public DeltaHistogram()
{
base.GetItemValue = (di) => di.BytesDelta;
base.GetItemText = (di) => di.Traceback.Frames.Array[di.Traceback.Frames.Offset].Function;
base.GetItemTooltip = (di) => {
var sf = CustomTooltip.GetDefaultStringFormat();
var content = new DeltaInfoTooltipContent(
di, new DeltaInfo.RenderParams {
BackgroundBrush = new SolidBrush(SystemColors.Info),
BackgroundColor = SystemColors.Info,
TextBrush = new SolidBrush(SystemColors.InfoText),
IsExpanded = true,
IsSelected = false,
FunctionHighlightBrush = new SolidBrush(SystemColors.Highlight),
FunctionHighlightTextBrush = new SolidBrush(SystemColors.HighlightText),
FunctionFilter = FunctionFilter,
ShadeBrush = new SolidBrush(Color.FromArgb(31, 0, 0, 0)),
StringFormat = sf
}
);
return(content);
};
}
protected void ShowTooltip(int itemIndex, Point location)
{
if (Tooltip == null)
{
Tooltip = new CustomTooltip(this);
}
var item = Items[itemIndex];
using (var g = CreateGraphics()) {
var content = GetItemTooltip(item);
content.Font = Font;
content.Location = PointToScreen(location);
CustomTooltip.FitContentOnScreen(
g, content,
ref content.Font, ref content.Location, ref content.Size
);
Tooltip.SetContent(content);
}
if (_HoverIndex != itemIndex)
{
var oldIndex = _HoverIndex;
_HoverIndex = itemIndex;
InvalidateItem(oldIndex);
InvalidateItem(_HoverIndex);
}
}
protected IEnumerator <object> FinishShowingTooltip(
Point mouseLocation,
HeapSnapshot.Heap heap,
HeapSnapshot.Allocation allocation,
HeapSnapshot.Traceback rawTraceback
)
{
var uniqueRawFrames = rawTraceback.Frames.AsEnumerable().Distinct();
var fSymbols = Instance.Database.SymbolCache.Select(uniqueRawFrames);
using (fSymbols)
yield return(fSymbols);
var symbolDict = SequenceUtils.ToDictionary(
uniqueRawFrames, fSymbols.Result
);
var tracebackInfo = HeapRecording.ConstructTracebackInfo(
rawTraceback.ID, rawTraceback.Frames, symbolDict
);
var renderParams = new DeltaInfo.RenderParams {
BackgroundBrush = new SolidBrush(SystemColors.Info),
BackgroundColor = SystemColors.Info,
TextBrush = new SolidBrush(SystemColors.InfoText),
IsExpanded = true,
IsSelected = false,
Font = Font,
ShadeBrush = new SolidBrush(Color.FromArgb(31, 0, 0, 0)),
StringFormat = CustomTooltip.GetDefaultStringFormat()
};
var content = new HeapSnapshot.AllocationTooltipContent(
ref allocation, ref tracebackInfo, ref renderParams
)
{
Location = mouseLocation,
Font = Font
};
using (var g = CreateGraphics())
CustomTooltip.FitContentOnScreen(
g, content,
ref content.RenderParams.Font,
ref content.Location, ref content.Size
);
Tooltip.SetContent(content);
}
public GraphHistogram()
{
base.GetItemValue = (sgn) => sgn.BytesRequested;
base.GetItemText = (sgn) => sgn.Key.ToString();
base.GetItemTooltip = (sgn) => {
var sf = CustomTooltip.GetDefaultStringFormat();
TooltipContentBase content = new StackGraphTooltipContent(
sgn, sf
);
return(content);
};
}
protected void ShowTooltip(int itemIndex, Point location)
{
if (Tooltip == null)
{
Tooltip = new CustomTooltip(this);
}
var item = Items[itemIndex];
