diff options
Diffstat (limited to 'src/gui/graphicsview')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsgridlayout.cpp | 3 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicsitem.cpp | 44 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicslayoutitem.cpp | 51 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicslayoutitem_p.h | 6 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicslinearlayout.cpp | 3 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 5 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicstransform.cpp | 42 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicstransform.h | 9 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgraphicswidget.cpp | 3 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgridlayoutengine.cpp | 266 | ||||
| -rw-r--r-- | src/gui/graphicsview/qgridlayoutengine_p.h | 23 |
11 files changed, 426 insertions, 29 deletions
diff --git a/src/gui/graphicsview/qgraphicsgridlayout.cpp b/src/gui/graphicsview/qgraphicsgridlayout.cpp index 8a3f17a..4104834 100644 --- a/src/gui/graphicsview/qgraphicsgridlayout.cpp +++ b/src/gui/graphicsview/qgraphicsgridlayout.cpp @@ -653,7 +653,8 @@ QSizeF QGraphicsGridLayout::sizeHint(Qt::SizeHint which, const QSizeF &constrain Q_D(const QGraphicsGridLayout); qreal left, top, right, bottom; getContentsMargins(&left, &top, &right, &bottom); - return d->engine.sizeHint(d->styleInfo(), which , constraint) + QSizeF(left + right, top + bottom); + const QSizeF extraMargins(left + right, top + bottom); + return d->engine.sizeHint(d->styleInfo(), which , constraint - extraMargins) + extraMargins; } diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp index da69bee..fdc512e 100644 --- a/src/gui/graphicsview/qgraphicsitem.cpp +++ b/src/gui/graphicsview/qgraphicsitem.cpp @@ -3259,8 +3259,12 @@ void QGraphicsItemPrivate::setFocusHelper(Qt::FocusReason focusReason, bool clim QGraphicsItem *p = parent; while (p) { if (p->flags() & QGraphicsItem::ItemIsFocusScope) { + QGraphicsItem *oldFocusScopeItem = p->d_ptr->focusScopeItem; p->d_ptr->focusScopeItem = q_ptr; if (!p->focusItem() && !focusFromShow) { + if (oldFocusScopeItem) + oldFocusScopeItem->d_ptr->focusScopeItemChange(false); + focusScopeItemChange(true); // If you call setFocus on a child of a focus scope that // doesn't currently have a focus item, then stop. return; @@ -3931,7 +3935,7 @@ void QGraphicsItem::setScale(qreal factor) Returns a list of graphics transforms that currently apply to this item. QGraphicsTransform is for applying and controlling a chain of individual - transformation operations on an item. It's particularily useful in + transformation operations on an item. It's particularly useful in animations, where each transform operation needs to be interpolated independently, or differently. @@ -3958,7 +3962,7 @@ QList<QGraphicsTransform *> QGraphicsItem::transformations() const an item, you can call setTransform(). QGraphicsTransform is for applying and controlling a chain of individual - transformation operations on an item. It's particularily useful in + transformation operations on an item. It's particularly useful in animations, where each transform operation needs to be interpolated independently, or differently. @@ -5152,7 +5156,7 @@ QPainterPath QGraphicsItem::opaqueArea() const The bounding region describes a coarse outline of the item's visual contents. Although it's expensive to calculate, it's also more precise than boundingRect(), and it can help to avoid unnecessary repainting when - an item is updated. This is