Meshroom/meshroom/ui/qml/GraphEditor/GraphEditor.qml
waaake bf857bc6e4 [ui] GraphEditor: Setting the drag.smoothed property of the MouseArea to false when the selection is started
Setting the drag.smoothed to false ensures that the target will be moved straight to the current mouse position
2025-01-15 16:20:38 +05:30

1251 lines
51 KiB
QML
Executable file

import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Controls 1.0
import MaterialIcons 2.2
import Utils 1.0
/**
* A component displaying a Graph (nodes, attributes and edges).
*/
Item {
id: root
property variant uigraph: null /// Meshroom UI graph (UIGraph)
readonly property variant graph: uigraph ? uigraph.graph : null /// Core graph contained in the UI graph
property variant nodeTypesModel: null /// The list of node types that can be instantiated
property real maxZoom: 2.0
property real minZoom: 0.1
property var edgeAboutToBeRemoved: undefined
property var _attributeToDelegate: ({})
// Signals
signal workspaceMoved()
signal workspaceClicked()
signal nodeDoubleClicked(var mouse, var node)
signal computeRequest(var nodes)
signal submitRequest(var nodes)
property int nbMeshroomScenes: 0
property int nbDraggedFiles: 0
signal filesDropped(var drop, var mousePosition) // Files have been dropped
// Trigger initial fit() after initialization
// (ensure GraphEditor has its final size)
Component.onCompleted: firstFitTimer.start()
Timer {
id: firstFitTimer
running: false
interval: 10
onTriggered: fit()
}
clip: true
SystemPalette { id: activePalette }
/// Get node delegate for the given node object
function nodeDelegate(node) {
for(var i = 0; i < nodeRepeater.count; ++i) {
if (nodeRepeater.itemAt(i).node === node)
return nodeRepeater.itemAt(i)
}
return undefined
}
/// Duplicate a node and optionally all the following ones
function duplicateNode(duplicateFollowingNodes) {
var nodes
if (duplicateFollowingNodes) {
nodes = uigraph.duplicateNodesFrom(uigraph.getSelectedNodes())
} else {
nodes = uigraph.duplicateNodes(uigraph.getSelectedNodes())
}
uigraph.selectedNode = nodes[0]
uigraph.selectNodes(nodes)
}
/// Copy node content to clipboard
function copyNodes() {
var nodeContent = uigraph.getSelectedNodesContent()
if (nodeContent !== '') {
Clipboard.clear()
Clipboard.setText(nodeContent)
}
}
/// Paste content of clipboard to graph editor and create new node if valid
function pasteNodes() {
var finalPosition = undefined
var centerPosition = false
if (mouseArea.containsMouse) {
if (uigraph.hoveredNode !== null) {
var node = nodeDelegate(uigraph.hoveredNode)
finalPosition = Qt.point(node.mousePosition.x + node.x, node.mousePosition.y + node.y)
} else {
finalPosition = mapToItem(draggable, mouseArea.mouseX, mouseArea.mouseY)
}
} else {
finalPosition = getCenterPosition()
centerPosition = true
}
var copiedContent = Clipboard.getText()
var nodes = uigraph.pasteNodes(copiedContent, finalPosition, centerPosition)
if (nodes.length > 0) {
uigraph.selectedNode = nodes[0]
uigraph.selectNodes(nodes)
}
}
/// Get the coordinates of the point at the center of the GraphEditor
function getCenterPosition() {
return mapToItem(draggable, mouseArea.width / 2, mouseArea.height / 2)
}
Keys.onPressed: function(event) {
if (event.key === Qt.Key_F) {
fit()
} else if (event.key === Qt.Key_Delete) {
if (event.modifiers === Qt.AltModifier) {
uigraph.removeNodesFrom(uigraph.getSelectedNodes())
} else {
uigraph.removeSelectedNodes()
}
} else if (event.key === Qt.Key_D) {
duplicateNode(event.modifiers === Qt.AltModifier)
} else if (event.key === Qt.Key_X && event.modifiers === Qt.ControlModifier) {
copyNodes()
uigraph.removeSelectedNodes()
} else if (event.key === Qt.Key_C) {
if (event.modifiers === Qt.ControlModifier) {
copyNodes()
}
else {
colorSelector.toggle()
}
} else if (event.key === Qt.Key_V && event.modifiers === Qt.ControlModifier) {
pasteNodes()
