clicking near line works, darg for line works, copy does not work

src/SqueakWhiteboard-Core/WBEdgeOfLine.class.st

@@ -83,6 +83,15 @@ WBEdgeOfLine >> checkArrwoDirection [
 		ifFalse: [self line switchVisibilityOfArrowHead] 
 ]
 
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:52'
+}
+WBEdgeOfLine >> handlesMouseOver: anEvent [
+
+	^ true
+]
+
 {
 	#category : #initialization,
 	#'squeak_changestamp' : 'si 6/20/2024 23:26'
@@ -139,6 +148,24 @@ WBEdgeOfLine >> makeColorButtons [
 		yourself
 ]
 
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:54'
+}
+WBEdgeOfLine >> mouseEnter: anEvent [
+
+	self line edges do: [:d | d morph color: self line morph borderColor]
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:49'
+}
+WBEdgeOfLine >> mouseLeave: anEvent [
+
+	self line edges do: [:d | d morph color: Color transparent]
+]
+
 {
 	#category : #'event handling',
 	#'squeak_changestamp' : 'si 6/14/2024 11:46'
@@ -174,6 +201,18 @@ WBEdgeOfLine >> setDefaultValues [
 		supportsText: false
 ]
 
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:53'
+}
+WBEdgeOfLine >> setupEventHandling [
+"pass event triggers from the element itself to the methods of the WBElement"
+
+	super setupEventHandling.
+	self morph on: #mouseEnter send: #mouseEnter: to: self.
+	self morph on: #mouseLeave send: #mouseLeave: to: self
+]
+
 {
 	#category : #geometry,
 	#'squeak_changestamp' : 'si 6/21/2024 00:24'

src/SqueakWhiteboard-Core/WBElement.class.st

@@ -887,14 +887,14 @@ WBElement >> setPopupPosition [
 
 {
 	#category : #'event handling',
-	#'squeak_changestamp' : 'is 6/26/2024 22:57'
+	#'squeak_changestamp' : 'si 7/7/2024 17:51'
 }
 WBElement >> setupEventHandling [
 "pass event triggers from the element itself to the methods of the WBElement"
 
 	self morph on: #mouseDown send: #mouseDown: to: self.
 	self morph on: #mouseUp send: #mouseUp: to: self.
-	self morph on: #mouseMove send: #mouseMove: to: self
+	self morph on: #mouseMove send: #mouseMove: to: self.
 ]
 
 {

src/SqueakWhiteboard-Core/WBLine.class.st

@@ -7,28 +7,13 @@ Class {
 	#superclass : #WBPolygonElement,
 	#instVars : [
 		'state',
-		'arrowHead'
+		'arrowHead',
+		'hitbox'
 	],
 	#category : #'SqueakWhiteboard-Core',
 	#'squeak_changestamp' : 'is 6/23/2024 02:19'
 }
 
-{
-	#category : #geometry,
-	#'squeak_changestamp' : 'is 6/18/2024 00:03'
-}
-WBLine >> angleForEdgeOfLines [
-	| lengthX lengthY length sin |
-
-	lengthX := (self edges at: 2) position x - (self edges at: 1) position x.
-	lengthY :=(self edges at: 2) position y - (self edges at: 1)  position y.
-	length := (lengthX squared + lengthY  squared) safeSquareRoot.
-	sin := lengthY / length.
-	^ sin arcSin * (36 / 2 * (3.141592))
-
-
-]
-
 {
 	#category : #geometry,
 	#'squeak_changestamp' : 'is 6/18/2024 00:03'
@@ -121,6 +106,24 @@ WBLine >> delete [
 	super delete
 ]
 
+{
+	#category : #drag,
+	#'squeak_changestamp' : 'si 7/7/2024 18:18'
+}
+WBLine >> dragEnd: anEvent [
+
+	self edges do: [:d | d dragEnd: anEvent]
+]
+
+{
+	#category : #drag,
+	#'squeak_changestamp' : 'si 7/7/2024 18:10'
+}
+WBLine >> dragStart: anEvent [
+
+	self dragOffset: self position - anEvent cursorPoint
+]
+
 {
 	#category : #arrow,
 	#'squeak_changestamp' : 'si 6/20/2024 23:03'
@@ -130,9 +133,27 @@ WBLine >> hideArrowHead [
 	self arrowHead isVisible: false
 ]
 
+{
+	#category : #accessing,
+	#'squeak_changestamp' : 'si 7/5/2024 12:12'
+}
+WBLine >> hitbox [
+
+	^ hitbox
+]
+
+{
+	#category : #accessing,
+	#'squeak_changestamp' : 'si 7/5/2024 12:13'
+}
+WBLine >> hitbox: aMorph [
+
+	hitbox := aMorph
+]
+
 {
 	#category : #initialization,
-	#'squeak_changestamp' : 'is 6/23/2024 01:40'
+	#'squeak_changestamp' : 'si 7/5/2024 12:16'
 }
 WBLine >> initialize [
 
@@ -143,19 +164,40 @@ WBLine >> initialize [
 
 {
 	#category : #'event handeling',
-	#'squeak_changestamp' : 'si 6/20/2024 23:00'
+	#'squeak_changestamp' : 'si 7/7/2024 18:20'
 }
 WBLine >> mouseDown: anEvent [
+
+	self state = 2 ifTrue: 
+		[(self canvas elementToSpawn) isNil ifTrue:
+				[self canvas 
+					deactivateElement;
+					deactivateTextbox.
+				self edges do: [:d | d mouseDown: anEvent].
+				self dragStart: anEvent.
+				(self edges at: 1) showPopUp.
+				self canvas activeElement: (self edges at: 1)]]
 ]
 
