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Diffstat (limited to 'src/gui/kernel/qboxlayout.cpp')
| -rw-r--r-- | src/gui/kernel/qboxlayout.cpp | 1550 |
1 files changed, 0 insertions, 1550 deletions
diff --git a/src/gui/kernel/qboxlayout.cpp b/src/gui/kernel/qboxlayout.cpp deleted file mode 100644 index da353dcc01..0000000000 --- a/src/gui/kernel/qboxlayout.cpp +++ /dev/null @@ -1,1550 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qboxlayout.h" -#include "qapplication.h" -#include "qwidget.h" -#include "qlist.h" -#include "qsizepolicy.h" -#include "qvector.h" - -#include "qlayoutengine_p.h" -#include "qlayout_p.h" - -QT_BEGIN_NAMESPACE - -/* - Returns true if the \a widget can be added to the \a layout; - otherwise returns false. -*/ -static bool checkWidget(QLayout *layout, QWidget *widget) -{ - if (!widget) { - qWarning("QLayout: Cannot add null widget to %s/%s", layout->metaObject()->className(), - layout->objectName().toLocal8Bit().data()); - return false; - } - return true; -} - -struct QBoxLayoutItem -{ - QBoxLayoutItem(QLayoutItem *it, int stretch_ = 0) - : item(it), stretch(stretch_), magic(false) { } - ~QBoxLayoutItem() { delete item; } - - int hfw(int w) { - if (item->hasHeightForWidth()) { - return item->heightForWidth(w); - } else { - return item->sizeHint().height(); - } - } - int mhfw(int w) { - if (item->hasHeightForWidth()) { - return item->heightForWidth(w); - } else { - return item->minimumSize().height(); - } - } - int hStretch() { - if (stretch == 0 && item->widget()) { - return item->widget()->sizePolicy().horizontalStretch(); - } else { - return stretch; - } - } - int vStretch() { - if (stretch == 0 && item->widget()) { - return item->widget()->sizePolicy().verticalStretch(); - } else { - return stretch; - } - } - - QLayoutItem *item; - int stretch; - bool magic; -}; - -class QBoxLayoutPrivate : public QLayoutPrivate -{ - Q_DECLARE_PUBLIC(QBoxLayout) -public: - QBoxLayoutPrivate() : hfwWidth(-1), dirty(true), spacing(-1) { } - ~QBoxLayoutPrivate(); - - void setDirty() { - geomArray.clear(); - hfwWidth = -1; - hfwHeight = -1; - dirty = true; - } - - QList<QBoxLayoutItem *> list; - QVector<QLayoutStruct> geomArray; - int hfwWidth; - int hfwHeight; - int hfwMinHeight; - QSize sizeHint; - QSize minSize; - QSize maxSize; - int leftMargin, topMargin, rightMargin, bottomMargin; - Qt::Orientations expanding; - uint hasHfw : 1; - uint dirty : 1; - QBoxLayout::Direction dir; - int spacing; - - inline void deleteAll() { while (!list.isEmpty()) delete list.takeFirst(); } - - void setupGeom(); - void calcHfw(int); - - void effectiveMargins(int *left, int *top, int *right, int *bottom) const; -}; - -QBoxLayoutPrivate::~QBoxLayoutPrivate() -{ -} - -static inline bool horz(QBoxLayout::Direction dir) -{ - return dir == QBoxLayout::RightToLeft || dir == QBoxLayout::LeftToRight; -} - -/** - * The purpose of this function is to make sure that widgets are not laid out outside its layout. - * E.g. the layoutItemRect margins are only meant to take of the surrounding margins/spacings. - * However, if the margin is 0, it can easily cover the area of a widget above it. - */ -void QBoxLayoutPrivate::effectiveMargins(int *left, int *top, int *right, int *bottom) const -{ - int l = leftMargin; - int t = topMargin; - int r = rightMargin; - int b = bottomMargin; -#ifdef Q_WS_MAC - Q_Q(const QBoxLayout); - if (horz(dir)) { - QBoxLayoutItem *leftBox = 0; - QBoxLayoutItem *rightBox = 0; - - if (left || right) { - leftBox = list.value(0); - rightBox = list.value(list.count() - 1); - if (dir == QBoxLayout::RightToLeft) - qSwap(leftBox, rightBox); - - int leftDelta = 0; - int rightDelta = 0; - if (leftBox) { - QLayoutItem *itm = leftBox->item; - if (QWidget *w = itm->widget()) - leftDelta = itm->geometry().left() - w->geometry().left(); - } - if (rightBox) { - QLayoutItem *itm = rightBox->item; - if (QWidget *w = itm->widget()) - rightDelta = w->geometry().right() - itm->geometry().right(); - } - QWidget *w = q->parentWidget(); - Qt::LayoutDirection layoutDirection = w ? w->layoutDirection() : QApplication::layoutDirection(); - if (layoutDirection == Qt::RightToLeft) - qSwap(leftDelta, rightDelta); - - l = qMax(l, leftDelta); - r = qMax(r, rightDelta); - } - - int count = top || bottom ? list.count() : 0; - for (int i = 0; i < count; ++i) { - QBoxLayoutItem *box = list.at(i); - QLayoutItem *itm = box->item; - QWidget *w = itm->widget(); - if (w) { - QRect lir = itm->geometry(); - QRect wr = w->geometry(); - if (top) - t = qMax(t, lir.top() - wr.top()); - if (bottom) - b = qMax(b, wr.bottom() - lir.bottom()); - } - } - } else { // vertical layout - QBoxLayoutItem *topBox = 0; - QBoxLayoutItem *bottomBox = 0; - - if (top || bottom) { - topBox = list.value(0); - bottomBox = list.value(list.count() - 1); - if (dir == QBoxLayout::BottomToTop) { - qSwap(topBox, bottomBox); - } - - if (top && topBox) { - QLayoutItem *itm = topBox->item; - QWidget *w = itm->widget(); - if (w) - t = qMax(t, itm->geometry().top() - w->geometry().top()); - } - - if (bottom && bottomBox) { - QLayoutItem *itm = bottomBox->item; - QWidget *w = itm->widget(); - if (w) - b = qMax(b, w->geometry().bottom() - itm->geometry().bottom()); - } - } - - int count = left || right ? list.count() : 0; - for (int i = 0; i < count; ++i) { - QBoxLayoutItem *box = list.at(i); - QLayoutItem *itm = box->item; - QWidget *w = itm->widget(); - if (w) { - QRect lir = itm->geometry(); - QRect wr = w->geometry(); - if (left) - l = qMax(l, lir.left() - wr.left()); - if (right) - r = qMax(r, wr.right() - lir.right()); - } - } - } -#endif - if (left) - *left = l; - if (top) - *top = t; - if (right) - *right = r; - if (bottom) - *bottom = b; -} - - -/* - Initializes the data structure needed by qGeomCalc and - recalculates max/min and size hint. -*/ -void QBoxLayoutPrivate::setupGeom() -{ - if (!dirty) - return; - - Q_Q(QBoxLayout); - int maxw = horz(dir) ? 0 : QLAYOUTSIZE_MAX; - int maxh = horz(dir) ? QLAYOUTSIZE_MAX : 0; - int minw = 0; - int minh = 0; - int hintw = 0; - int hinth = 0; - - bool horexp = false; - bool verexp = false; - - hasHfw = false; - - int n = list.count(); - geomArray.clear(); - QVector<QLayoutStruct> a(n); - - QSizePolicy::ControlTypes controlTypes1; - QSizePolicy::ControlTypes controlTypes2; - int fixedSpacing = q->spacing(); - int previousNonEmptyIndex = -1; - - QStyle *style = 0; - if (fixedSpacing < 0) { - if (QWidget *parentWidget = q->parentWidget()) - style = parentWidget->style(); - } - - for (int i = 0; i < n; i++) { - QBoxLayoutItem *box = list.at(i); - QSize max = box->item->maximumSize(); - QSize min = box->item->minimumSize(); - QSize hint = box->item->sizeHint(); - Qt::Orientations exp = box->item->expandingDirections(); - bool empty = box->item->isEmpty(); - int spacing = 0; - - if (!empty) { - if (fixedSpacing >= 0) { - spacing = (previousNonEmptyIndex >= 0) ? fixedSpacing : 0; -#ifdef Q_WS_MAC - if (!horz(dir) && previousNonEmptyIndex >= 0) { - QBoxLayoutItem *sibling = (dir == QBoxLayout::TopToBottom ? box : list.at(previousNonEmptyIndex)); - if (sibling) { - QWidget *wid = sibling->item->widget(); - if (wid) - spacing = qMax(spacing, sibling->item->geometry().top() - wid->geometry().top()); - } - } -#endif - } else { - controlTypes1 = controlTypes2; - controlTypes2 = box->item->controlTypes(); - if (previousNonEmptyIndex >= 0) { - QSizePolicy::ControlTypes actual1 = controlTypes1; - QSizePolicy::ControlTypes actual2 = controlTypes2; - if (dir == QBoxLayout::RightToLeft || dir == QBoxLayout::BottomToTop) - qSwap(actual1, actual2); - - if (style) { - spacing = style->combinedLayoutSpacing(actual1, actual2, - horz(dir) ? Qt::Horizontal : Qt::Vertical, - 0, q->parentWidget()); - if (spacing < 0) - spacing = 0; - } - } - } - - if (previousNonEmptyIndex >= 0) - a[previousNonEmptyIndex].spacing = spacing; - previousNonEmptyIndex = i; - } - - bool ignore = empty && box->item->widget(); // ignore hidden widgets - bool dummy = true; - if (horz(dir)) { - bool expand = (exp & Qt::Horizontal || box->stretch > 0); - horexp = horexp || expand; - maxw += spacing + max.width(); - minw += spacing + min.width(); - hintw += spacing + hint.width(); - if (!ignore) - qMaxExpCalc(maxh, verexp, dummy, - max.height(), exp & Qt::Vertical, box->item->isEmpty()); - minh = qMax(minh, min.height()); - hinth = qMax(hinth, hint.height()); - - a[i].sizeHint = hint.width(); - a[i].maximumSize = max.width(); - a[i].minimumSize = min.width(); - a[i].expansive = expand; - a[i].stretch = box->stretch ? box->stretch : box->hStretch(); - } else { - bool expand = (exp & Qt::Vertical || box->stretch > 0); - verexp = verexp || expand; - maxh += spacing + max.height(); - minh += spacing + min.height(); - hinth += spacing + hint.height(); - if (!ignore) - qMaxExpCalc(maxw, horexp, dummy, - max.width(), exp & Qt::Horizontal, box->item->isEmpty()); - minw = qMax(minw, min.width()); - hintw = qMax(hintw, hint.width()); - - a[i].sizeHint = hint.height(); - a[i].maximumSize = max.height(); - a[i].minimumSize = min.height(); - a[i].expansive = expand; - a[i].stretch = box->stretch ? box->stretch : box->vStretch(); - } - - a[i].empty = empty; - a[i].spacing = 0; // might be be initialized with a non-zero value in a later iteration - hasHfw = hasHfw || box->item->hasHeightForWidth(); - } - - geomArray = a; - - expanding = (Qt::Orientations) - ((horexp ? Qt::Horizontal : 0) - | (verexp ? Qt::Vertical : 0)); - - minSize = QSize(minw, minh); - maxSize = QSize(maxw, maxh).expandedTo(minSize); - sizeHint = QSize(hintw, hinth).expandedTo(minSize).boundedTo(maxSize); - - q->getContentsMargins(&leftMargin, &topMargin, &rightMargin, &bottomMargin); - int