77 lines
2.2 KiB
C#
77 lines
2.2 KiB
C#
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// CustomCellRenderer.cs : C# implementation of an example custom cellrenderer
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// from http://scentric.net/tutorial/sec-custom-cell-renderers.html
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//
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// Author: Todd Berman <tberman@sevenl.net>
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//
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// (c) 2004 Todd Berman
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// adopted from: https://github.com/mono/gtk-sharp/commits/2.99.3/sample/CustomCellRenderer.cs
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using System;
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using Gtk;
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using Gdk;
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using GLib;
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namespace Samples
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{
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public class CustomCellRenderer : CellRenderer
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{
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private float percent;
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[GLib.Property ("percent")]
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public float Percentage {
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get { return percent; }
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set { percent = value; }
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}
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protected override void OnGetSize (Widget widget, ref Rectangle cell_area, out int x_offset, out int y_offset, out int width, out int height)
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{
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base.OnGetSize (widget, ref cell_area, out x_offset, out y_offset, out width, out height);
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int calc_width = (int) this.Xpad * 2 + 100;
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int calc_height = (int) this.Ypad * 2 + 10;
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width = calc_width;
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height = calc_height;
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x_offset = 0;
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y_offset = 0;
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if (!cell_area.Equals (Rectangle.Zero)) {
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x_offset = (int) (this.Xalign * (cell_area.Width - calc_width));
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x_offset = Math.Max (x_offset, 0);
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y_offset = (int) (this.Yalign * (cell_area.Height - calc_height));
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y_offset = Math.Max (y_offset, 0);
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}
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}
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protected override void OnRender (Cairo.Context cr, Widget widget, Rectangle background_area, Rectangle cell_area, CellRendererState flags)
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{
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int x = (int) (cell_area.X + this.Xpad);
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int y = (int) (cell_area.Y + this.Ypad);
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int width = (int) (cell_area.Width - this.Xpad * 2);
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int height = (int) (cell_area.Height - this.Ypad * 2);
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widget.StyleContext.Save ();
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widget.StyleContext.AddClass ("trough");
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widget.StyleContext.RenderBackground (cr, x, y, width, height);
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widget.StyleContext.RenderFrame (cr, x, y, width, height);
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Border padding = widget.StyleContext.GetPadding (StateFlags.Normal);
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x += padding.Left;
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y += padding.Top;
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width -= padding.Left + padding.Right;
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height -= padding.Top + padding.Bottom;
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widget.StyleContext.Restore ();
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widget.StyleContext.Save ();
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widget.StyleContext.AddClass ("progressbar");
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widget.StyleContext.RenderActivity (cr, x, y, (int) (width * Percentage), height);
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widget.StyleContext.Restore ();
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}
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}
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}
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