q3toolbar.cpp

奇趣公司比较新的qt/emd版本

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#include "q3toolbar.h"
#ifndef QT_NO_TOOLBAR

#include "q3mainwindow.h"
#include "qapplication.h"
#include "qcombobox.h"
#include "qcursor.h"
#include "qdesktopwidget.h"
#include "qdrawutil.h"
#include "qevent.h"
#include "qframe.h"
#include "qlayout.h"
#include "qmap.h"
#include "qpainter.h"
#include "q3popupmenu.h"
#include "qstyle.h"
#include "qstyleoption.h"
#include "qtimer.h"
#include "qtoolbutton.h"
#include "qtooltip.h"

static const char * const arrow_v_xpm[] = {
    "7 9 3 1",
    "            c None",
    ".            c #000000",
    "+            c none",
    ".+++++.",
    "..+++..",
    "+..+..+",
    "++...++",
    ".++.++.",
    "..+++..",
    "+..+..+",
    "++...++",
    "+++.+++"};

static const char * const arrow_h_xpm[] = {
    "9 7 3 1",
    "            c None",
    ".            c #000000",
    "+            c none",
    "..++..+++",
    "+..++..++",
    "++..++..+",
    "+++..++..",
    "++..++..+",
    "+..++..++",
    "..++..+++"};

class Q3ToolBarExtensionWidget;

class Q3ToolBarPrivate
{
public:
    Q3ToolBarPrivate() : moving(false), checkingExtension(false) {
    }

    bool moving;
    bool checkingExtension;
    Q3ToolBarExtensionWidget *extension;
    Q3PopupMenu *extensionPopup;

    QMap<QAction *, QWidget *> actions;
};


class Q3ToolBarSeparator : public QWidget
{
    Q_OBJECT
public:
    Q3ToolBarSeparator(Qt::Orientation, Q3ToolBar *parent, const char* name=0);

    QSize sizeHint() const;
    Qt::Orientation orientation() const { return orient; }
public slots:
    void setOrientation(Qt::Orientation);
protected:
    void changeEvent(QEvent *);
    void paintEvent(QPaintEvent *);

private:
    Qt::Orientation orient;
};

class Q3ToolBarExtensionWidget : public QWidget
{
    Q_OBJECT

public:
    Q3ToolBarExtensionWidget(QWidget *w);
    void setOrientation(Qt::Orientation o);
    QToolButton *button() const { return tb; }

protected:
    void resizeEvent(QResizeEvent *e) {
        QWidget::resizeEvent(e);
        layOut();
    }

private:
    void layOut();
    QToolButton *tb;
    Qt::Orientation orient;

};

Q3ToolBarExtensionWidget::Q3ToolBarExtensionWidget(QWidget *w)
    : QWidget(w, "qt_dockwidget_internal")
{
    tb = new QToolButton(this, "qt_toolbar_ext_button");
    tb->setAutoRaise(true);
    setOrientation(Qt::Horizontal);
    setAutoFillBackground(true);
}

void Q3ToolBarExtensionWidget::setOrientation(Qt::Orientation o)
{
    orient = o;
    if (orient == Qt::Horizontal)
        tb->setIcon(QPixmap((const char **)arrow_h_xpm));
    else
        tb->setIcon(QPixmap((const char **)arrow_v_xpm));
    layOut();
}

void Q3ToolBarExtensionWidget::layOut()
{
    tb->setGeometry(2, 2, width() - 4, height() - 4);
}

Q3ToolBarSeparator::Q3ToolBarSeparator(Qt::Orientation o , Q3ToolBar *parent,
                                     const char* name)
    : QWidget(parent, name)
{
    connect(parent, SIGNAL(orientationChanged(Qt::Orientation)),
             this, SLOT(setOrientation(Qt::Orientation)));
    setOrientation(o);
    setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum));
}



void Q3ToolBarSeparator::setOrientation(Qt::Orientation o)
{
    orient = o;
}

void Q3ToolBarSeparator::changeEvent(QEvent *ev)
{
    if(ev->type() == QEvent::StyleChange)
        setOrientation(orient);
    QWidget::changeEvent(ev);
}

static QStyleOption getStyleOption(const Q3ToolBarSeparator *tbs)
{
    QStyleOption opt(0);
    opt.rect = tbs->rect();
    opt.palette = tbs->palette();
    if (tbs->orientation() == Qt::Horizontal)
        opt.state = QStyle::State_Horizontal;
    else
        opt.state = QStyle::State_None;
    return opt;
}

QSize Q3ToolBarSeparator::sizeHint() const
{
    QStyleOption opt = getStyleOption(this);
    int extent = style()->pixelMetric(QStyle::PM_ToolBarSeparatorExtent, &opt, this);
    if (orient == Qt::Horizontal)
        return QSize(extent, 0);
    else
        return QSize(0, extent);
}

void Q3ToolBarSeparator::paintEvent(QPaintEvent *)
{
    QPainter p(this);
    QStyleOption opt = getStyleOption(this);
    style()->drawPrimitive(QStyle::PE_Q3DockWindowSeparator, &opt, &p, this);
}

#include "q3toolbar.moc"


/*!
    \class Q3ToolBar
    \brief The Q3ToolBar class provides a movable panel containing
    widgets such as tool buttons.

    \compat

    A toolbar is a panel that contains a set of controls, usually
    represented by small icons. It's purpose is to provide quick
    access to frequently used commands or options. Within a
    Q3MainWindow the user can drag toolbars within and between the
    \link Q3DockArea dock areas\endlink. Toolbars can also be dragged
    out of any dock area to float freely as top-level windows.

