avr: added Widget_DrawCharAt

avr/modules/lcd2/gui2/generic/widget.asm

@@ -734,6 +734,7 @@ Widget_DrawTextSDRAM:
 ; @param  R5:R4   X relative to widget
 ; @param  R7:R6   Y relative to widget
 ; @param  X       pointer to text in SDRAM
+; @return R5:R4   X pos behind last written char
 ; @clobbers any, !Z
 
 Widget_DrawColoredTextSDRAM:
@@ -756,6 +757,32 @@ Widget_DrawColoredTextSDRAM_loopEnd:
 
 
 
+; ---------------------------------------------------------------------------
+; @routine Widget_DrawCharAt @global
+;
+; @param  Z       byte address of widget object (for LPM!)
+; @param 
+; @param  R5:R4   X relative to widget
+; @param  R7:R6   Y relative to widget
+; @param  X       pointer to text in SDRAM
+; @clobbers any, !Z
+
+Widget_DrawCharAt:
+  push r16
+    rcall Widget_GetSdramPtr        ; (none)
+    rcall Widget_SelectColors       ; (R16)
+    rcall widgetCalcAbsPosAndBorders           ; (R16, R17)
+  pop r16
+  push xl
+    push xh
+      rcall widgetDrawChar                 ; (any, !Y, !R6, !R7, !R8, !R9, !R10, !R11)
+    pop xh
+  pop xl
+  ret
+; @end
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine widgetCalcAbsPosAndBorders
 ;