::number(xnenu3));
101 93
102 
-
103 
-
104 94 
         Xsapo=Xsapo-1;
105 95 
         xnenu=xnenu-1;
106 96 
         xnenu2=xnenu2-1;
107 97 
         xnenu3=xnenu3-1;
98 
+
99 
+
100 
+        // para que???
108 101 
         temp= temp - 1;
109 102 
         temp2 = temp2 -1;
110 103
111 
-
112 104 
         repaint();
113 105
114 
-
115 
-
116 106 
         if(temp == 0 || xnenu3 == -10 || Xsapo == 0){
117 107 
             backFlag = false;
118 108 
             temp = 580;
119 109 
             temp2 = 0;
120 110 
             moved = true;
121 
-            textBool = false;
122 
-            updatenenu();
111 
+            showText = false;
112 
+            computeNenuPositions();
123 113 
         }
124 114
125 115 
     }
126 116 
     else{
127 
-          QFont font = p.font();
128 
-          font.setBold(true);
129 
-          p.setFont(font);
130 
-
131 
-          p.drawPixmap(temp2,-5,600,400,QPixmap(back));
132 
-          p.drawPixmap(temp,-5,600,400,QPixmap(back));
133 
-          p.drawPixmap(xnenu,250,125,60,QPixmap(leaf));
134 
-          p.drawPixmap(xnenu2,250,125,60,QPixmap(leaf));
135 
-          p.drawPixmap(xnenu3,250,125,60,QPixmap(leaf));
136 
-
137 
-//          Cambiada la condicion para que sea exacta la caida en el nenufar
138 
-//          if(Xsapo < (xnenu2 + 55) && Ysapo == 190 && Xsapo > (xnenu2-55)){
139 
-//               textBool = true;
140 
-//          }
141 
-
142 
-          if(Ysapo == 190 && Xsapo == xnenu2){
143 
-            textBool = true;
144 
-          }
145 
-
146 
-          if(textBool){
147 
-              p.drawText(xnenu2+35,290,"x1 = " + QString::number(xnenu2));
148 
-              p.drawText(xnenu3+35,290,"x2 = " + QString::number(xnenu3));
149 
-              p.drawPixmap(xnenu,250,125,60,QPixmap(leaf));
150 
-          }
151 
-          else{
152 
-              p.drawText(xnenu2+35,290,"x2 = " + QString::number(xnenu2));
153 
-          }
117 
+        QFont font = p.font();
118 
+        font.setBold(true);
119 
+        p.setFont(font);
120 
+
121 
+        p.drawPixmap(temp2,-5,600,400,QPixmap(back));
122 
+        p.drawPixmap(temp,-5,600,400,QPixmap(back));
123 
+        p.drawPixmap(xnenu,250,125,60,QPixmap(leaf));
124 
+        p.drawPixmap(xnenu2,250,125,60,QPixmap(leaf));
125 
+        p.drawPixmap(xnenu3,250,125,60,QPixmap(leaf));
126 
+
127 
+        showText = (Ysapo == 190 && Xsapo == xnenu2);
128 
+
129 
+        if(showText){
130 
+            p.drawText(xnenu2+35,290,"x1 = " + QString::number(xnenu2));
131 
+            p.drawText(xnenu3+35,290,"x2 = " + QString::number(xnenu3));
132 
+            p.drawPixmap(xnenu,250,125,60,QPixmap(leaf));
133 
+        }
134 
+        else
135 
+            p.drawText(xnenu2+35,290,"x2 = " + QString::number(xnenu2));
154 136
155 137 
     }
156 138
157 
-//    Cambiada la condicion para que sea exacta la caida en el nenufar
139 
+    //    Cambiada la condicion para que sea exacta la caida en el nenufar
158 140 
     if(Xsapo > (xnenu + 55) && Ysapo == 190 && Xsapo < (xnenu2-55)
159 
-        || (Xsapo > (xnenu2 + 55) && Ysapo == 190 && Xsapo < (xnenu3-55))
160 
-        || (Xsapo > (xnenu3 + 55) && Ysapo == 190)){
141 
+            || (Xsapo > (xnenu2 + 55) && Ysapo == 190 && Xsapo < (xnenu3-55))
142 
+            || (Xsapo > (xnenu3 + 55) && Ysapo == 190)){
161 143
162 
-//    if(Ysapo == 190 && (Xsapo != xnenu && Xsapo != xnenu2 && Xsapo != xnenu3)){
144 
+        //    if(Ysapo == 190 && (Xsapo != xnenu && Xsapo != xnenu2 && Xsapo != xnenu3)){
163 145 
         p.drawPixmap(Xsapo, Ysapo + 30, 100, 80, QPixmap(frogger3));
164 146 
     }
165 147 
     else if(Ysapo < 190){
 
