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How to include .txt on Qt

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  • P Offline
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    Payx
    wrote on 1 Jan 2017, 13:28 last edited by
    #110

    ok but i have an other question,

    in my QMap, i defined my picture "fraise.png" as a QString ImageName;

    so when i write

    QPixmap pix( ci.ImageName );
    

    it will create a Pixmap from my image ?

    M 1 Reply Last reply 1 Jan 2017, 13:36
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    • P Payx
      1 Jan 2017, 13:28

      ok but i have an other question,

      in my QMap, i defined my picture "fraise.png" as a QString ImageName;

      so when i write

      QPixmap pix( ci.ImageName );
      

      it will create a Pixmap from my image ?

      M Offline
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      mrjj
      Lifetime Qt Champion
      wrote on 1 Jan 2017, 13:36 last edited by mrjj 1 Jan 2017, 13:37
      #111

      @Payx
      yes that will create a pixmap if the path to image is valid.

      QPixmap pix( ci.ImageName );

      BUT
      you seems to store as e "fraise.png" ?
      That wont work as there is no path so it cant find it.

      However if you embed the images via qres file
      then the syntax ":/"
      will allow to load them.
      ":/fraise.png"

      http://doc.qt.io/qt-5/resources.html
      These images are then embedded into the .exe file and can be loaded with ":/" in front.

      If you want to use external files, you must think of how to handle the paths.

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        Payx
        wrote on 1 Jan 2017, 13:50 last edited by mrjj 1 Jan 2017, 13:55
        #112

        mrjj: SORRY i edited your post!. browser lag. cannot undo
        Im very sorry.

        • Yes i have already do that u explained to me before ^^
          Oh. sorry. Well now we know its working :)
          seems good. Note its single ":/" not "://"

        and i dont understand the "Give pix to painter"

        When you construct the painter you give it the widget normally
        QPainter painter(this); <<< "this" being the widget pointer
        but when we paint on image then we give pixmap instead of "this"
        QPainter painter(&pix); // pix is pixmap and not widget
        So basically we tell painter to draw on this picmap and not on a widget.

        M 1 Reply Last reply 1 Jan 2017, 13:58
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        • P Payx
          1 Jan 2017, 13:50

          mrjj: SORRY i edited your post!. browser lag. cannot undo
          Im very sorry.

          • Yes i have already do that u explained to me before ^^
            Oh. sorry. Well now we know its working :)
            seems good. Note its single ":/" not "://"

          and i dont understand the "Give pix to painter"

          When you construct the painter you give it the widget normally
          QPainter painter(this); <<< "this" being the widget pointer
          but when we paint on image then we give pixmap instead of "this"
          QPainter painter(&pix); // pix is pixmap and not widget
          So basically we tell painter to draw on this picmap and not on a widget.

          M Offline
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          mrjj
          Lifetime Qt Champion
          wrote on 1 Jan 2017, 13:58 last edited by mrjj 1 Jan 2017, 14:02
          #113

          @Payx
          So you last issue is the painting of the little image.

          Since we are not allowed to paint inside Remplissage, you have 2 options.

          Do this in paintEvent. ( meaning call Remplissage )
          or
          let Remplissage paint on a new pixmap and then later paint this new pix in
          the real paintEvent function.

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            Payx
            wrote on 1 Jan 2017, 14:06 last edited by
            #114

            What is the simpliest method ? ahah

            M 1 Reply Last reply 1 Jan 2017, 14:09
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            • P Payx
              1 Jan 2017, 14:06

              What is the simpliest method ? ahah

              M Offline
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              mrjj
              Lifetime Qt Champion
              wrote on 1 Jan 2017, 14:09 last edited by
              #115

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

              What is the simpliest method ? ahah

              I think to paint on image as you can then later just
              show in QLabel and might not even need to make a PaintEvent.
              This new image should be the size of the red rect one where u scan for colors.
              so you will draw the mini images on this new picmap and then its the final pixmap i assume.

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                Payx
                wrote on 1 Jan 2017, 14:17 last edited by
                #116

                so on my rectangle i create a label and i display the pixmap in the label ?

                M 1 Reply Last reply 1 Jan 2017, 14:22
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                • P Payx
                  1 Jan 2017, 14:17

                  so on my rectangle i create a label and i display the pixmap in the label ?

                  M Offline
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                  mrjj
                  Lifetime Qt Champion
                  wrote on 1 Jan 2017, 14:22 last edited by
                  #117

                  @Payx
                  I dont know what rectangle is.
                  the QLabel should/could be placed on UI and after you created the final image and OUTSIDE
                  of any loops
                  you can do
                  ui->Label->setPix thing.

