source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Menus/BootMenu/BootMenuEvent.asm@ 624

Last change on this file since 624 was 599, checked in by Tomi Tilli, 6 years ago

Hotkey bar is now updated and drawn from system timer tick handler 1Ch. This gives much more responsive key input and makes possible to implement some simple detection animation to show that system has not frozen.

File size: 9.1 KB
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1; Project name : XTIDE Universal BIOS
2; Description : Boot Menu event handler for menu library callbacks.
3
4;
5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team.
7;
8; This program is free software; you can redistribute it and/or modify
9; it under the terms of the GNU General Public License as published by
10; the Free Software Foundation; either version 2 of the License, or
11; (at your option) any later version.
12;
13; This program is distributed in the hope that it will be useful,
14; but WITHOUT ANY WARRANTY; without even the implied warranty of
15; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16; GNU General Public License for more details.
17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
19
20; Section containing code
21SECTION .text
22
23;--------------------------------------------------------------------
24; GetMenuitemToDXforDriveInDL
25; Parameters:
26; DL: Drive number
27; Returns:
28; DX: Menuitem index (assuming drive is available)
29; Corrupts registers:
30; AX
31;--------------------------------------------------------------------
32GetMenuitemToDXforDriveInDL:
33 xor dh, dh ; Drive number now in DX
34 test dl, dl
35 jns SHORT .ReturnItemIndexInDX ; Return if floppy drive (HD bit not set)
36 call FloppyDrive_GetCountToAX
37 and dl, ~80h ; Clear HD bit
38 add dx, ax
39.ReturnItemIndexInDX:
40 ret
41
42
43;--------------------------------------------------------------------
44; BootMenuEvent_Handler
45; Common parameters for all events:
46; BX: Menu event (anything from MENUEVENT struct)
47; SS:BP: Menu library handle
48; Common return values for all events:
49; CF: Set if event processed
50; Cleared if event not processed
51; Corrupts registers:
52; All
53;--------------------------------------------------------------------
54BootMenuEvent_Handler:
55 LOAD_BDA_SEGMENT_TO es, di
56 call RamVars_GetSegmentToDS
57
58%ifdef MENUEVENT_INLINE_OFFSETS
59
60 add bx, FirstEvent
61 jmp bx
62
63.EventNotHandled:
64.DoNotSetDefaultMenuitem:
65 xor dx, dx ; Clear CF (and menuitem index for DoNotSetDefaultMenuitem)
66 ret
67
68MENUEVENT_InitializeMenuinitFromDSSI equ (EventInitializeMenuinitFromSSBP - FirstEvent)
69MENUEVENT_ExitMenu equ (BootMenuEvent_Completed - FirstEvent)
70MENUEVENT_ItemHighlightedFromCX equ (EventItemHighlightedFromCX - FirstEvent)
71MENUEVENT_KeyStrokeInAX equ (EventKeyStrokeInAX - FirstEvent)
72MENUEVENT_ItemSelectedFromCX equ (EventItemSelectedFromCX - FirstEvent)
73MENUEVENT_RefreshTitle equ (BootMenuPrint_TitleStrings - FirstEvent)
74MENUEVENT_RefreshInformation equ (BootMenuPrint_RefreshInformation - FirstEvent)
75MENUEVENT_RefreshItemFromCX equ (BootMenuPrint_RefreshItem - FirstEvent)
76;
77; Note that there is no entry for MENUEVENT_IdleProcessing. If MENUEVENT_IDLEPROCESSING_ENABLE is not %defined,
78; then the entry point will not be called (saving memory on this end and at the CALL point).
79;
80
81%else
82
83 cmp bx, BYTE MENUEVENT.RefreshItemFromCX ; Above last supported item?