    Q3ToolBar is a specialization of QDockWindow, and so provides all
    the functionality of a QDockWindow.

    To use Q3ToolBar you simply create a Q3ToolBar as a child of a
    Q3MainWindow, create a number of QToolButton widgets (or other
    widgets) in left to right (or top to bottom) order and call
    addSeparator() when you want a separator. When a toolbar is
    floated the caption used is the label given in the constructor
    call. This can be changed with setLabel().

    You may use most widgets within a toolbar, with QToolButton and
    QComboBox being the most common. But note that the toolbar's
    actions must be \l {Q3Action}s.

    If you create a new widget on an already visible Q3ToolBar, this
    widget will automatically become visible without needing a show()
    call. (This differs from every other Qt widget container. We
    recommend calling show() anyway since we hope to fix this anomaly
    in a future release.)

    Q3ToolBars, like QDockWindows, are located in \l{Q3DockArea}s or
    float as top-level windows. Q3MainWindow provides four Q3DockAreas
    (top, left, right and bottom). When you create a new toolbar (as
    in the example above) as a child of a Q3MainWindow the toolbar will
    be added to the top dock area. You can move it to another dock
    area (or float it) by calling Q3MainWindow::moveDockWindow(). Dock
    areas lay out their windows in lines.

    If the main window is resized so that the area occupied by the
    toolbar is too small to show all its widgets a little arrow button
    (which looks like a right-pointing chevron, '&#187;') will appear
    at the right or bottom of the toolbar depending on its
    orientation. Clicking this button pops up a menu that shows the
    'overflowing' items. QToolButtons are represented in the menu using
    their textLabel property, other QAbstractButton subclasses are represented
    using their text property, and QComboBoxes are represented as submenus,
    with the caption text being used in the submenu item.

    Usually a toolbar will get precisely the space it needs. However,
    with setHorizontalStretchable(), setVerticalStretchable() or
    setStretchableWidget() you can tell the main window to expand the
    toolbar to fill all available space in the specified orientation.

    The toolbar arranges its buttons either horizontally or vertically
    (see orientation() for details). Generally, Q3DockArea will set the
    orientation correctly for you, but you can set it yourself with
    setOrientation() and track any changes by connecting to the
    orientationChanged() signal.

    You can use the clear() method to remove all items from a toolbar.

    \img qdockwindow.png Toolbar (dock window)
    \caption A floating QToolbar (dock window)

    \sa QToolButton Q3MainWindow
*/

/*!
    Constructs an empty toolbar.

    The toolbar is called \a name and is a child of \a parent and is
    managed by \a parent. It is initially located in dock area \a dock
    and is labeled \a label. If \a newLine is true the toolbar will be
    placed on a new line in the dock area.
*/

Q3ToolBar::Q3ToolBar(const QString &label,
                    Q3MainWindow * parent, Qt::ToolBarDock dock,
                    bool newLine, const char * name)
    : Q3DockWindow(InDock, parent, name, 0, true)
{
    mw = parent;
    init();

    if (parent)
        parent->addToolBar(this, label, dock, newLine);
}


/*!
    Constructs an empty horizontal toolbar.

    The toolbar is called \a name and is a child of \a parent and is
    managed by \a mainWindow. The \a label and \a newLine parameters
    are passed straight to Q3MainWindow::addDockWindow(). \a name and
    the widget flags \a f are passed on to the Q3DockWindow constructor.

    Use this constructor if you want to create torn-off (undocked,
    floating) toolbars or toolbars in the \link QStatusBar status
    bar\endlink.
*/

Q3ToolBar::Q3ToolBar(const QString &label, Q3MainWindow * mainWindow,
                    QWidget * parent, bool newLine, const char * name,
                    Qt::WindowFlags f)
    : Q3DockWindow(InDock, parent, name, f, true)
{
    mw = mainWindow;
    init();

    setParent(parent);

    if (mainWindow)
        mainWindow->addToolBar(this, label, Qt::DockUnmanaged, newLine);
}


/*!
    \overload

    Constructs an empty toolbar called \a name, with parent \a parent,
    in its \a parent's top dock area, without any label and without
    requiring a newline.
*/

Q3ToolBar::Q3ToolBar(Q3MainWindow * parent, const char * name)
    : Q3DockWindow(InDock, parent, name, 0, true)
{
    mw = parent;
    init();

    if (parent)
        parent->addToolBar(this, QString(), Qt::DockTop);
}

/*!
    \internal

  Common initialization code. Requires that \c mw and \c o are set.
  Does not call Q3MainWindow::addDockWindow().
*/
void Q3ToolBar::init()
{
    d = new Q3ToolBarPrivate;
    d->extension = 0;
    d->extensionPopup = 0;
    sw = 0;

    setBackgroundRole(QPalette::Button);
    setFocusPolicy(Qt::NoFocus);
    setFrameStyle(QFrame::ToolBarPanel | QFrame::Raised);
}

/*!
    Destructor.
*/

Q3ToolBar::~Q3ToolBar()
{
    delete d;
}

/*!
    \reimp
*/

void Q3ToolBar::setOrientation(Qt::Orientation o)
{
    Q3DockWindow::setOrientation(o);
    if (d->extension)
        d->extension->setOrientation(o);
    QObjectList childList = children();
    for (int i = 0; i < childList.size(); ++i) {
        Q3ToolBarSeparator* w = qobject_cast<Q3ToolBarSeparator*>(childList.at(i));
        if (w)
            w->setOrientation(o);
    }
}

/*!
    Adds a separator to the right/bottom of the toolbar.
*/

void Q3ToolBar::addSeparator()
{
    (void) new Q3ToolBarSeparator(orientation(), this, "toolbar separator");
}

/*!