From 0081c33c0020ce212c24e672de1eccd79fda1dd5 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Wed, 4 Mar 2026 23:25:12 +0100
Subject: [PATCH] gui2: added Object_Alloc, OBJ_GetRoot

---
 avr/modules/lcd2/gui2/base/object.asm | 82 ++++++++++++++++++++++-----
 1 file changed, 68 insertions(+), 14 deletions(-)

diff --git a/avr/modules/lcd2/gui2/base/object.asm b/avr/modules/lcd2/gui2/base/object.asm
index 154cb9b..2d69c0b 100644
--- a/avr/modules/lcd2/gui2/base/object.asm
+++ b/avr/modules/lcd2/gui2/base/object.asm
@@ -43,11 +43,10 @@
 
 ; signals
 .equ OBJECT_SIGNAL_NONE               =  0
-.equ OBJECT_SIGNAL_CREATE             =  1
-.equ OBJECT_SIGNAL_DESTROY            =  2
-.equ OBJECT_SIGNAL_TIMER              =  3
-.equ OBJECT_SIGNAL_RECVMSG            =  4  ; X=msg
-.equ OBJECT_SIGNAL_NEXTFREE           =  5
+.equ OBJECT_SIGNAL_DESTROY            =  1
+.equ OBJECT_SIGNAL_TIMER              =  2
+.equ OBJECT_SIGNAL_RECVMSG            =  3  ; X=msg
+.equ OBJECT_SIGNAL_NEXTFREE           =  4
 
 
 
@@ -58,19 +57,54 @@
 
 
 
+; ---------------------------------------------------------------------------
+; @routine Object_Alloc @global
+;
+; @return CFLAG set if object created, cleared otherwise
+; @return Y address of created object in SDRAM (if CFLAG set)
+; @param r25:r24 size of object to allocate
+; @clobbers !r16, !r17
+
+Object_Alloc:
+  push r16
+    push r17
+      bigcall Heap_Alloc              ; X=mem allocated (r16, r17, r18, r19, r24, r25, X)
+    pop r17
+  pop r16
+  brcc Object_Alloc_ret
+  mov yl, xl
+  mov yh, xh
+  sec
+Object_Alloc_ret:
+  ret
+; @end
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine OBJ_Init @global
 ;
 ; @param Y address of object in SDRAM
+; @param r16 value for OBJECT_OFFS_OPTS_LO
+; @param r17 value for OBJECT_OFFS_OPTS_HI
 ; @clobbers r16, r17, X
 
 OBJ_Init:
-  mov xl, yl
-  mov xh, yh
-  clr r16
-  ldi r17, OBJECT_SIZE
-  bigcall Utils_FillSram                    ; (r17, X)
+  push r16
+    push r17
+      mov xl, yl
+      mov xh, yh
+      clr r16
+      ldi r17, OBJECT_SIZE
+      bigcall Utils_FillSram                    ; (r17, X)
+    pop r17
+  pop r16
   
+  ; set opts
+  std Y+OBJECT_OFFS_OPTS_LO, r16
+  std Y+OBJECT_OFFS_OPTS_HI, r17
+  
+  ; set default signal map
   ldi r16, LOW(Object_DefaultSignalmap*2)
   std Y+OBJECT_OFFS_SIGNALMAP_LO, r16
   ldi r16, HIGH(Object_DefaultSignalmap*2)
@@ -132,13 +166,9 @@ OBJ_Free_ret:
 
 OBJ_OnDestroy:
   rcall OBJ_Unlink                ; (r16, r17, r18, r19, r20, r21, X)
-
-#ifdef MODULES_HEAP
   mov xl, yl
   mov xh, yh
   bigcall Heap_Free               ; (r16, r17, r24, r25, X)
-#endif
-
   sec
   ret
 ; @end
@@ -386,6 +416,28 @@ OBJ_Unlink_ret:
 
 
 
+; ---------------------------------------------------------------------------
+; @routine OBJ_GetRoot @global
+;
+; @param  Y  address of object
+; @return Y  address pointer to root object
+; @clobbers r18, r19
+
+OBJ_GetRoot:
+OBJ_GetRoot_loop:
+    rcall OBJ_GetParent          ; (none)
+    brcc OBJ_GetRoot_found       ; no parent, return current Y
+    mov yl, r18
+    mov yh, r19
+  rjmp OBJ_GetRoot_loop
+OBJ_GetRoot_found:
+  sec
+OBJ_GetRoot_end:
+  ret
+; @end
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine OBJ_EmitSignal @global
 ;
@@ -687,6 +739,8 @@ objGetPredecessor_ret:
 
 
 
+; ***************************************************************************
+; data in FLASH
 
 Object_DefaultSignalmap:
   .db 0, OBJECT_SIGNAL_DESTROY, LOW(OBJ_OnDestroy), HIGH(OBJ_OnDestroy)