84 ja SHORT .EventNotHandled
85 jmp [cs:bx+rgfnEventSpecificHandlers]
86
87.EventNotHandled:
88.DoNotSetDefaultMenuitem:
89 xor dx, dx ; Clear CF (and menuitem index for DoNotSetDefaultMenuitem)
90 ret
91
92rgfnEventSpecificHandlers:
93 dw EventInitializeMenuinitFromSSBP ; MENUEVENT.InitializeMenuinitFromDSSI
94 dw EventCompleted ; MENUEVENT.ExitMenu
95 dw EventNotHandled ; MENUEVENT.IdleProcessing
96 dw EventItemHighlightedFromCX ; MENUEVENT.ItemHighlightedFromCX
97
98 dw EventItemSelectedFromCX ; MENUEVENT.ItemSelectedFromCX
99 dw EventKeyStrokeInAX ; MENUEVENT.KeyStrokeInAX
100 dw BootMenuPrint_TitleStrings ; MENUEVENT.RefreshTitle
101 dw BootMenuPrint_RefreshInformation ; MENUEVENT.RefreshInformation
102 dw BootMenuPrint_RefreshItem ; MENUEVENT.RefreshItemFromCX
103
104%endif
105
106
107;--------------------------------------------------------------------
108; EventInitializeMenuinitFromSSBP
109; Parameters
110; DS: Ptr to RAMVARS
111; ES: Ptr to BDA (zero)
112; SS:BP: Ptr to MENUINIT struct to initialize
113; Returns:
114; CF: Set if event processed
115; Cleared if event not processed
116; Corrupts registers:
117; Does not matter
118;--------------------------------------------------------------------
119FirstEvent:
120EventInitializeMenuinitFromSSBP:
121 ; Store number of Menuitems
122 call RamVars_GetHardDiskCountFromBDAtoAX
123 xchg ax, cx
124 call FloppyDrive_GetCountToAX
125 add ax, cx
126 inc ax ; extra entry for ROM Boot item
127 mov [bp+MENUINIT.wItems], ax
128
129 ; Store menu size
130 mov WORD [bp+MENUINIT.wTitleAndInfoLines], BOOT_MENU_TITLE_AND_INFO_LINES
131 mov BYTE [bp+MENUINIT.bWidth], BOOT_MENU_WIDTH
132 add al, BOOT_MENU_HEIGHT_WITHOUT_ITEMS
133 xchg cx, ax
134 CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH
135 MIN_U ah, cl
136 mov [bp+MENUINIT.bHeight], ah
137
138 ; Store selection timeout
139 mov ax, [cs:ROMVARS.wBootTimeout]
140 CALL_MENU_LIBRARY StartSelectionTimeoutWithTicksInAX
141
142 ; Store default Menuitem (=default drive to boot from)
143 eMOVZX dx, [cs:ROMVARS.bBootDrv]
144 call GetMenuitemToDXforDriveInDL
145 mov [bp+MENUINIT.wHighlightedItem], dx
146
147 stc
148 ret
149
150
151;--------------------------------------------------------------------
152; EventItemHighlightedFromCX
153; Parameters
154; CX: Index of new highlighted item
155; DX: Index of previously highlighted item or NO_ITEM_HIGHLIGHTED
156; DS: Ptr to RAMVARS
157; ES: Ptr to BDA (zero)
158; SS:BP: Menu library handle
159; Returns:
160; CF: Set if event processed
161; Cleared if event not processed
162; Corrupts registers:
163; Does not matter
164;--------------------------------------------------------------------
165EventItemHighlightedFromCX:
166 push cx
167
168 ; Drive number translations and hotkeys must be reset to defaults so highlighted
169 ; selections are correctly displayed on Hotkey Bar and on Boot Menu
170%ifdef MODULE_HOTKEYS
171 call HotkeyBar_StoreDefaultDriveLettersToHotkeyVars
172%endif
173 call DriveXlate_Reset
174
175 ; Set highlighted item to be drive to boot from for visual purposes only
176 call BootMenu_GetDriveToDXforMenuitemInCX
177 jnc SHORT .noDriveSwapSinceRomBootSelected
178 call DriveXlate_SetDriveToSwap
179
180%ifdef MODULE_HOTKEYS
181 ; Store highlighted drive as hotkey
