diff options
Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativegridview.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qdeclarativegridview.cpp | 605 |
1 files changed, 470 insertions, 135 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativegridview.cpp b/src/declarative/graphicsitems/qdeclarativegridview.cpp index dc4196d..546f75e 100644 --- a/src/declarative/graphicsitems/qdeclarativegridview.cpp +++ b/src/declarative/graphicsitems/qdeclarativegridview.cpp @@ -68,19 +68,60 @@ public: } ~FxGridItem() {} - qreal rowPos() const { return (view->flow() == QDeclarativeGridView::LeftToRight ? item->y() : item->x()); } - qreal colPos() const { return (view->flow() == QDeclarativeGridView::LeftToRight ? item->x() : item->y()); } + qreal rowPos() const { + qreal rowPos = 0; + if (view->flow() == QDeclarativeGridView::LeftToRight) { + rowPos = item->y(); + } else { + if (view->effectiveLayoutDirection() == Qt::RightToLeft) + rowPos = -view->cellWidth()-item->x(); + else + rowPos = item->x(); + } + return rowPos; + } + qreal colPos() const { + qreal colPos = 0; + if (view->flow() == QDeclarativeGridView::LeftToRight) { + if (view->effectiveLayoutDirection() == Qt::RightToLeft) { + int colSize = view->cellWidth(); + int columns = view->width()/colSize; + colPos = colSize * (columns-1) - item->x(); + } else { + colPos = item->x(); + } + } else { + colPos = item->y(); + } + + return colPos; + } + qreal endRowPos() const { - return view->flow() == QDeclarativeGridView::LeftToRight - ? item->y() + view->cellHeight() - 1 - : item->x() + view->cellWidth() - 1; + if (view->flow() == QDeclarativeGridView::LeftToRight) { + return item->y() + view->cellHeight() - 1; + } else { + if (view->effectiveLayoutDirection() == Qt::RightToLeft) + return -item->x() - 1; + else + return item->x() + view->cellWidth() - 1; + } } void setPosition(qreal col, qreal row) { - if (view->flow() == QDeclarativeGridView::LeftToRight) { - item->setPos(QPointF(col, row)); + if (view->effectiveLayoutDirection() == Qt::RightToLeft) { + if (view->flow() == QDeclarativeGridView::LeftToRight) { + int columns = view->width()/view->cellWidth(); + item->setPos(QPointF((view->cellWidth() * (columns-1) - col), row)); + } else { + item->setPos(QPointF(-view->cellWidth()-row, col)); + } } else { - item->setPos(QPointF(row, col)); + if (view->flow() == QDeclarativeGridView::LeftToRight) + item->setPos(QPointF(col, row)); + else + item->setPos(QPointF(row, col)); } + } bool contains(qreal x, qreal y) const { return (x >= item->x() && x < item->x() + view->cellWidth() && @@ -101,10 +142,12 @@ class QDeclarativeGridViewPrivate : public QDeclarativeFlickablePrivate public: QDeclarativeGridViewPrivate() - : currentItem(0), flow(QDeclarativeGridView::LeftToRight) + : currentItem(0), layoutDirection(Qt::LeftToRight), flow(QDeclarativeGridView::LeftToRight) , visibleIndex(0) , currentIndex(-1) , cellWidth(100), cellHeight(100), columns(1), requestedIndex(-1), itemCount(0) - , highlightRangeStart(0), highlightRangeEnd(0), highlightRange(QDeclarativeGridView::NoHighlightRange) + , highlightRangeStart(0), highlightRangeEnd(0) + , highlightRangeStartValid(false), highlightRangeEndValid(false) + , highlightRange(QDeclarativeGridView::NoHighlightRange) , highlightComponent(0), highlight(0), trackedItem(0) , moveReason(Other), buffer(0), highlightXAnimator(0), highlightYAnimator(0) , highlightMoveDuration(150) @@ -144,35 +187,71 @@ public: return 0; } + bool isRightToLeftTopToBottom() const { + Q_Q(const QDeclarativeGridView); + return flow == QDeclarativeGridView::TopToBottom && q->effectiveLayoutDirection() == Qt::RightToLeft; + } + + void regenerate() { + Q_Q(QDeclarativeGridView); + if (q->isComponentComplete()) { + clear(); + updateGrid(); + q->refill(); + updateCurrent(currentIndex); + } + } + + void mirrorChange() { + Q_Q(QDeclarativeGridView); + regenerate(); + emit q->effectiveLayoutDirectionChanged(); + } + qreal position() const { Q_Q(const QDeclarativeGridView); return flow == QDeclarativeGridView::LeftToRight ? q->contentY() : q->contentX(); } void setPosition(qreal pos) { Q_Q(QDeclarativeGridView); - if (flow == QDeclarativeGridView::LeftToRight) + if (flow == QDeclarativeGridView::LeftToRight) { q->QDeclarativeFlickable::setContentY(pos); - else - q->QDeclarativeFlickable::setContentX(pos); + q->QDeclarativeFlickable::setContentX(0); + } else { + if (q->effectiveLayoutDirection() == Qt::LeftToRight) + q->QDeclarativeFlickable::setContentX(pos); + else + q->QDeclarativeFlickable::setContentX(-pos-size()); + q->QDeclarativeFlickable::setContentY(0); + } } int size() const { Q_Q(const QDeclarativeGridView); return flow == QDeclarativeGridView::LeftToRight ? q->height() : q->width(); } - qreal startPosition() const { + qreal originPosition() const { qreal pos = 0; if (!visibleItems.isEmpty()) pos = visibleItems.first()->rowPos() - visibleIndex / columns * rowSize(); return pos; } - qreal endPosition() const { + qreal lastPosition() const { qreal pos = 0; if (model && model->count()) pos = rowPosAt(model->count() - 1) + rowSize(); return pos; } + qreal startPosition() const { + return isRightToLeftTopToBottom() ? -lastPosition()+1 : originPosition(); + } + + qreal endPosition() const { + return isRightToLeftTopToBottom() ? -originPosition()+1 : lastPosition(); + + } + bool isValid() const { return model && model->count() && model->isValid(); } @@ -227,7 +306,7 @@ public: } FxGridItem *firstVisibleItem() const { - const qreal pos = position(); + const qreal pos = isRightToLeftTopToBottom() ? -position()-size() : position(); for (int i = 0; i < visibleItems.count(); ++i) { FxGridItem *item = visibleItems.at(i); if (item->index != -1 && item->endRowPos() > pos) @@ -237,15 +316,12 @@ public: } int lastVisibleIndex() const { - int lastIndex = -1; - for (int i = visibleItems.count()-1; i >= 0; --i) { - FxGridItem *gridItem = visibleItems.at(i); - if (gridItem->index != -1) { - lastIndex = gridItem->index; - break; - } + for (int i = 0; i < visibleItems.count(); ++i) { + FxGridItem *item = visibleItems.at(i); + if (item->index != -1) + return item->index; } - return lastIndex; + return -1; } // Map a model index to visibleItems list index. @@ -271,8 +347,15 @@ public: pos += rowSize()/2; snapPos = visibleItems.first()->rowPos() - visibleIndex / columns * rowSize(); snapPos = pos - fmodf(pos - snapPos, qreal(rowSize())); - qreal maxExtent = flow == QDeclarativeGridView::LeftToRight ? -q->maxYExtent() : -q->maxXExtent(); - qreal minExtent = flow == QDeclarativeGridView::LeftToRight ? -q->minYExtent() : -q->minXExtent(); + qreal maxExtent; + qreal minExtent; + if (isRightToLeftTopToBottom()) { + maxExtent = q->minXExtent(); + minExtent = q->maxXExtent(); + } else { + maxExtent = flow == QDeclarativeGridView::LeftToRight ? -q->maxYExtent() : -q->maxXExtent(); + minExtent = flow == QDeclarativeGridView::LeftToRight ? -q->minYExtent() : -q->minXExtent(); + } if (snapPos > maxExtent) snapPos = maxExtent; if (snapPos < minExtent) @@ -363,6 +446,7 @@ public: QList<FxGridItem*> visibleItems; QHash<QDeclarativeItem*,int> unrequestedItems; FxGridItem *currentItem; + Qt::LayoutDirection layoutDirection; QDeclarativeGridView::Flow flow; int visibleIndex; int currentIndex; @@ -373,6 +457,8 @@ public: int itemCount; qreal highlightRangeStart; qreal highlightRangeEnd; + bool highlightRangeStartValid; + bool highlightRangeEndValid; QDeclarativeGridView::HighlightRangeMode highlightRange; QDeclarativeComponent *highlightComponent; FxGridItem *highlight; @@ -554,7 +640,7 @@ void QDeclarativeGridViewPrivate::refill(qreal from, qreal to, bool doBuffer) if (!lazyRelease || !changed || deferredRelease) { // avoid destroying items in the same frame that we create while (visibleItems.count() > 1 && (item = visibleItems.first()) - && item->endRowPos() < bufferFrom - rowSize()*(item->colPos()/colSize()+1)/(columns+1)) { + && item->rowPos()+rowSize()-1 < bufferFrom - rowSize()*(item->colPos()/colSize()+1)/(columns+1)) { if (item->attached->delayRemove()) break; // qDebug() << "refill: remove first" << visibleIndex << "top end pos" << item->endRowPos(); @@ -596,12 +682,14 @@ void QDeclarativeGridViewPrivate::refill(qreal from, qreal to, bool doBuffer) void QDeclarativeGridViewPrivate::updateGrid() { Q_Q(QDeclarativeGridView); + columns = (int)qMax((flow == QDeclarativeGridView::LeftToRight ? q->width() : q->height()) / colSize(), qreal(1.)); if (isValid()) { if (flow == QDeclarativeGridView::LeftToRight) q->setContentHeight(endPosition() - startPosition()); else - q->setContentWidth(endPosition() - startPosition()); + q->setContentWidth(lastPosition() - originPosition()); + setPosition(0); } } @@ -669,10 +757,14 @@ void QDeclarativeGridViewPrivate::updateUnrequestedPositions() { QHash<QDeclarativeItem*,int>::const_iterator it; for (it = unrequestedItems.begin(); it != unrequestedItems.end(); ++it) { + QDeclarativeItem *item = it.key(); if (flow == QDeclarativeGridView::LeftToRight) { - it.key()->setPos(QPointF(colPosAt(*it), rowPosAt(*it))); + item->setPos(QPointF(colPosAt(*it), rowPosAt(*it))); } else { - it.key()->setPos(QPointF(rowPosAt(*it), colPosAt(*it))); + if (isRightToLeftTopToBottom()) + item->setPos(QPointF(-rowPosAt(*it)-item->width(), colPosAt(*it))); + else + item->setPos(QPointF(rowPosAt(*it), colPosAt(*it))); } } } @@ -837,23 +929,30 @@ void QDeclarativeGridViewPrivate::updateFooter() } } if (footer) { + qreal colOffset = 0; + qreal rowOffset; + if (isRightToLeftTopToBottom()) { + rowOffset = footer->item->width()-cellWidth; + } else { + rowOffset = 0; + if (q->effectiveLayoutDirection() == Qt::RightToLeft) + colOffset = footer->item->width()-cellWidth; + } if (visibleItems.count()) { - qreal endPos = endPosition(); + qreal endPos = lastPosition(); if (lastVisibleIndex() == model->count()-1) { - footer->setPosition(0, endPos); + footer->setPosition(colOffset, endPos + rowOffset); } else { - qreal visiblePos = position() + q->height(); - if (endPos <= visiblePos || footer->endRowPos() < endPos) - footer->setPosition(0, endPos); + qreal visiblePos = isRightToLeftTopToBottom() ? -position() : position() + size(); + if (endPos <= visiblePos || footer->endRowPos() < endPos + rowOffset) + footer->setPosition(colOffset, endPos + rowOffset); } } else { qreal endPos = 0; if (header) { - endPos += flow == QDeclarativeGridView::LeftToRight - ? header->item->height() - : header->item->width(); + endPos += flow == QDeclarativeGridView::LeftToRight ? header->item->height() : header->item->width(); } - footer->setPosition(0, endPos); + footer->setPosition(colOffset, endPos); } } } @@ -883,16 +982,27 @@ void QDeclarativeGridViewPrivate::updateHeader() } } if (header) { + qreal colOffset = 0; + qreal rowOffset; + if (isRightToLeftTopToBottom()) { + rowOffset = -cellWidth; + } else { + rowOffset = -headerSize(); + if (q->effectiveLayoutDirection() == Qt::RightToLeft) + colOffset = header->item->width()-cellWidth; + } if (visibleItems.count()) { - qreal startPos = startPosition(); + qreal startPos = originPosition(); if (visibleIndex == 0) { - header->setPosition(0, startPos - headerSize()); + header->setPosition(colOffset, startPos + rowOffset); } else { - if (position() <= startPos || header->rowPos() > startPos - headerSize()) - header->setPosition(0, startPos - headerSize()); + qreal tempPos = isRightToLeftTopToBottom() ? -position()-size() : position(); + qreal headerPos = isRightToLeftTopToBottom() ? header->rowPos() + cellWidth - headerSize() : header->rowPos(); + if (tempPos <= startPos || headerPos > startPos + rowOffset) + header->setPosition(colOffset, startPos + rowOffset); } } else { - header->setPosition(0, 0); + header->setPosition(colOffset, 0); } } } @@ -912,76 +1022,107 @@ void QDeclarativeGridViewPrivate::fixup(AxisData &data, qreal minExtent, qreal m || (flow == QDeclarativeGridView::LeftToRight && &data == &hData)) return; - int oldDuration = fixupDuration; - fixupDuration = moveReason == Mouse ? fixupDuration : 0; + fixupMode = moveReason == Mouse ? fixupMode : Immediate; + + qreal highlightStart; + qreal highlightEnd; + qreal viewPos; + if (isRightToLeftTopToBottom()) { + // Handle Right-To-Left exceptions + viewPos = -position()-size(); + highlightStart = highlightRangeStartValid ? size()-highlightRangeEnd : highlightRangeStart; + highlightEnd = highlightRangeEndValid ? size()-highlightRangeStart : highlightRangeEnd; + } else { + viewPos = position(); + highlightStart = highlightRangeStart; + highlightEnd = highlightRangeEnd; + } if (snapMode != QDeclarativeGridView::NoSnap) { - FxGridItem *topItem = snapItemAt(position()+highlightRangeStart); - FxGridItem *bottomItem = snapItemAt(position()+highlightRangeEnd); + qreal tempPosition = isRightToLeftTopToBottom() ? -position()-size() : position(); + FxGridItem *topItem = snapItemAt(tempPosition+highlightStart); + FxGridItem *bottomItem = snapItemAt(tempPosition+highlightEnd); qreal pos; if (topItem && bottomItem && haveHighlightRange && highlightRange == QDeclarativeGridView::StrictlyEnforceRange) { - qreal topPos = qMin(topItem->rowPos() - highlightRangeStart, -maxExtent); - qreal bottomPos = qMax(bottomItem->rowPos() - highlightRangeEnd, -minExtent); + qreal topPos = qMin(topItem->rowPos() - highlightStart, -maxExtent); + qreal bottomPos = qMax(bottomItem->rowPos() - highlightEnd, -minExtent); pos = qAbs(data.move + topPos) < qAbs(data.move + bottomPos) ? topPos : bottomPos; } else if (topItem) { - if (topItem->index == 0 && header && position()+highlightRangeStart < header->rowPos()+headerSize()/2) - pos = header->rowPos() - highlightRangeStart; - else - pos = qMax(qMin(topItem->rowPos() - highlightRangeStart, -maxExtent), -minExtent); + qreal headerPos = 0; + if (header) + headerPos = isRightToLeftTopToBottom() ? header->rowPos() + cellWidth - headerSize() : header->rowPos(); + if (topItem->index == 0 && header && tempPosition+highlightStart < headerPos+headerSize()/2) { + pos = isRightToLeftTopToBottom() ? - headerPos + highlightStart - size() : headerPos - highlightStart; + } else { + if (isRightToLeftTopToBottom()) + pos = qMax(qMin(-topItem->rowPos() + highlightStart - size(), -maxExtent), -minExtent); + else + pos = qMax(qMin(topItem->rowPos() - highlightStart, -maxExtent), -minExtent); + } } else if (bottomItem) { - pos = qMax(qMin(bottomItem->rowPos() - highlightRangeStart, -maxExtent), -minExtent); + if (isRightToLeftTopToBottom()) + pos = qMax(qMin(-bottomItem->rowPos() + highlightStart - size(), -maxExtent), -minExtent); + else + pos = qMax(qMin(bottomItem->rowPos() - highlightStart, -maxExtent), -minExtent); } else { QDeclarativeFlickablePrivate::fixup(data, minExtent, maxExtent); - fixupDuration = oldDuration; return; } if (currentItem && haveHighlightRange && highlightRange == QDeclarativeGridView::StrictlyEnforceRange) { updateHighlight(); qreal currPos = currentItem->rowPos(); - if (pos < currPos + rowSize() - highlightRangeEnd) - pos = currPos + rowSize() - highlightRangeEnd; - if (pos > currPos - highlightRangeStart) - pos = currPos - highlightRangeStart; + if (isRightToLeftTopToBottom()) + pos = -pos-size(); // Transform Pos if required + if (pos < currPos + rowSize() - highlightEnd) + pos = currPos + rowSize() - highlightEnd; + if (pos > currPos - highlightStart) + pos = currPos - highlightStart; + if (isRightToLeftTopToBottom()) + pos = -pos-size(); // Untransform } - qreal dist = qAbs(data.move + pos); if (dist > 0) { timeline.reset(data.move); - if (fixupDuration) + if (fixupMode != Immediate) { timeline.move(data.move, -pos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration/2); - else + data.fixingUp = true; + } else { timeline.set(data.move, -pos); + } vTime = timeline.time(); } } else if (haveHighlightRange && highlightRange == QDeclarativeGridView::StrictlyEnforceRange) { if (currentItem) { updateHighlight(); qreal pos = currentItem->rowPos(); - qreal viewPos = position(); - if (viewPos < pos + rowSize() - highlightRangeEnd) - viewPos = pos + rowSize() - highlightRangeEnd; - if (viewPos > pos - highlightRangeStart) - viewPos = pos - highlightRangeStart; - + if (viewPos < pos + rowSize() - highlightEnd) + viewPos = pos + rowSize() - highlightEnd; + if (viewPos > pos - highlightStart) + viewPos = pos - highlightStart; + if (isRightToLeftTopToBottom()) + viewPos = -viewPos-size(); timeline.reset(data.move); if (viewPos != position()) { - if (fixupDuration) + if (fixupMode != Immediate) { timeline.move(data.move, -viewPos, QEasingCurve(QEasingCurve::InOutQuad), fixupDuration/2); - else + data.fixingUp = true; + } else { timeline.set(data.move, -viewPos); + } } vTime = timeline.time(); } } else { QDeclarativeFlickablePrivate::fixup(data, minExtent, maxExtent); } - fixupDuration = oldDuration; + fixupMode = Normal; } void QDeclarativeGridViewPrivate::flick(AxisData &data, qreal minExtent, qreal maxExtent, qreal vSize, QDeclarativeTimeLineCallback::Callback fixupCallback, qreal velocity) { Q_Q(QDeclarativeGridView); + data.fixingUp = false; moveReason = Mouse; if ((!haveHighlightRange || highlightRange != QDeclarativeGridView::StrictlyEnforceRange) && snapMode == QDeclarativeGridView::NoSnap) { @@ -989,12 +1130,14 @@ void QDeclarativeGridViewPrivate::flick(AxisData &data, qreal minExtent, qreal m return; } qreal maxDistance = 0; - // -ve velocity means list is moving up + qreal dataValue = isRightToLeftTopToBottom() ? -data.move.value()+size() : data.move.value(); + // -ve velocity means list is moving up/left if (velocity > 0) { if (data.move.value() < minExtent) { if (snapMode == QDeclarativeGridView::SnapOneRow) { - if (FxGridItem *item = firstVisibleItem()) - maxDistance = qAbs(item->rowPos() + data.move.value()); + if (FxGridItem *item = firstVisibleItem()) { + maxDistance = qAbs(item->rowPos() + dataValue); + } } else { maxDistance = qAbs(minExtent - data.move.value()); } @@ -1004,8 +1147,8 @@ void QDeclarativeGridViewPrivate::flick(AxisData &data, qreal minExtent, qreal m } else { if (data.move.value() > maxExtent) { if (snapMode == QDeclarativeGridView::SnapOneRow) { - qreal pos = snapPosAt(-data.move.value()) + rowSize(); - maxDistance = qAbs(pos + data.move.value()); + qreal pos = snapPosAt(-dataValue) + (isRightToLeftTopToBottom() ? 