particularily efficient for thin items (e.g., + an item is updated. This is particularly efficient for thin items (e.g., lines or simple polygons). You can tune the granularity for the bounding region by calling setBoundingRegionGranularity(). The default granularity is 0; in which the item's bounding region is the same as its bounding @@ -5595,6 +5599,7 @@ void QGraphicsItemPrivate::subFocusItemChange() */ void QGraphicsItemPrivate::focusScopeItemChange(bool isSubFocusItem) { + Q_UNUSED(isSubFocusItem); } /*! @@ -7753,6 +7758,21 @@ void QGraphicsItemPrivate::resetHeight() } /*! + \property QGraphicsObject::children + \internal +*/ + +/*! + \property QGraphicsObject::width + \internal +*/ + +/*! + \property QGraphicsObject::height + \internal +*/ + +/*! \property QGraphicsObject::parent \brief the parent of the item @@ -7965,6 +7985,24 @@ void QGraphicsItemPrivate::resetHeight() */ /*! + \property QGraphicsObject::children + \since 4.7 + \internal +*/ + +/*! + \property QGraphicsObject::width + \since 4.7 + \internal +*/ + +/*! + \property QGraphicsObject::height + \since 4.7 + \internal +*/ + +/*! \class QAbstractGraphicsShapeItem \brief The QAbstractGraphicsShapeItem class provides a common base for all path items. diff --git a/src/gui/graphicsview/qgraphicslayoutitem.cpp b/src/gui/graphicsview/qgraphicslayoutitem.cpp index f4d77f0..bfe734a 100644 --- a/src/gui/graphicsview/qgraphicslayoutitem.cpp +++ b/src/gui/graphicsview/qgraphicslayoutitem.cpp @@ -48,6 +48,7 @@ #include "qgraphicslayoutitem.h" #include "qgraphicslayoutitem_p.h" #include "qwidget.h" +#include "qgraphicswidget.h" #include <QtDebug> @@ -139,9 +140,11 @@ QSizeF *QGraphicsLayoutItemPrivate::effectiveSizeHints(const QSizeF &constraint) if (!sizeHintCacheDirty && cachedConstraint == constraint) return cachedSizeHints; + const bool hasConstraint = constraint.width() >= 0 || constraint.height() >= 0; + for (int i = 0; i < Qt::NSizeHints; ++i) { cachedSizeHints[i] = constraint; - if (userSizeHints) + if (userSizeHints && !hasConstraint) combineSize(cachedSizeHints[i], userSizeHints[i]); } @@ -259,6 +262,52 @@ void QGraphicsLayoutItemPrivate::setSizeComponent( q->updateGeometry(); } + +bool QGraphicsLayoutItemPrivate::hasHeightForWidth() const +{ + Q_Q(const QGraphicsLayoutItem); + if (isLayout) { + const QGraphicsLayout *l = static_cast<const QGraphicsLayout *>(q); + for (int i = l->count() - 1; i >= 0; --i) { + if (QGraphicsLayoutItemPrivate::get(l->itemAt(i))->hasHeightForWidth()) + return true; + } + } else if (QGraphicsItem *item = q->graphicsItem()) { + if (item->isWidget()) { + QGraphicsWidget *w = static_cast<QGraphicsWidget *>(item); + if (w->layout()) { + return QGraphicsLayoutItemPrivate::get(w->layout())->hasHeightForWidth(); + } + } + } + return q->sizePolicy().hasHeightForWidth(); +} + +bool QGraphicsLayoutItemPrivate::hasWidthForHeight() const +{ + // enable this code when we add QSizePolicy::hasWidthForHeight() (For 4.8) +#if 1 + return false; +#else + Q_Q(const QGraphicsLayoutItem); + if (isLayout) { + const QGraphicsLayout *l = static_cast<const QGraphicsLayout *>(q); + for (int i = l->count() - 1; i >= 0; --i) { + if (QGraphicsLayoutItemPrivate::get(l->itemAt(i))->hasWidthForHeight()) + return true; + } + } else if (QGraphicsItem *item = q->graphicsItem()) { + if (item->isWidget()) { + QGraphicsWidget *w = static_cast<QGraphicsWidget *>(item); + if (w->layout()) { + return QGraphicsLayoutItemPrivate::get(w->layout())->hasWidthForHeight(); + } + } + } + return q->sizePolicy().hasWidthForHeight(); +#endif +} + /*! \class QGraphicsLayoutItem \brief The QGraphicsLayoutItem class can be inherited to allow your custom diff --git a/src/gui/graphicsview/qgraphicslayoutitem_p.h b/src/gui/graphicsview/qgraphicslayoutitem_p.h index 15cc7a5..b752e03 100644 --- a/src/gui/graphicsview/qgraphicslayoutitem_p.h +++ b/src/gui/graphicsview/qgraphicslayoutitem_p.h @@ -65,6 +65,9 @@ class Q_AUTOTEST_EXPORT QGraphicsLayoutItemPrivate public: virtual ~QGraphicsLayoutItemPrivate(); QGraphicsLayoutItemPrivate(QGraphicsLayoutItem *parent, bool isLayout); + static QGraphicsLayoutItemPrivate *get(QGraphicsLayoutItem *q) { return q->d_func();} + static const QGraphicsLayoutItemPrivate *get(const QGraphicsLayoutItem *q) { return q->d_func();} + void init(); QSizeF *effectiveSizeHints(const QSizeF &constraint) const; QGraphicsItem *parentItem() const; @@ -73,6 +76,9 @@ public: enum SizeComponent { Width, Height }; void setSizeComponent(Qt::SizeHint which, SizeComponent component, qreal value); + bool hasHeightForWidth() const; + bool hasWidthForHeight() const; + QSizePolicy sizePolicy; QGraphicsLayoutItem *parent; diff --git a/src/gui/graphicsview/qgraphicslinearlayout.cpp b/src/gui/graphicsview/qgraphicslinearlayout.cpp index 37408ef..1588364 100644 --- a/src/gui/graphicsview/qgraphicslinearlayout.cpp +++ b/src/gui/graphicsview/qgraphicslinearlayout.cpp @@ -528,7 +528,8 @@ QSizeF QGraphicsLinearLayout::sizeHint(Qt::SizeHint which, const QSizeF &constra Q_D(const QGraphicsLinearLayout); qreal left, top, right, bottom; getContentsMargins(&left, &top, &right, &bottom); - return d->engine.sizeHint(d->styleInfo(), which , constraint) + QSizeF(left + right, top + bottom); + const QSizeF extraMargins(left + right, top + bottom); + return d->engine.sizeHint(d->styleInfo(), which , constraint - extraMargins) + extraMargins; } /*! diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index 654f60f..6d1bb44 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -831,6 +831,11 @@ void QGraphicsScenePrivate::setFocusItemHelper(QGraphicsItem *item, #endif //QT_NO_IM } + // This handles the case that the item has been removed from the + // scene in response to the FocusOut event. + if (item && item->scene() != q) + item = 0; + if (item) focusItem = item; updateInputMethodSensitivityInViews(); diff --git a/src/gui/graphicsview/qgraphicstransform.cpp b/src/gui/graphicsview/qgraphicstransform.cpp index 4ab6975..bd3f2ef 100644 --- a/src/gui/graphicsview/qgraphicstransform.cpp +++ b/src/gui/graphicsview/qgraphicstransform.cpp @@ -267,6 +267,7 @@ void QGraphicsScale::setXScale(qreal scale) return; d->xScale = scale; update(); + emit xScaleChanged(); emit scaleChanged(); } @@ -293,6 +294,7 @@ void QGraphicsScale::setYScale(qreal scale) return; d->yScale = scale; update(); + emit yScaleChanged(); emit scaleChanged(); } @@ -319,6 +321,7 @@ void QGraphicsScale::setZScale(qreal scale) return; d->zScale = scale; update(); + emit zScaleChanged(); emit scaleChanged(); } @@ -342,6 +345,24 @@ void QGraphicsScale::applyTo(QMatrix4x4 *matrix) const */ /*! + \fn QGraphicsScale::xScaleChanged() + + QGraphicsScale emits this signal when its xScale changes. +*/ + +/*! + \fn QGraphicsScale::yScaleChanged() + + QGraphicsScale emits this signal when its yScale changes. +*/ + +/*! + \fn QGraphicsScale::zScaleChanged() + + QGraphicsScale emits this signal when its zScale changes. +*/ + +/*! \fn QGraphicsScale::scaleChanged() This signal is emitted whenever the xScale, yScale, or zScale @@ -562,6 +583,27 @@ void QGraphicsRotation::applyTo(QMatrix4x4 *matrix) const \sa QGraphicsRotation::axis */ +/*! + \fn QGraphicsScale::xScaleChanged() + \since 4.7 + + This signal is emitted whenever the \l xScale property changes. +*/ + +/*! + \fn QGraphicsScale::yScaleChanged() + \since 4.7 + + This signal is emitted whenever the \l yScale property changes. +*/ + +/*! + \fn QGraphicsScale::zScaleChanged() + \since 4.7 + + This signal is emitted whenever the \l zScale property changes. +*/ + #include "moc_qgraphicstransform.cpp" QT_END_NAMESPACE diff --git a/src/gui/graphicsview/qgraphicstransform.h b/src/gui/graphicsview/qgraphicstransform.h index 58b201a..d8c9654 100644 --- a/src/gui/graphicsview/qgraphicstransform.h +++ b/src/gui/graphicsview/qgraphicstransform.h @@ -85,9 +85,9 @@ class Q_GUI_EXPORT QGraphicsScale : public QGraphicsTransform Q_OBJECT Q_PROPERTY(QVector3D origin READ origin WRITE setOrigin NOTIFY originChanged) - Q_PROPERTY(qreal xScale READ xScale WRITE setXScale NOTIFY scaleChanged) - Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY scaleChanged) - Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY scaleChanged) + Q_PROPERTY(qreal xScale READ xScale WRITE setXScale NOTIFY xScaleChanged) + Q_PROPERTY(qreal yScale READ yScale WRITE setYScale NOTIFY yScaleChanged) + Q_PROPERTY(qreal zScale READ zScale WRITE setZScale NOTIFY zScaleChanged) public: QGraphicsScale(QObject *parent = 0); ~QGraphicsScale(); @@ -108,6 +108,9 @@ public: Q_SIGNALS: void originChanged(); + void xScaleChanged(); + void yScaleChanged(); + void zScaleChanged(); void scaleChanged(); private: diff --git a/src/gui/graphicsview/qgraphicswidget.cpp b/src/gui/graphicsview/qgraphicswidget.cpp index c486c45..0fabd18 100644 --- a/src/gui/graphicsview/qgraphicswidget.cpp +++ b/src/gui/graphicsview/qgraphicswidget.cpp @@ -385,12 +385,12 @@ void QGraphicsWidget::setGeometry(const QRectF &rect) if (wd->inSetPos) { //set the new pos d->geom.moveTopLeft(pos()); + emit geometryChanged(); return; } } QSizeF oldSize = size(); QGraphicsLayoutItem::setGeometry(newGeom); - emit geometryChanged(); // Send resize event bool resized = newGeom.size() != oldSize; if (resized) { @@ -403,6 +403,7 @@ void QGraphicsWidget::setGeometry(const QRectF &rect) emit heightChanged(); QApplication::sendEvent(this, &re); } + emit geometryChanged(); } /*! diff --git a/src/gui/graphicsview/qgridlayoutengine.cpp b/src/gui/graphicsview/qgridlayoutengine.cpp index 8b65282..98e6781 100644 --- a/src/gui/graphicsview/qgridlayoutengine.cpp +++ b/src/gui/graphicsview/qgridlayoutengine.cpp @@ -250,6 +250,7 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz sumAvailable = targetSize - totalBox.q_preferredSize; if (sumAvailable > 0.0) { + qreal sumCurrentAvailable = sumAvailable; bool somethingHasAMaximumSize = false; qreal sumPreferredSizes = 0.0; @@ -308,12 +309,12 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz qreal ultimateFactor = (stretch * ultimateSumPreferredSizes / sumStretches) - (box.q_preferredSize); - qreal transitionalFactor = sumAvailable + qreal transitionalFactor = sumCurrentAvailable * (ultimatePreferredSize - box.q_preferredSize) / (ultimateSumPreferredSizes - sumPreferredSizes); - qreal alpha = qMin(sumAvailable, + qreal alpha = qMin(sumCurrentAvailable, ultimateSumPreferredSizes - sumPreferredSizes); qreal beta = ultimateSumPreferredSizes - sumPreferredSizes; @@ -321,7 +322,7 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz + ((beta - alpha) * transitionalFactor)) / beta; } sumFactors += factors[i]; - if (desired < sumAvailable) + if (desired < sumCurrentAvailable) somethingHasAMaximumSize = true; newSizes[i] = -1.0; @@ -337,12 +338,12 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz continue; const QGridLayoutBox &box = boxes.at(start + i); - qreal avail = sumAvailable * factors[i] / sumFactors; + qreal avail = sumCurrentAvailable * factors[i] / sumFactors; if (sizes[i] + avail >= box.q_maximumSize) { newSizes[i] = box.q_maximumSize; - sumAvailable -= box.q_maximumSize - sizes[i]; + sumCurrentAvailable -= box.q_maximumSize - sizes[i]; sumFactors -= factors[i]; - keepGoing = (sumAvailable > 0.0); + keepGoing = (sumCurrentAvailable > 0.0); if (!keepGoing) break; } @@ -352,7 +353,7 @@ void QGridLayoutRowData::calculateGeometries(int start, int end, qreal targetSiz for (int i = 0; i < n; ++i) { if (newSizes[i] < 0.0) { qreal delta = (sumFactors == 0.0) ? 0.0 - : sumAvailable * factors[i] / sumFactors; + : sumCurrentAvailable * factors[i] / sumFactors; newSizes[i] = sizes[i] + delta; } } @@ -545,6 +546,24 @@ QSizePolicy::Policy QGridLayoutItem::sizePolicy(Qt::Orientation orientation) con : sizePolicy.verticalPolicy(); } +/* + returns true if the size policy returns true for either hasHeightForWidth() + or hasWidthForHeight() + */ +bool QGridLayoutItem::hasDynamicConstraint() const +{ + return QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasHeightForWidth() + || QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight(); +} + +Qt::Orientation QGridLayoutItem::dynamicConstraintOrientation() const +{ + if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasHeightForWidth()) + return Qt::Vertical; + else //if (QGraphicsLayoutItemPrivate::get(q_layoutItem)->hasWidthForHeight()) + return Qt::Horizontal; +} + QSizePolicy::ControlTypes QGridLayoutItem::controlTypes(LayoutSide /* side */) const { return q_layoutItem->sizePolicy().controlType(); @@ -613,7 +632,14 @@ QRectF QGridLayoutItem::geometryWithin(qreal x, qreal y, qreal width, qreal heig qreal cellWidth = width; qreal cellHeight = height; - QSizeF size = effectiveMaxSize().boundedTo(QSizeF(cellWidth, cellHeight)); + QSize constraint; + if (hasDynamicConstraint()) { + if (dynamicConstraintOrientation() == Qt::Vertical) + constraint.setWidth(cellWidth); + else + constraint.setHeight(cellHeight); + } + QSizeF size = effectiveMaxSize(constraint).boundedTo(QSizeF(cellWidth, cellHeight)); width = size.width(); height = size.height(); @@ -675,13 +701,13 @@ void QGridLayoutItem::insertOrRemoveRows(int row, int delta, Qt::Orientation ori Note that effectiveSizeHint does not take sizePolicy into consideration, (since it only evaluates the hints, as the name implies) */ -QSizeF QGridLayoutItem::effectiveMaxSize() const +QSizeF QGridLayoutItem::effectiveMaxSize(const QSizeF &constraint) const { - QSizeF size; + QSizeF size = constraint; bool vGrow = (sizePolicy(Qt::Vertical) & QSizePolicy::GrowFlag) == QSizePolicy::GrowFlag; bool hGrow = (sizePolicy(Qt::Horizontal) & QSizePolicy::GrowFlag) == QSizePolicy::GrowFlag; if (!vGrow || !hGrow) { - QSizeF pref = layoutItem()->effectiveSizeHint(Qt::PreferredSize); + QSizeF pref = layoutItem()->effectiveSizeHint(Qt::PreferredSize, constraint); if (!vGrow) size.setHeight(pref.height()); if (!hGrow) @@ -689,7 +715,7 @@ QSizeF QGridLayoutItem::effectiveMaxSize() const } if (!size.isValid()) { - QSizeF maxSize = layoutItem()->effectiveSizeHint(Qt::MaximumSize); + QSizeF maxSize = layoutItem()->effectiveSizeHint(Qt::MaximumSize, constraint); if (size.width() == -1) size.setWidth(maxSize.width()); if (size.height() == -1) @@ -1019,6 +1045,7 @@ void