public SkiaCanvasViewport(RootGraphic rootgfx, Size viewportSize)
: base(rootgfx, viewportSize)
{
this.CalculateCanvasPages();
mySkCanvas = new PixelFarm.Drawing.Skia.MySkiaDrawBoard(0, 0, 0, 0, internalSizeW, internalSizwH);
memdc = new Win32.NativeWin32MemoryDC(internalSizeW, internalSizwH);
}
public void Dispose()
{
if (_nativeWin32DC != null)
{
_nativeWin32DC.Dispose();
_nativeWin32DC = null;
}
}
public WinGdiFontPrinter(GLPainterContext pcx, int w, int h)
{
_pcx = pcx;
_width = w;
_height = h;
_bmpWidth = w;
_bmpHeight = h;
_memdc = new Win32.NativeWin32MemoryDC(_bmpWidth, _bmpHeight);
//TODO: review here
//use default font from current platform
InitFont("tahoma", 14);
_memdc.SetTextColor(0);
}
public CpuBlitAggCanvasRenderElement(RootGraphic rootgfx, int w, int h)
: base(rootgfx, w, h)
{
//TODO: check if we can access raw rootGraphics buffer or not
//1. gdi+ create backbuffer
_nativeWin32DC = new Win32.NativeWin32MemoryDC(w, h);
//2. create actual bitmap that share bitmap data from native _nativeWin32Dc
_memBmp = new MemBitmap(w, h, _nativeWin32DC.PPVBits);
//----------------------------------------------------------------
//3. create render surface from bitmap => provide basic bitmap fill operations
AggRenderSurface aggsx = new AggRenderSurface();
aggsx.AttachDstBitmap(_memBmp);
//4. painter wraps the render surface => provide advance operations
AggPainter aggPainter = new AggPainter(aggsx);
aggPainter.CurrentFont = new PixelFarm.Drawing.RequestFont("tahoma", 14);
_painter = aggPainter;
//----------------------------------------------------------------
}
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();
}
}
