Moving scroll bar inside QScroll Area

[gmahan]

#include "scrollarea.h"

ScrollArea::ScrollArea(QWidget *parent, QScrollBar *scrollbar) :
QScrollArea(parent)
{
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
setVerticalScrollBar(scrollbar);
setViewportMargins(50, 50, 50, 50);
}

ScrollArea::~ScrollArea()
{

}

void ScrollArea::resizeEvent(QResizeEvent *event)
{
setViewportMargins(0, 0, 50, 0);

QScrollArea::resizeEvent(event);
}

#include "scrollbar.h"

ScrollBar::ScrollBar(Qt::Orientation orientation, QWidget *parent):
QScrollBar(orientation, parent)
{
setMaximumWidth(48);
setMinimumWidth(48);

/* Center Body */
this->setStyleSheet(QString("QScrollBar:vertical {"
"background: #333333;"
"margin: 46px 0 46px 0;"
"}"
/*Slider*/
"QScrollBar::handle:vertical {"
"border: none;"
"background: #4b4b4b;"
"}"

/* Down button */
"QScrollBar::add-line:vertical {"
"background: none;"
"height: 48px;"
"subcontrol-position: bottom;"
"subcontrol-origin: margin;"
"}"
/*Up-button*/
"QScrollBar::sub-line:vertical {"
"background: none;"
"height: 48px;"
"subcontrol-position: top;"
"subcontrol-origin: margin;"
"}"

/* add-page, sub-page subcontrol*/
"QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {"
"background: none;"
"}"

/*up arrow normal state*/
"QScrollBar::up-arrow:vertical {"
"image: url(:/Images/scroll-uparrow);"
"width: 48px;"
"height: 46px;"
"}"

/* down arrow normal state*/
"QScrollBar::down-arrow:vertical {"
"image: url(:/Images/scroll-downarrow);"
"width: 48px;"
"height: 46px;"
"}"

/* up arrow pressed*/
"QScrollBar::up-arrow:vertical:pressed {"
"image: url(:/Images/scroll-uparrow-hit);"
"width: 48px;"
"height: 46px;"
"}"

/* down arrow pressed*/
"QScrollBar::down-arrow:vertical:pressed {"
"image: url(:/Images/scroll-downarrow-hit);"
"width: 48px;"
"height: 46px;"
"}"));


}

ScrollBar::~ScrollBar()
{

}

#include "scrollbar.h"
#include "myscrollbar.h"
#include "scrollwidget.h"
#include "scrollarea.h"

#include <QApplication>
#include <QVBoxLayout>
#include <QSize>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QWidget *mainWindow = new QWidget;
ScrollBar *scrollBar = new ScrollBar(Qt::Vertical, mainWindow);
ScrollArea *scrollArea = new ScrollArea(mainWindow, scrollBar);

QVBoxLayout *layout = new QVBoxLayout;

mainWindow->setWindowTitle("Scroll");
layout->addWidget(scrollArea);
mainWindow->setLayout(layout);
mainWindow->show();

return a.exec();
}



Sorry, for the annoying text format. What is the tag to insert code.

[wysota]

Ok, but in the resize event you were supposed to reposition the scrollbar to where you want it to be. Calling the base class implementation will position the bar exactly the same way as originally.

[gmahan]

Hmm, I guess that is the part I am tripping. What function call do you use to reposition the bar?

[wysota]

Setter of QWidget::geometry property.