} else if (event.key === Qt.Key_Tab) {
event.accepted = true
if (mouseArea.containsMouse) {
newNodeMenu.spawnPosition = mouseArea.mapToItem(draggable, mouseArea.mouseX, mouseArea.mouseY)
newNodeMenu.popup()
}
}
}
MouseArea {
id: mouseArea
anchors.fill: parent
property double factor: 1.15
// Activate multisampling for edges antialiasing
layer.enabled: true
layer.samples: 8
hoverEnabled: true
acceptedButtons: Qt.LeftButton | Qt.RightButton | Qt.MiddleButton
drag.threshold: 0
drag.smoothed: false
cursorShape: drag.target == draggable ? Qt.ClosedHandCursor : Qt.ArrowCursor
onWheel: function(wheel) {
var zoomFactor = wheel.angleDelta.y > 0 ? factor : 1 / factor
var scale = draggable.scale * zoomFactor
scale = Math.min(Math.max(minZoom, scale), maxZoom)
if (draggable.scale == scale)
return
var point = mapToItem(draggable, wheel.x, wheel.y)
draggable.x += (1 - zoomFactor) * point.x * draggable.scale
draggable.y += (1 - zoomFactor) * point.y * draggable.scale
draggable.scale = scale
workspaceMoved()
}
onPressed: function(mouse) {
if (mouse.button != Qt.MiddleButton && mouse.modifiers == Qt.NoModifier) {
uigraph.clearNodeSelection()
}
if (mouse.button == Qt.LeftButton && (mouse.modifiers == Qt.NoModifier || mouse.modifiers & (Qt.ControlModifier | Qt.ShiftModifier))) {
nodeSelectionBox.startSelection(mouse);
}
if (mouse.button == Qt.MiddleButton || (mouse.button == Qt.LeftButton && mouse.modifiers & Qt.AltModifier)) {
drag.target = draggable // start drag
}
}
onReleased: {
nodeSelectionBox.endSelection();
drag.target = null;
root.forceActiveFocus()
workspaceClicked()
}
onPositionChanged: {
if (drag.active)
workspaceMoved()
}
onClicked: function(mouse) {
if (mouse.button == Qt.RightButton) {
// Store mouse click position in 'draggable' coordinates as new node spawn position
newNodeMenu.spawnPosition = mouseArea.mapToItem(draggable, mouse.x, mouse.y)
newNodeMenu.popup()
}
}
// Contextual Menu for creating new nodes
// TODO: add filtering + validate on 'Enter'
Menu {
id: newNodeMenu
property point spawnPosition
property variant menuKeys: Object.keys(root.nodeTypesModel).concat(Object.values(MeshroomApp.pipelineTemplateNames))
height: searchBar.height + nodeMenuRepeater.height + instantiator.height
function createNode(nodeType) {
// "nodeType" might be a pipeline (artificially added in the "Pipelines" category) instead of a node
// If it is not a pipeline to import, then it must be a node
if (!importPipeline(nodeType)) {
// Add node via the proper command in uigraph
var node = uigraph.addNewNode(nodeType, spawnPosition);
uigraph.selectedNode = node;
uigraph.selectNodes([node])
}
close()
}
function importPipeline(pipeline) {
if (MeshroomApp.pipelineTemplateNames.includes(pipeline)) {
var url = MeshroomApp.pipelineTemplateFiles[MeshroomApp.pipelineTemplateNames.indexOf(pipeline)]["path"]
var nodes = uigraph.importProject(Filepath.stringToUrl(url), spawnPosition)
uigraph.selectedNode = nodes[0]
uigraph.selectNodes(nodes)
return true
}
return false
}
function parseCategories() {
// Organize nodes based on their category
// {"category1": ["node1", "node2"], "category2": ["node3", "node4"]}
let categories = {};
for (const [name, data] of Object.entries(root.nodeTypesModel)) {
let category = data["category"];
if (categories[category] === undefined) {
categories[category] = []
}
categories[category].push(name)
}
// Add a "Pipelines" category, filled with the list of templates to create pipelines from the menu
categories["Pipelines"] = MeshroomApp.pipelineTemplateNames
return categories
}
onVisibleChanged: {
searchBar.clear()
if (visible) {
// When menu is shown, give focus to the TextField filter
searchBar.forceActiveFocus()
}
}
SearchBar {
id: searchBar
width: parent.width
}
// menuItemDelegate is wrapped in a component so it can be used in both the search bar and sub-menus
Component {
