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How to Develop a Calendar Widget.

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  • A Offline
    A Offline
    andre
    wrote on last edited by
    #85

    I think you will need to use something like this:"

    @
    QUrl imageUrl;
    //set the url to some valid value
    format.setProperty(QTextFormat::BackgroundImageUrl, QVariant(imageUrl));
    @

    But I don't think that will work, because the QCalendarWidget documentation states:
    [quote]
    Only a subset of the properties in QTextCharFormat are used by the calendar widget. Currently, the foreground, background and font properties are used to determine the rendering of individual cells in the widget.[/quote]

    Seems like you can only use the QTextCharFormat for the simple stuff, not for the fancy stuff. If you need to put an image in a cell, you are going to need to subclass QCalendarWidget and reimplement paintCell to do the rendering of your cells yourself.

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    • B Offline
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      BorahAnshuman
      wrote on last edited by
      #86

      hello andre

      i had implement ur code like this..

      @QUrl url = QUrl::fromEncoded("http://baytrail.abag.ca.gov/vtour/map4/access/CyteHils/Trail_to_Red_Hill_Summit.JPG");

      safedate.setProperty(QTextCharFormat::BackgroundImageUrl,QVariant(url));//safedate is an object of QTextCharFormat
      
      ui->calendarWidget->setDateTextFormat(QDate(2011,4,19),startdate);@
      

      but its not working..is anything missing here

      regards
      Anshuman

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      • I Offline
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        imrrk
        wrote on last edited by
        #87

        hello andre,have you observed in the qcalendarwidget,at first time it shows the currentdate,but when we select a different date ,their is no such marker which tells that it is a currentdate,i mean to say that the currentdate should be underlined so that when a user selects a different date ,the currentdate can be identified by the underlined mark.

        Regards
        imrrk

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        • A Offline
          A Offline
          andre
          wrote on last edited by
          #88

          [quote author="BorahAnshuman" date="1303196388"]hello andre

          i had implement ur code like this..

          @QUrl url = QUrl::fromEncoded("http://baytrail.abag.ca.gov/vtour/map4/access/CyteHils/Trail_to_Red_Hill_Summit.JPG");

          safedate.setProperty(QTextCharFormat::BackgroundImageUrl,QVariant(url));//safedate is an object of QTextCharFormat
          
          ui->calendarWidget->setDateTextFormat(QDate(2011,4,19),startdate);@
          

          but its not working..is anything missing here

          regards
          Anshuman[/quote]

          What is missing, is that you did not read beyond the code snippet I posted. You know, the part that states that the code snippet is not going to work, as documented for QCalendarWidget, and that you need other ways of doing this.

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          • A Offline
            A Offline
            andre
            wrote on last edited by
            #89

            [quote author="imrrk" date="1303196445"]hello andre,have you observed in the qcalendarwidget,at first time it shows the currentdate,but when we select a different date ,their is no such marker which tells that it is a currentdate,i mean to say that the currentdate should be underlined so that when a user selects a different date ,the currentdate can be identified by the underlined mark.

            Regards
            imrrk
            [/quote]
            So, why don't you set a different QTextCharFormat for the current date then? You can change the font using that class...

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            • I Offline
              I Offline
              imrrk
              wrote on last edited by
              #90

              ok thanks andre,i got it

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              • B Offline
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                BorahAnshuman
                wrote on last edited by
                #91

                Hello andre

                As i am very new to qt so can u give me a brief idea of hw to implement paintCell to do the rendering of each cell...

                with regards
                Anshuman

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                • A Offline
                  A Offline
                  andre
                  wrote on last edited by
                  #92

                  Why don't you use the QCalendarWidget sources as inspiration for that?

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                  • B Offline
                    B Offline
                    BorahAnshuman
                    wrote on last edited by
                    #93

                    hello andre

                    thanks for ur reply..

