protected override bool OnExposeEvent(Gdk.EventExpose ev)
{
base.OnExposeEvent(ev);
if (thumbnail == null)
{
UpdateThumbnail();
}
Rectangle rect = GdkWindow.GetBounds();
Cairo.PointD pos = PositionToClientPt(Position);
Cairo.Color black = new Cairo.Color(0, 0, 0);
using (Cairo.Context g = CairoHelper.Create(GdkWindow)) {
//background
g.SetSource(thumbnail, 0.0, 0.0);
g.Paint();
g.DrawRectangle(new Cairo.Rectangle(rect.X + 1, rect.Y + 1, rect.Width - 1, rect.Height - 1), new Cairo.Color(.75, .75, .75), 1);
g.DrawRectangle(new Cairo.Rectangle(rect.X + 2, rect.Y + 2, rect.Width - 3, rect.Height - 3), black, 1);
//cursor
g.DrawLine(new Cairo.PointD(pos.X + 1, rect.Top + 2), new Cairo.PointD(pos.X + 1, rect.Bottom - 2), black, 1);
g.DrawLine(new Cairo.PointD(rect.Left + 2, pos.Y + 1), new Cairo.PointD(rect.Right - 2, pos.Y + 1), black, 1);
//point
g.DrawEllipse(new Cairo.Rectangle(pos.X - 1, pos.Y - 1, 3, 3), black, 2);
}
return(true);
}
public override void Draw(Cairo.Context dc)
{
if (TheFill != null)
{
dc.FillEllipse(BB); //TheFill,
}
if (ThePen != null)
{
dc.DrawEllipse(BB); //ThePen,
}
}
public override void Draw(Cairo.Context dc)
{
Pen p = IsSelected ? SelPen : StdPen;
Rect lBB = GetBB(Parent.Height);
// draw lines
if (L1Visible)
{
dc.DrawLine(L1Origin, lBB.Center()); //DashedPen,
}
if (L2Visible)
{
dc.DrawLine(L2Origin, lBB.Center()); //DashedPen,
}
// draw CP
dc.FillEllipse(lBB); //Brushes.Gray,
dc.DrawEllipse(lBB); //p,
}
protected override bool OnExposeEvent(Gdk.EventExpose ev)
{
base.OnExposeEvent(ev);
using (Cairo.Context g = CairoHelper.Create(GdkWindow)) {
Cairo.Rectangle ourRect = Rectangle.Inflate(GdkWindow.GetBounds(), -1, -1).ToCairoRectangle();
double diameter = Math.Min(ourRect.Width, ourRect.Height);
double radius = (diameter / 2.0);
Cairo.PointD center = new Cairo.PointD(
(float)(ourRect.X + radius),
(float)(ourRect.Y + radius));
double theta = (this.angleValue * 2.0 * Math.PI) / 360.0;
Cairo.Rectangle ellipseRect = new Cairo.Rectangle(ourRect.Location(), diameter, diameter);
Cairo.Rectangle ellipseOutlineRect = ellipseRect;
g.DrawEllipse(ellipseOutlineRect, new Cairo.Color(.1, .1, .1), 1);
double endPointRadius = radius - 2;
Cairo.PointD endPoint = new Cairo.PointD(
(float)(center.X + (endPointRadius * Math.Cos(theta))),
(float)(center.Y - (endPointRadius * Math.Sin(theta))));
float gripSize = 2.5f;
Cairo.Rectangle gripEllipseRect = new Cairo.Rectangle(center.X - gripSize, center.Y - gripSize, gripSize * 2, gripSize * 2);
g.FillEllipse(gripEllipseRect, new Cairo.Color(.1, .1, .1));
g.DrawLine(center, endPoint, new Cairo.Color(.1, .1, .1), 1);
}
return(true);
}
/// <summary>
/// Create a cursor icon with a shape that visually represents the tool's thickness.
/// </summary>
/// <param name="imgName">A string containing the name of the tool's icon image to use.</param>
/// <param name="shape">The shape to draw.</param>
/// <param name="shapeWidth">The width of the shape.</param>
/// <param name="imgToShapeX">The horizontal distance between the image's top-left corner and the shape center.</param>
/// <param name="imgToShapeY">The verical distance between the image's top-left corner and the shape center.</param>
/// <param name="shapeX">The X position in the returned Pixbuf that will be the center of the shape.</param>
/// <param name="shapeY">The Y position in the returned Pixbuf that will be the center of the shape.</param>
/// <returns>The new cursor icon with an shape that represents the tool's thickness.</returns>
public static Gdk.Pixbuf CreateIconWithShape(string imgName, CursorShape shape, int shapeWidth,
int imgToShapeX, int imgToShapeY,
out int shapeX, out int shapeY)
{
Gdk.Pixbuf img = PintaCore.Resources.GetIcon(imgName);
double zoom = 1d;
if (PintaCore.Workspace.HasOpenDocuments)
{
zoom = Math.Min(30d, PintaCore.Workspace.ActiveDocument.Workspace.Scale);
}
shapeWidth = (int)Math.Min(800d, ((double)shapeWidth) * zoom);
int halfOfShapeWidth = shapeWidth / 2;
// Calculate bounding boxes around the both image and shape
// relative to the image top-left corner.
