static int EvaluateFontAndTextColor(DrawBoard d, RunStyle runstyle)
{
RequestFont font = runstyle.ReqFont;
Color color = runstyle.FontColor;
RequestFont currentTextFont = d.CurrentFont;
Color currentTextColor = d.CurrentTextColor;
if (font != null && font != currentTextFont)
{
if (currentTextColor != color)
{
return(DIFF_FONT_DIFF_TEXT_COLOR);
}
else
{
return(DIFF_FONT_SAME_TEXT_COLOR);
}
}
else
{
if (currentTextColor != color)
{
return(SAME_FONT_DIFF_TEXT_COLOR);
}
else
{
return(SAME_FONT_SAME_TEXT_COLOR);
}
}
}
public SolidRun(char[] copyBuffer, RunStyle style)
: base(style)
{
//check line break?
_mybuffer = copyBuffer;
UpdateRunWidth();
}
public override void Draw(DrawBoard d, UpdateArea updateArea)
{
int bWidth = this.Width;
int bHeight = this.Height;
#if DEBUG
//canvas.dbug_DrawCrossRect(Color.Red, new Rectangle(0, 0, bWidth, bHeight));
//canvas.DrawRectangle(Color.Red, 0, 0, bWidth, bHeight);
#endif
RunStyle style = this.RunStyle;//must
//set style to the canvas
switch (EvaluateFontAndTextColor(d, style))
{
case DIFF_FONT_DIFF_TEXT_COLOR:
{
RequestFont prevFont = d.CurrentFont;
Color prevColor = d.CurrentTextColor;
d.CurrentFont = style.ReqFont;
d.CurrentTextColor = style.FontColor;
DrawText(d);
d.CurrentFont = prevFont;
d.CurrentTextColor = prevColor;
}
break;
case DIFF_FONT_SAME_TEXT_COLOR:
{
RequestFont prevFont = d.CurrentFont;
d.CurrentFont = style.ReqFont;
DrawText(d);
d.CurrentFont = prevFont;
}
break;
case SAME_FONT_DIFF_TEXT_COLOR:
{
Color prevColor = d.CurrentTextColor;
d.CurrentTextColor = style.FontColor;
DrawText(d);
d.CurrentTextColor = prevColor;
}
break;
default:
{
DrawText(d);
}
break;
}
}
public TextFlowLayer(ITextFlowLayerOwner owner, RunStyle defaultSpanStyle)
{
_owner = owner;
//start with single line per layer
//and can be changed to multiline
DefaultRunStyle = defaultSpanStyle;
//add default lines
_lines.Add(new TextLineBox(this));
VisualLineOverlapped = true;
}
public TextRun(RunStyle runstyle, char[] copyBuffer)
: base(runstyle)
{
#if DEBUG
if (copyBuffer.Length == 0)
{
}
#endif
//we need font info (in style) for evaluating the size fo this span
//without font info we can't measure the size of this span
SetNewContent(copyBuffer);
UpdateRunWidth();
}
public override void SetStyle(RunStyle runstyle)
{
//TODO: review this again
//update style may affect the 'visual' layout of the span
//the span may expand large or shrink down
//so we invalidate graphics area pre and post
//TODO: review here***
this.InvalidateGraphics();
base.SetStyle(runstyle);
this.InvalidateGraphics();
UpdateRunWidth();
}
public override void UpdateRunWidth()
{
//***
var textBufferSpan = new Typography.Text.TextBufferSpan(_mybuffer);
//TODO: review here,
//1. if mybuffer lenght is not changed,we don't need to alloc new array?
