public static void Main(string[] args)
{
// call the snippets
Snippets snip = new Snippets();
foreach (string snippet in Snippets.snippets)
{
string filename = "./" + snippet + ".svg";
Surface surface = new SvgSurface(filename, IMAGE_WIDTH, IMAGE_WIDTH);
Context cr = new Context(surface);
cr.Save();
Snippets.InvokeSnippet(snip, snippet, cr, IMAGE_WIDTH, IMAGE_HEIGHT);
cr.ShowPage();
cr.Restore();
surface.Finish ();
}
}
public void Export(string filename, ExportFormat format)
{
this.UnselectAll();
double leftMost = double.MaxValue,
rightMost = 0,
topMost = double.MaxValue,
bottomMost = 0;
Shape leftLayer = new Shape(),
rightLayer = new Shape(),
topLayer = new Shape(),
bottomLayer = new Shape();
foreach(Shape l in this)
{
if(l.Position.X + l.Boundaries.Width / 2 > rightMost)
{
rightMost = l.Position.X + l.Boundaries.Width / 2;
rightLayer = l;
}
if(l.Position.X - l.Boundaries.Width / 2 < leftMost)
{
leftMost = l.Position.X - l.Boundaries.Width / 2;
leftLayer = l;
}
if((l.Position.Y - l.Boundaries.Height / 2) < topMost)
{
topMost = l.Position.Y - l.Boundaries.Height / 2;
topLayer = l;
}
if(l.Position.Y + l.Boundaries.Height > bottomMost)
{
bottomMost = l.Position.Y + l.Boundaries.Height;
bottomLayer = l;
}
}
Size size;
//TODO: to keep or not to keep the 1px border, that is the question.
size.Width = (rightLayer.Position.X + rightLayer.Boundaries.Width / 2) -
(leftLayer.Position.X - leftLayer.Boundaries.Width / 2) + 1;
size.Height = (bottomLayer.Position.Y + bottomLayer.Boundaries.Height / 2) -
(topLayer.Position.Y - topLayer.Boundaries.Height / 2) + 1;
Surface surface;
//TODO: each surface is handling the size differently... BUT WHY?
switch(format)
{
case ExportFormat.SVG:
surface = new SvgSurface(filename, size.Width, size.Height);
break;
case ExportFormat.PDF:
surface = new PdfSurface(filename, size.Width, size.Height);
break;
case ExportFormat.PNG:
surface = new ImageSurface(Format.ARGB32,
(int)size.Width,
(int)size.Height);
break;
default:
surface = new SvgSurface(filename, size.Width, size.Height);
break;
}
Cairo.Context c = new Context(surface);
c.Translate(-leftLayer.Position.X + leftLayer.Boundaries.Width / 2,
-(topLayer.Position.Y - topLayer.Boundaries.Height / 2));
this.Draw(c);
if(format == ExportFormat.PNG)
surface.WriteToPng(filename);
surface.Finish();
c.Target.Dispose();
((IDisposable) c).Dispose ();
}
/*
[XmlIgnore]
public FontFamily font;
*/
public void InternalRegenerateCloud()
{
r = new Random();
int id = 0;
double minSize = Entries.Min(e => e.SizeValue);
double maxSize = Entries.Max(e => e.SizeValue);
double range = Math.Max(0.00001, maxSize - minSize);
_source = new ImageSurface(Format.Argb32,ActualWidth,ActualHeight);
pixelss = _source.Data;
g = new Context(_source);
g.Color = new Color(1.0,1.0,1.0);
//g.Rectangle(0.0,0.0,ActualWidth,ActualHeight);
g.Paint();
g.SelectFontFace(fontname,FontSlant.Normal,FontWeight.Bold);
g.SetFontSize(100.0);
TextExtents te = g.TextExtents("x");
double areaPerLetter = te.Width;
strides = _source.Stride;
int arraySize = (int)((ActualWidth / 4) + 2) * (int)((ActualHeight / 4) + 2);
