/** Shows a line of text. Only the first line is written.
* @param canvas where the text is to be written to
* @param alignment the alignment. It is not influenced by the run direction
* @param phrase the <CODE>Phrase</CODE> with the text
* @param x the x reference position
* @param y the y reference position
* @param rotation the rotation to be applied in degrees counterclockwise
* @param runDirection the run direction
* @param arabicOptions the options for the arabic shaping
*/
public static void ShowTextAligned(PdfContentByte canvas, int alignment, Phrase phrase, float x, float y, float rotation, int runDirection, int arabicOptions)
{
if (alignment != Element.ALIGN_LEFT && alignment != Element.ALIGN_CENTER
&& alignment != Element.ALIGN_RIGHT)
alignment = Element.ALIGN_LEFT;
canvas.SaveState();
ColumnText ct = new ColumnText(canvas);
float lly = -1;
float ury = 2;
float llx;
float urx;
switch (alignment) {
case Element.ALIGN_LEFT:
llx = 0;
urx = 20000;
break;
case Element.ALIGN_RIGHT:
llx = -20000;
urx = 0;
break;
default:
llx = -20000;
urx = 20000;
break;
}
if (rotation == 0) {
llx += x;
lly += y;
urx += x;
ury += y;
}
else {
double alpha = rotation * Math.PI / 180.0;
float cos = (float)Math.Cos(alpha);
float sin = (float)Math.Sin(alpha);
canvas.ConcatCTM(cos, sin, -sin, cos, x, y);
}
ct.SetSimpleColumn(phrase, llx, lly, urx, ury, 2, alignment);
if (runDirection == PdfWriter.RUN_DIRECTION_RTL) {
if (alignment == Element.ALIGN_LEFT)
alignment = Element.ALIGN_RIGHT;
else if (alignment == Element.ALIGN_RIGHT)
alignment = Element.ALIGN_LEFT;
}
ct.Alignment = alignment;
ct.ArabicOptions = arabicOptions;
ct.RunDirection = runDirection;
ct.Go();
canvas.RestoreState();
}
/**
* Get the <code>PdfAppearance</code> of a text or combo field
* @throws IOException on error
* @throws DocumentException on error
* @return A <code>PdfAppearance</code>
*/
public PdfAppearance GetAppearance()
{
PdfAppearance app = GetBorderAppearance();
app.BeginVariableText();
if (text == null || text.Length == 0) {
app.EndVariableText();
return app;
}
bool borderExtra = borderStyle == PdfBorderDictionary.STYLE_BEVELED || borderStyle == PdfBorderDictionary.STYLE_INSET;
float h = box.Height - borderWidth * 2 - extraMarginTop;
float bw2 = borderWidth;
if (borderExtra) {
h -= borderWidth * 2;
bw2 *= 2;
}
float offsetX = Math.Max(bw2, 1);
float offX = Math.Min(bw2, offsetX);
app.SaveState();
app.Rectangle(offX, offX, box.Width - 2 * offX, box.Height - 2 * offX);
app.Clip();
app.NewPath();
String ptext;
if ((options & PASSWORD) != 0)
ptext = ObfuscatePassword(text);
else if ((options & MULTILINE) == 0)
ptext = RemoveCRLF(text);
else
ptext = text; //fixed by Kazuya Ujihara (ujihara.jp)
BaseFont ufont = RealFont;
Color fcolor = (textColor == null) ? GrayColor.GRAYBLACK : textColor;
int rtl = CheckRTL(ptext) ? PdfWriter.RUN_DIRECTION_LTR : PdfWriter.RUN_DIRECTION_NO_BIDI;
float usize = fontSize;
Phrase phrase = ComposePhrase(ptext, ufont, fcolor, usize);
if ((options & MULTILINE) != 0) {
float width = box.Width - 4 * offsetX - extraMarginLeft;
float factor = ufont.GetFontDescriptor(BaseFont.BBOXURY, 1) - ufont.GetFontDescriptor(BaseFont.BBOXLLY, 1);