left, top, right, bottom; - effectiveMargins(&left, &top, &right, &bottom); - QSize extra(left + right, top + bottom); - - minSize += extra; - maxSize += extra; - sizeHint += extra; - - dirty = false; -} - -/* - Calculates and stores the preferred height given the width \a w. -*/ -void QBoxLayoutPrivate::calcHfw(int w) -{ - QVector<QLayoutStruct> &a = geomArray; - int n = a.count(); - int h = 0; - int mh = 0; - - Q_ASSERT(n == list.size()); - - if (horz(dir)) { - qGeomCalc(a, 0, n, 0, w); - for (int i = 0; i < n; i++) { - QBoxLayoutItem *box = list.at(i); - h = qMax(h, box->hfw(a.at(i).size)); - mh = qMax(mh, box->mhfw(a.at(i).size)); - } - } else { - for (int i = 0; i < n; ++i) { - QBoxLayoutItem *box = list.at(i); - int spacing = a.at(i).spacing; - h += box->hfw(w); - mh += box->mhfw(w); - h += spacing; - mh += spacing; - } - } - hfwWidth = w; - hfwHeight = h; - hfwMinHeight = mh; -} - - -/*! - \class QBoxLayout - - \brief The QBoxLayout class lines up child widgets horizontally or - vertically. - - \ingroup geomanagement - - QBoxLayout takes the space it gets (from its parent layout or from - the parentWidget()), divides it up into a row of boxes, and makes - each managed widget fill one box. - - \image qhboxlayout-with-5-children.png Horizontal box layout with five child widgets - - If the QBoxLayout's orientation is Qt::Horizontal the boxes are - placed in a row, with suitable sizes. Each widget (or other box) - will get at least its minimum size and at most its maximum size. - Any excess space is shared according to the stretch factors (more - about that below). - - \image qvboxlayout-with-5-children.png Vertical box layout with five child widgets - - If the QBoxLayout's orientation is Qt::Vertical, the boxes are - placed in a column, again with suitable sizes. - - The easiest way to create a QBoxLayout is to use one of the - convenience classes, e.g. QHBoxLayout (for Qt::Horizontal boxes) - or QVBoxLayout (for Qt::Vertical boxes). You can also use the - QBoxLayout constructor directly, specifying its direction as - LeftToRight, RightToLeft, TopToBottom, or BottomToTop. - - If the QBoxLayout is not the top-level layout (i.e. it is not - managing all of the widget's area and children), you must add it - to its parent layout before you can do anything with it. The - normal way to add a layout is by calling - parentLayout-\>addLayout(). - - Once you have done this, you can add boxes to the QBoxLayout using - one of four functions: - - \list - \o addWidget() to add a widget to the QBoxLayout and set the - widget's stretch factor. (The stretch factor is along the row of - boxes.) - - \o addSpacing() to create an empty box; this is one of the - functions you use to create nice and spacious dialogs. See below - for ways to set margins. - - \o addStretch() to create an empty, stretchable box. - - \o addLayout() to add a box containing another QLayout to the row - and set that layout's stretch factor. - \endlist - - Use insertWidget(), insertSpacing(), insertStretch() or - insertLayout() to insert a box at a specified position in the - layout. - - QBoxLayout also includes two margin widths: - - \list - \o setContentsMargins() sets the width of the outer border on - each side of the widget. This is the width of the reserved space - along each of the QBoxLayout's four sides. - \o setSpacing() sets the width between neighboring boxes. (You - can use addSpacing() to get more space at a particular spot.) - \endlist - - The margin default is provided by the style. The default margin - most Qt styles specify is 9 for child widgets and 11 for windows. - The spacing defaults to the same as the margin width for a - top-level layout, or to the same as the parent layout. - - To remove a widget from a layout, call removeWidget(). Calling - QWidget::hide() on a widget also effectively removes the widget - from the layout until QWidget::show() is called. - - You will almost always want to use QVBoxLayout and QHBoxLayout - rather than QBoxLayout because of their convenient constructors. - - \sa QGridLayout, QStackedLayout, {Layout Management} -*/ - -/*! - \enum QBoxLayout::Direction - - This type is used to determine the direction of a box layout. - - \value LeftToRight Horizontal from left to right. - \value RightToLeft Horizontal from right to left. - \value TopToBottom Vertical from top to bottom. - \value BottomToTop Vertical from bottom to top. - - \omitvalue Down - \omitvalue Up -*/ - -/*! - Constructs a new QBoxLayout with direction \a dir and parent widget \a - parent. - - \sa direction() -*/ -QBoxLayout::QBoxLayout(Direction dir, QWidget *parent) - : QLayout(*new QBoxLayoutPrivate, 0, parent) -{ - Q_D(QBoxLayout); - d->dir = dir; -} - -#ifdef QT3_SUPPORT -/*! - Constructs a new QBoxLayout with direction \a dir and main widget \a - parent. \a parent may not be 0. - - The \a margin is the number of