anagramx.cpp

   1 /**********************************************************************
   2  * Title: Anagram
   3  * Description: Application for finding anagrams of a word
   4  * Author: Agnibho Mondal
   5  * Website: http://code.agnibho.com/anagram
   6  **********************************************************************
   7    Copyright (c) 2013-2015 Agnibho Mondal
   8    All rights reserved
   9  **********************************************************************
  10    This file is part of Anagram.
  11
  12    Anagram is free software: you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation, either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    Anagram is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with Anagram.  If not, see <http://www.gnu.org/licenses/>.
  24  **********************************************************************/
  25 /*
  26  * The Graphical User Interface for Anagram
  27  */
  28
  29 #include <string> //For string
  30 #include <vector> //For string vector
  31 #include <algorithm> //For find
  32
  33 //For Qt Objects
  34 #include <QApplication>
  35 #include <QWidget>
  36 #include <QLabel>
  37 #include <QFont>
  38 #include <QLineEdit>
  39 #include <QPushButton>
  40 #include <QCheckBox>
  41 #include <QTextEdit>
  42 #include <QScrollArea>
  43 #include <QGridLayout>
  44 #include <QMessageBox>
  45
  46 #include "validity.hpp" //For is_valid
  47 #include "find.hpp" //To find anagrams
  48
  49 using namespace std;
  50
  51 //Defines the AnagramX class
  52 class AnagramX : public QWidget{
  53 public:
  54   AnagramX(QWidget *parent=0);
  55 private slots:
  56   void findAnagrams(); //Launches the finder thread
  57   void showOutput(); //Displays the output
  58   void clearAll(); //Clears the text entry and output
  59   void showAbout(); //Shows an About messagebox
  60 private:
  61   QLineEdit *entry; //Text input
  62   QCheckBox *multi; //Multi-word checkbox
  63   QTextEdit *result; //Program output
  64 };
  65
  66 //Implements the AnagramX class
  67 AnagramX::AnagramX(QWidget *parent)
  68   :QWidget(parent){
  69
  70   QLabel *label = new QLabel("Anagram Finder", this); //The top label with formatted and centered text
  71   label->setFont(QFont("FreeSerif", 20));
  72   label->setAlignment(Qt::AlignCenter);
  73
  74   entry = new QLineEdit(this); //The text input line
  75   connect(entry, &QLineEdit::returnPressed, this, &AnagramX::findAnagrams);
  76
  77   QPushButton *find = new QPushButton("Find", this); //Button to trigger anagram search
  78   find->setAutoDefault(true);
  79   connect(find, &QPushButton::clicked, this, &AnagramX::findAnagrams);
  80
  81   QPushButton *clear = new QPushButton("Clear", this); //Button to clear input and output
  82   clear->setAutoDefault(true);
  83   connect(clear, &QPushButton::clicked, this, &AnagramX::clearAll);
  84
  85   QPushButton *about = new QPushButton("About", this); //Button to show an About message box
  86   about->setAutoDefault(true);
  87   connect(about, &QPushButton::clicked, this, &AnagramX::showAbout);
  88
  89   multi = new QCheckBox("Allow multiple words", this); //The multi-word checkbox
  90
  91   result = new QTextEdit(this); //The anagram output area
  92   result->setReadOnly(true);
  93
  94   QScrollArea *scroll = new QScrollArea(this); //Wraps the output in a scrollable area
  95   scroll->setWidget(result);
  96   scroll->setWidgetResizable(true);
  97
  98   QGridLayout *grid = new QGridLayout(this); //Organizes the other widgets in a grid
  99   grid->addWidget(label, 0, 0, 1, 3);
 100   grid->addWidget(entry, 1, 0, 1, 3);
 101   grid->addWidget(find, 2, 0, 1, 1);
 102   grid->addWidget(clear, 2, 1, 1, 1);
 103   grid->addWidget(about, 2, 2, 1, 1);
 104   grid->addWidget(multi, 3, 0, 1, 3);
 105   grid->addWidget(scroll, 4, 0, 1, 3);
 106 }
 107
 108 //Finds the anagrams and launches the anagram finder thread
 109 void AnagramX::findAnagrams(){
 110   //Define variables
 111   bool flag; //Holds multi-word checkbox state
 112   string word; //Holds the word
 113   word=AnagramX::entry->text().toStdString(); //Collects the input
 114   flag=AnagramX::multi->isChecked(); //Checks if multi-word allowed
 115   vector<string> anagram_list; //Recieves the found anagrams
 116   string plain_list=""; //Anagrams in a plain string form
 117   if(is_valid(word, flag)){ //If the input is valid find anagrams
 118     if(flag){
 119       anagram_list=find_anagram_multiword(word); //Thread to find the multi-word anagrams of the word
 120     }
 121     else{
 122       anagram_list=find_anagram(word); //Thread to find the single-word anagrams of the word
 123     }
 124     if(!anagram_list.empty()){ //If anagram_list is NOT empty
 125       { //Remove the word itself from the anagram list if present
 126         vector<string>::iterator i=std::find(anagram_list.begin(), anagram_list.end(), word);
 127         if(i!=anagram_list.end()){
 128           anagram_list.erase(i);
 129         }
 130         else{
 131           plain_list+=word+": The word is not present in the dictionary\n";
 132         }
 133       }
 134     }
 135     //Display Output
 136     if(anagram_list.size()>1){ //Initializes plain_list with plural
 137       plain_list+=word+": The following "+to_string(anagram_list.size())+" anagrams were found\n\n";
 138     }
 139     else if(anagram_list.size()>0){ //Initializes plain_list with singular
 140       plain_list+=word+": The following anagram was found\n\n";
 141     }
 142     else{ //No anagram found
 143       plain_list+=word+": No anagram was found\n";
 144     }
 145     for(string i : anagram_list){ //Converts the vector to newline separated strings
 146       plain_list+=i+"\n";
 147     }
 148     AnagramX::result->setText(QString::fromStdString(plain_list)); //Outputs the anagram strings
 149   }
 150   else{ //If input invalid show error
 151     QMessageBox::warning(this, "Error", "The entered word is not valid");
 152     return;
 153   }
 154 }
 155
 156 //Clears input and output
 157 void AnagramX::clearAll(){
 158   AnagramX::entry->setText("");
 159   AnagramX::result->setText("");
 160 }
 161
 162 //Shows an About message
 163 void AnagramX::showAbout(){
 164   QMessageBox::information(this, "About", "<h1>Anagram 2.0</h1>"
 165                            "<p>Copyright &copy; 2013-2015 Agnibho Mondal</p>"
 166                            "<a href='http://code.agnibho.com/anagram'>http://code.agnibho.com/anagram</a>");
 167 }
 168
 169
 170 //Start execution
 171 int main(int argc, char *argv[]){
 172
 173   QApplication app(argc, argv); //Qt Application object
 174   AnagramX window; //Instance of AnagramX, creates the main window
 175
 176   window.resize(450, 450); //Set window size
 177   window.setWindowTitle("Anagram"); //Set window title
 178   window.show(); //Displays the window
 179
 180   return app.exec(); //Enters the main execution loop
 181 }