private void URemove(string path)
{
CacheEntry entry = (CacheEntry)items [path];
if (entry != null)
{
items.Remove(path);
items_mru.Remove(entry);
entry.Dispose();
}
}
private void URemove(SafeUri uri)
{
CacheEntry entry = null;
if (items.ContainsKey(uri))
{
entry = items[uri];
items.Remove(uri);
items_mru.Remove(entry);
entry.Dispose();
}
}
bool ShrinkIfNeeded()
{
int num = 0;
while ((items_mru.Count - num) > 10 && total_size > max_size)
{
CacheEntry entry = items_mru [num++];
items.Remove(entry.Uri);
entry.Dispose();
}
if (num > 0)
{
//System.Console.WriteLine ("removing {0} out of {3} ({1} > {2})",
// num, total_size, max_size, items_mru.Count);
items_mru.RemoveRange(0, num);
return(true);
}
return(false);
}
public Bitmap Get(
Graphics graphics, string text,
Font font, RotateFlipType rotation,
Color textColor, Color outlineColor,
StringFormat stringFormat, SizeF size
)
{
CacheEntry ce = null;
if (size.Width < 1)
{
size.Width = 1;
}
if (size.Height < 1)
{
size.Height = 1;
}
bool needNewBitmap = true;
if (TryGetValue(text, out ce))
{
if ((ce.Font == font) && (ce.TextColor == textColor) &&
(ce.OutlineColor == outlineColor) && (ce.Size == size))
{
needNewBitmap = false;
}
}
if (needNewBitmap)
{
var fullSize = graphics.MeasureString(text, font, new PointF(0, 0), stringFormat);
var bitmap = new Bitmap(
(int)Math.Ceiling(Math.Min(size.Width, fullSize.Width)),
(int)Math.Ceiling(Math.Min(size.Height, fullSize.Height)),
System.Drawing.Imaging.PixelFormat.Format32bppPArgb
);
using (var g = Graphics.FromImage(bitmap)) {
g.Clear(Color.FromArgb(0, outlineColor));
g.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceOver;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.GammaCorrected;
using (var brush = new SolidBrush(textColor))
using (var innerPen = new Pen(Color.FromArgb(160, textColor), 0.5f))
using (var pen = new Pen(outlineColor, 3f))
using (var path = new GraphicsPath()) {
float emSize = g.DpiY * font.Size / 72f;
path.AddString(
text, font.FontFamily,
(int)font.Style, emSize,
new RectangleF(0f, 0f, size.Width, size.Height), stringFormat
);
innerPen.LineJoin = pen.LineJoin = LineJoin.Round;
g.DrawPath(pen, path);
// Compensate for inadequate gamma correction in GDI+
if (textColor.GetBrightness() < outlineColor.GetBrightness())
{
g.DrawPath(innerPen, path);
}
g.FillPath(brush, path);
}
}
if (ce != null)
{
Remove(ce.Text);
ce.Dispose();
}
bitmap.RotateFlip(rotation);
ce = new CacheEntry {
Bitmap = bitmap,
Font = font,
OutlineColor = outlineColor,
TextColor = textColor,
Text = text,
Size = size
};
Add(ce);
}
var result = ce.Bitmap;
return(result);
}