0 : rowSize()); + maxDistance = qAbs(pos + dataValue); } else { maxDistance = qAbs(maxExtent - data.move.value()); } @@ -1013,7 +1156,10 @@ void QDeclarativeGridViewPrivate::flick(AxisData &data, qreal minExtent, qreal m if (snapMode == QDeclarativeGridView::NoSnap && highlightRange != QDeclarativeGridView::StrictlyEnforceRange) data.flickTarget = maxExtent; } + bool overShoot = boundsBehavior == QDeclarativeFlickable::DragAndOvershootBounds; + qreal highlightStart = isRightToLeftTopToBottom() && highlightRangeStartValid ? size()-highlightRangeEnd : highlightRangeStart; + if (maxDistance > 0 || overShoot) { // This mode requires the grid to stop exactly on a row boundary. qreal v = velocity; @@ -1032,7 +1178,9 @@ void QDeclarativeGridViewPrivate::flick(AxisData &data, qreal minExtent, qreal m dist = qMin(dist, maxDistance); if (v > 0) dist = -dist; - data.flickTarget = -snapPosAt(-(data.move.value() - highlightRangeStart) + dist) + highlightRangeStart; + qreal distTemp = isRightToLeftTopToBottom() ? -dist : dist; + data.flickTarget = -snapPosAt(-(dataValue - highlightStart) + distTemp) + highlightStart; + data.flickTarget = isRightToLeftTopToBottom() ? -data.flickTarget+size() : data.flickTarget; qreal adjDist = -data.flickTarget + data.move.value(); if (qAbs(adjDist) > qAbs(dist)) { // Prevent painfully slow flicking - adjust velocity to suit flickDeceleration @@ -1224,6 +1372,13 @@ QVariant QDeclarativeGridView::model() const return d->modelVariant; } +// For internal use +int QDeclarativeGridView::modelCount() const +{ + Q_D(const QDeclarativeGridView); + return d->model->count(); +} + void QDeclarativeGridView::setModel(const QVariant &model) { Q_D(QDeclarativeGridView); @@ -1549,6 +1704,7 @@ qreal QDeclarativeGridView::preferredHighlightBegin() const void QDeclarativeGridView::setPreferredHighlightBegin(qreal start) { Q_D(QDeclarativeGridView); + d->highlightRangeStartValid = true; if (d->highlightRangeStart == start) return; d->highlightRangeStart = start; @@ -1556,6 +1712,16 @@ void QDeclarativeGridView::setPreferredHighlightBegin(qreal start) emit preferredHighlightBeginChanged(); } +void QDeclarativeGridView::resetPreferredHighlightBegin() +{ + Q_D(QDeclarativeGridView); + d->highlightRangeStartValid = false; + if (d->highlightRangeStart == 0) + return; + d->highlightRangeStart = 0; + emit preferredHighlightBeginChanged(); +} + qreal QDeclarativeGridView::preferredHighlightEnd() const { Q_D(const QDeclarativeGridView); @@ -1565,6 +1731,7 @@ qreal QDeclarativeGridView::preferredHighlightEnd() const void QDeclarativeGridView::setPreferredHighlightEnd(qreal end) { Q_D(QDeclarativeGridView); + d->highlightRangeEndValid = true; if (d->highlightRangeEnd == end) return; d->highlightRangeEnd = end; @@ -1572,6 +1739,16 @@ void QDeclarativeGridView::setPreferredHighlightEnd(qreal end) emit preferredHighlightEndChanged(); } +void QDeclarativeGridView::resetPreferredHighlightEnd() +{ + Q_D(QDeclarativeGridView); + d->highlightRangeEndValid = false; + if (d->highlightRangeEnd == 0) + return; + d->highlightRangeEnd = 0; + emit preferredHighlightEndChanged(); +} + QDeclarativeGridView::HighlightRangeMode QDeclarativeGridView::highlightRangeMode() const { Q_D(const QDeclarativeGridView); @@ -1588,6 +1765,60 @@ void QDeclarativeGridView::setHighlightRangeMode(HighlightRangeMode mode) emit highlightRangeModeChanged(); } +/*! + \qmlproperty enumeration GridView::layoutDirection + This property holds the layout direction of the grid. + + Possible values: + + \list + \o Qt.LeftToRight (default) - Items will be laid out starting in the top, left corner. The flow is + dependent on the \l GridView::flow property. + \o Qt.RightToLeft - Items will be laid out starting in the top, right corner. The flow is dependent + on the \l GridView:flow property. + \endlist + + \bold Note: If GridView::flow is set to GridView.LeftToRight, this is not to be confused if + GridView::layoutDirection is set to Qt.RightToLeft. The GridView.LeftToRight flow value simply + indicates that the flow is horizontal. +*/ + +Qt::LayoutDirection QDeclarativeGridView::layoutDirection() const +{ + Q_D(const QDeclarativeGridView); + return d->layoutDirection; +} + +void QDeclarativeGridView::setLayoutDirection(Qt::LayoutDirection layoutDirection) +{ + Q_D(QDeclarativeGridView); + if (d->layoutDirection != layoutDirection) { + d->layoutDirection = layoutDirection; + d->regenerate(); + emit layoutDirectionChanged(); + emit effectiveLayoutDirectionChanged(); + } +} + +/*! + \qmlproperty enumeration GridView::effectiveLayoutDirection + This property holds the effective layout direction of the grid. + + When using the attached property \l {LayoutMirroring::enabled}{LayoutMirroring::enabled} for locale layouts, + the visual layout direction of the grid will be mirrored. However, the + property \l {GridView::layoutDirection}{layoutDirection} will remain unchanged. + + \sa