private void SplitChunk(BBTextChunk chunk, int index, string head, string tail, ref int chunksCount)
{
chunk.Text = head;
if (!string.IsNullOrEmpty(tail))
{
var newChunk = chunk.Clone();
newChunk.Text = tail;
fChunks.Insert(index + 1, newChunk);
chunksCount += 1;
ShiftChunks(index + 1, chunksCount);
}
}
private void ArrangeText()
{
try {
fAcceptFontChange = false;
fHeights.Clear();
Graphics gfx = CreateGraphics();
//gfx.TextRenderingHint = TextRenderingHint.AntiAlias;
try {
int xPos = 0;
int yPos = 0;
int xMax = 0;
int lineHeight = 0;
string text = fLines.Text;
Font defFont = this.Font;
SizeF csz = this.ClientSize;
SizeF zerosz = new SizeF(0f, 0f);
var parser = new BBTextParser(AppHost.GfxProvider, defFont.SizeInPoints,
new ColorHandler(fLinkColor), new ColorHandler(ForeColor));
parser.ParseText(fChunks, text);
int line = -1;
int chunksCount = fChunks.Count;
int k = 0;
while (k < chunksCount)
{
BBTextChunk chunk = fChunks[k];
bool recalcChunk = false;
if (line != chunk.Line)
{
line = chunk.Line;
if (line > 0)
{
yPos += lineHeight;
fHeights.Add(lineHeight);
}
xPos = 0;
lineHeight = 0;
}
int prevX = xPos;
int prevY = yPos;
string chunkStr = chunk.Text;
if (!string.IsNullOrEmpty(chunkStr))
{
using (var font = new Font(defFont.Name, chunk.Size, (sdFontStyle)chunk.Style, defFont.Unit)) {
SizeF strSize = gfx.MeasureString(chunkStr, font, zerosz, fStrFormat);
if (fWordWrap)
{
int wBound = xPos + 2 * fBorderWidth;
if (wBound + strSize.Width > csz.Width)
{
int lastIndex = chunkStr.Length - 1;
while (true)
{
int spPos = chunkStr.LastIndexOf(' ', lastIndex);
if (spPos <= 0)
{
// the beginning of the chunk is reached and there are no more words to carry
chunk.Text = chunkStr.Substring(0, lastIndex + 1);
strSize = gfx.MeasureString(chunkStr, font, zerosz, fStrFormat);
// the current chunk still does not fit into the area
if (wBound + strSize.Width > csz.Width)
{
// this is not the only chunk on this line
if (k > 0 && fChunks[k - 1].Line == chunk.Line)
{
// transfer the current chunk to the next line
// and recount it again at the next iteration
ShiftChunks(k, chunksCount);
recalcChunk = true;
}
}
break;
}
string newChunk = chunkStr.Substring(0, spPos);
strSize = gfx.MeasureString(newChunk, font, zerosz, fStrFormat);
if (wBound + strSize.Width < csz.Width)
{
var secondPart = chunk.Clone();
secondPart.Text = chunkStr.Substring(spPos + 1);
secondPart.Line += 1;
fChunks.Insert(k + 1, secondPart);
chunksCount += 1;
// shift next chunks
ShiftChunks(k + 2, chunksCount);
chunk.Text = newChunk;
break;
}
else
{
lastIndex = spPos - 1;
}
}
}
}
chunk.Width = (int)strSize.Width;
xPos += chunk.Width;
if (xMax < xPos)
{
xMax = xPos;
}
int h = (int)strSize.Height;
if (lineHeight < h)
{
lineHeight = h;
}
}
if (!string.IsNullOrEmpty(chunk.URL))
{
chunk.LinkRect = ExtRect.CreateBounds(prevX, prevY, xPos - prevX, lineHeight);
}
}
if (!recalcChunk)
{
k++;
}
}
fTextSize = new ExtSize(xMax + 2 * fBorderWidth, yPos + 2 * fBorderWidth);
} finally {
gfx.Dispose();
fAcceptFontChange = true;
AdjustViewport(fTextSize);
}
} catch (Exception ex) {
Logger.LogWrite("HyperView.ArrangeText(): " + ex.Message);
}
}