ColumnText ct = new ColumnText(null);
if (usize == 0) {
usize = h / factor;
if (usize > 4) {
if (usize > 12)
usize = 12;
float step = Math.Max((usize - 4) / 10, 0.2f);
ct.SetSimpleColumn(0, -h, width, 0);
ct.Alignment = alignment;
ct.RunDirection = rtl;
for (; usize > 4; usize -= step) {
ct.YLine = 0;
ChangeFontSize(phrase, usize);
ct.SetText(phrase);
ct.Leading = factor * usize;
int status = ct.Go(true);
if ((status & ColumnText.NO_MORE_COLUMN) == 0)
break;
}
}
if (usize < 4) {
usize = 4;
}
}
ChangeFontSize(phrase, usize);
ct.Canvas = app;
float leading = usize * factor;
float offsetY = offsetX + h - ufont.GetFontDescriptor(BaseFont.BBOXURY, usize);
ct.SetSimpleColumn(extraMarginLeft + 2 * offsetX, -20000, box.Width - 2 * offsetX, offsetY + leading);
ct.Leading = leading;
ct.Alignment = alignment;
ct.RunDirection = rtl;
ct.SetText(phrase);
ct.Go();
}
else {
if (usize == 0) {
float maxCalculatedSize = h / (ufont.GetFontDescriptor(BaseFont.BBOXURX, 1) - ufont.GetFontDescriptor(BaseFont.BBOXLLY, 1));
ChangeFontSize(phrase, 1);
float wd = ColumnText.GetWidth(phrase, rtl, 0);
if (wd == 0)
usize = maxCalculatedSize;
else
usize = Math.Min(maxCalculatedSize, (box.Width - extraMarginLeft - 4 * offsetX) / wd);
if (usize < 4)
usize = 4;
}
ChangeFontSize(phrase, usize);
float offsetY = offX + ((box.Height - 2*offX) - ufont.GetFontDescriptor(BaseFont.ASCENT, usize)) / 2;
if (offsetY < offX)
offsetY = offX;
if (offsetY - offX < -ufont.GetFontDescriptor(BaseFont.DESCENT, usize)) {
float ny = -ufont.GetFontDescriptor(BaseFont.DESCENT, usize) + offX;
float dy = box.Height - offX - ufont.GetFontDescriptor(BaseFont.ASCENT, usize);
offsetY = Math.Min(ny, Math.Max(offsetY, dy));
}
if ((options & COMB) != 0 && maxCharacterLength > 0) {
int textLen = Math.Min(maxCharacterLength, ptext.Length);
int position = 0;
if (alignment == Element.ALIGN_RIGHT) {
position = maxCharacterLength - textLen;
}
else if (alignment == Element.ALIGN_CENTER) {
position = (maxCharacterLength - textLen) / 2;
}
float step = (box.Width - extraMarginLeft) / maxCharacterLength;
float start = step / 2 + position * step;
if (textColor == null)
app.SetGrayFill(0);
else
app.SetColorFill(textColor);
app.BeginText();
foreach (Chunk ck in phrase) {
BaseFont bf = ck.Font.BaseFont;
app.SetFontAndSize(bf, usize);
StringBuilder sb = ck.Append("");
for (int j = 0; j < sb.Length; ++j) {
String c = sb.ToString(j, 1);
float wd = bf.GetWidthPoint(c, usize);
app.SetTextMatrix(extraMarginLeft + start - wd / 2, offsetY - extraMarginTop);
app.ShowText(c);
start += step;
}
}
app.EndText();
}
else {
float x;
switch (alignment) {
case Element.ALIGN_RIGHT:
x = extraMarginLeft + box.Width - (2 * offsetX);
break;
case Element.ALIGN_CENTER:
x = extraMarginLeft + (box.Width / 2);
break;
default:
x = extraMarginLeft + (2 * offsetX);
break;
}
ColumnText.ShowTextAligned(app, alignment, phrase, x, offsetY - extraMarginTop, 0, rtl, 0);
}
}
app.RestoreState();
app.EndVariableText();
return app;
}
/**
* Gets the main appearance layer.
* <p>
* Consult <A HREF="http://partners.adobe.com/asn/developer/pdfs/tn/PPKAppearances.pdf">PPKAppearances.pdf</A>
* for further details.
