qmessagebox.cpp

奇趣公司比较新的qt/emd版本

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#include <QtGui/qmessagebox.h>

#ifndef QT_NO_MESSAGEBOX

#include <QtGui/qdialogbuttonbox.h>
#include "private/qlabel_p.h"
#include <QtCore/qlist.h>
#include <QtCore/qdebug.h>
#include <QtGui/qstyle.h>
#include <QtGui/qstyleoption.h>
#include <QtGui/qgridlayout.h>
#include <QtGui/qdesktopwidget.h>
#include <QtGui/qpushbutton.h>
#include <QtGui/qaccessible.h>
#include <QtGui/qicon.h>
#include <QtGui/qtextdocument.h>
#include <QtGui/qapplication.h>
#include <QtGui/qtextedit.h>
#include <QtGui/qmenu.h>
#include "qdialog_p.h"
#include <QtGui/qfont.h>
#include <QtGui/qfontmetrics.h>
#include <QtGui/qclipboard.h>

enum Button { Old_Ok = 1, Old_Cancel = 2, Old_Yes = 3, Old_No = 4, Old_Abort = 5, Old_Retry = 6,
              Old_Ignore = 7, Old_YesAll = 8, Old_NoAll = 9, Old_ButtonMask = 0xFF,
              NewButtonFlag = 0xFFFFFC00 };

enum DetailButtonLabel { ShowLabel = 0, HideLabel = 1 };
#ifndef QT_NO_TEXTEDIT
class QMessageBoxDetailsText : public QWidget
{
public:
    class TextEdit : public QTextEdit
    {
    public:
        TextEdit(QWidget *parent=0) : QTextEdit(parent) { }
        void contextMenuEvent(QContextMenuEvent * e)
        {
#ifdef QT_NO_CONTEXTMENU
            Q_UNUSED(e);
#else
            QMenu *menu = createStandardContextMenu();
            menu->exec(e->globalPos());
            delete menu;
#endif
        }
    };

    QMessageBoxDetailsText(QWidget *parent=0)
        : QWidget(parent)
    {
        QVBoxLayout *layout = new QVBoxLayout;
        layout->setMargin(0);
        QFrame *line = new QFrame(this);
        line->setFrameShape(QFrame::HLine);
        line->setFrameShadow(QFrame::Sunken);
        layout->addWidget(line);
        textEdit = new TextEdit();
        textEdit->setFixedHeight(100);
        textEdit->setFocusPolicy(Qt::NoFocus);
        textEdit->setReadOnly(true);
        layout->addWidget(textEdit);
        setLayout(layout);
    }
    void setText(const QString &text) { textEdit->setPlainText(text); }
    QString text() const { return textEdit->toPlainText(); }
    QString label(DetailButtonLabel label)
        { return label == ShowLabel ? QMessageBox::tr("Show Details...")
                                    : QMessageBox::tr("Hide Details..."); }
private:
    TextEdit *textEdit;
};
#endif // QT_NO_TEXTEDIT