id: menuItemDelegateComponent
MenuItem {
id: menuItemDelegate
font.pointSize: 8
padding: 3
// Hide items that does not match the filter text
visible: modelData.toLowerCase().indexOf(searchBar.text.toLowerCase()) > -1
text: modelData
// Forward key events to the search bar to continue typing seamlessly
// even if this delegate took the activeFocus due to mouse hovering
Keys.forwardTo: [searchBar.textField]
Keys.onPressed: function(event) {
event.accepted = false;
switch (event.key) {
case Qt.Key_Return:
case Qt.Key_Enter:
// Create node on validation (Enter/Return keys)
newNodeMenu.createNode(modelData)
event.accepted = true
break
case Qt.Key_Up:
case Qt.Key_Down:
case Qt.Key_Left:
case Qt.Key_Right:
break // Ignore if arrow key was pressed to let the menu be controlled
default:
searchBar.forceActiveFocus()
}
}
// Set the priority ordering of the keys to be Item's own Key Handling > ForwardTo
Keys.priority: Keys.AfterItem;
// Create node on mouse click
onClicked: newNodeMenu.createNode(modelData)
states: [
State {
// Additional property setting when the MenuItem is not visible
when: !visible
name: "invisible"
PropertyChanges {
target: menuItemDelegate
height: 0 // Make sure the item is no visible by setting height to 0
focusPolicy: Qt.NoFocus // Don't grab focus when not visible
}
}
]
}
}
Repeater {
id: nodeMenuRepeater
model: searchBar.text !== "" ? Object.values(newNodeMenu.menuKeys) : undefined
// Create Menu items from available items
delegate: menuItemDelegateComponent
}
// Dynamically add the menu categories
Instantiator {
id: instantiator
model: (searchBar.text === "") ? Object.keys(newNodeMenu.parseCategories()).sort() : undefined
onObjectAdded: function(index, object) {
// Add sub-menu under the search bar
newNodeMenu.insertMenu(index + 1, object)
}
onObjectRemoved: function(index, object) {
newNodeMenu.removeMenu(object)
}
delegate: Menu {
title: modelData
id: newNodeSubMenu
Instantiator {
model: newNodeMenu.visible ? newNodeMenu.parseCategories()[modelData] : undefined
onObjectAdded: function(index, object) {
newNodeSubMenu.insertItem(index, object)
}
onObjectRemoved: function(index, object) {
newNodeSubMenu.removeItem(object)
}
delegate: menuItemDelegateComponent
}
}
}
}
// Informative contextual menu when graph is read-only
Menu {
id: lockedMenu
MenuItem {
id: item
font.pointSize: 8
enabled: false
text: "Computing - Graph is Locked!"
}
}
Item {
id: draggable
transformOrigin: Item.TopLeft
width: 1000
height: 1000
Popup {
id: edgeMenu
property var currentEdge: null
property bool forLoop: false
onOpened: {
expandButton.canExpand = uigraph.canExpandForLoop(edgeMenu.currentEdge)
}
contentItem: Row {
IntSelector {
id: loopIterationSelector
tooltipText: "Iterations"
visible: edgeMenu.currentEdge && edgeMenu.forLoop
enabled: expandButton.canExpand
property var listAttr: edgeMenu.currentEdge ? edgeMenu.currentEdge.src.root : null
Connections {
target: edgeMenu
function onCurrentEdgeChanged() {
if (edgeMenu.currentEdge) {
loopIterationSelector.listAttr = edgeMenu.currentEdge.src.root
loopIterationSelector.value = loopIterationSelector.listAttr ? loopIterationSelector.listAttr.value.indexOf(edgeMenu.currentEdge.src) + 1 : 0
}
}
}
// We add 1 to the index because of human readable index (starting at 1)
value: listAttr ? listAttr.value.indexOf(edgeMenu.currentEdge.src) + 1 : 0
range: { "min": 1, "max": listAttr ? listAttr.value.count : 0 }
onValueChanged: {
if (listAttr === null) {
return
}
const newSrcAttr = listAttr.value.at(value - 1)
const dst = edgeMenu.currentEdge.dst
// If the edge exists, do not replace it
if (newSrcAttr === edgeMenu.currentEdge.src && dst === edgeMenu.currentEdge.dst) {
return
}
edgeMenu.currentEdge = uigraph.replaceEdge(edgeMenu.currentEdge, newSrcAttr, dst)
}
}
MaterialToolButton {
font.pointSize: 13
ToolTip.text: "Remove Edge"
