public override void DrawScreenOn(Gdi mem, Rectangle rect)
{
var fromDC = _fromGraphics.GetHdc();
var toDC = _ToGraphics.GetHdc();
var toWidth = (int)(ViewTransitionManager.TransitionCanvas.Width * _transitionPct);
if (SlideDirection == TransitionType.SlideLeft)
toWidth = ViewTransitionManager.TransitionCanvas.Width - toWidth;
int fromWidth = ViewTransitionManager.TransitionCanvas.Width - toWidth;
if (SlideDirection == TransitionType.SlideLeft)
{
mem.BitBlt(0, 0, toWidth, _FromBitmap.Height,
fromDC, fromWidth, 0, TernaryRasterOperations.SRCCOPY);
mem.BitBlt(toWidth, 0, fromWidth, _ToBitmap.Height,
toDC, 0, 0, TernaryRasterOperations.SRCCOPY);
}
else
{
mem.BitBlt(0, 0, toWidth, _FromBitmap.Height,
toDC, fromWidth, 0, TernaryRasterOperations.SRCCOPY);
mem.BitBlt(toWidth, 0, fromWidth, _ToBitmap.Height,
fromDC, 0, 0, TernaryRasterOperations.SRCCOPY);
}
_fromGraphics.ReleaseHdc(fromDC);
_ToGraphics.ReleaseHdc(toDC);
}
public void DrawRender(Gdi g)
{
Rectangle rect = new Rectangle(0, 0, Width, Height);
IntPtr hdcMem = OffScreenGraphics.GetHdc();
using (Gdi gMem = Gdi.FromHdc(hdcMem, Rectangle.Empty))
{
DrawScreenOn(gMem, rect, _currentScrollPosition);
g.BitBlt(Location.X, Location.Y, rect.Width, rect.Height, gMem, 0, 0, TernaryRasterOperations.SRCCOPY);
}
OffScreenGraphics.ReleaseHdc(hdcMem);
}
protected override void OnRender(Gdi graphics, Rectangle clipRect)
{
IntPtr ptrSrc = OffscreenBuffer.OffScreenGraphics.GetHdc();
using (Gdi gr = Gdi.FromHdc(ptrSrc, Rectangle.Empty))
{
DrawBackground(gr, clipRect);
// fill background with double gradient
var y = (int)(_backgroundRectangle.Height * _gradientCenter);
gr.GradientFill(new Rectangle(_backgroundRectangle.Left, _backgroundRectangle.Top,
_backgroundRectangle.Width, y),
_gradientColor1, _gradientColor2, FillDirection.TopToBottom);
gr.GradientFill(new Rectangle(_backgroundRectangle.Left, _backgroundRectangle.Top + y,
_backgroundRectangle.Width, _backgroundRectangle.Height - y),
_gradientColor2, _gradientColor3, FillDirection.TopToBottom);
// Pass the graphics to the canvas to render
if (Canvas != null)
{
Canvas.Render(gr, clipRect);
}
//Draw Text
SetFont(gr);
gr.DrawText(_message,
new Win32.RECT(_textRectangle.X,
_textRectangle.Y,
_textRectangle.Width,
_textRectangle.Height),
Win32.DT.LEFT | Win32.DT.TOP | Win32.DT.WORDBREAK);
}
graphics.BitBlt(clipRect.Left, clipRect.Top, Width, Height, ptrSrc, clipRect.Left, clipRect.Top, TernaryRasterOperations.SRCCOPY);
OffscreenBuffer.OffScreenGraphics.ReleaseHdc(ptrSrc);
}
