// render all the objects in a page (or any composite object
private void ProcessPage(System.Drawing.Graphics g, IEnumerable p)
{
// TODO: (Peter) Support can grow and can shrink
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;
DrawLine(pl.SI.BColorLeft, pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X + _left - _hScroll), PixelsY(pl.Y + _top - _vScroll),
PixelsX(pl.X2 + _left - _hScroll), PixelsY(pl.Y2 + _top - _vScroll));
continue;
}
RectangleF rect = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
PixelsX(pi.W), PixelsY(pi.H));
if ((pi is PagePolygon) || (pi is PageCurve))
{ // intentionally empty; polygon's rectangles aren't calculated
}
if (pi.SI.BackgroundImage != null)
{ // put out any background image
PageImage i = pi.SI.BackgroundImage;
DrawImageBackground(i, pi.SI, g, rect);
}
if (pi is PageText)
{
// TODO: enable can shrink, can grow
// 2005 spec file, page 9, in the text box has
// CanGrow and CanShrink
PageText pt = pi as PageText;
DrawString(pt, g, rect);
}
else if (pi is PageImage)
{
PageImage i = pi as PageImage;
DrawImage(i, g, rect);
}
else if (pi is PageRectangle)
{
this.DrawBackground(g, rect, pi.SI);
}
else if (pi is PageEllipse)
{
PageEllipse pe = pi as PageEllipse;
DrawEllipse(pe, g, rect);
}
else if (pi is PagePie)
{
PagePie pp = pi as PagePie;
DrawPie(pp, g, rect);
}
else if (pi is PagePolygon)
{
PagePolygon ppo = pi as PagePolygon;
FillPolygon(ppo, g, rect);
}
else if (pi is PageCurve)
{
PageCurve pc = pi as PageCurve;
DrawCurve(pc.SI.BColorLeft, pc.SI.BStyleLeft, pc.SI.BWidthLeft,
g, pc.Points, pc.Offset, pc.Tension);
}
DrawBorder(pi, g, rect);
}
// TO: convert System.Drawing.Graphics to Xwt.Drawing.Context and draw it to this.g
Bitmap bm = new Bitmap(gImg.Width, gImg.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
g.DrawImage(bm, gImg.Width, gImg.Height);
// Xwt.Drawing.Image.FromStream does not work. It crashes with both wpf and gtk
// As a work around save the image to a temporary file and load it into xwt using the
// FromFile method.
System.IO.MemoryStream s = new System.IO.MemoryStream();
gImg.Save(s, System.Drawing.Imaging.ImageFormat.Png);
Xwt.Drawing.Image img = Xwt.Drawing.Image.FromStream(s);
xwtContext.DrawImage(img, new Xwt.Rectangle(0, 0, gImg.Width, gImg.Height), new Xwt.Rectangle(0, 0, gImg.Width, gImg.Height));
img.Dispose();
}
private void DrawString(PageText pt, Graphics g, RectangleF r)
{
StyleInfo si = pt.SI;
string s = pt.Text;
Font drawFont = null;
StringFormat drawFormat = null;
Brush drawBrush = null;
try
{
// STYLE
System.Drawing.FontStyle fs = 0;
if (si.FontStyle == FontStyleEnum.Italic)
{
fs |= System.Drawing.FontStyle.Italic;
}
switch (si.TextDecoration)
{
case TextDecorationEnum.Underline:
fs |= System.Drawing.FontStyle.Underline;
break;
case TextDecorationEnum.LineThrough:
fs |= System.Drawing.FontStyle.Strikeout;
break;
case TextDecorationEnum.Overline:
case TextDecorationEnum.None:
break;
}
// WEIGHT
switch (si.FontWeight)
{
case FontWeightEnum.Bold:
case FontWeightEnum.Bolder:
case FontWeightEnum.W500:
case FontWeightEnum.W600:
case FontWeightEnum.W700:
case FontWeightEnum.W800:
case FontWeightEnum.W900:
fs |= System.Drawing.FontStyle.Bold;
break;
default:
break;
}
try
