/// <summary>
/// Draw the entity.
/// </summary>
/// <param name="spriteBatch">Sprite batch to draw on.</param>
/// <param name="phase">The phase we are currently drawing.</param>
override protected void DrawEntity(SpriteBatch spriteBatch, DrawPhase phase)
{
// call base draw function to draw the panel part
base.DrawEntity(spriteBatch, phase);
// get which paragraph we currently show - real or placeholder
bool showPlaceholder = !(IsFocused || _value.Length > 0);
Paragraph currParagraph = showPlaceholder ? PlaceholderParagraph : TextParagraph;
// get actual processed string
_actualDisplayText = PrepareInputTextForDisplay(showPlaceholder, IsFocused);
// for multiline only - handle scrollbar visibility and max
if (_multiLine && (_actualDisplayText != null) && (_destRectInternal.Height > 0))
{
// get how many lines can fit in the textbox and how many lines display text actually have
int linesFit = _destRectInternal.Height / (int)(System.Math.Max(currParagraph.LineHeightY(), 1));
int linesInText = _actualDisplayText.Split('\n').Length;
// if there are more lines than can fit, show scrollbar and manage scrolling:
if (linesInText > linesFit)
{
// fix paragraph width to leave room for the scrollbar
float prevWidth = currParagraph.Size.X;
currParagraph.Size = new Vector2(_destRectInternal.Width / GlobalScale - 20, 0);
if (currParagraph.Size.X != prevWidth)
{
// update size and re-calculate lines in text
_actualDisplayText = PrepareInputTextForDisplay(showPlaceholder, IsFocused);
linesInText = _actualDisplayText.Split('\n').Length;
}
// set scrollbar max and steps
_scrollbar.Max = (uint)System.Math.Max(linesInText - linesFit, 2);
_scrollbar.StepsCount = _scrollbar.Max;
_scrollbar.Visible = true;
// update text to fit scrollbar. first, rebuild the text with just the visible segment
List <string> lines = new List <string>(_actualDisplayText.Split('\n'));
int from = System.Math.Min(_scrollbar.Value, lines.Count - 1);
int size = System.Math.Min(linesFit, lines.Count - from);
lines = lines.GetRange(from, size);
_actualDisplayText = string.Join("\n", lines);
currParagraph.Text = _actualDisplayText;
}
// if no need for scrollbar make it invisible
else
{
currParagraph.Size = Vector2.Zero;
_scrollbar.Visible = false;
}
}
// set placeholder and main text visibility based on current value
TextParagraph.Visible = !showPlaceholder;
PlaceholderParagraph.Visible = showPlaceholder;
}
/// <summary>
/// When list is resized (also called on init), create the labels to show item values and init graphical stuff.
/// </summary>
protected virtual void OnResize()
{
// if not visible, skip
if (!IsVisible())
{
_hadResizeWhileNotVisible = true;
return;
}
// clear the _hadResizeWhileNotVisible flag
_hadResizeWhileNotVisible = false;
// remove all children before re-creating them
ClearChildren();
// remove previous paragraphs list
_paragraphs.Clear();
// make sure destination rect is up-to-date
UpdateDestinationRects();
// calculate paragraphs quantity
int i = 0;
while (true)
{
// create and add new paragraph
Paragraph paragraph = _userinterface.DefaultParagraph(".", Anchor.Auto);
paragraph.PromiscuousClicksMode = true;
paragraph.WrapWords = false;
paragraph.UpdateStyle(DefaultParagraphStyle);
paragraph.Scale = paragraph.Scale * ItemsScale;
paragraph.SpaceAfter = paragraph.SpaceAfter + new Vector2(0, ExtraSpaceBetweenLines - 2);
paragraph.ExtraMargin.Y = ExtraSpaceBetweenLines / 2 + 3;
paragraph.AttachedData = new ParagraphData(this, i++);
paragraph.UseActualSizeForCollision = false;
paragraph.Size = new Vector2(0, (float)paragraph.LineHeightY() + ExtraSpaceBetweenLines);
paragraph.BackgroundColorPadding = new Point((int)Padding.X, 5);
paragraph.BackgroundColorUseBoxSize = true;
paragraph._hiddenInternalEntity = true;
paragraph.PropagateEventsTo(this);
AddChild(paragraph);
// call the callback whenever a new paragraph is created
OnCreatedListParagraph(paragraph);
// add to paragraphs list
_paragraphs.Add(paragraph);
// add callback to selection
paragraph.OnClick += (Entity entity) =>
{
ParagraphData data = (ParagraphData)entity.AttachedData;
if (!data.list.LockSelection)
{
data.list.Select(data.relativeIndex, true);
}
};
// to calculate paragraph actual bottom
paragraph.UpdateDestinationRects();
// if out of list bounderies remove this paragraph and stop
if ((paragraph.GetActualDestRect().Bottom > _destRect.Bottom - _scaledPadding.Y) || i > _list.Count)
{
RemoveChild(paragraph);
_paragraphs.Remove(paragraph);
break;
}
}
// add scrollbar last, but only if needed
if (_paragraphs.Count > 0 && _paragraphs.Count < _list.Count)
{
// add scrollbar to list
AddChild(_scrollbar, false);
// calc max scroll value
_scrollbar.Max = (uint)(_list.Count - _paragraphs.Count);
if (_scrollbar.Max < 2)
{
_scrollbar.Max = 2;
}
_scrollbar.StepsCount = _scrollbar.Max;
_scrollbar.Visible = true;
}
// if no scrollbar is needed, hide it
else
{
_scrollbar.Visible = false;
if (_scrollbar.Value > 0)
{
_scrollbar.Value = 0;
}
}
}
/// <summary>
/// Draw the entity.