var sf = CustomTooltip.GetDefaultStringFormat();
using (var g = CreateGraphics()) {
var content = new DeltaInfoTooltipContent(
item, new DeltaInfo.RenderParams {
BackgroundBrush = new SolidBrush(SystemColors.Info),
BackgroundColor = SystemColors.Info,
TextBrush = new SolidBrush(SystemColors.InfoText),
IsExpanded = true,
IsSelected = false,
FunctionHighlightBrush = new SolidBrush(SystemColors.Highlight),
FunctionHighlightTextBrush = new SolidBrush(SystemColors.HighlightText),
FunctionFilter = FunctionFilter,
Font = Font,
ShadeBrush = new SolidBrush(Color.FromArgb(31, 0, 0, 0)),
StringFormat = sf
}
)
{
Location = this.PointToScreen(location)
};
CustomTooltip.FitContentOnScreen(
g, content,
ref content.RenderParams.Font,
ref content.Location, ref content.Size
);
Tooltip.SetContent(content);
}
if (_HoverIndex != itemIndex)
{
var oldIndex = _HoverIndex;
_HoverIndex = itemIndex;
InvalidateItem(oldIndex);
InvalidateItem(_HoverIndex);
}
}
protected void ShowTooltip(LayoutItem item, Point location)
{
if (Tooltip == null)
{
Tooltip = new CustomTooltip(this);
}
using (var g = CreateGraphics()) {
var content = GetItemTooltip(item.Item);
content.Font = Font;
content.Location = PointToScreen(new Point(
(int)item.Rectangle.Left,
(int)item.Rectangle.Bottom + 2
));
CustomTooltip.FitContentOnScreen(
g, content,
ref content.Font, ref content.Location, ref content.Size
);
Tooltip.SetContent(content);
}
if (_HoverItem != item)
{
var oldItem = _HoverItem;
_HoverItem = item;
if (oldItem != null)
{
Invalidate(oldItem.Rectangle);
}
Invalidate(item.Rectangle);
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
HeapSnapshot.Heap heap;
int allocationIndex;
if (AllocationFromPoint(e.Location, out heap, out allocationIndex))
{
if ((heap != TooltipHeap) || (allocationIndex != TooltipAllocationIndex))
{
TooltipAllocationIndex = allocationIndex;
TooltipHeap = heap;
if (Tooltip == null)
{
Tooltip = new CustomTooltip(this);
}
Instance.Scheduler.Start(
FinishShowingTooltip(
PointToScreen(e.Location),
heap, heap.Allocations[allocationIndex],
Snapshot.Tracebacks[heap.Allocations[allocationIndex].TracebackID]
),
TaskExecutionPolicy.RunAsBackgroundTask
);
Invalidate();
}
}
else
{
HideTooltip();
base.OnMouseMove(e);
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
HeapSnapshot.Heap heap;
int allocationIndex;
if (AllocationFromPoint(e.Location, out heap, out allocationIndex)) {
if ((heap != TooltipHeap) || (allocationIndex != TooltipAllocationIndex)) {
TooltipAllocationIndex = allocationIndex;
TooltipHeap = heap;
if (Tooltip == null)
Tooltip = new CustomTooltip(this);
Instance.Scheduler.Start(
FinishShowingTooltip(
PointToScreen(e.Location),
heap, heap.Allocations[allocationIndex],
Snapshot.Tracebacks[heap.Allocations[allocationIndex].TracebackID]
),
TaskExecutionPolicy.RunAsBackgroundTask
);
Invalidate();
}
} else {
HideTooltip();
base.OnMouseMove(e);
}
}
protected override void OnPaint(PaintEventArgs e)
{
bool retrying = false, selectedItemVisible = false;
