685 lines
19 KiB
C++
685 lines
19 KiB
C++
/*
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* Copyright 2008 Marco Martin <notmart@gmail.com>
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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 "tabbar.h"
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#include <QGraphicsLinearLayout>
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#include <QGraphicsLayoutItem>
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#include <QGraphicsProxyWidget>
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#include <QGraphicsScene>
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#include <QGraphicsSceneWheelEvent>
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#include <QIcon>
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#include <QMenu>
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#include <QPainter>
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#include <QParallelAnimationGroup>
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#include <QString>
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#include <QStyleOption>
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#include <kdebug.h>
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#include "animator.h"
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#include "animations/animation.h"
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#include "private/nativetabbar_p.h"
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#include "private/themedwidgetinterface_p.h"
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#include "theme.h"
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namespace Plasma
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{
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class TabBarProxy : public QGraphicsProxyWidget
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{
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public:
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TabBarProxy(QGraphicsWidget *parent)
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: QGraphicsProxyWidget(parent)
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{
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native = new NativeTabBar();
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native->setAttribute(Qt::WA_NoSystemBackground);
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setWidget(native);
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setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
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}
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void paint(QPainter *painter,
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const QStyleOptionGraphicsItem *option,
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QWidget *widget)
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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//Don't paint the child widgets
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static_cast<NativeTabBar *>(QGraphicsProxyWidget::widget())->render(
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painter, QPoint(0, 0), QRegion(), 0);
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}
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NativeTabBar *native;
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};
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class TabBarPrivate : public ThemedWidgetInterface<TabBar>
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{
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public:
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TabBarPrivate(TabBar *parent)
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: ThemedWidgetInterface<TabBar>(parent),
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tabProxy(0),
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currentIndex(0),
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tabWidgetMode(true),
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oldPageAnimId(-1),
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newPageAnimId(-1),
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tabBarShown(true)
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{
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}
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~TabBarPrivate()
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{
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}
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void updateTabWidgetMode();
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void slidingCompleted(QGraphicsItem *item);
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void slidingNewPageCompleted();
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void slidingOldPageCompleted();
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void shapeChanged(const KTabBar::Shape shape);
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TabBarProxy *tabProxy;
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QList<QGraphicsWidget *> pages;
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QGraphicsWidget *emptyTabBarSpacer;
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QGraphicsLinearLayout *mainLayout;
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QGraphicsLinearLayout *tabWidgetLayout;
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QGraphicsLinearLayout *tabBarLayout;
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int currentIndex;
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bool tabWidgetMode;
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QWeakPointer<QGraphicsWidget> oldPage;
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QWeakPointer<QGraphicsWidget> newPage;
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int oldPageAnimId;
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int newPageAnimId;
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Animation *oldPageAnim;
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Animation *newPageAnim;
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QParallelAnimationGroup *animGroup;
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bool tabBarShown;
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QWeakPointer<QGraphicsWidget> firstPositionWidget;
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QWeakPointer<QGraphicsWidget> lastPositionWidget;
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};
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void TabBarPrivate::updateTabWidgetMode()
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{
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if (!tabBarShown) {
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return;
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}
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bool tabWidget = false;
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foreach (QGraphicsWidget *page, pages) {
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if (page->preferredSize() != QSize(0, 0)) {
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tabWidget = true;
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break;
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}
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}
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if (tabWidget != tabWidgetMode) {
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if (tabWidget) {
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mainLayout->removeAt(0);
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tabBarLayout->insertItem(1, tabProxy);
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mainLayout->addItem(tabWidgetLayout);
