Ast Refactoring
This commit is contained in:
Michael Schimmel
@@ -12,8 +12,7 @@ uses
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FMX.Controls,
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FMX.Objects,
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FMX.Graphics,
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Myc.Ast.Nodes,
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DraggablePanel;
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Myc.Ast.Nodes;
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type
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TPinConnection = record
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@@ -28,7 +27,135 @@ type
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// New enum to select the visualization style.
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TVisualizationMode = (vmDetailed, vmControlFlow);
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TAuraWorkspace = class;
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// A movable panel with a custom-painted border and title.
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TAuraNode = class(TStyledControl)
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private
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// Flag to indicate if the control is currently being dragged.
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FIsDragging: Boolean;
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// Stores the mouse coordinates at the beginning of the drag operation.
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FDownPos: TPointF;
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// Properties for the custom-drawn border.
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FBorderColor: TAlphaColor;
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FBorderWidth: Single;
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FBorderRadius: Single;
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// Properties for the title
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FTitle: string;
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FTitleFont: TFont;
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FTitleFontColor: TAlphaColor;
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// If true, the node is drawn without a border and with a transparent background.
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FFrameless: Boolean;
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procedure SetBorderColor(const Value: TAlphaColor);
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procedure SetBorderWidth(const Value: Single);
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procedure SetBorderRadius(const Value: Single);
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procedure SetTitle(const Value: string);
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procedure SetTitleFont(const Value: TFont);
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procedure SetTitleFontColor(const Value: TAlphaColor);
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procedure TitleFontChanged(Sender: TObject);
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procedure SetFrameless(const Value: Boolean);
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protected
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procedure Paint; override;
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procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Single); override;
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procedure MouseMove(Shift: TShiftState; X, Y: Single); override;
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procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Single); override;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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published
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// Custom border properties
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property BorderColor: TAlphaColor read FBorderColor write SetBorderColor;
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property BorderWidth: Single read FBorderWidth write SetBorderWidth;
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property BorderRadius: Single read FBorderRadius write SetBorderRadius;
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// Title properties
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property Title: string read FTitle write SetTitle;
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property TitleFont: TFont read FTitleFont write SetTitleFont;
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property TitleFontColor: TAlphaColor read FTitleFontColor write SetTitleFontColor;
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// Behavior properties
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property Frameless: Boolean read FFrameless write SetFrameless;
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// Standard control properties
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property Align;
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property Anchors;
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property ClipChildren default True;
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property Cursor default crDefault;
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property DragMode default TDragMode.dmManual;
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property Enabled;
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property Height;
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property HelpContext;
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property HelpKeyword;
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property HelpType;
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property Hint;
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property HitTest default True;
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property Locked;
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property Margins;
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property Opacity;
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property Padding;
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property PopupMenu;
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property Position;
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property RotationAngle;
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property RotationCenter;
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property Scale;
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property Size;
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property StyleLookup;
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property Visible;
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property Width;
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property OnClick;
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property OnDblClick;
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property OnMouseDown;
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property OnMouseMove;
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property OnMouseUp;
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property OnMouseWheel;
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property OnMouseEnter;
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property OnMouseLeave;
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end;
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TAuraWorkspace = class(TStyledControl)
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private
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FConnections: TArray<TPinConnection>;
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protected
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procedure Paint; override;
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procedure DoDeleteChildren; override;
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public
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procedure BuildTree(const Root: IAstNode; const Position: TPointF; AMode: TVisualizationMode);
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published
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// Standard control properties
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property Align;
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property Anchors;
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property ClipChildren default True;
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property Cursor default crDefault;
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property DragMode default TDragMode.dmManual;
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property Enabled;
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property Height;
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property HelpContext;
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property HelpKeyword;
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property HelpType;
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property Hint;
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property HitTest default True;
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property Locked;
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property Margins;
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property Opacity;
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property Padding;
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property PopupMenu;
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property Position;
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property RotationAngle;
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property RotationCenter;
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property Scale;
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property Size;
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property StyleLookup;
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property Visible;
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property Width;
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property OnClick;
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property OnDblClick;
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property OnMouseDown;
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property OnMouseMove;
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property OnMouseUp;
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property OnMouseWheel;
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property OnMouseEnter;
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property OnMouseLeave;
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end;
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TAstToAuraNodeVisitor = class(TInterfacedObject, IAstVisitor)
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public
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@@ -135,52 +262,6 @@ type
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function VisitSeriesLength(const Node: ISeriesLengthNode): TAstValue;
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end;
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TAuraWorkspace = class(TStyledControl)
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private
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FConnections: TArray<TPinConnection>;
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protected
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procedure Paint; override;
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procedure DoDeleteChildren; override;
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public
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procedure BuildTree(const Root: IAstNode; const Position: TPointF; AMode: TVisualizationMode);
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published
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// Standard control properties
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property Align;
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property Anchors;
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property ClipChildren default True;
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property Cursor default crDefault;
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property DragMode default TDragMode.dmManual;
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property Enabled;
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property Height;
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property HelpContext;
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property HelpKeyword;
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property HelpType;
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property Hint;
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property HitTest default True;
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property Locked;
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property Margins;
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property Opacity;
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property Padding;
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property PopupMenu;
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property Position;
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property RotationAngle;
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property RotationCenter;
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property Scale;
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property Size;
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property StyleLookup;
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property Visible;
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property Width;
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property OnClick;
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property OnDblClick;
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property OnMouseDown;
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property OnMouseMove;
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property OnMouseUp;
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property OnMouseWheel;
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property OnMouseEnter;
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property OnMouseLeave;
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end;
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implementation
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uses
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@@ -192,7 +273,6 @@ type
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// This visitor converts an AST expression subtree into a single string.