int minVisibleIndex = int.MaxValue, maxVisibleIndex = -int.MaxValue;
int width = ClientSize.Width - ScrollBar.Width;
float centerX = width / 2.0f;
float max = GraphLog(Maximum);
retryFromHere:
if (_SelectedIndex >= Items.Count)
{
_SelectedIndex = Items.Count - 1;
}
if (_SelectedIndex < 0)
{
_SelectedIndex = 0;
}
if (_ScrollOffset >= Items.Count)
{
_ScrollOffset = Items.Count - 1;
}
if (_ScrollOffset < 0)
{
_ScrollOffset = 0;
}
VisibleItems.Clear();
ItemData data;
HashSet <string> textToFlush = new HashSet <string>(TextCache.Keys);
using (var sf = CustomTooltip.GetDefaultStringFormat())
using (var gridLineFont = new Font(Font.FontFamily, Font.Size * 0.85f, Font.Style))
using (var outlinePen = new Pen(Color.Black))
using (var activeOutlinePen = new Pen(SystemColors.HighlightText))
using (var gridPen = new Pen(Color.FromArgb(96, 0, 0, 0)))
using (var backgroundBrush = new SolidBrush(BackColor))
using (var whiteOutlinePen = new Pen(Color.White, 2.5f))
using (var blackOutlinePen = new Pen(Color.Black, 2.5f))
using (var textBrush = new SolidBrush(ForeColor))
using (var highlightBrush = new SolidBrush(SystemColors.Highlight)) {
blackOutlinePen.LineJoin = whiteOutlinePen.LineJoin = LineJoin.Round;
int marginHeight = 0;
for (int i = Maximum; i >= Math.Min(Maximum, 16); i /= 4)
{
marginHeight = Math.Max(marginHeight,
(int)Math.Ceiling(e.Graphics.MeasureString(
"+" + FormatSize(i), gridLineFont, ClientSize.Height, sf
).Width) + 1
);
}
var rgn = new Rectangle(0, 0, width, marginHeight);
if (rgn.IntersectsWith(e.ClipRectangle))
{
using (var scratch = Scratch.Get(e.Graphics, rgn)) {
var g = scratch.Graphics;
g.Clear(BackColor);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawLine(gridPen, centerX, 0, centerX, marginHeight);
for (int i = Maximum; i >= Math.Min(Maximum, 16); i /= 4)
{
float x = (GraphLog(i) / max) * (width / 2.0f);
var formatted = FormatSize(i);
g.DrawLine(gridPen, centerX + x, 0, centerX + x, marginHeight);
var text = String.Format("+{0}", formatted);
textToFlush.Remove(text);
var bitmap = TextCache.Get(g, text, gridLineFont, RotateFlipType.Rotate90FlipNone, ForeColor, BackColor, sf, new SizeF(marginHeight, 999));
g.DrawImageUnscaled(bitmap, (int)(centerX + x), 0);
g.DrawLine(gridPen, centerX - x, 0, centerX - x, marginHeight);
text = String.Format("-{0}", formatted);
textToFlush.Remove(text);
bitmap = TextCache.Get(g, text, gridLineFont, RotateFlipType.Rotate90FlipNone, ForeColor, BackColor, sf, new SizeF(marginHeight, 999));
g.DrawImageUnscaled(bitmap, (int)(centerX - x - bitmap.Width), 0);
}
}
}
int y = marginHeight;
rgn = new Rectangle(0, y, width, ItemHeight);
if ((TotalDelta.GetValueOrDefault(0) != 0) && rgn.IntersectsWith(e.ClipRectangle))
{
using (var scratch = Scratch.Get(e.Graphics, rgn)) {
var barRectangle = ComputeBarRectangle(
TotalDelta.Value, centerX, rgn.Y, width, max
);
var g = scratch.Graphics;
g.ResetClip();
g.Clear(BackColor);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawLine(gridPen, centerX, rgn.Y, centerX, rgn.Bottom);
g.DrawRectangle(
