private void ProcessLine(SnapshotSpan span)
{
var textMarkerGeometry = _textView.TextViewLines.GetTextMarkerGeometry(span);
if (textMarkerGeometry == null)
{
return;
}
var bounds = textMarkerGeometry.Bounds;
VisualToolset visualTools = _isTextViewActive ? _activeVisualToolset : _inactiveVisualToolset;
var geometry = new RectangleGeometry(new Rect(0, bounds.Top, _lastWidth, (int)(bounds.Height + 0.5)));
DrawHighlight(geometry, visualTools, span);
}
private void DrawHighlight(Geometry g, VisualToolset visualTools, SnapshotSpan span)
{
if (g.CanFreeze)
{
g.Freeze();
}
var dv = new DrawingVisual();
DrawingContext dContext = dv.RenderOpen();
dContext.DrawGeometry(visualTools.Brush, visualTools.Pen, g);
dContext.Close();
var uiElement = new DrawingVisualHost(dv);
_layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, new object(), uiElement, null);
}
private void OnFormatMappingChanged(object sender, FormatItemsEventArgs e) {
if (e.ChangedItems.Contains(ActiveSelectionPropertiesName)) {
_activeVisualToolset = CreateVisualToolset(ActiveSelectionPropertiesName, SystemColors.HighlightColor);
if (_isTextViewActive) {
Redraw();
}
}
if (e.ChangedItems.Contains(InactiveSelectionPropertiesName)) {
_inactiveVisualToolset = CreateVisualToolset(InactiveSelectionPropertiesName, SystemColors.GrayTextColor);
if (!_isTextViewActive) {
Redraw();
}
}
}
private VisualToolset CreateVisualToolset(string category, Color defaultColor)
{
var dictionary = _editorFormatMap.GetProperties(category);
var toolset = new VisualToolset();
if (dictionary.Contains(EditorFormatDefinition.BackgroundBrushId))
{
toolset.Brush = ((Brush)(dictionary[EditorFormatDefinition.BackgroundBrushId])).Clone();
}
else if (dictionary.Contains(EditorFormatDefinition.BackgroundColorId))
{
toolset.Brush = new SolidColorBrush((Color)dictionary[EditorFormatDefinition.BackgroundColorId]);
}
else
{
toolset.Brush = new SolidColorBrush(defaultColor);
}
if (toolset.Brush.CanFreeze)
{
toolset.Brush.Freeze();
}
const string penResourceName = "BackgroundPen";
if (_textView.Options.IsSimpleGraphicsEnabled() || !dictionary.Contains(penResourceName))
{
var useReducedOpacityForHighContrast = _textView.Options.GetOptionValue(DefaultWpfViewOptions.UseReducedOpacityForHighContrastOptionId);
// Layer opacity should match selection painters
_layer.Opacity = (useReducedOpacityForHighContrast || !SystemParameters.HighContrast) && (toolset.Brush is SolidColorBrush) ? 0.4 : 1;
return(toolset);
}
toolset.Pen = ((Pen)dictionary[penResourceName]).Clone();
if (toolset.Pen.CanFreeze)
{
toolset.Pen.Freeze();
}
_layer.Opacity = 1;
return(toolset);
}
public HistorySelectionTextAdornment(IWpfTextView textView, IEditorFormatMapService editorFormatMapService, IRHistoryProvider historyProvider) {
_textView = textView;
_layer = textView.GetAdornmentLayer("HistorySelectionTextAdornment");
_editorFormatMap = editorFormatMapService.GetEditorFormatMap(_textView);
_history = historyProvider.GetAssociatedRHistory(_textView);
// Advise to events
_editorFormatMap.FormatMappingChanged += OnFormatMappingChanged;
_textView.VisualElement.GotKeyboardFocus += OnGotKeyboardFocus;
_textView.VisualElement.LostKeyboardFocus += OnLostKeyboardFocus;
_textView.LayoutChanged += OnLayoutChanged;
_textView.Closed += OnClosed;
_history.SelectionChanged += OnSelectionChanged;
