xt-sys/exectos
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Implement scrolling in the boot menu
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Aiken Harris 2025-07-20 16:45:15 +02:00 committed by CodingWorkshop Signing Team
parent da3e039a05
commit a81bad32fe
Signed by: CodingWorkshop Signing Team
GPG Key ID: 6DC88369C82795D2
1 changed files with 46 additions and 36 deletions
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82
xtldr/textui.c
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@ -4,6 +4,7 @@
* FILE: xtldr/textui.c
* DESCRIPTION: Text console User Interface (TUI) support for XT Boot Loader
* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
* Aiken Harris <harraiken91@gmail.com>
*/
#include <xtldr.h>
@ -22,7 +23,8 @@ BlDisplayBootMenu()
{
XTBL_DIALOG_HANDLE Handle;
PXTBL_BOOTMENU_ITEM MenuEntries = NULL;
ULONG Index, NumberOfEntries, HighligtedEntryId;
ULONG Index;
ULONG HighligtedEntryId, NumberOfEntries, TopVisibleEntry, VisibleEntries;
UINT_PTR EventIndex;
EFI_EVENT Events[2];
EFI_INPUT_KEY Key;
@ -32,6 +34,7 @@ BlDisplayBootMenu()
PWCHAR TimeOutString;
/* Initialize boot menu list */
TopVisibleEntry = 0;
Status = BlInitializeBootMenuList(&MenuEntries, &NumberOfEntries, &HighligtedEntryId);
if(Status != STATUS_EFI_SUCCESS)
{
@ -39,6 +42,19 @@ BlDisplayBootMenu()
return;
}
/* Draw boot menu */
BlpDrawBootMenu(&Handle);
/* Calculate how many entries can be visible in the menu box */
VisibleEntries = Handle.Height - 2;
/* Adjust the view if the default entry is not initially visible */
if(HighligtedEntryId >= VisibleEntries)
{
/* Scroll the view to make the highlighted entry the last visible one */
TopVisibleEntry = HighligtedEntryId - VisibleEntries + 1;
}
/* Get timeout from the configuration */
TimeOutString = BlGetConfigValue(L"TIMEOUT");
TimeOut = -1;
@ -59,23 +75,24 @@ BlDisplayBootMenu()
/* Infinite boot menu loop */
while(TRUE)
{
/* Draw boot menu */
/* Redraw boot menu */
BlpDrawBootMenu(&Handle);
/* Check if there is anything to show in the boot menu */
if(NumberOfEntries > 0) {
/* Check if all menu entries will fit into the menu box */
if(NumberOfEntries > Handle.Height - 2)
{
/* Too many menu entries, limit entries to match box height (-2 for upper and bottom borders) */
NumberOfEntries = Handle.Height - 2;
}
/* Sanity check to ensure we do not display more entries than possible */
if (VisibleEntries > NumberOfEntries)
{
VisibleEntries = NumberOfEntries;
}
/* Check if there is anything to show in the boot menu */
if(NumberOfEntries > 0)
{
/* Iterate through all menu entries */
for(Index = 0; Index < NumberOfEntries; Index++)
for(Index = 0; Index < VisibleEntries; Index++)
{
/* Draw menu entry */
BlpDrawBootMenuEntry(&Handle, MenuEntries[Index].EntryName, Index, Index == HighligtedEntryId);
BlpDrawBootMenuEntry(&Handle, MenuEntries[TopVisibleEntry + Index].EntryName,
Index, (TopVisibleEntry + Index) == HighligtedEntryId);
}
}
else
@ -159,14 +176,14 @@ BlDisplayBootMenu()
else if(Key.ScanCode == 0x01)
{
/* UpArrow key pressed, go to previous entry if possible */
if(HighligtedEntryId > 0)
if (HighligtedEntryId > 0)
{
/* Highlight previous entry */
HighligtedEntryId--;
BlpDrawBootMenuEntry(&Handle, MenuEntries[HighligtedEntryId + 1].EntryName,
HighligtedEntryId + 1, FALSE);
BlpDrawBootMenuEntry(&Handle, MenuEntries[HighligtedEntryId].EntryName,
HighligtedEntryId, TRUE);
if (HighligtedEntryId < TopVisibleEntry)
{
TopVisibleEntry = HighligtedEntryId;
}
break;
}
}
else if(Key.ScanCode == 0x02)
@ -174,12 +191,12 @@ BlDisplayBootMenu()
/* DownArrow key pressed, go to next entry if possible */
if(HighligtedEntryId < NumberOfEntries - 1)
{
/* Highlight next entry */
HighligtedEntryId++;
BlpDrawBootMenuEntry(&Handle, MenuEntries[HighligtedEntryId - 1].EntryName,
HighligtedEntryId - 1, FALSE);
BlpDrawBootMenuEntry(&Handle, MenuEntries[HighligtedEntryId].EntryName,
HighligtedEntryId, TRUE);
if (HighligtedEntryId >= TopVisibleEntry + VisibleEntries)
{
TopVisibleEntry = HighligtedEntryId - VisibleEntries + 1;
}
break;
}
}
else if(Key.ScanCode == 0x09)
@ -188,12 +205,9 @@ BlDisplayBootMenu()
if(HighligtedEntryId != 0)
{
/* Highlight first entry */
BlpDrawBootMenuEntry(&Handle, MenuEntries[HighligtedEntryId].EntryName,
HighligtedEntryId, FALSE);
BlpDrawBootMenuEntry(&Handle, MenuEntries[0].EntryName, 0, TRUE);
/* Update highlighted entry ID */
HighligtedEntryId = 0;
TopVisibleEntry = 0;
break;
}
}
else if(Key.ScanCode == 0x0A)
@ -202,13 +216,9 @@ BlDisplayBootMenu()
if(HighligtedEntryId != NumberOfEntries - 1)
{
/* Highlight last entry */
BlpDrawBootMenuEntry(&Handle, MenuEntries[HighligtedEntryId].EntryName,
HighligtedEntryId, FALSE);
BlpDrawBootMenuEntry(&Handle, MenuEntries[NumberOfEntries - 1].EntryName,
NumberOfEntries - 1, TRUE);
/* Update highlighted entry ID */
HighligtedEntryId = NumberOfEntries - 1;
TopVisibleEntry = (NumberOfEntries > VisibleEntries) ? (NumberOfEntries - VisibleEntries) : 0;
break;
}
}
else if(Key.ScanCode == 0x0B)
@ -870,8 +880,8 @@ BlpDrawBootMenu(OUT PXTBL_DIALOG_HANDLE Handle)
BlSetCursorPosition(0, Handle->PosY + Handle->Height);
BlSetConsoleAttributes(EFI_TEXT_BGCOLOR_BLACK | EFI_TEXT_FGCOLOR_LIGHTGRAY);
BlConsolePrint(L" Use cursors to change the selection. Press ENTER key to boot the chosen\n"
" Operating System, 'e' to edit it before booting or 's' for XTLDR shell.\n"
" Additional help available after pressing F1 key.");
L" Operating System, 'e' to edit it before booting or 's' for XTLDR shell.\n"
L" Additional help available after pressing F1 key.");
}
/**