danwalmsley
8 years ago
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GitHub
GitHub
51 changed files with 548 additions and 322 deletions
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// Copyright (c) The Avalonia Project. All rights reserved.
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// Licensed under the MIT license. See licence.md file in the project root for full license information.
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using System; |
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using System.Globalization; |
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using Avalonia.Utilities; |
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namespace Avalonia |
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{ |
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/// <summary>
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/// Represents a size in device pixels.
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/// </summary>
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public readonly struct PixelSize |
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{ |
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/// <summary>
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/// A size representing zero
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/// </summary>
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public static readonly PixelSize Empty = new PixelSize(0, 0); |
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/// <summary>
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/// Initializes a new instance of the <see cref="PixelSize"/> structure.
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/// </summary>
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/// <param name="width">The width.</param>
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/// <param name="height">The height.</param>
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public PixelSize(int width, int height) |
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{ |
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Width = width; |
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Height = height; |
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} |
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/// <summary>
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/// Gets the aspect ratio of the size.
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/// </summary>
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public double AspectRatio => (double)Width / Height; |
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/// <summary>
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/// Gets the width.
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/// </summary>
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public int Width { get; } |
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/// <summary>
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/// Gets the height.
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/// </summary>
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public int Height { get; } |
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/// <summary>
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/// Checks for equality between two <see cref="PixelSize"/>s.
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/// </summary>
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/// <param name="left">The first size.</param>
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/// <param name="right">The second size.</param>
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/// <returns>True if the sizes are equal; otherwise false.</returns>
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public static bool operator ==(PixelSize left, PixelSize right) |
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{ |
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return left.Width == right.Width && left.Height == right.Height; |
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} |
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/// <summary>
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/// Checks for inequality between two <see cref="Size"/>s.
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/// </summary>
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/// <param name="left">The first size.</param>
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/// <param name="right">The second size.</param>
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/// <returns>True if the sizes are unequal; otherwise false.</returns>
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public static bool operator !=(PixelSize left, PixelSize right) |
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{ |
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return !(left == right); |
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} |
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/// <summary>
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/// Parses a <see cref="PixelSize"/> string.
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/// </summary>
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/// <param name="s">The string.</param>
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/// <returns>The <see cref="PixelSize"/>.</returns>
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public static PixelSize Parse(string s) |
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{ |
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using (var tokenizer = new StringTokenizer(s, CultureInfo.InvariantCulture, exceptionMessage: "Invalid Size")) |
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{ |
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return new PixelSize( |
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tokenizer.ReadInt32(), |
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tokenizer.ReadInt32()); |
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} |
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} |
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/// <summary>
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/// Checks for equality between a size and an object.
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/// </summary>
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/// <param name="obj">The object.</param>
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/// <returns>
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/// True if <paramref name="obj"/> is a size that equals the current size.
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/// </returns>
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public override bool Equals(object obj) |
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{ |
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if (obj is PixelSize other) |
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{ |
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return this == other; |
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} |
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return false; |
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} |
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/// <summary>
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/// Returns a hash code for a <see cref="PixelSize"/>.
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/// </summary>
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/// <returns>The hash code.</returns>
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public override int GetHashCode() |
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{ |
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unchecked |
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{ |
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int hash = 17; |
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hash = (hash * 23) + Width.GetHashCode(); |
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hash = (hash * 23) + Height.GetHashCode(); |
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return hash; |
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} |
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} |
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/// <summary>
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/// Returns a new <see cref="PixelSize"/> with the same height and the specified width.
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/// </summary>
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/// <param name="width">The width.</param>
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/// <returns>The new <see cref="PixelSize"/>.</returns>
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public PixelSize WithWidth(int width) => new PixelSize(width, Height); |
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/// <summary>
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/// Returns a new <see cref="PixelSize"/> with the same width and the specified height.
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/// </summary>
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/// <param name="height">The height.</param>
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/// <returns>The new <see cref="PixelSize"/>.</returns>
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public PixelSize WithHeight(int height) => new PixelSize(Width, height); |
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/// <summary>
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/// Converts the <see cref="PixelSize"/> to a device-independent <see cref="Size"/> using the
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/// specified dots per inch (DPI).
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/// </summary>
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/// <param name="dpi">The dots per inch.</param>
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/// <returns>The device-independent size.</returns>
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public Size ToSize(double dpi) => new Size(Width / (dpi / 96), Height / (dpi / 96)); |
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/// <summary>
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/// Converts the <see cref="PixelSize"/> to a device-independent <see cref="Size"/> using the
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/// specified dots per inch (DPI).
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/// </summary>
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/// <param name="dpi">The dots per inch.</param>
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/// <returns>The device-independent size.</returns>
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public Size ToSize(Vector dpi) => new Size(Width / (dpi.X / 96), Height / (dpi.Y / 96)); |
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/// <summary>
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/// Converts a <see cref="Size"/> to device pixels using the specified dots per inch (DPI).
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/// </summary>
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/// <param name="size">The size.</param>
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/// <param name="dpi">The dots per inch.</param>
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/// <returns>The device-independent size.</returns>
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public static PixelSize FromSize(Size size, double dpi) => new PixelSize( |
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(int)(size.Width * (dpi / 96)), |
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(int)(size.Height * (dpi / 96))); |
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/// <summary>
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/// Converts a <see cref="Size"/> to device pixels using the specified dots per inch (DPI).
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/// </summary>
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/// <param name="size">The size.</param>
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/// <param name="dpi">The dots per inch.</param>
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/// <returns>The device-independent size.</returns>
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public static PixelSize FromSize(Size size, Vector dpi) => new PixelSize( |
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(int)(size.Width * (dpi.X / 96)), |
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(int)(size.Height * (dpi.Y / 96))); |
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/// <summary>
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/// Returns the string representation of the size.
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/// </summary>
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/// <returns>The string representation of the size.</returns>
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public override string ToString() |
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{ |
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return string.Format(CultureInfo.InvariantCulture, "{0}, {1}", Width, Height); |
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} |
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} |
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} |
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@ -1 +1 @@ |
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Subproject commit 8e4700d4b24935ed5400e5e0d6fce96b5b4a317a |
Subproject commit 8abbe09592668efb573ac4d5548ba2d7e464ba78 |
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