maui-linux/Xamarin.Forms.Platform.GTK/GtkPlatformServices.cs

120 строки
2.7 KiB
C#
Исходник Обычный вид История

2017-09-28 14:52:27 +03:00
using System;
using System.IO;
using System.Net.Http;
using System.Reflection;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Platform.GTK
{
internal class GtkPlatformServices : IPlatformServices
{
private static readonly MD5CryptoServiceProvider Checksum = new MD5CryptoServiceProvider();
public bool IsInvokeRequired => Thread.CurrentThread.IsBackground;
public string RuntimePlatform => Device.GTK;
public void BeginInvokeOnMainThread(Action action)
{
GLib.Idle.Add(delegate { action(); return false; });
}
public Ticker CreateTicker()
{
return new GtkTicker();
}
public Assembly[] GetAssemblies()
{
return AppDomain.CurrentDomain.GetAssemblies();
}
public string GetMD5Hash(string input)
{
var bytes = Checksum.ComputeHash(Encoding.UTF8.GetBytes(input));
var ret = new char[32];
for (var i = 0; i < 16; i++)
{
ret[i * 2] = (char)Hex(bytes[i] >> 4);
ret[i * 2 + 1] = (char)Hex(bytes[i] & 0xf);
}
return new string(ret);
}
public double GetNamedSize(NamedSize size, Type targetElementType, bool useOldSizes)
{
switch (size)
{
case NamedSize.Default:
return 11;
case NamedSize.Micro:
return 12;
case NamedSize.Small:
return 14;
case NamedSize.Medium:
return 17;
case NamedSize.Large:
return 22;
default:
throw new ArgumentOutOfRangeException(nameof(size));
}
}
public async Task<Stream> GetStreamAsync(Uri uri, CancellationToken cancellationToken)
{
using (var client = new HttpClient())
{
HttpResponseMessage streamResponse = await client.GetAsync(uri.AbsoluteUri).ConfigureAwait(false);
if (!streamResponse.IsSuccessStatusCode)
{
Log.Warning("HTTP Request", $"Could not retrieve {uri}, status code {streamResponse.StatusCode}");
return null;
}
return await streamResponse.Content.ReadAsStreamAsync().ConfigureAwait(false);
}
}
public IIsolatedStorageFile GetUserStoreForApplication()
{
return new GtkIsolatedStorageFile();
}
public void OpenUriAction(Uri uri)
{
System.Diagnostics.Process.Start(uri.AbsoluteUri);
}
public void StartTimer(TimeSpan interval, Func<bool> callback)
{
GLib.Timeout.Add((uint)interval.TotalMilliseconds, () =>
{
var result = callback();
return result;
});
}
private static int Hex(int v)
{
if (v < 10)
return '0' + v;
return 'a' + v - 10;
}
public void QuitApplication()
{
Gtk.Application.Quit();
}
public SizeRequest GetNativeSize(VisualElement view, double widthConstraint, double heightConstraint)
{
return Platform.GetNativeSize(view, widthConstraint, heightConstraint);
}
}
}