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https://github.com/QL-Win/QuickLook.git
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Merged QuickLook.Common from submodule
https://github.com/QL-Win/QuickLook.Common/commit/529d07b56577b88329481cdac8f2a6a175b6c21a
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ema
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// Copyright © 2017-2026 QL-Win Contributors
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//
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// This file is part of QuickLook program.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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using QuickLook.Common.Annotations;
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using QuickLook.Common.Helpers;
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using System;
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using System.ComponentModel;
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using System.Runtime.CompilerServices;
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using System.Windows;
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namespace QuickLook.Common.Plugin;
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/// <summary>
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/// A runtime object which allows interaction between this plugin and QuickLook.
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/// </summary>
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public class ContextObject : INotifyPropertyChanged
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{
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private bool _canResize = true;
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private bool _fullWindowDragging;
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private bool _isBusy;
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private string _title = string.Empty;
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private bool _titlebarAutoHide;
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private bool _titlebarBlurVisibility;
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private bool _titlebarColourVisibility = true;
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private bool _titlebarOverlap;
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private Themes _theme = Themes.None;
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private object _viewerContent;
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private string _colorProfileName = null;
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private bool _isBlocked;
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/// <summary>
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/// Get the instance of Viewer window.
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/// </summary>
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public object Source { get; set; }
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/// <summary>
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/// Get or set the title of Viewer window.
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/// </summary>
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public string Title
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{
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get => _title;
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set
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{
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_title = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Get or set the viewer content control.
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/// </summary>
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public object ViewerContent
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{
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get => _viewerContent;
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set
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{
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_viewerContent = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Show or hide the busy indicator icon.
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/// </summary>
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public bool IsBusy
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{
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get => _isBusy;
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set
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{
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_isBusy = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Set the exact size you want.
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/// </summary>
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public Size PreferredSize { get; set; } = new Size { Width = 800, Height = 600 };
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/// <summary>
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/// Set whether user are allowed to resize the viewer window.
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/// </summary>
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public bool CanResize
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{
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get => _canResize;
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set
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{
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_canResize = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Set whether the full viewer window can be used for mouse dragging.
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/// </summary>
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public bool FullWindowDragging
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{
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get => _fullWindowDragging;
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set
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{
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_fullWindowDragging = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Set whether the viewer content is overlapped by the title bar
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/// </summary>
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public bool TitlebarOverlap
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{
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get => _titlebarOverlap;
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set
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{
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_titlebarOverlap = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Set whether the title bar shows a blurred background
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/// </summary>
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public bool TitlebarBlurVisibility
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{
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get => _titlebarBlurVisibility;
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set
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{
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if (value == _titlebarBlurVisibility) return;
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_titlebarBlurVisibility = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Set whether the title bar shows a colour overlay
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/// </summary>
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public bool TitlebarColourVisibility
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{
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get => _titlebarColourVisibility;
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set
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{
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if (value == _titlebarColourVisibility) return;
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_titlebarColourVisibility = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Should the titlebar hides itself after a short period of inactivity?
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/// </summary>
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public bool TitlebarAutoHide
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{
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get => _titlebarAutoHide;
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set
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{
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if (value == _titlebarAutoHide) return;
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_titlebarAutoHide = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Switch to dark theme?
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/// </summary>
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public Themes Theme
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{
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get => _theme;
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set
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{
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_theme = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// The color profile of the monitor that will host the preview window
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/// </summary>
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public string ColorProfileName
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{
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get => _colorProfileName;
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set
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{
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_colorProfileName = value;
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OnPropertyChanged();
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}
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}
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/// <summary>
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/// Get or set whether to block showing the preview window.
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/// </summary>
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public bool IsBlocked
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{
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get => _isBlocked;
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set
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{
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_isBlocked = value;
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OnPropertyChanged();
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}
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}
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public event PropertyChangedEventHandler PropertyChanged;
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/// <summary>
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/// Set the size of viewer window, scale or shrink to fit (to screen resolution).
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/// The window can take maximum (maxRatio*resolution) space.
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/// </summary>
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/// <param name="size">The desired size.</param>
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/// <param name="maxRatio">The maximum percent (over screen resolution) it can take.</param>
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public double SetPreferredSizeFit(Size size, double maxRatio)
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{
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if (maxRatio > 1)
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maxRatio = 1;
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var max = WindowHelper.GetCurrentDesktopSize();
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var widthRatio = max.Width * maxRatio / size.Width;
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var heightRatio = max.Height * maxRatio / size.Height;
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var ratio = Math.Min(widthRatio, heightRatio);
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if (ratio > 1) ratio = 1;
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PreferredSize = new Size { Width = size.Width * ratio, Height = size.Height * ratio };
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return ratio;
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}
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public void Reset()
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{
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Title = string.Empty;
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// set to False to prevent showing loading icon
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IsBusy = false;
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PreferredSize = new Size();
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CanResize = true;
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FullWindowDragging = false;
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Theme = Themes.None;
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TitlebarOverlap = false;
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TitlebarAutoHide = false;
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TitlebarBlurVisibility = false;
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TitlebarColourVisibility = true;
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ViewerContent = null;
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ColorProfileName = null;
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IsBlocked = false;
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}
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[NotifyPropertyChangedInvocator]
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protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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}
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