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// Copyright (c) 2018 Ultimaker B.V.
// Cura is released under the terms of the LGPLv3 or higher.
import QtQuick 2.7
import QtQuick.Controls 2.3
import UM 1.5 as UM
import Cura 1.0 as Cura
// The expandable component has 2 major sub components:
// * The headerItem; Always visible and should hold some info about what happens if the component is expanded
// * The contentItem; The content that needs to be shown if the component is expanded.
Item
{
id: base
// Enumeration with the different possible alignments of the content with respect of the headerItem
enum ContentAlignment
{
AlignLeft,
AlignRight
}
// The headerItem holds the QML item that is always displayed.
property alias headerItem: headerItemLoader.sourceComponent
// The contentItem holds the QML item that is shown when the "open" button is pressed
property alias contentItem: content.contentItem
property color contentBackgroundColor: UM.Theme.getColor("action_button")
property color headerBackgroundColor: UM.Theme.getColor("action_button")
property color headerActiveColor: UM.Theme.getColor("expandable_active")
property color headerHoverColor: UM.Theme.getColor("expandable_hover")
property alias mouseArea: headerMouseArea
property alias enabled: headerMouseArea.enabled
// Text to show when this component is disabled
property alias disabledText: disabledLabel.text
// Defines the alignment of the content with respect of the headerItem, by default to the right
property int contentAlignment: ExpandablePopup.ContentAlignment.AlignRight
// How much spacing is needed around the contentItem
property alias contentPadding: content.padding
// How much padding is needed around the header & button
property alias headerPadding: background.padding
property alias headerBackgroundBorder: background.border
// Whether or not to show the background border
property bool enableHeaderBackgroundBorder: true
// What icon should be displayed on the right.
property alias iconSource: collapseButton.source
property alias iconColor: collapseButton.color
// The icon size (it's always drawn as a square)
property alias iconSize: collapseButton.height
// Is the "drawer" open?
readonly property alias expanded: content.visible
property alias expandedHighlightColor: expandedHighlight.color
// What should the radius of the header be. This is also influenced by the headerCornerSide
property alias headerRadius: background.radius
// On what side should the header corners be shown? 1 is down, 2 is left, 3 is up and 4 is right.
property alias headerCornerSide: background.cornerSide
// Change the contentItem close behaviour
property alias contentClosePolicy : content.closePolicy
// Distance between the header and the content.
property int popupOffset: 2 * UM.Theme.getSize("default_lining").height
onEnabledChanged:
{
if (!base.enabled && expanded)
{
toggleContent()
}
}
function toggleContent()
{
if (content.visible)
{
content.close()
}
else
{
content.open()
}
}
// Add this binding since the background color is not updated otherwise
Binding
{
target: background
property: "color"
value: base.enabled ? headerBackgroundColor : UM.Theme.getColor("disabled")
}
implicitHeight: 100 * screenScaleFactor
implicitWidth: 400 * screenScaleFactor
RoundedRectangle
{
id: background
property real padding: UM.Theme.getSize("default_margin").width
border.width: base.enableHeaderBackgroundBorder ? UM.Theme.getSize("default_lining").width : 0
border.color: UM.Theme.getColor("lining")
color: base.enabled ? headerBackgroundColor : UM.Theme.getColor("disabled")
anchors.fill: parent
UM.Label
{
id: disabledLabel
visible: !base.enabled
leftPadding: background.padding
text: ""
height: parent.height
}
Item
{
anchors.fill: parent
visible: base.enabled
MouseArea
{
id: headerMouseArea
anchors.fill: parent
onClicked: toggleContent()
hoverEnabled: true
onEntered: background.color = headerHoverColor
onExited: background.color = base.enabled ? headerBackgroundColor : UM.Theme.getColor("disabled")
}
Loader
{
id: headerItemLoader
anchors
{
left: parent.left
right: collapseButton.visible ? collapseButton.left : parent.right
top: parent.top
bottom: parent.bottom
margins: background.padding
}
}
// A highlight that is shown when the content is expanded
Rectangle
{
id: expandedHighlight
width: parent.width
height: UM.Theme.getSize("thick_lining").height
color: UM.Theme.getColor("primary")
visible: expanded
anchors.bottom: parent.bottom
}
UM.RecolorImage
{
id: collapseButton
anchors
{
right: parent.right
verticalCenter: parent.verticalCenter
margins: background.padding
}
source: UM.Theme.getIcon("ChevronSingleDown")
visible: source != ""
width: UM.Theme.getSize("standard_arrow").width
height: UM.Theme.getSize("standard_arrow").height
color: UM.Theme.getColor("small_button_text")
}
}
}
Popup
{
id: content
// Ensure that the content is located directly below the headerItem
y: background.height + base.popupOffset
// Make the content aligned with the rest, using the property contentAlignment to decide whether is right or left.
// In case of right alignment, the 3x padding is due to left, right and padding between the button & text.
x: contentAlignment == ExpandablePopup.ContentAlignment.AlignRight ? -width + collapseButton.width + headerItemLoader.width + 3 * background.padding : 0
padding: UM.Theme.getSize("default_margin").width
closePolicy: Popup.CloseOnPressOutsideParent
background: Cura.RoundedRectangle
{
cornerSide: Cura.RoundedRectangle.Direction.Down
color: contentBackgroundColor
border.width: UM.Theme.getSize("default_lining").width
border.color: UM.Theme.getColor("lining")
radius: UM.Theme.getSize("default_radius").width
height: contentItem.implicitHeight || content.height
}
contentItem: Item {}
onContentItemChanged:
{
// Since we want the size of the content to be set by the size of the content,
// we need to do it like this.
content.width = contentItem.width + 2 * content.padding
content.height = contentItem.height + 2 * content.padding
}
}
// DO NOT MOVE UP IN THE CODE: This connection has to be here, after the definition of the content item.
// Apparently the order in which these are handled matters and so the height is correctly updated if this is here.
Connections
{
// Since it could be that the content is dynamically populated, we should also take these changes into account.
target: content.contentItem
function onWidthChanged() { content.width = content.contentItem.width + 2 * content.padding }
function onHeightChanged() { content.height = content.contentItem.height + 2 * content.padding }
}
}
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