public override void DrawText(Geometry.PointF dest_pt, string text)
{
Geometry.PointF dest = Origin.CalcF(DisplayAlignment, StringDisplaySize(text));
dest_pt.X -= dest.X;
dest_pt.Y -= dest.Y;
Drawing_Display disp = Display.Impl as Drawing_Display;
Graphics g = disp.FrameGraphics;
GraphicsState state = g.Save();
double scalex, scaley;
GetScale(out scalex, out scaley);
g.TranslateTransform(dest_pt.X, dest_pt.Y);
g.ScaleTransform((float)scalex, (float)scaley);
g.DrawString(text, mFont,
new SolidBrush(Interop.Convert(Color)), Point.Empty);
g.Restore(state);
}
public override void Draw(float destX, float destY, Geometry.Rectangle srcRect, float rotationCenterX, float rotationCenterY)
{
mDisplay.CheckInFrame("Surface.Draw");
PointF destPt = new PointF(destX, destY);
System.Diagnostics.Debug.Assert(mImage != null);
Drawing_Display disp = Display.Impl as Drawing_Display;
Graphics g = disp.FrameGraphics;
GraphicsState state = g.Save();
Geometry.PointF translatePoint = Origin.CalcF(DisplayAlignment, DisplaySize);
if (DisplaySize.Width < 0)
{
translatePoint.X += DisplaySize.Width;
rotationCenterX += DisplaySize.Width;
}
if (DisplaySize.Height < 0)
{
translatePoint.Y += DisplaySize.Height;
rotationCenterY += DisplaySize.Height;
}
// translate to rotation point, rotate, and translate back.
// System.Drawing rotates Clockwise! So we must reverse the
// rotation angle.
g.TranslateTransform(-rotationCenterX, -rotationCenterY, MatrixOrder.Append);
g.RotateTransform(-(float)RotationAngleDegrees, MatrixOrder.Append);
g.TranslateTransform(rotationCenterX, rotationCenterY, MatrixOrder.Append);
SetInterpolation(g);
g.TranslateTransform(destPt.X - translatePoint.X,
destPt.Y - translatePoint.Y, MatrixOrder.Append);
if (Color != Geometry.Color.White)
{
ImageAttributes imageAttributes = new ImageAttributes();
ColorMatrix colorMatrix = new ColorMatrix(new float[][] {
new float[] { Color.R / 255.0f, 0.0f, 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, Color.G / 255.0f, 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, Color.B / 255.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, 0.0f, (float)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)),
srcRect.X,
srcRect.Y,
srcRect.Width,
srcRect.Height,
GraphicsUnit.Pixel,
imageAttributes);
}
else
{
g.DrawImage(mImage, Interop.Convert(DestRect(0, 0, srcRect)),
srcRect.X,
srcRect.Y,
srcRect.Width,
srcRect.Height,
GraphicsUnit.Pixel);
}
g.Restore(state);
}
/// <summary>
/// For function use, see documentation of Surface.
///
/// Info for developers:
/// This method should draw the surface to the screen, using all the
/// scaling, rotation, etc. state data in the stored Surface object.
/// </summary>
/// <param name="destX"></param>
/// <param name="destY"></param>
public virtual void Draw(float destX, float destY)
{
Geometry.PointF rotatePoint = Origin.CalcF(RotationCenter, DisplaySize);
Draw(destX, destY, rotatePoint.X, rotatePoint.Y);
}