void SetupStartHitPoint(CssBoxHitChain startChain, ITextService textService)
{
//find global location of start point
HitInfo startHit = startChain.GetLastHit();
//-----------------------------
_startHitRun = null;
_startHitRunCharIndex = 0;
switch (startHit.hitObjectKind)
{
case HitObjectKind.Run:
{
CssRun run = (CssRun)startHit.hitObject;
//-------------------------------------------------------
int sel_index;
int sel_offset;
run.FindSelectionPoint(textService,
startHit.localX,
out sel_index,
out sel_offset);
_startHitRunCharIndex = sel_index;
//modify hitpoint
_startHitHostLine = (CssLineBox)startChain.GetHitInfo(startChain.Count - 2).hitObject;
_startLineBeginSelectionAtPixel = (int)(run.Left + sel_offset);
_startHitRun = run;
}
break;
case HitObjectKind.LineBox:
{
_startHitHostLine = (CssLineBox)startHit.hitObject;
_startLineBeginSelectionAtPixel = startHit.localX;
//make global
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)startHit.hitObject;
//find first nearest line at point
CssLineBox startHitLine = FindNearestLine(box, startChain.RootGlobalY, 5);
_startLineBeginSelectionAtPixel = 0;
if (startHitLine != null)
{
_startHitHostLine = startHitLine;
}
else
{
//if not found?
_startHitHostLine = null;
}
}
break;
default:
{
throw new NotSupportedException();
}
}
}
public HitInfo(CssRun run, int x, int y)
{
this.hitObject = run;
this.hitObjectKind = HitObjectKind.Run;
this.localX = x;
this.localY = y;
}
public HitInfo(CssRun run, int x, int y)
{
this.hitObject = run;
this.hitObjectKind = HitObjectKind.Run;
this.localX = x;
this.localY = y;
}
static void CalculateMinimumWidthAndWidestRun(CssBox box, out float maxWidth, out CssRun maxWidthRun)
{
//use line-base style ***
float maxRunWidth = 0;
CssRun foundRun = null;
if (box._clientLineBoxes != null)
{
var lineNode = box._clientLineBoxes.First;
while (lineNode != null)
{
//------------------------
CssLineBox line = lineNode.Value;
CssRun tmpRun = line.FindMaxWidthRun(maxRunWidth);
if (tmpRun != null)
{
maxRunWidth = tmpRun.Width;
foundRun = tmpRun;
}
//------------------------
lineNode = lineNode.Next;
}
}
maxWidth = maxRunWidth;
maxWidthRun = foundRun;
}
public static void Select(this CssLineBox lineBox, int startAtPx, int endAt,
CssRun startRun, int startRunIndex,
CssRun endRun, int endRunIndex)
{
lineBox.SelectionSegment = new SelectionSegment(startAtPx, endAt - startAtPx)
{
StartHitRun = startRun,
StartHitCharIndex = startRunIndex,
EndHitRun = endRun,
EndHitCharIndex = endRunIndex
};
}
//
internal float CalculateLineHeight()
{
float maxBottom = 0;
List <CssRun> myruns = _runs;
int j = myruns.Count;
for (int i = 0; i < j; ++i)
{
CssRun run = myruns[i];
//maxRight = run.Right > maxRight ? run.Right : maxRight;
maxBottom = run.Bottom > maxBottom ? run.Bottom : maxBottom;
}
return(maxBottom);
}
internal IEnumerable <CssRun> GetRunIter(CssBox box)
{
List <CssRun> tmpRuns = _runs;
int j = tmpRuns.Count;
CssRun run = null;
for (int i = 0; i < j; ++i)
{
if ((run = tmpRuns[i]).OwnerBox == box)
{
yield return(run);
}
}
}
//---------------------------------
internal CssRun FindMaxWidthRun(float minimum)
{
float max = minimum;
CssRun maxRun = null;
for (int i = _runs.Count - 1; i >= 0; --i)
{
CssRun r = _runs[i];
if (r.Width > max)
{
max = r.Width;
maxRun = r;
}
}
return(maxRun);
}
static void ForEachEventListenerBubbleUp(UIEventArgs e, CssBoxHitChain hitChain, EventListenerAction listenerAction)
{
for (int i = hitChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitChain.GetHitInfo(i);
IEventListener controller = null;
switch (hitInfo.hitObjectKind)
{
default:
{
continue;
}
case HitObjectKind.Run:
{
CssRun run = (CssRun)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventListener;
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(box) as IEventListener;
}
break;
}
//---------------------
if (controller != null)
{
//found controller
if (e.SourceHitElement == null)
{
e.SourceHitElement = controller;
}
e.CurrentContextElement = controller;
e.SetLocation(hitInfo.localX, hitInfo.localY);
if (listenerAction())
{
return;
}
}
}
}
public void ApplyBaseline(float baseline)
{
//Important notes on http://www.w3.org/TR/CSS21/tables.html#height-layout
//iterate from rectstrip
//In a single LineBox , CssBox:RectStrip => 1:1 relation
for (int i = _runs.Count - 1; i >= 0; --i)
{
CssRun run = _runs[i];
//adjust base line
run.SetLocation(run.Left, baseline);
}
//if (_bottomUpBoxStrips == null)
//{
// return;
//}
//for (int i = _bottomUpBoxStrips.Length - 1; i >= 0; --i)
//{
// var rstrip = _bottomUpBoxStrips[i];
// var rstripOwnerBox = rstrip.owner;
// switch (rstripOwnerBox.VerticalAlign)
// {
// case Css.CssVerticalAlign.Sub:
// {
// this.SetBaseLine(rstripOwnerBox, baseline + rstrip.Height * .2f);
// } break;
// case Css.CssVerticalAlign.Super:
// {
// this.SetBaseLine(rstripOwnerBox, baseline - rstrip.Height * .2f);
// } break;
// case Css.CssVerticalAlign.TextTop:
// case Css.CssVerticalAlign.TextBottom:
// case Css.CssVerticalAlign.Top:
// case Css.CssVerticalAlign.Bottom:
// case Css.CssVerticalAlign.Middle:
// break;
// default:
// //case: baseline
// this.SetBaseLine(rstripOwnerBox, baseline);
// break;
// }
//}
}
/// <summary>
/// Lets the linebox add the word an its box to their lists if necessary.
