source: xtideuniversalbios/trunk/Assembly_Library/Src/Menu/MenuText.asm@ 42

Last change on this file since 42 was 41, checked in by Tomi Tilli, 14 years ago

Initial commit for Assembly Library.
File size: 6.3 KB
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[41]1; File name : MenuText.asm
2; Project name : Assembly Library
3; Created date : 21.7.2010
4; Last update : 11.8.2010
5; Author : Tomi Tilli
6; Description : Functions for drawing menu texts by the user.
7
8; Section containing code
9SECTION .text
10
11;--------------------------------------------------------------------
12; MenuText_RefreshTitle
13; MenuText_RefreshInformation
14; Parameters
15; SS:BP: Ptr to MENU
16; Returns:
17; Nothing
18; Corrupts registers:
19; AX, BX, DX, SI, DI
20;--------------------------------------------------------------------
21ALIGN JUMP_ALIGN
22MenuText_RefreshTitle:
23 cmp BYTE [bp+MENUINIT.bTitleLines], 0
24 jz SHORT NothingToRefresh
25
26 mov si, ATTRIBUTE_CHARS.cTitle
27 call AdjustDisplayContextForDrawingTexts
28 call MenuLocation_GetTitleTextTopLeftCoordinatesToAX
29 CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
30 jmp MenuEvent_RefreshTitle
31
32ALIGN JUMP_ALIGN
33MenuText_RefreshInformation:
34 cmp BYTE [bp+MENUINIT.bInfoLines], 0
35 jz SHORT NothingToRefresh
36
37 mov si, ATTRIBUTE_CHARS.cInformation
38 call AdjustDisplayContextForDrawingTexts
39 call MenuLocation_GetInformationTextTopLeftCoordinatesToAX
40 CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
41 jmp MenuEvent_RefreshInformation
42
43
44;--------------------------------------------------------------------
45; MenuText_RefreshAllItems
46; Parameters
47; SS:BP: Ptr to MENU
48; Returns:
49; Nothing
50; Corrupts registers:
51; AX, BX, DX, SI, DI
52;--------------------------------------------------------------------
53ALIGN JUMP_ALIGN
54MenuText_RefreshAllItems:
55 push cx
56
57 call MenuScrollbars_GetActualVisibleItemsOnPageToCX
58 mov ax, [bp+MENU.wFirstVisibleItem]
59ALIGN JUMP_ALIGN
60.ItemRefreshLoop:
61 call MenuText_RefreshItemFromAX
62 inc ax
63 loop .ItemRefreshLoop
64
65 pop cx
66NothingToRefresh:
67 ret
68
69;--------------------------------------------------------------------
70; MenuText_RefreshItemFromAX
71; Parameters
72; AX: Item to refresh
73; SS:BP: Ptr to MENU
74; Returns:
75; Nothing
76; Corrupts registers:
77; BX, DX, SI, DI
78;--------------------------------------------------------------------
79ALIGN JUMP_ALIGN
80MenuText_RefreshItemFromAX:
81 push cx
82 mov cx, ax ; Backup item to CX
83
84 call MenuScrollbars_IsItemInCXonVisiblePage
85 jnc SHORT .InvalidItem
86 mov ax, cx
87 call MenuText_AdjustDisplayContextForDrawingItemFromAX
88 call MenuEvent_RefreshItemFromCX
89 call DrawScrollbarIfNecessary
90.InvalidItem:
91 xchg ax, cx ; Restore AX
92 pop cx
93 ret
94
95;--------------------------------------------------------------------
96; MenuText_AdjustDisplayContextForDrawingItemFromAX
97; Parameters
98; AX: Item to refresh
99; SS:BP: Ptr to MENU
100; Returns:
101; CX: Item to refresh
102; Corrupts registers:
103; AX, SI, DI
104;--------------------------------------------------------------------
105ALIGN JUMP_ALIGN
106MenuText_AdjustDisplayContextForDrawingItemFromAX:
107 mov cx, ax
108 call MenuLocation_GetTextCoordinatesToAXforItemInAX
109 CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
110 call .GetItemTextAttributeTypeToSIforItemInCX
111 jmp SHORT AdjustDisplayContextForDrawingTexts
112
113;--------------------------------------------------------------------
