protected bool CalculateFadeBorder(TextScrollEnum scrollMode, RectangleF textBox, HorizontalTextAlignEnum horzAlign, out Vector4 fadeBorder)
{
fadeBorder = new Vector4(0.0001f, 0.0001f, 0.0001f, 0.0001f);
bool dofade = false;
if (scrollMode == TextScrollEnum.Left || scrollMode == TextScrollEnum.Right)
{
fadeBorder.X = FADE_SIZE; // Fade on left edge
fadeBorder.Z = FADE_SIZE; // Fade on right edge
dofade = true;
}
else if (_lastTextSize.Width > textBox.Width)
{
if (horzAlign == HorizontalTextAlignEnum.Right || horzAlign == HorizontalTextAlignEnum.Center)
{
fadeBorder.X = FADE_SIZE; // Fade on left edge
}
if (horzAlign == HorizontalTextAlignEnum.Left || horzAlign == HorizontalTextAlignEnum.Center)
{
fadeBorder.Z = FADE_SIZE; // Fade on right edge
}
dofade = true;
}
if (scrollMode == TextScrollEnum.Up || scrollMode == TextScrollEnum.Down)
{
fadeBorder.Y = FADE_SIZE; // Fade on top edge
fadeBorder.W = FADE_SIZE; // Fade on bottom edge
dofade = true;
}
else if (_lastTextSize.Height > textBox.Height + _fontSize / 4)
{
fadeBorder.W = FADE_SIZE; // Fade on bottom edge
dofade = true;
}
return(dofade);
}
protected bool CalculateFadeBorder(TextScrollEnum scrollMode, RectangleF textBox, HorizontalTextAlignEnum horzAlign, out Vector4 fadeBorder)
{
fadeBorder = new Vector4(0.0001f, 0.0001f, 0.0001f, 0.0001f);
bool dofade = false;
if (scrollMode == TextScrollEnum.Left || scrollMode == TextScrollEnum.Right)
{
fadeBorder.X = FADE_SIZE; // Fade on left edge
fadeBorder.Z = FADE_SIZE; // Fade on right edge
dofade = true;
}
else if (_lastTextSize.Width > textBox.Width)
{
if (horzAlign == HorizontalTextAlignEnum.Right || horzAlign == HorizontalTextAlignEnum.Center)
fadeBorder.X = FADE_SIZE; // Fade on left edge
if (horzAlign == HorizontalTextAlignEnum.Left || horzAlign == HorizontalTextAlignEnum.Center)
fadeBorder.Z = FADE_SIZE; // Fade on right edge
dofade = true;
}
if (scrollMode == TextScrollEnum.Up || scrollMode == TextScrollEnum.Down)
{
fadeBorder.Y = FADE_SIZE; // Fade on top edge
fadeBorder.W = FADE_SIZE; // Fade on bottom edge
dofade = true;
}
else if (_lastTextSize.Height > textBox.Height + _fontSize / 4)
{
fadeBorder.W = FADE_SIZE; // Fade on bottom edge
dofade = true;
}
return dofade;
}
protected TextScrollEnum UpdateScrollPosition(RectangleF textBox, TextScrollEnum mode, float speed, float scrollDelay)
{
if ((SkinContext.FrameRenderingStartTime - _scrollInitialized).TotalSeconds < scrollDelay)
return TextScrollEnum.None;
float dif = speed * (float) SkinContext.FrameRenderingStartTime.Subtract(_lastTimeUsed).TotalSeconds;
if (mode == TextScrollEnum.Auto)
{
if (_lastWrap && _lastTextSize.Height > textBox.Height)
mode = TextScrollEnum.Up;
else if (_textLines.Length == 1 && _lastTextSize.Width > textBox.Width)
mode = TextScrollEnum.Left;
else
return TextScrollEnum.None;
}
switch (mode)
{
case TextScrollEnum.Left:
_scrollPos.X -= dif;
if (_scrollPos.X + _lastTextSize.Width < textBox.Width / 2.0f)
{
_scrollWrapOffset.X = _scrollPos.X;
_scrollPos.X = textBox.Width + 4;
_scrollWrapOffset.X -= _scrollPos.X;
}
else if (_scrollWrapOffset.X + _scrollPos.X + _lastTextSize.Width < 0.0f)
_scrollWrapOffset.X = float.NaN;
break;
case TextScrollEnum.Right:
_scrollPos.X += dif;
if (_scrollPos.X > textBox.Width / 2.0f)
{
_scrollWrapOffset.X = _scrollPos.X;
_scrollPos.X = -_lastTextSize.Width - 4;