_mapping = new int[arraySize];
for (int i = 0; i < arraySize; i++) _mapping[i] = -1;
if(svgfn != null) {
svgs = new SvgSurface(svgfn,ActualWidth,ActualHeight);
svg = new Context(svgs);
svg.SelectFontFace(fontname,FontSlant.Normal,FontWeight.Bold);
}
if(pdffn != null) {
pdfs = new PdfSurface(pdffn,ActualWidth,ActualHeight);
pdf = new Context(pdfs);
pdf.SelectFontFace(fontname,FontSlant.Normal,FontWeight.Bold);
}
double fontMultiplier;
if(CoverRatio > 0.0) {
double totalsize = 0.0;
MinFontSize = 24.0; // use big fonts for testing
if(FontMaxRatio < 1.0 || FontMaxRatio > 500.0) FontMaxRatio = 6.0;
MaxFontSize = FontMaxRatio*MinFontSize;
fontMultiplier = (MaxFontSize - MinFontSize) / range;
foreach(WordCloudEntry e in Entries) {
float fontsize = (float)(((e.SizeValue - minSize) * fontMultiplier) + MinFontSize);
g.SetFontSize(fontsize);
TextExtents te1 = g.TextExtents(e.Word);
totalsize += te1.Width*te1.Height;
}
double actualsize = ActualHeight*ActualWidth;
double ratio1 = totalsize / actualsize; //this should be == CoverRatio
//we assume that totalsize ~ MinFontSize^2 in this case
MinFontSize = MinFontSize*Math.Sqrt(CoverRatio / ratio1);
MaxFontSize = FontMaxRatio*MinFontSize;
fontMultiplier = (MaxFontSize - MinFontSize) / range;
LargestSizeWidthProportion = 0.9;
}
double targetWidth = Math.Max(ActualWidth, ActualHeight) * LargestSizeWidthProportion;
WordCloudEntry od = Entries.OrderByDescending(e => (e.SizeValue - minSize) * e.Word.Length).First();
double maxFontSize;
if(MaxFontSize > 0.0 && CoverRatio <= 0.0) {
maxFontSize = MaxFontSize;
if(maxFontSize < MinFontSize) maxFontSize = MinFontSize*2.7;
}
else {
g.SetFontSize(100.0);
TextExtents te2 = g.TextExtents(od.Word);
maxFontSize = 97.0*targetWidth / te2.Width;
//maxFontSize = Math.Max(MinFontSize * 2.7, 100.0 / ((od.Word.Length * areaPerLetter) / targetWidth));
if(maxFontSize > MinFontSize + 100) maxFontSize = MinFontSize + 100;
}
if(CoverRatio > 0.0) {
if(maxFontSize < MaxFontSize) MaxFontSize = maxFontSize;
fontMultiplier = (maxFontSize - MinFontSize) / range;
}
else fontMultiplier = (maxFontSize - MinFontSize) / range;
var points = new[]
{
new Point((int) (ActualWidth/2), (int) (ActualHeight/2)),
new Point((int) (ActualWidth/4), (int) (ActualHeight/4)),
new Point((int) (ActualWidth/4), (int) (3*ActualHeight/2)),
new Point((int) (3*ActualWidth/4), (int) (ActualHeight/2)),
new Point((int) (3*ActualWidth/4), (int) (3*ActualHeight/4))
};
int currentPoint = 0;
foreach (WordCloudEntry e in Entries.OrderByDescending(e => e.SizeValue))
{
again:
double position = 0.0;
Point centre = points[currentPoint];
double angle = 0.0;
if(vratio > 0.0)
{
if(r.NextDouble() < vratio) angle = 90.0;
}
float fontsize = (float)(((e.SizeValue - minSize) * fontMultiplier) + MinFontSize);
ImageSurface bm;
imgretry:
bm = CreateImage(e.Word,fontsize,e.Color,angle);
// test if it fits
if(angle == 90.0) {
if(bm.Height > ActualHeight) {
if(ActualWidth > ActualHeight) {
angle = 0.0;
bm.Destroy();
bm = null;
goto imgretry;
}
// crop the end
ImageSurface bm2 = new ImageSurface(Format.Argb32,bm.Width,(int)(ActualHeight*0.95));
