119 lines
3.5 KiB
C#
119 lines
3.5 KiB
C#
using System;
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using System.Linq;
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using Avalonia;
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using Avalonia.Controls;
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using Avalonia.Controls.ApplicationLifetimes;
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using LibationFileManager;
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namespace LibationAvalonia
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{
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public static class FormSaveExtension
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{
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static readonly WindowIcon WindowIcon;
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static FormSaveExtension()
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{
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if (Application.Current.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
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WindowIcon = desktop.MainWindow.Icon;
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else
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WindowIcon = null;
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}
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public static void SetLibationIcon(this Window form)
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{
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form.Icon = WindowIcon;
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}
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public static void RestoreSizeAndLocation(this Window form, Configuration config)
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{
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if (Design.IsDesignMode) return;
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FormSizeAndPosition savedState = config.GetNonString<FormSizeAndPosition>(form.GetType().Name);
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if (savedState is null)
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return;
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// too small -- something must have gone wrong. use defaults
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if (savedState.Width < form.MinWidth || savedState.Height < form.MinHeight)
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{
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savedState.Width = (int)form.Width;
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savedState.Height = (int)form.Height;
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}
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// Fit to the current screen size in case the screen resolution changed since the size was last persisted
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if (savedState.Width > form.Screens.Primary.WorkingArea.Width)
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savedState.Width = form.Screens.Primary.WorkingArea.Width;
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if (savedState.Height > form.Screens.Primary.WorkingArea.Height)
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savedState.Height = form.Screens.Primary.WorkingArea.Height;
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var rect = new PixelRect(savedState.X, savedState.Y, savedState.Width, savedState.Height);
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form.Width = savedState.Width;
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form.Height = savedState.Height;
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// is proposed rect on a screen?
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if (form.Screens.All.Any(screen => screen.WorkingArea.Contains(rect)))
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{
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form.WindowStartupLocation = WindowStartupLocation.Manual;
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form.Position = new PixelPoint(savedState.X, savedState.Y);
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}
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else
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{
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form.WindowStartupLocation = WindowStartupLocation.CenterScreen;
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}
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// FINAL: for Maximized: start normal state, set size and location, THEN set max state
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form.WindowState = savedState.IsMaximized ? WindowState.Maximized : WindowState.Normal;
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}
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public static void SaveSizeAndLocation(this Window form, Configuration config)
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{
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if (Design.IsDesignMode) return;
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var saveState = new FormSizeAndPosition();
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saveState.IsMaximized = form.WindowState == WindowState.Maximized;
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// restore normal state to get real window size.
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if (form.WindowState != WindowState.Normal)
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{
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form.WindowState = WindowState.Normal;
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}
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saveState.X = form.Position.X;
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saveState.Y = form.Position.Y;
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saveState.Width = (int)form.Bounds.Size.Width;
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saveState.Height = (int)form.Bounds.Size.Height;
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config.SetObject(form.GetType().Name, saveState);
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}
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class FormSizeAndPosition
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{
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public int X;
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public int Y;
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public int Height;
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public int Width;
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public bool IsMaximized;
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}
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public static void HideMinMaxBtns(this Window form)
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{
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if (Design.IsDesignMode || App.PlatformID is not PlatformID.Win32NT)
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return;
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var handle = form.PlatformImpl.Handle.Handle;
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var currentStyle = GetWindowLong(handle, GWL_STYLE);
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SetWindowLong(handle, GWL_STYLE, currentStyle & ~WS_MAXIMIZEBOX & ~WS_MINIMIZEBOX);
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}
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const long WS_MINIMIZEBOX = 0x00020000L;
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const long WS_MAXIMIZEBOX = 0x10000L;
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const int GWL_STYLE = -16;
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[System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "GetWindowLong")]
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static extern long GetWindowLong(IntPtr hWnd, int nIndex);
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[System.Runtime.InteropServices.DllImport("user32.dll")]
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static extern int SetWindowLong(IntPtr hWnd, int nIndex, long dwNewLong);
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}
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}
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