代码之家 › 专栏 › 技术社区 › Narek

QWidget-调整动画大小

qwidget animation qt c++

Narek · 技术社区 · 15 年前

说我有一个 QHBoxLayout 哪里有2个 QTextEdit 在它们之间有一个向右箭头的按钮。当你点击按钮时,右边 Q文本编辑 通过移动左边界逐渐闭合,直到它遇到右边界。同时,左边的右边框 Q文本编辑 Q文本编辑 释放。按下按钮后,系统状态恢复到原来的状态。

编辑:为了组织这个,我做了以下工作:

1) 在头文件中:

class MyWidget : public QWidget
{

    Q_OBJECT

    QTextEdit       *m_textEditor1;
    QTextEdit       *m_textEditor2;
    QPushButton     *m_pushButton;
    QHBoxLayout     *m_layout;
    int              m_deltaX;

public:

    MyWidget(QWidget * parent = 0);


    ~MyWidget(){}


private slots:
    void closeOrOpenTextEdit2(bool isClosing);


};

MyWidget::MyWidget(QWidget * parent):QWidget(parent),m_deltaX(0)
{


  m_pushButton = new QPushButton(this);
  m_pushButton->setText(">");
  m_pushButton->setCheckable(true);
  connect(m_pushButton, SIGNAL(clicked(bool)), this, SLOT(closeOrOpenTextEdit2(bool)));

  m_textEditor1 = new QTextEdit(this);
  m_textEditor1->setText("AAAAA AAAAAAAAAAA AAAAAAAAAAA  AAAAAAA AAAAAAAAAAA AAAAAAAAAAA  AA");

  m_textEditor2 = new QTextEdit(this);


  m_layout = new QHBoxLayout;
  m_layout->addWidget(m_textEditor1);
  m_layout->addWidget(m_pushButton);
  m_layout->addWidget(m_textEditor2);

  setLayout(m_layout);
}

void MyWidget::closeOrOpenTextEdit2(bool isClosing)
{
    QPropertyAnimation *animation1 = new QPropertyAnimation(m_textEditor2, "geometry");
    QPropertyAnimation *animation2 = new QPropertyAnimation(m_pushButton, "geometry");
    QPropertyAnimation *animation3 = new QPropertyAnimation(m_textEditor1, "geometry");

    if(isClosing) //close the second textEdit
    {
        m_pushButton->setText("<");

        QRect te2_1 = m_textEditor2->geometry();
        m_deltaX = te2_1.width()-3;
        QRect te2_2(te2_1.x()+m_deltaX, te2_1.y(), 3 ,te2_1.height());

        QRect pb_1 = m_pushButton->geometry();
        QRect pb_2(pb_1.x()+m_deltaX, pb_1.y(), pb_1.width() ,pb_1.height());

        QRect te1_1 = m_textEditor1->geometry();
        QRect te1_2(te1_1.x(), te1_1.y(), te1_1.width()+m_deltaX, te1_1.height());


         //animation->setDuration(10000);
         animation1->setStartValue(te2_1);
         animation1->setEndValue(te2_2);

         animation2->setStartValue(pb_1);
         animation2->setEndValue(pb_2);

         animation3->setStartValue(te1_1);
         animation3->setEndValue(te1_2);
    }
    else //open
    {
       m_pushButton->setText(">");

       QRect te2_1 = m_textEditor2->geometry();
       QRect te2_2(te2_1.x()-m_deltaX, te2_1.y(), 3+m_deltaX ,te2_1.height());

       QRect pb_1 = m_pushButton->geometry();
       QRect pb_2(pb_1.x()-m_deltaX, pb_1.y(), pb_1.width() ,pb_1.height());

       QRect te1_1 = m_textEditor1->geometry();
       QRect te1_2(te1_1.x(), te1_1.y(), te1_1.width()-m_deltaX, te1_1.height());


        //animation->setDuration(10000);
        animation1->setStartValue(te2_1);
        animation1->setEndValue(te2_2);

        animation2->setStartValue(pb_1);
        animation2->setEndValue(pb_2);

        animation3->setStartValue(te1_1);
        animation3->setEndValue(te1_2);

    }
    animation1->start();
    animation2->start();
    animation3->start();
}

编辑:

我有以下问题:

Q文本编辑 (通过单击按钮)并调整 MyWidget Q文本编辑 恢复其状态(当然,它应该保持关闭状态)。我怎样才能解决这个问题?

请给我一个代码片段。

3 回复 | 直到 11 年前

Gianni 15 年前

Qt's Animation framework

Darqan 15 年前

1) 您可以将按钮替换为垂直布局,将按钮放置在此布局中,最后在按钮下方添加一个垂直间隔符(在同一布局中)。

...