114; .GetItemTextAttributeTypeToSIforItemInCX
115; Parameters
116; CX: Item to refresh
117; SS:BP: Ptr to MENU
118; Returns:
119; SI: Text attribute type (ATTRIBUTE_CHARS)
120; Corrupts registers:
121; Nothing
122;--------------------------------------------------------------------
123ALIGN JUMP_ALIGN
124.GetItemTextAttributeTypeToSIforItemInCX:
125 mov si, ATTRIBUTE_CHARS.cItem
126 test BYTE [bp+MENU.bFlags], FLG_MENU_NOHIGHLIGHT
127 jnz SHORT .ReturnAttributeTypeInSI
128 cmp cx, [bp+MENU.wHighlightedItem]
129 jne SHORT .ReturnAttributeTypeInSI
130 sub si, BYTE ATTRIBUTE_CHARS.cItem - ATTRIBUTE_CHARS.cHighlightedItem
131ALIGN JUMP_ALIGN, ret
132.ReturnAttributeTypeInSI:
133 ret
134
135
136;--------------------------------------------------------------------
137; DrawScrollbarIfNecessary
138; Parameters
139; CX: Item to refresh
140; SS:BP: Ptr to MENU
141; Returns:
142; Nothing
143; Corrupts registers:
144; AX, DX, SI, DI
145;--------------------------------------------------------------------
146ALIGN JUMP_ALIGN
147DrawScrollbarIfNecessary:
148 push cx
149 call .DrawSpacesBeforeScrollbarCharacter
150 call MenuScrollbars_AreScrollbarsNeeded
151 pop cx
152 jc SHORT .DrawScrollbarCharacter
153 ret
154
155;--------------------------------------------------------------------
156; .DrawSpacesBeforeScrollbarCharacter
157; Parameters
158; CX: Item to refresh
159; SS:BP: Ptr to MENU
160; Returns:
161; Nothing
162; Corrupts registers:
163; AX, CX, DX, DI
164;--------------------------------------------------------------------
165ALIGN JUMP_ALIGN
166.DrawSpacesBeforeScrollbarCharacter:
167 CALL_DISPLAY_LIBRARY GetSoftwareCoordinatesToAX
168 xchg dx, ax ; Current coordinates to DX
169 mov ax, cx
170 call MenuLocation_GetScrollbarCoordinatesToAXforItemInAX
171 sub al, dl
172 sub al, MENU_TEXT_COLUMN_OFFSET/2
173
174 eMOVZX cx, al
175 jcxz .NoSpacesNeeded
176 mov al, ' '
177 CALL_DISPLAY_LIBRARY PrintRepeatedCharacterFromALwithCountInCX
178ALIGN JUMP_ALIGN, ret
179.NoSpacesNeeded:
180 ret
181
182;--------------------------------------------------------------------
183; .DrawScrollbarCharacter
184; Parameters
185; CX: Item to refresh
186; SS:BP: Ptr to MENU
187; Returns:
188; Nothing
189; Corrupts registers:
190; AX, DX, SI, DI
191;--------------------------------------------------------------------
192ALIGN JUMP_ALIGN
193.DrawScrollbarCharacter:
194 push cx
195
196 mov si, ATTRIBUTE_CHARS.cBordersAndBackground
197 call MenuAttribute_SetToDisplayContextFromTypeInSI
198
199 mov ax, cx
200 call MenuLocation_GetScrollbarCoordinatesToAXforItemInAX
201 CALL_DISPLAY_LIBRARY SetCursorCoordinatesFromAX
202
203 mov di, cx
204 sub di, [bp+MENU.wFirstVisibleItem] ; Item to line
205 call MenuScrollbars_GetScrollCharacterToALForLineInDI
206 CALL_DISPLAY_LIBRARY PrintCharacterFromAL
207
208 pop cx
209 ret
210
211
212;--------------------------------------------------------------------
213; AdjustDisplayContextForDrawingTexts
214; Parameters
215; SI: Attribute type (from ATTRIBUTE_CHARS)
216; SS:BP: Ptr to MENU
217; Returns:
218; Nothing
219; Corrupts registers:
220; AX, SI, DI
221;--------------------------------------------------------------------
222ALIGN JUMP_ALIGN
223AdjustDisplayContextForDrawingTexts:
224 mov ax, MenuCharOut_MenuTextTeletypeOutputWithAttribute
225 CALL_DISPLAY_LIBRARY SetCharacterOutputFunctionFromAX
226
227 mov ax, bp
228 CALL_DISPLAY_LIBRARY SetCharacterOutputParameterFromAX
229
230 jmp MenuAttribute_SetToDisplayContextFromTypeInSI
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