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TAstToTextVisitor = class(TInterfacedObject, IAstVisitor)
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public
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constructor Create;
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{ IAstVisitor }
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function VisitConstant(const Node: IConstantNode): TAstValue;
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function VisitIdentifier(const Node: IIdentifierNode): TAstValue;
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@@ -212,11 +292,6 @@ type
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function VisitSeriesLength(const Node: ISeriesLengthNode): TAstValue;
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end;
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constructor TAstToTextVisitor.Create;
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begin
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inherited Create;
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end;
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{ TAstToTextVisitor }
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function TAstToTextVisitor.VisitAddSeriesItem(const Node: IAddSeriesItemNode): TAstValue;
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@@ -376,6 +451,273 @@ begin
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InputPin := AInputPin;
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end;
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{ TAuraNode }
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constructor TAuraNode.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FIsDragging := False;
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// Default border settings
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FBorderColor := TAlphaColors.Gray;
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FBorderWidth := 1;
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FBorderRadius := 9; // Sharp corners by default
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// Default title settings
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FTitle := 'Node';
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FTitleFont := TFont.Create;
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FTitleFont.Family := 'Segoe UI';
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FTitleFont.Size := 11;
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FTitleFont.Style := [TFontStyle.fsBold];
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FTitleFont.OnChanged := TitleFontChanged;
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FTitleFontColor := TAlphaColors.Black;
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// Default state for frameless mode
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FFrameless := False;
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Width := 80;
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Height := 45;
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// The panel must be able to receive mouse events.
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HitTest := True;
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// Clip children to the panel's bounds.
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ClipChildren := True;
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end;
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destructor TAuraNode.Destroy;
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begin
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FTitleFont.Free;
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inherited;
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end;
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procedure TAuraNode.Paint;
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var
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rect, titleRect: TRectF;
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effectiveBorderWidth: Single;
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begin
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inherited; // Allow styled painting to occur first (if any)
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if FFrameless then
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begin
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Canvas.Fill.Kind := TBrushKind.Solid;
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Canvas.Fill.Color := $20C0C0C0; // Transparent Silver
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Canvas.Stroke.Kind := TBrushKind.None;
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// In frameless mode, draw a transparent background and ignore the border.
