AnimatedPixmapItem Class Reference

#include <animateditem.h>

Inheritance diagram for AnimatedPixmapItem:

[legend]Collaboration diagram for AnimatedPixmapItem:

[legend]List of all members.

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Detailed Description

Definition at line 29 of file animateditem.h.

Public Member Functions
	AnimatedPixmapItem (const QList< QPixmap > &animation, QGraphicsScene *scene=0)
void	setFrame (int frame)
int	frame () const
int	frameCount () const
QPixmap	image (int frame) const
void	setVelocity (qreal xvel, qreal yvel)
qreal	xVelocity () const
qreal	yVelocity () const
QPainterPath	shape () const
void	advance (int phase)
Private Attributes
int	currentFrame
QList< QPixmap >	frames
qreal	vx
qreal	vy

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Constructor & Destructor Documentation

AnimatedPixmapItem::AnimatedPixmapItem	(	const QList< QPixmap > &	animation,
		QGraphicsScene *	scene = 0
	)

Definition at line 26 of file animateditem.cpp.

    : QGraphicsPixmapItem(0, scene), currentFrame(0), frames(animation), vx(0), vy(0)
{
}

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Member Function Documentation

void AnimatedPixmapItem::setFrame

(

int

frame

)

Definition at line 32 of file animateditem.cpp.

References QList< T >::at(), currentFrame, frames, QList< T >::isEmpty(), QGraphicsPixmapItem::setPixmap(), and QList< T >::size().

Referenced by KAsteroidsView::newShip(), KRock::nextFrame(), KAsteroidsView::processShip(), and KAsteroidsView::rockHit().

{
    if (!frames.isEmpty()) {
        currentFrame = frame % frames.size();
        setPixmap(frames.at(currentFrame));
    }
}

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int AnimatedPixmapItem::frame

(

)

const [inline]

Definition at line 35 of file animateditem.h.

References currentFrame.

Referenced by KRock::nextFrame(), and KAsteroidsView::processShip().

    { return currentFrame; }

int AnimatedPixmapItem::frameCount

(

)

const [inline]

Definition at line 37 of file animateditem.h.

References frames, and QList< T >::size().

Referenced by KRock::nextFrame(), KAsteroidsView::processShip(), and KAsteroidsView::rockHit().

    { return frames.size(); }

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QPixmap AnimatedPixmapItem::image

(

int

frame

)

const [inline]

Definition at line 39 of file animateditem.h.

References QList< T >::at(), frames, QList< T >::isEmpty(), and QList< T >::size().

Referenced by KAsteroidsView::readSprites().

    { return frames.isEmpty() ? QPixmap() : frames.at(frame % frames.size()); }

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void AnimatedPixmapItem::setVelocity	(	qreal	xvel,
		qreal	yvel
	)			[inline]

Definition at line 41 of file animateditem.h.

References vx, and vy.

Referenced by KAsteroidsView::newShip(), KAsteroidsView::processShip(), and KAsteroidsView::rockHit().

    { vx = xvel; vy = yvel; }

qreal AnimatedPixmapItem::xVelocity

(

)

const [inline]

Definition at line 43 of file animateditem.h.

References vx.

Referenced by KAsteroidsView::rockHit().

    { return vx; }

qreal AnimatedPixmapItem::yVelocity

(

)

const [inline]

Definition at line 45 of file animateditem.h.

References vy.

Referenced by KAsteroidsView::rockHit().

    { return vy; }

QPainterPath AnimatedPixmapItem::shape

(

)

const [virtual]

Reimplemented from QGraphicsPixmapItem.

Definition at line 50 of file animateditem.cpp.

References QList< T >::at(), currentFrame, frames, QPixmap::height(), path, and QPixmap::width().

{
    QPainterPath path;
    path.addRect(0, 0,
                 frames.at(currentFrame).width(),
                 frames.at(currentFrame).height());
    return path;
}

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void AnimatedPixmapItem::advance

(

int

phase

)

[virtual]

This virtual function is called twice for all items by the QGraphicsScene::advance() slot. In the first phase, all items are called with phase == 0, indicating that items on the scene are about to advance, and then all items are called with phase == 1. Reimplement this function to update your item if you need simple scene-controlled animation.

The default implementation does nothing.

For individual item animation, an alternative to this function is to either use QGraphicsItemAnimation, or to multiple-inherit from QObject and QGraphicsItem, and animate your item using QObject::startTimer() and QObject::timerEvent().

See also:

QGraphicsItemAnimation, QTimeLine

Reimplemented from QGraphicsItem.

Definition at line 40 of file animateditem.cpp.

References QList< T >::at(), currentFrame, frames, QList< T >::isEmpty(), QGraphicsItem::moveBy(), QGraphicsPixmapItem::setPixmap(), QList< T >::size(), vx, and vy.

{
    if (phase == 1 && !frames.isEmpty()) {
        currentFrame = (currentFrame + 1) % frames.size();
        setPixmap(frames.at(currentFrame));
        if (vx || vy)
            moveBy(vx, vy);
    }
}

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Member Data Documentation

int AnimatedPixmapItem::currentFrame [private]

Definition at line 53 of file animateditem.h.

Referenced by advance(), frame(), setFrame(), and shape().

QList<QPixmap> AnimatedPixmapItem::frames [private]

Definition at line 54 of file animateditem.h.

Referenced by advance(), frameCount(), image(), setFrame(), and shape().

qreal AnimatedPixmapItem::vx [private]

Definition at line 55 of file animateditem.h.

Referenced by advance(), setVelocity(), and xVelocity().

qreal AnimatedPixmapItem::vy [private]

Definition at line 55 of file animateditem.h.

Referenced by advance(), setVelocity(), and yVelocity().

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

• examples/graphicsview/portedasteroids/animateditem.h
• examples/graphicsview/portedasteroids/animateditem.cpp

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