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 actualImg = new Agg.ActualImage(bmpWidth, bmpHeight);
//------------------------------------------------------
//copy bmp from specific bmp area
//and convert to GLBmp
Agg.TempMemPtr buffer = PixelFarm.Agg.ActualImage.GetBufferPtr(actualImg);
unsafe
{
byte *header = (byte *)memdc.PPVBits;
byte *dest0 = (byte *)buffer.Ptr;
{
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;
}
}
}
buffer.Release();
//------------------------------------------------------
GLBitmap glBmp = new GLBitmap(actualImg);
_glsx.DrawImage(glBmp, (float)x, (float)y);
glBmp.Dispose();
}
