public override void DrawText(FontState state)
{
Geometry.PointF shift = Origin.CalcF(state.DisplayAlignment,
MeasureString(state, state.Text));
PointF dest_pt = Interop.Convert(state.Location);
dest_pt.X -= shift.X;
dest_pt.Y -= shift.Y;
Drawing_Display disp = Display.Impl as Drawing_Display;
Graphics g = disp.FrameGraphics;
GraphicsState g_state = g.Save();
double scalex = state.ScaleWidth, scaley = state.ScaleHeight;
g.TranslateTransform(dest_pt.X, dest_pt.Y);
g.ScaleTransform((float)scalex, (float)scaley);
g.DrawString(state.Text, mFont,
new SolidBrush(Interop.Convert(state.Color)), Point.Empty);
g.Restore(g_state);
}
private void Draw(SurfaceState s, SurfaceDrawInstance inst)
{
mDisplay.CheckInFrame("Surface.Draw");
System.Diagnostics.Debug.Assert(mImage != null);
Geometry.SizeF displaySize = s.GetDisplaySize(SurfaceSize);
Geometry.PointF rotationCenter = s.GetRotationCenter(displaySize);
Drawing_Display disp = Display.Impl as Drawing_Display;
Graphics g = disp.FrameGraphics;
GraphicsState state = g.Save();
Geometry.PointF translatePoint = Origin.CalcF(s.DisplayAlignment, displaySize);
if (displaySize.Width < 0)
{
translatePoint.X += displaySize.Width;
rotationCenter.X += displaySize.Width;
}
if (displaySize.Height < 0)
{
translatePoint.Y += displaySize.Height;
rotationCenter.Y += displaySize.Height;
}
if (s.RotationAngle != 0)
{
// translate to rotation point, rotate, and translate back.
// System.Drawing rotates Clockwise! So we must reverse the
// rotation angle.
g.TranslateTransform(-rotationCenter.X, -rotationCenter.Y, MatrixOrder.Append);
g.RotateTransform(-(float)s.RotationAngleDegrees, MatrixOrder.Append);
g.TranslateTransform(rotationCenter.X, rotationCenter.Y, MatrixOrder.Append);
}
g.TranslateTransform(inst.DestLocation.X - translatePoint.X,
inst.DestLocation.Y - translatePoint.Y, MatrixOrder.Append);
SetInterpolation(g);
Geometry.Rectangle srcRect = inst.GetSourceRect(SurfaceSize);
if (s.Color != Geometry.Color.White)
{
ImageAttributes imageAttributes = new ImageAttributes();
ColorMatrix colorMatrix = new ColorMatrix(new float[][] {
new float[] { s.Color.R / 255.0f, 0.0f, 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, s.Color.G / 255.0f, 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, s.Color.B / 255.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, 0.0f, (float)s.Alpha, 0.0f },
new float[] { 0.0f, 0.0f, 0.0f, 0.0f, 1.0f }
});
imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
g.DrawImage(mImage, Interop.Convert(DestRect(0, 0, srcRect, s.ScaleWidth, s.ScaleHeight)),
srcRect.X,
srcRect.Y,
srcRect.Width,
srcRect.Height,
GraphicsUnit.Pixel,
imageAttributes);
}
else
{
g.DrawImage(mImage, Interop.Convert(DestRect(0, 0, srcRect, s.ScaleWidth, s.ScaleHeight)),
srcRect.X,
srcRect.Y,
srcRect.Width,
srcRect.Height,
GraphicsUnit.Pixel);
}
g.Restore(state);
}