How to Develop a Calendar Widget.

imrrk · wrote on 13 Apr 2011, 11:29

i didnt get you gerolf,can u please ellaborate..

thanks
imrrk

andre · wrote on 13 Apr 2011, 11:35

You are now emitting signals from Dialog1 (you might want to think of a more descriptive name to improve code readability), but you are not handing these signals in slots. To fix that, you are going to need to define two slots in Dialog, and connect the signals to these slots.

imrrk · wrote on 13 Apr 2011, 11:38

hello andre,those slots i have defined in my previous dialog.cpp..ie setcolors() and unsetcolors(); and the above code is of the another dialog from where i am calling these slots.

andre · wrote on 13 Apr 2011, 12:05

So... if you have the slots (again: you did not show us, you just told us now after asking), and you have the signals (and, I hope, you have connected them), what is then the problem?

imrrk · wrote on 13 Apr 2011, 12:20

hello andre,these were the same slots which i had show earlier in this post..i was connecting those slots with signals in my second dialog,I hope you r getting me..

andre · wrote on 13 Apr 2011, 12:28

OK. Fine, you are re-using the slots you already had. Great, and sensible I suppose. And does that all work properly now?

imrrk · wrote on 13 Apr 2011, 12:30

Now Andre...its not working

andre · wrote on 13 Apr 2011, 12:36

Is the problem that you don't see the dialog pop up, or that the dates are not cleared when you click one of the buttons on the dialog?

Did you:

actually connect the signals with the slots?
check your output while running to see if the connection worked?
put debug statements or breakpoints at the relevant places to track what breaks down exactly?

imrrk · wrote on 13 Apr 2011, 12:44

actually dates colors are not cleared,when i click on the buttons..

andre · wrote on 13 Apr 2011, 12:45

[quote author="Andre" date="1302698169"]Did you:

actually connect the signals with the slots?
check your output while running to see if the connection worked?
put debug statements or breakpoints at the relevant places to track what breaks down exactly?
[/quote]

imrrk · wrote on 13 Apr 2011, 12:51

i will check it out and get back to u..thanks for your help

imrrk · wrote on 14 Apr 2011, 05:50

hwy volker i created two signals and i emitted them on click of push buttons,now in which dialog i should connect signals and which will be the sender and reciever ,I m not getting..

regards
imrrk

giesbert · wrote on 14 Apr 2011, 06:19

The sender of the signal is typically the object, that sends them, the receivedr is the object that implements the slots.

so If you are inside the code of dlg1, which implements the slots and invoke there a dialog dlgh2 which emiuts the signals you do:

@
dlg1::foo()
{
dlg2 dlg;
connect(&dlg, SIGNAL(fooSignal()), this, SLOT(fooSlot()));
dlg.exec();
}
@

imrrk · wrote on 14 Apr 2011, 06:55

hey gerolf in dialog1.cpp ,i have emmitted two signals on click of push buttons and connected them as shown below..I dont know whether i am correct in this,now I have my maindialog1.cpp where i wriiten the slots for setting colors,now I am not getting how shall i make connections with the signals i emmitted in dialog1.cpp and the slots in my maindialog.cpp,which contains the slots..

@#include "dialog1.h"
#include "ui_dialog1.h"
#include<QCalendarWidget>
Dialog1::Dialog1(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog1)
{
ui->setupUi(this);
connect(ui->set,SIGNAL(clicked()),this,SIGNAL(setclicked()));
connect(ui->unset,SIGNAL(clicked()),this,SIGNAL(unsetclicked()));
}

Dialog1::~Dialog1()
{
delete ui;
}

void Dialog1::on_set_clicked()
{
emit setclicked();
}

void Dialog1::on_unset_clicked()
{
emit unsetclicked();
}
@
this my dialog.cpp//
@#include "dialog.h"
#include "ui_dialog.h"
#include<QCalendarWidget>
#include<QDate>
#include "dialog1.h"
#include "ui_dialog1.h"
#include<QPainter>
#include <QtGui/QApplication>

Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
//Dialog1 a(this);
connect(&Dialog1,SIGNAL(setclicked(),this,SLOT(setcolors())));
connect(&Dialog1,SIGNAL(unsetclicked(),this,SLOT(unsetcolors())));

//   QCalendarWidget *cal=new QCalendarWidget();

// cal->setDateEditEnabled(1);
// cal->setFirstDayOfWeek(Qt::Wednesday);

// cal->show();
//ui->calendarWidget->setFirstDayOfWeek(Qt::Thursday);

//QTextCharFormat colddate;
//colddate.setBackground(Qt::yellow);

//QTextCharFormat hotdate;
//hotdate.setBackground(Qt::red);

//QTextCharFormat wetdate;
//wetdate.setBackground(Qt::green);

//QTextCharFormat raindate;
//raindate.setBackground(Qt::blue);

//ui->calendarWidget->setDateTextFormat(QDate(2011,4,1),colddate);
//ui->calendarWidget->setDateTextFormat(QDate(2011,4,5),hotdate);
//ui->calendarWidget->setDateTextFormat(QDate(2011,4,8),wetdate);
//ui->calendarWidget->setDateTextFormat(QDate(2011,4,9),raindate);
//ui->calendarWidget->setDateTextFormat(QDate(2011,4,12),colddate);
//ui->calendarWidget->setDateTextFormat(QDate(2011,4,14),hotdate);
}

Dialog::~Dialog()
{
delete ui;
}

void Dialog::on_calendarWidget_clicked(QDate date)
{
// ui->label->setText(date.toString());
//ui->textBrowser->setText(date.toString());
Dialog1 a(this);
a.show();
a.exec();

// ui->pushButton->setText(QString::number(date.day()));

}

void Dialog::setcolors()
{

safedate.setBackground(Qt::green);
//safedate.BackgroundImageUrl

unsafedate.setBackground(Qt::yellow);

fertiledate.setBackground(Qt::red);


startdate.setBackground(Qt::blue);


ui->calendarWidget->setDateTextFormat(QDate(2011,4,1),startdate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,5),safedate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,8),unsafedate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,9),fertiledate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,12),unsafedate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,14),safedate);

}

void Dialog::unsetcolors()
{
startdate.clearBackground();
safedate.clearBackground();
unsafedate.clearBackground();
fertiledate.clearBackground();
ui->calendarWidget->setDateTextFormat(QDate(2011,4,1),startdate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,5),safedate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,8),unsafedate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,9),fertiledate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,12),unsafedate);
ui->calendarWidget->setDateTextFormat(QDate(2011,4,14),safedate);
}@

regards
imrrk

andre · wrote on 14 Apr 2011, 07:08

In dialog.cpp, you need to make the connections not on lines 14 and 15, but where you actually create the dialog, after line 57. There you have a reference to both the dialogs, so there you make the connection.

imrrk · wrote on 14 Apr 2011, 07:39

thanks andre ,I got it and its working fine,thanks a lot

imrrk · wrote on 14 Apr 2011, 07:42

hey andre as we have set the background colors for the cells can we set the backgroundimage for the cells...by using,

QTextcharformat date;
date.setbackgroundimageurl

giesbert · wrote on 14 Apr 2011, 07:43

if this function exists, try it out.
have a look at the docs.

andre · wrote on 14 Apr 2011, 07:49

[quote author="imrrk" date="1302766931"]hey andre as we have set the background colors for the cells can we set the backgroundimage for the cells...by using,

QTextcharformat date;
date.setbackgroundimageurl[/quote]
Could you make your variable naming any more confusing? I mean: you're working with calendars and dates, and you call a variable that represents a text format date?

Anyway, QTextCharFormat (or its base class QTextFormat) does not have a method setBackgroundImageUrl. At least, not that I could find. But you can use a QBrush instead of a color, so that opens up some more options as brushes can be quite fancy... Check the documentation of QBrush.

imrrk · wrote on 14 Apr 2011, 08:46

ok andre and gerolf,thanks for ur information,I will check out the doc and come up with some possibilities..

regards
imrrk