pixels between the edge of the - widget and its managed children. The \a spacing is the default - number of pixels between neighboring children. If \a spacing is -1 - the value of \a margin is used for \a spacing. - - \a name is the internal object name. - - \sa direction() -*/ -QBoxLayout::QBoxLayout(QWidget *parent, Direction dir, - int margin, int spacing, const char *name) - : QLayout(*new QBoxLayoutPrivate, 0, parent) -{ - Q_D(QBoxLayout); - d->dir = dir; - setMargin(margin); - setObjectName(QString::fromAscii(name)); - setSpacing(spacing<0 ? margin : spacing); -} - -/*! - Constructs a new QBoxLayout called \a name, with direction \a dir, - and inserts it into \a parentLayout. - - The \a spacing is the default number of pixels between neighboring - children. If \a spacing is -1, the layout will inherit its - parent's spacing(). -*/ -QBoxLayout::QBoxLayout(QLayout *parentLayout, Direction dir, int spacing, - const char *name) - : QLayout(*new QBoxLayoutPrivate, parentLayout, 0) -{ - Q_D(QBoxLayout); - d->dir = dir; - setObjectName(QString::fromAscii(name)); - setSpacing(spacing); -} - -/*! - Constructs a new QBoxLayout called \a name, with direction \a dir. - - If \a spacing is -1, the layout will inherit its parent's - spacing(); otherwise \a spacing is used. - - You must insert this box into another layout. -*/ -QBoxLayout::QBoxLayout(Direction dir, int spacing, const char *name) - : QLayout(*new QBoxLayoutPrivate,0, 0) -{ - Q_D(QBoxLayout); - d->dir = dir; - setObjectName(QString::fromAscii(name)); - setSpacing(spacing); -} -#endif // QT3_SUPPORT - - -/*! - Destroys this box layout. - - The layout's widgets aren't destroyed. -*/ -QBoxLayout::~QBoxLayout() -{ - Q_D(QBoxLayout); - d->deleteAll(); // must do it before QObject deletes children, so can't be in ~QBoxLayoutPrivate -} - -/*! - Reimplements QLayout::spacing(). If the spacing property is - valid, that value is returned. Otherwise, a value for the spacing - property is computed and returned. Since layout spacing in a widget - is style dependent, if the parent is a widget, it queries the style - for the (horizontal or vertical) spacing of the layout. Otherwise, - the parent is a layout, and it queries the parent layout for the - spacing(). - - \sa QLayout::spacing(), setSpacing() - */ -int QBoxLayout::spacing() const -{ - Q_D(const QBoxLayout); - if (d->spacing >=0) { - return d->spacing; - } else { - return qSmartSpacing(this, d->dir == LeftToRight || d->dir == RightToLeft - ? QStyle::PM_LayoutHorizontalSpacing - : QStyle::PM_LayoutVerticalSpacing); - } -} - -/*! - Reimplements QLayout::setSpacing(). Sets the spacing - property to \a spacing. - - \sa QLayout::setSpacing(), spacing() - */ -void QBoxLayout::setSpacing(int spacing) -{ - Q_D(QBoxLayout); - d->spacing = spacing; - invalidate(); -} - -/*! - \reimp -*/ -QSize QBoxLayout::sizeHint() const -{ - Q_D(const QBoxLayout); - if (d->dirty) - const_cast<QBoxLayout*>(this)->d_func()->setupGeom(); - return d->sizeHint; -} - -/*! - \reimp -*/ -QSize QBoxLayout::minimumSize() const -{ - Q_D(const QBoxLayout); - if (d->dirty) - const_cast<QBoxLayout*>(this)->d_func()->setupGeom(); - return d->minSize; -} - -/*! - \reimp -*/ -QSize QBoxLayout::maximumSize() const -{ - Q_D(const QBoxLayout); - if (d->dirty) - const_cast<QBoxLayout*>(this)->d_func()->setupGeom(); - - QSize s = d->maxSize.boundedTo(QSize(QLAYOUTSIZE_MAX, QLAYOUTSIZE_MAX)); - - if (alignment() & Qt::AlignHorizontal_Mask) - s.setWidth(QLAYOUTSIZE_MAX); - if (alignment() & Qt::AlignVertical_Mask) - s.setHeight(QLAYOUTSIZE_MAX); - return s; -} - -/*! - \reimp -*/ -bool QBoxLayout::hasHeightForWidth() const -{ - Q_D(const QBoxLayout); - if (d->dirty) - const_cast<QBoxLayout*>(this)->d_func()->setupGeom(); - return d->hasHfw; -} - -/*! - \reimp -*/ -int QBoxLayout::heightForWidth(int w) const -{ - Q_D(const QBoxLayout); - if (!hasHeightForWidth()) - return -1; - - int left, top, right, bottom; - d->effectiveMargins(&left, &top, &right, &bottom); - - w -= left + right; - if (w != d->hfwWidth) - const_cast<QBoxLayout*>(this)->d_func()->calcHfw(w); - - return d->hfwHeight + top + bottom; -} - -/*! - \reimp -*/ -int QBoxLayout::minimumHeightForWidth(int w) const -{ - Q_D(const QBoxLayout); - (void) heightForWidth(w); - int top, bottom; - d->effectiveMargins(0, &top, 0, &bottom); - return d->hasHfw ? (d->hfwMinHeight + top + bottom) : -1; -} - -/*! - Resets cached information. -*/ -void QBoxLayout::invalidate() -{ - Q_D(QBoxLayout); - d->setDirty(); - QLayout::invalidate(); -} - -/*! - \reimp -*/ -int QBoxLayout::count() const -{ - Q_D(const QBoxLayout); - return d->list.count(); -} - -/*! - \reimp -*/ -QLayoutItem *QBoxLayout::itemAt(int index) const -{ - Q_D(const QBoxLayout); - return index >= 0 && index < d->list.count() ? d->list.at(index)->item : 0; -} - -/*! - \reimp -*/ -QLayoutItem *QBoxLayout::takeAt(int index) -{ - Q_D(QBoxLayout); - if (index < 0 || index >= d->list.count()) - return 0; - QBoxLayoutItem *b = d->list.takeAt(index); - QLayoutItem *item = b->item; - b->item = 0; - delete b; - - invalidate(); - return item; -} - - -/*! - \reimp -*/ -Qt::Orientations QBoxLayout::expandingDirections() const -{ - Q_D(const QBoxLayout); - if (d->dirty) - const_cast<QBoxLayout*>(this)->d_func()->setupGeom(); - return d->expanding; -} - -/*! - \reimp -*/ -void QBoxLayout::setGeometry(const QRect &r) -{ - Q_D(QBoxLayout); - if (d->dirty || r != geometry()) { - QRect oldRect = geometry(); - QLayout::setGeometry(r); - if (d->dirty) - d->setupGeom(); - QRect cr = alignment() ? alignmentRect(r) : r; - - int left, top, right, bottom; - d->effectiveMargins(&left, &top, &right, &bottom); - QRect s(cr.x() + left, cr.y() + top, - cr.width() - (left + right), - cr.height() - (top + bottom)); - - QVector<QLayoutStruct> a = d->geomArray; - int pos = horz(d->dir) ? s.x() : s.y(); - int space = horz(d->dir) ? s.width() : s.height(); - int n = a.count(); - if (d->hasHfw && !horz(d->dir)) { - for (int i = 0; i < n; i++) { - QBoxLayoutItem *box = d->list.at(i); - if (box->item->hasHeightForWidth()) { - int width = qBound(box->item->minimumSize().width(), s.width(), box->item->maximumSize().width()); - a[i].sizeHint = a[i].minimumSize = - box->item->heightForWidth(width); - } - } - } - - Direction visualDir = d->dir; - QWidget *parent = parentWidget(); - if (parent && parent->isRightToLeft()) { - if (d->dir == LeftToRight) - visualDir = RightToLeft; - else if (d->dir == RightToLeft) - visualDir = LeftToRight; - } - - qGeomCalc(a, 0, n, pos, space); - - bool reverse = (horz(visualDir) - ? ((r.right() > oldRect.right()) != (visualDir == RightToLeft)) - : r.bottom() > oldRect.bottom()); - for (int j = 0; j < n; j++) { - int i = reverse ? n-j-1 : j; - QBoxLayoutItem *box = d->list.at(i); - - switch (visualDir) { - case LeftToRight: - box->item->setGeometry(QRect(a.at(i).pos, s.y(), a.at(i).size, s.height())); - break; - case RightToLeft: - box->item->setGeometry(QRect(s.left() + s.right() - a.at(i).pos - a.at(i).size + 1, - s.y(), a.at(i).size, s.height())); - break; - case TopToBottom: - box->item->setGeometry(QRect(s.x(), a.at(i).pos, s.width(), a.at(i).size)); - break; - case BottomToTop: - box->item->setGeometry(QRect(s.x(), - s.top() + s.bottom() - a.at(i).pos - a.at(i).size + 1, - s.width(), a.at(i).size)); - } - } - } -} - -/*! - \reimp -*/ -void QBoxLayout::addItem(QLayoutItem *item) -{ - Q_D(QBoxLayout); - QBoxLayoutItem *it = new QBoxLayoutItem(item); - d->list.append(it); - invalidate(); -} - -/*! - Inserts \a item into this box layout at position \a index. If \a - index is negative, the item is added at the end. - - \sa addItem(), insertWidget(), insertLayout(), insertStretch(), - insertSpacing() -*/ -void QBoxLayout::insertItem(int index, QLayoutItem *item) -{ - Q_D(QBoxLayout); - if (index < 0) // append - index = d->list.count(); - - QBoxLayoutItem *it = new QBoxLayoutItem(item); - d->list.insert(index, it); - invalidate(); -} - -/*! - Inserts a non-stretchable space (a QSpacerItem) at position \a index, with - size \a size. If \a index is negative the space is added at the end. - - The box layout has default margin and spacing. This function adds - additional space. - - \sa addSpacing(), insertItem(), QSpacerItem -*/ -void QBoxLayout::insertSpacing(int index, int size) -{ - Q_D(QBoxLayout); - if (index < 0) // append - index = d->list.count(); - - QLayoutItem *b; - if (horz(d->dir)) - b = QLayoutPrivate::createSpacerItem(this, size, 0, QSizePolicy::Fixed, QSizePolicy::Minimum); - else - b = QLayoutPrivate::createSpacerItem(this, 0, size, QSizePolicy::Minimum, QSizePolicy::Fixed); - - QT_TRY { - QBoxLayoutItem *it = new QBoxLayoutItem(b); - it->magic = true; - d->list.insert(index, it); - - } QT_CATCH(...) { - delete b; - QT_RETHROW; - } - invalidate(); -} - -/*! - Inserts a stretchable space (a QSpacerItem) at position \a - index, with zero minimum size and stretch factor \a stretch. If \a - index is negative the space is added at the end. - - \sa addStretch(), insertItem(), QSpacerItem -*/ -void QBoxLayout::insertStretch(int index, int stretch) -{ - Q_D(QBoxLayout); - if (index < 0) // append - index = d->list.count(); - - QLayoutItem *b; - if (horz(d->dir)) - b = QLayoutPrivate::createSpacerItem(this, 0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum); - else - b = QLayoutPrivate::createSpacerItem(this, 0, 0, QSizePolicy::Minimum, QSizePolicy::Expanding); - - QBoxLayoutItem *it = new QBoxLayoutItem(b, stretch); - it->magic = true; - d->list.insert(index, it); - invalidate(); -} - -/*! - \since 4.4 - - Inserts \a spacerItem at position \a index, with zero minimum - size and stretch factor. If \a index is negative the - space is added at the end. - - \sa