GridView::layoutDirection, {LayoutMirroring}{LayoutMirroring} +*/ + +Qt::LayoutDirection QDeclarativeGridView::effectiveLayoutDirection() const +{ + Q_D(const QDeclarativeGridView); + if (d->effectiveLayoutMirror) + return d->layoutDirection == Qt::RightToLeft ? Qt::LeftToRight : Qt::RightToLeft; + else + return d->layoutDirection; +} /*! \qmlproperty enumeration GridView::flow @@ -1620,10 +1851,7 @@ void QDeclarativeGridView::setFlow(Flow flow) } setContentX(0); setContentY(0); - d->clear(); - d->updateGrid(); - refill(); - d->updateCurrent(d->currentIndex); + d->regenerate(); emit flowChanged(); } } @@ -1890,11 +2118,23 @@ void QDeclarativeGridView::viewportMoved() if (d->haveHighlightRange && d->highlightRange == StrictlyEnforceRange && d->highlight) { // reposition highlight qreal pos = d->highlight->rowPos(); - qreal viewPos = d->position(); - if (pos > viewPos + d->highlightRangeEnd - d->rowSize()) - pos = viewPos + d->highlightRangeEnd - d->rowSize(); - if (pos < viewPos + d->highlightRangeStart) - pos = viewPos + d->highlightRangeStart; + qreal viewPos; + qreal highlightStart; + qreal highlightEnd; + if (d->isRightToLeftTopToBottom()) { + highlightStart = d->highlightRangeStartValid ? d->size()-d->highlightRangeEnd : d->highlightRangeStart; + highlightEnd = d->highlightRangeEndValid ? d->size()-d->highlightRangeStart : d->highlightRangeEnd; + viewPos = -d->position()-d->size(); + } else { + highlightStart = d->highlightRangeStart; + highlightEnd = d->highlightRangeEnd; + viewPos = d->position(); + } + if (pos > viewPos + highlightEnd - d->rowSize()) + pos = viewPos + highlightEnd - d->rowSize(); + if (pos < viewPos + highlightStart) + pos = viewPos + highlightStart; + d->highlight->setPosition(d->highlight->colPos(), qRound(pos)); // update current index @@ -1956,11 +2196,27 @@ qreal QDeclarativeGridView::minXExtent() const if (d->flow == QDeclarativeGridView::LeftToRight) return QDeclarativeFlickable::minXExtent(); qreal extent = -d->startPosition(); - if (d->header && d->visibleItems.count()) - extent += d->header->item->width(); + qreal highlightStart; + qreal highlightEnd; + qreal endPositionFirstItem; + if (d->isRightToLeftTopToBottom()) { + endPositionFirstItem = d->rowPosAt(d->model->count()-1); + highlightStart = d->highlightRangeStartValid + ? d->highlightRangeStart - (d->lastPosition()-endPositionFirstItem) + : d->size() - (d->lastPosition()-endPositionFirstItem); + highlightEnd = d->highlightRangeEndValid ? d->highlightRangeEnd : d->size(); + if (d->footer && d->visibleItems.count()) + extent += d->footer->item->width(); + } else { + endPositionFirstItem = d->rowPosAt(0)+d->rowSize(); + highlightStart = d->highlightRangeStart; + highlightEnd = d->highlightRangeEnd; + if (d->header && d->visibleItems.count()) + extent += d->header->item->width(); + } if (d->haveHighlightRange && d->highlightRange == StrictlyEnforceRange) { - extent += d->highlightRangeStart; - extent = qMax(extent, -(d->rowPosAt(0) + d->rowSize() - d->highlightRangeEnd)); + extent += highlightStart; + extent = qMax(extent, -(endPositionFirstItem - highlightEnd)); } return extent; } @@ -1971,17 +2227,38 @@ qreal QDeclarativeGridView::maxXExtent() const if (d->flow == QDeclarativeGridView::LeftToRight) return QDeclarativeFlickable::maxXExtent(); qreal extent; + qreal highlightStart; + qreal highlightEnd; + qreal lastItemPosition; + if (d->isRightToLeftTopToBottom()){ + highlightStart = d->highlightRangeStartValid ? d->highlightRangeEnd : d->size(); + highlightEnd = d->highlightRangeEndValid ? d->highlightRangeStart : d->size(); + lastItemPosition = d->endPosition(); + } else { + highlightStart = d->highlightRangeStart; + highlightEnd = d->highlightRangeEnd; + if (d->model && d->model->count()) + lastItemPosition = d->rowPosAt(d->model->count()-1); + } if (!d->model || !d->model->count()) { extent = 0; - } if (d->haveHighlightRange && d->highlightRange == StrictlyEnforceRange) { - extent = -(d->rowPosAt(d->model->count()-1) - d->highlightRangeStart); - if (d->highlightRangeEnd != d->highlightRangeStart) - extent = qMin(extent, -(d->endPosition() - d->highlightRangeEnd + 1)); + } else if (d->haveHighlightRange && d->highlightRange == StrictlyEnforceRange) { + extent = -(lastItemPosition - highlightStart); + if (highlightEnd != highlightStart) + extent = d->isRightToLeftTopToBottom() + ? qMax(extent, -(d->endPosition() - highlightEnd + 1)) + : qMin(extent, -(d->endPosition() - highlightEnd + 1)); } else { extent = -(d->endPosition() - width()); } - if (d->footer) - extent -= d->footer->item->width(); + if (d->isRightToLeftTopToBottom()) { + if (d->header) + extent -= d->header->item->width(); + } else { + if (d->footer) + extent -= d->footer->item->width(); + } + const qreal minX = minXExtent(); if (extent > minX) extent = minX; @@ -2094,15 +2371,30 @@ void QDeclarativeGridView::moveCurrentIndexLeft() const int count = d->model ? d->model->count() : 0; if (!count) return; - if (d->flow == QDeclarativeGridView::LeftToRight) { - if (currentIndex() > 0 || d->wrap) { - int index = currentIndex() - 1; - setCurrentIndex((index >= 0 && index < count) ? index : count-1); + + if (effectiveLayoutDirection() == Qt::LeftToRight) { + if (d->flow == QDeclarativeGridView::LeftToRight) { + if (currentIndex() > 0 || d->wrap) { + int index = currentIndex() - 1; + setCurrentIndex((index >= 0 && index < count) ? index : count-1); + } + } else { + if (currentIndex() >= d->columns || d->wrap) { + int index = currentIndex() - d->columns; + setCurrentIndex((index >= 0 && index < count) ? index : count-1); + } } } else { - if (currentIndex() >= d->columns || d->wrap) { - int index = currentIndex() - d->columns; - setCurrentIndex((index >= 0 && index < count) ? index : count-1); + if (d->flow == QDeclarativeGridView::LeftToRight) { + if (currentIndex() < count - 1 || d->wrap) { + int index = currentIndex() + 1; + setCurrentIndex((index >= 0 && index < count) ? index : 0); + } + } else { + if (currentIndex() < count - d->columns || d->wrap) { + int index = currentIndex() + d->columns; + setCurrentIndex((index >= 0 && index < count) ? index : 0); + } } } } @@ -2122,15 +2414,30 @@ void QDeclarativeGridView::moveCurrentIndexRight() const int count = d->model ? d->model->count() : 0; if (!count) return; - if (d->flow == QDeclarativeGridView::LeftToRight) { - if (currentIndex() < count - 1 || d->wrap) { - int index = currentIndex() + 1; - setCurrentIndex((index >= 0 && index < count) ? index : 0); + + if (effectiveLayoutDirection() == Qt::LeftToRight) { + if (d->flow == QDeclarativeGridView::LeftToRight) { + if (currentIndex() < count - 1 || d->wrap) { + int index = currentIndex() + 1; + setCurrentIndex((index >= 0 && index < count) ? index : 0); + } + } else { + if (currentIndex() < count - d->columns || d->wrap) { + int index = currentIndex()+d->columns; + setCurrentIndex((index >= 0 && index < count) ? index : 0); + } } } else { - if (currentIndex() < count - d->columns || d->wrap) { - int index = currentIndex()+d->columns; - setCurrentIndex((index >= 0 && index < count) ? index : 0); + if (d->flow == QDeclarativeGridView::LeftToRight) { + if (currentIndex() > 0 || d->wrap) { + int index = currentIndex() - 1; + setCurrentIndex((index >= 0 && index < count) ? index : count-1); + } + } else { + if (currentIndex() >= d->columns || d->wrap) { + int index = currentIndex() - d->columns; + setCurrentIndex((index >= 0 && index < count) ? index : count-1); + } } } } @@ -2147,16 +2454,24 @@ void QDeclarativeGridViewPrivate::positionViewAtIndex(int index, int mode) if (layoutScheduled) layout(); - qreal pos = position(); + qreal pos = isRightToLeftTopToBottom() ? -position() - size() : position(); FxGridItem *item = visibleItem(idx); - qreal maxExtent = flow == QDeclarativeGridView::LeftToRight ? -q->maxYExtent() : -q->maxXExtent(); + qreal maxExtent; + if (flow == QDeclarativeGridView::LeftToRight) + maxExtent = -q->maxYExtent(); + else + maxExtent = isRightToLeftTopToBottom() ? q->minXExtent()-size() : -q->maxXExtent(); + if (!item) { int itemPos = rowPosAt(idx); // save the currently visible items in case any of them end up visible again QList<FxGridItem*> oldVisible = visibleItems; visibleItems.clear(); visibleIndex = idx - idx % columns; - maxExtent = flow == QDeclarativeGridView::LeftToRight ? -q->maxYExtent() : -q->maxXExtent(); + if (flow == QDeclarativeGridView::LeftToRight) + maxExtent = -q->maxYExtent(); + else + maxExtent = isRightToLeftTopToBottom() ? q->minXExtent()-size() : -q->maxXExtent(); setPosition(qMin(qreal(itemPos), maxExtent)); // now release the reference to all the old visible items. for (int i = 0; i < oldVisible.count(); ++i) @@ -2197,8 +2512,13 @@ void QDeclarativeGridViewPrivate::positionViewAtIndex(int index, int mode) if (itemPos < pos) pos = itemPos; } + pos = qMin(pos, maxExtent); - qreal minExtent = flow == QDeclarativeGridView::LeftToRight ? -q->minYExtent() : -q->minXExtent(); + qreal minExtent; + if (flow == QDeclarativeGridView::LeftToRight) + minExtent = -q->minYExtent(); + else + minExtent = isRightToLeftTopToBottom() ? q->maxXExtent()-size() : -q->minXExtent(); pos = qMax(pos, minExtent); moveReason = QDeclarativeGridViewPrivate::Other; q->cancelFlick(); @@ -2250,6 +2570,7 @@ void