diff options
Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativelistview.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qdeclarativelistview.cpp | 287 |
1 files changed, 77 insertions, 210 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativelistview.cpp b/src/declarative/graphicsitems/qdeclarativelistview.cpp index cd8d143..d54bb70 100644 --- a/src/declarative/graphicsitems/qdeclarativelistview.cpp +++ b/src/declarative/graphicsitems/qdeclarativelistview.cpp @@ -139,7 +139,7 @@ public: //---------------------------------------------------------------------------- -class QDeclarativeListViewPrivate : public QDeclarativeFlickablePrivate, private QDeclarativeItemChangeListener +class QDeclarativeListViewPrivate : public QDeclarativeFlickablePrivate { Q_DECLARE_PUBLIC(QDeclarativeListView) @@ -389,11 +389,14 @@ public: } } - void itemGeometryChanged(QDeclarativeItem *, const QRectF &newGeometry, const QRectF &oldGeometry) { - if ((orient == QDeclarativeListView::Vertical && newGeometry.height() != oldGeometry.height()) - || newGeometry.width() != oldGeometry.width()) { - layout(); - fixupPosition(); + void itemGeometryChanged(QDeclarativeItem *item, const QRectF &newGeometry, const QRectF &oldGeometry) { + QDeclarativeFlickablePrivate::itemGeometryChanged(item, newGeometry, oldGeometry); + if (item != viewport) { + if ((orient == QDeclarativeListView::Vertical && newGeometry.height() != oldGeometry.height()) + || newGeometry.width() != oldGeometry.width()) { + layout(); + fixupPosition(); + } } } @@ -425,10 +428,9 @@ public: void updateHeader(); void updateFooter(); void fixupPosition(); - virtual void fixupY(); - virtual void fixupX(); - virtual void flickX(qreal velocity); - virtual void flickY(qreal velocity); + virtual void fixup(AxisData &data, qreal minExtent, qreal maxExtent); + virtual void flick(QDeclarativeFlickablePrivate::AxisData &data, qreal minExtent, qreal maxExtent, qreal vSize, + QDeclarativeTimeLineCallback::Callback fixupCallback, qreal velocity); QDeclarativeGuard<QDeclarativeVisualModel> model; QVariant modelVariant; @@ -1061,52 +1063,16 @@ void QDeclarativeListViewPrivate::fixupPosition() fixupX(); } -void QDeclarativeListViewPrivate::fixupY() +void QDeclarativeListViewPrivate::fixup(AxisData &data, qreal minExtent, qreal maxExtent) { Q_Q(QDeclarativeListView); - if (orient == QDeclarativeListView::Horizontal) - return; - if (!q->yflick() || _moveY.timeLine()) + if ((orient == QDeclarativeListView::Horizontal && &data == &vData) + || (orient == QDeclarativeListView::Vertical && &data == &hData)) return; - int oldDuration = fixupDuration; - fixupDuration = moveReason == Mouse ? fixupDuration : 0; - - if (haveHighlightRange && highlightRange == QDeclarativeListView::StrictlyEnforceRange) { - if (currentItem && currentItem->position() - position() != highlightRangeStart) { - qreal pos = currentItem->position() - highlightRangeStart; - timeline.reset(_moveY); - if (fixupDuration) - timeline.move(_moveY, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration/2); - else - _moveY.setValue(-pos); - vTime = timeline.time(); - } - } else if (snapMode != QDeclarativeListView::NoSnap) { - if (FxListItem *item = snapItemAt(position())) { - qreal pos = qMin(item->position() - highlightRangeStart, -q->maxYExtent()); - qreal dist = qAbs(_moveY + pos); - if (dist > 0) { - timeline.reset(_moveY); - if (fixupDuration) - timeline.move(_moveY, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration/2); - else - _moveY.setValue(-pos); - vTime = timeline.time(); - } - } - } else { - QDeclarativeFlickablePrivate::fixupY(); - } - fixupDuration = oldDuration; -} - -void QDeclarativeListViewPrivate::fixupX() -{ - Q_Q(QDeclarativeListView); - if (orient == QDeclarativeListView::Vertical) - return; - if (!q->xflick() || _moveX.timeLine()) + if ((&data == &vData && !q->yflick()) + || (&data == &hData && !q->xflick()) + || data.move.timeLine()) return; int oldDuration = fixupDuration; @@ -1115,161 +1081,62 @@ void QDeclarativeListViewPrivate::fixupX() if (haveHighlightRange && highlightRange == QDeclarativeListView::StrictlyEnforceRange) { if (currentItem && currentItem->position() - position() != highlightRangeStart) { qreal pos = currentItem->position() - highlightRangeStart; - timeline.reset(_moveX); + timeline.reset(data.move); if (fixupDuration) - timeline.move(_moveX, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration); + timeline.move(data.move, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration/2); else - _moveX.setValue(-pos); + data.move.setValue(-pos); vTime = timeline.time(); } } else if (snapMode != QDeclarativeListView::NoSnap) { if (FxListItem *item = snapItemAt(position())) { - qreal pos = qMin(item->position() - highlightRangeStart, -q->maxXExtent()); - qreal dist = qAbs(_moveX + pos); + qreal pos = qMin(item->position() - highlightRangeStart, -maxExtent); + qreal dist = qAbs(data.move + pos); if (dist > 0) { - timeline.reset(_moveX); + timeline.reset(data.move); if (fixupDuration) - timeline.move(_moveX, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration); + timeline.move(data.move, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration/2); else - _moveX.setValue(-pos); + data.move.setValue(-pos); vTime = timeline.time(); } } } else { - QDeclarativeFlickablePrivate::fixupX(); + QDeclarativeFlickablePrivate::fixup(data, minExtent, maxExtent); } fixupDuration = oldDuration; } -void QDeclarativeListViewPrivate::flickX(qreal velocity) -{ - Q_Q(QDeclarativeListView); - - moveReason = Mouse; - if ((!haveHighlightRange || highlightRange != QDeclarativeListView::StrictlyEnforceRange) && snapMode == QDeclarativeListView::NoSnap) { - QDeclarativeFlickablePrivate::flickX(velocity); - return; - } - qreal maxDistance = -1; - const qreal maxX = q->maxXExtent(); - const qreal minX = q->minXExtent(); - // -ve velocity means list is moving up - if (velocity > 0) { - if (snapMode == QDeclarativeListView::SnapOneItem) { - if (FxListItem *item = firstVisibleItem()) - maxDistance = qAbs(item->position() + _moveX.value()); - } else if (_moveX.value() < minX) { - maxDistance = qAbs(minX -_moveX.value() + (overShoot?overShootDistance(velocity, q->width()):0)); - } - if (snapMode != QDeclarativeListView::SnapToItem && highlightRange != QDeclarativeListView::StrictlyEnforceRange) - flickTargetX = minX; - } else { - if (snapMode == QDeclarativeListView::SnapOneItem) { - if (FxListItem *item = nextVisibleItem()) - maxDistance = qAbs(item->position() + _moveX.value()); - } else if (_moveX.value() > maxX) { - maxDistance = qAbs(maxX - _moveX.value()) + (overShoot?overShootDistance(velocity, q->width()):0); - } - if (snapMode != QDeclarativeListView::SnapToItem && highlightRange != QDeclarativeListView::StrictlyEnforceRange) - flickTargetX = maxX; - } - if (maxDistance > 0 && (snapMode != QDeclarativeListView::NoSnap || highlightRange == QDeclarativeListView::StrictlyEnforceRange)) { - // These modes require the list to stop exactly on an item boundary. - // The initial flick will estimate the boundary to stop on. - // Since list items can have variable sizes, the boundary will be - // reevaluated and adjusted as we approach the boundary. - qreal v = velocity; - if (maxVelocity != -1 && maxVelocity < qAbs(v)) { - if (v < 0) - v = -maxVelocity; - else - v = maxVelocity; - } - if (!flicked) { - // the initial flick - estimate boundary - qreal accel = deceleration; - qreal v2 = v * v; - qreal maxAccel = v2 / (2.0f * maxDistance); - if (maxAccel < accel) { - qreal dist = v2 / (accel * 2.0); - if (v > 0) - dist = -dist; - flickTargetX = -snapPosAt(-(_moveX.value() - highlightRangeStart) + dist) + highlightRangeStart; - dist = -flickTargetX + _moveX.value(); - accel = v2 / (2.0f * qAbs(dist)); - overshootDist = 0.0; - } else { - flickTargetX = velocity > 0 ? minX : maxX; - overshootDist = overShoot ? overShootDistance(v, q->width()) : 0; - } - timeline.reset(_moveX); - timeline.accel(_moveX, v, accel, maxDistance + overshootDist); - timeline.callback(QDeclarativeTimeLineCallback(&_moveX, fixupX_callback, this)); - flicked = true; - emit q->flickingChanged(); - emit q->flickStarted(); - correctFlick = true; - } else { - // reevaluate the target boundary. - qreal newtarget = flickTargetX; - if (snapMode != QDeclarativeListView::NoSnap || highlightRange == QDeclarativeListView::StrictlyEnforceRange) - newtarget = -snapPosAt(-(flickTargetX - highlightRangeStart)) + highlightRangeStart; - if (velocity < 0 && newtarget < maxX) - newtarget = maxX; - else if (velocity > 0 && newtarget > minX) - newtarget = minX; - if (newtarget == flickTargetX) // boundary unchanged - nothing to do - return; - flickTargetX = newtarget; - qreal dist = -newtarget + _moveX.value(); - if ((v < 0 && dist < 0) || (v > 0 && dist > 0)) { - correctFlick = false; - timeline.reset(_moveX); - fixupX(); - return; - } - timeline.reset(_moveX); - timeline.accelDistance(_moveX, v, -dist + (v < 0 ? -overshootDist : overshootDist)); - timeline.callback(QDeclarativeTimeLineCallback(&_moveX, fixupX_callback, this)); - } - } else { - correctFlick = false; - timeline.reset(_moveX); - fixupX(); - } -} - -void QDeclarativeListViewPrivate::flickY(qreal velocity) +void QDeclarativeListViewPrivate::flick(AxisData &data, qreal minExtent, qreal maxExtent, qreal vSize, + QDeclarativeTimeLineCallback::Callback fixupCallback, qreal velocity) { Q_Q(QDeclarativeListView); moveReason = Mouse; if ((!haveHighlightRange || highlightRange != QDeclarativeListView::StrictlyEnforceRange) && snapMode == QDeclarativeListView::NoSnap) { - QDeclarativeFlickablePrivate::flickY(velocity); + QDeclarativeFlickablePrivate::flick(data, minExtent, maxExtent, vSize, fixupCallback, velocity); return; } qreal maxDistance = -1; - const qreal maxY = q->maxYExtent(); - const qreal minY = q->minYExtent(); // -ve velocity means list is moving up if (velocity > 0) { if (snapMode == QDeclarativeListView::SnapOneItem) { if (FxListItem *item = firstVisibleItem()) - maxDistance = qAbs(item->position() + _moveY.value()); - } else if (_moveY.value() < minY) { - maxDistance = qAbs(minY -_moveY.value() + (overShoot?overShootDistance(velocity, q->height()):0)); + maxDistance = qAbs(item->position() + data.move.value()); + } else if (data.move.value() < minExtent) { + maxDistance = qAbs(minExtent - data.move.value() + (overShoot?overShootDistance(velocity, vSize):0)); } if (snapMode != QDeclarativeListView::SnapToItem && highlightRange != QDeclarativeListView::StrictlyEnforceRange) - flickTargetY = minY; + data.flickTarget = minExtent; } else { if (snapMode == QDeclarativeListView::SnapOneItem) { if (FxListItem *item = nextVisibleItem()) - maxDistance = qAbs(item->position() + _moveY.value()); - } else if (_moveY.value() > maxY) { - maxDistance = qAbs(maxY - _moveY.value()) + (overShoot?overShootDistance(velocity, q->height()):0); + maxDistance = qAbs(item->position() + data.move.value()); + } else if (data.move.value() > maxExtent) { + maxDistance = qAbs(maxExtent - data.move.value()) + (overShoot?overShootDistance(velocity, vSize):0); } if (snapMode != QDeclarativeListView::SnapToItem && highlightRange != QDeclarativeListView::StrictlyEnforceRange) - flickTargetY = maxY; + data.flickTarget = maxExtent; } if (maxDistance > 0 && (snapMode != QDeclarativeListView::NoSnap || highlightRange == QDeclarativeListView::StrictlyEnforceRange)) { // These modes require the list to stop exactly on an item boundary. @@ -1292,48 +1159,48 @@ void QDeclarativeListViewPrivate::flickY(qreal velocity) qreal dist = v2 / (accel * 2.0); if (v > 0) dist = -dist; - flickTargetY = -snapPosAt(-(_moveY.value() - highlightRangeStart) + dist) + highlightRangeStart; - dist = -flickTargetY + _moveY.value(); + data.flickTarget = -snapPosAt(-(data.move.value() - highlightRangeStart) + dist) + highlightRangeStart; + dist = -data.flickTarget + data.move.value(); accel = v2 / (2.0f * qAbs(dist)); overshootDist = 0.0; } else { - flickTargetY = velocity > 0 ? minY : maxY; - overshootDist = overShoot ? overShootDistance(v, q->height()) : 0; + data.flickTarget = velocity > 0 ? minExtent : maxExtent; + overshootDist = overShoot ? overShootDistance(v, vSize) : 0; } - timeline.reset(_moveY); - timeline.accel(_moveY, v, accel, maxDistance + overshootDist); - timeline.callback(QDeclarativeTimeLineCallback(&_moveY, fixupY_callback, this)); + timeline.reset(data.move); + timeline.accel(data.move, v, accel, maxDistance + overshootDist); + timeline.callback(QDeclarativeTimeLineCallback(&data.move, fixupCallback, this)); flicked = true; emit q->flickingChanged(); emit q->flickStarted(); correctFlick = true; } else { // reevaluate the target boundary. - qreal newtarget = flickTargetY; + qreal newtarget = data.flickTarget; if (snapMode != QDeclarativeListView::NoSnap || highlightRange == QDeclarativeListView::StrictlyEnforceRange) - newtarget = -snapPosAt(-(flickTargetY - highlightRangeStart)) + highlightRangeStart; - if (velocity < 0 && newtarget < maxY) - newtarget = maxY; - else if (velocity > 0 && newtarget > minY) - newtarget = minY; - if (newtarget == flickTargetY) // boundary unchanged - nothing to do + newtarget = -snapPosAt(-(data.flickTarget - highlightRangeStart)) + highlightRangeStart; + if (velocity < 0 && newtarget < maxExtent) + newtarget = maxExtent; + else if (velocity > 0 && newtarget > minExtent) + newtarget = minExtent; + if (newtarget == data.flickTarget) // boundary unchanged - nothing to do return; - flickTargetY = newtarget; - qreal dist = -newtarget + _moveY.value(); + data.flickTarget = newtarget; + qreal dist = -newtarget + data.move.value(); if ((v < 0 && dist < 0) || (v > 0 && dist > 0)) { correctFlick = false; - timeline.reset(_moveY); - fixupY(); + timeline.reset(data.move); + fixup(data, minExtent, maxExtent); return; } - timeline.reset(_moveY); - timeline.accelDistance(_moveY, v, -dist + (v < 0 ? -overshootDist : overshootDist)); - timeline.callback(QDeclarativeTimeLineCallback(&_moveY, fixupY_callback, this)); + timeline.reset(data.move); + timeline.accelDistance(data.move, v, -dist + (v < 0 ? -overshootDist : overshootDist)); + timeline.callback(QDeclarativeTimeLineCallback(&data.move, fixupCallback, this)); } } else { correctFlick = false; - timeline.reset(_moveY); - fixupY(); + timeline.reset(data.move); + fixup(data, minExtent, maxExtent); } } @@ -2107,33 +1974,33 @@ void QDeclarativeListView::viewportMoved() // Near an end and it seems that the extent has changed? // Recalculate the flick so that we don't end up in an odd position. if (yflick()) { - if (d->velocityY > 0) { + if (d->vData.velocity > 0) { const qreal minY = minYExtent(); - if ((minY - d->_moveY.value() < height()/2 || d->flickTargetY - d->_moveY.value() < height()/2) - && minY != d->flickTargetY) - d->flickY(-d->verticalVelocity.value()); + if ((minY - d->vData.move.value() < height()/2 || d->vData.flickTarget - d->vData.move.value() < height()/2) + && minY != d->vData.flickTarget) + d->flickY(-d->vData.smoothVelocity.value()); d->bufferMode = QDeclarativeListViewPrivate::BufferBefore; - } else if (d->velocityY < 0) { + } else if (d->vData.velocity < 0) { const qreal maxY = maxYExtent(); - if ((d->_moveY.value() - maxY < height()/2 || d->_moveY.value() - d->flickTargetY < height()/2) - && maxY != d->flickTargetY) - d->flickY(-d->verticalVelocity.value()); + if ((d->vData.move.value() - maxY < height()/2 || d->vData.move.value() - d->vData.flickTarget < height()/2) + && maxY != d->vData.flickTarget) + d->flickY(-d->vData.smoothVelocity.value()); d->bufferMode = QDeclarativeListViewPrivate::BufferAfter; } } if (xflick()) { - if (d->velocityX > 0) { + if (d->hData.velocity > 0) { const qreal minX = minXExtent(); - if ((minX - d->_moveX.value() < height()/2 || d->flickTargetX - d->_moveX.value() < height()/2) - && minX != d->flickTargetX) - d->flickX(-d->horizontalVelocity.value()); + if ((minX - d->hData.move.value() < width()/2 || d->hData.flickTarget - d->hData.move.value() < width()/2) + && minX != d->hData.flickTarget) + d->flickX(-d->hData.smoothVelocity.value()); d->bufferMode = QDeclarativeListViewPrivate::BufferBefore; - } else if (d->velocityX < 0) { + } else if (d->hData.velocity < 0) { const qreal maxX = maxXExtent(); - if ((d->_moveX.value() - maxX < height()/2 || d->_moveX.value() - d->flickTargetX < height()/2) - && maxX != d->flickTargetX) - d->flickX(-d->horizontalVelocity.value()); + if ((d->hData.move.value() - maxX < width()/2 || d->hData.move.value() - d->hData.flickTarget < width()/2) + && maxX != d->hData.flickTarget) + d->flickX(-d->hData.smoothVelocity.value()); d->bufferMode = QDeclarativeListViewPrivate::BufferAfter; } } |