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C# CGBitmapContext.RestoreState方法代码示例

本文整理汇总了C#中CGBitmapContext.RestoreState方法的典型用法代码示例。如果您正苦于以下问题:C# CGBitmapContext.RestoreState方法的具体用法?C# CGBitmapContext.RestoreState怎么用?C# CGBitmapContext.RestoreState使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在CGBitmapContext的用法示例。


在下文中一共展示了CGBitmapContext.RestoreState方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: DrawScreen

		protected void DrawScreen ()
		{

			// create our offscreen bitmap context
			// size
			CGSize bitmapSize = new CGSize (imageView.Frame.Size);
			using (CGBitmapContext context = new CGBitmapContext (IntPtr.Zero, (int)bitmapSize.Width, (int)bitmapSize.Height, 8, (int)(4 * bitmapSize.Width), CGColorSpace.CreateDeviceRGB (), CGImageAlphaInfo.PremultipliedFirst)) {

				// save the state of the context while we change the CTM
				context.SaveState ();

				// draw our circle
				context.SetFillColor (1, 0, 0, 1);
				context.TranslateCTM (currentLocation.X, currentLocation.Y);
				context.RotateCTM (currentRotation);
				context.ScaleCTM (currentScale, currentScale);
				context.FillRect (new CGRect (-10, -10, 20, 20));

				// restore our transformations
				context.RestoreState ();

				// draw our coordinates for reference
				DrawCoordinateSpace (context);

				// output the drawing to the view
				imageView.Image = UIImage.FromImage (context.ToImage ());
			}
		}
开发者ID:Rajneesh360Logica,项目名称:monotouch-samples,代码行数:28,代码来源:Controller.cs

示例2: ViewDidLoad

		public override void ViewDidLoad ()
		{
			base.ViewDidLoad ();
			
			// set the background color of the view to white
			View.BackgroundColor = UIColor.White;
			
			// instantiate a new image view that takes up the whole screen and add it to 
			// the view hierarchy
			RectangleF imageViewFrame = new RectangleF (0, -NavigationController.NavigationBar.Frame.Height, View.Frame.Width, View.Frame.Height);
			imageView = new UIImageView (imageViewFrame);
			View.AddSubview (imageView);
			
			// create our offscreen bitmap context
			// size
			SizeF bitmapSize = new SizeF (View.Frame.Size);
			using (CGBitmapContext context = new CGBitmapContext (IntPtr.Zero, (int)bitmapSize.Width, (int)bitmapSize.Height, 8, (int)(4 * bitmapSize.Width), CGColorSpace.CreateDeviceRGB (), CGImageAlphaInfo.PremultipliedFirst)) {

				//==== create a grayscale shadow
				// 1) save graphics state
				context.SaveState ();
				// 2) set shadow context for offset and blur
				context.SetShadow (new SizeF (10, -10), 15);
				// 3) perform your drawing operation
				context.SetFillColor (.3f, .3f, .9f, 1);
				context.FillRect (new RectangleF (100, 600, 300, 250));
				// 4) restore the graphics state
				context.RestoreState ();
				
				//==== create a color shadow
				// 1) save graphics state
				context.SaveState ();
				// 2) set shadow context for offset and blur
				context.SetShadowWithColor(new SizeF (15, -15), 10, UIColor.Blue.CGColor);
				// 3) perform your drawing operation
				context.SelectFont ("Helvetica-Bold", 40, CGTextEncoding.MacRoman);
				context.SetTextDrawingMode (CGTextDrawingMode.Fill);
				string text = "Shadows are fun and easy!";
				context.ShowTextAtPoint (150, 200, text, text.Length);
				// 4) restore the graphics state
				context.RestoreState ();
				
				
				// output the drawing to the view
				imageView.Image = UIImage.FromImage (context.ToImage ());
			}
		}
开发者ID:GSerjo,项目名称:monotouch-samples,代码行数:47,代码来源:Controller.cs


注:本文中的CGBitmapContext.RestoreState方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。