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Access to the user interface

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #9

    The debugger is your friend ;)

    since you wrote it crashes here

    @MyFxhnn -> ui -> itsText->clear();@

    Are you sure everything is valid ?

    Interested in AI ? www.idiap.ch
    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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    • L Offline
      L Offline
      leon2225
      wrote on last edited by
      #10

      No that problem is fixed.
      Also the debugger doesn't say anything, the only problem is, that the function openContent() doesn't write the data into itsContent ..

      @bool Data::openContent(){
      QString fileName = QFileDialog::getOpenFileName(MyFxhnn, tr("Inhalt öffnen"), QString(),
      tr("Fxhnn Content Files (*.FXHNNCON)"));
      QFile file(fileName);
      if(!file.open(QIODevice::ReadOnly)){
      QMessageBox::critical(MyFxhnn, tr("Error"), tr("Could not open file"));
      return false;
      }
      QTextStream in(&file);
      in >> itsContent;
      printItsContent();
      file.close();

          if(itsContent != MyFxhnn -> ui -> itsText -> toPlainText()){
              QMessageBox::critical(MyFxhnn, tr("Error"), tr("Fehler beim Öffnen, Data != Textfeld"));
              return false;
          }
      
      
      
      return true;
      

      }@

      Leon

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #11

        From your code, I wouldn't expect openContent to write anything. You open the selected file in ReadOnly mode and you read from it after that.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • L Offline
          L Offline
          leon2225
          wrote on last edited by
          #12

          yea I meant that the function has to "write" the data from the stream into the variable ... but I don't know, where there should be the bug :/

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #13

            Ok, so you mean that "itsContent" doesn't receive the content of the file ?

            Following your code printItsContent just clears the itsText widget content so when you compare the content of itsText to itsContent's value, your test will only succeed if itsContent is empty.

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • L Offline
              L Offline
              leon2225
              wrote on last edited by
              #14

              I've changed that ... a few days ago :D
              I'll post the new code .. :
              data.h
              @#ifndef DATA_H
              #define DATA_H

              #include <QWidget>
              #include "fxhnn.h"
              #include "ui_fxhnn.h"
              #include <cstdlib>
              #include <limits.h>
              #include <QString>
              #include <QFileDialog>
              #include <QFile>
              #include <QMessageBox>
              #include <QTextStream>
              #include <QDataStream>

              class Fxhnn;

              class Data : public QWidget
              {
              Q_OBJECT

              Fxhnn *MyFxhnn;
              

              public:
              explicit Data(Fxhnn*);
              ~Data();

                  //Zugriffe auf den Inhalt
              QString getItsContent();
              void printItsContent();
              void setItsContent( QString newContent);
              void readItsContent();
              void reset();
              
              
                  //Speichern der Daten
              bool saveKeyAndMeta(bool customFileName = 0);
              bool openKeyAndMeta(bool customFileName = 0);
              bool saveContent(bool customFileName = 0);
              bool openContent(bool customFileName = 0);
              bool saveAll(bool customFileName = 0);
              bool openAll(bool customFileName = 0);
              

              signals:

              private:
              qint64 itsKey;
              QString itsContent;
              ushort itsShuffleLevel;
              ushort itsEncryptLevel;
              QString itsKeyFilename;
              QString itsContentFilename;
              };

              #endif // DATA_H
              @

              data.cpp:
              @#include "data.h"

              Data::Data(Fxhnn * pFxhnn) : MyFxhnn(pFxhnn),itsEncryptLevel(0), itsShuffleLevel(0)
              {
              itsKey = rand() % LONG_MAX;
              setItsEncryptLevel(0);
              }

              Data::~Data()
              {

              }

              //Zugriffe auf itsContent
              

              void Data::printItsContent(){
              MyFxhnn -> ui -> itsText->clear();
              MyFxhnn -> ui -> itsText -> setPlainText(itsContent);
              setItsEncryptLevel(0);
              setItsShuffleLevel(0);
              return;
              }

              void Data::setItsContent(QString newContent){
              itsContent = newContent;
              return;
              }

              void Data::readItsContent(){
              itsContent = MyFxhnn -> ui -> itsText -> toPlainText();
              return;
              }

              //Zugriffe auf itsKey
              

              qint64 Data::getItsKey(){
              return itsKey;
              }

              void Data::setItsKey(qint64 newKey){
              itsKey = newKey;
              return;
              }

              void Data::generateItsKey(){
              itsKey = rand() % USHRT_MAX;
              return;
              }