* @return the main appearance layer
* @throws DocumentException on error
* @throws IOException on error
*/
public PdfTemplate GetAppearance()
{
if (IsInvisible()) {
PdfTemplate t = new PdfTemplate(writer);
t.BoundingBox = new Rectangle(0, 0);
writer.AddDirectTemplateSimple(t, null);
return t;
}
if (app[0] == null) {
PdfTemplate t = app[0] = new PdfTemplate(writer);
t.BoundingBox = new Rectangle(100, 100);
writer.AddDirectTemplateSimple(t, new PdfName("n0"));
t.SetLiteral("% DSBlank\n");
}
if (app[1] == null && !acro6Layers) {
PdfTemplate t = app[1] = new PdfTemplate(writer);
t.BoundingBox = new Rectangle(100, 100);
writer.AddDirectTemplateSimple(t, new PdfName("n1"));
t.SetLiteral(questionMark);
}
if (app[2] == null) {
String text;
if (layer2Text == null) {
StringBuilder buf = new StringBuilder();
buf.Append("Digitally signed by ").Append(PdfPKCS7.GetSubjectFields((X509Certificate)certChain[0]).GetField("CN")).Append('\n');
buf.Append("Date: ").Append(signDate.ToString("yyyy.MM.dd HH:mm:ss zzz"));
if (reason != null)
buf.Append('\n').Append("Reason: ").Append(reason);
if (location != null)
buf.Append('\n').Append("Location: ").Append(location);
text = buf.ToString();
}
else
text = layer2Text;
PdfTemplate t = app[2] = new PdfTemplate(writer);
t.BoundingBox = rect;
writer.AddDirectTemplateSimple(t, new PdfName("n2"));
if (image != null) {
if (imageScale == 0) {
t.AddImage(image, rect.Width, 0, 0, rect.Height, 0, 0);
}
else {
float usableScale = imageScale;
if (imageScale < 0)
usableScale = Math.Min(rect.Width / image.Width, rect.Height / image.Height);
float w = image.Width * usableScale;
float h = image.Height * usableScale;
float x = (rect.Width - w) / 2;
float y = (rect.Height - h) / 2;
t.AddImage(image, w, 0, 0, h, x, y);
}
}
Font font;
if (layer2Font == null)
font = new Font();
else
font = new Font(layer2Font);
float size = font.Size;
Rectangle dataRect = null;
Rectangle signatureRect = null;
if (Render == SignatureRender.NameAndDescription ||
(Render == SignatureRender.GraphicAndDescription && this.SignatureGraphic != null)) {
// origin is the bottom-left
signatureRect = new Rectangle(
MARGIN,
MARGIN,
rect.Width / 2 - MARGIN,
rect.Height - MARGIN);
dataRect = new Rectangle(
rect.Width / 2 + MARGIN / 2,
MARGIN,
rect.Width - MARGIN / 2,
rect.Height - MARGIN);
if (rect.Height > rect.Width) {
signatureRect = new Rectangle(
MARGIN,
rect.Height / 2,
rect.Width - MARGIN,
rect.Height);
dataRect = new Rectangle(
MARGIN,
MARGIN,
rect.Width - MARGIN,
rect.Height / 2 - MARGIN);
}
}
else {
dataRect = new Rectangle(
MARGIN,
MARGIN,
rect.Width - MARGIN,
rect.Height * (1 - TOP_SECTION) - MARGIN);
}
if (Render == SignatureRender.NameAndDescription) {
string signedBy = Legacy.Text.Pdf.PdfPKCS7.GetSubjectFields(this.certChain[0]).GetField("CN");
Rectangle sr2 = new Rectangle(signatureRect.Width - MARGIN, signatureRect.Height - MARGIN );
float signedSize = FitText(font, signedBy, sr2, -1, runDirection);
ColumnText ct2 = new ColumnText(t);
ct2.RunDirection = runDirection;
ct2.SetSimpleColumn(new Phrase(signedBy, font), signatureRect.Left, signatureRect.Bottom, signatureRect.Right, signatureRect.Top, signedSize, Element.ALIGN_LEFT);
ct2.Go();
}
else if (Render == SignatureRender.GraphicAndDescription) {