                    Actually i hv been go through that source code..but i havent found any idea regarding setting of background image in particular cell..and as u said that to set an image in a particular cell we hv to implement paintcell to do the rendering of each cell…but hw this can be done..can u give me an idea for that

                    with regards
                    Anshuman

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                    • G Offline
                      G Offline
                      goetz
                      wrote on last edited by
                      #94

                      The signature of the method is:

                      @
                      QCalendarWidget::paintCell(QPainter *painter, const QRect &rect, const QDate &date)
                      @

                      So, I suggest you have a look at QPainter's drawImage(), drawPixmap() and drawPicture() methods.

                      http://www.catb.org/~esr/faqs/smart-questions.html

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                      • A Offline
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                        andre
                        wrote on last edited by
                        #95

                        You know what? Perhaps you should look into this yourself. Did you look in the documentation for QPainter?

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                        • I Offline
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                          imrrk
                          wrote on last edited by
                          #96

                          hey volker through paintcell method can we add image to the particular cells in calendarwidget?.in my project i have directly taken the qcalendarwidget and dragged it in the form,so how i should implement it.

                          regards
                          imrrk

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                          • G Offline
                            G Offline
                            goetz
                            wrote on last edited by
                            #97

                            [quote author="imrrk" date="1303207582"]hey volker through paintcell method can we add image to the particular cells in calendarwidget..
                            [/quote]

                            You know the meaning of the sign "?", don't you? If so, then please use it appropriately, if not, please look up in google.

                            And now, please read the documentation on QPainter. We will not do this for you, this is your part! It has all the information you need and to start playing around.

                            http://www.catb.org/~esr/faqs/smart-questions.html

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                            • Z Offline
                              Z Offline
                              ZapB
                              wrote on last edited by
                              #98

                              Please just try it. Andre and Volker are not your personal assistants. They have even told you which QPainter calls to read up on. The clue is in the name QPainter::drawPixmap()!

                              Nokia Certified Qt Specialist
                              Interested in hearing about Qt related work

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                              • I Offline
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                                imrrk
                                wrote on last edited by
                                #99

                                i know volker,fine,i will read the doc and get back to you with my code..

                                regards
                                imrrk

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                                • B Offline
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                                  BorahAnshuman
                                  wrote on last edited by
                                  #100

                                  hello volker

                                  actually i had read about QPainters but doesnt know hw to implement it..from where to start

                                  i had given a code,,u plz check it whether its ok to work or not..

                                  @QPainter* pPainter = new QPainter(this);
                                  pPainter->drawPixmap(rect(), QPixmap(":/images/bg.png"));@

                                  after that what should i do cant find it
                                  regards

                                  Anshuman

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                                  • G Offline
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                                    goetz
                                    wrote on last edited by
                                    #101

                                    Read the docs. If you really do so, you will find a link to an example that even contains drawing pixmaps. Grab it, play with it, adapt it. This all is really basic stuff, explained multiple times in the docs with uncountable examples in the docs. We're not going to do your homework!

                                    http://www.catb.org/~esr/faqs/smart-questions.html

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                                    • A Offline
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                                      andre
                                      wrote on last edited by
                                      #102

                                      imrrk and/or Anshuman:

                                      I am really done with this thread. Please do all of us here, including first and foremost yourself, a big favor, and get yourself enrolled in a good programming course in C++. If they use Qt, than that is a bonus, but that is not even needed. Otherwise, perhaps you should draft up a document describing what you want to achieve (not how you want to do that), and get yourself a consultant to do the work for you. I think a good one can do what you have achieved in the course of weeks of postings and copy/pasting snippets you have managed to beg of the contributers here in a matter of an hour or so. As it stands, I doubt you are able to ever complete whatever project you are on, and I feel spending any more time on this issue is a waste.

                                      All the best of luck, I am signing off.

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                                      • B Offline
                                        B Offline
                                        BorahAnshuman
                                        wrote on last edited by
                                        #103

                                        ok..volker and /andre..thanks..i will try my level b est in doing so..but if any doubt arises i will ask u..

                                        with regards
                                        Anshuman

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                                        • G Offline
                                          G Offline
                                          goetz
                                          wrote on last edited by
                                          #104

                                          [quote author="BorahAnshuman" date="1303210680"]ok..volker and /andre..thanks..i will try my level b est in doing so..but if any doubt arises i will ask u..

                                          with regards
                                          Anshuman[/quote]

                                          You (in plural or singular meaning - choose whatever you want) may ask, but don't expect any further answers. I step out too.

                                          http://www.catb.org/~esr/faqs/smart-questions.html

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