CountDownWidget Class Reference

A widget which displays a decrementing number. More...

#include <CountDownWidget.h>

Inheritance diagram for CountDownWidget:

Public Member Functions
	CountDownWidget (int start, int stop, unsigned msec, WContainerWidget *parent=0)
	Create a new CountDownWidget. More...
Wt::Signal< void > &	done ()
	Signal emitted when the countdown reached stop. More...
void	cancel ()
	Cancel the count down. More...

Private Member Functions
void	timerTick ()
	Process one timer tick. More...

Private Attributes
Wt::Signal< void >	done_
int	start_
int	stop_
int	current_
WTimer *	timer_

Detailed Description

A widget which displays a decrementing number.

Definition at line 25 of file CountDownWidget.h.

Constructor & Destructor Documentation

CountDownWidget()

CountDownWidget::CountDownWidget	(	int	start,
		int	stop,
		unsigned	msec,
		WContainerWidget *	parent = 0
	)

Create a new CountDownWidget.

The widget will count down from start to stop, decrementing the number every msec milliseconds.

Definition at line 12 of file CountDownWidget.C.

  : WText(parent),
    done_(this),
    start_(start),
    stop_(stop)
{
  stop_ = std::min(start_ - 1, stop_);  // stop must be smaller than start
  current_ = start_;

  timer_ = new WTimer(this);
  timer_->setInterval(msec);
  timer_->timeout().connect(this, &CountDownWidget::timerTick);
  timer_->start();

  setText(boost::lexical_cast<std::string>(current_));
}

Member Function Documentation

cancel()

void CountDownWidget::cancel

(

)

Cancel the count down.

Definition at line 30 of file CountDownWidget.C.

{
  timer_->stop();
}

done()

Wt::Signal<void>& CountDownWidget::done ( )

inline

Signal emitted when the countdown reached stop.

Definition at line 38 of file CountDownWidget.h.

{ return done_; }

timerTick()

void CountDownWidget::timerTick ( )

private

Process one timer tick.

Definition at line 35 of file CountDownWidget.C.

{
  setText(boost::lexical_cast<std::string>(--current_));

  if (current_ <= stop_) {
    timer_->stop();
    done_.emit();
  }
}

Member Data Documentation

current_

int CountDownWidget::current_

private

Definition at line 49 of file CountDownWidget.h.

done_

Wt::Signal<void> CountDownWidget::done_

private

Definition at line 45 of file CountDownWidget.h.

start_

int CountDownWidget::start_

private

Definition at line 46 of file CountDownWidget.h.

stop_

int CountDownWidget::stop_

private

Definition at line 47 of file CountDownWidget.h.

timer_

WTimer* CountDownWidget::timer_

private

Definition at line 51 of file CountDownWidget.h.

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The documentation for this class was generated from the following files:

• /build/witty-VcIVtU/witty-3.3.6+dfsg/examples/mission/CountDownWidget.h
• /build/witty-VcIVtU/witty-3.3.6+dfsg/examples/mission/CountDownWidget.C