diff options
Diffstat (limited to 'src/widgets/kernel/qformlayout.cpp')
-rw-r--r-- | src/widgets/kernel/qformlayout.cpp | 293 |
1 files changed, 229 insertions, 64 deletions
diff --git a/src/widgets/kernel/qformlayout.cpp b/src/widgets/kernel/qformlayout.cpp index ec1e5e4156..01097b6123 100644 --- a/src/widgets/kernel/qformlayout.cpp +++ b/src/widgets/kernel/qformlayout.cpp @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtWidgets module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qapplication.h" #include "qdebug.h" @@ -49,7 +13,7 @@ QT_BEGIN_NAMESPACE -namespace { +namespace QtPrivate { // Fixed column matrix, stores items as [i11, i12, i21, i22...], // with FORTRAN-style index operator(r, c). template <class T, int NumColumns> @@ -104,13 +68,11 @@ void FixedColumnMatrix<T, NumColumns>::storageIndexToPosition(int idx, int *rowP const uint DefaultFieldGrowthPolicy = 255; const uint DefaultRowWrapPolicy = 255; -enum { ColumnCount = 2 }; - // -- our data structure for our items // This owns the QLayoutItem struct QFormLayoutItem { - QFormLayoutItem(QLayoutItem* i) : item(i), fullRow(false), isHfw(false) { } + QFormLayoutItem(QLayoutItem* i) : item(i) { } ~QFormLayoutItem() { delete item; } // Wrappers @@ -127,37 +89,68 @@ struct QFormLayoutItem void setGeometry(const QRect& r) { item->setGeometry(r); } QRect geometry() const { return item->geometry(); } + void setVisible(bool on); + bool isHidden() const { return !isVisible || (widget() && widget()->isHidden()); } + // For use with FixedColumnMatrix bool operator==(const QFormLayoutItem& other) { return item == other.item; } - QLayoutItem *item; - bool fullRow; + QLayoutItem *item = nullptr; + bool fullRow = false; + bool isVisible = true; // set by updateSizes - bool isHfw; + bool isHfw = false; QSize minSize; QSize sizeHint; QSize maxSize; // also set by updateSizes - int sbsHSpace; // only used for side by side, for the field item only (not label) - int vSpace; // This is the spacing to the item in the row above + int sbsHSpace = -1; // only used for side by side, for the field item only (not label) + int vSpace = -1; // This is the spacing to the item in the row above // set by setupVerticalLayoutData - bool sideBySide; - int vLayoutIndex; + bool sideBySide = false; + int vLayoutIndex = -1; // set by setupHorizontalLayoutData - int layoutPos; - int layoutWidth; + int layoutPos = -1; + int layoutWidth = -1; }; +static void hideOrShowWidgetsInLayout(QLayout *layout, bool on) +{ + for (int i = 0; i < layout->count(); ++i) { + QLayoutItem *item = layout->itemAt(i); + if (QWidget *widget = item->widget()) + widget->setVisible(on); + else if (item->layout()) + hideOrShowWidgetsInLayout(item->layout(), on); + } +} + +void QFormLayoutItem::setVisible(bool on) +{ + isVisible = on; + // Explicitly hide the widget so that it loses focus and + // doesn't automatically get shown again when this layout + // hides and shows. + if (widget()) { + widget()->setVisible(on); + return; + } + // Layouts can't be hidden, so we have to traverse the widgets + // inside and hide all of them so that they also lose focus. + if (layout()) + hideOrShowWidgetsInLayout(layout(), on); +} + class QFormLayoutPrivate : public QLayoutPrivate { Q_DECLARE_PUBLIC(QFormLayout) public: - typedef FixedColumnMatrix<QFormLayoutItem *, ColumnCount> ItemMatrix; + using ItemMatrix = QtPrivate::FixedColumnMatrix<QFormLayoutItem *, 2>; QFormLayoutPrivate(); ~QFormLayoutPrivate() { } @@ -378,23 +371,25 @@ void QFormLayoutPrivate::updateSizes() QSizePolicy::ControlTypes(fldtop ? fldtop->controlTypes() : QSizePolicy::DefaultType); // To