qmainwindowlayout.cpp

奇趣公司比较新的qt/emd版本

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**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
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#include "qmainwindowlayout_p.h"
#include "qdockarealayout_p.h"

#ifndef QT_NO_MAINWINDOW
#include "qdockwidget.h"
#include "qdockwidget_p.h"
#include "qtoolbar_p.h"
#include "qmainwindow.h"
#include "qmainwindowlayout_p.h"
#include "qtoolbar.h"
#include "qtoolbarlayout_p.h"
#include "qwidgetanimator_p.h"
#include "qrubberband.h"
#include "qdockwidget_p.h"
#include "qtabbar_p.h"

#include <qapplication.h>
#include <qstatusbar.h>
#include <qstring.h>
#include <qstyle.h>
#include <qvarlengtharray.h>
#include <qstack.h>
#include <qmap.h>
#include <qtimer.h>

#include <qdebug.h>

#include <private/qlayoutengine_p.h>
#ifdef Q_WS_MAC
#include <private/qcore_mac_p.h>
#endif

#if 0

/******************************************************************************
** debug
*/

#include <stdio.h>
#include <QTextStream>
static QTextStream qout(stderr, QIODevice::WriteOnly);

#ifndef QT_NO_DOCKWIDGET
void dumpLayout(const QDockAreaLayoutInfo &layout, QString indent);

void dumpLayout(const QDockAreaLayoutItem &item, QString indent)
{
    qout << indent << "QDockAreaLayoutItem: "
            << "pos: " << item.pos << " size:" << item.size
            << " gap:" << item.gap << '\n';
    if (item.widgetItem != 0) {
        qout << indent << "widget: "
            << item.widgetItem->widget()->metaObject()->className()
            << ' ' << item.widgetItem->widget()->windowTitle() << '\n';
    } else if (item.subinfo != 0) {
        qout << indent << "subinfo:\n";
        dumpLayout(*item.subinfo, indent + QLatin1String("  "));
    }
    qout.flush();
}

void dumpLayout(const QDockAreaLayoutInfo &layout, QString indent)
{
    qout << indent << "QDockAreaLayoutInfo: "
            << layout.rect.left() << ','
            << layout.rect.top() << ' '
            << layout.rect.width() << 'x'
            << layout.rect.height()
            << " orient:" << layout.o
            << " tabbed:" << layout.tabbed
            << " tbshape:" << layout.tabBarShape << '\n';

    for (int i = 0; i < layout.item_list.count(); ++i) {
        qout << indent << "Item: " << i << '\n';
        dumpLayout(layout.item_list.at(i), indent + QLatin1String("  "));
    }
    qout.flush();
};

void dumpLayout(const QDockAreaLayout &layout, QString indent)
{
    qout << indent << "QDockAreaLayout: "
            << layout.rect.left() << ','
            << layout.rect.top() << ' '
            << layout.rect.width() << 'x'
            << layout.rect.height() << '\n';

    for (int i = 0; i < QInternal::DockCount; ++i) {
        qout << indent << "Dock area: " << i << '\n';
        dumpLayout(layout.docks[i], indent + QLatin1String("  "));
    }
    qout.flush();
};
#endif // QT_NO_DOCKWIDGET

#endif // 0


/******************************************************************************
** QMainWindowLayoutState
*/

// we deal with all the #ifndefferry here so QMainWindowLayout code is clean

QMainWindowLayoutState::QMainWindowLayoutState(QMainWindow *win)
    :
#ifndef QT_NO_TOOLBAR
    toolBarAreaLayout(win),
#endif
#ifndef QT_NO_DOCKWIDGET
    dockAreaLayout(win)
#else
    centralWidgetItem(0)
#endif

{
    mainWindow = win;
}

QSize QMainWindowLayoutState::sizeHint() const
{

    QSize result(0, 0);

#ifndef QT_NO_DOCKWIDGET
    result = dockAreaLayout.sizeHint();
#else
    if (centralWidgetItem != 0)
        result = centralWidgetItem->sizeHint();
#endif

#ifndef QT_NO_TOOLBAR
    result = toolBarAreaLayout.sizeHint(result);
#endif // QT_NO_TOOLBAR

    return result;
}

QSize QMainWindowLayoutState::minimumSize() const
{
    QSize result(0, 0);

