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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0 WITH Qt-GPL-exception-1.0
import QtQuick 2.15
import HelperWidgets 2.0
import StudioTheme 1.0 as StudioTheme
Item {
id: root
width: 300
height: StudioTheme.Values.colorEditorPopupLineHeight
property color currentColor
property GradientModel model
property GradientModel gradientModel: root.model
property bool hasGradient: root.model.hasGradient
signal selectedNodeChanged
signal invalidated
onHasGradientChanged: {
colorLine.invalidate()
}
onCurrentColorChanged: {
root.gradientModel.setColor(colorLine.selectedIndex, root.currentColor)
colorLine.invalidate()
}
function addGradient() {
root.gradientModel.addGradient()
colorLine.invalidate()
colorLine.select(0)
}
function deleteGradient() {
root.gradientModel.deleteGradient()
}
function setPresetByID(presetID) {
root.gradientModel.setPresetByID(presetID)
colorLine.invalidate()
colorLine.select(0)
}
function setPresetByStops(stopsPositions, stopsColors, stopsCount) {
root.gradientModel.setPresetByStops(stopsPositions, stopsColors, stopsCount)
colorLine.invalidate()
colorLine.select(0)
}
function savePreset() {
root.gradientModel.savePreset()
}
function updateGradient() {
root.gradientModel.updateGradient()
}
Connections {
target: modelNodeBackend
function onSelectionChanged() {
colorLine.invalidate()
colorLine.select(0)
}
}
Item {
id: colorLine
height: 80
width: parent.width
property int effectiveWidth: colorLine.width - 10
property int selectedIndex: 0
function select(index) {
for (var i = 0; i < repeater.model.count; i++)
repeater.itemAt(i).item.highlighted = false
if (repeater.model.count < index + 1)
return
repeater.itemAt(index).item.highlighted = true
colorLine.selectedIndex = index
root.gradientModel.lock()
root.currentColor = repeater.itemAt(index).item.color
root.gradientModel.unlock()
root.selectedNodeChanged()
}
function invalidate() {
var gradientString = "import QtQuick 2.15; Gradient { orientation: Gradient.Horizontal;"
for (var i = 0; i < root.gradientModel.count; i++) {
gradientString += "GradientStop {}"
}
gradientString += "}"
var gradientObject = Qt.createQmlObject(gradientString, gradientRectangle, "test")
for (i = 0; i < root.gradientModel.count; i++) {
if (repeater.itemAt(i) !== null)
repeater.itemAt(i).item.y = 20 // fixes corner case for dragging overlapped items
gradientObject.stops[i].color = root.gradientModel.getColor(i)
gradientObject.stops[i].position = root.gradientModel.getPosition(i)
}
gradientRectangle.gradient = gradientObject
root.invalidated()
}
Column {
anchors.fill: parent
MouseArea {
height: 40
anchors.left: parent.left
anchors.right: parent.right
cursorShape: Qt.PointingHandCursor
onClicked: {
var currentPosition = mouseX / colorLine.effectiveWidth
var newIndex = root.gradientModel.addStop(currentPosition, root.currentColor)
if (newIndex > 0)
colorLine.select(newIndex)
colorLine.invalidate()
}
Item {
id: stack
anchors.fill: parent
}
Repeater {
id: repeater
model: root.gradientModel
delegate: Loader {
id: loader
sourceComponent: component
Binding {
target: loader.item
property: "color"
value: color
}
Binding {
target: loader.item
property: "x"
value: position === undefined ? 0 : colorLine.effectiveWidth * position
}
Binding {
target: loader.item
property: "index"
value: index
}
Binding {
target: loader.item
property: "readOnly"