/// </summary>
/// <param name="run"></param>
internal void AddRun(CssRun run)
{
#if DEBUG
if (this.dbugIsClosed)
{
throw new NotSupportedException();
}
#endif
//if (run is CssTextRun)
//{
// CssTextRun textRun = (CssTextRun)run;
// if (textRun.Text.Contains("Cell"))
// {
// }
//}
_runs.Add(run);//each word has only one owner linebox!
CssRun.SetHostLine(run, this);
}
//
internal void ClearSelection()
{
if (_selectedLines != null)
{
for (int i = _selectedLines.Count - 1; i >= 0; --i)
{
_selectedLines[i].SelectionSegment = null;
}
_selectedLines.Clear();
}
else
{
if (_startHitHostLine != null)
{
_startHitHostLine.SelectionSegment = null;
}
}
_startHitRun = _endHitRun = null;
_startHitRunCharIndex = _endHitRunCharIndex = 0;
}
public void ClearSelection()
{
if (this.selectedLines != null)
{
for (int i = selectedLines.Count - 1; i >= 0; --i)
{
this.selectedLines[i].SelectionSegment = null;
}
this.selectedLines.Clear();
}
else
{
if (this.startHitHostLine != null)
{
this.startHitHostLine.SelectionSegment = null;
}
}
this.startHitRun = this.endHitRun = null;
this.startHitRunCharIndex = this.endHitRunCharIndex = 0;
}
public void ClearSelection()
{
if (this.selectedLines != null)
{
for (int i = selectedLines.Count - 1; i >= 0; --i)
{
this.selectedLines[i].SelectionSegment = null;
}
this.selectedLines.Clear();
}
else
{
if (this.startHitHostLine != null)
{
this.startHitHostLine.SelectionSegment = null;
}
}
this.startHitRun = this.endHitRun = null;
this.startHitRunCharIndex = this.endHitRunCharIndex = 0;
}
static void ForEachOnlyEventPortalBubbleUp(UIEventArgs e, CssBoxHitChain hitPointChain, EventPortalAction eventPortalAction)
{
//only listener that need tunnel down
for (int i = hitPointChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitPointChain.GetHitInfo(i);
IEventPortal controller = null;
switch (hitInfo.hitObjectKind)
{
default:
{
continue;
}
case HitObjectKind.Run:
{
CssRun run = (CssRun)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventPortal;
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)hitInfo.hitObject;
controller = CssBox.UnsafeGetController(box) as IEventPortal;
}
break;
}
//---------------------
if (controller != null)
{
e.SetLocation(hitInfo.localX, hitInfo.localY);
if (eventPortalAction(controller))
{
return;
}
}
}
}
/// <summary>
/// Gets the minimum width that the box can be.
/// *** The box can be as thin as the longest word plus padding
/// </summary>
/// <returns></returns>
internal float CalculateMinimumWidth(int calculationEpisode)
{
float maxWidth = 0;
float padding = 0f;
if (this._lastCalculationEpisodeNum == calculationEpisode)
{
return(_cachedMinimumWidth);
}
//---------------------------------------------------
if (this.LineBoxCount > 0)
{
//use line box technique ***
CssRun maxWidthRun = null;
CalculateMinimumWidthAndWidestRun(this, out maxWidth, out maxWidthRun);
//--------------------------------
if (maxWidthRun != null)
{
//bubble up***
var box = maxWidthRun.OwnerBox;
while (box != null)
{
padding += (box.ActualBorderRightWidth + box.ActualPaddingRight) +
(box.ActualBorderLeftWidth + box.ActualPaddingLeft);
if (box == this)
{
break;
}
else
{
//bubble up***
box = box.ParentBox;
}
}
}
}
this._lastCalculationEpisodeNum = calculationEpisode;
return(_cachedMinimumWidth = maxWidth + padding);
}
public float CalculateTotalBoxBaseLine(LayoutVisitor lay)
{
//not correct !!
float maxRunHeight = 0;
CssRun maxRun = null;
for (int i = _runs.Count - 1; i >= 0; --i)
{
CssRun run = _runs[i];
if (run.Height > maxRunHeight)
{
maxRun = run;
maxRunHeight = run.Height;
}
}
if (maxRun != null)
{
//lay.GraphicsPlatform.SampleIFonts
//var f = maxRun.OwnerBox.ResolvedFont;
//PixelFarm.Drawing.Fonts.ActualFont ff = f.ActualFont;
//return (float)(f.Height * ff.AscentInPixels / f.Height);
//return fontHeight* fontAscent / lineSpacing )
}
return(0);
//int j = _runs.Count;
//for (int i = _runs.Count - 1; i >= 0; --i)
//{
// Font ownerFont = _runs[i].OwnerBox.ActualFont;
// HtmlRenderer.Drawing.FontsUtils.GetDescent(
//}
//return 0;
//float baseline = Single.MinValue;
//for (int i = _bottomUpBoxStrips.Count - 1; i >= 0; --i)
//{
// baseline = Math.Max(baseline, _bottomUpBoxStrips[i].Top);//?top
//}
//return baseline;
}
public float CalculateTotalBoxBaseLine(LayoutVisitor lay)
{
//not correct !!
float maxRunHeight = 0;
CssRun maxRun = null;
for (int i = this._runs.Count - 1; i >= 0; --i)
{
var run = this._runs[i];
if (run.Height > maxRunHeight)
{
maxRun = run;
maxRunHeight = run.Height;
}
}
if (maxRun != null)
{
var fontInfo = maxRun.OwnerBox.ActualFont.FontInfo;
return(fontInfo.BaseLine);
}
return(0);
//int j = this._runs.Count;
//for (int i = this._runs.Count - 1; i >= 0; --i)
//{
// Font ownerFont = _runs[i].OwnerBox.ActualFont;
// HtmlRenderer.Drawing.FontsUtils.GetDescent(
//}
//return 0;
//float baseline = Single.MinValue;
//for (int i = _bottomUpBoxStrips.Count - 1; i >= 0; --i)
//{
// baseline = Math.Max(baseline, _bottomUpBoxStrips[i].Top);//?top
//}
//return baseline;
}
internal void CloseLine(LayoutVisitor lay)
{
#if DEBUG
this.dbugIsClosed = true;
#endif
//=============================================================
//part 1: MakeStrips()
//=============================================================
//***
List <CssRun> myruns = _runs;
CssBox lineOwner = _ownerBox;
List <PartialBoxStrip> tmpStrips = lay.GetReadyStripList();
//---------------------------------------------------------------------------
//first level
Dictionary <CssBox, PartialBoxStrip> unqiueStrips = lay.GetReadyStripDic();
//location of run and strip related to its containng block
float maxRight = 0;
float maxBottom = 0;
int j = myruns.Count;
float firstRunStartAt = 0;
for (int i = 0; i < j; ++i)
{
CssRun run = myruns[i];
if (i == 0)
{
firstRunStartAt = run.Left;
}
maxRight = run.Right > maxRight ? run.Right : maxRight;
maxBottom = run.Bottom > maxBottom ? run.Bottom : maxBottom;
if (run.IsSpaces)
{
//strip size include whitespace ?
