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Data segments
1 parent 9919621 commit a82a0b6

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Lines changed: 124 additions & 1 deletion

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‎QrCodeAnalyzer/MainWindow.xaml‎

Lines changed: 33 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -5,7 +5,7 @@
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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xmlns:local="clr-namespace:Net.Codecrete.QrCodeGenerator.Analyzer"
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mc:Ignorable="d"
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Title="QR Code" Height="400" Width="600"
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Title="QR Code" Height="560" Width="600"
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Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}">
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<Grid Margin="20,16,20,16">
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<Grid.ColumnDefinitions>
@@ -15,6 +15,7 @@
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<Grid.RowDefinitions>
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<RowDefinition Height="1*"/>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="140"/>
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</Grid.RowDefinitions>
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<Image Source="{Binding Path=QrCodeImage}" Grid.Row="0" Grid.Column="0" Margin="0,0,0,16"
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RenderOptions.BitmapScalingMode="NearestNeighbor" RenderOptions.EdgeMode="Aliased"/>
@@ -76,5 +77,36 @@
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<Button x:Name="CopyButton" Content="Copy QR Code" Grid.Row="3" Margin="0,6,0,0"
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VerticalAlignment="Center" HorizontalAlignment="Right" Padding="10,3" Click="CopyButton_Click"/>
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</StackPanel>
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<Grid Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="2" Margin="0,12,0,0">
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="1*"/>
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</Grid.RowDefinitions>
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<Grid Grid.Row="0">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="120"/>
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<ColumnDefinition Width="1*"/>
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</Grid.ColumnDefinitions>
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<TextBlock Grid.Column="0" Text="Mode" FontWeight="Bold" Padding="4,2"/>
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<TextBlock Grid.Column="1" Text="Content" FontWeight="Bold" Padding="4,2"/>
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<Border Grid.Column="0" Grid.ColumnSpan="2" BorderBrush="Gray" BorderThickness="0,0,0,1" VerticalAlignment="Bottom"/>
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</Grid>
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<ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Disabled">
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<ItemsControl ItemsSource="{Binding Path=DataSegments}">
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<ItemsControl.ItemTemplate>
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<DataTemplate>
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="120"/>
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<ColumnDefinition Width="1*"/>
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</Grid.ColumnDefinitions>
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<TextBlock Grid.Column="0" Text="{Binding Path=Mode}" FontFamily="Consolas, Cascadia Mono" Padding="4,2"/>
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<TextBlock Grid.Column="1" Text="{Binding Path=Content}" FontFamily="Consolas, Cascadia Mono" Padding="4,2" TextWrapping="Wrap"/>
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</Grid>
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</DataTemplate>
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</ItemsControl.ItemTemplate>
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</ItemsControl>
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</ScrollViewer>
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</Grid>
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</Grid>
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</Window>

