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Merge pull request #55 from pbrown12303/diagramwidget
DiagramWidget
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@@ -41,3 +41,4 @@ Session.vim | |
| tags | ||
| # Persistent undo | ||
| [._]*.un~ | ||
| *.exe | ||
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| Diagram Widget: Charles Daniels and Paul C. Brown |
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| package main | ||
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| import ( | ||
| "fmt" | ||
| "image/color" | ||
| "time" | ||
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| "fyne.io/x/fyne/widget/diagramwidget" | ||
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| "fyne.io/fyne/v2" | ||
| "fyne.io/fyne/v2/app" | ||
| "fyne.io/fyne/v2/container" | ||
| "fyne.io/fyne/v2/widget" | ||
| ) | ||
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| var forceticks int = 0 | ||
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| func forceanim(diagramWidget *diagramwidget.DiagramWidget) { | ||
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| for { | ||
| if forceticks > 0 { | ||
| diagramwidget.StepForceLayout(diagramWidget, 300) | ||
| diagramWidget.Refresh() | ||
| forceticks-- | ||
| fmt.Printf("forceticks=%d\n", forceticks) | ||
| } | ||
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| time.Sleep(time.Millisecond * (1000 / 30)) | ||
| } | ||
| } | ||
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| func main() { | ||
| app := app.New() | ||
| w := app.NewWindow("Diagram Demo") | ||
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| w.SetMaster() | ||
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| diagramWidget := diagramwidget.NewDiagramWidget("Diagram1") | ||
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| scrollContainer := container.NewScroll(diagramWidget) | ||
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| go forceanim(diagramWidget) | ||
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| // Node 0 | ||
| node0Label := widget.NewLabel("Node0") | ||
| node0 := diagramwidget.NewDiagramNode(diagramWidget, node0Label, "Node0") | ||
| node0.Move(fyne.NewPos(300, 0)) | ||
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| // Node 1 | ||
| node1Button := widget.NewButton("Node1 Button", func() { fmt.Printf("tapped Node1!\n") }) | ||
| node1 := diagramwidget.NewDiagramNode(diagramWidget, node1Button, "Node1") | ||
| node1.Move(fyne.Position{X: 100, Y: 100}) | ||
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| // Node 2 | ||
| node2 := diagramwidget.NewDiagramNode(diagramWidget, nil, "Node2") | ||
| node2Container := container.NewVBox( | ||
| widget.NewLabel("Node2 - with structure"), | ||
| widget.NewButton("Up", func() { | ||
| node2.GetDiagram().DisplaceNode(node2, fyne.Position{X: 0, Y: -10}) | ||
| node2.Refresh() | ||
| }), | ||
| widget.NewButton("Down", func() { | ||
| node2.GetDiagram().DisplaceNode(node2, fyne.Position{X: 0, Y: 10}) | ||
| node2.Refresh() | ||
| }), | ||
| container.NewHBox( | ||
| widget.NewButton("Left", func() { | ||
| node2.GetDiagram().DisplaceNode(node2, fyne.Position{X: -10, Y: 0}) | ||
| node2.Refresh() | ||
| }), | ||
| widget.NewButton("Right", func() { | ||
| node2.GetDiagram().DisplaceNode(node2, fyne.Position{X: 10, Y: 0}) | ||
| node2.Refresh() | ||
| }), | ||
| ), | ||
| ) | ||
| node2.SetInnerObject(node2Container) | ||
| node2.Move(fyne.Position{X: 100, Y: 300}) | ||
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| // Node 3 | ||
| node3 := diagramwidget.NewDiagramNode(diagramWidget, widget.NewButton("Node3: Force layout step", func() { | ||
| diagramwidget.StepForceLayout(diagramWidget, 300) | ||
| diagramWidget.Refresh() | ||
| }), "Node3") | ||
| node3.Move(fyne.Position{X: 400, Y: 100}) | ||
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| // Node 4 | ||
| node4 := diagramwidget.NewDiagramNode(diagramWidget, widget.NewButton("Node4: auto layout", func() { | ||
| forceticks += 100 | ||
| diagramWidget.Refresh() | ||
| }), "Node4") | ||
| node4.Move(fyne.Position{X: 400, Y: 400}) | ||