_activeVisualToolset = CreateVisualToolset(ActiveSelectionPropertiesName, SystemColors.HighlightColor);
_inactiveVisualToolset = CreateVisualToolset(InactiveSelectionPropertiesName, SystemColors.GrayTextColor);
Redraw();
}
public HistorySelectionTextAdornment(IWpfTextView textView, IEditorFormatMapService editorFormatMapService, IRHistoryProvider historyProvider)
{
_textView = textView;
_layer = textView.GetAdornmentLayer("HistorySelectionTextAdornment");
_editorFormatMap = editorFormatMapService.GetEditorFormatMap(_textView);
_history = historyProvider.GetAssociatedRHistory(_textView);
// Advise to events
_editorFormatMap.FormatMappingChanged += OnFormatMappingChanged;
_textView.VisualElement.GotKeyboardFocus += OnGotKeyboardFocus;
_textView.VisualElement.LostKeyboardFocus += OnLostKeyboardFocus;
_textView.LayoutChanged += OnLayoutChanged;
_textView.Closed += OnClosed;
_history.SelectionChanged += OnSelectionChanged;
_activeVisualToolset = CreateVisualToolset(ActiveSelectionPropertiesName, SystemColors.HighlightColor);
_inactiveVisualToolset = CreateVisualToolset(InactiveSelectionPropertiesName, SystemColors.GrayTextColor);
Redraw();
}
private void OnFormatMappingChanged(object sender, FormatItemsEventArgs e)
{
if (e.ChangedItems.Contains(ActiveSelectionPropertiesName))
{
_activeVisualToolset = CreateVisualToolset(ActiveSelectionPropertiesName, SystemColors.HighlightColor);
if (_isTextViewActive)
{
Redraw();
}
}
if (e.ChangedItems.Contains(InactiveSelectionPropertiesName))
{
_inactiveVisualToolset = CreateVisualToolset(InactiveSelectionPropertiesName, SystemColors.GrayTextColor);
if (!_isTextViewActive)
{
Redraw();
}
}
}
private VisualToolset CreateVisualToolset(string category, Color defaultColor) {
var dictionary = _editorFormatMap.GetProperties(category);
var toolset = new VisualToolset();
if (dictionary.Contains(EditorFormatDefinition.BackgroundBrushId)) {
toolset.Brush = ((Brush) (dictionary[EditorFormatDefinition.BackgroundBrushId])).Clone();
} else if (dictionary.Contains(EditorFormatDefinition.BackgroundColorId)) {
toolset.Brush = new SolidColorBrush((Color) dictionary[EditorFormatDefinition.BackgroundColorId]);
} else {
toolset.Brush = new SolidColorBrush(defaultColor);
}
if (toolset.Brush.CanFreeze) {
toolset.Brush.Freeze();
}
const string penResourceName = "BackgroundPen";
if (_textView.Options.IsSimpleGraphicsEnabled() || !dictionary.Contains(penResourceName)) {
var useReducedOpacityForHighContrast = _textView.Options.GetOptionValue(DefaultWpfViewOptions.UseReducedOpacityForHighContrastOptionId);
// Layer opacity should match selection painters
_layer.Opacity = (useReducedOpacityForHighContrast || !SystemParameters.HighContrast) && (toolset.Brush is SolidColorBrush) ? 0.4 : 1;
return toolset;
}
toolset.Pen = ((Pen)dictionary[penResourceName]).Clone();
if (toolset.Pen.CanFreeze) {
toolset.Pen.Freeze();
}
_layer.Opacity = 1;
return toolset;
}
private void DrawHighlight(Geometry g, VisualToolset visualTools, SnapshotSpan span) {
if (g.CanFreeze) {
g.Freeze();
}
var dv = new DrawingVisual();
DrawingContext dContext = dv.RenderOpen();
dContext.DrawGeometry(visualTools.Brush, visualTools.Pen, g);
dContext.Close();
var uiElement = new DrawingVisualHost(dv);
_layer.AddAdornment(AdornmentPositioningBehavior.TextRelative, span, new object(), uiElement, null);
}
