[41] | 1 | ; File name : MenuLocation.asm |
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| 2 | ; Project name : Assembly Library |
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| 3 | ; Created date : 14.7.2010 |
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| 4 | ; Last update : 11.8.2010 |
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| 5 | ; Author : Tomi Tilli |
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| 6 | ; Description : Functions for calculation menu window dimensions. |
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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 | ; MenuLocation_GetScrollbarCoordinatesToAXforItemInAX |
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| 13 | ; Parameters |
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| 14 | ; AX: Item index |
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| 15 | ; SS:BP: Ptr to MENU |
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| 16 | ; Returns: |
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| 17 | ; AL: Column (X) |
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| 18 | ; AH: Row (Y) |
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| 19 | ; Corrupts registers: |
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| 20 | ; Nothing |
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| 21 | ;-------------------------------------------------------------------- |
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| 22 | ALIGN JUMP_ALIGN |
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| 23 | MenuLocation_GetScrollbarCoordinatesToAXforItemInAX: |
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| 24 | call MenuLocation_GetTextCoordinatesToAXforItemInAX |
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| 25 | add al, [bp+MENUINIT.bWidth] |
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| 26 | sub al, MENU_TEXT_COLUMN_OFFSET*2 |
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| 27 | ret |
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| 28 | |
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| 29 | |
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| 30 | ;-------------------------------------------------------------------- |
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| 31 | ; MenuLocation_GetTitleTextTopLeftCoordinatesToAX |
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| 32 | ; MenuLocation_GetInformationTextTopLeftCoordinatesToAX |
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| 33 | ; Parameters |
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| 34 | ; SS:BP: Ptr to MENU |
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| 35 | ; Returns: |
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| 36 | ; AL: Column (X) |
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| 37 | ; AH: Row (Y) |
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| 38 | ; Corrupts registers: |
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| 39 | ; Nothing |
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| 40 | ;-------------------------------------------------------------------- |
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| 41 | ALIGN JUMP_ALIGN |
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| 42 | MenuLocation_GetTitleTextTopLeftCoordinatesToAX: |
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| 43 | mov ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET |
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| 44 | jmp SHORT MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
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| 45 | |
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| 46 | ALIGN JUMP_ALIGN |
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| 47 | MenuLocation_GetInformationTextTopLeftCoordinatesToAX: |
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| 48 | mov ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET |
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| 49 | jmp SHORT AddInformationBordersTopLeftCoordinatesToAX |
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| 50 | |
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| 51 | |
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| 52 | ;-------------------------------------------------------------------- |
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| 53 | ; MenuLocation_GetTextCoordinatesToAXforItemInAX |
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| 54 | ; Parameters |
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| 55 | ; AX: Item index |
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| 56 | ; SS:BP: Ptr to MENU |
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| 57 | ; Returns: |
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| 58 | ; AL: Column (X) |
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| 59 | ; AH: Row (Y) |
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| 60 | ; Corrupts registers: |
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| 61 | ; Nothing |
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| 62 | ;-------------------------------------------------------------------- |
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| 63 | ALIGN JUMP_ALIGN |
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| 64 | MenuLocation_GetTextCoordinatesToAXforItemInAX: |
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| 65 | sub ax, [bp+MENU.wFirstVisibleItem] ; Item to line |
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| 66 | xchg al, ah ; Line to AH, clear AL |
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| 67 | add ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET |
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| 68 | jmp SHORT AddItemBordersTopLeftCoordinatesToAX |
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| 69 | |
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| 70 | |
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| 71 | ;-------------------------------------------------------------------- |
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| 72 | ; MenuLocation_GetTitleBordersTopLeftCoordinatesToAX |
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| 73 | ; MenuLocation_GetItemBordersTopLeftCoordinatesToAX |
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| 74 | ; MenuLocation_GetInformationBordersTopLeftCoordinatesToAX |
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| 75 | ; MenuLocation_GetBottomBordersTopLeftCoordinatesToAX |
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| 76 | ; Parameters |
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| 77 | ; SS:BP: Ptr to MENU |
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| 78 | ; Returns: |
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| 79 | ; AL: Column (X) |
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| 80 | ; AH: Row (Y) |
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| 81 | ; Corrupts registers: |
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| 82 | ; Nothing |
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| 83 | ;-------------------------------------------------------------------- |