/// </summary>
/// <param name="spriteBatch">Sprite batch to draw on.</param>
/// <param name="phase">The phase we are currently drawing.</param>
override protected void DrawEntity(SpriteBatch spriteBatch, DrawPhase phase)
{
// call base draw function to draw the panel part
base.DrawEntity(spriteBatch, phase);
// get which paragraph we currently show - real or placeholder
bool showPlaceholder = !(IsFocused || _value.Length > 0);
Paragraph currParagraph = showPlaceholder ? PlaceholderParagraph : TextParagraph;
// get actual processed string
_actualDisplayText = PrepareInputTextForDisplay(showPlaceholder, false);
// for multiline only - handle scrollbar visibility and max
if (_multiLine && (_actualDisplayText != null) && (_destRectInternal.Height > 0))
{
// get how many lines can fit in the textbox and how many lines display text actually have
int linesFit = _destRectInternal.Height / (int)(System.Math.Max(currParagraph.LineHeightY(), 1));
var linesfull = _actualDisplayText.Split('\n');
int linesInText = linesfull.Length;
if (GrowX)
{
var maxlen = 0.0f;
if (TextParagraph.WrapWords == false)
{
foreach (var line in linesfull)
{
var len = TextParagraph.CurrentFont.MeasureString(line);
if (len.X > maxlen)
{
maxlen = len.X;
}
}
}
if ((int)maxlen != _destRectInternal.Width) //do I want to round or something?
{
var diff = Size.X - _destRectInternal.Width;
Size = new Vector2(maxlen + diff, Size.Y);
}
}
// if there are more lines than can fit, show scrollbar and manage scrolling:
if (linesInText >= 1 && linesFit != linesInText)
{
int changelines = linesInText - linesFit;
Size = new Vector2(Size.X, (float)(Size.Y + changelines * currParagraph.LineHeightY()));
/*
* // fix paragraph width to leave room for the scrollbar
* float prevWidth = currParagraph.Size.X;
* currParagraph.Size = new Vector2(_destRectInternal.Width / GlobalScale - 20, 0);
* if (currParagraph.Size.X != prevWidth)
* {
* // update size and re-calculate lines in text
* _actualDisplayText = PrepareInputTextForDisplay(showPlaceholder, IsFocused);
* linesInText = _actualDisplayText.Split('\n').Length;
* }
*
* // set scrollbar max and steps
* _scrollbar.Max = (uint)System.Math.Max(linesInText - linesFit, 2);
* _scrollbar.StepsCount = _scrollbar.Max;
* _scrollbar.Visible = true;
*
* // update text to fit scrollbar. first, rebuild the text with just the visible segment
* List<string> lines = new List<string>(_actualDisplayText.Split('\n'));
* int from = System.Math.Min(_scrollbar.Value, lines.Count - 1);
* int size = System.Math.Min(linesFit, lines.Count - from);
* lines = lines.GetRange(from, size);
* _actualDisplayText = string.Join("\n", lines);
* currParagraph.Text = _actualDisplayText;
*/
}
// if no need for scrollbar make it invisible
else
{
currParagraph.Size = Vector2.Zero;
_scrollbar.Visible = false;
}
}
// set placeholder and main text visibility based on current value
TextParagraph.Visible = !showPlaceholder;
PlaceholderParagraph.Visible = showPlaceholder;
}
