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[TUI] Implement hex view window for displaying image sectors

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This commit is contained in:
Natalia Portillo
2025-10-16 14:32:27 +01:00
parent 1bbbdc53e8
commit 0161ebc4ca
6 changed files with 239 additions and 1 deletions
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3
Aaru.Tui/Aaru.Tui.csproj
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@@ -16,6 +16,9 @@
<DependentUpon>MainWindow.axaml</DependentUpon>
<SubType>Code</SubType>
</Compile>
<Compile Update="Views\Windows\HexViewWindow.axaml.cs">
<DependentUpon>HexViewWindow.axaml</DependentUpon>
</Compile>
</ItemGroup>
<ItemGroup>

115
Aaru.Tui/ViewModels/Windows/HexViewWindowViewModel.cs Normal file
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@@ -0,0 +1,115 @@
using System.Collections.ObjectModel;
using System.Windows.Input;
using Aaru.CommonTypes.Interfaces;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.ApplicationLifetimes;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
namespace Aaru.Tui.ViewModels.Windows;
public sealed partial class HexViewWindowViewModel : ViewModelBase
{
private const int BYTES_PER_LINE = 16;
readonly IMediaImage _imageFormat;
readonly Window _parent;
readonly Window _view;
readonly ulong _currentSector;
[ObservableProperty]
string _filePath;
[ObservableProperty]
long _fileSize;
[ObservableProperty]
ObservableCollection<HexViewLine> _lines = [];
internal HexViewWindowViewModel(Window parent, Window view, IMediaImage imageFormat, string filePath)
{
ExitCommand = new RelayCommand(Exit);
BackCommand = new RelayCommand(Back);
_parent = parent;
_view = view;
_imageFormat = imageFormat;
_currentSector = 0;
FilePath = filePath;
}
public ICommand BackCommand { get; }
public ICommand ExitCommand { get; }
void Back()
{
_parent.Show();
_view.Close();
}
void Exit()
{
var lifetime = Application.Current!.ApplicationLifetime as IControlledApplicationLifetime;
lifetime!.Shutdown();
}
void LoadSector()
{
_imageFormat.ReadSector(_currentSector, out byte[]? sector);
using var stream = new MemoryStream(sector);
var buffer = new byte[BYTES_PER_LINE];
long offset = 0;
const int maxLines = 1000;
for(var lineCount = 0; stream.Position < stream.Length && lineCount < maxLines; lineCount++)
{
int bytesRead = stream.Read(buffer, 0, BYTES_PER_LINE);
if(bytesRead == 0) break;
var line = new HexViewLine
{
Offset = offset,
Bytes = buffer.Take(bytesRead).ToArray()
};
Lines.Add(line);
offset += bytesRead;
}
}
public void LoadComplete()
{
LoadSector();
}
}
sealed class HexViewLine
{
internal long Offset { get; init; }
internal byte[] Bytes { get; init; }
public string OffsetString => $"{Offset:X8}";
public string HexString
{
get
{
var hex = string.Join(" ", Bytes.Select(b => $"{b:X2}"));
// Pad to 16 bytes worth of hex (16 * 3 - 1 = 47 chars)
return hex.PadRight(47);
}
}
public string AsciiString
{
get
{
var ascii = new char[Bytes.Length];
for(var i = 0; i < Bytes.Length; i++) ascii[i] = Bytes[i] >= 32 && Bytes[i] < 127 ? (char)Bytes[i] : '.';
return new string(ascii).PadRight(16);
}
}
}

16
Aaru.Tui/ViewModels/Windows/MainWindowViewModel.cs
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@@ -42,6 +42,7 @@ public sealed partial class MainWindowViewModel : ViewModelBase
{
_view = view;
ExitCommand = new RelayCommand(Exit);
SectorViewCommand = new RelayCommand(SectorView);
OpenSelectedFileCommand = new RelayCommand(OpenSelectedFile, CanOpenSelectedFile);
InformationalVersion =
@@ -74,6 +75,7 @@ public sealed partial class MainWindowViewModel : ViewModelBase
public ICommand OpenSelectedFileCommand { get; }
public ICommand ExitCommand { get; }
public ICommand SectorViewCommand { get; }
public bool IsFileInfoAvailable => SelectedFile?.FileInfo != null;
public bool SelectedFileIsNotDirectory => SelectedFile?.IsDirectory == false;
public long? SelectedFileLength => SelectedFile?.IsDirectory == false ? SelectedFile?.FileInfo?.Length : 0;
@@ -85,6 +87,18 @@ public sealed partial class MainWindowViewModel : ViewModelBase
public string? SelectedFileInformation => SelectedFile?.Information;
void SectorView()
{
if(SelectedFile?.ImageFormat is null) return;
var view = new HexViewWindow();
var vm = new HexViewWindowViewModel(_view, view, SelectedFile.ImageFormat, SelectedFile.Path);
view.DataContext = vm;
view.Show();
_view.Hide();
}
void Exit()
{
var lifetime = Application.Current!.ApplicationLifetime as IControlledApplicationLifetime;
@@ -299,6 +313,8 @@ public sealed partial class MainWindowViewModel : ViewModelBase
CurrentPath = SelectedFile.Path;
Environment.CurrentDirectory = CurrentPath;
LoadFiles();
return;
}
if(SelectedFile.ImageFormat is null) return;

