public override void OnPaint(IGUIContext ctx, RectangleF bounds)
{
base.OnPaint(ctx, bounds);
bounds.Offset(Padding.Left, Padding.Top);
int lineHeight = RowManager.LineHeight;
int offsetY = (int)ScrollOffsetY;
int rowIndex = RowManager.FirstParagraphOnScreen;
IGUIFont font = RowManager.Font;
try {
while (rowIndex < RowManager.Paragraphs.Count)
{
Paragraph para = RowManager.Paragraphs[rowIndex];
Rectangle rowBounds = new Rectangle((int)bounds.Left + (int)ScrollOffsetX,
(int)(bounds.Top + para.Top + offsetY),
(int)bounds.Width,
lineHeight);
var glyphLines = para.ToGlyphs();
foreach (var line in glyphLines)
{
if (rowBounds.Bottom > bounds.Top)
{
font.Begin(ctx);
font.PrintTextLine(line.Select(g => g.Glyph).ToArray(), rowBounds, Style.ForeColorBrush.Color);
font.End();
}
rowBounds.Offset(0, lineHeight);
if (rowBounds.Top > bounds.Bottom)
{
break;
}
}
if (rowBounds.Top > bounds.Bottom)
{
break;
}
rowIndex++;
}
if (CursorOn && CursorVisible)
{
RectangleF CursorRectangle = RowManager.CalcCursorRectangle();
int x = Math.Max((int)bounds.Left + 1, (int)(CursorRectangle.X + bounds.Left + ScrollOffsetX + 0.5f));
float y1 = CursorRectangle.Top + bounds.Top + ScrollOffsetY + 2;
float y2 = y1 + CursorRectangle.Height - 4;
ctx.DrawLine(CursorPen, x, y1, x, y2);
}
} catch (Exception ex) {
ex.LogError();
}
}
public static SizeF DrawString(this IGUIContext ctx, string text, IGUIFont font, Brush brush, float x, float y, FontFormat format)
{
if (ctx == null)
{
return(SizeF.Empty);
}
SizeF contentSize = font.Measure(text);
switch (format.HAlign)
{
case Alignment.Near:
break;
case Alignment.Center:
x -= contentSize.Width / 2f;
break;
case Alignment.Far:
x -= contentSize.Width;
break;
}
// ToDo: Was soll das hier noch ?
switch (format.VAlign)
{
case Alignment.Near:
y -= contentSize.Height / 2f;
break;
case Alignment.Center:
y += contentSize.Height / 2f;
break;
case Alignment.Far:
case Alignment.Baseline:
y += contentSize.Height / 2;
break;
}
SizeF retVal;
font.Begin(ctx);
Color c = Color.Empty;
if (brush != null)
{
c = brush.Color;
}
retVal = font.Print(text, new RectangleF(x, y, contentSize.Width, contentSize.Height), format, c);
font.End();
return(retVal);
}
public static SizeF DrawSelectedString(this IGUIContext ctx, string text, IGUIFont font, int selStart, int selLength, RectangleF rect, float offsetX, FontFormat format, Color foreColor, Color selectionBackColor, Color selectionForeColor)
{
if (ctx == null || text == null)
{
return(SizeF.Empty);
}
SizeF retVal;
font.Begin(ctx);
retVal = font.PrintSelectedString(text, selStart, selLength, rect, offsetX, format, foreColor, selectionBackColor, selectionForeColor);
font.End();
return(retVal);
}
public void PrintTextLine(IGUIContext ctx, string fontTag, uint[] glyphs, RectangleF bounds, Color foreColor)
{
IGUIFont font = FontByTag(fontTag);
if (font == null)
{
return;
}
font.Begin(ctx);
try {
font.PrintTextLine(glyphs, bounds, foreColor);
} catch (Exception ex) {
ex.LogError();
}
finally {
font.End();
}
}
public SizeF PrintSelectedString(IGUIContext ctx, string fontTag, string text, int selStart, int selLength, RectangleF bounds, float offsetX, FontFormat format, Color foreColor, Color selectionBackColor, Color selectionForeColor)
{
IGUIFont font = FontByTag(fontTag);
if (font == null)
{
return(SizeF.Empty);
}
font.Begin(ctx);
try {
return(font.PrintSelectedString(text, selStart, selLength, bounds, offsetX, format, foreColor, selectionBackColor, selectionForeColor));
} catch (Exception ex) {
ex.LogError();
return(SizeF.Empty);
}
finally {
font.End();
}
}
public SizeF Print(IGUIContext ctx, string fontTag, string text, RectangleF bounds, FontFormat format, Color color = default(Color))
{
IGUIFont font = FontByTag(fontTag);
if (font == null)
{
return(SizeF.Empty);
}
font.Begin(ctx);
try {
return(font.Print(text, bounds, format, color));
} catch (Exception ex) {
ex.LogError();
return(SizeF.Empty);
}
finally {
font.End();
}
}
public static SizeF DrawString(this IGUIContext ctx, string text, IGUIFont font, Brush brush, RectangleF rect, FontFormat format)
{
if (ctx == null || text == null)
{
return(SizeF.Empty);
}
SizeF retVal;
Color c = Color.Empty;
if (brush != null)
{
c = brush.Color;
}
font.Begin(ctx);
retVal = font.Print(text, rect, format, c);
font.End();
return(retVal);
}