{
drawFont = new Font(si.GetFontFamily(), si.FontSize, fs); // si.FontSize already in points
}
catch (ArgumentException)
{
drawFont = new Font("Arial", si.FontSize, fs); // if this fails we'll let the error pass thru
}
// ALIGNMENT
drawFormat = new StringFormat();
switch (si.TextAlign)
{
case TextAlignEnum.Right:
drawFormat.Alignment = StringAlignment.Far;
break;
case TextAlignEnum.Center:
drawFormat.Alignment = StringAlignment.Center;
break;
case TextAlignEnum.Left:
default:
drawFormat.Alignment = StringAlignment.Near;
break;
}
if (pt.SI.WritingMode == WritingModeEnum.tb_rl)
{
drawFormat.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
drawFormat.FormatFlags |= StringFormatFlags.DirectionVertical;
}
switch (si.VerticalAlign)
{
case VerticalAlignEnum.Bottom:
drawFormat.LineAlignment = StringAlignment.Far;
break;
case VerticalAlignEnum.Middle:
drawFormat.LineAlignment = StringAlignment.Center;
break;
case VerticalAlignEnum.Top:
default:
drawFormat.LineAlignment = StringAlignment.Near;
break;
}
// draw the background
DrawBackground(g, r, si);
// adjust drawing rectangle based on padding
// http://www.fyireporting.com/forum/viewtopic.php?t=892
//A.S.> convert pt to px if needed(when printing we need px, when draw preview - pt)
RectangleF r2;
if (g.PageUnit == GraphicsUnit.Pixel)
{
r2 = new RectangleF(r.Left + (si.PaddingLeft * g.DpiX) / 72,
r.Top + (si.PaddingTop * g.DpiX) / 72,
r.Width - ((si.PaddingLeft + si.PaddingRight) * g.DpiX) / 72,
r.Height - ((si.PaddingTop + si.PaddingBottom) * g.DpiX) / 72);
}
else
{
// adjust drawing rectangle based on padding
r2 = new RectangleF(r.Left + si.PaddingLeft,
r.Top + si.PaddingTop,
r.Width - si.PaddingLeft - si.PaddingRight,
r.Height - si.PaddingTop - si.PaddingBottom);
}
drawBrush = new SolidBrush(si.Color);
if (si.TextAlign == TextAlignEnum.Justified)
{
GraphicsExtended.DrawStringJustified(g, pt.Text, drawFont, drawBrush, r2);
}
else if (pt.NoClip) // request not to clip text
{
g.DrawString(pt.Text, drawFont, drawBrush, new PointF(r.Left, r.Top), drawFormat);
}
else
{
g.DrawString(pt.Text, drawFont, drawBrush, r2, drawFormat);
}
}
finally
{
if (drawFont != null)
{
drawFont.Dispose();
}
if (drawFormat != null)
{
drawFont.Dispose();
}
if (drawBrush != null)
{
drawBrush.Dispose();
}
}
}
public static string[] MeasureString(PageText pt, Graphics g, out float[] width)
{
StyleInfo si = pt.SI;
string s = pt.Text;
System.Drawing.Font drawFont = null;
StringFormat drawFormat = null;
SizeF ms;
string[] sa = null;
width = null;
try
{
// STYLE
System.Drawing.FontStyle fs = 0;
if (si.FontStyle == FontStyleEnum.Italic)
fs |= System.Drawing.FontStyle.Italic;
// WEIGHT
switch (si.FontWeight)
{
case FontWeightEnum.Bold:
case FontWeightEnum.Bolder:
case FontWeightEnum.W500:
case FontWeightEnum.W600:
case FontWeightEnum.W700:
case FontWeightEnum.W800:
case FontWeightEnum.W900:
fs |= System.Drawing.FontStyle.Bold;
break;
default:
break;
}
drawFont = new System.Drawing.Font(StyleInfo.GetFontFamily(si.FontFamilyFull), si.FontSize, fs);
drawFormat = new StringFormat();
drawFormat.Alignment = StringAlignment.Near;
// Measure string
// pt.NoClip indicates that this was generated by PageTextHtml Build. It has already word wrapped.
