q3datetimeedit.cpp

奇趣公司比较新的qt/emd版本

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#include "q3datetimeedit.h"

#ifndef QT_NO_DATETIMEEDIT

#include <private/q3richtext_p.h>
#include "qevent.h"
#include "q3rangecontrol.h"
#include "qapplication.h"
#include "qpixmap.h"
#include "qlist.h"
#include "qstring.h"
#include "qstyle.h"

#if defined(Q_WS_WIN)
#include "qt_windows.h"
#endif

#define QDATETIMEEDIT_HIDDEN_CHAR QLatin1Char('0')

class Q_COMPAT_EXPORT QNumberSection
{
public:
    QNumberSection(int selStart = 0, int selEnd = 0, bool separat = true, int actual = -1)
        : selstart(selStart), selend(selEnd), act(actual), sep(separat)
    {}
    int selectionStart() const { return selstart; }
    void setSelectionStart(int s) { selstart = s; }
    int selectionEnd() const { return selend; }
    void setSelectionEnd(int s) { selend = s; }
    int width() const { return selend - selstart; }
    int index() const { return act; }
    bool separator() const { return sep; }
    Q_DUMMY_COMPARISON_OPERATOR(QNumberSection)
private:
    signed int selstart :12;
    signed int selend         :12;
    signed int act         :7;
    bool sep         :1;
};

static QString        *lDateSep = 0;
static QString        *lTimeSep = 0;
static bool        lAMPM          = false;
static QString        *lAM          = 0;
static QString        *lPM          = 0;
static Q3DateEdit::Order        lOrder = Q3DateEdit::YMD;
static int refcount = 0;

static void cleanup()
{
    delete lDateSep;
    lDateSep = 0;
    delete lTimeSep;
    lTimeSep = 0;
    delete lAM;
    lAM = 0;
    delete lPM;
    lPM = 0;
}

/*!
\internal
try to get the order of DMY and the date/time separator from the locale settings
*/
static void readLocaleSettings()
{
    int dpos, mpos, ypos;
    cleanup();

    lDateSep = new QString();
    lTimeSep = new QString();

#if defined(Q_WS_WIN)
    QT_WA({
        TCHAR data[10];
        GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SDATE, data, 10);
        *lDateSep = QString::fromUtf16((ushort*)data);
        GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_STIME, data, 10);
        *lTimeSep = QString::fromUtf16((ushort*)data);
        GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_ITIME, data, 10);
        lAMPM = QString::fromUtf16((ushort*)data).toInt()==0;
        GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_S1159, data, 10);
        QString am = QString::fromUtf16((ushort*)data);
        if (!am.isEmpty())
            lAM = new QString(am);
        GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_S2359, data, 10);
        QString pm = QString::fromUtf16((ushort*)data);
        if (!pm.isEmpty() )
            lPM = new QString(pm);
    } , {
        char data[10];
        GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SDATE, (char*)&data, 10);
        *lDateSep = QString::fromLocal8Bit(data);
        GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_STIME, (char*)&data, 10);
        *lTimeSep = QString::fromLocal8Bit(data);
        GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_ITIME, (char*)&data, 10);
        lAMPM = QString::fromLocal8Bit(data).toInt()==0;
        GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_S1159, (char*)&data, 10);
        QString am = QString::fromLocal8Bit(data);
        if (!am.isEmpty())
            lAM = new QString(am);
        GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_S2359, (char*)&data, 10);
        QString pm = QString::fromLocal8Bit(data);
        if (!pm.isEmpty())
            lPM = new QString(pm);
    });
#else
    *lDateSep = QLatin1Char('-');
    *lTimeSep = QLatin1Char(':');
#endif
    QString d = QDate(1999, 11, 22).toString(Qt::LocalDate);
    dpos = d.indexOf(QLatin1String("22"));
    mpos = d.indexOf(QLatin1String("11"));
    ypos = d.indexOf(QLatin1String("99"));
    if (dpos > -1 && mpos > -1 && ypos > -1) {
        // test for DMY, MDY, YMD, YDM
        if (dpos < mpos && mpos < ypos) {
            lOrder = Q3DateEdit::DMY;
        } else if (mpos < dpos && dpos < ypos) {
            lOrder = Q3DateEdit::MDY;
        } else if (ypos < mpos && mpos < dpos) {
            lOrder = Q3DateEdit::YMD;
        } else if (ypos < dpos && dpos < mpos) {
            lOrder = Q3DateEdit::YDM;
        } else {
            // cannot determine the dateformat - use the default
            return;
        }

        // this code needs to change if new formats are added

#ifndef Q_WS_WIN
        QString sep = d.mid(qMin(dpos, mpos) + 2, QABS(dpos - mpos) - 2);
        if (d.count(sep) == 2) {
            *lDateSep = sep;
        }
#endif
    }

