public LineTextPreview()
{
SetStyle(ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw | ControlStyles.Opaque, true);
InitializeComponent();
_IndentSize = 4;
_Theme = null;
Analysis = null;
}
public override void Refresh()
{
base.Refresh();
if (Theme != null && Theme.Behavior != null && IsHandleCreated)
{
var snapshot = new FakeSnapshot(Text);
Analysis = new DocumentAnalyzer(snapshot, Theme.Behavior, IndentSize, IndentSize);
Analysis.Reset().ContinueWith(t => { BeginInvoke((Action)Invalidate); });
}
}
public override void Refresh()
{
base.Refresh();
if (Theme != null && Theme.Behavior != null && IsHandleCreated)
{
var snapshot = new FakeSnapshot(Text);
Analysis = new DocumentAnalyzer(snapshot, Theme.Behavior, IndentSize, IndentSize);
IndentGuidePackage.JoinableTaskFactory.Run(async delegate {
await Analysis.ResetAsync().ContinueWith(_ => BeginInvoke((Action)Invalidate), TaskScheduler.Default).ConfigureAwait(true);
});
}
}
/// <summary>
/// Raised when a view option changes.
/// </summary>
async void View_OptionChanged(object sender, EditorOptionChangedEventArgs e)
{
if (e.OptionId == DefaultOptions.IndentSizeOptionId.Name)
{
Analysis = new DocumentAnalyzer(
View.TextSnapshot,
Theme.Behavior,
View.Options.GetOptionValue(DefaultOptions.IndentSizeOptionId),
View.Options.GetOptionValue(DefaultOptions.TabSizeOptionId)
);
GuideBrushCache.Clear();
GlowEffectCache.Clear();
await AnalyzeAndUpdateAdornments();
}
}
/// <summary>
/// Instantiates a new indent guide manager for a view.
/// </summary>
/// <param name="view">The text view to provide guides for.</param>
/// <param name="service">The Indent Guide service.</param>
public IndentGuideView(IWpfTextView view, IIndentGuide service)
{
View = view;
if (!service.Themes.TryGetValue(View.TextDataModel.ContentType.DisplayName, out Theme))
{
Theme = service.DefaultTheme;
}
if (Theme != null && Theme.Behavior != null && Theme.Behavior.Disabled)
{
return;
}
GuideBrushCache = new Dictionary <System.Drawing.Color, Brush>();
GlowEffectCache = new Dictionary <System.Drawing.Color, Effect>();
View.Caret.PositionChanged += Caret_PositionChanged;
View.LayoutChanged += View_LayoutChanged;
View.Options.OptionChanged += View_OptionChanged;
Layer = view.GetAdornmentLayer("IndentGuide");
Canvas = new Canvas();
Canvas.HorizontalAlignment = HorizontalAlignment.Stretch;
Canvas.VerticalAlignment = VerticalAlignment.Stretch;
Layer.AddAdornment(AdornmentPositioningBehavior.OwnerControlled, null, null, Canvas, CanvasRemoved);
Debug.Assert(Theme != null, "No themes loaded");
if (Theme == null)
{
Theme = new IndentTheme();
}
service.ThemesChanged += new EventHandler(Service_ThemesChanged);
Analysis = new DocumentAnalyzer(
View.TextSnapshot,
Theme.Behavior,
View.Options.GetOptionValue(DefaultOptions.IndentSizeOptionId),
View.Options.GetOptionValue(DefaultOptions.TabSizeOptionId)
);
GlobalVisible = service.Visible;
service.VisibleChanged += new EventHandler(Service_VisibleChanged);
var t = AnalyzeAndUpdateAdornments();
}
/// <summary>
/// Raised when the theme is updated.
/// </summary>
async void Service_ThemesChanged(object sender, EventArgs e)
{
var service = (IIndentGuide)sender;
if (!service.Themes.TryGetValue(View.TextDataModel.ContentType.DisplayName, out Theme))
{
Theme = service.DefaultTheme;
}
Analysis = new DocumentAnalyzer(
View.TextSnapshot,
Theme.Behavior,
View.Options.GetOptionValue(DefaultOptions.IndentSizeOptionId),
View.Options.GetOptionValue(DefaultOptions.TabSizeOptionId)
);
GuideBrushCache.Clear();
GlowEffectCache.Clear();
await AnalyzeAndUpdateAdornments();
}