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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Xml.Serialization;
using Cairo;
namespace go
{
public class GroupBox : Border
{
#region CTOR
public GroupBox() : base (){
}
public GroupBox(string _title = "GroupBox")
: base()
{
Text = _title;
}
#endregion
#region private fields
string _title;
Font _font;
#endregion
#region public properties
[XmlAttributeAttribute][DefaultValue("GroupBox")]
public string Text
{
get { return _title; }
set
{
_title = value;
registerForGraphicUpdate();
}
}
[XmlAttributeAttribute()][DefaultValue("droid,12")]
public Font Font {
get { return _font; }
set { _font = value; }
}
#endregion
Size titleSize {
get {
#if _WIN32 || _WIN64
byte[] txt = System.Text.UTF8Encoding.UTF8.GetBytes(_title);
#endif
Size s;
using (ImageSurface img = new ImageSurface (Format.Argb32, 1, 1)) {
using (Context gr = new Context (img)) {
gr.SelectFontFace (Font.Name, Font.Slant, Font.Wheight);
gr.SetFontSize (Font.Size);
TextExtents te;
#if _WIN32 || _WIN64
te = gr.TextExtents(txt);
#elif __linux__
te = gr.TextExtents (Text);
#endif
FontExtents fe = gr.FontExtents;
s = new Size ((int)Math.Ceiling (te.XAdvance), (int)Math.Ceiling (fe.Height));
}
}
return s;// +borderWidth;
}
}
#region GraphicObject overrides
public override Rectangle ClientRectangle {
get {
Size ts = titleSize;
Rectangle cb = Slot.Size;
cb.Y = ts.Height;
cb.Height -= ts.Height;
cb.Inflate ( - Margin);
return cb;
}
}
protected override Size measureRawSize ()
{
Size raw = base.measureRawSize ();
return raw > 0 ? raw + titleSize : raw;
}
protected override void onDraw (Context gr)
{
//base.onDraw (gr);
byte[] txt = System.Text.UTF8Encoding.UTF8.GetBytes(Text);
Rectangle r = new Rectangle(Slot.Size);
if (BorderWidth > 0)
r.Inflate (-BorderWidth / 2);
//gr.Rotate(Math.PI);
gr.SelectFontFace (Font.Name, Font.Slant, Font.Wheight);
gr.SetFontSize (Font.Size);
FontExtents fe = gr.FontExtents;
TextExtents te = gr.TextExtents(Text);
gr.Antialias = Antialias.Subpixel;
gr.LineWidth = BorderWidth;
gr.Color = Background;
Rectangle rTitle = r;
int th = (int)Math.Ceiling(fe.Height / 2);
r.Y += th;
r.Height -= th;
CairoHelpers.CairoRectangle (gr, r, CornerRadius);
gr.Fill();
const int titleGap = 5;
if (BorderWidth > 0)
{
gr.Color = BorderColor;
rTitle.X = r.X + titleGap;
rTitle.Width = (int)Math.Ceiling(te.XAdvance) + 2 * titleGap;
rTitle.Height = (int)Math.Ceiling(fe.Height);
gr.Save();
gr.FillRule = FillRule.EvenOdd;
gr.Rectangle(new Rectangle(Slot.Size));
gr.Rectangle(rTitle);
gr.Clip();
CairoHelpers.CairoRectangle (gr, r, CornerRadius);
gr.Stroke();
gr.Restore();
}
gr.MoveTo(rTitle.X + titleGap, rTitle.Y + (int)Math.Ceiling(fe.Height - fe.Descent));
#if _WIN32 || _WIN64
gr.ShowText(txt);
#elif __linux__
gr.ShowText(Text);
#endif
gr.Color = Foreground;
gr.Fill();
}
#endregion
public override string ToString()
{
return base.ToString() + ": " + this.Text;
}
}
}
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