protected override LayoutWrapper RenderLine(long line)
{
Pango.Layout layout = new Pango.Layout(Editor.PangoContext);
layout.FontDescription = Editor.Options.Font;
StringBuilder sb = new StringBuilder();
long startOffset = line * Editor.BytesInRow;
long endOffset = System.Math.Min(startOffset + Editor.BytesInRow, Data.Length);
byte[] lineBytes = Data.GetBytes(startOffset, (int)(endOffset - startOffset));
for (int i = 0; i < lineBytes.Length; i++)
{
byte b = lineBytes[i];
char ch = (char)b;
if (b < 128 && (Char.IsLetterOrDigit(ch) || Char.IsPunctuation(ch)))
{
sb.Append(ch);
}
else
{
sb.Append(".");
}
}
layout.SetText(sb.ToString());
char[] lineChars = layout.Text.ToCharArray();
Margin.LayoutWrapper result = new LayoutWrapper(layout);
uint curIndex = 0, byteIndex = 0;
if (Data.IsSomethingSelected)
{
ISegment selection = Data.MainSelection.Segment;
HandleSelection(selection.Offset, selection.EndOffset, startOffset, endOffset, null, delegate(long start, long end)
{
Pango.AttrForeground selectedForeground = new Pango.AttrForeground(Style.Selection.Red,
Style.Selection.Green,
Style.Selection.Blue);
selectedForeground.StartIndex = TranslateToUTF8Index(lineChars, (uint)(start - startOffset), ref curIndex, ref byteIndex);
selectedForeground.EndIndex = TranslateToUTF8Index(lineChars, (uint)(end - startOffset), ref curIndex, ref byteIndex);
result.Add(selectedForeground);
Pango.AttrBackground attrBackground = new Pango.AttrBackground(Style.SelectionBg.Red,
Style.SelectionBg.Green,
Style.SelectionBg.Blue);
attrBackground.StartIndex = selectedForeground.StartIndex;
attrBackground.EndIndex = selectedForeground.EndIndex;
result.Add(attrBackground);
});
}
result.SetAttributes();
return(result);
}
public void SetForegroundBrush(IBrush brush, int startIndex, int count)
{
var scb = brush as SolidColorBrush;
if (scb != null)
{
var color = new Pango.Color();
color.Parse(string.Format("#{0}", scb.Color.ToString().Substring(3)));
var brushAttr = new Pango.AttrForeground(color);
brushAttr.StartIndex = (uint)TextIndexToPangoIndex(startIndex);
brushAttr.EndIndex = (uint)TextIndexToPangoIndex(startIndex + count);
Layout.Attributes.Insert(brushAttr);
}
}
protected override LayoutWrapper RenderLine(long line)
{
Pango.Layout layout = new Pango.Layout(Editor.PangoContext);
layout.FontDescription = Editor.Options.Font;
layout.Tabs = tabArray;
StringBuilder sb = new StringBuilder();
long startOffset = line * Editor.BytesInRow;
long endOffset = System.Math.Min(startOffset + Editor.BytesInRow, Data.Length);
byte[] lineBytes = Data.GetBytes(startOffset, (int)(endOffset - startOffset));
for (int i = 0; i < lineBytes.Length; i++)
{
sb.Append(string.Format("{0:X2}", lineBytes[i]));
if (i % Editor.Options.GroupBytes == 0)
{
sb.Append("\t");
}
}
layout.SetText(sb.ToString());
char[] lineChars = sb.ToString().ToCharArray();
Margin.LayoutWrapper result = new LayoutWrapper(layout);
uint curIndex = 0, byteIndex = 0;
if (Data.IsSomethingSelected)
{
ISegment selection = Data.MainSelection.Segment;
HandleSelection(selection.Offset, selection.EndOffset, startOffset, endOffset, null, delegate(long start, long end)
{
Pango.AttrForeground selectedForeground = new Pango.AttrForeground(Style.Selection.Red,
Style.Selection.Green,
Style.Selection.Blue);
selectedForeground.StartIndex = TranslateToUTF8Index(lineChars, TranslateColumn(start - startOffset), ref curIndex, ref byteIndex);
selectedForeground.EndIndex = TranslateToUTF8Index(lineChars, TranslateColumn(end - startOffset) - 1, ref curIndex, ref byteIndex);
result.Add(selectedForeground);