_scrollWrapOffset.X -= _scrollPos.X;
}
else if (_scrollWrapOffset.X + _scrollPos.X > textBox.Width)
_scrollWrapOffset.X = float.NaN;
break;
case TextScrollEnum.Down:
_scrollPos.Y += dif;
if (_scrollPos.Y > textBox.Height / 2.0f)
{
_scrollWrapOffset.Y = _scrollPos.Y;
_scrollPos.Y = -_lastTextSize.Height - 4;
_scrollWrapOffset.Y -= _scrollPos.Y;
}
else if (_scrollWrapOffset.Y + _scrollPos.Y > textBox.Height)
_scrollWrapOffset.Y = float.NaN;
break;
//case TextScrollEnum.Up:
default:
_scrollPos.Y -= dif;
if (_scrollPos.Y + _lastTextSize.Height < textBox.Height / 2.0f)
{
_scrollWrapOffset.Y = _scrollPos.Y;
_scrollPos.Y = textBox.Height + 4;
_scrollWrapOffset.Y -= _scrollPos.Y;
}
else if (_scrollWrapOffset.Y + _scrollPos.Y + _lastTextSize.Height < 0.0f)
_scrollWrapOffset.Y = float.NaN;
break;
}
return mode;
}
/// <summary>
/// Standard draw method for this text.
/// </summary>
/// <param name="textBox">The box where the text should be drawn.</param>
/// <param name="horzAlignment">The horizontal alignment.</param>
/// <param name="vertAlignment">The vertical alignment.</param>
/// <param name="color">The color.</param>
/// <param name="wrap">If <c>true</c> then text will be word-wrapped to fit the <paramref name="textBox"/>.</param>
/// <param name="fade">If <c>true</c> then text will be faded at the edge of the <paramref name="textBox"/>.</param>
/// <param name="zOrder">A value indicating the depth (and thus position in the visual heirachy) that this element should be rendered at.</param>
/// <param name="scrollMode">Text scrolling behaviour.</param>
/// <param name="scrollSpeed">Text scrolling speed in units (pixels at original skin size) per second.</param>
/// <param name="scrollDelay">Text scrolling delay in seconds.</param>
/// <param name="finalTransform">The final combined layout/render-transform.</param>
public void Render(RectangleF textBox, HorizontalTextAlignEnum horzAlignment, VerticalTextAlignEnum vertAlignment, Color4 color,
bool wrap, bool fade, float zOrder, TextScrollEnum scrollMode, float scrollSpeed, float scrollDelay, Matrix finalTransform)
{
if (!IsAllocated || wrap != _lastWrap || _textChanged || (wrap && textBox.Width != _lastTextBoxWidth))
{
Allocate(textBox.Width, wrap);
if (!IsAllocated)
return;
}
// Update scrolling
TextScrollEnum actualScrollMode = scrollMode;
if (scrollMode != TextScrollEnum.None && _lastTimeUsed != DateTime.MinValue)
actualScrollMode = UpdateScrollPosition(textBox, scrollMode, scrollSpeed, scrollDelay);
// Prepare horizontal alignment info for shader. X is position offset, Y is multiplyer for line width.
Vector4 alignParam;
switch (horzAlignment)
{
case HorizontalTextAlignEnum.Center:
alignParam = new Vector4(textBox.Width / 2.0f, -0.5f, zOrder, 1.0f);
break;
case HorizontalTextAlignEnum.Right:
alignParam = new Vector4(textBox.Width, -1.0f, zOrder, 1.0f);
break;
//case TextAlignEnum.Left:
default:
alignParam = new Vector4(0.0f, 0.0f, zOrder, 1.0f);
break;
}
// Do vertical alignment by adjusting yPosition
float yPosition = 0.0f;
switch (vertAlignment)
{
case VerticalTextAlignEnum.Bottom:
yPosition = Math.Max(textBox.Height - _lastTextSize.Height, 0.0f);
break;
case VerticalTextAlignEnum.Center:
yPosition += Math.Max((textBox.Height - _lastTextSize.Height) / 2.0f, 0.0f);
break;
//case TextAlignEnum.Top:
// Do nothing
}
// Do we need to add fading edges?
