private void ProcessPage(Xwt.Drawing.Context g, IEnumerable p)
{
foreach (PageItem pi in p)
{
if (pi is PageTextHtml)
{ // PageTextHtml is actually a composite object (just like a page)
ProcessHtml(pi as PageTextHtml, g);
continue;
}
if (pi is PageLine)
{
PageLine pl = pi as PageLine;
Xwt.Drawing.Color bcolorleft = XwtColor.SystemColorToXwtColor(pl.SI.BColorLeft);
DrawLine(bcolorleft, pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X), PixelsY(pl.Y), PixelsX(pl.X2), PixelsY(pl.Y2)
);
continue;
}
Xwt.Rectangle rect = new Xwt.Rectangle(PixelsX(pi.X), PixelsY(pi.Y), PixelsX(pi.W), PixelsY(pi.H));
if (pi.SI.BackgroundImage != null)
{
// put out any background image
PageImage i = pi.SI.BackgroundImage;
DrawImage(i, g, rect);
continue;
}
if (pi is PageText)
{
PageText pt = pi as PageText;
DrawString(pt, g, rect);
}
if (pi is PageImage)
{
PageImage i = pi as PageImage;
DrawImage(i, g, rect);
}
if (pi is PageRectangle)
{
//DrawBackground(g, rect, pi.SI);
}
DrawBorder(pi, g, rect);
}
}
private void DrawBorder(PageItem pi, Xwt.Drawing.Context g, Xwt.Rectangle r)
{
if (r.Height <= 0 || r.Width <= 0) // no bounding box to use
{
return;
}
double right = r.X + r.Width;
double bottom = r.Y + r.Height;
StyleInfo si = pi.SI;
Xwt.Drawing.Color ec = XwtColor.SystemColorToXwtColor(si.BackgroundGradientEndColor);
DrawLine(XwtColor.SystemColorToXwtColor(si.BColorTop), si.BStyleTop, si.BWidthTop, g, r.X, r.Y, right, r.Y);
DrawLine(XwtColor.SystemColorToXwtColor(si.BColorRight), si.BStyleRight, si.BWidthRight, g, right, r.Y, right, bottom);
DrawLine(XwtColor.SystemColorToXwtColor(si.BColorLeft), si.BStyleLeft, si.BWidthLeft, g, r.X, r.Y, r.X, bottom);
DrawLine(XwtColor.SystemColorToXwtColor(si.BColorBottom), si.BStyleBottom, si.BWidthBottom, g, r.X, bottom, right, bottom);
}
private void DrawBackground(Xwt.Drawing.Context g, Xwt.Rectangle rect, StyleInfo si)
{
// LinearGradientBrush linGrBrush = null;
// SolidBrush sb = null;
if (si.BackgroundColor.IsEmpty)
{
return;
}
g.Save();
Xwt.Drawing.Color c = XwtColor.SystemColorToXwtColor(si.BackgroundColor);
Xwt.Drawing.Gradient gradient = null;
if (si.BackgroundGradientType != BackgroundGradientTypeEnum.None &&
!si.BackgroundGradientEndColor.IsEmpty)
{
Xwt.Drawing.Color ec = XwtColor.SystemColorToXwtColor(si.BackgroundGradientEndColor);
switch (si.BackgroundGradientType)
{
case BackgroundGradientTypeEnum.LeftRight:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Horizontal);
gradient = new Xwt.Drawing.LinearGradient(rect.X, rect.Y, rect.X + rect.Width, rect.Y);
break;
case BackgroundGradientTypeEnum.TopBottom:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Vertical);
gradient = new Xwt.Drawing.LinearGradient(rect.X, rect.Y, rect.X, rect.Y + rect.Height);
break;
case BackgroundGradientTypeEnum.Center:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Horizontal);
throw new NotSupportedException();
// break;
case BackgroundGradientTypeEnum.DiagonalLeft:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.ForwardDiagonal);
gradient = new Xwt.Drawing.LinearGradient(rect.X, rect.Y, rect.X + rect.Width, rect.Y + rect.Height);
break;
case BackgroundGradientTypeEnum.DiagonalRight:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.BackwardDiagonal);
gradient = new Xwt.Drawing.LinearGradient(rect.X + rect.Width, rect.Y + rect.Height, rect.X, rect.Y);
break;
case BackgroundGradientTypeEnum.HorizontalCenter:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Horizontal);
throw new NotSupportedException();
// break;
case BackgroundGradientTypeEnum.VerticalCenter:
// linGrBrush = new LinearGradientBrush(rect, c, ec, LinearGradientMode.Vertical);
throw new NotSupportedException();
// break;
default:
break;
}
gradient.AddColorStop(0, c);
gradient.AddColorStop(1, ec);
}
if (gradient != null)
{
// TODO: Fix
//g.FillRectangle(rect, gradient);
}
else if (!si.BackgroundColor.IsEmpty)
{
// TODO: Fix
//g.FillRectangle(rect, c);
}
g.Restore();
}
private void DrawString(PageText pt, Xwt.Drawing.Context g, Xwt.Rectangle r)
{
StyleInfo si = pt.SI;
string s = pt.Text;
g.Save();
layout = new Xwt.Drawing.TextLayout(g);
layout.Font = g.Font;
float fontsize = (si.FontSize * 72 / 96);
layout.Font.WithFamily(si.GetFontFamily().Name);
layout.Font.WithPixelSize(fontsize * PixelsX(1));
if (si.FontStyle == FontStyleEnum.Italic)
{
layout.Font.WithStyle(Xwt.Drawing.FontStyle.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:
layout.Font.WithWeight(Xwt.Drawing.FontWeight.Bold);
break;
}
// TODO: Fix Alignment
//switch (si.TextAlign)
//{
// case TextAlignEnum.Right:
// layout.Alignment = Pango.Alignment.Right;
// break;
// case TextAlignEnum.Center:
// layout.Alignment = Pango.Alignment.Center;
// break;
// case TextAlignEnum.Left:
// default:
// layout.Alignment = Pango.Alignment.Left;
// break;
//}
// TODO: Fix with
//layout.Width = Pango.Units.FromPixels((int)(r.Width - si.PaddingLeft - si.PaddingRight - 2));
layout.Text = s;
//Xwt.Rectangle logical;
// Xwt.Rectangle ink;
// TODO: Fix
//layout.GetExtents(out ink, out logical);
double height = 12; // logical.Height / Pango.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);
Xwt.Rectangle box = new Xwt.Rectangle(
r.X + si.PaddingLeft + 1,
y,
r.Width,
r.Height);
Xwt.Drawing.Color sicolor = XwtColor.SystemColorToXwtColor(si.Color);
g.SetColor(sicolor);
g.MoveTo(box.X, box.Y);
g.DrawTextLayout(layout, box.X, box.Y);
g.Restore();
}