| 1 | // Copyright (C) 2017 The Qt Company Ltd. |
|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
|---|
| 3 | |
|---|
| 4 | #include "qquickbusyindicator_p.h" |
|---|
| 5 | #include "qquickcontrol_p_p.h" |
|---|
| 6 | |
|---|
| 7 | QT_BEGIN_NAMESPACE |
|---|
| 8 | |
|---|
| 9 | /*! |
|---|
| 10 | \qmltype BusyIndicator |
|---|
| 11 | \inherits Control |
|---|
| 12 | //! \instantiates QQuickBusyIndicator |
|---|
| 13 | \inqmlmodule QtQuick.Controls |
|---|
| 14 | \since 5.7 |
|---|
| 15 | \ingroup qtquickcontrols-indicators |
|---|
| 16 | \brief Indicates background activity, for example, while content is being loaded. |
|---|
| 17 | |
|---|
| 18 | \image qtquickcontrols-busyindicator.gif |
|---|
| 19 | |
|---|
| 20 | The busy indicator should be used to indicate activity while content is |
|---|
| 21 | being loaded or the UI is blocked waiting for a resource to become available. |
|---|
| 22 | |
|---|
| 23 | The following snippet shows how to use the BusyIndicator: |
|---|
| 24 | |
|---|
| 25 | \qml |
|---|
| 26 | BusyIndicator { |
|---|
| 27 | running: image.status === Image.Loading |
|---|
| 28 | } |
|---|
| 29 | \endqml |
|---|
| 30 | |
|---|
| 31 | BusyIndicator is similar to an indeterminate \l ProgressBar. Both can be |
|---|
| 32 | used to indicate background activity. The main difference is visual, and |
|---|
| 33 | that ProgressBar can also present a concrete amount of progress (when it |
|---|
| 34 | can be determined). Due to the visual difference, busy indicators and |
|---|
| 35 | indeterminate progress bars fit different places in user interfaces. |
|---|
| 36 | Typical places for a busy indicator: |
|---|
| 37 | \list |
|---|
| 38 | \li in the corner of a \l ToolBar |
|---|
| 39 | \li as an overlay on top of a \l Page |
|---|
| 40 | \li on the side of an \l ItemDelegate |
|---|
| 41 | \endlist |
|---|
| 42 | |
|---|
| 43 | \sa {Customizing BusyIndicator}, {Indicator Controls}, ProgressBar |
|---|
| 44 | */ |
|---|
| 45 | |
|---|
| 46 | class QQuickBusyIndicatorPrivate : public QQuickControlPrivate |
|---|
| 47 | { |
|---|
| 48 | public: |
|---|
| 49 | bool running = true; |
|---|
| 50 | }; |
|---|
| 51 | |
|---|
| 52 | QQuickBusyIndicator::QQuickBusyIndicator(QQuickItem *parent) |
|---|
| 53 | : QQuickControl(*(new QQuickBusyIndicatorPrivate), parent) |
|---|
| 54 | { |
|---|
| 55 | } |
|---|
| 56 | |
|---|
| 57 | /*! |
|---|
| 58 | \qmlproperty bool QtQuick.Controls::BusyIndicator::running |
|---|
| 59 | |
|---|
| 60 | This property holds whether the busy indicator is currently indicating |
|---|
| 61 | activity. |
|---|
| 62 | |
|---|
| 63 | \note The indicator is only visible when this property is set to \c true. |
|---|
| 64 | |
|---|
| 65 | The default value is \c true. |
|---|
| 66 | */ |
|---|
| 67 | bool QQuickBusyIndicator::isRunning() const |
|---|
| 68 | { |
|---|
| 69 | Q_D(const QQuickBusyIndicator); |
|---|
| 70 | return d->running; |
|---|
| 71 | } |
|---|
| 72 | |
|---|
| 73 | void QQuickBusyIndicator::setRunning(bool running) |
|---|
| 74 | { |
|---|
| 75 | Q_D(QQuickBusyIndicator); |
|---|
| 76 | if (d->running == running) |
|---|
| 77 | return; |
|---|
| 78 | |
|---|
| 79 | d->running = running; |
|---|
| 80 | emit runningChanged(); |
|---|
| 81 | } |
|---|
| 82 | |
|---|
| 83 | #if QT_CONFIG(quicktemplates2_multitouch) |
|---|
| 84 | void QQuickBusyIndicator::touchEvent(QTouchEvent *event) |
|---|
| 85 | { |
|---|
| 86 | event->ignore(); // QTBUG-61785 |
|---|
| 87 | } |
|---|
| 88 | #endif |
|---|
| 89 | |
|---|
| 90 | #if QT_CONFIG(accessibility) |
|---|
| 91 | QAccessible::Role QQuickBusyIndicator::accessibleRole() const |
|---|
| 92 | { |
|---|
| 93 | return QAccessible::Indicator; |
|---|
| 94 | } |
|---|
| 95 | #endif |
|---|
| 96 | |
|---|
| 97 | QT_END_NAMESPACE |
|---|
| 98 | |
|---|
| 99 | #include "moc_qquickbusyindicator_p.cpp" |
|---|
| 100 | |
|---|