‎QrCodeAnalyzer/MainWindowViewModel.cs‎

Lines changed: 72 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -8,15 +8,20 @@
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//
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1010
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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namespace Net.Codecrete.QrCodeGenerator.Analyzer;
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public enum HighlightKind { None, Blocks, HorizontalStreaks, VerticalStreaks }
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23+
public sealed record SegmentRow(string Mode, string Content);
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public sealed class MainWindowViewModel : INotifyPropertyChanged
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{
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private readonly QrCodeBuilder.DebugInfo _debugInfo = new QrCodeBuilder.DebugInfo();
@@ -31,6 +36,7 @@ public sealed class MainWindowViewModel : INotifyPropertyChanged
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private int _selectedDataMaskPattern = -1;
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private QrCode? _currentQrCode;
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private HighlightKind _highlight = HighlightKind.None;
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private IReadOnlyList<SegmentRow> _dataSegments = Array.Empty<SegmentRow>();
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public MainWindowViewModel()
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{
@@ -154,6 +160,16 @@ private set
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}
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}
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public IReadOnlyList<SegmentRow> DataSegments
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{
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get => _dataSegments;
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private set
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{
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_dataSegments = value;
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OnPropertyChanged();
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}
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}
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public HighlightKind Highlight
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{
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get => _highlight;
@@ -179,9 +195,65 @@ private void UpdateQrCode()
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_currentQrCode = qrCode;
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SelectedDataMaskPattern = qrCode.Mask;
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PenaltyDetails = _debugInfo.Penalties[qrCode.Mask];
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DataSegments = _debugInfo.DataSegments?.Select(BuildSegmentRow).ToArray()
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?? (IReadOnlyList<SegmentRow>)Array.Empty<SegmentRow>();
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RenderQrCodeImage();
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}
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private static SegmentRow BuildSegmentRow(DataSegment segment)
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{
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return segment.Mode switch
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{
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DataSegmentMode.Numeric => new SegmentRow("Numeric", DecodeAscii(segment.DataBytes)),
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DataSegmentMode.Alphanumeric => new SegmentRow("Alphanumeric", DecodeAscii(segment.DataBytes)),
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DataSegmentMode.Binary => new SegmentRow("Byte", FormatByteContent(segment.DataBytes)),
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DataSegmentMode.Kanji => new SegmentRow("Kanji", FormatHex(segment.DataBytes)),
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DataSegmentMode.ECI => new SegmentRow("ECI", "TODO"),
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DataSegmentMode.StructuredAppend => new SegmentRow("Structured Append", "TODO"),
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_ => new SegmentRow(segment.Mode.ToString(), FormatHex(segment.DataBytes)),
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};
215+
}
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217+
private static string DecodeAscii(ArraySegment<byte> data)
218+
{
219+
return data.Array == null ? string.Empty : Encoding.ASCII.GetString(data.Array, data.Offset, data.Count);
220+
}
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222+
private static readonly UTF8Encoding StrictUtf8 = new UTF8Encoding(false, throwOnInvalidBytes: true);
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224+
private static string FormatByteContent(ArraySegment<byte> data)
225+
{
226+
if (data.Array == null || data.Count == 0) return string.Empty;
227+
try
228+
{
229+
var text = StrictUtf8.GetString(data.Array, data.Offset, data.Count);
230+
foreach (var c in text)
231+
{
232+
if (c < 0x20 && c != '\t' && c != '\r' && c != '\n')
233+
{
234+
return FormatHex(data);
235+
}
236+
}
237+
return text;
238+
}
239+
catch (DecoderFallbackException)
240+
{
241+
return FormatHex(data);
242+
}
243+
}
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245+
private static string FormatHex(ArraySegment<byte> data)
246+
{
247+
if (data.Array == null || data.Count == 0) return string.Empty;
248+
var sb = new StringBuilder(data.Count * 3);
249+
for (int i = 0; i < data.Count; i++)
250+
{
251+
if (i > 0) sb.Append(' ');
252+
sb.Append(data.Array[data.Offset + i].ToString("X2"));
253+
}
254+
return sb.ToString();
255+
}
256+
185257
private void RenderQrCodeImage()
186258
{
187259
if (_currentQrCode == null) return;

‎QrCodeAnalyzer/data-segments.md‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
1+
The main windows should addititionally be able to display the data segments of the process. This is useful for debugging purposes, as it allows the user to see the contents of the data segments and how they are being used by the process.
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They should be displayed in a sort of table with two columns:
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1. Segment encoding mode
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2. Segment content
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The table should be towards the bottom of the main window.
9+
10+
The content should be displayed as follows:
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12+
- Encoding mode Numeric and Alphanumeric: as text (decoded)
13+
- Encoding mode Byte: If it can be converted to a string using UTF-8, it should be displayed as text (decoded). Otherwise, it should be displayed as a hex dump.
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- Encoding mode Kanji: as hex dump
15+
- Encoding mode ECI: display the ECI number
16+
- Other encoding modes: as hex dump
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18+
The list of data segments is accessible via the DebugAccess object.
19+

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