Pango.AttrBackground attrBackground = new Pango.AttrBackground(Style.SelectionBg.Red,
Style.SelectionBg.Green,
Style.SelectionBg.Blue);
attrBackground.StartIndex = selectedForeground.StartIndex;
attrBackground.EndIndex = selectedForeground.EndIndex;
result.Add(attrBackground);
});
}
result.SetAttributes();
return(result);
}
public FormattedTextImpl(
Pango.Context context,
string text,
Typeface typeface,
TextAlignment textAlignment,
TextWrapping wrapping,
Size constraint,
IReadOnlyList <FormattedTextStyleSpan> spans)
{
Contract.Requires <ArgumentNullException>(context != null);
Contract.Requires <ArgumentNullException>(text != null);
Layout = new Pango.Layout(context);
Layout.SetText(text);
Layout.FontDescription = new Pango.FontDescription
{
Family = typeface?.FontFamilyName ?? "monospace",
Size = Pango.Units.FromDouble(CorrectScale(typeface?.FontSize ?? 12)),
Style = (Pango.Style)(typeface?.Style ?? FontStyle.Normal),
Weight = (typeface?.Weight ?? FontWeight.Normal).ToCairo(),
};
Layout.Alignment = textAlignment.ToCairo();
Layout.Attributes = new Pango.AttrList();
Layout.Width = double.IsPositiveInfinity(constraint.Width) ? -1 : Pango.Units.FromDouble(constraint.Width);
if (spans != null)
{
foreach (var span in spans)
{
if (span.ForegroundBrush is SolidColorBrush scb)
{
var color = new Pango.Color();
color.Parse(string.Format("#{0}", scb.Color.ToString().Substring(3)));
var brushAttr = new Pango.AttrForeground(color);
brushAttr.StartIndex = (uint)TextIndexToPangoIndex(span.StartIndex);
brushAttr.EndIndex = (uint)TextIndexToPangoIndex(span.StartIndex + span.Length);
this.Layout.Attributes.Insert(brushAttr);
}
}
}
Size = Measure();
}
// TODO: GTK+ 3.2 adds a placeholder-text property, but for now
// we have to handle it ourselves
protected override bool OnDrawn(Cairo.Context cr)
{
if (Text.Length > 0 || HasFocus || EmptyMessage == null)
{
return(base.OnDrawn(cr));
}
Layout.SetMarkup(EmptyMessage);
Gdk.RGBA color;
if (!StyleContext.LookupColor("placeholder_text_color", out color))
{
color = StyleContext.GetColor(StateFlags.Insensitive);
}
Pango.Attribute attr = new Pango.AttrForeground(Convert.ToUInt16(color.Red * 65535),
Convert.ToUInt16(color.Green * 65535), Convert.ToUInt16(color.Blue * 65535));
Layout.Attributes.Insert(attr);
return(base.OnDrawn(cr));
}
public double ColumnToX (DocumentLine line, int column)
{
column--;
// calculate virtual indentation
if (column > 0 && line.Length == 0 && textEditor.GetTextEditorData ().HasIndentationTracker) {
using (var l = PangoUtil.CreateLayout (textEditor, textEditor.GetTextEditorData ().IndentationTracker.GetIndentationString (line.Offset))) {
l.Alignment = Pango.Alignment.Left;
l.FontDescription = textEditor.Options.Font;
l.Tabs = tabArray;
Pango.Rectangle ink_rect, logical_rect;
l.GetExtents (out ink_rect, out logical_rect);
return (logical_rect.Width + Pango.Scale.PangoScale - 1) / Pango.Scale.PangoScale;
}
}
if (line == null || line.Length == 0 || column < 0)
return 0;
int logicalRulerColumn = line.GetLogicalColumn (textEditor.GetTextEditorData (), textEditor.Options.RulerColumn);
int lineOffset = line.Offset;
StringBuilder textBuilder = new StringBuilder ();
ISyntaxMode mode = Document.SyntaxMode != null && textEditor.Options.EnableSyntaxHighlighting ? Document.SyntaxMode : new SyntaxMode (Document);
var startChunk = GetCachedChunks (mode, Document, textEditor.ColorStyle, line, lineOffset, line.Length);
foreach (Chunk chunk in startChunk) {
try {
textBuilder.Append (Document.GetTextAt (chunk));
} catch (Exception e) {
Console.WriteLine (e);
return 0;
}
}
string lineText = textBuilder.ToString ();
char[] lineChars = lineText.ToCharArray ();