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Canvas.FillRect(TRectF.Create(0, 0, Width, Height), 0, 0, [], 1.0);
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effectiveBorderWidth := 0;
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end
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else
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begin
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// Custom painting for the border
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if (FBorderWidth > 0) and (FBorderColor <> TAlphaColors.Null) then
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begin
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rect := TRectF.Create(0, 0, Width, Height);
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// Inflate inwards so the border is fully visible within the control's bounds
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rect.Inflate(-FBorderWidth / 2, -FBorderWidth / 2);
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Canvas.Stroke.Kind := TBrushKind.Solid;
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Canvas.Stroke.Color := FBorderColor;
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Canvas.Stroke.Thickness := FBorderWidth;
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if FFrameless then
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begin
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Canvas.Fill.Kind := TBrushKind.Solid;
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Canvas.Fill.Color := $20C0C0C0; // Transparent Silver
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Canvas.FillRect(rect, FBorderRadius, FBorderRadius, AllCorners, 1.0, TCornerType.Round);
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end
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else
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Canvas.DrawRect(rect, FBorderRadius, FBorderRadius, AllCorners, 1.0, TCornerType.Round);
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end;
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effectiveBorderWidth := FBorderWidth;
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end;
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// Draw the title
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if not FTitle.IsEmpty then
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begin
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// Define the rectangle for the title at the top of the control
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titleRect := TRectF.Create(0, effectiveBorderWidth, Width, effectiveBorderWidth + FTitleFont.Size * 1.8);
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Canvas.Font.Assign(FTitleFont);
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Canvas.Fill.Color := FTitleFontColor;
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// Draw the text centered horizontally and vertically within the title rectangle
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Canvas.FillText(titleRect, FTitle, False, 1.0, [], TTextAlign.Center, TTextAlign.Center);
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end;
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end;
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procedure TAuraNode.SetBorderColor(const Value: TAlphaColor);
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begin
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if FBorderColor <> Value then
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begin
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FBorderColor := Value;
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Repaint;
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end;
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end;
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procedure TAuraNode.SetBorderRadius(const Value: Single);
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begin
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if FBorderRadius <> Value then
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begin
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FBorderRadius := Value;
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Repaint;
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end;
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end;
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procedure TAuraNode.SetBorderWidth(const Value: Single);
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begin
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if FBorderWidth <> Value then
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begin
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FBorderWidth := Value;
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Repaint;
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end;
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end;
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procedure TAuraNode.SetFrameless(const Value: Boolean);
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begin
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if FFrameless <> Value then
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begin
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FFrameless := Value;
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Repaint;
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end;
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end;
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procedure TAuraNode.SetTitle(const Value: string);
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begin
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if FTitle <> Value then
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begin
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FTitle := Value;
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Repaint;
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end;
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end;
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procedure TAuraNode.SetTitleFont(const Value: TFont);
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begin
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FTitleFont.Assign(Value);
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end;
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procedure TAuraNode.SetTitleFontColor(const Value: TAlphaColor);
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begin
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if FTitleFontColor <> Value then
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begin
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FTitleFontColor := Value;
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Repaint;
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end;
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end;
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procedure TAuraNode.TitleFontChanged(Sender: TObject);
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begin
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Repaint;
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end;
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procedure TAuraNode.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Single);
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begin
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inherited;
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if Button = TMouseButton.mbLeft then
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begin
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if ObjectAtPoint(LocalToScreen(TPointF.Create(X, Y))) = Self as IControl then
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begin
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FIsDragging := True;
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FDownPos := TPointF.Create(X, Y);
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end;
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end;
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end;
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procedure TAuraNode.MouseMove(Shift: TShiftState; X, Y: Single);
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begin
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inherited;
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if FIsDragging then
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begin
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var deltaX := X - FDownPos.X;
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var deltaY := Y - FDownPos.Y;
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Position.X := Position.X + deltaX;
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Position.Y := Position.Y + deltaY;
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if ParentControl <> nil then
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ParentControl.Repaint;
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end;
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end;
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procedure TAuraNode.MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Single);
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begin
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inherited;
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if (Button = TMouseButton.mbLeft) and (FIsDragging) then
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begin
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FIsDragging := False;
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end;
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end;
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{ TAuraWorkspace }
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procedure TAuraWorkspace.BuildTree(const Root: IAstNode; const Position: TPointF; AMode: TVisualizationMode);
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begin
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var connections := TList<TPinConnection>.Create;
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try
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Root.Accept(TAstToAuraNodeVisitor.Create(Self, Self, Position, connections, nil, AMode));
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FConnections := FConnections + connections.ToArray;
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finally
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connections.Free;
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end;
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end;
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procedure TAuraWorkspace.DoDeleteChildren;
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begin
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FConnections := nil;
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inherited;
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end;
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procedure TAuraWorkspace.Paint;
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var
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connection: TPinConnection;
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startPoint, endPoint, pinCenter: TPointF;
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path: TPathData;
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controlPoint1, controlPoint2: TPointF;
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controlOffset: Single;
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begin
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inherited;
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Canvas.Stroke.Kind := TBrushKind.Solid;
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Canvas.Stroke.Thickness := 2;
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// Go through all stored connections and draw them
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for connection in FConnections do
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begin
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// Get the absolute coordinates of the pin centers
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pinCenter := TPointF.Create(connection.OutputPin.Width / 2, connection.OutputPin.Height / 2);
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var absoluteStart := connection.OutputPin.LocalToAbsolute(pinCenter);
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pinCenter := TPointF.Create(connection.InputPin.Width / 2, connection.InputPin.Height / 2);
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var absoluteEnd := connection.InputPin.LocalToAbsolute(pinCenter);
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// Convert them to the local coordinates of the workspace
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startPoint := AbsoluteToLocal(absoluteStart);
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endPoint := AbsoluteToLocal(absoluteEnd);
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var str := connection.InputPin.TagString;
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if Pos('data', str) = 0 then
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Canvas.Stroke.Color := TAstToAuraNodeVisitor.cExecPinColor
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else
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Canvas.Stroke.Color := TAstToAuraNodeVisitor.cDataPinColor;
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// Draw a Bezier curve with horizontal tangents at start and end points.