enabled: edgeMenu.currentEdge && !edgeMenu.currentEdge.dst.node.locked && !edgeMenu.currentEdge.dst.isReadOnly
text: MaterialIcons.delete_
onClicked: {
uigraph.removeEdge(edgeMenu.currentEdge)
edgeMenu.close()
}
}
MaterialToolButton {
id: expandButton
property bool canExpand: edgeMenu.currentEdge && edgeMenu.forLoop
visible: edgeMenu.currentEdge && edgeMenu.forLoop && canExpand
enabled: edgeMenu.currentEdge && !edgeMenu.currentEdge.dst.node.locked && !edgeMenu.currentEdge.dst.isReadOnly
font.pointSize: 13
ToolTip.text: "Expand"
text: MaterialIcons.open_in_full
onClicked: {
edgeMenu.currentEdge = uigraph.expandForLoop(edgeMenu.currentEdge)
canExpand = false
edgeMenu.close()
}
}
MaterialToolButton {
id: collapseButton
visible: edgeMenu.currentEdge && edgeMenu.forLoop && !expandButton.canExpand
enabled: edgeMenu.currentEdge && !edgeMenu.currentEdge.dst.node.locked && !edgeMenu.currentEdge.dst.isReadOnly
font.pointSize: 13
ToolTip.text: "Collapse"
text: MaterialIcons.close_fullscreen
onClicked: {
uigraph.collapseForLoop(edgeMenu.currentEdge)
expandButton.canExpand = true
edgeMenu.close()
}
}
}
}
// Edges
Repeater {
id: edgesRepeater
// Delay edges loading after nodes (edges needs attribute pins to be created)
model: nodeRepeater.loaded && root.graph ? root.graph.edges : undefined
delegate: Edge {
property var src: root._attributeToDelegate[edge.src]
property var dst: root._attributeToDelegate[edge.dst]
property bool isValidEdge: src !== undefined && dst !== undefined
visible: isValidEdge && src.visible && dst.visible
property bool forLoop: src.attribute.type === "ListAttribute" && dst.attribute.type != "ListAttribute"
property bool inFocus: containsMouse || (edgeMenu.opened && edgeMenu.currentEdge === edge)
edge: object
isForLoop: forLoop
loopSize: forLoop ? edge.src.root.value.count : 0
iteration: forLoop ? edge.src.root.value.indexOf(edge.src) : 0
color: edge.dst === root.edgeAboutToBeRemoved ? "red" : inFocus ? activePalette.highlight : activePalette.text
thickness: {
if (forLoop) {
return (inFocus) ? 4 : 3
}
return (inFocus) ? 2 : 1
}
point1x: isValidEdge ? src.globalX + src.outputAnchorPos.x : 0
point1y: isValidEdge ? src.globalY + src.outputAnchorPos.y : 0
point2x: isValidEdge ? dst.globalX + dst.inputAnchorPos.x : 0
point2y: isValidEdge ? dst.globalY + dst.inputAnchorPos.y : 0
onPressed: function(event) {
const canEdit = !edge.dst.node.locked
if (event.button) {
if (canEdit && (event.modifiers & Qt.AltModifier)) {
uigraph.removeEdge(edge)
} else {
edgeMenu.currentEdge = edge
edgeMenu.forLoop = forLoop
var spawnPosition = mouseArea.mapToItem(draggable, mouseArea.mouseX, mouseArea.mouseY)
edgeMenu.x = spawnPosition.x
edgeMenu.y = spawnPosition.y
edgeMenu.open()
}
}
}
Component.onDestruction: {
// Handles the case where the edge is destroyed while hidden because it is replaced: the pins should be re-enabled
if (!_window.isClosing) {
// When the window is closing, the QML context becomes invalid, which causes function calls to result in errors
if (src && src !== undefined)
src.updatePin(true, true) // isSrc = true, isVisible = true
if (dst && dst !== undefined)
dst.updatePin(false, true) // isSrc = false, isVisible = true
}
}
}
}
Loader {
id: nodeMenuLoader
property var currentNode: null
active: currentNode != null
sourceComponent: nodeMenuComponent
function load(node) {
currentNode = node;
}
function unload() {
currentNode = null;
}
function showDataDeletionDialog(deleteFollowing: bool, callback) {
uigraph.forceNodesStatusUpdate();
const dialog = deleteDataDialog.createObject(
root,
{
"node": currentNode,
"deleteFollowing": deleteFollowing
}
);
dialog.open();
if(callback)
dialog.dataDeleted.connect(callback);
}
}
Component {
id: nodeMenuComponent
Menu {
id: nodeMenu
property var currentNode: nodeMenuLoader.currentNode
// Cache computatibility/submitability status of each selected node.