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} else {
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mainLayout->removeAt(0);
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tabBarLayout->removeAt(1);
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mainLayout->addItem(tabProxy);
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}
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}
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//always show the tabbar
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//FIXME: Qt BUG: calling show on a child of an hidden item it shows it anyways
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//so we avoid to call it if the parent is hidden
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if (!tabWidget && q->isVisible()) {
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q->setTabBarShown(true);
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}
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tabWidgetMode = tabWidget;
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if (!tabWidgetMode) {
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q->setMinimumSize(QSize(0, 0));
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q->setMaximumSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
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} else {
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tabProxy->native->setMinimumSize(QSize(0,0));
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tabProxy->setMinimumSize(QSize(0,0));
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}
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}
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void TabBarPrivate::slidingNewPageCompleted()
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{
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if (newPage) {
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tabWidgetLayout->addItem(newPage.data());
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}
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newPageAnimId = -1;
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mainLayout->invalidate();
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emit q->currentChanged(currentIndex);
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q->setFlags(0);
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}
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void TabBarPrivate::slidingOldPageCompleted()
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{
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QGraphicsWidget *item = oldPageAnim->targetWidget();
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oldPageAnimId = -1;
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if (item) {
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item->hide();
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}
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q->setFlags(0);
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}
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void TabBarPrivate::shapeChanged(const QTabBar::Shape shape)
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{
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//FIXME: QGraphicsLinearLayout doesn't have setDirection, so for now
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// North is equal to south and East is equal to West
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switch (shape) {
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case QTabBar::RoundedWest:
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case QTabBar::TriangularWest:
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case QTabBar::RoundedEast:
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case QTabBar::TriangularEast:
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q->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
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tabBarLayout->setOrientation(Qt::Vertical);
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tabWidgetLayout->setOrientation(Qt::Horizontal);
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tabWidgetLayout->itemAt(0)->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
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if (tabWidgetLayout->count() > 1) {
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tabWidgetLayout->itemAt(1)->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
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}
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tabProxy->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
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break;
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case QTabBar::RoundedSouth:
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case QTabBar::TriangularSouth:
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case QTabBar::RoundedNorth:
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case QTabBar::TriangularNorth:
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default:
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q->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
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tabBarLayout->setOrientation(Qt::Horizontal);
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tabWidgetLayout->setOrientation(Qt::Vertical);
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tabWidgetLayout->itemAt(0)->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
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if (tabWidgetLayout->count() > 1) {
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tabWidgetLayout->itemAt(1)->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
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}
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tabProxy->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
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}
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tabProxy->setPreferredSize(tabProxy->native->sizeHint());
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}
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TabBar::TabBar(QGraphicsWidget *parent)
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: QGraphicsWidget(parent),
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d(new TabBarPrivate(this))
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{
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
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setContentsMargins(0,0,0,0);
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d->tabProxy = new TabBarProxy(this);
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d->tabWidgetLayout = new QGraphicsLinearLayout(Qt::Vertical);
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d->tabBarLayout = new QGraphicsLinearLayout(Qt::Horizontal);
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d->tabWidgetLayout->setContentsMargins(0,0,0,0);
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d->mainLayout = new QGraphicsLinearLayout(Qt::Horizontal);
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d->mainLayout->addItem(d->tabWidgetLayout);
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setLayout(d->mainLayout);
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d->mainLayout->setContentsMargins(0,0,0,0);
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//simulate a page until there isn't one
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//needed to make the widget resize well when there are no tab added
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d->emptyTabBarSpacer = new QGraphicsWidget(this);
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d->tabWidgetLayout->addItem(d->tabBarLayout);