QGridLayoutEngine::invalidate() q_cachedEffectiveLastRows[Ver] = -1; q_cachedDataForStyleInfo.invalidate(); q_cachedSize = QSizeF(); + q_cachedConstraintOrientation = UnknownConstraint; } static void visualRect(QRectF *geom, Qt::LayoutDirection dir, const QRectF &contentsRect) @@ -1083,10 +1110,13 @@ QRectF QGridLayoutEngine::cellRect(const QLayoutStyleInfo &styleInfo, } QSizeF QGridLayoutEngine::sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHint which, - const QSizeF & /* constraint */) const + const QSizeF &constraint) const { ensureColumnAndRowData(styleInfo); + if (hasDynamicConstraint()) + return dynamicallyConstrainedSizeHint(which, constraint); + switch (which) { case Qt::MinimumSize: return QSizeF(q_totalBoxes[Hor].q_minimumSize, q_totalBoxes[Ver].q_minimumSize); @@ -1384,7 +1414,11 @@ void QGridLayoutEngine::fillRowData(QGridLayoutRowData *rowData, const QLayoutSt box = &multiCell.q_box; multiCell.q_stretch = itemStretch; } - box->combine(item->box(orientation)); + // Items with constraints are not included in the orientation that + // they are constrained (since it depends on the hfw/constraint function). + // They must be combined at a later stage. + if (!item->hasDynamicConstraint() || orientation != item->dynamicConstraintOrientation()) + box->combine(item->box(orientation)); if (effectiveRowSpan == 1) { QSizePolicy::ControlTypes controls = item->controlTypes(top); @@ -1541,6 +1575,138 @@ void QGridLayoutEngine::ensureColumnAndRowData(const QLayoutStyleInfo &styleInfo q_cachedDataForStyleInfo = styleInfo; } +QSizeF QGridLayoutEngine::dynamicallyConstrainedSizeHint(Qt::SizeHint which, + const QSizeF &constraint) const +{ + Q_ASSERT(hasDynamicConstraint()); + if (constraint.width() < 0 && constraint.height() < 0) { + // Process the hfw / wfh items that we did not process in fillRowData() + const Qt::Orientation constraintOrient = constraintOrientation(); + + QGridLayoutRowData rowData = constraintOrient == Qt::Vertical ? q_rowData : q_columnData; + for (int i = q_items.count() - 1; i >= 0; --i) { + QGridLayoutItem *item = q_items.at(i); + if (item->hasDynamicConstraint()) { + QGridLayoutBox box = item->box(constraintOrient); + QGridLayoutBox &rowBox = rowData.boxes[item->firstRow(constraintOrient)]; + rowBox.combine(box); + } + } + + QGridLayoutBox totalBoxes[2]; + if (constraintOrient == Qt::Vertical) { + totalBoxes[Hor] = q_columnData.totalBox(0, columnCount()); + totalBoxes[Ver] = rowData.totalBox(0, rowCount()); + } else { + totalBoxes[Hor] = rowData.totalBox(0, columnCount()); + totalBoxes[Ver] = q_rowData.totalBox(0, rowCount()); + } + return QSizeF(totalBoxes[Hor].q_sizes(which), totalBoxes[Ver].q_sizes(which)); + } + + + Q_ASSERT(constraint.width() >= 0 || constraint.height() >= 0); + q_xx.resize(columnCount()); + q_yy.resize(rowCount()); + q_widths.resize(columnCount()); + q_heights.resize(rowCount()); + q_descents.resize(rowCount()); + + + const Qt::Orientation orientation = constraintOrientation(); + QGridLayoutRowData *colData; + QGridLayoutRowData constrainedRowData; + QGridLayoutBox *totalBox; + qreal *sizes; + qreal *pos; + qreal *descents; + qreal targetSize; + qreal cCount; + qreal rCount; + + if (orientation == Qt::Vertical) { + // height for width + colData = &q_columnData; + totalBox = &q_totalBoxes[Hor]; + sizes = q_widths.data(); + pos = q_xx.data(); + descents = 0; + targetSize = constraint.width(); + cCount = columnCount(); + rCount = rowCount(); + constrainedRowData = q_rowData; + } else { + // width for height + colData = &q_rowData; + totalBox = &q_totalBoxes[Ver]; + sizes = q_heights.data(); + pos = q_yy.data(); + descents = q_descents.data(); + targetSize = constraint.height(); + cCount = rowCount(); + rCount = columnCount(); + constrainedRowData = q_columnData; + } + colData->calculateGeometries(0, cCount, targetSize, pos, sizes, descents, *totalBox); + for (int i = q_items.count() - 1; i >= 0; --i) { + QGridLayoutItem *item = q_items.at(i); + + if (item->hasDynamicConstraint()) { + const qreal size = sizes[item->firstColumn(orientation)]; + QGridLayoutBox box = item->box(orientation, size); + QGridLayoutBox &rowBox = constrainedRowData.boxes[item->firstRow(orientation)]; + rowBox.combine(box); + } + } + const qreal newSize = constrainedRowData.totalBox(0, rCount).q_sizes(which); + + return (orientation == Qt::Vertical) ? QSizeF(targetSize, newSize) : QSizeF(newSize, targetSize); +} + + +/** + returns false if the layout has contradicting constraints (i.e. some items with a horizontal + constraint and other items with a vertical constraint) + */ +bool QGridLayoutEngine::ensureDynamicConstraint() const +{ + if (q_cachedConstraintOrientation == UnknownConstraint) { + for (int i = q_items.count() - 1; i >= 0; --i) { + QGridLayoutItem *item = q_items.at(i); + if (item->hasDynamicConstraint()) { + Qt::Orientation itemConstraintOrientation = item->dynamicConstraintOrientation(); + if (q_cachedConstraintOrientation == UnknownConstraint) { + q_cachedConstraintOrientation = itemConstraintOrientation; + } else if (q_cachedConstraintOrientation != itemConstraintOrientation) { + q_cachedConstraintOrientation = UnfeasibleConstraint; + qWarning("QGridLayoutEngine: Unfeasible, cannot mix horizontal and" + " vertical constraint in the same layout"); + return false; + } + } + } + if (q_cachedConstraintOrientation == UnknownConstraint) + q_cachedConstraintOrientation = NoConstraint; + } + return true; +} + +bool QGridLayoutEngine::hasDynamicConstraint() const +{ + if (!ensureDynamicConstraint()) + return false; + return q_cachedConstraintOrientation != NoConstraint; +} + +/* + * return value is only valid if hasConstraint() returns true + */ +Qt::Orientation QGridLayoutEngine::constraintOrientation() const +{ + (void)ensureDynamicConstraint(); + return (Qt::Orientation)q_cachedConstraintOrientation; +} + void QGridLayoutEngine::ensureGeometries(const QLayoutStyleInfo &styleInfo, const QSizeF &size) const { @@ -1553,10 +1719,74 @@ void QGridLayoutEngine::ensureGeometries(const QLayoutStyleInfo &styleInfo, q_widths.resize(columnCount()); q_heights.resize(rowCount()); q_descents.resize(rowCount()); - q_columnData.calculateGeometries(0, columnCount(), size.width(), q_xx.data(), q_widths.data(), - 0, q_totalBoxes[Hor]); - q_rowData.calculateGeometries(0, rowCount(), size.height(), q_yy.data(), q_heights.data(), - q_descents.data(), q_totalBoxes[Ver]); + + + Qt::Orientation orientation = Qt::Vertical; + if (hasDynamicConstraint()) + orientation = constraintOrientation(); + + /* + In order to do hfw we need to first distribute the columns, then the rows. + In order to do wfh we need to first distribute the rows, then the columns. + + If there is no constraint, the order of distributing the rows or columns first is irrelevant. + We choose horizontal just to keep the same behaviour as before (however, there shouldn't + be any behaviour difference). + */ + + QGridLayoutRowData *colData; + QGridLayoutRowData rowData; + qreal *widths; + qreal *heights; + qreal *xx; + qreal *yy; + qreal *xdescents = 0; + qreal *ydescents = 0; + qreal cCount; + qreal rCount; + QSizeF