Context g2 = new Context(bm2);
g2.SetSource(bm,0,ActualHeight-bm.Height);
g2.Paint();
((IDisposable)g2).Dispose();
bm.Destroy();
bm = bm2;
}
}
else {
if(bm.Width > ActualWidth) {
if(ActualHeight > ActualWidth) {
angle = 90.0;
bm.Destroy();
bm = null;
goto imgretry;
}
// crop the end
ImageSurface bm2 = new ImageSurface(Format.Argb32,(int)(ActualWidth*0.95),bm.Height);
Context g2 = new Context(bm2);
g2.SetSource(bm,0,0);
g2.Paint();
((IDisposable)g2).Dispose();
bm.Destroy();
bm = bm2;
}
}
//WordBitmap bm2 = new WordBitmap(bm);
Dictionary<Point, List<Point>> lst = CreateCollisionList(bm);
bool collided = true;
do
{
Point spiralPoint = GetSpiralPoint(position);
int offsetX = (bm.Width / 2);
int offsetY = (bm.Height / 2);
var testPoint = new Point((int)(spiralPoint.X + centre.X - offsetX), (int)(spiralPoint.Y + centre.Y - offsetY));
if (position > (2 * Math.PI) * 580)
{
//bm2.Dispose();
if (++currentPoint >= points.Length)
goto done;
goto again;
}
int cols = CountCollisions(testPoint, lst);
if (cols == 0)
{
tryagain:
double oldY = testPoint.Y;
if (Math.Abs(testPoint.X + offsetX - centre.X) > 10)
{
if (testPoint.X + offsetX < centre.X)
{
do
{
testPoint.X += 2;
} while (testPoint.X + offsetX < centre.X && CountCollisions(testPoint, lst) == 0);
testPoint.X -= 2;
}
else
{
do
{
testPoint.X -= 2;
} while (testPoint.X + offsetX > centre.X && CountCollisions(testPoint, lst) == 0);
testPoint.X += 2;
}
}
if (Math.Abs(testPoint.Y + offsetY - centre.Y) > 10)
{
if (testPoint.Y + offsetY < centre.Y)
{
do
{
testPoint.Y += 2;
} while (testPoint.Y + offsetY < centre.Y && CountCollisions(testPoint, lst) == 0);
testPoint.Y -= 2;
}
else
{
do
{
testPoint.Y -= 2;
} while (testPoint.Y + offsetY > centre.Y && CountCollisions(testPoint, lst) == 0);
testPoint.Y += 2;
}
if (testPoint.Y != oldY)
goto tryagain;
}
collided = false;
CopyBits(testPoint, bm, lst, Entries.IndexOf(e));
Console.Error.WriteLine("id: {0}, word: {1}, score: {7}, fontsize: {8}," +
"x: {2}, y: {3}, w: {4}, h: {5}, angle: {6}",id,e.Word,testPoint.X,testPoint.Y,
bm.Width,bm.Height,angle,e.SizeValue,fontsize);
id++;
bm.Destroy();
if(svg != null) {
svg.SetFontSize(fontsize);
TextExtents te2 = svg.TextExtents(e.Word);
svg.Save();
if(angle == 90.0) {
svg.MoveTo(testPoint.X-te2.YBearing,testPoint.Y+te2.Width+te2.XBearing);
svg.Rotate(-0.5*Math.PI);
}
else {
svg.MoveTo(testPoint.X-te2.XBearing,testPoint.Y-te2.YBearing);
}
svg.Color = e.Color;
svg.ShowText(e.Word);
svg.Restore();
}
if(pdf != null) {
pdf.SetFontSize(fontsize);
TextExtents te2 = pdf.TextExtents(e.Word);
pdf.Save();
if(angle == 90.0) {
pdf.MoveTo(testPoint.X-te2.YBearing,testPoint.Y+te2.Width+te2.XBearing);
pdf.Rotate(-0.5*Math.PI);
}
else {
pdf.MoveTo(testPoint.X-te2.XBearing,testPoint.Y-te2.YBearing);
}
pdf.Color = e.Color;
pdf.ShowText(e.Word);
pdf.Restore();
}
}
else
{
if (cols <= 2)
{
position += (2 * Math.PI) / 100;
}
else
position += (2 * Math.PI) / 40;
}
} while (collided);
}
done:
((IDisposable)g).Dispose();
if(svgfn != null) ((IDisposable)svg).Dispose();
if(pdffn != null) ((IDisposable)pdf).Dispose();
Console.Error.WriteLine("# {0} words placed",id);
}