How to Develop a Calendar Widget.

imrrk

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

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

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

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

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

imrrk

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

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

andre

[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

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

regards
imrrk

BorahAnshuman

hello friends

i want to change the font color for dates of calendar according to holidays ...for that i have used Qtextformat...but dont know hw can i use it to change the color of the font

andre

The last reply here I moved over from "this":http://developer.qt.nokia.com/forums/viewthread/5296/ topic.

imrrk/BorahAnshuman: please keep your topics in logical groups. It does not make sense to re-open a thread about how to format the dates in a QCalendarWidget in a topic that is about the relative performance of an application on device and in the simulator.

andre

[quote author="BorahAnshuman" date="1303188835"]hello friends

i want to change the font color for dates of calendar according to holidays ...for that i have used Qtextformat...but dont know hw can i use it to change the color of the font[/quote]

If the background color of a cell is controlled by setBackground, then it did not occor to you to look into the documentation of setForeground?

[quote]
Sets the foreground brush to the specified brush. The foreground brush is mostly used to render text.

See also foreground(), clearForeground(), and setBackground().
[/quote]

BorahAnshuman

Thanks for ur reply...its working..

BorahAnshuman

hello Andre

sorry for sending the question again...

how can i set backgroundImageUrl in each cell in calender…Actually i had use QTextCharformat for doing that but it not work..code i hv written is..
@QTextCharFormat format;

format.BackgroundImageUrl;@
My question is how can i set image url here….any clue please suggest..
thanks

andre

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.

BorahAnshuman

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

imrrk

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

andre

[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.

andre

[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...

imrrk

ok thanks andre,i got it