bool containsPreedit = textEditor.ContainsPreedit (lineOffset, line.Length);
uint preeditLength = 0;
if (containsPreedit) {
lineText = lineText.Insert (textEditor.preeditOffset - lineOffset, textEditor.preeditString);
preeditLength = (uint)textEditor.preeditString.Length;
}
if (column < lineText.Length)
lineText = lineText.Substring (0, column);
var layout = PangoUtil.CreateLayout (textEditor, lineText);
layout.Alignment = Pango.Alignment.Left;
layout.FontDescription = textEditor.Options.Font;
layout.Tabs = tabArray;
int startOffset = lineOffset, endOffset = lineOffset + line.Length;
uint curIndex = 0, byteIndex = 0;
uint curChunkIndex = 0, byteChunkIndex = 0;
List<Pango.Attribute> attributes = new List<Pango.Attribute> ();
uint oldEndIndex = 0;
Cairo.Color curFgColor = textEditor.ColorStyle.PlainText.Foreground;
Cairo.Color curBgColor = textEditor.ColorStyle.PlainText.Background;
var curWeight = Xwt.Drawing.FontWeight.Normal;
var curStyle = Xwt.Drawing.FontStyle.Normal;
foreach (Chunk chunk in startChunk) {
ChunkStyle chunkStyle = chunk != null ? textEditor.ColorStyle.GetChunkStyle (chunk) : null;
foreach (TextLineMarker marker in line.Markers)
chunkStyle = marker.GetStyle (chunkStyle);
if (chunkStyle != null) {
startOffset = chunk.Offset;
endOffset = chunk.EndOffset;
uint startIndex = (uint)(oldEndIndex);
uint endIndex = (uint)(startIndex + chunk.Length);
oldEndIndex = endIndex;
if (containsPreedit) {
if (textEditor.preeditOffset < startOffset)
startIndex += preeditLength;
if (textEditor.preeditOffset < endOffset)
endIndex += preeditLength;
}
HandleSelection (lineOffset, logicalRulerColumn, - 1, -1, chunk.Offset, chunk.EndOffset, delegate(int start, int end) {
var color = textEditor.ColorStyle.GetForeground (chunkStyle);
var si = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
var ei = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
if (!color.Equals (curFgColor)) {
curFgColor = color;
var foreGround = new Pango.AttrForeground (
(ushort)(color.R * ushort.MaxValue),
(ushort)(color.G * ushort.MaxValue),
(ushort)(color.B * ushort.MaxValue));
foreGround.StartIndex = si;
foreGround.EndIndex = ei;
attributes.Add (foreGround);
}
if (!chunkStyle.TransparentBackground) {
color = chunkStyle.Background;
if (!color.Equals (curBgColor)) {
var background = new Pango.AttrBackground (
(ushort)(color.R * ushort.MaxValue),
(ushort)(color.G * ushort.MaxValue),
(ushort)(color.B * ushort.MaxValue));
background.StartIndex = si;
background.EndIndex = ei;
attributes.Add (background);
}
}
}, delegate(int start, int end) {
Pango.AttrForeground selectedForeground;
if (!SelectionColor.TransparentForeground) {
var color = SelectionColor.Foreground;
if (color.Equals (curFgColor))
return;
curFgColor = color;
selectedForeground = new Pango.AttrForeground (
(ushort)(color.R * ushort.MaxValue),
(ushort)(color.G * ushort.MaxValue),
(ushort)(color.B * ushort.MaxValue));
} else {
var color = ColorStyle.GetForeground (chunkStyle);
if (color.Equals (curFgColor))
return;
curFgColor = color;
selectedForeground = new Pango.AttrForeground (
(ushort)(color.R * ushort.MaxValue),
(ushort)(color.G * ushort.MaxValue),
(ushort)(color.B * ushort.MaxValue));
}
selectedForeground.StartIndex = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
selectedForeground.EndIndex = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
attributes.Add (selectedForeground);
});
var translatedStartIndex = TranslateToUTF8Index (lineChars, (uint)startIndex, ref curChunkIndex, ref byteChunkIndex);
var translatedEndIndex = TranslateToUTF8Index (lineChars, (uint)endIndex, ref curChunkIndex, ref byteChunkIndex);
