/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Styles/Base/TumblerStyle.qml is in qml-module-qtquick-controls 5.7.1~20161021-2.
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**
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import QtQuick 2.0
import QtGraphicalEffects 1.0
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
import QtQuick.Controls.Private 1.0
import QtQuick.Extras 1.4
import QtQuick.Extras.Private 1.0
/*!
\qmltype TumblerStyle
\inqmlmodule QtQuick.Controls.Styles
\since 5.5
\ingroup controlsstyling
\brief Provides custom styling for Tumbler.
You can create a custom tumbler by replacing the following delegates:
\list
\li \l background
\li \l foreground
\li \l separator
\li \l delegate
\li \l highlight
\li \l frame
\endlist
*/
Style {
id: tumblerStyle
padding.left: __padding
padding.right: __padding
padding.top: __padding
padding.bottom: __padding
/*!
The \l Tumbler that this style is attached to.
*/
readonly property Tumbler control: __control
/*!
This property holds the spacing between each delegate.
*/
property real spacing: 0
/*!
This property holds the amount of items visible in each column.
This value should be an odd number.
*/
property int visibleItemCount: 3
/*!
\internal
TODO: how do we handle differing padding values?
*/
readonly property real __padding: Math.max(6, Math.round(TextSingleton.implicitHeight * 0.4))
/*! \internal */
property real __delegateHeight: 0
/*! \internal */
property real __separatorWidth: 0
/*!
The background of the tumbler.
*/
property Component background: Rectangle {
gradient: Gradient {
GradientStop { position: 0.00; color: "#acacac" }
GradientStop { position: 0.12; color: "#d5d5d5" }
GradientStop { position: 0.24; color: "#e8e8e8" }
GradientStop { position: 0.39; color: "#ffffff" }
GradientStop { position: 0.61; color: "#ffffff" }
GradientStop { position: 0.76; color: "#e8e8e8" }
GradientStop { position: 0.88; color: "#d5d5d5" }
GradientStop { position: 1.00; color: "#acacac" }
}
}
/*!
The foreground of the tumbler.
*/
property Component foreground: Item {
clip: true
Rectangle {
id: rect
anchors.fill: parent
// Go one pixel larger than our parent so that we can hide our one pixel frame
// that the shadow is created from.
anchors.margins: -1
color: "transparent"
border.color: "black"
visible: false
}
DropShadow {
anchors.fill: rect
source: rect
samples: 15
spread: 0.45
cached: true
}
}
/*!
The separator between each column.
The \l {Item::}{implicitWidth} property must be set, and should be the
same value for each separator.
*/
property Component separator: Canvas {
implicitWidth: Math.max(10, Math.round(TextSingleton.implicitHeight * 0.4))
onPaint: {
var ctx = getContext("2d");
ctx.reset();
ctx.fillStyle = "#11000000";
ctx.fillRect(0, 0, width, height);
ctx.fillStyle = "#11000000";
ctx.fillRect(width * 0.2, 0, width * 0.6, height);
ctx.fillStyle = "#66000000";
ctx.fillRect(width * 0.4, 0, width * 0.2, height);
}
}
/*!
The foreground of each column.
In terms of stacking order, this component is displayed above the
delegate and highlight components, but below the foreground component.
\table
\row \li \c {readonly property int} \b styleData.column
\li The index of the column that contains this item.
\row \li \c {readonly property bool} \b styleData.activeFocus
\li \c true if the column that contains this item has active focus.
\endtable
Delegates for items in specific columns can be defined using
TumblerColumn's \l {TumblerColumn::columnForeground}{columnForeground}
property, which will be used instead of this component.
*/
property Component columnForeground
/*!
The frame around the tumbler.
The \l {Item::}{implicitWidth} property must be set, and should be the
same value for each separator.
*/
property Component frame: Canvas {
onPaint: {
// workaround for QTBUG-40792
var ctx = getContext("2d");
ctx.reset();
var cornerRadius = Math.max(2, Math.round(TextSingleton.implicitHeight * 0.2));
var outerLineWidth = Math.max(1, Math.round(TextSingleton.implicitHeight * 0.05));
var innerLineWidth = __padding - outerLineWidth;
ctx.save();
ctx.lineWidth = outerLineWidth;
ctx.beginPath();
ctx.roundedRect(0, 0, width, height, cornerRadius, cornerRadius);
ctx.roundedRect(outerLineWidth, outerLineWidth, width - outerLineWidth * 2, height - outerLineWidth * 2,
cornerRadius - outerLineWidth, cornerRadius - outerLineWidth);
ctx.clip();
ctx.beginPath();
ctx.rect(0, 0, width, height);
var gradient = ctx.createLinearGradient(width / 2, 0, width / 2, height);
gradient.addColorStop(0, "#33b3b3b3");
gradient.addColorStop(1, "#4ce6e6e6");
ctx.fillStyle = gradient;
ctx.fill();
ctx.restore();
// The inner stroke must account for its corner radius.