Gdk.Rectangle imgBBox = new Gdk.Rectangle(0, 0, img.Width, img.Height);
Gdk.Rectangle shapeBBox = new Gdk.Rectangle(
imgToShapeX - halfOfShapeWidth,
imgToShapeY - halfOfShapeWidth,
shapeWidth,
shapeWidth);
// Inflate shape bounding box to allow for anti-aliasing
shapeBBox.Inflate(2, 2);
// To determine required size of icon,
// find union of the image and shape bounding boxes
// (still relative to image top-left corner)
Gdk.Rectangle iconBBox = imgBBox.Union(shapeBBox);
// Image top-left corner in icon co-ordinates
int imgX = imgBBox.Left - iconBBox.Left;
int imgY = imgBBox.Top - iconBBox.Top;
// Shape center point in icon co-ordinates
shapeX = imgToShapeX - iconBBox.Left;
shapeY = imgToShapeY - iconBBox.Top;
using (var i = CairoExtensions.CreateImageSurface(Cairo.Format.ARGB32, iconBBox.Width, iconBBox.Height)) {
using (var g = new Cairo.Context(i)) {
// Don't show shape if shapeWidth less than 3,
if (shapeWidth > 3)
{
int diam = Math.Max(1, shapeWidth - 2);
Cairo.Rectangle shapeRect = new Cairo.Rectangle(shapeX - halfOfShapeWidth,
shapeY - halfOfShapeWidth,
diam,
diam);
Cairo.Color outerColor = new Cairo.Color(255, 255, 255, 0.75);
Cairo.Color innerColor = new Cairo.Color(0, 0, 0);
switch (shape)
{
case CursorShape.Ellipse:
g.DrawEllipse(shapeRect, outerColor, 2);
shapeRect = shapeRect.Inflate(-1, -1);
g.DrawEllipse(shapeRect, innerColor, 1);
break;
case CursorShape.Rectangle:
g.DrawRectangle(shapeRect, outerColor, 1);
shapeRect = shapeRect.Inflate(-1, -1);
g.DrawRectangle(shapeRect, innerColor, 1);
break;
}
}
// Draw the image
g.DrawPixbuf(img, new Cairo.Point(imgX, imgY));
}
return(CairoExtensions.ToPixbuf(i));
}
}
protected override bool OnExposeEvent(Gdk.EventExpose args)
{
//base.OnPaint(pe);
Cairo.Context dc = Gdk.CairoHelper.Create(args.Window);
// Draw white background
//Graphics dc = pe.Graphics;
dc.IdentityMatrix();
dc.SetSourceRGB(1.0, 1.0, 1.0);
dc.Rectangle(0, 0, Allocation.Width, Allocation.Height);
dc.Fill();
// Draw the raster
Cairo.Matrix t = TheRasterModel.GetTikzToScreenTransform().ToCairoMatrix();
//t.Freeze();
dc.Save();
dc.LineWidth = 0.01; // todo: always 1 pixel
dc.SetSourceRGB(0.7, 0.7, 0.7); // whitesmoke?
{
dc.Transform(t);
TheRasterModel.DrawRaster(
(p1, p2) => { dc.MoveTo(p1.X, p1.Y); dc.LineTo(p2.X, p2.Y); dc.Stroke(); },
(r1, r2) =>
{
dc.DrawEllipse(0, 0, 2 * r1, 2 * r2);
});
}
dc.Restore();
// draw unavailable note
if (TheDisplayModel.IsUnavailable)
{
dc.SetSourceRGB(0, 0, 0);
dc.SelectFontFace("Arial", Cairo.FontSlant.Normal, Cairo.FontWeight.Normal);
//StringFormat f = new StringFormat();
//f.Alignment = StringAlignment.Center;
//f.LineAlignment = StringAlignment.Center;
//dc.DrawString("<Unavailable>", new Font("Arial", 16), Brushes.Black, ClientRectangle, f);
dc.MoveTo(Allocation.Width / 2, Allocation.Height / 2); //todo
dc.ShowText("<Unavailable>");
}
// draw the pdf image
if (TheDisplayModel.IsImageVisible && TheDisplayModel.Bmp != null)
{
Point p = new Point((Allocation.Width - TheDisplayModel.Bmp.Width) / 2, (Allocation.Height - TheDisplayModel.Bmp.Height) / 2);
//dc.DrawImageUnscaled(TheDisplayModel.Bmp, p);
dc.SetSource(TheDisplayModel.Bmp, p.X, p.Y);
//dc.Rectangle(p.X, p.Y, TheDisplayModel.Bmp.Width, TheDisplayModel.Bmp.Height);
dc.Paint();
}
// draw the overlay
if (ShowOverlay)
{
dc.SetSourceRGB(0, 0, 0);
// draw shapes from parsetree
foreach (var osv in OSViews)
{
osv.Draw(dc);
}
// draw (visible) auxiliary shapes
foreach (var ps in PreviewShapes.Where(o => o.Visible))
{
ps.Draw(dc);
}
}
// draw adorner(s)
foreach (var scope in this.OSViews.OfType <OverlayScopeView>().Where(v => v.IsAdornerVisible))
{
dc.SetSourceRGB(0.5, 0.5, 0.5);
dc.LineWidth = 5;
System.Windows.Rect ShowAt = scope.GetBB(Allocation.Height);
ShowAt.Inflate(6, 6);
dc.Rectangle(ShowAt.ToCairoRectangle()); //(PensAndBrushes.AdornerPen, ShowAt.ToRectangleF());
dc.Stroke();
}
// draw the object marker
if (MarkObject_ShowMarker && MarkObject_Marked != null)
{
System.Windows.Rect ShowAt = MarkObject_Marked.GetBB(Allocation.Height);
ShowAt.Inflate(15, 15);
//using (Pen p = new Pen(Brushes.Red, 6))
{
dc.SetSourceRGB(1, 0, 0);
dc.LineWidth = 6;
dc.DrawEllipse(ShowAt);//p,
}
}
((IDisposable)dc.Target).Dispose();
((IDisposable)dc).Dispose();
return(true);
}
public static void DrawEllipse(this Cairo.Context dc, System.Windows.Rect r)
{
dc.DrawEllipse(r.Center().X, r.Center().Y, r.Width, r.Height);
}
