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How to include .txt on Qt

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  • K Offline
    K Offline
    KzR69100
    wrote on 17 Nov 2016, 12:02 last edited by
    #6

    it depends, but at the end i will have only 40 - 50 squares with just one color in them.

    So what i want is that Qt replace a color by a picture, ( so i will have 40 - 50 pictures ) and a total price (like 100 dollars)

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    • L Offline
      L Offline
      LuGRU
      wrote on 17 Nov 2016, 12:15 last edited by
      #7

      @KzR69100
      My 2 cents :)

      I would go with custom class / structure and serialization. That way there is no need for any kind of database / parsing (per say).
      Also id squares not by color, because after fill You will loose that color, but by some sort of id and keep it's rectangle.

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      • B Offline
        B Offline
        Buckwheat
        wrote on 17 Nov 2016, 12:28 last edited by
        #8

        @KzR69100 ... @LuGRU gives good advice. But, if you use an ID then your database idea would work as you could make the ID the table entry ID.

        The only recommendation I have is to look at what you are trying to solve. What is the future of what you are trying to solve. Then, pick the appropriate solution. I have seen too many times solutions that don't fit the problem to solve because of a "cool tool" or package someone just had to use.

        Dave Fileccia

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        • K Offline
          K Offline
          KzR69100
          wrote on 17 Nov 2016, 12:49 last edited by KzR69100
          #9

          I have a function who return me a color (QColor function)

          QColor Color(...){
          
          return color;
          }
          

          like that, and i thought that after the "return color" i will have a "if color == red, add 6 dollars, and replace it by a picture"

          the problem is that i will have to do this with many colors so it will take a lot of place in my code, thats why i thought use a database that i will include in my Qt who contained a sort of "x = add 6 dollars, and replace it by a picture"

          so i will just have to do :

          if color == red, red = x ;

          is this possible ?

          1 Reply Last reply
          0
          • S SGaist
            17 Nov 2016, 07:55

            What kind of picture do you have in mind ? What size ?

            @darius Please don't highjack other's people thread with unrelated questions.

            When you create a new topic you have line edit which contains "Enter your topic title here..."
            If you want to edit late use the three doted menu on the far right and you'll have your topic title editable at the same place.

            D Offline
            D Offline
            darius
            wrote on 17 Nov 2016, 22:00 last edited by
            #10

            @SGaist said in How to include .txt on QT:

            When you create a new topic you have line edit which contains "Enter your topic title here..."

            When I was trying to create a new topic for the last 3 days, forum.qt.io opened in Firefox (latest version) for Windows with oversized font header and blue header frame was made of two lines.
            Topic input frame was lost due to the bug in html code.

            In the meantime I have notified Qt about the bug and today Input box for topic title is back.
            There is another bug in html code visible in Firefox, since there is no send/post button
            I assume, an arrow in upper right corner should replace this button (not easy or user-friendly solution)

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            • S Offline
              S Offline
              SGaist
              Lifetime Qt Champion
              wrote on 17 Nov 2016, 22:04 last edited by
              #11

              @darius Can't reproduce that on Firefox on macOS, the Submit combo is sitting there on the far right.

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

              D 1 Reply Last reply 17 Nov 2016, 22:20
              0
              • S SGaist
                17 Nov 2016, 22:04

                @darius Can't reproduce that on Firefox on macOS, the Submit combo is sitting there on the far right.

                D Offline
                D Offline
                darius
                wrote on 17 Nov 2016, 22:20 last edited by
                #12

                @SGaist thank you. I use upper right arrow on blue background to send this reply.
                Thank you for your time.

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                • K Offline
                  K Offline
                  KzR69100
                  wrote on 18 Nov 2016, 13:19 last edited by
                  #13

                  And for my problem ? :p

                  M 1 Reply Last reply 18 Nov 2016, 15:44
                  1
                  • K KzR69100
                    18 Nov 2016, 13:19

                    And for my problem ? :p

                    M Offline
                    M Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on 18 Nov 2016, 15:44 last edited by mrjj
                    #14

                    @KzR69100

                    So what u want is

                    RGB value, ImageName, Cost

                    So for a given RGB value, u want to look up ImageName, and Cost?

                    How many of those looks up will you need?
                    If only 10 or 15 , then a DB might be a bit overkill.

                    Do you need it to be dynamic or could it be 100% predefined?

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                    • K Offline
                      K Offline
                      KzR69100
                      wrote on 18 Nov 2016, 18:32 last edited by
                      #15

                      """"So for a given RGB value, u want to look up ImageName, and Cost?"""

