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How to using GIF image for QT ?

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  • N Offline
    N Offline
    Nguyen Thang Phong
    wrote on last edited by
    #9

    @Christian-Ehrlicher

    image.png
    I tried but not working

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    • Christian EhrlicherC Offline
      Christian EhrlicherC Offline
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #10

      Then the path you given to QMovie does not exist. Check it

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      • N Offline
        N Offline
        Nguyen Thang Phong
        wrote on last edited by
        #11

        @Christian-Ehrlicher
        I using pixmap to assign direct for GIF image but run not appear ?
        No away to solution ...

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        • Christian EhrlicherC Offline
          Christian EhrlicherC Offline
          Christian Ehrlicher
          Lifetime Qt Champion
          wrote on last edited by
          #12

          Again: Check if the file exists. E.g. with QFile::exists() ...

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          • N Offline
            N Offline
            Nguyen Thang Phong
            wrote on last edited by Nguyen Thang Phong
            #13

            @Christian-Ehrlicher @JonB
            image.png
            So, check supported image format to print formats bmp,pbm,pgm,png,ppm,xbm,xpm not found gif ?

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            • JonBJ Offline
              JonBJ Offline
              JonB
              wrote on last edited by JonB
              #14

              I do not know for sure that GIF should appear in supportedImageFormats(), though I agree I would have thought it should.
              I suggested earlier that you try to display a GIF as an image on a QLabel, not in a QMovie.
              @Christian-Ehrlicher asked you to verify that the path to the GIF file you test really does exist via QFile::exists().

              JoeCFDJ 1 Reply Last reply
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              • N Offline
                N Offline
                Nguyen Thang Phong
                wrote on last edited by
                #15

                @Christian-Ehrlicher @JonB
                image.png
                I tried add to pixmap

                JonBJ 1 Reply Last reply
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                • N Nguyen Thang Phong

                  @Christian-Ehrlicher @JonB
                  image.png
                  I tried add to pixmap

                  JonBJ Offline
                  JonBJ Offline
                  JonB
                  wrote on last edited by
                  #16

                  @Nguyen-Thang-Phong
                  I do not use resources and I do not know whether that ../..../additonal.qrc path is right.
                  What does QFile::exists(":/loading.gif") return?
                  If you place a .gif file in your actual file system and try

                  qDebug() << QFile::exists("c:/full/path/to/file.gif");
                  // `label` is some `QLabel *` you have created and is visible in your UI
                  label->setPixmap(new QPixmap("c:/full/path/to/file.gif"));
                  

                  (I think the above is right, untested, adjust as necessary) does that work?

                  Otherwise I guess it is indeed a "static" issue, and only someone like @Christian-Ehrlicher knows what the issue might be.

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                  • JonBJ JonB

                    I do not know for sure that GIF should appear in supportedImageFormats(), though I agree I would have thought it should.
                    I suggested earlier that you try to display a GIF as an image on a QLabel, not in a QMovie.
                    @Christian-Ehrlicher asked you to verify that the path to the GIF file you test really does exist via QFile::exists().

                    JoeCFDJ Offline
                    JoeCFDJ Offline
                    JoeCFD
                    wrote on last edited by JoeCFD
                    #17

                    @JonB I play a GIF file in a QMovie in a QLabel.

                    JonBJ 1 Reply Last reply
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                    • N Nguyen Thang Phong

                      @JonB
                      m_movie = new QMovie(gif);
                      m_label->setMovie(m_movie);
                      m_movie->start();
                      and add QTPLUGIN += qgif into file .pro
                      But not display when check using
                      qDebug() << "supported formats: " << QImageReader::supportedImageFormats();
                      supported formats: QList("bmp", "pbm", "pgm", "png", "ppm", "xbm", "xpm")

                      JoeCFDJ Offline
                      JoeCFDJ Offline
                      JoeCFD
                      wrote on last edited by JoeCFD
                      #18

                      @Nguyen-Thang-Phong Did you try the following in the pro file?

                      CONFIG   += static
                      # For static plugins
                      static {
                          # Include the GIF plugin
                          QTPLUGIN += qgif
                      }
                      
                      N 1 Reply Last reply
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                      • JoeCFDJ JoeCFD

                        @JonB I play a GIF file in a QMovie in a QLabel.

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by
                        #19

                        @JoeCFD said in How to using GIF image for QT ?:

                        @JonB I play a GIF file in a QMovie in a QLabel.

                        I know you do. And I have suggested removing the QMovie level, to eliminate that, by assigning a created QPixmap from a GIF file directly to the QLabel, which can display GIF images, to see if that works. And I have also suggested using an external, actual GIF file instead of one in a Qt resource, and various QFile::exists() checks to verify the file or resource can be found. Up to you whether you do these things, but they check for various problems. It may well be that your issue is static-related and these will not show anything wrong, but it is what I would do before proceeding.

                        JoeCFDJ 1 Reply Last reply
                        0
                        • JonBJ JonB

                          @JoeCFD said in How to using GIF image for QT ?:

                          @JonB I play a GIF file in a QMovie in a QLabel.

                          I know you do. And I have suggested removing the QMovie level, to eliminate that, by assigning a created QPixmap from a GIF file directly to the QLabel, which can display GIF images, to see if that works. And I have also suggested using an external, actual GIF file instead of one in a Qt resource, and various QFile::exists() checks to verify the file or resource can be found. Up to you whether you do these things, but they check for various problems. It may well be that your issue is static-related and these will not show anything wrong, but it is what I would do before proceeding.

                          JoeCFDJ Offline
                          JoeCFDJ Offline
                          JoeCFD
                          wrote on last edited by
                          #20

                          @JonB It is not a QMovie issue. May be better to try to make his code to run dynamically with gif plugin first. And then build his app with gif plugin statically.

                          JonBJ 1 Reply Last reply
                          1
                          • JoeCFDJ JoeCFD

                            @JonB It is not a QMovie issue. May be better to try to make his code to run dynamically with gif plugin first. And then build his app with gif plugin statically.

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote on last edited by JonB
                            #21

                            @JoeCFD
                            I understand, but was trying to simplify, and follow @Christian-Ehrlicher's suggestion of checking file exists and removing resources from OP's situation, as I don't know what he actually has there/where.

                            If you are happy to take over here that's fine :) If the fact that the OP's supportedImageFormats() does not include GIF indicates that is where the problem lies then obviously all my questions are not relevant.

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                            • JoeCFDJ JoeCFD

                              @Nguyen-Thang-Phong Did you try the following in the pro file?

                              CONFIG   += static
                              # For static plugins
                              static {
                                  # Include the GIF plugin
                                  QTPLUGIN += qgif
                              }
                              
                              N Offline
                              N Offline
                              Nguyen Thang Phong
                              wrote on last edited by
                              #22

                              @JoeCFD
                              Thank you, I will try

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                              • N Offline
                                N Offline
                                Nguyen Thang Phong
                                wrote on last edited by
                                #23

                                @Christian-Ehrlicher @JonB @JoeCFD
                                I have tried the solution, but not GIF image format to work.

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