/// <summary>
/// Pre-Processes the HTML prior to rendering it in a page.
/// </summary>
public static void ProcessHtml(PageTextHtml pth, Graphics g, RectangleF clipRect, bool bHitList, CanvasProperties cp, ref PageItemManager cpim)
{
pth.Build(g); // Builds the subobjects that make up the html
CanvasPainter.ProcessPage(g, pth, clipRect, bHitList, cp, ref cpim);
}
/// <summary>
/// Renders all the objects in a Page or composite object.
/// </summary>
private static void ProcessPage(Graphics g, IEnumerable p, RectangleF clipRect, bool bHitList, CanvasProperties cp, ref PageItemManager cpim)
{
foreach (PageItem pi in p)
{
if (pi is PageTextHtml)
{ // PageTextHtml is actually a composite object (just like a page)
if (cpim.SelectToolEnabled && bHitList)
{
RectangleF hr = new RectangleF(
Measurement.PixelsFromPoints(pi.X + cp.Left - cp.Scroll.X, cp.Dpi.X),
Measurement.PixelsFromPoints(pi.Y + cp.Scroll.X - cp.Scroll.Y, cp.Dpi.Y),
Measurement.PixelsFromPoints(pi.W, cp.Dpi.X),
Measurement.PixelsFromPoints(pi.H, cp.Dpi.Y));
cpim.HitList.Add(new HitListEntry(hr, pi));
}
ProcessHtml(pi as PageTextHtml, g, clipRect, bHitList, cp, ref cpim);
continue;
}
if (pi is PageLine)
{
PageLine pl = pi as PageLine;
CanvasPainter.DrawLine(
pl.SI.BColorLeft,
pl.SI.BStyleLeft,
pl.SI.BWidthLeft,
g,
Measurement.PixelsFromPoints(pl.X + cp.Left - cp.Scroll.X, cp.Dpi.X),
Measurement.PixelsFromPoints(pl.Y + cp.Top - cp.Scroll.Y, cp.Dpi.Y),
Measurement.PixelsFromPoints(pl.X2 + cp.Left - cp.Scroll.X, cp.Dpi.X),
Measurement.PixelsFromPoints(pl.Y2 + cp.Top - cp.Scroll.Y, cp.Dpi.Y));
continue;
}
RectangleF rect = new RectangleF(
Measurement.PixelsFromPoints(pi.X + cp.Left - cp.Scroll.X, cp.Dpi.X),
Measurement.PixelsFromPoints(pi.Y + cp.Top - cp.Scroll.Y, cp.Dpi.Y),
Measurement.PixelsFromPoints(pi.W, cp.Dpi.X),
Measurement.PixelsFromPoints(pi.H, cp.Dpi.Y));
// Maintain the hit list
if (bHitList)
{
if (cpim.SelectToolEnabled)
{ // we need all PageText and PageImage items that have been displayed
if (pi is PageText || pi is PageImage)
{
cpim.HitList.Add(new HitListEntry(rect, pi));
}
}
// Only care about items with links and tips
else if (pi.HyperLink != null || pi.BookmarkLink != null || pi.Tooltip != null)
{
HitListEntry hle;
if (pi is PagePolygon)
{
hle = new HitListEntry(pi as PagePolygon, cp.Left - cp.Scroll.X, cp.Top - cp.Scroll.Y, ((Canvas)cp.Parent));
}
else
{
hle = new HitListEntry(rect, pi);
}
cpim.HitList.Add(hle);
}
}
if ((pi is PagePolygon) || (pi is PageCurve))
{ // intentionally empty; polygon's rectangles aren't calculated
}
else if (!rect.IntersectsWith(clipRect))
{
continue;
}
if (pi.SI.BackgroundImage != null)
{ // put out any background image
PageImage i = pi.SI.BackgroundImage;
CanvasPainter.DrawImageBackground(i, pi.SI, g, rect);
}
if (pi is PageText)
{
PageText pt = pi as PageText;
CanvasPainter.DrawString(pt, g, rect, cp, cpim);
}
else if (pi is PageImage)
{
PageImage i = pi as PageImage;
CanvasPainter.DrawImage(i, g, rect, cp, cpim);
}
else if (pi is PageRectangle)
{
CanvasPainter.DrawBackground(g, rect, pi.SI);
}
else if (pi is PageEllipse)
{
PageEllipse pe = pi as PageEllipse;
CanvasPainter.DrawEllipse(pe, g, rect);
}
else if (pi is PagePie)
{
PagePie pp = pi as PagePie;
CanvasPainter.DrawPie(pp, g, rect);
}
else if (pi is PagePolygon)
{
PagePolygon ppo = pi as PagePolygon;
CanvasPainter.FillPolygon(ppo, g, rect, cp);
}
else if (pi is PageCurve)
{
PageCurve pc = pi as PageCurve;
CanvasPainter.DrawCurve(pc.SI.BColorLeft, pc.SI.BStyleLeft, pc.SI.BWidthLeft,
g, pc.Points, pc.Offset, pc.Tension, cp);
}
CanvasPainter.DrawBorder(pi, g, rect);
}
}