public override void Draw(Graphics gr, bool showSelection = true)
{
base.Draw(gr, showSelection);
int min = ZoomRectangle.Width.Min(ZoomRectangle.Height);
min = min / 2;
Point topleft = ZoomRectangle.Center();
topleft.X -= min / 2;
topleft.Y -= 3;
target = new Rectangle(topleft, new Size(min, min));
Point innerTopLeft = target.Center();
innerTopLeft.Offset(-min / 4, -min / 4);
Rectangle targetInner = new Rectangle(innerTopLeft, new Size(min / 2, min / 2));
Brush fillBrush = new SolidBrush(Color.White);
Brush middleTarget = new SolidBrush(Color.Red);
Pen borderPen = new Pen(Color.Red);
gr.FillEllipse(fillBrush, target);
gr.FillEllipse(middleTarget, targetInner);
gr.DrawEllipse(borderPen, target);
fillBrush.Dispose();
borderPen.Dispose();
middleTarget.Dispose();
}
public virtual List <ShapeAnchor> GetAnchors()
{
List <ShapeAnchor> anchors = new List <ShapeAnchor>();
Rectangle r;
Size anchorSize = new Size(anchorWidthHeight, anchorWidthHeight);
if (HasCornerAnchors)
{
r = new Rectangle(ZoomRectangle.TopLeftCorner(), anchorSize);
anchors.Add(new ShapeAnchor(GripType.TopLeft, r, Cursors.SizeNWSE));
r = new Rectangle(ZoomRectangle.TopRightCorner().Move(-anchorWidthHeight, 0), anchorSize);
anchors.Add(new ShapeAnchor(GripType.TopRight, r, Cursors.SizeNESW));
r = new Rectangle(ZoomRectangle.BottomLeftCorner().Move(0, -anchorWidthHeight), anchorSize);
anchors.Add(new ShapeAnchor(GripType.BottomLeft, r, Cursors.SizeNESW));
r = new Rectangle(ZoomRectangle.BottomRightCorner().Move(-anchorWidthHeight, -anchorWidthHeight), anchorSize);
anchors.Add(new ShapeAnchor(GripType.BottomRight, r, Cursors.SizeNWSE));
}
if (HasCenterAnchors || HasLeftRightAnchors)
{
r = new Rectangle(ZoomRectangle.LeftMiddle().Move(0, -anchorWidthHeight / 2), anchorSize);
anchors.Add(new ShapeAnchor(GripType.LeftMiddle, r, Cursors.SizeWE));
r = new Rectangle(ZoomRectangle.RightMiddle().Move(-anchorWidthHeight, -anchorWidthHeight / 2), anchorSize);
anchors.Add(new ShapeAnchor(GripType.RightMiddle, r, Cursors.SizeWE));
}
if (HasCenterAnchors || HasTopBottomAnchors)
{
r = new Rectangle(ZoomRectangle.TopMiddle().Move(-anchorWidthHeight / 2, 0), anchorSize);
anchors.Add(new ShapeAnchor(GripType.TopMiddle, r, Cursors.SizeNS));
r = new Rectangle(ZoomRectangle.BottomMiddle().Move(-anchorWidthHeight / 2, -anchorWidthHeight), anchorSize);
anchors.Add(new ShapeAnchor(GripType.BottomMiddle, r, Cursors.SizeNS));
}
if (HasCenterAnchor)
{
r = new Rectangle(ZoomRectangle.Center().Move(-anchorWidthHeight / 2, -anchorWidthHeight / 2), anchorSize);
anchors.Add(new ShapeAnchor(GripType.Center, r, Cursors.Cross));
}
return(anchors);
}
protected virtual void DrawText(Graphics gr, string text, Font textFont, Color textColor, ContentAlignment textAlign)
{
SizeF size = gr.MeasureString(text, textFont);
Brush brush = new SolidBrush(textColor);
Point textpos;
Font font = textFont;
bool disposeFont = false;
// TODO: Should we just create the font and dispose it every time we draw?
if (canvas.Controller.Zoom != 100)
{
font = new Font(textFont.FontFamily, textFont.Size * canvas.Controller.Zoom / 100, textFont.Style);
disposeFont = true;
}
// TextRenderer is terrible when font is bolded. Not sure why.
