Qt的显示/隐藏部件动画 [英] Qt Show/Hide widget animation

问题描述

我想实现一个显示/隐藏部件动画。窗口小部件是一个QDockWidget，因此是QMainWindowLayout里面。

I'm trying to implement a show/hide widget animation. The widget is a QDockWidget and therefore is inside the QMainWindowLayout.

使用QPropertyAnimation好好尝试一下似乎工作，我得到的东西看起来就像是：

Using QPropertyAnimation doens't seem to work, I got something looking like that :

m_listViewDock->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
QPropertyAnimation* animation = new QPropertyAnimation(m_listViewDock, "geometry", m_listViewDock);

animation->setDuration(1000);

QRect g = m_listViewDock->geometry();
animation->setStartState(g);
g.setHeight(80);
animation->setEndState(g);
animation->start(QAbstractAnimation::DeleteWhenStopped);

不幸的是它没有做任何事情。我试图与其他属性（minimumHeight，fixedHeight固定高度），但同样的问题。

Unfortunately it doesn't do anything. I tried with other properties (minimumHeight, fixedHeight), but same issue.

我想我没有设置正确使用设计，但我的小部件的布局，即使我以最小的尺寸打我仍然没有任何结果。我应该使用哪种尺寸的政策，如果我想的大小玩？

I thought I didn't setup my widget layout correctly using the designer but even if I play with minimum sizes I still don't have any result. What kind of size policy should I use if I want to play with the size?

我卡住了，这将是如此之大，如果有人能澄清我的问题。我不知道我做错什么......

I'm stuck, it would be so great if someone could clarify my issue. I'm not sure I'm doing anything wrong...

在此先感谢您的帮助，
鲍里斯 -

Thanks in advance for your help, Boris -

推荐答案

顺便说一句，这里是Qt的程序员如何用它在QWidgetAnimator，主要用于停靠小部件的动画，我做的一模一样......

By the way, here is how Qt programmers used it in the QWidgetAnimator, mainly used for animations of dock widgets, I'm doing exactly the same... :

  const QRect final_geometry = _final_geometry.isValid() || widget->isWindow() ? _final_geometry :
        QRect(QPoint(-500 - widget->width(), -500 - widget->height()), widget->size());

#ifndef QT_NO_ANIMATION
    AnimationMap::const_iterator it = m_animation_map.constFind(widget);
    if (it != m_animation_map.constEnd() && (*it)->endValue().toRect() == final_geometry)
        return;

    QPropertyAnimation *anim = new QPropertyAnimation(widget, "geometry", widget);
    anim->setDuration(animate ? 200 : 0);
    anim->setEasingCurve(QEasingCurve::InOutQuad);
    anim->setEndValue(final_geometry);
    m_animation_map[widget] = anim;
    connect(anim, SIGNAL(finished()), SLOT(animationFinished()));
    anim->start(QPropertyAnimation::DeleteWhenStopped); 

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