internal HitInfo(CssLineBox lineBox, int x, int y)
{
this.hitObject = lineBox;
this.hitObjectKind = HitObjectKind.LineBox;
this.localX = x;
this.localY = y;
}
Rectangle GetSelectionRectArea()
{
if (_selectedLines != null)
{
int j = _selectedLines.Count;
if (j > 0)
{
CssBox ownerCssBox = null;
float fx1 = 0, fy1 = 0; //left top
RectangleF selArea = RectangleF.Empty;
for (int i = 0; i < j; ++i)
{
CssLineBox line = _selectedLines[i];
if (line.OwnerBox != ownerCssBox)
{
ownerCssBox = line.OwnerBox;
ownerCssBox.GetGlobalLocationRelativeToRoot(out fx1, out fy1);
}
if (i == 0)
{
selArea = new RectangleF(fx1,
fy1 + line.CachedLineTop,
line.CachedLineContentWidth,
line.CacheLineHeight);
}
else
{
selArea = RectangleF.Union(selArea,
new RectangleF(fx1,
fy1 + line.CachedLineTop,
line.CachedLineContentWidth,
line.CacheLineHeight));
}
}
//if want to debug then send a big rect
//Console.WriteLine(new Rectangle((int)selArea.X, (int)selArea.Y, (int)selArea.Width, (int)selArea.Height).ToString());
//return new Rectangle(0, 0, 800, 600);
return(new Rectangle((int)selArea.Left, (int)selArea.Top, (int)selArea.Width, (int)selArea.Height));
}
}
return(Rectangle.Empty);
}
public void PaintSelection(PaintVisitor p, CssLineBox line)
{
if (this.Kind == SelectionSegmentKind.FullLine)
{
p.FillRectangle(Color.LightGray,
0,
0,
line.CachedLineContentWidth,
line.CacheLineHeight);
}
else
{
p.FillRectangle(
Color.LightGray,
this.BeginAtPx, 0,
this.WidthPx,
(int)line.CacheLineHeight);
}
}
void InnerWalk(CssLineBox endLineBox, VisitLineDelegate del, IEnumerable <CssLineBox> lineIter)
{
//recursive
foreach (var ln in lineIter)
{
this.currentVisitLineBox = ln;
if (ln == endLineBox)
{
del(LineCoverage.EndLine, ln, null);
//found endline
return;
}
else if (this.IsWalkTargetInCurrentLineArea())
{
int j = ln.RunCount;
bool isOK = false;
for (int i = 0; i < j && !isOK; ++i)
{
var run3 = ln.GetRun(i) as CssBlockRun;
if (run3 == null)
{
continue;
}
//recursive here
InnerWalk(endLineBox, del, GetLineWalkDownIter(this, run3.ContentBox));
if (i > 0)
{
del(LineCoverage.PartialLine, ln, ln.GetRun(i - 1));
}
isOK = true;
break;
}
}
else
{
del(LineCoverage.FullLine, ln, null);
}
}
}
public void PaintSelection(PaintVisitor p, CssLineBox line)
{
if (this.Kind == SelectionSegmentKind.FullLine)
{
p.FillRectangle(Color.LightGray,
0,
0,
line.CachedLineContentWidth,
line.CacheLineHeight);
}
else
{
p.FillRectangle(
Color.LightGray,
this.BeginAtPx, 0,
this.WidthPx,
(int)line.CacheLineHeight);
}
}
internal static void GetSplitInfo(CssBox box, CssLineBox lineBox, out bool isFirstLine, out bool isLastLine)
{
CssLineBox firstHostLine, lastHostLine;
var runList = box.Runs;
if (runList == null)
{
firstHostLine = lastHostLine = null;
}
else
{
int j = runList.Count;
firstHostLine = runList[0].HostLine;
lastHostLine = runList[j - 1].HostLine;
}
if (firstHostLine == lastHostLine)
{
//is on the same line
if (lineBox == firstHostLine)
{
isFirstLine = isLastLine = true;
}
else
{
isFirstLine = isLastLine = false;
}
}
else
{
if (firstHostLine == lineBox)
{
isFirstLine = true;
isLastLine = false;
}
else
{
isFirstLine = false;
isLastLine = true;
}
}
}
void InnerWalk(CssLineBox endLineBox, VisitLineDelegate del, IEnumerable <CssLineBox> lineIter)
{
//recursive
foreach (CssLineBox ln in lineIter)
{
#if DEBUG
//System.Diagnostics.Debug.WriteLine("pre_sel:" + ln.dbugId);
#endif
_currentVisitLineBox = ln;
if (ln == endLineBox)
{
del(LineCoverage.EndLine, ln, null);
//found endline
return;
}
else if (this.IsWalkTargetInCurrentLineArea())
{
int j = ln.RunCount;
bool isOK = false;
for (int i = 0; i < j && !isOK; ++i)
{
if (!(ln.GetRun(i) is CssBlockRun run3))
{
continue;
}
//recursive here
InnerWalk(endLineBox, del, GetLineWalkDownIter(this, run3.ContentBox));
if (i > 0)
{
del(LineCoverage.PartialLine, ln, ln.GetRun(i - 1));
}
isOK = true;
break;
}
}
else
{
del(LineCoverage.FullLine, ln, null);
}
}
}
static CssLineBox FindNearestLine(CssBox startBox, int globalY, int yRange)
{
CssLineBox latestLine = null;
CssBox latestLineBoxOwner = null;
float latestLineBoxGlobalYPos = 0;
foreach (CssLineBox lineBox in BoxHitUtils.GetDeepDownLineBoxIter(startBox))
{
if (lineBox.CacheLineHeight == 0)
{
continue;
}
if (latestLineBoxOwner != lineBox.OwnerBox)
{
//find global position of box
latestLineBoxOwner = lineBox.OwnerBox;
//TODO: review here , duplicate GetGlobalLocation
float gx, gy;
latestLineBoxOwner.GetGlobalLocation(out gx, out gy);
latestLineBoxGlobalYPos = gy;
}
float lineGlobalBottom = lineBox.CachedLineBottom + latestLineBoxGlobalYPos;
if (lineGlobalBottom <= globalY)
{
latestLine = lineBox;
}
else
{
latestLine = lineBox;
break;
}
}
return(latestLine);
}
/// <summary>
/// Recursively flows the content of the box using the inline model
/// </summary>
/// <param name="lay"></param>
/// <param name="hostBox"></param>
/// <param name="srcBox"></param>
/// <param name="limitLocalRight"></param>
/// <param name="firstRunStartX"></param>
/// <param name="hostLine"></param>
/// <param name="cx"></param>
static void FlowBoxContentIntoHostLineFmtContext(
LayoutVisitor lay,
CssBox hostBox, //target host box that contains line formatting context
CssBox srcBox, //src that has runs /splitable content) to flow into hostBox line model
float limitLocalRight,
float firstRunStartX,
ref CssLineBox hostLine,
ref float cx,
ref FloatFormattingContext floatCtx)
{
//recursive ***
//--------------------------------------------------------------------
var oX = cx;
if (srcBox.HasOnlyRuns)
{
//condition 3
FlowRunsIntoHost(lay, hostBox, srcBox, srcBox, 0,
limitLocalRight, firstRunStartX,
0, 0,
CssBox.UnsafeGetRunList(srcBox),
ref hostLine, ref cx
);
}
else
{
int childNumber = 0;
var ifonts = lay.SampleIFonts;
CssBoxCollection children = CssBox.UnsafeGetChildren(srcBox);
var cNode = children.GetFirstLinkedNode();
while (cNode != null)
{
float leftMostSpace = 0, rightMostSpace = 0;
CssBox b = cNode.Value;
//if b has absolute pos then it is removed from the flow
if (b.NeedComputedValueEvaluation)
{
b.ReEvaluateComputedValues(ifonts, hostBox);
}
b.MeasureRunsSize(lay);
#if DEBUG
if (b.Position == CssPosition.Absolute)
{
//should not found here!