if (pt.NoClip || pt.SI.WritingMode == WritingModeEnum.tb_rl) // TODO: support multiple lines for vertical text
{
ms = MeasureString(s, g, drawFont, drawFormat);
width = new float[1];
width[0] = Measurement.PointsFromPixels(ms.Width, g.DpiX); // convert to points from pixels
sa = new string[1];
sa[0] = s;
return sa;
}
// handle multiple lines;
// 1) split the string into the forced line breaks (ie "\n and \r")
// 2) foreach of the forced line breaks; break these into words and recombine
s = s.Replace("\r\n", "\n"); // don't want this to result in double lines
string[] flines = s.Split(LINEBREAK);
List<string> lines = new List<string>();
List<float> lineWidths = new List<float>();
// remove the size reserved for left and right padding
float ptWidth = pt.W - pt.SI.PaddingLeft - pt.SI.PaddingRight;
if (ptWidth <= 0)
ptWidth = 1;
foreach (string tfl in flines)
{
string fl;
if (tfl.Length > 0 && tfl[tfl.Length - 1] == ' ')
fl = tfl.TrimEnd(' ');
else
fl = tfl;
// Check if entire string fits into a line
ms = MeasureString(fl, g, drawFont, drawFormat);
float tw = Measurement.PointsFromPixels(ms.Width, g.DpiX);
if (tw <= ptWidth)
{ // line fits don't need to break it down further
lines.Add(fl);
lineWidths.Add(tw);
continue;
}
// Line too long; need to break into multiple lines
// 1) break line into parts; then build up again keeping track of word positions
string[] parts = fl.Split(WORDBREAK); // this is the maximum split of lines
StringBuilder sb = new StringBuilder(fl.Length);
CharacterRange[] cra = new CharacterRange[parts.Length];
for (int i = 0; i < parts.Length; i++)
{
int sc = sb.Length; // starting character
sb.Append(parts[i]); // endding character
if (i != parts.Length - 1) // last item doesn't need blank
sb.Append(" ");
int ec = sb.Length;
CharacterRange cr = new CharacterRange(sc, ec - sc);
cra[i] = cr; // add to character array
}
// 2) Measure the word locations within the line
string wfl = sb.ToString();
WordStartFinish[] wordLocations = MeasureString(wfl, g, drawFont, drawFormat, cra);
if (wordLocations == null)
continue;
// 3) Loop thru creating new lines as needed
int startLoc = 0;
CharacterRange crs = cra[startLoc];
CharacterRange cre = cra[startLoc];
float cwidth = wordLocations[0].end; // length of the first
float bwidth = wordLocations[0].start; // characters need a little extra on start
string ts;
bool bLine = true;
for (int i = 1; i < cra.Length; i++)
{
cwidth = wordLocations[i].end - wordLocations[startLoc].start + bwidth;
if (cwidth > ptWidth)
{ // time for a new line
cre = cra[i - 1];
ts = wfl.Substring(crs.First, cre.First + cre.Length - crs.First);
lines.Add(ts);
lineWidths.Add(wordLocations[i - 1].end - wordLocations[startLoc].start + bwidth);
// Find the first non-blank character of the next line
while (i < cra.Length &&
cra[i].Length == 1 &&
fl[cra[i].First] == ' ')
{
i++;
}
if (i < cra.Length) // any lines left?
