210 lines
4.0 KiB
C++
210 lines
4.0 KiB
C++
/*
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* Copyright 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 as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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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 "layout.h"
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#include <math.h>
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#include <QtCore/QList>
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#include <QtCore/QTimeLine>
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#include <QtDebug>
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#include "widgets/widget.h"
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#include "layouts/layoutanimator.h"
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namespace Plasma
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{
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class Layout::Private
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{
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public:
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Private(LayoutItem* p)
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: leftMargin(12.0),
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rightMargin(12.0),
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topMargin(12.0),
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bottomMargin(12.0),
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spacing(6.0),
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parent(p),
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animator(0),
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relayouting(false)
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{
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}
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~Private() {}
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qreal leftMargin;
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qreal rightMargin;
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qreal topMargin;
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qreal bottomMargin;
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qreal spacing;
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LayoutItem *parent;
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LayoutAnimator *animator;
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bool relayouting;
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};
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Layout::Layout(LayoutItem *parent)
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: LayoutItem(),
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d(new Private(parent))
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{
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if (parent) {
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parent->setLayout(this);
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}
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}
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void Layout::setParent(LayoutItem *parent) {
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d->parent = parent;
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}
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Layout::~Layout()
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{
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if (parent()) {
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parent()->setLayout(0);
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}
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delete d;
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}
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bool Layout::isEmpty() const
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{
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return count() == 0;
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}
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void Layout::update()
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{
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setGeometry(geometry());
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}
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void Layout::invalidate()
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{
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if (d->relayouting) {
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return;
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}
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d->relayouting = true;
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// find and update the top level layout
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Layout *layout = this;
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Layout *parentLayout = 0;
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do {
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parentLayout = dynamic_cast<Layout*>(layout->parent());
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if (parentLayout) {
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layout = parentLayout;
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}
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} while (parentLayout);
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layout->update();
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d->relayouting = false;
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}
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LayoutAnimator* Layout::animator() const
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{
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return d->animator;
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}
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void Layout::setAnimator(LayoutAnimator *animator)
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{
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d->animator = animator;
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}
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qreal Layout::margin(MarginEdge edge) const
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{
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switch (edge) {
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case LeftMargin:
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return d->leftMargin;
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break;
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case RightMargin:
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return d->rightMargin;
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break;
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case TopMargin:
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return d->topMargin;
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break;
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case BottomMargin:
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return d->bottomMargin;
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break;
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}
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return 0;
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}
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void Layout::setMargin(MarginEdge edge, qreal m)
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{
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switch (edge) {
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case LeftMargin:
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d->leftMargin = m;
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break;
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case RightMargin:
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d->rightMargin = m;
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break;
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case TopMargin:
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d->topMargin = m;
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break;
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case BottomMargin:
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d->bottomMargin = m;
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break;
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}
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}
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void Layout::setMargin(qreal m)
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{
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d->leftMargin = m;
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d->rightMargin = m;
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d->topMargin = m;
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d->bottomMargin = m;
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}
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qreal Layout::spacing() const
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{
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return d->spacing;
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}
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void Layout::setSpacing(qreal s)
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{
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d->spacing = s;
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}
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LayoutItem *Layout::parent() const
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{
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return d->parent;
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}
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QSizeF Layout::minimumSize() const
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{
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return QSizeF(0,0);
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}
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QSizeF Layout::maximumSize() const
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{
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return QSizeF(INFINITY,INFINITY);
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}
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void Layout::startAnimation()
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{
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if (animator() && animator()->timeLine()) {
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animator()->timeLine()->setCurrentTime(0);
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if (animator()->timeLine()->state() == QTimeLine::NotRunning) {
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animator()->timeLine()->start();
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}
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}
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}
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}
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