// Would be great to use this, but the rendering is so bad, I won't.
// Some info here:
// http://stackoverflow.com/questions/9038125/asp-net-textrenderer-drawtext-awful-text-images
//gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//gr.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit; // <-- important!
//gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
//gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
//gr.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
//gr.TextContrast = 0;
//TextFormatFlags flags = TextFormatFlags.Right | TextFormatFlags.VerticalCenter | TextFormatFlags.WordBreak;
//TextRenderer.DrawText(gr, Text, TextFont, DisplayRectangle, TextColor, flags);
switch (textAlign)
{
case ContentAlignment.TopLeft:
textpos = ZoomRectangle.TopLeftCorner().Move(5, 5);
break;
case ContentAlignment.TopCenter:
textpos = ZoomRectangle.TopMiddle().Move((int)(-size.Width / 2), 5);
break;
case ContentAlignment.TopRight:
textpos = ZoomRectangle.TopRightCorner().Move((int)(-(size.Width + 5)), 5);
break;
case ContentAlignment.MiddleLeft:
textpos = ZoomRectangle.LeftMiddle().Move(5, (int)(-size.Height / 2));
break;
case ContentAlignment.MiddleCenter:
textpos = ZoomRectangle.Center().Move((int)(-size.Width / 2), (int)(-size.Height / 2));
break;
case ContentAlignment.MiddleRight:
textpos = ZoomRectangle.RightMiddle().Move((int)(-(size.Width + 5)), (int)(-size.Height / 2));
break;
case ContentAlignment.BottomLeft:
textpos = ZoomRectangle.BottomLeftCorner().Move(5, (int)-(size.Height + 5));
break;
case ContentAlignment.BottomCenter:
textpos = ZoomRectangle.BottomMiddle().Move((int)(-size.Width / 2), (int)-(size.Height + 5));
break;
case ContentAlignment.BottomRight:
textpos = ZoomRectangle.BottomRightCorner().Move((int)(-(size.Width + 5)), (int)-(size.Height + 5));
break;
default: // middle center
textpos = ZoomRectangle.Center().Move((int)(-size.Width / 2), (int)(-size.Height / 2));
break;
}
TextFormatFlags tff = TextFormatFlags.Default;
switch (textAlign)
{
case ContentAlignment.TopLeft:
tff |= TextFormatFlags.Left;
break;
case ContentAlignment.TopCenter:
tff |= TextFormatFlags.Top | TextFormatFlags.HorizontalCenter;
break;
case ContentAlignment.TopRight:
tff |= TextFormatFlags.Top | TextFormatFlags.Right;
break;
case ContentAlignment.MiddleLeft:
tff |= TextFormatFlags.VerticalCenter | TextFormatFlags.Left;
break;
case ContentAlignment.MiddleCenter:
tff |= TextFormatFlags.VerticalCenter | TextFormatFlags.HorizontalCenter;
break;
case ContentAlignment.MiddleRight:
tff |= TextFormatFlags.VerticalCenter | TextFormatFlags.Right;
break;
case ContentAlignment.BottomLeft:
tff |= TextFormatFlags.Bottom | TextFormatFlags.Left;
break;
case ContentAlignment.BottomCenter:
tff |= TextFormatFlags.Bottom | TextFormatFlags.HorizontalCenter;
break;
case ContentAlignment.BottomRight:
tff |= TextFormatFlags.Bottom | TextFormatFlags.Right;
break;
default: // middle center
tff |= TextFormatFlags.VerticalCenter | TextFormatFlags.HorizontalCenter;
break;
}
TextRenderer.DrawText(gr, text, font, ZoomRectangle.Grow(-3), textColor, FillColor, tff);
// gr.DrawString(text, textFont, brush, textpos);
brush.Dispose();
if (disposeFont)
{
font.Dispose();
}
}