_outputUserCharAdvances = new int[_mybuffer.Length];
if (_renderVxFormattedString != null)
{
_renderVxFormattedString.Dispose();
_renderVxFormattedString = null;
}
var measureResult = new TextSpanMeasureResult();
measureResult.outputXAdvances = _outputUserCharAdvances;
if (_content_unparsed)
{
//parse the content first
if (_lineSegs == null)
{
_lineSegs = new TextPrinterLineSegmentList <TextPrinterLineSegment>();
}
_lineSegs.Clear();
//
if (s_wordVistor == null)
{
s_wordVistor = new TextPrinterWordVisitor();
}
s_wordVistor.SetLineSegmentList(_lineSegs);
RunStyle.BreakToLineSegments(textBufferSpan, s_wordVistor);
s_wordVistor.SetLineSegmentList(null);
//BreakToLineSegs(textBufferSpan);
}
_content_unparsed = false;
RunStyle.CalculateUserCharGlyphAdvancePos(textBufferSpan, _lineSegs, ref measureResult);
SetSize(measureResult.outputTotalW, measureResult.lineHeight);
InvalidateGraphics();
}
public SolidRun(string str, RunStyle style)
: base(style)
{
if (str != null && str.Length > 0)
{
_mybuffer = str.ToCharArray();
if (_mybuffer.Length == 1 && _mybuffer[0] == '\n')
{
//this.IsLineBreak = true;
throw new NotSupportedException();
}
UpdateRunWidth();
}
else
{
throw new Exception("string must be null or zero length");
}
}
public TextFlowRenderBox(int width, int height, bool isMultiLine)
: base(width, height)
{
var defaultRunStyle = new RunStyle();
defaultRunStyle.FontColor = Color.Black; //set default
defaultRunStyle.ReqFont = GlobalRootGraphic.CurrentRootGfx.DefaultTextEditFontInfo; //TODO: review here
_textLayer = new TextFlowLayer(this, defaultRunStyle); //presentation
_textLayer.ContentSizeChanged += (s, e) => OnTextContentSizeChanged();
//
_editSession = new TextFlowEditSession(_textLayer);//controller
_isMultiLine = isMultiLine;
RenderBackground = RenderSelectionRange = RenderMarkers = true;
//
MayHasViewport = true;
BackgroundColor = Color.White;// Color.Transparent;
}
public void SetDefaultRunStyle(RunStyle runStyle)
{
DefaultRunStyle = runStyle;
}
//
public override void Draw(DrawBoard d, UpdateArea updateArea)
{
if (_externalCustomDraw != null)
{
_externalCustomDraw(this, d, updateArea);
return;
}
else if (ExternalRenderElement != null)
{
RenderElement.Render(ExternalRenderElement, d, updateArea);
return;
}
int bWidth = this.Width;
int bHeight = this.Height;
//1. bg, yellow for test**
d.FillRectangle(Color.Yellow, 0, 0, bWidth, bHeight);
//if (!this.HasStyle)
//{
// canvas.DrawText(_mybuffer, new Rectangle(0, 0, bWidth, bHeight), 0);
//}
//else
//{
//TODO: review here, we don't need to do this
RunStyle style = this.RunStyle;
switch (EvaluateFontAndTextColor(d, style))
{
case DIFF_FONT_SAME_TEXT_COLOR:
{
var prevFont = d.CurrentFont;
d.CurrentFont = style.ReqFont;
d.DrawText(_mybuffer,
new Rectangle(0, 0, bWidth, bHeight),
style.ContentHAlign);
d.CurrentFont = prevFont;
}
break;
case DIFF_FONT_DIFF_TEXT_COLOR:
{
var prevFont = d.CurrentFont;
var prevColor = d.CurrentTextColor;
d.CurrentFont = style.ReqFont;
d.CurrentTextColor = style.FontColor;
d.DrawText(_mybuffer,
new Rectangle(0, 0, bWidth, bHeight),
style.ContentHAlign);
d.CurrentFont = prevFont;
d.CurrentTextColor = prevColor;
}
break;
case SAME_FONT_DIFF_TEXT_COLOR:
{
var prevColor = d.CurrentTextColor;
d.DrawText(_mybuffer,
new Rectangle(0, 0, bWidth, bHeight),
style.ContentHAlign);
d.CurrentTextColor = prevColor;
}
break;
default:
{
d.DrawText(_mybuffer,
new Rectangle(0, 0, bWidth, bHeight),
style.ContentHAlign);
}
break;
}
//}
}
internal Run(RunStyle runStyle)
{
_runStyle = runStyle;
_width = _height = 10;
}