ColumnText ct2 = new ColumnText(t);
ct2.RunDirection = runDirection;
ct2.SetSimpleColumn(signatureRect.Left, signatureRect.Bottom, signatureRect.Right, signatureRect.Top, 0, Element.ALIGN_RIGHT);
Image im = Image.GetInstance(SignatureGraphic);
im.ScaleToFit(signatureRect.Width, signatureRect.Height);
Paragraph p = new Paragraph();
// must calculate the point to draw from to make image appear in middle of column
float x = 0;
// experimentation found this magic number to counteract Adobe's signature graphic, which
// offsets the y co-ordinate by 15 units
float y = -im.ScaledHeight + 15;
x = x + (signatureRect.Width - im.ScaledWidth) / 2;
y = y - (signatureRect.Height - im.ScaledHeight) / 2;
p.Add(new Chunk(im, x + (signatureRect.Width - im.ScaledWidth) / 2, y, false));
ct2.AddElement(p);
ct2.Go();
}
if (size <= 0) {
Rectangle sr = new Rectangle(dataRect.Width, dataRect.Height);
size = FitText(font, text, sr, 12, runDirection);
}
ColumnText ct = new ColumnText(t);
ct.RunDirection = runDirection;
ct.SetSimpleColumn(new Phrase(text, font), dataRect.Left, dataRect.Bottom, dataRect.Right, dataRect.Top, size, Element.ALIGN_LEFT);
ct.Go();
}
if (app[3] == null && !acro6Layers) {
PdfTemplate t = app[3] = new PdfTemplate(writer);
t.BoundingBox = new Rectangle(100, 100);
writer.AddDirectTemplateSimple(t, new PdfName("n3"));
t.SetLiteral("% DSBlank\n");
}
if (app[4] == null && !acro6Layers) {
PdfTemplate t = app[4] = new PdfTemplate(writer);
t.BoundingBox = new Rectangle(0, rect.Height * (1 - TOP_SECTION), rect.Right, rect.Top);
writer.AddDirectTemplateSimple(t, new PdfName("n4"));
Font font;
if (layer2Font == null)
font = new Font();
else
font = new Font(layer2Font);
float size = font.Size;
String text = "Signature Not Verified";
if (layer4Text != null)
text = layer4Text;
Rectangle sr = new Rectangle(rect.Width - 2 * MARGIN, rect.Height * TOP_SECTION - 2 * MARGIN);
size = FitText(font, text, sr, 15, runDirection);
ColumnText ct = new ColumnText(t);
ct.RunDirection = runDirection;
ct.SetSimpleColumn(new Phrase(text, font), MARGIN, 0, rect.Width - MARGIN, rect.Height - MARGIN, size, Element.ALIGN_LEFT);
ct.Go();
}
int rotation = writer.reader.GetPageRotation(page);
Rectangle rotated = new Rectangle(rect);
int n = rotation;
while (n > 0) {
rotated = rotated.Rotate();
n -= 90;
}
if (frm == null) {
frm = new PdfTemplate(writer);
frm.BoundingBox = rotated;
writer.AddDirectTemplateSimple(frm, new PdfName("FRM"));
float scale = Math.Min(rect.Width, rect.Height) * 0.9f;
float x = (rect.Width - scale) / 2;
float y = (rect.Height - scale) / 2;
scale /= 100;
if (rotation == 90)
frm.ConcatCTM(0, 1, -1, 0, rect.Height, 0);
else if (rotation == 180)
frm.ConcatCTM(-1, 0, 0, -1, rect.Width, rect.Height);
else if (rotation == 270)
frm.ConcatCTM(0, -1, 1, 0, 0, rect.Width);
frm.AddTemplate(app[0], 0, 0);
if (!acro6Layers)
frm.AddTemplate(app[1], scale, 0, 0, scale, x, y);
frm.AddTemplate(app[2], 0, 0);
if (!acro6Layers) {
frm.AddTemplate(app[3], scale, 0, 0, scale, x, y);
frm.AddTemplate(app[4], 0, 0);
}
}
PdfTemplate napp = new PdfTemplate(writer);
napp.BoundingBox = rotated;
writer.AddDirectTemplateSimple(napp, null);
napp.AddTemplate(frm, 0, 0);
return napp;
}
/**
* Fits the text to some rectangle adjusting the font size as needed.