@@ -167,7 +149,7 @@ void frog::paintEvent(QPaintEvent *event){
167 149 
     }else if(Ysapo == 190){
168 150 
         qDebug() << "xsapo: " << Xsapo << "xnenu2: " << xnenu2;
169 151 
         p.drawPixmap(Xsapo,Ysapo,100,100,QPixmap(frogger));
170 
-        if(!textBool){
152 
+        if(!showText){
171 153 
             p.drawText(xnenu+45,290,"x1 = " + QString::number(xnenu+10));
172 154 
         }
173 155 
     }
 
@@ -179,45 +161,44 @@ frog::~frog(){
179 161 
 }
180 162
181 163
182 
-void frog::mySlot(){
164 
+void frog::animate(){
183 165 
     float interX1 = 0;
184 166 
     float interX2 = 0;
185 
-    float temp = 0;
186 167 
     float y = 0;
187 168 
     float xtemp = 0;
188 169 
     float xEnd = 0;
189 170
190 171
172 
+    // use the functions implemented by the programmer to
173 
+    // compute the x-intercept.
191 174
192 175 
     interX1 = QuadraticMinus(A,B,C);
193 176 
     interX2 = QuadraticPlus(A,B,C);
194 177
195 
-    if(interX1 > interX2){
196 
-        temp = interX1;
197 
-        interX1 = interX2;
198 
-        interX2 = temp;
199 
-    }
200 
-    if(moved){
178 
+    if (interX1 > interX2) std::swap(interX1, interX2);
179 
+
180 
+
181 
+    if (moved) {
201 182 
         moved = false;
202 
-        buttonCounter = 1;
203 183 
         initialX = Xsapo;
204 184 
     }
205 185
206 186 
     xEnd = interX2 + initialX;
207 
-        y = 1;
208 
-        xtemp = 1;
209 
-        if(!xFlag){
210 
-            Ysapo = Ysapo - y;
211 
-            Xsapo = Xsapo + xtemp;
212 
-        }
213 
-        else if(xFlag){
214 
-            Ysapo = Ysapo + y;
215 
-            Xsapo = Xsapo + xtemp;
216 
-        }
187 
+    y = 1;
188 
+    xtemp = 1;
217 189
218 
-        if(int(Xsapo) == int(xEnd/2)){
219 
-            xFlag = true;
220 
-        }
190 
+    if(!xFlag){
191 
+        Ysapo = Ysapo - y;
192 
+        Xsapo = Xsapo + xtemp;
193 
+    }
194 
+    else if(xFlag){
195 
+        Ysapo = Ysapo + y;
196 
+        Xsapo = Xsapo + xtemp;
197 
+    }
198 
+
199 
+    if(int(Xsapo) == int(xEnd/2)){
200 
+        xFlag = true;
201 
+    }
221 202
222 203 
     repaint();
223 204 
     if((int(Xsapo) == int(xEnd) && xFlag == true) || Ysapo == 190){
 
@@ -227,7 +208,7 @@ void frog::mySlot(){
227 208 
         myTimer->stop();
228 209 
         delete myTimer;
229 210 
         myTimer = new QTimer;
230 
-        connect(myTimer, SIGNAL(timeout()), this, SLOT(mySlot()));
211 
+        connect(myTimer, SIGNAL(timeout()), this, SLOT(animate()));
231 212
232 213 
         initialX = Xsapo;
233 214 
         xFlag = false;
 
@@ -240,7 +221,7 @@ void frog::run(int aa, int bb, int cc){
240 221 
     A = aa;
241 222 
     B = bb;
242 223 
     C = cc;
243 
-    buttonCounter++;
224 
+//    buttonCounter++;
244 225
245 226 
     connect(myTimer, SIGNAL(timeout()), this, SLOT(mySlot()));
246 227 
     myTimer->start(25);

