summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Platform.Tizen/Forms.cs
blob: 57fc6050a4b98d2d45791c9e70f88a2224cb5dc1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using Xamarin.Forms.Internals;
using ElmSharp;
using Tizen.Applications;
using TSystemInfo = Tizen.System.SystemInfo;

namespace Xamarin.Forms.Platform.Tizen
{
	public static class Forms
	{
		static Lazy<string> s_profile = new Lazy<string>(() =>
		{
			//TODO : Fix me if elm_config_profile_get() unavailable
			return Elementary.GetProfile();
		});

		static Lazy<int> s_dpi = new Lazy<int>(() =>
		{
			int dpi = 0;
			if (s_profile.Value == "tv")
			{
				// Use fixed DPI value (72) if TV profile
				return 72;
			}
			TSystemInfo.TryGetValue<int>("http://tizen.org/feature/screen.dpi", out dpi);
			return dpi;
		});

		static Lazy<double> s_elmScale = new Lazy<double>(() =>
		{
			// 72.0 is from EFL which is using fixed DPI value (72.0) to determine font size internally. Thus, we are restoring the size by deviding the DPI by 72.0 here.
			return s_dpi.Value / 72.0 / Elementary.GetScale();
		});

		class TizenDeviceInfo : DeviceInfo
		{
			readonly Size pixelScreenSize;

			readonly Size scaledScreenSize;

			readonly double scalingFactor;

			readonly string profile;

			public override Size PixelScreenSize
			{
				get
				{
					return this.pixelScreenSize;
				}
			}

			public override Size ScaledScreenSize
			{
				get
				{
					return this.scaledScreenSize;
				}
			}

			public override double ScalingFactor
			{
				get
				{
					return this.scalingFactor;
				}
			}

			public string Profile
			{
				get
				{
					return this.profile;
				}
			}

			public TizenDeviceInfo(FormsApplication formsApplication)
			{
				int width = 0;
				int height = 0;

				TSystemInfo.TryGetValue("http://tizen.org/feature/screen.width", out width);
				TSystemInfo.TryGetValue("http://tizen.org/feature/screen.height", out height);

				scalingFactor = 1.0;  // scaling is disabled, we're using pixels as Xamarin's geometry units
				if (_useDeviceIndependentPixel)
				{
					scalingFactor = s_dpi.Value / 160.0;
				}

				pixelScreenSize = new Size(width, height);
				scaledScreenSize = new Size(width / scalingFactor, height / scalingFactor);
				profile = s_profile.Value;
			}
		}

		static bool _useDeviceIndependentPixel = false;

		public static event EventHandler<ViewInitializedEventArgs> ViewInitialized;

		public static FormsApplication Context
		{
			get;
			internal set;
		}

		public static bool IsInitialized
		{
			get;
			private set;
		}

		internal static TizenTitleBarVisibility TitleBarVisibility
		{
			get;
			private set;
		}

		internal static void SendViewInitialized(this VisualElement self, EvasObject nativeView)
		{
			EventHandler<ViewInitializedEventArgs> viewInitialized = Forms.ViewInitialized;
			if (viewInitialized != null)
			{
				viewInitialized.Invoke(self, new ViewInitializedEventArgs
				{
					View = self,
					NativeView = nativeView
				});
			}
		}

		public static void SetTitleBarVisibility(TizenTitleBarVisibility visibility)
		{
			TitleBarVisibility = visibility;
		}

		public static void Init(FormsApplication application)
		{
			Init(application, false);
		}

		public static void Init(FormsApplication application, bool useDeviceIndependentPixel)
		{
			_useDeviceIndependentPixel = useDeviceIndependentPixel;
			SetupInit(application);
		}

		static void SetupInit(FormsApplication application)
		{
			Color.SetAccent(GetAccentColor());

			Context = application;

			if (!IsInitialized)
			{
				Internals.Log.Listeners.Add(new XamarinLogListener());
				if (System.Threading.SynchronizationContext.Current == null)
				{
					TizenSynchronizationContext.Initialize();
				}
				Elementary.Initialize();
				Elementary.ThemeOverlay();
			}

			// In .NETCore, AppDomain feature is not supported.
			// The list of assemblies returned by AppDomain.GetAssemblies() method should be registered manually.
			// The assembly of the executing application and referenced assemblies of it are added into the list here.
			// TODO: AppDomain is comming back in NETStandard2.0. This logic should be changed at that time.
			TizenPlatformServices.AppDomain.CurrentDomain.RegisterAssemblyRecursively(application.GetType().GetTypeInfo().Assembly);

