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// (c) 2000 Peter Putzer
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#include <tqscrollbar.h>
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#include <tqlayout.h>
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#include <tqstyle.h>
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#include <kdebug.h>
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#include <kdialog.h>
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#include <tdeapplication.h>
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#include "kscroller.h"
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class KScroller::KScrollerPrivate
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{
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public:
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KScrollerPrivate ()
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: setCornerWidget (0L)
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{
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}
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~KScrollerPrivate () {}
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TQWidget* setCornerWidget;
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};
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KScroller::KScroller (TQWidget* parent, const char* name)
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: TQFrame (parent, name),
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d (new KScrollerPrivate()),
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mVertical (new TQScrollBar (Qt::Vertical, this)),
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mHorizontal (new TQScrollBar (Qt::Horizontal, this)),
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mCornerWidget (new TQWidget (this)),
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mContent (0L),
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mVerticalOld (0),
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mHorizontalOld (0)
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{
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mCornerWidget->hide();
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mVertical->hide();
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mHorizontal->hide();
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connect (mVertical, TQT_SIGNAL (valueChanged (int)),
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this, TQT_SLOT (scrollVertical (int)));
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connect (mHorizontal, TQT_SIGNAL (valueChanged (int)),
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this, TQT_SLOT (scrollHorizontal (int)));
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}
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KScroller::~KScroller ()
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{
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delete d;
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}
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void KScroller::setContent (TQWidget* content)
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{
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delete mContent;
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mContent = content;
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updateScrollBars();
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}
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void KScroller::setCornerWidget (TQWidget* corner)
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{
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delete mCornerWidget;
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mCornerWidget = d->setCornerWidget = corner;
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updateScrollBars();
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}
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TQWidget* KScroller::cornerWidget ()
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{
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return d->setCornerWidget;
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}
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void KScroller::resizeEvent (TQResizeEvent* e)
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{
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TQFrame::resizeEvent (e);
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updateScrollBars();
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}
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TQSize KScroller::minimumSizeHint() const
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{
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TQSize size = sizeHint();
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if (size.width() > 300)
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size.setWidth(300);
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return size;
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}
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TQSize KScroller::sizeHint() const
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{
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TQSize size = mContent->minimumSize();
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int extra = kapp->style().pixelMetric( TQStyle::PM_ScrollBarExtent, 0 );
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size += TQSize( extra, extra );
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return size;
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}
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void KScroller::updateScrollBars ()
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{
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int w = width();
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int h = height();
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TQSize cs = mContent->minimumSize();
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setupVertical ( cs.width(), cs.height(), w, h);
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setupHorizontal ( cs.width(), cs.height(), w, h);
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mContent->resize (cs);
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setupCornerWidget (w, h);
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}
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void KScroller::setupHorizontal (int cw, int, int w, int h)
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{
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mHorizontal->setValue (0);
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mHorizontalOld = 0;
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if (cw > w)
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{
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int extra = kapp->style().pixelMetric( TQStyle::PM_ScrollBarExtent, 0 );
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if (!mVertical->isHidden())
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w -= extra;
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mHorizontal->setRange (0, cw - w);
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mHorizontal->setPageStep (w);
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mHorizontal->setLineStep (25);
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mHorizontal->setGeometry (0, h - extra, w, extra);
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mHorizontal->raise();
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mHorizontal->show();
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}
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else
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{
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mHorizontal->hide();
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}
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}
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void KScroller::setupVertical (int, int ch, int w, int h)
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{
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mVertical->setValue (0);
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mVerticalOld = 0;
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if (ch > h)
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{
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int extra = kapp->style().pixelMetric( TQStyle::PM_ScrollBarExtent, 0 );
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mVertical->setRange (0, ch - h);
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mVertical->setPageStep (h);
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mVertical->setLineStep (25);
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mVertical->setGeometry (w - extra, 0, extra, h);
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mVertical->raise();
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mVertical->show();
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}
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else
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{
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mVertical->hide();
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}
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}
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void KScroller::scrollVertical (int value)
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{
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int amount = value - mVerticalOld;
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mVerticalOld = value;
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mContent->move (mContent->x(), mContent->y() - amount);
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}
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void KScroller::scrollHorizontal (int value)
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{
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int amount = value - mHorizontalOld;
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mHorizontalOld = value;
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mContent->move (mContent->x() - amount, mContent->y());
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}
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void KScroller::setupCornerWidget (int w, int h)
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{
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if (!mVertical->isHidden() && !mHorizontal->isHidden())
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{
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int extra = kapp->style().pixelMetric( TQStyle::PM_ScrollBarExtent, 0 );
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mCornerWidget->raise();
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mCornerWidget->setGeometry (w - extra, h - extra, extra, extra);
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mCornerWidget->show();
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}
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else
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{
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mCornerWidget->hide();
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}
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}
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#include "kscroller.moc"
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