public override float DrawChar(DrawingHandleScreen handle, Rune rune, Vector2 baseline, float scale, Color color, bool fallback = true)
{
var metrics = Handle.GetCharMetrics(rune, scale);
if (!metrics.HasValue)
{
if (fallback && !Rune.IsWhiteSpace(rune))
{
rune = new Rune('�');
metrics = Handle.GetCharMetrics(rune, scale);
if (!metrics.HasValue)
{
return(0);
}
}
else
{
return(0);
}
}
var texture = Handle.GetCharTexture(rune, scale);
if (texture == null)
{
return(metrics.Value.Advance);
}
baseline += new Vector2(metrics.Value.BearingX, -metrics.Value.BearingY);
handle.DrawTexture(texture, baseline, color);
return(metrics.Value.Advance);
}
protected override void DoDraw(DrawingHandleScreen handle, UIBox2 box)
{
var(btl, btt, btr, btb) = BorderThickness;
if (btl > 0)
{
handle.DrawRect(new UIBox2(box.Left, box.Top, box.Left + btl, box.Bottom), BorderColor);
}
if (btt > 0)
{
handle.DrawRect(new UIBox2(box.Left, box.Top, box.Right, box.Top + btt), BorderColor);
}
if (btr > 0)
{
handle.DrawRect(new UIBox2(box.Right - btr, box.Top, box.Right, box.Bottom), BorderColor);
}
if (btb > 0)
{
handle.DrawRect(new UIBox2(box.Left, box.Bottom - btb, box.Right, box.Bottom), BorderColor);
}
handle.DrawRect(BorderThickness.Deflate(box), BackgroundColor);
}
// DrawChar just proxies to the stack, or invokes _main's fallback.
public override float DrawChar(DrawingHandleScreen handle, Rune rune, Vector2 baseline, float scale, Color color, bool fallback = true)
{
foreach (var f in Stack)
{
var w = f.DrawChar(handle, rune, baseline, scale, color, fallback: false);
if (w != 0f)
{
return(w);
}
}
if (fallback)
{
return(_main.DrawChar(handle, rune, baseline, scale, color, fallback: true));
}
return(0f);
}
public override float DrawChar(DrawingHandleScreen handle, char chr, Vector2 baseline, float scale, Color color)
{
var metrics = Handle.GetCharMetrics(chr, scale);
if (!metrics.HasValue)
{
return(0);
}
var texture = Handle.GetCharTexture(chr, scale);
if (texture == null)
{
return(metrics.Value.Advance);
}
baseline += new Vector2(metrics.Value.BearingX, -metrics.Value.BearingY);
handle.DrawTexture(texture, baseline, color);
return(metrics.Value.Advance);
}
/// <summary>
/// Draw a character at a certain baseline position on screen.
/// </summary>
/// <param name="handle">The drawing handle to draw to.</param>
/// <param name="rune">The Unicode code point to draw.</param>
/// <param name="baseline">The baseline from which to draw the character.</param>
/// <param name="scale">DPI scale factor to render the font at.</param>
/// <param name="color">The color of the character to draw.</param>
/// <param name="fallback">If the character is not available, render "�" instead.</param>
/// <returns>How much to advance the cursor to draw the next character.</returns>
public abstract float DrawChar(
DrawingHandleScreen handle, Rune rune, Vector2 baseline, float scale,
Color color, bool fallback = true);
public override float DrawChar(DrawingHandleScreen handle, Rune rune, Vector2 baseline, float scale, Color color, bool fallback = true)
{
// Nada, it's a dummy after all.
return(0);
}
protected override void DoDraw(DrawingHandleScreen handle, UIBox2 box)
{
handle.DrawRect(box, BackgroundColor);
}
protected override void DoDraw(DrawingHandleScreen handle, UIBox2 box)
{
// It's empty what more do you want?
}
public float DrawChar(DrawingHandleScreen handle, char chr, Vector2 baseline, float scale, Color color)
{
return(DrawChar(handle, (Rune)chr, baseline, scale, color));
}
public abstract float DrawChar(DrawingHandleScreen handle, char chr, Vector2 baseline, float scale,
Color color);
public override float DrawChar(DrawingHandleScreen handle, char chr, Vector2 baseline, float scale, Color color)
{
// Nada, it's a dummy after all.
return(0);
}