{ // yes, continue on
startLoc = i;
crs = cre = cra[startLoc];
cwidth = wordLocations[i].end - wordLocations[startLoc].start + bwidth;
}
else // no, we can stop
bLine = false;
// bwidth = wordLocations[startLoc].start - wordLocations[startLoc - 1].end;
}
else
cre = cra[i];
}
if (bLine)
{
ts = fl.Substring(crs.First, cre.First + cre.Length - crs.First);
lines.Add(ts);
lineWidths.Add(cwidth);
}
}
// create the final array from the Lists
string[] la = lines.ToArray();
width = lineWidths.ToArray();
return la;
}
finally
{
if (drawFont != null)
drawFont.Dispose();
if (drawFormat != null)
drawFont.Dispose();
}
}
// render all the objects in a page (or any composite object
private void ProcessPage(Graphics g, IEnumerable p, RectangleF clipRect, bool bHitList)
{
// TODO: (Peter) Support can grow and can shrink
foreach (PageItem pi in p)
{
//if (pi is PageTextHtml)
//{ // PageTextHtml is actually a composite object (just like a page)
// if (SelectTool && bHitList)
// {
// RectangleF hr = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
// PixelsX(pi.W), PixelsY(pi.H));
// _HitList.Add(new HitListEntry(hr, pi));
// }
// ProcessHtml(pi as PageTextHtml, g, clipRect, bHitList);
// continue;
//}
if (pi is PageLine)
{
PageLine pl = pi as PageLine;
DrawLine(pl.SI.BColorLeft, pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X + _left - _hScroll), PixelsY(pl.Y + _top - _vScroll),
PixelsX(pl.X2 + _left - _hScroll), PixelsY(pl.Y2 + _top - _vScroll));
continue;
}
RectangleF rect = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
PixelsX(pi.W), PixelsY(pi.H));
// Maintain the hit list
//if (bHitList)
//{
// if (SelectTool)
// { // we need all PageText and PageImage items that have been displayed
// if (pi is PageText || pi is PageImage)
// {
// _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, _left - _hScroll, _top - _vScroll, this);
// else
// hle = new HitListEntry(rect, pi);
// _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;
DrawImageBackground(i, pi.SI, g, rect);
}
if (pi is PageText)
{
// TODO: enable can shrink, can grow
// 2005 spec file, page 9, in the text box has
// CanGrow and CanShrink
PageText pt = pi as PageText;
DrawString(pt, g, rect);
}
else if (pi is PageImage)
{
PageImage i = pi as PageImage;
DrawImage(i, g, rect);
}
else if (pi is PageRectangle)
{
this.DrawBackground(g, rect, pi.SI);
}
else if (pi is PageEllipse)
{
PageEllipse pe = pi as PageEllipse;
DrawEllipse(pe, g, rect);
}
else if (pi is PagePie)
{
PagePie pp = pi as PagePie;
DrawPie(pp, g, rect);
}
else if (pi is PagePolygon)
{
PagePolygon ppo = pi as PagePolygon;
FillPolygon(ppo, g, rect);
}
else if (pi is PageCurve)
{
PageCurve pc = pi as PageCurve;
DrawCurve(pc.SI.BColorLeft, pc.SI.BStyleLeft, pc.SI.BWidthLeft,
g, pc.Points, pc.Offset, pc.Tension);
}
DrawBorder(pi, g, rect);
}
}
private void ProcessPage(Cairo.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;
DrawLine(
pl.SI.BColorLeft.ToCairoColor(), pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X), PixelsY(pl.Y), PixelsX(pl.X2), PixelsY(pl.Y2)
);
continue;
}
// RectangleF rect = new RectangleF(PixelsX(pi.X), PixelsY(pi.Y), PixelsX(pi.W), PixelsY(pi.H));
Cairo.Rectangle rect = new Cairo.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);
}
// else if (pi is PageEllipse)
// {
// PageEllipse pe = pi as PageEllipse;
// DrawEllipse(pe, g, rect);
// }
// else if (pi is PagePie)
// {
// PagePie pp = pi as PagePie;
// DrawPie(pp, g, rect);
// }
// else if (pi is PagePolygon)
// {
// PagePolygon ppo = pi as PagePolygon;
// FillPolygon(ppo, g, rect);
// }
// else if (pi is PageCurve)
// {
