private BlameLayout(BlameLayout layout, int?topLineNumber = null, Size?renderSize = null, double?lineHeight = null,
double?lineNumberColumnWidth = null, double?codeColumnWidth = null, bool fullRefresh = false)
: this(layout.m_blame, fullRefresh ? GetBlameAuthors(layout.m_blame) : layout.m_authorIndex, layout.m_columnWidths)
{
// copy or replace values from other BlameLayout
TopLineNumber = topLineNumber ?? layout.TopLineNumber;
m_renderSize = renderSize ?? layout.m_renderSize;
LineHeight = lineHeight ?? layout.LineHeight;
m_columnWidths[c_lineNumberColumnIndex] = lineNumberColumnWidth ?? m_columnWidths[c_lineNumberColumnIndex];
m_columnWidths[c_codeColumnIndex] = codeColumnWidth ?? m_columnWidths[c_codeColumnIndex];
m_oldestCommit = fullRefresh ? GetOldestCommit(m_blame) : layout.m_oldestCommit;
m_dateScale = fullRefresh ? GetDateScale(m_blame, m_oldestCommit) : layout.m_dateScale;
// calculate new values
LineCount = (int)Math.Ceiling(m_renderSize.Height / LineHeight);
}
private void Render(DrawingContext drawingContext)
{
drawingContext.DrawRectangle(Brushes.White, null, new Rect(new Point(), RenderSize));
if (m_blame == null || m_emSize == 0)
return;
Typeface typeface = TextElementUtility.GetTypeface(this);
BlameLayout layout = m_layout.WithRenderSize(RenderSize);
foreach (Rect newLineRectangle in layout.NewLines)
drawingContext.DrawRectangle(m_newLineBrush, null, newLineRectangle);
foreach (DisplayBlock block in layout.Blocks)
{
Rect blockRectangle = block.CommitPosition;
drawingContext.DrawRectangle(m_personBrush[block.AuthorIndex], null, block.AuthorPosition);
drawingContext.DrawRectangle(GetOrCreateCommitBrush(block), null, blockRectangle);
drawingContext.DrawLine(new Pen(Brushes.LightGray, 1), new Point(0, blockRectangle.Bottom + 0.5), new Point(RenderSize.Width, blockRectangle.Bottom + 0.5));
FormattedText authorText = CreateSmallFormattedText(block.AuthorName, typeface, block.AuthorWidth);
drawingContext.DrawText(authorText, new Point(block.AuthorX, block.TextY));
FormattedText dateText = CreateSmallFormattedText(block.Date, typeface, block.DateWidth);
dateText.TextAlignment = TextAlignment.Right;
drawingContext.DrawText(dateText, new Point(block.DateX, block.TextY));
if (block.ShowsSummary)
{
Rect summaryPosition = block.SummaryPosition;
FormattedText commitText = CreateSmallFormattedText(block.Summary, typeface, summaryPosition.Width);
commitText.MaxLineCount = Math.Max(1, (int) (summaryPosition.Height / commitText.Height));
commitText.Trimming = TextTrimming.WordEllipsis;
drawingContext.DrawText(commitText, summaryPosition.TopLeft);
}
}
Column lineNumberColumn = layout.LineNumberColumn;
double yOffset = 0;
double lineNumberWidth = lineNumberColumn.Width;
foreach (DisplayLine line in layout.Lines)
{
FormattedText lineNumberText = CreateFormattedText(line.LineNumber.ToString(CultureInfo.InvariantCulture), typeface);
lineNumberText.TextAlignment = TextAlignment.Right;
lineNumberText.SetForegroundBrush(Brushes.DarkCyan);
lineNumberWidth = Math.Max(lineNumberWidth, lineNumberText.Width);
lineNumberText.MaxTextWidth = lineNumberWidth;
drawingContext.DrawText(lineNumberText, new Point(lineNumberColumn.Left, yOffset));
yOffset += layout.LineHeight;
}
layout = layout.WithLineNumberWidth(lineNumberWidth);
Column codeColumn = layout.CodeColumn;
Geometry clipGeometry = new RectangleGeometry(new Rect(codeColumn.Left, 0, RenderSize.Width - codeColumn.Left, RenderSize.Height));
drawingContext.PushClip(clipGeometry);
yOffset = 0;
foreach (DisplayLine line in layout.Lines)
{
double xOffset = layout.CodeColumn.Left - HorizontalOffset;
foreach (LinePart part in line.Parts)
{
FormattedText text = CreateFormattedText(string.Join("", part.Text.Replace("\t", " ")), typeface);
if (!line.IsNew && part.Status == LinePartStatus.New)
drawingContext.DrawRectangle(m_changedTextBrush, null, new Rect(xOffset, yOffset, text.WidthIncludingTrailingWhitespace, layout.LineHeight));