throw new NotSupportedException();
}
#endif
cx += leftMostSpace;
if (b.CssDisplayInside == CssDisplayInside.FlowRoot)//eg. inline block
{
//--------
// if inside display is FlowRoot ***
//---------
//outside -> inline
//inside -> flow-root
//can't split
//create 'block-run'
CssLayoutEngine.PerformContentLayout(b, lay);
CssBlockRun blockRun = b.JustBlockRun;
if (blockRun == null)
{
blockRun = new CssBlockRun(b);
blockRun.SetOwner(srcBox);
b.JustBlockRun = blockRun;
}
if (b.Width.IsEmptyOrAuto)
{
blockRun.SetSize(CssBox.GetLatestCachedMinWidth(b), b.VisualHeight);
}
else
{
blockRun.SetSize(b.VisualWidth, b.VisualHeight);
}
b.SetLocation(b.LocalX, 0); //because of inline***
FlowRunsIntoHost(lay, hostBox, srcBox, b, childNumber,
limitLocalRight, firstRunStartX,
leftMostSpace, rightMostSpace,
new List<CssRun>() { b.JustBlockRun },
ref hostLine, ref cx);
}
else if (b.CssDisplayOutside == CssDisplayOutside.Block)
{
//warning : this code block not follow w3c spec ***
CssLayoutEngine.PerformContentLayout(b, lay);
CssBlockRun blockRun = b.JustBlockRun;
if (blockRun == null)
{
blockRun = new CssBlockRun(b);
blockRun.SetOwner(srcBox);
b.JustBlockRun = blockRun;
}
//set width to full ***
blockRun.SetSize(hostBox.GetClientWidth(), b.VisualHeight);
b.SetLocation(b.LocalX, 0); //because of inline***
FlowRunsIntoHost(lay, hostBox, srcBox, b, childNumber,
limitLocalRight, firstRunStartX,
leftMostSpace, rightMostSpace,
new List<CssRun>() { b.JustBlockRun },
ref hostLine, ref cx);
}
else if (b.HasOnlyRuns)
{
switch (b.Float)
{
default:
case CssFloat.None:
{
FlowRunsIntoHost(lay, hostBox, srcBox, b, childNumber,
limitLocalRight, firstRunStartX,
leftMostSpace, rightMostSpace,
CssBox.UnsafeGetRunList(b),
ref hostLine, ref cx);
}
break;
case CssFloat.Left:
{
//float is out of flow item
//1. current line is shortening
//2. add 'b' to special container ***
var newAnonBlock = new CssFloatContainerBox(
CssBox.UnsafeGetBoxSpec(b),
b.RootGfx, CssDisplay.Block);
newAnonBlock.ReEvaluateComputedValues(ifonts, hostBox);
//add to abs layer
hostBox.AppendToAbsoluteLayer(newAnonBlock);
newAnonBlock.ResetLineBoxes();
float localX1 = 0;
var line = new CssLineBox(newAnonBlock);
newAnonBlock.AddLineBox(line);
var newFloatCtx = new FloatFormattingContext();
FlowBoxContentIntoHostLineFmtContext(lay, newAnonBlock, b,
limitLocalRight, 0,
ref line, ref localX1, ref newFloatCtx);
float localY = 0;
int interlineSpace = 0;
float maxLineWidth = 0;
CssTextAlign textAlign = newAnonBlock.CssTextAlign;
foreach (CssLineBox linebox in newAnonBlock.GetLineBoxIter())
{
ApplyAlignment(linebox, textAlign, lay);
linebox.CloseLine(lay); //***
linebox.CachedLineTop = localY;
localY += linebox.CacheLineHeight + interlineSpace;
if (maxLineWidth < linebox.CachedExactContentWidth)
{
maxLineWidth = linebox.CachedExactContentWidth;
}
}
float hostSizeW = hostBox.VisualWidth;
SetFinalInnerContentSize(newAnonBlock, maxLineWidth, localY, lay);
//need to adjust line box
//TODO: review here!,
if (hostLine.CanDoMoreLeftOffset(newAnonBlock.InnerContentWidth, limitLocalRight))
{
hostLine.DoLeftOffset(newAnonBlock.InnerContentWidth);
cx = hostLine.GetRightOfLastRun();
newAnonBlock.SetLocation(floatCtx.lineLeftOffset, floatCtx.offsetFloatTop); //TODO: review top location again
floatCtx.lineLeftOffset = newAnonBlock.LocalX + newAnonBlock.InnerContentWidth;
}
else
{
//newline
newAnonBlock.SetLocation(hostBox.GetClientLeft(), hostLine.CalculateLineHeight());
floatCtx.offsetFloatTop = newAnonBlock.LocalY;
}
}
break;
case CssFloat.Right:
{
//float is out of flow item
//1. create new block box and then
//flow content in to this new box
var newAnonBlock = new CssFloatContainerBox(
CssBox.UnsafeGetBoxSpec(b),
b.RootGfx, CssDisplay.Block);
newAnonBlock.ReEvaluateComputedValues(ifonts, hostBox);
//add to abs layer
hostBox.AppendToAbsoluteLayer(newAnonBlock);
newAnonBlock.ResetLineBoxes();
float localX1 = 0;
var line = new CssLineBox(newAnonBlock);
newAnonBlock.AddLineBox(line);
var newFloatCtx = new FloatFormattingContext();
FlowBoxContentIntoHostLineFmtContext(lay, newAnonBlock, b,
limitLocalRight, 0,
ref line, ref localX1, ref newFloatCtx);
float localY = 0;
int interlineSpace = 0;
float maxLineWidth = 0;
CssTextAlign textAlign = newAnonBlock.CssTextAlign;
foreach (CssLineBox linebox in newAnonBlock.GetLineBoxIter())
{
ApplyAlignment(linebox, textAlign, lay);
linebox.CloseLine(lay); //***
linebox.CachedLineTop = localY;
localY += linebox.CacheLineHeight + interlineSpace;
if (maxLineWidth < linebox.CachedExactContentWidth)
{
maxLineWidth = linebox.CachedExactContentWidth;
}
}
SetFinalInnerContentSize(newAnonBlock, maxLineWidth, localY, lay);
//todo: review here
float hostSizeW = hostBox.VisualWidth;
var rightOfLastRun = hostLine.GetRightOfLastRun();
if (!floatCtx.floatingOutOfLine)
{
if (rightOfLastRun + maxLineWidth < hostSizeW - floatCtx.lineRightOffset)
{
float newX = hostSizeW - (maxLineWidth + floatCtx.lineRightOffset);
newAnonBlock.SetLocation(newX, floatCtx.offsetFloatTop);
floatCtx.lineRightOffset = newX;
floatCtx.rightFloatBox = newAnonBlock;
