How to create a custom calender widget: Difference between revisions
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{{ | {{LangSwitch}} | ||
[[Category:HowTo]] | [[Category:HowTo]] | ||
[[Category:Snippets]] | [[Category:Snippets]] | ||
There are numerous ways to make a calendar. And the simplest one , must be using the {{DocLink|QCalendarWidget}}. However, we have limited control over the appearance of this widget. | |||
Inheriting the {{DocLink|QCalendarWidget}} can solve the issue. Here is the example class which explains a 'custom' calendar widget. | |||
Inheriting the | |||
The cells, or the particular days are customized, and in order to do this , we need to take control over the protected function [http://doc.qt.io/qt-5.0/qtwidgets/qcalendarwidget.html#paintCell paintCell] | The cells, or the particular days are customized, and in order to do this , we need to take control over the protected function [http://doc.qt.io/qt-5.0/qtwidgets/qcalendarwidget.html#paintCell paintCell] | ||
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'''Example:''' | '''Example:''' | ||
<code>class ourCalendarWidget : public QCalendarWidget | <code> | ||
class ourCalendarWidget : public QCalendarWidget | |||
{ | { | ||
Q_OBJECT | |||
public: | |||
ourCalendarWidget(QWidget* parent=0) | |||
: QCalendarWidget(parent) | |||
{ | |||
} | |||
~ourCalendarWidget() | |||
{ | |||
} | |||
void ourCall(QDate date) | |||
{ | |||
// here we set some conditions | |||
update(); | |||
void ourCall(QDate date) | } | ||
{ | |||
} | |||
protected: | protected: | ||
void paintCell(QPainter *painter, const QRect &rect, const QDate &date) const | void paintCell(QPainter *painter, const QRect &rect, const QDate &date) const | ||
{ | { | ||
if ( ) { // our conditions | |||
// When the conditions are matched, passed QDate is drawn as we like. | |||
painter->save(); | |||
painter->save(); | painter->drawEllipse(rect); // here we draw n ellipse and the day— | ||
painter->drawText(rec, Qt::TextSingleLine, Qt::AlignCenter,QString::number(date.day())); | |||
painter->restore(); | |||
} else { // if our conditions are not matching, show the default way. | |||
QCalendarWidget::paintCell(painter, rect, date); | |||
} | |||
} | |||
}; | |||
</code> | |||
}</code> | |||
That is all. Happy coding. | That is all. Happy coding. |
Revision as of 18:54, 28 June 2015
There are numerous ways to make a calendar. And the simplest one , must be using the QCalendarWidget. However, we have limited control over the appearance of this widget.
Inheriting the QCalendarWidget can solve the issue. Here is the example class which explains a 'custom' calendar widget.
The cells, or the particular days are customized, and in order to do this , we need to take control over the protected function paintCell
Example:
class ourCalendarWidget : public QCalendarWidget
{
Q_OBJECT
public:
ourCalendarWidget(QWidget* parent=0)
: QCalendarWidget(parent)
{
}
~ourCalendarWidget()
{
}
void ourCall(QDate date)
{
// here we set some conditions
update();
}
protected:
void paintCell(QPainter *painter, const QRect &rect, const QDate &date) const
{
if ( ) { // our conditions
// When the conditions are matched, passed QDate is drawn as we like.
painter->save();
painter->drawEllipse(rect); // here we draw n ellipse and the day—
painter->drawText(rec, Qt::TextSingleLine, Qt::AlignCenter,QString::number(date.day()));
painter->restore();
} else { // if our conditions are not matching, show the default way.
QCalendarWidget::paintCell(painter, rect, date);
}
}
};
That is all. Happy coding.