addSpacerItem(), insertStretch(), insertSpacing() -*/ -void QBoxLayout::insertSpacerItem(int index, QSpacerItem *spacerItem) -{ - Q_D(QBoxLayout); - if (index < 0) // append - index = d->list.count(); - - QBoxLayoutItem *it = new QBoxLayoutItem(spacerItem); - it->magic = true; - d->list.insert(index, it); - invalidate(); -} - -/*! - Inserts \a layout at position \a index, with stretch factor \a - stretch. If \a index is negative, the layout is added at the end. - - \a layout becomes a child of the box layout. - - \sa addLayout(), insertItem() -*/ -void QBoxLayout::insertLayout(int index, QLayout *layout, int stretch) -{ - Q_D(QBoxLayout); - addChildLayout(layout); - if (index < 0) // append - index = d->list.count(); - QBoxLayoutItem *it = new QBoxLayoutItem(layout, stretch); - d->list.insert(index, it); - invalidate(); -} - -/*! - Inserts \a widget at position \a index, with stretch factor \a - stretch and alignment \a alignment. If \a index is negative, the - widget is added at the end. - - The stretch factor applies only in the \l{direction()}{direction} - of the QBoxLayout, and is relative to the other boxes and widgets - in this QBoxLayout. Widgets and boxes with higher stretch factors - grow more. - - If the stretch factor is 0 and nothing else in the QBoxLayout has - a stretch factor greater than zero, the space is distributed - according to the QWidget:sizePolicy() of each widget that's - involved. - - The alignment is specified by \a alignment. The default alignment - is 0, which means that the widget fills the entire cell. - - \sa addWidget(), insertItem() -*/ -void QBoxLayout::insertWidget(int index, QWidget *widget, int stretch, - Qt::Alignment alignment) -{ - Q_D(QBoxLayout); - if (!checkWidget(this, widget)) - return; - addChildWidget(widget); - if (index < 0) // append - index = d->list.count(); - QWidgetItem *b = QLayoutPrivate::createWidgetItem(this, widget); - b->setAlignment(alignment); - - QBoxLayoutItem *it; - QT_TRY{ - it = new QBoxLayoutItem(b, stretch); - } QT_CATCH(...) { - delete b; - QT_RETHROW; - } - - QT_TRY{ - d->list.insert(index, it); - } QT_CATCH(...) { - delete it; - QT_RETHROW; - } - invalidate(); -} - -/*! - Adds a non-stretchable space (a QSpacerItem) with size \a size - to the end of this box layout. QBoxLayout provides default margin - and spacing. This function adds additional space. - - \sa insertSpacing(), addItem(), QSpacerItem -*/ -void QBoxLayout::addSpacing(int size) -{ - insertSpacing(-1, size); -} - -/*! - Adds a stretchable space (a QSpacerItem) with zero minimum - size and stretch factor \a stretch to the end of this box layout. - - \sa insertStretch(), addItem(), QSpacerItem -*/ -void QBoxLayout::addStretch(int stretch) -{ - insertStretch(-1, stretch); -} - -/*! - \since 4.4 - - Adds \a spacerItem to the end of this box layout. - - \sa addSpacing(), addStretch() -*/ -void QBoxLayout::addSpacerItem(QSpacerItem *spacerItem) -{ - insertSpacerItem(-1, spacerItem); -} - -/*! - Adds \a widget to the end of this box layout, with a stretch - factor of \a stretch and alignment \a alignment. - - The stretch factor applies only in the \l{direction()}{direction} - of the QBoxLayout, and is relative to the other boxes and widgets - in this QBoxLayout. Widgets and boxes with higher stretch factors - grow more. - - If the stretch factor is 0 and nothing else in the QBoxLayout has - a stretch factor greater than zero, the space is distributed - according to the QWidget:sizePolicy() of each widget that's - involved. - - The alignment is specified by \a alignment. The default - alignment is 0, which means that the widget fills the entire cell. - - \sa insertWidget(), addItem(), addLayout(), addStretch(), - addSpacing(), addStrut() -*/ -void QBoxLayout::addWidget(QWidget *widget, int stretch, Qt::Alignment alignment) -{ - insertWidget(-1, widget, stretch, alignment); -} - -/*! - Adds \a layout to the end of the box, with serial stretch factor - \a stretch. - - \sa insertLayout(), addItem(), addWidget() -*/ -void QBoxLayout::addLayout(QLayout *layout, int stretch) -{ - insertLayout(-1, layout, stretch); -} - -/*! - Limits the perpendicular dimension of the box (e.g. height if the - box is \l LeftToRight) to a minimum of \a size. Other constraints - may increase the limit. - - \sa addItem() -*/ -void QBoxLayout::addStrut(int size) -{ - Q_D(QBoxLayout); - QLayoutItem *b; - if (horz(d->dir)) - b = QLayoutPrivate::createSpacerItem(this, 0, size, QSizePolicy::Fixed, QSizePolicy::Minimum); - else - b = QLayoutPrivate::createSpacerItem(this, size, 0, QSizePolicy::Minimum, QSizePolicy::Fixed); - - QBoxLayoutItem *it = new QBoxLayoutItem(b); - it->magic = true; - d->list.append(it); - invalidate(); -} - -/*! - \fn int QBoxLayout::findWidget(QWidget *widget) - - Use indexOf(\a widget) instead. -*/ - -/*! - Sets the stretch factor