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d->tabWidgetLayout->addItem(d->emptyTabBarSpacer);
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//tabBar is centered, so a stretch at begin one at the end
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d->tabBarLayout->addStretch();
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d->tabBarLayout->addItem(d->tabProxy);
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d->tabBarLayout->addStretch();
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d->tabBarLayout->setContentsMargins(0,0,0,0);
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//d->tabBarLayout->setStretchFactor(d->tabProxy, 2);
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d->newPageAnim = Animator::create(Animator::SlideAnimation);
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d->oldPageAnim = Animator::create(Animator::SlideAnimation);
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d->animGroup = new QParallelAnimationGroup(this);
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d->animGroup->addAnimation(d->newPageAnim);
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d->animGroup->addAnimation(d->oldPageAnim);
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connect(d->tabProxy->native, SIGNAL(currentChanged(int)),
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this, SLOT(setCurrentIndex(int)));
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connect(d->tabProxy->native, SIGNAL(shapeChanged(QTabBar::Shape)),
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this, SLOT(shapeChanged(QTabBar::Shape)));
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connect(d->newPageAnim, SIGNAL(finished()), this, SLOT(slidingNewPageCompleted()));
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connect(d->oldPageAnim, SIGNAL(finished()), this, SLOT(slidingOldPageCompleted()));
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d->initTheming();
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}
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TabBar::~TabBar()
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{
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delete d;
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}
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int TabBar::insertTab(int index, const QIcon &icon, const QString &label,
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QGraphicsLayoutItem *content)
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{
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QGraphicsWidget *page = new QGraphicsWidget(this);
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page->setContentsMargins(0,0,0,0);
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page->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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if (content) {
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if (content->isLayout()) {
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page->setLayout(static_cast<QGraphicsLayout *>(content));
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} else {
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QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical, page);
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layout->setContentsMargins(0,0,0,0);
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layout->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
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layout->addItem(content);
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page->setLayout(layout);
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}
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} else {
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page->setPreferredSize(0, 0);
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}
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d->pages.insert(qBound(0, index, d->pages.count()), page);
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if (d->pages.count() == 1) {
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d->tabWidgetLayout->removeItem(d->emptyTabBarSpacer);
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d->tabWidgetLayout->addItem(page);
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page->setVisible(true);
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page->setEnabled(true);
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} else {
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page->setVisible(false);
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page->setEnabled(false);
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}
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d->tabProxy->setPreferredSize(d->tabProxy->native->sizeHint());
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d->updateTabWidgetMode();
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int actualIndex = d->tabProxy->native->insertTab(index, icon, label);
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d->currentIndex = d->tabProxy->native->currentIndex();
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d->tabProxy->setPreferredSize(d->tabProxy->native->sizeHint());
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d->updateTabWidgetMode();
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return actualIndex;
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}
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int TabBar::insertTab(int index, const QString &label, QGraphicsLayoutItem *content)
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{
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return insertTab(index, QIcon(), label, content);
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}
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int TabBar::addTab(const QIcon &icon, const QString &label, QGraphicsLayoutItem *content)
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{
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return insertTab(d->pages.count(), icon, label, content);
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}
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int TabBar::addTab(const QString &label, QGraphicsLayoutItem *content)
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{
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return insertTab(d->pages.count(), QIcon(), label, content);
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}
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int TabBar::currentIndex() const
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{
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return d->tabProxy->native->currentIndex();
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}
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void TabBar::resizeEvent(QGraphicsSceneResizeEvent * event)
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{
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if (!d->tabWidgetMode) {
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d->tabProxy->setMinimumSize(event->newSize().toSize());
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setMinimumSize(QSize(0, 0));
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setMinimumHeight(d->tabProxy->widget()->minimumSizeHint().height());
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setMaximumSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
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} else {
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setMinimumSize(QSize(-1, -1));
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d->tabProxy->native->setMinimumSize(QSize(0,0));
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}
