#include?“animationstackedwidget.h“

#include?
#include?

AnimationStackedWidget::AnimationStackedWidget（QWidget?*parent）
????:?QStackedWidget（parent）
{
????m_isAnimating?=?false;
????m_currentValue?=?0;
????m_currentIndex?=?0;
????m_previousIndex?=?0;

????m_animation?=?new?QPropertyAnimation（this?QByteArray（））;
????m_animation->setDuration（500）;
????m_animation->setEasingCurve（QEasingCurve::Linear）;
????m_animation->setStartValue（0）;
????m_animation->setEndValue（0）;
????connect（m_animation?SIGNAL（valueChanged（QVariant））?SLOT（valueChanged（QVariant）））;
????connect（m_animation?SIGNAL（finished（））?SLOT（animationfinished（）））;
}

AnimationStackedWidget::~AnimationStackedWidget（）
{
????delete?m_animation;
}

void?AnimationStackedWidget::paintEvent（QPaintEvent?*?event）
{
????if（m_isAnimating）
????{
????????QPainter?painter（this）;
????????QTransform?transform;
????????renderCurrentWidget（painter?transform）;
????????renderPreviousWidget（painter?transform）;
????}
????else
????{
????????QWidget::paintEvent（event）;
????}
}

void?AnimationStackedWidget::renderPreviousWidget（QPainter?&painter?QTransform?&transform）
{
????QWidget?*w?=?widget（m_previousIndex）;
????QPixmap?pixmap（?w->size（）?）;
????w->render（&pixmap）;

????Q_UNUSED（transform）;
????switch（m_type）
????{
????????case?BottomToTop?:
????????????????{
????????????????????painter.drawPixmap（0?height（）/2?pixmap）;
????????????????????break;
????????????????}
????????case?TopToBottom?:
????????????????{
????????????????????painter.drawPixmap（0?-height（）/2?pixmap）;
????????????????????break;
????????????????}
????????case?LeftToRight?:
????????????????{
????????????????????painter.drawPixmap（width（）/2?0?pixmap）;
????????????????????break;
????????????????}
????????case?RightToLeft?:
????????????????{
????????????????????painter.drawPixmap（-width（）/2?0?pixmap）;
????????????????????break;
????????????????}
????????default:?break;
????}
}

void?AnimationStackedWidget::renderCurrentWidget（QPainter?&painter?QTransform?&transform）
{
????QWidget?*w?=?widget（m_currentIndex）;
????QPixmap?pixmap（?w->size（）?）;
????w->render（&pixmap）;

????switch（m_type）
????{
????????case?BottomToTop?:
????????????????{
????????????????????transform.translate（0?m_currentValue）;
????????????????????painter.setTransform（transform）;
????????????????????painter.drawPixmap（0?-height（）/2?pixmap）;
????????????????????break;
????????????????}
????????case?TopToBottom?:
????????????????{
????????????????????transform.translate（0?m_currentValue）;
????????????????????painter.setTransform（transform）;
????????????????????painter.drawPixmap（0?height（）/2?pixmap）;
????????????????????break;
????????????????}
????????case?LeftToRight?:
????????????????{
????????????????????transform.translate（m_currentValue?0）;
????????????????????painter.setTransform（transform）;
????????????????????painter.drawPixmap（-width（）/2?0?pixmap）;
????????????????????break;
????????????????}
????????case?RightToLeft?:
????????????