for \a widget to \a stretch and returns - true if \a widget is found in this layout (not including child - layouts); otherwise returns false. - - \sa setAlignment() -*/ -bool QBoxLayout::setStretchFactor(QWidget *widget, int stretch) -{ - Q_D(QBoxLayout); - if (!widget) - return false; - for (int i = 0; i < d->list.size(); ++i) { - QBoxLayoutItem *box = d->list.at(i); - if (box->item->widget() == widget) { - box->stretch = stretch; - invalidate(); - return true; - } - } - return false; -} - -/*! - \overload - - Sets the stretch factor for the layout \a layout to \a stretch and - returns true if \a layout is found in this layout (not including - child layouts); otherwise returns false. -*/ -bool QBoxLayout::setStretchFactor(QLayout *layout, int stretch) -{ - Q_D(QBoxLayout); - for (int i = 0; i < d->list.size(); ++i) { - QBoxLayoutItem *box = d->list.at(i); - if (box->item->layout() == layout) { - if (box->stretch != stretch) { - box->stretch = stretch; - invalidate(); - } - return true; - } - } - return false; -} - -/*! - Sets the stretch factor at position \a index. to \a stretch. - - \since 4.5 -*/ - -void QBoxLayout::setStretch(int index, int stretch) -{ - Q_D(QBoxLayout); - if (index >= 0 && index < d->list.size()) { - QBoxLayoutItem *box = d->list.at(index); - if (box->stretch != stretch) { - box->stretch = stretch; - invalidate(); - } - } -} - -/*! - Returns the stretch factor at position \a index. - - \since 4.5 -*/ - -int QBoxLayout::stretch(int index) const -{ - Q_D(const QBoxLayout); - if (index >= 0 && index < d->list.size()) - return d->list.at(index)->stretch; - return -1; -} - -/*! - Sets the direction of this layout to \a direction. -*/ -void QBoxLayout::setDirection(Direction direction) -{ - Q_D(QBoxLayout); - if (d->dir == direction) - return; - if (horz(d->dir) != horz(direction)) { - //swap around the spacers (the "magic" bits) - //#### a bit yucky, knows too much. - //#### probably best to add access functions to spacerItem - //#### or even a QSpacerItem::flip() - for (int i = 0; i < d->list.size(); ++i) { - QBoxLayoutItem *box = d->list.at(i); - if (box->magic) { - QSpacerItem *sp = box->item->spacerItem(); - if (sp) { - if (sp->expandingDirections() == Qt::Orientations(0) /*No Direction*/) { - //spacing or strut - QSize s = sp->sizeHint(); - sp->changeSize(s.height(), s.width(), - horz(direction) ? QSizePolicy::Fixed:QSizePolicy::Minimum, - horz(direction) ? QSizePolicy::Minimum:QSizePolicy::Fixed); - - } else { - //stretch - if (horz(direction)) - sp->changeSize(0, 0, QSizePolicy::Expanding, - QSizePolicy::Minimum); - else - sp->changeSize(0, 0, QSizePolicy::Minimum, - QSizePolicy::Expanding); - } - } - } - } - } - d->dir = direction; - invalidate(); -} - -/*! - \fn QBoxLayout::Direction QBoxLayout::direction() const - - Returns the direction of the box. addWidget() and addSpacing() - work in this direction; the stretch stretches in this direction. - - \sa QBoxLayout::Direction addWidget() addSpacing() -*/ - -QBoxLayout::Direction QBoxLayout::direction() const -{ - Q_D(const QBoxLayout); - return d->dir; -} - -/*! - \class QHBoxLayout - \brief The QHBoxLayout class lines up widgets horizontally. - - \ingroup geomanagement - - This class is used to construct horizontal box layout objects. See - QBoxLayout for details. - - The simplest use of the class is like this: - - \snippet doc/src/snippets/layouts/layouts.cpp 0 - \snippet doc/src/snippets/layouts/layouts.cpp 1 - \snippet doc/src/snippets/layouts/layouts.cpp 2 - \codeline - \snippet doc/src/snippets/layouts/layouts.cpp 3 - \snippet doc/src/snippets/layouts/layouts.cpp 4 - \snippet doc/src/snippets/layouts/layouts.cpp 5 - - First, we create the widgets we want in the layout. Then, we - create the QHBoxLayout object and add the widgets into the - layout. Finally, we call QWidget::setLayout() to install the - QHBoxLayout object onto the widget. At that point, the widgets in - the layout are reparented to have \c window as their parent. - - \image qhboxlayout-with-5-children.png Horizontal box layout with five child widgets - - \sa QVBoxLayout, QGridLayout, QStackedLayout, {Layout Management}, {Basic Layouts Example} -*/ - - -/*! - Constructs a new top-level horizontal box with - parent \a parent. -*/ -QHBoxLayout::QHBoxLayout(QWidget *parent) - : QBoxLayout(LeftToRight, parent) -{ -} - -/*! - Constructs a new horizontal box. You must add - it to another layout. -*/ -QHBoxLayout::QHBoxLayout() - : QBoxLayout(LeftToRight) -{ -} - - - -#ifdef QT3_SUPPORT -/*! - Constructs a new top-level horizontal box called \a name, with - parent \a parent. - - The \a margin is the number of pixels between the edge of the - widget and its managed children. The \a spacing is the default - number of pixels between neighboring children. If \a spacing is -1 - the value of \a margin is used for \a spacing. -*/ -QHBoxLayout::QHBoxLayout(QWidget *parent, int margin, - int spacing, const char *name) - : QBoxLayout(LeftToRight, parent) -{ - setMargin(margin); - setSpacing(spacing<0 ? margin : spacing); - setObjectName(QString::fromAscii(name)); -} - -/*! - Constructs a new horizontal box called name \a name and adds it to - \a parentLayout. - - The \a spacing is the default number of pixels between neighboring - children. If \a spacing is -1, this QHBoxLayout will inherit its - parent's spacing(). -*/ -QHBoxLayout::QHBoxLayout(QLayout *parentLayout, int spacing, - const char *name) - : QBoxLayout(LeftToRight) -{ - setSpacing(spacing); - setObjectName(QString::fromAscii(name)); - if (parentLayout) { - setParent(parentLayout); - parentLayout->addItem(this); - } -} - -/*! - Constructs a new horizontal box called name \a name. You must add - it to another layout. - - The \a spacing is the default number of pixels between neighboring - children. If \a spacing is -1, this QHBoxLayout will inherit its - parent's spacing(). -*/ -QHBoxLayout::QHBoxLayout(int spacing, const char *name) - : QBoxLayout(LeftToRight) -{ - setSpacing(spacing); - setObjectName(QString::fromAscii(name)); -} -#endif - - -/*! - Destroys this box layout. - - The layout's widgets aren't destroyed. -*/ -QHBoxLayout::~QHBoxLayout() -{ -} - -/*! - \class QVBoxLayout - \brief The QVBoxLayout class lines up widgets vertically. - - \ingroup geomanagement - - This class is used to construct vertical box layout objects. See - QBoxLayout for details. - - The simplest use of the class is like this: - - \snippet doc/src/snippets/layouts/layouts.cpp 6 - \snippet doc/src/snippets/layouts/layouts.cpp 7 - \snippet doc/src/snippets/layouts/layouts.cpp 8 - \codeline - \snippet doc/src/snippets/layouts/layouts.cpp 9 - \snippet doc/src/snippets/layouts/layouts.cpp 10 - \snippet doc/src/snippets/layouts/layouts.cpp 11 - - First, we create the widgets we want in the layout. Then, we - create the QVBoxLayout object and add the widgets into the - layout. Finally, we call QWidget::setLayout() to install the - QVBoxLayout object onto the widget. At that point, the widgets in - the layout are reparented to have \c window as their parent. - - \image qvboxlayout-with-5-children.png Horizontal box layout with five child widgets - - \sa QHBoxLayout, QGridLayout, QStackedLayout, {Layout Management}, {Basic Layouts Example} -*/ - -/*! - Constructs a new top-level vertical box with - parent \a parent. -*/ -QVBoxLayout::QVBoxLayout(QWidget *parent) - : QBoxLayout(TopToBottom, parent) -{ -} - -/*! - Constructs a new vertical box. You must add - it to another layout. - -*/ -QVBoxLayout::QVBoxLayout() - : QBoxLayout(TopToBottom) -{ -} - -#ifdef QT3_SUPPORT -/*! - Constructs a new top-level vertical box called \a name, with - parent \a parent. - - The \a margin is the number of pixels between the edge of the - widget and its managed children. The \a spacing is the default - number of pixels between neighboring children. If \a spacing is -1 - the value of \a margin is used for \a spacing. -*/ -QVBoxLayout::QVBoxLayout(QWidget *parent, int margin, int spacing, - const char *name) - : QBoxLayout(TopToBottom, parent) -{ - setMargin(margin); - setSpacing(spacing<0 ? margin : spacing); - setObjectName(QString::fromAscii(name)); -} - -/*! - Constructs a new vertical box called name \a name and adds it to - \a parentLayout. - - The \a spacing is the default number of pixels between neighboring - children. If \a spacing is -1, this QVBoxLayout will inherit its - parent's spacing(). -*/ -QVBoxLayout::QVBoxLayout(QLayout *parentLayout, int spacing, - const char *name) - : QBoxLayout(TopToBottom) -{ - setSpacing(spacing); - setObjectName(QString::fromAscii(name)); - if (parentLayout) { - setParent(parentLayout); - parentLayout->addItem(this); - } -} - -/*! - Constructs a new vertical box called name \a name. You must add - it to another layout. - - The \a spacing is the default number of pixels between neighboring - children. If \a spacing is -1, this QVBoxLayout will inherit its - parent's spacing(). -*/ -QVBoxLayout::QVBoxLayout(int spacing, const char *name) - : QBoxLayout(TopToBottom) -{ - setSpacing(spacing); - setObjectName(QString::fromAscii(name)); -} - - -#endif - -/*! - Destroys this box layout. - - The layout's widgets aren't destroyed. -*/ -QVBoxLayout::~QVBoxLayout() -{ -} - -/*! - \fn QWidget *QLayout::mainWidget() const - - Use parentWidget() instead. -*/ - -/*! - \fn void QLayout::remove(QWidget *widget) - - Use removeWidget(\a widget) instead. -*/ - -/*! - \fn void QLayout::add(QWidget *widget) - - Use addWidget(\a widget) instead. -*/ - -/*! - \fn QLayoutIterator QLayout::iterator() - - Use a QLayoutIterator() constructor instead. -*/ - -/*! - \fn int QLayout::defaultBorder() const - - Use spacing() instead. -*/ - -QT_END_NAMESPACE |