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code reorg

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This commit is contained in:
Paul Schneider 2026-09-07 10:30:45 +01:00
commit 92aa68c03c
52 changed files with 5721 additions and 14 deletions
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120
src/PostIt/PostIt/Views/SignaturePage.axaml.cs
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@ -1,120 +0,0 @@
using System;
using System.Collections.Generic;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.Shapes;
using Avalonia.Media;
using PostIt.Controls;
using PostIt.ViewModels;
namespace PostIt.Views;
public partial class SignaturePage : ContentPage
{
private static readonly IBrush StrokeBrush = new SolidColorBrush(Color.FromRgb(0x10, 0x10, 0x10));
private const double StrokeThickness = 2.0;
private const double CoordinateMax = 10_000.0;
private SignaturePageViewModel? _vm;
private SignaturePadControl? _control;
public SignaturePage()
{
InitializeComponent();
// Wire the capture area: the Pad itself is the control, the
// surrounding Border (PadFrame) is the hit-test region. We
// set CaptureArea once the control's template has been
// applied — for an inline control with no template, that
// happens on first measure, which is guaranteed before
// the user can interact, so attaching here is safe.
_control = Pad;
_control.CaptureArea = PadFrame;
DataContextChanged += (_, _) => RebindViewModel(DataContext as SignaturePageViewModel);
}
private void RebindViewModel(SignaturePageViewModel? vm)
{
if (_vm is not null)
{
_vm.Detach();
_control!.RedrawRequested -= OnRedrawRequested;
}
_vm = vm;
if (_vm is null || _control is null) return;
_vm.Attach(_control);
_control.RedrawRequested += OnRedrawRequested;
Repaint();
}
private void OnRedrawRequested(object? sender, EventArgs e) => Repaint();
private void Repaint()
{
if (_control is null || InkLayer is null) return;
InkLayer.Children.Clear();
var w = PadFrame.Bounds.Width;
var h = PadFrame.Bounds.Height;
if (w <= 0 || h <= 0) return;
var pending = _control.PendingStroke;
var strokes = _control.Strokes;
int sealedCount = strokes.Count - pending.Count;
if (sealedCount < 0)
{
sealedCount = 0;
}
int i = 0;
while (i < sealedCount)
{
int k = strokes[i];
if (k <= 0) break;
i++; // skip the length prefix
var poly = new Polyline
{
Stroke = StrokeBrush,
StrokeThickness = StrokeThickness,
StrokeLineCap = PenLineCap.Round,
StrokeJoin = PenLineJoin.Round,
};
var pts = new List<Point>(k);
for (int p = 0; p < k; p++)
{
int nx = strokes[i++];
int ny = strokes[i++];
pts.Add(new Point(nx / CoordinateMax * w, ny / CoordinateMax * h));
}
poly.Points = pts;
InkLayer.Children.Add(poly);
}
if (pending.Count > 0)
{
var poly = new Polyline
{
Stroke = StrokeBrush,
StrokeThickness = StrokeThickness,
StrokeLineCap = PenLineCap.Round,
StrokeJoin = PenLineJoin.Round,
};
var pts = new List<Point>(pending.Count / 2);
for (int p = 0; p < pending.Count; p += 2)
{
int nx = pending[p];
int ny = pending[p + 1];
pts.Add(new Point(nx / CoordinateMax * w, ny / CoordinateMax * h));
}
poly.Points = pts;
InkLayer.Children.Add(poly);
}
}
}