#ifndef QT_NO_IMAGEFORMAT_XPM
/* XPM */
static const char * const qtlogo_xpm[] = {
/* width height ncolors chars_per_pixel */
"50 50 17 1",
/* colors */
"  c #000000",
". c #495808",
"X c #2A3304",
"o c #242B04",
"O c #030401",
"+ c #9EC011",
"@ c #93B310",
"# c #748E0C",
"$ c #A2C511",
"% c #8BA90E",
"& c #99BA10",
"* c #060701",
"= c #181D02",
"- c #212804",
"; c #61770A",
": c #0B0D01",
"/ c None",
/* pixels */
"/$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$/",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$+++$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$@;.o=::=o.;@$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$+#X*         **X#+$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$#oO*         O  **o#+$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$&.* OO              O*.&$$$$$$$$$$$$$",
"$$$$$$$$$$$$@XOO            * OO    X&$$$$$$$$$$$$",
"$$$$$$$$$$$@XO OO  O  **:::OOO OOO   X@$$$$$$$$$$$",
"$$$$$$$$$$&XO      O-;#@++@%.oOO      X&$$$$$$$$$$",
"$$$$$$$$$$.O  :  *-#+$$$$$$$$+#- : O O*.$$$$$$$$$$",
"$$$$$$$$$#*OO  O*.&$$$$$$$$$$$$+.OOOO **#$$$$$$$$$",
"$$$$$$$$+-OO O *;$$$$$$$$$$$&$$$$;*     o+$$$$$$$$",
"$$$$$$$$#O*  O .+$$$$$$$$$$@X;$$$+.O    *#$$$$$$$$",
"$$$$$$$$X*    -&$$$$$$$$$$@- :;$$$&-    OX$$$$$$$$",
"$$$$$$$@*O  *O#$$$$$$$$$$@oOO**;$$$#    O*%$$$$$$$",
"$$$$$$$;     -+$$$$$$$$$@o O OO ;+$$-O   *;$$$$$$$",
"$$$$$$$.     ;$$$$$$$$$@-OO OO  X&$$;O    .$$$$$$$",
"$$$$$$$o    *#$$$$$$$$@o  O O O-@$$$#O   *o$$$$$$$",
"$$$$$$+=    *@$$$$$$$@o* OO   -@$$$$&:    =$$$$$$$",
"$$$$$$+:    :+$$$$$$@-      *-@$$$$$$:    :+$$$$$$",
"$$$$$$+:    :+$$$$$@o* O    *-@$$$$$$:    :+$$$$$$",
"$$$$$$$=    :@$$$$@o*OOO      -@$$$$@:    =+$$$$$$",
"$$$$$$$-    O%$$$@o* O O    O O-@$$$#*   OX$$$$$$$",
"$$$$$$$. O *O;$$&o O*O* *O      -@$$;    O.$$$$$$$",
"$$$$$$$;*   Oo+$$;O*O:OO--      Oo@+=    *;$$$$$$$",
"$$$$$$$@*  O O#$$$;*OOOo@@-O     Oo;O*  **@$$$$$$$",
"$$$$$$$$X* OOO-+$$$;O o@$$@-    O O     OX$$$$$$$$",
"$$$$$$$$#*  * O.$$$$;X@$$$$@-O O        O#$$$$$$$$",
"$$$$$$$$+oO O OO.+$$+&$$$$$$@-O         o+$$$$$$$$",
"$$$$$$$$$#*    **.&$$$$$$$$$$@o      OO:#$$$$$$$$$",
"$$$$$$$$$+.   O* O-#+$$$$$$$$+;O    OOO:@$$$$$$$$$",
"$$$$$$$$$$&X  *O    -;#@++@#;=O    O    -@$$$$$$$$",
"$$$$$$$$$$$&X O     O*O::::O      OO    Oo@$$$$$$$",
"$$$$$$$$$$$$@XOO                  OO    O*X+$$$$$$",
"$$$$$$$$$$$$$&.*       **  O      ::    *:#$$$$$$$",
"$$$$$$$$$$$$$$$#o*OO       O    Oo#@-OOO=#$$$$$$$$",
"$$$$$$$$$$$$$$$$+#X:* *     O**X#+$$@-*:#$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$%;.o=::=o.#@$$$$$$@X#$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$+++$$$$$$$$$$$+$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$",
"/$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$/",
};
#endif // QT_NO_IMAGEFORMAT_XPM

class QMessageBoxPrivate : public QDialogPrivate
{
    Q_DECLARE_PUBLIC(QMessageBox)

public:
    QMessageBoxPrivate() : escapeButton(0), defaultButton(0), clickedButton(0), detailsButton(0),
#ifndef QT_NO_TEXTEDIT
                           detailsText(0),
#endif
                           compatMode(false), autoAddOkButton(true),
                           detectedEscapeButton(0), informativeLabel(0) { }

    void init(const QString &title = QString(), const QString &text = QString());
    void _q_buttonClicked(QAbstractButton *);

    QAbstractButton *findButton(int button0, int button1, int button2, int flags);
    void addOldButtons(int button0, int button1, int button2);

    QAbstractButton *abstractButtonForId(int id) const;
    int execReturnCode(QAbstractButton *button);

    void detectEscapeButton();
    void updateSize();
    int layoutMinimumWidth();
    void retranslateStrings();

    static int showOldMessageBox(QWidget *parent, QMessageBox::Icon icon,
                                 const QString &title, const QString &text,
                                 int button0, int button1, int button2);
    static int showOldMessageBox(QWidget *parent, QMessageBox::Icon icon,
                                 const QString &title, const QString &text,
                                 const QString &button0Text,
                                 const QString &button1Text,
                                 const QString &button2Text,
                                 int defaultButtonNumber,
                                 int escapeButtonNumber);

    static QMessageBox::StandardButton showNewMessageBox(QWidget *parent,
                QMessageBox::Icon icon, const QString& title, const QString& text,
                QMessageBox::StandardButtons buttons, QMessageBox::StandardButton defaultButton);

    QLabel *label;
    QMessageBox::Icon icon;
    QLabel *iconLabel;
    QDialogButtonBox *buttonBox;
    QList<QAbstractButton *> customButtonList;
    QAbstractButton *escapeButton;
    QPushButton *defaultButton;
    QAbstractButton *clickedButton;
    QPushButton *detailsButton;
#ifndef QT_NO_TEXTEDIT
    QMessageBoxDetailsText *detailsText;
#endif
    bool compatMode;
    bool autoAddOkButton;
    QAbstractButton *detectedEscapeButton;
    QLabel *informativeLabel;
};

static QString *translatedTextAboutQt = 0;

void QMessageBoxPrivate::init(const QString &title, const QString &text)
{
    Q_Q(QMessageBox);