+ 9
- 4
frog.h Bestand weergeven 

@@ -14,11 +14,16 @@ class frog : public QWidget
14 14 
 public:
15 15 
     explicit frog(QWidget *parent = 0);
16 16 
     float Ysapo, Xsapo, initialX;
17 
-    bool flag, xFlag, backFlag, moved, textBool;
18 
-    int A, B, C, buttonCounter,temp,temp2,xnenu,xnenu2,xnenu3;
17 
+    bool flag, xFlag, backFlag, moved, showText;
18 
+
19 
+    // coefficients from the quadratic formula
20 
+    int A, B, C;
21 
+
22 
+    int temp,temp2,xnenu,xnenu2,xnenu3;
19 23
20 24 
     double QuadraticPlus(int a, int b, int c);
21 25 
     double QuadraticMinus(int a, int b, int c);
26 
+    void computeNenuPositions();
22 27 
     ~frog();
23 28
24 29 
 private:
 
@@ -28,10 +33,10 @@ private:
28 33 
 signals:
29 34
30 35 
 public slots:
31 
-    void mySlot();
36 
+    void animate();
32 37 
     void run(int, int, int);
33 38 
     void reset();
34 
-    void updatenenu();
39 
+
35 40
36 41 
 protected:
37 42 
     void paintEvent(QPaintEvent *event);

+ 54
- 80
mainwindow.cpp Bestand weergeven 

@@ -14,7 +14,6 @@ MainWindow::MainWindow(QWidget *parent) :
14 14 
 {
15 15 
     quadraticFormulaCheck();
16 16
17 
-
18 17 
     ui->setupUi(this);
19 18 
     scene= new QGraphicsScene(this);
20 19 
     scene->setSceneRect(QRectF(QPointF(0,0), QPointF(0,0)));
 
@@ -32,15 +31,12 @@ MainWindow::MainWindow(QWidget *parent) :
32 31 
     ui->RunPushButton->move(10,385);
33 32 
     ui->retryButton->move(180,385);
34 33
35 
-
36 
-
37 34 
     frogger = new frog;
38 35
39 36 
     globalTimer = new QTimer;
40 37 
     scene->addWidget(frogger);
41 38
42 39 
     ui->RunPushButton->setEnabled(false);
43 
-
44 40 
 }
45 41
46 42 
 
@@ -50,26 +46,35 @@ MainWindow::~MainWindow()
50 46 
     delete scene;
51 47 
 }
52 48
49 
+// This function validates if the results from the QuadraticPlus and QuadraticMinus
50 
+// functions are correct. If they are not, then the program exits.
53 51
54 52 
 void MainWindow::quadraticFormulaCheck()
55 53 
 {
56 
-    // float firstX;
57 54 
     double resultFromFunction;
58 55 
     bool pass = true;
56 
+
57 
+
58 
+    // The values and valuesForMinus arrays contain precomputed a, b, c, and y values
59 
+    // for the quadratic equations. They are used for testing if the functions written by
60 
+    // the student are correct.
61 
+    // For example: if a = 357, b = -1000, c = 698, then y = 1.4804781099
62 
+
59 63 
     double values[] = {357 , -1000 , 698 , 1.4804781099 , 748 , -392 , 51 , 0.28391805554 ,
60 
-        689 , -689 , 172 , 0.519048482944 , 90 , 521 , 751 , -2.71178575308 , 5 , 107 ,
61 
-        465 , -6.0642692054 , 1609 , -983 , 150 , 0.314734649792 , 273 , 496 , 224 ,
62 
-        -0.839700867988 , 2 , 91 , 920 , -15.1630045473 , 48 , 300 , 463 , -2.77889067238 ,
63 
-        852 , 907 , 241 , -0.510947439149};
64 
+                       689 , -689 , 172 , 0.519048482944 , 90 , 521 , 751 , -2.71178575308 , 5 , 107 ,
65 
+                       465 , -6.0642692054 , 1609 , -983 , 150 , 0.314734649792 , 273 , 496 , 224 ,
66 
+                       -0.839700867988 , 2 , 91 , 920 , -15.1630045473 , 48 , 300 , 463 , -2.77889067238 ,
67 
+                       852 , 907 , 241 , -0.510947439149};
64 68
65 69 
     double valuesForMinus[] = {129 , -486 , 456 , 1.76744186047 , 384 , 980 , 625 , -1.30208333333 ,
66 
-        270 , -904 , 755 , 1.59515823795 , 67 , -450 , 752 , 3.12650485528 , 98 , 506 , 651 ,
67 
-        -2.72985550047 , 38 , -373 , 901 , 4.29396930804 , 273 , -282 , 72 , 0.461538461538 ,
68 
-        225 , -889 , 874 , 1.84 , 8 , 136 , 522 , -11.1457513111 , 5 , 77 , 214 , -11.760788100};
70 
+                               270 , -904 , 755 , 1.59515823795 , 67 , -450 , 752 , 3.12650485528 , 98 , 506 , 651 ,
71 
+                               -2.72985550047 , 38 , -373 , 901 , 4.29396930804 , 273 , -282 , 72 , 0.461538461538 ,
72 
+                               225 , -889 , 874 , 1.84 , 8 , 136 , 522 , -11.1457513111 , 5 , 77 , 214 , -11.760788100};
69 73
70 74 
     double a, b, c, expected;
71 75
72 
-    //Verifying if the equation written by the student is correct
76 
+    // Validate the QuadraticPlus function....
77 
+
73 78 
     for (int i = 0; i < 40 && pass; i+=4){
74 79 
         a        = values[i];
75 80 
         b        = values[i+1];
 