Vector4 fadeBorder;
if (fade && CalculateFadeBorder(actualScrollMode, textBox, horzAlignment, out fadeBorder))
{
_effect = ContentManager.Instance.GetEffect(EFFECT_FONT_FADE);
_effect.Parameters[PARAM_FADE_BORDER] = fadeBorder;
}
else
_effect = ContentManager.Instance.GetEffect(EFFECT_FONT);
// Render
_effect.Parameters[PARAM_COLOR] = color;
_effect.Parameters[PARAM_ALIGNMENT] = alignParam;
_effect.Parameters[PARAM_SCROLL_POSITION] = new Vector4(_scrollPos.X, _scrollPos.Y + yPosition, 0.0f, 0.0f);
_effect.Parameters[PARAM_TEXT_RECT] = new Vector4(textBox.Left, textBox.Top, textBox.Width, textBox.Height);
DoRender(finalTransform);
// Because text wraps around before it is complete scrolled off the screen we may need to render a second copy
// to create the desired wrapping effect
if (scrollMode != TextScrollEnum.None)
{
if (!float.IsNaN(_scrollWrapOffset.X))
{
_effect.Parameters[PARAM_SCROLL_POSITION] = new Vector4(_scrollPos.X + _scrollWrapOffset.X, _scrollPos.Y, 0.0f, 0.0f);
DoRender(finalTransform);
}
else if (!float.IsNaN(_scrollWrapOffset.Y))
{
_effect.Parameters[PARAM_SCROLL_POSITION] = new Vector4(_scrollPos.X, _scrollPos.Y + _scrollWrapOffset.Y, 0.0f, 0.0f);
DoRender(finalTransform);
}
}
_lastTimeUsed = SkinContext.FrameRenderingStartTime;
}
protected TextScrollEnum UpdateScrollPosition(RectangleF textBox, TextScrollEnum mode, float speed, float scrollDelay)
{
if ((SkinContext.FrameRenderingStartTime - _scrollInitialized).TotalSeconds < scrollDelay)
{
return(TextScrollEnum.None);
}
float dif = speed * (float)SkinContext.FrameRenderingStartTime.Subtract(_lastTimeUsed).TotalSeconds;
if (mode == TextScrollEnum.Auto)
{
if (_lastWrap && _lastTextSize.Height > textBox.Height)
{
mode = TextScrollEnum.Up;
}
else if (_textLines.Length == 1 && _lastTextSize.Width > textBox.Width)
{
mode = TextScrollEnum.Left;
}
else
{
return(TextScrollEnum.None);
}
}
switch (mode)
{
case TextScrollEnum.Left:
_scrollPos.X -= dif;
if (_scrollPos.X + _lastTextSize.Width < textBox.Width / 2.0f)
{
_scrollWrapOffset.X = _scrollPos.X;
_scrollPos.X = textBox.Width + 4;
_scrollWrapOffset.X -= _scrollPos.X;
}
else if (_scrollWrapOffset.X + _scrollPos.X + _lastTextSize.Width < 0.0f)
{
_scrollWrapOffset.X = float.NaN;
}
break;
case TextScrollEnum.Right:
_scrollPos.X += dif;
if (_scrollPos.X > textBox.Width / 2.0f)
{
_scrollWrapOffset.X = _scrollPos.X;
_scrollPos.X = -_lastTextSize.Width - 4;
_scrollWrapOffset.X -= _scrollPos.X;
}
else if (_scrollWrapOffset.X + _scrollPos.X > textBox.Width)
{
_scrollWrapOffset.X = float.NaN;
}
break;
case TextScrollEnum.Down:
_scrollPos.Y += dif;
if (_scrollPos.Y > textBox.Height / 2.0f)
{
_scrollWrapOffset.Y = _scrollPos.Y;
_scrollPos.Y = -_lastTextSize.Height - 4;
_scrollWrapOffset.Y -= _scrollPos.Y;
}
else if (_scrollWrapOffset.Y + _scrollPos.Y > textBox.Height)
{
_scrollWrapOffset.Y = float.NaN;
}
break;
//case TextScrollEnum.Up:
default:
_scrollPos.Y -= dif;
if (_scrollPos.Y + _lastTextSize.Height < textBox.Height / 2.0f)
{
_scrollWrapOffset.Y = _scrollPos.Y;
_scrollPos.Y = textBox.Height + 4;
_scrollWrapOffset.Y -= _scrollPos.Y;
}
else if (_scrollWrapOffset.Y + _scrollPos.Y + _lastTextSize.Height < 0.0f)
{
_scrollWrapOffset.Y = float.NaN;
}
break;
}
return(mode);
}
/// <summary>
/// Standard draw method for this text.