    if (!translatedTextAboutQt) {
        translatedTextAboutQt = new QString;
    }

    label = new QLabel;
    label->setObjectName(QLatin1String("qt_msgbox_label"));
    label->setTextInteractionFlags(Qt::TextInteractionFlags(q->style()->styleHint(QStyle::SH_MessageBox_TextInteractionFlags, 0, q)));
    label->setAlignment(Qt::AlignVCenter | Qt::AlignLeft);
    label->setOpenExternalLinks(true);
#if defined(Q_WS_MAC)
    label->setContentsMargins(16, 0, 0, 8);
#elif !defined(Q_WS_QWS)
    label->setContentsMargins(2, 0, 0, 0);
    label->setIndent(9);
#endif
    icon = QMessageBox::NoIcon;
    iconLabel = new QLabel;
    iconLabel->setObjectName(QLatin1String("qt_msgboxex_icon_label"));
    iconLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

    buttonBox = new QDialogButtonBox;
    buttonBox->setObjectName(QLatin1String("qt_msgbox_buttonbox"));
    buttonBox->setCenterButtons(q->style()->styleHint(QStyle::SH_MessageBox_CenterButtons, 0, q));
    QObject::connect(buttonBox, SIGNAL(clicked(QAbstractButton*)),
                     q, SLOT(_q_buttonClicked(QAbstractButton*)));

    QGridLayout *grid = new QGridLayout;
#ifndef Q_WS_MAC
    grid->addWidget(iconLabel, 0, 0, 2, 1, Qt::AlignTop);
    grid->addWidget(label, 0, 1, 1, 1);
    // -- leave space for information label --
    grid->addWidget(buttonBox, 2, 0, 1, 2);
#else
    grid->setMargin(0);
    grid->setSpacing(0);
    q->setContentsMargins(24, 15, 24, 20);
    grid->addWidget(iconLabel, 0, 0, 2, 1, Qt::AlignTop | Qt::AlignLeft);
    grid->addWidget(label, 0, 1, 1, 1);
    // -- leave space for information label --
    grid->setRowStretch(1, 100);
    grid->setRowMinimumHeight(2, 10);
    grid->addWidget(buttonBox, 3, 1, 1, 1);
#endif

    grid->setSizeConstraint(QLayout::SetNoConstraint);
    q->setLayout(grid);

    if (!title.isEmpty() || !text.isEmpty()) {
        q->setWindowTitle(title);
        q->setText(text);
    }
    q->setModal(true);

#ifdef Q_WS_MAC
    QFont f = q->font();
    f.setBold(true);
    label->setFont(f);
#endif
    retranslateStrings();
}

int QMessageBoxPrivate::layoutMinimumWidth()
{
    Q_Q(QMessageBox);

    q->layout()->activate();
    return q->layout()->totalMinimumSize().width();
}

void QMessageBoxPrivate::updateSize()
{
    Q_Q(QMessageBox);

    if (!q->isVisible())
        return;

    QSize screenSize = QApplication::desktop()->availableGeometry(QCursor::pos()).size();
#ifdef Q_WS_QWS
    // the width of the screen, less the window border.
    int hardLimit = screenSize.width() - (q->frameGeometry().width() - q->geometry().width());
#else
    int hardLimit = qMin(screenSize.width() - 480, 1000); // can never get bigger than this
#endif
#ifdef Q_WS_MAC
    int softLimit = qMin(screenSize.width()/2, 420);
#elif defined(Q_WS_QWS)
    int softLimit = qMin(hardLimit, 500);
#else
    // note: ideally on windows, hard and soft limits but it breaks compat
    int softLimit = qMin(screenSize.width()/2, 500);
#endif

    if (informativeLabel)
        informativeLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);

    label->setWordWrap(false); // makes the label return min size
    int width = layoutMinimumWidth();

    if (width > softLimit) {
        label->setWordWrap(true);
        width = qMax(softLimit, layoutMinimumWidth());

        if (width > hardLimit) {
            label->d_func()->ensureTextControl();
            if (QTextControl *control = label->d_func()->control) {
                QTextOption opt = control->document()->defaultTextOption();
                opt.setWrapMode(QTextOption::WrapAnywhere);
                control->document()->setDefaultTextOption(opt);
            }
            width = hardLimit;
        }
    }

    if (informativeLabel) {
        label->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
        if (layoutMinimumWidth() > hardLimit) { // longest word is really big, so wrap anywhere
            informativeLabel->d_func()->ensureTextControl();
            if (QTextControl *control = informativeLabel->d_func()->control) {
                QTextOption opt = control->document()->defaultTextOption();
                opt.setWrapMode(QTextOption::WrapAnywhere);
                control->document()->setDefaultTextOption(opt);
            }
        }
        QSizePolicy policy(QSizePolicy::Preferred, QSizePolicy::Preferred);
        policy.setHeightForWidth(label->wordWrap());
        label->setSizePolicy(policy);
        policy.setHeightForWidth(true);
        informativeLabel->setSizePolicy(policy);
    }

    QFontMetrics fm(qApp->font("QWorkspaceTitleBar"));
    int windowTitleWidth = qMin(fm.width(q->windowTitle()) + 50, hardLimit);
    if (windowTitleWidth > width)
        width = windowTitleWidth;

    q->layout()->activate();
    int height = (q->layout()->hasHeightForWidth())
                     ? q->layout()->totalHeightForWidth(width)