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 PaintMe(IntPtr hdc)
{
if (this.IsClosed)
{
return;
}
_rootGraphics.PrepareRender();
//---------------
_rootGraphics.IsInRenderPhase = true;
#if DEBUG
_rootGraphics.dbug_rootDrawingMsg.Clear();
_rootGraphics.dbug_drawLevel = 0;
#endif
//1. clear sk surface
mySkCanvas.Clear(PixelFarm.Drawing.Color.White);
//2. render to the surface
UpdateAllArea(mySkCanvas, _rootGraphics.TopWindowRenderBox);
//3. copy bitmap buffer from the surface and render to final hdc
//-----------------------------------------------
//TODO: review performance here
//we should copy from unmanaged (skia bitmap)
//and write to unmanaged (hdc'bitmap)
SkiaSharp.SKBitmap backBmp = mySkCanvas.BackBmp;
backBmp.LockPixels();
IntPtr h = backBmp.GetPixels();
int w1 = backBmp.Width;
int h1 = backBmp.Height;
int stride = backBmp.RowBytes;
//PixelFarm.Agg.AggMemMx.memcpy()
//System.Runtime.InteropServices.Marshal.Copy(
// h, tmpBuffer, 0, tmpBuffer.Length
// );
//copy skia pixels to our dc
unsafe
{
//Win32.MyWin32.memcpy((byte*)memdc.PPVBits, (byte*)h, internalSizeW * 4 * internalSizwH);
memdc.CopyPixelBitsToOutput((byte *)h);
}
backBmp.UnlockPixels();
//bitblt to target
memdc.BitBltTo(hdc);
//var bmpdata = tmpBmp.LockBits(new System.Drawing.Rectangle(0, 0, w1, h1),
// System.Drawing.Imaging.ImageLockMode.ReadWrite,
// System.Drawing.Imaging.PixelFormat.Format32bppArgb);
//System.Runtime.InteropServices.Marshal.Copy(tmpBuffer, 0, bmpdata.Scan0, tmpBuffer.Length);
//tmpBmp.UnlockBits(bmpdata);
//using (System.Drawing.Graphics g2 = System.Drawing.Graphics.FromHdc(hdc))
//{
// g2.DrawImage(tmpBmp, 0, 0);
//}
//-----------------------------------------------------------------------------
_rootGraphics.IsInRenderPhase = false;
#if DEBUG
RootGraphic visualroot = RootGraphic.dbugCurrentGlobalVRoot;
if (visualroot.dbug_RecordDrawingChain)
{
List <dbugLayoutMsg> outputMsgs = dbugOutputWindow.dbug_rootDocDebugMsgs;
outputMsgs.Clear();
outputMsgs.Add(new dbugLayoutMsg(null as RenderElement, "[" + debug_render_to_output_count + "]"));
visualroot.dbug_DumpRootDrawingMsg(outputMsgs);
dbugOutputWindow.dbug_InvokeVisualRootDrawMsg();
debug_render_to_output_count++;
}
if (dbugHelper01.dbugVE_HighlightMe != null)
{
dbugOutputWindow.dbug_HighlightMeNow(dbugHelper01.dbugVE_HighlightMe.dbugGetGlobalRect());
}
#endif
}