/// </summary>
/// <param name="textBox">The box where the text should be drawn.</param>
/// <param name="horzAlignment">The horizontal alignment.</param>
/// <param name="vertAlignment">The vertical alignment.</param>
/// <param name="color">The color.</param>
/// <param name="wrap">If <c>true</c> then text will be word-wrapped to fit the <paramref name="textBox"/>.</param>
/// <param name="fade">If <c>true</c> then text will be faded at the edge of the <paramref name="textBox"/>.</param>
/// <param name="zOrder">A value indicating the depth (and thus position in the visual heirachy) that this element should be rendered at.</param>
/// <param name="scrollMode">Text scrolling behaviour.</param>
/// <param name="scrollSpeed">Text scrolling speed in units (pixels at original skin size) per second.</param>
/// <param name="scrollDelay">Text scrolling delay in seconds.</param>
/// <param name="finalTransform">The final combined layout/render-transform.</param>
public void Render(RectangleF textBox, HorizontalTextAlignEnum horzAlignment, VerticalTextAlignEnum vertAlignment, Color4 color,
bool wrap, bool fade, float zOrder, TextScrollEnum scrollMode, float scrollSpeed, float scrollDelay, Matrix finalTransform)
{
if (!IsAllocated || wrap != _lastWrap || _textChanged || (wrap && textBox.Width != _lastTextBoxWidth))
{
Allocate(textBox.Width, wrap);
if (!IsAllocated)
{
return;
}
}
// Update scrolling
TextScrollEnum actualScrollMode = scrollMode;
if (scrollMode != TextScrollEnum.None && _lastTimeUsed != DateTime.MinValue)
{
actualScrollMode = UpdateScrollPosition(textBox, scrollMode, scrollSpeed, scrollDelay);
}
// Prepare horizontal alignment info for shader. X is position offset, Y is multiplyer for line width.
Vector4 alignParam;
switch (horzAlignment)
{
case HorizontalTextAlignEnum.Center:
alignParam = new Vector4(textBox.Width / 2.0f, -0.5f, zOrder, 1.0f);
break;
case HorizontalTextAlignEnum.Right:
alignParam = new Vector4(textBox.Width, -1.0f, zOrder, 1.0f);
break;
//case TextAlignEnum.Left:
default:
alignParam = new Vector4(0.0f, 0.0f, zOrder, 1.0f);
break;
}
// Do vertical alignment by adjusting yPosition
float yPosition = 0.0f;
switch (vertAlignment)
{
case VerticalTextAlignEnum.Bottom:
yPosition = Math.Max(textBox.Height - _lastTextSize.Height, 0.0f);
break;
case VerticalTextAlignEnum.Center:
yPosition += Math.Max((textBox.Height - _lastTextSize.Height) / 2.0f, 0.0f);
break;
//case TextAlignEnum.Top:
// Do nothing
}
// Do we need to add fading edges?
Vector4 fadeBorder;
if (fade && CalculateFadeBorder(actualScrollMode, textBox, horzAlignment, out fadeBorder))
{
_effect = ContentManager.Instance.GetEffect(EFFECT_FONT_FADE);
_effect.Parameters[PARAM_FADE_BORDER] = fadeBorder;
}
else
{
_effect = ContentManager.Instance.GetEffect(EFFECT_FONT);
}
// Render
_effect.Parameters[PARAM_COLOR] = color;
_effect.Parameters[PARAM_ALIGNMENT] = alignParam;
_effect.Parameters[PARAM_SCROLL_POSITION] = new Vector4(_scrollPos.X, _scrollPos.Y + yPosition, 0.0f, 0.0f);
_effect.Parameters[PARAM_TEXT_RECT] = new Vector4(textBox.Left, textBox.Top, textBox.Width, textBox.Height);
DoRender(finalTransform);
// Because text wraps around before it is complete scrolled off the screen we may need to render a second copy
// to create the desired wrapping effect
if (scrollMode != TextScrollEnum.None)
{
if (!float.IsNaN(_scrollWrapOffset.X))
{
_effect.Parameters[PARAM_SCROLL_POSITION] = new Vector4(_scrollPos.X + _scrollWrapOffset.X, _scrollPos.Y, 0.0f, 0.0f);
DoRender(finalTransform);
}
else if (!float.IsNaN(_scrollWrapOffset.Y))
{
_effect.Parameters[PARAM_SCROLL_POSITION] = new Vector4(_scrollPos.X, _scrollPos.Y + _scrollWrapOffset.Y, 0.0f, 0.0f);
DoRender(finalTransform);
}
}
_lastTimeUsed = SkinContext.FrameRenderingStartTime;
}
