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//
// CairoConversion.cs
//
// Author:
// Lluis Sanchez <lluis@xamarin.com>
//
// Copyright (c) 2012 Xamarin Inc
//
// 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 Xwt.Drawing;
namespace Xwt.CairoBackend
{
public static class CairoConversion
{
public static Cairo.Color ToCairoColor (this Color col)
{
return new Cairo.Color (col.Red, col.Green, col.Blue, col.Alpha);
}
public static Cairo.Color ToCairoColor (this Gdk.Color color)
{
return new Cairo.Color(
(double)(color.Red >> 8) / 255.0,
(double)(color.Green >> 8) / 255.0,
(double)(color.Blue >> 8) / 255.0);
}
#if XWT_GTK3
public static Cairo.Color ToCairoColor (this Gdk.RGBA color)
{
return new Cairo.Color (color.Red, color.Green, color.Blue, color.Alpha);
}
#endif
public static void SelectFont (this Cairo.Context ctx, Font font)
{
Cairo.FontSlant slant;
switch (font.Style) {
case FontStyle.Oblique: slant = Cairo.FontSlant.Oblique; break;
case FontStyle.Italic: slant = Cairo.FontSlant.Italic; break;
default: slant = Cairo.FontSlant.Normal; break;
}
Cairo.FontWeight w = font.Weight >= FontWeight.Bold ? Cairo.FontWeight.Bold : Cairo.FontWeight.Normal;
ctx.SelectFontFace (font.Family, slant, w);
}
public static void RoundedRectangle(this Cairo.Context cr, double x, double y, double w, double h, double r)
{
if(r < 0.0001) {
cr.Rectangle(x, y, w, h);
return;
}
cr.MoveTo(x + r, y);
cr.Arc(x + w - r, y + r, r, Math.PI * 1.5, Math.PI * 2);
cr.Arc(x + w - r, y + h - r, r, 0, Math.PI * 0.5);
cr.Arc(x + r, y + h - r, r, Math.PI * 0.5, Math.PI);
cr.Arc(x + r, y + r, r, Math.PI, Math.PI * 1.5);
}
}
}
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