| [41] | 1 | ; File name : MenuText.asm
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| 2 | ; Project name : Assembly Library
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| 3 | ; Created date : 21.7.2010
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| [45] | 4 | ; Last update : 28.9.2010
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| [41] | 5 | ; Author : Tomi Tilli
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| 6 | ; Description : Functions for drawing menu texts by the user.
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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 | ; MenuText_RefreshTitle
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| 13 | ; MenuText_RefreshInformation
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| 14 | ; Parameters
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| 15 | ; SS:BP: Ptr to 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, DX, SI, DI
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| 20 | ;--------------------------------------------------------------------
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| 21 | ALIGN JUMP_ALIGN
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| 22 | MenuText_RefreshTitle:
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| 23 | cmp BYTE [bp+MENUINIT.bTitleLines], 0
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| 24 | jz SHORT NothingToRefresh
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| 25 |
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| 26 | mov si, ATTRIBUTE_CHARS.cTitle
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| 27 | call AdjustDisplayContextForDrawingTexts
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| 28 | call MenuLocation_GetTitleTextTopLeftCoordinatesToAX
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| 29 | CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
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| 30 | jmp MenuEvent_RefreshTitle
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| 31 |
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| 32 | ALIGN JUMP_ALIGN
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| 33 | MenuText_RefreshInformation:
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| 34 | cmp BYTE [bp+MENUINIT.bInfoLines], 0
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| 35 | jz SHORT NothingToRefresh
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| 36 |
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| 37 | mov si, ATTRIBUTE_CHARS.cInformation
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| 38 | call AdjustDisplayContextForDrawingTexts
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| 39 | call MenuLocation_GetInformationTextTopLeftCoordinatesToAX
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| 40 | CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
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| 41 | jmp MenuEvent_RefreshInformation
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| 42 |
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| 43 |
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| 44 | ;--------------------------------------------------------------------
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| 45 | ; MenuText_RefreshAllItems
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| 46 | ; Parameters
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| 47 | ; SS:BP: Ptr to MENU
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| 48 | ; Returns:
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| 49 | ; Nothing
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| 50 | ; Corrupts registers:
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| 51 | ; AX, BX, DX, SI, DI
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| 52 | ;--------------------------------------------------------------------
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| 53 | ALIGN JUMP_ALIGN
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| 54 | MenuText_RefreshAllItems:
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| 55 | push cx
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| 56 |
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| 57 | call MenuScrollbars_GetActualVisibleItemsOnPageToCX
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| 58 | mov ax, [bp+MENU.wFirstVisibleItem]
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| 59 | ALIGN JUMP_ALIGN
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| 60 | .ItemRefreshLoop:
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| 61 | call MenuText_RefreshItemFromAX
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| 62 | inc ax
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| 63 | loop .ItemRefreshLoop
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| 64 |
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| 65 | pop cx
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| 66 | NothingToRefresh:
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| 67 | ret
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| 68 |
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| 69 | ;--------------------------------------------------------------------
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| 70 | ; MenuText_RefreshItemFromAX
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| 71 | ; Parameters
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| 72 | ; AX: Item to refresh
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| 73 | ; SS:BP: Ptr to MENU
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| 74 | ; Returns:
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| 75 | ; Nothing
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| 76 | ; Corrupts registers:
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| 77 | ; BX, DX, SI, DI
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| 78 | ;--------------------------------------------------------------------
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| 79 | ALIGN JUMP_ALIGN
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| 80 | MenuText_RefreshItemFromAX:
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| 81 | push cx
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| 82 | mov cx, ax ; Backup item to CX
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| 83 |
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| 84 | call MenuScrollbars_IsItemInCXonVisiblePage
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| 85 | jnc SHORT .InvalidItem
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| 86 | mov ax, cx
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| 87 | call MenuText_AdjustDisplayContextForDrawingItemFromAX
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| 88 | call MenuEvent_RefreshItemFromCX
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| 89 | call DrawScrollbarIfNecessary
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| 90 | .InvalidItem:
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| 91 | xchg ax, cx ; Restore AX
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| 92 | pop cx
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| 93 | ret
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| 94 |
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| 95 | ;--------------------------------------------------------------------
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| 96 | ; MenuText_AdjustDisplayContextForDrawingItemFromAX
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| 97 | ; Parameters
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| 98 | ; AX: Item to refresh
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| 99 | ; SS:BP: Ptr to MENU
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| 100 | ; Returns:
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| 101 | ; CX: Item to refresh
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| 102 | ; Corrupts registers:
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| 103 | ; AX, SI, DI
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| 104 | ;--------------------------------------------------------------------
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| 105 | ALIGN JUMP_ALIGN
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| 106 | MenuText_AdjustDisplayContextForDrawingItemFromAX:
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| 107 | mov cx, ax
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| 108 | call MenuLocation_GetTextCoordinatesToAXforItemInAX
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| 109 | CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
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| 110 | call .GetItemTextAttributeTypeToSIforItemInCX
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| 111 | jmp SHORT AdjustDisplayContextForDrawingTexts
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| 112 |
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| 113 | ;--------------------------------------------------------------------
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| 114 | ; .GetItemTextAttributeTypeToSIforItemInCX
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| 115 | ; Parameters
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| 116 | ; CX: Item to refresh
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| 117 | ; SS:BP: Ptr to MENU
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| 118 | ; Returns:
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| 119 | ; SI: Text attribute type (ATTRIBUTE_CHARS)
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| 120 | ; Corrupts registers:
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| 121 | ; Nothing