#ifndef Q_WS_WIN
    QString t = QTime(11, 22, 33).toString(Qt::LocalDate);
    dpos = t.indexOf(QLatin1String("11"));
    mpos = t.indexOf(QLatin1String("22"));
    ypos = t.indexOf(QLatin1String("33"));
    // We only allow hhmmss
    if (dpos > -1 && dpos < mpos && mpos < ypos) {
        QString sep = t.mid(dpos + 2, mpos - dpos - 2);
        if (sep == t.mid(mpos + 2, ypos - mpos - 2)) {
            *lTimeSep = sep;
        }
    }
#endif
}

static Q3DateEdit::Order localOrder() {
    if (!lDateSep) {
        readLocaleSettings();
    }
    return lOrder;
}

static QString localDateSep() {
    if (!lDateSep) {
        readLocaleSettings();
    }
    return *lDateSep;
}

static QString localTimeSep() {
    if (!lTimeSep) {
        readLocaleSettings();
    }
    return *lTimeSep;
}

class Q3DateTimeEditorPrivate
{
public:
    Q3DateTimeEditorPrivate()
        : frm(true),
          parag(new Q3TextParagraph(0, 0, 0, false)),
          focusSec(0)
    {
        parag->formatter()->setWrapEnabled(false);
        cursor = new Q3TextCursor(0);
        cursor->setParagraph(parag);
        offset = 0;
        sep = localDateSep();
        refcount++;
    }
    ~Q3DateTimeEditorPrivate()
    {
        delete parag;
        delete cursor;
        if (!--refcount)
            cleanup();
    }

    void appendSection(const QNumberSection& sec)
    {
        sections.append(sec);

    }
    void clearSections()
    {
        sections.clear();
    }
    void setSectionSelection(int sec, int selstart, int selend)
    {
        if (sec < 0 || sec > (int)sections.count())
            return;
        sections[sec].setSelectionStart(selstart);
        sections[sec].setSelectionEnd(selend);
    }
    uint sectionCount() const { return (uint)sections.count(); }
    void setSeparator(const QString& s) { sep = s; }
    QString separator() const { return sep; }

    void setFrame(bool f) { frm = f; }
    bool frame() const { return frm; }

    int focusSection() const { return focusSec; }
    int section(const QPoint& p)
    {
        cursor->place(p + QPoint(offset, 0), parag);
        int idx = cursor->index();
        for (int i = 0; i < sections.count(); ++i) {
            if (idx >= sections[i].selectionStart() &&
                 idx <= sections[i].selectionEnd())
                return i;
        }
        return -1;
    }
    QNumberSection section(int idx) const
    {
        return sections[idx];
    }
    bool setFocusSection(int idx)
    {
        if (idx > (int)sections.count()-1 || idx < 0)
            return false;
        if (idx != focusSec) {
            focusSec = idx;
            applyFocusSelection();
            return true;
        }
        return false;
    }

    bool inSectionSelection(int idx)
    {
        for (int i = 0; i < sections.count(); ++i) {
            if (idx >= sections[i].selectionStart() &&
                 idx <= sections[i].selectionEnd())
                return true;
        }
        return false;
    }

    void paint(const QString& txt, bool focus, QPainter& p,
                const QPalette&pal, const QRect& rect, QStyle *style)
    {
        int fw = 0;
        if (frm)
            fw = style->pixelMetric(QStyle::PM_DefaultFrameWidth);

        parag->truncate(0);
        parag->append(txt);
        if (!focus)
            parag->removeSelection(Q3TextDocument::Standard);
        else {
            applyFocusSelection();
        }

        /* color all QDATETIMEEDIT_HIDDEN_CHAR chars to background color */
        Q3TextFormat *fb = parag->formatCollection()->format(p.font(),
                                                             pal.base().color());
        Q3TextFormat *nf = parag->formatCollection()->format(p.font(),
                                                             pal.text().color());
        for (int i = 0; i < txt.length(); ++i) {
            parag->setFormat(i, 1, nf);
            if (inSectionSelection(i))
                continue;
            if (txt.at(i) == QDATETIMEEDIT_HIDDEN_CHAR)
                parag->setFormat(i, 1, fb);
            else
                parag->setFormat(i, 1, nf);
        }
        fb->removeRef();
        nf->removeRef();

