[41] | 1 | ; Project name : Assembly Library |
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| 2 | ; Description : Functions for calculation menu window dimensions. |
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| 3 | |
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| 4 | ; Section containing code |
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| 5 | SECTION .text |
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| 6 | |
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| 7 | ;-------------------------------------------------------------------- |
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| 8 | ; MenuLocation_GetTitleTextTopLeftCoordinatesToAX |
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| 9 | ; MenuLocation_GetInformationTextTopLeftCoordinatesToAX |
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| 10 | ; Parameters |
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| 11 | ; SS:BP: Ptr to MENU |
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| 12 | ; Returns: |
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| 13 | ; AL: Column (X) |
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| 14 | ; AH: Row (Y) |
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| 15 | ; Corrupts registers: |
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| 16 | ; Nothing |
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| 17 | ;-------------------------------------------------------------------- |
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| 18 | ALIGN JUMP_ALIGN |
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| 19 | MenuLocation_GetTitleTextTopLeftCoordinatesToAX: |
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| 20 | mov ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET |
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| 21 | jmp SHORT MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
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| 22 | |
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| 23 | ALIGN JUMP_ALIGN |
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| 24 | MenuLocation_GetInformationTextTopLeftCoordinatesToAX: |
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| 25 | mov ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET |
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| 26 | jmp SHORT AddInformationBordersTopLeftCoordinatesToAX |
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| 27 | |
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| 28 | |
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| 29 | ;-------------------------------------------------------------------- |
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| 30 | ; MenuLocation_GetTextCoordinatesToAXforItemInAX |
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| 31 | ; Parameters |
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| 32 | ; AX: Item index |
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| 33 | ; SS:BP: Ptr to MENU |
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| 34 | ; Returns: |
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| 35 | ; AL: Column (X) |
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| 36 | ; AH: Row (Y) |
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| 37 | ; Corrupts registers: |
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| 38 | ; Nothing |
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| 39 | ;-------------------------------------------------------------------- |
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| 40 | ALIGN JUMP_ALIGN |
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| 41 | MenuLocation_GetTextCoordinatesToAXforItemInAX: |
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| 42 | sub ax, [bp+MENU.wFirstVisibleItem] ; Item to line |
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| 43 | xchg al, ah ; Line to AH, clear AL |
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| 44 | add ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET |
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| 45 | jmp SHORT AddItemBordersTopLeftCoordinatesToAX |
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| 46 | |
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| 47 | |
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| 48 | ;-------------------------------------------------------------------- |
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| 49 | ; MenuLocation_GetTitleBordersTopLeftCoordinatesToAX |
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| 50 | ; MenuLocation_GetItemBordersTopLeftCoordinatesToAX |
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| 51 | ; MenuLocation_GetBottomBordersTopLeftCoordinatesToAX |
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| 52 | ; Parameters |
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| 53 | ; SS:BP: Ptr to MENU |
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| 54 | ; Returns: |
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| 55 | ; AL: Column (X) |
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| 56 | ; AH: Row (Y) |
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| 57 | ; Corrupts registers: |
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| 58 | ; Nothing |
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| 59 | ;-------------------------------------------------------------------- |
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| 60 | ALIGN JUMP_ALIGN |
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| 61 | MenuLocation_GetTitleBordersTopLeftCoordinatesToAX: |
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| 62 | xor ax, ax |
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| 63 | jmp SHORT MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
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| 64 | |
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| 65 | ALIGN JUMP_ALIGN |
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| 66 | MenuLocation_GetItemBordersTopLeftCoordinatesToAX: |
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| 67 | xor ax, ax |
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| 68 | jmp SHORT AddItemBordersTopLeftCoordinatesToAX |
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| 69 | |
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| 70 | ALIGN JUMP_ALIGN |
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| 71 | MenuLocation_GetBottomBordersTopLeftCoordinatesToAX: |
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| 72 | xor ax, ax |
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[104] | 73 | ; Fall to .AddBottomBordersTopLeftCoordinatesToAX |
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[41] | 74 | |
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| 75 | ;-------------------------------------------------------------------- |
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[104] | 76 | ; .AddBottomBordersTopLeftCoordinatesToAX |
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[41] | 77 | ; AddInformationBordersTopLeftCoordinatesToAX |
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| 78 | ; AddItemBordersTopLeftCoordinatesToAX |
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| 79 | ; MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
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| 80 | ; Parameters |
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| 81 | ; AX: Zero of offset |
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| 82 | ; SS:BP: Ptr to MENU |
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| 83 | ; Returns: |
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| 84 | ; AL: Column (X) |
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| 85 | ; AH: Row (Y) |
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| 86 | ; Corrupts registers: |
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| 87 | ; Nothing |
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| 88 | ;-------------------------------------------------------------------- |
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[104] | 89 | .AddBottomBordersTopLeftCoordinatesToAX: |
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[41] | 90 | stc ; Compensate for Information top border |
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| 91 | adc ah, [bp+MENUINIT.bInfoLines] |
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| 92 | ALIGN JUMP_ALIGN |
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| 93 | AddInformationBordersTopLeftCoordinatesToAX: |
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| 94 | push cx |
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| 95 | call MenuScrollbars_GetMaxVisibleItemsOnPageToCX |
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| 96 | inc cx ; Compensate for Items top border |
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| 97 | add ah, cl |
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| 98 | pop cx |
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| 99 | ALIGN JUMP_ALIGN |
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| 100 | AddItemBordersTopLeftCoordinatesToAX: |
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| 101 | stc ; Compensate for Title top border |
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| 102 | adc ah, [bp+MENUINIT.bTitleLines] |
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| 103 | ALIGN JUMP_ALIGN |
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| 104 | MenuLocation_AddTitleBordersTopLeftCoordinatesToAX: |
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| 105 | push di |
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| 106 | push ax |
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| 107 | CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH |
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| 108 | sub al, [bp+MENUINIT.bWidth] |
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| 109 | sub ah, [bp+MENUINIT.bHeight] |
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| 110 | shr al, 1 |
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| 111 | shr ah, 1 |
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| 112 | pop di ; Old AX to DI |
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| 113 | add ax, di ; Add old AX to menu top left coordinates |
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| 114 | pop di |
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| 115 | ret |
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| 116 | |
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| 117 | |
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| 118 | ;-------------------------------------------------------------------- |
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| 119 | ; MenuLocation_GetMaxTextLineLengthToAX |
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| 120 | ; Parameters |
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| 121 | ; SS:BP: Ptr to MENU |
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| 122 | ; Returns: |
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| 123 | ; AX: Maximum text line length in characters |
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| 124 | ; Corrupts registers: |
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| 125 | ; Nothing |
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| 126 | ;-------------------------------------------------------------------- |
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| 127 | ALIGN JUMP_ALIGN |
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| 128 | MenuLocation_GetMaxTextLineLengthToAX: |
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| 129 | eMOVZX ax, BYTE [bp+MENUINIT.bWidth] |
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| 130 | sub ax, BYTE MENU_HORIZONTAL_BORDER_LINES + MENU_TEXT_COLUMN_OFFSET |
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| 131 | ret |
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