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// HelperMethods.cs
//
// Cut & paste from PangoCairoHelper.
//
// Author:
// Aaron Bockover <abockover@novell.com>
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
using System;
using System.Linq;
using System.Runtime.InteropServices;
using System.Collections.Generic;
namespace MonoDevelop.Components
{
public static class HelperMethods
{
[DllImport(PangoUtil.LIBPANGOCAIRO, CallingConvention=CallingConvention.Cdecl)]
static extern void pango_cairo_show_layout (IntPtr cr, IntPtr layout);
public static void ShowLayout (this Cairo.Context cr, Pango.Layout layout)
{
pango_cairo_show_layout (cr == null ? IntPtr.Zero : cr.Handle, layout == null ? IntPtr.Zero : layout.Handle);
}
[DllImport(PangoUtil.LIBPANGOCAIRO, CallingConvention=CallingConvention.Cdecl)]
static extern IntPtr pango_cairo_create_layout (IntPtr cr);
public static Pango.Layout CreateLayout (this Cairo.Context cr)
{
IntPtr raw_ret = pango_cairo_create_layout (cr == null ? IntPtr.Zero : cr.Handle);
return GLib.Object.GetObject (raw_ret) as Pango.Layout;
}
[DllImport(PangoUtil.LIBPANGOCAIRO, CallingConvention=CallingConvention.Cdecl)]
static extern void pango_cairo_layout_path (IntPtr cr, IntPtr layout);
public static void LayoutPath (this Cairo.Context cr, Pango.Layout layout)
{
pango_cairo_layout_path (cr == null ? IntPtr.Zero : cr.Handle, layout == null ? IntPtr.Zero : layout.Handle);
}
[DllImport(PangoUtil.LIBPANGOCAIRO, CallingConvention=CallingConvention.Cdecl)]
static extern void pango_cairo_context_set_resolution (IntPtr pango_context, double dpi);
public static void ContextSetResolution (this Pango.Context context, double dpi)
{
pango_cairo_context_set_resolution (context == null ? IntPtr.Zero : context.Handle, dpi);
}
[DllImport(PangoUtil.LIBPANGOCAIRO, CallingConvention=CallingConvention.Cdecl)]
static extern IntPtr pango_layout_get_context (IntPtr layout);
public static string GetColorString (Gdk.Color color)
{
return string.Format ("#{0:X02}{1:X02}{2:X02}", color.Red / 256, color.Green / 256, color.Blue / 256);
}
public static Pango.Context LayoutGetContext (this Pango.Layout layout)
{
IntPtr handle = pango_layout_get_context (layout.Handle);
return handle.Equals (IntPtr.Zero) ? null : GLib.Object.GetObject (handle) as Pango.Context;
}
public static void DrawLine (this Cairo.Context cr, Cairo.Color color, double x1, double y1, double x2, double y2)
{
cr.SetSourceColor (color);
cr.MoveTo (x1, y1);
cr.LineTo (x2, y2);
cr.Stroke ();
}
public static void Line (this Cairo.Context cr, double x1, double y1, double x2, double y2)
{
cr.MoveTo (x1, y1);
cr.LineTo (x2, y2);
}
public static void SharpLineX (this Cairo.Context cr, double x1, double y1, double x2, double y2)
{
cr.MoveTo (x1 + 0.5, y1);
cr.LineTo (x2 + 0.5, y2);
}
public static void SharpLineY (this Cairo.Context cr, double x1, double y1, double x2, double y2)
{
cr.MoveTo (x1, y1 + 0.5);
cr.LineTo (x2, y2 + 0.5);
}
public static void SetSourceColor (this Cairo.Context cr, Cairo.Color color)
{
cr.SetSourceRGBA (color.R, color.G, color.B, color.A);
}
//this is needed for building against old Mono.Cairo versions
[Obsolete]
public static void SetSource (this Cairo.Context cr, Cairo.Pattern pattern)
{
cr.Pattern = pattern;
}
[Obsolete]
public static Cairo.Surface GetTarget (this Cairo.Context cr)
{
return cr.Target;
}
[Obsolete]
public static void Dispose (this Cairo.Context cr)
{
((IDisposable)cr).Dispose ();
}
}
}
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