              //Zugriffe auf das Level der Verschlüsslung
              void Data::setItsEncryptLevel( short upDownGrade){
              itsEncryptLevel = itsEncryptLevel + upDownGrade;

              if(itsEncryptLevel <= 0){
                  MyFxhnn -> ui -> itsIsEncrypted -> setText("Decrypted");
                  MyFxhnn -> ui -> itsIsEncrypted -> setStyleSheet("QLabel {color : #CC0304; }");
              }
              else{
                  if(itsEncryptLevel > 0){
                      QString Out = "Encrypt Level ";
                      Out.append(QString("%1").arg(itsEncryptLevel));
                      MyFxhnn -> ui-> itsIsEncrypted-> setText(Out);
                  }
                  else
                      MyFxhnn -> ui -> itsIsEncrypted -> setText("Encrypted");
                  MyFxhnn -> ui -> itsIsEncrypted -> setStyleSheet("QLabel {color : #4ECC39; }");
              }
              

              }

              ushort Data::getItsEncryptLevel(){
              return itsEncryptLevel;
              }

              //Daten Speichern und öffnen
              

              bool Data::saveKeyAndMeta(bool customFileName){
              if(itsKeyFilename.isEmpty() || customFileName)
              itsKeyFilename = QFileDialog::getSaveFileName(MyFxhnn, tr("Schlüssel Speichern"), QString(), tr("Fxhnn Key Files (*.FXHNNKEY)"));
              if(!itsKeyFilename.isEmpty()){
              QFile file(itsKeyFilename);
              if(!file.open(QIODevice::WriteOnly)){
              QMessageBox::critical(0, tr("Error"), tr("Could not save key"));
              return false;
              }
              QDataStream stream(&file);
              stream << itsKey << itsEncryptLevel << itsShuffleLevel;
              file.close();
              }
              return true;
              }

              bool Data::saveContent(bool customFileName){
              if(itsContentFilename.isEmpty() || customFileName)
              itsContentFilename = QFileDialog::getSaveFileName(0, tr("Text Speichern"), QString(), tr("Fxhnn Content Files (*.txt)"));

              if(!itsContentFilename.isEmpty()){
                  QFile file&#40;itsContentFilename&#41;;
                  if(!file.open(QIODevice::WriteOnly)){
                      QMessageBox::critical(0, tr("Error"), tr("Could not save file"));
                      return false;
                  }
                  QTextStream stream(&file);
                  stream << itsContent;
                  file.close();
              }
              return true;
              

              }

              bool Data::saveAll(bool customFileName){
              bool content = saveContent(customFileName);
              bool keyAndMeta = saveKeyAndMeta(customFileName);

              if(content && keyAndMeta)
                  return true;
              
              return false;
              

              }

              bool Data::openKeyAndMeta( bool customFileName){
              if(itsKeyFilename.isEmpty() || customFileName )
              itsKeyFilename = QFileDialog::getOpenFileName(0, tr("Schlüssel Öffnen"), QString(), tr("Fxhnn Key Files (*.FXHNNKEY)"));
              if(!itsKeyFilename.isEmpty()){
              QFile file(itsKeyFilename);
              if(!file.open(QIODevice::ReadOnly)){
              QMessageBox::critical(0, tr("Error"), tr("Could not open file"));
              return false;
              }
              QDataStream in(&file);
              in >> itsKey >> itsEncryptLevel >> itsShuffleLevel;
              file.close();
              printItsContent();
              }
              return true;
              }

              bool Data::openContent(bool customFileName){
              if(itsContentFilename.isEmpty() || customFileName)
              itsContentFilename= QFileDialog::getOpenFileName(MyFxhnn, tr("Inhalt öffnen"), QString(), tr("Fxhnn Content Files (*.txt)"));

              if(!itsContentFilename.isEmpty()){
                  QFile file&#40;itsContentFilename&#41;;
                  if(!file.open(QIODevice::ReadOnly)){
                      QMessageBox::critical(MyFxhnn, tr("Error"), tr("Could not open file"));
                      return false;
                  }
                  QTextStream in(&file);
                  setItsContent(in.readAll());
                  printItsContent();
                  file.close();
              
                  if((itsContent != MyFxhnn -> ui -> itsText -> toPlainText()) || itsContent == ""){
                      QMessageBox::critical(MyFxhnn, tr("Error"), tr("Fehler beim Öffnen, Data != Textfeld"));
                      return false;
                  }
              }
              
              
              return true;
              

              }

              bool Data::openAll(bool customFileName){
              bool content = openContent(customFileName);
              bool keyAndMeta = openKeyAndMeta(customFileName);

              if(content && keyAndMeta)
                  return true;
              
              return false;
              

              }
              @

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              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #15

                So is it working as you expect it to ?

                Interested in AI ? www.idiap.ch
                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                • L Offline
                  L Offline
                  leon2225
                  wrote on last edited by
                  #16

                  No it isn't ... it still have the problem that it couldn't read the data from the files.

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                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #17

                    Rather than
                    @
                    QTextStream in(&file);
                    setItsContent(in.readAll());@

                    Why not just:
                    @
                    setItsContent(file.readAll());
                    @

                    In any case, are you sure that your file is not empty ?