QDeclarativeGridView::positionViewAtIndex(int index, int mode) /*! \qmlmethod GridView::positionViewAtBeginning() \qmlmethod GridView::positionViewAtEnd() + \since Quick 1.1 Positions the view at the beginning or end, taking into account any header or footer. @@ -2337,32 +2658,43 @@ void QDeclarativeGridView::trackedPositionChanged() return; if (d->moveReason == QDeclarativeGridViewPrivate::SetIndex) { const qreal trackedPos = d->trackedItem->rowPos(); - const qreal viewPos = d->position(); + qreal viewPos; + qreal highlightStart; + qreal highlightEnd; + if (d->isRightToLeftTopToBottom()) { + viewPos = -d->position()-d->size(); + highlightStart = d->highlightRangeStartValid ? d->size()-d->highlightRangeEnd : d->highlightRangeStart; + highlightEnd = d->highlightRangeEndValid ? d->size()-d->highlightRangeStart : d->highlightRangeEnd; + } else { + viewPos = d->position(); + highlightStart = d->highlightRangeStart; + highlightEnd = d->highlightRangeEnd; + } qreal pos = viewPos; if (d->haveHighlightRange) { if (d->highlightRange == StrictlyEnforceRange) { - if (trackedPos > pos + d->highlightRangeEnd - d->rowSize()) - pos = trackedPos - d->highlightRangeEnd + d->rowSize(); - if (trackedPos < pos + d->highlightRangeStart) - pos = trackedPos - d->highlightRangeStart; + if (trackedPos > pos + highlightEnd - d->rowSize()) + pos = trackedPos - highlightEnd + d->rowSize(); + if (trackedPos < pos + highlightStart) + pos = trackedPos - highlightStart; } else { - if (trackedPos < d->startPosition() + d->highlightRangeStart) { + if (trackedPos < d->startPosition() + highlightStart) { pos = d->startPosition(); - } else if (d->trackedItem->endRowPos() > d->endPosition() - d->size() + d->highlightRangeEnd) { + } else if (d->trackedItem->endRowPos() > d->endPosition() - d->size() + highlightEnd) { pos = d->endPosition() - d->size() + 1; if (pos < d->startPosition()) pos = d->startPosition(); } else { - if (trackedPos < viewPos + d->highlightRangeStart) { - pos = trackedPos - d->highlightRangeStart; - } else if (trackedPos > viewPos + d->highlightRangeEnd - d->rowSize()) { - pos = trackedPos - d->highlightRangeEnd + d->rowSize(); + if (trackedPos < viewPos + highlightStart) { + pos = trackedPos - highlightStart; + } else if (trackedPos > viewPos + highlightEnd - d->rowSize()) { + pos = trackedPos - highlightEnd + d->rowSize(); } } } } else { if (trackedPos < viewPos && d->currentItem->rowPos() < viewPos) { - pos = d->currentItem->rowPos() < trackedPos ? trackedPos : d->currentItem->rowPos(); + pos = qMax(trackedPos, d->currentItem->rowPos()); } else if (d->trackedItem->endRowPos() >= viewPos + d->size() && d->currentItem->endRowPos() >= viewPos + d->size()) { if (d->trackedItem->endRowPos() <= d->currentItem->endRowPos()) { @@ -2430,7 +2762,8 @@ void QDeclarativeGridView::itemsInserted(int modelIndex, int count) modelIndex = d->visibleIndex; } - int to = d->buffer+d->position()+d->size()-1; + qreal tempPos = d->isRightToLeftTopToBottom() ? -d->position()-d->size()+d->width()+1 : d->position(); + int to = d->buffer+tempPos+d->size()-1; int colPos = 0; int rowPos = 0; if (d->visibleItems.count()) { @@ -2448,10 +2781,7 @@ void QDeclarativeGridView::itemsInserted(int modelIndex, int count) } } } else if (d->itemCount == 0 && d->header) { - if (d->flow == QDeclarativeGridView::LeftToRight) - rowPos = d->headerSize(); - else - colPos = d->headerSize(); + rowPos = d->headerSize(); } // Update the indexes of the following visible items. @@ -2504,10 +2834,10 @@ void QDeclarativeGridView::itemsInserted(int modelIndex, int count) if (d->currentItem) { d->currentItem->index = d->currentIndex; d->currentItem->setPosition(d->colPosAt(d->currentIndex), d->rowPosAt(d->currentIndex)); - } else if (!d->currentIndex || (d->currentIndex < 0 && !d->currentIndexCleared)) { - d->updateCurrent(0); } emit currentIndexChanged(); + } else if (d->itemCount == 0 && (!d->currentIndex || (d->currentIndex < 0 && !d->currentIndexCleared))) { + setCurrentIndex(0); } // everything is in order now - emit add() signal @@ -2574,6 +2904,8 @@ void QDeclarativeGridView::itemsRemoved(int modelIndex, int count) d->currentIndex = -1; if (d->itemCount) d->updateCurrent(qMin(modelIndex, d->itemCount-1)); + else + emit currentIndexChanged(); } // update visibleIndex @@ -2756,7 +3088,10 @@ void QDeclarativeGridView::animStopped() void QDeclarativeGridView::refill() { Q_D(QDeclarativeGridView); - d->refill(d->position(), d->position()+d->size()-1); + if (d->isRightToLeftTopToBottom()) + d->refill(-d->position()-d->size()+1, -d->position()); + else + d->refill(d->position(), d->position()+d->size()-1); } |