public void visit(TableData element)
{
// Opening tag.
mStringBuilder.Append("<td");
// Add colour if required.
Color original = this.mCurrentBackground;
if (element.BackgroundColour.Equals (this.mCurrentBackground) == false) {
mStringBuilder.AppendFormat(" bgcolor={0}", ColorTranslator.ToHtml(element.BackgroundColour));
this.mCurrentBackground = element.BackgroundColour;
}
// If no nested tag add width and height.
if (element.ChildElement == null) {
mStringBuilder.AppendFormat(" width={0} height={1}", element.Width, element.Height);
}
if (element.ColumnSpan > 1) {
mStringBuilder.AppendFormat (" colspan={0}", element.ColumnSpan);
}
mStringBuilder.Append (">");
// If this is a nested tag, recurse.
if (element.ChildElement != null) {
element.ChildElement.accept(this);
}
// Closing tag.
mStringBuilder.Append ( "</td>");
// Reset background colour.
this.mCurrentBackground = original;
}
public void generateTable(Image img, Table tbl)
{
Tree tree = BuildQuadtree (img);
// Create initial row and cell.
TableRow tbr = new TableRow();
TableData tbd = new TableData();
tbr.Cells.Add(tbd);
tbl.Rows.Add(tbr);
// Generate into cell.
recursivelyGenerateTable(tree.RootNode, tbd);
}
private void recursivelyGenerateTable(Node current, TableData tbd)
{
if (current.IsLeaf == false) {
// If not a leaf, introduce a nested table.
Table tbl = new Table();
tbl.BackgroundColour = tbd.BackgroundColour;
tbd.ChildElement = tbl;
// Add children to this nested table in NW, NE, SW, SE order.
TableRow tbr = null;
for (int i = 0; i < 4; ++i) {
if (i % 2 == 0) {
tbr = new TableRow();
tbl.Rows.Add(tbr);
}
TableData tbdd = new TableData();
tbr.Cells.Add(tbdd);
recursivelyGenerateTable(current.ChildNodes[i], tbdd);
}
}
else {
// If a leaf, simply set the colour on the current element.
tbd.BackgroundColour = current.Colour;
tbd.Height = current.Height;
tbd.Width = current.Width;
tbd.ColumnSpan = 1;
}
}
public void generateTable(Image img, Table tbl)
{
// Downsample image.
int newHeight = (img.Size.Height / this.mSize) + 1;
int newWidth = (img.Size.Width / this.mSize) + 1;
Bitmap newImg = new Bitmap(newWidth, newHeight);
using (Graphics g = Graphics.FromImage (newImg))
{
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.DrawImage(img, new Rectangle(0, 0, newWidth, newHeight));
}
// Now iterate over down-sampled image to generate mosaic.
for (int y = 0; y < newHeight; ++y) {
TableRow tbr = new TableRow();
tbl.Rows.Add (tbr);
for(int x = 0; x < newWidth; ++x) {
TableData tbd = new TableData();
tbd.BackgroundColour = newImg.GetPixel (x, y);
tbd.Height = this.Size;
tbd.Width = this.Size;
tbd.ChildElement = null;
tbr.Cells.Add(tbd);
}
}
}