diff options
Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativepositioners.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qdeclarativepositioners.cpp | 252 |
1 files changed, 217 insertions, 35 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativepositioners.cpp b/src/declarative/graphicsitems/qdeclarativepositioners.cpp index 4e049c7..27a1301 100644 --- a/src/declarative/graphicsitems/qdeclarativepositioners.cpp +++ b/src/declarative/graphicsitems/qdeclarativepositioners.cpp @@ -111,14 +111,14 @@ void QDeclarativeBasePositioner::graphicsWidgetGeometryChanged() Note that the subclass is responsible for adding the spacing in between items. */ QDeclarativeBasePositioner::QDeclarativeBasePositioner(PositionerType at, QDeclarativeItem *parent) - : QDeclarativeItem(*(new QDeclarativeBasePositionerPrivate), parent) + : QDeclarativeImplicitSizeItem(*(new QDeclarativeBasePositionerPrivate), parent) { Q_D(QDeclarativeBasePositioner); d->init(at); } QDeclarativeBasePositioner::QDeclarativeBasePositioner(QDeclarativeBasePositionerPrivate &dd, PositionerType at, QDeclarativeItem *parent) - : QDeclarativeItem(dd, parent) + : QDeclarativeImplicitSizeItem(dd, parent) { Q_D(QDeclarativeBasePositioner); d->init(at); @@ -364,9 +364,13 @@ void QDeclarativeBasePositioner::finishApplyTransitions() \qml Column { spacing: 2 - add: ... - move: ... - ... + add: Transition { + // Define an animation for adding a new item... + } + move: Transition { + // Define an animation for moving items within the column... + } + // ... } \endqml @@ -381,7 +385,7 @@ void QDeclarativeBasePositioner::finishApplyTransitions() Items with a width or height of 0 will not be positioned. - \sa Row, Grid, Flow, {declarative/positioners}{Positioners example} + \sa Row, Grid, Flow, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty Transition Column::add @@ -421,7 +425,7 @@ void QDeclarativeBasePositioner::finishApplyTransitions() } \endqml - \sa add, {declarative/positioners}{Positioners example} + \sa add, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty int Column::spacing @@ -524,7 +528,7 @@ void QDeclarativeColumn::reportConflictingAnchors() Items with a width or height of 0 will not be positioned. - \sa Column, Grid, Flow, {declarative/positioners}{Positioners example} + \sa Column, Grid, Flow, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty Transition Row::add @@ -563,7 +567,7 @@ void QDeclarativeColumn::reportConflictingAnchors() } \endqml - \sa add, {declarative/positioners}{Positioners example} + \sa add, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty int Row::spacing @@ -574,21 +578,55 @@ void QDeclarativeColumn::reportConflictingAnchors() \sa Grid::spacing */ QDeclarativeRow::QDeclarativeRow(QDeclarativeItem *parent) -: QDeclarativeBasePositioner(Horizontal, parent) +: QDeclarativeBasePositioner(Horizontal, parent), m_layoutDirection(Qt::LeftToRight) { } +/*! + \qmlproperty enumeration Row::layoutDirection + This property holds the layoutDirection of the row. + + Possible values: + + \list + \o Qt.LeftToRight (default) - Items are laid out from left to right. If the width of the row is explicitly set, + the left anchor remains to the left of the row. + \o Qt.RightToLeft - Items are laid out from right to left. If the width of the row is explicitly set, + the right anchor remains to the right of the row. + \endlist + + \sa Grid::layoutDirection, Flow::layoutDirection, {declarative/positioners/layoutdirection}{Layout directions example} +*/ +Qt::LayoutDirection