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                    Payx
                    wrote on 1 Jan 2017, 14:46 last edited by
                    #118

                    so in this loop

                      for(int x = topLeft.x(); x < maxX; ++x) {
                        for(int y = topLeft.y(); y < maxY; ++y) {
                    

                    i can include

                    QLabel *label = new QLabel(this);
                          foreach( QRgb key, Costs.keys() ) {
                            QColor BaseColor( key );
                            if (Costs.contains( colour.rgb() ) || IsCloseColor(BaseColor, colour) )  {
                              CostInfo& ci = Costs[colour.rgb()];
                    //          int Cost = ci.Cost;
                              QPixmap pix( ci.ImageName );
                    					QPixmap scaledPix = pix.scaled(   8, 8,
                    																				 Qt::KeepAspectRatio,
                    																				 Qt::SmoothTransformation
                    																				 );
                    
                    ui->label->setPixmap(pix);
                    

                    ?

                    M 1 Reply Last reply 1 Jan 2017, 14:49
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                    • P Payx
                      1 Jan 2017, 14:46

                      so in this loop

                        for(int x = topLeft.x(); x < maxX; ++x) {
                          for(int y = topLeft.y(); y < maxY; ++y) {
                      

                      i can include

                      QLabel *label = new QLabel(this);
                            foreach( QRgb key, Costs.keys() ) {
                              QColor BaseColor( key );
                              if (Costs.contains( colour.rgb() ) || IsCloseColor(BaseColor, colour) )  {
                                CostInfo& ci = Costs[colour.rgb()];
                      //          int Cost = ci.Cost;
                                QPixmap pix( ci.ImageName );
                      					QPixmap scaledPix = pix.scaled(   8, 8,
                      																				 Qt::KeepAspectRatio,
                      																				 Qt::SmoothTransformation
                      																				 );
                      
                      ui->label->setPixmap(pix);
                      

                      ?

                      M Offline
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                      mrjj
                      Lifetime Qt Champion
                      wrote on 1 Jan 2017, 14:49 last edited by
                      #119

                      @Payx
                      yes something like that.
                      if pix is the FINISHED result. seems not.

                      That code would just show the original one?

                      and why new the qlabel? Why not just add to UI file with designer?

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                        Payx
                        wrote on 1 Jan 2017, 15:36 last edited by
                        #120

                        Because it will not return only one picture, if my picture is 540540 and my rectangle is 88 i cannot just add a label to display 70 picture.

                        at the end it will have http://www.hostingpics.net/viewer.php?id=354728program.png

                        by replacing all the rectangle by a picture, it depends the color of the rectangle

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                        • P Payx
                          1 Jan 2017, 12:00

                          @ambershark Lol

                          I prefer learn instead of just don't understand what i'm doing, i know i'm very bad to programmation by now but maybe in few years i'il be like mrjj haha !

                          for the QPoint, i use it here :

                          void MainWindow::on_push2_clicked()
                          {
                          
                          
                          	for (int i=0;i<pixi.width();i+=z){
                          						 for (int j=0;j<pixi.height();j+=z){
                          							 k=k+0.06;
                          							Remplissage(pixi,QPoint(i,j),QSize(z,z),Couleurdominante(pixi,QPoint(i,j),QSize(z,z)));
                          
                          		}
                          	}
                          
                          

                          but i use the QPixmap scaledPix .....
                          in my function

                          void Remplissage(QImage& image, const QPoint& topLeft, const QSize& rectangle, const QColor& colour) {
                          

                          so it tell that j and i was not declared in this scope

                          so i declared i and j in my .h

                          #ifndef MAINWINDOW_H
                          #define MAINWINDOW_H
                          
                          #include <QMainWindow>
                          #include <QPixmap>
                          #include <QPoint>
                          #include <QSize>
                          #include <iostream>
                          #include <QMapIterator>
                          #include <QMap>
                          
                          namespace Ui {
                          class MainWindow;
                          }
                          
                          struct CostInfo {
                            QString ImageName;
                            int     Cost;
                          };
                          
                          int j;
                          int i;
                          
                          class MainWindow : public QMainWindow {
                            Q_OBJECT
                          
                           public:
                            explicit MainWindow(QWidget* parent = 0);
                          
                            ~MainWindow();
                          
                           private slots:
                            void on_push_clicked();
                            void on_push2_clicked();
                            void on_verticalSlider_sliderMoved(int position);
                          
                           private:
                            Ui::MainWindow* ui;
                            QImage pixi;
                            QPixmap pixa;
                            float k;
                            int a;
                          
                          
                            int z = 1;
                            int b;
                          };
                          
                          #endif // MAINWINDOW_HH
                          
                          

                          it will work?

                          //

                          it tell that painter was not declared too, so i search to the QPainter class,

                          it's "void QPainter::drawPixmap(const QPoint & point, const QPixmap & pixmap)" that i should use ?