 {
 	#category : #'event handeling',
-	#'squeak_changestamp' : 'is 6/18/2024 00:10'
+	#'squeak_changestamp' : 'si 7/7/2024 18:14'
+}
+WBLine >> mouseMove: anEvent [
+
+	self state = 2 ifTrue: 
+		[super mouseMove: anEvent.
+		self edges do: [:d | d mouseMove: anEvent]]
+]
+
+{
+	#category : #'event handeling',
+	#'squeak_changestamp' : 'si 7/7/2024 18:18'
 }
 WBLine >> mouseUp: anEvent [
 
 	(self canvas elementToSpawn) isNil
-		ifTrue: [self dragOffset: self position - anEvent cursorPoint]
+		ifTrue: [self dragEnd: anEvent]
 		ifFalse: [self spawnEdgeOfLineAt: anEvent]
 ]
 
@@ -170,7 +212,7 @@ WBLine >> showArrowHead [
 
 {
 	#category : #buildLine,
-	#'squeak_changestamp' : 'si 6/25/2024 13:39'
+	#'squeak_changestamp' : 'si 7/7/2024 17:34'
 }
 WBLine >> spawnEdgeOfLineAt: aMouseEvent [
 
@@ -196,6 +238,10 @@ WBLine >> spawnEdgeOfLineAt: aMouseEvent [
 				addElement: (self edges at: 1);
 				addElement: (self edges at: 2);
 				dropElement: aMouseEvent.
+			self hitbox: WBLineHitbox new.
+			self hitbox goBehind.
+			self hitbox line: self.
+			self addMorph: self hitbox.
 			self updateEdges.
 			self state: 2]
 ]
@@ -256,11 +302,12 @@ WBLine >> updateArrowHead [
 
 {
 	#category : #buildLine,
-	#'squeak_changestamp' : 'is 6/18/2024 19:24'
+	#'squeak_changestamp' : 'si 7/5/2024 12:26'
 }
 WBLine >> updateEdges [
 
 	self setVertices: { (self edges at: 2) center . (self edges at: 1) center }.
+	self hitbox setVertices: { (self edges at: 2) center . (self edges at: 1) center . (self edges at: 2) center}.
 	self updateArrowHead
 
 ]

src/SqueakWhiteboard-Core/WBLineHitbox.class.st

@@ -0,0 +1,136 @@
+Class {
+	#name : #WBLineHitbox,
+	#superclass : #PolygonMorph,
+	#instVars : [
+		'line'
+	],
+	#category : #'SqueakWhiteboard-Core'
+}
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 15:12'
+}
+WBLineHitbox >> containsPoint: aPoint [ 
+"Extend the bounds to include the border area"
+
+        ^ self isClickNearLine: aPoint
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/5/2024 12:23'
+}
+WBLineHitbox >> handlesMouseDown: anEvent [
+
+	^ true
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/5/2024 14:09'
+}
+WBLineHitbox >> handlesMouseOver: anEvent [
+
+	^ true
+]
+
+{
+	#category : #initialization,
+	#'squeak_changestamp' : 'si 7/7/2024 17:42'
+}
+WBLineHitbox >> initialize [
+
+	super initialize.
+	self borderWidth: 20.
+	self borderColor: Color transparent
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 15:11'
+}
+WBLineHitbox >> isClickNearLine: aPoint [
+
+	^ self point: aPoint isNearLineFrom: (self vertices at: 1) to: (self vertices at: 2) within: borderWidth / 2
+]
+
+{
+	#category : #accessing,
+	#'squeak_changestamp' : 'si 7/7/2024 17:33'
+}
+WBLineHitbox >> line [
+
+	^ line
+]
+
+{
+	#category : #accessing,
+	#'squeak_changestamp' : 'si 7/7/2024 17:33'
+}
+WBLineHitbox >> line: anElement [
+
+	line := anElement
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:35'
+}
+WBLineHitbox >> mouseDown: anEvent [
+
+	self line mouseDown: anEvent
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:49'
+}
+WBLineHitbox >> mouseEnter: anEvent [
+
+	self line edges do: [:d | d morph color: self line morph borderColor]
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 17:46'
+}
+WBLineHitbox >> mouseLeave: anEvent [
+
+	self line edges do: [:d | d morph color: Color transparent]
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 18:05'
+}
+WBLineHitbox >> mouseMove: anEvent [
+
+	self line mouseMove: anEvent
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 18:17'
+}
+WBLineHitbox >> mouseUp: anEvent [
+
+	self line mouseUp: anEvent
+]
+
+{
+	#category : #'event handling',
+	#'squeak_changestamp' : 'si 7/7/2024 15:11'
+}
+WBLineHitbox >> point: p isNearLineFrom: p1 to: p2 within: distance [
+	|slope b distanceToP|
+	"compute slope"
+	slope := (p2 y - p1 y)/(p2 x - p1 x).
+
+	"compute b for line"
+	b := p1 y - (slope * p1 x).
+
+	"compute distance to p"
+	distanceToP := (((slope negated * p x) + (p y) - b) abs) / (slope * slope + 1) sqrt. 
+	^ distanceToP <= distance. 
+]