QVBoxLayout* m_buttonLayout = new QVBoxLayout();

m_layout = new QHBoxLayout();
m_layout->addWidget(m_textEditor1);
m_layout->addLayout(m_buttonLayout);
m_layout->addWidget(m_textEditor2);

m_buttonLayout->addWidget(m_pushButton);
m_buttonLayout->addItem( new QSpacerItem(1, 1, QSizePolicy::Minimum, QSizePolicy::Expanding) );

2) 我想你可以(而且应该)设置widget的maximumSize(或者只是maximumWidth)属性的动画,让布局负责计算实际的几何图形。这也会简化你的计算。例如。

QPropertyAnimation *animation1 = new QPropertyAnimation(m_textEditor2, "maximumWidth");
QPropertyAnimation *animation2 = new QPropertyAnimation(m_textEditor, "maximumWidth");

if (isClosing)
{
    int textEdit2_start = m_textEditor2->maximumWidth();
    int textEdit2_end = 0;

    int textEdit_start = m_textEditor->maximumWidth();
    int textEdit_end = textEdit_start + textEdit2_start;

    animation1->setStartValue(textEdit2_start);
    ...
}

另外,现在您根本不必为按钮几何体设置动画(假设已将其设置为固定大小)。

另外,我没有编译代码,所以可能会有一些小错误,但你应该明白。

Narek 15 年前

我想要的是:

class MyWidget : public QWidget
{

    Q_OBJECT

    QTextEdit       *m_textEditor1;
    QTextEdit       *m_textEditor2;
    QPushButton     *m_pushButton;
    QHBoxLayout     *m_layout;
    QVBoxLayout     *m_buttonLayout;

    int              m_deltaX;
    bool             m_isClosed;


public:

    MyWidget(QWidget * parent = 0);
    ~MyWidget(){}

    void resizeEvent( QResizeEvent * event );

private slots:
    void closeOrOpenTextEdit2(bool isClosing);

};

源文件

MyWidget::MyWidget(QWidget * parent):QWidget(parent),m_deltaX(0)
{

  m_pushButton = new QPushButton(this);
  m_pushButton->setText(">");
  m_pushButton->setCheckable(true);
  m_pushButton->setFixedSize(16,16);
  connect(m_pushButton, SIGNAL(clicked(bool)), this, SLOT(closeOrOpenTextEdit2(bool)));

  m_textEditor1 = new QTextEdit(this);
  m_textEditor1->setText("AAAAA AAAAAAAAAAA AAAAAAAAAAA  AAAAAAA AAAAAAAAAAA AAAAAAAAAAA  AA");

  m_textEditor2 = new QTextEdit(this);

  m_buttonLayout = new QVBoxLayout();
  m_buttonLayout->addWidget(m_pushButton);
  m_buttonLayout->addItem( new QSpacerItem(1, 1, QSizePolicy::Minimum, QSizePolicy::Expanding) );


  m_layout = new QHBoxLayout;
  m_layout->addWidget(m_textEditor1, 10);
  m_layout->addSpacing(15);
  m_layout->addLayout(m_buttonLayout);
  m_layout->setSpacing(0);
  m_layout->addWidget(m_textEditor2, 4);

  setLayout(m_layout);
  resize(800,500);
}

void MyWidget::closeOrOpenTextEdit2(bool isClosing)
{
    m_isClosed = isClosing;
    QPropertyAnimation *animation1 = new QPropertyAnimation(m_textEditor2, "maximumWidth");

    if(isClosing) //close the second textEdit
    {
        m_textEditor2->setMaximumWidth(m_textEditor2->width());

        int textEdit2_start = m_textEditor2->maximumWidth();

        m_deltaX = textEdit2_start;
        int textEdit2_end = 3;



        animation1->setDuration(500);
        animation1->setStartValue(textEdit2_start);
        animation1->setEndValue(textEdit2_end);


        m_pushButton->setText("<");

    }
    else //open
    {


        int textEdit2_start = m_textEditor2->maximumWidth();
        int textEdit2_end = m_deltaX;


        animation1->setDuration(500);
        animation1->setStartValue(textEdit2_start);
        animation1->setEndValue(textEdit2_end);


        m_pushButton->setText(">");

    }

    animation1->start();

}


void MyWidget::resizeEvent( QResizeEvent * event )
{
    if(!m_isClosed)
        m_textEditor2->setMaximumWidth( QWIDGETSIZE_MAX );
}