Implement boot menu skeleton

xtldr2/includes/bootman.h

@@ -216,6 +216,17 @@ BlpDissectVolumeArcPath(IN PCHAR SystemPath,
                         OUT PULONG DriveNumber,
                         OUT PULONG PartNumber);
 
+XTCDECL
+VOID
+BlpDrawBootMenu(OUT PXTBL_DIALOG_HANDLE Handle);
+
+XTCDECL
+VOID
+BlpDrawBootMenuEntry(IN PXTBL_DIALOG_HANDLE Handle,
+                     IN PWCHAR MenuEntry,
+                     IN UINT Position,
+                     IN BOOLEAN Highlighted);
+
 XTCDECL
 VOID
 BlpDrawDialogBox(IN OUT PXTBL_DIALOG_HANDLE Handle,

xtldr2/textui.c

@@ -308,6 +308,117 @@ BlpDetermineDialogBoxSize(IN OUT PXTBL_DIALOG_HANDLE Handle,
     Handle->Height = Height;
 }
 
+/**
+ * Draws a text UI-based boot menu.
+ *
+ * @param Handle
+ *        Supplies a pointer to the boot menu handle.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+BlpDrawBootMenu(OUT PXTBL_DIALOG_HANDLE Handle)
+{
+    /* Query console screen resolution */
+    BlQueryConsoleMode(&Handle->ResX, &Handle->ResY);
+
+    /* Set boot menu parameters */
+    Handle->Attributes = 0;
+    Handle->DialogColor = EFI_TEXT_BGCOLOR_BLACK;
+    Handle->TextColor = EFI_TEXT_FGCOLOR_LIGHTGRAY;
+    Handle->PosX = 3;
+    Handle->PosY = 3;
+    Handle->Width = Handle->ResX - 6;
+    Handle->Height = Handle->ResY - 10;
+
+    /* Clear screen and disable cursor */
+    BlSetConsoleAttributes(Handle->DialogColor | Handle->TextColor);
+    BlClearConsoleScreen();
+    BlDisableConsoleCursor();
+
+    /* Check if debugging enabled */
+    if(DEBUG)
+    {
+        /* Print debug version of XTLDR banner */
+        BlSetCursorPosition((Handle->ResX - 44) / 2, 1);
+        BlConsolePrint(L"XTLDR Boot Loader v%d.%d (%s-%s)\n",
+                       XTLDR_VERSION_MAJOR, XTLDR_VERSION_MINOR, XTOS_VERSION_DATE, XTOS_VERSION_HASH);
+    }
+    else
+    {
+        /* Print standard XTLDR banner */
+        BlSetCursorPosition((Handle->ResX - 22) / 2, 1);
+        BlConsolePrint(L"XTLDR Boot Loader v%d.%d\n", XTLDR_VERSION_MAJOR, XTLDR_VERSION_MINOR);
+    }
+
+    /* Draw empty dialog box for boot menu */
+    BlpDrawDialogBox(Handle, NULL, NULL);
+
+    /* Print help message below the boot menu */
+    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.");
+}
+
+/**
+ * Draws boot menu entry at the specified position.
+ *
+ * @param Handle
+ *        Supplies a pointer to the boot menu handle.
+ *
+ * @param MenuEntry
+ *        Supplies a pointer to the buffer containing a menu entry name.
+ *
+ * @param Position
+ *        Specifies entry position on the list in the boot menu.
+ *
+ * @param Highlighted
+ *        Specifies whether this entry should be highlighted or not.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+BlpDrawBootMenuEntry(IN PXTBL_DIALOG_HANDLE Handle,
+                     IN PWCHAR MenuEntry,
+                     IN UINT Position,
+                     IN BOOLEAN Highlighted)
+{
+    UINT Index;
+
+    /* Check whether this entry should be highlighted */
+    if(Highlighted)
+    {
+        /* Highlight this entry */
+        BlSetConsoleAttributes(EFI_TEXT_BGCOLOR_LIGHTGRAY | EFI_TEXT_FGCOLOR_BLACK);
+    }
+    else
+    {
+        /* Set default colors */
+        BlSetConsoleAttributes(EFI_TEXT_BGCOLOR_BLACK | EFI_TEXT_FGCOLOR_LIGHTGRAY);
+    }
+
+    /* Move cursor to the right position */
+    BlSetCursorPosition(5, 4 + Position);
+
+    /* Clear menu entry */
+    for(Index = 0; Index < Handle->Width - 4; Index++)
+    {
+        BlConsolePrint(L" ");
+    }
+
+    /* Print menu entry */
+    BlSetCursorPosition(5, 4 + Position);
+    BlConsolePrint(L"%S\n", MenuEntry);
+}
+
 /**
  * Draws dialog box with caption and message.
  *