be compatible to QGridLayout, we have to compare solitary labels & fields with both predecessors - if (label) { + if (label && !label->isHidden()) { if (!field) { int lblspacing = style->combinedLayoutSpacing(lbltoptypes, lbltypes, Qt::Vertical, nullptr, parent); int fldspacing = style->combinedLayoutSpacing(fldtoptypes, lbltypes, Qt::Vertical, nullptr, parent); label->vSpace = qMax(lblspacing, fldspacing); - } else + } else { label->vSpace = style->combinedLayoutSpacing(lbltoptypes, lbltypes, Qt::Vertical, nullptr, parent); + } } - if (field) { + if (field && !field->isHidden()) { // check spacing against both the previous label and field if (!label) { int lblspacing = style->combinedLayoutSpacing(lbltoptypes, fldtypes, Qt::Vertical, nullptr, parent); int fldspacing = style->combinedLayoutSpacing(fldtoptypes, fldtypes, Qt::Vertical, nullptr, parent); field->vSpace = qMax(lblspacing, fldspacing); - } else + } else { field->vSpace = style->combinedLayoutSpacing(fldtoptypes, fldtypes, Qt::Vertical, nullptr, parent); + } } } } @@ -483,6 +478,7 @@ void QFormLayoutPrivate::recalcHFW(int w) void QFormLayoutPrivate::setupHfwLayoutData() { + Q_Q(QFormLayout); // setupVerticalLayoutData must be called before this // setupHorizontalLayoutData must also be called before this // copies non hfw data into hfw @@ -507,7 +503,11 @@ void QFormLayoutPrivate::setupHfwLayoutData() QFormLayoutItem *label = m_matrix(i, 0); QFormLayoutItem *field = m_matrix(i, 1); - if (label) { + // ignore rows with only hidden items + if (!q->isRowVisible(i)) + continue; + + if (label && label->vLayoutIndex > -1) { if (label->isHfw) { // We don't check sideBySide here, since a label is only // ever side by side with its field @@ -522,7 +522,7 @@ void QFormLayoutPrivate::setupHfwLayoutData() } } - if (field) { + if (field && field->vLayoutIndex > -1) { int hfw = field->isHfw ? field->heightForWidth(field->layoutWidth) : 0; int h = field->isHfw ? hfw : field->sizeHint.height(); int mh = field->isHfw ? hfw : field->minSize.height(); @@ -681,12 +681,18 @@ void QFormLayoutPrivate::setupVerticalLayoutData(int width) bool prevRowSplit = false; for (int i = 0; i < rr; ++i) { - QFormLayoutItem *label = m_matrix(i, 0); + QFormLayoutItem *label = m_matrix(i, 0); QFormLayoutItem *field = m_matrix(i, 1); - // Totally ignore empty rows... - if (!label && !field) + // Ignore empty rows or rows with only hidden items, + // and invalidate their position in the layout. + if (!q->isRowVisible(i)) { + if (label) + label->vLayoutIndex = -1; + if (field) + field->vLayoutIndex = -1; continue; + } QSize min1; QSize min2; @@ -1189,6 +1195,10 @@ QLayoutItem* QFormLayoutPrivate::replaceAt(int index, QLayoutItem *newitem) /*! Constructs a new form layout with the given \a parent widget. + The layout is set directly as the top-level layout for \a parent. + There can be only one top-level layout for a widget. It is returned + by QWidget::layout(). + \sa QWidget::setLayout() */ QFormLayout::QFormLayout(QWidget *parent) @@ -1642,7 +1652,7 @@ void QFormLayout::addItem(QLayoutItem *item) int QFormLayout::count() const { Q_D(const QFormLayout); - return d->m_things.count(); + return d->m_things.size(); } /*! @@ -2189,7 +2199,10 @@ void QFormLayoutPrivate::arrangeWidgets(const QList<QLayoutStruct> &layouts, QRe QFormLayoutItem *label = m_matrix(i, 0); QFormLayoutItem *field = m_matrix(i, 1); - if (label) { + if (!q->isRowVisible(i)) + continue; + + if (label && label->vLayoutIndex > -1) { int height = layouts.at(label->vLayoutIndex).size; if ((label->expandingDirections() & Qt::Vertical) == 0) { /* @@ -2216,7 +2229,7 @@ void QFormLayoutPrivate::arrangeWidgets(const QList<QLayoutStruct> &layouts, QRe label->setGeometry(QStyle::visualRect(layoutDirection, rect, QRect(p, sz))); } - if (field) { + if (field && field->vLayoutIndex > -1) { QSize sz(field->layoutWidth, layouts.at(field->vLayoutIndex).size); QPoint p(field->layoutPos + leftOffset + rect.x(), layouts.at(field->vLayoutIndex).pos); /* @@ -2296,6 +2309,158 @@ void QFormLayout::setItem(int row, ItemRole role, QLayoutItem *item) } /*! + \since 6.4 + + Shows the row \a row if \a on is true, otherwise hides the row. + + \a row must be non-negative and less than rowCount(). + + \sa removeRow(), takeRow() +*/ +void QFormLayout::setRowVisible(int row, bool on) +{ + Q_D(QFormLayout); + QFormLayoutItem *label = d->m_matrix(row, 0); + QFormLayoutItem *field = d->m_matrix(row, 1); + bool change = false; + if (label) { + change = label->isVisible != on; + label->setVisible(on); + } + if (field) { + change |= field->isVisible != on; + field->setVisible(on); + } + if (change) + invalidate(); +} + +/*! + \since 6.4 + + \overload + + Shows the row corresponding to \a widget if \a on is true, + otherwise hides the row. + + \sa removeRow(), takeRow() +*/ +void QFormLayout::setRowVisible(QWidget *widget, bool on) +{ + Q_D(QFormLayout); + if (Q_UNLIKELY(!d->checkWidget(widget))) + return; + + int row; + ItemRole role; + getWidgetPosition(widget, &row, &role); + + if (Q_UNLIKELY(row < 0)) { + qWarning("QFormLayout::setRowVisible: Invalid widget"); + return; + } + + setRowVisible(row, on); +} + +/*! + \since 6.4 + + \overload + + Shows the row corresponding to \a layout if \a on is true, + otherwise hides the row. + + \sa removeRow(), takeRow() +*/ +void QFormLayout::setRowVisible(QLayout *layout, bool on) +{ + Q_D(QFormLayout); + if (Q_UNLIKELY(!d->checkLayout(layout))) + return; + + int row; + ItemRole role; + getLayoutPosition(layout, &row, &role); + + if (Q_UNLIKELY(row < 0)) { + qWarning("QFormLayout::setRowVisible: Invalid layout"); + return; + } + + setRowVisible(row, on); +} + +/*! + \since 6.4 + + Returns true if some items in the row \a row are visible, + otherwise returns false. +*/ +bool QFormLayout::isRowVisible(int row) const +{ + Q_D(const QFormLayout); + QFormLayoutItem *label = d->m_matrix(row, 0); + QFormLayoutItem *field = d->m_matrix(row, 1); + + int visibleItemCount = 2; + if (!label || label->isHidden() || (label->widget() && label->widget()->isHidden())) + --visibleItemCount; + if (!field || field->isHidden() || (field->widget() && field->widget()->isHidden())) + --visibleItemCount; + + return visibleItemCount > 0; +} + +/*! + \since 6.4 + \overload + + Returns true if some items in the row corresponding to \a widget + are visible, otherwise returns false. +*/ +bool QFormLayout::isRowVisible(QWidget *widget) const +{ + Q_D(const QFormLayout); + if (Q_UNLIKELY(!d->checkWidget(widget))) + return false; + int row; + ItemRole role; + getWidgetPosition(widget, &row, &role); + + if (Q_UNLIKELY(row < 0)) { + qWarning("QFormLayout::takeRow: Invalid widget"); + return false; + } + + return isRowVisible(row); +} + +/*! + \since 6.4 + \overload + + Returns true if some items in the row corresponding to \a layout + are visible, otherwise returns false. +*/ +bool QFormLayout::isRowVisible(QLayout *layout) const +{ + Q_D(const QFormLayout); + if (Q_UNLIKELY(!d->checkLayout(layout))) + return false; + int row; + ItemRole role; + getLayoutPosition(layout, &row, &role); + + if (Q_UNLIKELY(row < 0)) { + qWarning("QFormLayout::takeRow: Invalid layout"); + return false; + } + + return isRowVisible(row); +} + +/*! \internal */ |