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| node5 := diagramwidget.NewDiagramNode(diagramWidget, widget.NewLabel("Node5"), "Node5") | ||
| node5.Move(fyne.NewPos(600, 200)) | ||
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| // Link0 | ||
| link0 := diagramwidget.NewDiagramLink(diagramWidget, "Link0") | ||
| link0.SetSourcePad(node0.GetEdgePad()) | ||
| link0.SetTargetPad(node1.GetEdgePad()) | ||
| link0.AddSourceAnchoredText("sourceRole", "sourceRole") | ||
| link0.AddMidpointAnchoredText("linkName", "Link 0") | ||
| solidDiamond := createDiamondDecoration() | ||
| solidDiamond.SetSolid(true) | ||
| link0.AddSourceDecoration(solidDiamond) | ||
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| // Link1 | ||
| link1 := diagramwidget.NewDiagramLink(diagramWidget, "Link1") | ||
| link1.SetSourcePad(node2.GetEdgePad()) | ||
| link1.SetTargetPad(node1.GetEdgePad()) | ||
| link1.SetForegroundColor(color.RGBA{255, 64, 64, 255}) | ||
| link1.AddTargetDecoration(diagramwidget.NewArrowhead()) | ||
| link1.AddTargetDecoration(diagramwidget.NewArrowhead()) | ||
| link1.AddMidpointDecoration(diagramwidget.NewArrowhead()) | ||
| link1.AddMidpointDecoration(diagramwidget.NewArrowhead()) | ||
| link1.AddMidpointAnchoredText("linkName", "Link 1") | ||
| link1.AddSourceDecoration(diagramwidget.NewArrowhead()) | ||
| link1.AddSourceDecoration(diagramwidget.NewArrowhead()) | ||
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| // Link2 | ||
| link2 := diagramwidget.NewDiagramLink(diagramWidget, "Link2") | ||
| link2.SetSourcePad(node0.GetEdgePad()) | ||
| link2.SetTargetPad(node3.GetEdgePad()) | ||
| link2.AddMidpointAnchoredText("linkName", "Link 2") | ||
| link2.AddSourceDecoration(createHalfArrowDecoration()) | ||
|
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| // Link3 | ||
| link3 := diagramwidget.NewDiagramLink(diagramWidget, "Link3") | ||
| link3.SetSourcePad(node2.GetEdgePad()) | ||
| link3.SetTargetPad(node3.GetEdgePad()) | ||
| link3.AddSourceAnchoredText("sourceRole", "sourceRole") | ||
| link3.AddMidpointAnchoredText("linkName", "Link 3") | ||
| link3.AddTargetAnchoredText("targetRole", "targetRole") | ||
| link3.AddMidpointDecoration(createTriangleDecoration()) | ||
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| // Link4 | ||
| link4 := diagramwidget.NewDiagramLink(diagramWidget, "Link4") | ||
| link4.SetSourcePad(node4.GetEdgePad()) | ||
| link4.SetTargetPad(node3.GetEdgePad()) | ||
| link4.AddMidpointAnchoredText("linkName", "Link 4") | ||
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| // Link5 | ||
| link5 := diagramwidget.NewDiagramLink(diagramWidget, "Link5") | ||
| link5.SetSourcePad(link4.GetMidPad()) | ||
| link5.SetTargetPad(node5.GetEdgePad()) | ||
| link5.AddMidpointAnchoredText("linkName", "Link 5") | ||
| link5.AddTargetDecoration(diagramwidget.NewArrowhead()) | ||
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| w.SetContent(scrollContainer) | ||
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| w.Resize(fyne.NewSize(600, 400)) | ||
| w.ShowAndRun() | ||
| } | ||
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| func createTriangleDecoration() diagramwidget.Decoration { | ||
| points := []fyne.Position{ | ||
| {X: 0, Y: 15}, | ||
| {X: 15, Y: 0}, | ||
| {X: 0, Y: -15}, | ||
| } | ||
| polygon := diagramwidget.NewPolygon(points) | ||
| return polygon | ||
| } | ||
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| func createDiamondDecoration() diagramwidget.Decoration { | ||
| points := []fyne.Position{ | ||
| {X: 0, Y: 0}, | ||
| {X: 8, Y: 4}, | ||
| {X: 16, Y: 0}, | ||
| {X: 8, Y: -4}, | ||
| } | ||
| polygon := diagramwidget.NewPolygon(points) | ||
| return polygon | ||
| } | ||
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| func createHalfArrowDecoration() diagramwidget.Decoration { | ||
| points := []fyne.Position{ | ||
| {X: 0, Y: 0}, | ||
| {X: 16, Y: 8}, | ||
| {X: 16, Y: 0}, | ||
| } | ||
| polygon := diagramwidget.NewPolygon(points) | ||
| return polygon | ||
| } |
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