floatCtx.floatingOutOfLine = true;
}
else
{
//start newline
float newX = hostSizeW - maxLineWidth;
newAnonBlock.SetLocation(newX, floatCtx.offsetFloatTop + hostLine.CalculateLineHeight());
floatCtx.lineRightOffset = newX;
floatCtx.rightFloatBox = newAnonBlock;
floatCtx.floatingOutOfLine = true;
floatCtx.offsetFloatTop = newAnonBlock.LocalY;
}
}
else
{
//out-of-line mode
if (floatCtx.rightFloatBox != null)
{
float newX = floatCtx.rightFloatBox.LocalX - maxLineWidth;
if (newX > 0)
{
newAnonBlock.SetLocation(newX, floatCtx.offsetFloatTop);
floatCtx.lineRightOffset = newX;
floatCtx.rightFloatBox = newAnonBlock;
floatCtx.offsetFloatTop = newAnonBlock.LocalY;
}
else
{ //start new line
newX = hostSizeW - maxLineWidth;
newAnonBlock.SetLocation(newX, floatCtx.rightFloatBox.LocalY + floatCtx.rightFloatBox.InnerContentHeight);
floatCtx.lineRightOffset = newX;
floatCtx.rightFloatBox = newAnonBlock;
floatCtx.offsetFloatTop = newAnonBlock.LocalY + newAnonBlock.InnerContentHeight;
}
}
else
{
throw new NotSupportedException();
}
}
}
break;
}
}
else
{
//go deeper
//recursive ***
//not new lineFormatting context
FlowBoxContentIntoHostLineFmtContext(lay, hostBox, b,
limitLocalRight, firstRunStartX,
ref hostLine, ref cx, ref floatCtx);
}
cx += rightMostSpace;
childNumber++;
//---------------------
cNode = cNode.Next;
}
}
if (srcBox.Position == CssPosition.Relative)
{
//offset content relative to it 'flow' position'
var left = CssValueParser.ConvertToPx(srcBox.Left, hostBox.VisualWidth, srcBox);
var top = CssValueParser.ConvertToPx(srcBox.Top, hostBox.VisualWidth, srcBox);
srcBox.SetLocation(srcBox.LocalX + left, srcBox.LocalY + top);
}
}
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();
}
}
}
///// walk down and up
///// </summary>
///// <param name="startLine"></param>
///// <returns></returns>
//static IEnumerable<CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
//{
// float sx, sy;
// startLine.OwnerBox.GetGlobalLocation(out sx, out sy);
// CssLineBox curLine = startLine;
// //walk up and down the tree
// CssLineBox nextline = curLine.NextLine;
// while (nextline != null)
// {
// visitor._globalY = sy + startLine.CachedLineTop;
// yield return nextline;
// nextline = nextline.NextLine;
// }
// //--------------------
// //no next line
// //then walk up ***
// CssBox curBox = startLine.OwnerBox;
// RETRY://***
// CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
// while (level1Sibling != null)
// {
// level1Sibling.GetGlobalLocation(out sx, out sy);
// visitor._globalY = sy;
// //walk down
// foreach (CssLineBox line in GetLineWalkDownIter(visitor, level1Sibling))
// {
// yield return line;
// }
// level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
// }
// //--------------------
// //other further sibling
// //then step to parent of lineOwner
// if (curBox.ParentBox != null)
// {
// //if has parent
// //walk up***
// curBox = curBox.ParentBox;
// goto RETRY;
// }
//}
/// walk down and up
/// </summary>
/// <param name="startLine"></param>
/// <returns></returns>
static IEnumerable <CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
{
PointF p = new PointF();
startLine.OwnerBox.GetGlobalLocationRelativeToRoot(ref p);
CssLineBox curLine = startLine;
//walk up and down the tree
CssLineBox nextline = curLine.NextLine;
while (nextline != null)
{
visitor._globalY = p.Y + startLine.CachedLineTop;
yield return(nextline);
nextline = nextline.NextLine;
}
//--------------------
//no next line
//then walk up ***
CssBox curBox = startLine.OwnerBox;
RETRY: //***
CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
while (level1Sibling != null)
{
p = new PointF();
level1Sibling.GetGlobalLocationRelativeToRoot(ref p);
visitor._globalY = p.Y;
//walk down
foreach (CssLineBox line in GetLineWalkDownIter(visitor, level1Sibling))
{
yield return(line);
}
level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
}
//--------------------
//other further sibling
//then step to parent of lineOwner
if (curBox.ParentBox != null)
{
//if has parent
//walk up***
curBox = curBox.ParentBox;
goto RETRY;
}
}
public static bool HitTest(CssBox box, float x, float y, CssBoxHitChain hitChain)
{
//--------------------------------------
float boxHitLocalX = x - box.LocalX;
float boxHitLocalY = y - box.LocalY;
bool isPointInArea = box.IsPointInArea(x, y);
//----------------------------------------------------------------------
if (isPointInArea)
{
hitChain.AddHit(box, (int)boxHitLocalX, (int)boxHitLocalY);
}
//check absolute layer first ***
if (box.HasAbsoluteLayer)
{
hitChain.PushContextBox(box);
foreach (var 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 (var childBox in box.GetChildBoxIter())
{
if (HitTest(childBox, x, y, 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(x, y, hitChain))
{
hitChain.PopContextBox(box);
return(true);
}
}
if (box.LineBoxCount > 0)
{
bool foundSomeLine = false;
foreach (var 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);
var foundRun = BoxHitUtils.GetCssRunOnLocation(lineBox, (int)boxHitLocalX, (int)lineBoxLocalY);
if (foundRun != null)
{
//3.