                      Yes exactly,

                      i got 10 pictures who got 1 colors and 5 - 6 pictures who got 2 colors (if 2 squares beside equal got the same color as the picture who got 2 colors, so i will do 2 square = 1 picture)

                      but the principal is the 10 picture who got 1 color.

                      It will be all predefined no dynamic

                      M 1 Reply Last reply 18 Nov 2016, 20:58
                      0
                      • S Offline
                        S Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on 18 Nov 2016, 20:57 last edited by
                        #16

                        Which size should these picture be ?

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

                        1 Reply Last reply
                        2
                        • K KzR69100
                          18 Nov 2016, 18:32

                          """"So for a given RGB value, u want to look up ImageName, and Cost?"""

                          Yes exactly,

                          i got 10 pictures who got 1 colors and 5 - 6 pictures who got 2 colors (if 2 squares beside equal got the same color as the picture who got 2 colors, so i will do 2 square = 1 picture)

                          but the principal is the 10 picture who got 1 color.

                          It will be all predefined no dynamic

                          M Offline
                          M Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on 18 Nov 2016, 20:58 last edited by
                          #17

                          @KzR69100
                          Hi
                          You can make such small number very compact in code.
                          Add the images to a qres file and store name as :/imagename and
                          you can get a pixmap directly from it. ( as in Pixmap p(":/img");
                          Sample code. very basic but could be enough for your case.

                          struct CostInfo {
                            QString ImageName;
                            int Cost;
                          };
                          
                          QMap<QRgb, CostInfo > Costs = {
                            { QColor(255, 0, 120).rgb(), { ":/imageinres", 10 }},
                            { QColor(110, 255, 110).rgb(), { "xxxx", 20 }},
                            { QColor(120, 255, 20).rgb(), { "xxxx", 30 }},
                            { QColor(130, 255, 90).rgb(), { "xxxx", 40 }},
                            { QColor(140, 255, 10).rgb(), { "xxxx", 50 }},
                            { QColor(100, 100, 100).rgb(), { "MEEEE", 60 }},
                            { QColor(110, 255, 40).rgb(), { "xxxx", 70 }},
                            { QColor(210, 255, 50).rgb(), { "xxxx", 80 }},
                            { QColor(30, 255, 60).rgb(), { "xxxx", 3310 }},
                            { QColor(20, 255, 70).rgb(), { "xxxx", 4410 }},
                            { QColor(40, 255, 80).rgb(), { "xxx", 150 }},
                            { QColor(50, 255, 90).rgb(), { "xxx", 160 }}
                          };
                          
                          
                          void Test() {
                            QColor col = QColor(100, 100, 100); // getColor()..
                            if (Costs.contains( col.rgb() )) {
                              CostInfo& ci = Costs[col.rgb()];
                              qDebug() << "found:" << "cost:" << ci.Cost << "img:" << ci.ImageName;
                            }
                          }
                          
                          

                          Running test() gives
                          found: cost: 60 img: "MEEEE"

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                          • K Offline
                            K Offline
                            KzR69100
                            wrote on 19 Nov 2016, 12:47 last edited by
                            #18

                            @SGaist i don't know it depends as i said, but in all case i think it will contain like 50 squares.

                            @mrjj Thanks for your help.
                            I don't understand the " QMap<QRgb, CostInfo > Costs "

                            and my problem i think, it's if i got a QColor(105,4,85) there will be a problem because it will not found a QColor who corresponds.

                            So i thought use a "for" to take a value range, and have all possible color, that's correct ?

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                            0
                            • M Offline
                              M Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on 19 Nov 2016, 19:45 last edited by
                              #19
                              • I don't understand the " QMap<QRgb, CostInfo > Costs "
                                Its a associative list. Using QRgb ( the color ) as key and it returns a Costs struct that is the
                                data associated with that key.
                                Read about it here
                                http://doc.qt.io/qt-5/qmap.html
                                Its a lookup list so to speak.

                              • and my problem i think, it's if i got a QColor(105,4,85) there will be a problem because it will not found a QColor who corresponds.

                              Well if not in list, { QColor(105,4,85).rgb(), { "xxxx", 50 }},
                              then nothing happens as you test with
                              if (Costs.contains( col.rgb() )) { << test if found
                              xxxonly do if foundxxx

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                              • K Offline
                                K Offline
                                KzR69100
                                wrote on 19 Nov 2016, 19:56 last edited by
                                #20

                                @mrjj
                                So if nothing happens that's bad :p

                                What do you think about use a "for" ?

                                Like i don't care if it's a dark red, or a simple red etc..

                                My question is :

                                If nothing if found, how function can i use to find the "closer" color to the define color in my struct ?

                                thanks

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                                • M Offline
                                  M Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on 19 Nov 2016, 20:21 last edited by mrjj
                                  #21
                                  • If nothing if found, how function can i use to find the "closer" color to the define color in my struct ?

