diff options
Diffstat (limited to 'src/gui/widgets/qscrollbar.cpp')
| -rw-r--r-- | src/gui/widgets/qscrollbar.cpp | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/src/gui/widgets/qscrollbar.cpp b/src/gui/widgets/qscrollbar.cpp index 67f34eb..c895b1b 100644 --- a/src/gui/widgets/qscrollbar.cpp +++ b/src/gui/widgets/qscrollbar.cpp @@ -82,21 +82,21 @@ QT_BEGIN_NAMESPACE needs. \table - \row \i \image qscrollbar-picture.png - \i Scroll bars typically include four separate controls: a slider, + \row \o \image qscrollbar-picture.png + \o Scroll bars typically include four separate controls: a slider, scroll arrows, and a page control. \list - \i a. The slider provides a way to quickly go to any part of the + \o a. The slider provides a way to quickly go to any part of the document, but does not support accurate navigation within large documents. - \i b. The scroll arrows are push buttons which can be used to accurately + \o b. The scroll arrows are push buttons which can be used to accurately navigate to a particular place in a document. For a vertical scroll bar connected to a text editor, these typically move the current position one "line" up or down, and adjust the position of the slider by a small amount. In editors and list boxes a "line" might mean one line of text; in an image viewer it might mean 20 pixels. - \i c. The page control is the area over which the slider is dragged (the + \o c. The page control is the area over which the slider is dragged (the scroll bar's background). Clicking here moves the scroll bar towards the click by one "page". This value is usually the same as the length of the slider. @@ -134,13 +134,12 @@ QT_BEGIN_NAMESPACE value of 80. This would give us a scroll bar with five "pages". \table - \row \i \inlineimage qscrollbar-values.png - \i The relationship between a document length, the range of values used + \row \o \inlineimage qscrollbar-values.png + \o The relationship between a document length, the range of values used in a scroll bar, and the page step is simple in many common situations. The scroll bar's range of values is determined by subtracting a chosen page step from some value representing the length of the document. In such cases, the following equation is useful: - \e{document length} = maximum() - minimum() + pageStep(). \endtable @@ -153,18 +152,18 @@ QT_BEGIN_NAMESPACE ScrollBar inherits a comprehensive set of signals from QAbstractSlider: \list - \i \l{QAbstractSlider::valueChanged()}{valueChanged()} is emitted when the + \o \l{QAbstractSlider::valueChanged()}{valueChanged()} is emitted when the scroll bar's value has changed. The tracking() determines whether this signal is emitted during user interaction. - \i \l{QAbstractSlider::rangeChanged()}{rangeChanged()} is emitted when the + \o \l{QAbstractSlider::rangeChanged()}{rangeChanged()} is emitted when the scroll bar's range of values has changed. - \i \l{QAbstractSlider::sliderPressed()}{sliderPressed()} is emitted when + \o \l{QAbstractSlider::sliderPressed()}{sliderPressed()} is emitted when the user starts to drag the slider. - \i \l{QAbstractSlider::sliderMoved()}{sliderMoved()} is emitted when the user + \o \l{QAbstractSlider::sliderMoved()}{sliderMoved()} is emitted when the user drags the slider. - \i \l{QAbstractSlider::sliderReleased()}{sliderReleased()} is emitted when + \o \l{QAbstractSlider::sliderReleased()}{sliderReleased()} is emitted when the user releases the slider. - \i \l{QAbstractSlider::actionTriggered()}{actionTriggered()} is emitted + \o \l{QAbstractSlider::actionTriggered()}{actionTriggered()} is emitted when the scroll bar is changed by user interaction or via the \l{QAbstractSlider::triggerAction()}{triggerAction()} function. \endlist @@ -173,12 +172,12 @@ QT_BEGIN_NAMESPACE default focusPolicy() of Qt::NoFocus. Use setFocusPolicy() to enable keyboard interaction with the scroll bar: \list - \i Left/Right move a horizontal scroll bar by one single step. - \i Up/Down move a vertical scroll bar by one single step. - \i PageUp moves up one page. - \i PageDown moves down one page. - \i Home moves to the start (mininum). - \i End moves to the end (maximum). + \o Left/Right move a horizontal scroll bar by one single step. + \o Up/Down move a vertical scroll bar by one single step. + \o PageUp moves up one page. + \o PageDown moves down one page. + \o Home moves to the start (mininum). + \o End moves to the end (maximum). \endlist The slider itself can be controlled by using the |