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Feature: Added support for previewing Office files (#13096)
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13 files changed

+2212
-6
lines changed

13 files changed

+2212
-6
lines changed

‎src/Files.App/Files.App.csproj

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<!-- Copyright (c) 2023 Files Community. Licensed under the MIT License. See the LICENSE. -->
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<!-- Copyright (c) 2023 Files Community. Licensed under the MIT License. See the LICENSE. -->
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<ItemGroup>
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<PackageReference Include="ByteSize" Version="2.1.1" />
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<PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
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<PackageReference Include="DirectNCore" Version="1.13.2.1" />
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<PackageReference Include="DiscUtils.Udf" Version="0.16.13" />
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<PackageReference Include="FluentFTP" Version="43.0.1" />
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<PackageReference Include="ini-parser-netstandard" Version="2.5.2" />
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<PackageReference Include="CommunityToolkit.WinUI.UI.Behaviors" Version="7.1.2" />
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<PackageReference Include="CommunityToolkit.WinUI.UI.Controls" Version="7.1.2" />
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<PackageReference Include="Tulpep.ActiveDirectoryObjectPicker" Version="3.0.11" />
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<PackageReference Include="Vanara.PInvoke.DwmApi" Version="3.4.15" />
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<PackageReference Include="Vanara.Windows.Extensions" Version="3.4.16" />
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<PackageReference Include="WinUIEx" Version="2.1.0" />
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<PackageReference Include="Vanara.PInvoke.Mpr" Version="3.4.16" />

‎src/Files.App/Helpers/Interop/InteropHelpers.cs

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using Microsoft.UI.Xaml;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using Vanara.PInvoke;
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using static Vanara.PInvoke.User32;
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namespace Files.App.Helpers
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{
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new object[] { cursor }
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);
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}
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[DllImport(Lib.User32, SetLastError = true, EntryPoint = "SetWindowLong")]
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private static extern int SetWindowLongPtr32(HWND hWnd, WindowLongFlags nIndex, IntPtr dwNewLong);
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[DllImport(Lib.User32, SetLastError = true, EntryPoint = "SetWindowLongPtr")]
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private static extern IntPtr SetWindowLongPtr64(HWND hWnd, WindowLongFlags nIndex, IntPtr dwNewLong);
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public static IntPtr SetWindowLong(HWND hWnd, WindowLongFlags nIndex, IntPtr dwNewLong)
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{
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if (IntPtr.Size == 4)
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return SetWindowLongPtr32(hWnd, nIndex, dwNewLong);
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else
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return SetWindowLongPtr64(hWnd, nIndex, dwNewLong);
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}
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}
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[ComImport]

‎src/Files.App/UserControls/FilePreviews/ShellPreview.xaml

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<?xml version="1.0" encoding="utf-8" ?>
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<UserControl
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x:Class="Files.App.UserControls.FilePreviews.ShellPreview"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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xmlns:local="using:Files.App.UserControls.FilePreviews"
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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Unloaded="PreviewHost_Unloaded"
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mc:Ignorable="d">
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<ContentPresenter
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Name="contentPresenter"
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Background="Transparent"
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Loaded="PreviewHost_Loaded"
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PointerEntered="PreviewHost_PointerEntered"
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SizeChanged="PreviewHost_SizeChanged" />
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</UserControl>

‎src/Files.App/UserControls/FilePreviews/ShellPreview.xaml.cs

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using Files.App.ViewModels.Previews;
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using Microsoft.UI.Xaml;
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using Microsoft.UI.Xaml.Controls;
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using Vanara.PInvoke;
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using Windows.Foundation;
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namespace Files.App.UserControls.FilePreviews
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{
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public sealed partial class ShellPreview : UserControl
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{
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private ShellPreviewViewModel ViewModel { get; set; }
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public ShellPreview(ShellPreviewViewModel model)
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{
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ViewModel = model;
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this.InitializeComponent();
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}
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private void PreviewHost_Loaded(object sender, RoutedEventArgs e)
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{
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ViewModel.LoadPreview(contentPresenter);
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ViewModel.SizeChanged(GetPreviewSize());
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if (XamlRoot.Content is FrameworkElement element)
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{
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element.SizeChanged += PreviewHost_SizeChanged;
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element.PointerEntered += PreviewHost_PointerEntered;
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}
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}
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private void PreviewHost_SizeChanged(object sender, SizeChangedEventArgs e)
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{
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ViewModel.SizeChanged(GetPreviewSize());
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}
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private RECT GetPreviewSize()
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{
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var source = contentPresenter.TransformToVisual(XamlRoot.Content);
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var physicalSize = contentPresenter.RenderSize;
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var physicalPos = source.TransformPoint(new Point(0, 0));
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var scale = XamlRoot.RasterizationScale;
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var result = new RECT();
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result.Left = (int)(physicalPos.X * scale + 0.5);
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result.Top = (int)(physicalPos.Y * scale + 0.5);
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result.Width = (int)(physicalSize.Width * scale + 0.5);
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result.Height = (int)(physicalSize.Height * scale + 0.5);
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return result;
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}
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private void PreviewHost_Unloaded(object sender, RoutedEventArgs e)
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{
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if (XamlRoot.Content is FrameworkElement element)
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{
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element.SizeChanged -= PreviewHost_SizeChanged;
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element.PointerEntered -= PreviewHost_PointerEntered;
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}
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ViewModel.UnloadPreview();
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}
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private void PreviewHost_PointerEntered(object sender, Microsoft.UI.Xaml.Input.PointerRoutedEventArgs e)
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{
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ViewModel.PointerEntered(sender == contentPresenter);
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}
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}
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}

‎src/Files.App/Utils/Shell/ItemStreamHelper.cs

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using System;
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using System.Runtime.InteropServices;
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using Vanara.PInvoke;
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namespace Files.App.Utils.Shell
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{
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public static class ItemStreamHelper
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{
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[DllImport("shlwapi.dll", CallingConvention = CallingConvention.StdCall, PreserveSig = true, CharSet = CharSet.Unicode)]
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static extern HRESULT SHCreateStreamOnFileEx(string pszFile, STGM grfMode, uint dwAttributes, uint fCreate, IntPtr pstmTemplate, out IntPtr ppstm);
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[DllImport("shell32.dll", CallingConvention = CallingConvention.StdCall, PreserveSig = true, CharSet = CharSet.Unicode)]
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static extern HRESULT SHCreateItemFromParsingName(string pszPath, IntPtr pbc, ref Guid riid, out IntPtr ppv);
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static readonly Guid IShellItemIid = Guid.ParseExact("43826d1e-e718-42ee-bc55-a1e261c37bfe", "d");
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public static IntPtr IShellItemFromPath(string path)
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{
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IntPtr psi;
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Guid iid = IShellItemIid;
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var hr = SHCreateItemFromParsingName(path, IntPtr.Zero, ref iid, out psi);
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if ((int)hr < 0)
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return IntPtr.Zero;
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return psi;
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}
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public static IntPtr IStreamFromPath(string path)
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{
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IntPtr pstm;
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var hr = SHCreateStreamOnFileEx(path,
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STGM.STGM_READ | STGM.STGM_FAILIFTHERE | STGM.STGM_SHARE_DENY_NONE,
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0, 0, IntPtr.Zero, out pstm);
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if ((int)hr < 0)
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return IntPtr.Zero;
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return pstm;
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}
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public static void ReleaseObject(IntPtr obj)
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{
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Marshal.Release(obj);
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}
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}
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}

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