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| 84 | ALIGN JUMP_ALIGN |
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| 85 | MenuLocation_GetTitleBordersTopLeftCoordinatesToAX: |
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| 86 | xor ax, ax |
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| 87 | jmp SHORT MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
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| 88 | |
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| 89 | ALIGN JUMP_ALIGN |
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| 90 | MenuLocation_GetItemBordersTopLeftCoordinatesToAX: |
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| 91 | xor ax, ax |
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| 92 | jmp SHORT AddItemBordersTopLeftCoordinatesToAX |
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| 93 | |
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| 94 | ALIGN JUMP_ALIGN |
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| 95 | MenuLocation_GetInformationBordersTopLeftCoordinatesToAX: |
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| 96 | xor ax, ax |
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| 97 | jmp SHORT AddInformationBordersTopLeftCoordinatesToAX |
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| 98 | |
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| 99 | ALIGN JUMP_ALIGN |
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| 100 | MenuLocation_GetBottomBordersTopLeftCoordinatesToAX: |
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| 101 | xor ax, ax |
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| 102 | ; Fall to AddBottomBordersTopLeftCoordinatesToAX |
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| 103 | |
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| 104 | ;-------------------------------------------------------------------- |
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| 105 | ; AddBottomBordersTopLeftCoordinatesToAX |
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| 106 | ; AddInformationBordersTopLeftCoordinatesToAX |
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| 107 | ; AddItemBordersTopLeftCoordinatesToAX |
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| 108 | ; MenuLocation_AddTitleBordersTopLeftCoordinatesToAX |
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| 109 | ; Parameters |
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| 110 | ; AX: Zero of offset |
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| 111 | ; SS:BP: Ptr to MENU |
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| 112 | ; Returns: |
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| 113 | ; AL: Column (X) |
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| 114 | ; AH: Row (Y) |
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| 115 | ; Corrupts registers: |
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| 116 | ; Nothing |
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| 117 | ;-------------------------------------------------------------------- |
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| 118 | ALIGN JUMP_ALIGN |
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| 119 | AddBottomBordersTopLeftCoordinatesToAX: |
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| 120 | stc ; Compensate for Information top border |
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| 121 | adc ah, [bp+MENUINIT.bInfoLines] |
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| 122 | ALIGN JUMP_ALIGN |
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| 123 | AddInformationBordersTopLeftCoordinatesToAX: |
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| 124 | push cx |
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| 125 | call MenuScrollbars_GetMaxVisibleItemsOnPageToCX |
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| 126 | inc cx ; Compensate for Items top border |
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| 127 | add ah, cl |
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| 128 | pop cx |
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| 129 | ALIGN JUMP_ALIGN |
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| 130 | AddItemBordersTopLeftCoordinatesToAX: |
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| 131 | stc ; Compensate for Title top border |
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| 132 | adc ah, [bp+MENUINIT.bTitleLines] |
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| 133 | ALIGN JUMP_ALIGN |
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| 134 | MenuLocation_AddTitleBordersTopLeftCoordinatesToAX: |
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| 135 | push di |
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| 136 | push ax |
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| 137 | CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH |
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| 138 | sub al, [bp+MENUINIT.bWidth] |
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| 139 | sub ah, [bp+MENUINIT.bHeight] |
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| 140 | shr al, 1 |
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| 141 | shr ah, 1 |
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| 142 | pop di ; Old AX to DI |
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| 143 | add ax, di ; Add old AX to menu top left coordinates |
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| 144 | pop di |
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| 145 | ret |
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| 146 | |
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| 147 | |
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| 148 | ;-------------------------------------------------------------------- |
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| 149 | ; MenuLocation_GetMaxTextLineLengthToAX |
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| 150 | ; Parameters |
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| 151 | ; SS:BP: Ptr to MENU |
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| 152 | ; Returns: |
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| 153 | ; AX: Maximum text line length in characters |
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| 154 | ; Corrupts registers: |
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| 155 | ; Nothing |
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| 156 | ;-------------------------------------------------------------------- |
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| 157 | ALIGN JUMP_ALIGN |
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| 158 | MenuLocation_GetMaxTextLineLengthToAX: |
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| 159 | eMOVZX ax, BYTE [bp+MENUINIT.bWidth] |
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| 160 | sub ax, BYTE MENU_HORIZONTAL_BORDER_LINES + MENU_TEXT_COLUMN_OFFSET |
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| 161 | ret |
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