readonly property var nodeSubmitOrComputeStatus: {
var collectedStatus = ({});
uigraph.nodeSelection.selectedIndexes.forEach(function(idx) {
const node = uigraph.graph.nodes.at(idx.row);
collectedStatus[node] = uigraph.graph.canSubmitOrCompute(node);
});
return collectedStatus;
}
readonly property bool isSelectionFullyComputed: {
return uigraph.nodeSelection.selectedIndexes.every(function(idx) {
return uigraph.graph.nodes.at(idx.row).isComputed;
});
}
readonly property bool isSelectionOnlyComputableNodes: {
return uigraph.nodeSelection.selectedIndexes.every(function(idx) {
const node = uigraph.graph.nodes.at(idx.row);
return (
node.isComputable
&& uigraph.graph.canComputeTopologically(node)
);
});
}
readonly property bool canSelectionBeComputed: {
if(!isSelectionOnlyComputableNodes)
return false;
if(isSelectionFullyComputed)
return true;
return uigraph.nodeSelection.selectedIndexes.every(function(idx) {
const node = uigraph.graph.nodes.at(idx.row);
return (
node.isComputed
// canCompute if canSubmitOrCompute == 1(can compute) or 3(can compute & submit)
|| nodeSubmitOrComputeStatus[node] % 2 == 1
);
});
}
readonly property bool isSelectionSubmittable: uigraph.canSubmit && isSelectionOnlyComputableNodes
readonly property bool canSelectionBeSubmitted: {
if(!isSelectionOnlyComputableNodes)
return false;
if(isSelectionFullyComputed)
return true;
return uigraph.nodeSelection.selectedIndexes.every(function(idx) {
const node = uigraph.graph.nodes.at(idx.row);
return (
node.isComputed
// canSubmit if canSubmitOrCompute == 2(can submit) or 3(can compute & submit)
|| nodeSubmitOrComputeStatus[node] > 1
)
});
}
width: 220
Component.onCompleted: popup()
onClosed: nodeMenuLoader.unload()
MenuItem {
id: computeMenuItem
text: nodeMenu.isSelectionFullyComputed ? "Recompute" : "Compute"
visible: nodeMenu.isSelectionOnlyComputableNodes
height: visible ? implicitHeight : 0
enabled: nodeMenu.canSelectionBeComputed
onTriggered: {
if (nodeMenu.isSelectionFullyComputed) {
nodeMenuLoader.showDataDeletionDialog(
false,
function(request, uigraph) {
request(uigraph.getSelectedNodes());
}.bind(null, computeRequest, uigraph)
);
} else {
computeRequest(uigraph.getSelectedNodes());
}
}
}
MenuItem {
id: submitMenuItem
text: nodeMenu.isSelectionFullyComputed ? "Re-Submit" : "Submit"
visible: nodeMenu.isSelectionSubmittable
height: visible ? implicitHeight : 0
enabled: nodeMenu.canSelectionBeSubmitted
onTriggered: {
if (nodeMenu.isSelectionFullyComputed) {
nodeMenuLoader.showDataDeletionDialog(
false,
function(request, uigraph) {
request(uigraph.getSelectedNodes());
}.bind(null, submitRequest, uigraph)
);
} else {
submitRequest(uigraph.getSelectedNodes());
}
}
}
MenuItem {
text: "Stop Computation"
enabled: nodeMenu.currentNode.canBeStopped()
visible: enabled
height: visible ? implicitHeight : 0
onTriggered: uigraph.stopNodeComputation(nodeMenu.currentNode)
}
MenuItem {
text: "Cancel Computation"
enabled: nodeMenu.currentNode.canBeCanceled()
visible: enabled
height: visible ? implicitHeight : 0
onTriggered: uigraph.cancelNodeComputation(nodeMenu.currentNode)
}
MenuItem {
text: "Open Folder"
visible: nodeMenu.currentNode.isComputable
height: visible ? implicitHeight : 0
onTriggered: Qt.openUrlExternally(Filepath.stringToUrl(nodeMenu.currentNode.internalFolder))
}
MenuSeparator {
visible: nodeMenu.currentNode.isComputable
}
MenuItem {
text: "Cut Node(s)"
enabled: true
ToolTip.text: "Copy selection to the clipboard and remove it"
ToolTip.visible: hovered
onTriggered: {
copyNodes()
uigraph.removeSelectedNodes()
}
}
MenuItem {
text: "Copy Node(s)"
enabled: true
ToolTip.text: "Copy selection to the clipboard"
ToolTip.visible: hovered
onTriggered: copyNodes()
}
MenuItem {
text: "Paste Node(s)"
enabled: true
ToolTip.text: "Copy selection to the clipboard and immediately paste it"
ToolTip.visible: hovered
onTriggered: {
copyNodes()
pasteNodes()
}
}
MenuItem {
text: "Duplicate Node(s)" + (duplicateFollowingButton.hovered ? " From Here" : "")
enabled: true
onTriggered: duplicateNode(false)
MaterialToolButton {
id: duplicateFollowingButton
height: parent.height
anchors {
right: parent.right
rightMargin: parent.padding
}
text: MaterialIcons.fast_forward
onClicked: {
duplicateNode(true)
nodeMenu.close()
}
}
}
MenuItem {
text: "Remove Node(s)" + (removeFollowingButton.hovered ? " From Here" : "")
enabled: !nodeMenu.currentNode.locked
onTriggered: uigraph.removeSelectedNodes()
MaterialToolButton {
id: removeFollowingButton
height: parent.height
anchors {
right: parent.right
rightMargin: parent.padding
}
text: MaterialIcons.fast_forward
onClicked: {
uigraph.removeNodesFrom(uigraph.getSelectedNodes())
nodeMenu.close()
}
}
}
MenuSeparator {
visible: nodeMenu.currentNode.isComputable
}
MenuItem {
id: deleteDataMenuItem
text: "Delete Data" + (deleteFollowingButton.hovered ? " From Here" : "" ) + "..."