hitChain.AddHit(foundRun, (int)(boxHitLocalX - foundRun.Left), (int)lineBoxLocalY);
//4. go deeper for block run
if (foundRun.Kind == CssRunKind.BlockRun)
{
var blockRun = (CssBlockRun)foundRun;
CssLineBox hostLine = blockRun.HostLine;
//adjust with hostline
HitTest(((CssBlockRun)foundRun).ContentBox, (int)(boxHitLocalX - foundRun.Left), 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())
{
if (HitTest(childBox, boxHitLocalX, boxHitLocalY, hitChain))
{
//recursive
hitChain.PopContextBox(box);
return(true);
}
}
}
hitChain.PopContextBox(box);
return(true);
}
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;
}
});
}
/// <summary>
/// Applies right alignment to the text on the linebox
/// </summary>
/// <param name="g"></param>
/// <param name="line"></param>
static void ApplyRightAlignment(CssLineBox line)
{
if (line.RunCount == 0)
{
return;
}
CssRun lastRun = line.GetLastRun();
float diff = line.OwnerBox.GetClientWidth() - line.GetLastRun().Right;
if (diff > CSS_OFFSET_THRESHOLD)
{
foreach (CssRun word in line.GetRunIter())
{
word.Left += diff;
}
}
}
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();
}
}
}
static void ApplyJustifyAlignment(CssLineBox lineBox)
{
if (lineBox.IsLastLine) return;
float indent = lineBox.IsFirstLine ? lineBox.OwnerBox.ActualTextIndent : 0f;
float runWidthSum = 0f;
int runCount = 0;
float availableWidth = lineBox.OwnerBox.GetClientWidth() - indent;
// Gather text sum
foreach (CssRun w in lineBox.GetRunIter())
{
runWidthSum += w.Width;
runCount++;
}
if (runCount == 0) return; //Avoid Zero division
float spaceOfEachRun = (availableWidth - runWidthSum) / runCount; //Spacing that will be used
float cX = lineBox.OwnerBox.GetClientLeft() + indent;
CssRun lastRun = lineBox.GetLastRun();
foreach (CssRun run in lineBox.GetRunIter())
{
run.Left = cX;
cX = run.Right + spaceOfEachRun;
if (run == lastRun)
{
run.Left = lineBox.OwnerBox.GetClientRight() - run.Width;
}
}
}
/// <summary>
/// Applies centered alignment to the text on the linebox
/// </summary>
/// <param name="g"></param>
/// <param name="line"></param>
static void ApplyCenterAlignment(CssLineBox line)
{
if (line.RunCount == 0) return;
CssRun lastRun = line.GetLastRun();
float diff = (line.OwnerBox.GetClientWidth() - lastRun.Right) / 2;
if (diff > CSS_OFFSET_THRESHOLD)
{
foreach (CssRun word in line.GetRunIter())
{
word.Left += diff;
}
line.CachedLineContentWidth += diff;
}
}
/// <summary>
/// Applies right to left direction to words
/// </summary>
/// <param name="blockBox"></param>
/// <param name="lineBox"></param>
static void ApplyRightToLeft(CssLineBox lineBox)
{
if (lineBox.RunCount > 0)
{
float left = lineBox.GetFirstRun().Left;
float right = lineBox.GetLastRun().Right;
foreach (CssRun run in lineBox.GetRunIter())
{
float diff = run.Left - left;
float w_right = right - diff;
run.Left = w_right - run.Width;
}
}
}
/// <summary>
/// Applies vertical and horizontal alignment to words in lineboxes
/// </summary>
/// <param name="g"></param>
/// <param name="lineBox"></param>
static void ApplyAlignment(CssLineBox lineBox, CssTextAlign textAlign, LayoutVisitor lay)
{
switch (textAlign)
{
case CssTextAlign.Right:
ApplyRightAlignment(lineBox);
break;
case CssTextAlign.Center:
ApplyCenterAlignment(lineBox);
break;
case CssTextAlign.Justify:
ApplyJustifyAlignment(lineBox);
break;
default:
break;
}
//---------------------------------------------
// Applies vertical alignment to the linebox
return;
//TODO: review here
lineBox.ApplyBaseline(lineBox.CalculateTotalBoxBaseLine(lay));
//---------------------------------------------
}
/// <summary>
/// do layout line formatting context
/// </summary>
/// <param name="hostBlock"></param>
/// <param name="lay"></param>
public static void DoLayoutLinesContext(CssBox hostBlock, LayoutVisitor lay)
{
//this in line formatting context
//*** hostBlock must confirm that it has all inline children
hostBlock.SetHeightToZero();
hostBlock.ResetLineBoxes();
//----------------------------------------------------------------------------------------
float limitLocalRight = hostBlock.VisualWidth - (hostBlock.ActualPaddingRight + hostBlock.ActualBorderRightWidth);
