protected override void OnPaint(PaintEventArgs pe)
{
if (hues != null)
{
if (bitmapCache[brightness] == null)
{
bitmapCache[brightness] = new Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format16bppArgb1555);
int min = showAllColors ? 0 : 1;
int max = showAllColors ? 0 : 0x3e9;
HuesRenderer.DrawField(bitmapCache[brightness], hues, min, max, hueSize, brightness);
}
pe.Graphics.DrawImageUnscaled(bitmapCache[brightness], 0, 0);
PaintFocusRectangle(pe.Graphics);
}
else
{
pe.Graphics.DrawRectangle(SystemPens.WindowText, 0, 0, Width - 1, Height - 1);
SizeF fontSize = pe.Graphics.MeasureString(Name, SystemFonts.DialogFont);
pe.Graphics.DrawString(Name, SystemFonts.DialogFont, SystemBrushes.WindowText, (Width - fontSize.Width) / 2, (Height - fontSize.Height) / 2);
}
base.OnPaint(pe);
}
protected override void OnPaint(PaintEventArgs pe)
{
if (hues != null)
{
if (cache == null)
{
cache = new Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format16bppArgb1555);
HuesRenderer.DrawSpectrum(cache, hues, hueIndex);
}
pe.Graphics.DrawImageUnscaled(cache, 0, 0);
}
else
{
pe.Graphics.DrawRectangle(SystemPens.WindowText, 0, 0, Width - 1, Height - 1);
SizeF fontSize = pe.Graphics.MeasureString(Name, SystemFonts.DialogFont);
pe.Graphics.DrawString(Name, SystemFonts.DialogFont, SystemBrushes.WindowText, (Width - fontSize.Width) / 2, (Height - fontSize.Height) / 2);
}
base.OnPaint(pe);
}
public static void DrawField(Bitmap bitmap, Hues hues, int startHueIndex, int endHueIndex, Size hueSize, int brightness)
{
// Check arguments
if (bitmap == null)
{
throw new ArgumentNullException("bitmap");
}
if (hues == null)
{
throw new ArgumentNullException("hues");
}
if (bitmap.PixelFormat != PixelFormat.Format16bppArgb1555)
{
throw new ArgumentException("Invalid bitmap pixel format.", "bitmap");
}
if (startHueIndex != 0)
{
startHueIndex = HuesRenderer.Range(startHueIndex, hues.MinIndex, hues.MaxIndex);
}
if (endHueIndex != 0)
{
endHueIndex = HuesRenderer.Range(endHueIndex, hues.MinIndex, hues.MaxIndex);
}
hueSize.Width = HuesRenderer.Range(hueSize.Width, 1, 64);
hueSize.Height = HuesRenderer.Range(hueSize.Height, 1, 64);
brightness = HuesRenderer.Range(brightness, 0, 31);
int columns = bitmap.Size.Width / hueSize.Width;
int rows = bitmap.Size.Height / hueSize.Height;
BitmapData data = bitmap.LockBits(new Rectangle(new Point(), bitmap.Size), ImageLockMode.WriteOnly, PixelFormat.Format16bppArgb1555);
for (int y = 0; y < rows; y++)
{
short[] line = new short[bitmap.Size.Width];
for (int x = 0; x < columns; x++)
{
int id = startHueIndex + x * rows + y + 1;
if (id <= hues.MaxIndex && (endHueIndex == 0 || id <= endHueIndex))
{
ushort color = hues.Get(id).Colors[brightness];
for (int i = 0; i < hueSize.Width; i++)
{
line[x * hueSize.Width + i] = (short)(color | 0x8000);
}
}
}
for (int i = 0; i < hueSize.Height; i++)
{
int offset = (int)data.Scan0 + (y * hueSize.Height + i) * data.Stride;
Marshal.Copy(line, 0, (IntPtr)offset, line.Length);
}
}
bitmap.UnlockBits(data);
}