if (chunkStyle.FontWeight != curWeight) {
curWeight = chunkStyle.FontWeight;
var attrWeight = new Pango.AttrWeight ((Pango.Weight)chunkStyle.FontWeight);
attrWeight.StartIndex = translatedStartIndex;
attrWeight.EndIndex = translatedEndIndex;
attributes.Add (attrWeight);
}
if (chunkStyle.FontStyle != curStyle) {
curStyle = chunkStyle.FontStyle;
Pango.AttrStyle attrStyle = new Pango.AttrStyle ((Pango.Style)chunkStyle.FontStyle);
attrStyle.StartIndex = translatedStartIndex;
attrStyle.EndIndex = translatedEndIndex;
attributes.Add (attrStyle);
}
if (chunkStyle.Underline) {
var attrUnderline = new Pango.AttrUnderline (Pango.Underline.Single);
attrUnderline.StartIndex = translatedStartIndex;
attrUnderline.EndIndex = translatedEndIndex;
attributes.Add (attrUnderline);
}
}
}
Pango.AttrList attributeList = new Pango.AttrList ();
attributes.ForEach (attr => attributeList.Insert (attr));
layout.Attributes = attributeList;
Pango.Rectangle inkrect, logicalrect;
layout.GetExtents (out inkrect, out logicalrect);
attributes.ForEach (attr => attr.Dispose ());
attributeList.Dispose ();
layout.Dispose ();
return (logicalrect.Width + Pango.Scale.PangoScale - 1) / Pango.Scale.PangoScale;
}
public double ColumnToX (LineSegment line, int column)
{
column--;
if (line == null || line.Length == 0 || column < 0)
return 0;
int logicalRulerColumn = line.GetLogicalColumn (textEditor.GetTextEditorData (), textEditor.Options.RulerColumn);
int lineOffset = line.Offset;
StringBuilder textBuilder = new StringBuilder ();
ISyntaxMode mode = Document.SyntaxMode != null && textEditor.Options.EnableSyntaxHighlighting ? Document.SyntaxMode : new SyntaxMode (Document);
var startChunk = GetCachedChunks (mode, Document, textEditor.ColorStyle, line, lineOffset, line.Length);
foreach (Chunk chunk in startChunk) {
try {
textBuilder.Append (Document.GetTextAt (chunk));
} catch (Exception e) {
Console.WriteLine (e);
return 0;
}
}
string lineText = textBuilder.ToString ();
char[] lineChars = lineText.ToCharArray ();
bool containsPreedit = textEditor.ContainsPreedit (lineOffset, line.Length);
uint preeditLength = 0;
if (containsPreedit) {
lineText = lineText.Insert (textEditor.preeditOffset - lineOffset, textEditor.preeditString);
preeditLength = (uint)textEditor.preeditString.Length;
}
if (column < lineText.Length)
lineText = lineText.Substring (0, column);
var layout = PangoUtil.CreateLayout (textEditor, lineText);
layout.Alignment = Pango.Alignment.Left;
layout.FontDescription = textEditor.Options.Font;
layout.Tabs = tabArray;
int startOffset = lineOffset, endOffset = lineOffset + line.Length;
uint curIndex = 0, byteIndex = 0;
uint curChunkIndex = 0, byteChunkIndex = 0;
List<Pango.Attribute> attributes = new List<Pango.Attribute> ();
uint oldEndIndex = 0;
foreach (Chunk chunk in startChunk) {
ChunkStyle chunkStyle = chunk != null ? textEditor.ColorStyle.GetChunkStyle (chunk) : null;
foreach (TextMarker marker in line.Markers)
chunkStyle = marker.GetStyle (chunkStyle);
if (chunkStyle != null) {
startOffset = chunk.Offset;
endOffset = chunk.EndOffset;
uint startIndex = (uint)(oldEndIndex);
uint endIndex = (uint)(startIndex + chunk.Length);
oldEndIndex = endIndex;
if (containsPreedit) {
if (textEditor.preeditOffset < startOffset)
startIndex += preeditLength;
if (textEditor.preeditOffset < endOffset)
endIndex += preeditLength;
}
HandleSelection (lineOffset, logicalRulerColumn, - 1, -1, chunk.Offset, chunk.EndOffset, delegate(int start, int end) {
Pango.AttrForeground foreGround = new Pango.AttrForeground (chunkStyle.Color.Red, chunkStyle.Color.Green, chunkStyle.Color.Blue);
