Add Horizontal Layout class.
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=692743
This commit is contained in:
Matias Valdenegro Toro
parent
569e685e66
commit
4f778d6e2d
213
widgets/hboxlayout.cpp
Executable file
213
widgets/hboxlayout.cpp
Executable file
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/*
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* Copyright (C) 2007 by Matias Valdenegro T. <mvaldenegro@informatica.utem.cl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "hboxlayout.h"
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#include <QtCore/QList>
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#include <KDebug>
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namespace Plasma
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{
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class HBoxLayout::Private
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{
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public:
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Private() {}
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~Private() {}
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QRectF geometry;
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QList<LayoutItem *> childList;
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};
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HBoxLayout::HBoxLayout(LayoutItem *parent)
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: Layout(parent),
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d(new Private)
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{
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}
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HBoxLayout::~HBoxLayout()
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{
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foreach (LayoutItem *l, d->childList) {
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l->resetLayout();
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}
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delete d;
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}
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Qt::Orientations HBoxLayout::expandingDirections() const
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{
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return Qt::Horizontal;
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}
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QSizeF HBoxLayout::minimumSize() const
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{
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return QSizeF();
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}
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QSizeF HBoxLayout::maximumSize() const
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{
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return QSizeF();
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}
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bool HBoxLayout::hasHeightForWidth() const
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{
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return true;
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}
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qreal HBoxLayout::heightForWidth(qreal w) const
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{
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return qreal();
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}
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QRectF HBoxLayout::geometry() const
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{
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return d->geometry;
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}
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void HBoxLayout::setGeometry(const QRectF& geometry)
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{
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if (!geometry.isValid() || geometry.isEmpty()) {
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kDebug() << "Invalid Geometry " << geometry << endl;
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return;
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}
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kDebug() << this << " Geometry process " << geometry << " for " << d->childList.count() << " childrens"<< endl;
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QList<LayoutItem *> children;
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QList<LayoutItem *> expandingChildren;
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QList<QSizeF> sizes;
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QSizeF available = geometry.size() - QSizeF(2 * margin(), 2 * margin());
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foreach (LayoutItem *l, d->childList) {
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kDebug() << "testing layout item " << l << endl;
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if (l->expandingDirections() & Qt::Horizontal) {
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expandingChildren += l;
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} else {
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children += l;
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}
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}
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foreach (LayoutItem *l, children) {
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QSizeF hint = l->sizeHint();
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sizes.insert(indexOf(l), QSizeF(available.width(), hint.height()));
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available -= QSizeF(hint.width() + spacing(), 0.0f);
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}
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qreal expandWidth = (available.width() - ((expandingChildren.count() - 1) * spacing())) / expandingChildren.count();
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foreach (LayoutItem *l, expandingChildren) {
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sizes.insert(indexOf(l), QSizeF(expandWidth, available.height()));
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}
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QPointF start = QPointF(0.0f, 0.0f);
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start += QPointF(margin(), spacing());
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for (int i = 0; i < sizes.size(); i++) {
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LayoutItem *l = itemAt(i);
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kDebug() << "Setting Geometry for child " << l << " to " << QRectF(start, sizes[i]) << endl;
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l->setGeometry(QRectF(start, sizes[i]));
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start += QPointF(sizes[i].width() + spacing(), 0.0);
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}
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d->geometry = geometry;
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}
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QSizeF HBoxLayout::sizeHint() const
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{
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qreal hintHeight = 0.0;
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qreal hintWidth = 0.0;
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foreach(LayoutItem *l, d->childList) {
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QSizeF hint = l->sizeHint();
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hintHeight = qMax(hint.height(), hintHeight);
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hintWidth += hint.width() + spacing();
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}
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return QSizeF(hintWidth, hintHeight);
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}
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int HBoxLayout::count() const
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{
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return d->childList.count();
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}
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bool HBoxLayout::isEmpty() const
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{
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return count() == 0;
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}
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void HBoxLayout::insertItem(int index, LayoutItem *l)
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{
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if (!l) {
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return;
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}
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l->setLayout(this);
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d->childList.insert(index, l);
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setGeometry(geometry());
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}
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void HBoxLayout::addItem(LayoutItem *l)
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{
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if (!l) {
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return;
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}
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l->setLayout(this);
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d->childList.append(l);
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qDebug("Added Child LayoutItem : %p", l);
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setGeometry(geometry());
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}
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void HBoxLayout::removeItem(LayoutItem *l)
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{
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d->childList.removeAll(l);
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}
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int HBoxLayout::indexOf(LayoutItem *l) const
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{
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return d->childList.indexOf(l);
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}
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LayoutItem *HBoxLayout::itemAt(int i) const
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{
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return d->childList[i];
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}
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LayoutItem *HBoxLayout::takeAt(int i)
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{
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return d->childList.takeAt(i);
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setGeometry(geometry());
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}
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QSizeF HBoxLayout::size() const
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{
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return geometry().size();
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}
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}
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88
widgets/hboxlayout.h
Executable file
88
widgets/hboxlayout.h
Executable file
@ -0,0 +1,88 @@
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/*
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* Copyright (C) 2007 by Matias Valdenegro T. <mvaldenegro@informatica.utem.cl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __H_BOX_LAYOUT__
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#define __H_BOX_LAYOUT__
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#include <QtCore/QRectF>
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#include <QtCore/QSizeF>
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#include <plasma/plasma_export.h>
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#include <plasma/widgets/layout.h>
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namespace Plasma
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{
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/**
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* Vertical Box Layout
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*
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* @author Matias Valdenegro T. <mvaldenegro@informatica.utem.cl>
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*
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* This class implements a Horizontal Box Layout, it just lays items horizontally, from left to right.
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*/
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class PLASMA_EXPORT HBoxLayout : public Layout
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{
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public:
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/**
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* Constructor.
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*/
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HBoxLayout(LayoutItem *parent = 0);
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/**
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* Virtual Destructor.
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*/
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virtual ~HBoxLayout();
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Qt::Orientations expandingDirections() const;
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QSizeF minimumSize() const;
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QSizeF maximumSize() const;
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bool hasHeightForWidth() const;
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qreal heightForWidth(qreal w) const;
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QRectF geometry() const;
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void setGeometry(const QRectF& geometry);
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QSizeF sizeHint() const;
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int count() const;
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bool isEmpty() const;
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void insertItem(int index, LayoutItem *l);
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void addItem(LayoutItem *l);
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void removeItem(LayoutItem *l);
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int indexOf(LayoutItem *l) const;
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LayoutItem *itemAt(int i) const;
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LayoutItem *takeAt(int i);
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QSizeF size() const;
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private:
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class Private;
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Private *const d;
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};
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}
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#endif /* __H_BOX_LAYOUT__ */
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