outlinePen, barRectangle.X, barRectangle.Y, barRectangle.Width, barRectangle.Height
);
var oldRenderingHint = g.TextRenderingHint;
try {
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
g.DrawString("Delta bytes", Font, textBrush, barRectangle.X, barRectangle.Y, sf);
} finally {
g.TextRenderingHint = oldRenderingHint;
}
}
}
if ((TotalDelta.GetValueOrDefault(0) != 0))
{
y += ItemHeight;
}
for (int i = _ScrollOffset; (i < Items.Count) && (y < ClientSize.Height); i++)
{
var selected = (i == SelectedIndex);
var item = Items[i];
GetItemData(i, out data);
rgn = new Rectangle(0, y, width, ItemHeight);
var bytesDelta = GetItemValue(item);
var barRectangle = ComputeBarRectangle(
bytesDelta, centerX, rgn.Y, width, max
);
var itemColor = SelectItemColor(item);
if (rgn.IntersectsWith(e.ClipRectangle))
{
using (var itemBrush = new SolidBrush(itemColor))
using (var scratch = Scratch.Get(e.Graphics, rgn)) {
var g = scratch.Graphics;
g.ResetClip();
g.Clear(BackColor);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawLine(gridPen, centerX, rgn.Y, centerX, rgn.Bottom);
g.FillRectangle(
(_HoverIndex == i) ? highlightBrush : itemBrush,
barRectangle
);
g.DrawRectangle(
(_HoverIndex == i) ? activeOutlinePen : outlinePen,
barRectangle.X - 0.5f, barRectangle.Y - 0.5f,
barRectangle.Width + 1f, barRectangle.Height + 1f
);
string itemText = null;
if ((GetItemText != null) && (itemText = GetItemText(item)) != null)
{
bool white = (itemColor.GetBrightness() <= 0.25f);
textToFlush.Remove(itemText);
var bitmap = TextCache.Get(
g, itemText, Font, RotateFlipType.RotateNoneFlipNone,
white ? Color.White : Color.Black,
white ? Color.Black : Color.LightGray, sf,
new SizeF(barRectangle.Width, barRectangle.Height)
);
g.DrawImageUnscaled(
bitmap,
(int)Math.Floor(barRectangle.X),
(int)Math.Floor(barRectangle.Y)
);
}
}
}
VisibleItems.Add(new VisibleItem {
Rectangle = new Rectangle(
(int)Math.Floor(barRectangle.X),
(int)Math.Floor(barRectangle.Y),
(int)Math.Ceiling(barRectangle.Width),
(int)Math.Ceiling(barRectangle.Height)
),
Index = i
});
y += ItemHeight;
if ((rgn.X >= 0) && (rgn.Right < ClientSize.Width))
{
minVisibleIndex = Math.Min(minVisibleIndex, i);
maxVisibleIndex = Math.Max(maxVisibleIndex, i);
selectedItemVisible |= selected;
}
}
if (y < ClientSize.Height)
{
e.Graphics.FillRectangle(backgroundBrush, new Rectangle(0, y, ClientSize.Width, ClientSize.Height - y));
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
e.Graphics.DrawLine(gridPen, centerX, y, centerX, ClientSize.Height);
}
}
if (!selectedItemVisible && !retrying && ShouldAutoscroll)
{
if (_SelectedIndex > maxVisibleIndex)
{
_ScrollOffset += _SelectedIndex - maxVisibleIndex;
}
else if (_SelectedIndex < minVisibleIndex)
{
_ScrollOffset -= minVisibleIndex - _SelectedIndex;
}
if (_ScrollOffset >= Items.Count)
{
_ScrollOffset = Items.Count - 1;
}
if (_ScrollOffset < 0)
{
_ScrollOffset = 0;
}
retrying = true;
goto retryFromHere;
}
int largeChange = Math.Max(4, ClientSize.Width / ItemHeight);
if (ScrollBar.LargeChange != largeChange)