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path := TPathData.Create;
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try
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controlOffset := max(25, 0.5 * endPoint.Distance(startPoint));
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controlPoint1 := TPointF.Create(startPoint.X + controlOffset, startPoint.Y);
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controlPoint2 := TPointF.Create(endPoint.X - controlOffset, endPoint.Y);
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path.MoveTo(startPoint);
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path.CurveTo(controlPoint1, controlPoint2, endPoint);
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Canvas.DrawPath(path, 1.0);
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finally
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path.Free;
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end;
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end;
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end;
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{ TAstToAuraNodeVisitor }
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constructor TAstToAuraNodeVisitor.Create(
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@@ -1432,74 +1774,4 @@ begin
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Result := TAstValue.Void;
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end;
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{ TAuraWorkspace }
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procedure TAuraWorkspace.BuildTree(const Root: IAstNode; const Position: TPointF; AMode: TVisualizationMode);
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begin
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var connections := TList<TPinConnection>.Create;
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try
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Root.Accept(TAstToAuraNodeVisitor.Create(Self, Self, Position, connections, nil, AMode));
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FConnections := FConnections + connections.ToArray;
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finally
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connections.Free;
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end;
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end;
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procedure TAuraWorkspace.DoDeleteChildren;
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begin
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FConnections := nil;
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inherited;
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end;
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procedure TAuraWorkspace.Paint;
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var
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connection: TPinConnection;
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startPoint, endPoint, pinCenter: TPointF;
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path: TPathData;
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controlPoint1, controlPoint2: TPointF;
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controlOffset: Single;
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begin
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inherited;
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Canvas.Stroke.Kind := TBrushKind.Solid;
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Canvas.Stroke.Thickness := 2;
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|
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// Go through all stored connections and draw them
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for connection in FConnections do
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begin
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// Get the absolute coordinates of the pin centers
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pinCenter := TPointF.Create(connection.OutputPin.Width / 2, connection.OutputPin.Height / 2);
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var absoluteStart := connection.OutputPin.LocalToAbsolute(pinCenter);
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|
||||
pinCenter := TPointF.Create(connection.InputPin.Width / 2, connection.InputPin.Height / 2);
|
||||
var absoluteEnd := connection.InputPin.LocalToAbsolute(pinCenter);
|
||||
|
||||
// Convert them to the local coordinates of the workspace
|
||||
startPoint := AbsoluteToLocal(absoluteStart);
|
||||
endPoint := AbsoluteToLocal(absoluteEnd);
|
||||
|
||||
var str := connection.InputPin.TagString;
|
||||
if Pos('data', str) = 0 then
|
||||
Canvas.Stroke.Color := TAstToAuraNodeVisitor.cExecPinColor
|
||||
else
|
||||
Canvas.Stroke.Color := TAstToAuraNodeVisitor.cDataPinColor;
|
||||
|
||||
// Draw a Bezier curve with horizontal tangents at start and end points.
|
||||
path := TPathData.Create;
|
||||
try
|
||||
controlOffset := max(25, 0.5 * endPoint.Distance(startPoint));
|
||||
|
||||
controlPoint1 := TPointF.Create(startPoint.X + controlOffset, startPoint.Y);
|
||||
controlPoint2 := TPointF.Create(endPoint.X - controlOffset, endPoint.Y);
|
||||
|
||||
path.MoveTo(startPoint);
|
||||
path.CurveTo(controlPoint1, controlPoint2, endPoint);
|
||||
|
||||
Canvas.DrawPath(path, 1.0);
|
||||
finally
|
||||
path.Free;
|
||||
end;
|
||||
end;
|
||||
end;
|
||||
|
||||
end.
|
||||
|
||||
Reference in New Issue
Block a user