#ifndef QT_NO_DOCKWIDGET
    result = dockAreaLayout.minimumSize();
#else
    if (centralWidgetItem != 0)
        result = centralWidgetItem->minimumSize();
#endif

#ifndef QT_NO_TOOLBAR
    result = toolBarAreaLayout.minimumSize(result);
#endif // QT_NO_TOOLBAR

    return result;
}

void QMainWindowLayoutState::apply(bool animated)
{
#ifndef QT_NO_TOOLBAR
    toolBarAreaLayout.apply(animated);
#endif

#ifndef QT_NO_DOCKWIDGET
//    dumpLayout(dockAreaLayout, QString());
    dockAreaLayout.apply(animated);
#else
    if (centralWidgetItem != 0) {
        QMainWindowLayout *layout = qobject_cast<QMainWindowLayout*>(mainWindow->layout());
        Q_ASSERT(layout != 0);
        layout->widgetAnimator->animate(centralWidgetItem->widget(), centralWidgetRect, animated);
    }
#endif
}

void QMainWindowLayoutState::fitLayout()
{
    QRect r;
#ifdef QT_NO_TOOLBAR
    r = rect;
#else
    toolBarAreaLayout.rect = rect;
    r = toolBarAreaLayout.fitLayout();
#endif // QT_NO_TOOLBAR

#ifndef QT_NO_DOCKWIDGET
    dockAreaLayout.rect = r;
    dockAreaLayout.fitLayout();
#else
    centralWidgetRect = r;
#endif
}

void QMainWindowLayoutState::deleteAllLayoutItems()
{
#ifndef QT_NO_TOOLBAR
    toolBarAreaLayout.deleteAllLayoutItems();
#endif

#ifndef QT_NO_DOCKWIDGET
    dockAreaLayout.deleteAllLayoutItems();
#endif
}

void QMainWindowLayoutState::deleteCentralWidgetItem()
{
#ifndef QT_NO_DOCKWIDGET
    delete dockAreaLayout.centralWidgetItem;
    dockAreaLayout.centralWidgetItem = 0;
#else
    delete centralWidgetItem;
    centralWidgetItem = 0;
#endif
}

QLayoutItem *QMainWindowLayoutState::itemAt(int index, int *x) const
{
#ifndef QT_NO_TOOLBAR
    if (QLayoutItem *ret = toolBarAreaLayout.itemAt(x, index))
        return ret;
#endif

#ifndef QT_NO_DOCKWIDGET
    if (QLayoutItem *ret = dockAreaLayout.itemAt(x, index))
        return ret;
#else
    if (centralWidgetItem != 0 && (*x)++ == index)
        return centralWidgetItem;
#endif

    return 0;
}

QLayoutItem *QMainWindowLayoutState::takeAt(int index, int *x)
{
#ifndef QT_NO_TOOLBAR
    if (QLayoutItem *ret = toolBarAreaLayout.takeAt(x, index))
        return ret;
#endif

#ifndef QT_NO_DOCKWIDGET
    if (QLayoutItem *ret = dockAreaLayout.takeAt(x, index))
        return ret;
#else
    if (centralWidgetItem != 0 && (*x)++ == index) {
        QLayoutItem *ret = centralWidgetItem;
        centralWidgetItem = 0;
        return ret;
    }
#endif

    return 0;
}

QList<int> QMainWindowLayoutState::indexOf(QWidget *widget) const
{
    QList<int> result;

#ifndef QT_NO_TOOLBAR
    // is it a toolbar?
    if (QToolBar *toolBar = qobject_cast<QToolBar*>(widget)) {
        result = toolBarAreaLayout.indexOf(toolBar);
        if (!result.isEmpty())
            result.prepend(0);
        return result;
    }
#endif

