Current File : C:/Windows/Temp/MBInstallTemp/ctlrpkg/QtQuick/Controls/Styles/Base/PieMenuStyle.qml
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import QtQuick 2.2
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
import QtQuick.Extras.Private.CppUtils 1.0
/*!
\qmltype PieMenuStyle
\inqmlmodule QtQuick.Controls.Styles
\since 5.5
\ingroup controlsstyling
\brief Provides custom styling for PieMenu.
PieMenuStyle is a style for PieMenu that draws each section of the menu as a
filled "slice".
You can create a custom pie menu by replacing the following delegates:
\list
\li \l background
\li \l cancel
\li \l menuItem
\li \l title
\endlist
To customize the appearance of each menuItem without having to define your
own, you can use the \l backgroundColor and \l selectionColor properties.
To customize the drop shadow, use the \l shadowColor, \l shadowRadius and
\l shadowSpread properties.
Icons that are too large for the section that they are in will be scaled
down appropriately.
To style individual sections of the menu, use the menuItem component:
\code
PieMenuStyle {
shadowRadius: 0
menuItem: Item {
id: item
rotation: -90 + sectionCenterAngle(styleData.index)
Rectangle {
width: parent.height * 0.2
height: width
color: "darkorange"
radius: width / 2
anchors.right: parent.right
anchors.verticalCenter: parent.verticalCenter
Text {
id: textItem
text: control.menuItems[styleData.index].text
anchors.centerIn: parent
color: control.currentIndex === styleData.index ? "red" : "white"
rotation: -item.rotation
}
}
}
}
\endcode
\image piemenu-menuitem-example.png A custom PieMenu
*/
Style {
id: pieMenuStyle
/*!
The \l PieMenu that this style is attached to.
*/
readonly property PieMenu control: __control
/*! The background color. */
property color backgroundColor: Qt.rgba(0.6, 0.6, 0.6, 0.66)
/*! The selection color. */
property color selectionColor: "#eee"
/*!
The shadow color.
\sa DropShadow
*/
property color shadowColor: Qt.rgba(0, 0, 0, 0.26)
/*!
The shadow radius.
\sa DropShadow
*/
property real shadowRadius: 10
/*!
The shadow spread.
\sa DropShadow
*/
property real shadowSpread: 0.3
/*!
The distance from the center of the menu to the outer edge of the menu.
\sa cancelRadius
*/
readonly property real radius: Math.min(control.width, control.height) * 0.5
/*!
The radius of the area that is used to cancel the menu.
\sa radius
*/
property real cancelRadius: radius * 0.4
/*!
The angle (in degrees) at which the first menu item will be drawn.
The absolute range formed by \a startAngle and \l endAngle must be
less than or equal to \c 360 degrees.
Menu items are displayed clockwise when \a startAngle is less than
\l endAngle, otherwise they are displayed anti-clockwise.
\sa endAngle
*/
property real startAngle: -90
/*!
The angle (in degrees) at which the last menu item will be drawn.
The absolute range formed by \l startAngle and \a endAngle must be
less than or equal to \c 360 degrees.
Menu items are displayed clockwise when \l startAngle is less than
\a endAngle, otherwise they are displayed anti-clockwise.
\sa startAngle
*/
property real endAngle: 90
/*!
\qmlmethod real PieMenuStyle::sectionStartAngle(int itemIndex)
Returns the start of the section at \a itemIndex as an angle in degrees.
*/
function sectionStartAngle(itemIndex) {
return MathUtils.radToDegOffset(control.__protectedScope.sectionStartAngle(itemIndex));
}
/*!
\qmlmethod real PieMenuStyle::sectionCenterAngle(int itemIndex)
Returns the center of the section at \a itemIndex as an angle in
degrees.
*/
function sectionCenterAngle(itemIndex) {
return MathUtils.radToDegOffset(control.__protectedScope.sectionCenterAngle(itemIndex));
}
/*!
\qmlmethod real PieMenuStyle::sectionEndAngle(int itemIndex)
Returns the end of the section at \a itemIndex as an angle in degrees.
*/
function sectionEndAngle(itemIndex) {
return MathUtils.radToDegOffset(control.__protectedScope.sectionEndAngle(itemIndex));
}
/*!
\internal
The distance in pixels from the center of each menu item's icon to the
center of the menu. A higher value means that the icons will be further
from the center of the menu.
