public override void SetAsSource(Cairo.Context ctx, Rectangle bounds = default(Rectangle))
{
Cairo.Gradient grad = null;
switch (GradientType)
{
case Type.Vertical:
grad = new Cairo.LinearGradient(bounds.Left, bounds.Top, bounds.Left, bounds.Bottom);
break;
case Type.Horizontal:
grad = new Cairo.LinearGradient(bounds.Left, bounds.Top, bounds.Right, bounds.Top);
break;
case Type.Oblic:
grad = new Cairo.LinearGradient(bounds.Left, bounds.Top, bounds.Right, bounds.Bottom);
break;
case Type.Radial:
throw new NotImplementedException();
}
foreach (ColorStop cs in Stops)
{
grad.AddColorStop(cs.Offset, cs.Color);
}
ctx.SetSource(grad);
grad.Dispose();
}
void DrawShadow(Cairo.Context ctx, Gdk.Rectangle ar, PositionType pos, List <Section> secs)
{
foreach (Section s in secs)
{
Cairo.Gradient pat = null;
Gdk.Rectangle r = ar;
switch (pos)
{
case PositionType.Top:
r.Height = shadowSize > r.Height ? r.Height / 2 : shadowSize;
r.X += s.Offset;
r.Width = s.Size;
pat = new Cairo.LinearGradient(r.X, r.Y, r.X, r.Bottom);
break;
case PositionType.Bottom:
r.Y = r.Bottom - shadowSize;
r.Height = shadowSize > r.Height ? r.Height / 2 : shadowSize;
r.X = r.X + s.Offset;
r.Width = s.Size;
pat = new Cairo.LinearGradient(r.X, r.Bottom, r.X, r.Y);
break;
case PositionType.Left:
r.Width = shadowSize > r.Width ? r.Width / 2 : shadowSize;
r.Y += s.Offset;
r.Height = s.Size;
pat = new Cairo.LinearGradient(r.X, r.Y, r.Right, r.Y);
break;
case PositionType.Right:
r.X = r.Right - shadowSize;
r.Width = shadowSize > r.Width ? r.Width / 2 : shadowSize;
r.Y += s.Offset;
r.Height = s.Size;
pat = new Cairo.LinearGradient(r.Right, r.Y, r.X, r.Y);
break;
}
Cairo.Color c = darkColor.ToCairoColor();
pat.AddColorStop(0, c);
c.A = 0;
pat.AddColorStop(1, c);
ctx.NewPath();
ctx.Rectangle(r.X, r.Y, r.Width, r.Height);
ctx.SetSource(pat);
ctx.Fill();
pat.Dispose();
}
}
private void DrawBackground(Cairo.Context g, Cairo.Rectangle rect, StyleInfo si)
{
// LinearGradientBrush linGrBrush = null;
// SolidBrush sb = null;
if (si.BackgroundColor.IsEmpty)
{
return;
}
g.Save();
Cairo.Color c = si.BackgroundColor.ToCairoColor();
Cairo.Gradient gradient = null;
if (si.BackgroundGradientType != BackgroundGradientTypeEnum.None &&
!si.BackgroundGradientEndColor.IsEmpty)
{
Cairo.Color ec = si.BackgroundGradientEndColor.ToCairoColor();
switch (si.BackgroundGradientType)
{
case BackgroundGradientTypeEnum.LeftRight:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Horizontal);
gradient = new Cairo.LinearGradient(rect.X, rect.Y, rect.X + rect.Width, rect.Y);
break;
case BackgroundGradientTypeEnum.TopBottom:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Vertical);
gradient = new Cairo.LinearGradient(rect.X, rect.Y, rect.X, rect.Y + rect.Height);
break;
case BackgroundGradientTypeEnum.Center:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Horizontal);
throw new NotSupportedException();
// break;
case BackgroundGradientTypeEnum.DiagonalLeft:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.ForwardDiagonal);
gradient = new Cairo.LinearGradient(rect.X, rect.Y, rect.X + rect.Width, rect.Y + rect.Height);
break;
case BackgroundGradientTypeEnum.DiagonalRight:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.BackwardDiagonal);
gradient = new Cairo.LinearGradient(rect.X + rect.Width, rect.Y + rect.Height, rect.X, rect.Y);
break;
case BackgroundGradientTypeEnum.HorizontalCenter:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Horizontal);
throw new NotSupportedException();
// break;
case BackgroundGradientTypeEnum.VerticalCenter:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Vertical);
throw new NotSupportedException();
// break;
default:
break;
}
gradient.AddColorStop(0, c);
gradient.AddColorStop(1, ec);
}
if (gradient != null)
{
//// g.FillRectangle(linGrBrush, rect);
g.FillRectangle(rect, gradient);
gradient.Destroy();
}
else if (!si.BackgroundColor.IsEmpty)
{
g.FillRectangle(rect, c);
// g.DrawRoundedRectangle (rect, 2, c, 1);
// g.FillRoundedRectangle (rect, 8, c);
}
g.Restore();
}
public override void AddColorStop(object backend, double position, Xwt.Drawing.Color color)
{
Cairo.Gradient g = (Cairo.Gradient)backend;
g.AddColorStop(position, color.ToCairoColor());
}
public static void AddColorStop(this Cairo.Gradient grad, double offset, Color c)
{
grad.AddColorStop(offset, new Cairo.Color(c.R, c.G, c.B, c.A));
}
void DrawFocus(Gdk.Window window, Color c)
{
int x, y, width, height;
window.GetPosition(out x, out y);
window.GetSize(out width, out height);
System.Drawing.Rectangle r = new System.Drawing.Rectangle(x, y, width, height);
using (Cairo.Context context = Gdk.CairoHelper.Create(window))
{
uint b = mainBox.BorderWidth;
// Top
using (Cairo.Gradient gradient = createGradient(0.0, 0.0, 0, b, c))
{
context.SetSource(gradient);
context.MoveTo(0, 0);
context.LineTo(r.Width, 0);
context.LineTo(r.Width - b + 1, b);
context.LineTo(b - 1, b);
context.ClosePath();
context.Fill();
}
// Left
using (Cairo.Gradient gradient = createGradient(0.0, 0.0, b, 0, c))
{
context.SetSource(gradient);
context.MoveTo(0, 0);
context.LineTo(b, b - 1);
context.LineTo(b, r.Height - b + 1);
context.LineTo(0, r.Height);
context.ClosePath();
context.Fill();
}
// Bottom
using (Cairo.Gradient gradient = createGradient(0.0, r.Height, 0, r.Height - b, c))
{
context.SetSource(gradient);
context.MoveTo(0, r.Height);
context.LineTo(b - 1, r.Height - b);
context.LineTo(r.Width - b + 1, r.Height - b);
context.LineTo(r.Width, r.Height);
context.ClosePath();
context.Fill();
}
// Right
using (Cairo.Gradient gradient = createGradient(r.Width, 0, r.Width - b, 0, c))
{
context.SetSource(gradient);
context.MoveTo(r.Width, 0);
context.LineTo(r.Width - b, b - 1);
context.LineTo(r.Width - b, r.Height - b + 1);
context.LineTo(r.Width, r.Height);
context.ClosePath();
context.Fill();
}
}
}