{
ScrollBar.LargeChange = largeChange;
}
int scrollMax = Math.Max(1, Items.Count - 1) + largeChange - 1;
if (ScrollBar.Maximum != scrollMax)
{
ScrollBar.Maximum = scrollMax;
}
if (ScrollBar.Value != ScrollOffset)
{
ScrollBar.Value = ScrollOffset;
}
TextCache.Flush(textToFlush);
ShouldAutoscroll = false;
base.OnPaint(e);
}
protected override void OnPaint(PaintEventArgs e)
{
bool retrying = false, selectedItemVisible = false;
int minVisibleIndex = int.MaxValue, maxVisibleIndex = -int.MaxValue;
int height = ClientSize.Height - ScrollBar.Height;
float centerY = height / 2.0f;
float max = GraphLog(Maximum);
retryFromHere:
if (_SelectedIndex >= Items.Count)
{
_SelectedIndex = Items.Count - 1;
}
if (_SelectedIndex < 0)
{
_SelectedIndex = 0;
}
if (_ScrollOffset >= Items.Count)
{
_ScrollOffset = Items.Count - 1;
}
if (_ScrollOffset < 0)
{
_ScrollOffset = 0;
}
VisibleItems.Clear();
ItemData data;
using (var sf = CustomTooltip.GetDefaultStringFormat())
using (var gridLineFont = new Font(Font.FontFamily, Font.Size * 0.85f, Font.Style))
using (var outlinePen = new Pen(Color.Black))
using (var activeOutlinePen = new Pen(SystemColors.HighlightText))
using (var gridPen = new Pen(Color.FromArgb(96, 0, 0, 0)))
using (var backgroundBrush = new SolidBrush(BackColor))
using (var textBrush = new SolidBrush(ForeColor))
using (var highlightBrush = new SolidBrush(SystemColors.Highlight)) {
int marginWidth = 0;
for (int i = Maximum; i >= Math.Min(Maximum, 16); i /= 4)
{
marginWidth = Math.Max(marginWidth,
(int)Math.Ceiling(e.Graphics.MeasureString(
"+" + FormatSize(i), gridLineFont, ClientSize.Width, sf
).Width) + 1
);
}
var rgn = new Rectangle(0, 0, marginWidth, height);
if (rgn.IntersectsWith(e.ClipRectangle))
{
using (var scratch = Scratch.Get(e.Graphics, rgn)) {
var g = scratch.Graphics;
g.Clear(BackColor);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawLine(gridPen, 0, centerY, marginWidth, centerY);
for (int i = Maximum; i >= Math.Min(Maximum, 16); i /= 4)
{
float y = (GraphLog(i) / max) * (height / 2.0f);
var formatted = FormatSize(i);
g.DrawLine(gridPen, 0, centerY - y, marginWidth, centerY - y);
var text = String.Format("+{0}", formatted);
g.DrawString(text, gridLineFont, textBrush, new PointF(0, centerY - y));
g.DrawLine(gridPen, 0, centerY + y, marginWidth, centerY + y);
text = String.Format("-{0}", formatted);
var sz = g.MeasureString(text, gridLineFont, marginWidth, sf);
g.DrawString(text, gridLineFont, textBrush, new PointF(0, centerY + y - sz.Height));
}
}
}
int x = marginWidth;
rgn = new Rectangle(x, 0, ItemWidth, height);
if ((TotalDelta.GetValueOrDefault(0) != 0) && rgn.IntersectsWith(e.ClipRectangle))
{
using (var scratch = Scratch.Get(e.Graphics, rgn)) {
var barRectangle = ComputeBarRectangle(
TotalDelta.Value, rgn.X, centerY, height, max
);
var g = scratch.Graphics;
g.ResetClip();
g.Clear(BackColor);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawLine(gridPen, rgn.X, centerY, rgn.Right, centerY);
g.DrawRectangle(