79
Aaru.Tui/Views/Windows/HexViewWindow.axaml Normal file
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@@ -0,0 +1,79 @@
<Window xmlns="https://github.com/avaloniaui"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:console="https://github.com/jinek/consolonia"
xmlns:windows="clr-namespace:Aaru.Tui.ViewModels.Windows"
x:Class="Aaru.Tui.Views.Windows.HexViewWindow"
RequestedThemeVariant="Dark">
<Design.DataContext>
<windows:HexViewWindowViewModel />
</Design.DataContext>
<DockPanel>
<Menu DockPanel.Dock="Bottom">
<MenuItem Header="ESC Back"
HotKey="Escape"
Command="{Binding BackCommand, Mode=OneWay}" />
<MenuItem Header="F10 Exit"
HotKey="F10"
Command="{Binding ExitCommand, Mode=OneWay}" />
</Menu>
<Border BorderThickness="1">
<Border.BorderBrush>
<console:LineBrush LineStyle="DoubleLine"
Brush="Blue" />
</Border.BorderBrush>
<Grid RowDefinitions="Auto,Auto,*">
<TextBlock Grid.Row="0"
Foreground="Green"
Text="{Binding FilePath, Mode=OneWay}" />
<!-- Header -->
<Grid Grid.Row="1"
ColumnDefinitions="Auto,*,Auto">
<TextBlock Grid.Column="0"
Text="Offset"
HorizontalAlignment="Left"
Foreground="Cyan"
FontWeight="Bold" />
<TextBlock Grid.Column="1"
HorizontalAlignment="Center"
Text="00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F"
Foreground="Cyan"
FontWeight="Bold" />
<TextBlock Grid.Column="2"
Text="ASCII "
HorizontalAlignment="Left"
Foreground="Cyan"
FontWeight="Bold" />
</Grid>
<!-- Hex View Content -->
<ScrollViewer Grid.Row="2"
Background="Transparent"
x:Name="HexScrollViewer">
<ItemsControl ItemsSource="{Binding Lines, Mode=OneWay}">
<ItemsControl.ItemTemplate>
<DataTemplate DataType="windows:HexViewLine">
<Grid ColumnDefinitions="Auto,*,Auto">
<!-- Offset Column -->
<TextBlock Grid.Column="0"
Text="{Binding OffsetString, Mode=OneWay}"
Foreground="Yellow" />
<!-- Hex Column -->
<TextBlock Grid.Column="1"
HorizontalAlignment="Center"
Text="{Binding HexString, Mode=OneWay}"
Foreground="White" />
<!-- ASCII Column -->
<TextBlock Grid.Column="2"
Text="{Binding AsciiString, Mode=OneWay}"
Foreground="LightGreen" />
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</Grid>
</Border>
</DockPanel>
</Window>

22
Aaru.Tui/Views/Windows/HexViewWindow.axaml.cs Normal file
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@@ -0,0 +1,22 @@
using Aaru.Tui.ViewModels.Windows;
using Avalonia.Controls;
using Avalonia.Interactivity;
namespace Aaru.Tui.Views.Windows;
public partial class HexViewWindow : Window
{
public HexViewWindow()
{
InitializeComponent();
}
/// <inheritdoc />
protected override void OnLoaded(RoutedEventArgs e)
{
base.OnLoaded(e);
(DataContext as HexViewWindowViewModel)?.LoadComplete();
}
}

5
Aaru.Tui/Views/Windows/MainWindow.axaml
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@@ -11,7 +11,10 @@
</Design.DataContext>
<DockPanel>
<Menu DockPanel.Dock="Bottom">
<MenuItem Header="ESC " />
<MenuItem Header="ESC " /> <MenuItem Header="F1 Help" />
<MenuItem Header="F2 ScVw"
Command="{Binding SectorViewCommand, Mode=OneWay}"
HotKey="F2" />
<MenuItem Header="F10 Exit"
Command="{Binding ExitCommand, Mode=OneWay}"
HotKey="F10" />