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}
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void TabBar::setCurrentIndex(int index)
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{
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if (index >= d->pages.count() ||
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d->pages.count() < 2 ||
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d->currentIndex == index) {
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return;
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}
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d->oldPage = d->pages.value(d->currentIndex);
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if (d->oldPage) {
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d->tabWidgetLayout->removeItem(d->oldPage.data());
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}
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if (index >= 0) {
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d->newPage = d->pages.value(index);
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}
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setFlags(QGraphicsItem::ItemClipsChildrenToShape);
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//if an animation was in rogress hide everything to avoid an inconsistent state
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if (d->animGroup->state() != QAbstractAnimation::Stopped) {
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foreach (QGraphicsWidget *page, d->pages) {
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page->hide();
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}
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d->animGroup->stop();
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}
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if (d->newPage) {
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d->newPage.data()->show();
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d->newPage.data()->setEnabled(true);
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}
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if (d->oldPage) {
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d->oldPage.data()->show();
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d->oldPage.data()->setEnabled(false);
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}
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if (d->newPage && d->oldPage) {
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//FIXME: it seems necessary to resiz the thing 2 times to have effect
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d->newPage.data()->resize(1,1);
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d->newPage.data()->resize(d->oldPage.data()->size());
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QRect beforeCurrentGeom(d->oldPage.data()->geometry().toRect());
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beforeCurrentGeom.moveTopRight(beforeCurrentGeom.topLeft());
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if (index > d->currentIndex) {
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d->newPage.data()->setPos(d->oldPage.data()->geometry().topRight());
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d->newPageAnim->setProperty("movementDirection", Animation::MoveLeft);
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d->newPageAnim->setProperty("distancePointF", QPointF(d->oldPage.data()->size().width(), 0));
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d->newPageAnim->setTargetWidget(d->newPage.data());
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d->oldPageAnim->setProperty("movementDirection", Animation::MoveLeft);
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d->oldPageAnim->setProperty("distancePointF", QPointF(beforeCurrentGeom.width(), 0));
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d->oldPageAnim->setTargetWidget(d->oldPage.data());
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d->animGroup->start();
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} else {
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d->newPage.data()->setPos(beforeCurrentGeom.topLeft());
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d->newPageAnim->setProperty("movementDirection", Animation::MoveRight);
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d->newPageAnim->setProperty("distancePointF", QPointF(d->oldPage.data()->size().width(), 0));
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d->newPageAnim->setTargetWidget(d->newPage.data());
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d->oldPageAnim->setProperty("movementDirection", Animation::MoveRight);
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d->oldPageAnim->setProperty("distancePointF",
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QPointF(d->oldPage.data()->size().width(), 0));
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d->oldPageAnim->setTargetWidget(d->oldPage.data());
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d->animGroup->start();
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}
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} else if (d->newPage) {
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d->tabWidgetLayout->addItem(d->newPage.data());
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}
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d->currentIndex = index;
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d->tabProxy->native->setCurrentIndex(index);
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}
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int TabBar::count() const
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{
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return d->pages.count();
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}
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void TabBar::removeTab(int index)
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{
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if (index >= d->pages.count() || index < 0) {
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return;
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}
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d->newPageAnim->stop();
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d->oldPageAnim->stop();
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int oldCurrentIndex = d->tabProxy->native->currentIndex();
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d->tabProxy->native->removeTab(index);
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d->currentIndex = oldCurrentIndex;
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int currentIndex = d->tabProxy->native->currentIndex();
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if (oldCurrentIndex == index) {
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d->tabWidgetLayout->removeAt(1);
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if (d->tabProxy->native->count() > 0) {
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setCurrentIndex(currentIndex >= oldCurrentIndex ? currentIndex + 1 : currentIndex);
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}
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}
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QGraphicsWidget *page = d->pages.takeAt(index);
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scene()->removeItem(page);
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page->deleteLater();
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if (d->pages.count() > 0) {
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d->updateTabWidgetMode();
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} else {