// PageCurve pc = pi as PageCurve;
// DrawCurve(pc.SI.BColorLeft, pc.SI.BStyleLeft, pc.SI.BWidthLeft,
// g, pc.Points, pc.Offset, pc.Tension);
// }
//
DrawBorder(pi, g, rect);
}
}
private void DrawString(PageText pt, Cairo.Context g, Cairo.Rectangle r)
{
StyleInfo si = pt.SI;
string s = pt.Text;
g.Save();
layout = Pango.CairoHelper.CreateLayout(g);
// Font drawFont = null;
// StringFormat drawFormat = null;
// Brush drawBrush = null;
// STYLE
// System.Drawing.FontStyle fs = 0;
// if (si.FontStyle == FontStyleEnum.Italic)
// fs |= System.Drawing.FontStyle.Italic;
//Pango fonts are scaled to 72dpi, Windows fonts uses 96dpi
float fontsize = (si.FontSize * 72 / 96);
var font = Pango.FontDescription.FromString(string.Format("{0} {1}", si.GetFontFamily().Name,
fontsize * PixelsX(1)));
if (si.FontStyle == FontStyleEnum.Italic)
{
font.Style = Pango.Style.Italic;
}
//
// switch (si.TextDecoration)
// {
// case TextDecorationEnum.Underline:
// fs |= System.Drawing.FontStyle.Underline;
// break;
// case TextDecorationEnum.LineThrough:
// fs |= System.Drawing.FontStyle.Strikeout;
// break;
// case TextDecorationEnum.Overline:
// case TextDecorationEnum.None:
// break;
// }
// WEIGHT
// switch (si.FontWeight)
// {
// case FontWeightEnum.Bold:
// case FontWeightEnum.Bolder:
// case FontWeightEnum.W500:
// case FontWeightEnum.W600:
// case FontWeightEnum.W700:
// case FontWeightEnum.W800:
// case FontWeightEnum.W900:
// fs |= System.Drawing.FontStyle.Bold;
// break;
// default:
// break;
// }
// try
// {
// drawFont = new Font(si.GetFontFamily(), si.FontSize, fs); // si.FontSize already in points
// }
// catch (ArgumentException)
// {
// drawFont = new Font("Arial", si.FontSize, fs); // if this fails we'll let the error pass thru
// }
//font.AbsoluteSize = (int)(PixelsX (si.FontSize));
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 = Pango.Weight.Bold;
break;
}
Pango.FontDescription oldfont = layout.FontDescription;
layout.FontDescription = font;
// ALIGNMENT
// drawFormat = new StringFormat();
// switch (si.TextAlign)
// {
// case TextAlignEnum.Right:
// drawFormat.Alignment = StringAlignment.Far;
// break;
// case TextAlignEnum.Center:
// drawFormat.Alignment = StringAlignment.Center;
// break;
// case TextAlignEnum.Left:
// default:
// drawFormat.Alignment = StringAlignment.Near;
// break;
// }
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;
}
layout.Width = Pango.Units.FromPixels((int)(r.Width - si.PaddingLeft - si.PaddingRight - 2));
// layout.Width = (int)Pango.Units.FromPixels((int)r.Width);
layout.SetText(s);
// if (pt.SI.WritingMode == WritingModeEnum.tb_rl)
// {
// drawFormat.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
// drawFormat.FormatFlags |= StringFormatFlags.DirectionVertical;
// }
// switch (si.VerticalAlign)
// {
// case VerticalAlignEnum.Bottom:
// drawFormat.LineAlignment = StringAlignment.Far;
// break;
// case VerticalAlignEnum.Middle:
// drawFormat.LineAlignment = StringAlignment.Center;
// break;
// case VerticalAlignEnum.Top:
// default:
// drawFormat.LineAlignment = StringAlignment.Near;
// break;
// }
//
Pango.Rectangle logical;
Pango.Rectangle ink;
layout.GetExtents(out ink, out logical);
double height = 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);
// adjust drawing rectangle based on padding
// Cairo.Rectangle r2 = new Cairo.Rectangle(r.X + si.PaddingLeft,
// r.Y + si.PaddingTop,
// r.Width - si.PaddingLeft - si.PaddingRight,
// r.Height - si.PaddingTop - si.PaddingBottom);
Cairo.Rectangle box = new Cairo.Rectangle(
r.X + si.PaddingLeft + 1,
y,
r.Width,
r.Height);
//drawBrush = new SolidBrush(si.Color);