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| 122 | ;--------------------------------------------------------------------
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| 123 | ALIGN JUMP_ALIGN
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| 124 | .GetItemTextAttributeTypeToSIforItemInCX:
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| 125 | mov si, ATTRIBUTE_CHARS.cItem
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| 126 | test BYTE [bp+MENU.bFlags], FLG_MENU_NOHIGHLIGHT
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| 127 | jnz SHORT .ReturnAttributeTypeInSI
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| 128 | cmp cx, [bp+MENU.wHighlightedItem]
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| 129 | jne SHORT .ReturnAttributeTypeInSI
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| 130 | sub si, BYTE ATTRIBUTE_CHARS.cItem - ATTRIBUTE_CHARS.cHighlightedItem
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| 131 | ALIGN JUMP_ALIGN, ret
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| 132 | .ReturnAttributeTypeInSI:
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| 133 | ret
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| 134 |
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| 135 |
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| 136 | ;--------------------------------------------------------------------
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| 137 | ; DrawScrollbarIfNecessary
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| 138 | ; Parameters
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| 139 | ; CX: Item to refresh
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| 140 | ; SS:BP: Ptr to MENU
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| 141 | ; Returns:
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| 142 | ; Nothing
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| 143 | ; Corrupts registers:
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| 144 | ; AX, DX, SI, DI
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| 145 | ;--------------------------------------------------------------------
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| 146 | ALIGN JUMP_ALIGN
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| 147 | DrawScrollbarIfNecessary:
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| 148 | push cx
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| 149 | call .DrawSpacesBeforeScrollbarCharacter
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| 150 | call MenuScrollbars_AreScrollbarsNeeded
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| 151 | pop cx
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| 152 | jc SHORT .DrawScrollbarCharacter
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| 153 | ret
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| 154 |
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| 155 | ;--------------------------------------------------------------------
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| 156 | ; .DrawSpacesBeforeScrollbarCharacter
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| 157 | ; Parameters
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| 158 | ; CX: Item to refresh
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| 159 | ; SS:BP: Ptr to MENU
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| 160 | ; Returns:
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| 161 | ; Nothing
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| 162 | ; Corrupts registers:
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| 163 | ; AX, CX, DX, DI
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| 164 | ;--------------------------------------------------------------------
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| 165 | ALIGN JUMP_ALIGN
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| 166 | .DrawSpacesBeforeScrollbarCharacter:
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| 167 | CALL_DISPLAY_LIBRARY GetSoftwareCoordinatesToAX
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| 168 | xchg dx, ax ; Current coordinates to DX
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| 169 | mov ax, cx
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| 170 | call MenuLocation_GetScrollbarCoordinatesToAXforItemInAX
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| 171 | sub al, dl
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| 172 | sub al, MENU_TEXT_COLUMN_OFFSET/2
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| 173 |
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| 174 | eMOVZX cx, al
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| 175 | jcxz .NoSpacesNeeded
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| 176 | mov al, ' '
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| 177 | CALL_DISPLAY_LIBRARY PrintRepeatedCharacterFromALwithCountInCX
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| 178 | ALIGN JUMP_ALIGN, ret
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| 179 | .NoSpacesNeeded:
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| 180 | ret
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| 181 |
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| 182 | ;--------------------------------------------------------------------
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| 183 | ; .DrawScrollbarCharacter
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| 184 | ; Parameters
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| 185 | ; CX: Item to refresh
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| 186 | ; SS:BP: Ptr to MENU
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| 187 | ; Returns:
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| 188 | ; Nothing
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| 189 | ; Corrupts registers:
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| 190 | ; AX, DX, SI, DI
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| 191 | ;--------------------------------------------------------------------
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| 192 | ALIGN JUMP_ALIGN
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| 193 | .DrawScrollbarCharacter:
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| 194 | push cx
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| 195 |
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| 196 | mov si, ATTRIBUTE_CHARS.cBordersAndBackground
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| 197 | call MenuAttribute_SetToDisplayContextFromTypeInSI
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| 198 |
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| 199 | mov ax, cx
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| 200 | call MenuLocation_GetScrollbarCoordinatesToAXforItemInAX
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| 201 | CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
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| 202 |
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| 203 | mov di, cx
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| 204 | sub di, [bp+MENU.wFirstVisibleItem] ; Item to line
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| 205 | call MenuScrollbars_GetScrollCharacterToALForLineInDI
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| 206 | CALL_DISPLAY_LIBRARY PrintCharacterFromAL
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| 207 |
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| 208 | pop cx
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| 209 | ret
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| 210 |
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| 211 |
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| 212 | ;--------------------------------------------------------------------
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| 213 | ; AdjustDisplayContextForDrawingTexts
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| 214 | ; Parameters
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| 215 | ; SI: Attribute type (from ATTRIBUTE_CHARS)
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| 216 | ; SS:BP: Ptr to MENU
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| 217 | ; Returns:
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| 218 | ; Nothing
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| 219 | ; Corrupts registers:
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| [45] | 220 | ; AX, BX, SI, DI
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| [41] | 221 | ;--------------------------------------------------------------------
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| 222 | ALIGN JUMP_ALIGN
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| 223 | AdjustDisplayContextForDrawingTexts:
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| [45] | 224 | mov bl, ATTRIBUTES_ARE_USED
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| [41] | 225 | mov ax, MenuCharOut_MenuTextTeletypeOutputWithAttribute
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| [45] | 226 | CALL_DISPLAY_LIBRARY SetCharOutputFunctionFromAXwithAttribFlagInBL
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| [41] | 227 |
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| 228 | mov ax, bp
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| 229 | CALL_DISPLAY_LIBRARY SetCharacterOutputParameterFromAX
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| 230 |
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| 231 | jmp MenuAttribute_SetToDisplayContextFromTypeInSI
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