                    Interested in AI ? www.idiap.ch
                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • L Offline
                      L Offline
                      leon2225
                      wrote on last edited by
                      #18

                      That doesn't work... And the file isn't empty

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #19

                        Did you check what file.readAll() contains ?

                        since setItsContent only assign the parameter value to your itsContent member variable why not just do:

                        @itsContent = file.readAll()@

                        ?

                        By the way, you should use const QString& in your setItsContent function, that will avoid unnecessary copies.

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • L Offline
                          L Offline
                          leon2225
                          wrote on last edited by
                          #20

                          Okey ehm file.readAll() return the right content of the file, the problem is, that it doesn't convert it into QString. readAll() gives back a QByteArray wich normaly could be converted in QString with for example:
                          @itsContent = QString(file.readAll());@

                          But it doesn't ...

                          here is the function again:
                          @bool Data::openContent(bool customFileName){
                          if(itsContentFilename.isEmpty() || customFileName)
                          itsContentFilename= QFileDialog::getOpenFileName(MyFxhnn, tr("Inhalt öffnen"), QString(), tr("Fxhnn Content Files (*.txt)"));

                          if(!itsContentFilename.isEmpty()){
                              QFile file&#40;itsContentFilename&#41;;
                              if(!file.open(QIODevice::ReadOnly)){
                                  QMessageBox::critical(MyFxhnn, tr("Error"), tr("Could not open file"));
                                  return false;
                              }
                              QTextStream in(&file);
                              QMessageBox::information(MyFxhnn, "Content of readAll(", file.readAll());
                              itsContent = QString(file.readAll());
                              QMessageBox::information(MyFxhnn, "Content of itsContent", QString(file.readAll()));
                              printItsContent();
                              file.close();
                          
                              if((itsContent != MyFxhnn -> ui -> itsText -> toPlainText()) || itsContent == ""){
                                  QMessageBox::critical(MyFxhnn, tr("Error"), tr("Fehler beim Öffnen, Data != Textfeld"));
                                  return false;
                              }
                          }
                          
                          
                          return true;
                          

                          }@

                          The Message "Content of readAll()" gives back the right content the other message return nothing an the last error message appears.

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                          • L Offline
                            L Offline
                            leon2225
                            wrote on last edited by
                            #21

                            Now it's working a 'bit'.
                            It is able to read the file and print it into the output, BUT it doesn't save onicode ... and I need unicode so we have to find an other solution :/ :D

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                            • L Offline
                              L Offline
                              leon2225
                              wrote on last edited by
                              #22

                              Now it's working a 'bit'.
                              It is able to read the file and print it into the output, BUT it doesn't save onicode ... and I need unicode so we have to find an other solution :/ :D
                              @bool Data::openContent(bool customFileName){
                              if(itsContentFilename.isEmpty() || customFileName)
                              itsContentFilename= QFileDialog::getOpenFileName(MyFxhnn, tr("Inhalt öffnen"), QString(), tr("Fxhnn Content Files (*.txt)"));

                              if(!itsContentFilename.isEmpty()){
                                  QFile file&#40;itsContentFilename&#41;;
                                  if(!file.open(QIODevice::ReadOnly)){
                                      QMessageBox::critical(MyFxhnn, tr("Error"), tr("Could not open file"));
                                      return false;
                                  }
                                  //QTextStream in(&file);
                                  //QMessageBox::information(MyFxhnn, "Inhalt von readAll()", file.readAll());
                                  QByteArray tempString = file.readAll();
                                  itsContent = tempString;
                                  QMessageBox::information(MyFxhnn, "Inhalt von itsContent", itsContent);
                                  printItsContent();
                                  file.close();
                              
                                  if((itsContent != MyFxhnn -> ui -> itsText -> toPlainText()) || itsContent == ""){
                                      QMessageBox::critical(MyFxhnn, tr("Error"), tr("Fehler beim Öffnen, Data != Textfeld"));
                                      return false;
                                  }
                              }
                              
                              
                              return true;
                              

                              }@

                              and here are the printItsContent():
                              @void Data::printItsContent(){
                              //MyFxhnn -> ui -> itsText->clear(); <- If I uncomment this line it clear the output text, but it can't set it again
                              MyFxhnn -> ui -> itsText -> setPlainText(itsContent);
                              setItsEncryptLevel(0);
                              setItsShuffleLevel(0);
                              return;
                              }@

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                              • SGaistS Offline
                                SGaistS Offline
                                SGaist
                                Lifetime Qt Champion
                                wrote on last edited by
                                #23

                                That's the kind of detail that's good to share.

                                Then it seems that you should use QTextCodec

                                Interested in AI ? www.idiap.ch
                                Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                • L Offline
                                  L Offline
                                  leon2225
                                  wrote on last edited by
                                  #24

                                  OK!
                                  now it works, but only with textstream, but that's enough.

                                  Thank you!! :)

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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #25

                                    What do you mean by "only with textstream" ?

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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