182 call HotkeyBar_StoreHotkeyToBootvarsForDriveNumberInDL
183 jmp SHORT .UpdateHotkeyBar
184.noDriveSwapSinceRomBootSelected:
185 mov ah, ROM_BOOT_HOTKEY_SCANCODE
186 call HotkeyBar_StoreHotkeyToBootvarsIfValidKeystrokeInAX
187
188.UpdateHotkeyBar:
189 ; Redraw Hotkey Bar for updated boot drive letters
190 mov al, MONO_NORMAL
191 CALL_DISPLAY_LIBRARY SetCharacterAttributeFromAL
192
193 mov bl, ATTRIBUTES_ARE_USED
194 mov ax, TELETYPE_OUTPUT_WITH_ATTRIBUTE
195 CALL_DISPLAY_LIBRARY SetCharOutputFunctionFromAXwithAttribFlagInBL
196 call HotkeyBar_DrawToTopOfScreen
197%else
198.noDriveSwapSinceRomBootSelected:
199%endif ; MODULE_HOTKEYS
200
201 ; Redraw changes in drive numbers
202 xor ax, ax ; Update first floppy drive (for translated drive number)
203 CALL_MENU_LIBRARY RefreshItemFromAX
204 mov dl, 80h
205 call GetMenuitemToDXforDriveInDL
206 xchg ax, dx ; Update first hard disk (for translated drive number)
207 CALL_MENU_LIBRARY RefreshItemFromAX
208 pop ax ; Update new item (for translated drive number)
209 CALL_MENU_LIBRARY RefreshItemFromAX
210 CALL_MENU_LIBRARY RefreshInformation
211 stc
212 ret
213
214
215;--------------------------------------------------------------------
216; EventKeyStrokeInAX
217; Parameters
218; AL: ASCII character for the key
219; AH: Keyboard library scan code for the key
220; DS: Ptr to RAMVARS
221; ES: Ptr to BDA (zero)
222; SS:BP: Menu library handle
223; Returns:
224; CF: Set if event processed
225; Cleared if event not processed
226; Corrupts registers:
227; Does not matter
228;--------------------------------------------------------------------
229%ifdef MODULE_HOTKEYS
230EventKeyStrokeInAX:
231 ; Keypress will be the primary boot drive
232 cmp ah, BOOT_MENU_HOTKEY_SCANCODE
233 je SHORT BootMenuEvent_Completed ; Ignore Boot Menu hotkey
234 call HotkeyBar_StoreHotkeyToBootvarsIfValidKeystrokeInAX
235 jnc SHORT BootMenuEvent_Completed
236 ; Fall to CloseBootMenu through EventItemSelectedFromCX
237%endif
238
239
240;--------------------------------------------------------------------
241; EventItemSelectedFromCX
242; Parameters
243; CX: Index of selected item
244; DS: Ptr to RAMVARS
245; ES: Ptr to BDA (zero)
246; SS:BP: Menu library handle
247; Returns:
248; CF: Set if event processed
249; Cleared if event not processed
250; Corrupts registers:
251; Does not matter
252;--------------------------------------------------------------------
253EventItemSelectedFromCX:
254 ; Fall to CloseBootMenu
255
256
257;--------------------------------------------------------------------
258; CloseBootMenu
259; Parameters
260; DS: RAMVARS segment
261; ES: BDA segment (zero)
262; Returns:
263; Nothing
264; Corrupts registers:
265; Does not matter
266;--------------------------------------------------------------------
267CloseBootMenu:
268 CALL_MENU_LIBRARY Close
269 ; Fall to BootMenuEvent_Completed
270
271
272;--------------------------------------------------------------------
273; BootMenuEvent_Completed
274; Parameters
275; Nothing
276; Returns:
277; CF: Set to exit from menu
278; Corrupts registers:
279; Nothing
280;--------------------------------------------------------------------
281BootMenuEvent_Completed:
282 stc
283%ifndef MODULE_HOTKEYS
284EventKeyStrokeInAX:
285%endif
286 ret
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