continue;
}
//-------------
//first level data
RegisterStripPart(run.OwnerBox, run.Left, run.Top, run.Right, run.Bottom, tmpStrips, unqiueStrips);
}
//---------------------------------------------------------------------------
//other step to upper layer, until no new strip
int newStripIndex = 0;
for (int numNewStripCreate = tmpStrips.Count; numNewStripCreate > 0; newStripIndex += numNewStripCreate)
{
numNewStripCreate = StepUpRegisterStrips(unqiueStrips, lineOwner, tmpStrips, newStripIndex);
}
_bottomUpBoxStrips = tmpStrips.ToArray();
lay.ReleaseStripList(tmpStrips);
lay.ReleaseStripDic(unqiueStrips);
//=============================================================
//part 2: Calculate
//=============================================================
this.CacheLineHeight = maxBottom;
this.CachedLineContentWidth = maxRight;
this.CachedExactContentWidth = (maxRight - firstRunStartAt);
if (lineOwner.VisualWidth < CachedLineContentWidth)
{
this.CachedLineContentWidth = this.OwnerBox.VisualWidth;
}
}
public static void SelectPartialToEnd(this CssLineBox lineBox, int startAtPx, CssRun startRun, int startRunIndex)
{
//from startAt to end of line
//lineBox.SelectionStartAt = startAtPx;
//lineBox.SelectionWidth = (int)lineBox.CachedLineContentWidth - startAtPx;
lineBox.SelectionSegment = new SelectionSegment(startAtPx, (int)lineBox.CachedLineContentWidth - startAtPx)
{
StartHitRun = startRun,
StartHitCharIndex = startRunIndex
};
}
public static void SelectPartialFromStart(this CssLineBox lineBox, int endAtPx, CssRun endRun, int endRunIndex)
{
//from start of line to endAt
//lineBox.SelectionStartAt = 0;
//lineBox.SelectionWidth = endAtPx;
lineBox.SelectionSegment = new SelectionSegment(0, endAtPx)
{
EndHitRun = endRun,
EndHitCharIndex = endRunIndex
};
}
static void CalculateMinimumWidthAndWidestRun(CssBox box, out float maxWidth, out CssRun maxWidthRun)
{
//use line-base style ***
float maxRunWidth = 0;
CssRun foundRun = null;
if (box._clientLineBoxes != null)
{
var lineNode = box._clientLineBoxes.First;
while (lineNode != null)
{
//------------------------
var line = lineNode.Value;
var tmpRun = line.FindMaxWidthRun(maxRunWidth);
if (tmpRun != null)
{
maxRunWidth = tmpRun.Width;
foundRun = tmpRun;
}
//------------------------
lineNode = lineNode.Next;
}
}
maxWidth = maxRunWidth;
maxWidthRun = foundRun;
}
internal void AddHit(CssRun run, int x, int y)
{
//position x,y relate with (0,0) of its run
_hitInfoList.Add(new HitInfo(run, x, y));
}
internal void PaintRuns(PaintVisitor p)
{
List <CssRun> tmpRuns = _runs;
int j = tmpRuns.Count;
if (j < 1)
{
return;
}
//-----------------------
//iterate from each words
CssBox latestOwner = null;
DrawBoard innerCanvas = p.InnerDrawBoard;
RequestFont enterFont = innerCanvas.CurrentFont;
Color enterColor = innerCanvas.CurrentTextColor;
for (int i = 0; i < j; ++i)
{
//-----------------
#if DEBUG
dbugCounter.dbugRunPaintCount++;
#endif
//-----------------
CssRun w = tmpRuns[i];
switch (w.Kind)
{
case CssRunKind.SolidContent:
{
w.OwnerBox.Paint(p, new RectangleF(w.Left, w.Top, w.Width, w.Height));
}
break;
case CssRunKind.BlockRun:
{
//Console.WriteLine("blockrun");
CssBlockRun blockRun = (CssBlockRun)w;
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
//p.SetCanvasOrigin(ox + (int)(blockRun.Left + blockRun.ContentBox.LocalX), oy + (int)blockRun.Top);
p.SetCanvasOrigin(ox + (int)(blockRun.Left), oy + (int)blockRun.Top);
blockRun.ContentBox.Paint(p);
p.SetCanvasOrigin(ox, oy);
}
break;
case CssRunKind.Text:
{
if (latestOwner != w.OwnerBox)
{
//change
latestOwner = w.OwnerBox;
//change font when change owner
p.InnerDrawBoard.CurrentFont = latestOwner.ResolvedFont;
p.InnerDrawBoard.CurrentTextColor = latestOwner.ActualColor;
}
CssTextRun textRun = (CssTextRun)w;
p.DrawText(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
textRun.TextStartIndex,
textRun.TextLength,
new PointF(w.Left, w.Top),
new SizeF(w.Width, w.Height));
}
break;
default:
{
#if DEBUG
// w.OwnerBox.dbugPaintTextWordArea(g, offset, w);
#endif
}
break;
}
}
innerCanvas.CurrentFont = enterFont;
innerCanvas.CurrentTextColor = enterColor;
}
void SetupStartHitPoint(CssBoxHitChain startChain, IFonts ifonts)
{
//find global location of start point
HitInfo startHit = startChain.GetLastHit();
//-----------------------------
this.startHitRun = null;
this.startHitRunCharIndex = 0;
switch (startHit.hitObjectKind)
{
case HitObjectKind.Run:
{
CssRun run = (CssRun)startHit.hitObject;
//-------------------------------------------------------
int sel_index;
int sel_offset;
run.FindSelectionPoint(ifonts,
startHit.localX,
out sel_index,
out sel_offset);
this.startHitRunCharIndex = sel_index;
//modify hitpoint
this.startHitHostLine = (CssLineBox)startChain.GetHitInfo(startChain.Count - 2).hitObject;
this.startLineBeginSelectionAtPixel = (int)(run.Left + sel_offset);
this.startHitRun = run;
}
break;
case HitObjectKind.LineBox:
{
this.startHitHostLine = (CssLineBox)startHit.hitObject;
this.startLineBeginSelectionAtPixel = startHit.localX;
//make global
}
break;
case HitObjectKind.CssBox:
{
CssBox box = (CssBox)startHit.hitObject;
//find first nearest line at point
CssLineBox startHitLine = FindNearestLine(box, startChain.RootGlobalY, 5);
this.startLineBeginSelectionAtPixel = 0;
if (startHitLine != null)
{
this.startHitHostLine = startHitLine;
}
else
{
//if not found?