float localX = hostBlock.ActualTextIndent + hostBlock.ActualPaddingLeft + hostBlock.ActualBorderLeftWidth;
float localY = hostBlock.ActualPaddingTop + hostBlock.ActualBorderTopWidth;
//----------------------------------------------------------------------------------------
if (lay.HasFloatBoxInContext)
{
var recentLeftFloatBox = lay.LatestLeftFloatBox;
var recentRightFloatBox = lay.LatestRightFloatBox;
var latestSibling = lay.LatestSiblingBox;
if (latestSibling != null)
{
//check latest sibling first
if (hostBlock.Float == CssFloat.None)
{
if (recentLeftFloatBox != null)
{
if (hostBlock.LocalY < recentLeftFloatBox.LocalVisualBottom)
{
localX = recentLeftFloatBox.LocalVisualRight;
}
}
else
{
}
}
}
else
{
if (hostBlock.Float == CssFloat.None)
{
if (recentLeftFloatBox != null)
{
localX = recentLeftFloatBox.LocalVisualRight;
}
if (recentRightFloatBox != null)
{
limitLocalRight = recentRightFloatBox.LocalX;
}
}
//check if need newline or not
}
}
int interlineSpace = 0;
//First line box
var line = new CssLineBox(hostBlock);
hostBlock.AddLineBox(line);
//****
var floatCtx = new FloatFormattingContext();
FlowBoxContentIntoHostLineFmtContext(lay, hostBlock, hostBlock,
limitLocalRight, localX,
ref line, ref localX, ref floatCtx);
//****
// if width is not restricted we need to lower it to the actual width
if (hostBlock.VisualWidth + lay.ContainerBlockGlobalX >= CssBoxConstConfig.BOX_MAX_RIGHT)
{
float newWidth = localX + hostBlock.ActualPaddingRight + hostBlock.ActualBorderRightWidth;// CssBox.MAX_RIGHT - (args.ContainerBlockGlobalX + blockBox.LocalX);
if (newWidth <= CSS_OFFSET_THRESHOLD)
{
newWidth = CSS_OFFSET_THRESHOLD;
}
hostBlock.SetVisualWidth(newWidth);
}
//---------------------
float maxLineWidth = 0;
if (hostBlock.CssDirection == CssDirection.Rtl)
{
CssTextAlign textAlign = hostBlock.CssTextAlign;
foreach (CssLineBox linebox in hostBlock.GetLineBoxIter())
{
ApplyAlignment(linebox, textAlign, lay);
ApplyRightToLeft(linebox); //***
linebox.CloseLine(lay); //***
linebox.CachedLineTop = localY;
localY += linebox.CacheLineHeight + interlineSpace; // + interline space?
if (maxLineWidth < linebox.CachedExactContentWidth)
{
maxLineWidth = linebox.CachedExactContentWidth;
}
}
}
else
{
CssTextAlign textAlign = hostBlock.CssTextAlign;
foreach (CssLineBox linebox in hostBlock.GetLineBoxIter())
{
ApplyAlignment(linebox, textAlign, lay);
linebox.CloseLine(lay); //***
linebox.CachedLineTop = localY;
localY += linebox.CacheLineHeight + interlineSpace;
if (maxLineWidth < linebox.CachedExactContentWidth)
{
maxLineWidth = linebox.CachedExactContentWidth;
}
}
}
hostBlock.SetVisualHeight(localY + hostBlock.ActualPaddingBottom + hostBlock.ActualBorderBottomWidth);
//final
SetFinalInnerContentSize(hostBlock, maxLineWidth, hostBlock.VisualHeight, lay);
}
internal static void GetSplitInfo(CssBox box, CssLineBox lineBox, out bool isFirstLine, out bool isLastLine)
{
CssLineBox firstHostLine, lastHostLine;
var runList = box.Runs;
if (runList == null)
{
firstHostLine = lastHostLine = null;
}
else
{
int j = runList.Count;
firstHostLine = runList[0].HostLine;
lastHostLine = runList[j - 1].HostLine;
}
if (firstHostLine == lastHostLine)
{
//is on the same line
if (lineBox == firstHostLine)
{
isFirstLine = isLastLine = true;
}
else
{
isFirstLine = isLastLine = false;
}
}
else
{
if (firstHostLine == lineBox)
{
isFirstLine = true;
isLastLine = false;
}
else
{
isFirstLine = false;
isLastLine = true;
}
}
}
public LineWalkVisitor(CssLineBox startLineBox)
{
this.startLineBox = startLineBox;
float endElemX = 0, endElemY = 0;
startLineBox.OwnerBox.GetGlobalLocation(out endElemX, out endElemY);
this.globalX = endElemX;
this.globalY = endElemY + startLineBox.CachedLineTop;
}
internal static CssRun GetCssRunOnLocation(CssLineBox lineBox, int x, int y)
{
foreach (CssRun word in lineBox.GetRunIter())
{
// add word spacing to word width so sentance won't have hols in it when moving the mouse
var rect = word.Rectangle;
//rect.Width += word.OwnerBox.ActualWordSpacing;
if (rect.Contains(x, y))
{
return word;
}
}
return null;
}
public void Walk(CssLineBox endLineBox, VisitLineDelegate del)
{
//2 cases :
//1. start with BlockRun
//2. start with LineBox
InnerWalk(endLineBox,
del,
(startBlockRun != null) ?
