| 1 | ; File name : DialogMessage.asm
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| 2 | ; Project name : Assembly Library
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| 3 | ; Created date : 6.8.2010
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| 4 | ; Last update : 6.9.2010
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| 5 | ; Author : Tomi Tilli
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| 6 | ; Description : Displays message dialog.
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| 7 |
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| 8 | ; Section containing code
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| 9 | SECTION .text
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| 10 |
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| 11 | ;--------------------------------------------------------------------
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| 12 | ; DialogMessage_DisplayMessageWithInputInDSSI
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| 13 | ; Parameters:
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| 14 | ; DS:SI: Ptr to DIALOG_INPUT
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| 15 | ; SS:BP: Ptr to parent MENU
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| 16 | ; Returns:
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| 17 | ; Nothing
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| 18 | ; Corrupts registers:
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| 19 | ; AX, BX, CX, DX, SI, DI
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| 20 | ;--------------------------------------------------------------------
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| 21 | ALIGN JUMP_ALIGN
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| 22 | DialogMessage_DisplayMessageWithInputInDSSI:
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| 23 | mov bx, MessageEventHandler
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| 24 | jmp Dialog_DisplayWithDialogInputInDSSIandHandlerInBX
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| 25 |
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| 26 |
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| 27 | ;--------------------------------------------------------------------
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| 28 | ; MessageEventHandler
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| 29 | ; Common parameters for all events:
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| 30 | ; BX: Menu event (anything from MENUEVENT struct)
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| 31 | ; SS:BP: Ptr to DIALOG
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| 32 | ; Common return values for all events:
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| 33 | ; CF: Set if event processed
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| 34 | ; Cleared if event not processed
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| 35 | ; Corrupts registers:
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| 36 | ; All
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| 37 | ;--------------------------------------------------------------------
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| 38 | ALIGN JUMP_ALIGN
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| 39 | MessageEventHandler:
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| 40 | jmp [cs:bx+.rgfnEventHandlers]
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| 41 |
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| 42 |
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| 43 | ALIGN JUMP_ALIGN
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| 44 | .InitializeMenuinitFromDSSI:
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| 45 | or BYTE [bp+MENU.bFlags], FLG_MENU_USER_HANDLES_SCROLLING | FLG_MENU_NOHIGHLIGHT
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| 46 | mov WORD [bp+MENU.wHighlightedItem], 0
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| 47 | jmp Dialog_EventInitializeMenuinitFromDSSI
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| 48 |
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| 49 |
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| 50 | ALIGN JUMP_ALIGN
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| 51 | .KeyStrokeInAX:
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| 52 | call ProcessMessageScrollingKeysFromAX
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| 53 | stc
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| 54 | ret
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| 55 |
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| 56 |
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| 57 | ALIGN WORD_ALIGN
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| 58 | .rgfnEventHandlers:
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| 59 | istruc MENUEVENT
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| 60 | at MENUEVENT.InitializeMenuinitFromDSSI, dw .InitializeMenuinitFromDSSI
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| 61 | at MENUEVENT.ExitMenu, dw Dialog_EventNotHandled
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| 62 | at MENUEVENT.IdleProcessing, dw Dialog_EventNotHandled
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| 63 | at MENUEVENT.ItemHighlightedFromCX, dw Dialog_EventNotHandled
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| 64 | at MENUEVENT.ItemSelectedFromCX, dw Dialog_EventAnyThatClosesDialog
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| 65 | at MENUEVENT.KeyStrokeInAX, dw .KeyStrokeInAX
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| 66 | at MENUEVENT.RefreshTitle, dw Dialog_EventRefreshTitle
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| 67 | at MENUEVENT.RefreshInformation, dw Dialog_EventRefreshInformation
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| 68 | at MENUEVENT.RefreshItemFromCX, dw Dialog_EventRefreshItemFromCX
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| 69 | iend
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| 70 |
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| 71 |
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| 72 | ;--------------------------------------------------------------------
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| 73 | ; ProcessMessageScrollingKeysFromAX
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| 74 | ; Parameters
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| 75 | ; AL: ASCII character
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| 76 | ; AH: BIOS scan code
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| 77 | ; SS:BP: Ptr to DIALOG
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| 78 | ; Returns:
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| 79 | ; Nothing
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| 80 | ; Corrupts registers:
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| 81 | ; BX, CX, DX, SI, DI
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| 82 | ;--------------------------------------------------------------------
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| 83 | ALIGN JUMP_ALIGN
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| 84 | ProcessMessageScrollingKeysFromAX:
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| 85 | cmp ah, MENU_KEY_UP
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| 86 | je SHORT .DecrementLines
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| 87 | cmp ah, MENU_KEY_DOWN
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| 88 | je SHORT .IncrementLines
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| 89 | jmp MenuLoop_ProcessScrollingKeysFromAX
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| 90 |
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| 91 | ALIGN JUMP_ALIGN
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| 92 | .DecrementLines:
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| 93 | cmp WORD [bp+MENU.wHighlightedItem], BYTE 0
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| 94 | je SHORT .AlreadyAtTheTopOrBottom
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| 95 |
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| 96 | mov ax, [bp+MENU.wFirstVisibleItem]
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| 97 | mov [bp+MENU.wHighlightedItem], ax
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| 98 | mov ah, MENU_KEY_UP
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| 99 | jmp MenuLoop_ProcessScrollingKeysFromAX
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| 100 |
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| 101 | ALIGN JUMP_ALIGN
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| 102 | .IncrementLines:
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| 103 | mov ax, [bp+MENUINIT.wItems]
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| 104 | dec ax ; Last possible item to highlight
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| 105 | cmp [bp+MENU.wHighlightedItem], ax
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| 106 | jae SHORT .AlreadyAtTheTopOrBottom
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| 107 |
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| 108 | call MenuScrollbars_GetLastVisibleItemOnPageToAX
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| 109 | mov [bp+MENU.wHighlightedItem], ax
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| 110 | mov ah, MENU_KEY_DOWN
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| 111 | jmp MenuLoop_ProcessScrollingKeysFromAX
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| 112 |
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| 113 | ALIGN JUMP_ALIGN
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| 114 | .AlreadyAtTheTopOrBottom:
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| 115 | ret
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