/// <summary>
/// When the text / scroll / highlight changes we need to
/// re-compute how we are going to draw this text field
/// </summary>
public void ComputeDrawingCommands()
{
m_DrawCmds.Clear();
m_DrawDirty = false;
/**
* Split the text into lines using manual lines
* breaks and word wrap
*/
string txt = null;
if (m_Password)
{
/** Use * instead **/
txt = "";
for (int i = 0; i < m_SBuilder.Length; i++)
{
txt += "*";
}
}
else
{
txt = CurrentTextParsed;
}
var lineWidth = m_Width - (TextMargin.Left + TextMargin.Height);
m_LineHeight = TextStyle.MeasureString("W").Y + TextStyle.LineHeightModifier;
var bbCommands = BBCodeEnabled ? CodeParser.Commands : new List <BBCodeCommand>();
var bbIndex = 0;
m_Lines.Clear();
//txt = txt.Replace("\r", "");
var words = txt.Split(' ').ToList();
var spaceWidth = TextStyle.MeasureString(" ").X;
/**
* Modify the array to make manual line breaks their own segment
* in the array
*/
var newWordsArray = TextRenderer.ExtractLineBreaks(words);
TextRenderer.CalculateLines(m_Lines, newWordsArray, TextStyle, lineWidth, spaceWidth, new Vector2(), m_LineHeight);
var topLeft = new Vector2(TextMargin.Left, TextMargin.Top);
var position = topLeft;
var txtScale = TextStyle.Scale * _Scale;
m_NumVisibleLines = Math.Max(1, (int)Math.Floor(m_Height / m_LineHeight));
/** Make sure the current vscroll is valid **/
VerticalScrollPosition = m_VScroll;
if (m_Slider != null)
{
m_Slider.MaxValue = Math.Max(0, m_Lines.Count - m_NumVisibleLines);
m_Slider.Value = VerticalScrollPosition;
}
var bbColorStack = new Stack <Color>();
var lastColor = TextStyle.Color;
var yPosition = topLeft.Y;
var numLinesAdded = 0;
var shadowApplied = false;
for (var i = 0; i < m_Lines.Count - m_VScroll; i++)
{
var line = m_Lines[m_VScroll + i];
var segments = CalculateSegments(line, bbCommands, ref bbIndex);
var xPosition = topLeft.X;
segments.ForEach(x => x.Size = TextStyle.MeasureString(x.Text));
var thisLineWidth = segments.Sum(x => x.Size.X);
/** Alignment **/
if (Alignment == TextAlignment.Center)
{
xPosition += (int)Math.Round((lineWidth - thisLineWidth) / 2);
}
line.LineStartX = (int)xPosition;
foreach (var segment in segments)
{
var segmentSize = segment.Size;
var segmentPosition = LocalPoint(new Vector2(xPosition, yPosition));
if (segment.Selected)
{
m_DrawCmds.Add(new TextDrawCmd_SelectionBox
{
BlendColor = TextStyle.SelectionBoxColor,
Texture = TextureGenerator.GetPxWhite(GameFacade.GraphicsDevice),
Position = segmentPosition,
Scale = new Vector2(segmentSize.X, m_LineHeight) * _Scale
});
}
if (segment.Text.Length > 0)
{
m_DrawCmds.Add(new TextDrawCmd_Text
{
Selected = segment.Selected,
Text = segment.Text,
Style = TextStyle,
Position = segmentPosition,
Scale = txtScale
});
xPosition += segmentSize.X;
}
if (segment.StartCommand != null)
{
var cmd = segment.StartCommand;
switch (cmd.Type)
{
case BBCodeCommandType.color:
if (cmd.Close)
{
//pop a color off our stack
if (bbColorStack.Count > 0)
{
lastColor = bbColorStack.Pop();
m_DrawCmds.Add(new TextDrawCmd_Color(TextStyle, lastColor));
}
}
else
{
bbColorStack.Push(lastColor);
lastColor = cmd.ParseColor();
m_DrawCmds.Add(new TextDrawCmd_Color(TextStyle, lastColor));
}
break;
case BBCodeCommandType.s:
if (cmd.Close)
{
m_DrawCmds.Add(new TextDrawCmd_Shadow(TextStyle, false));
shadowApplied = false;
}
else
{
m_DrawCmds.Add(new TextDrawCmd_Shadow(TextStyle, true));
shadowApplied = true;
}
break;
case BBCodeCommandType.emoji:
if (segment.BBCatchup)
{
break;
}
m_DrawCmds.Add(new TextDrawCmd_Emoji(TextStyle, cmd.Parameter, LocalPoint(new Vector2(xPosition, yPosition)), _Scale));
break;
}
}
}
yPosition += m_LineHeight;
position.Y += m_LineHeight;
numLinesAdded++;
if (numLinesAdded >= m_NumVisibleLines)
{
break;
}
}
if (shadowApplied)
{
m_DrawCmds.Add(new TextDrawCmd_Shadow(TextStyle, false));
}
while (bbColorStack.Count > 0)
{
lastColor = bbColorStack.Pop();
m_DrawCmds.Add(new TextDrawCmd_Color(TextStyle, lastColor));
}
/** No cursor in read only mode **/
if (m_IsReadOnly)
{
m_DrawCmds.ForEach(x => x.Init());
return;
}
var start = Control_GetSelectionStart();
var cursorLine = GetLineForIndex(start);
