--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/declarative/cppextensions/qgraphicslayouts/graphicsLayouts/graphicslayouts.cpp Thu Jul 22 16:41:55 2010 +0100
@@ -0,0 +1,365 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+** the names of its contributors may be used to endorse or promote
+** products derived from this software without specific prior written
+** permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "graphicslayouts_p.h"
+
+#include <QtGui/qgraphicswidget.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+LinearLayoutAttached::LinearLayoutAttached(QObject *parent)
+: QObject(parent), _stretch(1), _alignment(Qt::AlignCenter), _spacing(0)
+{
+}
+
+void LinearLayoutAttached::setStretchFactor(int f)
+{
+ if (_stretch == f)
+ return;
+
+ _stretch = f;
+ emit stretchChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _stretch);
+}
+
+void LinearLayoutAttached::setSpacing(int s)
+{
+ if (_spacing == s)
+ return;
+
+ _spacing = s;
+ emit spacingChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _spacing);
+}
+
+void LinearLayoutAttached::setAlignment(Qt::Alignment a)
+{
+ if (_alignment == a)
+ return;
+
+ _alignment = a;
+ emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment);
+}
+
+QGraphicsLinearLayoutStretchItemObject::QGraphicsLinearLayoutStretchItemObject(QObject *parent)
+ : QObject(parent)
+{
+}
+
+QSizeF QGraphicsLinearLayoutStretchItemObject::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
+{
+Q_UNUSED(which);
+Q_UNUSED(constraint);
+return QSizeF();
+}
+
+
+QGraphicsLinearLayoutObject::QGraphicsLinearLayoutObject(QObject *parent)
+: QObject(parent)
+{
+}
+
+QGraphicsLinearLayoutObject::~QGraphicsLinearLayoutObject()
+{
+}
+
+void QGraphicsLinearLayoutObject::insertLayoutItem(int index, QGraphicsLayoutItem *item)
+{
+insertItem(index, item);
+
+//connect attached properties
+if (LinearLayoutAttached *obj = attachedProperties.value(item)) {
+ setStretchFactor(item, obj->stretchFactor());
+ setAlignment(item, obj->alignment());
+ updateSpacing(item, obj->spacing());
+ QObject::connect(obj, SIGNAL(stretchChanged(QGraphicsLayoutItem*,int)),
+ this, SLOT(updateStretch(QGraphicsLayoutItem*,int)));
+ QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment)),
+ this, SLOT(updateAlignment(QGraphicsLayoutItem*,Qt::Alignment)));
+ QObject::connect(obj, SIGNAL(spacingChanged(QGraphicsLayoutItem*,int)),
+ this, SLOT(updateSpacing(QGraphicsLayoutItem*,int)));
+ //### need to disconnect when widget is removed?
+}
+}
+
+//### is there a better way to do this?
