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using System;
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using System.Drawing;
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using System.Windows;
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using System.Windows.Forms;
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using System.Windows.Interop;
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namespace DownKyi.Utils
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{
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/// <summary>
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/// 为窗口<see cref="Window"/>添加附加属性的辅助类
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///
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/// https://www.cnblogs.com/kybs0/p/9834023.html
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/// </summary>
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public class WindowAdaptation
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{
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#region 窗口宽度比例
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/// <summary>
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/// 窗口宽度比例 单位:小数(0 - 1.0]
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/// <para>窗口实际宽度=使用屏幕可显示区域（屏幕高度-任务栏高度）* 窗口宽度比例</para>
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/// </summary>
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public static readonly DependencyProperty WidthByScreenRatioProperty = DependencyProperty.RegisterAttached(
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"WidthByScreenRatio", typeof(double), typeof(WindowAdaptation), new PropertyMetadata(1.0, OnWidthByScreenRatioPropertyChanged));
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private static void OnWidthByScreenRatioPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is Window window && e.NewValue is double widthByScreenRatio)
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{
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if (widthByScreenRatio <= 0 || widthByScreenRatio > 1)
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{
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throw new ArgumentException($"屏幕比例不支持{widthByScreenRatio}");
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}
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var screenDisplayArea = GetScreenSize(window);
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var screenRatioWidth = screenDisplayArea.Width * widthByScreenRatio;
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//if (!double.IsNaN(window.Width) && screenDisplayArea.Width > window.Width)
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//{
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// window.Width = window.Width;
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//}
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//else
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//{
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// window.Width = screenRatioWidth;
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//}
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if (!double.IsNaN(window.Width) && screenRatioWidth > window.Width)
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{
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window.Width = window.Width;
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}
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else if (!double.IsNaN(window.MinWidth) && screenRatioWidth < window.MinWidth)
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{
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window.Width = screenDisplayArea.Width;
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}
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else
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{
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window.Width = screenRatioWidth;
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}
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}
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}
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public static void SetWidthByScreenRatio(DependencyObject element, double value)
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{
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element.SetValue(WidthByScreenRatioProperty, value);
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}
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public static double GetWidthByScreenRatio(DependencyObject element)
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{
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return (double)element.GetValue(WidthByScreenRatioProperty);
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}
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#endregion
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#region 窗口高度比例
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/// <summary>
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/// 窗口宽度比例 单位:小数(0 - 1.0]
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/// <para>窗口实际宽度=使用屏幕可显示区域（屏幕高度-任务栏高度）* 窗口宽度比例</para>
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/// </summary>
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public static readonly DependencyProperty HeightByScreenRatioProperty = DependencyProperty.RegisterAttached(
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"HeightByScreenRatio", typeof(double), typeof(WindowAdaptation), new PropertyMetadata(1.0, OnHeightByScreenRatioPropertyChanged));
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private static void OnHeightByScreenRatioPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is Window window && e.NewValue is double heightByScreenRatio)
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{
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if (heightByScreenRatio <= 0 || heightByScreenRatio > 1)
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{
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throw new ArgumentException($"屏幕比例不支持{heightByScreenRatio}");
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}
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var screenDisplayArea = GetScreenSize(window);
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var screenRatioHeight = screenDisplayArea.Height * heightByScreenRatio;
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if (!double.IsNaN(window.Height) && screenDisplayArea.Height > window.Height)
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{
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window.Height = window.Height;
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}
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else
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{
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window.Height = screenRatioHeight;
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}
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//if (!double.IsNaN(window.Height) && screenRatioHeight > window.Height)
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//{
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// window.Height = window.Height;
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//}
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//else if (!double.IsNaN(window.MinHeight) && screenRatioHeight < window.MinHeight)
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//{
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// window.Height = screenDisplayArea.Height;
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//}
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//else
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//{
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// window.Height = screenRatioHeight;
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//}
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}
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}
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public static void SetHeightByScreenRatio(DependencyObject element, double value)
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{
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element.SetValue(HeightByScreenRatioProperty, value);
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}
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public static double GetHeightByScreenRatio(DependencyObject element)
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{
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return (double)element.GetValue(HeightByScreenRatioProperty);
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}
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#endregion
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const int DpiPercent = 96;
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private static dynamic GetScreenSize(Window window)
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{
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var intPtr = new WindowInteropHelper(window).Handle;//获取当前窗口的句柄
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var screen = Screen.FromHandle(intPtr);//获取当前屏幕
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using (Graphics currentGraphics = Graphics.FromHwnd(intPtr))
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{
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//分别获取当前屏幕X/Y方向的DPI
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double dpiXRatio = currentGraphics.DpiX / DpiPercent;
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double dpiYRatio = currentGraphics.DpiY / DpiPercent;
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var width = screen.WorkingArea.Width / dpiXRatio;
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var height = screen.WorkingArea.Height / dpiYRatio;
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return new { Width = width, Height = height };
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}
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}
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}
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}
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leiurayer
3 years ago