animateditem.cpp Example File
graphicsview/portedasteroids/animateditem.cpp
#include "animateditem.h"
#include <QtGui/qbitmap.h>
#include <QtGui/qpainter.h>
AnimatedPixmapItem::AnimatedPixmapItem(const QList<QPixmap> &animation,
QGraphicsScene *scene)
: QGraphicsItem(0, scene), currentFrame(0), vx(0), vy(0)
{
for (int i = 0; i < animation.size(); ++i) {
QPixmap pixmap = animation.at(i);
Frame frame;
frame.pixmap = pixmap;
frame.shape = QPainterPath();
frame.boundingRect = pixmap.rect();
frames << frame;
}
}
void AnimatedPixmapItem::setFrame(int frame)
{
if (!frames.isEmpty()) {
prepareGeometryChange();
currentFrame = frame % frames.size();
}
}
void AnimatedPixmapItem::advance(int phase)
{
if (phase == 1)
moveBy(vx, vy);
}
QRectF AnimatedPixmapItem::boundingRect() const
{
return frames.at(currentFrame).boundingRect;
}
QPainterPath AnimatedPixmapItem::shape() const
{
const Frame &f = frames.at(currentFrame);
if (f.shape.isEmpty()) {
QPainterPath path;
path.addRegion(f.pixmap.createHeuristicMask());
const_cast<Frame &>(f).shape = path;
}
return f.shape;
}
void AnimatedPixmapItem::paint(QPainter *painter, const QStyleOptionGraphicsItem * ,
QWidget * )
{
painter->drawPixmap(0, 0, frames.at(currentFrame).pixmap);
}
Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies) |
Trademarks |
Qt 4.4.3 |