| public TranslateTransform ( float dx, float dy ) : void | ||
| dx | float | |
| dy | float | |
| return | void | |
public static byte[] CreateShadowImage(
ShadowImageType imageType,
int Width,
int Height,
Color ShadowColor,
Color BackColor,
ImageFormat Format)
{
MemoryStream memStream = new MemoryStream();
Bitmap bmpPaint = new Bitmap(Width,Height);
Graphics grph = Graphics.FromImage(bmpPaint);
if ( imageType == ShadowImageType.Blank )
{
SolidBrush brush;
brush = new SolidBrush(BackColor);
grph.FillRectangle(brush,0,0,Width,Height);
}
else if ( imageType == ShadowImageType.Top || imageType == ShadowImageType.Bottom ||
imageType == ShadowImageType.Left || imageType == ShadowImageType.Right )
{
int angle=0;
switch( imageType )
{
case ShadowImageType.Top:
angle = 270; break;
case ShadowImageType.Right:
angle = 0; break;
case ShadowImageType.Bottom:
angle = 90; break;
case ShadowImageType.Left:
angle = 180; break;
}
LinearGradientBrush brush;
brush = new LinearGradientBrush(
new Rectangle(0,0,Width,Height),
ShadowColor,
BackColor,
angle,true);
brush.Blend = shadowBlendScaleLinear;
grph.FillRectangle(brush,0,0,Width,Height);
}
else
{
GraphicsPath path = new GraphicsPath();
path.AddEllipse(0, 0, Width*2,Height*2);
PathGradientBrush brush = new PathGradientBrush(path);
brush.CenterColor = ShadowColor;
Color[] colors = {BackColor};
brush.SurroundColors = colors;
if ( imageType == ShadowImageType.BottomRight )
{
brush.TranslateTransform(-Width,-Height);
}
else if ( imageType == ShadowImageType.TopRight )
{
brush.TranslateTransform(-Width,0);
}
else if ( imageType == ShadowImageType.BottomLeft )
{
brush.TranslateTransform(0,-Height);
}
brush.CenterPoint=new PointF(Width,Height);
brush.Blend = shadowBlendScaleRadial;
grph.FillRectangle(new SolidBrush(BackColor),0, 0, Width, Height);
grph.FillRectangle(brush, 0, 0, Width, Height);
}
bmpPaint.Save(memStream,Format);
return memStream.GetBuffer();
}
public void Transform_Operations ()
{
using (PathGradientBrush pgb = new PathGradientBrush (pts_2f, WrapMode.Clamp)) {
Matrix clone = pgb.Transform.Clone ();
Matrix mul = clone.Clone ();
clone.Multiply (mul, MatrixOrder.Append);
pgb.MultiplyTransform (mul, MatrixOrder.Append);
Assert.AreEqual (pgb.Transform, clone, "Multiply/Append");
clone.Multiply (mul, MatrixOrder.Prepend);
pgb.MultiplyTransform (mul, MatrixOrder.Prepend);
Assert.AreEqual (pgb.Transform, clone, "Multiply/Prepend");
clone.Rotate (45, MatrixOrder.Append);
pgb.RotateTransform (45, MatrixOrder.Append);
Assert.AreEqual (pgb.Transform, clone, "Rotate/Append");
clone.Rotate (45, MatrixOrder.Prepend);
pgb.RotateTransform (45, MatrixOrder.Prepend);
Assert.AreEqual (pgb.Transform, clone, "Rotate/Prepend");
clone.Scale (0.25f, 2, MatrixOrder.Append);
pgb.ScaleTransform (0.25f, 2, MatrixOrder.Append);
Assert.AreEqual (pgb.Transform, clone, "Scale/Append");
clone.Scale (0.25f, 2, MatrixOrder.Prepend);
pgb.ScaleTransform (0.25f, 2, MatrixOrder.Prepend);
Assert.AreEqual (pgb.Transform, clone, "Scale/Prepend");
clone.Translate (10, 20, MatrixOrder.Append);
pgb.TranslateTransform (10, 20, MatrixOrder.Append);
Assert.AreEqual (pgb.Transform, clone, "Translate/Append");
clone.Translate (30, 40, MatrixOrder.Prepend);
pgb.TranslateTransform (30, 40, MatrixOrder.Prepend);
Assert.AreEqual (pgb.Transform, clone, "Translate/Prepend");
clone.Reset ();
pgb.ResetTransform ();
Assert.AreEqual (pgb.Transform, clone, "Reset");
}
}
public void TranslateTransform ()
{
using (PathGradientBrush pgb = new PathGradientBrush (pts_2f, WrapMode.Clamp)) {
pgb.TranslateTransform (1, 1);
float[] elements = pgb.Transform.Elements;
Assert.AreEqual (1, elements[0], 0.1, "matrix.0");
Assert.AreEqual (0, elements[1], 0.1, "matrix.1");
Assert.AreEqual (0, elements[2], 0.1, "matrix.2");
Assert.AreEqual (1, elements[3], 0.1, "matrix.3");
Assert.AreEqual (1, elements[4], 0.1, "matrix.4");
Assert.AreEqual (1, elements[5], 0.1, "matrix.5");
pgb.TranslateTransform (-1, -1);
// strangely lgb.Transform.IsIdentity is false
elements = pgb.Transform.Elements;
Assert.AreEqual (1, elements[0], 0.1, "revert.matrix.0");
Assert.AreEqual (0, elements[1], 0.1, "revert.matrix.1");
Assert.AreEqual (0, elements[2], 0.1, "revert.matrix.2");
Assert.AreEqual (1, elements[3], 0.1, "revert.matrix.3");
Assert.AreEqual (0, elements[4], 0.1, "revert.matrix.4");
Assert.AreEqual (0, elements[5], 0.1, "revert.matrix.5");
}
}
public void TranslateTransform_InvalidOrder ()
{
using (PathGradientBrush pgb = new PathGradientBrush (pts_2f, WrapMode.Clamp)) {
pgb.TranslateTransform (1, 1, (MatrixOrder) Int32.MinValue);
}
}
public void Rectangle ()
{
using (PathGradientBrush pgb = new PathGradientBrush (pts_2f, WrapMode.TileFlipXY)) {
CheckDefaultRectangle ("Original", pgb.Rectangle);
pgb.MultiplyTransform (new Matrix (2, 0, 0, 2, 2, 2));
CheckDefaultRectangle ("Multiply", pgb.Rectangle);
pgb.ResetTransform ();
CheckDefaultRectangle ("Reset", pgb.Rectangle);
pgb.RotateTransform (90);
CheckDefaultRectangle ("Rotate", pgb.Rectangle);
pgb.ScaleTransform (4, 0.25f);
CheckDefaultRectangle ("Scale", pgb.Rectangle);
pgb.TranslateTransform (-10, -20);
CheckDefaultRectangle ("Translate", pgb.Rectangle);
pgb.SetBlendTriangularShape (0.5f);
CheckDefaultRectangle ("SetBlendTriangularShape", pgb.Rectangle);
pgb.SetSigmaBellShape (0.5f);
CheckDefaultRectangle ("SetSigmaBellShape", pgb.Rectangle);
}
}