QDeclarativeRow::layoutDirection() const +{ + return m_layoutDirection; +} + +void QDeclarativeRow::setLayoutDirection(Qt::LayoutDirection layoutDirection) +{ + if (m_layoutDirection != layoutDirection) { + m_layoutDirection = layoutDirection; + prePositioning(); + emit layoutDirectionChanged(); + } +} + void QDeclarativeRow::doPositioning(QSizeF *contentSize) { int hoffset = 0; + QList<int> hoffsets; for (int ii = 0; ii < positionedItems.count(); ++ii) { const PositionedItem &child = positionedItems.at(ii); if (!child.item || !child.isVisible) continue; - if(child.item->x() != hoffset) - positionX(hoffset, child); + if(m_layoutDirection == Qt::LeftToRight){ + if(child.item->x() != hoffset) + positionX(hoffset, child); + }else{ + hoffsets << hoffset; + } contentSize->setHeight(qMax(contentSize->height(), QGraphicsItemPrivate::get(child.item)->height())); @@ -597,6 +635,26 @@ void QDeclarativeRow::doPositioning(QSizeF *contentSize) } contentSize->setWidth(hoffset - spacing()); + + if(m_layoutDirection == Qt::LeftToRight) + return; + + //Right to Left layout + int end = 0; + if(!widthValid()) + end = contentSize->width(); + else + end = width(); + + int acc = 0; + for (int ii = 0; ii < positionedItems.count(); ++ii) { + const PositionedItem &child = positionedItems.at(ii); + if (!child.item || !child.isVisible) + continue; + hoffset = end - hoffsets[acc++] - QGraphicsItemPrivate::get(child.item)->width(); + if(child.item->x() != hoffset) + positionX(hoffset, child); + } } void QDeclarativeRow::reportConflictingAnchors() @@ -674,7 +732,7 @@ void QDeclarativeRow::reportConflictingAnchors() Items with a width or height of 0 will not be positioned. - \sa Flow, Row, Column, {declarative/positioners}{Positioners example} + \sa Flow, Row, Column, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty Transition Grid::add @@ -712,7 +770,7 @@ void QDeclarativeRow::reportConflictingAnchors() } \endqml - \sa add, {declarative/positioners}{Positioners example} + \sa add, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty int Grid::spacing @@ -732,7 +790,7 @@ void QDeclarativeRow::reportConflictingAnchors() \sa rows, columns */ QDeclarativeGrid::QDeclarativeGrid(QDeclarativeItem *parent) : - QDeclarativeBasePositioner(Both, parent), m_rows(-1), m_columns(-1), m_flow(LeftToRight) + QDeclarativeBasePositioner(Both, parent), m_rows(-1), m_columns(-1), m_flow(LeftToRight), m_layoutDirection(Qt::LeftToRight) { } @@ -780,7 +838,7 @@ void QDeclarativeGrid::setRows(const int rows) \list \o Grid.LeftToRight (default) - Items are positioned next to - to each other from left to right, then wrapped to the next line. + each other in the \l layoutDirection, then wrapped to the next line. \o Grid.TopToBottom - Items are positioned next to each other from top to bottom, then wrapped to the next column. \endlist @@ -799,6 +857,37 @@ void QDeclarativeGrid::setFlow(Flow flow) } } +/*! + \qmlproperty enumeration Grid::layoutDirection + This property holds the layout direction of the layout. + + Possible values are: + + \list + \o Qt.LeftToRight (default) - Items are positioned beginning + from the top, left anchor. The flow direction is dependent + on the \l Grid::flow property. + \o Qt.RightToLeft - Items are positioned beginning from the + top, right anchor. The flow direction is dependent on the + \l Grid::flow property. + \endlist + + \sa Flow::layoutDirection, Row::layoutDirection, {declarative/positioners/layoutdirection}{Layout directions example} +*/ +Qt::LayoutDirection QDeclarativeGrid::layoutDirection() const +{ + return m_layoutDirection; +} + +void QDeclarativeGrid::setLayoutDirection(Qt::LayoutDirection layoutDirection) +{ + if (m_layoutDirection != layoutDirection) { + m_layoutDirection = layoutDirection; + prePositioning(); + emit layoutDirectionChanged(); + } +} + void QDeclarativeGrid::doPositioning(QSizeF *contentSize) { @@ -821,6 +910,9 @@ void QDeclarativeGrid::doPositioning(QSizeF *contentSize) c = (numVisible+(m_rows-1))/m_rows; } + if(r==0 || c==0) + return; //Nothing to do + QList<int> maxColWidth; QList<int> maxRowHeight; int childIndex =0; @@ -851,7 +943,7 @@ void QDeclarativeGrid::doPositioning(QSizeF *contentSize) if (i==0) maxColWidth << 0; - if (childIndex == positionedItems.count()) + if (childIndex == visibleItems.count()) break; const PositionedItem &child = visibleItems.at(childIndex++); @@ -864,40 +956,71 @@ void QDeclarativeGrid::doPositioning(QSizeF *contentSize) } } + int widthSum = 0; + for(int j=0; j < maxColWidth.size(); j++){ + if(j) + widthSum += spacing(); + widthSum += maxColWidth[j]; + } + + int heightSum = 0; + for(int i=0; i < maxRowHeight.size(); i++){ + if(i) + heightSum += spacing(); + heightSum += maxRowHeight[i]; + } + + contentSize->setHeight(heightSum); + contentSize->setWidth(widthSum); + + int end = 0; + if(widthValid()) + end = width(); + else + end = widthSum; + int xoffset=0; + if(m_layoutDirection == Qt::RightToLeft) + xoffset=end; int yoffset=0; int curRow =0; int curCol =0; for (int i = 0; i < visibleItems.count(); ++i) { const PositionedItem &child = visibleItems.at(i); - if((child.item->x()!=xoffset)||(child.item->y()!=yoffset)){ - positionX(xoffset, child); + int childXOffset = xoffset; + if(m_layoutDirection == Qt::RightToLeft) + childXOffset -= QGraphicsItemPrivate::get(child.item)->width(); + if((child.item->x()!=childXOffset)||(child.item->y()!=yoffset)){ + positionX(childXOffset, child); positionY(yoffset, child); } if (m_flow == LeftToRight) { - contentSize->setWidth(qMax(contentSize->width(), xoffset + QGraphicsItemPrivate::get(child.item)->width())); - contentSize->setHeight(yoffset + maxRowHeight[curRow]); - - xoffset+=maxColWidth[curCol]+spacing(); + if(m_layoutDirection == Qt::LeftToRight) + xoffset+=maxColWidth[curCol]+spacing(); + else + xoffset-=maxColWidth[curCol]+spacing(); curCol++; curCol%=c; if (!curCol){ yoffset+=maxRowHeight[curRow]+spacing(); - xoffset=0; + if(m_layoutDirection == Qt::LeftToRight) + xoffset=0; + else + xoffset=end; curRow++; if (curRow>=r) break; } } else { - contentSize->setHeight(qMax(contentSize->height(), yoffset + QGraphicsItemPrivate::get(child.item)->height())); - contentSize->setWidth(xoffset + maxColWidth[curCol]); - yoffset+=maxRowHeight[curRow]+spacing(); curRow++; curRow%=r; if (!curRow){ - xoffset+=maxColWidth[curCol]+spacing(); + if(m_layoutDirection == Qt::LeftToRight) + xoffset+=maxColWidth[curCol]+spacing(); + else + xoffset-=maxColWidth[curCol]+spacing(); yoffset=0; curCol++; if (curCol>=c) @@ -973,7 +1096,7 @@ void QDeclarativeGrid::reportConflictingAnchors() Items with a width or height of 0 will not be positioned. - \sa Column, Row, Grid, {declarative/positioners}{Positioners example} + \sa Column, Row, Grid, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty Transition Flow::add @@ -1012,7 +1135,7 @@ void QDeclarativeGrid::reportConflictingAnchors() } \endqml - \sa add, {declarative/positioners}{Positioners example} + \sa add, {declarative/positioners/addandremove}{Positioners example} */ /*! \qmlproperty int Flow::spacing @@ -1029,10 +1152,12 @@ class QDeclarativeFlowPrivate : public QDeclarativeBasePositionerPrivate public: QDeclarativeFlowPrivate() - : QDeclarativeBasePositionerPrivate(), flow(QDeclarativeFlow::LeftToRight) + : QDeclarativeBasePositionerPrivate(), flow(QDeclarativeFlow::LeftToRight), + layoutDirection(Qt::LeftToRight) {} QDeclarativeFlow::Flow flow; + Qt::LayoutDirection layoutDirection; }; QDeclarativeFlow::QDeclarativeFlow(QDeclarativeItem *parent) @@ -1051,7 +1176,7 @@ QDeclarativeFlow::QDeclarativeFlow(QDeclarativeItem *parent) \list \o Flow.LeftToRight (default) - Items are positioned next to - to each other from left to right until the width of the Flow + to each other according to the \l layoutDirection until the width of the Flow is exceeded, then wrapped to the next line. \o Flow.TopToBottom - Items are positioned next to each other from top to bottom until the height of the Flow is exceeded, @@ -1074,6 +1199,40 @@ void QDeclarativeFlow::setFlow(Flow flow) } } +/*! + \qmlproperty enumeration Flow::layoutDirection + This property holds the layout direction of the layout. + + Possible values are: + + \list + \o Qt.LeftToRight (default) - Items are positioned beginning + from the top, left anchor. The flow direction is dependent + on the \l Flow::flow property. + \o Qt.RightToLeft - Items are positioned beginning from the + top, right anchor. The flow direction is dependent on the + \l Flow::flow property. + \endlist + + \sa Grid::layoutDirection, Row::layoutDirection, {declarative/positioners/layoutdirection}{Layout directions example} +*/ + +Qt::LayoutDirection QDeclarativeFlow::layoutDirection() const +{ + Q_D(const QDeclarativeFlow); + return d->layoutDirection; +} + +void QDeclarativeFlow::setLayoutDirection(Qt::LayoutDirection layoutDirection) +{ + Q_D(QDeclarativeFlow); + if (d->layoutDirection != layoutDirection) { + d->layoutDirection = layoutDirection; + prePositioning(); + emit layoutDirectionChanged(); + } +} + void QDeclarativeFlow::doPositioning(QSizeF *contentSize) { Q_D(QDeclarativeFlow); @@ -1081,6 +1240,7 @@ void QDeclarativeFlow::doPositioning(QSizeF *contentSize) int hoffset = 0; int voffset = 0; int linemax = 0; + QList<int> hoffsets; for (int i = 0; i < positionedItems.count(); ++i) { const PositionedItem &child = positionedItems.at(i); @@ -1102,10 +1262,14 @@ void QDeclarativeFlow::doPositioning(QSizeF *contentSize) } } - if(child.item->x() != hoffset || child.item->y() != voffset){ - positionX(hoffset, child); - positionY(voffset, child); + if(d->layoutDirection == Qt::LeftToRight){ + if(child.item->x() != hoffset) + positionX(hoffset, child); + }else{ + hoffsets << hoffset; } + if(child.item->y() != voffset) + positionY(voffset, child); contentSize->setWidth(qMax(contentSize->width(), hoffset + childPrivate->width())); contentSize->setHeight(qMax(contentSize->height(), voffset + childPrivate->height())); @@ -1120,6 +1284,24 @@ void QDeclarativeFlow::doPositioning(QSizeF *contentSize) linemax = qMax(linemax, qCeil(childPrivate->width())); } } + + if(d->layoutDirection == Qt::LeftToRight) + return; + + int end; + if(widthValid()) + end = width(); + else + end = contentSize->width(); + int acc = 0; + for (int i = 0; i < positionedItems.count(); ++i) { + const PositionedItem &child = positionedItems.at(i); + if (!child.item || !child.isVisible) + continue; + hoffset = end - hoffsets[acc++] - QGraphicsItemPrivate::get(child.item)->width(); + if(child.item->x() != hoffset) + positionX(hoffset, child); + } } void QDeclarativeFlow::reportConflictingAnchors() |