visible: nodeMenu.currentNode.isComputable
height: visible ? implicitHeight : 0
enabled: {
if (!nodeMenu.currentNode)
return false
// Check if the current node is locked (needed because it does not belong to its own duplicates list)
if (nodeMenu.currentNode.locked)
return false
// Check if at least one of the duplicate nodes is locked
for (let i = 0; i < nodeMenu.currentNode.duplicates.count; ++i) {
if (nodeMenu.currentNode.duplicates.at(i).locked)
return false
}
return true
}
onTriggered: nodeMenuLoader.showDataDeletionDialog(false)
MaterialToolButton {
id: deleteFollowingButton
anchors {
right: parent.right
rightMargin: parent.padding
}
height: parent.height
text: MaterialIcons.fast_forward
onClicked: {
nodeMenuLoader.showDataDeletionDialog(true);
nodeMenu.close();
}
}
}
}
}
// Confirmation dialog for node cache deletion
Component {
id: deleteDataDialog
MessageDialog {
property var node
property bool deleteFollowing: false
signal dataDeleted()
focus: true
modal: false
header.visible: false
text: "Delete Data of '" + node.label + "'" + (uigraph.nodeSelection.selectedIndexes.length > 1 ? " and other selected Nodes" : "") + (deleteFollowing ? " and following Nodes?" : "?")
helperText: "Warning: This operation cannot be undone."
standardButtons: Dialog.Yes | Dialog.Cancel
onAccepted: {
if (deleteFollowing)
uigraph.clearDataFrom(uigraph.getSelectedNodes());
else
uigraph.clearSelectedNodesData();
dataDeleted();
}
onClosed: destroy()
}
}
// Nodes
Repeater {
id: nodeRepeater
model: root.graph ? root.graph.nodes : undefined
property bool loaded: model ? count === model.count : false
property bool ongoingDrag: false
property bool updateSelectionOnClick: false
property var temporaryEdgeAboutToBeRemoved: undefined
delegate: Node {
id: nodeDelegate
node: object
width: uigraph.layout.nodeWidth
mainSelected: uigraph.selectedNode === node
hovered: uigraph.hoveredNode === node
// ItemSelectionModel.hasSelection triggers updates anytime the selectionChanged() signal is emitted.
selected: uigraph.nodeSelection.hasSelection ? uigraph.nodeSelection.isRowSelected(index) : false
onAttributePinCreated: function(attribute, pin) { registerAttributePin(attribute, pin) }
onAttributePinDeleted: function(attribute, pin) { unregisterAttributePin(attribute, pin) }
onPressed: function(mouse) {
nodeRepeater.updateSelectionOnClick = true;
nodeRepeater.ongoingDrag = true;
let selectionMode = ItemSelectionModel.NoUpdate;
if(!selected) {
selectionMode = ItemSelectionModel.ClearAndSelect;
}
if (mouse.button === Qt.LeftButton) {
if(mouse.modifiers & Qt.ShiftModifier) {
selectionMode = ItemSelectionModel.Select;
}
if(mouse.modifiers & Qt.ControlModifier) {
selectionMode = ItemSelectionModel.Toggle;
}
if(mouse.modifiers & Qt.AltModifier) {
let selectFollowingMode = ItemSelectionModel.ClearAndSelect;
if(mouse.modifiers & Qt.ShiftModifier) {
selectFollowingMode = ItemSelectionModel.Select;
}
uigraph.selectFollowing(node, selectFollowingMode);
// Indicate selection has been dealt with by setting conservative Select mode.
selectionMode = ItemSelectionModel.Select;
}
}
else if (mouse.button === Qt.RightButton) {
if(selected) {
// Keep the full selection when right-clicking on an already selected node.
nodeRepeater.updateSelectionOnClick = false;
}
}
if(selectionMode != ItemSelectionModel.NoUpdate) {
nodeRepeater.updateSelectionOnClick = false;
uigraph.selectNodeByIndex(index, selectionMode);
}
// If the node is selected after this, make it the active selected node.
if(selected) {
uigraph.selectedNode = node;
}
// Open the node context menu once selection has been updated.
if(mouse.button == Qt.RightButton) {
nodeMenuLoader.load(node)
}
}
onReleased: function(mouse, wasDragged) {
nodeRepeater.ongoingDrag = false;
}
// Only called when the node has not been dragged.
onClicked: function(mouse) {
if(!nodeRepeater.updateSelectionOnClick) {
return;
}
uigraph.selectNodeByIndex(index);
}
onDoubleClicked: function(mouse) { root.nodeDoubleClicked(mouse, node) }
onEntered: uigraph.hoveredNode = node
onExited: uigraph.hoveredNode = null
onEdgeAboutToBeRemoved: function(input) {
/*
* Sometimes the signals are not in the right order because of weird Qt/QML update order
* (next DropArea entered signal before previous DropArea exited signal) so edgeAboutToBeRemoved
* must be set to undefined before it can be set to another attribute object.