GetLineWalkDownIter(this, startBlockRun.ContentBox) :
GetLineWalkDownAndUpIter(this, startLineBox));
}
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();
}
}
}
void InnerWalk(CssLineBox endLineBox, VisitLineDelegate del, IEnumerable<CssLineBox> lineIter)
{
//recursive
foreach (var ln in lineIter)
{
this.currentVisitLineBox = ln;
if (ln == endLineBox)
{
del(LineCoverage.EndLine, ln, null);
//found endline
return;
}
else if (this.IsWalkTargetInCurrentLineArea())
{
int j = ln.RunCount;
bool isOK = false;
for (int i = 0; i < j && !isOK; ++i)
{
var run3 = ln.GetRun(i) as CssBlockRun;
if (run3 == null) continue;
//recursive here
InnerWalk(endLineBox, del, GetLineWalkDownIter(this, run3.ContentBox));
if (i > 0)
{
del(LineCoverage.PartialLine, ln, ln.GetRun(i - 1));
}
isOK = true;
break;
}
}
else
{
del(LineCoverage.FullLine, ln, null);
}
}
}
internal void AddHit(CssLineBox lineBox, int x, int y)
{
//position x,y relate with (0,0) of its linebox
hitInfoList.Add(new HitInfo(lineBox, x, y));
}
/// walk down and up
/// </summary>
/// <param name="startLine"></param>
/// <returns></returns>
static IEnumerable<CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
{
float sx, sy;
startLine.OwnerBox.GetGlobalLocation(out sx, out sy);
CssLineBox curLine = startLine;
//walk up and down the tree
CssLineBox nextline = curLine.NextLine;
while (nextline != null)
{
visitor.globalY = sy + startLine.CachedLineTop;
yield return nextline;
nextline = nextline.NextLine;
}
//--------------------
//no next line
//then walk up ***
CssBox curBox = startLine.OwnerBox;
RETRY:
CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
while (level1Sibling != null)
{
level1Sibling.GetGlobalLocation(out sx, out sy);
visitor.globalY = sy;
//walk down
foreach (var line in GetLineWalkDownIter(visitor, level1Sibling))
{
yield return line;
}
level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
}
//--------------------
//other further sibling
//then step to parent of lineOwner
if (curBox.ParentBox != null)
{
//if has parent
//walk up***
curBox = curBox.ParentBox;
goto RETRY;
}
}
/// walk down and up
/// </summary>
/// <param name="startLine"></param>
/// <returns></returns>
static IEnumerable <CssLineBox> GetLineWalkDownAndUpIter(LineWalkVisitor visitor, CssLineBox startLine)
{
float sx, sy;
startLine.OwnerBox.GetGlobalLocation(out sx, out sy);
CssLineBox curLine = startLine;
//walk up and down the tree
CssLineBox nextline = curLine.NextLine;
while (nextline != null)
{
visitor.globalY = sy + startLine.CachedLineTop;
yield return(nextline);
nextline = nextline.NextLine;
}
//--------------------
//no next line
//then walk up ***
CssBox curBox = startLine.OwnerBox;
RETRY:
CssBox level1Sibling = BoxHitUtils.GetNextSibling(curBox);
while (level1Sibling != null)
{
level1Sibling.GetGlobalLocation(out sx, out sy);
visitor.globalY = sy;
//walk down
foreach (var line in GetLineWalkDownIter(visitor, level1Sibling))
{
yield return(line);
}
level1Sibling = BoxHitUtils.GetNextSibling(level1Sibling);
}
//--------------------
//other further sibling
//then step to parent of lineOwner
if (curBox.ParentBox != null)
{
//if has parent
//walk up***
curBox = curBox.ParentBox;
goto RETRY;
}
}
internal void AddHit(CssLineBox lineBox, int x, int y)
{
//position x,y relate with (0,0) of its linebox
_hitInfoList.Add(new HitInfo(lineBox, x, y));
}
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);
}
public static void SelectFull(this CssLineBox lineBox)
{
//full line selection
lineBox.SelectionSegment = SelectionSegment.FullLine;
}
internal void AddLineBox(CssLineBox linebox)
{
linebox.linkedNode = this._clientLineBoxes.AddLast(linebox);
}
internal static void SetHostLine(CssRun run, CssLineBox hostline)
{
run._hostline = hostline;
}
//---------------------------
static void FlowRunsIntoHost(LayoutVisitor lay,
CssBox hostBox,
CssBox splitableBox,
CssBox b,
int childNumber, //child number of b
float limitRight,
float firstRunStartX,
float leftMostSpace,
float rightMostSpace,
List<CssRun> runs,
ref CssLineBox hostLine,
ref float cx)
{
//flow runs into hostLine, create new line if need
bool wrapNoWrapBox = false;
CssWhiteSpace bWhiteSpace = b.WhiteSpace;
bool hostBoxIsB = hostBox == b;
if (bWhiteSpace == CssWhiteSpace.NoWrap && cx > firstRunStartX)
{
var tmpRight = cx;
for (int i = runs.Count - 1; i >= 0; --i)
{
tmpRight += runs[i].Width;
}
//-----------------------------------------
if (tmpRight > limitRight)
{
wrapNoWrapBox = true;
}
}
//-----------------------------------------------------
int lim = runs.Count - 1;
for (int i = 0; i <= lim; ++i)
{
var run = runs[i];
//---------------------------------------------------
//check if need to start new line ?
if ((cx + run.Width + rightMostSpace > limitRight &&
bWhiteSpace != CssWhiteSpace.NoWrap &&
bWhiteSpace != CssWhiteSpace.Pre &&
(bWhiteSpace != CssWhiteSpace.PreWrap || !run.IsSpaces))
|| run.IsLineBreak || wrapNoWrapBox)
{
wrapNoWrapBox = false; //once!
//-------------------------------
//create new line ***
hostLine = new CssLineBox(hostBox);
hostBox.AddLineBox(hostLine);
//reset x pos for new line
cx = firstRunStartX;
// handle if line is wrapped for the first text element where parent has left margin/padding
if (childNumber == 0 && //b is first child of splitable box ('b' == splitableBox.GetFirstChild())
!run.IsLineBreak &&
(i == 0 || splitableBox.ParentBox.IsBlock))//this run is first run of 'b' (run == b.FirstRun)
{
//TODO: review here again!!!!
//cx += splitableBox.ActualMarginLeft +
// splitableBox.ActualBorderLeftWidth +
// splitableBox.ActualPaddingLeft;
}
if (run.IsSolidContent || i == 0)
{
cx += leftMostSpace;
}
}
//---------------------------------------------------
if (run.IsSpaces && hostLine.RunCount == 0)
{
//not add
continue;
}
//---------------------------------------------------
hostLine.AddRun(run); //***
if (lim == 0)
{
//single one
if (!hostBoxIsB)
{
cx += b.ActualPaddingLeft;
}
run.SetLocation(cx, 0);
cx += run.Width + b.ActualPaddingRight;
}
else
{
if (i == 0)
{
//first
if (!hostBoxIsB)
{
cx += b.ActualPaddingLeft;
}
run.SetLocation(cx, 0);
cx = run.Right;
}
else if (i == lim)
{
run.SetLocation(cx, 0);
cx += run.Width + b.ActualPaddingRight;
}
else
{
run.SetLocation(cx, 0);
cx = run.Right;
}
}
//---------------------------------------------------
//move current_line_x to right of run
//cx = run.Right;
}
}
protected virtual void PaintImp(PaintVisitor p)
{
//if (this.dbugMark2 == 10 || this.dbugMark2 == 12)
//{
//}
Css.CssDisplay display = this.CssDisplay;
if (display == Css.CssDisplay.TableCell &&
this.EmptyCells == Css.CssEmptyCell.Hide &&
this.IsSpaceOrEmpty)
{
return;
}
#if DEBUG
p.dbugEnterNewContext(this, PaintVisitor.PaintVisitorContextName.Init);
#endif
//-----------------------------------------------
bool hasPrevClip = false;
RectangleF prevClip = RectangleF.Empty;
p.EnterNewLatePaintContext();
//---------------------------------------------
//if (display != Css.CssDisplay.Inline ||
// this.Position == Css.CssPosition.Absolute ||
// this.Position == Css.CssPosition.Fixed)
if (this._renderBGAndBorder)
{
RectangleF bound = new RectangleF(0, 0, this.VisualWidth, this.VisualHeight);
PaintBackground(p, bound, true, true);
if (this.HasSomeVisibleBorder)
{
p.PaintBorders(this, bound, true, true);
}
#if DEBUG
dbugPaint(p, bound);
#endif
}
//---------------------------------------------
if (this.LineBoxCount > 0)
{
float viewport_top = p.ViewportTop;
float viewport_bottom = p.ViewportBottom;
int drawState = 0;
var c_lineNode = this._clientLineBoxes.First;
while (c_lineNode != null)
{
CssLineBox line = c_lineNode.Value;
if (line.CachedLineBottom >= viewport_top &&
line.CachedLineTop <= viewport_bottom)
{
#if DEBUG
dbugCounter.dbugLinePaintCount++;
#endif
drawState = 1;//drawing in viewport area
int cX = p.CanvasOriginX;
int cy = p.CanvasOriginY;
p.SetCanvasOrigin(cX, cy + (int)line.CachedLineTop);
//1.
