source: xtideuniversalbios/trunk/Assembly_Library/Src/Menu/MenuLocation.asm @ 369

Last change on this file since 369 was 369, checked in by gregli@…, 12 years ago

Removed align directives for initalization code and added define for align in boot-time calls to the assembly library (defaulting to 1), resulting in a significant savings for the AT and 386 builds. Fixed a bug with switch command line handling in the serial server. Put in CR characters in licesnse.txt, so that it properly displays on Windows. In the configurator, added default values for user supplied CHS and LBA values, defaulting to values within range when those features are enabled. Updated the copyright message in the configurator as the literal word Copyright is important.
File size: 3.8 KB
RevLine 
[41]1; Project name  :   Assembly Library
2; Description   :   Functions for calculation menu window dimensions.
3
4; Section containing code
5SECTION .text
6
7;--------------------------------------------------------------------
8; MenuLocation_GetTextCoordinatesToAXforItemInAX
9;   Parameters
10;       AX:     Item index
11;       SS:BP:  Ptr to MENU
12;   Returns:
13;       AL:     Column (X)
14;       AH:     Row (Y)
15;   Corrupts registers:
16;       Nothing
17;--------------------------------------------------------------------
[369]18ALIGN MENU_JUMP_ALIGN
[41]19MenuLocation_GetTextCoordinatesToAXforItemInAX:
20    sub     ax, [bp+MENU.wFirstVisibleItem]     ; Item to line
21    xchg    al, ah                              ; Line to AH, clear AL
22    add     ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET
[181]23    SKIP2B  f   ; cmp ax, <next instruction>
24    ; Fall to MenuLocation_GetItemBordersTopLeftCoordinatesToAX
[41]25
26;--------------------------------------------------------------------
[181]27; MenuLocation_GetItemBordersTopLeftCoordinatesToAX
28; MenuLocation_GetTitleTextTopLeftCoordinatesToAX
[41]29; MenuLocation_GetTitleBordersTopLeftCoordinatesToAX
[181]30; MenuLocation_GetInformationTextTopLeftCoordinatesToAX
[41]31; MenuLocation_GetBottomBordersTopLeftCoordinatesToAX
32;   Parameters
33;       SS:BP:  Ptr to MENU
34;   Returns:
35;       AL:     Column (X)
36;       AH:     Row (Y)
37;   Corrupts registers:
38;       Nothing
39;--------------------------------------------------------------------
[181]40MenuLocation_GetItemBordersTopLeftCoordinatesToAX:
41    xor     ax, ax
42    jmp     SHORT AddItemBordersTopLeftCoordinatesToAX
43
[369]44ALIGN MENU_JUMP_ALIGN
[181]45MenuLocation_GetTitleTextTopLeftCoordinatesToAX:
46    mov     ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET
47    SKIP2B  f   ; cmp ax, <next instruction>
[41]48MenuLocation_GetTitleBordersTopLeftCoordinatesToAX:
49    xor     ax, ax
50    jmp     SHORT MenuLocation_AddTitleBordersTopLeftCoordinatesToAX
51
[369]52ALIGN MENU_JUMP_ALIGN
[181]53MenuLocation_GetInformationTextTopLeftCoordinatesToAX:
54    mov     ax, (MENU_TEXT_ROW_OFFSET<<8) | MENU_TEXT_COLUMN_OFFSET
55    jmp     SHORT AddInformationBordersTopLeftCoordinatesToAX
[41]56
[369]57ALIGN MENU_JUMP_ALIGN
[41]58MenuLocation_GetBottomBordersTopLeftCoordinatesToAX:
59    xor     ax, ax
[104]60    ; Fall to .AddBottomBordersTopLeftCoordinatesToAX
[41]61
62;--------------------------------------------------------------------
[104]63; .AddBottomBordersTopLeftCoordinatesToAX
[41]64; AddInformationBordersTopLeftCoordinatesToAX
65; AddItemBordersTopLeftCoordinatesToAX
66; MenuLocation_AddTitleBordersTopLeftCoordinatesToAX
67;   Parameters
68;       AX:     Zero of offset
69;       SS:BP:  Ptr to MENU
70;   Returns:
71;       AL:     Column (X)
72;       AH:     Row (Y)
73;   Corrupts registers:
74;       Nothing
75;--------------------------------------------------------------------
[104]76.AddBottomBordersTopLeftCoordinatesToAX:
[41]77    stc                         ; Compensate for Information top border
78    adc     ah, [bp+MENUINIT.bInfoLines]
[369]79ALIGN MENU_JUMP_ALIGN
[41]80AddInformationBordersTopLeftCoordinatesToAX:
81    push    cx
82    call    MenuScrollbars_GetMaxVisibleItemsOnPageToCX
83    inc     cx                  ; Compensate for Items top border
84    add     ah, cl
85    pop     cx
[369]86ALIGN MENU_JUMP_ALIGN
[41]87AddItemBordersTopLeftCoordinatesToAX:
88    stc                         ; Compensate for Title top border
89    adc     ah, [bp+MENUINIT.bTitleLines]
[369]90ALIGN MENU_JUMP_ALIGN
[41]91MenuLocation_AddTitleBordersTopLeftCoordinatesToAX:
92    push    di
93    push    ax
94    CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH
95    sub     al, [bp+MENUINIT.bWidth]
96    sub     ah, [bp+MENUINIT.bHeight]
97    shr     al, 1
98    shr     ah, 1
99    pop     di                  ; Old AX to DI
100    add     ax, di              ; Add old AX to menu top left coordinates
101    pop     di
102    ret
103
104
105;--------------------------------------------------------------------
106; MenuLocation_GetMaxTextLineLengthToAX
107;   Parameters
108;       SS:BP:  Ptr to MENU
109;   Returns:
110;       AX:     Maximum text line length in characters
111;   Corrupts registers:
112;       Nothing
113;--------------------------------------------------------------------
[369]114ALIGN MENU_JUMP_ALIGN
[41]115MenuLocation_GetMaxTextLineLengthToAX:
[293]116    eMOVZX  ax, [bp+MENUINIT.bWidth]
[41]117    sub     ax, BYTE MENU_HORIZONTAL_BORDER_LINES + MENU_TEXT_COLUMN_OFFSET
118    ret
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