QProgressBarPrivate Class Reference

Inheritance diagram for QProgressBarPrivate:

[legend]Collaboration diagram for QProgressBarPrivate:

[legend]List of all members.

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Detailed Description

Definition at line 36 of file qprogressbar.cpp.

Public Member Functions
	QProgressBarPrivate ()
void	init ()
QStyleOptionProgressBarV2	getStyleOption () const
int	bound (int val) const
bool	repaintRequired () const
Public Attributes
int	minimum
int	maximum
int	value
Qt::Alignment	alignment
uint	textVisible: 1
int	lastPaintedValue
Qt::Orientation	orientation
bool	invertedAppearance
QProgressBar::Direction	textDirection
QString	format

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Constructor & Destructor Documentation

QProgressBarPrivate::QProgressBarPrivate

(

)

Definition at line 58 of file qprogressbar.cpp.

    : minimum(0), maximum(100), value(-1), alignment(Qt::AlignLeft), textVisible(true),
      lastPaintedValue(-1), orientation(Qt::Horizontal), invertedAppearance(false),
      textDirection(QProgressBar::TopToBottom), format(QLatin1String("%p%"))
{
}

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Member Function Documentation

void QProgressBarPrivate::init

(

)

Definition at line 65 of file qprogressbar.cpp.

References QSizePolicy::Expanding, QSizePolicy::Fixed, orientation, QSizePolicy::transpose(), Qt::Vertical, and Qt::WA_WState_OwnSizePolicy.

{
    Q_Q(QProgressBar);
    QSizePolicy sp(QSizePolicy::Expanding, QSizePolicy::Fixed);
    if (orientation == Qt::Vertical)
        sp.transpose();
    q->setSizePolicy(sp);
    q->setAttribute(Qt::WA_WState_OwnSizePolicy, false);
}

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QStyleOptionProgressBarV2 QProgressBarPrivate::getStyleOption

(

)

const

Definition at line 75 of file qprogressbar.cpp.

References alignment, QStyleOptionProgressBarV2::bottomToTop, QProgressBar::BottomToTop, QStyleOption::init(), invertedAppearance, QStyleOptionProgressBarV2::invertedAppearance, maximum, QStyleOptionProgressBar::maximum, minimum, QStyleOptionProgressBar::minimum, orientation, QStyleOptionProgressBarV2::orientation, QStyleOptionProgressBar::progress, QStyleOptionProgressBar::text, QStyleOptionProgressBar::textAlignment, textDirection, textVisible, QStyleOptionProgressBar::textVisible, and value.

Referenced by repaintRequired().

{
    QStyleOptionProgressBarV2 opt;
    opt.init(q_func());

    opt.minimum = minimum;
    opt.maximum = maximum;
    opt.progress = value;
    opt.textAlignment = alignment;
    opt.textVisible = textVisible;
    opt.text = q_func()->text();
    opt.orientation = orientation;
    opt.invertedAppearance = invertedAppearance;
    opt.bottomToTop = (textDirection == QProgressBar::BottomToTop);

    return opt;
}

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int QProgressBarPrivate::bound

(

int

val

)

const [inline]

Definition at line 54 of file qprogressbar.cpp.

References maximum, minimum, qMax(), and qMin().

{ return qMax(minimum-1, qMin(maximum, val)); }

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bool QProgressBarPrivate::repaintRequired

(

)

const

Definition at line 93 of file qprogressbar.cpp.

References getStyleOption(), lastPaintedValue, maximum, minimum, QStyle::PM_ProgressBarChunkWidth, QStyle::SE_ProgressBarGroove, textVisible, value, and QRect::width().

{
    Q_Q(const QProgressBar);
    if (value == lastPaintedValue)
        return false;

    int valueDifference = qAbs(value - lastPaintedValue);

    // Check if the text needs to be repainted
    if ((value == minimum || value == maximum)
            || (textVisible && valueDifference >= qAbs((maximum - minimum) / 100)))
        return true;

    // Check if the bar needs to be repainted
    QStyleOptionProgressBarV2 opt = getStyleOption();
    int cw = q->style()->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &opt, q);
    QRect groove  = q->style()->subElementRect(QStyle::SE_ProgressBarGroove, &opt, q);
    // This expression is basically
    // (valueDifference / (maximum - minimum) > cw / groove.width())
    // transformed to avoid integer division.
    return (valueDifference * groove.width() > cw * (maximum - minimum));
}

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Member Data Documentation

int QProgressBarPrivate::minimum

Definition at line 43 of file qprogressbar.cpp.

Referenced by bound(), getStyleOption(), and repaintRequired().

int QProgressBarPrivate::maximum

Definition at line 44 of file qprogressbar.cpp.

Referenced by bound(), getStyleOption(), and repaintRequired().

int QProgressBarPrivate::value

Definition at line 45 of file qprogressbar.cpp.

Referenced by getStyleOption(), and repaintRequired().

Qt::Alignment QProgressBarPrivate::alignment

Definition at line 46 of file qprogressbar.cpp.

Referenced by getStyleOption().

uint QProgressBarPrivate::textVisible

Definition at line 47 of file qprogressbar.cpp.

Referenced by getStyleOption(), and repaintRequired().

int QProgressBarPrivate::lastPaintedValue

Definition at line 48 of file qprogressbar.cpp.

Referenced by repaintRequired().

Qt::Orientation QProgressBarPrivate::orientation

Definition at line 49 of file qprogressbar.cpp.

Referenced by getStyleOption(), and init().

bool QProgressBarPrivate::invertedAppearance

Definition at line 50 of file qprogressbar.cpp.

Referenced by getStyleOption().

QProgressBar::Direction QProgressBarPrivate::textDirection

Definition at line 51 of file qprogressbar.cpp.

Referenced by getStyleOption().

QString QProgressBarPrivate::format

Definition at line 52 of file qprogressbar.cpp.

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The documentation for this class was generated from the following file:

• src/gui/widgets/qprogressbar.cpp

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