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d->tabWidgetLayout->addItem(d->emptyTabBarSpacer);
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}
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}
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QGraphicsLayoutItem *TabBar::takeTab(int index)
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{
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if (index >= d->pages.count()) {
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return 0;
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}
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int oldCurrentIndex = d->tabProxy->native->currentIndex();
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d->tabProxy->native->removeTab(index);
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int currentIndex = d->tabProxy->native->currentIndex();
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if (oldCurrentIndex == index) {
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d->tabWidgetLayout->removeAt(1);
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if (d->tabProxy->native->count() > 0) {
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setCurrentIndex(currentIndex >= oldCurrentIndex ? currentIndex + 1 : currentIndex);
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}
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}
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QGraphicsWidget *page = d->pages.takeAt(index);
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QGraphicsLayoutItem *returnItem = 0;
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QGraphicsLayout *lay = page->layout();
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if (lay && lay->count() == 1) {
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returnItem = lay->itemAt(0);
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lay->removeAt(0);
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} else {
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returnItem = lay;
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}
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if (returnItem) {
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returnItem->setParentLayoutItem(0);
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if (QGraphicsItem *item = returnItem->graphicsItem()) {
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item->setParentItem(0);
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}
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}
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page->setLayout(0);
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scene()->removeItem(page);
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page->deleteLater();
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if (oldCurrentIndex != currentIndex) {
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setCurrentIndex(currentIndex);
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}
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d->updateTabWidgetMode();
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d->tabProxy->setPreferredSize(d->tabProxy->native->sizeHint());
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return returnItem;
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}
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QGraphicsLayoutItem *TabBar::tabAt(int index)
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{
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if (index >= d->pages.count()) {
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return 0;
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}
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QGraphicsWidget *page = d->pages.value(index);
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QGraphicsLayoutItem *returnItem = 0;
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QGraphicsLayout *lay = page->layout();
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if (lay && lay->count() == 1) {
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returnItem = lay->itemAt(0);
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} else {
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returnItem = lay;
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}
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return returnItem;
|
|
}
|
|
|
|
void TabBar::setTabText(int index, const QString &label)
|
|
{
|
|
if (index >= d->pages.count()) {
|
|
return;
|
|
}
|
|
|
|
d->tabProxy->native->setTabText(index, label);
|
|
}
|
|
|
|
QString TabBar::tabText(int index) const
|
|
{
|
|
return d->tabProxy->native->tabText(index);
|
|
}
|
|
|
|
void TabBar::setTabIcon(int index, const QIcon &icon)
|
|
{
|
|
d->tabProxy->native->setTabIcon(index, icon);
|
|
}
|
|
|
|
QIcon TabBar::tabIcon(int index) const
|
|
{
|
|
return d->tabProxy->native->tabIcon(index);
|
|
}
|
|
|
|
void TabBar::setTabBarShown(bool show)
|
|
{
|
|
if (!show && !d->tabWidgetMode) {
|
|
return;
|
|
}
|
|
if (d->tabBarShown == show) {
|
|
return;
|
|
}
|
|
d->tabBarShown = show;
|
|
|
|
if (!show) {
|
|
d->tabProxy->hide();
|
|
d->tabWidgetLayout->removeItem(d->tabBarLayout);
|
|
} else {
|
|
d->tabProxy->show();
|
|
d->tabWidgetLayout->insertItem(0, d->tabBarLayout);
|
|
}
|
|
}
|
|
|
|
bool TabBar::isTabBarShown() const
|
|
{
|
|
return d->tabBarShown;
|
|
}
|
|
|
|
void TabBar::setStyleSheet(const QString &stylesheet)
|
|
{
|
|
d->tabProxy->native->setStyleSheet(stylesheet);
|
|
}
|
|
|
|
QString TabBar::styleSheet() const
|
|
{
|
|
return d->tabProxy->native->styleSheet();
|
|
}
|
|
|
|
void TabBar::setTabHighlighted(int index, bool highlight)
|
|
{
|
|
d->tabProxy->native->setTabHighlighted(index, highlight);
|
|
}
|
|
|
|
bool TabBar::isTabHighlighted(int index) const
|
|
{
|
|
return d->tabProxy->native->isTabHighlighted(index);
|
|
}
|
|
|
|
KTabBar *TabBar::nativeWidget() const
|
|
{
|
|
return d->tabProxy->native;
|
|
}
|
|
|
|
void TabBar::wheelEvent(QGraphicsSceneWheelEvent * event)
|
|
{
|
|
Q_UNUSED(event)
|
|
//Still here for binary compatibility
|
|
}
|
|
|
|
void TabBar::changeEvent(QEvent *event)
|
|
{
|
|
d->changeEvent(event);
|
|
QGraphicsWidget::changeEvent(event);
|
|
}
|
|
|
|
void TabBar::setFirstPositionWidget(QGraphicsWidget *widget)
|
|
{
|
|
if (d->lastPositionWidget.data() == widget) {
|
|
return;
|
|
}
|
|
|
|
if (d->firstPositionWidget) {
|
|
QGraphicsWidget *widget = d->firstPositionWidget.data();
|
|
d->tabBarLayout->removeItem(widget);
|
|
scene()->removeItem(widget);
|
|
widget->deleteLater();
|
|
}
|
|
|
|
d->firstPositionWidget = widget;
|
|
if (widget) {
|
|
widget->setParentItem(this);
|
|
if (layoutDirection() == Qt::LeftToRight) {
|
|
d->tabBarLayout->insertItem(0, widget);
|
|
} else {
|
|
d->tabBarLayout->addItem(widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
QGraphicsWidget *TabBar::firstPositionWidget() const
|
|
{
|
|
return d->firstPositionWidget.data();
|
|
}
|
|
|
|
void TabBar::setLastPositionWidget(QGraphicsWidget *widget)
|
|
{
|
|
if (d->lastPositionWidget.data() == widget) {
|
|
return;
|
|
}
|
|
|
|
if (d->lastPositionWidget) {
|
|
QGraphicsWidget *widget = d->lastPositionWidget.data();
|
|
d->tabBarLayout->removeItem(widget);
|
|
scene()->removeItem(widget);
|
|
widget->deleteLater();
|
|
}
|
|
|
|
d->lastPositionWidget = widget;
|
|
if (widget) {
|
|
widget->setParentItem(this);
|
|
if (layoutDirection() == Qt::LeftToRight) {
|
|
d->tabBarLayout->addItem(widget);
|
|
} else {
|
|
d->tabBarLayout->insertItem(0, widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
QGraphicsWidget *TabBar::lastPositionWidget() const
|
|
{
|
|
return d->lastPositionWidget.data();
|
|
}
|
|
|
|
} // namespace Plasma
|
|
|
|
|
|
|
|
|
|
#include "moc_tabbar.cpp"
|