#ifndef QT_NO_DOCKWIDGET
    // is it a dock widget?
    if (QDockWidget *dockWidget = qobject_cast<QDockWidget *>(widget)) {
        result = dockAreaLayout.indexOf(dockWidget);
        if (!result.isEmpty())
            result.prepend(1);
        return result;
    }
#endif //QT_NO_DOCKWIDGET

    return result;
}

bool QMainWindowLayoutState::contains(QWidget *widget) const
{
#ifndef QT_NO_DOCKWIDGET
    if (dockAreaLayout.centralWidgetItem != 0 && dockAreaLayout.centralWidgetItem->widget() == widget)
        return true;
    if (!dockAreaLayout.indexOf(widget).isEmpty())
        return true;
#else
    if (centralWidgetItem != 0 && centralWidgetItem->widget() == widget)
        return true;
#endif

#ifndef QT_NO_TOOLBAR
    if (!toolBarAreaLayout.indexOf(widget).isEmpty())
        return true;
#endif
    return false;
}

void QMainWindowLayoutState::setCentralWidget(QWidget *widget)
{
    QLayoutItem *item = 0;
    if (widget != 0)
        item = new QWidgetItem(widget);

#ifndef QT_NO_DOCKWIDGET
    dockAreaLayout.centralWidgetItem = item;
#else
    centralWidgetItem = item;
#endif
}

QWidget *QMainWindowLayoutState::centralWidget() const
{
    QLayoutItem *item = 0;

#ifndef QT_NO_DOCKWIDGET
    item = dockAreaLayout.centralWidgetItem;
#else
    item = centralWidgetItem;
#endif

    if (item != 0)
        return item->widget();
    return 0;
}

QList<int> QMainWindowLayoutState::gapIndex(QWidget *widget,
                                            const QPoint &pos) const
{
    QList<int> result;

#ifndef QT_NO_TOOLBAR
    // is it a toolbar?
    if (qobject_cast<QToolBar*>(widget) != 0) {
        result = toolBarAreaLayout.gapIndex(pos);
        if (!result.isEmpty())
            result.prepend(0);
        return result;
    }
#endif

#ifndef QT_NO_DOCKWIDGET
    // is it a dock widget?
    if (qobject_cast<QDockWidget *>(widget) != 0) {
        result = dockAreaLayout.gapIndex(pos);
        if (!result.isEmpty())
            result.prepend(1);
        return result;
    }
#endif //QT_NO_DOCKWIDGET

    return result;
}

bool QMainWindowLayoutState::insertGap(QList<int> path, QLayoutItem *item)
{
    if (path.isEmpty())
        return false;

    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0) {
        Q_ASSERT(qobject_cast<QToolBar*>(item->widget()) != 0);
        return toolBarAreaLayout.insertGap(path, item);
    }
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1) {
        Q_ASSERT(qobject_cast<QDockWidget*>(item->widget()) != 0);
        return dockAreaLayout.insertGap(path, item);
    }
#endif //QT_NO_DOCKWIDGET

    return false;
}

void QMainWindowLayoutState::remove(QList<int> path)
{
    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0)
        toolBarAreaLayout.remove(path);
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1)
        dockAreaLayout.remove(path);
#endif //QT_NO_DOCKWIDGET
}

void QMainWindowLayoutState::clear()
{
#ifndef QT_NO_TOOLBAR
    toolBarAreaLayout.clear();
#endif

#ifndef QT_NO_DOCKWIDGET
    dockAreaLayout.clear();
#else
    centralWidgetRect = QRect(0, 0, -1, -1);
#endif

    rect = QRect(0, 0, -1, -1);
}

bool QMainWindowLayoutState::isValid() const
{
    return rect.isValid();
}

QLayoutItem *QMainWindowLayoutState::item(QList<int> path)
{
    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0)
        return toolBarAreaLayout.item(path).widgetItem;
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1)
        return dockAreaLayout.item(path).widgetItem;
#endif //QT_NO_DOCKWIDGET

    return 0;
}

QRect QMainWindowLayoutState::itemRect(QList<int> path) const
{
    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0)
        return toolBarAreaLayout.itemRect(path);
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1)
        return dockAreaLayout.itemRect(path);
#endif //QT_NO_DOCKWIDGET

    return QRect();
}

QRect QMainWindowLayoutState::gapRect(QList<int> path) const
{
    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0)
        return toolBarAreaLayout.itemRect(path);
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1)
        return dockAreaLayout.gapRect(path);