line.PaintBackgroundAndBorder(p);
if (line.SelectionSegment != null)
{
line.SelectionSegment.PaintSelection(p, line);
}
//2.
line.PaintRuns(p);
//3.
line.PaintDecoration(p);
#if DEBUG
line.dbugPaintRuns(p);
#endif
p.SetCanvasOrigin(cX, cy);//back
}
else if (drawState == 1)
{
//outof viewport -> break
break;
}
//----------------------------------------
c_lineNode = c_lineNode.Next;
}
}
else
{
if (this.HasContainingBlockProperty)
{
p.PushContaingBlock(this);
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
var node = this._aa_boxes.GetFirstLinkedNode();
while (node != null)
{
CssBox b = node.Value;
if (b.CssDisplay == Css.CssDisplay.None)
{
node = node.Next;
continue;
}
else if (b.IsOutOfFlowBox)
{
//
p.AddToLatePaintList(b);
node = node.Next;
continue;
}
//move to left-top of client box
p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
if (b.decorator != null)
{
b.decorator.Paint(b, p);
}
if (b.HasClipArea)
{
if (p.PushLocalClipArea(b.VisualWidth, b.VisualHeight))
{
b.Paint(p);
}
p.PopLocalClipArea();
}
else
{
b.Paint(p);
}
node = node.Next;
}
p.SetCanvasOrigin(ox, oy);
p.PopContainingBlock();
}
else
{
//if not
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
var node = this._aa_boxes.GetFirstLinkedNode();
while (node != null)
{
CssBox b = node.Value;
if (b.CssDisplay == Css.CssDisplay.None)
{
node = node.Next;
continue;
}
p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
b.Paint(p);
node = node.Next;
}
p.SetCanvasOrigin(ox, oy);
}
}
//------------------------------------------
//debug
//var clientLeft = this.ClientLeft;
//g.DrawRectangle(Pens.GreenYellow, 0, 0, 5, 10);
//g.DrawRectangle(Pens.HotPink, this.ClientRight - 5, 0, 5, 10);
//------------------------------------------
if (this.HasAbsoluteLayer)
{
p.PushContaingBlock(this);
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
var node = this._absPosLayer.GetFirstLinkedNode();
while (node != null)
{
CssBox b = node.Value;
if (b.CssDisplay == Css.CssDisplay.None)
{
node = node.Next;
continue;
}
p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
b.Paint(p);
node = node.Next;
}
p.SetCanvasOrigin(ox, oy);
p.PopContainingBlock();
}
if (p.LatePaintItemCount > 0)
{
//late paint -> floatBox
Rectangle latestClipRect = p.CurrentClipRect;
p.PopLocalClipArea(); //temp
p.PushContaingBlock(this);
int j = p.LatePaintItemCount;
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
for (int i = 0; i < j; ++i)
{
CssBox box = p.GetLatePaintItem(i);
if (box.CssDisplay == Css.CssDisplay.None)
{
continue;
}
p.SetCanvasOrigin(ox + (int)box.LocalX, oy + (int)box.LocalY);
box.Paint(p);
p.SetCanvasOrigin(ox, oy);
}
p.PopContainingBlock();
p.PushLocalClipArea(latestClipRect.Width, latestClipRect.Height);//push back
}
p.ExitCurrentLatePaintContext();
//must! ,
if (hasPrevClip)
{
p.PopLocalClipArea();
}
#if DEBUG
p.dbugExitContext();
#endif
}
protected virtual void PaintImp(PaintVisitor p)
{
#if DEBUG
//if (__aa_dbugId == 6)
//{
//}
//if (this.dbugMark2 == 10 || this.dbugMark2 == 12)
//{
//}
#endif
Css.CssDisplay display = this.CssDisplay;
//
if (display == Css.CssDisplay.TableCell &&
this.EmptyCells == Css.CssEmptyCell.Hide &&
this.IsSpaceOrEmpty)
{
return;
}
#if DEBUG
p.dbugEnterNewContext(this, PaintVisitor.PaintVisitorContextName.Init);
#endif
Color prevBgColorHint = p.CurrentSolidBackgroundColorHint;
//-----------------------------------------------
bool hasPrevClip = false;
RectangleF prevClip = RectangleF.Empty;
p.EnterNewLatePaintContext();
//---------------------------------------------
//if (display != Css.CssDisplay.Inline ||
// this.Position == Css.CssPosition.Absolute ||
// this.Position == Css.CssPosition.Fixed)
if (_renderBGAndBorder)
{
RectangleF bounds = new RectangleF(0, 0, this.VisualWidth, this.VisualHeight);
PaintBackground(p, bounds, true, true);
if (this.HasSomeVisibleBorder)
{
p.PaintBorders(this, bounds, true, true);
}
#if DEBUG
dbugPaint(p, bounds);
#endif
}
//---------------------------------------------
if (this.LineBoxCount > 0)
{
float viewport_top = p.ViewportTop;
float viewport_bottom = p.ViewportBottom;
int drawState = 0;
var c_lineNode = _clientLineBoxes.First;
while (c_lineNode != null)
{
CssLineBox line = c_lineNode.Value;
if (line.CachedLineBottom >= viewport_top &&
line.CachedLineTop <= viewport_bottom)
{
Rectangle currentClipRect = p.CurrentClipRect;
drawState = 1;//drawing in viewport area
#if DEBUG
//System.Diagnostics.Debug.WriteLine("clip_rect:" + currentClipRect);
dbugCounter.dbugLinePaintCount++;
#endif
int cX = p.CanvasOriginX;
int cy = p.CanvasOriginY;
int newCy = cy + (int)line.CachedLineTop;
if (newCy <= (cy + currentClipRect.Bottom) &&
newCy + line.CacheLineHeight >= (cy + currentClipRect.Top))
{
p.SetCanvasOrigin(cX, newCy);
//1.