+void QGraphicsLinearLayoutObject::clearChildren()
+{
+for (int i = 0; i < count(); ++i)
+ removeAt(i);
+}
+
+qreal QGraphicsLinearLayoutObject::contentsMargin() const
+{
+ qreal a,b,c,d;
+ getContentsMargins(&a, &b, &c, &d);
+ if(a==b && a==c && a==d)
+ return a;
+ return -1;
+}
+
+void QGraphicsLinearLayoutObject::setContentsMargin(qreal m)
+{
+ setContentsMargins(m,m,m,m);
+}
+
+void QGraphicsLinearLayoutObject::updateStretch(QGraphicsLayoutItem *item, int stretch)
+{
+QGraphicsLinearLayout::setStretchFactor(item, stretch);
+}
+
+void QGraphicsLinearLayoutObject::updateSpacing(QGraphicsLayoutItem* item, int spacing)
+{
+ for(int i=0; i < count(); i++){
+ if(itemAt(i) == item){ //I do not see the reverse function, which is why we must loop over all items
+ QGraphicsLinearLayout::setItemSpacing(i, spacing);
+ return;
+ }
+ }
+}
+
+void QGraphicsLinearLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)
+{
+QGraphicsLinearLayout::setAlignment(item, alignment);
+}
+
+QHash<QGraphicsLayoutItem*, LinearLayoutAttached*> QGraphicsLinearLayoutObject::attachedProperties;
+LinearLayoutAttached *QGraphicsLinearLayoutObject::qmlAttachedProperties(QObject *obj)
+{
+// ### This is not allowed - you must attach to any object
+if (!qobject_cast<QGraphicsLayoutItem*>(obj))
+ return 0;
+LinearLayoutAttached *rv = new LinearLayoutAttached(obj);
+attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv);
+return rv;
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////
+// QGraphicsGridLayout-related classes
+//////////////////////////////////////////////////////////////////////////////////////////////////////
+GridLayoutAttached::GridLayoutAttached(QObject *parent)
+: QObject(parent), _row(-1), _column(-1), _rowspan(1), _colspan(1), _alignment(-1), _rowstretch(-1),
+ _colstretch(-1), _rowspacing(-1), _colspacing(-1), _rowprefheight(-1), _rowmaxheight(-1), _rowminheight(-1),
+ _rowfixheight(-1), _colprefwidth(-1), _colmaxwidth(-1), _colminwidth(-1), _colfixwidth(-1)
+{
+}
+
+void GridLayoutAttached::setRow(int r)
+{
+ if (_row == r)
+ return;
+
+ _row = r;
+ //emit rowChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _row);
+}
+
+void GridLayoutAttached::setColumn(int c)
+{
+ if (_column == c)
+ return;
+
+ _column = c;
+ //emit columnChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _column);
+}
+
+void GridLayoutAttached::setRowSpan(int rs)
+{
+ if (_rowspan == rs)
+ return;
+
+ _rowspan = rs;
+ //emit rowSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _rowSpan);
+}
+
+void GridLayoutAttached::setColumnSpan(int cs)
+{
+ if (_colspan == cs)
+ return;
+
+ _colspan = cs;
+ //emit columnSpanChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _columnSpan);
+}
+
+void GridLayoutAttached::setAlignment(Qt::Alignment a)
+{
+ if (_alignment == a)
+ return;
+
+ _alignment = a;
+ emit alignmentChanged(reinterpret_cast<QGraphicsLayoutItem*>(parent()), _alignment);
+}
+
+void GridLayoutAttached::setRowStretchFactor(int f)
+{
+ _rowstretch = f;
+}
+
+void GridLayoutAttached::setColumnStretchFactor(int f)
+{
+ _colstretch = f;
+}
+
+void GridLayoutAttached::setRowSpacing(int s)
+{
+ _rowspacing = s;
+}
+
+void GridLayoutAttached::setColumnSpacing(int s)
+{
+ _colspacing = s;
+}
+
+
+QGraphicsGridLayoutObject::QGraphicsGridLayoutObject(QObject *parent)
+: QObject(parent)
+{
+}
+
+QGraphicsGridLayoutObject::~QGraphicsGridLayoutObject()
+{
+}
+
+void QGraphicsGridLayoutObject::addWidget(QGraphicsWidget *wid)
+{
+//use attached properties
+if (QObject *obj = attachedProperties.value(qobject_cast<QGraphicsLayoutItem*>(wid))) {