this.startHitHostLine = null;
}
}
break;
default:
{
throw new NotSupportedException();
}
}
}
public static void SelectPartialFromStart(this CssLineBox lineBox, int endAtPx, CssRun endRun, int endRunIndex)
{
//from start of line to endAt
lineBox.SelectionSegment = new SelectionSegment(0, endAtPx)
{
EndHitRun = endRun,
EndHitCharIndex = endRunIndex
};
}
public static void SelectPartialToEnd(this CssLineBox lineBox, int startAtPx, CssRun startRun, int startRunIndex)
{
//from startAt to end of line
lineBox.SelectionSegment = new SelectionSegment(startAtPx, (int)lineBox.CachedLineContentWidth - startAtPx)
{
StartHitRun = startRun,
StartHitCharIndex = startRunIndex
};
}
internal static void SetHostLine(CssRun run, CssLineBox hostline)
{
run._hostline = hostline;
}
internal void AddHit(CssRun run, int x, int y)
{
//position x,y relate with (0,0) of its run
hitInfoList.Add(new HitInfo(run, x, y));
}
/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g"></param>
public virtual void MeasureRunsSize(LayoutVisitor lay)
{
//measure once !
if ((_boxCompactFlags & BoxFlags.LAY_RUNSIZE_MEASURE) != 0)
{
return;
}
//--------------------------------
if (this.BackgroundImageBinder != null)
{
//this has background
if (this.BackgroundImageBinder.State == BinderState.Unload)
{
lay.RequestImage(this.BackgroundImageBinder, this);
}
}
//--------------------------------
if (this.RunCount > 0)
{
//find word spacing
float actualWordspacing = _actualWordSpacing;
RequestFont actualFont = this.ResolvedFont;
float fontHeight = (actualFont.AscentInPixels - actualFont.DescentInPixels + actualFont.LineGapInPixels);
fontHeight += 4; //TODO: why +4 ????***
List <CssRun> tmpRuns = this.Runs;
for (int i = tmpRuns.Count - 1; i >= 0; --i)
{
CssRun run = tmpRuns[i];
run.Height = fontHeight;
//if this is newline then width =0 ***
switch (run.Kind)
{
case CssRunKind.Text:
{
CssTextRun textRun = (CssTextRun)run;
Size ss = lay.MeasureStringSize(CssBox.UnsafeGetTextBuffer(this),
textRun.TextStartIndex,
textRun.TextLength,
actualFont);
run.SetSize(ss.Width, ss.Height);
}
break;
case CssRunKind.SingleSpace:
{
run.Width = actualWordspacing;
}
break;
case CssRunKind.Space:
{
//other space size
run.Width = actualWordspacing * ((CssTextRun)run).TextLength;
}
break;
case CssRunKind.LineBreak:
{
run.Width = 0;
}
break;
}
}
}
_boxCompactFlags |= BoxFlags.LAY_RUNSIZE_MEASURE;
}
internal void PaintRuns(PaintVisitor p)
{
List <CssRun> tmpRuns = _runs;
int j = tmpRuns.Count;
if (j < 1)
{
return;
}
//-----------------------
//iterate from each words
CssBox latestOwner = null;
DrawBoard innerCanvas = p.InnerDrawBoard;
RequestFont enterFont = innerCanvas.CurrentFont;
Color enterColor = innerCanvas.CurrentTextColor;
for (int i = 0; i < j; ++i)
{
//-----------------
#if DEBUG
dbugCounter.dbugRunPaintCount++;
#endif
//-----------------
CssRun w = tmpRuns[i];
switch (w.Kind)
{
case CssRunKind.SolidContent:
{
#if DEBUG
//System.Diagnostics.Debug.WriteLine("ox,oy=" + p.CanvasOriginX + "," + p.CanvasOriginY);
//System.Diagnostics.Debug.WriteLine("clip=" + p.CurrentClipRect);
#endif
Rectangle currentClipRect = p.CurrentClipRect;
Rectangle wRect = new Rectangle((int)w.Left, (int)w.Top, (int)w.Width, (int)w.Height);
wRect.Intersect(currentClipRect);
#if DEBUG
//System.Diagnostics.Debug.WriteLine("empty_clip=" + (wRect.Height == 0 || wRect.Width == 0));
#endif
if (wRect.Height != 0 && wRect.Width != 0)
{
w.OwnerBox.Paint(p, new RectangleF(w.Left, w.Top, w.Width, w.Height));
}
}
break;
case CssRunKind.BlockRun:
{
//Console.WriteLine("blockrun");
CssBlockRun blockRun = (CssBlockRun)w;
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
//p.SetCanvasOrigin(ox + (int)(blockRun.Left + blockRun.ContentBox.LocalX), oy + (int)blockRun.Top);
p.SetCanvasOrigin(ox + (int)(blockRun.Left), oy + (int)blockRun.Top);
blockRun.ContentBox.Paint(p);
p.SetCanvasOrigin(ox, oy);
}
break;
case CssRunKind.Text:
{
if (latestOwner != w.OwnerBox)
{
//change
latestOwner = w.OwnerBox;
//change font when change owner
p.InnerDrawBoard.CurrentFont = latestOwner.ResolvedFont;
p.InnerDrawBoard.CurrentTextColor = latestOwner.ActualColor;
}
CssTextRun textRun = (CssTextRun)w;
p.DrawText(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
textRun.TextStartIndex,
textRun.TextLength,
new PointF(w.Left, w.Top),
new SizeF(w.Width, w.Height));
//RenderVxFormattedString formattedStr = CssTextRun.GetCachedFormatString(textRun);
//if (formattedStr == null)
//{
// formattedStr = p.CreateRenderVx(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
// textRun.TextStartIndex,
// textRun.TextLength);
// CssTextRun.SetCachedFormattedString(textRun, formattedStr);
//}
//if (formattedStr != null)
//{
// p.DrawText(formattedStr,
// new PointF(w.Left, w.Top),
// new SizeF(w.Width, w.Height));
//}
//else
//{
// p.DrawText(CssBox.UnsafeGetTextBuffer(w.OwnerBox),
// textRun.TextStartIndex,
// textRun.TextLength,
// new PointF(w.Left, w.Top),
// new SizeF(w.Width, w.Height));
//}
}
break;
default:
{
#if DEBUG
// w.OwnerBox.dbugPaintTextWordArea(g, offset, w);
#endif
}
break;
}
}
innerCanvas.CurrentFont = enterFont;
innerCanvas.CurrentTextColor = enterColor;
}
public void CopyText(StringBuilder stbuilder)
{
//copy selected text to stbuilder
//this version just copy a plain text
