public void mbPaintBitUpdated(mbWebView webview, IntPtr param, IntPtr buffer, ref mbRect r, int width, int height)
{
Bitmap image;
if (_image == null || _image.Width < width || _image.Height < height)
{
lock (this)
{
_image = new Bitmap(width, height, PixelFormat.Format32bppArgb);
_drawSize = new Size(width, height);
image = _image;
}
}
else
{
image = _image;
}
unsafe
{
//计算更新区域
var rect = new Rectangle
{
X = r.x >= width ? width - 1 : r.x,
Y = r.y >= height ? height - 1 : r.y
};
rect.Width = rect.X + r.w > width ? width - rect.X : r.w;
rect.Height = rect.Y + r.h > height ? height - rect.Y : r.h;
BitmapData bitmapData = image.LockBits(rect, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
IntPtr ptr = bitmapData.Scan0;
int targetStride = image.Width;
int sourceStride = width;
int *target = (int *)ptr;
int *source = (int *)buffer;
int targetPix;
int sourcePix;
for (int h = 0; h < rect.Height; h++)
{
for (int w = 0; w < rect.Width; w++)
{
targetPix = targetStride * h + w;
sourcePix = sourceStride * (rect.Y + h) + (rect.X + w);
*(target + targetPix) = *(source + sourcePix);
}
}
_image.UnlockBits(bitmapData);
Invalidate(rect);
}
}
public void mbPaintBitUpdated(mbWebView webview, IntPtr param, IntPtr buffer, ref mbRect r, int width, int height)
{
int stride = width * 4;
if (_image == null || _image.PixelWidth < width || _image.PixelHeight < height)
{
_image = new WriteableBitmap(width, height, 96, 96, PixelFormats.Pbgra32, BitmapPalettes.WebPaletteTransparent);
InvalidateVisual();
}
//计算更新区域
var rect = new Int32Rect();
rect.X = r.x >= width ? width - 1 : r.x;
rect.Y = r.y >= height ? height - 1 : r.y;
rect.Width = rect.X + r.w > width ? width - rect.X : r.w;
rect.Height = rect.Y + r.h > height ? height - rect.Y : r.h;
_image.WritePixels(rect, buffer, stride * (rect.Height + rect.Y), stride, r.x, r.y);
_drawSize = new Size(width, height);
}