* @param font the font to use
* @param text the text
* @param rect the rectangle where the text must fit
* @param maxFontSize the maximum font size
* @param runDirection the run direction
* @return the calculated font size that makes the text fit
*/
public static float FitText(Font font, String text, Rectangle rect, float maxFontSize, int runDirection)
{
ColumnText ct = null;
int status = 0;
if (maxFontSize <= 0) {
int cr = 0;
int lf = 0;
char[] t = text.ToCharArray();
for (int k = 0; k < t.Length; ++k) {
if (t[k] == '\n')
++lf;
else if (t[k] == '\r')
++cr;
}
int minLines = Math.Max(cr, lf) + 1;
maxFontSize = Math.Abs(rect.Height) / minLines - 0.001f;
}
font.Size = maxFontSize;
Phrase ph = new Phrase(text, font);
ct = new ColumnText(null);
ct.SetSimpleColumn(ph, rect.Left, rect.Bottom, rect.Right, rect.Top, maxFontSize, Element.ALIGN_LEFT);
ct.RunDirection = runDirection;
status = ct.Go(true);
if ((status & ColumnText.NO_MORE_TEXT) != 0)
return maxFontSize;
float precision = 0.1f;
float min = 0;
float max = maxFontSize;
float size = maxFontSize;
for (int k = 0; k < 50; ++k) { //just in case it doesn't converge
size = (min + max) / 2;
ct = new ColumnText(null);
font.Size = size;
ct.SetSimpleColumn(new Phrase(text, font), rect.Left, rect.Bottom, rect.Right, rect.Top, size, Element.ALIGN_LEFT);
ct.RunDirection = runDirection;
status = ct.Go(true);
if ((status & ColumnText.NO_MORE_TEXT) != 0) {
if (max - min < size * precision)
return size;
min = size;
}
else
max = size;
}
return size;
}
/**
* @since 3.0.0 protected is now public static
*/
public static float SetColumn(ColumnText ct, float left, float bottom, float right, float top)
{
if (left > right)
right = left;
if (bottom > top)
top = bottom;
ct.SetSimpleColumn(left, bottom, right, top);
return top;
}
// [M4] Adding a PdfPTable
/** Adds a <CODE>PdfPTable</CODE> to the document.
* @param ptable the <CODE>PdfPTable</CODE> to be added to the document.
* @throws DocumentException on error
*/
internal void AddPTable(PdfPTable ptable)
{
ColumnText ct = new ColumnText(writer.DirectContent);
// if the table prefers to be on a single page, and it wouldn't
//fit on the current page, start a new page.
if (ptable.KeepTogether && !FitsPage(ptable, 0f) && currentHeight > 0) {
NewPage();
}
// add dummy paragraph if we aren't at the top of a page, so that
// spacingBefore will be taken into account by ColumnText
if (currentHeight > 0) {
Paragraph p = new Paragraph();
p.Leading = 0;
ct.AddElement(p);
}
ct.AddElement(ptable);
bool he = ptable.HeadersInEvent;
ptable.HeadersInEvent = true;
int loop = 0;
while (true) {
ct.SetSimpleColumn(IndentLeft, IndentBottom, IndentRight, IndentTop - currentHeight);
int status = ct.Go();
if ((status & ColumnText.NO_MORE_TEXT) != 0) {
text.MoveText(0, ct.YLine - IndentTop + currentHeight);
currentHeight = IndentTop - ct.YLine;
break;
}
if (IndentTop - currentHeight == ct.YLine)
++loop;
else
loop = 0;
if (loop == 3) {
Add(new Paragraph("ERROR: Infinite table loop"));
break;
}
NewPage();
}
ptable.HeadersInEvent = he;
}