*/
if (input === undefined) {
if (nodeRepeater.temporaryEdgeAboutToBeRemoved === undefined) {
root.edgeAboutToBeRemoved = input
} else {
root.edgeAboutToBeRemoved = nodeRepeater.temporaryEdgeAboutToBeRemoved
nodeRepeater.temporaryEdgeAboutToBeRemoved = undefined
}
} else {
if (root.edgeAboutToBeRemoved === undefined) {
root.edgeAboutToBeRemoved = input
} else {
nodeRepeater.temporaryEdgeAboutToBeRemoved = input
}
}
}
// Interactive dragging: move the visual delegates
onPositionChanged: {
if(!selected || !dragging) {
return;
}
// Compute offset between the delegate and the stored node position.
const offset = Qt.point(x - node.x, y - node.y);
uigraph.nodeSelection.selectedIndexes.forEach(function(idx) {
if(idx != index) {
const delegate = nodeRepeater.itemAt(idx.row);
delegate.x = delegate.node.x + offset.x;
delegate.y = delegate.node.y + offset.y;
}
});
}
// After drag: apply the final offset to all selected nodes
onMoved: function(position) {
const offset = Qt.point(position.x - node.x, position.y - node.y);
uigraph.moveSelectedNodesBy(offset);
}
Behavior on x {
enabled: !nodeRepeater.ongoingDrag
NumberAnimation { duration: 100 }
}
Behavior on y {
enabled: !nodeRepeater.ongoingDrag
NumberAnimation { duration: 100 }
}
}
}
}
DelegateSelectionBox {
id: nodeSelectionBox
mouseArea: mouseArea
modelInstantiator: nodeRepeater
container: draggable
onDelegateSelectionEnded: function(selectedIndices, modifiers) {
let selectionMode = ItemSelectionModel.ClearAndSelect;
if(modifiers & Qt.ShiftModifier) {
selectionMode = ItemSelectionModel.Select;
} else if(modifiers & Qt.ControlModifier) {
selectionMode = ItemSelectionModel.Deselect;
}
uigraph.selectNodesByIndices(selectedIndices, selectionMode);
}
}
DropArea {
id: dropArea
anchors.fill: parent
keys: ["text/uri-list"]
onEntered: {
nbMeshroomScenes = 0
nbDraggedFiles = drag.urls.length
drag.urls.forEach(function(file) {
if (file.endsWith(".mg")) {
nbMeshroomScenes++
}
})
}
onDropped: function(drop) {
if (nbMeshroomScenes == nbDraggedFiles || nbMeshroomScenes == 0) {
// Retrieve mouse position and convert coordinate system
// from pixel values to graph reference system
var mousePosition = mapToItem(draggable, drag.x, drag.y)
// Send the list of files,
// to create the corresponding nodes or open another scene
filesDropped(drop, mousePosition)
} else {
errorDialog.open()
}
}
}
}
MessageDialog {
id: errorDialog
icon.text: MaterialIcons.error
icon.color: "#F44336"
title: "Different File Types"
text: "Do not mix .mg files and other types of files."