oSize = size; + if (orientation == Qt::Vertical) { + // height for width + colData = &q_columnData; + rowData = q_rowData; + widths = q_widths.data(); + heights = q_heights.data(); + xx = q_xx.data(); + yy = q_yy.data(); + cCount = columnCount(); + rCount = rowCount(); + ydescents = q_descents.data(); + } else { + // width for height + colData = &q_rowData; + rowData = q_columnData; + widths = q_heights.data(); + heights = q_widths.data(); + xx = q_yy.data(); + yy = q_xx.data(); + cCount = rowCount(); + rCount = columnCount(); + xdescents = q_descents.data(); + oSize.transpose(); + } + + colData->calculateGeometries(0, cCount, oSize.width(), xx, widths, + xdescents, q_totalBoxes[orientation == Qt::Horizontal]); + for (int i = q_items.count() - 1; i >= 0; --i) { + QGridLayoutItem *item = q_items.at(i); + const int col = item->firstColumn(orientation); + const int row = item->firstRow(orientation); + if (item->hasDynamicConstraint()) { + const qreal sz = widths[col]; + QGridLayoutBox box = item->box(orientation, sz); + rowData.boxes[row].combine(box); + } + } + + QGridLayoutBox &totalBox = q_totalBoxes[orientation == Qt::Vertical]; + totalBox = rowData.totalBox(0, rCount); + rowData.calculateGeometries(0, rCount, oSize.height(), yy, heights, + ydescents, totalBox); q_cachedSize = size; } diff --git a/src/gui/graphicsview/qgridlayoutengine_p.h b/src/gui/graphicsview/qgridlayoutengine_p.h index a4ef21d..55451d7 100644 --- a/src/gui/graphicsview/qgridlayoutengine_p.h +++ b/src/gui/graphicsview/qgridlayoutengine_p.h @@ -91,6 +91,14 @@ enum LayoutSide { Bottom }; +enum { + NoConstraint, + HorizontalConstraint, + VerticalConstraint, + UnknownConstraint, // need to update cache + UnfeasibleConstraint // not feasible, it be has some items with Vertical and others with Horizontal constraints +}; + template <typename T> class QLayoutParameter { @@ -270,6 +278,10 @@ public: inline void setAlignment(Qt::Alignment alignment) { q_alignment = alignment; } QSizePolicy::Policy sizePolicy(Qt::Orientation orientation) const; + + bool hasDynamicConstraint() const; + Qt::Orientation dynamicConstraintOrientation() const; + QSizePolicy::ControlTypes controlTypes(LayoutSide side) const; QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const; QGridLayoutBox box(Qt::Orientation orientation, qreal constraint = -1.0) const; @@ -280,7 +292,7 @@ public: void setGeometry(const QRectF &rect); void transpose(); void insertOrRemoveRows(int row, int delta, Qt::Orientation orientation = Qt::Vertical); - QSizeF effectiveMaxSize() const; + QSizeF effectiveMaxSize(const QSizeF &constraint) const; #ifdef QT_DEBUG void dump(int indent = 0) const; @@ -373,6 +385,14 @@ public: int column, int rowSpan, int columnSpan) const; QSizeF sizeHint(const QLayoutStyleInfo &styleInfo, Qt::SizeHint which, const QSizeF &constraint) const; + + // heightForWidth / widthForHeight support + QSizeF dynamicallyConstrainedSizeHint(Qt::SizeHint which, const QSizeF &constraint) const; + bool ensureDynamicConstraint() const; + bool hasDynamicConstraint() const; + Qt::Orientation constraintOrientation() const; + + QSizePolicy::ControlTypes controlTypes(LayoutSide side) const; void transpose(); void setVisualDirection(Qt::LayoutDirection direction); @@ -406,6 +426,7 @@ private: // Lazily computed from the above user input mutable int q_cachedEffectiveFirstRows[NOrientations]; mutable int q_cachedEffectiveLastRows[NOrientations]; + mutable quint8 q_cachedConstraintOrientation : 2; // Layout item input mutable QLayoutStyleInfo q_cachedDataForStyleInfo; |