*/
readonly property real __iconOffset: cancelRadius + ((radius - cancelRadius) / 2)
/*! \internal */
readonly property real __selectableRadius: radius - cancelRadius
/*! \internal */
property int __implicitWidth: Math.round(TextSingleton.implicitHeight * 12.5)
/*! \internal */
property int __implicitHeight: __implicitWidth
/*!
The background of the menu.
By default, there is no background defined.
*/
property Component background
/*!
The cancel component of the menu.
This is an area in the center of the menu that closes the menu when
clicked.
By default, it is not visible.
*/
property Component cancel: null
/*!
The component that displays the text of the currently selected menu
item, or the title if there is no current item.
The current item's text is available via the \c styleData.text
property.
*/
property Component title: Text {
font.pointSize: 20
text: styleData.text
horizontalAlignment: Text.AlignHCenter
verticalAlignment: Text.AlignVCenter
color: "#ccc"
antialiasing: true
}
/*!
This component defines each section of the pie menu.
This component covers the width and height of the control.
No mouse events are propagated to this component, which means that
controls like Button will not function when used within it. You can
check if the mouse is over this section by comparing
\c control.currentIndex to \c styleData.index.
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 menu item.
\row \li \c {readonly property bool} \b styleData.hovered
\li \c true if this menu item is under the mouse.
\row \li \c {readonly property bool} \b styleData.pressed
\li \c true if the mouse is pressed down on this menu item.
\endtable
*/
property Component menuItem: Item {
id: actionRootDelegateItem
function drawRingSection(ctx, x, y, section, r, ringWidth, ringColor) {
ctx.fillStyle = ringColor;
// Draw one section.
ctx.beginPath();
ctx.moveTo(x,y);
// Canvas draws 0 degrees at 3 o'clock, whereas we want it to draw it at 12.
var start = control.__protectedScope.sectionStartAngle(section);
var end = control.__protectedScope.sectionEndAngle(section);
ctx.arc(x, y, r, start, end, start > end);
ctx.fill();
// Either change this to the background color, or use the global composition.
ctx.fillStyle = "black";
ctx.globalCompositeOperation = "destination-out";
ctx.beginPath();
ctx.moveTo(x, y);
ctx.arc(x, y, ringWidth, 0, Math.PI * 2);
ctx.closePath();
ctx.fill();
// If using the global composition method, make sure to change it back to default.
ctx.globalCompositeOperation = "source-over";
}
Canvas {
id: actionCanvas
anchors.fill: parent
property color currentColor: control.currentIndex === styleData.index ? selectionColor : backgroundColor
Connections {
target: pieMenuStyle
onStartAngleChanged: actionCanvas.requestPaint()
onEndAngleChanged: actionCanvas.requestPaint()
}
Connections {
target: control
onCurrentIndexChanged: actionCanvas.requestPaint()
}
onPaint: {
var ctx = getContext("2d");
ctx.reset();
drawRingSection(ctx, width / 2, height / 2, styleData.index, radius, cancelRadius, currentColor);
}
}
readonly property var __styleData: styleData
PieMenuIcon {
control: pieMenuStyle.control
styleData: __styleData
}
}
/*! \internal */
property Component panel: Item {
implicitWidth: __implicitWidth
implicitHeight: __implicitHeight
property alias titleItem: titleLoader.item
Item {
id: itemgroup
anchors.fill: parent
visible: false
Loader {
id: backgroundLoader
sourceComponent: background
anchors.fill: parent
}
Loader {
id: cancelLoader
sourceComponent: cancel
anchors.centerIn: parent
}
Repeater {
id: menuItemRepeater
model: control.__protectedScope.visibleItems
delegate: Loader {
id: menuItemLoader
anchors.fill: parent
sourceComponent: menuItem
readonly property int __index: index
property QtObject styleData: QtObject {
readonly property alias index: menuItemLoader.__index
readonly property bool hovered: control.currentIndex === index
readonly property bool pressed: control.__protectedScope.pressedIndex === index
}
}
}
}
DropShadow {
id: dropShadow
anchors.fill: itemgroup
spread: shadowSpread
samples: shadowRadius * 2 + 1
transparentBorder: true
color: shadowColor
source: itemgroup
}
Loader {
id: titleLoader
sourceComponent: title
x: parent.x + parent.width / 2 - width / 2
y: -height - 10
property QtObject styleData: QtObject {
property string text: control.currentIndex !== -1
? control.__protectedScope.visibleItems[control.currentIndex].text
: control.title
}
}
}
}
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