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using System;
using Mono.TextEditor;
using MonoDevelop.Ide.Editor;
using MonoDevelop.Ide.FindInFiles;
using Cairo;
using MonoDevelop.Components;
using MonoDevelop.Ide.Editor.Extension;
namespace MonoDevelop.SourceEditor
{
class UsageSegmentMarker : TextSegmentMarker, ITextSegmentMarker
{
readonly Usage usage;
public Usage Usage {
get {
return usage;
}
}
public UsageSegmentMarker (Usage usage) : base (usage.Offset, usage.Length)
{
this.usage = usage;
}
event EventHandler<TextMarkerMouseEventArgs> ITextSegmentMarker.MousePressed {
add {
}
remove {
}
}
event EventHandler<TextMarkerMouseEventArgs> ITextSegmentMarker.MouseHover {
add {
}
remove {
}
}
object ITextSegmentMarker.Tag {
get;
set;
}
public override void DrawBackground (Mono.TextEditor.MonoTextEditor editor, Context cr, LineMetrics metrics, int startOffset, int endOffset)
{
int markerStart = usage.Offset;
int markerEnd = usage.EndOffset;
if (markerEnd < startOffset || markerStart > endOffset)
return;
double @from;
double to;
var startXPos = metrics.TextRenderStartPosition;
var endXPos = metrics.TextRenderEndPosition;
var y = metrics.LineYRenderStartPosition;
if (markerStart < startOffset && endOffset < markerEnd) {
@from = startXPos;
to = endXPos;
} else {
int start = startOffset < markerStart ? markerStart : startOffset;
int end = endOffset < markerEnd ? endOffset : markerEnd;
uint curIndex = 0, byteIndex = 0;
TextViewMargin.TranslateToUTF8Index (metrics.Layout.LineChars, (uint)(start - startOffset), ref curIndex, ref byteIndex);
int x_pos = metrics.Layout.Layout.IndexToPos ((int)byteIndex).X;
@from = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
TextViewMargin.TranslateToUTF8Index (metrics.Layout.LineChars, (uint)(end - startOffset), ref curIndex, ref byteIndex);
x_pos = metrics.Layout.Layout.IndexToPos ((int)byteIndex).X;
to = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
}
@from = Math.Max (@from, editor.TextViewMargin.XOffset);
to = Math.Max (to, editor.TextViewMargin.XOffset);
if (@from < to) {
Mono.TextEditor.Highlighting.AmbientColor colorStyle;
if ((usage.UsageType & ReferenceUsageType.Write) == ReferenceUsageType.Write ||
(usage.UsageType & ReferenceUsageType.Declariton) == ReferenceUsageType.Declariton) {
colorStyle = editor.ColorStyle.ChangingUsagesRectangle;
} else {
colorStyle = editor.ColorStyle.UsagesRectangle;
}
using (var lg = new LinearGradient (@from + 1, y + 1, to , y + editor.LineHeight)) {
lg.AddColorStop (0, colorStyle.Color);
lg.AddColorStop (1, colorStyle.SecondColor);
cr.SetSource (lg);
cr.RoundedRectangle (@from + 0.5, y + 1.5, to - @from - 1, editor.LineHeight - 2, editor.LineHeight / 4);
cr.FillPreserve ();
}
cr.SetSourceColor (colorStyle.BorderColor);
cr.Stroke ();
}
}
}
}
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