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Implement Console.Clear

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This commit is contained in:
fusion 2021-10-11 01:44:44 +02:00
parent 9ac84e12e9
commit d162718c54
1 changed files with 58 additions and 3 deletions
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61
BeefLibs/corlib/src/Console.bf
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@ -51,6 +51,11 @@ namespace System
public uint16[2] mMaximumWindowSize;
}
[CRepr]
struct COORD : this(int16 X, int16 Y)
{
}
public static ref Event<delegate void (CancelKind cancelKind, ref bool terminate)> OnCancel
{
get
@ -77,19 +82,26 @@ namespace System
}
[CLink, CallingConvention(.Stdcall)]
static extern int SetConsoleTextAttribute(void* hConsoleOutput, uint16 wAttributes);
static extern Windows.IntBool SetConsoleTextAttribute(Windows.Handle hConsoleOutput, uint16 wAttributes);
[CLink, CallingConvention(.Stdcall)]
static extern int GetConsoleScreenBufferInfo(void* hConsoleOutput, out CONSOLE_SCREEN_BUFFER_INFO lpConsoleScreenBufferInfo);
static extern Windows.IntBool GetConsoleScreenBufferInfo(Windows.Handle hConsoleOutput, out CONSOLE_SCREEN_BUFFER_INFO lpConsoleScreenBufferInfo);
[CLink, CallingConvention(.Stdcall)]
static extern void* GetStdHandle(uint32 nStdHandle);
static extern Windows.Handle GetStdHandle(uint32 nStdHandle);
[CallingConvention(.Stdcall)]
function Windows.IntBool ConsoleCtrlHandler(int32 ctrlType);
[CLink, CallingConvention(.Stdcall)]
static extern Windows.IntBool SetConsoleCtrlHandler(ConsoleCtrlHandler handler, Windows.IntBool addHandler);
[CLink, CallingConvention(.Stdcall)]
static extern Windows.IntBool FillConsoleOutputCharacterW(Windows.Handle hConsoleOutput, char16 cCharacter, uint32 nLength, COORD dwWriteCoord, uint32* lpNumberOfCharsWritten);
[CLink, CallingConvention(.Stdcall)]
static extern Windows.IntBool FillConsoleOutputAttribute(Windows.Handle hConsoleOutput, uint16 wAttribute, uint32 nLength, COORD dwWriteCoord, uint32* lpNumberOfAttrsWritten);
[CLink, CallingConvention(.Stdcall)]
static extern Windows.IntBool SetConsoleCursorPosition(Windows.Handle hConsoleOutput, COORD dwCursorPosition);
public static this()
{
let handle = GetStdHandle(STD_OUTPUT_HANDLE);
@ -257,6 +269,49 @@ namespace System
#else
Write("\x1B[{}m", ForegroundColor.AnsiCode);
Write("\x1B[{}m", BackgroundColor.AnsiCode + 10);
#endif
}
public static void Clear()
{
#if BF_PLATFORM_WINDOWS
Windows.Handle hStdOut;
CONSOLE_SCREEN_BUFFER_INFO csbi;
uint32 count;
uint32 cellCount;
COORD homeCoords = .(0, 0);
hStdOut = GetStdHandle( STD_OUTPUT_HANDLE );
if (hStdOut == .InvalidHandle)
return;
/* Get the number of cells in the current buffer */
if (!GetConsoleScreenBufferInfo( hStdOut, out csbi ))
return;
cellCount = csbi.mSize[0] * csbi.mSize[1];
/* Fill the entire buffer with spaces */
if (!FillConsoleOutputCharacterW(
hStdOut,
' ',
cellCount,
homeCoords,
&count
)) return;
/* Fill the entire buffer with the current colors and attributes */
if (!FillConsoleOutputAttribute(
hStdOut,
csbi.mAttributes,
cellCount,
homeCoords,
&count
)) return;
/* Move the cursor home */
SetConsoleCursorPosition( hStdOut, homeCoords );
#else
Write("\x1B[H\x1B[J");
#endif
}
}