--- a/src/gui/widgets/qabstractslider.cpp Tue Feb 02 00:43:10 2010 +0200
+++ b/src/gui/widgets/qabstractslider.cpp Fri Apr 16 15:50:13 2010 +0300
@@ -1,6 +1,6 @@
/****************************************************************************
**
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
@@ -214,8 +214,8 @@
*/
QAbstractSliderPrivate::QAbstractSliderPrivate()
- : minimum(0), maximum(99), singleStep(1), pageStep(10),
- value(0), position(0), pressValue(-1), offset_accumulated(0), tracking(true),
+ : minimum(0), maximum(99), pageStep(10), value(0), position(0), pressValue(-1),
+ singleStep(1), offset_accumulated(0), tracking(true),
blocktracking(false), pressed(false),
invertedAppearance(false), invertedControls(false),
orientation(Qt::Horizontal), repeatAction(QAbstractSlider::SliderNoAction)
@@ -688,6 +688,52 @@
update();
}
+bool QAbstractSliderPrivate::scrollByDelta(Qt::Orientation orientation, Qt::KeyboardModifiers modifiers, int delta)
+{
+ Q_Q(QAbstractSlider);
+ int stepsToScroll = 0;
+ // in Qt scrolling to the right gives negative values.
+ if (orientation == Qt::Horizontal)
+ delta = -delta;
+ qreal offset = qreal(delta) / 120;
+
+ if ((modifiers & Qt::ControlModifier) || (modifiers & Qt::ShiftModifier)) {
+ // Scroll one page regardless of delta:
+ stepsToScroll = qBound(-pageStep, int(offset * pageStep), pageStep);
+ offset_accumulated = 0;
+ } else {
+ // Calculate how many lines to scroll. Depending on what delta is (and
+ // offset), we might end up with a fraction (e.g. scroll 1.3 lines). We can
+ // only scroll whole lines, so we keep the reminder until next event.
+ qreal stepsToScrollF =
+#ifndef QT_NO_WHEELEVENT
+ QApplication::wheelScrollLines() *
+#endif
+ offset * effectiveSingleStep();
+ // Check if wheel changed direction since last event:
+ if (offset_accumulated != 0 && (offset / offset_accumulated) < 0)
+ offset_accumulated = 0;
+
+ offset_accumulated += stepsToScrollF;
+ stepsToScroll = qBound(-pageStep, int(offset_accumulated), pageStep);
+ offset_accumulated -= int(offset_accumulated);
+ if (stepsToScroll == 0)
+ return false;
+ }
+
+ if (invertedControls)
+ stepsToScroll = -stepsToScroll;
+
+ int prevValue = value;
+ position = overflowSafeAdd(stepsToScroll); // value will be updated by triggerAction()
+ q->triggerAction(QAbstractSlider::SliderMove);
+
+ if (prevValue == value) {
+ offset_accumulated = 0;
+ return false;
+ }
+ return true;
+}
/*!
\reimp
@@ -697,42 +743,11 @@
{
Q_D(QAbstractSlider);
e->ignore();
-
- int stepsToScroll = 0;
- qreal offset = qreal(e->delta()) / 120;
-
- if ((e->modifiers() & Qt::ControlModifier) || (e->modifiers() & Qt::ShiftModifier)) {
- // Scroll one page regardless of delta:
- stepsToScroll = qBound(-d->pageStep, int(offset * d->pageStep), d->pageStep);
- d->offset_accumulated = 0;
- } else {
- // Calculate how many lines to scroll. Depending on what delta is (and
- // offset), we might end up with a fraction (e.g. scroll 1.3 lines). We can
- // only scroll whole lines, so we keep the reminder until next event.
- qreal stepsToScrollF = offset * QApplication::wheelScrollLines() * d->effectiveSingleStep();
- // Check if wheel changed direction since last event:
- if (d->offset_accumulated != 0 && (offset / d->offset_accumulated) < 0)
- d->offset_accumulated = 0;
-
- d->offset_accumulated += stepsToScrollF;
- stepsToScroll = qBound(-d->pageStep, int(d->offset_accumulated), d->pageStep);
- d->offset_accumulated -= int(d->offset_accumulated);
- if (stepsToScroll == 0)
- return;
- }
-
- if (d->invertedControls)
- stepsToScroll = -stepsToScroll;
-
- int prevValue = d->value;
- d->position = d->overflowSafeAdd(stepsToScroll); // value will be updated by triggerAction()
- triggerAction(SliderMove);
-
- if (prevValue == d->value)
- d->offset_accumulated = 0;
- else
+ int delta = e->delta();
+ if (d->scrollByDelta(e->orientation(), e->modifiers(), delta))
e->accept();
}
+
#endif
#ifdef QT_KEYPAD_NAVIGATION
/*!