if (cursorLine != null && cursorLine.LineNumber >= m_VScroll && cursorLine.LineNumber < m_VScroll + m_NumVisibleLines)
{
var prefix = start - cursorLine.StartIndex;
var cursorPosition = new Vector2(cursorLine.LineStartX, topLeft.Y + ((cursorLine.LineNumber - m_VScroll) * m_LineHeight));
if (prefix > 0)
{
if (prefix > cursorLine.Text.Length - 1)
{
cursorPosition.X += cursorLine.LineWidth;
}
else
{
cursorPosition.X += TextStyle.MeasureString(cursorLine.Text.Substring(0, prefix)).X;
}
}
m_DrawCmds.Add(new TextDrawCmd_Cursor
{
Scale = new Vector2(_Scale.X, m_LineHeight * _Scale.Y),
Position = LocalPoint(cursorPosition),
Texture = TextureGenerator.GetPxWhite(GameFacade.GraphicsDevice),
Color = TextStyle.CursorColor
});
}
m_DrawCmds.ForEach(x => x.Init());
}
/// <summary>
/// When the text / scroll / highlight changes we need to
/// re-compute how we are going to draw this text field
/// </summary>
public void ComputeDrawingCommands()
{
m_DrawCmds.Clear();
m_DrawDirty = false;
/**
* Split the text into lines using manual lines
* breaks and word wrap
*/
var txt = m_SBuilder.ToString();
var lineWidth = m_Width - (TextMargin.Left + TextMargin.Height);
m_LineHeight = TextStyle.MeasureString("W").Y;
m_Lines.Clear();
var words = txt.Split(' ').ToList();
var spaceWidth = TextStyle.MeasureString(" ").X;
/**
* Modify the array to make manual line breaks their own segment
* in the array
*/
var newWordsArray = TextRenderer.ExtractLineBreaks(words);
TextRenderer.CalculateLines(m_Lines, newWordsArray, TextStyle, lineWidth, spaceWidth, new Vector2(), m_LineHeight);
var topLeft = new Vector2(TextMargin.Left, TextMargin.Top);
var position = topLeft;
var txtScale = TextStyle.Scale * _Scale;
m_NumVisibleLines = (int)Math.Floor(m_Height / m_LineHeight);
/** Make sure the current vscroll is valid **/
VerticalScrollPosition = m_VScroll;
if (m_Slider != null)
{
m_Slider.MaxValue = Math.Max(0, m_Lines.Count - m_NumVisibleLines);
m_Slider.Value = VerticalScrollPosition;
}
var yPosition = topLeft.Y;
var numLinesAdded = 0;
for (var i = 0; i < m_Lines.Count - m_VScroll; i++)
{
var line = m_Lines[m_VScroll + i];
var segments = CalculateSegments(line);
var xPosition = topLeft.X;
segments.ForEach(x => x.Size = TextStyle.MeasureString(x.Text));
var thisLineWidth = segments.Sum(x => x.Size.X);
/** Alignment **/
if (Alignment == TextAlignment.Center)
{
xPosition += (int)Math.Round((lineWidth - thisLineWidth) / 2);
}
line.LineStartX = (int)xPosition;
foreach (var segment in segments)
{
var segmentSize = segment.Size;
var segmentPosition = LocalPoint(new Vector2(xPosition, yPosition));
if (segment.Selected)
{
m_DrawCmds.Add(new TextDrawCmd_SelectionBox
{
BlendColor = new Color(0xFF, 0xFF, 0xFF, 200),
Texture = TextureUtils.TextureFromColor(GameFacade.GraphicsDevice, TextStyle.SelectionBoxColor),
Position = segmentPosition,
Scale = new Vector2(segmentSize.X, m_LineHeight) * _Scale
});
}
m_DrawCmds.Add(new TextDrawCmd_Text
{
Selected = segment.Selected,
Text = segment.Text,
Style = TextStyle,
Position = segmentPosition,
Scale = txtScale
});
xPosition += segmentSize.X;
}
yPosition += m_LineHeight;
position.Y += m_LineHeight;
numLinesAdded++;
if (numLinesAdded >= m_NumVisibleLines)
{
break;
}
}
/** No cursor in read only mode **/
if (m_IsReadOnly)
{
m_DrawCmds.ForEach(x => x.Init());
return;
}
var start = Control_GetSelectionStart();
var cursorLine = GetLineForIndex(start);
if (cursorLine != null && cursorLine.LineNumber >= m_VScroll && cursorLine.LineNumber < m_VScroll + m_NumVisibleLines)
{
var prefix = start - cursorLine.StartIndex;
var cursorPosition = new Vector2(cursorLine.LineStartX, topLeft.Y + ((cursorLine.LineNumber - m_VScroll) * m_LineHeight));
if (prefix > 0)
{
if (prefix > cursorLine.Text.Length - 1)
{
cursorPosition.X += cursorLine.LineWidth;
}
else
{
cursorPosition.X += TextStyle.MeasureString(cursorLine.Text.Substring(0, prefix)).X;
}
}
m_DrawCmds.Add(new TextDrawCmd_Cursor
{
Scale = new Vector2(_Scale.X, m_LineHeight * _Scale.Y),
Position = LocalPoint(cursorPosition),
Texture = TextureUtils.TextureFromColor(GameFacade.GraphicsDevice, TextStyle.CursorColor)
});
}
m_DrawCmds.ForEach(x => x.Init());
}