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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 System.Text;
using Cairo;
using Mono.TextEditor.Highlighting;
using System.Collections.Generic;
using MonoDevelop.Core.Text;
using MonoDevelop.Components;
namespace Mono.TextEditor
{
class TextSegmentMarker : TreeSegment
{
internal int insertId;
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 (ISegment textSegment) : base (textSegment)
{
}
public virtual void Draw (MonoTextEditor editor, Context cr, LineMetrics metrics, int startOffset, int endOffset)
{
}
public virtual void DrawBackground (MonoTextEditor editor, Context cr, LineMetrics metrics, int startOffset, int endOffset)
{
}
internal virtual MonoDevelop.Ide.Editor.Highlighting.ChunkStyle GetStyle (MonoDevelop.Ide.Editor.Highlighting.ChunkStyle baseStyle)
{
return baseStyle;
}
}
internal interface IChunkMarker
{
void TransformChunks (List<MonoDevelop.Ide.Editor.Highlighting.ColoredSegment> chunks);
void ChangeForeColor (MonoTextEditor editor, MonoDevelop.Ide.Editor.Highlighting.ColoredSegment chunk, ref Cairo.Color color);
}
class UnderlineTextSegmentMarker : TextSegmentMarker
{
public UnderlineTextSegmentMarker (Cairo.Color color, ISegment textSegment, MonoDevelop.Ide.Editor.TextSegmentMarkerEffect effect = MonoDevelop.Ide.Editor.TextSegmentMarkerEffect.WavedLine) : base (textSegment)
{
this.Color = color;
this.effect = effect;
}
public UnderlineTextSegmentMarker (string colorName, ISegment textSegment, MonoDevelop.Ide.Editor.TextSegmentMarkerEffect effect = MonoDevelop.Ide.Editor.TextSegmentMarkerEffect.WavedLine) : base (textSegment)
{
this.ColorName = colorName;
this.effect = effect;
}
public string ColorName { get; set; }
public Cairo.Color Color { get; set; }
MonoDevelop.Ide.Editor.TextSegmentMarkerEffect effect;
public MonoDevelop.Ide.Editor.TextSegmentMarkerEffect Effect {
get {
return effect;
}
}
public override void Draw (MonoTextEditor editor, Cairo.Context cr, LineMetrics metrics, int startOffset, int endOffset)
{
int markerStart = Segment.Offset;
int markerEnd = Segment.EndOffset;
if (markerEnd < startOffset || markerStart > endOffset)
return;
var layout = metrics.Layout.Layout;
double startXPos = metrics.TextRenderStartPosition;
double endXPos = metrics.TextRenderEndPosition;
double y = metrics.LineYRenderStartPosition;
if (editor.IsSomethingSelected) {
var range = editor.SelectionRange;
if (range.Contains (markerStart)) {
int end = System.Math.Min (markerEnd, range.EndOffset);
InternalDraw (markerStart, end, editor, cr, metrics, true, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.EndOffset, markerEnd, editor, cr, metrics, false, startOffset, endOffset, y, startXPos, endXPos);
return;
}
if (range.Contains (markerEnd)) {
InternalDraw (markerStart, range.Offset, editor, cr, metrics, false, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.Offset, markerEnd, editor, cr, metrics, true, startOffset, endOffset, y, startXPos, endXPos);
return;
}
if (markerStart <= range.Offset && range.EndOffset <= markerEnd) {
InternalDraw (markerStart, range.Offset, editor, cr, metrics, false, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.Offset, range.EndOffset, editor, cr, metrics, true, startOffset, endOffset, y, startXPos, endXPos);
InternalDraw (range.EndOffset, markerEnd, editor, cr, metrics, false, startOffset, endOffset, y, startXPos, endXPos);
return;
}
}
InternalDraw (markerStart, markerEnd, editor, cr, metrics, false, startOffset, endOffset, y, startXPos, endXPos);
}
void InternalDraw (int markerStart, int markerEnd, MonoTextEditor editor, Cairo.Context cr, LineMetrics metrics, bool selected, int startOffset, int endOffset, double y, double startXPos, double endXPos)
{
if (markerStart >= markerEnd)
return;
var layout = metrics.Layout.Layout;
double @from;
double to;
if (markerStart < startOffset && endOffset < markerEnd) {
@from = startXPos;
to = endXPos;
} else {
int start = Math.Max (startOffset, markerStart);
int end = Math.Min (endOffset, markerEnd);
int /*lineNr,*/ x_pos;
uint curIndex = 0;
uint byteIndex = 0;
uint idx = (uint)Math.Min (Math.Max (0, start - startOffset), metrics.Layout.Text.Length - 1);
metrics.Layout.TranslateToUTF8Index (idx, ref curIndex, ref byteIndex);
x_pos = layout.IndexToPos (System.Math.Max (0, (int)byteIndex)).X;
@from = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
idx = (uint)Math.Min (Math.Max (0, end - startOffset), metrics.Layout.Text.Length - 1);
metrics.Layout.TranslateToUTF8Index (idx, ref curIndex, ref byteIndex);
x_pos = layout.IndexToPos (System.Math.Max (0, (int)byteIndex)).X;
to = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
var line = editor.GetLineByOffset (endOffset);
if (markerEnd > endOffset || @from == to) {
to += editor.TextViewMargin.CharWidth;
if (@from >= to) {
@from = to - editor.TextViewMargin.CharWidth;
}
}
}
@from = System.Math.Max (@from, editor.TextViewMargin.XOffset);
to = System.Math.Max (to, editor.TextViewMargin.XOffset);
if (Length == 0)
to += editor.TextViewMargin.charWidth;
if (@from >= to) {
return;
}
double height = editor.LineHeight / 5;
if (string.IsNullOrEmpty (ColorName)) {
cr.SetSourceColor (Color);
} else {
HslColor color;
editor.EditorTheme.TryGetColor (ColorName, out color);
cr.SetSourceColor (color);
}
cr.LineWidth = editor.Options.Zoom;
switch (Effect) {
case MonoDevelop.Ide.Editor.TextSegmentMarkerEffect.WavedLine:
cr.Rectangle (@from, 0, to - @from, editor.Allocation.Height);
cr.Clip ();
Pango.CairoHelper.ShowErrorUnderline (cr, metrics.TextRenderStartPosition, y + editor.LineHeight - height, editor.Allocation.Width, height);
cr.ResetClip ();
break;
case MonoDevelop.Ide.Editor.TextSegmentMarkerEffect.DottedLine:
cr.Save ();
cr.MoveTo (@from, y + editor.LineHeight - editor.Options.Zoom - 0.5);
cr.LineTo (to, y + editor.LineHeight - editor.Options.Zoom - 0.5);
cr.SetDash (new double [] { 2 * editor.Options.Zoom, 2 * editor.Options.Zoom }, 0);
cr.Stroke ();
cr.Restore ();
break;
case MonoDevelop.Ide.Editor.TextSegmentMarkerEffect.Underline:
cr.MoveTo (@from, y + editor.LineHeight - editor.Options.Zoom - 0.5);
cr.LineTo (to, y + editor.LineHeight - editor.Options.Zoom - 0.5);
cr.Stroke ();
break;
default:
throw new InvalidOperationException ("Invalid text segment marker effect " + Effect + " not supported by this marker.");
}
}
}
}
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