more work on dialogs.

avr/modules/lcd2/ili9341/graphops.asm

@@ -63,6 +63,57 @@ Display_FillRect_loopW:
 
 
 
+; ---------------------------------------------------------------------------
+; @routine Display_DrawRect @global
+;
+; @param r3:r2 color
+; @param r5:r4   X0
+; @param r7:r6   Y0
+; @param r9:r8   X1/W
+; @param r11:r10 Y1/H
+
+Display_DrawRect:
+  push r15
+    in r15, SREG
+    cli
+
+    ; upper H line
+    rcall Display_DrawHLine
+    push r6                    ; save Y0
+      push r7
+        add r6, r10
+        adc r7, r11
+        ldi r16, 1
+        sub r6, r16
+        sbc r7, r16
+        add r7, r16
+        ; lower H line
+        rcall Display_DrawHLine
+      pop r7
+    pop r6
+
+    ; left H line
+    rcall Display_DrawVLine
+    push r4                    ; save X0
+      push r5
+        add r4, r8
+        adc r5, r9
+        ldi r16, 1
+        sub r4, r16
+        sbc r5, r16
+        add r5, r16
+        ; right H line
+        rcall Display_DrawVLine
+      pop r5
+    pop r4
+
+    out SREG, r15
+  pop r15
+  ret
+; @end
+
+
+
 ; ---------------------------------------------------------------------------
 ; @routine Display_DrawHLine @global
 ;