test/NUITestSample/NUITestSample/examples/layouting/custom-layout-root-layer-test.cs

   1 using System;
   2 using Tizen.NUI;
   3 using Tizen.NUI.BaseComponents;
   4
   5 namespace CustomLayoutWithoutAbsoluteLayout
   6 {
   7     public class CustomLayout : LayoutGroup
   8     {
   9         protected override void OnMeasure(MeasureSpecification widthMeasureSpec, MeasureSpecification heightMeasureSpec)
  10         {
  11             var accumulatedWidth = new LayoutLength(0);
  12             var maxHeight = 0;
  13             var measuredWidth = new LayoutLength(0);
  14             LayoutLength measuredHeight = new LayoutLength(0);
  15             MeasureSpecification.ModeType widthMode = widthMeasureSpec.Mode;
  16             MeasureSpecification.ModeType heightMode = heightMeasureSpec.Mode;
  17
  18             bool isWidthExact = (widthMode == MeasureSpecification.ModeType.EXACTLY);
  19             bool isHeightExact = (heightMode == MeasureSpecification.ModeType.EXACTLY);
  20
  21             // In this layout we will:
  22             //  Measuring the layout with the children in a horizontal configuration, one after another
  23             //  Set the required width to be the accumulated width of our children
  24             //  Set the required height to be the maximum height of any of our children
  25
  26             for (uint i = 0; i < ChildCount; ++i)
  27             {
  28                 var childLayout = GetChildAt(i);
  29                 if (childLayout)
  30                 {
  31                     MeasureChild(childLayout, widthMeasureSpec, heightMeasureSpec);
  32                     accumulatedWidth += childLayout.MeasuredWidth;
  33                     maxHeight = System.Math.Max(childLayout.MeasuredHeight.Value, maxHeight);
  34                 }
  35             }
  36
  37             measuredHeight.Value = maxHeight;
  38             measuredWidth = accumulatedWidth;
  39
  40             if (isWidthExact)
  41             {
  42                 measuredWidth = new LayoutLength(widthMeasureSpec.Size);
  43             }
  44
  45             if (isHeightExact)
  46             {
  47                 measuredHeight = new LayoutLength(heightMeasureSpec.Size);
  48             }
  49
  50             // Finally, call this method to set the dimensions we would like
  51             SetMeasuredDimensions(new MeasuredSize(measuredWidth), new MeasuredSize(measuredHeight));
  52         }
  53
  54         protected override void OnLayout(bool changed, LayoutLength left, LayoutLength top, LayoutLength right, LayoutLength bottom)
  55         {
  56             LayoutLength childTop = new LayoutLength(0);
  57             LayoutLength childLeft = new LayoutLength(0);
  58
  59             // We want to vertically align the children to the middle
  60             var height = bottom - top;
  61             var middle = height / 2;
  62
  63             // Horizontally align the children to the middle of the space they are given too
  64             var width = right - left;
  65             uint count = ChildCount;
  66             var childIncrement = 0;
  67             if (count > 0)
  68             {
  69                 childIncrement = width.Value / System.Convert.ToInt32(count);
  70             }
  71             var center = childIncrement / 2;
  72
  73             // Check layout direction
  74             var view = GetOwner();
  75             ViewLayoutDirectionType layoutDirection = view.LayoutDirection;
  76
  77             for (uint i = 0; i < count; i++)
  78             {
  79                 uint itemIndex;
  80                 // If RTL, then layout the last item first
  81                 if (layoutDirection == ViewLayoutDirectionType.RTL)
  82                 {
  83                     itemIndex = count - 1 - i;
  84                 }
  85                 else
  86                 {
  87                     itemIndex = i;
  88                 }
  89
  90                 LayoutItem childLayout = GetChildAt(itemIndex);
  91                 if (childLayout)
  92                 {
  93                     var childWidth = childLayout.MeasuredWidth;
  94                     var childHeight = childLayout.MeasuredHeight;
  95
  96                     childTop = middle - (childHeight / 2);
  97
  98                     var leftPosition = childLeft + center - childWidth / 2;
  99
 100                     childLayout.Layout(leftPosition, childTop, leftPosition + childWidth, childTop + childHeight);
 101                     childLeft += childIncrement;
 102                 }
 103             }
 104         }
 105     }
 106 }
 107
 108 namespace CustomLayoutWithoutAbsoluteLayout
 109 {
 110     static class TestImages
 111     {
 112         //private const string resources = "./res";
 113         public static string resources = Tizen.Applications.Application.Current.DirectoryInfo.Resource;
 114         /// Child image filenames
 115         public static readonly string[] s_images = new string[]
 116         {
 117             resources + "/images/application-icon-101.png",
 118             resources + "/images/application-icon-102.png",
 119             resources + "/images/application-icon-103.png",
 120             resources + "/images/application-icon-104.png"
 121         };
 122     }
 123
 124     class Example : NUIApplication
 125     {
 126         protected override void OnCreate()
 127         {
 128             base.OnCreate();
 129             Initialize();
 130         }
 131
 132         private void Initialize()
 133         {
 134             // Change the background color of Window to White
 135             Window window = Window.Instance;
 136             window.BackgroundColor = Color.White;
 137
 138             //Layer layer = new Layer();
 139
 140             //window.AddLayer(layer);
 141
 142             // Create a new view
 143             View customLayoutView = new View();
 144             customLayoutView.Name = "CustomLayoutView";
 145             customLayoutView.ParentOrigin = ParentOrigin.Center;
 146             customLayoutView.PivotPoint = PivotPoint.Center;
 147             customLayoutView.PositionUsesPivotPoint = true;
 148             // Set our Custom Layout on the view
 149             var layout = new CustomLayout();
 150             customLayoutView.Layout = layout;
 151             customLayoutView.SetProperty(LayoutItemWrapper.ChildProperty.WIDTH_SPECIFICATION, new PropertyValue(-2));  // -2 WRAP_CONTENT
 152             customLayoutView.SetProperty(LayoutItemWrapper.ChildProperty.HEIGHT_SPECIFICATION, new PropertyValue(350));
 153             customLayoutView.BackgroundColor = Color.Blue;
 154             window.Add(customLayoutView);
 155
 156             // Add child image-views to the created view
 157             foreach (String image in TestImages.s_images)
 158             {
 159                 customLayoutView.Add(CreateChildImageView(image, new Size2D(100, 100)));
 160             }
 161         }
 162
 163         /// <summary>
 164         /// Helper function to create ImageViews with given filename and size..<br />
 165         /// </summary>
 166         /// <param name="filename"> The filename of the image to use.</param>
 167         /// <param name="size"> The size that the image should be loaded at.</param>
 168         /// <returns>The created ImageView.</returns>
 169         ImageView CreateChildImageView(String url, Size2D size)
 170         {
 171             ImageView imageView = new ImageView();
 172             ImageVisual imageVisual = new ImageVisual();
 173
 174             imageVisual.URL = url;
 175             imageVisual.DesiredHeight = size.Height;
 176             imageVisual.DesiredWidth = size.Width;
 177             imageView.Image = imageVisual.OutputVisualMap;
 178
 179             imageView.Name = "ImageView";
 180             imageView.HeightResizePolicy = ResizePolicyType.Fixed;
 181             imageView.WidthResizePolicy = ResizePolicyType.Fixed;
 182             return imageView;
 183         }
 184
 185         static void _Main(string[] args)
 186         {
 187             Example simpleLayout = new Example();
 188             simpleLayout.Run(args);
 189         }
 190     }
 191 }
 192
 193