			Device.PlatformServices = new TizenPlatformServices(); ;
			if (Device.info != null)
			{
				((TizenDeviceInfo)Device.info).Dispose();
				Device.info = null;
			}

			Device.Info = new Forms.TizenDeviceInfo(application);

			if (!Forms.IsInitialized)
			{
				Registrar.RegisterAll(new Type[]
				{
					typeof(ExportRendererAttribute),
					typeof(ExportImageSourceHandlerAttribute),
					typeof(ExportCellAttribute),
					typeof(ExportHandlerAttribute)
				});
			}

			// TODO: We should consider various tizen profiles such as TV, Wearable and so on.
			string profile = ((TizenDeviceInfo)Device.Info).Profile;
			if (profile == "mobile")
			{
				Device.SetIdiom(TargetIdiom.Phone);
			}
			else if (profile == "tv")
			{
				Device.SetIdiom(TargetIdiom.TV);
			}
			else if (profile == "desktop")
			{
				Device.SetIdiom(TargetIdiom.Desktop);
			}
			else
			{
				Device.SetIdiom(TargetIdiom.Unsupported);
			}

			ExpressionSearch.Default = new TizenExpressionSearch();
			IsInitialized = true;
		}

		static Color GetAccentColor()
		{
			// On Windows Phone, this is the complementary color chosen by the user.
			// Good Windows Phone applications use this as part of their styling to provide a native look and feel.
			// On iOS and Android this instance is set to a contrasting color that is visible on the default
			// background but is not the same as the default text color.

			// TODO: implement me
			return Color.Black;
		}

		/// <summary>
		/// Converts the dp into pixel considering current DPI value.
		/// </summary>
		/// <remarks>
		/// Use this API if you want to get pixel size without scaling factor.
		/// </remarks>
		/// <param name="dp"></param>
		/// <returns></returns>
		internal static int ConvertToPixel(double dp)
		{
			return (int)Math.Round(dp * s_dpi.Value / 160.0);
		}

		/// <summary>
		/// Converts the dp into pixel by using scaling factor.
		/// </summary>
		/// <remarks>
		/// Use this API if you want to get pixel size from dp by using scaling factor.
		/// If the scaling factor is 1.0 by user setting, the same value is returned. This is mean that user doesn't want to pixel independent metric.
		/// </remarks>
		/// <param name="dp"></param>
		/// <returns></returns>
		internal static int ConvertToScaledPixel(double dp)
		{
			return (int)Math.Round(dp * Device.Info.ScalingFactor);
		}

		/// <summary>
		/// Converts the pixel into dp value by using scaling factor.
		/// </summary>
		/// <remarks>
		/// If the scaling factor is 1.0 by user setting, the same value is returned. This is mean that user doesn't want to pixel independent metric.
		/// </remarks>
		/// <param name="pixel"></param>
		/// <returns></returns>
		internal static double ConvertToScaledDP(int pixel)
		{
			return pixel / Device.Info.ScalingFactor;
		}

		/// <summary>
		/// Converts the pixel into dp value by using scaling factor.
		/// </summary>
		/// <remarks>
		/// If the scaling factor is 1.0 by user setting, the same value is returned. This is mean that user doesn't want to pixel independent metric.
		/// </remarks>
		/// <param name="pixel"></param>
		/// <returns></returns>
		internal static double ConvertToScaledDP(double pixel)
		{
			return pixel / Device.Info.ScalingFactor;
		}

		/// <summary>
		/// Converts the sp into EFL's font size metric (EFL point).
		/// </summary>
		/// <param name="sp"></param>
		/// <returns></returns>
		internal static int ConvertToEflFontPoint(double sp)
		{
			return (int)Math.Round(sp * s_elmScale.Value);
		}

		/// <summary>
		/// Convert the EFL's point into sp.
		/// </summary>
		/// <param name="eflPt"></param>
		/// <returns></returns>
		internal static double ConvertToDPFont(int eflPt)
		{
			return eflPt / s_elmScale.Value;
		}
	}

	class TizenExpressionSearch : ExpressionVisitor, IExpressionSearch
	{
		List<object> _results;
		Type _targetType;

		public List<T> FindObjects<T>(Expression expression) where T : class
		{
			_results = new List<object>();
			_targetType = typeof(T);
			Visit(expression);
			return _results.Select(o => o as T).ToList();
		}

		protected override Expression VisitMember(MemberExpression node)
		{
			if (node.Expression is ConstantExpression && node.Member is FieldInfo)
			{
				var container = ((ConstantExpression)node.Expression).Value;
				var value = ((FieldInfo)node.Member).GetValue(container);

				if (_targetType.IsInstanceOfType(value))
					_results.Add(value);
			}
			return base.VisitMember(node);
		}
	}
}