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Establish an opacity property for the QWindow

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Change-Id: I1e399a41bc3aa890498d579f48d03cc6dee484bf
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
This commit is contained in:
Laszlo Papp 2013-01-24 00:27:41 +00:00 committed by The Qt Project
parent 855b0d5049
commit 5f481c98de
2 changed files with 19 additions and 3 deletions
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17
src/gui/kernel/qwindow.cpp
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@ -642,7 +642,8 @@ void QWindow::lower()
} }
/*! /*!
Sets the window's opacity in the windowing system to \a level. \property QWindow::opacity
\brief The opacity of the window in the windowing system.
If the windowing system supports window opacity, this can be used to fade the If the windowing system supports window opacity, this can be used to fade the
window in and out, or to make it semitransparent. window in and out, or to make it semitransparent.
@ -650,15 +651,25 @@ void QWindow::lower()
A value of 1.0 or above is treated as fully opaque, whereas a value of 0.0 or below A value of 1.0 or above is treated as fully opaque, whereas a value of 0.0 or below
is treated as fully transparent. Values inbetween represent varying levels of is treated as fully transparent. Values inbetween represent varying levels of
translucency between the two extremes. translucency between the two extremes.
The default value is 1.0.
*/ */
void QWindow::setOpacity(qreal level) void QWindow::setOpacity(qreal level)
{ {
Q_D(QWindow); Q_D(QWindow);
if (level == d->opacity) // #fixme: Add property for 5.1 if (level == d->opacity)
return; return;
d->opacity = level; d->opacity = level;
if (d->platformWindow) if (d->platformWindow) {
d->platformWindow->setOpacity(level); d->platformWindow->setOpacity(level);
emit opacityChanged(level);
}
}
qreal QWindow::opacity() const
{
Q_D(const QWindow);
return d->opacity;
} }
/*! /*!

5
src/gui/kernel/qwindow.h
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@ -112,6 +112,7 @@ class Q_GUI_EXPORT QWindow : public QObject, public QSurface
Q_PROPERTY(int maximumHeight READ maximumHeight WRITE setMaximumHeight NOTIFY maximumHeightChanged) Q_PROPERTY(int maximumHeight READ maximumHeight WRITE setMaximumHeight NOTIFY maximumHeightChanged)
Q_PROPERTY(bool visible READ isVisible WRITE setVisible NOTIFY visibleChanged) Q_PROPERTY(bool visible READ isVisible WRITE setVisible NOTIFY visibleChanged)
Q_PROPERTY(Qt::ScreenOrientation contentOrientation READ contentOrientation WRITE reportContentOrientationChange NOTIFY contentOrientationChanged) Q_PROPERTY(Qt::ScreenOrientation contentOrientation READ contentOrientation WRITE reportContentOrientationChange NOTIFY contentOrientationChanged)
Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity NOTIFY opacityChanged)
public: public:
@ -148,6 +149,8 @@ public:
QString title() const; QString title() const;
void setOpacity(qreal level); void setOpacity(qreal level);
qreal opacity() const;
void requestActivate(); void requestActivate();
bool isActive() const; bool isActive() const;
@ -287,6 +290,8 @@ Q_SIGNALS:
void focusObjectChanged(QObject *object); void focusObjectChanged(QObject *object);
void opacityChanged(qreal opacity);
private Q_SLOTS: private Q_SLOTS:
void screenDestroyed(QObject *screen); void screenDestroyed(QObject *screen);