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//
// TextSegmentMarker.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Cairo;
using Mono.TextEditor.Highlighting;
using System.Collections.Generic;
namespace Mono.TextEditor
{
public class TextSegmentMarker : TreeSegment
{
public virtual TextLineMarkerFlags Flags {
get;
set;
}
bool isVisible = true;
public virtual bool IsVisible {
get { return isVisible; }
set { isVisible = value; }
}
public TextSegmentMarker (int offset, int length) : base (offset, length)
{
}
public TextSegmentMarker (TextSegment textSegment) : base (textSegment)
{
}
public virtual void Draw (TextEditor editor, Cairo.Context cr, Pango.Layout layout, bool selected, int startOffset, int endOffset, double y, double startXPos, double endXPos)
{
}
public virtual ChunkStyle GetStyle (ChunkStyle baseStyle)
{
return baseStyle;
}
}
public interface IChunkMarker
{
void TransformChunks (List<Chunk> chunks);
void ChangeForeColor (TextEditor editor, Chunk chunk, ref Cairo.Color color);
}
public class UnderlineTextSegmentMarker : TextSegmentMarker
{
public UnderlineTextSegmentMarker (Cairo.Color color, TextSegment textSegment) : base (textSegment)
{
this.Color = color;
this.Wave = true;
}
public UnderlineTextSegmentMarker (string colorName, TextSegment textSegment) : base (textSegment)
{
this.ColorName = colorName;
this.Wave = true;
}
public string ColorName { get; set; }
public Cairo.Color Color { get; set; }
public bool Wave { get; set; }
public override void Draw (TextEditor editor, Cairo.Context cr, Pango.Layout layout, bool selected, int startOffset, int endOffset, double y, double startXPos, double endXPos)
{
int markerStart = Segment.Offset;
int markerEnd = Segment.EndOffset;
if (markerEnd < startOffset || markerStart > endOffset)
return;
if (editor.IsSomethingSelected) {
var range = editor.SelectionRange;
if (range.Contains (markerStart)) {
int end = System.Math.Min (markerEnd, range.EndOffset);
InternalDraw (markerStart, end, editor, cr, layout, true, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.EndOffset, markerEnd, editor, cr, layout, false, startOffset, endOffset, y, startXPos, endXPos);
return;
}
if (range.Contains (markerEnd)) {
InternalDraw (markerStart, range.Offset, editor, cr, layout, false, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.Offset, markerEnd, editor, cr, layout, true, startOffset, endOffset, y, startXPos, endXPos);
return;
}
if (markerStart <= range.Offset && range.EndOffset <= markerEnd) {
InternalDraw (markerStart, range.Offset, editor, cr, layout, false, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.Offset, range.EndOffset, editor, cr, layout, true, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.EndOffset, markerEnd, editor, cr, layout, false, startOffset, endOffset, y, startXPos, endXPos);
return;
}
}
InternalDraw (markerStart, markerEnd, editor, cr, layout, false, startOffset, endOffset, y, startXPos, endXPos);
}
void InternalDraw (int markerStart, int markerEnd, TextEditor editor, Cairo.Context cr, Pango.Layout layout, bool selected, int startOffset, int endOffset, double y, double startXPos, double endXPos)
{
if (markerStart >= markerEnd)
return;
double @from;
double to;
if (markerStart < startOffset && endOffset < markerEnd) {
@from = startXPos;
to = endXPos;
} else {
int start = startOffset < markerStart ? markerStart : startOffset;
int end = endOffset < markerEnd ? endOffset : markerEnd;
int /*lineNr,*/ x_pos;
x_pos = layout.IndexToPos (start - startOffset).X;
@from = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
x_pos = layout.IndexToPos (end - startOffset).X;
to = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
}
@from = System.Math.Max (@from, editor.TextViewMargin.XOffset);
to = System.Math.Max (to, editor.TextViewMargin.XOffset);
if (@from >= to) {
return;
}
double height = editor.LineHeight / 5;
if (selected) {
cr.SetSourceColor (editor.ColorStyle.SelectedText.Foreground);
} else {
cr.SetSourceColor (ColorName == null ? Color : editor.ColorStyle.GetChunkStyle (ColorName).Foreground);
}
if (Wave) {
Pango.CairoHelper.ShowErrorUnderline (cr, @from, y + editor.LineHeight - height, to - @from, height);
} else {
cr.LineWidth = 1;
cr.MoveTo (@from, y + editor.LineHeight - 1.5);
cr.LineTo (to, y + editor.LineHeight - 1.5);
cr.Stroke ();
}
}
}
}
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