public override void CopyOutputPixelBuffer(int x, int y, int w, int h, IntPtr outputBuffer)
{
//1. This version support on Win32 only
//2. this is an example, to draw directly into the memDC, not need to create control
//3. x and y set to 0
//4. w and h must be the width and height of the viewport
unsafe
{
//create new memdc
Win32.NativeWin32MemoryDC memDc = new Win32.NativeWin32MemoryDC(w, h);
memDc.PatBlt(Win32.NativeWin32MemoryDC.PatBltColor.White);
//TODO: check if we need to set init font/brush/pen for the new DC or not
_gdiPlusViewport.FullMode = true;
//pain to the destination dc
_gdiPlusViewport.PaintMe(memDc.DC);
IntPtr outputBits = memDc.PPVBits;
//Win32.MyWin32.memcpy((byte*)outputBuffer, (byte*)memDc.PPVBits, w * 4 * h);
memDc.CopyPixelBitsToOutput((byte *)outputBuffer);
memDc.Dispose();
}
}
public void DrawString(char[] textBuffer, int startAt, int len, double x, double y)
{
//TODO: review performance
_memdc.PatBlt(Win32.NativeWin32MemoryDC.PatBltColor.White, 0, 0, _bmpWidth, _bmpHeight);
_memdc.TextOut(textBuffer);
//memdc.BitBltTo(destHdc);
// Win32.Win32Utils.BitBlt(hdc, 0, 0, bmpWidth, 50, memHdc, 0, 0, Win32.MyWin32.SRCCOPY);
//---------------
int stride = 4 * ((_bmpWidth * 32 + 31) / 32);
//Bitmap newBmp = new Bitmap(bmpWidth, 50, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
//var bmpData = newBmp.LockBits(new Rectangle(0, 0, bmpWidth, 50), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
byte[] tmp1 = new byte[stride * 50];
System.Runtime.InteropServices.Marshal.Copy(_memdc.PPVBits, tmp1, 0, tmp1.Length);
//---------------
int pos = 3;
for (int r = 0; r < 50; ++r)
{
for (int c = 0; c < stride; ++c)
{
tmp1[pos] = 255;
pos += 4;
c += 4;
}
}
_memdc.MeasureTextSize(textBuffer, out _bmpWidth, out _bmpHeight);
var memBmp = new CpuBlit.MemBitmap(_bmpWidth, _bmpHeight);
#if DEBUG
memBmp._dbugNote = "WinGdiFontPrinter.DrawString";
#endif
//------------------------------------------------------
//copy bmp from specific bmp area
//and convert to GLBmp
unsafe
{
using (CpuBlit.Imaging.TempMemPtr.FromBmp(memBmp, out byte *dest0))
{
byte *header = (byte *)_memdc.PPVBits;
{
byte *dest = dest0;
byte *rowHead = header;
int rowLen = _bmpWidth * 4;
for (int h = 0; h < _bmpHeight; ++h)
{
header = rowHead;
for (int n = 0; n < rowLen;)
{
//move next
*(dest + 0) = *(header + 0);
*(dest + 1) = *(header + 1);
*(dest + 2) = *(header + 2);
//*(dest + 3) = *(header + 3);
*(dest + 3) = 255;
header += 4;
dest += 4;
n += 4;
}
//finish one row
rowHead += stride;
}
}
}
}
//------------------------------------------------------
GLBitmap glBmp = new GLBitmap(new MemBitmapBinder(memBmp, false));
_pcx.DrawImage(glBmp, (float)x, (float)y);
glBmp.Dispose();
}