+ int row = static_cast<GridLayoutAttached *>(obj)->row();
+ int column = static_cast<GridLayoutAttached *>(obj)->column();
+ int rowSpan = static_cast<GridLayoutAttached *>(obj)->rowSpan();
+ int columnSpan = static_cast<GridLayoutAttached *>(obj)->columnSpan();
+ if (row == -1 || column == -1) {
+ qWarning() << "Must set row and column for an item in a grid layout";
+ return;
+ }
+ addItem(wid, row, column, rowSpan, columnSpan);
+}
+}
+
+void QGraphicsGridLayoutObject::addLayoutItem(QGraphicsLayoutItem *item)
+{
+//use attached properties
+if (GridLayoutAttached *obj = attachedProperties.value(item)) {
+ int row = obj->row();
+ int column = obj->column();
+ int rowSpan = obj->rowSpan();
+ int columnSpan = obj->columnSpan();
+ Qt::Alignment alignment = obj->alignment();
+ if (row == -1 || column == -1) {
+ qWarning() << "Must set row and column for an item in a grid layout";
+ return;
+ }
+ if(obj->rowSpacing() != -1)
+ setRowSpacing(row, obj->rowSpacing());
+ if(obj->columnSpacing() != -1)
+ setColumnSpacing(column, obj->columnSpacing());
+ if(obj->rowStretchFactor() != -1)
+ setRowStretchFactor(row, obj->rowStretchFactor());
+ if(obj->columnStretchFactor() != -1)
+ setColumnStretchFactor(column, obj->columnStretchFactor());
+ if(obj->rowPreferredHeight() != -1)
+ setRowPreferredHeight(row, obj->rowPreferredHeight());
+ if(obj->rowMaximumHeight() != -1)
+ setRowMaximumHeight(row, obj->rowMaximumHeight());
+ if(obj->rowMinimumHeight() != -1)
+ setRowMinimumHeight(row, obj->rowMinimumHeight());
+ if(obj->rowFixedHeight() != -1)
+ setRowFixedHeight(row, obj->rowFixedHeight());
+ if(obj->columnPreferredWidth() != -1)
+ setColumnPreferredWidth(row, obj->columnPreferredWidth());
+ if(obj->columnMaximumWidth() != -1)
+ setColumnMaximumWidth(row, obj->columnMaximumWidth());
+ if(obj->columnMinimumWidth() != -1)
+ setColumnMinimumWidth(row, obj->columnMinimumWidth());
+ if(obj->columnFixedWidth() != -1)
+ setColumnFixedWidth(row, obj->columnFixedWidth());
+ addItem(item, row, column, rowSpan, columnSpan);
+ if (alignment != -1)
+ setAlignment(item,alignment);
+ QObject::connect(obj, SIGNAL(alignmentChanged(QGraphicsLayoutItem*,Qt::Alignment)),
+ this, SLOT(updateAlignment(QGraphicsLayoutItem*,Qt::Alignment)));
+ //### need to disconnect when widget is removed?
+}
+}
+
+//### is there a better way to do this?
+void QGraphicsGridLayoutObject::clearChildren()
+{
+for (int i = 0; i < count(); ++i)
+ removeAt(i);
+}
+
+qreal QGraphicsGridLayoutObject::spacing() const
+{
+if (verticalSpacing() == horizontalSpacing())
+ return verticalSpacing();
+return -1; //###
+}
+
+qreal QGraphicsGridLayoutObject::contentsMargin() const
+{
+ qreal a,b,c,d;
+ getContentsMargins(&a, &b, &c, &d);
+ if(a==b && a==c && a==d)
+ return a;
+ return -1;
+}
+
+void QGraphicsGridLayoutObject::setContentsMargin(qreal m)
+{
+ setContentsMargins(m,m,m,m);
+}
+
+
+void QGraphicsGridLayoutObject::updateAlignment(QGraphicsLayoutItem *item, Qt::Alignment alignment)
+{
+QGraphicsGridLayout::setAlignment(item, alignment);
+}
+
+QHash<QGraphicsLayoutItem*, GridLayoutAttached*> QGraphicsGridLayoutObject::attachedProperties;
+GridLayoutAttached *QGraphicsGridLayoutObject::qmlAttachedProperties(QObject *obj)
+{
+// ### This is not allowed - you must attach to any object
+if (!qobject_cast<QGraphicsLayoutItem*>(obj))
+ return 0;
+GridLayoutAttached *rv = new GridLayoutAttached(obj);
+attachedProperties.insert(qobject_cast<QGraphicsLayoutItem*>(obj), rv);
+return rv;
+}
+
+QT_END_NAMESPACE