                                  Hi
                                  use the QMapIterator instead of "for"

                                  QMapIterator<QString, int> i(map);
                                  while (i.hasNext()) {
                                  i.next();
                                  cout << i.key() << ": " << i.value() << endl;
                                  }
                                  http://doc.qt.io/qt-5/qmap.html#details

                                  That allows you to go over all and get the keys. (i.key())
                                  QColor TheColor(i.key())
                                  Then you can calculate if the RGB values for TheColor is
                                  close enough for you to accept it.
                                  For inspiration see here
                                  http://stackoverflow.com/questions/9018016/how-to-compare-two-colors

                                  int diffRed   = Math.abs(c1.getRed()   - c2.getRed());
                                  int diffGreen = Math.abs(c1.getGreen() - c2.getGreen());
                                  int diffBlue  = Math.abs(c1.getBlue()  - c2.getBlue());
                                  Those values you can just divide by the amount of difference saturations (255), and you will get the difference between the two.
                                  
                                  float pctDiffRed   = (float)diffRed   / 255;
                                  float pctDiffGreen = (float)diffGreen / 255;
                                  float pctDiffBlue   = (float)diffBlue  / 255;
                                  After which you can just find the average color difference in percentage.
                                  
                                  (pctDiffRed + pctDiffGreen + pctDiffBlue) / 3 * 100
                                  
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                                  • K Offline
                                    K Offline
                                    KzR69100
                                    wrote on 19 Nov 2016, 20:42 last edited by KzR69100
                                    #22

                                    That is very complicated.

                                    QMap is a kind of database, a dictionary that is right ?

                                    I will try with you'r first code :

                                    I don't understand the function void Test.

                                    I got a function who return me a color in QRGB, it named "color" can i say just :

                                    If (color == (the color in the Qmap (i dont know how to call it))){
                                    cost = 50;
                                    image = (red image)
                                    }
                                    ?

                                    The problem is that i understand QMap, but i don't know how to use it and i'm new to programmation

                                    M 1 Reply Last reply 19 Nov 2016, 20:53
                                    0
                                    • K KzR69100
                                      19 Nov 2016, 20:42

                                      That is very complicated.

                                      QMap is a kind of database, a dictionary that is right ?

                                      I will try with you'r first code :

                                      I don't understand the function void Test.

                                      I got a function who return me a color in QRGB, it named "color" can i say just :

                                      If (color == (the color in the Qmap (i dont know how to call it))){
                                      cost = 50;
                                      image = (red image)
                                      }
                                      ?

                                      The problem is that i understand QMap, but i don't know how to use it and i'm new to programmation

                                      M Offline
                                      M Offline
                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on 19 Nov 2016, 20:53 last edited by mrjj
                                      #23

                                      @KzR69100 said in How to include .txt on Qt:

                                      • That is very complicated.
                                        Ok, its plain c++ and maps are often used. I didnt mean to make it
                                        complicated. Using say a DataBase would be 10 times the code.

                                      QMap is a kind of database, a dictionary that is right ?
                                      Yes. You tell it ( whatkey, whatvalue)
                                      and then u can ask for it to return the value for a key.
                                      In this sample we used a color as key.

                                      I don't understand the function void Test.

                                      void Test() {
                                        // this is the color to look for
                                        QColor col = QColor(100, 100, 100); // getColor()..
                                       // check the map if it has the color ( suing contains)
                                        if (Costs.contains( col.rgb() )) {
                                          CostInfo& ci = Costs[col.rgb()]; // take the struct from list
                                          qDebug() << "found:" << "cost:" << ci.Cost << "img:" << ci.ImageName;
                                        }
                                      }
                                      
                                      > 
                                      > I got a function who return me a color in QRGB, it named "color" can i say just :
                                      > If (color == (the color in the Qmap (i dont know how to call it))){
                                      You cannot use == you must use Contains function.
                                      if (Costs.contains( color.rgb() )   ) {
                                          CostInfo& ci = Costs[color.rgb()]; // take the struct from list
                                         QColor TheColor(i.key()); // this is the base color
                                         int Cost=ci.Cost; // use the values.
                                        }
                                      
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                                      • K Offline
                                        K Offline
                                        KzR69100
                                        wrote on 19 Nov 2016, 21:41 last edited by KzR69100
                                        #24
                                        void Test() {
                                          // this is the color to look for
                                          QColor col = QColor(100, 100, 100); // getColor()..
                                         // check the map if it has the color ( suing contains)
                                          if (Costs.contains( col.rgb() )) {
                                            CostInfo& ci = Costs[col.rgb()]; // take the struct from list
                                            qDebug() << "found:" << "cost:" << ci.Cost << "img:" << ci.ImageName;
                                          }
                                        }
                                        

                                        So the QColor col is my returned color that is right ?

