public override Geometry.Size StringDisplaySize(string text)
{
Drawing_Display disp = Display.Impl as Drawing_Display;
Graphics g = disp.FrameGraphics;
bool disposeGraphics = false;
if (g == null)
{
g = Graphics.FromImage((disp.RenderTarget.Impl as Drawing_IRenderTarget).BackBuffer);
disposeGraphics = true;
}
SizeF result = new SizeF(g.MeasureString(text, mFont));
double scalex, scaley;
if (disposeGraphics)
{
g.Dispose();
}
GetScale(out scalex, out scaley);
result.Height *= (float)scalex;
result.Width *= (float)scaley;
return(new Geometry.Size((int)result.Width, (int)result.Height));
}
public Drawing_Surface(Geometry.Size sz)
{
mDisplay = Display.Impl as Drawing_Display;
mImage = new Bitmap(sz.Width, sz.Height);
System.Diagnostics.Debug.Assert(mImage != null);
}
public Drawing_Surface(Stream st)
{
mDisplay = Display.Impl as Drawing_Display;
mImage = (Bitmap)Bitmap.FromStream(st);
ConvertImage();
System.Diagnostics.Debug.Assert(mImage != null);
}
public Drawing_Surface(string fileName)
{
mDisplay = Display.Impl as Drawing_Display;
mImage = (Bitmap)Image.FromFile(fileName);
ConvertImage();
System.Diagnostics.Debug.Assert(mImage != null);
}
public Drawing_Surface(Bitmap image, Rectangle sourceRect)
{
mDisplay = Display.Impl as Drawing_Display;
// copy the pixels from the srcRect
mImage = new Bitmap(sourceRect.Width, sourceRect.Height);
Graphics g = Graphics.FromImage(mImage);
g.DrawImage(image,
new Rectangle(0, 0, sourceRect.Width, sourceRect.Height),
(Rectangle)sourceRect, GraphicsUnit.Pixel);
g.Dispose();
}
public override void DrawPoints(Geometry.Point[] destPts)
{
mDisplay.CheckInFrame("Surface.Draw");
System.Diagnostics.Debug.Assert(mImage != null);
Drawing_Display disp = Display.Impl as Drawing_Display;
Graphics g = disp.FrameGraphics;
Point[] pts = new Point[destPts.Length];
for (int i = 0; i < pts.Length; i++)
{
pts[i] = Interop.Convert(destPts[i]);
}
g.DrawImage(mImage, pts);
}
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);
}