@@ -77,17 +82,16 @@ void MainWindow::quadraticFormulaCheck()
77 82 
         expected = values[i+3];
78 83
79 84 
         resultFromFunction = frogger->QuadraticPlus(a,b,c);
80 
-
81 
-        if( fabs(resultFromFunction - expected) > 0.00001) {
82 
-            pass = false;
83 
-        }
85 
+        pass = ( fabs(resultFromFunction - expected) < 0.00001) ;
84 86 
     }
87 
+
85 88 
     if(!pass){
86 89 
         QMessageBox::information(this, "Error", "La funcion cuadratica esta mal escrita!");
87 90 
         exit(1);
88 91 
     }
89 92
90 
-    //Verifying if the equation written by the student is correct
93 
+    // Validate the QuadraticMinus function....
94 
+
91 95 
     for (int i = 0; i < 40 && pass; i+=4){
92 96 
         a        = valuesForMinus[i];
93 97 
         b        = valuesForMinus[i+1];
 
@@ -95,97 +99,67 @@ void MainWindow::quadraticFormulaCheck()
95 99 
         expected = valuesForMinus[i+3];
96 100
97 101 
         resultFromFunction = frogger->QuadraticMinus(a,b,c);
98 
-
99 
-        if( fabs(resultFromFunction - expected) > 0.00001) {
100 
-            pass = false;
101 
-        }
102 
+        pass =  ( fabs(resultFromFunction - expected) < 0.00001 );
102 103 
     }
104 
+
103 105 
     if(!pass){
104 106 
         QMessageBox::information(this, "Error", "La funcion cuadratica esta mal escrita!");
105 107 
         exit(1);
106 108 
     }
107 109 
 }
108 110
109 
-void MainWindow::on_RunPushButton_clicked()
110 
-{
111 
-    int a = 0;
112 
-    int b = 0;
113 
-    int c = 0;
114 
-    int det = 0;
111 
+void MainWindow::clearTheTextBoxes() {
112 
+    ui->alineEdit->clear();
113 
+    ui->blineEdit->clear();
114 
+    ui->clineEdit->clear();
115 
+}
116 
+
117 
+bool MainWindow::aTextBoxIsEmpty() {
118 
+    return (ui->alineEdit->text().length() == 0 ||
119 
+            ui->blineEdit->text().length() == 0 ||
120 
+            ui->clineEdit->text().length() == 0);
121 
+}
122 
+
123 
+
124 
+void MainWindow::on_RunPushButton_clicked() {
125 
+    int a = 0, b = 0, c = 0;
126 
+    int det;
127 
+
115 128 
     a = (ui->alineEdit->text().toInt());
116 129 
     b = (ui->blineEdit->text().toInt());
117 130 
     c = (ui->clineEdit->text().toInt());
118 131
119 132 
     det = (pow(b,2) - (4*a*c));
120 133
121 
-    if(a > 0){
134 
+    if(a > 0)
122 135 
         QMessageBox::information(this, "Error", "La parabola abre hacia arriba y por lo tanto el sapo no brincara");
123 
-        ui->alineEdit->clear();
124 
-        ui->blineEdit->clear();
125 
-        ui->clineEdit->clear();
126 
-    }
127 
-    else if(a == 0){
136 
+    else if(a == 0)
128 137 
         QMessageBox::information(this, "Error", "No hay parabola y por lo tanto el sapo no brincara");
129 
-        ui->alineEdit->clear();
130 
-        ui->blineEdit->clear();
131 
-        ui->clineEdit->clear();
132 
-    }
133 
-    else{
134 
