mirror of
https://github.com/Hofknecht/SystemTrayMenu.git
synced 2024-09-28 15:21:37 +12:00
44 lines
1.3 KiB
C#
44 lines
1.3 KiB
C#
// <copyright file="Scaling.cs" company="PlaceholderCompany">
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// Copyright (c) PlaceholderCompany. All rights reserved.
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// </copyright>
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namespace SystemTrayMenu.Utilities
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{
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using System;
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using System.Drawing;
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internal static class Scaling
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{
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private enum DeviceCap
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{
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VERTRES = 10,
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DESKTOPVERTRES = 117,
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}
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public static float Factor { get; private set; } = 1;
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internal static void Initialize()
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{
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CalculateScalingFactor();
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SetProcessDPIAwareWhenNecessary();
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static void SetProcessDPIAwareWhenNecessary()
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{
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if (Environment.OSVersion.Version.Major >= 6)
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{
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DllImports.NativeMethods.User32SetProcessDPIAware();
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}
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}
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}
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private static void CalculateScalingFactor()
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{
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Graphics g = Graphics.FromHwnd(IntPtr.Zero);
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IntPtr desktop = g.GetHdc();
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int logicalScreenHeight = DllImports.NativeMethods.Gdi32GetDeviceCaps(
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desktop, (int)DeviceCap.VERTRES);
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int physicalScreenHeight = DllImports.NativeMethods.Gdi32GetDeviceCaps(
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desktop, (int)DeviceCap.DESKTOPVERTRES);
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Factor = physicalScreenHeight / (float)logicalScreenHeight;
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}
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}
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}
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