| 1 | ; File name : MenuCharOut.asm
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| 2 | ; Project name : Assembly Library
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| 3 | ; Created date : 15.7.2010
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| 4 | ; Last update : 4.8.2010
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| 5 | ; Author : Tomi Tilli
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| 6 | ; Description : Character out function for printing withing menu window.
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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 | ; MenuCharOut_MenuBorderTeletypeOutputWithAttribute
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| 13 | ; Parameters:
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| 14 | ; AL: Character to output
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| 15 | ; AH: Attribute to output
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| 16 | ; DS: BDA segment (zero)
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| 17 | ; ES:DI: Ptr to video memory where to output
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| 18 | ; Returns:
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| 19 | ; DI: Incremented for next character
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| 20 | ; Corrupts registers:
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| 21 | ; AX, DX
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| 22 | ;--------------------------------------------------------------------
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| 23 | ALIGN JUMP_ALIGN
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| 24 | MenuCharOut_MenuBorderTeletypeOutputWithAttribute:
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| 25 | cmp al, CR ; Carriage return?
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| 26 | je SHORT .PrintCRandAdjustColumnToMenuBorders
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| 27 | jmp DisplayCharOut_TeletypeOutputWithAttribute
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| 28 |
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| 29 | ALIGN JUMP_ALIGN
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| 30 | .PrintCRandAdjustColumnToMenuBorders:
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| 31 | call DisplayCharOut_TeletypeOutputWithAttribute
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| 32 | xor ax, ax ; No offset, cursor to start of border
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| 33 | jmp SHORT SetCursorToNextMenuLine
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| 34 |
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| 35 |
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| 36 | ;--------------------------------------------------------------------
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| 37 | ; MenuCharOut_MenuTextTeletypeOutputWithAttribute
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| 38 | ; Parameters:
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| 39 | ; AL: Character to output
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| 40 | ; AH: Attribute to output
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| 41 | ; DS: BDA segment (zero)
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| 42 | ; ES:DI: Ptr to video memory where to output
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| 43 | ; Returns:
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| 44 | ; DI: Incremented for next character
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| 45 | ; Corrupts registers:
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| 46 | ; AX, DX
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| 47 | ;--------------------------------------------------------------------
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| 48 | ALIGN JUMP_ALIGN
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| 49 | MenuCharOut_MenuTextTeletypeOutputWithAttribute:
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| 50 | cmp al, CR ; Carriage return?
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| 51 | je SHORT .PrintCRandAdjustColumnToMenuText
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| 52 | jmp DisplayCharOut_TeletypeOutputWithAttribute
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| 53 |
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| 54 | ALIGN JUMP_ALIGN
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| 55 | .PrintCRandAdjustColumnToMenuText:
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| 56 | call DisplayCharOut_TeletypeOutputWithAttribute
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| 57 | mov al, MENU_TEXT_COLUMN_OFFSET ; Offset to start of text
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| 58 | ; Fall to SetCursorToNextMenuLine
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| 59 |
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| 60 | ;--------------------------------------------------------------------
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| 61 | ; SetCursorToNextMenuLine
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| 62 | ; Parameters:
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| 63 | ; AL: Column offset from start of borders
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| 64 | ; DS: BDA segment (zero)
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| 65 | ; ES:DI: Ptr to video memory where to output
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| 66 | ; Returns:
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| 67 | ; DI: Adjusted for next line
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| 68 | ; Corrupts registers:
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| 69 | ; AX, DX
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| 70 | ;--------------------------------------------------------------------
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| 71 | ALIGN JUMP_ALIGN
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| 72 | SetCursorToNextMenuLine:
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| 73 | push bp
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| 74 |
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| 75 | mov bp, [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.wCharOutParam]
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| 76 | call .AddCoordinatesForNewBorderLineToAX
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| 77 | call DisplayCursor_SetCoordinatesFromAX ; Updates DI
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| 78 |
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| 79 | pop bp
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| 80 | ret
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| 81 |
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| 82 | ;--------------------------------------------------------------------
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| 83 | ; .AddCoordinatesForNewBorderLineToAX
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| 84 | ; Parameters:
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| 85 | ; AL: Column offset from start of borders
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| 86 | ; DS: BDA segment (zero)
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| 87 | ; SS:BP: Ptr to MENU
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| 88 | ; Returns:
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| 89 | ; AX: Coordinates for new line
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| 90 | ; Corrupts registers:
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| 91 | ; DX
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| 92 | ;--------------------------------------------------------------------
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| 93 | ALIGN JUMP_ALIGN
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| 94 | .AddCoordinatesForNewBorderLineToAX:
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| 95 | call MenuLocation_AddTitleBordersTopLeftCoordinatesToAX
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| 96 | push ax
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| 97 | call DisplayCursor_GetSoftwareCoordinatesToAX
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| 98 | pop dx
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| 99 | mov al, dl ; Adjust column to borders
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| 100 | ret
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