line.PaintBackgroundAndBorder(p);
SelectionSegment selSegment = line.SelectionSegment;
if (selSegment != null)
{
switch (selSegment.Kind)
{
case SelectionSegmentKind.FullLine:
{
Color prevColor2 = p.CurrentSolidBackgroundColorHint; //save2
p.CurrentSolidBackgroundColorHint = p.CssBoxSelectionColor;
selSegment.PaintSelection(p, line);
line.PaintRuns(p);
p.CurrentSolidBackgroundColorHint = prevColor2; //restore2
}
break;
case SelectionSegmentKind.PartialBegin:
case SelectionSegmentKind.SingleLine:
case SelectionSegmentKind.PartialEnd:
{
//TODO: review here again***
//partial line
//[A]
line.PaintRuns(p); //normal line
//-----
//[B]
//selection part with clip rect
Color prevColor2 = p.CurrentSolidBackgroundColorHint; //save2
//p.CurrentSolidBackgroundColorHint = prevBgColorHint;
int xpos = selSegment.BeginAtPx;
int w = selSegment.WidthPx;
Rectangle clipRect = p.CurrentClipRect;
p.SetClipArea(xpos, 0, w, (int)line.CacheLineHeight);
selSegment.PaintSelection(p, line);
p.CurrentSolidBackgroundColorHint = p.CssBoxSelectionColor;
line.PaintRuns(p);
p.SetClipArea(clipRect.X, clipRect.Top, clipRect.Width, clipRect.Height); //restore
p.CurrentSolidBackgroundColorHint = prevColor2; //restore2
}
break;
}
}
else
{
//2.
line.PaintRuns(p);
}
//3.
line.PaintDecoration(p);
#if DEBUG
line.dbugPaintRuns(p);
#endif
p.SetCanvasOrigin(cX, cy);//back
}
}
else if (drawState == 1)
{
//outof viewport -> break
break;
}
//----------------------------------------
c_lineNode = c_lineNode.Next;
}
}
else
{
if (this.HasContainingBlockProperty)
{
p.PushContaingBlock(this);
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
var node = _aa_boxes.GetFirstLinkedNode();
while (node != null)
{
CssBox b = node.Value;
if (b.CssDisplay == Css.CssDisplay.None || b.IsAddedToAbsoluteLayer)
{
node = node.Next;
continue;
}
else if (b.IsOutOfFlowBox)
{
//
p.AddToLatePaintList(b);
node = node.Next;
continue;
}
//move to left-top of client box
p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
if (b._decorator != null)
{
b._decorator.Paint(b, p);
}
if (b.HasClipArea)
{
if (p.PushLocalClipArea(b.VisualWidth, b.VisualHeight))
{
CssBox.Paint(b, p);
p.PopLocalClipArea();
}
}
else
{
CssBox.Paint(b, p);
}
node = node.Next;
}
p.SetCanvasOrigin(ox, oy);
p.PopContainingBlock();
}
else
{
//if not
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
var node = _aa_boxes.GetFirstLinkedNode();
while (node != null)
{
CssBox b = node.Value;
if (b.CssDisplay == Css.CssDisplay.None || b.IsAddedToAbsoluteLayer)
{
node = node.Next;
continue;
}
p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
CssBox.Paint(b, p);
node = node.Next;
}
p.SetCanvasOrigin(ox, oy);
}
}
//------------------------------------------
//debug
//var clientLeft = this.ClientLeft;
//g.DrawRectangle(Pens.GreenYellow, 0, 0, 5, 10);
//g.DrawRectangle(Pens.HotPink, this.ClientRight - 5, 0, 5, 10);
//------------------------------------------
if (this.HasAbsoluteLayer)
{
p.PushContaingBlock(this);
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
int j = _absPosLayer.Count;
for (int i = 0; i < j; ++i)
{
CssBox b = _absPosLayer.GetBox(i);
if (b.CssDisplay == Css.CssDisplay.None)
{
continue;
}
p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
CssBox.Paint(b, p);
}
//var node = _absPosLayer.GetFirstLinkedNode();
//while (node != null)
//{
// CssBox b = node.Value;
// if (b.CssDisplay == Css.CssDisplay.None)
// {
// node = node.Next;
// continue;
// }
// p.SetCanvasOrigin(ox + (int)b.LocalX, oy + (int)b.LocalY);
// b.Paint(p);
// node = node.Next;
//}
p.SetCanvasOrigin(ox, oy);
p.PopContainingBlock();
}
if (p.LatePaintItemCount > 0)
{
//late paint -> floatBox
Rectangle latestClipRect = p.CurrentClipRect;
p.PopLocalClipArea(); //temp
p.PushContaingBlock(this);
int j = p.LatePaintItemCount;
int ox = p.CanvasOriginX;
int oy = p.CanvasOriginY;
for (int i = 0; i < j; ++i)
{
CssBox box = p.GetLatePaintItem(i);
if (box.CssDisplay == Css.CssDisplay.None)
{
continue;
}
p.SetCanvasOrigin(ox + (int)box.LocalX, oy + (int)box.LocalY);
CssBox.Paint(box, p);
p.SetCanvasOrigin(ox, oy);
}
p.PopContainingBlock();
p.PushLocalClipArea(latestClipRect.Width, latestClipRect.Height);//push back
}
p.ExitCurrentLatePaintContext();
//must! ,
if (hasPrevClip)
{
p.PopLocalClipArea();
}
p.CurrentSolidBackgroundColorHint = prevBgColorHint;
#if DEBUG
p.dbugExitContext();
#endif
}
internal void AddLineBox(CssLineBox linebox)
{
linebox.linkedNode = _clientLineBoxes.AddLast(linebox);
}
internal static void SetHostLine(CssRun run, CssLineBox hostline)
{
run._hostline = hostline;
}