        QRect r(rect.x(), rect.y(), rect.width() - 2 * (2 + fw), rect.height());
        parag->pseudoDocument()->docRect = r;
        parag->invalidate(0);
        parag->format();

        int xoff = 2 + fw - offset;
        int yoff = (rect.height() - parag->rect().height() + 1) / 2;
        if (yoff < 0)
            yoff = 0;

        p.translate(xoff, yoff);
        parag->paint(p, pal, 0, true);
        if (frm)
            p.translate(-xoff, -yoff);
    }

    void resize(const QSize& size) { sz = size; }

    int mapSection(int sec)
    {
        return sections[sec].index();
    }

protected:
    void applyFocusSelection()
    {
        if (focusSec > -1) {
            int selstart = sections[focusSec].selectionStart();
            int selend = sections[focusSec].selectionEnd();
            parag->setSelection(Q3TextDocument::Standard, selstart, selend);
            parag->format();
            if (parag->at(selstart)->x < offset ||
                 parag->at(selend)->x + parag->string()->width(selend) > offset + sz.width()) {
                offset = parag->at(selstart)->x;
            }
        }
    }
private:
    bool frm;
    Q3TextParagraph *parag;
    Q3TextCursor *cursor;
    QSize sz;
    int focusSec;
    QList< QNumberSection > sections;
    QString sep;
    int offset;
};

class Q3DateTimeEditor : public QWidget
{
    Q_OBJECT
public:
    Q3DateTimeEditor(Q3DateTimeEditBase *widget, QWidget *parent, const char* name=0);
    ~Q3DateTimeEditor();

    void setControlWidget(Q3DateTimeEditBase * widget);
    Q3DateTimeEditBase * controlWidget() const;

    void setSeparator(const QString& s);
    QString separator() const;

    int  focusSection() const;
    bool setFocusSection(int s);
    void appendSection(const QNumberSection& sec);
    void clearSections();
    void setSectionSelection(int sec, int selstart, int selend);
    bool eventFilter(QObject *o, QEvent *e);
    int  sectionAt(const QPoint &p);
    int mapSection(int sec);

protected:
    void init();
    bool event(QEvent *e);
    void resizeEvent(QResizeEvent *);
    void paintEvent(QPaintEvent *);
    void mousePressEvent(QMouseEvent *e);

private:
    Q3DateTimeEditBase* cw;
    Q3DateTimeEditorPrivate* d;
};

class QDateTimeSpinWidget : public Q3SpinWidget
{
    Q_OBJECT
public:
    QDateTimeSpinWidget(QWidget *parent, const char *name)
        : Q3SpinWidget(parent, name)
    {
    }

    void changeEvent(QEvent *e)
    {
	if (e->type() == QEvent::EnabledChange && isEnabled()) {
	    Q3DateEdit *de = ::qobject_cast<Q3DateEdit*>(parentWidget());
	    if (de) {
		setUpEnabled(de->date() < de->maxValue());
		setDownEnabled(de->date() > de->minValue());
	    } else {
		setUpEnabled(true);
		setDownEnabled(true);
	    }
	}
    }
    void enabledChange(bool notenabled)
    {
	Q3DateEdit *de = qobject_cast<Q3DateEdit*>(parentWidget());
	if (de && !notenabled) {
	    setUpEnabled(de->date() < de->maxValue());
	    setDownEnabled(de->date() > de->minValue());
	} else {
	    setUpEnabled(!notenabled);
	    setDownEnabled(!notenabled);
	}
    }


protected:
#ifndef QT_NO_WHEELEVENT
    void wheelEvent(QWheelEvent *e)
    {
        Q3DateTimeEditor *editor = qobject_cast<Q3DateTimeEditor*>(editWidget());
        Q_ASSERT(editor);
        if (!editor)
            return;

        int section = editor->sectionAt(e->pos());
        editor->setFocusSection(section);

        if (section == -1)
            return;
        Q3SpinWidget::wheelEvent(e);
    }
#endif
};

/*!
    Constructs an empty datetime editor with parent \a parent and
    called \a name.
*/
Q3DateTimeEditor::Q3DateTimeEditor(Q3DateTimeEditBase *widget, QWidget *parent, const char * name)
    : QWidget(parent, name)
{
    d = new Q3DateTimeEditorPrivate();
    cw = widget;
    init();
}

/*!
    Destroys the object and frees any allocated resources.
*/

Q3DateTimeEditor::~Q3DateTimeEditor()
{
    delete d;
}

/*! \internal

*/

void Q3DateTimeEditor::init()
{
    setBackgroundRole(QPalette::Base);
    setFocusSection(-1);
    installEventFilter(this);
    setFocusPolicy(Qt::WheelFocus);
}


/*! \reimp

*/

bool Q3DateTimeEditor::event(QEvent *e)
{
    if (e->type() == QEvent::FocusIn || e->type() == QEvent::FocusOut) {
        if (e->type() == QEvent::FocusOut)
            qApp->sendEvent(cw, e);
        update(rect());
    } else if (e->type() == QEvent::ShortcutOverride) {
        QKeyEvent* ke = (QKeyEvent*) e;
        switch (ke->key()) {
        case Qt::Key_Delete:
        case Qt::Key_Backspace:
        case Qt::Key_Up:
        case Qt::Key_Down:
        case Qt::Key_Left:
        case Qt::Key_Right:
            ke->accept();
        default:
            break;
        }
    }