public override void Render(Cairo.Context context)
{
base.Render(context);
using Layout pangoLayout = CairoHelper.CreateLayout(context);
pangoLayout.SetText(Text);
Foreground.ApplyTo(context);
context.MoveTo(RenderSize.X + Padding.Left,
RenderSize.Y + Padding.Top);
pangoLayout.FontDescription = _font;
pangoLayout.Alignment = TextAlignment;
CairoHelper.ShowLayout(context, pangoLayout);
}
private void DrawStringTBLR(PageText pt, Cairo.Context g, Cairo.Rectangle r)
{
StyleInfo si = pt.SI;
string s = pt.Text;
g.Save();
layout = CairoHelper.CreateLayout(g);
//Pango fonts are scaled to 72dpi, Windows fonts uses 96dpi
float fontsize = (si.FontSize * 72 / 96);
var font = FontDescription.FromString($"{si.GetFontFamily().Name} {fontsize * PixelsX(1)}");
if (si.FontStyle == FontStyleEnum.Italic)
{
font.Style = Style.Italic;
}
switch (si.FontWeight)
{
case FontWeightEnum.Bold:
case FontWeightEnum.Bolder:
case FontWeightEnum.W500:
case FontWeightEnum.W600:
case FontWeightEnum.W700:
case FontWeightEnum.W800:
case FontWeightEnum.W900:
font.Weight = Weight.Bold;
break;
}
FontDescription oldfont = layout.FontDescription;
layout.FontDescription = font;
switch (si.TextAlign)
{
case TextAlignEnum.Right:
layout.Alignment = Alignment.Right;
break;
case TextAlignEnum.Center:
layout.Alignment = Alignment.Center;
break;
case TextAlignEnum.Left:
default:
layout.Alignment = Alignment.Left;
break;
}
layout.Width = Units.FromPixels((int)(r.Height - si.PaddingTop - si.PaddingBottom - 2));
layout.Wrap = WrapMode.WordChar;
layout.SetText(s);
Rectangle logical;
Rectangle ink;
layout.GetExtents(out ink, out logical);
double height = logical.Height / Scale.PangoScale;
double y = 0;
double x = 0;
switch (si.VerticalAlign)
{
case VerticalAlignEnum.Top:
x = r.X + si.PaddingLeft;
break;
case VerticalAlignEnum.Middle:
x = r.X + (r.Width - height) / 2;
break;
case VerticalAlignEnum.Bottom:
x = r.X + (r.Width - height) + si.PaddingLeft;
break;
}
// draw the background
DrawBackground(g, r, si);
Cairo.Rectangle box = new Cairo.Rectangle(
x,
r.Y + r.Height - si.PaddingBottom - 1,
r.Height - si.PaddingBottom - si.PaddingTop,
r.Width - si.PaddingLeft + si.PaddingRight);
g.Color = si.Color.ToCairoColor();
g.Rotate(270 * Math.PI / 180.0);
CairoHelper.UpdateLayout(g, layout);
g.MoveTo(-box.Y, box.X);
CairoHelper.ShowLayout(g, layout);
layout.FontDescription = oldfont;
g.Restore();
}
private void DrawStringHorizontal(PageText pt, Cairo.Context g, Cairo.Rectangle r)
{
StyleInfo si = pt.SI;
string s = pt.Text;
g.Save();
layout = CairoHelper.CreateLayout(g);
float fontsize = si.FontSize * 72f / 96f;
var font = FontDescription.FromString(string.Format("{0} {1}", si.GetFontFamily().Name,
fontsize * PixelsX(1)));
if (si.FontStyle == FontStyleEnum.Italic)
{
font.Style = Style.Italic;
}
switch (si.FontWeight)
{
case FontWeightEnum.Bold:
case FontWeightEnum.Bolder:
case FontWeightEnum.W500:
case FontWeightEnum.W600:
case FontWeightEnum.W700:
case FontWeightEnum.W800:
case FontWeightEnum.W900:
font.Weight = Weight.Bold;
break;
}
FontDescription oldfont = layout.FontDescription;
layout.FontDescription = font;
switch (si.TextAlign)
{
case TextAlignEnum.Right:
layout.Alignment = Alignment.Right;
break;
case TextAlignEnum.Center:
layout.Alignment = Alignment.Center;
break;
case TextAlignEnum.Left:
default:
layout.Alignment = Alignment.Left;
break;
}
layout.Width = Units.FromPixels((int)(r.Width - si.PaddingLeft - si.PaddingRight - 2));
layout.Wrap = WrapMode.WordChar;
layout.SetText(s);
Rectangle logical;
Rectangle ink;
layout.GetExtents(out ink, out logical);
double height = logical.Height / Scale.PangoScale;
double y = 0;
switch (si.VerticalAlign)
{
case VerticalAlignEnum.Top:
y = r.Y + si.PaddingTop;
break;
case VerticalAlignEnum.Middle:
y = r.Y + (r.Height - height) / 2;
break;
case VerticalAlignEnum.Bottom:
y = r.Y + (r.Height - height) - si.PaddingBottom;
break;
}
// draw the background
DrawBackground(g, r, si);
Cairo.Rectangle box = new Cairo.Rectangle(
r.X + si.PaddingLeft + 1,
y,
r.Width,
r.Height);
g.Color = si.Color.ToCairoColor();
g.MoveTo(box.X, box.Y);
CairoHelper.ShowLayout(g, layout);
layout.FontDescription = oldfont;
g.Restore();
}