Completed shift left/right

projects/software/left.usm

@@ -31,15 +31,14 @@
 &Textarea2d { x1 2 y1 2 x2 2 y2 2 addr 2 cursor 1 }
 &Touch2d    { x1 2 y1 2 x2 2 y2 2 state 1 }
 
-;touch Touch2d
-
 ;lock 1
-;selection Range2d
-;pt Point2d ;mouse Point2d ;position Point2d ;scroll Point2d
-;textarea Textarea2d
-;label Label2d
-;j 2 ;addr 2
+;i 2 ;j 2 ;addr 2
 
+;selection Range2d ;position Point2d ;scroll Point2d
+
+;pt Point2d ;mouse Point2d ;touch Touch2d
+;textarea Textarea2d
+;label Label2d ( remove )
 
 |0100 @RESET
 	
@@ -59,9 +58,7 @@ BRK
 	( ctrl )
 
 	,ctrl-end ~dev/ctrl #00 EQU ~lock #00 NEQ #0000 NEQ2 JMP? POP2
-
-		( lock ) #03 =lock
-
+		( lock ) #04 =lock
 		,no-ctrl-up ~dev/ctrl #10 NEQ JMP? POP2
 			( clamp ) ,no-ctrl-up ~position.y #0000 EQU2 JMP? POP2
 			,find-lineoffset JSR =position.x 
@@ -128,26 +125,16 @@ BRK
 
 		,no-backspace ~dev/key #08 NEQ JMP? POP2
 			( erase )
+			~selection.to ~selection.from SUB2 ,shift-left JSR
 			~selection.from #0001 SUB2 =selection.from
 			~selection.from #0001 ADD2 =selection.to
-			~document.eof #0001 SUB2 =document.eof
-			~selection.from =j ( start -> end )
-			@erase-loop
-				~j #0001 ADD2 LDR ~j STR
-				( incr ) ~j #0001 ADD2 =j
-				,erase-loop ~j ~document.eof LTH2 JMP? POP2
 			( release ) #00 =dev/key
 			,redraw JSR
 			,keys-end JMP
 		@no-backspace
 
 		( insert )
-		~document.eof #0001 ADD2 =document.eof
-		~document.eof =j ( end -> start )
-		@insert-loop
-			~j #0001 SUB2 LDR ~j STR
-			( decr ) ~j #0001 SUB2 =j
-			,insert-loop ~j ~selection.from GTH2 JMP? POP2
+		~selection.to ~selection.from SUB2 ,shift-right JSR
 		~dev/key ~selection.from STR
 		~selection.from #0001 ADD2 =selection.from
 		~selection.from #0001 ADD2 =selection.to
@@ -231,6 +218,30 @@ RTS
 
 RTS
 
+@shift-left ( length )
+
+	=i
+	~selection.from #0001 SUB2 =j ( start -> end )
+	@shift-left-loop
+		( move ) ~j ~i ADD2 LDR ~j STR
+		( incr ) ~j #0001 ADD2 =j
+		,shift-left-loop ~j ~document.eof LTH2 JMP? POP2
+	~document.eof ~i SUB2 =document.eof
+
+RTS
+
+@shift-right ( length )
+
+	=i
+	~document.eof =j ( end -> start )
+	@shift-right-loop
+		( move ) ~j ~i SUB2 LDR ~j STR
+		( decr ) ~j #0001 SUB2 =j
+		,shift-right-loop ~j ~selection.from GTH2 JMP? POP2
+	~document.eof ~i ADD2 =document.eof
+
+RTS
+
 @clamp-selection
 
 	~selection.from ~selection.to LTH2 RTS?
@@ -618,8 +629,8 @@ RTS
 @arrowdown_icn [ 0010 1010 fe7c 3810 ]
 @load_icn      [ feaa d6aa d4aa f400 ]
 @save_icn      [ fe82 8282 848a f400 ]
-@filepath1     [ test.txt 00 ]
-@filepath      [ projects/software/left.usm 00 ]
+@filepath      [ test.txt 00 ]
+@filepath1     [ projects/software/left.usm 00 ]
 
 |4000 ;document Document