outlinePen, barRectangle.X, barRectangle.Y, barRectangle.Width, barRectangle.Height
);
var oldTransform = g.Transform;
var oldAlignment = sf.LineAlignment;
var oldRenderingHint = g.TextRenderingHint;
try {
g.ResetTransform();
g.RotateTransform(90);
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
sf.LineAlignment = StringAlignment.Far;
g.DrawString("Delta bytes", Font, textBrush, Math.Min(barRectangle.Y, barRectangle.Bottom), 0f, sf);
} finally {
sf.LineAlignment = oldAlignment;
g.Transform = oldTransform;
g.TextRenderingHint = oldRenderingHint;
}
}
}
if ((TotalDelta.GetValueOrDefault(0) != 0))
{
x += ItemWidth;
}
for (int i = _ScrollOffset; (i < Items.Count) && (x < ClientSize.Width); i++)
{
var selected = (i == SelectedIndex);
var item = Items[i];
GetItemData(i, out data);
rgn = new Rectangle(x, 0, ItemWidth, height);
var barRectangle = ComputeBarRectangle(
item.BytesDelta * (item.Added ? 1 : -1),
rgn.X, centerY, height, max
);
if (rgn.IntersectsWith(e.ClipRectangle))
{
using (var itemBrush = new SolidBrush(SelectItemColor(ref item)))
using (var scratch = Scratch.Get(e.Graphics, rgn)) {
var g = scratch.Graphics;
g.ResetClip();
g.Clear(BackColor);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.DrawLine(gridPen, rgn.X, centerY, rgn.Right, centerY);
g.FillRectangle(
(_HoverIndex == i) ? highlightBrush : itemBrush,
barRectangle
);
g.DrawRectangle(
(_HoverIndex == i) ? activeOutlinePen : outlinePen,
barRectangle.X - 0.5f, barRectangle.Y - 0.5f,
barRectangle.Width + 1f, barRectangle.Height + 1f
);
}
}
VisibleItems.Add(new VisibleItem {
Rectangle = new Rectangle(
(int)Math.Floor(barRectangle.X),
(int)Math.Floor(barRectangle.Y),
(int)Math.Ceiling(barRectangle.Width),
(int)Math.Ceiling(barRectangle.Height)
),
Index = i
});
x += ItemWidth;
if ((rgn.X >= 0) && (rgn.Right < ClientSize.Width))
{
minVisibleIndex = Math.Min(minVisibleIndex, i);
maxVisibleIndex = Math.Max(maxVisibleIndex, i);
selectedItemVisible |= selected;
}
}
if (x < ClientSize.Width)
{
e.Graphics.FillRectangle(backgroundBrush, new Rectangle(x, 0, ClientSize.Width - x, ClientSize.Height));
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
e.Graphics.DrawLine(gridPen, x, centerY, ClientSize.Width, centerY);
}
}
if (!selectedItemVisible && !retrying && ShouldAutoscroll)
{
if (_SelectedIndex > maxVisibleIndex)
{
_ScrollOffset += _SelectedIndex - maxVisibleIndex;
}
else if (_SelectedIndex < minVisibleIndex)
{
_ScrollOffset -= minVisibleIndex - _SelectedIndex;
}
if (_ScrollOffset >= Items.Count)
{
_ScrollOffset = Items.Count - 1;
}
if (_ScrollOffset < 0)
{
_ScrollOffset = 0;
}
retrying = true;
goto retryFromHere;
}
int largeChange = Math.Max(4, ClientSize.Width / ItemWidth);
if (ScrollBar.LargeChange != largeChange)
{
ScrollBar.LargeChange = largeChange;
}
int scrollMax = Math.Max(1, Items.Count - 1) + largeChange - 1;
if (ScrollBar.Maximum != scrollMax)
{
ScrollBar.Maximum = scrollMax;
}
if (ScrollBar.Value != ScrollOffset)
{
ScrollBar.Value = ScrollOffset;
}
ShouldAutoscroll = false;
base.OnPaint(e);
}