-        if(det < 0){
138 
+    else {
139 
+        if(det < 0)
135 140 
             QMessageBox::information(this, "Error", "No tiene intercepto y por lo tanto el sapo no brincara");
136 
-            ui->alineEdit->clear();
137 
-            ui->blineEdit->clear();
138 
-            ui->clineEdit->clear();
139 
-        }
140 
-        else if(det == 0){
141 
+        else if(det == 0)
141 142 
             QMessageBox::information(this, "Error", "El vertice esta en el intercepto y por lo tanto el sapo no brincara");
142 
-            ui->alineEdit->clear();
143 
-            ui->blineEdit->clear();
144 
-            ui->clineEdit->clear();
145 
-        }
146 143 
         else{
147 144 
             frogger->run(a, b, c);
148 145 
             ui->RunPushButton->setEnabled(false);
149 
-            ui->alineEdit->clear();
150 
-            ui->blineEdit->clear();
151 
-            ui->clineEdit->clear();
152 146 
         }
153 147 
     }
154 
-
155 
-
148 
+    clearTheTextBoxes();
156 149 
 }
157 150
158 
-void MainWindow::on_retryButton_clicked()
159 
-{
151 
+void MainWindow::on_retryButton_clicked() {
160 152 
     frogger->reset();
161 153 
 }
162 154
163 
-void MainWindow::on_alineEdit_textChanged(const QString &)
164 
-{
165 
-    if(ui->alineEdit->text() != "" && ui->blineEdit->text() != "" && ui->clineEdit->text() != "" ){
166 
-        ui->RunPushButton->setEnabled(true);
167 
-    }
168 
-    else{
169 
-        ui->RunPushButton->setEnabled(false);
170 
-    }
155 
+void MainWindow::on_alineEdit_textChanged(const QString &) {
156 
+    ui->RunPushButton->setEnabled(!aTextBoxIsEmpty());
171 157 
 }
172 158
173 
-void MainWindow::on_blineEdit_textChanged(const QString &)
174 
-{
175 
-    if(ui->alineEdit->text() != "" && ui->blineEdit->text() != "" && ui->clineEdit->text() != "" ){
176 
-        ui->RunPushButton->setEnabled(true);
177 
-    }
178 
-    else{
179 
-        ui->RunPushButton->setEnabled(false);
180 
-    }
159 
+void MainWindow::on_blineEdit_textChanged(const QString &) {
160 
+    ui->RunPushButton->setEnabled(!aTextBoxIsEmpty());
181 161 
 }
182 162
183 
-void MainWindow::on_clineEdit_textChanged(const QString &)
184 
-{
185 
-    if(ui->alineEdit->text() != "" && ui->blineEdit->text() != "" && ui->clineEdit->text() != "" ){
186 
-        ui->RunPushButton->setEnabled(true);
187 
-    }
188 
-    else{
189 
-        ui->RunPushButton->setEnabled(false);
190 
-    }
163 
+void MainWindow::on_clineEdit_textChanged(const QString &) {
164 
+    ui->RunPushButton->setEnabled(!aTextBoxIsEmpty());
191 165 
 }

+ 4
- 0
mainwindow.h Bestand weergeven 

@@ -30,6 +30,10 @@ private slots:
30 30
31 31 
     void on_clineEdit_textChanged(const QString &arg1);
32 32
33 
+    void clearTheTextBoxes();
34 
+
35 
+    bool aTextBoxIsEmpty();
36 
+
33 37 
 private:
34 38 
     Ui::MainWindow *ui;
35 39 
     QGraphicsScene*scene;