g.Color = si.Color.ToCairoColor();
// if (pt.NoClip) // request not to clip text
// {
// g.DrawString(pt.Text, drawFont, drawBrush, new PointF(r.Left, r.Top), drawFormat);
// //HighlightString(g, pt, new RectangleF(r.Left, r.Top, float.MaxValue, float.MaxValue),drawFont, drawFormat);
// }
// else
// {
// g.DrawString(pt.Text, drawFont, drawBrush, r2, drawFormat);
// //HighlightString(g, pt, r2, drawFont, drawFormat);
// }
g.MoveTo(box.X, box.Y);
Pango.CairoHelper.ShowLayout(g, layout);
layout.FontDescription = oldfont;
g.Restore();
}
// render all the objects in a page (or any composite object
private void ProcessPage(Graphics g, IEnumerable p, RectangleF clipRect, bool bHitList)
{
foreach (PageItem pi in p)
{
if (pi is PageTextHtml)
{ // PageTextHtml is actually a composite object (just like a page)
if (SelectTool && bHitList)
{
RectangleF hr = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
PixelsX(pi.W), PixelsY(pi.H));
_HitList.Add(new HitListEntry(hr, pi));
}
ProcessHtml(pi as PageTextHtml, g, clipRect, bHitList);
continue;
}
if (pi is PageLine)
{
PageLine pl = pi as PageLine;
DrawLine(pl.SI.BColorLeft, pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X + _left - _hScroll), PixelsY(pl.Y + _top - _vScroll),
PixelsX(pl.X2 + _left - _hScroll), PixelsY(pl.Y2 + _top - _vScroll));
continue;
}
RectangleF rect = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
PixelsX(pi.W), PixelsY(pi.H));
// Maintain the hit list
if (bHitList)
{
if (SelectTool)
{ // we need all PageText and PageImage items that have been displayed
if (pi is PageText || pi is PageImage)
{
_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)
{
_HitList.Add(new HitListEntry(rect, pi));
}
}
if (!rect.IntersectsWith(clipRect))
{
continue;
}
if (pi.SI.BackgroundImage != null)
{ // put out any background image
PageImage i = pi.SI.BackgroundImage;
DrawImageBackground(i, pi.SI, g, rect);
}
if (pi is PageText)
{
PageText pt = pi as PageText;
DrawString(pt, g, rect);
}
else if (pi is PageImage)
{
PageImage i = pi as PageImage;
DrawImage(i, g, rect);
}
else if (pi is PageRectangle)
{
this.DrawBackground(g, rect, pi.SI);
}
DrawBorder(pi, g, rect);
}
}
private void HighlightString(Graphics g, PageText dtext, RectangleF r, Font f, StringFormat sf)
{
if (_HighlightText == null || _HighlightText.Length == 0)
{
return; // nothing to highlight
}
bool bhighlightItem = dtext == _HighlightItem ||
(_HighlightItem != null && dtext.HtmlParent == _HighlightItem);
if (!(_HighlightAll || bhighlightItem))
{
return; // not highlighting all and not on current highlight item
}
string hlt = _HighlightCaseSensitive ? _HighlightText : _HighlightText.ToLower();
string text = _HighlightCaseSensitive ? dtext.Text : dtext.Text.ToLower();
if (text.IndexOf(hlt) < 0)
{
return; // string not in text
}
StringFormat sf2 = null;
try
{
// Create a CharacterRange array with the highlight location and length
// Handle multiple occurences of text
List <CharacterRange> rangel = new List <CharacterRange>();
int loc = text.IndexOf(hlt);
int hlen = hlt.Length;
int len = text.Length;
while (loc >= 0)
{
rangel.Add(new CharacterRange(loc, hlen));
if (loc + hlen < len) // out of range of text
{
loc = text.IndexOf(hlt, loc + hlen);
}
else
{
loc = -1;
}
}
if (rangel.Count <= 0) // we should have gotten one; but
{
return;
}
CharacterRange[] ranges = rangel.ToArray();
// Construct a new StringFormat object.
sf2 = sf.Clone() as StringFormat;
// Set the ranges on the StringFormat object.
sf2.SetMeasurableCharacterRanges(ranges);
// Get the Regions to highlight by calling the
// MeasureCharacterRanges method.