standardButtons: Dialog.Ok
parent: Overlay.overlay
onAccepted: close()
}
// Toolbar
FloatingPane {
padding: 2
anchors.bottom: parent.bottom
RowLayout {
id: navigation
spacing: 4
// Default index for search
property int currentIndex: -1
// Fit
MaterialToolButton {
text: MaterialIcons.fullscreen
ToolTip.text: "Fit"
onClicked: root.fit()
}
// Auto-Layout
MaterialToolButton {
text: MaterialIcons.linear_scale
ToolTip.text: "Auto-Layout"
onClicked: uigraph.layout.reset()
}
// Separator
Rectangle {
Layout.fillHeight: true
Layout.margins: 2
implicitWidth: 1
color: activePalette.window
}
// Settings
MaterialToolButton {
text: MaterialIcons.settings
font.pointSize: 11
onClicked: menu.open()
Menu {
id: menu
y: -height
padding: 4
RowLayout {
spacing: 2
Label {
padding: 2
text: "Auto-Layout Depth:"
}
ComboBox {
flat: true
model: ['Minimum', 'Maximum']
implicitWidth: 85
currentIndex: uigraph ? uigraph.layout.depthMode : -1
onActivated: {
uigraph.layout.depthMode = currentIndex
}
}
}
}
}
// Separator
Rectangle {
Layout.fillHeight: true
Layout.margins: 2
implicitWidth: 1
color: activePalette.window
}
ColorSelector {
id: colorSelector
Layout.minimumWidth: colorSelector.width
// When a Color is selected
onColorSelected: (color)=> {
uigraph.setSelectedNodesColor(color)
}
}
// Separator
Rectangle {
Layout.fillHeight: true
Layout.margins: 2
implicitWidth: 1
color: activePalette.window
}
// Search nodes in the graph
SearchBar {
id: graphSearchBar
toggle: true // enable toggling the actual text field by the search button
Layout.minimumWidth: graphSearchBar.width
maxWidth: 150
textField.background.opacity: 0.5
textField.onTextChanged: navigation.currentIndex = -1
onAccepted: {
navigation.navigateForward()
}
}
MaterialToolButton {
text: MaterialIcons.arrow_left
padding: 0
visible: graphSearchBar.text !== ""
onClicked: navigation.navigateBackward()
}
MaterialToolButton {
id: nextArrow
text: MaterialIcons.arrow_right
padding: 0
visible: graphSearchBar.text !== ""
onClicked: navigation.navigateForward()
}
Label {
id: currentSearchLabel
text: " " + (navigation.currentIndex + 1) + "/" + filteredNodes.count
padding: 0
visible: graphSearchBar.text !== ""
}
Repeater {
id: filteredNodes
model: SortFilterDelegateModel {
model: root.graph ? root.graph.nodes : undefined
sortRole: "label"
filters: [{role: "label", value: graphSearchBar.text}]
delegate: Item {
visible: false // Hide the items to not affect the layout as the nodes model gets changes
property var index_: index
}
function modelData(item, roleName_) {
return item.model.object[roleName_]
}
}
}
function navigateForward() {
/**
* Moves the navigation index forwards and focuses on the next node as per index.
*/
if (!filteredNodes.count)
return
navigation.currentIndex++
if (navigation.currentIndex === filteredNodes.count)
navigation.currentIndex = 0
navigation.nextItem()
}
function navigateBackward() {
/**
* Moves the navigation index backwards and focuses on the previous node as per index.
*/
if (!filteredNodes.count)
return
navigation.currentIndex--
if (navigation.currentIndex === -1)
navigation.currentIndex = filteredNodes.count - 1
navigation.nextItem()
}
function nextItem() {
// Compute bounding box
var node = nodeRepeater.itemAt(filteredNodes.itemAt(navigation.currentIndex).index_)
var bbox = Qt.rect(node.x, node.y, node.width, node.height)
// Rescale to fit the bounding box in the view, zoom is limited to prevent huge text
draggable.scale = Math.min(Math.min(root.width / bbox.width, root.height / bbox.height),maxZoom)
// Recenter
draggable.x = bbox.x*draggable.scale * -1 + (root.width - bbox.width * draggable.scale) * 0.5
draggable.y = bbox.y*draggable.scale * -1 + (root.height - bbox.height * draggable.scale) * 0.5
}
}
}
function registerAttributePin(attribute, pin) {
root._attributeToDelegate[attribute] = pin
}
function unregisterAttributePin(attribute, pin) {
delete root._attributeToDelegate[attribute]
}
function boundingBox() {
var first = nodeRepeater.itemAt(0)
if (first === null) {
return Qt.rect(0, 0, 0, 0)
}
var bbox = Qt.rect(first.x, first.y, first.x + first.width, first.y + first.height)
for (var i = 0; i < root.graph.nodes.count; ++i) {
var item = nodeRepeater.itemAt(i)
bbox.x = Math.min(bbox.x, item.x)
bbox.y = Math.min(bbox.y, item.y)
bbox.width = Math.max(bbox.width, item.x + item.width)
bbox.height = Math.max(bbox.height, item.y + item.height)
}
bbox.width -= bbox.x
bbox.height -= bbox.y
return bbox;
}
// Fit graph to fill root
function fit() {
// Compute bounding box
var bbox = boundingBox()
// Rescale to fit the bounding box in the view, zoom is limited to prevent huge text
draggable.scale = Math.min(Math.min(root.width / bbox.width, root.height / bbox.height), maxZoom)
// Recenter
draggable.x = bbox.x * draggable.scale * -1 + (root.width - bbox.width * draggable.scale) * 0.5
draggable.y = bbox.y * draggable.scale * -1 + (root.height - bbox.height * draggable.scale) * 0.5
}
}