| 1 | ; Project name : XTIDE Universal BIOS Configurator v2
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| 2 | ; Description : Functions for accessing MENUPAGE structs.
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| 3 |
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| 4 | ;
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| 5 | ; XTIDE Universal BIOS and Associated Tools
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| 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
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| 7 | ;
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| 8 | ; This program is free software; you can redistribute it and/or modify
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| 9 | ; it under the terms of the GNU General Public License as published by
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| 10 | ; the Free Software Foundation; either version 2 of the License, or
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| 11 | ; (at your option) any later version.
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| 12 | ;
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| 13 | ; This program is distributed in the hope that it will be useful,
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| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | ; GNU General Public License for more details.
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| 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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| 18 | ;
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| 19 |
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| 20 | ; Section containing code
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| 21 | SECTION .text
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| 22 |
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| 23 | ;--------------------------------------------------------------------
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| 24 | ; Menupage_ChangeToNewMenupageInDSSI
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| 25 | ; Parameters:
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| 26 | ; DS:SI: Ptr to new MENUPAGE
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| 27 | ; SS:BP: Menu handle
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| 28 | ; Returns:
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| 29 | ; Nothing
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| 30 | ; Corrupts registers:
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| 31 | ; AX, DI
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| 32 | ;--------------------------------------------------------------------
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| 33 | ALIGN JUMP_ALIGN
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| 34 | Menupage_ChangeToNewMenupageInDSSI:
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| 35 | mov di, si
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| 36 | call Menupage_SetActiveMenupageFromDSDI
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| 37 | call Menupage_GetVisibleMenuitemsToAXfromDSDI
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| 38 | CALL_MENU_LIBRARY SetTotalItemsFromAX
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| 39 | xor ax, ax
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| 40 | CALL_MENU_LIBRARY HighlightItemFromAX
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| 41 | CALL_MENU_LIBRARY RefreshWindow
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| 42 | ret
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| 43 |
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| 44 |
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| 45 | ;--------------------------------------------------------------------
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| 46 | ; SetActiveMenupageFromDSDI
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| 47 | ; Parameters:
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| 48 | ; DS:DI: Ptr to MENUPAGE to set active
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| 49 | ; SS:BP: Menu handle
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| 50 | ; Returns:
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| 51 | ; Nothing
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| 52 | ; Corrupts registers:
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| 53 | ; Nothing
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| 54 | ;--------------------------------------------------------------------
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| 55 | ALIGN JUMP_ALIGN
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| 56 | Menupage_SetActiveMenupageFromDSDI:
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| 57 | mov [g_cfgVars+CFGVARS.pMenupage], di
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| 58 | ret
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| 59 |
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| 60 |
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| 61 | ;--------------------------------------------------------------------
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| 62 | ; Menupage_GetActiveMenupageToDSDI:
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| 63 | ; Parameters:
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| 64 | ; SS:BP: Menu handle
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| 65 | ; Returns:
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| 66 | ; DS:DI: Ptr to MENUPAGE
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| 67 | ; Corrupts registers:
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| 68 | ; Nothing
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| 69 | ;--------------------------------------------------------------------
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| 70 | ALIGN JUMP_ALIGN
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| 71 | Menupage_GetActiveMenupageToDSDI:
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| 72 | push cs
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| 73 | pop ds
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| 74 | mov di, [g_cfgVars+CFGVARS.pMenupage]
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| 75 | ret
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| 76 |
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| 77 |
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| 78 | ;--------------------------------------------------------------------
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| 79 | ; Menupage_GetVisibleMenuitemsToAXfromDSDI
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| 80 | ; Parameters:
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| 81 | ; DS:DI: Ptr to MENUPAGE
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| 82 | ; Returns:
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| 83 | ; AX: Number of visible MENUITEMs in MENUPAGE
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| 84 | ; Corrupts registers:
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| 85 | ; BX, CX
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| 86 | ;--------------------------------------------------------------------
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| 87 | ALIGN JUMP_ALIGN
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| 88 | Menupage_GetVisibleMenuitemsToAXfromDSDI:
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| 89 | xor ax, ax
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| 90 | mov cx, [di+MENUPAGE.wMenuitems]
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| 91 | lea bx, [di+MENUPAGE.rgMenuitem]
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| 92 |
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| 93 | ALIGN JUMP_ALIGN
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| 94 | .CheckVisibilityFromNextMenuitem:
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| 95 | test BYTE [bx+MENUITEM.bFlags], FLG_MENUITEM_VISIBLE
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| 96 | jz SHORT .PrepareToLoop
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| 97 | inc ax
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| 98 | .PrepareToLoop:
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| 99 | add bx, BYTE MENUITEM_size
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| 100 | loop .CheckVisibilityFromNextMenuitem
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| 101 | ret
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| 102 |
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| 103 |
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| 104 | ;--------------------------------------------------------------------
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| 105 | ; Menupage_GetCXthVisibleMenuitemToDSSIfromDSDI
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| 106 | ; Parameters:
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| 107 | ; CX: nth visible MENUITEM to find
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| 108 | ; DS:DI: Ptr to MENUPAGE
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| 109 | ; Returns:
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| 110 | ; DS:SI: Ptr to CXth visible MENUITEM
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| 111 | ; CF: Set if MENUITEM found
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| 112 | ; Cleared if MENUITEM not found
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| 113 | ; Corrupts registers:
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| 114 | ; AX, CX
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| 115 | ;--------------------------------------------------------------------
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| 116 | ALIGN JUMP_ALIGN
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| 117 | Menupage_GetCXthVisibleMenuitemToDSSIfromDSDI:
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| 118 | mov ax, [di+MENUPAGE.wMenuitems]
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| 119 | cmp cx, ax
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| 120 | jae SHORT .MenuitemNotFound
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| 121 | xchg ax, cx
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| 122 | inc ax
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| 123 | lea si, [di+MENUPAGE.rgMenuitem]
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| 124 | ALIGN JUMP_ALIGN
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| 125 | .CheckNextMenuitem:
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| 126 | test BYTE [si+MENUITEM.bFlags], FLG_MENUITEM_VISIBLE
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| 127 | jz SHORT .PrepareToLoop
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| 128 | dec ax
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| 129 | jz SHORT .MenuitemFound
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| 130 | .PrepareToLoop:
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| 131 | add si, BYTE MENUITEM_size
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| 132 | loop .CheckNextMenuitem
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| 133 | .MenuitemNotFound:
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| 134 | clc
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| 135 | ret
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| 136 | ALIGN JUMP_ALIGN
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| 137 | .MenuitemFound:
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| 138 | stc
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| 139 | ret
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