int j = selectedLines.Count;
for (int i = 0; i < j; ++i)
{
var selLine = selectedLines[i];
var selSeg = selLine.SelectionSegment;
switch (selSeg.Kind)
{
case SelectionSegmentKind.Partial:
{
var startRun = selSeg.StartHitRun;
var endHitRun = selSeg.EndHitRun;
bool autoFirstRun = false;
bool autoLastRun = false;
if (startRun == null)
{
startRun = selLine.GetFirstRun();
autoFirstRun = true;
}
if (endHitRun == null)
{
endHitRun = selLine.GetLastRun();
autoLastRun = true;
}
if (startRun == endHitRun)
{
var rr = startRun as CssTextRun;
if (rr != null && this.startHitRunCharIndex >= 0)
{
var alltext = rr.Text;
var sub1 = alltext.Substring(this.startHitRunCharIndex, this.endHitRunCharIndex - this.startHitRunCharIndex);
stbuilder.Append(sub1);
}
}
else
{
int runCount = selLine.RunCount;
for (int n = 0; n < runCount; ++n)
{
//temp fix here!
//TODO: review this for other cssrun type
var rr = selLine.GetRun(n) as CssTextRun;
if (rr == null)
{
continue;
}
if (rr == startRun)
{
var alltext = rr.Text;
if (autoFirstRun)
{
stbuilder.Append(alltext);
}
else
{
if (this.startHitRunCharIndex >= 0)
{
var sub1 = alltext.Substring(this.startHitRunCharIndex);
stbuilder.Append(sub1);
}
}
}
else if (rr == endHitRun)
{
var alltext = rr.Text;
if (autoLastRun)
{
stbuilder.Append(alltext);
}
else
{
if (this.endHitRunCharIndex >= 0)
{
var sub1 = alltext.Substring(0, this.endHitRunCharIndex);
stbuilder.Append(sub1);
}
}
//stop
break;
}
else
{
stbuilder.Append(rr.Text);
}
}
}
}
break;
default:
{
int runCount = selLine.RunCount;
for (int n = 0; n < runCount; ++n)
{
var r = selLine.GetRun(n) as CssTextRun;
if (r != null)
{
stbuilder.Append(r.Text);
}
}
}
break;
}
if (i < j - 1)
{
//if not lastline
stbuilder.AppendLine();
}
}
}
void SetupEndHitPoint(CssBoxHitChain startChain, CssBoxHitChain endChain, IFonts ifonts)
{
//find global location of end point
HitInfo endHit = endChain.GetLastHit();
int xposOnEndLine = 0;
CssLineBox endline = null;
int run_sel_offset = 0;
//find endline first
this.endHitRunCharIndex = 0;
this.endHitRun = null;
switch (endHit.hitObjectKind)
{
default:
{
throw new NotSupportedException();
}
case HitObjectKind.Run:
{
CssRun endRun = (CssRun)endHit.hitObject;
//if (endRun.Text != null && endRun.Text.Contains("Jose"))
//{
//}
int run_sel_index;
endRun.FindSelectionPoint(ifonts,
endHit.localX,
out run_sel_index,
out run_sel_offset);
endline = endRun.HostLine;
xposOnEndLine = (int)(endRun.Left + run_sel_offset);
this.endHitRunCharIndex = run_sel_index;
this.endHitRun = endRun;
}
break;
case HitObjectKind.LineBox:
{
endline = (CssLineBox)endHit.hitObject;
xposOnEndLine = endHit.localX;
}
break;
case HitObjectKind.CssBox:
{
CssBox hitBox = (CssBox)endHit.hitObject;
endline = FindNearestLine(hitBox, endChain.RootGlobalY, 5);
xposOnEndLine = endHit.localX;
}
break;
}
#if DEBUG
if (xposOnEndLine == 0)
{
}
#endif
//----------------------------------
this.selectedLines = new List<CssLineBox>();
if (startHitHostLine == endline)
{
this.selectedLines.Add(endline);
startHitHostLine.Select(startLineBeginSelectionAtPixel, xposOnEndLine,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
return; //early exit here ***
}
//----------------------------------
//select on different line
LineWalkVisitor lineWalkVisitor = null;
int breakAtLevel;
if (FindCommonGround(startChain, endChain, out breakAtLevel) && breakAtLevel > 0)
{
var hit1 = endChain.GetHitInfo(breakAtLevel).hitObject;
var hitBlockRun = hit1 as CssBlockRun;
//multiple select
//1. first part
if (hitBlockRun != null)
{
startHitHostLine.Select(startLineBeginSelectionAtPixel, (int)hitBlockRun.Left,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(hitBlockRun);
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
lineWalkVisitor.SetWalkTargetPosition(endChain.RootGlobalX, endChain.RootGlobalY);
lineWalkVisitor.Walk(endline, (lineCoverage, linebox, partialLineRun) =>
{
switch (lineCoverage)
{
case LineCoverage.EndLine:
{
//found end line
linebox.SelectPartialFromStart(xposOnEndLine, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.PartialLine:
{
linebox.SelectPartialFromStart((int)partialLineRun.Right, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.FullLine:
{
//check if hitpoint is in the line area
linebox.SelectFull();
selectedLines.Add(linebox);
}
break;
}
});
}
public void CopyText(StringBuilder stbuilder)
{
//copy selected text to stbuilder
//this version just copy a plain text
int j = selectedLines.Count;
for (int i = 0; i < j; ++i)
{
var selLine = selectedLines[i];
var selSeg = selLine.SelectionSegment;
switch (selSeg.Kind)
{
case SelectionSegmentKind.Partial:
{
var startRun = selSeg.StartHitRun;
var endHitRun = selSeg.EndHitRun;
bool autoFirstRun = false;
bool autoLastRun = false;
if (startRun == null)
{
startRun = selLine.GetFirstRun();
autoFirstRun = true;
}
if (endHitRun == null)
{
endHitRun = selLine.GetLastRun();
autoLastRun = true;
}
if (startRun == endHitRun)
{
var rr = startRun as CssTextRun;
if (this.startHitRunCharIndex >= 0)
{
var alltext = rr.Text;
var sub1 = alltext.Substring(this.startHitRunCharIndex, this.endHitRunCharIndex - this.startHitRunCharIndex);
stbuilder.Append(sub1);
}
}
else
{
int runCount = selLine.RunCount;
for (int n = 0; n < runCount; ++n)
{
//temp fix here!
