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How to include .txt on Qt

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  • mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #102

    No, you will have to resize it, else it will be exactly as in the file.( I assume too big)
    the scaled function returns a copy of the pixmap that is scaled to
    WIDTH, HEIGHT. so it will fit in your area.

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    • P Offline
      P Offline
      Payx
      wrote on last edited by
      #103

      so if my rectangle is 8*8 tell me if it's correct :

      QPixmap scaledPix = pix.scaled(   8, 8
                                     Qt::KeepAspectRatio,
                                     Qt::SmoothTransformation
                                     );
      
      painter.drawPixmap(QPoint(i,j), scaledPix);
      

      just that ?

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      • mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by mrjj
        #104

        Yes , that should draw image as 8x8 at i,j.
        Note the flag Qt::KeepAspectRatio which means it might not be 8x8 directly but
        maybe 8x6 if the original images was not square. AspectRatio means keep the relation between height and width.

        A 1 Reply Last reply
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        • mrjjM mrjj

          Yes , that should draw image as 8x8 at i,j.
          Note the flag Qt::KeepAspectRatio which means it might not be 8x8 directly but
          maybe 8x6 if the original images was not square. AspectRatio means keep the relation between height and width.

          A Offline
          A Offline
          ambershark
          wrote on last edited by
          #105

          @mrjj 104 posts on this thread... you are a patient person mrjj. ;) I would have just written the program for him by now, lol.

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

          P 1 Reply Last reply
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          • A ambershark

            @mrjj 104 posts on this thread... you are a patient person mrjj. ;) I would have just written the program for him by now, lol.

            P Offline
            P Offline
            Payx
            wrote on last edited by Payx
            #106

            @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 ?

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            • mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #107

              Hi
              hehe @ambershark , yes that would be faster but in this case,
              declaration and scopes are part of the exercise so hence the amount of posts. :)

              @Payx
              The j and is local variable in your for loops
              Yes it will work to make them member of the class but you actually give them to
              Remplissage via the QPoint(i,j)
              Remplissage(pixi,QPoint(i,j),QSize(z,z),Couleurdominante(pixi,QPoint(i,j),QSize(z,z)));
              so inside the Remplissage function, i and j are
              int i = topLeft.x();
              int j=topLeft.y();

              • it tell that painter was not declared too, so i search to the QPainter class,
                Did you #include<QPainter> ?

              Calling it like
              painter.drawPixmap(topLeft, scaledPix);
              should work.

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              • P Offline
                P Offline
                Payx
                wrote on last edited by
                #108

                Yes i have already test with include QPainter, same error ^^

                mrjjM 1 Reply Last reply
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                • P Payx

                  Yes i have already test with include QPainter, same error ^^

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by mrjj
                  #109

                  @Payx
                  oh did you create the painter first ?
                  Oh You need to create it first. as a variable.
                  QPainter painter(this);

                  But here comes an issue. you can only use a painter in a PaintEvent function.

                  So only other way is to have a Pixmap as member and then paint to it in Remplissage
                  and then later paint the pixmap in PaintEvent.

                  Anyway to paint to an image
                  QPixmap pix(500,500); // make sure size matches, might need to live as member in class for paintEvent
                  QPainter painter(&pix);// give pix to painter
                  ...
                  painter.drawPixmap(topLeft, scaledPix); //

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                  • P Offline
                    P Offline
                    Payx
                    wrote on 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 ?

                    mrjjM 1 Reply Last reply
                    0
                    • P Payx

                      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 ?

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on last edited by mrjj
                      #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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                      • P Offline
                        P Offline
                        Payx
                        wrote on last edited by mrjj
                        #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.

                        mrjjM 1 Reply Last reply
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                        • P Payx

                          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.

                          mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on last edited by mrjj
                          #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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                          • P Offline
                            P Offline
                            Payx
                            wrote on last edited by
                            #114

                            What is the simpliest method ? ahah

                            mrjjM 1 Reply Last reply
                            0
                            • P Payx

                              What is the simpliest method ? ahah

                              mrjjM Offline
                              mrjjM Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on 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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                              • P Offline
                                P Offline
                                Payx
                                wrote on last edited by
                                #116

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

                                mrjjM 1 Reply Last reply
                                0
                                • P Payx

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

                                  mrjjM Offline
                                  mrjjM Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on 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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                                  • P Offline
                                    P Offline
                                    Payx
                                    wrote on 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);
                                    

                                    ?

                                    mrjjM 1 Reply Last reply
                                    0
                                    • P Payx

                                      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);
                                      

                                      ?

                                      mrjjM Offline
                                      mrjjM Offline
                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on 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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                                      • P Offline
                                        P Offline
                                        Payx
                                        wrote on 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

                                          @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
                                          A Offline
                                          ambershark
                                          wrote on 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
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