foreGround.StartIndex = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
foreGround.EndIndex = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
attributes.Add (foreGround);
if (!chunkStyle.TransparentBackround) {
var background = new Pango.AttrBackground (chunkStyle.BackgroundColor.Red, chunkStyle.BackgroundColor.Green, chunkStyle.BackgroundColor.Blue);
background.StartIndex = foreGround.StartIndex;
background.EndIndex = foreGround.EndIndex;
attributes.Add (background);
}
}, delegate(int start, int end) {
Pango.AttrForeground selectedForeground = new Pango.AttrForeground (SelectionColor.Color.Red, SelectionColor.Color.Green, SelectionColor.Color.Blue);
selectedForeground.StartIndex = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
selectedForeground.EndIndex = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
attributes.Add (selectedForeground);
});
var translatedStartIndex = TranslateToUTF8Index (lineChars, (uint)startIndex, ref curChunkIndex, ref byteChunkIndex);
var translatedEndIndex = TranslateToUTF8Index (lineChars, (uint)endIndex, ref curChunkIndex, ref byteChunkIndex);
if (chunkStyle.Bold) {
Pango.AttrWeight attrWeight = new Pango.AttrWeight (Pango.Weight.Bold);
attrWeight.StartIndex = translatedStartIndex;
attrWeight.EndIndex = translatedEndIndex;
attributes.Add (attrWeight);
}
if (chunkStyle.Italic) {
Pango.AttrStyle attrStyle = new Pango.AttrStyle (Pango.Style.Italic);
attrStyle.StartIndex = translatedStartIndex;
attrStyle.EndIndex = translatedEndIndex;
attributes.Add (attrStyle);
}
if (chunkStyle.Underline) {
Pango.AttrUnderline attrUnderline = new Pango.AttrUnderline (Pango.Underline.Single);
attrUnderline.StartIndex = translatedStartIndex;
attrUnderline.EndIndex = translatedEndIndex;
attributes.Add (attrUnderline);
}
}
}
Pango.AttrList attributeList = new Pango.AttrList ();
attributes.ForEach (attr => attributeList.Insert (attr));
layout.Attributes = attributeList;
Pango.Rectangle ink_rect, logical_rect;
layout.GetExtents (out ink_rect, out logical_rect);
attributes.ForEach (attr => attr.Dispose ());
attributeList.Dispose ();
layout.Dispose ();
return (logical_rect.Width + Pango.Scale.PangoScale - 1) / Pango.Scale.PangoScale;
}
public void SetForegroundBrush(IBrush brush, int startIndex, int count)
{
var scb = brush as SolidColorBrush;
if (scb != null)
{
var color = new Pango.Color();
color.Parse(string.Format("#{0}", scb.Color.ToString().Substring(3)));
var brushAttr = new Pango.AttrForeground(color);
brushAttr.StartIndex = (uint)TextIndexToPangoIndex(startIndex);
brushAttr.EndIndex = (uint)TextIndexToPangoIndex(startIndex + count);
Layout.Attributes.Insert(brushAttr);
}
}
protected override LayoutWrapper RenderLine (long line)
{
Pango.Layout layout = new Pango.Layout (Editor.PangoContext);
layout.FontDescription = Editor.Options.Font;
layout.Tabs = tabArray;
StringBuilder sb = new StringBuilder ();
long startOffset = line * Editor.BytesInRow;
long endOffset = System.Math.Min (startOffset + Editor.BytesInRow, Data.Length);
byte[] lineBytes = Data.GetBytes (startOffset, (int)(endOffset - startOffset));
for (int i = 0; i < lineBytes.Length; i++) {
sb.Append (string.Format ("{0:X2}", lineBytes[i]));
if (i % Editor.Options.GroupBytes == 0)
sb.Append ("\t");
}
layout.SetText (sb.ToString ());
char[] lineChars = sb.ToString ().ToCharArray ();
Margin.LayoutWrapper result = new LayoutWrapper (layout);
uint curIndex = 0, byteIndex = 0;
if (Data.IsSomethingSelected) {
ISegment selection = Data.MainSelection.Segment;
HandleSelection (selection.Offset, selection.EndOffset, startOffset, endOffset, null, delegate(long start, long end) {