drawingContext.DrawText(text, new Point(xOffset, yOffset));
xOffset += text.WidthIncludingTrailingWhitespace;
}
layout = layout.WithCodeWidth(xOffset - codeColumn.Left + HorizontalOffset);
yOffset += layout.LineHeight;
}
drawingContext.Pop();
double commitRightX = layout.CommitColumn.Right;
drawingContext.DrawLine(new Pen(Brushes.DarkGray, 1), new Point(commitRightX, 0), new Point(commitRightX, Math.Min(yOffset, RenderSize.Height)));
double lineNumberRightX = layout.CodeMarginColumn.Right;
drawingContext.DrawLine(new Pen(Brushes.DarkGray, 1), new Point(lineNumberRightX, 0), new Point(lineNumberRightX, Math.Min(yOffset, RenderSize.Height)));
SetHorizontalScrollInfo(layout.Width, RenderSize.Width, null);
if (layout != m_layout)
{
m_layout = layout;
RedrawSoon();
}
}
private void OnBlameResultPropertyChanged(PropertyChangedEventArgs e)
{
bool fullRefresh = e.PropertyName == null;
m_layout = m_layout.Refresh(fullRefresh);
if (fullRefresh)
{
m_personBrush.Clear();
CreateBrushesForAuthors(m_layout.AuthorCount);
}
RedrawSoon();
}
protected override void OnScrollChanged()
{
m_layout = m_layout.WithTopLineNumber((int) VerticalOffset + 1);
if (RenderSize.Width > 0 && RenderSize.Height > 0)
Render();
}
protected override Size MeasureOverride(Size availableSize)
{
if (m_layout != null)
{
Typeface typeface = TextElementUtility.GetTypeface(this);
m_emSize = Math.Max(TextElement.GetFontSize(this), 10.0 * 4 / 3);
FormattedText text = CreateFormattedText("8888", typeface);
m_layout = m_layout.WithLineHeight(text.Height);
}
return availableSize;
}
protected override Size ArrangeOverride(Size finalSize)
{
if (m_layout != null)
{
m_layout = m_layout.WithRenderSize(finalSize);
SetVerticalScrollInfo(null, finalSize.Height / m_layout.LineHeight, null);
RedrawSoon();
}
return finalSize;
}
internal void SetBlameResult(BlameResult blame, int topLineNumber = 1)
{
if (m_blameSubscription != null)
m_blameSubscription.Dispose();
double oldLineHeight = m_layout == null ? 1.0 : m_layout.LineHeight;
m_blame = blame;
m_layout = new BlameLayout(blame).WithTopLineNumber(1).WithLineHeight(oldLineHeight);
m_lineCount = blame.Blocks.Sum(b => b.LineCount);
m_blameSubscription = Observable.FromEventPattern<PropertyChangedEventArgs>(m_blame, "PropertyChanged").ObserveOnDispatcher().Subscribe(x => OnBlameResultPropertyChanged(x.EventArgs));
m_hoverCommitId = null;
m_selectedCommitId = null;
m_personBrush.Clear();
m_commitBrush.Clear();
m_commitAlpha.Clear();
CreateBrushesForAuthors(m_layout.AuthorCount);
SetVerticalScrollInfo(m_lineCount + 1, null, topLineNumber - 1);
InvalidateMeasure();
OnScrollChanged();
RedrawSoon();
}
internal void ClearBlameResult()
{
m_blame = null;
m_layout = null;
SetHorizontalScrollInfo(1, null, 0);
SetVerticalScrollInfo(1, null, 0);
InvalidateMeasure();
RedrawSoon();
}
private BlameLayout(BlameLayout layout, int? topLineNumber = null, Size? renderSize = null, double? lineHeight = null,
double? lineNumberColumnWidth = null, double? codeColumnWidth = null, bool fullRefresh = false)
: this()
{
// copy values from other BlameLayout
m_blame = layout.m_blame;
m_columnWidths = layout.m_columnWidths;
// copy or replace values from other BlameLayout
m_topLineNumber = topLineNumber ?? layout.m_topLineNumber;
m_renderSize = renderSize ?? layout.m_renderSize;
m_lineHeight = lineHeight ?? layout.m_lineHeight;
m_columnWidths[c_lineNumberColumnIndex] = lineNumberColumnWidth ?? m_columnWidths[c_lineNumberColumnIndex];
m_columnWidths[c_codeColumnIndex] = codeColumnWidth ?? m_columnWidths[c_codeColumnIndex];
m_authorIndex = fullRefresh ? GetBlameAuthors(m_blame) : layout.m_authorIndex;
m_oldestCommit = fullRefresh ? GetOldestCommit(m_blame) : layout.m_oldestCommit;
m_dateScale = fullRefresh ? GetDateScale(m_blame, m_oldestCommit) : layout.m_dateScale;
// calculate new values
m_lineCount = (int) Math.Ceiling(m_renderSize.Height / m_lineHeight);
}
