public override void DrawPreview(CairoContextEx gr, int width, int height, bool rtl)
{
gr.Scale(width, height);
gr.SetSourceColor(new Cairo.Color(0, 0, 0));
gr.LineWidth = LineWidth;
DrawObjectToMemorize(gr, width, height, rtl);
}
protected void InitDraw(CairoContextEx gr, int width, int height, bool rtl)
{
gr.Scale(width, height);
gr.SetSourceColor(default_color);
gr.LineWidth = LineWidth;
// Not all Cairo surfaces have a default font size (like PDF)
gr.SetPangoNormalFontSize();
}
public override void Draw(CairoContextEx gr, int area_width, int area_height, bool rtl)
{
if (IsPreviewMode)
{
DrawPreview(gr, area_width, area_height, rtl);
return;
}
if (downview != null)
{
downview.Draw(gr, area_width, area_height, rtl);
return;
}
InitDraw(gr, area_width, area_height, rtl);
if (SupportsShading && shade)
{
if (alpha > 0)
{
alpha -= (1 / (double)shading_time);
}
gr.SetSourceColor(new Color(DefaultDrawingColor.R, DefaultDrawingColor.G, DefaultDrawingColor.B, alpha));
DrawObjectToMemorize(gr, area_width, area_height, rtl);
return;
}
alpha = 1;
gr.SetSourceColor(new Color(DefaultDrawingColor.R, DefaultDrawingColor.G, DefaultDrawingColor.B, alpha));
if (request_answer && Answer.Draw == false)
{
DrawPossibleAnswers(gr, area_width, area_height, rtl);
}
else
{
DrawObjectToMemorize(gr, area_width, area_height, rtl);
}
}
public void DrawTimeBar(CairoContextEx gr, double x, double y, double percentage)
{
double width = 0.04, height = 0.6;
const double w = 0.003, h = 0.003;
gr.DrawTextCentered(x + (width / 2), y + height + 0.05, Translations.GetString("Time left"));
gr.Stroke();
gr.Save();
gr.SetSourceColor(new Color(0, 0, 0));
gr.MoveTo(x, y);
gr.LineTo(x, y + height);
gr.LineTo(x + width, y + height);
gr.LineTo(x + width, y);
gr.LineTo(x, y);
gr.Stroke();
x += w;
y += h;
width -= w * 2;
height -= h * 2;
y += height * (100 - percentage) / 100;
height *= percentage / 100;
if (gradient == null)
{
gradient = new LinearGradient(x, y, x + width, y + height);
gradient.AddColorStop(0, new Color(1, 0, 0, 1));
gradient.AddColorStop(1, new Color(0.2, 0, 0, 1));
}
gr.SetSource(gradient);
gr.MoveTo(x, y);
gr.LineTo(x, y + height);
gr.LineTo(x + width, y + height);
gr.LineTo(x + width, y);
gr.LineTo(x, y);
gr.FillPreserve();
gr.Stroke();
gr.Restore();
}