Paint QSplitter : QSplitter « Qt « C++

1. C++
2. Qt
3. QSplitter

Paint QSplitter

  

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#ifndef SPLITTER_H
#define SPLITTER_H

#include <QLinearGradient>
#include <QSplitter>
#include <QSplitterHandle>

class QPaintEvent;


class Splitter : public QSplitter
{
public:
    Splitter(Qt::Orientation orientation, QWidget *parent = 0);

protected:
    QSplitterHandle *createHandle();
};


class SplitterHandle : public QSplitterHandle
{
public:
    SplitterHandle(Qt::Orientation orientation, QSplitter *parent);

protected:
    void paintEvent(QPaintEvent *event);

private:
    QLinearGradient gradient;
};

#endif





#include <QtGui>

#include "splitter.h"

SplitterHandle::SplitterHandle(Qt::Orientation orientation, QSplitter *parent)
    : QSplitterHandle(orientation, parent)
{
    gradient.setColorAt(0.0, Qt::darkGreen);
    gradient.setColorAt(0.25, Qt::white);
    gradient.setColorAt(1.0, Qt::darkGreen);
}


void SplitterHandle::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    if (orientation() == Qt::Horizontal) {
        gradient.setStart(rect().left(), rect().height()/2);
        gradient.setFinalStop(rect().right(), rect().height()/2);
    } else {
        gradient.setStart(rect().width()/2, rect().top());
        gradient.setFinalStop(rect().width()/2, rect().bottom());
    }
    painter.fillRect(event->rect(), QBrush(gradient));
}


Splitter::Splitter(Qt::Orientation orientation, QWidget *parent)
    : QSplitter(orientation, parent)
{
}


QSplitterHandle *Splitter::createHandle()
{
    return new SplitterHandle(orientation(), this);
}






#include <QApplication>
#include <QLabel>

#include "splitter.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Splitter splitter(Qt::Horizontal);
    splitter.addWidget(new QLabel("Hello"));
    splitter.addWidget(new QLabel("World"));
    Splitter verticalSplitter(Qt::Vertical, &splitter);
    verticalSplitter.addWidget(new QLabel("A"));
    verticalSplitter.addWidget(new QLabel("B"));
    splitter.show();
    return app.exec();
}

   
    
  

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