//TODO: review this for other cssrun type
var rr = selLine.GetRun(n) as CssTextRun;
if (rr == null)
{
continue;
}
if (rr == startRun)
{
var alltext = rr.Text;
if (autoFirstRun)
{
stbuilder.Append(alltext);
}
else
{
if (this.startHitRunCharIndex >= 0)
{
var sub1 = alltext.Substring(this.startHitRunCharIndex);
stbuilder.Append(sub1);
}
}
}
else if (rr == endHitRun)
{
var alltext = rr.Text;
if (autoLastRun)
{
stbuilder.Append(alltext);
}
else
{
if (this.endHitRunCharIndex >= 0)
{
var sub1 = alltext.Substring(0, this.endHitRunCharIndex);
stbuilder.Append(sub1);
}
}
//stop
break;
}
else
{
stbuilder.Append(rr.Text);
}
}
}
}
break;
default:
{
int runCount = selLine.RunCount;
for (int n = 0; n < runCount; ++n)
{
var r = selLine.GetRun(n) as CssTextRun;
if (r != null)
{
stbuilder.Append(r.Text);
}
}
}
break;
}
if (i < j - 1)
{
//if not lastline
stbuilder.AppendLine();
}
}
}
/// <summary>
/// Lets the linebox add the word an its box to their lists if necessary.
/// </summary>
/// <param name="run"></param>
internal void AddRun(CssRun run)
{
#if DEBUG
if (this.dbugIsClosed)
{
throw new NotSupportedException();
}
#endif
//if (run is CssTextRun)
//{
// CssTextRun textRun = (CssTextRun)run;
// if (textRun.Text.Contains("Cell"))
// {
// }
//}
this._runs.Add(run);//each word has only one owner linebox!
CssRun.SetHostLine(run, this);
}
internal void CopyText(StringBuilder stbuilder)
{
//copy selected text to stbuilder
//this version just copy a plain text
int j = _selectedLines.Count;
for (int i = 0; i < j; ++i)
{
CssLineBox selLine = _selectedLines[i];
SelectionSegment selSeg = selLine.SelectionSegment;
switch (selSeg.Kind)
{
case SelectionSegmentKind.Partial:
{
CssRun startRun = selSeg.StartHitRun;
CssRun endHitRun = selSeg.EndHitRun;
bool autoFirstRun = false;
bool autoLastRun = false;
if (startRun == null)
{
startRun = selLine.GetFirstRun();
autoFirstRun = true;
}
if (endHitRun == null)
{
endHitRun = selLine.GetLastRun();
autoLastRun = true;
}
if (startRun == endHitRun)
{
if (startRun != null && _startHitRunCharIndex >= 0)
{
startRun.WriteContent(stbuilder, _startHitRunCharIndex, _endHitRunCharIndex - _startHitRunCharIndex);
//string alltext = rr.Text;
//string sub1 = alltext.Substring(_startHitRunCharIndex, _endHitRunCharIndex - _startHitRunCharIndex);
//stbuilder.Append(sub1);
}
}
else
{
int runCount = selLine.RunCount;
bool foundStartRun = false;
for (int n = 0; n < runCount; ++n)
{
//temp fix here!
//TODO: review this for other cssrun type
CssRun run = selLine.GetRun(n);
if (run == startRun)
{
foundStartRun = true;
if (autoFirstRun)
{
run.WriteContent(stbuilder);
}
else
{
if (_startHitRunCharIndex >= 0)
{
run.WriteContent(stbuilder, _startHitRunCharIndex);
}
}
}
else if (run == endHitRun)
{
if (autoLastRun)
{
run.WriteContent(stbuilder);
//stbuilder.Append(alltext);
}
else
{
if (_endHitRunCharIndex >= 0)
{
run.WriteContent(stbuilder, 0, _endHitRunCharIndex);
//string sub1 = alltext.Substring(0, _endHitRunCharIndex);
//stbuilder.Append(sub1);
}
}
//stop
break;
}
else
{
if (foundStartRun)
{
run.WriteContent(stbuilder);
//stbuilder.Append(rr.Text);
}
}
}
}
}
break;
default:
{
int runCount = selLine.RunCount;
for (int n = 0; n < runCount; ++n)
{
CssRun run = selLine.GetRun(n);
run.WriteContent(stbuilder);
//CssTextRun r = run as CssTextRun;
//if (r != null)
//{
// stbuilder.Append(r.Text);
//}
//else
//{
//}
}
}
break;
}
if (i < j - 1)
{
//if not lastline
stbuilder.AppendLine();
}
}
}
internal static void SetHostLine(CssRun run, CssLineBox hostline)
{
run._hostline = hostline;
}
public static void Select(this CssLineBox lineBox, int startAtPx, int endAt,
CssRun startRun, int startRunIndex,
CssRun endRun, int endRunIndex)
{
lineBox.SelectionSegment = new SelectionSegment(startAtPx, endAt - startAtPx)
{
StartHitRun = startRun,
StartHitCharIndex = startRunIndex,
EndHitRun = endRun,
EndHitCharIndex = endRunIndex
};
}
/// <summary>
/// Assigns words its width and height
/// </summary>
/// <param name="g"></param>
public virtual void MeasureRunsSize(LayoutVisitor lay)
{
//measure once !