                                        i don't understand the "CostInfo& ci"

                                        And do the size of the picture in the Qmap have to be resized?

                                        PS :
                                        my function is :

                                        for(int x = topLeft.x(); x < maxX; ++x) {
                                        		for(int y = topLeft.y(); y < maxY; ++y) {
                                        			image.setPixelColor(x, y, colour);
                                                                                      if (Costs.contains( colour.rgb() )) {          // it will be that ?
                                                                                           CostInfo& ci = Costs[colour.rgb()];
                                        		}
                                        	}
                                        }
                                        

                                        to have all RGB in my struct can i use a "for" (sorry to always say "can i use a for") but the problem is that i want all RGB value with my 15 - 20 pictures

                                        M 1 Reply Last reply 20 Nov 2016, 07:42
                                        0
                                        • K KzR69100
                                          19 Nov 2016, 21:41
                                          void Test() {
                                            // this is the color to look for
                                            QColor col = QColor(100, 100, 100); // getColor()..
                                           // check the map if it has the color ( suing contains)
                                            if (Costs.contains( col.rgb() )) {
                                              CostInfo& ci = Costs[col.rgb()]; // take the struct from list
                                              qDebug() << "found:" << "cost:" << ci.Cost << "img:" << ci.ImageName;
                                            }
                                          }
                                          

                                          So the QColor col is my returned color that is right ?

                                          i don't understand the "CostInfo& ci"

                                          And do the size of the picture in the Qmap have to be resized?

                                          PS :
                                          my function is :

                                          for(int x = topLeft.x(); x < maxX; ++x) {
                                          		for(int y = topLeft.y(); y < maxY; ++y) {
                                          			image.setPixelColor(x, y, colour);
                                                                                        if (Costs.contains( colour.rgb() )) {          // it will be that ?
                                                                                             CostInfo& ci = Costs[colour.rgb()];
                                          		}
                                          	}
                                          }
                                          

                                          to have all RGB in my struct can i use a "for" (sorry to always say "can i use a for") but the problem is that i want all RGB value with my 15 - 20 pictures

                                          M Offline
                                          M Offline
                                          mrjj
                                          Lifetime Qt Champion
                                          wrote on 20 Nov 2016, 07:42 last edited by mrjj
                                          #25

                                          @KzR69100

                                          • So the QColor col is my returned color that is right ?
                                            Yes, the Color to look for.

                                          • i don't understand the "CostInfo& ci"

                                          It means a reference to a CostInfo.
                                          We ask the map to return the CostInfo for the key and instead of
                                          having it as a copy we actually point to the one in the list.
                                          so if you do

                                          ci.Cost = 100; you would update the one in the list.

                                          if we did
                                          CostInfo ci = Costs[col.rgb()];
                                          It would make a copy and ci would be a copy and not point to one in the list.

                                          So if it was integers and a normal list.
                                          int a= List[1]; // copy
                                          int &a = List[1]; // a points to the int in index [1]

                                          • And do the size of the picture in the Qmap have to be resized?

                                          The qmap only store the file names of the images
                                          I assume you are adding the images to a QRes file
                                          http://www.bogotobogo.com/Qt/Qt5_Resource_Files.php
                                          So all images are build into the program
                                          and then load them with ":/" syntax.
                                          That would be easy and fast.
                                          http://doc.qt.io/qt-5/resources.html

                                          
                                          for(int x = topLeft.x(); x < maxX; ++x) {
                                          		for(int y = topLeft.y(); y < maxY; ++y) {
                                          			image.setPixelColor(x, y, colour);
                                                                                        if (Costs.contains( colour.rgb() )) {          // it will be that ?  YES
                                                                                             CostInfo& ci = Costs[colour.rgb()];
                                                                                               int Cost = ci.Cost;
                                                                                                Pixmap pix( ci.ImageName ); 
                                          		}  
                                          	}
                                          }
                                          

                                          to have all RGB in my struct can i use a "for" (sorry to always say "can i use a for") but the problem is that i want all RGB value with my 15 - 20 pictures

                                          Not sure what you are asking here :)
                                          Are you asking how to use a FOR with the QMAP `?
                                          u can do

                                          
                                          QMapIterator<QRgb, CostInfo >i(Costs);
                                          while (i.hasNext()) {
                                              i.next();
                                              cout << i.key() << ": " << i.value().Cost << endl;
                                          }
                                          

                                          Pleases read
                                          http://doc.qt.io/qt-5/qmap.html

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