value: readOnly !== undefined ? readOnly : false
}
}
}
}
Component.onCompleted: {
colorLine.select(0)
colorLine.invalidate()
}
Item {
height: 16
anchors.left: parent.left
anchors.right: parent.right
Image {
id: checkerboard
anchors.fill: parent
source: "images/checkers.png"
fillMode: Image.Tile
}
Rectangle {
id: gradientRectangle
anchors.fill: parent
border.color: StudioTheme.Values.themeControlOutline
border.width: StudioTheme.Values.border
gradient: Gradient {
id: gradient
}
}
}
}
}
Tooltip {
id: myTooltip
}
Component {
id: component
Item {
id: gradientStopHandle
property alias color: rectangle.color
property alias highlighted: canvas.highlighted
property bool toolTipVisible: false
property bool readOnly: false
property int index: 0
y: 20
width: 10
height: 20
opacity: y < 20 ? y / 10 : 1
function refreshToolTip(showToolTip) {
gradientStopHandle.toolTipVisible = showToolTip
if (showToolTip) {
var currentPoint = Qt.point(gradientStopHandleMouseArea.mouseX,
gradientStopHandleMouseArea.mouseY)
var fixedGradiantStopPosition = currentGradiantStopPosition()
myTooltip.showText(gradientStopHandleMouseArea,
currentPoint,
fixedGradiantStopPosition.toFixed(3))
} else {
myTooltip.hideText()
}
}
function currentGradiantStopPosition() {
return gradientStopHandle.x / colorLine.effectiveWidth;
}
onXChanged: gradientStopHandle.refreshToolTip(gradientStopHandle.toolTipVisible)
Image {
width: 10
height: 10
source: "images/checkers.png"
fillMode: Image.Tile
}
Rectangle {
id: rectangle
width: 10
height: 10
color: "red"
border.color: "gray"
border.width: 1
}
Canvas {
id: canvas
width: 10
height: 10
y: 10
antialiasing: true
property bool highlighted: false
property color strokeStyle: Qt.darker(fillStyle, 1.6)
property color fillStyle: highlighted ? "lightGray" : "gray"
onHighlightedChanged: requestPaint()
onPaint: {
var ctx = canvas.getContext('2d')
ctx.save()
ctx.strokeStyle = canvas.strokeStyle
ctx.lineWidth = 1
ctx.fillStyle = canvas.fillStyle
var size = 10
var yOffset = 2
ctx.beginPath()
ctx.moveTo(0, yOffset)
ctx.lineTo(size, yOffset)
ctx.lineTo(size / 2, 5 + yOffset)
ctx.closePath()
ctx.fill()
ctx.stroke()
ctx.restore()
}
}
Behavior on y {
PropertyAnimation {
duration: 100
}
}
Behavior on opacity {
PropertyAnimation {
duration: 100
}
}
MouseArea {
id: gradientStopHandleMouseArea
anchors.fill: parent
drag.target: parent
drag.minimumX: 0
drag.maximumX: colorLine.effectiveWidth
drag.minimumY: !gradientStopHandle.readOnly ? 0 : 20
drag.maximumY: 20
cursorShape: Qt.PointingHandCursor
hoverEnabled: true
// using pressed property instead of drag.active which was not working
onExited: gradientStopHandle.refreshToolTip(pressed)
onCanceled: gradientStopHandle.refreshToolTip(pressed)
Timer {
interval: 1000
running: gradientStopHandleMouseArea.containsMouse
onTriggered: gradientStopHandle.refreshToolTip(true)
}
onPressed: {
colorLine.select(index)
gradientStopHandle.refreshToolTip(true)
}
onReleased: {
if (drag.active) {
root.gradientModel.setPosition(colorLine.selectedIndex,
gradientStopHandle.currentGradiantStopPosition())
gradientStopHandle.refreshToolTip(false)
if (parent.y < 10) {
if (!gradientStopHandle.readOnly) {
colorLine.select(index - 1)
root.gradientModel.removeStop(index)
}
}
parent.y = 20
colorLine.invalidate()
colorLine.select(colorLine.selectedIndex)
}
}
}
}
}
}
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