if ((this._boxCompactFlags & BoxFlags.LAY_RUNSIZE_MEASURE) != 0)
{
return;
}
//--------------------------------
if (this.BackgroundImageBinder != null)
{
//this has background
if (this.BackgroundImageBinder.State == ImageBinderState.Unload)
{
lay.RequestImage(this.BackgroundImageBinder, this);
}
}
//--------------------------------
if (this.RunCount > 0)
{
//find word spacing
float actualWordspacing = this._actualWordSpacing;
Font actualFont = this.ActualFont;
var fontInfo = actualFont.FontInfo;
float fontHeight = fontInfo.LineHeight;
var tmpRuns = this.Runs;
for (int i = tmpRuns.Count - 1; i >= 0; --i)
{
CssRun run = tmpRuns[i];
run.Height = fontHeight;
//if this is newline then width =0 ***
switch (run.Kind)
{
case CssRunKind.Text:
{
CssTextRun textRun = (CssTextRun)run;
run.Width = lay.MeasureStringWidth(
CssBox.UnsafeGetTextBuffer(this),
textRun.TextStartIndex,
textRun.TextLength,
actualFont);
}
break;
case CssRunKind.SingleSpace:
{
run.Width = actualWordspacing;
}
break;
case CssRunKind.Space:
{
//other space size
run.Width = actualWordspacing * ((CssTextRun)run).TextLength;
}
break;
case CssRunKind.LineBreak:
{
run.Width = 0;
}
break;
}
}
}
this._boxCompactFlags |= BoxFlags.LAY_RUNSIZE_MEASURE;
}
void SetupEndHitPoint(CssBoxHitChain startChain, CssBoxHitChain endChain, ITextService ifonts)
{
//find global location of end point
HitInfo endHit = endChain.GetLastHit();
int xposOnEndLine = 0;
CssLineBox endline = null;
int run_sel_offset = 0;
//find endline first
this.endHitRunCharIndex = 0;
this.endHitRun = null;
switch (endHit.hitObjectKind)
{
default:
{
throw new NotSupportedException();
}
case HitObjectKind.Run:
{
CssRun endRun = (CssRun)endHit.hitObject;
//if (endRun.Text != null && endRun.Text.Contains("Jose"))
//{
//}
int run_sel_index;
endRun.FindSelectionPoint(ifonts,
endHit.localX,
out run_sel_index,
out run_sel_offset);
endline = endRun.HostLine;
xposOnEndLine = (int)(endRun.Left + run_sel_offset);
this.endHitRunCharIndex = run_sel_index;
this.endHitRun = endRun;
}
break;
case HitObjectKind.LineBox:
{
endline = (CssLineBox)endHit.hitObject;
xposOnEndLine = endHit.localX;
}
break;
case HitObjectKind.CssBox:
{
CssBox hitBox = (CssBox)endHit.hitObject;
endline = FindNearestLine(hitBox, endChain.RootGlobalY, 5);
xposOnEndLine = endHit.localX;
}
break;
}
#if DEBUG
if (xposOnEndLine == 0)
{
}
#endif
//----------------------------------
this.selectedLines = new List <CssLineBox>();
if (startHitHostLine == endline)
{
this.selectedLines.Add(endline);
startHitHostLine.Select(startLineBeginSelectionAtPixel, xposOnEndLine,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
return; //early exit here ***
}
//----------------------------------
//select on different line
LineWalkVisitor lineWalkVisitor = null;
int breakAtLevel;
if (FindCommonGround(startChain, endChain, out breakAtLevel) && breakAtLevel > 0)
{
var hit1 = endChain.GetHitInfo(breakAtLevel).hitObject;
var hitBlockRun = hit1 as CssBlockRun;
//multiple select
//1. first part
if (hitBlockRun != null)
{
startHitHostLine.Select(startLineBeginSelectionAtPixel, (int)hitBlockRun.Left,
this.startHitRun, this.startHitRunCharIndex,
this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(hitBlockRun);
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
}
else
{
startHitHostLine.SelectPartialToEnd(startLineBeginSelectionAtPixel, this.startHitRun, this.startHitRunCharIndex);
selectedLines.Add(this.startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(startHitHostLine);
}
lineWalkVisitor.SetWalkTargetPosition(endChain.RootGlobalX, endChain.RootGlobalY);
lineWalkVisitor.Walk(endline, (lineCoverage, linebox, partialLineRun) =>
{
switch (lineCoverage)
{
case LineCoverage.EndLine:
{
//found end line
linebox.SelectPartialFromStart(xposOnEndLine, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.PartialLine:
{
linebox.SelectPartialFromStart((int)partialLineRun.Right, this.endHitRun, this.endHitRunCharIndex);
selectedLines.Add(linebox);
}
break;
case LineCoverage.FullLine:
{
//check if hitpoint is in the line area
linebox.SelectFull();
selectedLines.Add(linebox);
}
break;
}
});
}
void SetupEndHitPoint(CssBoxHitChain startChain, CssBoxHitChain endChain, ITextService textService)
{
//find global location of end point
HitInfo endHit = endChain.GetLastHit();
int xposOnEndLine = 0;
CssLineBox endline = null;
//find endline first
_endHitRunCharIndex = 0;
_endHitRun = null;
switch (endHit.hitObjectKind)
{
default:
{
throw new NotSupportedException();
}
case HitObjectKind.Run:
{
CssRun endRun = (CssRun)endHit.hitObject;
#if DEBUG
//if (endRun.Text != null && endRun.Text.Contains("Jose"))
//{
//}
if (endHit.localX > 23)
{
}
System.Diagnostics.Debug.WriteLine(endHit.localX);
#endif
endRun.FindSelectionPoint(textService,
endHit.localX,
out int run_sel_index,
out int run_sel_offset);
endline = endRun.HostLine;
xposOnEndLine = (int)(endRun.Left + run_sel_offset);
_endHitRunCharIndex = run_sel_index;
#if DEBUG
System.Diagnostics.Debug.WriteLine(_endHitRunCharIndex);
#endif
_endHitRun = endRun;
}
break;
case HitObjectKind.LineBox:
{
endline = (CssLineBox)endHit.hitObject;
xposOnEndLine = endHit.localX;
}
break;
case HitObjectKind.CssBox:
{
CssBox hitBox = (CssBox)endHit.hitObject;
endline = FindNearestLine(hitBox, endChain.RootGlobalY, 5);
