public static ScreenBufferInfo GetScreenBufferInfo()
{
ScreenBufferInfo bufferInfo = new ScreenBufferInfo();
GetConsoleScreenBufferInfo(m_StdOutputHandle, ref bufferInfo);
return(bufferInfo);
}
public void Render()
{
ScreenBufferInfo bufferInfo = ConsoleHelper.GetScreenBufferInfo();
if (bufferInfo.Size.X != m_Width || bufferInfo.Size.Y != m_Height)
{
SetSize(m_Width, m_Height);
}
Render(m_Canvas);
ConsoleHelper.WriteOutput(m_Buffer, new Coord(Width, Height), new Coord(0, 0));
}
public static void ValidateScreenSize(int width, int height)
{
ScreenBufferInfo info = GetScreenBufferInfo();
if (info.MaximumWindowSize.X < width)
{
throw new ArgumentOutOfRangeException(string.Format("MaxWidth: {0}, Attempted: {1}", info.MaximumWindowSize.X.ToString(), width.ToString()));
}
if (info.MaximumWindowSize.Y < height)
{
throw new ArgumentOutOfRangeException(string.Format("MaxHeight: {0}, Attempted: {1}", info.MaximumWindowSize.Y.ToString(), height.ToString()));
}
}
public void SetMaxSize()
{
ScreenBufferInfo info = ConsoleHelper.GetScreenBufferInfo();
SetSize(info.MaximumWindowSize.X, info.MaximumWindowSize.Y);
}
public static bool SetSize(ref int width, ref int height)
{
bool changed = false;
ScreenBufferInfo info = GetScreenBufferInfo();
//bounds can't be smaller than screen buffer
int hSize = info.Bounds.Right + 1 + info.Bounds.Left;
if (width != hSize)
{
changed = true;
}
int vSize = info.Bounds.Bottom + 1 + info.Bounds.Top;
if (height != vSize)
{
changed = true;
}
bool widthDecrease = false;
bool heightDecrease = false;
if (width < info.Size.X)
{
widthDecrease = true;
}
if (height < info.Size.Y)
{
heightDecrease = true;
}
if (width == info.Size.X && height == info.Size.Y && info.Bounds.Left == 0 && info.Bounds.Top == 0)
{
return(changed);
}
if (!widthDecrease && !heightDecrease) //if screen increases, we have to set buffer first, then window
{
CheckError(SetConsoleScreenBufferSize(m_StdOutputHandle, new Coord(width, height)));
SmallRect rect = new SmallRect(0, 0, width - 1, height - 1);
CheckError(SetConsoleWindowInfo(m_StdOutputHandle, true, ref rect));
}
else if (widthDecrease && heightDecrease) //in case of decreasing, window changes first or we get an error
{
SmallRect rect = new SmallRect(0, 0, width - 1, height - 1);
CheckError(SetConsoleWindowInfo(m_StdOutputHandle, true, ref rect));
CheckError(SetConsoleScreenBufferSize(m_StdOutputHandle, new Coord(width, height)));
}
else //for mixed case, each dimension has to be handled separately
{
SmallRect rect = new SmallRect(0, 0, width - 1, info.MaximumWindowSize.Y - 1);
if (widthDecrease)
{
CheckError(SetConsoleWindowInfo(m_StdOutputHandle, true, ref rect));
CheckError(SetConsoleScreenBufferSize(m_StdOutputHandle, new Coord(width, info.MaximumWindowSize.Y)));
}
else
{
CheckError(SetConsoleScreenBufferSize(m_StdOutputHandle, new Coord(width, info.MaximumWindowSize.Y)));
CheckError(SetConsoleWindowInfo(m_StdOutputHandle, true, ref rect));
}
rect = new SmallRect(0, 0, width - 1, height - 1);
if (heightDecrease)
{
CheckError(SetConsoleWindowInfo(m_StdOutputHandle, true, ref rect));
CheckError(SetConsoleScreenBufferSize(m_StdOutputHandle, new Coord(width, height)));
}
else
{
CheckError(SetConsoleScreenBufferSize(m_StdOutputHandle, new Coord(width, height)));
CheckError(SetConsoleWindowInfo(m_StdOutputHandle, true, ref rect));
}
}
////somehow removes column that was occupied by vertical scrollbar
Console.SetCursorPosition(0, 0);
////same for horizontal
Console.SetWindowPosition(0, 0);
return(true);
}
private static extern bool GetConsoleScreenBufferInfo([In] IntPtr consoleOutput, [In, Out] ref ScreenBufferInfo bufferInfo);