                          A Offline
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                          ambershark
                          wrote on 2 Jan 2017, 00:49 last edited by
                          #121

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

                          @ambershark Lol

                          I prefer learn instead of just don't understand what i'm doing, i know i'm very bad to programmation by now but maybe in few years i'il be like mrjj haha !

                          Haha it's good that you are learning instead of asking for it done like a lot of people on these forums. And hey we all started out bad, don't worry you'll be good in no time if you stick with it. ;)

                          I was just quite impressed with the number of posts in this topic.

                          My L-GPL'd C++ Logger github.com/ambershark-mike/sharklog

                          P 1 Reply Last reply 2 Jan 2017, 14:09
                          0
                          • A ambershark
                            2 Jan 2017, 00:49

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

                            @ambershark Lol

                            I prefer learn instead of just don't understand what i'm doing, i know i'm very bad to programmation by now but maybe in few years i'il be like mrjj haha !

                            Haha it's good that you are learning instead of asking for it done like a lot of people on these forums. And hey we all started out bad, don't worry you'll be good in no time if you stick with it. ;)

                            I was just quite impressed with the number of posts in this topic.

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                            Payx
                            wrote on 2 Jan 2017, 14:09 last edited by
                            #122

                            @ambershark No problem ^^!

                            1 Reply Last reply
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                              Payx
                              wrote on 5 Jan 2017, 15:15 last edited by Payx 1 Jul 2017, 00:03
                              #123
                              This post is deleted!
                              1 Reply Last reply
                              0
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                                Payx
                                wrote on 7 Jan 2017, 00:04 last edited by
                                #124

                                I tried something without you (sorry ahah)

                                QLabel abc;
                                abc.setPixmap(scaledPix);
                                abc.show();
                                
                                

                                it compiles but there is a error : QPixmap::scaled: Pixmap is a null pixmap

                                M 1 Reply Last reply 7 Jan 2017, 01:32
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                                • P Payx
                                  7 Jan 2017, 00:04

                                  I tried something without you (sorry ahah)

                                  QLabel abc;
                                  abc.setPixmap(scaledPix);
                                  abc.show();
                                  
                                  

                                  it compiles but there is a error : QPixmap::scaled: Pixmap is a null pixmap

                                  M Offline
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                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on 7 Jan 2017, 01:32 last edited by mrjj 1 Jul 2017, 01:32
                                  #125

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

                                  scaledPix

                                  Sounds like scaledPix is not initialize as it should , which often
                                  comes from not being able to load a file.

                                  Make sure the image you are scaling, is indeed valid. (loaded)

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                                    Payx
                                    wrote on 7 Jan 2017, 01:51 last edited by Payx 1 Jul 2017, 02:09
                                    #126

                                    Before posting, i've tried to just

                                    QPixmap pix(":/img/ballebleue.png")
                                    ui->setPixmap .....
                                    

                                    and it works

                                    u said "scaledPix is not initialize as it should ?"

                                    EDIT : Happy New Year !

                                    M 1 Reply Last reply 7 Jan 2017, 09:04
                                    0
                                    • P Payx
                                      7 Jan 2017, 01:51

                                      Before posting, i've tried to just

                                      QPixmap pix(":/img/ballebleue.png")
                                      ui->setPixmap .....
                                      

                                      and it works

                                      u said "scaledPix is not initialize as it should ?"

                                      EDIT : Happy New Year !

                                      M Offline
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                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on 7 Jan 2017, 09:04 last edited by
                                      #127

                                      @Payx

                                      Yes That would make the pix valid.

                                      To get the error " Pixmap is a null pixmap" for scaledPix means that
                                      it was not valid. It was empty. so if it came from a scale function, it means
                                      that the image u scaled to get scaledPix was empty.

                                      Happy new Year :)

                                      1 Reply Last reply
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                                        Payx
                                        wrote on 7 Jan 2017, 16:51 last edited by
                                        #128
                                        					QLabel abc;
                                        //          int Cost = ci.Cost;
                                        					QPixmap pix( ci.ImageName );
                                        					QPixmap scaledPix = pix.scaled(   8, 8,
                                        																				 Qt::KeepAspectRatio,
                                        																				 Qt::SmoothTransformation
                                        																				 );
                                        					abc.setPixmap(scaledPix);
                                        					abc.show();
                                        
                                        

                                        i have this :

                                        so the error come from "QPixmap pix" who is empty

                                        so the line "QPixmap pix( ci.ImageName );" dont create a pixmap from my QMap ?

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                                        • M Offline
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                                          mrjj
                                          Lifetime Qt Champion
                                          wrote on 7 Jan 2017, 17:02 last edited by
                                          #129
                                          • QPixmap pix( ci.ImageName );" dont create a pixmap from my QMap ?

                                          That would be my guess yes.

                                          You can check pix with isNull()

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