xposOnEndLine = endHit.localX;
}
break;
}
#if DEBUG
if (xposOnEndLine == 0)
{
}
#endif
//----------------------------------
_selectedLines = new List <CssLineBox>();
if (_startHitHostLine == endline)
{
_selectedLines.Add(endline);
_startHitHostLine.Select(_startLineBeginSelectionAtPixel, xposOnEndLine,
_startHitRun, _startHitRunCharIndex,
_endHitRun, _endHitRunCharIndex);
return; //early exit here ***
}
//----------------------------------
//select on different line
LineWalkVisitor lineWalkVisitor = null;
if (FindCommonGround(startChain, endChain, out int breakAtLevel) && breakAtLevel > 0)
{
CssBlockRun hitBlockRun = endChain.GetHitInfo(breakAtLevel).hitObject as CssBlockRun;
//multiple select
//1. first part
if (hitBlockRun != null)
{
_startHitHostLine.Select(_startLineBeginSelectionAtPixel, (int)hitBlockRun.Left,
_startHitRun, _startHitRunCharIndex,
_endHitRun, _endHitRunCharIndex);
_selectedLines.Add(_startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(hitBlockRun);
}
else
{
_startHitHostLine.SelectPartialToEnd(_startLineBeginSelectionAtPixel, _startHitRun, _startHitRunCharIndex);
_selectedLines.Add(_startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(_startHitHostLine);
}
}
else
{
_startHitHostLine.SelectPartialToEnd(_startLineBeginSelectionAtPixel, _startHitRun, _startHitRunCharIndex);
_selectedLines.Add(_startHitHostLine);
lineWalkVisitor = new LineWalkVisitor(_startHitHostLine);
}
lineWalkVisitor.SetWalkTargetPosition(endChain.RootGlobalX, endChain.RootGlobalY);
#if DEBUG
int dbugExpectedId = 1;
#endif
lineWalkVisitor.Walk(endline, (lineCoverage, linebox, partialLineRun) =>
{
#if DEBUG
//System.Diagnostics.Debug.WriteLine("sel:" + linebox.dbugId);
if (dbugExpectedId != linebox.dbugId)
{
}
dbugExpectedId++;
#endif
switch (lineCoverage)
{
case LineCoverage.EndLine:
{
//found end line
linebox.SelectPartialFromStart(xposOnEndLine, _endHitRun, _endHitRunCharIndex);
_selectedLines.Add(linebox);
}
break;
case LineCoverage.PartialLine:
{
linebox.SelectPartialFromStart((int)partialLineRun.Right, _endHitRun, _endHitRunCharIndex);
_selectedLines.Add(linebox);
}
break;
case LineCoverage.FullLine:
{
//check if hitpoint is in the line area
linebox.SelectFull();
_selectedLines.Add(linebox);
}
break;
}
});
}
public static bool HitTest(CssBox box, float x, float y, CssBoxHitChain hitChain)
{
#if DEBUG
//if (box.ViewportY != 0 && hitChain.debugEventPhase == CssBoxHitChain.dbugEventPhase.MouseDown)
//{
//}
#endif
//--------------------------------------
bool isPointInArea = box.IsPointInArea(x, y);
float boxHitLocalX = x - box.LocalX; //**
float boxHitLocalY = y - box.LocalY; //**
//----------------------------------------------------------------------
if (isPointInArea)
{
hitChain.AddHit(box, (int)boxHitLocalX, (int)boxHitLocalY);
}
//----------------------------------------------------------------------
//enter children space -> offset with its viewport
boxHitLocalX += box.ViewportX;
boxHitLocalY += box.ViewportY;
//check absolute layer first ***
if (box.HasAbsoluteLayer)
{
hitChain.PushContextBox(box);
foreach (CssBox absBox in box.GetAbsoluteChildBoxBackwardIter())
{
if (HitTest(absBox, boxHitLocalX, boxHitLocalY, hitChain))
{
//found hit
hitChain.PopContextBox(box);
return(true);
}
}
hitChain.PopContextBox(box);
}
//----------------------------------------------------------------------
if (!isPointInArea)
{
switch (box.CssDisplay)
{
case Css.CssDisplay.TableRow:
{
foreach (CssBox childBox in box.GetChildBoxIter())
{
if (HitTest(childBox, boxHitLocalX, boxHitLocalY, hitChain))
{
return(true);
}
}
}
break;
}
//exit
return(false);
}
//----------------------------------------------------------------------
//at here point is in the area***
hitChain.PushContextBox(box);
if (box.IsCustomCssBox)
{
//custom css box
//return true= stop here
if (box.CustomContentHitTest(boxHitLocalX, boxHitLocalY, hitChain))
{
hitChain.PopContextBox(box);
return(true);
}
}
if (box.LineBoxCount > 0)
{
bool foundSomeLine = false;
foreach (CssLineBox lineBox in box.GetLineBoxIter())
{
//line box not overlap
if (lineBox.HitTest(boxHitLocalX, boxHitLocalY))
{
foundSomeLine = true;
float lineBoxLocalY = boxHitLocalY - lineBox.CachedLineTop;
//2.
hitChain.AddHit(lineBox, (int)boxHitLocalX, (int)lineBoxLocalY);
CssRun foundRun = BoxHitUtils.GetCssRunOnLocation(lineBox, (int)boxHitLocalX, (int)lineBoxLocalY);
//CssRun foundRun = BoxHitUtils.GetCssRunOnLocation(lineBox, (int)x, (int)y);
if (foundRun != null)
{
//3.
hitChain.AddHit(foundRun, (int)(boxHitLocalX - foundRun.Left), (int)lineBoxLocalY);
//4. go deeper for block run
if (foundRun.Kind == CssRunKind.BlockRun)
{
CssBlockRun blockRun = (CssBlockRun)foundRun;
CssLineBox hostLine = blockRun.HostLine;
//adjust with hostline
HitTest(blockRun.ContentBox,
(int)(boxHitLocalX + blockRun.ContentBox.LocalX - foundRun.Left),
(int)(boxHitLocalY - hostLine.CachedLineTop),
hitChain);
}
}
//found line box
hitChain.PopContextBox(box);
return(true);
}
else if (foundSomeLine)
{
return(false);
}
}
}
else
{
//iterate in child
//foreach (var childBox in box.GetChildBoxIter())
foreach (CssBox childBox in box.GetChildBoxBackwardIter())
{
if (HitTest(childBox, boxHitLocalX, boxHitLocalY, hitChain))
{
//recursive
hitChain.PopContextBox(box);
return(true);
}
}
}
hitChain.PopContextBox(box);
return(true);
}