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150%缩放下的窗口不超出屏幕

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This commit is contained in:
croire 2022-03-19 16:32:43 +08:00
parent 287b3b528d
commit 8317865b41
3 changed files with 153 additions and 2 deletions
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1
DownKyi/DownKyi.csproj
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@ -100,6 +100,7 @@
<Compile Include="Services\Download\AddToDownloadService.cs" />
<Compile Include="Services\Download\DownloadStorageService.cs" />
<Compile Include="Services\SearchService.cs" />
<Compile Include="Utils\WindowAdaptation.cs" />
<Compile Include="ViewModels\PageViewModels\BangumiFollowMedia.cs" />
<Compile Include="ViewModels\PageViewModels\Favorites.cs" />
<Compile Include="ViewModels\PageViewModels\FavoritesMedia.cs" />

146
DownKyi/Utils/WindowAdaptation.cs Normal file
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@ -0,0 +1,146 @@
using System;
using System.Drawing;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Interop;
namespace DownKyi.Utils
{
/// <summary>
/// 为窗口<see cref="Window"/>添加附加属性的辅助类
///
/// https://www.cnblogs.com/kybs0/p/9834023.html
/// </summary>
public class WindowAdaptation
{
#region 窗口宽度比例
/// <summary>
/// 窗口宽度比例 单位:小数(0 - 1.0]
/// <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>
/// </summary>
public static readonly DependencyProperty WidthByScreenRatioProperty = DependencyProperty.RegisterAttached(
"WidthByScreenRatio", typeof(double), typeof(WindowAdaptation), new PropertyMetadata(1.0, OnWidthByScreenRatioPropertyChanged));
private static void OnWidthByScreenRatioPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d is Window window && e.NewValue is double widthByScreenRatio)
{
if (widthByScreenRatio <= 0 || widthByScreenRatio > 1)
{
throw new ArgumentException($"屏幕比例不支持{widthByScreenRatio}");
}
var screenDisplayArea = GetScreenSize(window);
var screenRatioWidth = screenDisplayArea.Width * widthByScreenRatio;
//if (!double.IsNaN(window.Width) && screenDisplayArea.Width > window.Width)
//{
// window.Width = window.Width;
//}
//else
//{
// window.Width = screenRatioWidth;
//}
if (!double.IsNaN(window.Width) && screenRatioWidth > window.Width)
{
window.Width = window.Width;
}
else if (!double.IsNaN(window.MinWidth) && screenRatioWidth < window.MinWidth)
{
window.Width = screenDisplayArea.Width;
}
else
{
window.Width = screenRatioWidth;
}
}
}
public static void SetWidthByScreenRatio(DependencyObject element, double value)
{
element.SetValue(WidthByScreenRatioProperty, value);
}
public static double GetWidthByScreenRatio(DependencyObject element)
{
return (double)element.GetValue(WidthByScreenRatioProperty);
}
#endregion
#region 窗口高度比例
/// <summary>
/// 窗口宽度比例 单位:小数(0 - 1.0]
/// <para>窗口实际宽度=使用屏幕可显示区域（屏幕高度-任务栏高度）* 窗口宽度比例</para>
/// </summary>
public static readonly DependencyProperty HeightByScreenRatioProperty = DependencyProperty.RegisterAttached(
"HeightByScreenRatio", typeof(double), typeof(WindowAdaptation), new PropertyMetadata(1.0, OnHeightByScreenRatioPropertyChanged));
private static void OnHeightByScreenRatioPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (d is Window window && e.NewValue is double heightByScreenRatio)
{
if (heightByScreenRatio <= 0 || heightByScreenRatio > 1)
{
throw new ArgumentException($"屏幕比例不支持{heightByScreenRatio}");
}
var screenDisplayArea = GetScreenSize(window);
var screenRatioHeight = screenDisplayArea.Height * heightByScreenRatio;
if (!double.IsNaN(window.Height) && screenDisplayArea.Height > window.Height)
{
window.Height = window.Height;
}
else
{
window.Height = screenRatioHeight;
}
//if (!double.IsNaN(window.Height) && screenRatioHeight > window.Height)
//{
// window.Height = window.Height;
//}
//else if (!double.IsNaN(window.MinHeight) && screenRatioHeight < window.MinHeight)
//{
// window.Height = screenDisplayArea.Height;
//}
//else
//{
// window.Height = screenRatioHeight;
//}
}
}
public static void SetHeightByScreenRatio(DependencyObject element, double value)
{
element.SetValue(HeightByScreenRatioProperty, value);
}
public static double GetHeightByScreenRatio(DependencyObject element)
{
return (double)element.GetValue(HeightByScreenRatioProperty);
}
#endregion
const int DpiPercent = 96;
private static dynamic GetScreenSize(Window window)
{
var intPtr = new WindowInteropHelper(window).Handle;//获取当前窗口的句柄
var screen = Screen.FromHandle(intPtr);//获取当前屏幕
using (Graphics currentGraphics = Graphics.FromHwnd(intPtr))
{
//分别获取当前屏幕X/Y方向的DPI
double dpiXRatio = currentGraphics.DpiX / DpiPercent;
double dpiYRatio = currentGraphics.DpiY / DpiPercent;
var width = screen.WorkingArea.Width / dpiXRatio;
var height = screen.WorkingArea.Height / dpiYRatio;
return new { Width = width, Height = height };
}
}
}
}

8
DownKyi/Views/MainWindow.xaml
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@ -3,12 +3,15 @@
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:i="http://schemas.microsoft.com/xaml/behaviors"
xmlns:local="clr-namespace:DownKyi.Utils"
xmlns:prism="http://prismlibrary.com/"
Title="{DynamicResource AppName}"
Width="1100"
Height="750"
MinWidth="900"
MinHeight="600"
MinWidth="800"
MinHeight="550"
local:WindowAdaptation.HeightByScreenRatio="0.75"
local:WindowAdaptation.WidthByScreenRatio="0.8"
prism:ViewModelLocator.AutoWireViewModel="True"
ResizeMode="CanResize"
WindowStartupLocation="CenterScreen"
@ -200,4 +203,5 @@
</Border>
</Grid>
</Border>
</Window>