cornerRadius -= outerLineWidth;
ctx.save();
ctx.lineWidth = innerLineWidth;
ctx.beginPath();
ctx.roundedRect(outerLineWidth, outerLineWidth, width - outerLineWidth * 2, height - outerLineWidth * 2,
cornerRadius, cornerRadius);
ctx.roundedRect(outerLineWidth + innerLineWidth, outerLineWidth + innerLineWidth,
width - outerLineWidth * 2 - innerLineWidth * 2, height - outerLineWidth * 2 - innerLineWidth * 2,
cornerRadius - innerLineWidth, cornerRadius - innerLineWidth);
ctx.clip();
ctx.beginPath();
ctx.rect(0, 0, width, height);
gradient = ctx.createLinearGradient(width / 2, 0, width / 2, height);
gradient.addColorStop(0, "#4c666666");
gradient.addColorStop(1, "#40cccccc");
ctx.fillStyle = gradient;
ctx.fill();
ctx.restore();
}
}
/*!
The delegate provides a template defining each item instantiated in the
column. Each instance of this component has access to the following properties:
\table
\row \li \c {readonly property int} \b styleData.index
\li The index of this delegate in the model.
\row \li \c {readonly property int} \b styleData.column
\li The index of the column that contains this item.
\row \li \c {readonly property real} \b styleData.value
\li The value for this delegate from the model.
\row \li \c {readonly property bool} \b styleData.current
\li \c true if this delegate is the current item.
\row \li \c {readonly property real} \b styleData.displacement
\li \c A value from \c {-visibleItemCount / 2} to
\c {visibleItemCount / 2} which represents how far away
this item is from being the current item, with \c 0 being
completely current.
For example, the item below will be 40% opaque when
it is not the current item, and transition to 100%
opacity when it becomes the current item:
\code
delegate: Text {
text: styleData.value
opacity: 0.4 + Math.max(0, 1 - Math.abs(styleData.displacement)) * 0.6
}
\endcode
\row \li \c {readonly property bool} \b styleData.activeFocus
\li \c true if the column that contains this item has active focus.
\endtable
Properties of the model are also available depending upon the type of
\l {qml-data-models}{Data Model}.
Delegates for items in specific columns can be defined using
TumblerColumn's \l {TumblerColumn::delegate}{delegate} property, which
will be used instead of this delegate.
The \l {Item::}{implicitHeight} property must be set, and it must be
the same for each delegate.
*/
property Component delegate: Item {
implicitHeight: (control.height - padding.top - padding.bottom) / tumblerStyle.visibleItemCount
Text {
id: label
text: styleData.value
color: "#666666"
opacity: 0.4 + Math.max(0, 1 - Math.abs(styleData.displacement)) * 0.6
font.pixelSize: Math.round(TextSingleton.font.pixelSize * 1.25)
anchors.centerIn: parent
}
}
/*!
The delegate for the highlight of each column.
Delegates for the highlight of specific columns can be defined using
TumblerColumn's \l {TumblerColumn::highlight}{highlight} property,
which will be used instead of this delegate.
Each instance of this component has access to the following properties:
\table
\row \li \c {readonly property int} \b styleData.index
\li The index of this column in the tumbler.
\row \li \c {readonly property int} \b styleData.columnIndex
\li The index of the column that contains this highlight.
\row \li \c {readonly property bool} \b styleData.activeFocus
\li \c true if the column that contains this highlight has active focus.
\endtable
*/
property Component highlight
/*! \internal */
property Component panel: Item {
implicitWidth: {
var w = (__separatorWidth * (control.columnCount - 1)) + tumblerStyle.padding.left + tumblerStyle.padding.right;
for (var i = 0; i < control.columnCount; ++i)
w += control.getColumn(i).width;
return w;
}
implicitHeight: TextSingleton.implicitHeight * 10 + tumblerStyle.padding.top + tumblerStyle.padding.bottom
}
}
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