Pango.AttrForeground selectedForeground = new Pango.AttrForeground (Style.Selection.Red,
Style.Selection.Green,
Style.Selection.Blue);
selectedForeground.StartIndex = TranslateToUTF8Index (lineChars, TranslateColumn (start - startOffset), ref curIndex, ref byteIndex);
selectedForeground.EndIndex = TranslateToUTF8Index (lineChars, TranslateColumn (end - startOffset) - 1, ref curIndex, ref byteIndex);
result.Add (selectedForeground);
Pango.AttrBackground attrBackground = new Pango.AttrBackground (Style.SelectionBg.Red,
Style.SelectionBg.Green,
Style.SelectionBg.Blue);
attrBackground.StartIndex = selectedForeground.StartIndex;
attrBackground.EndIndex = selectedForeground.EndIndex;
result.Add (attrBackground);
});
}
result.SetAttributes ();
return result;
}
protected virtual void FindEntry_ExposeEvent(object o, Gtk.ExposeEventArgs args)
{
if (m_findEntry.Text != s_DefaultSearchText)
return;
var length = m_findEntry.Text.Length;
var attr = new Pango.AttrForeground (0xFFFF / 2, 0xFFFF / 2, 0xFFFF / 2);
attr.StartIndex = (uint)0;
attr.EndIndex = (uint)length;
var attrs = m_findEntry.Layout.Attributes;
attrs.Insert (attr);
m_findEntry.Layout.Attributes = attrs;
}
protected override LayoutWrapper RenderLine (long line)
{
Pango.Layout layout = new Pango.Layout (Editor.PangoContext);
layout.FontDescription = Editor.Options.Font;
StringBuilder sb = new StringBuilder ();
long startOffset = line * Editor.BytesInRow;
long endOffset = System.Math.Min (startOffset + Editor.BytesInRow, Data.Length);
byte[] lineBytes = Data.GetBytes (startOffset, (int)(endOffset - startOffset));
for (int i = 0; i < lineBytes.Length; i++) {
byte b = lineBytes[i];
char ch = (char)b;
if (b < 128 && (Char.IsLetterOrDigit (ch) || Char.IsPunctuation (ch))) {
sb.Append (ch);
} else {
sb.Append (".");
}
}
layout.SetText (sb.ToString ());
char[] lineChars = layout.Text.ToCharArray ();
Margin.LayoutWrapper result = new LayoutWrapper (layout);
uint curIndex = 0, byteIndex = 0;
if (Data.IsSomethingSelected) {
ISegment selection = Data.MainSelection.Segment;
HandleSelection (selection.Offset, selection.EndOffset, startOffset, endOffset, null, delegate(long start, long end) {
Pango.AttrForeground selectedForeground = new Pango.AttrForeground (Style.Selection.Red,
Style.Selection.Green,
Style.Selection.Blue);
selectedForeground.StartIndex = TranslateToUTF8Index (lineChars, (uint)(start - startOffset), ref curIndex, ref byteIndex);
selectedForeground.EndIndex = TranslateToUTF8Index (lineChars, (uint)(end - startOffset), ref curIndex, ref byteIndex);
result.Add (selectedForeground);
Pango.AttrBackground attrBackground = new Pango.AttrBackground (Style.SelectionBg.Red,
Style.SelectionBg.Green,
Style.SelectionBg.Blue);
attrBackground.StartIndex = selectedForeground.StartIndex;
attrBackground.EndIndex = selectedForeground.EndIndex;
result.Add (attrBackground);
});
}
result.SetAttributes ();
return result;
}
// TODO: GTK+ 3.2 adds a placeholder-text property, but for now
// we have to handle it ourselves
protected override bool OnDrawn(Cairo.Context cr)
{
bool ret = base.OnDrawn (cr);
if(Text.Length > 0 || HasFocus || EmptyMessage == null) {
return ret;
}
Layout.SetMarkup (EmptyMessage);
Gdk.RGBA color;
if (!StyleContext.LookupColor ("placeholder_text_color", out color)) {
color = StyleContext.GetColor (StateFlags.Insensitive);
}
Pango.Attribute attr = new Pango.AttrForeground (Convert.ToUInt16 (color.Red * 65535),
Convert.ToUInt16 (color.Green * 65535), Convert.ToUInt16 (color.Blue * 65535));
Layout.Attributes.Insert (attr);
return ret;
}
