add a test for lot of text rendering

src/Examples/Demos/ManyTextRender.cs

@@ -0,0 +1,130 @@
+/*
+* MIT License
+*
+* Copyright (c) 2009-2018 Jingwood, unvell.com. All right reserved.
+*
+* 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.Collections.Generic;
+using System.Drawing;
+using System.Windows.Forms;
+using unvell.D2DLib;
+using unvell.D2DLib.WinForm;
+
+namespace unvell.D2DLib.Examples.Demos
+{
+	public partial class ManyTextRender : DemoForm
+	{
+		private static readonly Random rand = new Random();
+		List<Node> nodes = new List<Node>();
+
+		public ManyTextRender()
+		{
+			Text = "ManyTextRender - d2dlib Examples";
+			BackColor = Color.Black;
+
+			AnimationDraw = true;
+			ShowFPS = true;
+		}
+
+		protected override void OnLoad(EventArgs e)
+		{
+			base.OnLoad(e);
+
+			const int NODE_COUNT = 1000;
+
+			for (int i = 0; i < NODE_COUNT; i++)
+			{
+				var node = new Node()
+				{
+					text = "Node" + i,
+					rect = new D2DRect(rand.Next(ClientRectangle.Width), rand.Next(ClientRectangle.Height), 100, 20),
+					color = D2DColor.Randomly(),
+					fontSize = rand.Next(12, 24),
+					speed = (float)(rand.NextDouble() * 2.0),
+				};
+
+				nodes.Add(node);
+			}
+		}
+
+		protected override void OnRender(D2DGraphics g)
+		{
+			base.OnRender(g);
+
+			using (var font = new Font("Arial", 12))
+			{
+				foreach (var node in nodes)
+				{
+					using (var brush = this.Device.CreateSolidColorBrush(node.color))
+					{
+						var rect = node.rect;
+
+						//rect.Size = g.MeasureText(node.text, this.Font.Name, node.fontSize, node.rect.Size);
+						//rect.Width += 10;
+						//rect.Height += 10;
+
+						//g.FillRectangle(rect, brush);
+
+
+						//using (var f = new Font(this.Font.FontFamily, fontSize))
+						//{
+						var textRect = rect;
+						textRect.X += 5;
+						textRect.Y += 5;
+						g.DrawText(node.text, node.color, textRect.X, textRect.Y);
+						//}
+					}
+				}
+			}
+		}
+
+		protected override void OnFrame()
+		{
+			base.OnFrame();
+
+			foreach (var node in nodes)
+			{
+				node.rect.X += node.speed;
+
+				if (node.rect.X > ClientRectangle.Width)
+				{
+					node.rect.X = 0 - node.rect.Width - 10;
+				}
+			}
+		}
+
+		protected override void OnMouseUp(MouseEventArgs e)
+		{
+			base.OnMouseUp(e);
+		}
+	}
+
+	class Node
+	{
+		public string text;
+		public D2DRect rect;
+		public D2DColor color;
+		public float fontSize;
+		public float speed;
+	}
+
+}

src/Examples/Examples.csproj

@@ -120,6 +120,9 @@
     <Compile Include="D2DHybridForm.cs">
       <SubType>Form</SubType>
     </Compile>
+    <Compile Include="Demos\ManyTextRender.cs">
+      <SubType>Form</SubType>
+    </Compile>
     <Compile Include="Demos\HelloWorld.cs">
       <SubType>Form</SubType>
     </Compile>