Region[] charRegion = g.MeasureCharacterRanges(dtext.Text, f, r, sf2);
// Fill in the region using a semi-transparent color to highlight
foreach (Region rg in charRegion)
{
Color hl = bhighlightItem ? _HighlightItemColor : _HighlightAllColor;
g.FillRegion(new SolidBrush(Color.FromArgb(50, hl)), rg);
}
}
catch { } // if highlighting fails we don't care; need to continue
finally
{
if (sf2 != null)
{
sf2.Dispose();
}
}
}
private void DrawString(PageText pt, Graphics g, RectangleF r)
{
StyleInfo si = pt.SI;
string s = pt.Text;
Font drawFont = null;
StringFormat drawFormat = null;
Brush drawBrush = null;
try
{
// STYLE
System.Drawing.FontStyle fs = 0;
if (si.FontStyle == FontStyleEnum.Italic)
{
fs |= System.Drawing.FontStyle.Italic;
}
switch (si.TextDecoration)
{
case TextDecorationEnum.Underline:
fs |= System.Drawing.FontStyle.Underline;
break;
case TextDecorationEnum.LineThrough:
fs |= System.Drawing.FontStyle.Strikeout;
break;
case TextDecorationEnum.Overline:
case TextDecorationEnum.None:
break;
}
// WEIGHT
switch (si.FontWeight)
{
case FontWeightEnum.Bold:
case FontWeightEnum.Bolder:
case FontWeightEnum.W500:
case FontWeightEnum.W600:
case FontWeightEnum.W700:
case FontWeightEnum.W800:
case FontWeightEnum.W900:
fs |= System.Drawing.FontStyle.Bold;
break;
default:
break;
}
try
{
drawFont = new Font(si.GetFontFamily(), si.FontSize, fs); // si.FontSize already in points
}
catch (ArgumentException)
{
drawFont = new Font("Arial", si.FontSize, fs); // if this fails we'll let the error pass thru
}
// ALIGNMENT
drawFormat = new StringFormat();
switch (si.TextAlign)
{
case TextAlignEnum.Right:
drawFormat.Alignment = StringAlignment.Far;
break;
case TextAlignEnum.Center:
drawFormat.Alignment = StringAlignment.Center;
break;
case TextAlignEnum.Left:
default:
drawFormat.Alignment = StringAlignment.Near;
break;
}
if (pt.SI.WritingMode == WritingModeEnum.tb_rl)
{
drawFormat.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
drawFormat.FormatFlags |= StringFormatFlags.DirectionVertical;
}
switch (si.VerticalAlign)
{
case VerticalAlignEnum.Bottom:
drawFormat.LineAlignment = StringAlignment.Far;
break;
case VerticalAlignEnum.Middle:
drawFormat.LineAlignment = StringAlignment.Center;
break;
case VerticalAlignEnum.Top:
default:
drawFormat.LineAlignment = StringAlignment.Near;
break;
}
// draw the background
DrawBackground(g, r, si);
// adjust drawing rectangle based on padding
RectangleF r2 = new RectangleF(r.Left + si.PaddingLeft,
r.Top + si.PaddingTop,
r.Width - si.PaddingLeft - si.PaddingRight,
r.Height - si.PaddingTop - si.PaddingBottom);
drawBrush = new SolidBrush(si.Color);
if (pt.NoClip) // request not to clip text
{
g.DrawString(pt.Text, drawFont, drawBrush, new PointF(r.Left, r.Top), drawFormat);
HighlightString(g, pt, new RectangleF(r.Left, r.Top, float.MaxValue, float.MaxValue),
drawFont, drawFormat);
}
else
{
g.DrawString(pt.Text, drawFont, drawBrush, r2, drawFormat);
HighlightString(g, pt, r2, drawFont, drawFormat);
}
if (SelectTool)
{
if (pt.AllowSelect && _SelectList.Contains(pt))
{
g.FillRectangle(new SolidBrush(Color.FromArgb(50, _SelectItemColor)), r2);
}
}
}
finally
{
if (drawFont != null)
{
drawFont.Dispose();
}
if (drawFormat != null)
{
drawFont.Dispose();
}
if (drawBrush != null)
{
drawBrush.Dispose();
}
}
}
